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71.
West and Central Africa (WCA)’s cotton sector is experiencing rising production costs and lower yields, reversing decades of growth. Declining input use, soil fertility and inefficient chemical pest controls are contributing factors. We evaluate the potential impact of Bt cotton on WCA using a multiregion general equilibrium model and multicountry estimates of Bt-induced productivity. We find that Bt cotton raises growers’ returns, land value and welfare. Released labor from cotton is shifted to food crops hence reducing labor shortage constraints. Overall, results indicate that potential gross benefits from Bt cotton are substantial for WCA cotton sector, and that the economic costs of nonadoption are equally significant. 相似文献
72.
73.
This work describes the evolution and potential of an elective course for students who have already been exposed to the standard techniques of problem solving as presented in traditional courses. Students apply these techniques to large scale problems in directed mullidisciplinary project teams. In doing so, they are provided with a unique learning experience allowing them to serve as a resource to the community. Course projects described here include the promotion of a railing retail district; the formulation, implementation and monitoring of litter reduction strategies; the economic evaluation of using inmate labor to clean public areas; and economic comparisons of recycling strategies for used tires. 相似文献
74.
Thomas L. Carson 《Journal of Business Ethics》1994,13(2):155-156
I analyze a well-known and moving passage from John Steinbeck's novelThe Grapes of Wrath. This passage provides an excellent illustration of one of the central questions about corporate moral agency: Is corporate moral agency anything over and above the agency of individual human beings? The passage in question is a debate about whether or not the actions of a particular company are anything over and above the actions of individual human beings. 相似文献
75.
Thomas D. Boston 《The Review of Black Political Economy》1992,20(4):5-38
Prior to the sixteenth century, the Indian Ocean trading network was one of the wealthiest commercial regions in the world.
It included states of East Africa, the Arabian peninsula, the Indian subcontinent, Southeast Asia, China and Japan. By circumnavigating
Africa, Portugal was the first European nation to gain access to the region. Through the exercise of naval superiority, blockading
of strategic shipping lanes, imposition of duties and expulsion of Swahili and Muslim merchants, Portugal exercised a mercantile
monopoly which ultimately led to the region’s rapid economic decline. Using rare historical documents from Po rtugal and Africa,
this study traces the effects of Portuguese expansion on the economies of East Africa and trade in the Indian Ocean. 相似文献
76.
In this paper, we try to develop a comprehensive theory of risk management for illiquid trading instruments and exotics by examining the consequences of a quasi–static hedging strategy. In contrast to a static hedging strategy, in which an initial hedge once executed is kept in place for the life of the trade, and a dynamic hedging strategy, in which hedges are frequently adjusted over the life of the trade, a quasi–static hedging strategy utilizes hedge adjustments but tries to minimize the frequency. Almost all the examples studied in the framework introduced here take this minimization to the extreme by limiting hedge adjustments to at most one during the life of a trade. We examine the application of this approach to long–dated forwards, long–dated options and exotic options such as cliquet and barriers. The model we present for barriers is a new generation of the Derman–Ergener–Kani approach which combines the flexibility of the approach with a sizable increase in model independence. 相似文献
77.
Steve Cassidy 《Risk Management & Insurance Review》1997,1(1):112-115
Abstract: The risk management and insurance discipline faces a number of challenges. The author poses some questions which focus on those challenges. 相似文献
78.
Andrew Clare Richard Priestley & Stephen Thomas 《Journal of Business Finance & Accounting》1997,24(5):645-655
We test the robustness of the APT to two alternative estimation procedures: the Fama and MacBeth (1973) two-step methodology; and the one-step procedure due to Burmeister and McElroy (1988). We find that the APT is indeed sensitive to the chosen estimator and assumptions about the factor structure of stock returns. We believe that our findings have implications for the estimation of asset pricing models in general. 相似文献
79.
Seit einigen Jahren stellt der Europäische Gerichtshof vermehrt Regelungen der
nationalen Steuersysteme in Hinblick darauf in Frage, ob sie mit dem EG-Recht konform
gehen. Im aktuellen Fall Marks & Spencer entscheidet der Gerichtshof, ob Konzerne
Verluste ausländischer Töchter mit inländischen Gewinnen verrechnen dürfen. Welche
Wirkung hätte eine EU-weite Verlustverrechnung auf das deutsche Steueraufkommen?Prof. Dr. Clemens Fuest, 36, ist Direktor des Finanzwissenschaftlichen
Forschungsinstituts an
der Universität zu Köln und Mitglied des Wissenschaftlichen
Beirats beim Bundesministerium der
Finanzen; Thomas Hemmelgarn, 30, Dipl.-Volkswirt,
ist Mitarbeiter an demselben Institut; Fred
Ramb, 39, Dipl.-Volkswirt, ist Mitarbeiter der
Deutschen Bundesbank, Economic Research
Centre, in Frankfurt. Dieser Artikel repräsentiert
die persönliche Auffassung der Autoren und entspricht
nicht notwendigerweise der Position der
Deutschen Bundesbank oder ihrer Mitarbeiter. 相似文献
80.