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51.
Lean principles, learning, and knowledge work: Evidence from a software services provider 总被引:1,自引:0,他引:1
Bradley R. Staats David James Brunner David M. Upton 《Journal of Operations Management》2011,29(5):376-390
In this paper, we examine the applicability of lean production to knowledge work by investigating the implementation of a lean production system at an Indian software services firm. We first discuss specific aspects of knowledge work—task uncertainty, process invisibility, and architectural ambiguity—that call into question the relevance of lean production in this setting. Then, combining a detailed case study and empirical analysis, we find that lean software projects perform better than non-lean software projects at the company for most performance outcomes. We document the influence of the lean initiative on internal processes and examine how the techniques affect learning by improving both problem identification and problem resolution. Finally, we extend the lean production framework by highlighting the need to (1) identify problems early in the process and (2) keep problems and solutions together in time, space, and person. 相似文献
52.
We offer new evidence on earnings volatility of men and women in the United States over the past four decades by using matched data from the March Current Population Survey. We construct a measure of total volatility that encompasses both permanent and transitory instability, and that admits employment transitions and losses from self employment. We also present a detailed decomposition of earnings volatility to account for changing shares in employment probabilities, conditional variances of continuous workers, and conditional mean variances from employment entry and exit. Our results show that earnings volatility among men increased by 15% from the early 1970s to mid 1980s, while women's volatility fell, and each stabilized thereafter. However, this pooled series masks important heterogeneity in volatility levels and trends across education groups and marital status. We find that men's earnings volatility is increasingly accounted for by employment transitions, especially exits, while the share of women's volatility accounted for by continuous workers rose, each of which highlights the importance of allowing for periods of non-work in volatility studies. 相似文献
53.
Bradley J. Ruffle 《Journal of public economics》2005,89(8):1519-1542
A basic tenet in microeconomics is tax incidence equivalence, which holds that the burden of a unit tax on buyers and sellers is independent of who actually pays the tax. By contrast, policymakers and the public often mistake statutory incidence for economic incidence. Using competitive laboratory markets, I test both tax incidence equivalence and an analogous theorem for subsidies. For sufficiently large markets, the results show strong support for both theories; there is little to no evidence, even in the short run, of the popular misperception that statutory incidence equals economic incidence. In smaller markets in which competitive forces are weaker and relative bargaining strengths may play a role, the evidence for tax incidence equivalence is weaker as minor price discrepancies may persist between markets. 相似文献
54.
This article seeks to add discussion of the intersection of gender and ethnicity to the debates on individualism and collectivism. In doing so, it challenges the prevailing view, in these debates, of the rise of individualism and the decline in collectivism. Through a study of black and minority ethnic women trade unionists, it shows how a differentiated workforce, rather than leading to individualism at work, may contribute to union renewal and inspire more creative forms of collectivism. 相似文献
55.
This paper examines the effect of attending a Catholic high school on educational outcomes. The statistical analysis is based on data obtained from the US National Educational Longitudinal Study. Using propensity score matching methods to control for selection bias, we find that Catholic schooling improves maths test scores, with stronger effects for males than for females, but appears to have little effect (if any) on reading scores. Catholic schooling also raises high school graduation rates and substantially increases the likelihood of enrolment in a 4‐year college. Use of the difference‐in‐difference method suggests that the effect of Catholic schooling on changes in maths scores is more muted, though still statistically significant. 相似文献
56.
57.
Bradley W. Nelson 《Technological Forecasting and Social Change》1978,12(1):41-60
This paper discusses the results of an experiment to determine if manipulation of statistical feedback of Delphi statements can significantly shift the responses of a fact-probing and/or a value-probing Delphi. This shift is viewed in terms of the degree of success in achieving a desired value. Also examined was whether fact- probing or value-probing Delphis were more susceptible to statistical manipulation. The effects of the statistical manipulation on the convergence and stability of the Delphis were also investigated. 相似文献
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59.
Recent evidence suggests shifts (structural breaks) in the volatility of returns causes non‐normality by significantly increasing kurtosis. In this paper, we endogenously detect significant shifts in the volatility of oil prices and incorporate this information to estimate Value‐at‐Risk (VaR) to accurately forecast large declines in oil prices. Our out‐of‐sample performance results indicate that the model, which incorporates both time varying volatility (without making any distributional assumptions) and shifts in volatility, produces more accurate VaR forecasts than several benchmark methods. We make a timely contribution as the recent more frequent occurrences of unexpected large oil price declines has gained significant attention because of its substantial impact on the financial markets and the global economy. 相似文献
60.
Bradley R. Weinberg 《劳资关系》2021,60(1):119-144
Using a series of labor law reforms in the Canadian province of Ontario between 1991 and1998, this article seeks to (re)assess and compare the effectiveness of two forms of first contract arbitration (FCA) in satisfying the primary policy goals of aiding in the achievement of a first contract and in establishing lasting bargaining relationships. In contrast to previous research findings using this setting, the analysis fails to identify any statistically significant difference in the achievement of first contracts across the automatic and no‐fault forms of FCA. Further, estimates do not appear to identify a statistically significant difference in the establishment of lasting bargaining relationships, defined as the settlement of three of more collective agreements, across the two forms of FCA. These findings indicate that differences observed during this period in the first contract success rate and the establishment of bargaining relationships may be confounded with other factors than the changes to first contract arbitration. 相似文献