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111.
112.
113.
Lars Tyge Nielsen 《Economic Theory》1999,14(2):285-296
Summary. Differentiability is a convenient property of von Neumann-Morgenstern utility functions which is almost always imposed but
has not been translated into behavioral terms. In applications, expected utility is usually maximized subject to a constraint,
and the maximization is carried out by differentiating the utility function. This paper presents two sets of necessary and
sufficient conditions for a risk averse von Neumann-Morgenstern utility function to be differentiable. The first of them is
formulated in terms of the equivalent risk premia of small gambles. It says, in brief, that the equivalent risk premium is
of a smaller order of magnitude than the risk itself, as measured by the expectation of the absolute value of the risk. The
second set of necessary and sufficient conditions is formulated in terms of the probability premium of small lotteries. It
says, essentially, that the probability premium for small binary lotteries goes to zero as the size of the lottery goes to
zero.
Received: May 11, 1997; revised version: May 14, 1998 相似文献
114.
We study the regulation of brokerage in wholesale markets in premodern Central Western Europe. Examining 1,804 sets of rules from 82 cities, we find brokerage was primarily a centralized matchmaking mechanism. Brokerage was more common in towns with larger populations, better access to sea ports and trade routes, and greater political autonomy. Brokers' fee structures varied systematically: price-based fees were more common for highly heterogeneous goods, quantity-based fees for more homogeneous goods. We show theoretically that this was broadly consistent with total surplus maximization, and that brokerage was more valuable in markets with unequal numbers of buyers and sellers. 相似文献
115.
Lars Hultkrantz 《Environmental and Resource Economics》1991,1(4):373-384
A model for the determination of the price of forest land is estimated for Sweden from 1965–1987, when (except for a few years) private non-industrial forest owners could finance their holdings at a negative real after-tax borrowing rate. It is assumed that credit has been limited by the value of mortgage security, assessed independently of the price settlement. The estimated coefficients of the regression equation are used for a calculation of the average real rate of discount of forest owners and the average value of amenities. The model also evaluates the effect of the temporary land price regulation from 1979–1987. 相似文献
116.
The policy of choice to fight tax non-compliance is an increase in deterrence, i.e. fines and audits, which seems to be well-grounded
theoretically as the economics of crime justifies such an increase of the expected costs of illegal activities. In this paper,
the impact of subjectively perceived deterrence on undeclared work is analyzed for the German case. Germany is particularly
interesting because it considerably increased deterrence to fight tax non-compliance recently. The data set used for this
analysis contains several waves of survey data conducted between 2004 and 2008. According to our evidence, (subjectively perceived)
deterrence has an impact on undeclared work, but the influence of social norms is similarly important. 相似文献
117.
Using a large running race in Sweden, this study shows that there are male-dominated environments in which the selection of women who participate are more likely to be confident/competitive and that, within this group, performance improves equally for both genders in absolute terms. 相似文献
118.
A buyer’s technical knowledge may increase the efficiency of its supplier. Suppliers, however, frequently maintain relationships
with additional buyers. Knowledge disclosure then bears the risk of benefiting one’s own rival due to opportunistic knowledge
transmission through the common supplier. We show that in one-shot relationships no knowledge disclosure takes place because
the supplier has an incentive to transmit and, anticipating that, buyers refuse to disclose any of their knowledge. In repeated
relationships knowledge disclosure is stabilized by larger technological proximity between buyers and suppliers and destabilized
by the absolute value of the knowledge.
相似文献
119.
Jarl Bengtsson 《Futures》1991,23(10):1085-1106
In addressing the complex issues of the relationship between new technologies and human resources, different methodological approaches can be applied. A rich source of studies exists at the micro level, ie enterprises and/or sectors which focus, in particular, on the qualitative changes taking place. Fewer studies exist on the macro level for this subject, given its complexity and lack of adequate data. This article addresses the issues from both perspectives, but findings from the micro perspective predominate. It is structured around developments and changes on the demand and supply side and their interaction. The final section identifies some principal policy issues for governments as they relate both to demand and supply measures, as well as the need to strengthen the database for a better understanding of the issues involved. It draws heavily on recent and ongoing work on the subject carried out within OECD/Center for Educational Research and Innovation (CERI). 相似文献
120.
A detailed analysis of the Least Squares Monte-Carlo (LSM) approach to American option valuation suggested in Longstaff and Schwartz (2001) is performed. We compare the specification of the cross-sectional regressions with Laguerre polynomials used in Longstaff and Schwartz (2001) with alternative specifications and show that some of these have numerically better properties. Furthermore, each of these specifications leads to a trade-off between the time used to calculate a price and the precision of that price. Comparing the method-specific trade-offs reveals that a modified specification using ordinary monomials is preferred over the specification based on Laguerre polynomials. Next, we generalize the pricing problem by considering options on multiple assets and we show that the LSM method can be implemented easily for dimensions as high as ten or more. Furthermore, we show that the LSM method is computationally more efficient than existing numerical methods. In particular, when the number of assets is high, say five, Finite Difference methods are infeasible, and we show that our modified LSM method is superior to the Binomial Model. 相似文献