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   88篇
  免费   5篇
  2023年   1篇
  2020年   3篇
  2019年   5篇
  2018年   9篇
  2017年   3篇
  2016年   12篇
  2015年   3篇
  2014年   6篇
  2013年   23篇
  2011年   1篇
  2010年   2篇
  2009年   2篇
  2008年   1篇
  2006年   2篇
  2003年   1篇
  2002年   1篇
  2000年   3篇
  1999年   3篇
  1998年   1篇
  1996年   1篇
  1995年   1篇
  1994年   1篇
  1991年   1篇
  1989年   1篇
  1988年   1篇
  1987年   2篇
  1985年   1篇
  1962年   1篇
  1948年   1篇
排序方式: 共有93条查询结果,搜索用时 343 毫秒
71.
The 1920 British Empire Statistical Conference was the direct outcome of the Dominions Royal Commission's Final Report, which had spelt out the need to increase the uniformity and comparability of statistics originating from various parts of the Empire and had proposed setting up an imperial central statistical office. Over 24 days, delegates debated a large number of topics, ranging from the practical and empirical subject matters of statistical inquiry to more abstract issues such as the nature and object of statistical data collection and analysis, and to the problems raised by the establishment of a statistical bureau that would operate on an unprecedented scale. This article seeks to understand why, despite apparently favourable conditions, this project soon ended in complete failure. The reasons must be sought in the neatly distinctive outlooks held by the British government and Dominion representatives as regards the function of statistics for the purpose of government, in the quite different bureaucratic settings that embodied and sustained these views, as well as in the tensions and centrifugal pressures that acted upon inter-imperial relations following the Great War.  相似文献   
72.
Zhang, Y., He, W.-H., Shi, G.R. & Zhang, K.-X., 2013. A new Changhsingian (Late Permian) Rugosochonetidae (Brachiopoda) fauna from the Zhongzhai section, southwestern Guizhou Province, South China. Alcheringa 37, 221–245. ISSN 0311-5518.

This paper describes 20 species (including three undetermined species) of Rugosochonetidae (Brachiopoda) in an upper offshore fauna from the Permian–Triassic Boundary Zhongzhai section, southwestern Guizhou Province, South China. New taxa are Tethyochonetes sheni, Tethyochonetes cheni, Neochonetes (Huangichonetes) archboldi, Neochonetes (Sommeriella) waterhousei, Neochonetes (Sommeriella) rectangularis and Neochonetes semicircularis.

Yang Zhang [zyan@deakin.edu.au] and G.R. Shi [guang.shi@deakin.edu.au] (corresponding author), School of Life and Environmental Sciences, Deakin University, Melbourne Burwood Campus, 221 Burwood Highway, Burwood, Victoria 3125, Australia; Weihong He [whzhang@cug.edu.cn] (corresponding author) and Kexin Zhang [kx_zhang@cug.edu.cn], State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, 388 Lumo Road, Hongshan, Wuhan 430074, PR China. Received 8.6.2012; revised 19.9.2012; accepted 7.10.2012.  相似文献   
73.
This article examines the activist movement Ni Putes Ni Soumises (NPNS), whose féminisme d'urgence offers a powerful reformist voice which articulates contemporary feminism with traditional Republicanism. NPNS map the quartiers sensibles as male-dominated spaces which have deteriorated since the 1980s. They do so because they campaign against the abuse of women, mainly sexual violence. We examine their claims, and rely on the few statistics available. We then outline the key ideas which inform NPNS's strategies of resistance to sexual abuse: thus, a second section focuses on victim support. Thirdly, we discuss NPNS's interventions in schools. These preventative measures nurture core values of French citizenship while stressing the need for the sexes to learn to respect each other and live together in harmony (mixité). We also examine NPNS's contentious stance on the voile musulman and laïcité. We note that the radicalism of NPNS reveals paradoxical tensions (in particular with regard to laïcité ) which are at the core of French politics, and is open to accusations of instrumentalisation.  相似文献   
74.
This paper explores the relationships between a particular photographic archive, Indigenous Australians and early ethnography. Colonial ethnographers, Spencer and Gillen, travelled throughout Central and Northern Australia in 1901 and 1902. Their experiences in the town of Borroloola with the local Indigenous peoples, in particular the Yanyuwa people, are contrasted to their experiences in other regions that they travelled through. While at Borroloola, Spencer and Gillen photographed a number of Yanyuwa men and women. In 1981, the repatriation of those images back into the community facilitated discussion about the appropriate positioning of each individual in Yanyuwa systems of kinship, and debate around the ceremonial details recorded, informing new layers of social memory. Yanyuwa elders expressed joy at viewing, naming and positioning the long deceased kin but when the identity of the person could not be recalled, responses conveyed a deep sense of loss. This paper explores the response to one of these photographs and explores in detail the resonances that this one photograph holds for the Yanyuwa community.  相似文献   
75.
76.
As a side-product of industrial research, new chemical nerve agents (Tabun, Sarin, Soman) superior to those available to the Allied Forces were discovered in Nazi Germany. These agents were never used by Germany, even though they were produced at a large scale. This article explores the toxicological and physiological research into the mechanisms of action of these novel nerve agents, and the emergence of military research objectives in neurophysiological and neurotoxicological research. Recently declassified Allied military intelligence files document secret nerve agent research, leading to intensified research on anticholinesterase agents in the peripheral and the central nervous system. The article discusses the involvement of IG Farben scientists, educational, medical and military institutions, and of Nobel Prize laureate Richard Kuhn, director of the Kaiser Wilhelm Institute for Medical Research.  相似文献   
77.
During National Socialism, the politically motivated interest in psychiatric genetic research lead to the founding of research departments specialized in pathological-anatomical brain research, the two Kaiser Wilhelm-Institutes (KWI) in Berlin and Munich. The latter was indirectly provided with brain material by Bavarian State Hospitals, to three of which "Kinderfachabteilungen" (Special Pediatric Units) were affiliated. As children became victims of the systematically conducted child "euthanasia" in these Special Pediatric Units, this paper will address the question whether and to which extent the organs from victims of child "euthanasia" were used for (neuro-) pathological research at the KWI in Munich. By means of case studies and medical histories (with focus on the situation in Kaufbeuren-Irsee), I will argue that pediatric departments on a regular base delivered slide preparations, that the child "euthanasia" conduced in these departments systematically contributed to neuropathological research and that slide preparations from victims of child "euthanasia" were used in scientific publications after 1945.  相似文献   
78.
79.
80.
ABSTRACT. The spatial price equilibrium on a general network may be formulated as a nonlinear-cost mathematical programming problem with simple constraints, when the decision variables are the path flows. The solution of this problem is difficult due to the very large number of variables (paths) and the impracticality of generating all the paths from all the origins to all the destinations. In this paper, we develop a Gauss-Seidel-Newton Projection algorithm and combine it with a restriction strategy. That makes it unnecessary to generate a priori all the paths. This algorithm may be further improved by exploiting the equivalence between the spatial price equilibrium on a general network and the network equilibrium. Computational results that we present in this paper demonstrate the efficiency of the proposed solution algorithms.  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