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581.
José Leão e Silva Filho Danielle Costa Morais 《Journal of Organizational Computing & Electronic Commerce》2013,23(3):190-208
ABSTRACTNegotiation Support Systems are used to exchange offers and to improve the negotiation process. Some methods are based on perspectives like heuristics in order to bring the negotiation protocol gradually closer to reality. These approaches can be important in real negotiation as they can help to improve skillsespecially in distributive bargaining. This paper proposes a Negotiation Support framework to provide the negotiator with recommendations on making decisions in a negotiation process. To input this idea into negotiation protocols, this paper suggests that some concepts based on OWA (Ordered Weighted Averaging) and some of its metrics (Orness, Dispersion) be included in the heuristics of a structured negotiation schedule. It is expected that the support provided will aid the negotiator to make decisions during the negotiation process, to learn from the elicitation and his own behavior the results obtained can help the negotiator improving his skills in the negotiation process. 相似文献
582.
This study aims to verify if the Petrobras options market is efficient in its weak form. For this purpose, this work tries to make profits on a systematic basis through delta-gamma neutral strategies using the firm’s stocks and options. In order to simulate the strategy as it would be used in the real world, we built order books every five minutes considering all buy and sell orders sent for both the underlying asset and its options. We apply the strategy when we observe distortions between implied volatilities extracted from the options. The results show evidence that the Petrobras options market is not efficient, since in 371 day-trade transactions (with an average investment of R$81,000 and an average holding time of one hour and thirteen minutes), 85% of the options strategies were profitable and the average return was 0.49%, which corresponds to more than 1600% of the highest interbank interest rate for the period. 相似文献
583.
Achille Basile Anna De Simone Maria Gabriella Graziano 《Decisions in Economics and Finance》1996,19(1-2):187-203
For an exchange economy with finitely many agents and a commodity space which is infinite dimensional, it is proved that competitive
equilibria are the same as allocations belonging to the fuzzy core of the economy. The latter is further characterized as
a subset of the ordinary core of a suitably associated continuum economy.
Riassunto Per un'economia di puro scambio con un numero finito di agenti e uno spazio dei beni di dimensione non necessariamente finita, si prova che gli equilibri Walrasiani possono essere caratterizzati come allocazioni che appartengono al nucleo fuzzy dell'economia. Inoltre, queste ultime allocazioni sono in corrispondenza biunivoca con allocazioni di tipo semplice che si trovano nel nucleo ordinario di un'opportuna economia che ha [0,1] come spazio rappresentativo dello spazio degli agenti.相似文献
584.
585.
The present study investigates the stock characteristic preferences of institutional Australian equity managers. In aggregate we find that active managers exhibit preferences for stocks exhibiting high‐price variance, large market capitalization, low transaction costs, value‐oriented characteristics, greater levels of analyst coverage and lower variability in analyst earnings forecasts. We observe stronger preferences for higher volatility, value stocks and wider analyst coverage among smaller stocks. We also find that smaller investment managers prefer securities with higher market capitalization and analyst coverage (including low variation in the forecasts of these analysts). We also document that industry effects play an important role in portfolio construction. 相似文献
586.
Intra-Industry Trade Expansion and Employment Reallocation between Sectors and Occupations 总被引:1,自引:0,他引:1
This paper re-examines the relationship between trade and labour market adjustment costs by explicitly considering the effects
of occupational mobility. We investigate the hypothesis that intra-industry trade expansion entails lower adjustment costs
than inter-industry trade expansion—the so-called Smooth Adjustment Hypothesis (SAH). This paper makes two new contributions.
First, the introduction of a new adjustment variable that considers reallocation between sectors and occupations. Second,
a test of the SAH using panel data with relevant trade and non-trade control variables, which overcomes some of the methodological
limitations of former studies. The results suggest a confirmation of the SAH and stress the importance of considering the
effects of worker moves between occupations in the study of trade-induced adjustment.
JEL no. F12, F16, J62 相似文献
587.
ABSTRACTA plethora of approaches to assess the ability of companies to interoperate can be found in the literature. Nevertheless, most of the current assessment approaches are following manual-conducted processes, which can be laborious, time-consuming and costly. Therefore, this paper aims at developing a knowledge-based system for supporting an interoperability assessment process using an ontology as its knowledge model. The resulting system allows identifying potential interoperability problems and related solutions based on the knowledge model including information of the assessed enterprise(s). A real business case is presented for evaluating the proposed approach. 相似文献
588.
Howard Van Auken Paul Stephens Fred L. Fry Jaime Silva 《The International Entrepreneurship and Management Journal》2006,2(3):325-336
Most research and popular writing includes entrepreneurial role models as an important factor in the decision to start a business. Few, if any, studies compare the influence of business owner role models between two different countries. Further, studies cite the importance of role models for potential entrepreneurs but ignore how the role model process actually works. This study looks at activities that role models might engage in and compares their influence on respondents in the US and Mexico. This is the first study that examines differences in role model influence between two countries. Ten of the variables are significantly different between respondents in the two countries. Nine of the differences were rated as being significantly more influential among Mexican students than US students while only one variable was rated as being significantly less influential. Results of the study, especially as related to the specific influence of role models on career intentions, may be relevant in designing entrepreneurship programs. The results may also be appropriate in courses that discuss entrepreneurship in different countries (e.g., international entrepreneurship). The results may also be relevant in family businesses where eventual continuity of family ownership through succession is desired. 相似文献
589.
The pattern of price dispersion significantly varies over time and across locations. Using a detailed dataset with product-level retail prices, we examine the role of time-varying factors in shaping the time variation of price dispersion. We find that price dispersion variation in an integrated region is mainly driven by oil prices, while the variation in a segmented region is attributed to dispersion in real income. We also find that dispersion in value-added tax rates explains a significant portion of price dispersion fluctuations in both geographic dimensions. This paper offers new evindence on the trade-off that exists for the role of time-varying factors as contributors to price dispersion variation by highlighting their relative importance across different dimensions of economic geography. 相似文献
590.
An international mechanism intended to curb global carbon dioxide emissions, mirrored after the Kyoto Protocol, is composed
of decentralized regulatory and enforcement authorities and two supranational agencies that are in charge of promoting international
transfers and imposing punitive fines. Regulatory enforcement is costly and imperfect. Polluting firms located in various
sovereign nations may not comply with emission regulations. We show that there is a combination of decentralized emission
quotas and centralized income transfers and fines, with decentralized leadership in policy making, which induces regional
regulatory authorities to internalize all environmental and pecuniary externalities.
相似文献