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   4797篇
  免费   108篇
  国内免费   1篇
电工技术   30篇
综合类   3篇
化学工业   679篇
金属工艺   24篇
机械仪表   43篇
建筑科学   218篇
矿业工程   86篇
能源动力   67篇
轻工业   464篇
水利工程   33篇
石油天然气   9篇
无线电   173篇
一般工业技术   482篇
冶金工业   2071篇
原子能技术   19篇
自动化技术   505篇
  2022年   37篇
  2021年   69篇
  2020年   38篇
  2019年   51篇
  2018年   58篇
  2017年   63篇
  2016年   83篇
  2015年   55篇
  2014年   62篇
  2013年   228篇
  2012年   156篇
  2011年   202篇
  2010年   189篇
  2009年   162篇
  2008年   209篇
  2007年   214篇
  2006年   161篇
  2005年   190篇
  2004年   150篇
  2003年   171篇
  2002年   141篇
  2001年   111篇
  2000年   93篇
  1999年   123篇
  1998年   156篇
  1997年   136篇
  1996年   147篇
  1995年   99篇
  1994年   105篇
  1993年   116篇
  1992年   101篇
  1991年   47篇
  1990年   99篇
  1989年   80篇
  1988年   83篇
  1987年   82篇
  1986年   86篇
  1985年   74篇
  1984年   58篇
  1983年   54篇
  1982年   49篇
  1981年   38篇
  1980年   24篇
  1979年   38篇
  1978年   38篇
  1977年   30篇
  1976年   30篇
  1975年   22篇
  1974年   16篇
  1973年   19篇
排序方式: 共有4906条查询结果,搜索用时 0 毫秒
21.
Examined the roles of social support from adolescents' mothers and living arrangements in 197 adolescent mother–infant pairs. Major observational measures were teaching interactions, Home Observation for Measurement of the Environment (HOME) scores, and infant attachment security. Adolescents living with neither mothers nor partners had better teaching interactions but lower HOME scores compared with those living with mothers. High mother support was associated with more secure infant attachment only for those adolescents living with partners. When mother support was low, adolescents living alone had more secure infants than adolescents living with partners. Although parenting scores were related to differences in demographics and personal resources (intelligence and social skills), these did not appear to be responsible for the major findings. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
22.
23.
24.
Ambiguity resolution is a central problem in language comprehension. Lexical and syntactic ambiguities are standardly assumed to involve different types of knowledge representations and be resolved by different mechanisms. An alternative account is provided in which both types of ambiguity derive from aspects of lexical representation and are resolved by the same processing mechanisms. Reinterpreting syntactic ambiguity resolution as a form of lexical ambiguity resolution obviates the need for special parsing principles to account for syntactic interpretation preferences, reconciles a number of apparently conflicting results concerning the roles of lexical and contextual information in sentence processing, explains differences among ambiguities in terms of ease of resolution, and provides a more unified account of language comprehension than was previously available. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
25.
Argues that B. F. Skinner (see record 1988-00027-001) failed to recognize the role of behaviorism in the failure of psychology to become a science of behavior. The authors state that behaviorism has generated laws concerning the impact of behavior on certain environments instead of laws of behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
26.
The structure of working memory and its development across the childhood years were investigated in children 4-15 years of age. The children were given multiple assessments of each component of the A. D. Baddeley and G. Hitch (1974) working memory model. Broadly similar linear functions characterized performance on all measures as a function of age. From 6 years onward, a model consisting of 3 distinct but correlated factors corresponding to the working memory model provided a good fit to the data. The results indicate that the basic modular structure of working memory is present from 6 years of age and possibly earlier, with each component undergoing sizable expansion in functional capacity throughout the early and middle school years to adolescence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
27.
This study prospectively examined the relationship between religious attendance, interleukin-6 (IL-6) levels, and mortality rates in a community-based sample of 557 older adults. Attending religious services more than once weekly was a significant predictor of lower subsequent 12-year mortality and elevated IL-6 levels (> 3.19 pg/mL), with a mortality ratio of .32 (95% confidence interval [CI] = 0.15,0.72; p  相似文献   
28.
This clinical study illustrates the developmental nature of homoerotic transference, when the psychoanalyst is attuned to the evolving dynamics of the mourning process, in this case with a lesbian analysand. The analysand's psychic fantasies of the female analyst as a muse and a demon lover figure are seen to transform into discrete mother and father transferences, as split off feminine and aggressive parts of the self are reintegrated along with heterosexual desires and oedipal desires. Protosymbolic enactments in terms of romantic gift giving and other seductive overtures transform into symbolic expressions of love, concern, regret, and tenderness. A lesbian marriage is preserved, and the loss of intimacy with men is mourned so that desires for intimacy with men can be sublimated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
29.
Examination of the assumptions underlying consistency perspectives in social and personality psychology reveals that they are based on an independent, individualistic view of the self. If the self is constructed as relational or interdependent with others, consistency may be less important in social behavior and well-being. Using a variety of measures of well-being, the studies showed that there is a weaker relation between consistency and well-being for individuals with a highly relational self-construal than for those with a low relational self-construal. Study 3 examined the association between the self-construal, consistency, authenticity, and well-being. These findings reveal the importance of a cultural analysis of theories of the self, personality, and well-being for further theory development. (PsycINFO Database Record (c) 2010 APA, all rights reserved)  相似文献   
30.
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