岡山大学環境理工学部Acta Medica Okayama134190992612021奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境理工学部 博士論文 5555ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境理工学部 研究受賞等5353ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境物質工学科 学術論文等4551ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境管理工学科 学術論文等2943ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境デザイン工学科 学術論文等 1727ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909926120212020年 環境数理学科 学術論文等1116ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992612021散水によるアスファルト上の暑熱環境緩和効果710ENToshitsuguMOROIZUMINaoyaITOTakeshiMIURAIn this study, water was sprinkled on the asphalt surface during the hottest hours of the day using a sprinkler, and the effect was experimentally verified. An air temperature, a humidity, a ground surface temperature, and a globe temperature which is radiant heat from the ground were measured, and using these measurements, WBGT (Wet-Bulb Globe Temperature), which is an index of thermal stress on the human body, was calculated. In this way, we investigated not only the climate mitigation effect but also the mitigation effect of the thermal environment felt by the human body.</br>
As a result, the following points were clarified in this study: 1) During sprinkling, the air temperature, the black globe temperature, and the WBGT were lower in the sprinkled area than in the controlled area, and the wet-bulb temperature hardly changed. 2) Focusing on the amount of change after watering compared to before watering, the air temperature, the globe temperature, and the WBGT decreased, and the wet-bulb temperature hardly changed. 3) In the sprinkled area, when the WBGT value just before watering is higher than that of the strict caution (WBGT is 28°C or higher), it drops to a level one rank lower, and when the WBGT value just before watering is warning (WBGT value is 25°C or higher), it was almost no change. No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992612021岡山県3河川流域における実蒸発散量の推定 : Morton 法と修正 Brutsaert and Stricker 法の比較15ENToshitsuguMOROIZUMITakeshiMIURA In the study, the actual evaporation was estimated in the Asahi River, the Takahashi River, and the Yoshii River basins in Okayama prefecture for four years from January 1999 to December 2002. The Morton method and the modified Brutsaert and Stricker (B & S) method were applied to the three river basins to estimate the actual evapotranspiration and compare the two methods.</br>
As a result, the actual evapotranspiration by the Morton method was all almost equal to that by the Penman’s potential evapotranspiration, and the evapotranspiration was overestimated rather than the actual evapotranspiration. The actual evapotranspiration by the modified B & S method was below the Penman’s potential evapotranspiration throughout the year, and the total annual amount was about 80% of the potential evapotranspiration. In addition, the modified B & S method showed the general tendency that the actual evapotranspiration was lower in urban area than in the hilly and mountainous areas. No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992612021目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992612021表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992512020奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境理工学部 博士論文 5152ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境理工学部 研究受賞等 4949ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境物質工学科 学術論文等 3948ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境管理工学科 学術論文等 2737ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境デザイン工学科 学術論文等 1326ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120202019年 環境数理学科 学術論文等 511ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909925120203次元計測を利用した効率的な3次元有限要素モデル化法の提案14ENMinoruKANESHIGEShin-ichiNISHIMURAToshifumiSHIBATATakayukiSHUKU10.18926/fest/58060 In this decade, 3-dimensional topographic survey has been developed by using the UAV as like drones. With the technique, the complete topographies of the geo-structures can be measured. Although the accurate shapes of the geo-structures can be obtained, the numerical methods as like the finite element method is are not related to the 3-dimensional survey directly. In this research, the finite mesh modelling technique with use of the 3-D topographic survey is developed. The models of the earth-fill embankments formed from measured 3-D data are introduced as the examples.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992512020目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992512020表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992412019奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境理工学部 博士論文 5556ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境理工学部 研究受賞等 5354ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境物質工学科 学術論文等 3952ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境管理工学科 学術論文等 2137ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境デザイン工学科 学術論文等 920ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341909924120192018年 環境数理学科 学術論文等 18ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992412019目次 ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992412019表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402312018奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境理工学部 博士論文135136ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境理工学部 研究受賞等 133133ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境物質工学科 学術論文等117131ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境管理工学科 学術論文等103115ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境デザイン工学科 学術論文等 89102ENあればNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694023120182017年 環境数理学科 学術論文等 8187ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992312018An Analysis of Land-Use in Okayama Prefecture in terms of Industrial Crops4979ENIchiminamiFumikazuFaculty of Environmental Science and Technology, Okayama UniversityMeltem Okur DinçsoyFaculty of Economics and Administrative Sciences, Trakya UniversityEnver Erdin DinçsoySchool of Applied Sciences, Trakya University10.18926/fest/55732 There are many limitations and difficulties in terms of expanding agricultural lands. Also, some other factors affect the agricultural lands that result in decreases such as climate change, erosion and misuse of the lands. It is clear that these developments in agricultural land use threaten the future of human welfare, social conditions, economic growth and food supply. In this study, we examined the land use and its significance that represent past agriculture and regional characteristics in the Chugoku region including Okayama prefecture and the Seto Inland Sea. Specifically, among the products called as industrial crops, such as cotton, pyrethrum, rush, tobacco, rapeseed, mulberry and tea, were adopted as the indicators. Currently, these landscapes can hardly be seen, only leaves of tobacco and tea can still be seen in mountainous areas. Even in agricultural land usewhich has almost disappeared now, it may have indirect influence as in the case of reclaimed land and rush products. Therefore, we reaffirmed in this study the reasons for their existence and their significance.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992312018A Transitional Analysis on the Production of Cereals, Beans and Potatoes in Okayama Prefecture2348ENSchool of Applied Sciences, Trakya UniversityIchiminamiFumikazuFaculty of Environmental Science and Technology, Okayama UniversityMeltem Okur DinçsoyFaculty of Economics and Administrative Sciences, Trakya University10.18926/fest/55731 The contribution of cereals to economies is undoubtedly very important and has many dimensions in terms of use of cultivated areas, agricultural production, nutrition, domestic and foreign trade and national income. In this study, we examined the characteristics of agricultural production in Okayama prefecture from the viewpoint of grain, beans and potatoes excluding rice, wheat and barley in the long term. These are undoubtedly supposed to have a certain role in complementing the function as the staple food of rice and wheat, etc.Also, according to our literature investigations, researchers have not focused on this context for Okayama Prefecture by not spending enough attention in the past. Therefore, we focus on these subjects in this paper by examining a historical significance. It is observed that some planting area and yield of crops have drastically reduced in Okayama prefecture.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama134190992312018The Long Term Change of Agricultural Production in Okayama Prefecture in terms of Rice, Wheat and Barley121ENMeltem Okur DinçsoyFaculty of Economics and Administrative Sciences, Trakya UniversityEnver Erdinç DinçsoySchool of Applied Sciences, Trakya UniversityIchiminamiFumikazuFaculty of Environmental Science and Technology, Okayama University10.18926/fest/55730 The current ratio of dependence on food in Japan has remarkably grown and the significance of food self-sufficiency by concurrent agriculture may decline, while importantly conserving the natural environment, appropriate management of farmland. Okayama prefecture has an agricultural trend over more than 100 years of rice, barley and wheat cropping area with the rise and fall of its agricultural land use from the prior to the Industrial Revolution in Japan. Although rice reduction policy in Japan is scheduled to end in 2017, Japan is strongly subject to rice compared to other grains. In order to understand the role and scope of the agricultural sector in Okayama pref., it is necessary to review the changes in the related agricultural products for the long term. In Okayama pref., the cultivation and processing of some industrial crops including sericulture sector were thriving in the past, but, commercial agriculture was not well developed and the meaning of the production of cereals was greater than current production. Considering the part of agricultural characteristics by examining the cultivation of crops over the long term, planting area survey by variety confirmed that the greatest feature of rice cultivation in Okayama pref. is the diversity of varieties. In addition to various rice varieties, agriculture in Okayama pref. has a high sustainability, resistance and flexibility against changes on climate, policies and land use.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402312018目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402312018表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境理工学部 博士論文125126ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境理工学部 研究受賞等123124ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境物質工学科 学術論文等107122ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境管理工学科 学術論文等95106ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境デザイン工学科 学術論文等8194ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694022120172016年 環境数理学科 学術論文等7379ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017タイのアスパラガス産地における圃場の選好条件6571ENHidenoriMoritaGraduate School of Environmental and life Science, Okayama UniversityShoyaHironakaYukiMatsumoto10.18926/fest/54864A questionnaire survey by interview to the farmhouse in Nakhon Pathom Province in Thailand had been carried out, where the asparagus farming as the cash crop have spread rapidly. Valid response from 24 farmers were obtained and Asparagus had been planted in 30 plots within 74 plots (40.5%). As the result of statistical analysis on the geospatial preference for asparagus fields by logit model in which the geospatial characteristics of plots such as elevation, slope, curvature, acreage and distance from farmhouse were adapted as the explanatory variables while the category of the cultivated crops in there was adapted as the independent variable, it became clear that as for the asparagus plots, small lots were more preferred. On the other hand, the geospatial preference for asparagus plots such as elevation, slope, curvature and distance from farmhouse did not became clear.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017岡山地方気象台観測露場移転による気温低下量の推定6164ENTakeshiMiuraGraduate School of Environmental and life Science, Okayama UniversityYuUedaGraduate School of Environmental and life Science, Okayama UniversityHidenoriMoritaGraduate School of Environmental and life Science, Okayama UniversityHidetakaChikamoriGraduate School of Environmental and life Science, Okayama UniversityMasahiroKurokawaYoshitakaNakashimaGraduate School of Environmental and life Science, Okayama UniversityYokoOkiGraduate School of Environmental and life Science, Okayama University10.18926/fest/54863Statistical change in official temperature records at Okayama City caused by relocation of meteorological observation field of Meteorological Agency was evaluated. The observation field of Okayama local meteorological observatory was moved to the Tsushima Campus of Okayama University from the downtown area of Okayama City in March, 2015. Comparison between the air temperature records measured at meteorological agency station and the records at Tanjo Pond in Tsushima Campus, showed 0.56 ℃ drop in annual average before and after relocation. Moreover, comparison between the records of Okayama local meteorological observatory and that at the surrounding meteorological observing 9 stations showed 0.55 ℃ drop in annual average. Those results suggest that the relocation dropped annual average of air temperature by about 0.6 ℃.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017現地気象観測データを用いた最低気温予測方法とその精度―インターネットを利用した最低気温予報システムの改良―5559ENYuUedaGraduate School of Environmental and life Science, Okayama UniversityTakuyaMishimaTakeshiMiuraGraduate School of Environmental and life Science, Okayama UniversityToshitsuguMoroizumiGraduate School of Environmental and life Science, Okayama University10.18926/fest/54862We have developed a minimum air temperature forecasting system using local meteorological
observation data in order to prevent or mitigate the frost damage. In this paper, the correlation between the meteorological factors and the decrease in air temperature during the night was shown. Then minimum air temperature was predicted by the multiple regression equation that uses air temperature and humidity at 18:00 as explanatory variables. As the result, the root mean square error (RMSE) was 2.8°C. When the difference of air temperature between 17:00 and 18:00 was used for the prediction instead of humidity, the RMSE was 3.5°C. Next, the prediction was carried out only in clear nights, then the equation that use air temperature and humidity at 18:00 showed that the RMSE was 1.3°C. Although the predictive accuracy of the equations for clear nights is low on cloudy or rainy nights, we can forecast safely on frosty nights by using those equations in combination with the equations for all nights.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017経営部門からみた鳥取県の食料生産の変貌2954ENFumikazuIchiminamiGraduate School of Environmental and life Science, Okayama University10.18926/fest/54861The study aims to explain the main features of food production in Tottori prefecture focusing on agricultural enterprises. First, the number of farmers and farm households, the area of cultivated land, and their spatial distribution were analyzed. Then, the production trend on rice, livestock, vegetables such as watermelon and leek, and pears was surveyed. Furthermore, by overlooking the features of each enterprise, food production as a regional agriculture was briefly examined. Farm management in Tottori pref. has long been a small scale selfsufficiency property, but has gradually decayed or specialized. Because agricultural workers are continuously decreasing and aging, farming in Tottori pref. should pay attention to the demand of world food while publicizing a process on food production and farmmanagement carefully.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017Tourism Inventory of Okayama Prefecture: An Analysis on Main Sightseeing Spots in terms of the Number of Tourists128ENFumikazuIchiminamiFaculty of Environmental Science and Technology, Okayama UniversityMeltem Okur DİNCSOYFaculty of Economics and Administrative Sciences, Trakya UniversitEnver Erdinc DİNCSOYDepartment of Banking, School of Applied Sciences, Trakya University10.18926/fest/54860 At the early stage of this paper, Okayama prefecture was analyzed by the author focusing on the tendency of main sightseeing-areas based on the number of tourists for three decades (Ichiminami, 2002). In this study, the main sightseeing spots in Okayama pref. are also examined and the developments are explained in a more detailed and updated perspective by extending over current features and the number of tourists. One of the important reasons in a significant increase in tourists in Okayama is the opening of the highways, the bullet train and cross-linking of the Seto Ohashi Bridge. At the same time, there are some waves in the increase or decrease of the tourist trends appearing from several vital developments such as environmental, climatic, social, economic and spatial. In this regard, research objectives of the study are mainly based on investigating and making a comprehensive study on main sightseeing spots in Okayama pref. to find new tourism values and to provide a tourism inventory of Okayama pref. by means of information, data and clues from the field in/between the tourist destinations such as hotel guests, gardens and castles. Therefore, Okayama pref. has a rich potential of historical and cultural heritage in terms of spatial planning and growth. The important point is that the structural adaptation between historical and cultural assets and the city life should be provided and protected for domestic and foreign tourism as much as creating better futures in health tourism, gastronomy tourism, cultural tourism, belief tourism, congress tourism, thematic tourism and local tourism.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402212017表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402112016奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境理工学部博士論文8990ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境理工学部研究受賞等8787ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境物質工学科7185ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境管理工学科5570ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境デザイン工学科3954ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694021120162015年度環境数理学科3338ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402112016Spatial Dimension of Change in Agricultural Land Use and Impact on Crop Production in Turkey132ENFumikazuIchiminamiFaculty of Environmental Science and Technology, Okayama UniversityEnver ErdinçDİNÇSOYDepartment of Banking, School of Applied Sciences, Trakya UniversityMeltem OkurDİNÇSOYFaculty of Economics and Administrative Sciences, Trakya University10.18926/fest/54426Turkey has been undergoing very important economic and social changes since several decades such as economic growth, privatization of state enterprises, liberalization, and integration with the EU, and legislative reforms. All sectors in Turkey and production levels are affected by these changes during the years. Crop production in agriculture is one of the most affected sectors. Many policies by governmental/nongovernmental organizations have been applied and supported for the development of the sector such as modernization, mechanization, irrigation, road constructions, potable water, financial supports, agricultural insurance, and technical supports. Therefore, the main purpose of this paper is to look back and analyze the trend of agricultural changes, land use and related production levels in Turkey.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402112016目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402112016表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境理工学部博士論文103104ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境理工学部研究受賞等101102ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境物質工学科89100ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境管理工学科7388ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境デザイン工学科5172ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694020120152014年度環境数理学科4150ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015インターネットを利用した最低気温予報システムの構築 ―予報ウェブページの設計―3540ENTakuyaMishimaTakeshiMiuraToshitsuguMoroizumi10.18926/fest/53219 The purpose of this study is to build a forecast system for predicting at minimum air
temperature in the next morning from the meteorological data, such as air temperature,
humidity, and the amount of solar radiation, in a field in the evening on the previous day. The
meteorological data are sent to a relay server, and then, transferred to a PC in our laboratory
of Okayama University by executing the computer program to import the data which are used
to calculate the predicted values of minimum air temperature. The predicted minimum air
temperatures are released for the farmers on the website in the server of Okayama University.
The website is also created by our laboratory. As a result, the predicted minimum air
temperatures agreed with the measured ones.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015岡山県におけるナス生産と出荷 児島湾干拓地第七区の施設ナスを中心として1333ENYuichiroFurutaFumikazuIchiminami10.18926/fest/53218 The main purpose of this study is to explain the production and shipment of eggplant and the management of farm
households in the 7th division of the Kojima bay reclaimed land in Okayama prefecture. 10 pioneers began to cultivate
eggplant in a greenhouse in 1969 and the number of farm households, acreage and shipment increased dramatically until
the early 1980s. However, decline or stagnation trend has continued thereafter. Farm workers are often 50 years old or
more, each farmer has cultivated eggplant, rice, two-rowed malting barley in family management by 2 or 3 persons.
Work begins in July. Eggplant seedlings are planted in August, harvest begins in October and heating in November. Pest
control is necessary throughout the year, but pesticide use has decreased in recent years. In order to suppress the occur
-rence of the pests, workers use both the bunker crops like sesame and natural enemies like Amblyseius swirskii . However,
because the prices of agricultural materials and fuel are recently soaring, the farm management of eggplant has become
increasingly severe. We propose to expand the sales network by advertising and a more aggressive acceptance of new
farmers.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015Preliminary study on the preserved trees in the central part of Himeji city and Syosya-zan Engyo-ji in terms of civil consciousness111ENFumikazuIchiminamiYukikoNoguchiMeltem OkurDinçsoyEnver ErdinçDinçsoy10.18926/fest/53217 This study investigated the civil consciousness on the preserved trees in Himeji city, Hyogo prefecture.
We conducted data collection in the city hall,,observed preserved trees, and examined the awareness of
citizens against the preserved trees in the central area and Syosya-zan Engyo-ji. As a result, it was revealed
that the citizens are not indifferent to the natural environment of trees, etc., they also do not have a strong
interest in it in particular. As for preserved tree system, there were some slight differences in the recog
-nition between the people who actually take care of trees and administration. People are in favor of the need
for the current system of preserved trees. However, in Japan, which is blessed with many things, people do
not recognize strongly appreciating the natural environment.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69402012015表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境理工学部博士論文9292ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境理工学部研究受賞等9191ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境物質工学科7490ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境管理工学科5173ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境デザイン工学科3750ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694019120142013年度環境数理学科2636ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014分子軌道計算による高い離型性を有するセラミックスコーティングの材料設計2225ENTokuroNanbaJiroFujiharaShinichiSakidaYasuhikoBenino10.18926/fest/52229 To explore the ceramic materials appropriate for the coatings with high mold releasability, molecular orbital (MO) calculations have been applied to the ceramics with NaCl structure, such as TiN, TiC, CrN, etc. Chemical bonding characters were evaluated based on the MO calculations, which were correlated to the experimental surface free energy. The dispersion and polar components of surface free energy indicated high correlation with the bond overlap population of the surface bonds and the net charge of inside atoms of the cluster models, respectively. Among the ceramic materials investigated, MoN had the lowest surface free energy, being expected to be most suitable as the ceramic coating material with high releasabilityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014Global Warming and Changing Rice Cultivation in Japan – An Analysis on the Acreage or Yield of Main Varieties of Rice –821ENFumikazuIchiminamiMeltem OkurDinçsoyEnver ErdinçDinçsoy10.18926/fest/52228 In this study, we examined the change of rice cultivation in consideration of the global warming. In Japan, rice which is suitable for subtropical zone is grown even in an environment of cool-temperate climate. Since the rice varieties that resist of cold weather have been developed, rice cultivation spread to north parts of the country gradually. Land productivity of rice has also improved markedly. As a result, northern Japan became the main producer of rice. Now, taking not only crop production but also the landscape formation and preservation of the natural environment into account, we should think about the rural society from different aspects.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014影響関数による近似の数値評価17ENHong MeiBaoKaoruFueda10.18926/fest/52227For evaluating statistical models one of the most effective criteria is cross-validation. But it
requires a large amount of computation. Various alternative schemes are considered to reduce
its computation. Modified generalized information criterion is one of those alternative schemes.
In this criterion an influence function is used to estimate the parameters of the models. By the
numerical simulation we studied the effect of an influence function.
Surveying data of the lake depth are used as the sample data. We estimate the shape of
lake bottom as spline surface. The estimated parameters and the estimated depths obtained
by two criteria are compared and the effect of an information function is analysed.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401912014表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401812013奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境理工学部博士論文120120ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境理工学部研究受賞等119119ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境物質工学科81118ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境管理工学科4580ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境デザイン工学科3344ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-694018120132012年度環境数理学科1832ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401812013The Management of Arable Land in Japan - An Analysis on Transition of Non-cultivated Arable Land -117ENFumikazuIchiminamiEnver ErdincDincsoy10.18926/fest/49347In Japan, the number of full-time farm households had continued to decrease since the latter
half of 20th century. The number of part-time households has been also decreasing remarkably
in the last twenty years. Cultivated acreage also aligned with these tendencies and it has decreased.
As a result, the farmland which is not cultivated increased and it may also grow into a
social problem. Therefore, the present condition and future view of Japanese agriculture was
elaborately examined in the study by analyzing the transition of non-cultivated arable lands from
a historical perspective.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401812013目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2187-69401812013表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334717120122011年度環境物質工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334717120122011年度環境管理工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334717120122011年度環境デザイン工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334717120122011年度環境数理学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012観光客と地域住民からみた岡山県総社市 備中国分寺の景観と観光2343ENTomoyaMizutaFumikazuIchiminami10.18926/fest/48239In this paper, we examined the landscape and sightseeing at Bittchu-Kokubunji in Okayama
prefecture carrying out the questionnaire survey to tourists and local residents. Both tourists
and local residents estimate that the landscape ofBittchu-Kokubunji is wonderful, and it has several
images such as historical, quiet, and old-fashioned, etc. AlthoughBittchu-Kokubunji is one of the
famous tourist resorts in Okayama prefecture, there are quite few tourists compared with the degree
of notability. Almost all tourists' age was 50 or more.
As more active sightseeing activities, the number of times of holding events, such as an
announcement of traditional performing arts, lighting of a five-storied pagoda, photograph or a
sketching convention, needs to be increased. An attractive tourist resort should be created by the
cooperation of local residents and administration.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012大学生の社会貢献・地域連携に対する意識721ENMyungjinNaMasaruArakiKojiKurihara10.18926/fest/48238Recently, competition among universities has a whole new face, and emphasis is given toward interdependence and
interactive evolution between universities and regions. From this social perspective, universities should contribute to
regional development by serving the regional society using results of intellectual work, and it is necessary for
universities to accomplish social contribution and regional cooperation strategically. One of the most important parts in
strategic planning is that students participate in activities for social contribution and regional cooperation. This paper
presents a survey of the university students’ awareness on social contribution and regional cooperation using several
statistical methods and attempts to find factors which affect activities for social contribution and regional cooperation
using logistic regression analysis.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012感染症数理モデルの再生産数(レビュー)16ENMasanoriSumitaTsuyoshiKajiwara10.18926/fest/48237We review some fundamental results on the basic reproductive ratio of models in epidemiology following several documents. We present the general denition of the basic reproductive ratio and the threshold theorem of for the stability of the disease free equilibrium. All results for non-negative matrices and non singular M-matrices which we need in the denition of the basic reproductive ratio and the proof of the threshold theorem are also presented. All parts of the review are self-contained, and all parts of the proof are given explicitly.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471712012表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334716120112010年度環境物質工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334716120112010年度環境管理工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334716120112010年度環境デザイン工学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-334716120112010年度環境数理学科研究報告ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011補完関係式を用いた実蒸発散量推定式の改良3539ENTakeshiNakamichiToshitsuguMoroizumiTakeshiMiura10.18926/fest/44792Advection-Aridity(AA) model can calculate actual evapotranspiration by using only meteorological data. However, comparing the model with Penman equation showed that AA model doesn’t properly evaluate evapotranspiration from urban moisture area. In urban area, Actual evaporation from water calculated by AA model(E) are much less than that by Penman equation(Epo). Multiple regression analysis using estimation results indicates that the difference between the models is due to the difference of the sensitivity to vapor pressure deficit between the models. To improve this problem, modification coefficient k, defined as k=a･albedo+b, is suggested. Regression coefficients a, b are determined as satisfying k=Epo/E for water and k=1 for urban surface. By using this coefficient k, evaporation from water is nearly equal to value estimated by Penman equation, while evaporation from urban surface is changeless.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011岡山市の商業活動の推移と課題―中心商店街、表町地区の分析を中心にして―733ENJingHanFumikazuIchiminami10.18926/fest/44791The present study mainly studied some properties of retail stores on the central shopping streets in Okayama City while looking back on the transition of the commerce. Second, we investigated the actual conditions of most retail stores in Omote-cho in terms of the questionnaire survey. Third, we considered the problems and measures on retail stores, a little. The charm of the central shopping streets has decreased
relatively in Okayama City due to the advancement of a large-scale stores and the location competition of convenience stores. The number of empty stores has increased and the amount of the pedestrian traffic, the value of sales, and the number of retail stores have shown the decreasing tendency in eight commercial blocs in Omote-cho. Therefore, the unique features in Omote-cho should be polished while esteeming the history
and the culture. The charm and/or the atmosphere of traditional commercial blocs is requested to be created while sending new informations that continue to create young person's fashion and culture.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011ドルコスト平均法を用いた投資の有効性の検証15ENMasayukiToujiKaoruFueda10.18926/fest/44790As a method of long term investment for private investor, the dollar cost averaging investment
method is well known and seems to reduce the purchase cost because we purchase risk assets with
same amount of monye every month, then we purchase many assets when the price of assets is low and few assets when the price is high. On the other hand, if the expectation of the return of the risk assets is positive, we have the maximum expectation of return when we purchase the risk assets with all of money to invest. To reduce the risk of investment, diversified investments are effective. However question whehter we use the dollar cost averaging investment method or investe money all at once to well-diversified
risk assets remains. In this study, we validate the effecte of the ddollar cost averaging investment method by Monte Carlo simulation.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama2185-33471612011表紙ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991512010奥付ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-909915120102009年度 環境物質工学科研究報告ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-909915120102009年度 環境管理工学科研究報告ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-909915120102009年度 環境デザイン工学科研究報告ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-909915120102009年度 環境数理学科研究報告ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991512010Changing Agriculture in Japan and Relevant Problems based on Long-term Transition Analysis113ENFumikazuIchiminami10.18926/fest/20353No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991512010目次ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991512010表紙ENFaculty of Environmental Science and Technology, Okayama UniversityNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Commencer...et la suite : deux obsessions majeures de l'ecriture175181EN10.18926/fest/19746What is the meanig of the first sentence, and then the meaning of the full stop? This essay tries to give an answer from a literaly, soial and metaphysical point of view.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999幕末マニュファクチャー論争の総決算159174ENNaohikoTonomura10.18926/fest/19744No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Photoconductive and Photovoltaic Properties in Cadmium Bismuth Aluminate Glasses147158ENDanpingChenTomohiroWatanabeYoshinariMiuraTokuroNanba10.18926/fest/19742Photo-induced phenomena such as photoconductive and photovoltaic effects were investigated for the glasses in CdO-Bi(2)O(3)-Al(2)O(3) system. Photoconductive effect was characterized by a slow decay of photocurrent (persitent photoconductivity). The decay rate decreased with increasing CdO content and decreasing Bi(2)O(3) content. Photovoltage was very small at room temperature but increased to an obvious value on heating. The photoconductivity and photovoltage were increased with CdO content and enhanced by heat treatment in air. The valence band spectra of X-ray photoelectron spectroscopy showed that the hybridization of Cd 4d and O 2p orbitals increases with decreasing Bi(2)O(3) content and increasing CdO content in the glasses. As the results maximum tends to flat. This type of band structure inhibits the rapid recombination of electrons and holes. The persistent photoconductivity of the glasses may be attributed to deep energy level of DX centers. Deep energy levels of the glasses are able to prevent the recombination because they have a repulsive barrier for both electron emission and capture.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Growth, Yield and Mineral Composition of Three Rice Varieties Cultivated under Salt-Affected Conditions131145ENYokoOkiTadashiAdachiHajimeNarioka10.18926/fest/19737A pot experiment was conducted to study the relative performance of IR 6,KS 282 and IR 10198-66-2 rice varieties cultivated under salt-affected conditions at EC of 6.0,9.0 12.0 dS m(-1) in a sandy clay loam soil havig ECe of 1.6 dS m(-1) treated as control. Six seedlings of 39-day old transplaned to each pot having 12 kg soil. The fertilizer as nitrophos and potassium sulphate at the rate of 57.0, 25.0 and 50.0 mg N,P and K kg(-1) soil respectively was applied at the time of transplanting while zinc sulphate at the rate of 5 mg Zn kg(-1) soil and 43.0 mg N kg(-1) of soil as additional dose were applied 19 and 30 days after transplanting respectively. Normal plant protection measures like number of tillers, panicles, paddy grains, filled and unifilled grains, yield per plant and sterility were recorded and shoot and straw samples were analysed for sodium, potassium, calcium and chloride contents. It was observed that growth and yield of all the varieties were reduced significantly with increasing soil salinity. Na/K and Na/Ca rations in shoot and straw increased significantly with increasing soil salinity. It was also observed that higher values of Na/K and Na/Ca rations in shoots affected growth parameters while higher values of these rations in straw affected yield components and grain yield. However, IR 6 having relatively lower values of Na/K and Na/Ca rations proved to be the most salt-tolerant rice among the three varieties studied.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Water Table Recession in Subsurface Drained Soils119130ENAtsushiYomota10.18926/fest/19734Theoretical drainage equations are intensively tested in many parts of humid and arid regions and are commonly used in drainage design. However, this is still a great concern in Japan as the drainage design is exclusively based on local experiences and empirical basis. There is a need therefore to evaluate the theoretical drainage equations under Japanese field conditions to recommend equations for design of subsurface drainage systems. This was the main motivation for this study. While drainage requirements of different crops are difficult to define quantiatively, adequate drainage can probably be provided by designing for a given water table recession rate. The method used was to measure the rate of water table recession and drain outflow after cessation of a considerable amount of rainfall. Based on these measurements, soil parameters were determined and nine drainage equations were tested in simulating water table recession against actual field data of two drained experimental sites, located in Soja city west of Okayama prefecture, Japan, having drain spacing of 10 and 8.5 m for a period of two years. An experimental drainage equation was also derived and theoretical equations were recommended for design of subsurface drainage systems.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999都市地域整備と環境共生―岡山県における事例研究101118ENHiroshiInouye10.18926/fest/19732No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Dynamic Behavior of Bed Material around Bridge Pier under Abrupt Change of Water Pressure93100ENHiroshiNago10.18926/fest/19729Major failure of structures usually occurs during flood flows due to scourin, sinking and sliding. These types of failure are considered to be in close relation to the dynamic behavior of bed material around the structures. Failure of bridges due to the phenomenon of scouring around piers is a common, natural problem of river hydraulics. Experiments were carried out to investigate the characteristics of pore water pressure and effective stresses in the bed material around a circular bridge pier under abrupt change of water pressure. A laboratory model was used to clarify the effect of the variation of water pressure to determine the mechanism of the collapse of circular bridge pier during flood or storm waves. The experimental results showed that the bed material under suddeen change in drop of water pressure near the pier was weakenend by an increase in excess pore pressure, followed by a considerable quick removal of bed material.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999In situ determination of field-saturated hydraulic conductivity of subsurface soil of vadose zone by technique of Pressure Infiltrometer8192ENIchiroKohnoYujiTakeshita10.18926/fest/19726For reducing or bridging gap between small scale laboratory investigations and large scale field investigations, a simple and portable model which is based on real situation and has a compatibility to laboratory core sampling, the pressure infiltrometer technique is introduced for determination of field-saturated hydraulic conductivity. The field -saturated hydraulic conductivity, K(FS), is obtained from measurements of steady flow rates applying constant head as well as falling head principle. The device is also used for field core sampling on which laboratory constant head as well as falling head tests is carried out. The field device is validated through comparison to laboratory core sample experiment and other existing methods. This paper describes first time a versatile field device representing good performance for in situ determination of hydraulic parameters in a short time.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Hilbert C* -bimodules and countably infinite continuous graphs7780ENTsuyoshiKajiwara10.18926/fest/19724In this paper, we contruct Hilbert C* -bimodules for continuous graphs whose vertexes are countable 1-dimensiona tori, and show some uniquness property of the C* -representatiion of these bimodules.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Statistical threshold model and radiosensitivity on binary data of radiation related cataract and epilation5775ENMasanoriOtakeYutakaTanakaMakotoTomita10.18926/fest/19719An analytic approach that provides explicit estimates of risk on cataract and epilation data is evaluated by reasonableness of conceivable relative risk models regarding a simple, odds, logistic or Gompertz regression method, assuming a binomial distribution. In these analyses, we apply relative risk models with two thresholds between epilators and nonepilators from a highly characteristic lesion of which radiation cataract does not occur around 2 gray for a single acute exposure. The risk models are fitted to the data assuming 10 as a constant relative biological effectiveness of neutron. The likelihood of observing the entire data set in these models fitted is evaluated by an individual binary-response array. Estimation of a threshold with or without severe epilation and the 100(1-α )% confidence limits are derived from the maximum likelihood approach. The relative risk model with two thresholds can be expressed as a formula with structure of Backgroun × RR, where RR includes threshold models with or without epilation. The radiosensitivity of ionizing radiation to cataracts has been examined for the relationship between epilators and nonepilators.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Analysis of non-stationary spatial data : A study on the performances of Universal Kriging, Median-Polish Kriging and LOESS3755ENSeung BaeChoiYutakaTanaka10.18926/fest/19714One of major problems in spatial analysis is to estimate the value z(s(0)) at an unknown location s(0) using the information about observations z(s(α)), α = 1,…,n. In this article, we will perform a numerical study about some methods for this problem. That is, we examine both the tranditional statistical method which does not take into account spatial correlation and the spatial statistical method which takes into account spatial correlation by applying them to a set of non-stationary spatial data. We compare the predictive powers of these methods. More precisely, we choose Universal Kriging(UK) and Median-Polish Kriging(MPK) as spatial statistical methods, and locally weighted regression or LOESS as a traditional method. As the major criterion for comparison, we use the so-called PRESS statistic, and also draw the prediction surface plot and the prediction standard error surface plot as minor criteria. A real numerical example of non-stantionary spatial data is analyzed for the comparison among the above three methods.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999等式制約を含む統計モデルにおける局所影響の評価1935ENFanghongZhangYuichiMoriYutakaTanaka10.18926/fest/19712No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999合否入れ替わり率とその解析ソフトウェアSRAS718ENTomoyukiTarumiYoshiroYamamoto10.18926/fest/19708No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099411999Circadian Oscillations in Systems of Biochemical Oscillators Coupled to Stationary Systems16ENMasajiWatanabe10.18926/fest/19695According ot previous studies, we may expect that slow oscillations can occur in dynamics of a parameterized family of systems in which a biochemical oscillator is coupled to a stationary systems. We introduce some numerical results that confirm our expectation. The results suggest that it is possible for slow oscillations to occur in dynamics of a system in which an active oscillatory unit is coupled to a passive medium, and that it is possible for circadian oscillations to arise from fast glycolytic oscillations in such a coupled system.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009奥付ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009環境理工学部教員一覧表（2008年12月1日現在）3737ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009表紙・英文目次ENNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009岡山県の耕地利用の推移2938ENFumikazuIchiminami10.18926/fest/15046In this study, a long-term transition on arable land use and planted acreage in Okayama prefecture is mainly examined. There were no substantial changes at the area of the cultivated acreage and the use level of arable land before World War II. In statistics after 1965, the use level of the cultivated acreage and arable land has decreased remarkably. In this point, it is clearly observed that the cultivated acreage in 2005 has decreased by 60 percent compared with 1960 and the area of the field has importantly decresed in the same period about 80 percent. In addition, the uncultivated arable land in 2005 has increased double (or more) compared with 1975. Finally, this analysis concretely illustrated decreasing of man's concern for the production of food. Because a part of the safety of food is threatened recently, it is important in above all to procure food safely. Moreover, to reinforce a domestic production of food the decision and the execution of an effective policy are requested.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009Laboratory Investigation of Ethanol/Bentonite Slurry Grouting into Rock Fractures: Preliminary Resalts2328ENMakotoNishigakiMitsuruKomatsu10.18926/fest/15045During underground space development, groundwater seepage mostly occurs which may seriously affect the stability of deep excavations as well as retard progress of construction. For smooth progress of work, effective construction and operation of a disposal facility for high level radioactive waste (HLW), it is important to control seepage into excavations by sealing off fractures or fissures and excavation disturbed zones (EDZ) to control groundwater inflow during the construction phase of such a facility. In this study, a series of experiments were conducted on ethanol/bentonite slurries in the laboratory with the aim of determining the effect of a hydrophilic solvent such as ethanol on the hydraulic and injection characteristic of bentonite slurry for the sealing of fissures to control ground water seepage during the construction phase of a repository. Preliminary results revealed ethanol/bentonite slurry as an effective grouting material capable of penetrating micro fractures (100μm or less) and with the permeability of the grouted medium being as low as 10E-7cm/s. The results also show that the effectiveness and efficiency of grouting is dependent on the type of injection and fissure size. Dynamic injection was observed to be efficient as it was able to inject high dense slurry.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009Capillary cut design for soil-groundwater salinity control1722ENMakotoNishigakiMitsuruKomatsu10.18926/fest/15044Soil-groundwater salinity issues have assumed a worldwide dimension. It is believed that when groundwater level is less than 2 m there is the possibility of salinity transfer between the soil and groundwater due to factors such as capillary forces. One-dimensional column tests were conducted in the laboratory to find a suitable capillary cut design. The capillary cut material comprised a 20 cm thick 2–4.7 mm and a combination of 2–4.7 mm and 9.5–19 mm gravel material. In all, four different designs were tested by compacting Oji sand in the various columns. Groundwater level of 0.75 m from the top was maintained while salt solution of 10% concentration was allowed to flow under capillary forces through the columns. The water content in the columns were monitored using frequency domain reflectrometry-vector analyzer (FDR-V) after which soil samples from 10 m interval in each column was taken for electrical conductivity measurements. The results showed that 5 cm thick, 2–4.7 mm gravel sandwiching coarser material (e.g. 5 cm thick 9.5–19 mm or 10 cm thick 9.5–19 mm gravel material) proved to be very useful design to cut capillarity.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009Determination of Soil-Water Characteristic Curves of Unsaturated Sandy Soils Using Membrane Filter with Stainless Wire Mesh1316ENMakotoNishigakiMitsuruKomatsu10.18926/fest/15043Soil-water characteristic curve (SWCC) is an important soil function in an unsaturated soil mechanics field for design and analyses of any unsaturated earth structures. Determination of SWCC is not easy and more so time consuming. Generally, ceramic disc with high air-entry value has been used in the pressure plate apparatus for this purpose by many people. Now-a-days membrane filter is being used as a suitable alternative to ceramic disc. However, experience shows, it has disadvantage of breakage after one time use especially with coarse grain soils (sandy soils). In this study, membrane filter with stainless wire mesh was used to solve this problem and the SWWC was compared with the results obtained without wire mesh. Results showed that membrane filter with stainless wire mesh can be used to determine the SWCC for coarse grain soils.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991412009Evaluation for interventions against influenza of H5N1 in Sapporo-city by using an Individual Based Model111ENTomokoMorimotoTomohiroZenihanaYusukeMaitaniHirofumiIshikawa10.18926/fest/15042The spread of the highly pathogenic avian influenza (H5N1) among domestic poultry and wild birds has caused global concern over the outbreak of an influenza pandemic of H5N1. The "Pandemic Influenza Preparedness Action Plan" determines the strategy against an influenza pandemic in Japan. Simulations were carried out using an individual based model (IBM). The IBM targeted a virtual area with a population of 100,000 using the demographic data of Sapporo-city, Hokkaido. The effectiveness of targeted antiviral prophylaxis (TAP), geographical targeted antiviral prophylaxis (GTAP), school closure, and pre-pandemic vaccination were explored. Moreover, this study focused on infections among children, who have a high attack rate, and analyzed the effectiveness of interventions for school-age targeted antiviral prophylaxis (STAP). Consequently, TAP, which is recommended by the "Pandemic Influenza Preparedness Action Plan", was found to have high effectiveness in the suppression of the outbreak. Moreover, this study showed the importance of intervention among children, such as STAP and school closure, to prevent the spread of H5N1 influenza.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008メキシコの半乾燥地における異なる有機物の施用効果125128ENHaruyukiDanYukihiroHayashiHideoAgoTadashiAdachi10.18926/fest/12838In semiarid areas of Mexico, lack of organic matter is a major constraint for production of corn and frijol beans, the main crops of the region. A multi-year experiment was carried out at the CENGUA Experiment Station, Guanajuato State, Mexico. Soil moisture was highest in the treatments with 100% or 67% of corn residues. Yields of frijol beans increased as the proportion of corn residues increased in all three years, but there was no significant difference between the treatment with all corn residues and the treatment with one-third reduction of corn residues in two of the three years. The
harvest index was highest in the same two treatments with higher proportions of corn residues in the last years. These results suggest that corn residues can be reduced by one third in fertilization of corn-frijol bean systems while maintaining adequate frijol bean yields. This could assist in
establishment of sustainable corn-frijol bean-cattle integrated agriculture in semi-arid areas of Mexico.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Novel Fluorescent Probe Based on Anthryl Dendron Having Oligo(ethyleneoxide) Groups at the Terminals121124ENYutakaTakaguchiYasushiYanagimoto10.18926/fest/12837Amphiphilic anthryl dendrons 5 and 6, which have carboxylate groups or oligo(ethyleneoxide) groups at the terminals, show solvatochromic properties. Reaction efficiency of photodimerization and dynamic light scattering (DLS) experiment of 5 and 6 reveal that formation of the aggregate of dendrons 5 or 6 plays a crucial role in this solvatochromism. Interestingly, solvatochromic property of anthryl dendron 6 was useful for determination of the ratio of methanol/water in solution as a fluorescent probe.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Phosphorus and Biomass Distribution, and P-efficiency by Diverse Brassica Cultivars Exposed to Adequate and P-stress Environment111119ENYokoOkiTadashiAdachi10.18926/fest/12836To acclimate under orthophosphate (Pi) starved environment, plant species and cultivars display an elegant myriad of Pi-adaptive and rescue responses via reprioritizing internal Pi use and maximizing external Pi acquisition by reprogramming metabolism and restructuring root system architecture.Exploitation of considerable genetic diversity both between and within crop species and harnessing of
these genetic variations can lead us to develop smart plants with improved P-acquisition, growth and yield under P-deprivation. To elucidate the effect of P-stress on plant growth, and P-efficiency under Pstarvation,
14 diverse Brassica cultivars were grown hydroponically in a climatically controlled chamber using sufficient (200 and 400 μM) and stress (10 and 20 μM) P-levels using ammonium phosphate (NH4H2PO4) as a P source. Cultivars showed differential growth behaviour in terms of biomass accumulation (shoot and root dry matter partitioning), percent distribution of Pi-concentration ([P]) and P-contents in plant parts (roots and shoots), and P-efficiency ratio (% PER)(relative shoot growth)
indicating considerable genetic diversity among the tested Brassica cultivars. PER and the proportional
increases in shoot dry matter (SDM) accumulation (SDMmax/SDMmin) in response to the P levels assisted
in categorizing the cultivars into efficient and inefficient utilizers of the absorbed P from an ambient environment. Cultivars were classified into efficient responsive (ER), efficient non-responsive (ENR), non-efficient responsive (NER) and non-efficient non-responsive (NENR) by plotting ordination plots between PER and SDMmax/SDMmin under P-stress environment. Differential PER values at stress P levels corresponds to high P levels suggest that P efficiency mechanisms can be different from one cultivar to another within a give plant species and cultivars exhibiting high PER values are better choice to thrive under P-starvation.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Effects of Basic Slag, Aggregate Size and Groundwater Treatments on the Production of Chilli in Acid Sulfate Soils in a Simulation Study103109EN10.18926/fest/12835A simulation study was conducted to evaluate the effects of basic slag (BS10 and BS20: basic slag 10 and 20 t ha-1), aggregate size (A20 and A30: aggregate sizes of soil, less than 20 and 20-30 mm) and groundwater depth (Gw0: no influence of groundwater and Gw50: groundwater beneath 50 cm of the soil surface) as physico-chemical amendments in two pre-leached (leached for a week through tap water to remove
excessive acidity and salinity from the soil before transplantation) acid sulfate soils of Badarkhali (Salidic
Sulfaquept) and Cheringa (Typic Sulfic Halaquept) series in relation to the production of Chilli (Capsicum annum L.). Maximum growth and yield of chilli were recorded by the treatment combining A30Gw50BS20 in both the Cheringa (green chilli weight: 4.82 t ha-1) and Badarkhali (4.51 t ha-1) soils. The application of basic slag (BS20) was found to be the most effective among the individual treatments, followed by the BS10 > A30 > Gw50 treatments. The application of BS20 increased the yield in combination with the Gw0 treatment
by 40% for A20, while by 107% for A30 in the Badarkhali soil. On the other hand, in the case of Gw50, these
increments were 49 and 141% for A20 and A30, respectively. The application of BS at the highest rate (BS20) to the Cheringa soil was more effective compared with the A20 and A30 treatments in the Badarkhali soil. The same rate of BS20 in combination with the Gw50 treatment increased the yield by 59 to 147% in the Cheringa soil compared with 49 to 141% in the Badarkhali soil. Almost similar and significant (p≤0.05)
effects were observed for the other growth parameters of chilli cultivated in both soil series.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Enumeration, Isolation and Identification of Nitrogen-Fixing Bacterial Strains at Seedling Stage in Rhizosphere of Rice Grown in Non-Calcareous Grey Flood Plain Soil of Bangladesh97101EN10.18926/fest/12834Non-symbiotic diazotrophic systems for biological nitrogen fixation (BNF) in agriculture are most promising but the possibility for the extension of nitrogen fixation by rice is still speculative. Accordingly, the present study was conducted for the Enumeration, isolation and identification of nitrogen fixing bacterial strains at seedling stage (30 days after seed sowing) in rhizosphere of rice (BR 10, Oryza sativa L.) grown in Non-Calcareous Grey Flood Plain soil of Bangladesh. The soil is classified as ‘Inceptisol’ order and ‘Aquept’ suborder. It was identified as ‘Dhamrai series’, had ‘silt’ texture, pH 7.1 and 5.5 C/N ratio. The present results of the microbial tests on the rice rhizosphere soil evinced that out of 263 isolates, only 91 were branded as nitrogen fixing organisms per gram of soil, which was about 34.6 % of the total isolates. As per selection criteria, four individual strains were considered for identification. Biochemical tests were conducted for
proper identification and the selected strains were identified as Enterobacter spp., Klebsiella spp., Bacillus
spp. and Azospirllum spp.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Response of Eggplant to Integrated Approaches for Sustainable Reclamation and Improvement of a Cheringa Hot Spot of Acid Sulfate Soil8595EN10.18926/fest/12833The application of basic slag (BS20 and BS30: basic slag 20 and 30 t ha-1) and aggregate size (A20 and A30: aggregate sizes of soil less than 20 and 20-30 mm) and different techniques (Tech 1: pyrite at top, jarosite at middle, and top soil at the bottom of ridge; Tech 2: top soil at top, pyrite at middle, and jarosite layer at the bottom of ridge) exerted significant (p≤0.05) positive effects on the growth and yield of eggplants cultivated under field condition and the effects varied not only with the kinds and amounts of amending materials but also with the techniques applied. The soil showed a silty clay loam texture, initial pH value of 4.1, pyrite content of 55 g kg-1, base saturation of 47%, ECe value of 3.6 dS m-1, high exchangeable Fe3+ and Al3+ contents of 1.47 and 5.29 cmolc kg-1, respectively. The pH value of the average soil data obtained from all the treatments during fruit set (95 days after transplantation) of eggplants was found to be increased in pH by 1.2 units higher compared with the control (i.e. initial pH value). The contents of P, K, Ca and Mg in the average soil data during fruit set were found to be increased (IOC = increased over control) by 41 to 127% IOC, while the contents of Al3+, Fe3+, Na+, Cl- and SO4
2- in the soil were found to be decreased by 28 to 92% IOC.
The different treatments on eggplants grown under the modified-plain-ridge-ditch techniques in the Cheringa acid sulfate soil significantly (0≤0.05) increased the fresh yield of eggplants, and the increment was more pronounced with Tech 2. The maximum yield of 17.8 t ha-1 of eggplant for Tech
1 and 20.1 t ha-1 for Tech 2 were recorded by the application of BS30 in the soils of smaller aggregates (A20) at the ridges of Tech 2, followed by the A30BS30 treatments in both the techniques. The lowest quantity of 1.7 t ha-1 yield was recorded by the control treatment. The eggplants grown in
the ridges of both the techniques exhibited the best responses on N, P, K, Ca and Mg contents in eggplant tissues during fruit set. As expected, the lowest contents of these nutrients in the eggplants were recorded in the control treatment. Sulfur content of the eggplants grown in the control plots was 3.6 g kg-1 and was in the range of adequate S content (4 g kg-1). However, the S contents in the
eggplants grown in different treatments were significantly (p≤0.01) lower compared with the adequate level. The effectiveness of the treatments for the reclamation of the soil in relation to the growth of eggplants was: Tech 2 > Tech 1, BS30 > BS20, and A20 > A30. The results suggest that the physicochemical properties of the soil, and the growth, yield and nutrition of eggplants were strikingly improved by the application of flash leaching followed by BS30 and A20 treatments in the ridges of Tech 2, and are regarded as the best reclamation measures for this acid sulfate soil.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008岡山県におけるブドウ生産の推移7584ENFumikazuIchiminami10.18926/fest/12831In this paper, we aim to explain the history and areal distribution of grape production in Okayama prefecture with the special attention to the main kinds of grapes. Although Muscat cultivation in glasshouse was already been introduced in the 19th century, grape production had remarkably increased up to mid-20th century. After various kinds of grapes such as Neo-Muscat and Campbell Early have been
cultivated, it has come to concentrate on the production of Pioniere in Okayama prefecture. The cultivated area of grapes is, however, decreasing gradually due to aging in the farm labor force and the lack of agricultural successors. In the light of the investigations, this research subsequently stated the outline and the transition of the grape production with the exsisting statistical materials etc.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Neutralizing Capacity of Basic Slag in Acid Sulfate Soils and Its Impacts on the Solubility of Basic Cations under Various Moisture Regimes6774ENTakeoAkae10.18926/fest/12830An incubation study was conducted with the topsoils (depth: 0-20 cm) of two different series namely Cheringa (silty clay loam, pHwater 3.6, electrical conductivity = EC 18.5 dS m-1,
CEC 17.2 c mol kg-1, organic matter = OM 39.1 g kg-1, and Badarkhali (silty clay loam, pHwater 3.9, EC 19.0 dS m-1, CEC 18.40 c mol kg-1, OM 30.7 g kg-1) acid sulfate soils to evaluate the effectiveness of basic slag (BS) for the neutralization of acidity and solubility of basic cations.
These soils received BS at the rate of 0, 11, 22 and 33 t ha-1 under various moisture regimes (moisture at saturated condition, i.e. 100 % moisture, moisture at field condition, i.e. 50 % and wetting-drying cycles of those 50 and 100 % moisture levels). The impacts of these treatments on some selected properties and changes in water soluble bases in these soils were studied at different periods of 180 days of incubation. The application of BS was found to be increased
the pH of soils from 3.6 to 5.1 for Cheringa; 3.9 to 5.2 for Badarkhali soils during the 180 days of incubation. These increments were more striking with the highest doses of BS at 33 t ha-1 under saturated moisture conditions in both the soils. The EC of the soils had not much influenced by the application of BS, regardless of time. The treatments were exerted significant (p≤0.05) effects on the solubility of basic cations in different periods of incubation. The
maximum release of the bases were recorded during 180 days of incubation under saturated moisture condition and the findings will be supportive for planning of crop production on these soils.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008State of the Art on Filter Design and Particle Clogging; and Proposed New Numerical Approach to Redesign6366ENMakotoNishigakiMitsuruKomatsuKojiKumamaru10.18926/fest/12829Filters are essential in the design of embankments/dams, drains and wells for water and oil supplies. As
a result of these functions, filter use is increasing. In order to use the required filter, various empirical relations
have been given based on mathematical and field experience. However, these guidelines have not
worked to perfection considering the fact that clogging within the filter face is a serious challenge. A
short review on filter design criteria is given in this script coupled with a numerical formulation to propose
the design limits.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Numerical Study of Effects of Tsunami Wave Generated on Nankai Trough5762ENShinyaSumidaKazuhiroYamamotoMasajiWatanabe10.18926/fest/12828Numerical techniques to simulate tsunami waves are described, and numerical results are introduced. A finite difference method is applied to shallow water equations to analize the propagation of tsunami wave. Numerical results to simulate a tsunami wave generated on the Nankai Trough
are introduced.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Detection of Hotspot for Korea Earthquake Data using Echelon Analysis and Seismic Wave Energy5156ENFumioIshiokaKojiKurihara10.18926/fest/12827Echelon analysis (Myers et al., 1997) is a method to investigate the phase-structure of spatial data systematically and objectively. This method is also useful to prospect the areas of interest in regional monitoring of a surface variable. The spatial scan statistic (Kulldorff, 1997) is a method of detection and inference for the zones of significantly high or low rates based on the likelihood ratio. These zones are called hotspots. The purpose of this paper is to detect the hotspot area for spatial data using echelon. We perform echelon analysis for Korea earthquake data. We use ESRI’s ArcGIS that is geographical
information system (GIS) software to make the meshed areas and get contiguity information of these areas. With this contiguity information on the meshed areas, we detect the hotspot area using echelon analysis and spatial scan statistics. In addition, we compare with the result of analysis based on the total of number of times simply and the seismic wave energy.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008岡山市における地価公示価格の推定とその表示システムについて4349ENKazuoNakaoTomoyukiTarumi10.18926/fest/12824The posted land price is a decrared land price from Land Appraisal Committee, and current market price is selling price of the market.
In this paper, we investigate the methods to estimate land price from the posted land price in Okayama city, and create the visualizing system of the price on.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008最終処分場に関する住民の意識調査3542ENMyungjinNaYusakuOnoYoshiroOnoKojiKurihara10.18926/fest/12820As construction of final waste disposal site is essential recently, a problem where we should build it becomes important issue. However, public opposition occurs for the construction because the final waste disposal site has negative image such as pollution of various kinds, increase of traffic volume and noise by truck and bulldozer, and aggravation of living conditions. Public opposition is the most critical problem in constructing final waste disposal site. The source of public opposition has been characterized as NIMBY or not-in-my-yard. This paper presents a survey of the resident awareness on final waste disposal site, and attempts to find factors which affect the public opposition using logistic regression analysis and CART(classification and regression tree).No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Analysis of the effectiveness of control strategies against bioterrorist smallpox attacks by using Individual Based Model2333ENTomohiroZenihanaNaotoHisakaneTomokoMorimotoHirofumiIshikawa10.18926/fest/12819We carried out simulations of various scenarios for bioterrorist attacks using smallpox occurring in a virtual area set up on the basis of the census of Okayama-city, Japan, which predict the effect of control strategies against bioterrorism and the loss scale. On simulating a smallpox epidemic, we followed the method of the Individual Based Model stochastically, which can treat the population in the virtual area as individuals. Individuals have personal information, behavior patterns, and interactions among social
groups. We took into consideration the influence of residual immunity due to past vaccination. We considered Traced Vaccination (TV) and Mass Vaccination (MV) strategies against bioterrorism. We investigated the effect of TV and MV strategies on the suppression of smallpox epidemics. Consequently, the TV strategy was found to have higher effectiveness than the MV strategy.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008川口市犯罪データの空間分析1722ENYukiOhshimoTomoyukiTarumi10.18926/fest/12818In this paper, we built some models of the spatial data, and evaluate those, using the crime data of Kawaguchi city, Saitama prefecture in Japan. Compute the Moran’I statistics of five crime data related to thefts in the city, the value of sneakthief take the aggregation. So, we pay attention to the sneak, and make a model to estimate the incidence of the events. As a regression, we select the old-age index among regional indexes. Applying a simple regression(SR), a spatial autoregressive model(SAR), a geographically weighted regression(GWR) , we evaluate these models. In GWR model, it is interesting that there are some sections in which the sign of the coefficient takes the opposite versus SR and SAR
models. So, stratifying the data by the sign of it, we investigate to data precisely.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008石垣島におけるマラリア流行解析のための統計モデリング715ENMasaoUekiYuukiNakagawaKaoruFuedaHirofumiIshikawa10.18926/fest/12816It is necessary to consider a stochastic variability in modeling malaria epidemic behavior since the malaria infection cycle essentially depends on stochastic elements. For this requirement, we need to construct an appropriate statistical model from available data in advance. In this report, we provide some statistical models for the analysis of malaria epidemic behavior at Ishigaki Island. These models can be used for recurrence of past malaria epidemic and prediction of future malaria epidemic at Ishigaki Island.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-90991312008Concepts of Repository and the Functions of Bentonite in Repository Environments: A State – of – the – art review15ENMakotoNishigakiMitsuruKomatsu10.18926/fest/12814In an effort to secure the comfort of all aspect of life and security through electricity production, research, nuclear weapons production and medical uses, radioactive waste is being generated throughout the world as a result. Without pro – active management and protection, the hazardous nature of radioactive materials can pose serious threats to human health and the environment. A waste containment or disposal
facility is required to isolate the waste from man and the biosphere to avoid any undue radiation exposure.
Deep geological repository or disposal facility is considered as an effective way to isolate high level radioactive
waste, HLW from the human environment, for which a multi – barrier system plays a very significant role. In this paper, literature collection was carried out, aimed to overview the present knowledge about the concepts of repository for HLW and to identify technologies that are currently available in the nuclear industry worldwide and the current state of barrier technologies for hazardous waste sites.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996≫Digitaler Schein≪-Vile'm Flussers≫ Theorie des Schreibens≪311320EN10.18926/fest/116581.) Vorbemerkung 2.) Uber das Verhaltnis von Schrift und Geschichte 3.) Widerstreit zwischen alphanumerischen und digitalen Codes 4.) Anforderungen an den Stil: ≫Ballungen≪versus≫Wattebausche der Software≪ 5.) Digitaler Schein, virtuelle und alternative Realitaten 6.) Zur Kritik des Flusserschen AnsatzesNo potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996ある外国語教授法の試み ―ドイツ語をドイツ語として―289310ENAtsuhiroKawabata10.18926/fest/11656No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Criterion for Assessing the Big Civilization277288ENNaohikoTonomura10.18926/fest/11655This paper is an attempt to establish an objective criterion for civilizations, in order to treat them impartially and give them a fair assessment. First, theories up to the present about civilizations including those of Spengler and Toynbee are introduced. Second, the criterion presented by Bagby to distinguish major civilizations and peripheral civilizations are examined and proved to be subjective. Then the author proposes as an objective criterion for big civilizations just the pattern of succeeding four stages with the span of 400~500 years each. Big civilizations meeting this requirement which total eight or nine are divided into two types according to the difference of their nature. Lastly is shown how four puzzles of world history that have hitherto caused a lot of disputes (feudalism, absolute power of royalty, capitalism and modernization) can be solved through the recognition of these big civilizations.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996虚洞に満ちるもの ―Thomas Hardyの恋愛詩における'Hollow'のイメージ263276ENKen-ichiKanzaki10.18926/fest/11654No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996オーストラリア口語英語の特徴247261ENShogoKashiwase10.18926/fest/11652English is spoken in many countries, but the Australian brand is unmistakable. 'G' day, mate' will be curious to non-Australian people, but it will be delightful to the ears of Aussie. In this paper, a piece of (1) 'Australian Daily Spoken English' is displayed as a sample of Australian daily spoken language. A brief list of (2) 'Food Terms' is displayed to show the general features of Australian spoken English. The brief lists of (3) 'Shorten Forms', (4) 'Rhyming Slangs' and (5) 'Common Aussie Expressions' are displayed to show the features of Aussie English.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996規制緩和と中山間地域振興策229246ENTerutoshiIshihara10.18926/fest/11651No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996重合過程を利用した芳香族高分子の高次構造形成221227ENYuhikoYamashitaKunioKimuraHiroshiTsugitaFumiyoshiYokoyama10.18926/fest/11649Morphology and formation mechanism of poly (4'-oxy-4-biphenylcarbonyl) (POBP) crystals obtained by solution polymerization were firstly treated. It was concluded that the formation mechanism of the bundlelike aggregates of fibrillar crystals in POBP was fundamentally simillar to that in POB whiskers. Secondly the copolymerization effects of m-acetoxybenzoic acid and 4-(4-acetoxyphenyl) benzoic acid on the morphology of POB whiskers were studied. The experimental results strongly supported our proposal for the formation mechanism of whiskers which was consisted of crystallization of oligomers with a critical length as lamellae from solution and solid state polymerizationof oligomers between lamellae. Finally, the formation mechanism of poly (p-oxycinnamoyl) spherical products during solution polymerization was treated. The formation of these spherical products could be understood by overlapped phase diagram of melting depression curve and consolute curve of oligomers-solvent system.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Drop Formation in Immiscible Liquid Systems under Condition of Mass Transfer211219ENYoshiroKitamuraTomoyukiOhta10.18926/fest/11647The drop formation in immiscible liquid-liquid systems under mass transfer conditions was experimentally investigated. To know the exact effact effect of mass transfer on drop sizes, the decrease of interfacial tensions due to the presence of solutes has to be evaluate. Interfacial tensions of liquid pairs were measured with a Wilhelmy method as a function of the relative amounts at which both the solution and the solvent were mutually saturated. The interfacial tensions between the liquid pairs mutually saturated at on equal amount were found to be appropriate for the prediction of the drop formation accompanying mass transfer.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Asymmetric Synthesis of Optically Active Malic Acid205210ENSadaoTsuboiShin-ichiroOnoMasanoriUtaka10.18926/fest/11646Chiral reduction of 2-oxosuccinic acid esters with fermenting bakers' yeast gave (S)-(-)- malic acid esters in 34-54% isolated yield with 85-100% ee.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Alキレート化合物とZrアルコキシドより作製したアルミナージルコニアのプロピレンによるNO選択還元活性199204ENKojiKawabataHideyukiYoshimatsuTatsumiYabukiAkiyoshiOsakaYoshinariMiura10.18926/fest/11645An alumina-zirconia (AZ) composite powder was prepared by thermal decomposition of the organic precursors, which were synthesized from ethyl acetoacetate aluminium diisopropylate and zirconium n-butoxide. Specific surface area of AZ was higher than that of alumina-zirconia (ALK) prepared from aluminium sec-butoxide and zirconium nbutoxide. True density of AZ was lower than that of ALK. Selective reduction of nitrogen oxide with propylene in oxygen-rich atmosphere on AZ was superior to that on ALK.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Settlement Prediction Method Using Observed Settlement Velocity193198ENKiyoshiShimadaSin-ichiNishimuraHiroakiFujii10.18926/fest/11639This paper presents a new method for prediction of consolidation settlements of soft grounds. The method is based on the theoretical result which shows that the settlement velocity of soft grounds non-improved or improved with sand drains decreases exponentially with time. Final settlements can be easily derived from the regression analysis for the relationship between the elapsed time and the observed settlement velocity. The method has advantages of its simplicity and capability to give the satisfactorily good estimate of the consolidation settlements, and also the support of the theoretical background.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Prediction of Pore Water Pressures in Several Embankment Dams by Normal and Back Analyses181192ENHiroakiFujiiMutsuyaNaritaKiyoshiShimadaShinichiNishimura10.18926/fest/11636This paper describes the prediction of seepage in the impervious zones of six embankment dams by seepage analysis. In addition, by making use of the available monitored pore water pressure data of the first filling of reservoir, back analysis was carried out to estimate the best fit seepage parameters. The estimated parameters were used for further prediction of pore water pressures in subsequent monitored durations with reasonable accuracy. The accuracy of prediction was evaluated quantitatively by the prediction difference and error index. The results show that the error indices in the upstream sides of the impervious zones are smaller than those in the downstream sides.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Crop Water Use From Shallow Groundwater -Simulation Using Field Measured Soil and Climatic Parameters-169179ENTakeshiMiura10.18926/fest/11635The SWAP93 model was used to predict how much capillary rise would occur in cropped fields. The experimental fields were located in a humid climate and it was thought that contribution from groundwater sources to total water use could be significant. In one field planted with soybean, the model predicted an average daily uptake of 1.3 mm; in another field planted with pumpkin, there was average daily uptake of 0.3 mm; and yet in a third field located in a vinyl house there was average daily uptake of 0.03 mm. These predictions represent about 38,7 and 1% contribution to total water use respectively. Even though there were no measured data to compare with, the results lie within the range of other works reported in the literature.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996土壌水分から見た酸性硫酸塩土壌生成過程とその改良方策135141ENTadashiAdachi10.18926/fest/11630According to recent soil survey data, it has been reported that acid sulfate soils cover areas of about 11,670,000 hectares all over the world and about 40% of those are in South-East Asia. Most of crops could not be grown on those areas without any amelioration due to low soil pH. This report consists of two parts. One is on acid sulfate soil formation in laboratory experiment. Another is on a trial of acid sulfate soil amelioration in field experiment. The results obtained on acid sulfate soil formation, in order to make clear the relationships between the process of oxidation of sulfur compounds and the moisture conditions (moisture suction) in coastal muddy soils, in laboratory experiment are summarized as follows; The concentration of sulfuric ions increase as oxidation of sulfur compounds contained in pyrite, etc. occurs, and as a consequence, the soil pH decreases in the coastal muddy soil (Fig.1). Especially, the soil pH decreased remarkably in the range of pF 2.3~3.4. The activity of soil microorganism takes part in this reaction by helping out with bringing about sulfur oxidation and formation of sulfuric ions. The pH decrease in the soil with autoclaved treatment was only slight at pF values lower than pF 3.0. Accordingly, it is concluded that the decrease of pH in coastal muddy soil occurred mainly due to soil microorganisms which oxidize sulfur compounds under the condition of higher-water than pF 3.0. The results of field experiment is summarized as follows; As a general rule, it is able to remedy the surface acidification of peat/acid sulfate soils by mixing lime dust with plough layer. However, the effect of mixed lime dust is easily disappeared in the area where the acidic ground water table is always high and moves up over the surface in rainy season. Therefore, it was carried out that several experiments for seeking protection against surface acidification due to capillary upward movement of acidic ground water by means of inserting a buffering layer of lime gravel (thickness of lime gravel layer =5㎝) between the top soil and the acidic subsoil (20 ㎝ depth) in the fields, Munoh series which is young acid sulfate soil, at the Narathiwat Land Development Center in South Thailand. The results of soil pH measurement carried out in the field in November of 1985, August of 1987 and September of 1990, it coincides with 2,4 and 7 years respectively after the beginning of the experiments, are shown in Table 3. In the plot of P2 and U1, application of lime dust to the plough layer can increase soil pH rapidly but it's residual effect is not so long. Within a 5 year period, the soil pH is likely to return to below 4. On the other hand, an underlaid lime gravel layer tends to improve the soil around the lime gravel only slight but steadily with time. Therefore, it is concluded that surface soil acidification caused by the upward movement of acidified ground water would be protected against, rapidly and continuously, by both mixing lime dust with plough layer and underlying lime gravel below plough layer. If acid sulfate soil areas would be used as upland fields, much of organic matters in soil are easily decomposed by drying. Therefore, it is suggested that it would be better for these areas to be used as paddy fields, also from the above results.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996岡山市の気温・降水量の経年変化163168ENTakeshiMiura10.18926/fest/11628In this paper, secular changes of air temperature and the amount of precipitation in Okayama city are discussed using observed values at Okayama meteorologiccal station. Special reference is made to 1993 and 1994 in which peculiar changes occurred. The results obtained are summarized as follows: (1) The increasing rate of the annual mean air temperature at Okayama city is 0.85℃/100y. This value is nearly equal to the average of Japan; 0.87℃/100y. (2) The increasing rate indicates seasonal changes, and the rate is high especially in April and May. (3) The rapid increase of the air temperature in the 1980s is due to removal of Okayama meteorological station from the edge of town to the center. (4) The annual mean air temperature in 1994 is 16.9℃, and the monthly mean temperature for July and August are 29.8 and 29.6℃ respectively. These values are new records at the Okayama station. (5) The air temperature in July and August, 1993 are higher than in 1980 when it was much colder in the summer. (6) The amount of precipitation does not show any secular changes.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Estimation of Actual Irrigation Requirement by the Water Balance Method151162ENAtsushiYomota10.18926/fest/11626Actual irrigation situation in a typical upland irrigation district was estimated by the water balance method during the 1993 rainy and the 1994 dry year periods. Soil moisture conditions were analysed for cases where daily district water use was supplied to all the cropped upland farms, and to reduced irrigation area percentages. Consumptive use was obtained through monthly weighted crop coefficients used to reduce penman's potential evapotranspiration. The moisture budget was examined at three levels of total readily available moisture, TRAM, i.e., 20,30 and 40 mm; the effect of upward capillary rise was also considered. The results of this study indicated that the actual moisture conditions in upland irrigated farms is influenced by irrigation area, cropping pattern, stage of crop growth and upward capillary rise in the farms. Actual irrigated area was within the range of about 44 to 100% of cropped area while upward capillary rise was between 0.1 and 1 mm day-1, TRAM level of 30 to 40 mm was considered most appropriate for the district. Monthly effective rainfall percentages from the water balance method were fairly close to that determined by the basic irrigation requirement method for some months. Basic irrigation requirement may therefore be considered to incorporate capillary water contribution.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997Two Books on the Victorian Interest in Hellenism169174ENMasaruOgino10.18926/fest/11624In the 1980s there appeared two books about the Victorian attitude towards the ancient Greeks, or about how the Victorians felt about incorporated the ancient Greek culture. The two books are Richard Jenkyn, The Victorians and Ancient Greece (Massachusetts: Harvard University Press, 1980) and Frank M. Turner, The Greek Heritage in Victorian Britain (New Haven: Yale University Press, 1984). Although they deal with the same subject, their approaches toward the subject are quite different from each other. In this paper, I will pick up two themes from each book-- "Greek Gods and Mythology" and "Plato and his Philosophy" --and see the difference in their approaches.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996開畑地における少雨年と多雨年の雨水保留特性143149ENAtsushiYomota10.18926/fest/11623From the standpoint of water resources development and environmental preservation, rain water retentivity of agricultural and forest lands are evaluated. Measurement of rainfall and runoff has been carried out at the reclaimed upland field of 4.55 ha since 1981. In this article, water retention characteristics of this study basin is compared in a rainy year of 1993 and a droughty year of 1994. In cases of rainfall less than 20mm, most of the rain water infiltrates into the soil layer. On the other hand, about 75% of a heavy rain, such as 300 mm in 1993, runs off the soil surface. Within the infiltrating rain water, the ratio of water which is kept by capillary action and can be used by crops is estimated to be less than 40% in months of rainfall more than 150 mm, but in months of rainfall less than 50 mm, it is estimated that more than 80% of rainfall can be used by crops. The ratio of monthly rainfall which contributes to base flow recharge is 0 to 12% regardless of rainfall amount.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Numerical Analysis of Dynamic Behavior of Highly Saturated Sand Bed around Cylindrical Block under Cyclic Loading of Water Pressure121133ENShiroMaenoTetsuoYamamotoHiroshiNago10.18926/fest/11622In this paper the theoretical procedure to analyze the dynamic behavior of highly saturated sand bed around a cylindrical block under the cyclic loading of water pressure is developed. The fundamental equations were derived for the axially symmetric coordinates. Then, the finite element equations were developed to solve these fundamental equations numerically. Finally, the numerical method was verified by experiments.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997Hardyの"Had You Wept"における仮定法の意義 ―Bécquerの詩との対比において163167ENKen-ichiKanzaki10.18926/fest/11621No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997Vonnegutの大脳コンピューター GalápagosとHocus Pocusを中心として145161ENShigetakeMorokawa10.18926/fest/11620As Kurt Vonnegut (1922--) has written his novels to give warnings about the growing danger of society, in the case of valuation, it is very important to understand what happened in his time and how his works resulted from a historic background. In the late of 1970's and 80's, society underwent a few big changes, for example, signs of communism collapse on a line of the Soviet Union's perestoroika, Japanese rapid economic growth, the unbalanced world economy by the heavy fall in stock prices in America and, in the field of science, the progress of computer technology in the use of a semiconductor instead of a vacuum tube. The mentioned above data were input into Vonnegut's Brain Computer. As a result, Galápagos was publishied in 1985, Hocus Pocus in 1990. In this paper, I analyzes Vonnegut's works from such a point of view, laying stress on Galápagos and Hocus Pocus.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Parameter Estimation of Unsaturated Soil Hydraulic Properties by Improved Suction Plate Method115119ENYujiTakeshitaIichiroKono10.18926/fest/11619The unsaturated soil hydraulic properties are essential data to predict the seepage behavior in the vadose zone. In this paper, a new experimental methodology of determining unsaturated soil hydraulic properties is proposed. The soil hydraulic properties are assumed to be represented by van Genuchten's closed-form expressions. Unknown parameters of this model are identified by using a optimization techniques. The optimization approach is nonlinear least-squares algorithm in corporating finite element analysis of one-dimensional nonsteady seepage flow. The advantages of the methods are in the possibility of identifying the optimal unsaturated soil hydraulic properties and diminishing experimental time. To evaluate availability of our proposed method, experimental results which are determined by proposed methods and conventional method are compared for decomposed granite soil.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996英国の交通政策―よりよい交通環境創造のための理念と実践91113ENHiroshiInouye10.18926/fest/11618The movement of transport policy in United Kingdom and its problems are surveyed in this paper. First, the general trend in transport, road program, and technologies to improve road safety and environment are introduced. Then, concepts to decrease traffic congestion are outlined, followed parking control strategies. Recent issues such as road pricing scheme in London, M25 widening plan, also deregulation and privatisation of transport and their problems are examined.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997六方晶フォージャサイトの格子空間でのポリチオフェンクラスターの合成137143ENMichihiroMiyakeMotohideMatsudaKatsuhitoYagiHirofumiUeharaMitsuoSato10.18926/fest/11617Encapsulation of thiophen and bithiophen in two kinds of hexagonal faujasites (Na-EMT and H-EMT) with various concentration of Cu(2+) ions have been investigated and characterized by means of themoanalytic and spectroscopic methods. From the results, it was found that the progress of polymerization of thiophen and bithiophen in the lattice space depended on Cu(2+) contents, and the encapsulation of thiophen in Na-EMT and H-EMT with Cu(2+) ions yielded polythiophen clusters with electron states of bipolaron. On the other hand, polythiophen clusters synthesized by the encapsulation of bithiophen in H-EMT were found to be mostly polaron states.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997300℃の高圧水蒸気中における石英ガラスの腐食挙動131135ENKoheiOdaKatsumiTakataTetsuoYoshio10.18926/fest/11616Corrosion behavior of silica glass was investigated in high-pressure water vapor and water at 300℃. A linear weight loss in water vapor and a parabolic weight loss in water were observed. The weight loss for the former was larger than that for the later. The fracture strength of the corroded silica glass increased with the content of molecular water in the glass. The strength reduction was observed for the corroded silica glass after dehydration at 400℃ for 1 day.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Turbid intrusion below the thermal staircase in the seasonal thermocline of Lake Biwa7789ENKenjiOkuboHiroshiMorikawaTakashiKimotoYujiTanaka10.18926/fest/11615Thermal 'staircase', a layer of constant temperature between the sheets of the steep gradients, was formed in the seasonal thermocline, which was 2.5 m above the bottom at a point of 18 m deep on the boundary slope in Lake Biwa. Following a sediment resuspension event when a moderate onshore wind blew, bed materials should be suspended up to the thermocline, then settled down forming a staircase above the turbid intrusion. Comparing the observed downward hear flux with the settling flux of sediment, it was found that double-diffusive convection would play an important role on the formation of the whole structure consisting of the staircase and turbid intrusion along with chemical anomalies and dense population of phytoplankters, which were fed by nutrients supplied from the bottom sediment under a typical condition of drought. Laboratory experiments were conducted to demonstrate the thermal and sediment processes in the stratified lake. Resuspension process due to surface and internal waves was examined using a tank with a sloping bottom, while the settling process was investigated by using a deep, diffusive tank. Formative process and scales of the staircase and intrusion were discussed relating with the intensity of resuspension and the buoyancy fluxes.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997活性化反応蒸着法によるZnO系透明導電膜の作製と物性121129ENTakashiFujiwaraTatsuoFujiiTokuroNanbaJunTakadaYoshinariMiura10.18926/fest/11614Zinc oxide films were prepared on silica glass substrates by the use of an r.f. activated reactive evaporation (ARE) method, and were examined by X-ray diffraction (XRD) and scanning electron microscope (SEM). The electrical conductivity of the films and the doping effect of Al ions were also investigated. XRD measurements indicate that the films were c-axis oriented and that an r.f. plasma of Zn and O was necessary for the ZnO film deposition. Substrate temperature, oxygen gas pressure, evaporation rate, r.f. power and Al doping amount affect the c-axis orientation, the growth rate, the microstructure of the films and electrical conductivity. Optimum conditions with a fine texture of the surface and having good ctystallinity as well as good conductivity (≒10(-4)Ω・cm) were as follows : the substrate temperature; 200℃, the total evaporation rate; 1.0Å/s, the oxygen pressure; 2.0×10(-4) Torr, the r.f. power; 250W and the Al evaporation rare ratio; 2～6%. The films with 1.0×10(-3)Ω・cm were prepared at 50℃ for the substrate temperature.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996On Resonance in Periodically Forced Oscillators and Coupled Systems of Excitable Systems and Nonlinear Oscillators5564ENMasajiWatanabe10.18926/fest/11613We analyze some mathematical problems that arise in studies of phenomena observed in the cardiac action. We illustrate a method to characterize the response of a nonlinear oscillator to an external forcing, and introduce some numerical results. We also introduce some results of numerical computation in an example of a coupled system of an excitable system and a nonlinear oscillator.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997Determination of Crossarm Installation in Fill Dams by Back Analysis107120ENHiroakiFujiiKiyoshiShimadaShin-ichiNishimura10.18926/fest/11612This paper discusses a numerical model that can be used to optimize the installation in a zoned type and a homogeneous type fill dam. Before installation in a real dam to evaluate dam behavior, numerical model described in this paper is carried out on a prototype dam to check the optimum installation, using cross arm measurements. Three cross arm installations at the upstream, the core and downstream to measure displacements are considered. The installation options considered are three cross arm combinations for best installation to verify the safety of dams and to reduce cost. Finite element method is used for generating the displecement field in a linear elastic numerical model. The generated data is used as an input data in the back analysis to check the adequacy of each installation option.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Application of Partial Least Squares Linear Discriminant Function to Writer Identification in Pattern Recognition Analysis6576ENHyun BinKimYutakaTanaka10.18926/fest/11611Partial least squares linear discriminant function (PLSD) as well as ordinary linear discriminant function (LDF) are used in pattern recognition analysis of writer identification based on are patterns extracted from the writings written with Hangul letters by 20 Koreans. Also a simulation study is performed using the Monte Carlo method to compare the performances of PLSD and LDF. PLSD showed remarkably better performance than LDF in the Monte Calro study and slightly better performance in the analysis of the real pattern recognition data.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099111996Computational water analysis in an artificial lake: Kojima Lake case4753ENToruSasakiHirofumiIshikawaTsuyoshiKajiwaraMasajiWatanabe10.18926/fest/11610We treat the problem of water pollution by the method of a mathematical model. We illustrate the method of analysis with Kojima Lake. We analyze in-flow and out-flow of the lake, compute numerical solutions of the governing equations of the water flow and the pollutant. The simulation leads to the conclusion concerning the figure of Kojima Lake.No potential conflict of interest relevant to this article was reported.岡山大学環境理工学部Acta Medica Okayama1341-9099211997Structural Analysis of the Naturalistic Landscaping of 'Sakuteiki'99106ENSeirokuOta10.18926/fest/11609Our visual actions take both the sensory and reversible views in the relationship of the mutual coordination between them. And the visual actions, as a whole, realize the sensory scene when having the marked tendency to sensory views, and the reversible scene to reversible views. The author of Sakuteiki classified natural scenery into the landscape types called yo. The landscape types were transformed into the places where humans and nature happened to meet harmoniously. It was the main theme of the author of Sakuteiki to discuss how we should compose rocks in the place. We can find, in Sakuteiki, two manners of looking at nature, such as 'changing the taste' corresponding to the sensory view, and 'in compliance with the requesting mood of 'to the reversible view. They were, in the paper, studied to analyze the naturalistic landscaping of Sakuteiki.No potential conflict of interest relevant to this article was reported.