JaLCDOI 10.18926/fest/11480
Title Alternative A Case Study on How to Teach English at University Adopting TOEIC (2) -Evaluation after three years-
FullText URL 009_167_178.pdf
Author Morokawa, Shigetake| Ogino, Masaru| Kanzaki, Ken-ichi|
Abstract Three years ago, we wrote an essay about our new English-teaching program that adopted TOEIC. We gave out questionnaires to the students with questions ranging from what they thought of English in general to what they thought of our new program. In the essay, we discussed some of the results. Even though students' response was relatively positive in this initial survey, we wrote in our conclusion that we would like to renew and reform our classes. Receiving feedback from students periodically would help us improve their English ability. In order to see the change of students' attitude toward English and also toward our program, we conducted the same research last February. This time the results were not as favorable. For example, the number of students who thought their English ability was poor increased and those who showed a positive attitude toward our program decreased. We discussed and wrote what we learned from those results. We raised the question whether there was a gap between what we tried to teach to the students and what they wanted from us. Possible reasons were discussed on why we could not succeed in stimulating the students into studying English further. In April 2003 Okayama University started a new English curriculum, in which the classes for proficiency tests including TOEIC were opened. Similar classes have been set at many other universities. This survey will be a help to the further development of English education adopting TOEIC.
Keywords TESOL TOEIC questionnaires team teaching
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 167
End Page 178
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313460
JaLCDOI 10.18926/fest/11478
FullText URL 009_163_166.pdf
Author Nakatsu Shogo| Tsuboi, Sadao|
Abstract Diels-Alder reactions of 5,5,5-trichloro-3-penten-2-one and ethyl 4,4,4-trichloro-2-butenoate with cyclopentadiene in the presence of a chiral Lewis acid gave exo-2-acetyl-endo-3-trichloromethyl-bicyclo[2.2.1]hept-5-ene and exo-2-ethoxycarbonyl-endo-3-trichloromethylbicyclo[2.2.1]hept-5-ene with 40% and 7% e.e., respectively.
Keywords asymmetric reaction Diels-Alder reaction asymmetric Diels-Alder reaction chiral Lewis acid trichloromethy group
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 163
End Page 166
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313377
JaLCDOI 10.18926/fest/11476
Title Alternative Evaluation of Surface State of Ceramic Particles Suspended in Aqueous Solution by Potentiometric Titration Method
FullText URL 009_153_162.pdf
Author Miura, Yoshinari| Nanba, Tokuro| Shinoda, Masakatsu|
Abstract Surface states of ceramic particles such as SiO(2), Al(2)O(3), Si(3)N(4) and so on suspended in aqueous alkaline solutions were successfully and easily determined by a potentiometric titration method. Isoelctric point, iep and excess surface charge density were classified and evaluated for many ceramic particles from the view points of aggregation and dispersion of particles and solubility in aqueous solution.
Keywords potentiometric titration method isoelctric point excess surface charge density ceramic particle suspension aqueous solution
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 153
End Page 162
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313753
JaLCDOI 10.18926/fest/11474
Title Alternative Agricultural trend of Inner Mongolia And Policy of Replacing Agriculture by Afforestation A Case Study of Zhuo Zi Xian, Wu Lan Cha Bu Meng
FullText URL 009_141_151.pdf
Author Du, Fu-Lin| Shinabe, Yoshihiro|
Abstract In this paper, Background of Policy of Replacing Agriculture by Afforestation is clarified by means of the relation of the local Agricultural trend due to performance of the policy, united it the influence in the living and agriculture production to farmer in Zhuo Zi Xian. The investigation to the feasibility of the policy is based on the statistics data and the investigation of the agriculture in Inner Mongolia of China. In progress of the Policy of Replacing Agriculture by Afforestation, change of crop structure and development of animal husbadry were mainly seen in local agriculture. It made "Replacing Agriculture by Afforestation" possible. In order to perform this policy, to prevent retrogradation and develop local Agriculture continuously, technological development and spread in the Sustainable Agriculture, Training of Products processing company and Exploitation of the Products market of Agriculture, Forestry and Stockbreeding should be considered in the future study.
Keywords replacing agriculture by afforestation policy make one stop two Return three Agricultural trend Inner Mongolia China
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 141
End Page 151
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313842
JaLCDOI 10.18926/fest/11472
Title Alternative Chemical Changes of Dredged Soil in Kojima Lake from the Viewpoint of Soil Reaction
FullText URL 009_137_140.pdf
Author Takemura, Koichiro| Adachi, Tadashi|
Abstract While dredged soil is increasing, the processing problem isn't solved. So it is expected to use effectively as the soil material. Although, to use dredged soil, the chemical characteristic must be grasped. It is because acidification cause material (pyrite) can be contained in dredged soil. It causes sulfulic ions when it touches air and has the possibility to become acidification. In this experiment, dredged soil in Kojima Lake was made clear that it contained in pyrite and acidified under the oxidation condition. Accordingly, when using dredged soil as ground resources, it is necessary to use as the soil material such as filling-up reclamation under the deoxidization condition.
Keywords dredged soil pyrite acidify soil moisture condition
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 137
End Page 140
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313330
JaLCDOI 10.18926/fest/11470
Title Alternative Diversity of Agricultural Production and Its Change in Tottori Prefecture
FullText URL 009_121_135.pdf
Author Ichiminami, Fumikazu|
Abstract In this paper, diversity of agricultural production and its change was examined for some 45 years in Japan and for 1960, 1980, and 2000 in Tottori prefecture. The concept of entropy was used in order to measure the diversity of the agricultural production which consists of some sections. Agricultural production section in Japan has been diversified in the long run. The ratio of rice has been decreasing gradually for a policy of cutting back on the acreage under cultivation. Although the ratio of stock raising and fruits has increased, it tends in recent years to stagnate. The rate of vegetables has increased remarkably. Combination type for every municipalities was determined with the standard value A method, and complemented examination of agricultural diversity.
Keywords Agricultural Production Diversity Entropy Sustainability Tottori Prefecture
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 121
End Page 135
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313477
JaLCDOI 10.18926/fest/11469
Title Alternative Measurement of thermal conductivity in soils and application of de Vries model
FullText URL 009_117_120.pdf
Author Moroizumi, Toshitsugu| Sato, Yuichi| Sato, Koichi| Sasaki, Choichi|
Abstract Thermal conductivity of soil samples were measured using a twin transient-state cylindrical-probe method. The system of measurement consists of DC power supply, data logger, personal computer, 100cc soil sample, reference material sample, and two heat probes. The typical results were as follows: (1) Thermal conductivity of soils increased according to an increase of soil water content. (2) The thermal conductivity of Toyoura sand was larger than one of Kuroboku soil. (3) The thermal conductivity estimated by de Vries model had good agreement with the measured value.
Keywords Thermal conductivity Twin transient-state cylindrical-probe method de Vries model Volumetric water content
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 117
End Page 120
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313616
JaLCDOI 10.18926/fest/11468
FullText URL 009_111_116.pdf
Author Su Hai| Taniguchi, Takeo| Chouw Nawawi|
Abstract The study addresses the influence of bumpers as reduction measures at the bridge decks. The considered devices are steel spring, steel spring with additional viscous damper or steel spring with additional friction element. Gap between bridge decks remains. The reduction measure is placed at one end of the neighbouring girders. The considered earthquakes are the 1994 Northridge earthquake and the 1995 Kobe earthquake. For the nonlinear analysis a finite element method is used. The investigation shows that compared to the other measures the best reduction of the pounding force can be achieved with a friction device.
Keywords reduction measure earthquake response bridge girder pounding viscous damping friction
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 111
End Page 116
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313773
JaLCDOI 10.18926/fest/11466
FullText URL 009_099_110.pdf
Author Dewan A.M.| Nishigaki, Makoto| Komatsu, Mitsuru|
Abstract Dhaka city, the capital of Bangladesh and home for more than 10 million people, has been affected by seasonal flooding almost in every year, however, the situation aggravates depending on rainfall and surrounding river waters. The aim of this paper is to delineate the flood extent in Dhaka city using digital elevation model (DEM), an integral part of geographic information system. Catastrophic floods of the 1988 and 1998 events are taken into consideration. Hydro-meteorological assessment of these events revealed that the 1988 flood was severe due to the lack of flood protection in the city together with transboundary flow of the major rivers while the 1998 flood was become deluge due to incessant monsoonal downpour along with early peaked of the river water levels. The 1998 event has done colossal damage in the city compare to the 1988 event. Flood extent estimation showed that DEM data is very precious to model inundation in the city, however, in order to be spatially explicit flood model, high resolution DEM is necessary. Finally, flood management issues are reviewed and found that combination of structural and nonstructural measures are necessary to help reducing flood induced losses and damage in the city.
Keywords Dhaka City Floods Digital Elevation Model 1998 and 1988 Floods
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 99
End Page 110
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313678
JaLCDOI 10.18926/fest/11464
FullText URL 009_087_098.pdf
Author Kankam-Yeboah Kwabena| Gyau-Boakye Philip| Nishigaki, Makoto| Komatsu, Mitsuru|
Abstract Three principal river basins are found in Ghana and the Volta River Basin is the major one, covering about three -quarters of Ghana. The basin is shared with Mali, Burkina Faso, Cote d'Ivoire, Togo and Benin. Water from the Volta River Basin is used for drinking water supply, generating hydro-electric power, irrigation, inland fisheries and lake transport. The sustainable management of the Volta River Basin is thus of great importance. Land use activities in the basin are thus closely monitored not only in Ghana, but also in the other riparian countries as well. This paper presents information and data on the water resources and environmental management of the Volta River Basin in Ghana.
Keywords water resources environmental management Volta River Basin Ghana water utilization
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 87
End Page 98
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313917
JaLCDOI 10.18926/fest/11463
Title Alternative Heat Budget on Rice Field
FullText URL 009_081_085.pdf
Author Yang, Dongmei| Iwata, Toru| Miura, Takeshi| Ohtaki, Eiji|
Abstract Experience of flux measurements over tall canopies has revealed that the eddy flux of sensible plus latent heat is about 30% smaller than the available radiant energy flux. A systematic observation was carried out to investigate the imbalance problem on rice field. The rice field represents a complex system consisting of rice plant, irrigated water and soil. Date obtained in this experiment show that appreciable understimations of sensible and latent heat fluxes are not recognized but understimations of 15 to 23% are counted in the soil heat flux.
Keywords Heat budget Eddy correlation method Sensible heat flux Latent heat flux Soil heat flux
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 81
End Page 85
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313468
JaLCDOI 10.18926/fest/11461
Title Alternative The Study of Monin-Obukhov Similarity of Vertical Wind Velocity and Scalar Quantities in the Atmospheric Surface Layer
FullText URL 009_075_079.pdf
Author Ushikawa, Nozomi| Iwata, Toru| Ohtaki, Eiji|
Abstract Standard deviations for vertical wind velocity and scalar quantities, such as carbon dioxide,c, and water vapor,q, were analyzed on the basis of Monin-Obukhov similarity theory in the atmospheric surface layer. The correlation coefficient between scalar quantities c and q ,|R(cq)|, was derived from the similarity functions and can be expressed as the ratio of B(q)/B(c)(B(q)≤B(c)), where parameter B is the value of the normalized standard deviation of carbon dioxide and water vapor at neutral conditions.
Keywords Monin-Obukhov similarity theory Standard deviation Correlation coefficient Carbon dioxide Water vapor
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 75
End Page 79
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313729
JaLCDOI 10.18926/fest/11459
Title Alternative CO(2) Fluxes Measured by Eddy Correlation and Aerodynamic Techniques
FullText URL 009_069_073.pdf
Author Inohara, Sachiko| Iwata, Toru| Ohtaki, Eiji|
Abstract To elucidate the seasonal and inter-annual variation of CO(2) exchanges between the atmosphere and cultivated field in Japan, the CO(2) flux has been measured by the eddy correlation technique at the experimental farm of Agricultural Faculty, Okayama University since December in 1998. The CO(2) sensor, however, does not work under rainy conditions. The improved aerodynamic technique was developed and used to cover CO(2) flux data which were not collected. This technique gives reasonable CO(2) fluxes even in rainy days. The reliability of the technique was also confirmed by comparing CO(2) fluxes with those measured by the eddy correlation technique using data in fine weather conditions.
Keywords CO(2) flux Eddy correlation technique Aerodynamic techniques Dimensionless profile
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 69
End Page 73
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313999
JaLCDOI 10.18926/fest/11458
Title Alternative Numerical Simulation of a Flow Induced by a Pumping-up Facilities in a Lake
FullText URL 009_065_068.pdf
Author Suito, Hiroshi| Nouka, Masakatsu|
Abstract The purpose of this research is solving the flow in a lake which caused by a fan who rotates at the low speed set on the water surface for the purpose of water quality purification of a lake. Although it is shown clearly by various experiments that the water quality in a lake improved by operation of this kind of equipment, the mechanism of the flow was not fully understood. In this research simulation of the flow which was caused by this equipment was carried out numerically, and the aspect of the flow corresponding to various conditions or the form of a lake was investigated.
Keywords Fluid dynamics Numerical simulation
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 65
End Page 68
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313524
JaLCDOI 10.18926/fest/11457
Title Alternative Study on Effects of the Density Current Generator by Experiment and Measurement
FullText URL 009_059_064.pdf
Author Watanabe, Masaji| Yamatogi, Toshio|
Abstract The density current generator (Manufacturer: Nakashima Propeller Co., Ltd., Patent owner: Hitachi Metals, Ltd.) is designed to generate vertical circulation over a wide water area harnessing the density current effect. We present some experimental results that we obtained using a float equipped with a GPS unit to study water flows generated by a density current generator unit set in S-Reservoir in Okayama Prefecture. We also present some measured results concerning the water temperature around the unit. We discuss its effects observing the experimental results and the measured results.
Keywords density current stratification water environment
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 59
End Page 64
ISSN 1341-9099
language 日本語
File Version publisher
NAID 120002313754
JaLCDOI 10.18926/fest/11456
FullText URL 009_053_058.pdf
Author Numaguchi Satoshi| Med Mahmoud Ould Med Lemine| Watanabe, Masaji|
Abstract We study a wind-generated current in Kojima Lake. We introduce an experimantal result which was obtained using a float equipped with a GPS unit. We also present a result of numerical study in which a result from finite element analysis of flow is applied to the momentum equation of the float to simulate its motion.
Keywords water environment global positioning system numerical simulation
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 53
End Page 58
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313924
JaLCDOI 10.18926/fest/11455
FullText URL 009_045_051.pdf
Author Iuchi Takuma| Kajiwara, Tsuyoshi|
Abstract Qualitative analysis for the model of HIV infection in vivo presented by Perelson and Nelson are developed. The local stability analysis is done for the interior equilibrium, and it is shown that, for some paramter value, the interior equilibrium can be unstable and a Hopf bifurcation can occur. It is shown that the boundary equilibrium is globally asymptotically stable. Last, it is shown that this system is permanent.
Keywords HIV Mathematical model Stability Liapunov function
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 45
End Page 51
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313809
JaLCDOI 10.18926/fest/11453
FullText URL 009_037_044.pdf
Author Sung Jimin| Tanaka, Yutaka|
Abstract There have been proposed so far many methods of statistical diagnostics in Cox regression for checking the goodness of the estimated model or checking the adequacy of the data. The former type contains the checking of the overall goodness of fit, the validity of the assumption of proportional hazards and the proper functional forms of the effects of covariates. While the latter type contains the checking whether there exist singly and/or jointly influential observations in the data set. In the present paper we study numerically the performances of various methods of diagnostics including our method of influence analysis for multiple-case diagnostics (Sung and Tanaka, 2003) by analyzing a real data set of lung cancer patients.
Keywords Cox regression Influence function Local influence Influential Subsets Cox-Snell residuals Martingale residual Deviance residual
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 37
End Page 44
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313595
JaLCDOI 10.18926/fest/11451
FullText URL 009_027_036.pdf
Author Nakajima, Atsushi|
Abstract Let A/R be a ring extension and P a subset of Hom(A(R),A(R)). In his paper [5], K. Kishimoto introduced the notion of a P-Galois extension and gave several basic properties of these extensions. The author showed that these extensions are closely related to Hopf Galois extensions and the structure of quadratic or cubic P-Galois extensions over a field were given in [9] and [10]. Recently,the author classify commutative quartic P-Galois extensions over a field of characteristic not 2 in [11]. Continuing [11], we treat commutative quartic P-Galois extensions over a field of characteristic 2.
Keywords Cyclic extension P-Galois extension Hopf Galois extension
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 27
End Page 36
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313989
JaLCDOI 10.18926/fest/11449
FullText URL 009_019_026.pdf
Author Sakamura Kenichi| Dong Wang Xiao| Ishikawa, Hirofumi|
Abstract We have investigated the linear cryptanalysis of AES cipher in this article. As the previous encryption standard DES could be broken by the linear cryptanalysis, NIST decided a new encryption standard AES in 2000. We try to analyze one and two rounds AES cipher by the method of the linear cryptanalysis and learn the limits of this mehtod. AES cipher provides a conspicuous difficulty in breaking its keys because of small bias of its S-box. We report the experimental results of success rate and are led to conclusion that this method would not work well on more than 3 rounds to break keys.
Keywords AES Chosen plaintext attack Linear cryptanalysis
Publication Title 岡山大学環境理工学部研究報告
Published Date 2004-02-27
Volume volume9
Issue issue1
Start Page 19
End Page 26
ISSN 1341-9099
language 英語
File Version publisher
NAID 120002313376