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61.
This paper argues that transportation planning methodologies must be built on the central thesis of the activity-based approach to travel demand modeling, namely, that travel is a derived demand that reflects people's desire and need to participate in activities. The paper discusses why this foundation for transportation planning methodologies is necessary to address contemporary planning and policy analysis issues. The paper also argues that the introduction of time-use data, analysis and modeling is a key element in the development of the next generation of transportation planning methodologies. Following a brief review of time-use studies, the paper discusses a number of planning and policy analysis areas in which time-use data will be of particular value, including the evaluation of induced or suppressed travel demand. The concepts advanced in the paper are illustrated with two brief numerical examples. These examples show how model systems based on time-use data can be used to (i) estimate the number of induced trips that would result from a reduction in commute travel time, and (ii) evaluate the impacts of alternative transportation improvement projects. 相似文献
62.
Yoichi Tsuchiya Satoshi Suehara 《Journal of Chinese Economic and Business Studies》2013,11(4):397-406
This study investigates the directional accuracy of Chinese renminbi exchange rate forecasts by professional forecasters. The forecast with a horizon of one year is useful, whereas the forecasts with forecast horizons of one and three months are not useful in predicting the direction of the exchange rate change. The results for the long-term forecasts suggest that forecasters believe that the government maintains its foreign exchange rate policy of renminbi appreciation. In contrast, short-term forecasts show consistent evidence of exchange rate unpredictability. 相似文献
63.
Satoshi Kanazawa 《Managerial and Decision Economics》2004,25(1):41-54
Why do microeconomic theories (such as decision theory and game theory) often fail to predict human behavior despite their mathematical elegance and deductive rigor? I suggest that such empirical failures stem from the theory's misconception of how the human brain functions. Drawing on evolutionary psychology, I propose the Savanna Principle, which posits that a hypothesis about human behavior fails to the extent that its scope conditions and assumptions are inconsistent with the ancestral environment, and its experimental corollary, that the Savanna Principle holds (and the hypothesis fails) to the extent that the conditions of the experiment resemble the ancestral environment. I suggest that the Savanna Principle and its corollary might together explain the relative empirical failure of noncooperative game theory and public choice theory, and the relative success of network exchange theory and competitive price theory tested in double auction markets in experimental economics. Copyright © 2003 John Wiley & Sons, Ltd. 相似文献
64.
Satoshi Nagano 《Journal of Financial Services Marketing》2006,11(2):180-189
When the property bubble burst in the 1990s, the corporate and banking sectors in Japan suffered from historically huge losses that resulted in a sluggish economy that lasted nearly 15 years. In 2002, the economy finally bottomed out. By going through this process, Japan learnt many lessons in the fields of economics, sociology, and politics. Two critical lessons that the financial authorities gleaned from this experience are: (1) Disclosure of the current conditions of financial institutions in the early stages is of the utmost importance. Once losses start to mount, disclosure and one-time compensation should trigger a systemic risk. (2) At times when a country is going through a strong economic period, it is important to make preparations for economic stagnation. To ensure that this is successful, the first step is for the public sector to share the understanding of the current economic conditions and the forecasts for its seeable future. It is also important that they disclose this knowledge to other authorities and people to ensure transparency. Those lessons are not so special, rather ordinary. But it is difficult to practice them. The mechanism of the bubble economy and how it burst is not clear yet in economics. But history shows such situations repeat themselves in different ways. In the process of globalisation, excess liquidity in the financial market is invested into too illiquid assets all over the world, especially in the emerging countries and real property market. To know what is happening is critical. But the domestic authorities who supervise financial institutions in the mother market face two difficulties to do it. Owing to the development of IT, the boundary between financial institutions and funds becomes vague and investment money will go freely over cross-border. 相似文献
65.
Masahiro Hori Satoshi Shimizutani 《Journal of the Japanese and International Economies》2012,26(3):405-433
This paper provides new evidence of consumers’ reaction to an anticipated sizable change in income. Until FY2002, Japanese public employees received predictable large bonus payments three times a fiscal year (in June, December, and March), but the March bonus was abolished in FY2003. We compare the seasonal patterns of public employees’ expenditure before and after the reform of the bonus payment schedule. Contrary to the prediction of the life cycle/permanent income hypothesis (LC/PIH), we find evidence that monthly patterns of household expenditure were significantly affected by the anticipated large change in income pattern. However, at closer inspection, this excess sensitivity of expenditure is observed only for expenditure subcategories of some durability, i.e., durables and semi-durables. Thus, while the LC/PIH does not appear to hold for expenditure (which we observe here), it may still hold for consumption. 相似文献
66.
Satoshi Shimizutani 《Japan and the World Economy》2011,23(3):141-152
In Japan, retirement is a gradual process that transpires over a particularly long period of time. Using large scale micro-level datasets from the Survey of Employment of the Elderly compiled by the Japanese government, we provide some stylized facts on the development of retirement behavior since the 1980s and explore factors affecting the individual retirement decision. First, we observed a general declining trend in the proportion of retired individuals aged 55–59 (especially females) while the proportion of retired individuals aged 65–69 (especially males) increased. Second, the survival analysis on actual retirement age shows that those who are more educated are more likely to retire earlier and those who experienced mandatory retirement are less likely. Third, the survival analysis on the expected retirement age shows that individuals who are satisfied with their job in terms of nonmonetary rewards are less likely to retire earlier. 相似文献
67.
This study proposes a new scheme for the static replication of European options and their portfolios. First, a general approximation formula for efficient static replication as an extension of Carr P. and Chou A. (1997, 2002) and Carr P. and Wu L. (2002) is derived. Second, a concrete procedure for implementing the scheme by applying it to plain vanilla options under exponential Lévy models is presented. Finally, numerical examples in a model developed by Carr, P., Geman, H., Madan, D., and Yor M. (2002) are used to demonstrate that the replication scheme is more efficient and more effective in practice than a standard static replication method. © 2008 Wiley Periodicals, Inc. Jrl Fut Mark 29:1–15, 2009 相似文献
68.
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70.
Akira Yamazaki 《Review of Derivatives Research》2014,17(1):79-111
This paper presents an approximate formula for pricing average options when the underlying asset price is driven by time-changed Lévy processes. Time-changed Lévy processes are attractive to use for a driving factor of underlying prices because the processes provide a flexible framework for generating jumps, capturing stochastic volatility as the random time change, and introducing the leverage effect. There have been very few studies dealing with pricing problems of exotic derivatives on time-changed Lévy processes in contrast to standard European derivatives. Our pricing formula is based on the Gram–Charlier expansion and the key of the formula is to find analytic treatments for computing the moments of the normalized average asset price. In numerical examples, we demonstrate that our formula give accurate values of average call options when adopting Heston’s stochastic volatility model, VG-CIR, and NIG-CIR models. 相似文献