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   496篇
  免费   4篇
  500篇
  2024年   2篇
  2023年   5篇
  2022年   9篇
  2021年   8篇
  2020年   20篇
  2019年   33篇
  2018年   36篇
  2017年   20篇
  2016年   34篇
  2015年   27篇
  2014年   10篇
  2013年   76篇
  2012年   26篇
  2011年   19篇
  2010年   19篇
  2009年   13篇
  2008年   19篇
  2007年   27篇
  2006年   20篇
  2005年   14篇
  2004年   11篇
  2003年   9篇
  2002年   6篇
  2001年   9篇
  2000年   7篇
  1998年   3篇
  1997年   5篇
  1996年   3篇
  1994年   1篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1990年   1篇
  1989年   1篇
  1984年   3篇
排序方式: 共有500条查询结果,搜索用时 15 毫秒
411.
    
History shows that wars can be enormously disruptive of economic activity, especially international trade, national income, and global economic welfare. This article analyzes the impact on the European regions the Russian invasion of Ukraine using the largest and most updated multiregional input-output model for Europe. Two shocks, trade and inflation, and four alternative scenarios are simulated. The scenarios are considered regarding the number of countries applying a trade embargo, the exemption of oil and gas, and the potential trade diversions with third countries such as China. We obtained a significant fall in GDP (−1.7%), 3.7 m lost jobs and 3% raise over the prewar inflation rate. For trade shock, large indirect effects are obtained, indicating the high relevance of the sectors and countries exposed to the war and the sanctions. The republics of the former Soviet Union, as well as the satellite countries of the former communism, face the harshest adverse impacts. This work shows the importance of breaking Russia's colonial economic ties to the countries in Eastern Europe.  相似文献   
412.
    
The Bell site was the principal village of the Algonquian-speaking Meskwaki from ca. A.D. 1680 to 1730. Based on collected ethnohistoric data, it is hypothesized that the Meskwaki saw bears and dogs as spiritually important animals and expressed this view through differential treatment of their remains. The results suggest that discard behaviors for bears were unique and that their remains may be indicative of ritual feasting. Meanwhile, comparison of features with dog remains to features with bear remains does not show clearly comparable behaviors in most cases. Ethnohistoric and ethnographic data suggest that dogs played an important role as spiritual conduits for the Meskwaki and their neighbors, but the archaeological data are not unequivocal.  相似文献   
413.
    
Written sources show that livestock were traded during the Roman period. However, there is scarce information available to characterise this trade because of its invisibility in the archaeological record. In our paper, we shed light on this issue by applying both osteometric and genetic analyses on cattle remains from the Roman trading post of Empúries (Catalonia) to determine how livestock contributed to Roman trade and, thus, to the economy of the Empire. Analysis of 26 cattle metacarpals from Empúries has allowed us to document the presence of different cattle morphotypes in this city during its Early Roman occupation. The morphological and genetic differences seen in Empúries cattle can be explained through trade of different cattle varieties, more appropriate for milk production and/or traction than the local stock. Once arrived at the port of Empúries, these imported cattle would have then been distributed to surrounding villas. Copyright © 2016 John Wiley & Sons, Ltd.  相似文献   
414.
In the late 1960s, a workers’ movement at Lucas Aerospace was formed and proposed alternative products other than military production. Reacting to some 5000 redundancies in the company across its 13 sites nationally, a ‘combine’ committee of shop-stewards and workers accused the company management of lobbying for defence orders ahead of civilian manufacturing. Despite acclaim for the combine from the left-wing of the Labour Party and the disarmament movement, the 1974–1979 Labour Government did not favour the workers’ proposals and referred the combine to the Confederation of Shipbuilding and Engineering Unions. Behind the scenes, Labour ministers at the Department of Industry felt that the combine would upset the balance of the defence industry, which was at that time an important contributor to employment and the balance of payments, as well as Britain’s military role in the Cold War.  相似文献   
415.
上海展览业市场特征实证分析   总被引:4,自引:0,他引:4  
本文以实地调研获得的第一手资料为基础,以上海主要展览场馆举办的展览会为研究对象,从展览业的行业类型、参展商和专业买家对展览会的认可度评价、影响展览市场的不同因素对市场影响的强度等方面,对上海展览业的市场特征进行了统计分析,并据此提出了改进和提升上海展览业的对策建议。  相似文献   
416.
This paper presents and discusses the Neutron Activation Analysis (NAA) results newly obtained from pumice pieces found decades ago at the Egyptian sites of Maiyana, Sedment, Kahun, and Amarna – now in the collections of the Ashmolean Museum, Oxford, and the Petrie Museum of Egyptian Archaeology, London – which could be successfully related to several volcanic eruptions in the Mediterranean. The work contributes to the constant accumulation of knowledge concerning the first appearance of pumice from the so-called Minoan eruption of the Santorini volcano. In addition, it unexpectedly sheds more light on the long-distance trade of Mediterranean volcanic material in the Bronze Age world by disclosing another connection between Lipari and the Eastern Mediterranean.  相似文献   
417.
We use NAA to characterize a relatively large archaeological ceramic sample from the Late Bronze Age to Hellenistic phases of Kinet Höyük, a coastal Turkish site in the Gulf of Iskenderun at the northeast corner of the Mediterranean Sea. The geographic extent of local Kinet wares (how local is local?) is established through comparison with sediment samples across the Kinet hinterland. Four major compositional groups are identified: local and locally imported wares, imports from Cypriot, and presumed Western Anatolian and Aegean centers, and imports that appear relatively homogenous elementally but comprise typologically diverse ceramics with attributions that range from Cyprus to the coastal mainland. Comparison with other published NAA studies for this site reinforces the elemental evidence for local production, and underlines the need for caution when assuming local production always equates with local clays particularly for coastal sites. We propose that the chronological distribution of the local and non-local groups provides a useful political economic proxy. The study indicates systemic and widespread political disruption and marginalization at the transition to the Late Iron Age in this region.  相似文献   
418.
This article discusses the province of Ingria, part of Sweden from 1617 until 1704, and its position in the Swedish Kingdom in the late 17th century. The main purpose is to examine how Sweden implemented its centralization and unification policy in Ingria and what reactions it triggered at the local level. Court records and other administrative documents have been used as source material. Ingria was a borderland that was primarily of military importance for Sweden as a buffer zone against Russia. A strong defence was also essential in order to secure the profitable Russian transit trade, in which the Ingrian towns of Narva and Nyen played a pivotal role. Sweden’s centralization and unification policy, which peaked in the middle of the 1680s, aimed particularly at strengthening its military presence in Ingria. Resources were obtained by confiscating fiefs and later privatizing the administration of manors, to be handled by leaseholders. Tax farming resulted in peasant unrest, and eventually the Crown had to regulate the taxation. Ultimately, the Crown was not strong enough to carry out a coherent integration policy. Ingria remained a borderland province that formed a link between the core areas of Sweden and the Baltic provinces.  相似文献   
419.
徐振伟 《史学集刊》2022,(1):133-144
20世纪50年代末60年代初,面对中国发生的粮食紧缺问题,作为美国冷战盟友的加拿大开始采取自主行动,主动与中国开展粮食贸易。此时美国仍对中国进行政治孤立和经济封锁,加拿大的行为无疑与美国的冷战遏制战略相冲突,美国与加拿大的博弈由此开启。美加双方具有不同的利益诉求,加拿大希望扩大粮食销售市场,解决国内粮食过剩的问题,而美国更看重冷战联盟,并着眼于维护冷战联盟内部的团结,为此在不涉及美国核心利益的问题上向加拿大做出一定的让步。美国与加拿大之间的博弈反映了作为联盟主导者的美国开展联盟管理的困境,也体现了联盟政治与经济利益之间的张力。  相似文献   
420.
曹荣林 《人文地理》1992,7(2):47-53
建国以来,南京的集贸市场几起几落,现已成为人们生活不可缺少的购物场所,传统的集市贸易发生了重大变化。南京市城区、郊区、辖县的集贸市场具有明显的地域差异。从影响集贸市场发展布局的主要因素分析,预测了南京市城乡集贸市场的发展布局趋势。  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