全文获取类型
收费全文 | 313篇 |
免费 | 3篇 |
专业分类
各国政治 | 6篇 |
工人农民 | 18篇 |
世界政治 | 23篇 |
外交国际关系 | 15篇 |
法律 | 180篇 |
中国政治 | 2篇 |
政治理论 | 71篇 |
综合类 | 1篇 |
出版年
2023年 | 1篇 |
2022年 | 1篇 |
2021年 | 1篇 |
2020年 | 1篇 |
2019年 | 5篇 |
2018年 | 2篇 |
2017年 | 2篇 |
2016年 | 6篇 |
2015年 | 4篇 |
2014年 | 1篇 |
2013年 | 39篇 |
2012年 | 8篇 |
2011年 | 8篇 |
2010年 | 10篇 |
2009年 | 3篇 |
2008年 | 12篇 |
2007年 | 10篇 |
2006年 | 10篇 |
2005年 | 6篇 |
2004年 | 5篇 |
2003年 | 9篇 |
2002年 | 6篇 |
2001年 | 4篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 7篇 |
1997年 | 3篇 |
1996年 | 4篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 6篇 |
1992年 | 5篇 |
1991年 | 7篇 |
1990年 | 6篇 |
1989年 | 6篇 |
1988年 | 13篇 |
1987年 | 14篇 |
1986年 | 5篇 |
1985年 | 5篇 |
1984年 | 12篇 |
1983年 | 6篇 |
1982年 | 7篇 |
1981年 | 8篇 |
1980年 | 8篇 |
1979年 | 6篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 1篇 |
1974年 | 3篇 |
排序方式: 共有316条查询结果,搜索用时 453 毫秒
221.
222.
Susan J. Popkin Diane K. Levy Laura E. Harris Jennifer Comey Mary K. Cunningham Larry F. Buron 《Housing Policy Debate》2013,23(2):385-414
Abstract During the 1990s, the federal government dramatically changed its policy on housing the poor. Under the HOPE VI (Housing Opportunities for People Everywhere) Program, the U.S. Department of Housing and Urban Development intended to address the concentration of troubled low‐income households in public housing by moving away from its reliance on project‐based assistance and promoting instead the construction of mixed‐income housing and the use of housing subsidies. This article presents important evidence from two systematic, multicity studies on how the original residents of HOPE VI developments have been affected by this radical new approach to public housing. While many residents have clearly benefited, the findings raise critical questions about whether the transformation of public housing will achieve its potential as a powerful force for improving the lives of low‐income families. 相似文献
223.
Susan J. Popkin Larry F. Buron Diane K. Levy Mary K. Cunningham 《Housing Policy Debate》2013,23(4):911-942
Abstract The current transformation of public and assisted housing reflects the legacy of the Gautreaux case, which created the first mobility and scattered‐site programs. Mixed‐income and dispersal strategies now dominate federal housing policy, although their focus has shifted. Drawing on evidence from two preliminary studies of public housing transformation in Chicago, we argue that these new strategies seem to offer benefits for distressed public housing communities but also involve risks for the most vulnerable current tenants. Increased screening and/or the need to compete with private market tenants may force these families out of the assisted housing market. Addressing the complex needs of the most troubled public housing tenants will call for a more comprehensive solution. The intent of the Gautreaux case was to increase opportunity and enhance quality of life for public housing tenants; policy makers should take steps to ensure that current programs reflect these fundamental goals. 相似文献
224.
Robert B. Olsen Larry L. Orr Stephen H. Bell Elizabeth A. Stuart 《Journal of policy analysis and management》2013,32(1):107-121
Evaluations of the impact of social programs are often carried out in multiple sites, such as school districts, housing authorities, local TANF offices, or One‐Stop Career Centers. Most evaluations select sites purposively following a process that is nonrandom. Unfortunately, purposive site selection can produce a sample of sites that is not representative of the population of interest for the program. In this paper, we propose a conceptual model of purposive site selection. We begin with the proposition that a purposive sample of sites can usefully be conceptualized as a random sample of sites from some well‐defined population, for which the sampling probabilities are unknown and vary across sites. This proposition allows us to derive a formal, yet intuitive, mathematical expression for the bias in the pooled impact estimate when sites are selected purposively. This formula helps us to better understand the consequences of selecting sites purposively, and the factors that contribute to the bias. Additional research is needed to obtain evidence on how large the bias tends to be in actual studies that select sites purposively, and to develop methods to increase the external validity of these studies. © 2012 by the Association for Public Policy Analysis and Management. 相似文献
225.
Larry Ray 《Economy and Society》2013,42(2):198-221
This paper offers an interpretaion of 'Islamic fundamentalism', especially the Iranian Revolution, in the context of sociological debates about 'modernity'. The problematic nature of both these terms is acknowledge. It criticizes explanations of 'fundamentalism' that begin from the assumption of a dichotomy between fundamentalism and modernity, arguing instead for a more nuanced understanding of both Islamic revivalism and the modern. The paper begins by offering a model of modernity as a set of bi-modal tensions within which Islamic 'fundamentalism' could be understood as a form of modernist revolutionary populism. This argument is then developed through a comparison betwen the 1979 Iranian Revolution and the Jacobin phase of the French Revolution. It argues that there are parallels between the idea of Islamic revolution and the Jacobin revolutionary imagination, which demonstrate with some observations on Islam, and the closure of the Jacobin revolutionary project. 相似文献
226.
Extensive studies have been carried out and theories expounded on leadership, yet no agreement has been reached on both definition and standards of leadership. The researcher takes the view that all the effort put on the study of leadership should have been directed toward the study of"followership". The characteristics and types of followers are central to the success of any leadership in the particular environment. In this study, followership is classified as voluntary and not coerced. The leadership would therefore depend on the nature of the followers and their expectations, meaning that followers predetermine the nature of leadership. Critical to this is the nature of the power used by the leader in relation to the power of the followers. A continuum of followership is constructed along the extremes of transactional and transformational leadership styles. The continuum is a useful tool and model for effective leadership, effective leadership is therefore dependent on the level of the maturity of the followers and the agreeableness and congruency between the leader and the followers. The article concludes that effectiveness of leadership is a direct result of the willingness of the followers to be led in that particular fashion. Broadly speaking, effective leadership styles are customised to meet the followers' demands and expectations. 相似文献
227.
228.
Schwartz SJ Beyers W Luyckx K Soenens B Zamboanga BL Forthun LF Hardy SA Vazsonyi AT Ham LS Kim SY Whitbourne SK Waterman AS 《Journal of youth and adolescence》2011,40(7):839-859
Identity is a critical developmental task during the transition to adulthood in Western societies. The purpose of the present study was to evaluate an empirically based, cluster-analytic identity status model, to examine whether all four of Marcia's identity statuses (diffusion, foreclosure, moratorium, and achievement) would emerge empirically, and to identify different patterns of identity formation among American college-attending emerging adults. An ethnically diverse sample of 9,034 emerging-adult students (73% female; mean age 19.73?years) from 30 U.S. universities completed measures of identity exploration (ruminative, in breadth, and in depth) and commitment (commitment making and identification with commitment), identity synthesis and confusion, positive and negative psychosocial functioning, and health-compromising behaviors. The identity status cluster solution that emerged provided an adequate fit to the data and included all four of Marcia's original identity statuses, along with Carefree Diffusion and Undifferentiated statuses. Results provided evidence for concurrent validity, construct validity, and practical applicability of these statuses. Implications for identity research are discussed. 相似文献
229.
Abstract: Bloodstain pattern analysis can provide insight into a sequence of events associated with a violent crime. However, bloodstain pattern analysis can be confounded by the feeding activity of blow flies. We conducted two laboratory experiments to investigate the relationships between Lucilia sericata (green bottle fly) and Calliphora vicina (blue bottle fly), expirated bloodstains, and pooled bloodstains on a range of surfaces (linoleum, wallpaper, textured paint). C. vicina and L. sericata changed bloodstain pattern morphology through feeding and defecation. They also deposited artifacts in rooms where blood was not present originally. Chemical presumptive tests (Hemastix®, phenolphthalein, leucocrystal violet, fluorescein) were not able to differentiate between insect artifacts and bloodstains. Thus, C. vicina and L. sericata can confound bloodstain pattern analysis, crime scene investigation, and reconstruction. Crime scene investigators should be aware of these fundamental behaviors, and the effects that blow flies can have on expirated and pooled bloodstain patterns. 相似文献
230.
Bloodstain pattern analysis can be critical to accurate crime scene reconstruction. However, bloodstain patterns can be altered in the presence of insects and can confound crime scene reconstruction. To address this problem, we conducted a series of controlled laboratory experiments to investigate the effect of Lucilia sericata (Meigen) on impact bloodstains and pooled bloodstains in association with three combinations of common surfaces (linoleum/painted drywall, wood floor/wallpaper, and carpet/wood paneling). L. sericata fed from the pooled bloodstains and added insect stains through regurgitation and defecation of consumed blood. L. sericata formed defecatory trails of insect stains that indicated directionality. Defecatory stains fluoresced when viewed at 465 nm with an orange filter. These observations differed from Calliphora vicina insect stains because feeding on blood spatter was not observed and trails of insect stains were formed by L. sericata. The fluorescence of defecatory stains can be used as a method to detect insect stains and discriminate them from real bloodstains. 相似文献