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   565篇
  免费   21篇
各国政治   36篇
工人农民   81篇
世界政治   38篇
外交国际关系   28篇
法律   278篇
中国政治   6篇
政治理论   115篇
综合类   4篇
  2024年   2篇
  2023年   5篇
  2022年   7篇
  2020年   12篇
  2019年   7篇
  2018年   15篇
  2017年   18篇
  2016年   27篇
  2015年   12篇
  2014年   11篇
  2013年   83篇
  2012年   17篇
  2011年   18篇
  2010年   16篇
  2009年   16篇
  2008年   17篇
  2007年   23篇
  2006年   19篇
  2005年   15篇
  2004年   23篇
  2003年   17篇
  2002年   10篇
  2001年   10篇
  2000年   10篇
  1999年   12篇
  1998年   11篇
  1997年   10篇
  1996年   9篇
  1995年   7篇
  1994年   12篇
  1993年   12篇
  1992年   11篇
  1991年   12篇
  1990年   14篇
  1989年   5篇
  1988年   10篇
  1986年   2篇
  1985年   8篇
  1984年   6篇
  1983年   6篇
  1982年   5篇
  1980年   4篇
  1979年   5篇
  1978年   1篇
  1977年   2篇
  1976年   1篇
  1975年   5篇
  1974年   1篇
  1972年   2篇
  1970年   1篇
排序方式: 共有586条查询结果,搜索用时 15 毫秒
361.
This study evaluated effects of the Iowa Strengthening Families Program, a family-focused universal preventive intervention, on growth patterns of adolescent internalizing (anxiety and depressive symptoms) and monthly polysubstance use (alcohol, tobacco, marijuana, inhalants, and other illicit drugs), as well as the association between internalizing and polysubstance growth factors. The sample consisted of rural Midwestern adolescents (N = 383), followed from sixth through twelfth grade. Compared to the control group, the intervention group adolescents showed a slower rate of increase in internalizing symptoms and polysubstance use. Intervention effects on internalizing symptoms were similar for boys and girls; however, girls demonstrated a higher overall level and a greater rate of increase across time. The intervention slowed the rate of increase in polysubstance use significantly more for girls than for boys, although overall levels of use were lower in the intervention group for both genders. Associations between internalizing and polysubstance use growth factors were found for girls, but not for boys, suggesting gender differences in psychosocial development.
Linda TrudeauEmail:
  相似文献   
362.
The migration of Muslims into European nations and the intolerance exhibited towards them has been a growing challenge for the members of the European Union. The differences between the religion and cultures from which the Muslim women migrate and the receiving countries of the European Union may hamper the provision of social services to them when they experience domestic violence from their intimate partners. This article examines the potential for cross-cultural misunderstanding by examining domestic abuse in Italy in the context of both the social mores and the legal framework of that country. A comparison is made to the traditional perception of the role of women in Islamic culture. The research available on domestic violence in this context is examined as it relates to Italy and its Muslim migrants. The article suggests that what is needed are multidisciplinary cross-cultural solutions to provide services and meet the needs of Muslim victims of domestic violence in Italy.  相似文献   
363.
The overall objectives of the study were to develop a sensitive method for ethyl glucuronide (EtG) determination in hair and then investigate if a low or moderate intake of ethanol could be differentiated from total abstinence. Forty-four subjects were included in the study, 12 males (7 drinkers and 5 abstinent) and 32 females (14 drinkers and 18 abstinent). The study lasted 3 months and the female drinkers consumed one glass (16 g of ethanol) and the males consumed two glasses (32 g of ethanol) of wine (13.5-14%) daily. Hair samples were collected as close as possible above the skin and the proximal 2 cm were analyzed for EtG. Hair was cut into pieces of about 0.5 cm length and washed before incubation overnight in water and then extracted on Clean Screen EtG Carbon columns. The LC/MS/MS system consisted of a Waters ACQUITY UPLC connected to an API 4000 triple quadrupole instrument. Two transitions for EtG and one for the internal standard EtG-D(5) were measured. The method was linear from 60 to 10,000 pg/sample. Imprecision studies were performed at three levels as well as with an authentic sample. Total imprecision was 16% at 200 pg/sample, 8% at 1000 pg/sample, 6% at 8000 pg/sample and 13% at 29 pg/mg in the authentic sample. Of those who drank two glasses of wine every day, four had measurable amounts of EtG in their hair (5-11 pg/mg), and in only one of the females drinking one glass of wine EtG was quantified (3 pg/mg). Among the 23 abstinent subjects two had traces of EtG in the hair. We conclude that persons who ingested 16 or 32 g of ethanol daily for 3 months presented with low concentrations of EtG in hair, well below the proposed threshold for overconsumption set at 30 pg/mg. In addition, none of those who ingested 16 g/day had concentrations over the proposed abstinence threshold of 7 pg/mg.  相似文献   
364.
The purpose of this study was to determine motivators for intimate partner violence (IPV) help-seeking among mothers. This qualitative study used English and Spanish-speaking focus groups and a grounded theory approach. Sixty-two mothers participated in eight groups. Motivators for IPV help-seeking fell into two broad categories, internal and external motivators. Although participants cited numerous motivators for IPV help-seeking, recognizing the negative effects of IPV on their children, labeling the partner’s behavior as abusive and the intervention of others were particularly important. For many participants, the effects of IPV on their children were the most important motivator. Few women made the decision to seek help without the encouragement of others. Unique to the Spanish-speaking participants was the influence of immigration status and limitations to disclosure created by using significant others as translators. Exploration of incorporating these motivators into IPV intervention efforts is warranted.  相似文献   
365.
Forensic scientists may sometimes be asked to identify the presence of urine in cases such as harassment, rape or murder. One popular presumptive test method uses para-dimethylaminocinnamaldehyde (DMAC), favoured because it is simple, rapid and safe. This paper confirms that DMAC reacts with urea rather than creatinine, ammonia or uric acid. Sensitivity studies found that the 0.1% w/v DMAC solution currently used for urine identification detects levels of urea found in other body fluids, potentially resulting in false positives. A 0.05% w/v solution was found to be more appropriate in terms of sensitivity to urea however the test is still not specific for urine, giving positive reactions with a number of body fluids (saliva, semen, sweat and vaginal material) and other substances (foot lotion, hair removal cream and broccoli).  相似文献   
366.
This study investigated the prevalence of loss due to death and its association with mental disorders in a random sample of 898 newly detained adolescents in Chicago, Illinois. Nearly 90% of youth experienced the loss of an important person; most had also experienced a “high‐risk” loss (e.g., loss due to violence, sudden loss). Minority youth were at particular risk. Youth with any loss or multiple losses were more likely to have mood disorders and ADHD/behavioral disorders, respectively, than youth who had no such losses. Interventions focusing on modifiable protective factors following loss may increase positive outcomes in this vulnerable population.  相似文献   
367.
368.
The pursuit of justice increasingly relies on productive interactions between witnesses and investigators from diverse cultural backgrounds during investigative interviews. To date, the role of cultural context has largely been ignored by researchers in the field of investigative interviewing, despite repeated requests from practitioners and policymakers for evidence-based guidance for the conduct of interviews with people from different cultures. Through examining cultural differences in human memory and communication and considering specific contextual challenges for investigative interviewing through the lens of culture, this review and associated commentaries highlight the scope for considering culture and human diversity in research on, and the practice of, investigative interviewing with victims, witnesses, and other sources. Across 11 commentaries, contributors highlight the importance of considering the role of culture in different investigative interviewing practices (e.g., rapport building, questioning techniques) and contexts (e.g., gender-based violence, asylum seeking, child abuse), address common areas of cultural mismatch between interviewer–interviewee expectations, and identify critical future routes for research. We call for an increased focus in the investigative interviewing literature on the nature and needs of our global community and encourage constructive and collaborative discussion between researchers and practitioners from around the world to better identify specific challenges and work together towards evidence-based solutions.  相似文献   
369.
370.
Whether 'reinvented' government implies worker empowerment, increased managerial discretion, or decentralization, it is widely thought to mean diminished accountability. A two-dimensional typology (based on clarity of goals and certainty of cause-effect knowledge) of decision-making processes and their associated organizational structures is compared to Romzek and Dubnick's typology of accountability relations. The article argues that accountability mechanisms can be matched to public problems and agency structures and that changes in perceptions concerning the nature of public problems is at the root of contemporary enthusiasm for non-hierarchical modes of organizing.  相似文献   
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