result 1160 件
| JaLCDOI | 10.18926/fest/11560 |
|---|---|
| FullText URL | 003_031_036.pdf |
| Author | Sasaki, Toru| Kajiwara, Tsuyoshi| Ishikawa, Hirofumi| |
| Abstract | We have computed the phase of spreading contaminations in Kojima Lake by using the upwind-type finite element method. We have treated the two cases: the pollutant flows from the Sasagase river and from the Kurashiki River. We see that the upwind-type finite element method is effective in both cases, when the diffusion constant is quite small. |
| Keywords | Upwind-type Finite element method Kojima Lake |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 1998-01-14 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 31 |
| End Page | 36 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313715 |
| 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 | Japanese |
| File Version | publisher |
| NAID | 120002313477 |
| JaLCDOI | 10.18926/fest/11454 |
|---|---|
| FullText URL | 012_107_117.pdf |
| Author | Akhtar M. Shahbaz| Oki, Yoko| Adachi, Tadashi| Khan Md. H. R.| |
| Abstract | Acclimation to orthophosphate (Pi) deprivation via highly coordinated Pi-starvation induced (PSI) classical mechanisms such as copious quantities of H(+) and carboxylates (OAs) exudation, remodeling and modification of root architecture by increasing structural and functional plasticity, enhanced uptake rate and increased synthesis of Pi transporters would reduce or eliminate our current overreliance on expensive, polluting, and nonrenewable Pi-fertilizers. These complicated but elegant morphological, physiological, biochemical and molecular adjustments of Pi-starved plants provide an excellent example of how the unique flexibility of plant metabolism and energy transduction helps them to cope in a typically stressful environment. Pi-starved roots possess enhanced H(+)-ATPase and PEPCase which could result in increasing H(+) efflux and OAs exudations in the root vicinity. This would lead to the rhizosphere acidification, which thereby contribute to the solublization and assimilation of mineral Pi from environment. To visualize the dissolution of sparingly soluble Ca-phosphate and rhizospheric pH changes (in situ), genetically diverse Brassica cultivars were grown on agar media. Newly formed Ca-phosphate was suspended in agar containing other essential nutriens. With NH(4)(+) applied as the N source, the precipitate dissolved in the root vicinity and this was ascribed to acidification. No dissolution was occurred with No(3)(-)-nutrition. In order to observe the pH changes at the media-root interface (rhizosphere), an image analysis was carried out after embedding the roots in agar containing bromocresol purple as pH indicator. Efficient cultivar 'Brown Raya' showed greater decrease in pH than P-inefficient 'B.S.A' in the culture media. Hydroponically grown cultivars were compared with respect to P-utilization efficiency (PUE), P-stress factor (PSF), and Ca- and P-uptake at P-starvation. PUE, and Ca- and P-uptake correlated significantly (P<0.01) with biomass accumulation, indicating that higher P-uptake of efficient cultivars was because of their higher Ca-uptake, which in turn was related to their better P-acquisition and PUE. Remodelling of root architecture of efficient cultivars helped the cultivars to establish a better rooting system, which provided basis for tolerance under P-starvation. |
| Keywords | Brassica Bromocresol purple H(+) -efflux Rhizospheirc pH changes and acidification PUE |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2007-03-15 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 107 |
| End Page | 117 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313432 |
| JaLCDOI | 10.18926/fest/11446 |
|---|---|
| FullText URL | 012_091_098.pdf |
| Author | Akhtar M. Shahbaz| Oki, Yoko| Adachi, Tadashi| Khan Md. H. R.| |
| Abstract | The potential of a crop favorably respond to breeding/selection and bioengineering programs depends upon the nature and magnitude of genetic variability. For effective selection, information on nature and magnitude of variation in population, association of character with dry matter yield and among themselves and the extent of environmental influence on the expression of these characters are necessary. The estimates of genetic parameters help in understanding the role of various plant traits in establishing the growth behavior of cultivars under a given set of environmental conditions. Genetic analysis leads us to a clear understanding of different morphological, physiological and genetic characters and also the type and extent of their contribution to dry matter yield. Six Brassica cultivars were grown in a P-deficient sandy loam soil for 49 days after sowing. Significant variations were observed for all the characters in all the cultivars used in the experiment. All the characters showed high heritability coupled with high genetic advance. Heritability (h(2)) is an approximate measure of the expression of a character. The highest estimates of broad sense heritability (h(2)= 0.90) and relative expected genetic advance (85.72%) were noted for root dry matter (RDM), while the estimate of expected genetic advance at 10% selection intensity was quite high (ΔG = 85.30c㎡) for leaf area per plant. The estimates of coheritability were positive and relatively higher for rootshoot ratio (RSR) in combination with shoot dry matter (SDM) (coh(2) = 2.002) and phosphorus use efficiency (PUE) (coh(2) = 1.875), whereas coheritability estimates were negative between leaf area per plant and RSR (coh(2) = -0.2010) indicating lack of association between these traits. High heritability with high genetic advance was exhibited by all the studied plant traits of cultivars evidencing that the traits could be further improved through individual plant selection. The innate variations within the Brassica gene-pool impel to drive a concentrated effort to understand the basis of adaptability. Access to the relevant genetic traits and information will provide necessary tools to select the optimal combinations of alleles adapted to local and changing growing environments especially nutrient stress conditions such as phosphorus (P) starvation. |
| Keywords | Brassica Coheritability Genetic advance Genetic variability P-starvation Selection intensity |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2007-03-15 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 91 |
| End Page | 98 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313657 |
| JaLCDOI | 10.18926/fest/11429 |
|---|---|
| Title Alternative | Variable selection besed on global score estimation and its numerical investigation |
| FullText URL | 012_029_040.pdf |
| Author | Mori, Yuichi| Fueda, Kaoru| Iizuka, Masaya| |
| Abstract | A variable selection method using global score estimation is proposed, which is applicable as a selection criterion in any multivariate method without external variables such as principal component analysis. This method selects a reasonable subset of variables so that the global scores, e.g. principal component scores, which are computed based on the selected variables, approximate the original global scores as well as possible in the context of the least squares. Three computational steps are proposed to estimate the scores according to how to satisfy the restriction that the estimated global scores are mutually uncorrelated. Three different examples are analyzed to demonstrate the performance and usefulness of the proposed method numerically, in which three steps are evaluated and the results obtained using four cost-saving selection procedures are compared. |
| Keywords | principal components least square orthogonalization cost-saving selection |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2007-03-15 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 29 |
| End Page | 40 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313992 |
| JaLCDOI | 10.18926/11405 |
|---|---|
| Title Alternative | A History of Tests of Infant Development and their Applications to Childcare |
| FullText URL | 003_057_065.pdf |
| Author | Kido, Keiko| Yamaguchi, Shigeyoshi| |
| Abstract | 本研究は、発達検査が保育場面での子ども理解の手だてとなり得ることを明らかにするものである。発達検査を行う一つの効果は、対象となる子どもの発達状況を把握できるという点にある。その上で、子どもの状態をとらえながら、指導に必要な観点を予測することこそが発達検査の意義であるといえる。今日用いられている子どもの発達検査は、ビネー式知能検査を原型として発展してきた。その発達検査の歴史的な変遷について概観し、日本で用いられている発達検査がどう位置づけられているのかを整理し、保育場面での活用の可能性を検討した。 |
| Keywords | 発達検査 (tests of development) 津守式乳幼児精神発達質問紙 (Tsumori's developmental diagnosis method) 保育 (childcare) |
| Publication Title | 岡山大学教育実践総合センター紀要 |
| Published Date | 2003 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 57 |
| End Page | 65 |
| ISSN | 1346-3705 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313431 |
| JaLCDOI | 10.18926/11355 |
|---|---|
| Title Alternative | BIODIVERSITY of the "Integrated Science B" Textbooks in the Upper Secondary School. |
| FullText URL | 004_025_034.pdf |
| Author | Tamaki, Ai| Tanaka, Kenji| |
| Abstract | 平成15年度から新設された高等学校「理科総合B」教科書における「生物の多様性（遺伝子・種・生態系の多様性）」の扱われ方を、学習指導要領と教科書を手がかりに分析した。実験・観察や課題研究には、様々な内容が取り上げられていたこと、示されている生物は、義務教育段階と同様、種類に未だ偏りがあること、そして、遺伝子・生態系の多様性の扱いに不十分さがあることを明らかにした。したがって、「生物の多様性」の扱われ方の現状は、多様であり、過渡期であるといえる。 |
| Keywords | 生物の多様性 ( Biodiversity (Biological diversity) ) 教科書 (Textbook) 理科総合B (Integrated Science B) 生物教育 (Biological Education) |
| Publication Title | 岡山大学教育実践総合センター紀要 |
| Published Date | 2004 |
| Volume | volume4 |
| Issue | issue1 |
| Start Page | 25 |
| End Page | 34 |
| ISSN | 1346-3705 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313344 |
| JaLCDOI | 10.18926/bgeou/11166 |
|---|---|
| Title Alternative | Physics Education in the Lower Secondary Schools of Austria in Connection with Elementary Science Education |
| FullText URL | 135_0051_0064.pdf |
| Author | Tanaka, Kenji| |
| Abstract | オーストリアの前期中等教育段階における物理教育の現状を、前段階である初等教育段階の科学(理科)教育との関連性の視座に立ち、学習指導要領、教科書などから、明らかにした。オーストリアの前期中等教育段階における物理教育は、独立した教科書を設けて行われている。一方、初等教育段階における物理教育は、「事象教授」の枠内で行われているとみなせる。学習目標は両段階とも知識理解だけに限定していない点で共通しているが、その性格や範囲が異なっている。学習内容に至っては、前期中等教育段階では思考方法、社会における位置づけなども扱う一方で、初等教育段階ではほぼ力学だけであり、量的にも少なく、一貫性や関連性が図れていると言い難い。 |
| Keywords | オーストリア 前期中等教育段階 物理教育 初等教育段階 事象教授 |
| Publication Title | 岡山大学教育学部研究集録 |
| Published Date | 2007-06-25 |
| Volume | volume135 |
| Start Page | 51 |
| End Page | 64 |
| ISSN | 0471-4008 |
| language | Japanese |
| File Version | publisher |
| NAID | 40015605587 |
| Author | Takeda, Masaya| |
|---|---|
| Published Date | 2005-06-30 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | Hayashi, Nobuhiko| |
|---|---|
| Published Date | 1999-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | Yanai, Tadashi| |
|---|---|
| Published Date | 1999-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 冨永 晃| |
|---|---|
| Published Date | 1991-09-30 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 渡邉 真史| |
|---|---|
| Published Date | 1999-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 辻 修平| |
|---|---|
| Published Date | 1998-09-30 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 山川 純次| |
|---|---|
| Published Date | 1994-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | Hirota, Kiyonori| |
|---|---|
| Published Date | 1992-03-28 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 岸木 敬太| |
|---|---|
| Published Date | 1996-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 河村 直己| |
|---|---|
| Published Date | 1999-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | 岩藤 章正| |
|---|---|
| Published Date | 1994-03-25 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
| Author | Ito, Hideyuki| |
|---|---|
| Published Date | 1999-09-30 |
| Publication Title | |
| Content Type | Thesis or Dissertation |
