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   13721篇
  免费   341篇
  国内免费   16篇
管理学   1551篇
劳动科学   4篇
民族学   167篇
人才学   4篇
人口学   1121篇
丛书文集   493篇
理论方法论   1105篇
综合类   1037篇
社会学   5746篇
统计学   2850篇
  2023年   65篇
  2022年   99篇
  2021年   94篇
  2020年   197篇
  2019年   233篇
  2018年   357篇
  2017年   476篇
  2016年   312篇
  2015年   277篇
  2014年   338篇
  2013年   2280篇
  2012年   515篇
  2011年   439篇
  2010年   411篇
  2009年   345篇
  2008年   391篇
  2007年   399篇
  2006年   408篇
  2005年   370篇
  2004年   258篇
  2003年   264篇
  2002年   275篇
  2001年   383篇
  2000年   323篇
  1999年   307篇
  1998年   230篇
  1997年   201篇
  1996年   238篇
  1995年   204篇
  1994年   222篇
  1993年   182篇
  1992年   218篇
  1991年   230篇
  1990年   204篇
  1989年   173篇
  1988年   194篇
  1987年   180篇
  1986年   142篇
  1985年   176篇
  1984年   180篇
  1983年   156篇
  1982年   122篇
  1981年   97篇
  1980年   97篇
  1979年   121篇
  1978年   93篇
  1977年   81篇
  1975年   63篇
  1974年   67篇
  1973年   60篇
排序方式: 共有10000条查询结果,搜索用时 414 毫秒
21.
讨论了充分利用C4 0的硬件并行结构进行实数FFT的并行算法 ,并在地震勘探信号处理中得以应用  相似文献   
22.
采用蛋白组学方法,利用4例中国肺癌患者的切除肺癌组织测定了磷癌(SQCLC)的蛋白表达 从双向电泳(2-DEgel)切下53个点,49个蛋白与数据库搜索结果吻合。在鉴定的24个蛋白中,17个蛋白有报道是与肺癌相关的蛋白其7个蛋白与人类其它癌症相关。所建立的蛋白组学方法能够用于建立一种基于组织的化验方法,发现肺癌患者组织中表达的蛋白标记物以用于癌症的分子学诊断。  相似文献   
23.
This paper critically examines Metrovi? and Maffesoli's attempt to understand postmodernity through Émile Durkheim's nonrational link between society, religion and morality. Metrovi? (1991, 1997) and Maffesoli's (1996) work draws upon this emotional element when attempting to refute Baudrillard's (1983) cognitively focused, if implicit, critique of the Durkheimian tradition. Despite their best intentions, Metrovi? and Maffesoli still fail to exploit the partialities of Baudrillard's critique to the full. While both have some appreciation of the link between emotion and religion as found in Durkheim's The Elementary Forms of Religious Life (1912) they, nevertheless, fall short of grasping its full conceptual importance. This leads them to an implicit acceptance of Baudrillard's thesis on the ‘end’ of the social. This pitfall could have been avoided if Metrovi? and Maffesoli had built their respective analyses of the postmodern condition on a closer reading of The Elementary Forms. Reading this text alongside those other insights on emotion and social life as contained within Durkheim and Mauss's Primitive Classification (1903) and Talcott Parsons's subsequent writings on the sociological problem of religion, would have helped to distance the work of Metrovi? and Maffesoli from that of Baudrillard, and allowed them to offer a stronger and more comprehensive defence of the said tradition.  相似文献   
24.
Although picture‐book reading is commonplace during infancy, little is known about the impact of this activity on learning. A previous study showed that 18‐ and 24‐month‐olds imitated a novel action sequence presented in a book that was illustrated with realistic color photos, whereas they failed to imitate from books illustrated with less realistic drawings. In the research reported here, we hypothesized that increasing infants' exposure to a picture book would increase learning from books illustrated with both color photos and drawings. Independent groups of 18‐and 24‐month‐olds were exposed to a picture book either twice in succession or 4 times in succession. The results showed that, regardless of the iconicity of the illustrations, increasing the number of reading sessions significantly improved the infants' imitation scores, compared to age‐matched, no‐demonstration controls. The results are discussed in relation to representational insight and cognitive flexibility.  相似文献   
25.
城市土地是最宝贵的城市资源,也是城市政府拥有的和可支配的一份最大的国有资产.为认真管理好,精心经营好城市土地,福州市积极顺应社会主义市场经济的发展,主动适应我国加入WTO的新形势,在全省率先倡导并实行经营性国有土地使用权公开招标拍卖,大大增强了政府权力运行的透明度,从源头上遏制了腐败现象的滋生;同时也为全社会提供了一个公开、公正、公平竞争的平台,得到了各界和广大开发商的高度评价,并将土地公开招标拍卖称之为"阳光下的交易".  相似文献   
26.
苗族刺绣已被列入首批国家级非物质文化遗产,具有鲜明的艺术特色,但由于受传承方式等的影响,苗绣有濒临失传危机。因此,必须采取多种措施,强化苗绣的保护传承和开发利用。  相似文献   
27.
28.
We define a class of count distributions which includes the Poisson as well as many alternative count models. Then the empirical probability generating function is utilized to construct a test for the Poisson distribution, which is consistent against this class of alternatives. The limit distribution of the test statistic is derived in case of a general underlying distribution, and efficiency considerations are addressed. A simulation study indicates that the new test is comparable in performance to more complicated omnibus tests.  相似文献   
29.
30.
Previous studies have shown that 7.5‐month‐olds can track and encode words in fluent speech, but they fail to equate instances of a word that contrast in talker gender, vocal affect, and fundamental frequency. By 10.5 months, they succeed at generalizing across such variability, marking a clear transition period during which infants' word recognition skills become qualitatively more mature. Here we explore the role of word familiarity in this critical transition and, in particular, whether words that occur frequently in a child's listening environment (i.e., “Mommy” and “Daddy”) are more easily recognized when they differ in surface characteristics than those that infants have not previously encountered (termed nonwords). Results demonstrate that words are segmented from continuous speech in a more linguistically mature fashion than nonwords at 7.5 months, but at 10.5 months, both words and nonwords are segmented in a relatively mature fashion. These findings suggest that early word recognition is facilitated in cases where infants have had significant exposure to items, but at later stages, infants are able to segment items regardless of their presumed familiarity.  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