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   1501篇
  免费   55篇
管理学   185篇
民族学   20篇
人口学   132篇
丛书文集   12篇
理论方法论   136篇
现状及发展   1篇
综合类   12篇
社会学   847篇
统计学   211篇
  2023年   12篇
  2022年   8篇
  2021年   20篇
  2020年   34篇
  2019年   40篇
  2018年   54篇
  2017年   54篇
  2016年   47篇
  2015年   39篇
  2014年   40篇
  2013年   299篇
  2012年   56篇
  2011年   65篇
  2010年   41篇
  2009年   39篇
  2008年   62篇
  2007年   40篇
  2006年   41篇
  2005年   35篇
  2004年   31篇
  2003年   29篇
  2002年   41篇
  2001年   32篇
  2000年   28篇
  1999年   25篇
  1998年   20篇
  1997年   12篇
  1996年   21篇
  1995年   24篇
  1994年   18篇
  1993年   9篇
  1992年   12篇
  1991年   17篇
  1990年   17篇
  1989年   13篇
  1988年   11篇
  1987年   12篇
  1986年   8篇
  1985年   19篇
  1984年   11篇
  1983年   12篇
  1982年   15篇
  1981年   14篇
  1980年   10篇
  1979年   9篇
  1978年   8篇
  1976年   11篇
  1975年   7篇
  1974年   5篇
  1972年   5篇
排序方式: 共有1556条查询结果,搜索用时 78 毫秒
81.
The importance of random number generators has increased over the years. This follows from the fact that contemporary research methods rely more and more on simulation and the increased importance of encryption technology. The output of a random number generator is created by either an algorithm or a physical device. The most popular method for random number generation is through the use of an algorithm. This article presents a new category of physical random bit generator that is packaged by several manufacturers. A statistical analysis of the output from the generators is given.  相似文献   
82.
While teen homelessness, like all homelessness, is increasing, there have been few solid estimates of the actual number of teens effected. A twofold methodology to count homeless teens was used in the Seacoast region of New Hampshire and Maine. Social service agencies were contacted to obtain a count of homeless adolescents, and over 3000 high school age teens were surveyed in the seacoast ofNew Hampshire and southwestern Maine to identify how many were homeless. By using different definitions of homelessness, it was found that a minimum of 5% of all teens in high school reported that they had been homeless sometime during the past year. When using a broadened definition of homelessness, it was found that 20% of the teens regularly stayed with others. However, this experience was not identified by social service providers, who reported that teen homelessness simply was not a problem in their communities. In order to more accurately describe the phenomenon experienced by teens, it is proposed that the term “homelessness” should be replaced with a more inclusive word, such as “housing distress.”  相似文献   
83.
This study compares the efficacy of experimental, competency-based methods of teaching the interpersonal skills of empathic communication, respect, and genuineness with traditional didactic methods. An experimental design using randomly-chosen experimental and control groups of first-year graduate students was employed. Experimental conditions involved communication laboratories consisting of didactic and experiential learning opportunities organized in a systematic and sequential fashion. The findings supported the hypothesis that the experimental groups would significantly outperform the control groups on the criterion variable. A second hypothesis, that the control groups would not achieve significant gains, was refuted.  相似文献   
84.
Social work students need to develop practice skills with racially and ethnically diverse clients. Previous research has found benefits to using individual simulated clients, and working with a group would not only provide facilitation opportunities, it could also increase students’ exposure to diversity. This article presents a social work group practice class that used simulated clients and the evaluation of the pedagogy using a mixed-methods design. Students’ scores on the Diversity and Oppression Scale significantly improved from pretest to posttest. Focus groups clarified the impact. The results of this exploratory pilot study suggest that this approach allowed students to learn to manage emotional responses, promoted student insights, and provided opportunities to challenge student assumptions.  相似文献   
85.
ABSTRACT

This paper will argue that 3D digital animation, unlike its 2D and stop-motion counterparts, currently lacks recognisable self-reflexive aesthetic devices through which the trace of animators’ labour can be made visible. It will open with a brief history of how animation has previously shown its workings; from the pencil-wielding hand of Émile Cohl to the opening seconds of South Park, plus the intentional and unintentional smears and multiples visible on animation cells. These devices will then be discussed in relation to Marx’s analysis of the commodity in Capital Vol. 1, and how the process of fetishisation is momentarily disrupted by imperfections in the object which have been caused by production errors. These faults reconnect the object to its producer through the trace of (imperfect) labour which remains visible on the surface. In animation, similar (albeit consciously made) ‘errors’ connect the perceptive viewer directly to the work of 2D or stop-motion animators. This paper will argue the need for an equivalent to emerge in 3D digital animation, as well as highlighting some contemporary animators testing and subverting the limits of 3D and sketching some possible ways these might encourage further formal innovations.  相似文献   
86.
Schools at the P-12 level increasingly face crises related to school shootings, violence, and other tragedies. Understanding the communication challenges schools face is paramount to assisting schools with communication before, during, and after crisis events. The current study focuses on the challenges created by media interest in such crises and the strategies implemented to overcome these challenges and provide responsible information to stakeholders. Interviews conducted with 21 school crisis teams at the P-12 level revealed that sensationalism, seeking alternative routes to information, and framing were key challenges in working with the media. In light of these challenges, administrators focused on creating media plans, building relationships with the media, being accurate but guarded, and communicating reassurance and reunification. Implications are discussed for school districts nationally.  相似文献   
87.
This study utilized data from the National Survey of American Life to investigate the use of professional services and informal support among African American and Caribbean black men with a lifetime mood, anxiety, or substance use disorder. Thirty-three percent used both professional services and informal support, 14% relied on professional services only, 24% used informal support only, and 29% did not seek help. African American men were more likely than to rely on informal support alone. Having co-occurring mental and substance disorders, experiencing an episode in the past 12 months, and having more people in the informal network increased the likelihood of using professional services and informal supports. Marital status, age, and socioeconomic status were also significantly related to help-seeking. The results suggests potential unmet need. However, the reliance on informal support also suggests a strong protective role that informal networks play in the lives of black men.  相似文献   
88.
89.
Sometimes conducting an experiment to ascertain the state of a system changes the state of the system being measured. Kahneman & Tversky modelled this effect with support theory. Quantum physics models this effect with probability amplitude mechanics. As this paper shows, probability amplitude mechanics is similar to support theory. Additionally, Viscusi's proposed generalized expected utility model has an analogy in quantum mechanics.  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