全文获取类型
收费全文 | 2032篇 |
免费 | 75篇 |
出版年
2020年 | 19篇 |
2019年 | 50篇 |
2018年 | 45篇 |
2017年 | 53篇 |
2016年 | 64篇 |
2015年 | 57篇 |
2014年 | 49篇 |
2013年 | 748篇 |
2012年 | 34篇 |
2011年 | 29篇 |
2010年 | 55篇 |
2009年 | 52篇 |
2008年 | 51篇 |
2007年 | 39篇 |
2006年 | 26篇 |
2005年 | 21篇 |
2004年 | 28篇 |
2003年 | 27篇 |
2002年 | 25篇 |
2001年 | 25篇 |
2000年 | 23篇 |
1999年 | 23篇 |
1998年 | 23篇 |
1997年 | 21篇 |
1996年 | 15篇 |
1995年 | 16篇 |
1994年 | 13篇 |
1993年 | 20篇 |
1992年 | 17篇 |
1991年 | 18篇 |
1990年 | 16篇 |
1989年 | 20篇 |
1988年 | 19篇 |
1987年 | 23篇 |
1986年 | 26篇 |
1985年 | 30篇 |
1984年 | 18篇 |
1983年 | 31篇 |
1982年 | 20篇 |
1981年 | 15篇 |
1980年 | 16篇 |
1979年 | 22篇 |
1978年 | 16篇 |
1977年 | 17篇 |
1976年 | 14篇 |
1975年 | 13篇 |
1974年 | 15篇 |
1973年 | 12篇 |
1972年 | 15篇 |
1969年 | 13篇 |
排序方式: 共有2107条查询结果,搜索用时 15 毫秒
961.
962.
963.
964.
This Special Issue presents issues in contemporary archaeological theory and practice as influenced by the work of H. Martin Wobst. Wobst came to study in the U.S. nearly 50 years ago and has contributed to many changes in the theory and practice of archaeology since then. Though the papers cover a wide range of topics they share common interests in seeing materiality as constitutive of culture, archaeologists as participants in the present as well as observers of the past, and an interest in transcending traditional definitions of archaeological research. 相似文献
965.
Studies of venue shopping have typically analyzed the case of an individual advocacy group or issue campaign rather than comparing venue strategies across multiple groups. Moreover, this literature focuses on interest groups and advocacy coalitions whose principal mandate is to influence public policy. Using original data, we test theories of venue selection among nonprofit organizations that report engaging in policy processes but the majority of which do not self‐identify as an advocacy group. Our analyses explore the “where” of nonprofit advocacy across three different venue types: branch (executive, legislative), domain (bureaucracy, elected officials), and level of government (local, state, federal). Like interest groups, we find that nonprofits shop among both executive and legislative branches and among elected and bureaucratic domains; however, they tend to specialize in one level of government. Geographic scope and revenue source predicted venue targeting, but most other organizational characteristics including age, capacity, and structure did not. 相似文献
966.
Robert Penner 《The American review of Canadian studies》2015,45(1):71-92
Between the War of 1812 and the emergence of a self-sufficient Canadian Methodism in the 1850s, the combination of geopolitical instability, transatlantic evangelicalism, indigenous and settler enthusiasm for religious revival, and the ideas of romantic nationalism produced a distinctly Ojibwe Christianity. This Christianity is known to us primarily through the letters, journals, and publications of a small group of Algonquian-speaking intellectuals educated in American colleges who mobilized the ideology and institutional networks of the Protestant missionary project to mount a vigorous challenge to the encroachments of settler colonialism occurring on both sides of the Great Lakes. Ojibwe Christians participated in a movement to transform the world into a multiracial Christian commonwealth, a movement within which they could remain committed to a historiographical and nation-building project meant to establish an autonomous, or at least semi-autonomous, Indian polity within the imperialist state. 相似文献
967.
This article argues that, like the liberalising “Great Reforms” of Russia in the mid-19th century, Mikhail Gorbachev's perestroika of the late 20th century was propelled as much by reformist intellectuals' Europe-inspired visions of a more humane society as it was by military-economic crisis. Over the post-Stalin decades, a new policy-academic elite – economists, philosophers, scientists and writers – viewed in the apparent success of East European reforms a model of “socialism with a human face” for their country's eventual reintegration into a “common European home.” Yet their understanding of European integration was too superficial, and their appreciation of communist hard-liners' resistance too belated, to carry their reforms to successful completion. This article also holds that Russian reformers' naiveté was compounded by Western leaders' selfishness and short-sightedness. The latter clung to Cold War beliefs that the Soviet system could not produce a genuine reformist movement. When Gorbachev came to power, his perestroika was considered merely a “ruse,” its ideas of “new thinking” ridiculed, and ultimately only the “shock therapy” of Boris Yeltsin merited significant Western aid despite its broad incompetence and vast corruption. The combined Western-Russian failures in 1990s efforts toward rapid marketisation and integration proved even more damaging than those of the 1980s due to their broad discrediting of Western liberal democracy. 相似文献
968.
Robert Dalsjö 《Cold War History》2014,14(2):175-194
The long-dominant view of Swedish neutrality policy during the Cold War holds that it aimed to reduce tension in peacetime and to keep the country out of a new major war. The main dissenting view is that the policy primarily served peacetime purposes, including domestic politics, and that it would not have worked in a war. Sweden would then either have been attacked by the USSR because it was a Western country in its path of attack, or it would have been drawn in on the allied side because of its cooperation with the West, including tolerating overflights by allied bombers. This article presents a third perspective, namely that Sweden's leaders in the 1950s understood that neutrality would probably fail in wartime, but that they aimed to stay out of the violent initial nuclear exchange. This conclusion is supported by evidence hitherto overlooked in the existing research. 相似文献
969.
This study focuses on the mechanics of methane bubble phase behavior in the gas hydrate stability zone. The transformation of deep‐water methane bubbles into solid hydrate was investigated in Lake Baikal in situ. After being released from the lake bottom, methane bubbles were caught by different traps with transparent walls. When bubbles entered the internal spaces of the traps, the bubbles could be transformed into two different solid hydrate structures depending on the ambient conditions. The first structure was hydrate granular matter consisting of solid fragments with sizes on the order of 1 mm. The second structure was a highly porous solid foam consisting of solid bubbles with sizes on the order of 5 mm. The granular matter did not change as it was brought up to the top border of the gas hydrate stability zone, whereas in the solid foam, free methane rapidly exsolved from the sample during depressurization. We conclude that the decrease in depth and the decrease in the bubble flux rate were key factors in the formation of the hydrate granular matter, whereas the increase in the depth of bubble sampling and the increase in the bubble flux rate facilitated the conversion of bubbles into a highly porous solid hydrate foam. 相似文献
970.
Robert B. Rakove 《Cold War History》2014,14(3):337-357
In 1961, at the height of the Berlin crisis, the United States and Great Britain simultaneously struggled to adopt effective policies toward the first meeting of the Non-Aligned Movement in Belgrade. While the John F. Kennedy administration initially adopted a policy of standoffishness toward the conference, the government of Harold Macmillan engaged in a campaign of quietly encouraging moderate attendance. Moderate British expectations led to sound policy, whereas the Kennedy administration's inability to develop a coherent outlook and response cost it a priceless opportunity to understand the emerging phenomenon of nonalignment. 相似文献