全文获取类型
收费全文 | 30355篇 |
免费 | 556篇 |
国内免费 | 1篇 |
专业分类
管理学 | 4088篇 |
民族学 | 189篇 |
人才学 | 1篇 |
人口学 | 4168篇 |
丛书文集 | 104篇 |
教育普及 | 2篇 |
理论方法论 | 2378篇 |
综合类 | 700篇 |
社会学 | 14535篇 |
统计学 | 4747篇 |
出版年
2023年 | 119篇 |
2021年 | 110篇 |
2020年 | 333篇 |
2019年 | 421篇 |
2018年 | 2061篇 |
2017年 | 2257篇 |
2016年 | 1533篇 |
2015年 | 434篇 |
2014年 | 497篇 |
2013年 | 3457篇 |
2012年 | 972篇 |
2011年 | 1669篇 |
2010年 | 1399篇 |
2009年 | 1150篇 |
2008年 | 1239篇 |
2007年 | 1394篇 |
2006年 | 416篇 |
2005年 | 733篇 |
2004年 | 694篇 |
2003年 | 628篇 |
2002年 | 514篇 |
2001年 | 482篇 |
2000年 | 465篇 |
1999年 | 473篇 |
1998年 | 338篇 |
1997年 | 322篇 |
1996年 | 352篇 |
1995年 | 293篇 |
1994年 | 303篇 |
1993年 | 278篇 |
1992年 | 338篇 |
1991年 | 347篇 |
1990年 | 323篇 |
1989年 | 339篇 |
1988年 | 278篇 |
1987年 | 280篇 |
1986年 | 269篇 |
1985年 | 276篇 |
1984年 | 288篇 |
1983年 | 290篇 |
1982年 | 229篇 |
1981年 | 209篇 |
1980年 | 202篇 |
1979年 | 238篇 |
1978年 | 205篇 |
1977年 | 173篇 |
1976年 | 162篇 |
1975年 | 153篇 |
1974年 | 140篇 |
1973年 | 134篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
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
42.
Brent A. McBride Sarah J. Schoppe Thomas R. Rane 《Journal of marriage and the family》2002,64(4):998-1011
This study examined variations in the relationships among child characteristics, parenting stress, and parental involvement. Participants were 100 two‐parent families with preschool‐aged children. Self‐report and interview data were collected to measure parental involvement, as well as perceptions of child temperament and parental stress. Analyses revealed significant, yet somewhat different, associations between child temperament and parental stress for mothers and fathers. More significant associations were found between perceptions of child temperament and involvement for fathers than for mothers. The associations between child temperament and parental stress and involvement differed on the basis of child and parent gender. Results are discussed in terms of future research on father involvement, as well as programs designed to encourage fathers to assume more active parental roles. 相似文献
43.
In light of use by airline unions of partial-strike tactics, such as concerted refusals to bid for overtime work and so-called
” CHAOS” tactics involving unannounced refusals to fly after passengers have been ticketed and are ready to board, the authors
examine whether the Railway Labor Act (RLA) should be interpreted to permit employers to discipline employees for engaging
in such tactics, or whether these are a protected form of economic pressure. Although in many respects bargaining duties and
economic weapons under the RLA are read consonant with precedents under the National Labor Relations Act (NLRA) (which governs
all industries other than rail and air transport), there are a few decisions suggesting that during the period when self-help
may be resorted to, employees can engage in partial strike activities as long as they violate no court order but are subject
to permanent replacement in limited circumstances. These decisions, the authors submit, fail to take account of Supreme Court
decsions since the 1930s that some economic pressures by unions, such as slowdowns and sitins, may not violate the labor laws
but nor are they protected by those laws so as to immunize partial strikers from employer discipline. These decisions are
not based on unique features of the NLRA. Rather, they give recognition to the background assumptions of Congress that employers
may act to protect their property interests as long as they do not run afoul of NLRA or RLA protections and that employees
who engage in partial-strike activities are subject to employer discipline even where not strictly necessary to maintain operations.
Moreover, these tactics skew the bargaining process by giving employees an essentially risk-free gambit to pressure their
economic position through planned disruption of carrier operations.
Professor Estreicher is also labor and employment counsel to O’Melveny & Myers, LLP. The views expressed herein are the authors’
and should not be attributed to any organization. Hannah Breshin and Tom Jerman of O’Melveny & Myers, assisted the authors
with this article. We also thank Professor Herbert Northrup for his helpful comments. 相似文献
44.
45.
46.
47.
Dina M. Carbonell Helen Z. Reinherz Rose M. Giaconia Cecilia K. Stashwick Angela D. Paradis William R. Beardslee 《Child and Adolescent Social Work Journal》2002,19(5):393-412
In a longitudinal, community-based study, adolescent protective factors for those at risk for depression were identified that were associated with resilient outcomes in young adulthood. For those with childhood risk factors for major depression, significant protective factors included family cohesion, positive self appraisals, and good interpersonal relations. Findings may help inform the development of prevention and treatment programs for adolescents vulnerable to depression. Implications for future research and clinical practice are discussed. 相似文献
48.
49.
Fire and restoration of the largest urban forest of the world in Rio de Janeiro City,Brazil 总被引:1,自引:1,他引:0
National Park of Tijuca in Rio de Janeiro (Brazil) is about 3,300 ha and considered the largest urban forest in the world. Its floristic composition is typical of Atlantic Rain Forest. The reserve is being altered because of fire occurrences and urban expansion. This study identified locations and causes of forest fires, and makes management recommendations to restore damaged areas. From 1991 to 2000, forest firefighters recorded an average of 75-fire occurrences/year. Identified causes included hot air balloons (24%), intentional (24%), rubbish burning (21%) and religious practices (17%). Primary fuels included invasive grasses and ferns. Although hot air balloons destroyed larger areas of forest in each occurrence, a greater number of fires started in the invasive vegetation along roads that bisect the forest. In response to recurrent forests, invasive vegetation has spread gradually into the forest increasing forest degradation. To decrease fire damage, sites with high fire frequencies and density of invasive vegetation were planted with less flammable species. Results indicate that fire frequency decreased and density of invasive vegetation declined. This approach appears to prevent fire incidence, reduce the need for fire fighting, and preserve existing biodiversity. 相似文献
50.
森林可持续经营的政策支持体系——亚太区域示范林项目中国临安示范林实践 总被引:2,自引:0,他引:2
运用参与性诊断(即PRRA)方法对临安示范林地区的森林经营主要政策进行了诊断分析,找出了现行政策存在的问题,如:政策环境欠佳,产权政策不到位,税费政策不合理,林业产品生产、加工和销售脱节,森林生态效益补偿政策欠规范、不合理等.同时,运用参与性设计的方法对若干主要政策进行专项设计,并在此基础上,从优化森林可持续经营的政策环境和规范政策系统运行两方面入手,提出一套科学、合理和有效的适合当地水平的森林可持续经营综合设计方案,以促进示范林网络的发展. 相似文献