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171.
In this paper, we examine and compare the performance of a variety of continuous‐time volatility models in their ability to capture the behavior of the VIX. The “3/2‐ model” with a diffusion structure which allows the volatility of volatility changes to be highly sensitive to the actual level of volatility is found to outperform all other popular models tested. Analytic solutions for option prices on the VIX under the 3/2‐model are developed and then used to calibrate at‐the‐money market option prices. 相似文献
172.
173.
Joanna Slater 《海外经济评论》2008,(19):27-28
【美国《华尔街日报》4月24日】赶走了之前压制它们的诸多“恶魔”,就是通货膨胀。在经过多年的强劲增长之后,新兴市场终于但有一个“捣蛋鬼”如今又卷土重来了,它就是通货膨胀。
分析师和投资者们表示,对这些国家的经济和政治局势而言,物价上涨比肆虐美国的金融危机危害更大。 相似文献
174.
Organization Design and Information-Sharing in a Research Joint Venture with Spillovers 总被引:4,自引:0,他引:4
The paper presents a non-tournament model of process innovation with spillovers in the R&D process when firms engage in Cournot competition in the product market. It is shown that careful modelling of information-sharing and coordination of research activities leads to the conclusion that a Research Joint Venture (RJV) will economize on scarce R&D resources. There is an analysis of the effects of R&D cooperation, in the form of an RJV, on the organization of R&D, i.e. the efficient number of research labs. R&D expenditure, which precedes production, results in lower unit costs. R&D is modelled as a two-stage process: in the first stage, firms incur expenditure that will generate new knowledge, while in the second stage this knowledge is employed to reduce unit costs. A distinction is made between single and complementary research paths. It is shown that the RJV will operate one lab in the case of a single research path exploiting its coordination advantage. In the case of complementary research paths the number of labs the RJV will operate crucially depends on the stage of the R&D process at which diminishing returns occur: it will operate both labs when diminishing returns occur at the first stage (creation of knowledge), while it will be indifferent as to the number of labs, one or two, when diminishing returns occur in the second stage (cost reduction). 相似文献
175.
Joanna Wolszczak-Derlacz 《International Economics and Economic Policy》2008,5(1-2):25-47
This article examines the price dispersion in the European Union (EU) over 15 years (1990–2005). An extensive overview of the literature offers inconclusive results with the half-lives of price shocks from 2.8 to 282 months. Until now, most of the empirical research has been either micro or macro based. In contrast, we conducted a complex analysis utilizing both aggregate and disaggregate price data. The macro approach is based on a Comparative Price Level index calculated as the ratio between PPPs and exchange rate. The disaggregate analysis utilizes the actual prices of almost 150 individual products sold in the 15 capital cities of the EU. We conducted sigma and beta convergence in the analysis of both datasets. There are several differences in results depending on whether the calculation was based on indices or actual prices. Additionally, the model is tested to measure the contribution of different factors in explaining the observed convergence pattern. Most of the explanatory power comes from the differences in GDP (or wages), exchange rate volatility and differences in taxes. The Euro effect when controlling for exchange rate volatility, is not significant. 相似文献
176.
177.
Joanna Szostek 《Geopolitics》2017,22(3):571-593
This article examines how the Russian state promotes and protects its preferred self-identity, using the conceptual framework of ‘strategic narrative’. Nation branding practices, including state-funded ‘mega-projects’ like the Sochi Olympics, have contributed to the narrative by characterising Russia as a welcoming, attractive destination. However, a more salient feature of Russia’s strategic narrative is intense ‘anti-Western’ and ‘anti-American’ political and media discourse, formulated to defend against rival, threatening narratives projected from other countries. Through analysis of official statements and state television content, this article demonstrates how determination to protect ‘great power’ and ‘European’ identities underlay Russia’s strategic narrative in 2014. It considers responses which the narrative has prompted, arguing that desired results in domestic reception have been achieved at the expense of unsatisfactory results internationally. Heavy-handed attacks on the identities of other states boost collective self-esteem among Russian citizens, but they fail to produce – and arguably obstruct – desired responses among foreign audiences. 相似文献
178.
There exists a large literature which shows that public education is favorable for growth because it increases the level of
human capital and at the same time it tends to produce a more even income distribution. More egalitarian societies are also
associated with less social conflicts, and individuals have a lower tendency to report themselves happy when inequality is
high. Therefore, it is important to study the reasons why the elite opposes the development of a strong public education system.
It might be that education is related to social status and a strong public education system might threaten the elite’s political
power. We show that one aspect of social status is the specialization of skilled workers in high-paid jobs and the abundance
of unskilled workers in the production of cheap “home goods” in the market, such as painting and cleaning a house, babysitting,
and/or cooking. We emphasize the role of general equilibrium price adjustments to show that depending on the level of inequality,
the elite might prefer an economy with a positive and “high” cost of education than an economy where skills are freely provided.
We show that this result goes through even if the skilled wage is not directly affected by the ratio of skilled to unskilled
workers. We also provide empirical evidence consistent with our theory. 相似文献
179.
Maurice G. Clabaugh Ph.D. Joanna R. Wallace M.B.A. 《Journal of the Academy of Marketing Science》1984,12(1-2):128-144
Many curriculums have failed to demonstrate prolonged growth in academic enrollments. This indicates the need for using the
marketing concept as a systematic approch to evaluate this problem. Marketing-Oriented Instructional Planning provides a formalized,
systematic approach to gather information for planning curriculums by career tracts. 相似文献
180.
Joanna Santa Barbara 《Journal of Business Ethics》1989,8(2-3):177-178
This paper proposes that global peace should be a professional concern because the issues are complex and require critical and creative thinking, and because professionals have status enabling them to convey information to empower others. Professionals must examine priorities in society's needs for application of their particular knowledge areas, and must each make their own unique contribution towards a more peaceful, less threatened planet.Dr. Joanna Santa Barbara is a child psychiatrist practising in Hamilton, Ontario and Assistant Professor in the Department of Psychiatry, McMaster University. She is a member of Canadian Physicians for the Prevention of Nuclear War and the Harvard Center for Psychological Studies in the Nuclear Age. She teaches an undergraduate course in Introductory Peace Studies at McMaster University.The articles by Thomas L. Perry, Gilles D. Hurteau, and Joanna Santa Barbara are the result of a three-person panel presentation and therefore appear under the same title. At the publisher's discretion, roman numerals have been included to distinguish these articles. 相似文献