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   272篇
  免费   8篇
财政金融   36篇
工业经济   14篇
计划管理   36篇
经济学   46篇
综合类   1篇
运输经济   2篇
旅游经济   5篇
贸易经济   83篇
农业经济   12篇
经济概况   44篇
邮电经济   1篇
  2023年   3篇
  2022年   3篇
  2021年   7篇
  2019年   3篇
  2018年   9篇
  2017年   10篇
  2016年   11篇
  2015年   6篇
  2014年   12篇
  2013年   24篇
  2012年   19篇
  2011年   14篇
  2010年   7篇
  2009年   14篇
  2008年   10篇
  2007年   14篇
  2006年   7篇
  2005年   7篇
  2004年   2篇
  2003年   4篇
  2002年   4篇
  2001年   5篇
  2000年   3篇
  1999年   5篇
  1998年   3篇
  1997年   2篇
  1996年   2篇
  1995年   4篇
  1994年   2篇
  1993年   3篇
  1991年   4篇
  1989年   2篇
  1987年   4篇
  1986年   2篇
  1985年   2篇
  1984年   2篇
  1983年   4篇
  1982年   3篇
  1981年   4篇
  1980年   6篇
  1979年   4篇
  1978年   2篇
  1976年   7篇
  1975年   2篇
  1974年   1篇
  1973年   3篇
  1968年   2篇
  1927年   1篇
  1926年   1篇
  1922年   1篇
排序方式: 共有280条查询结果,搜索用时 15 毫秒
51.
It has become increasingly popular to advise investors to relocate their funds from a primarily stock portfolio to a primarily bond portfolio as they get older. However, the well-known decision rules such as mean–variance or stochastic dominance rules are unable to explain this common practice. Almost stochastic dominance (ASD) and almost mean–variance (AMV) approaches are used to examine the dominance of stock and bond portfolios. ASD and AMV rules unambiguously support the popular practice of advising higher stock to bond ratio for long investment horizons. Hence, we provide an explanation to the practitioners’ recommendation within the expected utility paradigm.  相似文献   
52.
Recent literature (Boyd and De Nicoló, J Finance 60:1329–1343, 2005) has argued that competition in the loan market lowers bank risk by reducing the risk-taking incentives of borrowers. Using a model where competition arises from falling switching costs for entrepreneurs, we show that the impact of loan market competition on banks is reversed if banks can adjust their loan portfolios. The reason is that when borrowers become safer, banks want to offset the effect on their balance sheet and switch to higher-risk lending. They even overcompensate the effect of safer borrowers because loan market competition erodes their franchise values and thus increases their risk-taking incentives.  相似文献   
53.
It is the season of dollar panic.These panic-mongers are varied: goldbugs, fiscal hawks and many others agree that the dollar, the dominant currency since the first world war, is on itsdeath bed. Hyperinflationary collapse  相似文献   
54.
Onshore wind energy utilisation in Germany has developed very dynamically in the last decade. This has mainly been driven by the renewable energy laws that systematically support the expansion of renewable energy in the electricity sector. In 2009 a revised law with increased feed-in tariffs for wind energy has come into force. Existing studies already predict a wide range of development patterns under the Renewable Energy Sources Acts 2000 and 2004. This paper investigates the long term impact of different feed-in tariffs implemented by the legislative authorities and it provides corresponding future development patterns of onshore wind energy utilisation in Germany. The underlying System Dynamics model considers technical as well as economic conditions and constraints. The approach and the model’s results are contrasted with other published predictions qualitatively and quantitatively. This comparison shows that the model’s outcome lies in the range of predictions by existing studies, but also shows some interesting differences.
Zusammenfassung  Die Entwicklung der Windenergienutzung in Deutschland wahrend der letzten Dekade verlief sehr dynamisch. MagBgeblich dafur war die systematische Forde-rung mittels der Erneuerbare Energien Gesetze (EEG) bzw. deren Vorlaufer. Vom Jahr 2009 an gilt ein uberarbeitetes Gesetz, welches u.a. erhohte Einspeisever-gutungen furWindenergie beinhaltet.Vorliegende Studien, die sich mit derzu-kunftigen Entwicklung auseinandersetzten, zeigen bereits deutlich unterschied-liche Szenarien fur die Entwicklung unter dem EEG 2000 und 2004. Diese Arbeit setzt sich mit den langfristigen Auswirkungen der verschiedenen vom Gesetz-geber festgelegten Einspeisetarife auseinander und stellt entsprechend unter-schiedliche Ausbauszenarien fur die deutsche Onshore Windenergienutzung dar. Das zugrunde liegende System Dynamics Modell berucksichtigt dabei sowohl technische als auch okonomische Parameter. Der Ansatz sowie die Ergebnisse werden anderen veroffentlichten Prognosen gegenubergestellt. Die Ergebnisse liegen innerhalb der Spannbreite der anderen berucksichtigten Studien, zei-gen jedoch auch interessante Unterschiede.
  相似文献   
55.
Modality analysis is a text analysis methodology that affords comparisons of how people from distinct cultural contexts differ in their accounts of why one or more of their numbers find specific activities possible, impossible, inevitable, or contingent. The technique is built around a two-part semantic grammar, the application of which involves the identification of modal clauses in texts, the classification of these clauses according to their modal forms, and the identification of rationales associated with the clauses’ modalities. We show that with sufficient training the method affords high interrater agreement. After providing a few tips on data-collection strategies, results are presented from a modality analysis of editorials sampled from the Arab newspaper, Al Riyadh, and the Hindi newspaper, Hindustan. The analysis illustrates how modal expressions can be used in locating well-known (e.g., Islamic and Hindu) cultural characteristics from among the vast quantities of discourse that societies continuously generate.  相似文献   
56.
This paper introduces optimal matching analysis (OMA) to the field of top management research. With this method, we develop six career patterns of top management team (TMT) members from five countries based on their international experience, organizational tenure and professional experience. The results provide strong support for the significance of these patterns, since each country (Denmark, Germany, Japan, the United Kingdom and the United States) shows one to four predominant career patterns of their managers and the occurrence of these patterns also differs significantly between the fields of activity within the TMT (chairperson, head of a division, primary activities and support activities).  相似文献   
57.
Much effort has been dedicated to fighting wildlife crime with modest results. This paper focuses on marine wildlife crime, which suffers from a certain level of neglect due to terrestrial bias (a predominant focus on land animals). Despite legislative and enforcement efforts, there has been little integration of marketing techniques to curtail marine wildlife crime. For these reasons, we set out to study current issues surrounding marine wildlife crime by conducting interviews with three experts in areas of marine education, research, and legislation. The interviews provide an overview of the threats to marine wildlife, aid in the development of a classification of marine wildlife crime, and provide strategies as to what marketing actions may be useful to reduce it.  相似文献   
58.
59.
60.
We examine the lead and lag relation between equity and credit default swap (CDS) markets. We find that price discovery in equity markets only leads CDS markets following aggregate positive news and not so following other news. While difficult to reconcile with standard asset pricing theories, asymmetric price adjustment is common in goods markets, arising from intermediary power. We provide an explanation for this asymmetry based on dealers exploiting informational advantages vis‐à‐vis investors with hedging motives. Consistent with this explanation, we find that the patterns we document are related to firm‐level proxies for hedging demand, as well as economy‐wide measures of information asymmetries.  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