全文获取类型
收费全文 | 914篇 |
免费 | 62篇 |
专业分类
各国政治 | 12篇 |
工人农民 | 34篇 |
世界政治 | 24篇 |
外交国际关系 | 32篇 |
法律 | 450篇 |
中国共产党 | 30篇 |
中国政治 | 103篇 |
政治理论 | 51篇 |
综合类 | 240篇 |
出版年
2023年 | 10篇 |
2022年 | 6篇 |
2021年 | 15篇 |
2020年 | 14篇 |
2019年 | 19篇 |
2018年 | 24篇 |
2017年 | 21篇 |
2016年 | 39篇 |
2015年 | 20篇 |
2014年 | 41篇 |
2013年 | 75篇 |
2012年 | 64篇 |
2011年 | 59篇 |
2010年 | 49篇 |
2009年 | 48篇 |
2008年 | 53篇 |
2007年 | 56篇 |
2006年 | 63篇 |
2005年 | 58篇 |
2004年 | 62篇 |
2003年 | 56篇 |
2002年 | 43篇 |
2001年 | 33篇 |
2000年 | 13篇 |
1999年 | 7篇 |
1998年 | 1篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1993年 | 5篇 |
1991年 | 3篇 |
1989年 | 4篇 |
1988年 | 1篇 |
1987年 | 3篇 |
1986年 | 3篇 |
1983年 | 1篇 |
排序方式: 共有976条查询结果,搜索用时 15 毫秒
871.
“绿屋会议”作为WTO非正式决策机制的重要代表,在WTO决策机制的运行历史中曾经起到了重要作用,使得多边谈判的效率得到了最大程度的提高。其前身G18对推动GATS、TRIMS和TPIPS谈判的达成即明证[1]。尽管在提高WT0决策效率上有目共睹,绿屋却因为对参与成员方的有限选择,对大多数成员方的强制排除,以及决策程序不透明等因素而受到广泛诟病,甚至获得了“黑屋”之名[2]。而绿屋会议本身又是作为WTO非正式决策制度而在wT0法律体系之外发挥作用,其存留与否以及改革方向对于WTO决策制度的效用发挥乃至新一轮多边体系的建立所起的影响可谓至关重要。 相似文献
872.
Connie L. Parks M.A. 《Journal of forensic sciences》2011,56(1):19-22
Abstract: Decomposition studies utilizing nonhuman subjects as human analogues are well established, but fewer studies utilizing intact human remains exist. This study provides data from a controlled decomposition study involving human remains in Central Texas. A 63.5‐kg unmodified cadaver was placed in an open‐air site and observed over a 10‐week period from April 11 through June 19, 2008. A wire enclosure restricted scavenger access. State of decomposition and environmental conditions were recorded daily for the first 36 days and then every 2 weeks thereafter. Results indicated a high degree of correlation with other decomposition studies originating in the southwestern United States, although slight deviations for the average duration of early events were noted. The data were also utilized to test a quantitative method for estimating the postmortem interval. Results indicated preliminary support for a quantitative approach. Additional research is encouraged to further establish the human decomposition data set for Central Texas. 相似文献
873.
874.
Armin Alibegović M.D. Ph.D. Jože Balažic M.D. Ph.D. Danijel Petrovič M.D. Ph.D. Gorazd Hribar Ph.D. Rok Blagus Ph.D. Matej Drobnič M.D. Ph.D. 《Journal of forensic sciences》2014,59(2):522-528
Different studies of long‐term chondrocytes viability have shown a gradual reduction as a function of time and ambient temperature. The aim of our in vitro study was to establish chondrocyte postmortem viability curves for 4°C, 11°C, 23°C, 35°C during 63 days after the donors' death. Osteochondral cylinders were procured from the knees of 16 male donors (20–47 years), stored in preservation media that was not changed, and analyzed in 3‐day intervals using a confocal laser scanning microscope. A significant influence of time on viability was found from Day 9 (p = 0.0029) and onwards (p < 0.0001). The lowest overall chondrocyte viability was at 35°C, followed by 4°C (p < 0.0001). The conditions used in this in vitro analysis suggest that similar viabilities may occur while in situ in the decedent. Further studies of chondrocyte viability from individuals with known postmortem intervals may show premise to help evaluate time since death in the late postmortem interval. 相似文献
875.
Crispino E.G. Akakpo Patti T. Lenard 《Critical Review of International Social and Political Philosophy》2014,17(5):493-502
Normative political theory over recent decades has focused mainly on what ought to be done as far as migration policies are concerned. It faces a basic challenge, which stems from two competing, yet equally fundamental, ideals underpinning liberal democratic societies: a commitment to moral universalism and the exclusionary requirement of democracy. The objective of this special issue, ‘New Challenges in Immigration Theory’, is to provide a conceptual overview of (some) immigration theories and to highlight the challenges new streams of immigration pose for normative (political) theory and liberal democratic practice. The issue will consider how to reconcile state-based exclusion with a commitment to equal moral concern for all persons, by focusing on the non-standard immigration questions that have so far been ‘neglected’ by normative political theory. In line with this objective, the issue will discuss some of the inadequacies of the dominant political theories of immigration and show how such theories can be expanded to take account of new migration challenges such as brain drain, climate migration, detention of irregular migrants and asylum seekers, rights of labour migrants, transnational networks of movement, and so on. 相似文献
876.
目的建立大鼠皮肤损伤核磁共振(nuclear magnetic resonance,NMR)检测方法,探讨其在法医学中应用的意义。方法雄性SD大鼠36只,随机分为皮肤切创和挫伤组,分别在大鼠背部制作皮肤切创和挫伤,各组分别在损伤后0h、4h、8h取皮肤组织及对侧无损伤部位皮肤,检测NMR一维1H谱,观察受创皮肤的分子代谢产物随损伤时间的变化规律。结果挫伤组、切创组背部损伤处皮肤的1H-NMR图谱在损伤后4h和8h分别检测到较多NMR波峰,波峰的高度和总面积也发生了改变,与对照部位皮肤相比,存在显著性差异(P〈0.05)。结论核磁共振技术检测组织代谢产物有望用于损伤经过时间的法医学检验。 相似文献
877.
Carolyn Bate Katie Dhingra Christopher Bale 《The journal of forensic psychiatry & psychology》2014,25(5):600-612
This study examined the relationships between psychopathy (primary and secondary), intelligence and emotional responding in a sample of 50 university students, using a task measuring autonomic responses to 40 pictorial stimuli (20 neutral and 20 emotionally provoking). Results indicated no significant direct relationship between primary or secondary psychopathy and emotional response, or primary or secondary psychopathy and intelligence. However, a significant moderating effect of intelligence on the association between both psychopathy factors and emotional response was observed, indicating those scoring higher on psychopathy but with lower intelligence portray the expected emotional responses to the affective stimuli (primary: β?=??.56, p?.05; secondary: β?=?.80, p?<?.001). These findings indicate abnormal reactivity to emotional stimuli in lower intelligence, higher psychopathic individuals, and suggest differing roles for the two facets of psychopathy in affective responsiveness deviations. 相似文献
878.
Armin Alibegović M.D. Ph.D. Jože Balažic M.D. Ph.D. Danijel Petrovič M.D. Ph.D. Nevenka Kregar Velikonja Ph.D. Rok Blagus Ph.D Dušan Šuput M.D. Ph.D. Matej Drobnič M.D. Ph.D. 《Journal of forensic sciences》2012,57(6):1601-1607
Abstract: Most studies of long‐term chondrocytes survival were for tissue banks. They showed a gradual reduction in the viable chondrocytes percentage as a function of time and ambient temperature, but the samples were harvested under optimal conditions. The aim of our study was to determine the most reliable combination of cartilage source and assay for the in vitro postmortem chondrocyte viability analysis in the conditions that imitate a dead body. Osteochondral cylinders were procured from femoral condyles and talar trochleas of three male donors and stored in the cell culture media at 4 ± 2°C and 23 ± 2°C. The samples were analyzed by a cell viability analyzer and a confocal laser scanning microscope (CLSM) initially 24–36 h after death and then in 4‐week intervals. The results reconfirmed the significant influence of time (p = 0.0002), but not of the temperature (p = 0.237). The largest reproducibility was presented for the knee joint and the CLSM. 相似文献
879.
A screening assay has been developed to provide preliminary individualization of crime scene samples thus eliminating expensive, time-consuming short tandem repeat (STR) profiling of nonprobative samples. High resolution melting performed in a real-time PCR instrument is used to detect the slight melting differences between the length and sequence variations of 22 forensic STRs. Three STRs (vWA, D18S51, THO1) were chosen to develop an assay which was optimized for Mg++ concentration, annealing/extension time/temperature, assay volume, and bovine serum albumin addition. The assay was tested for reproducibility, uniformity for genotype, melting profile consistency, effects of inhibitors, and mixture effects. The assay could be used to determine DNA concentration when a standard curve is run simultaneously. Calculations of costs show that the assay can save significant time and money for a crime with many samples or suspects. 相似文献
880.
《Justice Quarterly》2012,29(4):540-559
Contemporary police practice advocates the importance of proactive policing activities. Proactive policing reforms emphasize self‐initiated tasks during unassigned patrol time and directed activities based on supervisor review of crime analysis and problem identification. Our study analyzes data from systematic social observations of police patrol officers to examine how officers spent their discretionary time. We find that, on average, over three quarters of a patrol officers’ shift is unassigned. During this time, officers primarily self‐initiate routine patrol, or back up other officers on calls to which they were not dispatched. Just 6 percent of unassigned time activities are directed by supervising officers, dispatchers, other officers or citizens. Moreover, directives provided by supervisors are vague, general in form, and do not operationalize problem‐oriented policing, community‐oriented policing, or proactive policing strategies. We conclude that first, a very significant proportion of patrol officer time is spent uncommitted that could be better utilized doing proactive, problem‐oriented policing activities, and second, supervisors need to provide patrol officers with much more detailed directives, based on sound crime analysis, to help capitalize on the under‐utilization of patrol officer time. 相似文献