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排序方式: 共有457条查询结果,搜索用时 15 毫秒
221.
This article analyzes the suicide bomb attacks on four London transportation targets on 7 July 2005 and the plot to bomb simultaneously at least seven American and Canadian passenger airliners as they departed from London's Heathrow Airport. American, British, and Pakistani authorities thwarted this planned attack in August 2006. Both incidents are among the most important Al Qaeda operations in recent years. Initially, they were dismissed by the authorities, pundits, and the media alike as the work of amateur terrorists—untrained “bunches of guys” acting entirely on their own with no links to Al Qaeda. Subsequent evidence, however, has come to light, which reveals clear links to senior Al Qaeda commanders operating in Pakistan's lawless frontier border area with Afghanistan.  相似文献   
222.

The United States has long been frustrated in fighting insurgencies. An almost unbroken string of mostly ill-fated experiences in effectively prosecuting this unique blend of political-military operations can be traced backward over nearly half a century from the situation in Iraq today to the early 1960s when the U.S. became heavily engaged in Indochina's wars. Vietnam and Iraq thus form two legs of a historically fraught triangle—with America's experiences in El Salvador in the 1980s providing the connecting leg. The aim of this article is not to rake over old coals or rehash now familiar criticism. Rather, its purpose is to use the present as prologue in order to understand in counterinsurgency terms where we have gone wrong in Iraq; what unique challenges the current conflict in Iraq presents to the U.S. and other coalition military forces deployed there; and what light both shed on future counterinsurgency planning, operations and requirements.  相似文献   
223.
Observers argue that the business of news is responsible for worsening the coverage of terrorism, but exactly how economic considerations influence coverage is controversial. Based on an analysis of over 1600 articles from The Washington Post and USA Today, we find that concerns about the effects of economic pressures on terrorism reporting are exaggerated. The business climate affects coverage, but the long-term impact of market pressures on coverage is modest. Articles about terrorist violence are increasingly prominent, but coverage of counterterrorism remains robust. Efforts to inoculate the press against the worst excesses of the market are unnecessary.  相似文献   
224.
This article assesses the scope and nature of the current terrorist threat to the United States and suggests a strategy to counter it. Al-Qaeda continues to pose the most serious terrorist threat to the U.S. today. If the September 11, 2001 attacks have taught us anything, it is that al-Qaeda is most dangerous when it has a sanctuary or safe haven from which to plan and plot attacks. Al-Qaeda has acquired such a sanctuary in Pakistan's Federal Administered Tribal Areas (FATA) and its North-West Frontier Province (NWFP) and surrounding environs. Accordingly, the highest priority for the new American presidential administration must be to refocus our—and our allies'—attention on Afghanistan and Pakistan, where al-Qaeda began to collapse after 2001, but has now re-grouped. This will entail understanding that al-Qaeda and its local militant jihadi allies cannot be defeated by military means alone. Success will require a dual strategy of systematically destroying and weakening enemy capabilities—that is, continuing to kill and capture al-Qaeda commanders and operatives—along with breaking the cycle of terrorist recruitment among radicalized “bunches of guys” as well as more effectively countering al-Qaeda's effective information operations. The U.S. thus requires a strategy that harnesses the overwhelming kinetic force of the American military as part of a comprehensive vision to transform other, non-kinetic instruments of national power in order to deal more effectively with irregular and unconventional threats. This article first discusses the scope and details of the terrorist threat today and then proposes a counterterrorism strategy for the new presidential administration. It focuses first on creating a micro approach to address the deteriorating situation in both Afghanistan and Pakistan. It then considers the requirements of a broader macro strategy to counter terrorism and insurgency.  相似文献   
225.
History offers valuable lessons to housing policymakers. For those who would devise new low-income housing programs during today's trying economic circumstances, it is helpful to study the strategies that succeeded in achieving low-income housing programs in past difficult times. This article, History Lessons for Today's Housing Policy, examines the political processes that led to the adoption of new low-income housing policies during four political crises. The four crises were the Great Depression of the 1930s, the post-World War II housing shortage, the urban crisis of the 1960s, and the policy crisis of the 1970s. Among other history lessons, the article reveals that well-organized political support, especially from large institutions, is crucial to achieving distinctly different new programs; that decentralized programs are more politically resilient than centralized programs; that programs that appeal to the nation's broad middle-class are most popular; and that policy research is valuable but that politics trumps research.  相似文献   
226.
A new presumptive color test for ketamine hydrochloride is reported. The test is a modification of the cobalt thiocyanate test currently used for cocaine and involves basifying samples rather than acidifying them. The two-step procedure for liquids and three-step procedure for powdered samples are straightforward, definitive, and utilize reagents commonly used in forensic drug analysis. The test works on ketamine hydrochloride in both powder and liquid form and has a sensitivity of c. 1.25 mg. Performing the test with numerous other controlled substances and related chemicals demonstrates the test to be highly selective.  相似文献   
227.
This paper describes two analytical techniques used to separate and quantify gamma-hydroxybutyrate (GHB) and gamma-hydroxyvalerate (GHV). The first technique was a N,O-bis(trimethylsilyl)triflouro-acetimide-trimethylchlorosilane derivatization, followed by gas chromatography/mass spectrometry analysis using an HP-5 capillary column at a rate of 1.0 mL/min with a run time of 9.25 min. This technique was found to be sensitive (LOD 1 pg on column) and gave a low average error (5%) in a beverage study. When supplemented by a surrogate spike, the method yielded 97% analyte recovery from beverages. The second technique was high-performance liquid chromatography/UV (HPLC/UV) using a C-18 column with a (20:80% v/v) methanol:dibasic phosphoric buffer (10 mM, pH 3) at a rate of 1.00 mL/min with a run time of 7.5 min. UV detection occurred at 254 nm. This method was found to be less sensitive (LOD 0.05 microg on column) for direct analysis of aqueous samples. To remove interferences seen in the beverage study, a liquid-liquid extraction before HPLC analysis was tested. However, a decreased sensitivity (LOD 100 microg on column) and irreproducible peak profiles resulted.  相似文献   
228.
This experiment tested the ability of undergraduate mock jurors (N=295) to draw appropriate conclusions from statistical data on the diagnostic value of forensic evidence. Jurors read a summary of a homicide trial in which the key evidence was a bullet lead "match" that was either highly diagnostic, non-diagnostic, or of unknown diagnostic value. There was also a control condition in which the forensic "match" was not presented. The results indicate that jurors as a group used the statistics appropriately to distinguish diagnostic from non-diagnostic forensic evidence, giving considerable weight to the former and little or no weight to the latter. However, this effect was attributable to responses of a subset of jurors who expressed confidence in their ability to use statistical data. Jurors who lacked confidence in their statistical ability failed to distinguish highly diagnostic from non-diagnostic forensic evidence; they gave no weight to the forensic evidence regardless of its diagnostic value. Confident jurors also gave more weight to evidence of unknown diagnostic value. Theoretical and legal implications are discussed.  相似文献   
229.
This study examined self-reported early exposure to violence in the family of origin and positive attitudes towards marital violence as risk factors in court-referred Chinese immigrant male batterers (N = 64) versus controls (N = 62). Early exposure to violence was positively correlated with marital violence, but it alone did not differentiate the batterers from the controls, as both groups were widely exposed to it. While it was significantly correlated with marital violence in the batterer group, it was significantly correlated with depression in the control group. Positive attitudes towards marital violence were not only correlated with marital violence but also sufficient to differentiate the batterers from the controls. It also partially mediated the effect of early exposure to violence on marital violence. These two risk factors together accounted for 21.9% of the variance in marital violence over and above sociodemographic variables and marital dissatisfaction. Research and treatment implications based on these findings were outlined.
Xiaochun JinEmail:
  相似文献   
230.
At the time of the 9/11 attacks, Washington was embarking on a defense transformation emphasizing missile defense, space assets, precision weaponry, and information technology. This transformation proved irrelevant to the national security threats we now face, with the emergence of nontraditional adversaries pursuing “complex irregular warfare.” U.S. forces will have to assume a much more expeditionary character to successfully deal with Islamists’ complex irregular warfare. The March 2005 U.S. National Defense Strategy provides a balance to the longstanding American military emphasis on major-theater war, but it remains to be seen whether the military's new interest in operations other than conventional, major-combat operations will last or if it will diminish as soon as a new peer competitor rises, allowing the Pentagon to return to its more familiar paradigm.  相似文献   
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