首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   237篇
  免费   6篇
管理学   12篇
人口学   7篇
丛书文集   9篇
理论方法论   6篇
综合类   61篇
社会学   16篇
统计学   132篇
  2022年   1篇
  2021年   1篇
  2020年   6篇
  2019年   7篇
  2018年   6篇
  2017年   10篇
  2016年   3篇
  2015年   4篇
  2014年   9篇
  2013年   42篇
  2012年   22篇
  2011年   19篇
  2010年   10篇
  2009年   6篇
  2008年   15篇
  2007年   9篇
  2006年   10篇
  2005年   9篇
  2004年   8篇
  2003年   4篇
  2002年   3篇
  2001年   3篇
  2000年   2篇
  1998年   1篇
  1997年   2篇
  1996年   1篇
  1994年   1篇
  1993年   1篇
  1992年   1篇
  1989年   1篇
  1986年   1篇
  1985年   3篇
  1984年   6篇
  1983年   3篇
  1982年   5篇
  1981年   3篇
  1979年   4篇
  1976年   1篇
排序方式: 共有243条查询结果,搜索用时 15 毫秒
11.
宋健  李灵春  胡波 《人口学刊》2022,44(1):5-15
在人口形势发生重大转折性变化的时代背景下,人口与家庭的关系更为紧密也更为复杂,但现有研究对人口与家庭发展的概念、测量和基本态势还缺乏统一的认识。文章基于转变理论和人口与家庭两个系统的协调耦合关系,利用CRITIC权重法计算指标权重、拟合指数,从多维视角出发构建人口与家庭发展指数并实证分析近30年来中国人口与家庭发展的基本态势。分析结果显示:1990年以来受计划生育政策和经济快速发展的影响,我国的人口与家庭发展呈现总体平稳的态势。人口系统中生育、健康、迁移、结构等各要素均发生了不同程度的变化,人口发展指数在20世纪90年代后趋于下降,2000年以来略有回升。同一时期,尽管我国的家庭结构指标蕴含风险,但高等教育的普及使家庭人力资本水平大幅度提高,经济发展降低了城乡家庭的恩格尔系数,这些都有助于家庭发展,家庭发展指数不断升高。人口和家庭系统的协调度和耦合度保持稳定,人口与家庭发展更多受到人口发展的影响。我国当前人口与家庭发展的短板在人口发展,需要尽力解决好生育率低、人口结构失衡、地区发展不平衡等问题。人口与家庭系统耦合度长期保持较高水平的稳定将为中国实施促进家庭发展政策奠定较好的基础,有助于促进人口长期均衡发展。  相似文献   
12.
Repeated measurements designs are widely used in medicine, pharmacology, animal sciences, and psychology. In this article, some infinite series are developed to generate the balanced repeated measurements designs for p (periods) even. For p odd, construction procedures are also described. Catalogues of the proposed designs are also presented for p = 5, 7, 9, when v ≤ 100.  相似文献   
13.
There has been much recent interest in supersaturated designs and their application in factor screening experiments. Supersaturated designs have mainly been constructed by using the E ( s 2)-optimality criterion originally proposed by Booth and Cox in 1962. However, until now E ( s 2)-optimal designs have only been established with certainty for n experimental runs when the number of factors m is a multiple of n-1 , and in adjacent cases where m = q ( n -1) + r (| r | 2, q an integer). A method of constructing E ( s 2)-optimal designs is presented which allows a reasonably complete solution to be found for various numbers of runs n including n ,=8 12, 16, 20, 24, 32, 40, 48, 64.  相似文献   
14.

This paper arises out of psychoanalytically oriented consultancy to teams of staff in the helping professions where there is a statutory 'duty to care'. It takes as its premise the seemingly paradoxical hypothesis that workers may need to split off part of their emotional experience in order to preserve their own mental health and provide reliable services to their clients. I argue that while a professional 'duty to care' requires us to be emotionally 'in touch', the demands of our clients together with the demands of the institutional response to the 'duty to care' cause us to split off parts of our awareness. I also argue that provided the splitting does not become extreme we are doing no more or less than the rest of society. In other words, there is a degree of 'normal splitting' which numbs our awareness of danger and destructiveness and seeks to protect us from too much anxiety and pain. Yet if professional workers are charged with the responsibility of assessing risk and acting accordingly for the protection of all concerned they need ways of being 'in touch' (re-integrating the splits) for some or enough of the time. Finally, I will describe ways of being 'in touch', illustrating the difficulty and the pain of re-integrating the splits and some of the insights that can arise out of this work with examples from my consultancy work.  相似文献   
15.
A-optimal and mv optimal repeated measurments designs for comparing serveral test treatments with a control are considered. the models considered are basically of two types: without preperides and the cirular model. It is shown known that some known strongly balanced uniform repeated measurements designs can be modified to obtain optimal designs for this problem. Some other methods of finding optimal designs are also given.  相似文献   
16.
《随机性模型》2013,29(1):37-74
Starting from an abstract setting which extends the property “skip free to the left” for transition matrices to a partition of the state space, we develop bounds for the mean hitting time of a Markov chain to an arbitrary subset from an arbitrary initial law. We apply our theory to the embedded Markov chains associated with the M/G/1 and the GI/M/1 queueing systems. We also illustrate its applicability with an asymptotic analysis of a non-reversible Markovian star queueing network with losses.  相似文献   
17.
A Harvey Wallbanger is an alcoholic drink composed of three ingredients: orange juice, vodka, and Galliano. One of the authors (Sahrmann), a connoisseur of the libation, was perplexed upon discovering that different bartender handbooks listed different recipes for the drink. Determined to shed some light on this irksome problem, he issued invitations for an evening workshop session (party) to former and current attendees of an experimental-design training course taught within his company. A mixture experiment was designed and data collected using the class participants. This article describes the experimental design and the analysis of the data. The results of the experiment indicate that reducing the proportion of vodka produces better-flavored drinks. The results of the experiment were not entirely conclusive, however, so recommendations are made for future experimentation.  相似文献   
18.
This note presents an extension of Q-method of analysis for binary designs given by Rao (1956) to n-ary balanced and partially balanced block designs. Here a linked n-ary block (LNB) design is defined as the dual of balanced n-ary (BN) design. Having a note on Yates’ (1939, 1940) method of P-analysis, we further extend the expressions for binary linked block (LB) designs given by Rao (1956) to linked n-ary block (LNB) designs which admit easy estimation of parameters for these type of all n-ary designs.  相似文献   
19.
Summary This paper is concerned with the designs in which each experimental unit is assigned more than once to a treatment, either different or identical. An easy method of constructing balanced minimal repeated measurements designs with unequal period sizes is presented whenever the number of periods is less than the number of treatments. Strongly balanced minimal repeated measurements designs with unequal period sizes are also constructed whenever the number of periods is less than the number of treatments.  相似文献   
20.
平衡记分卡的利弊分析与应用研究   总被引:10,自引:0,他引:10  
平衡记分卡是以信息为基础,系统考虑企业业绩驱动因素,多维度平衡评价的一种新型的企业业绩评价系统,该系统有优点但也有其不足。我国在推行平衡记分卡时,应重视信息系统的选择,测评指标的量化工作不要拘于形式等问题。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号