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51.
This article introduces integro-differential equations as a new technique to study terrorism dynamics. An integro-differential equation is a mathematical expression that contains derivatives of the required function and its integral transforms. The technique is applied to two different dynamic models in terrorism: terrorism and tourism, and terrorist innovations. In the first model the number of tourists that appears in an integral term and also in a derivative term is impacted by the number of terrorists. In the second model the integro-differential equation for terrorist innovations relates them to terrorist attacks. The article shows how to solve, analyze, interpret, and deal with integro-differential equations. Integro-differential equations shed light on aspects of the models ignored when other techniques are used. This is particularly important for the evaluation of current counterterrorist policies, as well as to the formulation of new ones.  相似文献   
52.
Abstract

The mandate of South Africa's recently appointed National Planning Commission includes addressing ‘defence and security matters’. This article seeks to outline the central elements of the threat environment facing South Africa in the foreseeable future. It is argued that South Africa faces no meaningful existential threat from conventional military forces but that its security forces will need to be prepared to address possible raids and attacks by conventional military forces both on home soil and on vital interests beyond the nation's borders. Other threats highlighted include the threats posed by potential insurgencies, by terrorism, and by crime, social unrest and banditry. Also addressed is the danger of so-called hybrid threats, in which two or more of the single threat types outlined here are combined. Finally, the article challenges the National Planning Commission to rethink South Africa's policy on peace operations in the light of the need to ensure the safety and security of the nation's citizenry.  相似文献   
53.
In Africa, most of the present conflicts are civil, intra-state wars where belligerent groups use guerrilla tactics to achieve various political, economic or ideological objectives. The atrocities and the effect of these on-going wars on innocent civilians, human suffering, poverty and development are beyond comprehension. Not surprisingly, the majority of current peace operations are in Africa, with more than 70 countries contributing forces to these conflict zones. On the continent, South Africa has come to assume a leading role in peace operations and is now a major troop-contributing country to UN and AU missions. In the past 11 years, the South African National Defence Force (SANDF) has taken part in no fewer than 14 peace missions. This article provides a brief background of the conflicts in Burundi, the Democratic Republic of Congo (DRC) and Sudan, the different United Nations (UN) and African Union (AU) mandates under which peacekeepers had to operate as well as their objectives, and the extent of South Africa's involvement in the various missions. In the last section, the major challenges, that these operations have posed are highlighted.  相似文献   
54.
55.
This article critiques recent articles in Foreign Affairs and International Security that argue that in the foreseeable future the United States could acquire an assured first-strike capability vis-à-vis Russia and China thanks to technological improvements in U.S. nuclear delivery systems and a general decline in the numbers and capabilities of Russian nuclear forces. Notwithstanding these articles, this analysis finds that mutual deterrence will persist regardless of the scale of possible future imbalances because deterrence is a highly flexible phenomenon. The pertinent question is not whether the United States will be able, in a surprise first strike, to cripple severely Russian response capabilities, but whether political stakes in any foreseeable conflict could justify the risk of even a small retaliatory strike on the United States. This article also assesses whether the Foreign Affairs and International Security articles could inadvertently exacerbate an already highly charged anti-American sentiment in Russia, possibly laying the foundation for a revitalization and expansion of the Russian nuclear arsenal.  相似文献   
56.
The stage may be set for what could be a historic turning point in America's reliance on nuclear weapons to meet its fundamental national security interests. Proponents of a refurbished nuclear stockpile and infrastructure are convinced that nuclear weapons will remain central to U.S. security interests, yet they admit that there is no national consensus on the need for and role of nuclear weapons. Nuclear opponents are gravely concerned that to the extent nuclear refurbishment creates a global perception that nuclear weapons remain essential instruments, it will eviscerate nuclear nonproliferation measures precisely at a time when nuclear ambitions are growing. Moreover, opponents see deterrence through advanced conventional weapons as decisively more credible than any nuclear alternative. With hopes of elevating discourse to the national level, this article examines the key current arguments pro and con within the specialist community and forecasts changes in the U.S. nuclear arsenal over the next decade. It concludes with a brief prognosis on prospects for complete nuclear disarmament.  相似文献   
57.
Advocates of the preventive use of force against emerging nuclear, biological, or chemical programs often look to the allegedly successful 1981 Israeli airstrike against Iraqi nuclear facilities at Osiraq. According to the conventional wisdom, this attack may have prevented Iraq from going nuclear before Operation Desert Storm in 1991. This article assesses the claim that the 1981 attack substantially delayed Iraqi acquisition of nuclear weapons, both by revisiting older debates and by introducing new evidence from Iraqi scientists. The article casts doubt on the conclusion that the attack was successful for three reasons: (1) the reactor itself was not well equipped to generate plutonium for a nuclear weapon; (2) illegal plutonium production would likely have caused a cutoff in the supply of nuclear fuel and an end to weapons activities; and (3) the attack may have actually increased Saddam's commitment to acquiring weapons. These conclusions have implications for the Bush Doctrine, as the lack of success in 1981 casts doubt on the possible success of future attacks against nuclear programs.  相似文献   
58.
UNDER THE RADAR?     
Missile Contagion: Cruise Missile Proliferation and the Threat to International Security, by Dennis M. Gormley. Praeger Security International, 2008. 272 pages, $54.95.  相似文献   
59.
ABSTRACT

Relations between the United States and Russia are in a prolonged downward spiral. Under these circumstances, cooperation on nuclear issues—once a reliable area of engagement even in difficult political environments—has all but completely halted. There are urgent reasons to find a way out of this situation, particularly the expiration of the New Strategic Arms Reduction Treaty in 2021. However, seemingly intractable disagreements about noncompliance with the Intermediate-range Nuclear Forces Treaty and US ballistic-missile defense, compounded by the Ukraine crisis, the conflict in Syria, and the accusations of Russian interference in the US election of 2016, threaten the future of arms control. Against this backdrop, policy makers and practitioners should identify ways to re-engage on nuclear issues now so they can be ready to implement them as soon as feasible. This article considers how the Comprehensive Nuclear-Test-Ban Treaty (CTBT) could serve as a platform for US–Russia cooperation on nuclear issues when circumstances permit. Taking into account the challenges posed by ongoing US non-ratification, it identifies a menu of CTBT-related activities short of ratification that the two countries could undertake together. It explores how joint work on this issue would advance shared US and Russian interests while helping to create the circumstances necessary for further arms-control work.  相似文献   
60.
ABSTRACT

Since the 1950s, the United States has engaged in nuclear sharing with its NATO allies. Today, 150-200 tactical nuclear weapons remain on European soil. However, the Treaty on the Non-proliferation of Nuclear Weapons (NPT) prohibits the transfer of nuclear weapons to non-nuclear weapon states. The potential discrepancy between text and practice raises the question of how the NPT's negotiators dealt with NATO's nuclear-sharing arrangements while drafting the treaty that would eventually become the bedrock of the international nonproliferation regime. Using a multitiered analysis of secret negotiations within the White House National Security Council, NATO, and US-Soviet bilateral meetings, this article finds that NATO's nuclear-sharing arrangements strengthened the NPT in the short term by lowering West German incentives to build the bomb. However, this article also finds that decision makers and negotiators in the Lyndon B. Johnson administration had a coordinated strategy of deliberately inserting ambiguous language into drafts of Articles I and II of the Treaty to protect and preserve NATO's pre-existing nuclear-sharing arrangements in Europe. This diplomatic approach by the Johnson administration offers lessons for challenges concerning NATO and relations with Russia today.  相似文献   
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