全文获取类型
收费全文 | 6153篇 |
免费 | 236篇 |
专业分类
各国政治 | 249篇 |
工人农民 | 268篇 |
世界政治 | 465篇 |
外交国际关系 | 317篇 |
法律 | 3764篇 |
中国共产党 | 1篇 |
中国政治 | 39篇 |
政治理论 | 1241篇 |
综合类 | 45篇 |
出版年
2023年 | 54篇 |
2022年 | 28篇 |
2021年 | 41篇 |
2020年 | 102篇 |
2019年 | 137篇 |
2018年 | 168篇 |
2017年 | 169篇 |
2016年 | 179篇 |
2015年 | 120篇 |
2014年 | 164篇 |
2013年 | 637篇 |
2012年 | 178篇 |
2011年 | 195篇 |
2010年 | 142篇 |
2009年 | 183篇 |
2008年 | 175篇 |
2007年 | 168篇 |
2006年 | 169篇 |
2005年 | 131篇 |
2004年 | 150篇 |
2003年 | 146篇 |
2002年 | 126篇 |
2001年 | 239篇 |
2000年 | 235篇 |
1999年 | 165篇 |
1998年 | 78篇 |
1997年 | 77篇 |
1996年 | 64篇 |
1995年 | 75篇 |
1994年 | 64篇 |
1993年 | 66篇 |
1992年 | 129篇 |
1991年 | 115篇 |
1990年 | 142篇 |
1989年 | 131篇 |
1988年 | 143篇 |
1987年 | 134篇 |
1986年 | 112篇 |
1985年 | 111篇 |
1984年 | 84篇 |
1983年 | 73篇 |
1982年 | 57篇 |
1981年 | 51篇 |
1980年 | 43篇 |
1979年 | 53篇 |
1978年 | 38篇 |
1976年 | 32篇 |
1975年 | 28篇 |
1974年 | 40篇 |
1973年 | 32篇 |
排序方式: 共有6389条查询结果,搜索用时 31 毫秒
991.
AbstractIt is now accepted that to have an understanding of housing affordability one must consider not only housing costs, but also the transportation costs associated with that household location. To make this information readily accessible to the public, the United States government created an Internet resource, the Location Affordability Portal – Version 2 (www.locationaffordability.info), to provide housing and transportation costs for every neighborhood in all 50 states and the District of Columbia. Although the statistical model at the heart of this resource was designed for predictive accuracy, its design and parameter estimates can provide additional insights into the interaction of housing cost and transportation choices (and thus its cost). This study describes the development and explores the policy implications (and limitations) of this structural equations model, the Location Affordability Index Model – Version 2 (LAIM2). 相似文献
992.
Enhancing Precision and Clarity in the Study of Policy Narratives: An Analysis of Climate and Air Issues in Delhi,India
下载免费PDF全文
![点击此处可从《政策研究评论》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Christopher M. Weible Kristin L. Olofsson Daniel P. Costie Juniper M. Katz Tanya Heikkila 《政策研究评论》2016,33(4):420-441
The study of policy narratives is challenged by inconsistencies and a need for more precise definitions and measurements. The goals of this article are to build precision and clarity in the study of policy narratives by developing a network‐based approach—the ego‐alter dyad—for coding characters and their interactions around a policy issue and then to illustrate this approach in the analysis of air and climate issues in Delhi, India. The empirical results show that (1) the same actors are often heroes and villains, (2) heroes and villains are associated with different actions but with similar victims or beneficiaries, (3) narrators differ in their propensity to tell hero‐heavy or villain‐heavy policy narratives, and (4) the proportion of hero‐heavy or villain‐heavy policy narratives changes over time and differs across subtopics. The article concludes with a research agenda for further theoretical and methodological advancement in studying policy narratives. 相似文献
993.
Christopher K. Lamont 《Journal of Intervention and Statebuilding》2016,10(3):382-399
ABSTRACTThis contribution reflects upon the nexus between transitional justice and peacebuilding through a study of how transitional justice practices in post-Qadhafi Libya interacted with broader efforts to establish governance institutions in the aftermath of Libya’s 2011 armed conflict. It argues that dominant practices of transitional justice, promoted by external actors, prescribed narrow state-centric justice interventions that were ill-suited for a polity in which the state was highly contested. In fact, transitional justice proved divisive in Libya because attempts to project state-centric liberal justice practices were limited by their targeting of weak institutions that lacked local legitimacy and their inability to reconcile alternative normative frameworks that challenge the modern state. In addition, the weakness of Libya’s state institutions allowed thuwwar, or revolutionary armed groups, to dictate an exclusionary form of justice known as political isolation. Drawn from fieldwork conducted in Libya, this contribution provides lessons for both peacebuilding and transitional justice practice that call for a rethinking of teleological notions of transition and greater engagement with notions and concepts that fall outside dominant practices. 相似文献
994.
995.
This article presents a critical comparison of the ongoing peace processes in the southern Philippines and Myanmar (Burma). It does so by examining two key armed groups: the Moro Islamic Liberation Front (MILF) on Mindanao, and the Karen National Union (KNU) in Myanmar. We identify common elements that help to explain the relative – albeit incomplete – success of these two groups in navigating their respective peace processes. The MILF and KNU are ethnonationalist armed groups struggling for self-determination against states that are experienced by ethnic minority communities as culturally alien, and economically and politically dominant. Both conflict actors are characterized by complex combinations of “greed” and “grievance” factors but nevertheless enjoy significant (albeit contested) political legitimacy among the communities they seek to represent. We explore the complex relationships between armed ethnic groups, conflict-affected communities, and civil society actors. We argue that engagement with civil society is a key element of success in the Mindanao peace process, which could be replicated in Myanmar. We examine the roles and changing nature of the state in the Philippines and Myanmar, and contrast the degrees of international involvement, as key variables in these peace processes. We observe that negotiations of comprehensive peace settlements are threatened by “the tyranny of elections” in Myanmar (2015) and the Philippines (2016), and observe the importance of including national parliaments in peace processes in a timely manner. The peace process between Manila and the MILF represents a rare example of a Muslim minority pursuing its political objectives through structured dialogue. The article focuses on the challenges faced by armed groups moving from insurgency to reinvent themselves as credible political actors and governance authorities. Our analysis draws on peace-building literature, specifically the phenomenon of “rebel governance.” 相似文献
996.
Louisa J. Baillie B.H.Sc. B.F.A. Jillian C. Muirhead D.M.I.T. Phil Blyth B.H.B. M.B.Ch.B. Ph.D. Brian E. Niven B.Sc. M.Sc. George J. Dias B.B.S. M.S. Ph.D. 《Journal of forensic sciences》2016,61(Z1):S60-S70
The head is positioned erect for an approximation; yet most facial soft tissue depths (FSTD) used are measured from supine subjects. Depth difference might be significant, but there is a paucity of data to verify. This study compared erect and supine values for 17 landmarks from 30 healthy New Zealand (European population affinity) women (18–30 or 40–55 years) in erect then supine positions. Height, weight, and sonographic FSTD data, totaling 1020 measurements, were obtained. Three midline and seven averaged bilateral values were compared using ANOVA, p values, and Pearson's correlations. Correlative strength of age and body mass index, BMI (kg/m2), was determined by values. Results showed averaged erect and supine differences were significant for four of ten FSTDs. Between individuals, difference was various and not unidirectional. In conclusion, depth differences were observed but not all significant or unidirectional, BMI significantly influenced nine FSTD values, but age group did not. 相似文献
997.
Dane T. Plaza B.S. Jamia L. Mealy M.F.S. J. Nicholas Lane M.S.F.S. M. Neal Parsons M.S. Abigail S. Bathrick M.F.S. Donia P. Slack M.S. 《Journal of forensic sciences》2016,61(2):485-488
In forensic science, biological material is typically collected from evidence via wet/dry double swabbing with cotton swabs, which is effective but can visibly damage an item's surface. When an item's appearance must be maintained, dry swabbing and tape‐lifting may be employed as collection techniques that are visually nondestructive to substrates' surfaces. This study examined the efficacy of alternative swab matrices and adhesive lifters when collecting blood and fingerprints from glass, painted drywall, 100% cotton, and copy paper. Data were evaluated by determining the percent profile and quality score for each STR profile generated. Hydraflock® swabs, BVDA Gellifters®, and Scenesafe FAST? tape performed as well as or better than cotton swabs when collecting fingerprints from painted drywall and 100% cotton. Collection success was also dependent on the type of biological material sampled and the substrate on which it was deposited. These results demonstrated that alternative swabs and adhesive lifters can be effective for nondestructive DNA collection from various substrates. 相似文献
998.
Erwin J. A. T. Mattijssen M.Sc. Ivo Alberink Ph.D. Suzanne D. Brouwer M.Sc. Wim Kerkhoff 《Journal of forensic sciences》2016,61(3):765-772
When a bullet ricochets from wood, various parameters will influence its behavior. In this study, the influence of the wood grain on the ricochet angle (β) and deflection angle (γ) is assessed. Series of five .32 Auto bullets were fired at different angles of incidence (α) on boards of six wood types. The results confirm the previously shown effect that the mean β‐angles usually exceed α and increase when α increases. Overall, the maximum mean γ occurs when the angle of wood grain (ζ), in relation to the plane of impact, lies between 30° and 75° but differs per combination of wood and α. The results show the inclination of γ toward the left or right, depending on the bullets left or right rotation while also showing that the direction of ζ can enhance or counteract this effect considerably, especially when α is close to the critical ricochet angle. 相似文献
999.
Taphonomic Patterning of Cemetery Remains Received at the Office of the Chief Medical Examiner,Boston, Massachusetts
下载免费PDF全文
![点击此处可从《Journal of forensic sciences》网站下载免费的PDF全文](/ch/ext_images/free.gif)
James T. Pokines Ph.D. Debra Prince Zinni Ph.D. Kate Crowley D.M.D. 《Journal of forensic sciences》2016,61(Z1):S71-S81
A sample of 49 cases of cemetery remains received at the Office of the Chief Medical Examiner, Massachusetts (OCME‐MA), in Boston was compared with published taphonomic profiles of cemetery remains. The present sample is composed of a cross section of typical cases in this region that ultimately are derived from modern to historical coffin burials and get turned over to or seized by law enforcement. The present sample was composed of a large portion of isolated remains, and most were completely skeletonized. The most prevalent taphonomic characteristics included uniform staining (77.6%), coffin wear (46.9%), and cortical Exfoliation (49.0%). Other taphonomic changes occurring due to later surface exposure of cemetery remains included subaerial weathering, animal gnawing, algae formation, and excavation marks. A case of one set of skeletal remains associated with coffin artifacts and cemetery offerings that was recovered from transported cemetery fill is also presented. 相似文献
1000.
Suicide by shotgun is a common method of suicide with high regional variation. We sought to describe their distinct, challenging features and provide demographic and risk characteristics. We reviewed 228 gunshot wounds autopsied at Mayo Clinic from 1994 to 2014; of these, 75 (32.9%) were shotgun wounds. All were suicides and contact range. Ages ranged from 14 to 92 years old; of these, 97% were men. The majority involved the head (70.9%), were intraoral (48.2%), and had upward (73.2%) and backward (73.2%) directionality. Next most common was the chest (21.5%), with backward (94.1%) and downward (64.7%) directionality. Four involved multiple wounds. Wadding was recovered in 16 (21.3%) cases. Six (8.0%) had a survival period. Most (66.7%) took place at home. Seventy‐one percent had a known psychiatric history; 32.4% had positive toxicology. Although contact range shotgun wounds cause severe destruction, entrance wound and other characteristic are identifiable with thorough scene, autopsy, and radiographic documentation. 相似文献