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   1282篇
  免费   124篇
  国内免费   40篇
  2024年   1篇
  2023年   2篇
  2022年   3篇
  2021年   8篇
  2020年   11篇
  2019年   15篇
  2018年   19篇
  2017年   31篇
  2016年   31篇
  2015年   15篇
  2014年   126篇
  2013年   109篇
  2012年   65篇
  2011年   125篇
  2010年   114篇
  2009年   107篇
  2008年   90篇
  2007年   98篇
  2006年   68篇
  2005年   85篇
  2004年   83篇
  2003年   86篇
  2002年   38篇
  2001年   30篇
  2000年   14篇
  1999年   16篇
  1998年   12篇
  1997年   6篇
  1996年   4篇
  1995年   6篇
  1994年   9篇
  1993年   3篇
  1992年   3篇
  1991年   3篇
  1990年   7篇
  1989年   3篇
排序方式: 共有1446条查询结果,搜索用时 31 毫秒
981.
It is often stated that technological change in the military field is characterised by the introduction of radical innovations rather than by incremental processes of technological change. This article illustrates the diversity of military innovation by arguing that technological change in missiles systems is dominated by incremental change. While some large weapons platforms display the design rigidities normally associated with complex systems, missiles are characterised by “flexible modularity”. Flexible modularity facilitates the continuous introduction of upgrades, and makes missile systems amenable to gradual technological change. Besides, it has significant implications for the future role of missile systems, and poses special problems for missile disarmament and technology control initiatives.  相似文献   
982.
This survey article focuses on defence economics issues and provides data and analysis on the Federal Republic of Yugoslavia's (FRY) defence policy, defence spending, the size of its armed forces, its defence industries and the cost of the civil war. The main section is devoted to the period from 1990 to the present and deals with the following aspects: the situation after the break‐up of the former Yugoslavia, general economic data; the cost of the civil war, the defence budget; the armed forces; the manufacture of armaments and the structure of the defence industry.  相似文献   
983.
This study analyses an arms race between South and North Korea over the period 1963–2000. Despite the strategic importance of the Korean Peninsula, the arms race between South and North Korea has rarely been studied. In this study, the South–North arms race is empirically estimated using Richardson’s action–reaction model. The pattern of South–North arms race between the Cold War (1963–1989) and the post‐Cold War eras (1990–2000) as well as the existence of an arms race is examined comparing both countries’ defence spending, number of military personnel and tactical aircraft.  相似文献   
984.
Using an event study approach to analyze stock market data from the United States, I investigate how regulations on conflict minerals sourced in the Democratic Republic of the Congo were perceived by investors. I find that for a subset of mining companies, stock returns were abnormally high when regulations in the US became more likely. I also find that returns were higher for communications equipment manufacturing companies when strong regulations in the DRC were announced. I argue that these responses were due to the competitive environments faced by each of these company types. These findings relate to debates surrounding the effects of the conflict mineral regulations. While some critics argue that reporting requirements were tantamount to a ban on minerals from the DRC, I find that stock returns for a subset of companies were sensitive to legislation in the DRC after legislation became law in the US, suggesting that market participants did not expect a complete trade ban on regulated mining and trading activities.  相似文献   
985.
986.
NEW TERRORISM     
New or contemporary international terrorism associated with Islamic fundamentalism and the struggle against Zionism and American interests is a recent phenomenon in Kenya, different to that experienced during the struggle against colonialism. Many explanations have been offered as to why Kenya is being targeted, but have not sufficiently explored its close relationship with the West—especially Britain and the United States, the perceived connection between Israel and the former Presidency of Daniel Arap Moi, domestic forces and government policy. Externally the most important explanations for the increase in regional terrorism are the three waves of global terrorism since 1967, the most recent and significant of which is associated with Osama bin Laden and the Palestinian Intifada. These events reverberated in the region, Sudan and Somalia in particular, but also internally. Both internal and external attribution factors explain the resurgence of new terrorism in Africa. In the case of Kenya, terrorist attacks are associated with the country's internal domestic processes and a naïve approach to broader international issues.  相似文献   
987.
Despite both regional and international efforts to establish a weapons of mass destruction–free zone (WMDFZ) in the Middle East, regional support beyond mere rhetoric seems unattainable. The lack of commitment to WMD disarmament results from the complexity of regional security dynamics, which are characterized by a high level of weaponization and crosscutting conflicts. This article examines a strategy for WMD disarmament in the Middle East. First, such a strategy must reflect the motives underlying a state's WMD aspirations. Security and prestige may be identified as two motives that affect the acquisition, and thus also the abandonment, of WMD. Second, Egypt, Iran, Israel, and Syria are important actors because their reasons for desiring WMD cannot be considered apart from each other, and progress will consequently depend on the inclusion of all these actors. In this regard, we recommend the establishment of a parallel process between efforts to establish a WMDFZ and peaceful relations in the Middle East. Solving central problems, like the lack of political determination and security cooperation, is vital to create consensus on the final framework of a zone. This study suggests a way forward by analyzing the central causes of conflict in the region and recommending ways to resolve them in order to establish a WMDFZ.  相似文献   
988.
ALL TOGETHER NOW     
Banning Weapons of Mass Destruction, by Frederick N. Mattis. Praeger Security International, 2009. 129 pages, $39.95.  相似文献   
989.
President Barack Obama and an array of other Western leaders continue to assert that the spread of weapons of mass destruction (WMD) to non-state actors is one of most pressing challenges to global security today. Yet, Western efforts to engage governments—particularly governments across the global South—in a practical nonproliferation dialogue have largely yielded disappointing results. This viewpoint examines the need for a new strategy to engage the developing world in nonproliferation programs. It argues that strategies focused strictly on WMD nonproliferation are unsustainable, and ultimately are destined for failure. An alternative “dual-benefit” nonproliferation engagement strategy utilizes the enlightened self-interest of partner governments needed to achieve broad-based buy-in among all partners. In a concluding section, we recommend that the “Group of 8” Global Partnership Against the Spread of Weapons and Materials of Mass Destruction standardize this model of nonproliferation engagement as it sets out to identify and fund WMD nonproliferation capacity-building initiatives beyond the states of the former Soviet Union.  相似文献   
990.
This article assesses the prospects for a strategy of incrementalism to lead to achievement of the core bargain of the Treaty on the Non-Proliferation of Nuclear Weapons: non-nuclear weapon states' nuclear nonproliferation in exchange for nuclear weapon states' nuclear disarmament to the point of “global zero.” Game theory, prospect theory, and liberal international theory are used to evaluate the potential of a strategy of incrementalism. While separately each has insights to offer, it is when all three theoretical approaches are used in tandem that meaningful explanatory gains emerge. The article concludes that incrementalism probably cannot lead to complete nonproliferation and global nuclear zero. Instead, signal events (as described by prospect theory) are needed to “punctuate” incremental processes in negotiations (best explained by liberal international theory) in order to move past hindrances such as international structural constraints (exemplified by game theory) and the conservative risk-taking propensities of state elites (described by prospect theory).  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