全文获取类型
收费全文 | 412篇 |
免费 | 32篇 |
专业分类
各国政治 | 31篇 |
工人农民 | 64篇 |
世界政治 | 32篇 |
外交国际关系 | 20篇 |
法律 | 188篇 |
中国政治 | 6篇 |
政治理论 | 99篇 |
综合类 | 4篇 |
出版年
2024年 | 1篇 |
2023年 | 5篇 |
2022年 | 5篇 |
2021年 | 9篇 |
2020年 | 21篇 |
2019年 | 26篇 |
2018年 | 21篇 |
2017年 | 23篇 |
2016年 | 25篇 |
2015年 | 28篇 |
2014年 | 26篇 |
2013年 | 51篇 |
2012年 | 18篇 |
2011年 | 21篇 |
2010年 | 12篇 |
2009年 | 17篇 |
2008年 | 21篇 |
2007年 | 20篇 |
2006年 | 16篇 |
2005年 | 7篇 |
2004年 | 7篇 |
2003年 | 9篇 |
2002年 | 15篇 |
2001年 | 4篇 |
2000年 | 6篇 |
1999年 | 2篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 4篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 4篇 |
1992年 | 3篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1986年 | 2篇 |
1984年 | 1篇 |
排序方式: 共有444条查询结果,搜索用时 31 毫秒
331.
Based on broad research investigating British immigrants in post-Second World War Australia, this article examines various impacts of the passing of imperialism on this group, tracing how they have been "passengers" both of national memory in Australia and more recently of their own narratives. Arguing also that British migrants have been subject on occasion to postimperial forgetting, it is emphasised here that British migrants display heterogenous constructions and negotiations of identity that may reflect new departures. 相似文献
332.
333.
Sara Sun Beale 《Criminal Law Forum》1993,4(2):307-326
Conclusion The final question raised by the Bush administration proposal is whether its adoption would inevitably undermine the general rule limiting the introduction of prior acts. Of course, the proposal is limited on its face to prior acts of rape and child sex abuse, and the arguments based on greater likelihood of repetition are by their nature applicable only to a limited class of offenses. However, the doctrine of chances argument is applicable to any offense, and it has the potential to override the traditional rules strictly limiting the introduction of prior acts evidence.This article was originally presented at the Society for the Reform of Criminal Law Conference on Reform of Evidence Law, Vancouver, British Columbia, Canada, August 3–7, 1992.B.A., University of Michigan 1971; J.D., University of Michigan 1974. 相似文献
334.
O’Kane Conor Cunningham James A. Menter Matthias Walton Sara 《The Journal of Technology Transfer》2021,46(6):1814-1844
The Journal of Technology Transfer - Previous studies have identified the importance of entrepreneurial and innovation ecosystems, however, few have considered in an integrated multi-level way, the... 相似文献
335.
Lindsay Glicksberg PhD Brittany K. Casey PhD Sara K. Dempsey PhD 《Journal of forensic sciences》2023,68(6):2093-2102
Cocaine and methamphetamine remain highly abused drugs in the United States due to their euphoric effects. This study examines classical stimulant casework, defined as cases positive for methamphetamine and/or cocaine, received by the Toxicology Laboratory and the Drug Analysis Laboratory at the Dallas County Southwestern Institute of Forensic Sciences from local law enforcement agencies and/or the Office of the Medical Examiner (OME) between January 1, 2017, and December 31, 2022. Methamphetamine positivity increased from 10.4% to 20.3% in the Toxicology Laboratory over the 6 years, whereas cocaine positivity remained relatively stable at approximately 17%. Similarly, in the Drug Analysis Laboratory, the methamphetamine positivity rate changed from 24.8% to 33.2%, whereas cocaine identification remained stable at approximately 20%. Blood concentrations of methamphetamine in OME cases ranged from 10.1–42,740.0 ng/mL while they were lower in DWI casework ranging from 10.2–2385.0 ng/mL. The blood concentration trends of cocaine were similar to methamphetamine, with OME casework ranging higher (10.0–24,501.0 ng/mL) than DWI casework (10.2–371.6 ng/mL). Polydrug use was evident for both methamphetamine and cocaine in postmortem cases, and the top three most frequently co-occurring drug/drug class were opioids/opiates, cannabinoids, and ethanol. The results from this study aid in the understanding of historical usage trends of cocaine and methamphetamine in Dallas County and how those trends have changed over time as newer stimulant drugs have emerged. 相似文献
336.
Martin-de las Heras S García-Fortea P Ortega A Zodocovich S Valenzuela A 《Forensic science international》2008,174(1):47-53
Spain is frequently the entrance country into the European Union for undocumented immigrants, especially those from the Magreb (Northern Africa). Forensic age estimates for these persons are difficult because systematic studies of dental maturity are lacking. Three different populations were analyzed to determine the pattern of development of third molars as a tool for age estimation in people of different ethnic and geographic origin. Orthopantomograms from two different populations of Spanish origin (Galicia in northwestern continental Spain, and Ceuta, a Spanish province in Northern Africa) were compared to radiographs of molars from a Magrebian population (Northern Africa) resident in Ceuta. Orthopantomograms were obtained from a private dental clinic (n=344) in Galicia and from the Public Oral Health Services (n=228) in Ceuta. We looked for differences in third molar mineralization (determined with the Demirjian scale) that might serve as age indicators (older versus younger than 18 years). Differences in maturation patterns were found between sexes and populations of origin. Mineralization of tooth 38 was more advanced in males than females among subjects 18 years of age and older in all three populations. Moreover, mineralization of tooth 38 in subjects aged 18 years and older was significantly slower in the Spanish-Galicia population than in the Magrebian-Ceuta population. We found no significant differences between Magrebian and Spanish individuals from Ceuta. We conclude that differences in tooth 38 mineralization may be related more with socio-geographical than ethnic origin (ancestry), and thus constitute evidence of the relevance of socio-geographic rather than genetic factors in third molar development. We used ROC analysis to determine the accuracy of the examiner's ability to correctly estimate age as younger or older than 18 years. The results suggest that Demirjian stage for tooth 38 can be considered a good indicator of age in all three populations. 相似文献
337.
The Optimized Summed Scored Attributes Method for the Classification of U.S. Blacks and Whites: A Validation Study 下载免费PDF全文
Michael W. Kenyhercz Ph.D. Alexandra R. Klales Ph.D. Christopher W. Rainwater M.S. Sara M. Fredette B.S 《Journal of forensic sciences》2017,62(1):174-180
Recently, Hefner and Ousley (2014) introduced the optimized summed scored attributes (OSSA) method that maximizes between‐group differences in U.S. black and white populations by dichotomizing six cranial morphoscopic trait scores. This study tests OSSA using an independent skeletal sample (Hamann‐Todd, n = 208) and positively identified forensic cases (Mercyhurst University, n = 28, and New York City Office of Chief Medical Examiner, n = 38). An evaluation of trait frequencies suggests shifting the heuristically selected sectioning point separating U.S. black and white populations from ≤ 3 to ≤ 4. We found a total correct classification of 73.0% (B = 50.9%, W = 89.2%) using the originally suggested sectioning point of ≤3, while the total correct classification increases to 79.2% (B = 80.2%, W = 78.5%) with a modified sectioning point of ≤4. With the increased total correct classification and reduced classification bias between ancestry groups, we suggest the modified sectioning point of ≤4 be used when assessing ancestry in forensic unknowns. 相似文献
338.
Intermunicipal cooperation (IMC) is often used as a mean to reap scale benefits. Most studies on the effects of IMC focus on cost savings, while service quality is overlooked. In this study, the focus is set on input quality in a service characterized by high asset specificity and need for redundancy: emergency primary care. We analyze how mode of governance affect performance by (1) measuring whether IMC versus single-municipal production affects input quality and (2) identifying optimum scale of operation; effect of the number of participants in the cooperation on input quality. The findings indicate that cooperation weakens the input quality of medical workforce, but that this negative effect is balanced out as the number of participants increases, indicating that cooperation needs to reach a certain size to achieve optimum scale of operation. Concerning equipment, both cooperation in general and an increasing number of participants decrease the input quality. 相似文献
339.