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題名 | 產量不確定與價格支持之效果 |
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作者姓名(中文) | 楊秉訓; | 書刊名 | 經濟論文 |
卷期 | 22:1 1994.03[民83.03] |
頁次 | 頁15-46 |
分類號 | 553.5 |
關鍵詞 | 不確定; 支持; 產量; 價格; |
語文 | 中文(Chinese) |
中文摘要 | 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。 |
英文摘要 | 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. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。