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581.
Marlene J. Colbourn Charles J. Colbourn 《Journal of statistical planning and inference》1984,10(1):97-103
Simple recursive constructions for cyclic block designs are given. These yield many new infinite families of cyclic Steiner 2-designs. 相似文献
582.
Michael J. Prentice 《Journal of statistical planning and inference》1982,6(3):205-214
The conventional antipodally symmetric Bingham matrix distribution on the Stiefel manifold is generalized. Large sample maximum likelihood estimation and uniformity tests are discussed, and a parametric model for axial orientations (X-shapes) is suggested. A generalization of the Khatri-Mardia matrix distribution is developed to provide a model suitable for hybrids (T-shapes). 相似文献
583.
Safe haven capital inflows and other factors have caused the Swiss franc to appreciate and posed challenges for policymakers. We find that these exchange rate changes do not affect the volume of exports from Switzerland’s most advanced sectors, pharmaceuticals and watches, but do matter for exports of medium-high-technology products such as capital goods and machinery. We also report that appreciations do not affect stock prices and goods prices for the pharmaceutical and watch industries but cause both stock and goods prices to tumble for the capital goods and machinery sectors. We draw many policy lessons from these findings for Switzerland and for the rest of the world. 相似文献
584.
Youngin Jo Seongil Jo Yung-Seop Lee Jaeyong Lee 《Journal of the Korean Statistical Society》2018,47(3):248-262
We propose a novel Bayesian nonparametric (BNP) model, which is built on a class of species sampling models, for estimating density functions of temporal data. In particular, we introduce species sampling mixture models with temporal dependence. To accommodate temporal dependence, we define dependent species sampling models by modeling random support points and weights through an autoregressive model, and then we construct the mixture models based on the collection of these dependent species sampling models. We propose an algorithm to generate posterior samples and present simulation studies to compare the performance of the proposed models with competitors that are based on Dirichlet process mixture models. We apply our method to the estimation of densities for the price of apartment in Seoul, the closing price in Korea Composite Stock Price Index (KOSPI), and climate variables (daily maximum temperature and precipitation) of around the Korean peninsula. 相似文献
585.
Tingxun Gou Hong Qin Kashinath Chatterjee 《Journal of the Korean Statistical Society》2018,47(2):216-225
Computer experiments involving quantitative factors at high levels are becoming more and more important in the study of complex experiments arising in the area of science and engineering. Uniform designs are found to be widely applicable in computer experiments in the form of space-filling designs. In this paper, the projection uniformity for quantitative designs is studied under wrap-around -discrepancy. A lower bound of uniformity pattern for general asymmetric designs is provided, which can be used to serve as a benchmark for both comparing different designs and also to determine the optimal design. As a byproduct, a lower bound of wrap-around -discrepancy measure for the asymmetric design is also obtained. Some illustrative examples and numerical comparisons are also provided for supporting our theoretical results. 相似文献
586.
Ferdinand M. Vieider Mathieu Lefebvre Ranoua Bouchouicha Thorsten Chmura Rustamdjan Hakimov Michal Krawczyk Peter Martinsson 《Journal of the European Economic Association》2015,13(3):421-452
Attitudes towards risk and uncertainty have been indicated to be highly context‐dependent, and to be sensitive to the measurement technique employed. We present data collected in controlled experiments with 2,939 subjects in 30 countries measuring risk and uncertainty attitudes through incentivized measures as well as survey questions. Our data show clearly that measures correlate not only within decision contexts or measurement methods, but also across contexts and methods. This points to the existence of one underlying “risk preference”, which influences attitudes independently of the measurement method or choice domain. We furthermore find that answers to a general and a financial survey question correlate with incentivized lottery choices in most countries. Incentivized and survey measures also correlate significantly between countries. This opens the possibility to conduct cultural comparisons on risk attitudes using survey instruments. 相似文献
587.
本文从历史学、考古学、比较语言学、种族人类学、民俗学等多方面进行研究 ,肯定哒的族源为阿尔泰山周围的呼得和东部天山以北的车师后部。 相似文献
588.
Jinyoung Kim 《Journal of population economics》2005,18(1):41-67
This paper investigates the effect of prenatal sex selection on fertility through a stochastic dynamic model with uncertainty in conception as well as in gender, where a woman makes decisions on conception and abortion with or without gender detection tests (i.e. sex-selective or sex-unselective abortion). The paper shows that, when the cost of gender detection test falls, the sex ratio at birth rises due to more selective abortions, but fertility can rise or fall with rising sex ratio. Fertility may rise (fall) if there are more (less) women giving up unselective abortions for selective abortions than women giving up childbirths without test for selective abortions. Similarly the paper shows that the sex ratio can rise or fall, when fertility decreases as the cost of children increases. I test these propositions as well as their implications against micro survey data on the pregnancy history of Korean women.Responsible editor: Junsen Zhang. 相似文献
589.
韩国的东亚金融合作战略及其对我国的启示 总被引:2,自引:0,他引:2
何喜有 《复旦学报(社会科学版)》2005,(3):40-46
文章考察了韩国参与东亚金融合作的背景和战略措施,进而分析了其参与该项合作的主要动因.文章指出,韩国致力于实施其"东北亚经济中枢国家"战略,所以其关注的区域重点是东北亚.鉴于东亚金融合作的长期性和松散性,韩国将通过培育本国健全的金融产业,确立其区域金融中心地位,同时将继续积极参与东亚区域内的各种金融协调与合作.在金融体制改革、证券市场培育及外汇储备调整等方面的举措值得我国借鉴. 相似文献
590.
《European Management Journal》2022,40(6):832-846
Mergers and acquisitions (M&A) remain a popular vehicle for organizational development to ensure future competitiveness. However, despite the extensive body of research in recent decades, significant gaps can be observed between the understanding of the phenomenon M&A in the literature and the importance of M&A activities in practice. Heterogeneous perspectives from different schools of thought, contradictory findings and controversies, and changing economic environments make M&A research a complex endeavor and highlight the need for integrative approaches and holistic perspectives. This paper takes a holistic view of M&A research to map interrelationships among key documents, authors, institutions, and countries; trace the evolution of M&A research over time; and suggest avenues for future research to expand the boundaries of M&A scholarship. For this purpose, a sample of 580 articles from 9 leading management science journals was examined bibliometrically, including 42,630 citations and 18,734 unique references for the years 1963–2019. 相似文献