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21.
This model combines two important stylized features of volatility, the rough behavior consistent with a Hurst parameter less than , and the regime switching property consistent with more long-term economic considerations. It is nevertheless highly tractable in the sense of semianalytic formulae for European options, and permits a partial Monte Carlo method of similar computational speed as the semianalytic formula (at an appropriate number of Monte Carlo simulations). While option prices are relatively insensitive to the choice of Hurst parameter, introducing rough volatility allows for a better fit to the at-the-money skew. 相似文献
22.
This paper assesses the quantitative importance of electronic commerce in trade and tariff revenue, in light of the WTO decision on ‘duty‐free cyberspace’. Electronic commerce is likely to boost international trade in software, digitizable media products (music, books) and many services sectors significantly. However, despite the growing importance of electronic commerce for trade, tariff revenue loss from duty‐free electronic commerce is unlikely to be significant. 相似文献
23.
Ludger Linnemann 《Fiscal Studies》2010,31(2):227-250
The paper studies the effects of income tax rate changes in a general equilibrium model with frictional unemployment. Laffer curve effects, by which a tax rate reduction may increase the level of government spending or its share in output, are shown to be possible under certain conditions. These are the presence of unemployment benefit payments, government budget balance through fiscal spending adjustment and limited quantitative importance of labour reallocation costs. Endogenous government spending acts as a fiscal accelerator if the fiscal burden of unemployment benefit payments is large, but reduces the employment effects of tax rate cuts if it is low. 相似文献
24.
This study empirically examines the business cycle behaviour of public consumption and its main components, the public wage bill (including its breakdown into compensation per employee and public employment) and intermediate consumption, in the euro area aggregate, euro area countries and a group of selected non-euro area Organization for Economic Co-operation and Development (OECD) countries (Denmark, Sweden, the UK, Japan and the US). It looks across a large number of variables and methods, using annual data from 1960 to 2005. It finds robust evidence supporting that public consumption, wages and employment co-move with the business cycle in a pro-cyclical manner with 1–2 year lags, notably for the euro area aggregate and euro area countries. The findings reflect mainly the correlation between cyclical developments, but also point to an important role of pro-cyclical discretionary fiscal policies. 相似文献
25.
This paper demonstrates the prominent role of antidumping laws as an instrument of endogenous trade policy in the EC. In contrast with the U.S. where anti-dumping decisions are largely subject to technical determination and trade barriers result from protectionist rules, the EC application of antidumping laws provides protection through administrative discretion and political influence on administrators. Whereas political influence seems to have increased over time in the U.S., the results of our empirical analysis of the EC antidumping decisions in the 1980 to 1990 period indicate that it has been curbed by the increased formalization of the antidumping investigation in the EC in this period. The estimation results show, however, that the tightening impact of each of the three institutional changes during this period faded within two years. 相似文献
26.
Latin American economic development has been perceived as a puzzle. The region has trailed most other world regions over the past half century despite relatively high initial development and school attainment levels. This puzzle, however, can be resolved by considering educational achievement, a direct measure of human capital. We introduce a new, more inclusive achievement measure that comes from splicing regional achievement tests into worldwide tests. In growth regressions, the positive growth effect of educational achievement fully accounts for the poor growth performance of Latin American countries. These results are confirmed in a number of instrumental-variable specifications that exploit plausibly exogenous achievement variation stemming from historical and institutional determinants of educational achievement. Finally, a development accounting analysis finds that, once educational achievement is included, human capital can account for between half and two thirds of the income differences between Latin America and the rest of the world. 相似文献
27.
Ohne Zusammenfassung
Prof. Dr. habil. Jens Grundei
Professor für Betriebswirtschaftslehre, insb. Organisation und Personal, Fachhochschule für Oekonomie und Management (FOM),
und selbstst?ndiger Berater.
Dipl.-Vw. Ludger Becker
Leiter Corporate Organization der Bayer AG und Lehrbeauftragter an der Technischen Universit?t Berlin. Bayer AG, Corporate
Human Resources & Organization, 51368 Leverkusen 相似文献
28.
What accounts for international differences in student performance? A re-examination using PISA data 总被引:1,自引:0,他引:1
We use the PISA student-level achievement database to estimate international education production functions. Student characteristics, family backgrounds, home inputs, resources, teachers and institutions are all significantly associated with math, science and reading achievement. Our models account for more than 85% of the between-country performance variation, with roughly 25% accruing to institutional variation. Student performance is higher with external exams and budget formulation, but also with school autonomy in textbook choice, hiring teachers and within-school budget allocations. Autonomy is more positively associated with performance in systems that have external exit exams. Students perform better in privately operated schools, but private funding is not decisive. 相似文献
29.
Ludger Wößmann 《The German Economic Review》2005,6(3):331-353
Abstract. East Asian students regularly take top positions in international league tables of educational performance. Using internationally comparable student-level data, I estimate how family background and schooling policies affect student performance in five high-performing East Asian economies. Family background is a strong predictor of student performance in Korea and Singapore, while Hong Kong and Thailand achieve more equalized outcomes. There is no evidence that smaller classes improve student performance in East Asia. But other schooling policies such as school autonomy over salaries and regular homework assignments are related to higher student performance in several of the considered countries. 相似文献
30.
Ludger Wößmann 《Wirtschaftsdienst》2017,97(1):38-42
The long run prosperity of nations is directly related to the skills of their population. The relevant cognitive skills — the “knowledge capital” of a nation — can be measured well by international math and science tests. The consideration of knowledge capital can completely account for the Latin American growth puzzle and the East Asian growth miracle. Several analyses suggest that the relationship depicts a causal effect of skills. According to the evidence, an understanding of long run growth ultimately has to rest on the knowledge capital of nations. To further long run prosperity, policies should focus on education. Effective education systems align incentives with achievement through better educational practices such as external exams, school autonomy, choice and competition. 相似文献