全文获取类型
收费全文 | 17676篇 |
免费 | 339篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 3331篇 |
工业经济 | 1311篇 |
计划管理 | 2961篇 |
经济学 | 3662篇 |
综合类 | 164篇 |
运输经济 | 124篇 |
旅游经济 | 244篇 |
贸易经济 | 2824篇 |
农业经济 | 992篇 |
经济概况 | 2359篇 |
信息产业经济 | 1篇 |
邮电经济 | 43篇 |
出版年
2020年 | 177篇 |
2019年 | 260篇 |
2018年 | 365篇 |
2017年 | 332篇 |
2016年 | 354篇 |
2015年 | 219篇 |
2014年 | 363篇 |
2013年 | 1685篇 |
2012年 | 504篇 |
2011年 | 518篇 |
2010年 | 441篇 |
2009年 | 519篇 |
2008年 | 515篇 |
2007年 | 444篇 |
2006年 | 439篇 |
2005年 | 376篇 |
2004年 | 372篇 |
2003年 | 380篇 |
2002年 | 405篇 |
2001年 | 346篇 |
2000年 | 364篇 |
1999年 | 348篇 |
1998年 | 306篇 |
1997年 | 286篇 |
1996年 | 298篇 |
1995年 | 272篇 |
1994年 | 272篇 |
1993年 | 274篇 |
1992年 | 283篇 |
1991年 | 271篇 |
1990年 | 275篇 |
1989年 | 242篇 |
1988年 | 207篇 |
1987年 | 212篇 |
1986年 | 242篇 |
1985年 | 344篇 |
1984年 | 311篇 |
1983年 | 277篇 |
1982年 | 269篇 |
1981年 | 272篇 |
1980年 | 263篇 |
1979年 | 244篇 |
1978年 | 236篇 |
1977年 | 233篇 |
1976年 | 193篇 |
1975年 | 195篇 |
1974年 | 163篇 |
1973年 | 151篇 |
1972年 | 134篇 |
1971年 | 106篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
Lilyan?E.?FulginitiEmail author Richard?K.?Perrin 《Journal of Productivity Analysis》2005,24(2):133-155
Technical change is generally characterized by a rate and biases, both evaluated for given producer prices. This paper examines
the potential discrepancy between this rate and the corresponding rate of consumer welfare change as measured by Allais distributable
surplus. We postulate a general equilibrium context with various market failures (taxes, quotas, imperfect competition, and
“poorly priced” commodities), and use comparative statics to express the rate of welfare change in terms of the rate and biases
of the technical change. An elementary simulation model of a taxed economy suggests that the rate of welfare change may differ
from the rate of technical change by as much as 50% under plausible circumstances. 相似文献
122.
THE INFLUENCE OF ORGANIZATION STRUCTURE ON THE UTILITY OF AN ENTREPRENEURIAL TOP MANAGEMENT STYLE 总被引:11,自引:0,他引:11
This study examined the influence of organization structure on the relationship between top management's entrepreneurial orientation and financial performance. Moderated regression analysis was used to analyse data collected from 80 business organizations. the findings suggest that an entrepreneurial top management style has a positive effect on the performance of organically-structured firms and a negative effect on the performance of mechanistically-structured firms. 相似文献
123.
Summary A procedure is proposed in this paper for testing the shape parameter, of the Weibull distribution. The test statistic which is based on the extremal quotient, possesses a monotone property which makes it possible for rejection earlier than the last planned observation of the null hypothesis,H
0: =0 when the alternative hypothesis isH
a: <0 and early acceptance ofH
0 whenH
a: >0. The test being scale-free, does not require the scale parameter to be known. 相似文献
124.
Prof. Dr. G. Bruckmann 《Metrika》1969,14(1):183-213
Zusammenfassung Nach einer kritischen Analyse der Begriffe „absolute“ und „relative“ Konzentration werden einige Kriterien gegeben, die Ma?zahlen
der absoluten oder der relativen Konzentration zu erfüllen haben. Hierauf wird untersucht, inwieweit die gebr?uchlichsten
Ma?zahlen der Konzentration (Gini, Herfindahl, Münzner) diese Kriterien erfüllen. Dann wird gezeigt, da? sich eine vonAdam angegebene, sehr allgemeine Klasse von Ma?zahlen als Ma?zahlen der absoluten Konzentration qualifizieren; einige wichtige
Spezialf?lle werden genauer untersucht. Im vorletzten Teil der Arbeit werden Ma?zahlen für die Ver?nderung der Konzentration
diskutiert und schlie?lich an einem praktischen Beispiel erprobt.
Summary After analysing the concepts of “absolute concentration” versus “relative concentration”, some criteria for coefficients of concentration are given to qualify them either as measures for absolute or for relative concentration. On the basis of these criteria, some well-known coefficients (Gini, Herfindahl, Münzner) are examined. Furthermore, it is shown that the measures of “predictivity” as given byAdam can be regarded as coefficients of absolute concentration; some important special cases (one of which the Herfindahl index) are investigated. Finally, measures for the change in concentration are developed and applied to a practical example.相似文献
125.
In order to explain coexistence of a deductible for low values of the loss and an upper limit for high values of the loss in insurance contracts, we consider the exchange of risk between two rank dependent expected utility maximizers. It is shown that if the insurer (insured) takes more into account the lowest outcomes – hence maximal losses – than the insured (insurer), then the optimal contract has an upper limit (includes a deductible for high values of the loss). If furthermore, the insured (insurer) neglects the highest outcomes while the insurer (insured) does not, the optimal contract includes a deductible (full insurance) for low values of the loss. 相似文献
126.
127.
This article is a preliminary report on an investigation into the processes of investment decision-making. Three case studies from three firms are presented which show disparities in a number of aspects of process, for example, the length of time taken to arrive at a decision, the number and intensity of disagreements and uncertainties encountered. Data were collected for these cases through semi-structured interviewing from multiple informants in the three organizations, thereby permitting the use of analysis of variance techniques of the different perspectives given by informants. Perceptions of the effectiveness of the decisions were also gathered. One finding from the study is that the decisions with the lowest perceived effectiveness (in firm HE) also lost support from those involved in making the decision during the process, although the decision was eventually implemented. This decision also had the least agreement amongst informants as to the main sources of disagreements. Informants of all three decisions saw effect upon product quality and productivity, fit with business strategy and competitive position of the company as the most important factors to take into account in evaluating the decisions. In firm CG, however, there were disagreements as to how the investment should be evaluated. In the conclusions to the article a disucssion is given as to the nature of evaluation procedures in relation to the developing theory of information systems. 相似文献
128.
Summary The problem of estimating the slope of a linear relationship between two jointly normally distributed random variables is considered when outliers may occur in the explanatory variable. It will be studied as a special case of an errors-in-variables problem where the explanatory variable is measured which a nonnormally distributed error. In this more general model and under certain conditions a consistent estimator can be given with a normal limiting distribution. Applications to cases of outliers in the explanatory variable will be presented. 相似文献
129.
Kenneth K. Boyer G.Keong Leong Peter T. Ward Lee J. Krajewski 《Journal of Operations Management》1997,15(4):331-347
This research examines whether investments in advanced manufacturing technologies (AMTs) such as flexible manufacturing systems (FMS), computer aided design (CAD), computer aided manufacturing (CAM), robotics, etc., are more likely to lead to improved performance if they are supported by improvements in the manufacturing infrastructure of the company. This question is evaluated using data gathered from 202 manufacturing plants chosen from industries generally considered to have relatively high investments in technology.Multiple item scales are developed and adapted from sources in the literature to measure investments in technology, infrastructure, and the performance of the plant. Evidence supporting the reliability and validity of these scales is provided. Hierarchical regression is used to analyze the relationship between technology, infrastructure, and performance. The results suggest that there is an important interaction between the adoption of advanced manufacturing technologies and investments in infrastructure. Firms that invest in both AMTs and infrastructure perform better than firms which only invest in one or the other. Separate analyses on sub-samples of firms with the highest and lowest investments in AMTs show that infrastructural investments have a stronger relationship with performance in the high investment group. Thus, the data indicate that infrastructural investments provide a key to unlocking the potential of advanced manufacturing technologies. 相似文献
130.
Peter Lok Richard Y. Hung Paul Walsh Paul Wang John Crawford 《Journal of Management Studies》2005,42(7):1357-1381
abstract Studies on the three types of process improvement programmes (Continuous Improvement, Reengineering and Benchmarking) have appeared many times in the literature. These studies suggest that certain organizational variables act as enablers and their presence or absence can significantly influence success rates. Such studies have tended to examine companies where a single programme has been implemented. In contrast, this paper examines a sample of companies who have experienced all three programmes. Our aim is to compare and contrast each programme's impact on firm performance and identify which organizational variables are common and which are programme-specific enablers of success. We build and test an integrative framework to support our analysis. Our study found that: (1) Reengineering delivered the greatest impact on performance; (2) executive commitment was needed to make this happen; (3) strategic alignment was the major influence on the success rate of Reengineering and Continuous Improvement programmes; and (4) employee empowerment was necessary for each programme to work effectively. 相似文献