全文获取类型
收费全文 | 176篇 |
免费 | 8篇 |
专业分类
各国政治 | 8篇 |
工人农民 | 10篇 |
世界政治 | 14篇 |
外交国际关系 | 6篇 |
法律 | 100篇 |
中国政治 | 1篇 |
政治理论 | 43篇 |
综合类 | 2篇 |
出版年
2023年 | 5篇 |
2022年 | 2篇 |
2020年 | 6篇 |
2019年 | 10篇 |
2018年 | 13篇 |
2017年 | 7篇 |
2016年 | 9篇 |
2015年 | 2篇 |
2014年 | 6篇 |
2013年 | 23篇 |
2012年 | 4篇 |
2011年 | 6篇 |
2010年 | 4篇 |
2009年 | 5篇 |
2008年 | 6篇 |
2007年 | 7篇 |
2006年 | 3篇 |
2005年 | 1篇 |
2004年 | 5篇 |
2003年 | 2篇 |
2002年 | 1篇 |
2001年 | 4篇 |
2000年 | 3篇 |
1999年 | 2篇 |
1998年 | 4篇 |
1997年 | 6篇 |
1996年 | 2篇 |
1994年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 1篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1973年 | 3篇 |
1972年 | 2篇 |
1971年 | 3篇 |
1970年 | 2篇 |
1968年 | 2篇 |
排序方式: 共有184条查询结果,搜索用时 15 毫秒
1.
2.
Clete Snell Charles Bailey Anthony Carona Dalila Mebane 《American Journal of Criminal Justice》2002,26(2):269-285
Highly-publicized school shootings have heightened concern over school safety. This study examines the impact of school crimes
on campus policy. The administrators of 336 Texas middle and high schools were surveyed. Policy changes were related to parental
complaints about school crime policies and administrator perceptions that students felt less safe. School administrators should
base safety policies on strategies that have been evaluated for their effectiveness in reducing school crime and fear.
The authors wish to thank the anonymous reviewers for their helpful comments. 相似文献
3.
4.
5.
The continuing convergence of immigrants on New York City is a puzzle. On the one hand, the decline of the city's manufacturing sector and the growth of advanced services appear to provide little demand for immigrant labor; on the other hand, the deep penetration of immigrants into the city's economy has been paralleled by a deteriorating employment situation among native blacks. This article, seeks to unravel this puzzk in the light of two conflicting perspectives, the restructuring and the replacement labor hypotheses. The paper assesses each perspective using data from the 1970 and 1980 Censuses of Population and merged sampks of the June 1986 and 1988 Current Population Surveys. 相似文献
6.
OBJECTIVE: To describe the death of a toddler after a therapeutic dose of dextromethorphan and its investigation. STUDY DESIGN: Case report, cytochrome P450 phenotype and genotype determination in the victim and post-mortem drug redistribution study performed in rats. RESULTS: A 20-month Asian male who received 3 mg of dextromethorphan once at 09:00 h and again at 22:00 h was found dead at 04:35 h. Post-mortem examination showed signs of early bronchopneumonia (bacterial cultures were negative); dextromethorphan and dextrorphan blood concentrations taken from the heart cavity were 500 ng/ml (1. 84 micromol/l) and 200 ng/ml (0.78 micromol/l), respectively. Despite the dextromethorphan level being almost 100-fold higher than expected after therapeutic doses, intentional or unintentional overdose was extremely unlikely; other potential causes were investigated. Post-mortem drug redistribution study performed in rats showed that dextromethorphan does not undergo extensive redistribution after death (6+/-5-fold increase) and could not explain the observed dextromethorphan level. The dextromethorphan/dextrorphan concentration ratio of 2.5 found in this toddler was compatible with a slow CYP2D6 metabolizer phenotype. However, the toddler exhibited a fast metabolizer genotype. Potential reasons for this discrepancy are discussed. CONCLUSION: CYP450 phenotypes derived from post-mortem blood levels should be interpreted with caution and preferably confirmed by a genotype analysis. 相似文献
7.
8.
9.
The empowerment of disputants is a fundamental concern of mediation research, but empowerment is difficult to measure. This study operationally defines empowerment in a divorce case as an agreed-upon modification of the Texas Standard Possession Order in the direction of granting more time with the child to the noncustodial parent. Using a cross-case analysis of mediated and nonmediated divorce cases, this study found that couples that participated in mediation were empowered, not disempowered, in the construction of their visitation arrangements. Implications for measuring empowerment, litigation, and legislative policy are discussed. 相似文献
10.
Malika Abdelali-Martini Patricia Goldey Gwyn Jones Elizabeth Bailey 《The Journal of peasant studies》2013,40(2):71-94
Smallholdings in the rural areas of northwest Syria are a result of land fragmentation that is due to inheritance. Because of rapid population growth combined with land fragmentation, these smallholdings are increasing and cannot sustain the rural households whose sizes and needs are also increasing rapidly This situation has led to increasing numbers of males migrating to urban areas in Syria and to neighbouring countries looking for work opportunities. In addition, recent agricultural intensification trends seem to have led to the emergence of a waged labour force which, in the absence of male workers owing to significant rates of migration, is now predominantly female. Agricultural labour use depends upon household characteristics and resources (type of labour used, gender of labour waged/exchanged/familial). The article attempts to present a comprehensive analysis of household labour use in distinctive farming systems in one region of Syria that has undergone great change in recent decades, and examines the changes in the composition of the agricultural labour force. Secondary information, rapid ural appraisals and formal farm surveys were used to gather information on the households in a study area where different farming systems coexist. The results show that the decrease in landholding size, the resulting male migration, and land intensification have resulted in the expansion offemale labour in agriculturalproduction, which has been termed in this research a 'feminization of agricultural labour'. This suggests that agricultural research and extension services will have to work more with women farmers and farm workers, seek their wisdom and involve them in technology and transfer. This is not easy in conservative societies but requires research and extension institutions to take this reality into consideration in their programmes. 相似文献