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題名：產量不確定與價格支持之效果
書刊名：經濟論文
作者：楊秉訓 引用關係
出版日期：1994
卷期：22:1
頁次：頁15-46
主題關鍵詞：不確定；支持；產量；價格
原始連結：連回原系統網址new window
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  • 被引用次數被引用次數:期刊(1) 博士論文(0) 專書(0) 專書論文(0)
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  • 共同引用共同引用:3
  • 點閱點閱:69
　　　　　本文分析產品價格受到產量不確定影響而波動時，一個完全競爭廠商在政府提供價格技持下的投入決策與福利水準。我們發現:若廠商為一風險趨避者，且其相對風險趨避函數值不大於一，則任何價格支持制度皆具有增產作用，也都會帶給廠商較高的福利。若生產函數為固定規模報酬，且遞增的相對風險趨避函數值大於一，則廠商反而會進行減產，不甸此時廠商仍具有較高的福利。而愈高的支持價何，其對產量與福利效果的影響幅度愈大。我自同時對實施價格支持制度下的風險增加之邊際與全額效果進行研究，在適當的假定下，得到類似於Batra & Ullah（1974）與Hartman（1975）的結果。但是當生產函數為固定規模報酬，具遞增的相對風險趨避函數值大於一時，風險增加卻可能導致廠商增加勞力與土地雇用量，進而提高產量。本文同時指出，Epstein（1978）所提一一組有關Batra & Ullah 結論的反證，其實並不能成立。
　　　　　This paper analyzes the behaviour of the competitive firm facing output price uncertainty induced by the instability of yield under conditions of price supports. We find that if the firm has less that unit relative risk aversion then the price support program will cause output and producer welfare to unambiguously increase. However, under linear homogeneous production, the competitive firm with increasing and greater than unit relative risk aversion will reduce its supply had benefit from a higher level of welfare. Sets of conditions are also derived sufficient of sign the marginal impact and the overall impact of a mean preserving spread in risk. Specifically, we show that Epstein's counterevidence of the Batra & Ullah finding is incorrect.
期刊論文
1.楊秉訓(19920600)。論價差補貼與稻穀保價收購制度。經濟論文叢刊，20(2)，109-128。new window  延伸查詢new window
2.Appelbaum, E.、Lim, C.(1982)。Monopoly versus Competition under Uncertainty。Canadian Journal of Economics，40(2)，355-363。  new window
3.Arrow, K. J.(1963)。Comment。Review of Economics and Statistics，45，24-27。  new window
4.Arrow, K. J.(1974)。The Use of Unbounded Utility Fuctions in Expected-Utility Maximization: Response。Quarterly Journal of Economics，88，136-138。  new window
5.Bardhan, P. K.、Srinivasan, T. N.(1971)。Cropsharing Tenancy in Agriculture: A Theoretical and Empirical Analysis。American Economic Review，61，48-64。  new window
6.Batra, R. N.(1974)。Resource Allocation in a General Equilibrium Model of Production under Uncertainty。Journal of Economic Theory，8，50-63。  new window
7.Batra, R. N.、Ullah, A.(1974)。Competitive Firm and the Theory of Input Demand under Price Uncertainty。Journal of Political Economy，82(2)，537-548。  new window
8.Bond, G.、Wonder, B.(1980)。Risk Attitudes Amongst Australian Farmers。Australian Journal of Agricultural Economics，24(1)，16-34。  new window
9.Chavas, Jean-Paul、Holt, M. T.(1990)。Acreage Decisions Under Risk: The Case of Com and Soybeans。American Journal of Agricultural Economics，72(3)，529-538。  new window
10.Demers, F.、Demers, M.(1990)。Price Uncertainty, the Competitive Firm and the Dual Theory of Choice under Risk。European Economic Review，34，1181-1199。  new window
11.Diamond, P. A.、Stiglitz, J. E.(1974)。Increase in Risk and in Risk Aversion。Journal of Economic Theory，8，337-360。  new window
12.Dixit, Avinash(1986)。Comparative Statics for Oligopoly。International Economic Review，27(1)，107-122。  new window
13.Epstein, L.(1978)。Production Flexibility and the Behaviour of the Competitive Firm under Price Uncertainty。Review Economics and Studies，45，251-261。  new window
14.Feder, G.(1977)。The Impact of Uncertainty in a Class of Objective Functions。Journal of Economic Theory，16，504-512。  new window
15.Fraser, R. W.(1988)。A Method for Evaluating Supply Response to Price Underwriting。American Journal of Agricultural Economics，32(1)，22-36。  new window
16.Fraser, R. W.(1992)。The Welfare Effects of Deregulating Producer Prices。American Journal of Agricultural Economic，74，21-26。  new window
17.Friend, I.、Blume, M. E.(1975)。The Demand for Risky Assets。American Economic Review，65(5)，900-922。  new window
18.Gal-Or, E.(1985)。Information Sharing in Oligopoly。Econometrica，53(2)，329-43。  new window
19.Hartman, R.(1975)。Competitive Firm and the Theory of Input Demand under Price Uncertainty: Comment。Journal of Political Economy，83(6)，1289-1290。  new window
20.Hiebert, L. D.(1981)。Production Uncertainty and Factor Demands for the Competitive Firm: An Extension。Southern Economic Journal，48(1)，211-215。  new window
21.Huang, W. Y.、Hyberg, B.、Segarra, E.(1990)。A Variable Price Support Farm Program: A Transition Tool to a Free Market。Southern Journal of Agricultural Economics，22(1)，133-143。  new window
22.Just, R. E.、Pope, R. D.(1978)。Stochastic Specification of Production Functions and Economic Implications。Journal of Econometrics，7，67-86。  new window
23.Kamien, M. I.、Schwartz, N. L.(1983)。Conjectural Variations。Canadian Journal of Economics，16(2)，191-211。  new window
24.Katz, E.(1984)。A Rule for Signing the Effect of Uncertainty in an Optimization Problem with Two Control Variables。Journal of Economic Dynamics and Control，8，65-71。  new window
25.Kraus, M.(1979)。A Comparative Statics Theorem for Choice Under Risk。Journal of Economic Theory，21，510-517。  new window
26.Macminn, R. D.、Holtmann, A. G.(1983)。Technological Uncertainty and the Theory of the Firm。Southern Economic Journal，50，120-136。  new window
27.Newbery, D. M. G.、Stiglitz, J. E.(1979)。The Theory of Commodity Price Stabilisation Rules: Welfare Impacts and Supply Responses。Economic Journal，89(356)，799-817。  new window
28.Newbery, D. M. G.、Stiglitz, J. E.(1982)。The Choice of Techniques and the Optimality of Market Equilibrium with Rational Expectations。Journal of Political Economy，90(2)，223-246。  new window
29.Newman, P.(1969)。Some Properties of Concave Functions。Journal of Economic Theory，1，291-314。  new window
30.Perry, Michael K.(1982)。Oligopoly and Consistent Conjectural Variations。Bell Journal of Economics，13(1)，197-205。  new window
31.Pope, R. D.、Just, R. E.(1991)。On Testing the Structure of Risk Preferences in Agricultural Supply Analysis。American Journal of Agricultural Economics，73，743-748。  new window
32.Pope, R. D.、Just, R. E.、Kramer, R. A.(1979)。Production Uncertainty and Factor Demands for the Competitive Firm。Southern Economic Journal，46(2)，489-501。  new window
33.Quiggin, J.(1983)。Underwriting Agricultural Commodity Prices。Australian Journal of Agricultural Economics，27(3)，200-211。  new window
34.Ratti, R. A.、Ullah, A.(1976)。Uncertainty in Production and the Competitive Firm。Southern Economic Journal，42，703-710。  new window
35.Ryan, T. M.(1974)。The Use of Unbounded Utility Functions in Expected Utility Maximization: Comment。Quarterly Journal of EQ. J. Economics，88，133-135。  new window
36.Sandmo, A.(1971)。On the Theory of the Competitive Firm under Price Uncertainty。American Economic Review，61，65-73。  new window
37.Sandmo, A.(1972)。Discount Rates for Public Invesment under Uncertainty。International Economic Review，13，287-302。  new window
圖書
1.Newbery, D. M. G.、Stiglitz, J. E.(1981)。The Theory of Commodity Price Stabilization。Oxford University Press。  new window
2.Shepherd, G. S.(1966)。Agriculture Price Analysis。Iowa State University Press。  new window
圖書論文
1.Arrow, Kenneth J.(1971)。The Theory of Risk Aversion。Essays in the Theory of Risk Bearing。Chicago：Markham Pub. Co。  new window
 
 
 
 
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