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31.
This study examines the factors governing the decision to locate new research and development facilities at locations distant from company headquarters. The 20 firms surveyed are German, Swiss, Dutch, Japanese and Finnish multinationals. Development laboratories, it was found, followed the established pattern of being located away from headquarters only when distant markets attain a critical size. For research laboratories, however, the decisive factor in all cases is a desire to tap into the expertise developing in 'centres of competence' such as the American Northeast in biotechnology. This factor only operates when the new technology is otherwise unfamiliar to the investing company. This factor overrides the conventional wish to minimize the costs of internal and external communications. 相似文献
32.
In this paper, we reexamine and extend the stochastic volatility model of Stein and Stein (S & S) (1991) where volatility follows a mean-reverting Ornstein–Uhlenbeck process. Using Fourier inversion techniques we are able to allow for correlation between instantaneous volatilities and the underlyingstock returns. A closed-form pricing solution for European options is derived and some numerical examples are given. In addition, we discuss the boundary behaviour of the instantaneous volatility at v(t)=0 and show that S & S do not work with an absolute value process of volatility. 相似文献
33.
This paper contributes to the recent debate on trade in tasks, drawing on insights from the theory of the firm as well as recent developments in trade theory. Recent empirical literature suggests that between 20 and 30 per cent of all jobs in key OECD countries could be digitised and offshored. This study offers a cluster analysis which documents that offshorable and non‐offshorable tasks tend to be performed together across occupations. Therefore, when assessing the offshorability of a job, one needs to take into account all tasks being performed by the worker and the gains from fragmenting jobs versus the benefits of multi‐tasked workers (taylorism versus toyotism). Furthermore, one needs to distinguish between fragmentation of production and fragmentation of jobs. 相似文献
34.
Major DAC donors are widely criticized for weak targeting of aid, selfish aid motives, and insufficient coordination. The emergence of an increasing number of new donors may further complicate the coordination of international aid efforts. At the same time, it is open to question whether new donors (many of which were aid recipients until recently) are more altruistic and provide better targeted aid according to need and merit. Project-level data on aid by new donors, as collected by the AidData initiative, allow for empirical analyses comparing the allocation behavior of new versus old donors. We employ Probit and Tobit models and test for significant differences in the distribution of aid by new and old donors across recipient countries. We find that, on average, new donors care less for recipient need than old donors. New and old donors behave similarly in several respects, however. They disregard merit by not taking the level of corruption in recipient countries into account. Concerns that commercial self-interest distorts the allocation of aid seem to be overblown for both groups. 相似文献
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Based on the idea of averaging a new stochastic approximation algorithm has been proposed by Bather (1989), which shows a
preferable performance for small to moderate sample sizes. In the present paper an almost sure representation is established
for this procedure, which gives the optimal rate of convergence with minimal asymptotic variance.
Work partly supported by the research grant Ku719/2-1 of the Deutsche Forschungsgemeinschaft 相似文献
38.
39.
Rainer Erbe 《Intereconomics》1984,19(1):16-23
Since the summer of 1982 the banking community has been faced with an international debt crisis of unprecedented dimensions. The debt rescheduling agreements that have been negotiated since then involve sums totalling no less than $ 100 billion. However, they give the international financial system no more than a breathing-space. The following two articles deal with different aspects of this crisis. Rainer Erbe examines the question as to what growth effects were associated with external borrowing. Can a lack of growth effects be made responsible for the crisis or were other factors more important? This is followed by an article by Anton Konrad who discusses the proposals which have been made for long-term crisis management. What are their chances of success? 相似文献
40.
Rainer Winkelmann 《Empirical Economics》1996,21(4):575-587
A new approach for modeling under-reported Poisson counts is developed. The parameters of the model are estimated by Markov Chain Monte Carlo simulation. An application to workers absenteeism data from the German Socio-Economic Panel illustrates the fruitfulness of the approach. Worker absenteeism and the level of pay are unrelated, but absence rates increase with firm size. 相似文献