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61.
The outcome of a speculative attack on the foreign exchange rate can be classified into three cases: (i) immediate depreciation of the nominal exchange rate, (ii) successful defense, or (iii) failed defense. This paper explores which of these outcomes yields the lowest cost in terms of output and unemployment in the short and medium run. Ex-ante the outcome of a speculative attack is uncertain, therefore the appropriate response of monetary authorities to a speculative attack depends on the cost of an immediate depreciation compared with that of the expected outcome of a currency defense. Our empirical analysis focuses on a sample of 73 emerging and developing countries over the 1960–2011 period. Our results indicate that an immediate depreciation is the policy response that is associated with a lower expected output loss and unemployment in the short run and it tends to be expansionary in the medium run. A defense, if successful, entails insignificant costs in the short run but, unlike an immediate depreciation, a successful defense is not expansionary in the medium run. If a defense fails, large output losses and an increase in unemployment ensue, at least in the short run. 相似文献
62.
We examine the effects of terrorist attacks on stock markets, using a dataset that covers all significant events and that directly relate to the major economies of the world. Our event study suggests that terrorist attacks produce mildly negative price effects. We compare these price reactions to those from an alternative type of unanticipated disaster, earthquakes, and find that price declines following terror attacks are more pronounced. However, in both cases prices rebound within the first week of the aftermath. We also compare price responses internationally and for separate industries, and find that reactions are strongest for local markets and for industries that are directly affected by the attack. Our results suggest that financial markets react strongly to terror events but then recover swiftly and soon return to business as usual. The September 11th attacks turn out to be the only event that caused long‐term effects on financial markets, especially in terms of industries' systematic risk. 相似文献
63.
一种无线传感器网络的路由异常检测方案 总被引:1,自引:0,他引:1
宋建华 《湖北财经高等专科学校学报》2009,21(4):53-55
路由安全问题是无线传感器网络的关键技术之一。本文提出了一种如何将异常检测技术应用到无线传感器网络的路由安全中的方案。 相似文献
64.
本文以2006—2016年上市的1397家公司为研究样本,实证检验了首日涨停板制度对新股解禁效应的影响。结果发现:首日涨停板制度实施期间发行的新股,解禁时有显著更差的市场表现,[-30,30]窗口期间的超额回报低至-8.43%,同时有更小的异常交易量和异常波动率;新股上市时股价高估程度越大、投资者情绪越高,首日涨停板制度对解禁效应的影响越强。上述结果支持了Hong et al.(2006)提出的“解禁与资产泡沫破灭”的理论,即首日涨停板制度导致新股发行后投机泡沫累积,投机泡沫破灭导致解禁时更大幅度的股价下跌。本文的研究结论补充了首日涨停板制度后果的文献,并对防范金融风险和完善新股市场化改革具有一定的政策参考价值。 相似文献
65.
A regime-switching approach to the study of speculative attacks: A focus on EMS crises 总被引:1,自引:0,他引:1
Maria Soledad Martinez Peria 《Empirical Economics》2002,27(2):299-334
This paper implements a regime-switching framework to study speculative attacks against EMS currencies during 1979–1993.
To identify speculative episodes, we model exchange rates, reserves, and interest rates as time series subject to discrete
regime shifts between two possible states: “tranquil” and “speculative”. We allow the probabilities of switching between states
to be a function of fundamentals and expectations. The regime-switching framework improves the ability to identify speculative
attacks vis-à-vis the indices of speculative pressure used in the literature. The results also indicate that fundamentals
(particularly budget deficits) and expectations drive the probability of switching to a speculative state.
First Version Received: October 2000/Final Version Received: June 2001 相似文献
66.
Narayanan Subramanian 《Journal of Evolutionary Economics》2005,15(3):335-350
We build an evolutionary model of currency crises incorporating learning through imitation and experimentation by heterogeneous agents. Foreign currency speculators in the model interact and learn over time through experimentation. Drawing on results from game theory, we show that the resulting dynamic converges to a unique long run equilibrium, in which the currency is “attacked” if the economic fundamentals are sufficiently adverse. Evolutionary selection is thus shown as a way to resolve the issue of indeterminacy of equilibria associated with models of currency crises.JEL Classification:
C63, F31, D83, C72I am grateful to Jasmina Arifovic, Peter Garber, Pravin Krishna, Blake LeBaron, Nidhiya Menon, Srinivas Thiruvadanthai and Tiemen Woutersen for useful remarks and suggestions. All errors remain my own. 相似文献
67.
SPECULATIVE CURRENCY ATTACKS AND BALANCE OF PAYMENTS CRISES 总被引:4,自引:0,他引:4
Abstract. This paper reviews the recent theoretical literature on collapsing exchange rate regimes. Using a combination of technique, intuition and realworld observation, we discuss the literature's main insights, point out some unresolved questions and offer suggestions for future research. The survey should be of interest to both specialists and non-specialists in the field of international macroeconomics. 相似文献
68.
Jack N. Kondrasuk 《Employee Responsibilities and Rights Journal》2004,16(1):25-35
The United States suffered an unprecedented loss of life on September 11, 2001, from what was labeled a terrorist attack. Mainly on the basis of data from professional association surveys and government agencies, it was found that the United States and many other countries of the world have been significantly affected by the events and aftermath of that morning's events. As an unprecedented attack on a country not usually affected by external terrorism, it allows a unique study of how terrorism can affect countries in the world. As a result of 9/11 there were significant changes in the U.S. economy and society that, because of the global economy and politics as well as the international war on terrorism, certainly have international consequences. Changes also occurred in most areas of human resource management as well as producing a much greater emphasis on having an overall business crisis management program. However, many of the initial changes appear to have diminished over time. The resultant changes, and lack of changes, produce rich questions for further research. 相似文献
69.
Alan Greenspan claims that modern financial innovations, especiallyfinancial derivatives, were major contributors to a Schumpeterianprocess of creative destruction which produceda high-growth New Economy and opposes their regulation.A different perspective emerges when it is recognised that theNew Economy followed the general contours of aSchumpeterian business cycle, and the role of modern financialinnovations is examined in that context. The authors argue thatthe primary role of financial derivatives has been in contributingto reckless finance and speculative excesses inthe second phase of that cycle, and that Schumpeter would favoursubjecting the use of derivatives to more regulation. 相似文献
70.
We use a novel nonparametric causality-in-quantiles test to study the effects of terror attacks on stock-market returns and volatility in G7 countries. We also use the novel test to study the international repercussions of terror attacks. Test results show that terror attacks often have significant effects on returns, whereas the effect on volatility is significant only for Japan and the UK for several quantiles above the median. The effects on returns in many cases become stronger in terms of significance for the upper and lower quantiles of the conditional distribution of stock-market returns. As for international repercussions, we find that terror attacks mainly affect the tails of the conditional distribution of stock-market returns. We find no evidence of a significant cross-border effects of terror attacks on stock-market volatility, where again Japan and the UK are exceptions as far as terror attacks on the US are concerned. Finally, our results continue to hold following various robustness checks involving model structure, lag-lengths and possible omitted variable bias. 相似文献