Expected sample moments of concomitants of selected order statistics

In this paper, the task of determining expected values of sample moments, where the sample members have been selected based on noisy information, is considered. This task is a recurring problem in the theory of evolution strategies. Exact expressions for expected values of sums of products of concomitants of selected order statistics are derived. Then, using Edgeworth and Cornish-Fisher approximations, explicit results that depend on coefficients that can be determined numerically are obtained. While the results are exact only for normal populations, it is shown experimentally that including skewness and kurtosis in the calculations can yield greatly improved results for other distributions.     

党的建设的一项根本建设

党的十六届四中全会通过的《中共中央关于加强党的执政能力建设的决定》,科学地总结了中国共产党执政半个多世纪以来的主要经验,在党的建设史上具有里程碑意义。该《决定》中有两个重要的论断,即“无产阶级夺取政权不容易,执掌好政权尤其是长期执掌好政权更不容易”和“党的执政地位不是与生俱来的,也不是一劳永逸的”,指出了加强党的执政能力建设的重要性和紧迫性。加强党的执政能力建设必须建立一个好的党中央领导核心,坚持理论的与时俱进和在意识形态领域的指导地位,制定一条正确的基本路线并贯彻执行,全面提高各级领导干部的素质和水平,保持党同人民群众的血肉联系。通过加强执政能力建设带动党的各方面建设,带动国家政权建设,进而带动整个社会主义现代化建设。     

文化产业数字化内生生长与外生协同创新的进化机理研究

数字经济与国家文化新基建的发展驱动了以数字文化体验为代表的文化消费新范式,因而产生了革新文化消费渠道和场景、创新智能文化装备制造、打通异构文化数据资源库、完善数字化公共文化服务等亟待解决的产业发展新需求。文化产业数字化内生生长要求立足产业内部视角,打造文化产业供给侧改革、文化智能装备制造、文化创作开发、文化数字化治理、文化创客协同等五大引擎。文化产业的外生协同需在文化消费营销创新、文化大数据平台建设和产业融合发展等多点发力,要开展跨界、跨学科、跨组织的循环互动,构建文化产业数字化内外双循环驱动的创新机制,灵活应对数字化时代的新挑战。     

牛心朴子草化学成分研究

从牛心朴子草中分得五个物质,据理化常数、波谱分析与文献对照鉴定为①二十六烷酸②三十烷酸③表赤杨醇④β－各甾醇⑤牡丹酚。其中①从牛心朴子草提取分离得到是首次报导。     

关于“高斯定理”的疑问

本文旨在澄清有关电磁学中“高斯定理”的诸多疑问,并指出它与高等数学中的“高斯定理”的区别。     

Going to Pieces: Paul Monette and the Fragments of the Tribe

Author of the highly acclaimed Borrowed Time: An AIDS Memoir (1988) and winner of the 1992 National Book Award for his autobiography Becoming a Man: Half a Life Story, Paul Monette died of complications from AIDS in Los Angeles on February 12, 1995. His most recent work, Last Watch of the Night: Essays Too Personal and Otherwise (1994), is his third volume in a trilogy of autobiographical writing on growing up gay, coming-out, and living with AIDS. A graduate of Phillips Academy and Yale University, Monette received a number of awards for his writing and his work as an outspoken voice in the battle against AIDS, including the National Book Award, three Lambda Literary awards, the PEN Center West Freedom to Write Award, and three honorary doctorate degrees, from Wesleyan University, the City University of New York, and the State University of New York at Oswego. A memorial service was held for Monette on Sunday, February 19, 1995, at the Directors Guild of America on Sunset Boulevard in Los Angeles. Paul Monette was 49.     

Sensitivity of the Optimum to Perturbations of the Profit or Weight of an Item in the Binary Knapsack Problem

In the binary single constraint Knapsack Problem, denoted KP, we are given a knapsack of fixed capacity c and a set of n items. Each item j, j = 1,...,n, has an associated size or weight w_j and a profit p_j. The goal is to determine whether or not item j, j = 1,...,n, should be included in the knapsack. The objective is to maximize the total profit without exceeding the capacity c of the knapsack. In this paper, we study the sensitivity of the optimum of the KP to perturbations of either the profit or the weight of an item. We give approximate and exact interval limits for both cases (profit and weight) and propose several polynomial time algorithms able to reach these interval limits. The performance of the proposed algorithms are evaluated on a large number of problem instances.     

Buchbesprechungen

Ohne Zusammenfassung     

Dual Career Couples als eine Variante von Work-Life-Integration

Dual Career Couples as a form of work-life-integrationThe author discusses the situation of dual career couples, when both are university graduates following an own career. Basing on a respective publication she delineates the current, mostly American research and reports on several German research projects, which endeavour to analyse the relation between gender and inequality in dual career couples.     

Von der Supervision zur Mediation und zurück

From supervision to mediation and vice versaMediation in organizations becomes more and more important because of increasing conflicts. The question is, which competencies of the counsellor are necessary, and above all, whether mediation is a particular method. The author explains the method of mediation and illustrates his concept of “patchwork-mediation”. This procedure allows to build a bridge between supervision and mediation.