全文获取类型
收费全文 | 1299篇 |
免费 | 21篇 |
专业分类
1320篇 |
出版年
2024年 | 10篇 |
2023年 | 69篇 |
2022年 | 12篇 |
2021年 | 13篇 |
2020年 | 71篇 |
2019年 | 91篇 |
2018年 | 83篇 |
2017年 | 74篇 |
2016年 | 67篇 |
2015年 | 68篇 |
2014年 | 77篇 |
2013年 | 209篇 |
2012年 | 89篇 |
2011年 | 55篇 |
2010年 | 45篇 |
2009年 | 46篇 |
2008年 | 43篇 |
2007年 | 39篇 |
2006年 | 32篇 |
2005年 | 17篇 |
2004年 | 11篇 |
2003年 | 16篇 |
2002年 | 14篇 |
2001年 | 20篇 |
2000年 | 8篇 |
1999年 | 11篇 |
1998年 | 9篇 |
1997年 | 8篇 |
1996年 | 3篇 |
1995年 | 1篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
排序方式: 共有1320条查询结果,搜索用时 0 毫秒
1.
商末黄河中游气候环境的变化与社会变迁 总被引:21,自引:0,他引:21
新石器时代到商代黄河流域的气候属于温暖湿润期;商代后期气候出现厂干旱化,导致了古公亶父迁岐,文王迁程迁丰,帝乙帝辛时不断向南方发展;而商末的旱灾和饥荒是周武王克商的直接导火索,导致商周之际的改朝换代。商末气候环境的变迁对其时社会政治的影响极大。 相似文献
2.
略论晚清汉学的兴衰与变化 总被引:4,自引:0,他引:4
晚清时期,兴盛于乾嘉年间的清代儒学主流学派-汉学-尽管走上衰落的道路,但这种衰落并非直线性地下降,而是经历了一个较长的曲折变化的过程。自鸦片战争到中日甲午战争长达半个多世纪的时间里,汉学依然是中国学坛人多势众、著述丰富、分布广泛的强势学派,居于学界“老大”的地位。晚清汉学家们秉承乾嘉宿儒治学传统,在经学、小学、音韵学等领域开展深入研究,取得显著成就,甚至在某些方面直驾乾嘉而上。晚清汉学因处于与乾嘉汉学完全不同的社会环境,形成“实”、“通”、“变”的历史特征,并随着中国传统社会发生根本性的变化而实现着自身的新旧更替。晚清汉学既沿袭了传统儒学的许多消极因素,也包含着其中的积极成分,对中国近代社会文化产生了复杂而多重的影响。 相似文献
3.
Despite an increasing number of publications regarding the Pre-Columbian earthworks of the Llanos de Moxos, there have been no serious attempts to undertake a systematic survey of the archaeological remains of this lowland region in the Bolivian Amazon. Based on the GIS analysis of data gathered in the field and retrieved from satellite images, we discuss the spatial distribution of the Pre-Columbian settlements in a 4500 Km2 area of the Llanos de Moxos to the east of Trinidad, capital of the Beni Department, and their relationship with the geographical settings. Our findings shed new light on the prehistory of the region and bear important implications for our understanding of the impact of Pre-Columbian human occupation. 相似文献
4.
In traditional Bantu-speaking societies in southern Africa, drought is caused by breaches in rules of pollution. At times of severe drought (3–5 consecutive seasons), rainmakers ascend special hills to perform special rituals. The archaeological signature of this unique activity forms a cultural proxy for drought. New research shows that burnt daga structures also correlate with high δ15N values for small stock. Burnt structures thus form a new component to the proxy. According to the ethnography, farmers implicated in the cause burnt their grain bins, and sometimes houses, as a ritual of cleansing. The dating of these structures provides a revised climatic sequence for the plateau portion of the summer rainfall region. Among other new results, there was a drought at the end of the Mapungubwe period (ca. AD 1300). At about AD 1650, droughts associated with the arrival of maize caused people to stop growing it as food for a while. 相似文献
5.
This paper is concerned with the historical dimension of the current debates on climate change, and argues that the history of the understanding of climate change has itself become part of the rhetorical account. Key historic moments of disclosure and revelation have become central to the ways in which climate change is presented as a persuasive narrative today. This paper takes a discursive approach to exploring the background of these signal moments in climate change history, and aims to show how they have helped to shape the terms of the current debate. 相似文献
6.
《Romance Quarterly》2012,59(2):101-121
The underlying surface of the palimpsest in question is not physical. Instead, it is constituted by the events and persons of the Spanish War of Independence from Napoleonic France. Although this period officially extends from 1808 to 1814, the epoch-making Battle of Trafalgar in 1805 initiates the period for many historians as well as for the novelists Benito Pérez Galdós and Arturo Pérez-Reverte. Onto this surface, then, from 1805 to our own days, narratives have been and continue to be created: some in words (lexical representations), some in images (graphic representations), and some in hybrid graphic-lexical, as well as in filmic, versions. Commonly those who come later in the process are very familiar with earlier representations. Over both them and the underlying historical events and persons these later “painters” create their own narratives of all or part of the 1805–14 period. This article centers on the narratives of Galdós and Pérez-Reverte as especially prominent layers of the palimpsest of the war while contextualizing their layers of the palimpsest onto a canvas that includes the contributions of Francisco José de Goya and the Count of Toreno. 相似文献
7.
《亚洲研究评论》2012,36(1):39-58
Abstract: It has been argued that the preoccupation of individual nations with economic growth and development has contributed to environmental degradation. Economic nationalism is viewed as a hindrance to international strategies that can be used to slow the rate of environmental degradation. This paper argues that, in the case of Singapore, the means to mitigate environmental concerns are largely driven by material interests. Emissions control measures have been introduced provided they have been deemed economically feasible. But this has not prevented the city state from being a socially responsible member of the global community. This paper argues that, in today's context, policies that appear to be “nationalist” may not be totally inconsistent with policies that could help to improve the standard of living of all members of the international community. Selective engagement in regional and global initiatives realistically portrays the policy choices of many nation states. This paper contends that environment-related initiatives have to be seen in terms of reconciling the dual objectives of maximising the national interest and mitigating the global problem of environmental degradation. 相似文献
8.
Osvaldo F. Pardo 《Colonial Latin American Review》2018,27(1):2-29
In the sixteenth century, as moral theology was being consolidated as an autonomous academic discipline, theologians at the University of Salamanca, including the Dominican Francisco de Vitoria, began to incorporate current moral and political issues into their teaching agendas. Prominent among these issues were those arising out of the conquest of the Americas. Their students, a generation of university-trained missionaries, then went to work in Spanish possessions in the Americas and the Philippines. These missionaries and men of learning included the Augustinians Alonso de la Veracruz (in Mexico) and Martín de Rada (in the Philippines and China). As their world expanded, Vitoria's teachings were rendered fully intelligible in the confusing reality of the colonial enterprise, and these missionaries struggled to apply his lessons to the questions of conscience they encountered. The result can be considered a new chapter in the relationship between theological knowledge, the production of facts, and moral certainty, all against the backdrop of the territorial and economic expansion of Spain. 相似文献
9.
First Insights into the Technique Used for Heat Treatment of Chert at the Solutrean Site of Laugerie‐Haute,France
下载免费PDF全文

The earliest evidence of flint and chert heat treatment was found in the ~21.5–17 ka old European Solutrean culture. The appearance of pyrotechnology as part of the production of stone tools has important implications for our understanding of Upper Palaeolithic technological evolution and the specific adaptations during the last glacial maximum in Europe. However, the techniques and procedures used to heat‐treat rocks during the Solutrean remain poorly understood. No direct archaeological evidence has so far been found and the most promising approach is to understand these techniques by determining the parameters with which flint and chert were heated at that time. In this study, we investigate the heating temperature of 44 heat‐treated laurel‐leaf points from Laugerie‐Haute, using a non‐destructive technique based on infrared spectroscopy. Our results document that most of the artefacts were heated to a narrow interval of temperatures between 250 °C and 300 °C. This indicates a standardized technique that allowed to created similar conditions during successive heating cycles. The implications of these results for our understanding of the technical complexity during the Solutrean must be discussed in the light of different heating techniques used at different places and periods. 相似文献
10.
Christine Steinmetz-Weiss Nancy Marshall Kate Bishop Homa Rahmat Susan Thompson Miles Park Christian Tietz Linda Corkery 《The Canadian geographer》2024,68(1):129-141
The city dashboard has become an integral component of smart city asset management systems. It leverages data collected from multiple sources to monitor performance and enable evidence-based decision making. This article investigates the use of a design thinking framework to develop a functional and easy to understand city dashboard. The Smart Social Spaces project is used as a case study to illustrate how design thinking can be employed to develop an asset management dashboard, enabling efficient management of public space and infrastructure. The article profiles the unique collaboration between a local government, a multi-disciplinary team of university academics, and a street furniture designer and manufacturer, all located in Sydney, Australia. We unpack some of the design practice nuances that led this project to receive national awards and international recognition, and most importantly, created a user-friendly system to track and maintain public micro assets. We conclude with lessons learnt and recommendations for dashboard development through a design thinking process. 相似文献