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   8742篇
  免费   12篇
各国政治   207篇
工人农民   1130篇
世界政治   283篇
外交国际关系   298篇
法律   4912篇
中国政治   7篇
政治理论   1915篇
综合类   2篇
  2020年   2篇
  2019年   4篇
  2018年   1277篇
  2017年   1208篇
  2016年   1033篇
  2015年   71篇
  2014年   27篇
  2013年   66篇
  2012年   197篇
  2011年   923篇
  2010年   1028篇
  2009年   591篇
  2008年   752篇
  2007年   712篇
  2006年   32篇
  2005年   90篇
  2004年   181篇
  2003年   159篇
  2002年   61篇
  2001年   10篇
  2000年   12篇
  1999年   13篇
  1998年   21篇
  1997年   16篇
  1996年   25篇
  1995年   34篇
  1994年   30篇
  1993年   13篇
  1992年   11篇
  1991年   9篇
  1990年   6篇
  1989年   7篇
  1988年   6篇
  1987年   9篇
  1986年   9篇
  1985年   10篇
  1984年   13篇
  1983年   15篇
  1982年   9篇
  1981年   6篇
  1980年   3篇
  1979年   8篇
  1978年   12篇
  1977年   15篇
  1976年   2篇
  1975年   3篇
  1974年   4篇
  1972年   3篇
  1970年   2篇
  1967年   1篇
排序方式: 共有8754条查询结果,搜索用时 15 毫秒
831.
Despite developments in police psychology in North America and Europe, little is known about developments in other parts of the world. Yet, this knowledge will reinforce the development of the field of police psychology internationally and strengthen its scientific theories, practices and programs. This paper therefore traces the development of police psychology in Singapore for over two decades across four waves of development. This paper also describes the developments in three areas of police psychology (services to police officers, police operations and the police organization) and details the various police psychological services programs and services in Singapore. The paper concludes with a discussion on strategic concerns for police psychologists worldwide, arguing that there is a need to discuss the ‘what works, when and where?’ in police psychology, when it is applied across the world.  相似文献   
832.
833.
Advocates, clinicians, policy makers, and survivors frequently cite intimate partner violence (IPV) as an immediate cause of or precursor to housing problems. Research has indicated an association between homelessness and IPV, yet few studies examine IPV and housing instability. Housing instability differs from homelessness, in that someone experiencing housing instability may currently have a place to live but faces difficulties with maintaining the residence. We present baseline findings from a longitudinal cohort study of 278 female IPV survivors with housing as a primary concern. Our analysis indicates the greater the number of housing instability risk factors (e.g., eviction notice, problems with landlord, moving multiple times), the more likely the abused woman reported symptoms consistent with PTSD (p < .001), depression (p < .001), reduced quality of life (p < .001), increased work/school absence (OR = 1.28, p < .004), and increased hospital/emergency department use (OR = 1.22, p < .001). These outcomes persist even when controlling for the level of danger in the abusive relationship and for survivors' drug and alcohol use. Importantly, both housing instability and danger level had stronger associations with negative health outcomes than other factors such as age, alcohol, and drug use; both make unique contributions to negative health outcomes and could contribute in different ways. Housing instability is an important and understudied social determinant of health for IPV survivors. These findings begin to address the literature gap on the relationship between housing instability, IPV, and survivors' health, employment, and utilization of medical care services.  相似文献   
834.
Prior research has provided substantial evidence that child maltreatment and exposure to physical intimate partner violence (IPV) are associated with increased externalizing behavior problems among children and adolescents. However, little is known about the effects of exposure to psychological IPV and exposure to the physical abuse of a sibling. Using a total sample (N = 2,572) and subsample (n = 441) of children ages 3–18 years old, the purpose of this study was to assess whether cumulative types of family violence lead to higher mean externalizing behavior scores and to examine the effects of single types of indirect and direct family violence on children’s mean externalizing behavior scores. Results confirmed that children who experienced any type of family violence victimization had higher mean externalizing behavior scores compared to children with no history of family violence; however, few differences in externalizing behavior scores were found as the number of family violence types increased. Children who experienced indirect types of family violence (e.g., exposure to the physical abuse of a sibling) had higher externalizing behavior scores than children who experienced direct maltreatment (e.g., child physical abuse). Findings from this study suggest that researchers and service providers should adopt a broader conceptualization of family violence victimization and increase the amount of services provided to children who are indirectly victimized.  相似文献   
835.
Limited information is available about the international generalizability of the common conclusion that marital discord tends to be associated with problematic parenting. Pakistan is a sociocultural context known for a high frequency of marital distress. Accordingly, this study draws from a sample of 270 Pakistani families with children between the ages of 9 to 13 years (M?=?11.21 years). In this study we explore the question: Are Pakistani children’s perceptions of maternal and/or paternal rejection related to their parents’ perceptions of spousal rejection? Results of a hierarchical multiple regression analyses showed that wives’ perceptions of husbands’ rejection predicted children’s perceptions of maternal rejection, as well as—but to a significantly lesser extent—children’s perceptions of paternal rejection. Similarly, husbands’ perceptions of wives’ rejection predicted children’s perceptions of paternal rejection, as well as—but to a significantly lesser extent—children’s perceptions of maternal rejection. Results of this research, along with the slim body of prior international research, suggests that the concept of “spillover effect” used to explain the association between spousal rejection and parental rejection may have widespread international applicability.  相似文献   
836.
This study reports a grounded theory study of the process of how children tell of their experiences of child sexual abuse from the perspectives of young people and their parents. Individual interviews were conducted with 22 young people aged 8 to 18, and 14 parents. A theoretical model was developed that conceptualises the process of disclosure as one of containing the secret of child sexual abuse. Three key dynamics were identified: the active withholding of the secret on the part of the child, the experience of a 'pressure cooker effect' reflecting a conflict between the wish to tell and the wish to keep the secret, and the confiding itself which often occurs in the context of an intimacy being shared. Children's experiences of disclosure were multidetermined and suggest the need for multifaceted and multisystemic approaches to prevention and intervention. The need for the secret to be contained, individually and interpersonally in appropriate safeguarding and therapeutic contexts needs to be respected in helping children tell.  相似文献   
837.
Despite financial innovations that have created important new substitutes for cash usage, per capita holdings of U.S. currency amount to $2950. Yet American households and businesses admit to holding only 15% of the currency stock, leaving the whereabouts of 85% unknown. Some fraction of this unaccounted for currency is held abroad (the dollarization hypothesis) and some is held domestically undeclared, as a store of value and a medium of exchange for transactions involving the production and distribution of illegal goods and services, and for transactions earning income that is not reported to the IRS (the unreported economy hypothesis). We find that the percentage of U.S. currency currently held overseas is between 30 and 37% rather than the widely cited figure of 65%. This finding is based on the official Federal Reserve/Bureau of Economic Analysis data which is a proxy measure of the New York Federal Reserve’s (NYB) “confidential” data on wholesale currency shipments abroad. We recommend that the NYB data be aggregated so as to circumvent confidentiality concerns, and be made readily available to all researchers in order to shed greater light on the questions of how much U.S. currency is abroad and on the particular location of overseas U.S. dollars. The newly revised official estimates of overseas currency holdings are employed to determine the Federal Reserve’s seigniorage earnings from 1964–2010, which have provided a $2950. Yet American households and businesses admit to holding only 15% of the currency stock, leaving the whereabouts of 85% unknown. Some fraction of this unaccounted for currency is held abroad (the dollarization hypothesis) and some is held domestically undeclared, as a store of value and a medium of exchange for transactions involving the production and distribution of illegal goods and services, and for transactions earning income that is not reported to the IRS (the unreported economy hypothesis). We find that the percentage of U.S. currency currently held overseas is between 30 and 37% rather than the widely cited figure of 65%. This finding is based on the official Federal Reserve/Bureau of Economic Analysis data which is a proxy measure of the New York Federal Reserve’s (NYB) “confidential” data on wholesale currency shipments abroad. We recommend that the NYB data be aggregated so as to circumvent confidentiality concerns, and be made readily available to all researchers in order to shed greater light on the questions of how much U.S. currency is abroad and on the particular location of overseas U.S. dollars. The newly revised official estimates of overseas currency holdings are employed to determine the Federal Reserve’s seigniorage earnings from 1964–2010, which have provided a 287 billion windfall for U.S. taxpayers. Overseas currency stock data are also used to derive estimates of the domestically held stock of currency as well as narrow and broad measures of domestic monetary aggregates. These domestic monetary aggregates are believed to be better predictors of future economic activity than traditional monetary aggregates and are tested to determine their ability to predict fluctuations in real output and prices. Domestic cash holdings are finally used to estimate the size of the U.S. unreported economy as measured by the amount of income that is not properly reported to the IRS. By 2010, we estimate that legal and illegal source unreported income” is $1.9–$1.9–2.4 trillion, implying a “tax gap” in the range of $400–$400–540 billion. Currently, we estimate that 18–23% of total reportable income is not properly reported to the IRS.  相似文献   
838.
Based on ethnographic data, this essay analyzes the social order properties of a poor urban street, in a small city in the northeast United States, on which drug dealing is the principle occupation. Rather than treating drug dealing as an agent of disorder, we focus on the order properties of drug dealing and the ordered character of the local code of conduct that develops around it. Like Sudhir Venkatesh (American Journal of Sociology 103:82–111, 1997) we examine the interface between drug dealing and the neighborhood. However, in this small urban space the drug dealers are not outsiders, rather, they are long term residents: established insiders who are well integrated into community life. As such their work practices and the requirements they place on behavior in public spaces impact the neighborhood in comprehensive ways. We detail the phenomenon Elijah Anderson called the “code of the street” (Anderson 1999) as a set of practices and social markers, a local Interaction Order (Goffman, American Sociological Review 48:1–17, 1983; Rawls, Sociological Theory 2:136–149, 1987), that furnishes basic day to day sensemaking tools for residents (Rawls 2009). We propose that this order has a constitutive character that furnishes stable expectations (Garfinkel 1963, 1967) for meaningful social action and identity in the neighborhood. In a context of industrial decline and urban poverty, drug dealing careers constitute a major socialization factor, that touches everyone here—especially children.  相似文献   
839.
This study investigates the factors that shape the attitudes of scientists toward starting their own business or working in a private sector firm. The analysis is based on data collected from scientists working in the German Max Planck Society, a research institution devoted to basic science. We find that the scientists’ attractiveness of working in a private sector firm or of starting their own business differ considerably according to their academic discipline and the self-reported commercial potential of their research. The ability to take risks, prior work experience in private firms, and personal experience in cooperating with industry lead to a positive attitude towards switching to private sector employment or entrepreneurship. Strong willingness to freely distribute research findings is related to a low appeal of private sector work.  相似文献   
840.
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