全文获取类型
收费全文 | 13997篇 |
免费 | 486篇 |
国内免费 | 2篇 |
专业分类
管理学 | 1881篇 |
民族学 | 99篇 |
人才学 | 4篇 |
人口学 | 1383篇 |
丛书文集 | 85篇 |
理论方法论 | 1437篇 |
综合类 | 262篇 |
社会学 | 7131篇 |
统计学 | 2203篇 |
出版年
2023年 | 97篇 |
2022年 | 76篇 |
2021年 | 119篇 |
2020年 | 301篇 |
2019年 | 419篇 |
2018年 | 505篇 |
2017年 | 623篇 |
2016年 | 490篇 |
2015年 | 324篇 |
2014年 | 412篇 |
2013年 | 2307篇 |
2012年 | 571篇 |
2011年 | 471篇 |
2010年 | 390篇 |
2009年 | 366篇 |
2008年 | 348篇 |
2007年 | 380篇 |
2006年 | 337篇 |
2005年 | 321篇 |
2004年 | 317篇 |
2003年 | 231篇 |
2002年 | 267篇 |
2001年 | 303篇 |
2000年 | 264篇 |
1999年 | 235篇 |
1998年 | 196篇 |
1997年 | 179篇 |
1996年 | 179篇 |
1995年 | 162篇 |
1994年 | 179篇 |
1993年 | 168篇 |
1992年 | 176篇 |
1991年 | 165篇 |
1990年 | 163篇 |
1989年 | 156篇 |
1988年 | 144篇 |
1987年 | 152篇 |
1986年 | 122篇 |
1985年 | 158篇 |
1984年 | 160篇 |
1983年 | 148篇 |
1982年 | 128篇 |
1981年 | 94篇 |
1980年 | 120篇 |
1979年 | 122篇 |
1978年 | 107篇 |
1977年 | 89篇 |
1976年 | 95篇 |
1975年 | 103篇 |
1974年 | 96篇 |
排序方式: 共有10000条查询结果,搜索用时 875 毫秒
11.
Luis Villar-Fidalgo María del Mar Espinosa Escudero Manuel Domínguez Somonte 《生产规划与管理》2019,30(8):624-638
Not only ETO (Engineering to Order), but even serial production industry should know how to deal with projects and their schedule: plant commissioning, shutdown, introducing new products and similar circumstances should be managed with adequate planning and resource allocation techniques to create a schedule useful in decision making during the execution. The current complex reality, with evolving technologies and fierce pressure to reach the market as soon as possible, pushes the project managers to use more advanced techniques than waterfall planning, such as agile or lean. It also requires them to take a holistic view and manage concurrent tasks in complex projects. The contributions of this paper are two: the proposal to control specific parallel groups of waterfall activities under uncertain environments, which can lead to iterations and reworks, as a single concurrent Activity Managed by Kanban Methods (AMKM). This activity can be subsequently embedded into traditional scheduling approaches as CPM-PERT. The second contribution is the feasibility of its application in industrial environments due to the affordability of simulation software. Two use cases are shown as evidence. It is not a disruptive proposal, but a kaizen action based on very mature technologies. Finally, it is suggested some improvements to be implemented in Project Management Software due to this ‘kaizen’ proposal. 相似文献
12.
Theory and Decision - 相似文献
13.
14.
15.
Susan D. Calkins Susan E. Dedmon Kathryn L. Gill Laura E. Lomax Laura M. Johnson 《Infancy》2002,3(2):175-197
A study sample of 162 six‐month‐old children was selected from a larger sample of 346 infants on the basis of parents' report of their infants' temperament and a laboratory assessment of temperament. Infants were classified as easily frustrated and less easily frustrated and compared on a number of emotion regulation, physiology, and temperament measures. Results indicated that male and female infants were equally likely to be classified as frustrated and less easily frustrated; however, male infants were less able to regulate physiologically. Easily frustrated infants used different emotion regulation strategies and were observed to be less attentive and more active than less easily frustrated infants when observed in the laboratory. These infants were also characterized by their parents as more active, less attentive, and more distressed to novelty. Infants classified as easily frustrated were more reactive physiologically and less able to regulate physiological reactivity than their less easily frustrated counterparts. It is hypothesized that this cluster of characteristics may constitute a unique temperamental type that may have implications for other types of behavioral functioning. Limitations of the study are that observations are based on a single brief assessment of the infant, modest effect sizes were found, and the study is cross‐sectional. 相似文献
16.
What do voters really know about party platforms and how do they perceive the contents? Are there any relationships between party election platforms and electoral behavior? Despite of much research on parties, there are hardly any answers to these questions. If political parties devise programmes in order to influence political attitudes or electoral behavior, it will be necessary that these programmes are read by people. But it seems to be unclear if and how people do so. This article shows clearly that voters don’t know much about party manifestoes. Still, programmes are more important for voters than many people believe. Programmes are also an important factor for electoral behavior. But there is still a lack of data to get evident results. 相似文献
17.
This study tests a hypothesis that Mexican foreign‐born immigrants who came to the United States for economic reasons naturalize less often than Cubans who immigrate for political reasons. It uses information from the Panel Study of Income Dynamics, Latino Sample, a national sample of 7,453 respondents from the 1989 Latino National Political Survey (LNPS) and the 1990 Panel Study of Income Dynamics (PSID). Ordinal logistic regression is used to examine the hypothesis. The results indicate that while more Mexicans plan to apply or have applied for naturalization, proportionately more Cubans than Mexicans have naturalized. Cuban political immigrants who came to the United States during the first half of the 1960s naturalize more often than their Mexican counterparts. However, the effect of ethnic identity on naturalization is mediated by a number of other predictors of naturalization such as gender, race, urban residence, socioeconomic status and acculturation. 相似文献
18.
Sandra G. Turner Carol P. Kaplan Luis Zayas Ruth E. Ross 《Child and Adolescent Social Work Journal》2002,19(5):357-374
Epidemiological data show high rates of suicide attempts among adolescent Latinas. Few studies have addressed the psychosocial, cultural and family correlates of suicide attempts among this age group of a rapidly growing population. The authors studied 31 adolescent Hispanic females who were receiving mental health services; 14 girls had attempted suicide in the previous five years and 17 had never attempted suicide. The two groups of girls did not differ significantly with respect to demographic profiles, levels of depression, family type, acculturation, or self-esteem. However, as hypothesized, the mutuality between girls and their mothers was lower among suicide attempters. Maladaptive coping skills of withdrawal and wishful thinking were more commonly used by attempters, and non-attempters used emotional regulation and problem-solving more frequently. Findings are discussed within the context of the empirical and theoretical literature and implications for practice are considered. 相似文献
19.
The authors examined the impact of sense of coherence on the career thought processes of a sample of college students. A. Antonovsky (1987) defined sense of coherence as the global orientation that the world is comprehensible, manageable, and meaningful. Study participants completed the Sense of Coherence Scale (A. Antonovsky, 1987) and the Career Thoughts Inventory (CTI; J. P. Sampson, G. W. Peterson, J. G. Lenz, R. C. Reardon, & D. E. Saunders, 1996). Multivariate tests indicated a medium relationship between sense of coherence and CTI Total and subscale scores; sense of coherence accounted for 14% of the variance. Univariate tests also indicated a medium relationship between sense of coherence and each subscale. 相似文献
20.
Nairobi ME Network African Evaluation Association Secretariat Rseau Nigrian de Suivi et Evaluation Cape Verde Evaluation Network Rseau Malagache de Suivi et Evaluation Comoros Evaluation Network Eritrean Evaluation Network Malawi ME Network Rseau National de Chercheurs et Evaluateurs de Burundi Rwanda Evaluation Network UNICEF Eastern Southern Africa Region ME Network 《Evaluation and program planning》2002,25(4)
A review of the US ‘program evaluation standards’ (PES), undertaken in a series of workshops and meetings of networks of evaluators in Africa, resulted in modifications to those standards. The result was presented to a plenary session of the Inaugural Conference of the African Evaluation Association in September 1999, attended by over 300 evaluators from 35 countries. The AfrEA Conference decided that a systematic effort should be made to produce a list of African evaluation guidelines, similar to the PES, and that this checklist should be reviewed by national evaluation associations and networks in Africa and field tested in several countries. Ten national and regional networks and associations suggested modifications to the text and endorsed the final version of the guidelines. 相似文献