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   159篇
  免费   11篇
财政金融   22篇
工业经济   17篇
计划管理   45篇
经济学   26篇
旅游经济   5篇
贸易经济   33篇
农业经济   2篇
经济概况   19篇
邮电经济   1篇
  2022年   3篇
  2021年   1篇
  2020年   3篇
  2019年   6篇
  2018年   8篇
  2017年   5篇
  2016年   7篇
  2015年   2篇
  2014年   4篇
  2013年   25篇
  2012年   13篇
  2011年   3篇
  2010年   3篇
  2009年   1篇
  2008年   4篇
  2007年   11篇
  2006年   2篇
  2005年   3篇
  2004年   2篇
  2003年   4篇
  2002年   3篇
  2001年   2篇
  2000年   1篇
  1999年   2篇
  1998年   3篇
  1997年   3篇
  1996年   2篇
  1995年   3篇
  1994年   2篇
  1993年   2篇
  1992年   1篇
  1991年   3篇
  1990年   1篇
  1988年   2篇
  1985年   4篇
  1984年   2篇
  1983年   2篇
  1982年   2篇
  1981年   2篇
  1980年   1篇
  1979年   1篇
  1978年   2篇
  1976年   1篇
  1975年   2篇
  1974年   3篇
  1973年   2篇
  1971年   1篇
  1969年   1篇
  1966年   2篇
  1956年   1篇
排序方式: 共有170条查询结果,搜索用时 546 毫秒
121.
Herman M. Weil 《Futures》1974,6(6):477-485
This article is directed at the need for the development of forecasting techniques for non-environmental issues, especially political and military concerns. It describes a major research project in this area completed by Dr Weil and his colleagues at Consolidated Analysis Centers, Inc. The article defines the concepts and operational measures forecast, describes the development of a regression-based forecasting model and simulation experiments performed on that model, and presents selected long-range forecasts of significant political, economic, military, and social variables for the European region.  相似文献   
122.
123.
This paper is a comment on P. C. B. Phillips, ‘To criticise the critics: an objective Bayesian analysis of stochastic trends’ [Phillips, (1991)]. Departing from the likelihood of an univariate autoregressive model different routes that lead to a posterior odds analysis of the unit root hypothesis are explored, where the differences in routes are due to the different choices of the prior. Improper priors like the uniform and the Jeffreys prior are less suited for Bayesian inference on a sharp null hypothesis as the unit root. A proper normal prior on the mean of the process is analysed and empirical results using extended Nelson-Plosser data are presented.  相似文献   
124.
Building on previous research at the experimental and national scales, this study was carried out at the local scale over a four-year period on three farms of reference: one specialized dairy farm ‘Vaquería 10’ (33.7 ha) and two mixed farms, ‘Remedio’ (9.4 ha) and ‘La Sarita’ (47 ha). All three farms are located in the San Antonio de Los Baños municipality, Havana, Cuba. This study illustrates the application of the Ecological Framework for the Assessment of Sustainability (ECOFAS). This methodology consists of a cyclical structure of six steps, aimed at guiding the process of implementing innovative mixed (crop–livestock) farming strategies. Local stakeholders (farmers, researchers, extension officers and representatives of the ministry of agriculture in the municipality) identified alternative strategies for agriculture in the region, based on the critical technological, environmental and socio-economic factors constraining the current performance of farming systems. The results show that implementation of ‘best practice’ mixed farming systems management strategies in the region potentially can lead to a strong positive impact on land productivity, food self-sufficiency as well as improve socio-economic performance.  相似文献   
125.
Zusammenfassung über die Auswahl der optimalen Industrie. Eine über-prüfung einer Kontroverse. — Die vorliegende Abhandlung überprüft zwei widersprechende Strategien bezüglich der Auswahl der Aktivit?t, die ein Einkommensziel optimiert, bei gebührender Berücksichtigung der Besch?ftigung, die von der Ausstattung mit Ressourcen und von technischen Beschr?nkungen abh?ngt. Gegenstand der Betrachtung ist die Volkswirtschaft, aber es wird auch der weltwirtschaftliche Zusammenhang berücksichtigt, in dem derartige Volkswirtschaften operieren. Der Aufbau des Aufsatzes ist folgender: Im ersten Kapitel wird das Problem zur Diskussion gestellt, im zweiten Abschnitt werden die beiden entgegengesetzten Strategien für die Auswahl des optimalen Sektors beschrieben. Im dritten Teil behandelt der Autor beide Strategien theoretisch, diskutiert ihre relativen Vorzüge und entscheidet sich zugunsten einer von beiden. Im vierten Teil wird die empirische Relevanz der vom Autor bevorzugten Strategie überprüft. Im fünften Teil werden die Regeln für die praktische Auswahl der optimalen Aktivit?t aufgrund der gew?hlten Strategien dargestellt und erl?utert. Die Abhandlung wird durch dasechste Kapitel beschlossen, das die gefundenen L?sungen kommentiert und mit einer Gesamtstrategie der industriellen Raumplanung vergleicht, die an anderer Stelle dargelegt wurde, um zu einer weltweiten Erkl?rung von Einkommens- und Besch?ftigungsfragen der beteiligten L?nder zu gelangen.
Résumé De la sélection de l’industrie optimale. L’examination d’une controverse. — Dans cet article, on examine deux stratégies contradictoires pour choisir l’activité qui optimaliserait un projet de revenu, en tenant düment compte de l’emploi, qui dépend de l’équipement et des restrictions techniques. C’est l’économie nationale dont on s’occupe, mais on tiendra compte du contexte international dans lequel une telle économie opère. La disposition de l’article est la suivante: Dans la section I, on expose le problème, dans la section II, on décrit les deux stratégies contradictoires pour la sélection du secteur optimal. Dans la section III, l’auteur qualifie ces deux stratégies au point de vue théorique, en discutant leurs mérites relatifs et en se décidant pour l’une des deux. Dans la section IV, l’importance empirique de la stratégie choisie par l’auteur est examinée. Dans la section V, on indique et explique les règles pour la selection pratique de l’activité optimale suivant la stratégie choisie. L’article se termine avec la section VI, oú l’on commente les solutions, obtenues, tout en les comparant avec une stratégie générale de location industrielle, qui a été exposée ailleurs, afin d’arriver á une explication mondiale des problèmes de revenu et d’emploi dans les pays en question.

Resumen Sobre la selección de la industria óptima. El examen de una controversia. — El présente estudio examina dos estrategias contradictorias con respecto de la actividad que optimiza la meta de ingreso, teniendo debidamente en cuenta el grado de empleo que dépende de la disposici?n de recursos y de restricciones técnicas. El objeto del análisis es la economla nacional, pero se considéra también el marco mundial en el que operan dichas economlas. El artfculo comprende las siguientes partes: En el primer capitulo se discute el problema; en el segundo cap?tulo se describen las dos estrategias contradictorias para la selección de un sector Optimo. En el tercer capitulo el autor analiza teóricamente ambas estrategias, discute sus ventajas comparativas y se decide por una de ellas. En el cuarto capitulo se examina la relevancia empirica de la estrategia escogida. En el quinto cap?tulo se presentan y explican las reglas a adoptar para la selección práctica de la actividad optima. El articulo concluye con un resumen de los resultados y una comparación con una estrategia general de planification regional (la cual fué presentada en otra parte) con el fin de llegar a una explicación de problemas de ingreso y de empleo en los paises en cuestión.

Riassunto Sulla scelta dell’industria ottimale. La verifica di una controversia. — II présente articolo verifica due stratégie contraddittorie relative alla scelta dell’attivitá che ottimizza un obbiettivo di reddito, con dovuta considerazione dell’occupazione che dipende dalla dotazione con risorse e da limitazioni teeniche. Oggetto délia considerazione è l’economia, ma viene tenuto conto anche délia connessione économico-mondiale in cui operano économie di tal génère. La struttura dell’articolo è la seguente: Nel I capitolo è posto in discussione il problema, nel II capitolo sono descritte le due opposte stratégie per la scelta del settore ottimale. Nel III capitolo l’autore tratta teoreticamente le due stratégie, discuto i loro relativi pregi e si decide a favore di una délie due. Nel IV viene vagliata la rilevanza empirica délia strategia preferita dall’autore. Nel V sono rappresentate ed illustrate le regole per la scelta pratica dell’attivitá ottimale in base alle teorie scelte. Chiude l’articolo il VI capitolo che commenta le soluzioni trovate e le confronta con una strategia globale délia progettazione di spazio industriale, che fu esposta in altro luogo, per giungere ad una spiegazione di portata mondiale di questioni di reddito ed occupazione dei Paesi partecipanti.
  相似文献   
126.
With the recent spate of scandals resulting from the questionable behavior of corporate leaders, there have been calls for various governance mechanisms including ethics codes to guide executive decision‐making. However, the extent to which ethics codes are actually used by executives when making strategic choices as opposed to being merely symbolic is unknown. We develop our hypotheses by combining stakeholder management theory and the theory of planned behavior, and test them with a survey of 302 senior financial executives (e.g., CFOs, VPs of Finance). We find that financial executives are more likely to integrate their company's ethics code into their strategic decision processes if (a) they perceive pressure from market stakeholders to do so (suppliers, customers, shareholders, etc.); (b) they believe the use of ethics codes creates an internal ethical culture and promotes a positive external image for their firms; and (c) the code is integrated into daily activities through ethics code training programs. The effect of market stakeholder pressure is further enhanced when executives also believe that the code will promote a positive external image. Of particular note, we do not find that pressure from non‐market stakeholders (e.g., regulatory agencies, government bodies, court systems) has a unique impact on ethics code use. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   
127.
This paper casts doubt on empirical results based on panel estimations of an “inverted-U” relationship between per capita GDP and pollution. Using a new dataset for OECD countries on carbon dioxide emissions for the period 1960–1997, we find that the crucial assumption of homogeneity across countries is problematic. Decisively rejected are model specifications that feature even weaker homogeneity assumptions than are commonly used. Furthermore, our results challenge the existence of an overall Environmental Kuznets Curve for carbon dioxide emissions.  相似文献   
128.
We examine the relationship between the frequency of stock splits and firms' motives for splitting their stock. Compared to their peers, infrequent splitters show higher post‐split operating performance, but not so for frequent splitters. We find that split ratio and liquidity change explain the stock split announcement effect for the frequent splitters. In contrast, the change in operating performance in the split year explains the announcement effect for the infrequent splitters. Our results suggest that frequent splits are more consistent with the trading range‐improved/liquidity hypothesis and infrequent splits are more consistent with the signaling hypothesis.  相似文献   
129.
This paper examines the risk-adjusted performance of real estate investment trusts (REITs) from 1986 through 1990 in relation to financial and property characteristics of their portfolios. The Sharpe measure of risk-adjusted rate of return was regressed against financial ratios and property investment ratios for a sample of equity and mortgage REITs. The results show that, in general, financial ratios (gross cash flow, leverage, asset size), regional location of properties, and types of real estate investments determine the risk-adjusted performance. More specifically, location of properties in the western United States, ownership of health care properties, and investment in securitized mortgages positively affect the risk-adjusted return. The individual financial variables were not found to be statistically significant in influencing REIT returns.  相似文献   
130.
This paper extends the knowledge‐based view of the firm by using relative measures of two fundamental classifications of knowledge as factors of production. It relates differences in relative quantities of these classifications of knowledge to the probability that a given stage of production is outsourced or de‐integrated. The probability of de‐integration of adjacent stages of production is found to increase on increasing reliance on tacit knowledge and decreasing reliance on encapsulated knowledge. The research was motivated by the belief that the cost and value of knowledge, as a factor of production, influence economic efficiency. Copyright © 2014 John Wiley & Sons, Ltd.  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