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排序方式: 共有106条查询结果,搜索用时 15 毫秒
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Wilfred Dolfsma 《Forum for Social Economics》2005,35(1):59-67
In recent years, economics has paid increasing attention to the phenomenon of consumption. Insights from outside of the mainstream
and from outside of economics proper have found inroads as well. Largely neglected in previous decades, consumption theory
in economics was the exclusive domain for technical discussions only for a long time, as the articles selected by the late
Kevin Lancaster show. Consumption of many goods is, however, highly symbolic—consumption behavior is in large part about institutionalized
communication where instrumental considerations do not necessarily play an important role. Some of the most promising ideas
that can be developed further in economics to better understand consumption behavior are presented. 相似文献
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In this paper, we propose a Weighted Stochastic Mesh (WSM) algorithm for approximating the value of discrete‐ and continuous‐time optimal stopping problems. In this context, we consider tractability of such problems via a useful notion of semitractability and the introduction of a tractability index for a particular numerical solution algorithm. It is shown that in the discrete‐time case the WSM algorithm leads to semitractability of the corresponding optimal stopping problem in the sense that its complexity is bounded in order by with being the dimension of the underlying Markov chain. Furthermore, we study the WSM approach in the context of continuous‐time optimal stopping problems and derive the corresponding complexity bounds. Although we cannot prove semitractability in this case, our bounds turn out to be the tightest ones among the complexity bounds known in the literature. We illustrate our theoretical findings by a numerical example. 相似文献
5.
Winston W. Chang Wilfred J. Ethier Murray C. Kemp 《Journal of International Economics》1980,10(3):377-394
This paper analyzes the implications of joint production for the four basic results of the factor-endowments theory of international trade. The nature of the relationship between commodity prices and factor rewards is first elucidated in detail. It is then shown that, in sharp contrast to prevalent opinion, there is in fact a strong presumption that the basic theorems will continue to hold in essence. The paper then considers applications and extensions of the analysis to higher dimensions. 相似文献
6.
How Central Is Too Central? Organizing Interorganizational Collaboration Networks for Breakthrough Innovation 下载免费PDF全文
John Qi Dong Killian J. McCarthy Wilfred W. M. E. Schoenmakers 《Journal of Product Innovation Management》2017,34(4):526-542
Firms increasingly look to collaboration with alliance partners in their quest for breakthrough innovation. But how does the position of a firm in its alliance network weighted by the centrality of its partners—a concept which we term “partner‐weighted alliance centrality”—and the heterogeneities in the types of partners that it cooperates with—in terms of its private‐public collaboration—influence this quest? Using longitudinal data from the U.S. pharmaceutical industry, we build alliance networks in the period 1985–2001 to investigate these questions. We show that, for breakthrough innovation, collaborating with more partners that are more central in alliance networks the better, but only to a point. Beyond that point, we find that the likelihood of achieving breakthrough innovation drops. Furthermore, and looking at the kinds of knowledge provided by the partners in each firm's alliances, we report that firms with a greater share of private partners, relative to public partners, suffer less from the diminishing benefits of collaboration with central partners when developing breakthrough innovation. Taken together, we make novel contributions about how to organize for breakthrough innovation, and provide actionable managerial advice in terms of selecting collaborative partners in alliance networks. 相似文献
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Given the goal of food cost stability, this paper proposes a consumer subsidy plan via food coupons. Graphic models of such a plan and the more conventional alternatives—price, control and consumer subsidy without use of coupons—are presented to describe how the schemes would operate and the direct effects which they might have. Simulation is then used to estimate their likely effects. Finally, the relative merits of the alternative stabilizing schemes are discussed from a policy point of view.
Ayant en vue le but de la stabilisation des couts alimentaires, cet article propose au consommateurs tin plan de subvention par coupons. Des modèles graphiques ďun tel plan el les alternatives plus tradilionnelles (c'est à dire contrôle de prix et subvention sans coupons') sont présentés afin de décrire les opérations et les effets qu'ils pourraient avoir. La simulation est employée afin de déterminer leurs consequences probables. Enfin les mérites relatifs des alternatives qui stabilize les prix sont discutés du point de vue politique. 相似文献
Ayant en vue le but de la stabilisation des couts alimentaires, cet article propose au consommateurs tin plan de subvention par coupons. Des modèles graphiques ďun tel plan el les alternatives plus tradilionnelles (c'est à dire contrôle de prix et subvention sans coupons') sont présentés afin de décrire les opérations et les effets qu'ils pourraient avoir. La simulation est employée afin de déterminer leurs consequences probables. Enfin les mérites relatifs des alternatives qui stabilize les prix sont discutés du point de vue politique. 相似文献
9.
John Schoenmakers 《Finance and Stochastics》2012,16(2):319-334
In this paper, we present a dual representation for the multiple stopping problem, hence multiple exercise options. As such, it is a natural generalization of the method in Rogers (Math. Finance 12:271–286, 2002) and Haugh and Kogan (Oper. Res. 52:258–270, 2004) for the standard stopping problem for American options. We term this representation a ‘pure martingale’ dual as it is solely expressed in terms of an infimum over martingales rather than an infimum over martingales and stopping times as in Meinshausen and Hambly (Math. Finance 14:557–583, 2004). For the multiple dual representation, we propose Monte Carlo simulation methods which require only one degree of nesting. 相似文献
10.
In this article we compare bivariate and multivariate models for homogamy of social origin and education to test whether bivariate models of homogamy lead to biased results. We use data on Hungarian couples married between 1930 and 1979 and loglinear models of scaled association. The results indicate some differences between bivariate and multivariate analyses. At each point of time bivariate models overestimate homogamy, both with respect to education and social origin. However, results on trends in time do not differ much between the two analyses. The exception is the period 1940–1959, in which bivariate analysis showed decreasing educational homogamy, and multivariate analysis showed an increasing trend. The latter finding can be explained by declining homogamy of social origin, as well as the weaker reproduction and cross-effects in this period. 相似文献