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   10564篇
  免费   293篇
各国政治   397篇
工人农民   378篇
世界政治   710篇
外交国际关系   285篇
法律   6704篇
中国政治   67篇
政治理论   2227篇
综合类   89篇
  2020年   103篇
  2019年   155篇
  2018年   190篇
  2017年   218篇
  2016年   213篇
  2015年   162篇
  2014年   183篇
  2013年   941篇
  2012年   215篇
  2011年   264篇
  2010年   212篇
  2009年   266篇
  2008年   268篇
  2007年   269篇
  2006年   262篇
  2005年   242篇
  2004年   234篇
  2003年   242篇
  2002年   235篇
  2001年   423篇
  2000年   366篇
  1999年   294篇
  1998年   158篇
  1997年   122篇
  1996年   136篇
  1995年   132篇
  1994年   133篇
  1993年   134篇
  1992年   232篇
  1991年   251篇
  1990年   240篇
  1989年   248篇
  1988年   225篇
  1987年   223篇
  1986年   262篇
  1985年   256篇
  1984年   229篇
  1983年   214篇
  1982年   151篇
  1981年   127篇
  1980年   113篇
  1979年   151篇
  1978年   85篇
  1977年   111篇
  1976年   95篇
  1975年   71篇
  1974年   89篇
  1973年   83篇
  1972年   78篇
  1971年   69篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
331.
B. R. Giri 《亚洲事务》2013,44(3):353-364
On the fiftieth anniversary of the Tibetan Uprising of 1959, this impassioned article examines the origins of the Uprising and the subsequent course of events. It describes the current situation, discusses the role of the Dalai Lama and examines his pronouncements, as well as trying to explain Chinese attitudes to the Dalai Lama, to Tibet and towards Tibetans. The author comes to a pessimistic conclusion: other countries are not prepared to stand up to China and Tibetan culture is being steadily destroyed by a flood of Han Chinese settlers.  相似文献   
332.
333.
334.
The issue of outcome assessment is receiving increased attention in the area of higher education, generally, and in the fields of public and business administration, more specifically. A variety of methodologies are available for such assessments. This article argues that survey methodology is the most appropriate approach and presents a model for designing survey-based outcome assessments. In addition, an example of the application of survey methods for outcome assessment of a unique graduate level management education program is presented.  相似文献   
335.
The purpose of this article is to expose the part played by Canadian imperialism in Honduras before and after the military overthrow of democratically elected Honduran President Manuel Zelaya, on 28 June 2009. It draws attention to the neglected role of the Canadian state's efforts to protect the interests of Canadian capital in Honduras and Latin America more generally through the constant undermining of Zelaya's attempts to return to his legitimate office, and in the ultimate consolidation of the coup under Porfirio ‘Pepe’ Lobo in early 2010. The article simultaneously develops a critique of what has become the standard account of the Honduran coup of 2009. We show how Zelaya was neither a puppet of Venezuelan President Hugo Chávez, nor an autocrat seeking to entrench his power indefinitely through illegal constitutional reform when he was violently tossed out of government.  相似文献   
336.
337.
338.
Postmortem computed tomography (PMCT) is integrated into the evaluation of decedents in several American medical examiner offices and medicolegal death investigative centers in many other countries. We retrospectively investigated the value of PMCT in a series of firearm homicide cases from a statewide centralized medical examiner’s office that occurred during 2016. Autopsies were performed or supervised by board-certified forensic pathologists who reviewed the PMCT scans prior to autopsy. PMCT scans were re-evaluated by a forensic radiologist blinded to the autopsy findings and scored by body region (head–neck, thoracoabdominal, and extremities). Injury discrepancies were scored using a modified Goldman classification and analyzed with McNemar’s test. We included 60 males and 20 females (median age 31 years, range 3–73). Based on PMCT, 56 (79.1%) cases had injuries relevant to the cause of death in a single body region (24 head–neck region, 32 thoracoabdominal region). Out of these 56 cases, 9 had a missed major diagnosis by PMCT outside that region, including 6 extremity injuries visible during standard external examination. Yet all had evident lethal firearm injury. We showed that PMCT identifies major firearm injuries in homicide victims and excludes injuries related to the cause of death in other regions when a single body region is injured. Although PMCT has a known limited sensitivity for soft tissue and vascular pathology, it can be combined with external examination to potentially reduce or focus dissections in some of these cases depending on the circumstances and medicolegal needs.  相似文献   
339.
This paper examines the reliability of Structure from Motion (SfM) photogrammetry as a tool in the capture of forensic footwear marks. This is applicable to photogrammetry freeware DigTrace but is equally relevant to other SfM solutions. SfM simply requires a digital camera, a scale bar, and a selection of oblique photographs of the trace in question taken at the scene. The output is a digital three-dimensional point cloud of the surface and any plastic trace thereon. The first section of this paper examines the reliability of photogrammetry to capture the same data when repeatedly used on one impression, while the second part assesses the impact of varying cameras. Using cloud to cloud comparisons that measure the distance between two-point clouds, we assess the variability between models. The results highlight how little variability is evident and therefore speak to the accuracy and consistency of such techniques in the capture of three-dimensional traces. Using this method, 3D footwear impressions can, in many substrates, be collected with a repeatability of 97% with any variation between models less than ~0.5 mm.  相似文献   
340.
Postmortem magnetic resonance imaging (MRI) is rarely used for the radiologic assessment of gunshot injuries, although it has clear advantages over postmortem computed tomography (CT) with regard to the imaging of soft tissue injuries. Another benefit in using MRI is that lodged projectiles composed of nonferromagnetic material such as lead present only marginal metal artifacts compared with severe artifacts on CT. This case report presents CT and MRI findings in a case with two gunshot wounds to the neck: a perforating wound and a nonperforating wound with a lead bullet lodged in the cervical spine. The decedent underwent CT and MRI before the scheduled autopsy. A ring of radiopaque material under the dermis in the fatty tissue was identified at both entrance wounds on CT, which was indicative of contact shots. The perforating gunshot was clearly indicated on CT by bullet fragments along the wound channel through the perforated 6th cervical vertebra and the fractured cricoid cartilage at the exit wound. The second trajectory, however, was only assumed based on the presence of gunshot residues at the entrance wound and the position of the lodged bullet. The radiologic assessment was severely impeded by the metal artifacts on CT. Barely noticeable metal artifacts on MRI allowed for clear visualization of the soft tissue injuries and the ruptured medulla oblongata. Only MRI clarified the soft tissue injuries of the brainstem noninvasively, which could provide specific and graphic information on the rapidity of death and the incapacitation of the victim.  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