全文获取类型
收费全文 | 17549篇 |
免费 | 331篇 |
专业分类
管理学 | 2482篇 |
民族学 | 89篇 |
人才学 | 2篇 |
人口学 | 1455篇 |
丛书文集 | 98篇 |
教育普及 | 2篇 |
理论方法论 | 1747篇 |
综合类 | 402篇 |
社会学 | 8793篇 |
统计学 | 2810篇 |
出版年
2023年 | 102篇 |
2021年 | 98篇 |
2020年 | 274篇 |
2019年 | 374篇 |
2018年 | 385篇 |
2017年 | 569篇 |
2016年 | 418篇 |
2015年 | 360篇 |
2014年 | 402篇 |
2013年 | 2815篇 |
2012年 | 585篇 |
2011年 | 548篇 |
2010年 | 373篇 |
2009年 | 370篇 |
2008年 | 406篇 |
2007年 | 456篇 |
2006年 | 378篇 |
2005年 | 500篇 |
2004年 | 456篇 |
2003年 | 375篇 |
2002年 | 407篇 |
2001年 | 430篇 |
2000年 | 389篇 |
1999年 | 394篇 |
1998年 | 269篇 |
1997年 | 270篇 |
1996年 | 267篇 |
1995年 | 235篇 |
1994年 | 245篇 |
1993年 | 236篇 |
1992年 | 289篇 |
1991年 | 277篇 |
1990年 | 256篇 |
1989年 | 266篇 |
1988年 | 239篇 |
1987年 | 223篇 |
1986年 | 230篇 |
1985年 | 202篇 |
1984年 | 252篇 |
1983年 | 233篇 |
1982年 | 204篇 |
1981年 | 172篇 |
1980年 | 173篇 |
1979年 | 194篇 |
1978年 | 159篇 |
1977年 | 136篇 |
1976年 | 120篇 |
1975年 | 119篇 |
1974年 | 108篇 |
1973年 | 102篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
931.
R.W. Lawson 《Long Range Planning》1983,16(4):90-92
The aim of this paper is to make clear the difference between the marketing concept and marketing strategy. It advocates that not only should the former be used by all structures of business organizations, but that it is necessary to do so. It is the marketing strategy chosen by the firm that is dependent upon the organizational structure and not the concept. 相似文献
932.
Delaney KR Pitula CR Perraud S 《Journal of psychosocial nursing and mental health services》2000,38(3):7-13
1. Inpatient treatment programs operating in the managed care environment must clearly articulate their treatment outcomes and the processes of care that are connected to these outcomes. 2. The work of inpatient psychiatric nurses can be organized and articulated through the therapeutic processes of the Four S Model: Safety, Structure, Support, and Symptom Management. 3. Nurses are vital contributors to the inpatient treatment process, but will be marginalized if they are unable to articulate how their interventions contribute to the positive treatment outcomes. 相似文献
933.
934.
Barrios LC Everett SA Simon TR Brener ND 《Journal of American college health : J of ACH》2000,48(5):229-233
Suicide, the endpoint of a continuum that begins with suicide ideation, is the third leading cause of death among the US college-aged population. The first and second leading causes of death among this age group, unintentional injury and homicide, may also be linked to suicide ideation. We used data from the National College Health Risk Behavior Survey to examine the association between suicide ideation and injury-related behaviors among 18- to 24-year-old college students. Students who reported suicide ideation were significantly more likely than students who did not report considering suicide to carry a weapon, engage in a physical fight, boat or swim after drinking alcohol, ride with a driver who had been drinking alcohol, drive after drinking alcohol, and rarely or never used seat belts. Given this clustering of injury-related risk behaviors, college prevention programs should aim to reduce risks for injuries comprehensively, rather than addressing each risk behavior separately. 相似文献
935.
936.
Very few demographic surveys in developing countries have gathered information on household incomes or consumption expenditures. Researchers interested in living standards therefore have had little alternative but to rely on simple proxy indicators. The properties of these proxies have not been analyzed systematically. We ask what hypotheses can be tested using proxies, and compare these indicators with consumption expenditures per adult, our preferred measure of living standards. We find that the proxies employed in much demographic research are very weak predictors of consumption per adult. Nevertheless, hypothesis tests based on proxies are likely to be powerful enough to warrant consideration. 相似文献
937.
938.
OBJECTIVE: This pilot project assessed the effectiveness of an intervention to increase knowledge and reduce risky behaviors related to cumulative trauma disorders (CTD) in office workers. STUDY DESIGN: All 124 employees from the administrative offices of a health maintenance organization were invited to participate. Subjects were followed across time using an identification number. Data were collected via questionnaire in June 1994 (pretest1) (N=84), August 1994 (pretest II) (N= 63) and September 1995 (posttest) (N=40). The yearlong intervention focused on functional activities to prevent CTD. RESULTS: of chi-square analyses for the 40 subjects who completed all surveys indicated this intervention significantly increased overall knowledge of CTD (p =.002). Significant changes in self-reported hand/wrist (p =.016) and neck/shoulder (p =.003) posture were also found. CONCLUSIONS: This study is a first step in identifying effective educational interventions to increase knowledge and reduce risk factors related to CTD in office workers. 相似文献
939.
Urban forest cover of the Chicago region and its relation to household density and income 总被引:12,自引:0,他引:12
Urban forests and herbaceous open space play a vital role in the environmental and aesthetic health of cities, yet they are rarely identified in land-use inventories of urban areas. To provide information on urban forests and other vegetative land cover in Illinois cities, Landsat Thematic Mapper (TM) data from June 27, 1988, were classified for the Chicago metropolitan region (9,717 km2). Ten land-cover classes were identified, including two types of forestland (occupying 5.8% of the total area), residential land with trees (14.6%) or without trees (7.8%), cropland (37.5%), two types of grassland (7.7%), urban with impervious surfaces (23.1%), water (1.6%), and miscellaneous vegetation (2.1%). Correlation analyses indicated that household income and household density are strongly related to land covers in the region, particularly those with tree cover and urbanized land. Population changes for 1980–1985 and 1985–2010 (projected) show a pattern of increasing density in the urbanized zone concurrent with continued urban sprawl, primarily into current cropland. 相似文献
940.
What Determines Trust in Information About Food-Related Risks? Underlying Psychological Constructs 总被引:12,自引:0,他引:12
Trust in risk information about food related-hazards may be an important determinant of public reactions to risk information. One of the central questions addressed by the risk communication literature is why some individuals and organizations are trusted as sources of risk information and others are not. Industry and government often lack public trust, whereas other sources (for example, consumer organizations, the quality media, medical doctors) are highly trusted. Problematically, previous surveys and questionnaire studies have utilized questions generated by the investigators themselves to assess public perceptions of trust in different sources. Furthermore, no account of the hazard domain was made. In the first study reported here, semistructured interviewing was used to elicit underpinning constructs determining trust and distrust in different sources providing food-related risk information ( n = 35). In the second study, the repertory grid method was used to elicit the terminology that respondents use to distinguish between different potential food-related information sources ( n = 35), the data being submitted to generalised Procrustes analysis. The results of the two studies were combined and validated in survey research ( n = 888) where factor analysis indicated that knowledge in itself does not lead to trust, but that trusted sources are seen to be characterised by multiple positive attributes. Contrary to previous research, complete freedom does not lead to trust—rather sources which possess moderate accountability are seen to be the most trusted. 相似文献