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91.
Further Evidence on the Labor Market Effects of Addiction: Chronic Drug Use and Employment in Metropolitan Miami 总被引:1,自引:0,他引:1
This study used data collected from 1996 to 1997 in low-income and high-crime neighborhoods in Miami, Florida, to analyze the effects of chronic drug use on employment. Given the significant gender differences in substance use patterns and labor market behavior, separate models were estimated for males and females. The analysis estimated univariate probit models of employment and bivariate probit models that allow for possible correlation among missing or unobserved determinants of drug use and employment. The key finding was that regardless of gender and specification, chronic drug use significantly reduced the probability of being employed. (JEL I12 , J22 , J24 ) 相似文献
92.
Alexandre Ernesto da Costa Antnio Antonio Rodriguez‐Gil 《Review of Development Economics》2020,24(1):209-237
The aim of this article is to examine procyclicality in Angola, assess whether it behaves asymmetrically over the oil cycle, and test the hypothesis that institutions and fiscal rules can moderate procyclicality. Received wisdom suggests that in resource‐rich economies, fiscal policy tends to be procyclical albeit improvements in the past decades due to institutional reforms. Similar evidence is available for oil‐rich economies; however, we know little about how procyclicality behaves over the oil cycle; that is, whether spending (and revenue) grows faster during oil‐market booms, than during downturns. Further, evidence on institutions and fiscal rules in oil‐exporting economies is still ambiguous. We bridge both gaps by examining fiscal policy procyclicality in Angola, one of the largest oil‐producers in Africa, and a country that has experienced an intense process of institutional reforms since 2002. Therefore, it is an ideal candidate for our study. We use data for the 2004–2014 period to estimate a threshold vector error correction model that extends vector autoregressive and vector correction methods used up to date. Our results indicate that revenue and spending are generally procyclical to oil shocks, that revenue is more procyclical during booms, and that institutional quality, net inflows, financial openness, and fiscal rules affect procyclicality. 相似文献
93.
Mário Alexandre Patrício Martins da Silva 《Economics of Innovation and New Technology》2013,22(2):139-160
We present a unified graphical framework accounting for the nature and impact of spillover effects. The dynamics of the learning process with a specific spillover transfer mechanism can be illustrated by referring to this four-quadrant picture. In particular, a whole cycle of technological learning is explained with the help of such a graphical representation of the basic learning process in the presence of knowledge spillovers. We hypothesize two different functional specifications of spillover exchanges among firms within a local innovation system. Each conceivable shape for the knowledge transfer relationship among firms expresses a possible mode and intensity of information processing arising from technology spillovers. A general proposition regarding the relative efficiency of the two alternative formal models with spillover effects is derived. The basic models with spillover effects are then extended in several relevant directions. 相似文献
94.
Sergio Belda‐Miquel Jordi Peris Blanes Alexandre Frediani 《International journal of urban and regional research》2016,40(2):321-339
The right to the city, a concept previously associated with radical social movements, has been accepted by several governments and has inspired new public policies. However, some authors see this process of institutionalization as involving a loss of a significant part of the radical origins of the concept. This article approaches this process and the new opportunities and limitations it may entail for social movement organizations with a more radical perspective on the right to the city. We explore the paradigmatic case of Brazil and the action of a particular organization, the Movimento dos Sem Teto da Bahia (MSTB, or Homeless Movement of Bahia) in the city of Salvador. We draw on the discussion of the politics of the right to the city and on an original combination of social movement theories and critical discourse analysis in order to analyse political‐institutional and discursive changes in urban reform in Brazil and Salvador. We then analyse how the MSTB moves within this new context, navigating its tensions and contradictions while advancing a radical project of transformation of urban reality within a reformist context. We also reflect on the relevance of Lefebvrian ideas for understanding and inspiring contemporary struggles for the right to the city. 相似文献
95.
When people immigrate to the United States from countries with less economic freedom, they do not dampen economic freedom in their destination states. We use the Economic Freedom of North America report to rate the economic freedom of US states, and we group immigrants by how far below the United States their origin countries score in the Economic Freedom of the World report. Our major findings hold true even when states receive immigrants from countries with far less economic freedom. Most relationships between immigration and the US states' economic freedom scores are neither statistically nor economically significant. 相似文献
96.
Active portfolio management often involves the objective of selecting a portfolio with minimum tracking error variance (TEV) for some expected gain in return over a benchmark. However, Roll (1992) shows that such portfolios are generally suboptimal because they do not belong to the mean-variance frontier and are thus overly risky. Our paper proposes an appealing method to lessen this suboptimality that involves the objective of selecting a portfolio from the set of portfolios that have minimum TEV for various levels of ex-ante alpha, which we refer to as the alpha-TEV frontier. Since practitioners commonly use ex-post alpha to assess the performance of managers, the use of this frontier aligns the objectives of managers with how their performance is evaluated. Furthermore, sensible choices of ex-ante alpha lead to the selection of portfolios that are less risky (in variance terms) than the portfolios that active managers would otherwise select. 相似文献
97.
Alexandre M. Rodrigues Theodore P. Stank Daniel F. Lynch 《Journal of Business Logistics》2004,25(2):65-94
The current research was undertaken to present and test a framework of supply chain logistics integration that synthesizes current logistics thought with an established theory of organizational design. The framework portrays performance as an outcome of appropriate alignment between strategy, structure, and processes. The results support the contention that a firm that pursues a relational strategy, develops information and measurement structures to support relational processes, and then uses these tools to implement and execute integrated operations will experience high levels of logistical performance. In addition, the results indicate that superior logistics performance is related to simultaneous integration of internal and external operational processes. 相似文献
98.
In this paper, a model of labor contracting with asymmetric information is developed in order to explain the existence of inefficient long working hours. Since firms cannot observe workers' true productivity, they use long working hours as a mechanism to sort productive workers. The model therefore predicts that workers with a high productivity will tend to work inefficient long hours. An empirical analysis confirms this prediction: high-productivity workers are more likely to experience hours constraints in the form of overemployment than low-productivity workers. Moreover, the extent of overemployment is positively related to productivity. 相似文献
99.
Introduction to design and analysis of production systems 总被引:1,自引:0,他引:1
Ronald G. Askin Alexandre Dolgui Jean-Marie Proth 《International Journal of Production Economics》2009,120(2):271-285
In a two-party VMI channel, the vendor operates the basic stocking and delivery functions and makes inventory replenishment decisions while the retailer is responsible for customer acquisition and in-store services. This paper focuses on such retail channel and proposes an analytical model for the partners in supply channel to determine the inventory policy with the objective of optimizing system net profit. The model explicitly incorporates issues from both the vendor and the retailer in order to derive a policy for mutual benefits. To illustrate and obtain insights from the proposed solution procedure, we devise a set of numerical analyses based on various scenarios. Factors such as shelf-space-dependent demand, shelf-space capacity, demand pattern, logistics characteristics, and disparity between holding costs of the warehouse and the retail store are also investigated. 相似文献
100.
Gabriela Pasinato Alves Leal Luis Fernando Hor-Meyll Luís Alexandre Grubits de Paula Pessôa 《Journal of Business Research》2014
This study intended to fill some gaps in knowledge about virtual communities and their influence on consumers' purchasing decisions. A Brazilian Orkut community, whose central theme is preparing for wedding ceremonies, was investigated to reveal relationships among members and group influences on purchasing decisions. Twenty-one interviews were conducted by telephone. Results unveil a basic code of conduct, suggesting that the community can also act as a normative reference group, with strong identification among participants. Although the central interest – the wedding ceremony and party – could be considered as episodic, many members actively stay in the community after being married, just to help others. Group leaders seemed to be active participants, those with more experience with products related to the group's interests, or those perceived as having refined tastes. There was evidence that purchasing intentions and behavior can be altered as a result of interactions among members. 相似文献