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51.
《中国移民史》列有109个唐宋湖南移民实例,本文对其中在史料和史实方面存在诸多问题的65例进行了考校,并归纳了其中存在的主要问题:一是对史料的理解与引用有误。这主要表现为一人误作二人,甲卷引作乙卷,姓名张冠李戴,牵强列入或列之无据,将移民与移民后裔相混淆,以及有关移民迁移的时间和地点等方面的问题。二是没有考察史料的史源。这主要表现在:引用后人史料,没注意到前人文献中已有相同的、甚至更为可靠的史料,没有甄别第一手资料和二手资料;没有考察相关史料,对引用史料中所提供的一些有关移民信息的线索没有追根溯源、旁征侧证。  相似文献   
52.
牛丽云  兰措卓玛 《攀登》2008,27(3):105-108
传统的公司法理论,在债权人利益的保护机制上过分相信并依赖于资本的担保功能,不注重其他法律制度的设计,结果导致债权人利益的保护只停留于形式。笔者通过分析债权人保护模式上的差异,认为新公司法对债权人的保护,不仅要有事前的预防措施,也应有事后的救济途径。  相似文献   
53.
河南省文物考古研究所的前身是河南文物工作队 ,它成立于 1 952年 6月 ,至今已走过了 50个春秋。 50年的开拓进取 ,50年的发展壮大 ,职工队伍由建队时的 2 0余人增至现在的 1 0 5人 ,基础设施从开初的两座二层楼房扩展为一幢五层办公楼、一幢六层库房楼和一幢五层住房楼 ,并拥有现代化的摄录像设备、修复设备、办公通讯和交通工具等。全所设置有第一、二、三研究室、业务科、编辑部、资料室、办公室、计财科、保卫科、老干部科和科技服务部等 1 1个科室 ,在三个研究室下面还有郑州商城、郑州西山、新郑、登封、三门峡、济源等六个工作站 ,承…  相似文献   
54.
国史研究是党领导的社会科学事业 ,应当坚持以马克思主义唯物史观为指导。“三个代表”重要思想本身 ,就是根据历史唯物主义的基本原理 ,结合党的历史和党所面临的新形势、新任务而提出的 ,是历史唯物主义在新的历史条件下的运用和发展。要按照“三个代表”的要求解决好国史研究的重点问题 ,坚定地站在中国人民的根本利益的立场上来研究国史、撰写国史 ,真实地反映中国人民建设有中国特色社会主义的伟大实践。要按照“三个代表”的要求解决好国史研究中是非判断的标准问题 ,国史的主流是成就是经验 ,国史研究的重点也只能是建国以后的成就和经验。国史研究要更好地发挥资政育人的作用 ,这是国史研究的正确方向 ,也是国史学科建设的关键所在。  相似文献   
55.
近几十年来,我国考古工作曾先后在一些西汉遗址和墓葬中发现了若干纸状残片,于是引起国内外许多学和广大人民的关注和提出疑问。是否蔡伦前约二百年就有了纸?造纸术还是不是蔡伦发明的?新发掘的纸状物到底是个什么样?经对历次的发掘作了详细的调查研究和分析化验,结论认为:20世纪有关纸的考古发现不能否定蔡伦发明造纸术。  相似文献   
56.
Indigenous methodologies in geography have recently been developed to decolonise Western dominated paradigms. It has been argued that research which does not benefit Indigenous communities should not be conducted. However, Indigenous methodologies are not taught in many post-secondary institutions. Therefore, when they pursue Indigenous topics, many junior researchers are self-taught in these methodologies. However, these methodologies cannot be defined simply and they are too diverse to be learnt in a short period. In Japan, Indigenous peoples are not widely recognised and research on contemporary Indigenous issues is limited. The concept of Indigenous methodologies is rarely discussed. Because of this, Japanese researchers rarely identify their research as adopting an Indigenous methodology. Indigenous researchers are thereby discouraged from pursuing Indigenous methodologies. Furthermore, a methodology or a thesis statement used by researchers to reflect Indigenous perspectives often gets little support from Indigenous peoples. My master's research on the Ainu mirrored this situation. While Indigenous methodologies remain difficult to learn, junior researchers should not be discouraged from this form of engagement. Practical suggestions are therefore necessary to encourage their use and application. Based on my experience, I suggest that researchers approach Indigenous communities from a learning perspective. This would encourage open-mindedness and sensitivity. Researchers should also be prepared and willing to refine their research questions and to continue their literature searches after their fieldwork is completed. These strategies could limit misinterpretation and exploitation of Indigenous knowledges and peoples.  相似文献   
57.
本文介绍了李三孤堆楚墓所出青铜器的流散和收藏慵况,回顾了自20世纪30年代初至今学者们对这批楚器的研究历程及成果,并从铭文释读、器物形制、器群主人及其埋葬环境几方面分别阐述了各家之说,最后通过回顾和分析总结出目前这一研究中存在的问题,提出了深入进行这一研究的重要意义,并指出了今后的研究方向。  相似文献   
58.
A typology of artificial rock hollows and tentative identification of their functions is founded upon study of recent practices at Sukur. Five stages of development of equipment for grinding grain are identified and shown, using field archaeological evidence, to constitute a sequence of historical phases that extends from the Neolithic or early Iron Age to the present. The development of other types of hollows is related to this sequence. Ethnographic data are employed to estimate the use lives of grain grinding hollows, which are interpreted in terms of woman-centered familial grain-grinding units. The evidence suggests that prior to ca. AD 1600 the population density averaged two orders of magnitude less than in recent times—with important implications for regional culture history. This exploratory study demonstrates the potential of artificial hollows as evidence for the study of prehistory, culture and demographic history, and the history of landscape in Africa and beyond.  相似文献   
59.
F. Wendler  A. Okamoto  P. Blum 《Geofluids》2016,16(2):211-230
Mineral precipitation in an open fracture plays a crucial role in the evolution of fracture permeability in rocks, and the microstructural development and precipitation rates are closely linked to fluid composition, the kind of host rock as well as temperature and pressure. In this study, we develop a continuum thermodynamic model to understand polycrystalline growth of quartz aggregates from the rock surface. The adapted multiphase‐field model takes into consideration both the absolute growth rate as a function of the driving force of the reaction (free energy differences between solid and liquid phases), and the equilibrium crystal shape (Wulff shape). In addition, we realize the anisotropic shape of the quartz crystal by introducing relative growth rates of the facets. The missing parameters of the model, including surface energy and relative growth rates, are determined by detailed analysis of the crystal shapes and crystallographic orientation of polycrystalline quartz aggregates in veins synthesized in previous hydrothermal experiments. The growth simulations were carried out for a single crystal and for grain aggregates from a rock surface. The single crystal simulation reveals the importance of crystal facetting on the growth rate; for example, growth velocity in the c‐axis direction drops by a factor of ~9 when the faceting is complete. The textures produced by the polycrystal simulations are similar to those observed in the hydrothermal experiments, including the number of surviving grains and crystallographic preferred orientations as a function of the distance from the rock wall. Our model and the methods to define its parameters provide a basis for further investigation of fracture sealing under varying conditions.  相似文献   
60.
We used hydrologic models to explore the potential linkages between oil‐field brine reinjection and increases in earthquake frequency (up to Md 3.26) in southeastern New Mexico and to assess different injection management scenarios aimed at reducing the risk of triggered seismicity. Our analysis focuses on saline water reinjection into the basal Ellenburger Group beneath the Dagger Draw Oil field, Permian Basin. Increased seismic frequency (>Md 2) began in 2001, 5 years after peak injection, at an average depth of 11 km within the basement 15 km to the west of the reinjection wells. We considered several scenarios including assigning an effective or bulk permeability value to the crystalline basement, including a conductive fault zone surrounded by tighter crystalline basement rocks, and allowing permeability to decay with depth. We initially adopted a 7 m (0.07 MPa) head increase as the threshold for triggered seismicity. Only two scenarios produced excess heads of 7m five years after peak injection. In the first, a hydraulic diffusivity of 0.1 m2 s?1 was assigned to the crystalline basement. In the second, a hydraulic diffusivity of 0.3 m2 s?1 was assigned to a conductive fault zone. If we had considered a wider range of threshold excess heads to be between 1 and 60 m, then the range of acceptable hydraulic diffusivities would have increased (between 0.1–0.01 m2 s?1 and 1–0.1 m2 s?1 for the bulk and fault zone scenarios, respectively). A permeability–depth decay model would have also satisfied the 5‐year time lag criterion. We also tested several injection management scenarios including redistributing injection volumes between various wells and lowering the total volume of injected fluids. Scenarios that reduced computed excess heads by over 50% within the crystalline basement resulted from reducing the total volume of reinjected fluids by a factor of 2 or more.  相似文献   
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