全文获取类型
收费全文 | 24806篇 |
免费 | 686篇 |
国内免费 | 13篇 |
专业分类
财政金融 | 4620篇 |
工业经济 | 2116篇 |
计划管理 | 4131篇 |
经济学 | 5461篇 |
综合类 | 412篇 |
运输经济 | 166篇 |
旅游经济 | 472篇 |
贸易经济 | 4456篇 |
农业经济 | 1286篇 |
经济概况 | 2357篇 |
信息产业经济 | 2篇 |
邮电经济 | 26篇 |
出版年
2023年 | 106篇 |
2021年 | 133篇 |
2020年 | 274篇 |
2019年 | 371篇 |
2018年 | 466篇 |
2017年 | 528篇 |
2016年 | 509篇 |
2015年 | 355篇 |
2014年 | 548篇 |
2013年 | 2954篇 |
2012年 | 652篇 |
2011年 | 802篇 |
2010年 | 654篇 |
2009年 | 745篇 |
2008年 | 777篇 |
2007年 | 756篇 |
2006年 | 677篇 |
2005年 | 645篇 |
2004年 | 579篇 |
2003年 | 614篇 |
2002年 | 587篇 |
2001年 | 535篇 |
2000年 | 500篇 |
1999年 | 487篇 |
1998年 | 489篇 |
1997年 | 496篇 |
1996年 | 475篇 |
1995年 | 414篇 |
1994年 | 385篇 |
1993年 | 440篇 |
1992年 | 406篇 |
1991年 | 390篇 |
1990年 | 347篇 |
1989年 | 310篇 |
1988年 | 270篇 |
1987年 | 289篇 |
1986年 | 302篇 |
1985年 | 448篇 |
1984年 | 476篇 |
1983年 | 421篇 |
1982年 | 404篇 |
1981年 | 388篇 |
1980年 | 360篇 |
1979年 | 366篇 |
1978年 | 263篇 |
1977年 | 268篇 |
1976年 | 233篇 |
1975年 | 187篇 |
1974年 | 198篇 |
1973年 | 147篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
This study endeavors to enhance political marketing literature about the impact of lobbying on firm performance. Our sample is composed of 140 U.S. firms and spans the years 2007–2014 to encompass the 2007–2009 recession and the subsequent recovery period. Our findings indicate that lobbying expenses positively contribute to firm performance. Also, government contracts in both ways, dollar amount and number of government contracts, act as mediators between lobbying expenses and firm performance. In addition, organizational slack moderates the relationship between lobbying expenses and government contracts. The managerial implications suggest that lobbying expenses can be leveraged as a potent tool for firm performance. Firms with larger lobbying efforts acquired both, higher dollar amounts and a greater number of government contracts. 相似文献
13.
László Csató 《Group Decision and Negotiation》2018,27(6):1011-1027
An axiomatic approach is applied to the problem of extracting a ranking of the alternatives from a pairwise comparison ratio matrix. The ordering induced by row geometric mean method is proved to be uniquely determined by three independent axioms, anonymity (independence of the labelling of alternatives), responsiveness (a kind of monotonicity property) and aggregation invariance, which requires the preservation of group consensus, that is, the pairwise ranking between two alternatives should remain unchanged if unanimous individual preferences are combined by geometric mean. 相似文献
14.
探究黑龙江旅游网络关注度时空演变特征对黑龙江旅游业良性发展具有重要意义.利用百度指数获取2011—2018年全国和分地区黑龙江旅游网络关注度逐日搜索指数数据.从时间分布、空间分布、时空集聚3个方面研究其演变特征.研究表明:2011—2018年全国黑龙江旅游网络关注度年际变化总体呈现上升趋势,月际变化呈"W"形;2011—2018年31个省区市黑龙江旅游网络关注度空间差异较大、季节性影响显著;东部地区黑龙江旅游网络关注度偏高,西部地区黑龙江旅游网络关注度的季节差异最明显;东部地区内的黑龙江旅游网络关注度差异性最小,西部地区内差异性最大;黑龙江旅游网络关注度具有正空间自相关,部分东部、中部地区表现为高高集聚,多数西部地区表现为低低集聚. 相似文献
15.
Motor carrier safety is an important concern of shippers, carriers, policy makers, consignees, insurance providers, and the motoring public. One aspect of carrier safety that has garnered substantial attention is whether carriers making greater use of owner–operators are more or less safe vis‐à‐vis carriers making greater use of employee drivers. Currently, conflicting theoretical predictions exist regarding the direction of this relationship. In this article, we offer a reconciliation of the alternative theoretical predictions by developing a coherent theory that merges sociological rational choice theory and theory regarding motor carrier safety. We subject our theory to empirical testing by fitting a series of seemingly unrelated regression models to a vector of safety measures tracked as part of the Federal Motor Carrier Safety Administration's Compliance, Safety, and Accountability program. Our results are consistent with our proposed theory of owner—operator safety and provide meaningful theoretical and managerial implications and directions for future research. 相似文献
16.
This paper uses a reduced‐form approach to derive a closed‐form pricing formula for defaultable bonds. The authors specify the default hazard rate as an affine function of multiple variables which follow the Lévy jump‐diffusion processes. Because such specification allows greater flexibility in the generation of a valid probability of default, their pricing model should be more accurate than the valuation models in traditional studies, which ignore the jump effects. This paper also proposes a new method for estimating the parameters in a Lévy Jump‐diffusion process. The real data from the Taiwanese bond market are used to illustrate how their model can be applied in practical situations. The authors compare the pricing results for the influential variables with no jump effects, with jump magnitudes following the normal distribution, and with jump magnitudes following the gamma distribution. The results reveal that the predictive ability is the best for the model with the jump components. The valuation model shown in this paper should help portfolio managers more accurately price defaultable bonds and more effectively hedge their portfolio holdings. 相似文献
17.
Servitization requires an important strategic shift to drive changes in the operations of manufacturing firms. Using a large-scale survey, the purpose of this paper is (1) to build and validate an operations strategy model of servitization confirming previous case study findings on servitization as a strategic action and (2) to explore the role of sustainability pressures in, and the sustainability performance effects of, pursuing service-based operations strategies. To reach these objectives, a dataset including the responses of 735 manufacturing plants from 21 different countries is analyzed using the PLS-SEM method. The results indicate that the sustainability pressures of stakeholders can push manufacturers to adopt a service-based operations strategy, materializing in the provision of both basic (product-oriented) and advanced (customer-oriented) services (BAS and ADS). Our analysis further indicates that while offering BAS is a precondition for ADS provision, only ADS can offer a competitive edge for manufacturers, both in terms of service and sustainability-related operational performance. 相似文献
18.
This study explores relationships between race, gender, agreeableness, openness to experience, contact, and a measure of attitudes toward diversity—universal‐diverse orientation (UDO). UDO consists of three attitudinal components: realistic appreciation (a cognition), comfort with difference (a feeling), and diversity of contact (a behavior). Results suggest that race, agreeableness, and openness relate to UDO attitudes, primarily due to the relationships of these variables with the behavioral component—diversity of contact. Identifying characteristics of tolerant people (e.g., agreeableness) and training managers in skills related to those characteristics may improve contextual performance and make managers better role models within the organizational context. © 2003 Wiley Periodicals, Inc. 相似文献
19.
John Hibbs 《Economic Affairs》2003,23(4):46-47
Political pressure exists for the bus industry to be brought under local authority control by means of 'Quality Contracts.'These would take away from management the freedom for marketing, and especially for marketing by price, that was returned to them by the 'deregulation' of 1985. The proposed franchises would return the industry to the 'bad old days' and prevent its continued improvement through market forces from taking place. The Department of Transport considered the idea of franchises in 1985, but concluded that it would merely lead to monopoly power. 相似文献
20.
Alexandra L. Minicozzi 《Journal of Applied Econometrics》2003,18(3):291-314
Based on intergenerational data from the Panel Study of Income Dynamics, I provide estimates of income mobility across generations for men. Special attention is paid to issues of censoring caused by a son's unemployment. Employing non‐parametric bounds estimates, I illustrate that previous income mobility estimates rely heavily on (unjustified) assumptions of exogenous selection. Assuming a son's potential income is instead a function of his reason for unemployment and work history, I re‐estimate mobility. Allowing for sampling variability, the range of feasible slopes consistent with these modified bounds restrictions is 0.27 to 0.55. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献