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   275篇
  免费   11篇
管理学   42篇
人口学   23篇
丛书文集   1篇
理论方法论   30篇
综合类   1篇
社会学   160篇
统计学   29篇
  2023年   4篇
  2022年   2篇
  2021年   1篇
  2020年   5篇
  2019年   7篇
  2018年   12篇
  2017年   11篇
  2016年   8篇
  2015年   4篇
  2014年   8篇
  2013年   59篇
  2012年   19篇
  2011年   10篇
  2010年   11篇
  2009年   8篇
  2008年   2篇
  2007年   8篇
  2006年   12篇
  2005年   7篇
  2004年   4篇
  2003年   9篇
  2002年   7篇
  2001年   3篇
  2000年   3篇
  1999年   7篇
  1998年   4篇
  1997年   2篇
  1996年   3篇
  1995年   6篇
  1994年   6篇
  1993年   5篇
  1992年   4篇
  1991年   1篇
  1990年   1篇
  1989年   2篇
  1988年   2篇
  1987年   2篇
  1986年   1篇
  1985年   2篇
  1984年   2篇
  1983年   2篇
  1978年   2篇
  1977年   2篇
  1975年   1篇
  1974年   1篇
  1972年   1篇
  1971年   1篇
  1968年   1篇
  1964年   1篇
排序方式: 共有286条查询结果,搜索用时 750 毫秒
81.
Leo Bogart, who died October 15, 2005, in New York City, calledhimself an "applied sociologist" because he spent his careerin marketing rather than academic research. But his contributionsto knowledge filled 14 books, three of them published afterhe turned 80. His appreciation for the nuances of opinion measurementand contributions to question design would have earned him distinctionon any faculty, and so his career embodied the commercial-academicblend that has characterized the American Association for PublicOpinion Research (AAPOR). Born in Lvov, Poland, he moved with his family to New York atthe age of 2. He was a high school newspaper editor in  相似文献   
82.
Goodwin and Jasper's criticisms of various iterations of political process theory are incorrectly applied to the entire developing paradigm. Their indictment offers a rigid and narrow representation of the theory and rejects the social science enterprise of building theory altogether. At the same time, their criticisms raise important puzzles for scholars working on social movements, particularly about defining opportunities, and studying culture. I answer their criticisms of the theory, acknowledge useful questions and challenges that they offer, and conclude by suggesting an agenda for research on social movements in the future.  相似文献   
83.
84.
85.
86.
Consider a scheduling problem in which a set of tasks needs to be scheduled on m parallel processors. Each task \(T_i\) consists of a set of jobs with interjob communication demands, represented by a weighted, undirected graph \(G_i\). The processors are assumed to be interconnected by a shared communication channel, which can be used by jobs to communicate among each other while being processed in parallel. In each time step, the scheduler assigns jobs to the processors and allows any processed job to use a certain capacity of the channel in order to satisfy (parts of) its communication demands to adjacent jobs processed in the same step. The goal is to find a schedule with minimum length in which the communication demands of all jobs are satisfied. We show that this problem is NP-hard in the strong sense even if the number of processors is constant and the underlying graph is a single path or a forest with arbitrary constant maximum degree. Consequently, we design and analyze approximation algorithms with asymptotic approximation ratio \(\min \{1.8, 1.5 \frac{m}{m-1}\}+1\) if the underlying graph G, the union of the \(G_i\), is a forest. For general graphs it is \(\min \left\{ 1.8, \frac{1.5m}{m-1}\right\} \cdot \left( \text {arb}(G) + \frac{5}{3}\right) \), where \(\text {arb}(G)\) denotes the arboricity of G.  相似文献   
87.
This article seeks to develop our understanding of the agency of vulnerable groups who at first sight may not seem to have much agency in their lives. It explores the co‐constructed nature of agency in three Danish homeless shelters. Unlike earlier interview‐based studies, our research is based on naturalistic data drawn from 23 video‐recorded placement meetings. Using concepts from Goffman, we examine how versions of the neediness and worthiness of homeless people are negotiated verbally and bodily between staff and clients. We find that homeless people have to juggle two partly contradictory roles when they are given or take the roles of either a (active) citizen or a (passive) client. Clientship is actively negotiated by both parties and demonstrates the agency of homeless people: they can collaborate with (as clients) or challenge (as citizens) the staff’s attempts to formulate solutions to their troubles. We further examine how the professional ideology of client centredness affects the meeting between the two parties. However, we show that, like any discourse, client centredness has no intrinsic meaning and is played out by actors in very different ways. In work with the homeless, the discourse of client centredness is related to discourses of ‘neediness’, ‘worthiness’ and ‘value for money’ that define agency in different ways and make three different client positions available: the resolute client, the acquiescent client and the passive client.  相似文献   
88.
The automobile is essential for many older adults to fulfill their daily needs, especially since many live where they lack access to public transit or other acceptable modes of transportation. Increased self-regulation is one way older drivers continue to drive safely and maintain mobility. This research considers whether self-regulation attitudes and patterns differ by gender. Results indicate that women and men report distinct patterns of self-regulation behaviors. Age, health status, and household status also interact with gender, influencing the extent of self-regulation. The results also show that women report lower levels of confidence in their driving skills than men, although the difference varies based on whether or not a woman lives alone. Implications of these results are considered for an aging population--particularly women--that over the coming decades will be more reliant on the automobile for transportation than ever before.  相似文献   
89.
Time dependence is an important characteristic of mineral processing plant data. This paper finds that the time dependence in the recovery data for an experiment at Bougainville Copper Limited (BCL) (Napier-Munn, 1995) can be described by an autoregressive-one process. The paper investigates the optimum form of experimental design for such data. Two intuitive approaches for the design of experiments involving time-dependent data have been disproved recently. Cheng & Steinberg (1991) showed that in some circumstances systematic experiments are preferable to replicated randomized block designs, and Saunders & Eccleston (1992) showed that rather than sampling at a frequency which ensures independent data, in some circumstances sampling intervals should be as small as possible. A third issue, raised in this paper, concerns the use of standard statistical tests when the data are serially correlated. It is shown that the simple paired t -test, suitably modified for time dependence, is appropriate and easily adapted to allow for a covariate and a sequential analysis. The results are illustrated using the BCL data and are already being used to design major experiments involving another mineral process.  相似文献   
90.
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