全文获取类型
收费全文 | 10859篇 |
免费 | 263篇 |
专业分类
财政金融 | 1906篇 |
工业经济 | 826篇 |
计划管理 | 1856篇 |
经济学 | 2613篇 |
综合类 | 137篇 |
运输经济 | 73篇 |
旅游经济 | 132篇 |
贸易经济 | 1534篇 |
农业经济 | 504篇 |
经济概况 | 1485篇 |
邮电经济 | 56篇 |
出版年
2020年 | 106篇 |
2019年 | 172篇 |
2018年 | 187篇 |
2017年 | 238篇 |
2016年 | 222篇 |
2015年 | 128篇 |
2014年 | 241篇 |
2013年 | 1009篇 |
2012年 | 287篇 |
2011年 | 327篇 |
2010年 | 251篇 |
2009年 | 353篇 |
2008年 | 273篇 |
2007年 | 247篇 |
2006年 | 220篇 |
2005年 | 229篇 |
2004年 | 201篇 |
2003年 | 238篇 |
2002年 | 200篇 |
2001年 | 213篇 |
2000年 | 229篇 |
1999年 | 225篇 |
1998年 | 197篇 |
1997年 | 213篇 |
1996年 | 192篇 |
1995年 | 164篇 |
1994年 | 171篇 |
1993年 | 192篇 |
1992年 | 199篇 |
1991年 | 190篇 |
1990年 | 195篇 |
1989年 | 167篇 |
1988年 | 161篇 |
1987年 | 160篇 |
1986年 | 173篇 |
1985年 | 200篇 |
1984年 | 187篇 |
1983年 | 180篇 |
1982年 | 165篇 |
1981年 | 184篇 |
1980年 | 163篇 |
1979年 | 184篇 |
1978年 | 146篇 |
1977年 | 138篇 |
1976年 | 125篇 |
1975年 | 91篇 |
1974年 | 97篇 |
1973年 | 101篇 |
1972年 | 76篇 |
1971年 | 60篇 |
排序方式: 共有10000条查询结果,搜索用时 281 毫秒
181.
This paper analyses labour force participation and precautionary savings in the presence of risks of being fired or failing to secure a job offer when out of the labour market. We use a finite horizon framework with two employment states and a stage utility function which is CARA in consumption but non-separable in leisure. The results are that there is precautionary labour force participation: employment risk lowers the reservation wage; generally it also reduces consumption. However due to the non-separability assumption, precautionary savings, as usually defined, may not be positive. We characterize the reservation wage and contrast the results with those in which the stage utility is additive in leisure and consumption. We extend the analysis to study the effects of cyclical variation in employment risk, of stochastic future wage rates, and of adding a third employment state of search. 相似文献
182.
P. Mazzoleni 《Decisions in Economics and Finance》1990,13(1-2):59-64
Questo lavoro pone la monotonia generalizzata come un opportuno strumento per uno sviluppo controllato di funzioni scalari e vettoriali. E' cosi possibile caratterizzare la relazione tra su spazi vettoriali.
Summary Some generalized monotonicity properties are analyzed both for scalar and vector functions. In particular the relation between and the class of functions, which are able to preserve it, are studied.相似文献
183.
Conventional wisdom holds that when a firm gets into trouble due to lagging sales and rising costs, cutting the size of the organization to reduce fat and waste is a normal and effective response. In this study, evidence was found to suggest that just the opposite might be true. The financial performance of Fortune 100 companies was tracked over a five-year period—two years prior to the announced layoff, the year of the layoff announcement, and two years following it. Contrary to expectations, the results indicate that financial performance worsened, rather than improved, following announced layoffs. Strategic and human resource implications for the management of corporate downsizing are provided. 相似文献
184.
185.
Most scheduling/lot sizing models for the single-machine problem assume that aggregate demand equals aggregate production; and that backorders are to be avoided. Where working inventories are low, the scheduler may wish to avoid short production runs and willingly incur some backorder penalties so as to increase the length of production runs and reduce setup costs per unit of time. The model proposed here identifies optimal lot sizes with respect to the backorder/setup cost relationships. Use of the model will result in an optimally balanced inventory even when aggregate inventory levels are changing. 相似文献
186.
Simulated annealing: An introduction 总被引:1,自引:0,他引:1
187.
P. B. Beaumont 《Industrial Relations Journal》1991,22(4):300-308
Here the author reviews the stated positions and responses of unions towards employer initiated human resource management developments. The information reviewed is drawn from Canada, Britain and the USA, with some differences being apparent between countries. 相似文献
188.
Gauss M. Cordeiro Denise A. Botter Lúcia P. Barroso Silvia L. P. Ferrari 《Statistica Neerlandica》2003,57(4):391-409
We develop three corrected score tests for generalized linear models with dispersion covariates, thus generalizing the results of Cordeiro , Ferrari and Paula (1993) and Cribari-Neto and Ferrari (1995) . We present, in matrix notation, general formulae for the coefficients which define the corrected statistics. The formulae only require simple operations on matrices and can be used to obtain analytically closed-form corrections for score test statistics in a variety of special generalized linear models with dispersion covariates. They also have advantages for numerical purposes since our formulae are readily computable using a language supporting numerical linear algebra. Two examples, namely, iid sampling without covariates on the mean or dispersion parameter oand one-way classification models, are given. We also present some simulations where the three corrected tests perform better than the usual score test, the likelihood ratio test and its Bartlett corrected version. Finally, we present a numerical example for a data set discussed by Simonoff and Tsai (1994) . 相似文献
189.
Technology-forcing through environmental regulation 总被引:1,自引:0,他引:1
Andries Nentjes Frans P. de Vries Doede Wiersma 《European Journal of Political Economy》2007,23(4):903-916
This paper analyzes the demand characteristics of innovation in pollution abatement and the interaction between a regulator and a polluter under a technology-forcing policy. Important demand-driven determinants of innovation in pollution control are examined, such as uncertainties surrounding unexplored technologies, the length of the compliance period and the maximum abatement costs the regulator is willing to accept. We derive the formal condition that the regulator balances the marginal utility of emissions reduction against the marginal disutilities of a longer compliance time and the increased uncertainty about the feasibility of a more stringent standard. 相似文献
190.