20世纪30年代专科以上学校毕业生就业训导班研究

20世纪30年代前期,专科以上学校毕业生失业严重。在学生运动风起云涌之际,设立专科以上学校毕业生就业训导班,被国民政府赋予解决专科以上学校毕业生就业问题的重大使命。就业训导班声势大、力量强、目标明确,部分反映了国民政府试图纠正专科以上学校毕业生就业问题的努力。然而该班的设立因被动、临时、人数有限,且并不触及就业问题的根本,而成为国民政府安抚学生和社会情绪的又一项权宜之计。     

Equity market neutral hedge funds and the stock market: an application of score-driven copula models

In this article, we study the time-varying market neutrality of equity market neutral hedge funds. We use data from the Hedge Fund Research? Equity Market Neutral Index (HFRX EH), which represents the performance of a portfolio of individual equity market neutral hedge funds. For each day, we measure different levels of association of the Standard and Poor’s 500 (S&;P 500) index and the HFRX EH. We use non-linear dynamic conditional score models of location, scale and copula that, to the best of our knowledge, have not yet been applied in the body of literature on hedge funds. We study whether the neutrality of the HFRX EH that is evidenced in the body of literature for the period of April 1993–April 2003 also holds for the following decade, for the period of May 2003–December 2016. We estimate different average levels of association for the pre-, during- and post-periods of the US financial crisis of 2008. We find that the association of the S&;P 500 and the HFRX EH, on average, is significantly positive for the pre- and post-periods of the financial crisis, and it is significantly negative for the period during the financial crisis.     

欧盟生物多样性行动计划—实现欧盟至2010年及未来的承诺

欧盟于20世纪末制定生物多样性战略,2006年批准实施生物多样性行动计划,承诺在2010年前停止减少生物多样性、加速恢复欧盟栖息地与自然环境系统的进程、降低全球生物多样性减少的比例。本文对该行动计划对该计划目标和进展情况进行介绍和分析。     

Chaucer's Craft in Telling Philosophical Lessons in "The Manciple's Tale"

"The Manciple's Tale" is a beast fable. Chaucer is a genius both in designing creative plots and teaching philosophical lessons in this beast fable. Chaucer arranges the Manciple to tell the story and the Manciple lets the animals tell the truth. Chaucer combines two philosophical lessons and his creative plot together perfectly.     

‘Regular’ choice and the weak axiom of stochastic revealed preference

We explore the relation between two ‘rationality conditions’ for stochastic choice behavior: regularity and the weak axiom of stochastic revealed preference (WASRP). We show that WASRP implies regularity, but the converse is not true. We identify a restriction on the domain of the stochastic choice function, which suffices for regularity to imply WASRP. When the universal set of alternatives is finite, this restriction is also necessary for regularity to imply WASRP. Furthermore, we identify necessary and sufficient domain restrictions for regularity to imply WASRP, when the universal set of alternatives is finite and stochastic choice functions are all degenerate. Results in the traditional, deterministic, framework regarding the relation between Chernoff’s condition and the weak axiom of revealed preference follow as special cases. Thus, general conditions are established, under which regularity can substitute for WASRP as the axiomatic foundation for a theory of choice behavior.     

Changes in Global Trade Patterns and Women's Employment in Manufacturing, 1995–2011

This study investigates the feminization and defeminization trends in manufacturing employment in thirty countries from 1995 to 2011. Utilizing two separate methods, structural decomposition analysis (SDA) and factor content analysis (FCA), the study identifies the major industries and trade partners behind the structural shifts in trade that have induced changes in employment and thus in the rates of women’s employment. The findings highlight that, as a general trend, defeminization in manufacturing has persisted in the Global North, led by a negative trade impact in low-technology industries. In the Global South, feminization and defeminization trends are not as straightforward. Despite positive changes in women’s share of employment in medium-high- and high-technology industries, negative gender bias effects of trade changes are found particularly in high-technology industries, where occupations are notably gendered.     

Growth and Nongrowth Capital Investments and Future Performance*

Most studies on the impact of capital expenditure on future performance use the aggregate capital expenditure disclosed in the cash flow statement. In this study, however, we distinguish between growth capital investments (that increase production capacity) from nongrowth capital investments (that only maintain or reduce current capacity). For growth capital investments, we document a negative association with year-ahead performance, which becomes positive in the subsequent year. For nongrowth capital investments, we observe a non-negative association with year-ahead performance. For nongrowth capital investments, we document a positive association, suggesting that the divestment is beneficial. That is, firms are likely disposing of nonproductive assets. Our results suggest that disclosing the nature of capital investments is important to better assess the future impact of a firm's investment decisions.     

“内部治理”与“外部监管”：国有股东在民营企业并购中的双重身份

以混合所有制改革为背景,采用2005—2018年沪深A股民营上市公司数据,考察民营企业中引入国有股东参与治理对其并购过程中代理成本的影响,并分析二者之间的作用机制。结果显示：国有股东能够以外部大股东和政府监管者的双重身份,通过加强内部治理和外部监管的作用显著降低民营企业并购过程中的代理成本,其中,委派董事可以缓解第一类代理问题;股权制衡可以缓解第二类代理问题。这种作用关系在地区法制化水平、行业竞争程度和内部控制质量低的情况下更为显著。     

Probability theory in fuzzy sample spaces

This paper tries to develop a neat and comprehensive probability theory for sample spaces where the events are fuzzy subsets of The investigations are focussed on the discussion how to equip those sample spaces with suitable -algebras and metrics. In the end we can point out a unified concept of random elements in the sample spaces under consideration which is linked with compatible metrics to express random errors. The result is supported by presenting a strong law of large numbers, a central limit theorem and a Glivenko-Cantelli theorem for these kinds of random elements, formulated simultaneously w.r.t. the selected metrics. As a by-product the line of reasoning, which is followed within the paper, enables us to generalize as well as to bring together already known results and concepts from literature.Acknowledgement. The author would like to thank the participants of the 23rd Linz Seminar on Fuzzy Set Theory for the intensive discussion of the paper. Especially he is indebted to Professors Diamond and Höhle whose remarks have helped to get deeper insights into the subject. Additionally, the author is grateful to one anonymous referee for careful reading and valuable proposals which have led to an improvement of the first draft.This paper was presented at the 23rd Linz Seminar on Fuzzy Set Theory, Linz, Austria, February 5–9, 2002.     

Conditional ordering extensions

We produce a solution to the problem of extending a quasiordering conditional on a finite list of ex-ante comparisons between pairs. This constitutes yet another extension of the classical Szpilrajn’s theorem. Some examples of use of our result follow.