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G. Geoffrey Booth John L. Glascock Salil K. Sarkar 《The Journal of Real Estate Finance and Economics》1996,12(2):195-202
This article reexamines the now generally accepted notion that sell-offs of real estate assets provide positive returns for sellers but not for buyers. Following previous research, we use event study methods, but we modify the conventional market model to permit its residuals (unexpected returns) to be described by a time-varying conditional variance. We also differ from previous work in that our sample contains only sell-offs that can be precisely dated. Although we find substantial evidence of time-varying volatility in the unexpected return series, our economic results confirm the conventional viewpoint. 相似文献
84.
Deb Ghosh Sumit Sarkar Paul Dardeau 《International Journal of Intelligent Systems in Accounting, Finance & Management》1997,6(2):163-176
This research focuses on knowledge-based simulation modeling for process redesign. Though the proposed technique can be utilized for ‘starting with a clean slate’, it is particularly well suited for situations where an existing process is already documented, and an attempt is being made to improve or redesign this process. We present a methodology that utilizes the basic process structure (represented in a matrix form), and using a rule-based knowledge acquisition system, interacts with the analyst to construct the process knowledge base. Once all the knowledge has been acquired, the system automatically generates an executable simulation model. Major benefits of this algorithmic approach include (1) reduced model building time, (2) increased analyst productivity, and (3) the assurance that basic process characteristics are not accidentally omitted in the simulation model. To test the validity and applicability of the proposed technique a prototype system has been developed that generates simulation programs in SLAM.© 1997 John Wiley & Sons, Ltd. 相似文献
85.
Nor Aida Mahiddin Nurul I. Sarkar Brian Cusack 《The Review of Socionetwork Strategies》2017,11(1):47-64
After natural and man-made disasters, the telecommunication infrastructure is usually severely damaged, thus hampering communication and rescue services. It is impossible for disaster victims to make use of communication devices such as cellular phones, iPads, or their laptops to make a connection with the outside world (Internet). With infrastructure less and decentralized features, the mobile ad hoc network (MANET) can play an important role in improving communication in post-disaster affected areas. Therefore, the important functionalities of a MANET that allow users to create dynamically configurable wireless networks without fixed infrastructure using common devices such as mobile phones is necessary. This paper reports on the development of new techniques for routing selection and gateway load balancing in MANETs. Network fairness, throughput, and packet delays are measured empirically. The proposed mechanisms can reduce network congestion and consequently improve communication in affected areas. 相似文献
86.
This paper provides a theoretical derivation of commodity beta (stock price sensitivity to commodity price) using a contingent-claim model. The model incorporates operating leverage, financial leverage, costly financial distress, and mean reverting commodity prices; and highlights the important role played by the speed of reversion of the commodity price. It is used to identify theoretically the main determinants of commodity beta. Commodity beta is predicted to be an increasing function of the operating and financial leverage of the firm, and a decreasing function of the company’s tax rate and the level, volatility and speed of reversion of the commodity price. Empirical tests with a sample of gold mining firms provide support for these predictions, particularly the new implications of the model (the effect of the commodity price’s speed of reversion and the company’s tax rate). 相似文献
87.
Sudipto Sarkar 《European Journal of Finance》2013,19(4):308-327
This paper theoretically compares yields and optimal default policies for callable and non-callable corporate debt. It shows that, contrary to the conventional wisdom, it is possible for the yield spread (callable minus non-callable) to be negative. It also identifies the key determinants of the yield spread. Next, it shows that the optimal default trigger for non-callable debt is higher than the trigger for callable debt, resulting in additional default-related costs. Thus, the use of non-callable debt gives rise to an indirect agency cost of early default, which is the difference in total firm value with callable and non-callable debt. This agency cost provides a rationale for the existence of callable debt. By examining the determinants of the magnitude of this agency cost, the conditions that make callable debt more attractive (to the issuing firm) relative to non-callable debt are identified. This allows certain predictions to be made regarding the likelihood of a call feature in a corporate bond. The model's implications are supported by existing empirical studies. 相似文献
88.
Knowledge,firm boundaries,and innovation: Mitigating the incumbent's curse during radical technological change 下载免费PDF全文
We explore the relationship between a firm's organization and its ability to face a radical technological change. We suggest that, during such a change, the presence of both in‐house upstream knowledge and downstream market linkages, within a firm's boundary, has its advantages. We test our predictions in the context of the robotics industry where manufacturers of mechanically controlled “brawny” robots, which were valued mainly for their payload capacity, faced the advent of electrically controlled “brainy” robots that emphasized accuracy and repeatability. We find that “preadapted” firms—the ones with prior relevant technological knowledge and with access to internal users of “brainy” robots—were the innovation leaders in the emerging new technology but were laggards in the old technology. Copyright © 2014 John Wiley & Sons, Ltd. 相似文献
89.
Sudipto Sarkar 《Review of Quantitative Finance and Accounting》2014,43(4):803-828
Tax loss carryforwards (TLC) are a valuable asset because they can potentially reduce a company’s future tax payments. However, there is often a great deal of uncertainty regarding the probability and timing of these tax savings. We propose a contingent-claim model to value this asset. The value is determined primarily by the size of accumulated carryforwards relative to earnings. We show that, for poorly performing firms with large TLC, (1) the realizable (or fair) value of the tax losses can be significantly smaller than the book value, and (2) the tax losses can account for a significant fraction of the company’s equity value. The model is illustrated by calibrating it to a couple of companies with large carryforwards. Finally, we show how the model can be used to compute the marginal tax rate of a company with carryforwards. 相似文献
90.
We examine the voluntary provision of a public project via binary contributions when contributions may be made over multiple periods. In many situations, early contributors are likely to pay a higher cost than those who wait. We show that in such circumstances the provision of the project always involves delay. Because this game involves coordination on complex, dynamic strategies in the face of asymmetries in payoffs, we examine behavior in the laboratory. 相似文献