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   153篇
  免费   12篇
各国政治   12篇
工人农民   1篇
世界政治   15篇
外交国际关系   10篇
法律   93篇
政治理论   34篇
  2023年   2篇
  2022年   2篇
  2021年   1篇
  2020年   4篇
  2019年   5篇
  2018年   10篇
  2017年   9篇
  2016年   7篇
  2015年   10篇
  2014年   8篇
  2013年   31篇
  2012年   7篇
  2011年   4篇
  2010年   5篇
  2009年   7篇
  2008年   7篇
  2007年   8篇
  2006年   4篇
  2005年   9篇
  2004年   6篇
  2003年   2篇
  2002年   3篇
  2001年   1篇
  2000年   3篇
  1998年   1篇
  1997年   1篇
  1995年   1篇
  1994年   1篇
  1993年   1篇
  1986年   1篇
  1983年   1篇
  1970年   1篇
  1967年   1篇
  1962年   1篇
排序方式: 共有165条查询结果,搜索用时 31 毫秒
151.
In this paper, we will investigate the popularity of marriage migration between Turkish communities in Western Europe and emigration regions in Turkey. Our focus here is specifically on the Belgian case, namely the ‘Emirdag connection’. In Belgium, the majority of immigrants with a Turkish background come from the region of Emirdag, in the province of Afyon. On the basis of quantitative research methodologies, we first consider the magnitude of the phenomenon and the socio-economic situation of those involved. Using the qualitative research techniques of participant observation and in-depth interviews, we analyze the mechanisms in an attempt to explain marriage migration between these regions. Why do so many young people, born and raised in Western Europe, opt for an unknown partner from a region that is largely unknown to them but which proves to be their parents', or even grandparents', region of origin? Why does migration remain such a valuable life project for many young people in these regions of origin, despite the real danger of many negative side effects? The popularity of marriage migration is often explained by its role in making migration possible. However, migration theories alone cannot explain this phenomenon. Here we will argue that the existence of a ‘culture of migration’ that binds the region of origin with the region of destination and in which ‘the family’ as an institution is capable of building a bridge between traditional praxis, as well as the challenges linked to international migration, are crucial for understanding the enduring popularity of marriage migration.  相似文献   
152.
A lack of communication between care workers, police officers, judicial officials and medical professionals can obstruct a fast and efficient approach of child abuse. This problem inspired a pilot project called ‘the Courage Protocol’, which was introduced as an experiment in the legal district of Antwerp, Flanders (Belgium). The most important novelty in this project is the case-based deliberation between care workers, medical professionals and judiciary officials, as this implies an actual encounter between these representatives in which relevant information is shared and possible ways to approach specific cases are discussed. Based on a scientific evaluation of this deliberative practice, this article discusses its potential as an innovative way of cooperation between justice and care.  相似文献   
153.
154.
In 2002 the Dutch Euthanasia Act came into force. This Act is the result of a lengthy developmental process. It codifies the requirements that have evolved in case law and medical ethics since 1973. Empirical data indicate that the Dutch euthanasia practice is stabilising. Euthanasia and assisted suicide occur in 2.7% of all deaths. Now that the Act has been passed, the focus is on improving the quality of medical decision-making. From an international perspective, the Dutch legislation is exceptional. However, it appears that other countries and international organisations are considering euthanasia legislation as well. It remains to be seen how influential the Dutch model will prove to be.  相似文献   
155.
Although saliva or oral fluid "lacks the drama of blood, the sincerity of sweat and the emotional appeal of tears", quoting Mandel in 1990 [I.D. Mandel, The diagnostic uses of saliva, J. Oral Pathol. Med. 19 (1990) 119-125], it is now meeting the demand for inexpensive, non-invasive and easy-to-use diagnostic aids for oral and systemic diseases, drug monitoring and detection of illicit use of drugs of abuse, including alcohol. As the salivary secretion is a reflex response controlled by both parasympathetic and sympathetic secretomotor nerves, it can be influenced by several stimuli. Moreover, patients taking medication which influences either the central nervous system or the peripheral nervous system, or medication which mimic the latter as a side effect, will have an altered salivary composition and salivary volume. Patients suffering from certain systemic diseases may present the same salivary alterations. The circadian rhythm determines both the volume of saliva that will and can be secreted and the salivary electrolyte concentrations. Dietary influences and the patient's age also have an impact on composition and volume of saliva. The latter implies a wide variation in composition both inter- and intra-individually. Sampling must therefore be performed under standardized conditions. The greatest advantage, when compared to blood sample collection, is that saliva is readily accessible and collectible. Consequently, it can be used in clinically difficult situations, such as in children, handicapped and anxious patients, where blood sampling could be a difficult act to perform.  相似文献   
156.
A micellar electrokinetic chromatography (MEKC) method was optimised for simultaneous analysis of gamma-hydroxybutyric acid (GHB), gamma-butyrolactone (GBL), and 1,4-butanediol (BD). Best conditions for separation and baseline stability were achieved using a carrier electrolyte comprising 30.0mM sodium barbital and 150.0mM sodium dodecyl sulphate (SDS) at pH 10.2. Calibration functions were linear, giving correlation coefficients (r(2)) >0.998 for the three target compounds. Limits of detection (LOD) defined as three times the noise, were 5.1mg/l, 0.34 and 0.25g/l for GHB, GBL and BD, respectively. The repeatability of migration times and peak areas, expressed as the R.S.D. (n = 9) was better than 0.41 and 3.05%, respectively. Some casework samples were analysed using the optimised conditions.  相似文献   
157.
158.
159.
Johan P. Olsen 《管理》2015,28(4):425-440
Accountability is a principle for organizing relations between rulers and ruled, and making public officials accountable is a democratic achievement. There are, however, competing claims about what is involved in demanding, rendering, assessing, and responding to accounts; what are effective accountability institutions; and how accountability regimes emerge and change. This article provides a frame for thinking about institutional aspects of accountability regimes and their cognitive, normative, and power foundations. A distinction is made between accountability within an established regime with stable power relations and role expectations and accountability as (re)structuring processes in less institutionalized contexts and in transformation periods. A huge literature is concerned with the first issue. There is less attention to accountability as (re)structuring processes. The article, therefore, calls attention to how democracies search for, and struggle over, what are legitimate accountability regimes and political orders.  相似文献   
160.
Fatal intoxications with opioids are known to be associated with an increased lung weight, as well as with brain and pulmonary edema and urinary retention. However, there is evidence to suggest that fatal intoxications with non-opioid substances are also associated with increased lung weight; however, the latter aspect has not been comprehensively analyzed. To determine to what extent opioid and non-opioid substances are associated with increased lung and brain weight, we studied these organs in cases where the cause of death was attributed to intoxication with a single agent. Using data from cases autopsied at the National Board of Forensic Medicine (NBFM) in Sweden from 2009 through 2019 where the cause of death was attributed to a single substance, we created models of combined lung weight and brain weight. The models used age and sex as predictors as well as nested varying effects for the specific intoxicant and category of intoxicant. Suicidal hanging with negative toxicology cases served as controls. The population majority was male among both intoxications (68%) and controls (83%). The most common single substance group was opioids. All tested substances were associated with heavier lungs than controls, with the largest effect in the opioid group. Our findings show that several substances are associated with increased lung weight and that among intoxication deaths there is no difference in expected brain weight between substances. Hence, heavy lungs, without a reasonable explanation, should prompt a broad toxicological screening.  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