全文获取类型
收费全文 | 4688篇 |
免费 | 147篇 |
专业分类
财政金融 | 887篇 |
工业经济 | 284篇 |
计划管理 | 724篇 |
经济学 | 1012篇 |
综合类 | 59篇 |
运输经济 | 20篇 |
旅游经济 | 41篇 |
贸易经济 | 756篇 |
农业经济 | 219篇 |
经济概况 | 832篇 |
邮电经济 | 1篇 |
出版年
2023年 | 23篇 |
2021年 | 30篇 |
2020年 | 63篇 |
2019年 | 84篇 |
2018年 | 157篇 |
2017年 | 157篇 |
2016年 | 146篇 |
2015年 | 78篇 |
2014年 | 146篇 |
2013年 | 486篇 |
2012年 | 167篇 |
2011年 | 175篇 |
2010年 | 176篇 |
2009年 | 191篇 |
2008年 | 175篇 |
2007年 | 180篇 |
2006年 | 139篇 |
2005年 | 92篇 |
2004年 | 116篇 |
2003年 | 111篇 |
2002年 | 90篇 |
2001年 | 73篇 |
2000年 | 96篇 |
1999年 | 67篇 |
1998年 | 85篇 |
1997年 | 47篇 |
1996年 | 83篇 |
1995年 | 54篇 |
1994年 | 62篇 |
1993年 | 59篇 |
1992年 | 63篇 |
1991年 | 62篇 |
1990年 | 66篇 |
1989年 | 29篇 |
1988年 | 42篇 |
1987年 | 46篇 |
1986年 | 41篇 |
1985年 | 68篇 |
1984年 | 66篇 |
1983年 | 40篇 |
1982年 | 51篇 |
1981年 | 53篇 |
1980年 | 54篇 |
1979年 | 54篇 |
1978年 | 53篇 |
1977年 | 53篇 |
1976年 | 49篇 |
1975年 | 36篇 |
1974年 | 23篇 |
1969年 | 26篇 |
排序方式: 共有4835条查询结果,搜索用时 671 毫秒
51.
Gregory S. Amacher Erkki Koskela Markku Ollikainen 《Bulletin of economic research》2005,57(4):391-405
We use a vertical product differentiation model under partial market coverage to study the social welfare optimum and duopoly equilibrium when convex costs of quality provision are either fixed or variable in terms of production. We show the following new results. First, under fixed costs, the social planner charges a uniform price for the single variant that just covers costs of quality provision. Like the duopoly equilibrium, this socially optimal pricing entails a partially uncovered market, but a smaller share of the market is served compared with the duopoly equilibrium. Second, for the variable cost case, it is socially optimal to provide both high‐ and low‐quality variants, but market shares need not be equal. This differs from the result in fully covered markets. Third, in the duopoly equilibrium, the quality spread is too wide under variable costs relative to the social optimum. Under fixed costs, the duopoly produces two variants, but quality is too low relative to the social optimum, which has only one variant. 相似文献
52.
The different faces of coupon elasticity 总被引:2,自引:0,他引:2
Coupons account for over two-thirds of all consumer promotional efforts initiated by the manufacturers of consumer goods. In this study, the impact of coupons on brand sales is investigated and how that impact decays over the life of the coupon is demonstrated. Specifically, we present an econometric model that can capture coupon effects in terms of equivalent price reduction, account for coupon effects over time, allow inference of coupon effects when retailers decide to double or triple the coupon value, and provide both self-coupon and cross-coupon elasticities at different levels of aggregation. A widely used sales response model is adapted, and an analytical model is proposed to estimate both the self-coupon and cross-coupon (face value) elasticities of sales at the store level. From the store-level elasticity estimates for a given week, the authors analytically derive the coupon elasticities for the chain level by aggregating across stores, and over the life of the coupon by aggregating over time. The proposed sales response model is estimated with the data obtained from three markets for various product categories, and the coupon elasticities are computed. The proposed framework allows one to demonstrate the hypothetical equivalence of a shelf-price reduction for a given coupon face value in each week. Also, the effect of doubling the face value of a coupon results in more than a proportionate increase in elasticity. The authors find that both self and cross-coupon elasticities are much smaller in magnitude than the average self and cross-price elasticity measures reported in the literature. 相似文献
53.
This paper examines the competitive characteristics of U.S. manufacturers in the machine tool (MT) industry. After several decades of decline, this industry has recently shown signs of a modest but sustained recovery. Empirical evidence from a national survey of 104 MT producers suggests that the revival of this sector has been driven by a combination of factors, including renewed export involvement, improved customer support, and better product design. Although most MT companies are small-to-medium-sized enterprises (SMEs), the survey data show that very small SMEs are poorly represented in the recovery thrust of the industry as a whole. Our principal conclusion is that the MT industry has been following an export-led path toward stabilization, but that certain types of small producers are unlikely to thrive for very long. The most serious problems facing small producers include shrinking local markets, import competition, shortages of skilled labor, and cyclical demand. 相似文献
54.
Leo V. Ryan 《Business ethics (Oxford, England)》1995,4(1):36-42
An experienced educationalist comments on the views of top Polish business students on ethics in public life, government and business in modern Poland. The author is Wicklander Professor of Professional Ethics at DePaul University, Chicago, and also served recently as Visiting Fulbright Professor at the Adam Mickiewicz University in Poznan, Poland. He is currently President of the Society of Business Ethics in the USA. 相似文献
55.
Suchismita Mishra Arun J. Prakash Gordon V. Karels Manferd Peterson 《Journal of Economics and Finance》2005,29(1):85-96
The present study empirically examines the contribution of the acquired banks in only the nonconglomerate types of mergers
(i.e., banks with banks), where the bulk of the payment is in the form of equity to the acquiring bank and finds overwhelmingly
statistically significant evidence that nonconglomerate types of mergers definitely reduce the total as well as the unsystematic
risk while having no statistically significant effect on systematic risk. Therefore, it seems that diversification may be
a possible motive for bank mergers. 相似文献
56.
Zusammenfassung Es wird eine optimale Strategie im Sinne des minimalen erwarteten Verlustes für die beiden Entscheidungeny>y
o undyy
o aufgrund der Messungen einer mitY positiv korrelierten, einfacher und/oder billiger zugänglichen ZufallsvariablenX abgeleitet. Dabei wird angenommen, daßX undY nach einer bivariaten Normalverteilung mit bekannten Parametern verteilt sind und die Entscheidungyy
o getroffen wird, wennx größer ist als ein zu bestimmendesx
o, und die Entscheidungy>y
o, wennx gleich oder kleiner als diesesx
o ist. Für die Bestimmung des optimalenx
o werden zunächst die Kosten für die beiden Fehlentscheidungen jeweils als konstant vorausgesetzt, in einem weiteren Ansatz wird jedoch für die Mißklassifikationyy
o eine mity exponentiell wachsende Risikofunktion angenommen. Um die relative Häufigkeit der zu erwartenden Fehlklassifikationen abschätzen zu können, wird schließlich die bedingte WahrscheinlichkeitP(x>x
o,y) errechnet.
Summary An optimal strategy, with minimum expected risk, for the decisionsy>y o oryy o is constructed on the basis of the measurement of a variableX, which is positively correlated withY and can be measured more easily and/or with smaller expense. A bivariate normal distribution with known parameters is assumed forX andY. For the observationsx a limitx o is aimed at, so that the decisionsy>y o oryy o are taken ifx>x orxx o respectively. Optimal values ofx o are first calculated under the assumption of constant losses for the two misclassifications (x>x o ifyy o andxx o ify>y o). In a further approach the loss for a wrong decisionyy o is assumed to increase exponentially withy. Finally the conditional probabilityP (x>x o\y) is calculated to get an assessment of the relative frequencies of wrong decisions to be expected.相似文献
57.
Akhavein Jalal D. Swamy P. A. V. B. Taubman Stephen B. Singamsetti Rao N. 《Journal of Productivity Analysis》1997,8(1):71-93
This article develops a new method of estimating inefficiencies in joint production and shows that unlike the approaches utilized in the previous studies of inefficiency, this method maintains a consistent relationship between the error term of a profit function and the error terms of its price derivatives. A useful by-product of the method is a proof of a Hotelling-like lemma that relates stochastic input demand and output supply functions to stochastic profit functions. While the previous studies fit a single frontier to data on all firms, this paper estimates a frontier unique to every observed firm to allow each one to have a different potential of achieving maximal levels of profit. The new method is applied in the analysis of annual data, 1984–1989, for U.S. commercial banks. Both the analytical and numerical results of the paper show that the residual that the previous studies attribute to inefficiency includes the effects of excluded variables and of inaccuracies in the specified functional forms. Once accurate estimates of these effects are subtracted from the residual, the distortions in the measured inefficiencies should be considerably reduced. Consequently, this article considers how such estimates might be obtained. 相似文献
58.
Halli SS Rao KV 《Journal of Institute of Economic Research. J.S.S. Institute of Economic Research》1987,22(2):1-21
The authors analyze the relationship between labor force participation and fertility in Canada using data from the Public Use Sample Tapes from the 1971 and 1981 censuses. Factors considered include age, religion, educational status, and marital status. The authors conclude that "labour force participation of women seems to have less influence on fertility compared to [the] fertility effect on labour force participation." 相似文献
59.
60.
It is becoming increasingly apparent from the literature that marketers need to consider customer-level information when they
generate a marketing strategy for the firm. In this article, the authors develop a customer-focused framework that uses a
marketing strategy with an overall objective of maximized financial performance. This strategy is driven by seven customer-level
marketing tactics and shows how actual customer data can be used to generate an actionable marketing strategy leading to optimal
levels of profitability, customer equity, and shareholder value. In addition, the authors discuss a successful implementation
of this strategy for several business-to-business and business-to-consumer firms and offer insights as to how to customize
an implementation strategy for any firm, along with presenting potential challenges a firm may encounter during the implementation
process. Several suggestions for future research are offered to explore and harness this newly available evidence.
V. Kumar (VK) (vk@business.uconn.edu) is the ING Chair Professor of Marketing and the executive director of the ING Center for Financial
Services at the University of Connecticut. He spends his time by transferring his knowledge (however little it may be) to
his two daughters about customer lifetime value, diffusion models, forecasting sales and market share, retailing, and marketing
strategy.
J. Andrew Petersen (apetersen@business.uconn.edu) is a doctoral candidate in marketing at the University of Connecticut. His research interests
include customer lifetime value, word-of-mouth effects, and customer-level marketing strategy. His research has been published
inMarketing Research Magazine and theJournal of the Academy of Marketing Science. 相似文献