result 321 件
| JaLCDOI | 10.18926/OER/41521 |
|---|---|
| FullText URL | oer_031_4_277_283.pdf |
| Author | Fujimoto, Takao| Herrero, Carmen| |
| Abstract | This note is to extend a well-known theorem due to Gale and Nikaido on the univalence of nonlinear mappings. Our approach is based on a simple elimination method of variables, and the key proposition used is the implicit function theorem. In terms of the condition on signs of principal minors, our result is more general than that of Gale and Nikaido since the sign of a minor can be positive or negative. Besides we require the sign condition only for the leading principal minors. On the other hand, the domain of mappings we can deal with has to be unbounded for all but one variable. In addition, the value of each principal minor must be in a finite range. Some remarks are given in the final section. |
| Publication Title | 岡山大学経済学会雑誌 |
| Published Date | 2000-03-10 |
| Volume | volume31 |
| Issue | issue4 |
| Start Page | 277 |
| End Page | 283 |
| ISSN | 0386-3069 |
| language | English |
| File Version | publisher |
| NAID | 110000130034 |
| JaLCDOI | 10.18926/OER/41467 |
|---|---|
| Title Alternative | Income Distribution and Tax Reforms in Aging Japan |
| FullText URL | oer_032_2_059_098.pdf |
| Author | Okamoto, Akira| |
| Abstract | This paper examines the effects of changes in the variance of income distribution on both capital accumulation and social welfare in Japan, the society with an aging population. To analyze the problem, we adopt a simulation approach for an extended life-cycle general equilibrium model of overlapping generations with continuous income distribution. The simulation results indicate that the changes in the variance affect economic variables under a progressive tax scheme but they do not under a proportional tax scheme. The results also show that social welfare greatly increases as the variance shrinks. Therefore, the recent shift in Japan, where the taxation system has tended in effect to become flat, may cause a significant damage to social welfare. |
| Publication Title | 岡山大学経済学会雑誌 |
| Published Date | 2000-09-10 |
| Volume | volume32 |
| Issue | issue2 |
| Start Page | 59 |
| End Page | 98 |
| ISSN | 0386-3069 |
| language | Japanese |
| File Version | publisher |
| NAID | 110000130063 |
| JaLCDOI | 10.18926/OER/41456 |
|---|---|
| Title Alternative | Heterogeneous Labor Endowments and Tax Reforms in Aging Japan: Progressive Taxes and Intragenerational Redistribution |
| FullText URL | oer_032_1_001_048.pdf |
| Author | Okamoto, Akira| |
| Abstract | This paper examines the effects of a progressive labor income tax scheme and a progressive consumption tax scheme on capital stock and on intragenerational wealth distribution in Japan, the society with an aging population. To analyze the problem, we adopt a simulation approach for an extended life-cycle general equilibrium model of overlapping generations. As a progressive tax is likely to mitigate the inequality of resource distribution, it is crucial to allow for the existence of heterogeneous labor. This is incorporated by assuming that each cohort has three representative individuals with equal tastes but unequal annual labor endowments, corresponding to three income classes, namely, low, middle, and high income classes. As the simulation results indicate, a progressive labor income tax shrinks the inequality in the distribution of wealth, while a progressive consumption tax furthers slightly. |
| Publication Title | 岡山大学経済学会雑誌 |
| Published Date | 2000-06-10 |
| Volume | volume32 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 48 |
| ISSN | 0386-3069 |
| language | Japanese |
| File Version | publisher |
| NAID | 110000130040 |
| Author | Nagano, Toichiro| |
|---|---|
| Published Date | 1959-11-20 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume71 |
| Issue | issue12-1 |
| Content Type | Journal Article |
| Author | Ikeda, Tamotsu| |
|---|---|
| Published Date | 1959-10-20 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume71 |
| Issue | issue11-1 |
| Content Type | Journal Article |
| Author | Ohta, Yasuyuki| |
|---|---|
| Published Date | 1959-09-20 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume71 |
| Issue | issue10-1 |
| Content Type | Journal Article |
| Author | Shigemasa, Norio| |
|---|---|
| Published Date | 1959-07-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume71 |
| Issue | issue7-2 |
| Content Type | Journal Article |
| Author | Matsuki, Shigeru| |
|---|---|
| Published Date | 1959-03-25 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume71 |
| Issue | issue4-1 |
| Content Type | Journal Article |
| Author | Kimura, Takanobu| |
|---|---|
| Published Date | 1990-10 |
| Publication Title | 岡山医学会雑誌 |
| Volume | volume102 |
| Issue | issue9-10 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/OER/40537 |
|---|---|
| Title Alternative | Regional Economic Interdependency in an Open Economy : An Introduction |
| FullText URL | oer_036_4_039_067.pdf |
| Author | Nakamura, Ryohei| |
| Abstract | In this article I present an estimation procedure for regional economic variables which determine regional economic independency or autonomy such as export and import using some statistical data. In recent years not a few regions have been experienced a dependency on Tokyo central region in many respects and also been noticed thin effects of past policies in order to vitalize regional economies. The most important point is that local government does not recognize spillover effect which is derived from implementing regional policies. For examples, some materials are imported from outside the region even if local government invests on public capital formation, or some amounts of output sales are often transferred to headquarters at Tokyo from local factories. The local government, Akasaka−cho in Okayama Prefecture, has noticed the above situation and made a research project evaluating regional spillover/spillin effect in monetary term, which means to construct small region’s IO table in an extended version. As a result, Akasaka−cho grasped the circular−flow−of−the−economy constitution of the area, and carried out the policy evaluation analysis using it and succeeded to introduce regional money circular type factory and also job−creating industry. However, the case like Akasaka−cho is a very unique. To conduct such a research it is necessary for local governments to prepare both much time and money. Thus, this paper showed the model which estimates one section of a regional economy circulation constitution from such enquiry and the existing statistical data, and the example of an actual proof in the Tsuyama City zone is shown. By doing this procedure, we can identify which industry is baasic or nonbasic or which industry is effective for spreading an economic consequence. I want to develop the estimation procedure of an expenditure side from now on, to combine with a questionnaire or hearing enquiry, and to build the means of grasping the circulation constitution of regional economy comprehensively. |
| Publication Title | 岡山大学経済学会雑誌 |
| Published Date | 2005-03-10 |
| Volume | volume36 |
| Issue | issue4 |
| Start Page | 39 |
| End Page | 67 |
| ISSN | 0386-3069 |
| Related Url | http://www.e.okayama-u.ac.jp/gakkai/ |
| language | Japanese |
| File Version | publisher |
| NAID | 120002576158 |
| JaLCDOI | 10.18926/40247 |
|---|---|
| Title Alternative | Studies on the Influences of Balneal Treatment on Female Sexual Function |
| FullText URL | pitsr_025_025_052.pdf |
| Author | Hasegawa, Yasumasa| |
| Abstract | In the present study, observations of changes on female sexual function by balneal treatment were carried out with female rats with respects to sexual cycle, histological changes in ovary and uterus, histo-chemical changes in pituitary, cholinesterase activity in brain, cholesterol levels in ovary, etc. The results obtained were as follows. 1) Significant changes of sexual cycle appeared in 47 (62%) out of the 76 rats which were treated with several kinds of artificial balneal water at the temperature of 42°C (for 5 minutes per single course of the balneal treatment, twice daily during 4 weeks). Similar changes of sexual cycle also appeared in the subjects which were treated with the same kinds of balneal water at 37°C, though having showed to be less than the changes in case of the balneal treatment at 42°C. 2) A significant tendency of regulating sexual cycle of rat to normal was demonstrated in the subjects which were treated with artificial balneal sulfer, and on the other hand, a significant tendency of disturbing the cycle was demonstrated in the sUbjects which were treated with artificial balneal acid and alkali. 3) A tendency of extending the period of dioesterus phase in sexual cycle of rat was found in the subjects which were treated with our laboratory' balneal water at 42°C for 10 minutes per single course four times daily during 10 days. In these subjects, it was also demonstrated that the period of the estrus phase tended to be prolonged. 4) Histological pictures in ovary and uterus indicated normal growth in the subjects of which the sexual cycles were normalized by balneal treatment, whereas indicated an atrophy in the subjects of which the cycles were disturbed. Significant atrophy tended to appear remarkably in the subjects which developed some irregular cycles due to the treatment with artificial balneal acid or alkali. In view point of the daily changes in these tissues, it was demonstrated that atrophic changes appeared at the 10th day after onset of the treatment with a balneal water at 42°C for 5 minutes per single course or with a balneal water at 37°C for 5 minutes, and then turned to normal pictures at the 20th day after onset of the treatment. It was also indicated that remarkable atrophic changes in ovary and uterus appeared immediately after 10 days treatment with a balneal water at 42°C for 10 minutes per single course four times daily, and then turned to show a slight hyperfunction in the ovary at the 10th day after discontinuation of this balneal treatment. 5) A certain correlation was found between cholinesterase activity in the brain of rat and counts of PAS positive cells in the anterior pituitary (on the sexual zone named by Purves, H. D and W. E. Griesbach). Both the activity and the counts decreased at the 10th day after onset of the balneal treatment at the temperature of 42°C for 5 minutes per single course twice daily, and then increased at the 20th day after onset of this treatment. It was also demonstrated that both the activity and the counts decreased significantly at the 10th day after onset of the balneal treatment at 42°C for 10 minutes per single course four times daily, and then increased remarkably at the 10th day after discontinuation of this treatment. 6) A negative correlation was demonstrated between changes of cholesterol levels in ovary and those of cholinesterase activity in brain. Both the levels and the activity increased transitorily at the 10th day after the balneal treatment at 42°C for 5 minutes per single course, and then decreased at the 20th day after onset of the treatment. It was also demonstrated that both the activity and the levels increased at the 10th day after onset of the treatment at 42°C for 10 minutes per single course four times daily, and then decreased after discontinuation of this treatment. From the results mentioned above the following deduction may be drawn: (a) Sexual function is affected apparently by balneal treatment; (b) As to the mode of action of balneal water on sexual function, it is likely that balneal water acts extensively on autonomic nervous system, followed by producing changes in sexual function. In the other words, it seems that balneal water primarily affects on upper central nervous system, i. e. diencephalo-hypophyseo-system, and secondarily produces changes in sexual gland; (c) It was also demonstrated that though a transitory depression in sexual function appeared individually in some subjects which were treated with extensive stimulative balneal water or over time of balneal treatment, but in even the same subjects hyperfunction often appeared after discontinuation of such a treatment. These evidence should be taken into consideration in case of clinical balneotherapy; (d) In view point that the balneotherapy produces changes in sexual function through acting on central nervous system, it may be suggested that balneotherapy with conventional hormon therapy could produce the most desirous effect for the treatment of fertility and insufficiency of sexual function. |
| Publication Title | 岡山大学温泉研究所報告 |
| Published Date | 1959-05 |
| Volume | volume25 |
| Start Page | 25 |
| End Page | 52 |
| ISSN | 0369-7142 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002462888 |
| Author | Pogosov, W V| Kawate, R| Mizushima, T| Machida, K| |
|---|---|
| Published Date | 2005-12 |
| Publication Title | Physical Review A |
| Volume | volume72 |
| Issue | issue6 |
| Content Type | Journal Article |
| Author | Yamashita, Yoshifumi| Sakamoto, Yoshifumi| Kamiura, Yoichi| Ishiyama, Takeshi| |
|---|---|
| Published Date | 2008-06-29 |
| Publication Title | Physica B-Condensed Matter |
| Volume | volume401 |
| Content Type | Journal Article |
| Author | Tanaka, Hideki| Nakatsuka, Takeharu| Koga, Kenichiro| |
|---|---|
| Published Date | 2004-09-15 |
| Publication Title | Journal of Chemical Physics |
| Volume | volume121 |
| Issue | issue11 |
| Content Type | Journal Article |
| Author | Funabiki, Nobuo| Isogai, Megumi| Nakanishi, Toru| Higashino, Teruo| |
|---|---|
| Published Date | 2005-11 |
| Publication Title | Networks |
| Volume | volume1 |
| Content Type | Journal Article |
| Author | Kagawa, Yukio| Sun, Yonghao| Mahmood, Zaheed| |
|---|---|
| Published Date | 1996-8 |
| Publication Title | Microwave Theory and Techniques |
| Volume | volume44 |
| Issue | issue8 |
| Content Type | Journal Article |
| Author | Wang, Zhi Liang| Wada, Osami| Toyota, Yoshitaka| Koga, Ryuji| |
|---|---|
| Published Date | 2002-5 |
| Publication Title | Electromagnetic Compatibility |
| Content Type | Journal Article |
| Author | Yi, Okyeon| |
|---|---|
| Published Date | 1998-01 |
| Publication Title | Mathematical Journal of Okayama University |
| Volume | volume40 |
| Issue | issue1 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/mjou/33679 |
| Author | Matczuk, Jerzy| |
|---|---|
| Published Date | 1988-01 |
| Publication Title | Mathematical Journal of Okayama University |
| Volume | volume30 |
| Issue | issue1 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/mjou/33554 |
| Author | Quynh, Truong Cong| Thuyet, Le Van| |
|---|---|
| Published Date | 2010-01 |
| Publication Title | Mathematical Journal of Okayama University |
| Volume | volume52 |
| Issue | issue1 |
| Content Type | Journal Article |
| JaLCDOI | 10.18926/mjou/33504 |
