博采异同遂混虚实——论干宝的小说理论与实践

自鲁迅《中国小说史略》问世以来,学界咸以为魏晋南北朝小说一如写新闻,并非有意创作。然细阅干宝的生平资料,细阅其《晋纪》、《搜神记序》及《搜神记》却会发现:号曰良史的干宝实爱搜神志怪;在那时就发现小说“难免失实”,划清了与历史散文的界限;其《搜神记》题材采自典籍者多荒诞失实;题材采自现实者实非写实而多虚构。干宝的创作实践了他的小说理论,已开有意为小说之先河,在中国小说史上具有里程碑式的意义。     

Self-validated Computations for the Probabilities of the Central Bivariate Chi-square Distribution and a Bivariate F Distribution. This work partially supported by National Science Foundation grant DMS-9500831

Self-validated computations using interval analysis produce results with a guaranteed error bound. This article presents methods for self-validated computation of probabilities and percentile points of the bivariate chi-square distribution and a bivariate F distribution. For the computation of critical points (c ₁,c ₂) in the equation P(Y ₁ @ c ₁, Y ₂ ≤ c ₂) = 1 ? α, the case c ₁ = c ₂ is considered. A combination of interval secant and bisection algorithms is developed for finding enclosures of the percentile points of the distribution. Results are compared to previously published tables.     

Marriage,Labor Supply,and Home Production

We develop a search model of marriage where men and women draw utility from private consumption and leisure, and from a non‐market good that is produced in the home using time resources. We condition individual decisions on wages, education, and an index of family attitudes. A match‐specific, stochastic bliss shock induces variation in matching given wages, education, and family values, and triggers renegotiation and divorce. Using BHPS (1991–2008) data, we take as given changes in wages, education, and family values by gender, and study their impact on marriage decisions and intrahousehold resource allocation. The model allows to evaluate how much of the observed gender differences in labor supply results from wages, education, and family attitudes. We find that family attitudes are a strong determinant of comparative advantages in home production of men and women, whereas education complementarities induce assortative mating through preferences.     

社会融合中的性别差异:流动人口工作搜寻时间的实证分析

文章以扩展传统的流动人口社会融合的静态研究视角,使用国家人口计生委2010年上半年流动人口动态监测调查数据,从男女农村流动人口工作搜寻时间的角度进一步比较农村流动人口融入流入地劳动力市场过程的性别差异及影响因素。文章采用持续时间模型,通过研究农村流动人口在流入地城市找工作所花费时间的影响因素,发现虽然在给定时间内,女性流动人口在流入地找到工作所花费的时间比男性要短,但女性找到高收入工作的概率要低于男性,而接受低收入工作的概率要大于男性,从而导致性别区隔的流动人口社会融入模式。     

搜索引擎辅助英语学习研究

随着计算机网络技术在教育教学领域的广泛应用，网络成为学生学习英语的重要平台。学会利用互联网搜索引擎辅助英语学习，是信息时代的学生应该掌握的学习技能之一。巧妙运用互联网搜索引擎，学生可以准确地道地运用英语、拓展英语阅读的广度和深度，甚至还可以帮助学生补上语言文化课。     

A hybrid genetic algorithm/mathematical programming approach to the multi-family flowshop scheduling problem with lot streaming

This paper presents a hybrid genetic algorithm/mathematical programming heuristic for the n-job, m-machine flowshop problems with lot streaming. The number of sublots for each job and the size of sublots are directly addressed by the heuristic and setups may be sequence-dependent. A new aspect of the problem, the interleaving of sublots from different jobs in the processing sequence, is developed and addressed. Computational results from 12 randomly generated test sets of 24 problems each are presented.     

Inside the blogosphere: A taxonomy and framing analysis of abortion weblogs

This study analyses weblog abortion-related content sampled via a search and snowball method. When weblogs located inside of established media Web sites and other weblogs are compared, they are equivalent in the use of advocacy versus objectivist frames. Media weblog posts contain a political frame more frequently than non-media weblog posts do. In terms of diversity of frame, media weblogs employ more frames in their stories. Various explanations for these findings are offered in the context of current abortion-related content patterns.     

浅析网络营销的发展趋势

网络营销是21世纪企业营销实践与现代信息通讯技术、计算机网络技术相结合的产物，它以广阔的范围和低廉的价格正在逐步占领市场的每个角落，并且成为一种重要的营销方式。中国经济及其互联网飞速发展的情况、网络新技术发展和网络最根本的互动性这三方面推动着网络营销呈现加速发展的态势。它必将成为覆盖面最大、最新的营销方式。     

Some new factor screening designs using the search linear model

Factor screening designs for searching two and three effective factors using the search linear model are discussed. The construction of such factor screening designs involved finding a fraction with small number of treatments of a 2^m factorial experiment having the property P_2t (no 2t columns are linearly dependent) for t=2 and 3. A ‘Packing Problem’ is introduced in this connection. A complete solution of the problem in one case and partial solutions for the other cases are presented. Many practically useful new designs are listed.     

Evaluation of heuristics for scheduling in a flowshop: a case study

The problem of finding the best permutation schedule for a flowshop has engaged the attention of researchers for almost four decades. In view of its NP-completeness, the problem is not amenable to the development of efficient optimizing algorithms. A number of heuristics have been proposed, most of which have been evaluated by using randomly generated problems for a single measure of performance. However, real-life problems often have more than one objective. This paper discusses a live flowshop problem that has the twin objectives of minimizing the production run-time as well as the total flowtime of jobs. Five heuristics are evaluated in this study and some interesting findings are reported.