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61.
62.
Michael Bruno 《Journal of development economics》1979,6(1):3-10
A simple graphical analysis is presented, for dissection of the growth and distributional responses of a one-sector neoclassical model. How the one-sector model fits in with the somewhat more elaborate models discussed in the subsequent symposium is also pointed out, to shed light on their properties. 相似文献
63.
A better way to innovate 总被引:2,自引:0,他引:2
Chesbrough HW 《Harvard business review》2003,81(7):12-3, 115
Harvard professor Henry Chesbrough takes a look at leading-edge companies' latest moves to harvest ideas from outside and to benefit from sharing their own R&D with others--even with competitors. 相似文献
64.
Managers are told: Be global and be local. Collaborate and compete. Change, perpetually, and maintain order. Make the numbers while nurturing your people. To be effective, managers need to consider the juxtapositions in order to arrive at a deep integration of these seemingly contradictory concerns. That means they must focus not only on what they have to accomplish but also on how they have to think. When the authors, respectively the director of the Centre for Leadership Studies at the University of Exeter in the U.K. and the Cleghorn Professor of Management Studies at McGill University in Montreal, set out to develop a masters program for practicing managers, they saw that they could not rely on the usual MBA educational structure, which divides the management world into discrete business functions such as marketing and accounting. They needed an educational structure that would encourage synthesis rather than separation. Managing, they determined, involves five tasks, each with its own mind-set: managing the self (the reflective mind-set); managing organizations (the analytic mind-set); managing context (the worldly mind-set); managing relationships (the collaborative mind-set); and managing change (the action mind-set). The program is built on the exploration and integration of those five aspects of the managerial mind. The authors say it has proved powerful in the classroom and insightful in practice. Imagine the mind-sets as threads and the manager as weaver. Effective performance means weaving each mind-set over and under the others to create a fine, sturdy cloth. 相似文献
65.
This article addresses the impact of productivity, corruption, and trade openness on the stock returns of 265 industrial companies listed in eight Eastern European fast-emerging markets, over the 2004-2013 period. Through a three-factor model that includes both measures at firm level and macro-level control variables, our findings suggest that country corruption index is negatively correlated with the total annual return of the stocks of the listed industrial companies of our sample. Moreover, the most productive firms are featured by higher stock returns, while leverage seems not to be a key predictor of stock returns. In addition, the article uncovers innovative evidence about trade openness that is negatively correlated with stock returns due to its connection with the recent financial crisis. That is, firms operating in markets that are more open to trade show a higher degree of interconnection with other economies and are more likely to undergo the effects of negative fluctuations from foreign markets during the economic crisis. © 2015 Wiley Periodicals, Inc. 相似文献
66.
We propose dynamic programming coupled with finite elements for valuing American-style options under Gaussian and double exponential jumps à la Merton [J. Financ. Econ., 1976, 3, 125–144] and Kou [Manage. Sci., 2002, 48, 1086–1101], and we provide a proof of uniform convergence. Our numerical experiments confirm this convergence result and show the efficiency of the proposed methodology. We also address the estimation problem and report an empirical investigation based on Home Depot. Jump-diffusion models outperform their pure-diffusion counterparts. 相似文献
67.
Stephen Hall Brian Henry Judith Payne Simon Wren-Lewis 《International Journal of Forecasting》1986,2(4)
Manufacturing output per head rose at an unprecedented rate in the UK in 1981/2, and conventional econometric relationships failed to forecast the associated falls in employment. In this paper we estimate manufacturing employment equations in which output expectations play a central role. These compare fabourably with alternative models, and are able to predict most of the large falls in employment over this period. 相似文献
68.
On the faustmann solution to the forest management problem 总被引:1,自引:0,他引:1
This paper is concerned with optimal solutions to the forest management problem when future utilities are undiscounted. By examining asymptotic properties of such solutions, we find that (i) if the utility function is linear, then the Faustmann periodic solution is optimal; (ii) if the utility function is increasing and strictly concave, an optimal solution converges to the maximum sustained yield solution, which we characterize as a golden rule. These results may be viewed as a possible resolution to the debate in forestry economics about what constitutes an optimal policy in forest management. 相似文献
69.
Researchers and brand managers have limited understanding of the effects social media communication has on how consumers perceive brands. We investigated 504 Facebook users in order to observe the impact of firm-created and user-generated (UG) social media communication on brand equity (BE), brand attitude (BA) and purchase intention (PI) by using a standardized online survey throughout Poland. To test the conceptual model, we analyzed 60 brands across three different industries: non-alcoholic beverages, clothing and mobile network operators. When analyzing the data, we applied the structural equation modeling technique to both investigate the interplay of firm-created and user-generated social media communication and examine industry-specific differences. The results of the empirical studies showed that user-generated social media communication had a positive influence on both brand equity and brand attitude, whereas firm-created social media communication affected only brand attitude. Both brand equity and brand attitude were shown to have a positive influence on purchase intention. In addition, we assessed measurement invariance using a multi-group structural modeling equation. The findings revealed that the proposed measurement model was invariant across the researched industries. However, structural path differences were detected across the models. 相似文献
70.
We consider a discrete‐time financial market with proportional transaction cost under model uncertainty, and study a superreplication problem. We recover the duality results that are well known in the classical dominated context. Our key argument consists in using a randomization technique together with the minimax theorem to convert the initial problem to a frictionless problem on an enlarged space. This allows us to appeal to the techniques and results of Bouchard and Nutz to obtain the duality result. 相似文献