全文获取类型
收费全文 | 10189篇 |
免费 | 188篇 |
专业分类
10377篇 |
出版年
2024年 | 22篇 |
2023年 | 75篇 |
2022年 | 154篇 |
2021年 | 151篇 |
2020年 | 416篇 |
2019年 | 284篇 |
2018年 | 358篇 |
2017年 | 321篇 |
2016年 | 369篇 |
2015年 | 256篇 |
2014年 | 276篇 |
2013年 | 1089篇 |
2012年 | 650篇 |
2011年 | 590篇 |
2010年 | 476篇 |
2009年 | 528篇 |
2008年 | 529篇 |
2007年 | 632篇 |
2006年 | 612篇 |
2005年 | 599篇 |
2004年 | 474篇 |
2003年 | 430篇 |
2002年 | 333篇 |
2001年 | 242篇 |
2000年 | 272篇 |
1999年 | 72篇 |
1998年 | 30篇 |
1997年 | 19篇 |
1996年 | 23篇 |
1995年 | 14篇 |
1994年 | 12篇 |
1993年 | 24篇 |
1992年 | 13篇 |
1991年 | 9篇 |
1990年 | 3篇 |
1989年 | 1篇 |
1988年 | 4篇 |
1987年 | 1篇 |
1984年 | 1篇 |
1983年 | 5篇 |
1982年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 1篇 |
1978年 | 3篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
991.
992.
秦汉政治史观的演变历程 总被引:1,自引:0,他引:1
秦汉时期共有三种主要的政治史观:以五行相胜原则运转的五德终始说、以五行相生原则运转的汉为尧后说,以及董仲舒所创三统说。秦到汉武帝时,五行相胜的五德终始说占政治史观的主流,汉昭帝以后则被五行相生的政治史观代替,董仲舒创立的三统说在汉武帝时形成,此后便和五行相生政治史观平行发展。这三种政治史观都与阴阳五行有密切关联,并对秦汉乃至以后两千余年封建社会产生深远影响。 相似文献
993.
位于长江入海口的“长江口二号”清代沉船是中国目前发现的保存最为完整的古代木制沉船之一,已于2022年11月完成整体打捞。在进行水下考古调查时,沉船出水的部分青花瓷出现的病害现象引起了考古工作者的关注,特别是裂纹中黑色污染物及表面铁锈状污染物对文物的外观产生了很大影响。本工作选取了三件具有典型被污染特征的青花瓷标本作为代表,使用能量色散X射线荧光分析(EDXRF)、光学显微镜(OM)、X射线衍射分析(XRD)、拉曼光谱分析(Raman)和扫描电子显微镜-能谱分析(SEM-EDS)等方法,对污染物进行了研究,探讨了其形成原因以及环境的影响作用,并对其潜在危害进行了分析。研究表明,污染物主要以方解石、菱铁矿等碳酸盐以及铁的氧化物、氢氧化物和硫化物为主。长期处于河口淤泥中的还原性环境是导致菱铁矿和亚稳的铁硫化物形成的原因,船体中铁质构件腐蚀对局部环境的污染是重要的影响因素,这也反映出被污染的青花瓷所处位置和环境的特殊性。出水的部分青花瓷釉中裂纹的形态表明其形成是由物理撞击造成,而釉中硅灰石晶体的选择性腐蚀会导致腐蚀坑的形成,裂纹和腐蚀坑均为外部污染物进入釉层内部提供了通道,导致瓷器劣化。出水后... 相似文献
994.
In a talk given at Zurich in the late 1940s, Hermann Weyl discussed Ferdinand Gonseth's dialectical epistemology and considered it as being restricted too strictly to aspects of historical change. His experiences with post-Kantian dialectical philosophy, in particular Johann Gottlieb Fichte's derivation of the concept of space and matter, had been a stronger dialectical background for his own 1918 studies in purely infinitesimal geometry and the early geometrically unified field theory of matter (extending the Mie-Hilbert program). Although now Weyl distantiated himself from the speculative features of his youthful philosophizing and in particular from his earlier enthusiasm for Fichte, he again had deep doubts as to the cultural foundations of modern mathematical sciences and its role in material culture of high modernity. For Weyl, philosophical «reflection» was a cultural necessity he now turned towards Karl Jaspers' and Martin Heidegger's existentialism to find deeper grounds, similar to his turn towards Fichte's philosophy after World War I. The discussion in the late 1940s can be read as a kind of post-World-War-II «Nachtrag» to Weyl's more widely known philosophical comments on mathematics and the natural sciences published in the middle of the 1920s. 相似文献
995.
S.?WurzEmail author P.?Van?Peer N.?le?Roux S.?Gardner H.?J.?Deacon 《African Archaeological Review》2005,22(1):1-24
The technology of the end products i.e. blades and points in Late Pleistocene stone artefact assemblages from Klasies River, South Africa, and the Nile Valley, Egypt, are compared. The comparison includes univariate and multivariate analysis of metrical attributes enhanced by graphical biplot displays. The end products in these assemblages are either dominantly points or blades and this is related to the core reduction strategy adopted. The MSA 11 from Klasies River and the Nubian Complex industry from the Nile Valley are point industries made in the Levallois tradition, while the MSA 1 from Klasies River and the Taramsan from the Nile Valley may be non-Levallois or adapted Levallois blade industries. Dating of the assemblages shows the changes between dominant core reduction strategies are sequential and time restricted in both South and North Africa. It is concluded that variability of the same kind occurs in Middle Stone Age and Middle Palaeolithic assemblages south and north of the Sahara in the early Late Pleistocene.Dans cet article, les technologies des produits recherchés, des lames et des pointes, pour certains ensembles lithiques de Klasies River, Afrique du Sud et la Vallée du Nil, Egypte, sont comparées. Cette comparaison implique des analyses univariées et multivariées de variables métriques biplot. Les produits recherchés sont bien des pointes que des lames, selon les stratégies dexploitation adoptées. Le MSA II de Klasies River et le Complexe nubien de la Vallée du Nil sont des industries à pointes issues de la tradition Levallois. Par contre, le MSA I de Klasies River et le Taramsien de la Vallée du Nil évoquent une technologie de production non-Levallois ou Levallois modifiée. Les éléments de datation disponibles indiquent que les changements dans la prépondérance des stratégies dexploitation senchaînent dans une séquence chronologique bien identifiable, aussibien dans lAfrique du Sud que lAfrique du Nord. On arrive à la conclusion quune variabilité du même caractère est attestée dans les ensembles du Middle Stone Age et du Paléolithique moyen au sud et au nord du Sahara, pendant le Pléistocène supérieur ancien. 相似文献
996.
近代中日两国在实行地方自治前,都存在着一定的“自治传统。”这种传统在日本日村落共同体,在中国日宗族自治、乡绅自治。但是虽然同为“自治”,实际上有着很大差别。这种差别也可谓是导致两国实行近代地方自治成败的重要原因之一。本文通过对中日“自治传统”在地方公选议会、地方公共财政的运营和地方公共团体法人化的过程中所起的不同作用进行比较分析,从而总结出中日“自治传统”具有的不同的特质。 相似文献
997.
20世纪60~90年代爱国卫生运动初探 总被引:2,自引:0,他引:2
20世纪60~90年代的爱国卫生运动尽管在"文化大革命"时期不同程度地受到"左"倾思想的干扰,但仍持续发展,特别是党的十一届三中全会以后,随着经济的发展和社会的进步,其内容更加丰富,已成为社会主义现代化建设事业的重要组成部分.爱国卫生运动的历史告诉我们党和国家对爱国卫生运动的重视和领导是我国卫生防疫事业取得不断胜利的根本保证;教育、动员和组织人民群众参加爱国卫生运动是我国独具特色的卫生防疫事业的有效工作方式;爱国卫生运动与其他工作相结合、突击性与经常性相结合、治本与治标相结合是推动卫生防疫事业发展的重要方法. 相似文献
998.
During the 1970s, excavations were conducted in Alta Gracia, Córdoba, Argentina, in a compound that once was a seventeenth
and eighteenth-century Jesuit Convent and is presently a museum. During the excavation, an amazing amount of historic material
never studied before was discovered inside a sealed privy. After studying the material, we were able to identify the objects
as once belonging to Santiago de Liniers, a man who successfully resisted and expelled British invaders from Buenos Aires.
As a result, he was appointed Viceroy, though eventually he was shot in 1810 for confronting the Independence movement. Our
hypothesis is that these objects were thrown into the privy as a gesture of contempt associated with his capture and execution. 相似文献
999.
The purpose of this article is to explain and discuss the essential operational characteristics of the technology of power
(sensu Foucault) perpetrated on the internal frontiers with the Indians in nineteenth-century Argentina. The conquest and
colonization of the Pampas took shape in the establishment of military camp structures placed to create a defensive cordon,
known as “the Indian frontier line.” These constructions were fortlets defended by gaucho cavalry squadrons (know as Blandengues
during the Spanish period, and then Guardias Nacionales after Argentinean Independence). This process is known in Argentinean
historiography as “the conquest of the desert.” This particular technology of power existed in this historical context and
operated at every social level, impacting strongly on the lower classes that inhabited the incorrectly named “desert.” Its
implementation in the military field enabled the existence of an array of micro-powers that surrounded the gaucho, called
vago y malentretenido—“a vagrant and lingerer”—and their women's lives. The army as institution was the locus of various forms
of coercion and old forms of punishment (such as the stakes, whipping, and public executions) most of which affected peasants,
nonresidents, itinerant workers, and the rural youth. This schema was adopted in different areas: in the enrolment and discipline
of the gaucho soldiers, in life in the fortlet-prisons, and in the ritualism of power. The alternative chosen by soldiers
to evade this technology of power and the fortlet-panopticons was escape through desertion. The utility of those observations
is demonstrated, because an important part of the area of research of historical archaeology that has developed with the greatest
impetus in Argentina has taken fortlets as its subject of study. 相似文献
1000.
P. Havelkov S. Villotte P. Velemínský L. Pol
ek M. Dobisíkov 《International Journal of Osteoarchaeology》2011,21(4):487-504
Bone remodelling in the areas of entheses is frequently supposed to be associated with physical stress and the activity patterns of ancient populations. The main aim of this study was to analyse the prevalence of enthesopathies among individuals living in different life conditions. A total of 197 individuals from the Early Medieval (9th century) Mikulčice site were analysed for enthesopathies ‐ 117 adult individuals from Mikulčice castle and 80 individuals from its hinterland. While the inhabitants of the castle were probably ranked among the higher echelons of society, the hinterland was predominantly inhabited by a farming population. It is hypothesized that individuals from the castle were exposed to lower physical stress than individuals from the hinterland. 9 fibrocartilaginous entheses of the upper and lower limbs were evaluated. Enthesopathies occurred in at least one enthesis in 76% of individuals younger than 50 years of age. Significant differences were observed in the occurrence of enthesopathies between castle and hinterland. Males from the agricultural hinterland show the highest prevalence of enthesopathies of all the population groups, while the lowest prevalence of the marker was recorded in males from the castle. Females in the castle were more affected by entheseal changes than females from the hinterland. Sexual dimorphism was more evident in the hinterland. The present study confirmed presumptions based on the archaeological finds, especially for males. This hypothesis cannot be accepted for females. We may suppose that in the 9th century, women living in Mikulčice castle did not represent a privileged social class. Copyright © 2010 John Wiley & Sons, Ltd. 相似文献