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排序方式: 共有375条查询结果,搜索用时 15 毫秒
31.
Joseph K. W. Fung 《期货市场杂志》2007,27(6):555-574
This study examines the information conveyed by options and examines their implied volatility at the time of the 1997 Hong Kong stock market crash. The author determines the efficiency of implied volatility as a predictor of future volatility by comparing it to other leading indicator candidates. These include volume and open interest of index options and futures, as well as the arbitrage basis of index futures. Using monthly, nonoverlapping data, the study reveals that implied volatility is superior to those variables in forecasting future realized volatility. The study also demonstrates that a simple signal extraction model could have produced useful warning signals prior to periods of extreme volatility. These results indicate that the options market is highly efficient informationally. © 2007 Wiley Periodicals, Inc. Jrl Fut Mark 27:555–574, 2007 相似文献
32.
This paper addresses the question of how technology assessment (TA) can be best integrated in the managment of R&D both at the laboratory and the policy level. The main objective is to present a conceptual framework to situate and evaluate the actual and possible TA infrastructure in Europe. The paper consists of three distinct sections. In section one, the concept and practice of TA are briefly introduced with an emphasis on their actual institutionalizations in Europe. Section two presents a conceptual framework of R&D managment at four levels: the R&D environment, the R&D institution, the R&D process, and the R&D project. The relationship between TA and R&D management is explored for each of the four levels. Finally, in section three the concept of and motives for TA integrated within the laboratory work of scientists and engineers are presented. The basic argument of this paper is that by promoting the integration of TA in R&D managment practices, a significant contribution can be made to (1) increasing the cost-efficiency of research and (2) increase the social responsiblity of scientists. The authors therefore draw up a conceptual framework for the development of R&D-integrated TA practices called Integrated Technology Assessment (ITA). 相似文献
33.
K.C. Fung 《Global Economic Review》2015,44(4):376-386
AbstractIn this paper, I examine the economic links first between the European Union (EU) and China and then I focus on the economic relationships between Germany and China. The links I will consider include international trade and direct investment. Lastly I highlight some elements of the so-called “German Model” or the “Berlin Way” and examine if they can be of policy relevance to China. There are four main results: first, EU-China trade and investment relationships are strong, deepening rapidly but they are somewhat unbalanced and asymmetric. Second, the economic relationships between Europe and China are focused on manufacturing. Third, the EU-China relationships are primarily Deutschland-centric. Lastly, elements of the “German Model” such as Mitbestimmung, Mittelstand and the German apprenticeship system can have important structural and policy implications as China continues to grow and experiment with reforms aiming at combining stability, harmony and competitiveness. 相似文献
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35.
This paper studies the relationship between firm size and technical efficiency of manufacturing enterprises in Shanghai's manufacturing sector from 1989 to 1992. Although our empirical results show that technical efficiency is increasing in the firm size, the group of the smallest enterprises (0–99 workers) have very high technical efficiency. The group of enterprises with size of 100–249.9 workers have the lowest technical efficiency while the largest size (1000 workers or above) group usually have the highest technical efficiency. Finally, technical efficiency computed from net industrial product has large upward biases compared with that computed from gross industrial product. 相似文献
36.
Esther Ling-Yee Li Ben Shaw-Ching Liu Sherriff T. K. Luk 《Journal of Global Marketing》2017,30(5):322-341
ABSTRACTIn light of the changing roles of customers from service co-producer to value co-creator, the customer participation literature has conceptualized two types of participation behavior: co-production and value co-creation. However, there is a dearth of knowledge concerning both the antecedents of customer co-creation behavior and the outcomes of such behavior in relation to customer-perceived value and loyalty. Anchored in the trust-commitment theory, the present research (a) examines the effect of how a customer's trust in the service personnel could affect his/her cooperative behavior over the service design and delivery processes; and (b) investigates how the potential impact of a customer's trust in service personnel on his/her co-design and co-delivery behavior could be made contingent upon the customer's trust in the service brand and the types of high- versus low-customer-contact service contexts. Filling the aforementioned research gaps, the present research contributes to advance our knowledge of the roles played by trust at different levels of analysis in facilitating customer participation behavior and improving our appreciation of the customer contact service contexts when designing the service organization for maximizing service value and sustaining brand loyalty over time. 相似文献
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38.
Raushan Bokusheva Lukáš Čechura Subal C. Kumbhakar 《Journal of Agricultural Economics》2023,74(2):450-472
We develop an estimation procedure that generates consistent estimates of the technology parameters, long-run (persistent) and short-run (transient) technical inefficiencies and the marginal effects of their determinants for the stochastic frontier model developed by Colombi et al. (2014, Journal of Productivity Analysis 42, 123) and Kumbhakar et al. (2014, Journal of Productivity Analysis 41, 321). Our approach accounts for three sources of potential endogeneity: (i) unobserved heterogeneity; (ii) simultaneity of input use with both types of technical efficiency; (iii) potential correlation of the noise term with the regressors. Using this approach we examine the effect of direct payments and farm size on the persistent and transient technical efficiency of French crop farms before and after the European Union's Common Agricultural Policy decoupling reform of 2003. Our results show that subsidy payments per hectare of utilised agricultural land had a significant positive effect on persistent technical efficiency and a significant negative effect on transient technical efficiency during the period before decoupling. For the period after the reform, the effect of subsidies is found to be significantly negative for persistent technical efficiency and insignificant for transient technical efficiency. The overall effect of subsidies on technical efficiency is found to be negative in both periods, albeit substantially lower in the period after decoupling. The effect of farm size on technical efficiency is found to be significant only for the period prior to the reform: it reduced persistent technical inefficiency but increased transient technical inefficiency during that period. 相似文献
39.
Michael Fung Ka Yiu Clement Chow Kong Wing Ken Wan Kai Hong 《Asia Pacific Journal of Management》1999,16(3):351-367
This paper studies the relationship between accounting profits and technical efficiency of manufacturing enterprises in Shanghai during the period 1989–1992 and examines which factors affect the profitability of manufacturing enterprises. We first estimate the average technical efficiency of four major manufacturing industries in Shanghai. Then, we test for the presence of ownership effects of technical efficiency on profits of those enterprises in these four industries. 相似文献
40.
Susan H.C. Tai Agnes M.C. Fung 《International Review of Retail, Distribution & Consumer Research》2013,23(4):311-337
Although the influence of the environment on behaviour has long been acknowledged by many environmental psychologists, not many studies have been done in a retailing context, and so far no study can provide a framework to determine how environmental cues might impact on store patronage. The main objective of this study is to explore the relationship between environment and human behaviour in a retailing context by adopting the Mehrabian Russell Model (M-R Model) so as to test the predictability and applicability of the model through measurement of the information load, the emotional states induced and the approach-avoidance behaviour of shoppers in two types of CD stores in Hong Kong. The findings show that in-store environment stimuli (expressed in terms of information rate) are positively related to the level of pleasure experienced in the store. In turn, environment-induced emotional states in the store are positively related to in-store shopping behaviour. Therefore, shopping behaviour favourable to retailers can be induced through manipulation of the store's atmospheric elements. The findings show that the in-store environment is dynamic in nature and the model is not as simple as that predicted by Mehrabian and Russell in a one-way direction. In-store behaviour also has positive effects on the pleasure felt in the store and the in-store rating of environmental stimuli. 相似文献