全文获取类型
收费全文 | 8659篇 |
免费 | 141篇 |
专业分类
财政金融 | 1836篇 |
工业经济 | 636篇 |
计划管理 | 1367篇 |
经济学 | 1829篇 |
综合类 | 113篇 |
运输经济 | 55篇 |
旅游经济 | 164篇 |
贸易经济 | 1338篇 |
农业经济 | 310篇 |
经济概况 | 1146篇 |
邮电经济 | 6篇 |
出版年
2020年 | 79篇 |
2019年 | 121篇 |
2018年 | 148篇 |
2017年 | 160篇 |
2016年 | 146篇 |
2015年 | 105篇 |
2014年 | 149篇 |
2013年 | 968篇 |
2012年 | 223篇 |
2011年 | 253篇 |
2010年 | 218篇 |
2009年 | 236篇 |
2008年 | 224篇 |
2007年 | 173篇 |
2006年 | 191篇 |
2005年 | 165篇 |
2004年 | 171篇 |
2003年 | 165篇 |
2002年 | 175篇 |
2001年 | 162篇 |
2000年 | 161篇 |
1999年 | 153篇 |
1998年 | 166篇 |
1997年 | 160篇 |
1996年 | 148篇 |
1995年 | 120篇 |
1994年 | 124篇 |
1993年 | 139篇 |
1992年 | 157篇 |
1991年 | 159篇 |
1990年 | 113篇 |
1989年 | 114篇 |
1988年 | 96篇 |
1987年 | 112篇 |
1986年 | 120篇 |
1985年 | 158篇 |
1984年 | 134篇 |
1983年 | 163篇 |
1982年 | 135篇 |
1981年 | 123篇 |
1980年 | 140篇 |
1979年 | 125篇 |
1978年 | 94篇 |
1977年 | 108篇 |
1976年 | 101篇 |
1975年 | 100篇 |
1974年 | 91篇 |
1973年 | 73篇 |
1972年 | 63篇 |
1971年 | 61篇 |
排序方式: 共有8800条查询结果,搜索用时 12 毫秒
991.
We examine the relative influence of preferences and technology on producers' ex ante willingness to pay for a reduction in production risk. A risk averse producer pays both an Arrow-Pratt risk premium to stabilize income and a ‘production premium’ to stabilize yield. Using soil-nitrate risks as our motivating example, we demonstrate that the production premium accounts for 40-85% of producers' willingness to pay for risk reduction. These results demonstrate the relative importance of technology over risk preferences when estimating the costs of agricultural production risk. 相似文献
992.
993.
Robert F. Göx 《Review of Accounting Studies》2008,13(4):452-478
I study the economic consequences of tax deductibility limits on salaries for the design of incentive contracts. The analysis is based on an agency model in which the firm’s cash flow is a function of the agent’s effort and an observable random factor beyond the agent’s control. According to my analysis, limiting the tax deductibility of fixed wages has two consequences. The principal rewards the agent on the basis of the observable random factor and adjusts the amount of performance-based pay in the optimal incentive contract. The new contract can have weaker or stronger work incentives than without the tax. The theoretical findings have implications for empirical compensation research. First, the analysis shows that reward for luck can be the optimal response to recent tax law changes, whereas earlier empirical literature has attributed this phenomenon to managerial entrenchment. Second, I demonstrate that a simple regression analysis that fails to control for separable measures of luck is likely to find an increased pay for performance sensitivity as a response to the introduction of tax deductibility limits on salaries even if the pay for performance sensitivity has actually declined. 相似文献
994.
There is a strong need for accurate and spatially referenced information regarding policy making and model linkage. This need has been expressed by land users, and policy and decision makers in order to estimate both spatially and locally the impacts of European policy (like the Common Agricultural Policy) and/or global changes on farm-groups. These entities are defined according to variables such as altitude, economic size and type of farming (referring to land uses). European farm-groups are provided through the Farm Accountancy Data Network (FADN) as statistical information delivered at regional level. The aim of the study is to map locally farm-group probabilities within each region. The mapping of the farm-groups is done in two steps: (1) by mapping locally the co-variables associated to the farm-groups, i.e. altitude and land uses; (2) by using regional FADN data as a priori knowledge for transforming land uses and altitude information into farm-groups location probabilities within each region. The downscaling process focuses on the land use mapping since land use data are originally point information located every 18 km. Interpolation of land use data is done at 100 m by using co-variables like land cover, altitude, climate and soil data which are continuous layers usually provided at fine resolution. Once the farm-groups are mapped, European Policy and global changes scenarios are run through an agro-economic model for assessing environmental impacts locally. 相似文献
995.
Y. P. Adegbola N. R. Ahoyo Adjovi S. A. Adekambi R. Zossou E. S. Sonehekpon F. Assogba Komlan 《国际粮食与农业综合企业市场学杂志》2019,31(1):1-21
Constraints related to the technical and socioeconomic aspects of adopting tomato varieties are well documented. However, preferences relating to the demand for this fruit are rarely studied. In fact, demand for the different varieties of tomatoes might be related to consumers’ preferences for the extrinsic (color, size) and intrinsic (taste, nutritive value, water content) characteristics specific to each variety. It is therefore indispensable to determine the characteristics of tomatoes preferred by consumers. We examine consumers’ preferences for tomato attributes among a sample of 600 consumers in four representative markets in the main cities in southern Benin. The study also identifies potential segments of consumers and the market shares of each profile for each segment. The study identifies four potential tomato market segments, two of which have a strong preference for local tomatoes, namely, those that can be conserved for long periods and those with a firm consistency. 相似文献
996.
Bianca Peters Stephanie F. McWhinnie 《The Australian journal of agricultural and resource economics》2018,62(1):65-82
Reducing dependence on fossil fuels by decreasing energy consumption is a common environmental policy. One mechanism used to achieve this is to encourage increased energy efficiency. However, improving efficiency may have an opposing effect and cause an increase in energy consumption if the intensity of use changes. This phenomenon is known as the rebound effect. We estimate direct rebound effects for energy use in Australia based on both aggregate residential energy use data and on household energy expenditure data. Our approach implements a new methodology developed by Hunt and Ryan (2014, Catching on the rebound: Why price elasticities are generally inappropriate measures of rebound effects. Surrey Energy Economics Discussion Paper Series SEEDS 148; 2015, Energy Economics 50, 273) that explicitly relates energy service use with energy source demand and directly incorporates measures of efficiency changes. The results indicate that the rebound effect is relatively high for energy use by Australian households. Due to the unique nature of our household data set, we can examine the influence of demographic and housing characteristics. We find that low‐income households and households with vulnerable members have the largest rebound effects. The relatively large rebound effects found here suggest that consumers gain from efficiency by improved energy services, and thus, policy targeting energy efficiency is not likely to be successful at reducing energy consumption. 相似文献
997.
Louis J. Lombardi F.S.A. 《North American actuarial journal : NAAJ》2013,17(1):94-106
Abstract The adoption of Statement of Financial Accounting Standards No. 97 (SFAS 97) eliminated the “lock-in” concept introduced in SFAS 60. Since many of the actuarial assumptions used in the calculation of the deferred acquisition cost (DAC) asset are difficult to predict over an extended period of time, “dynamic unlocking” was a sensible solution. Although this “dynamic unlocking” keeps the assumptions in line with recent experience, it comes at a cost—increased volatility of GAAP earnings. Some of the causes of this volatility are warranted since it accentuates the effects on earnings due to certain changes in the underlying experience. Other causes of this volatility may be unwarranted because of a misapplication of the principles underlying SFAS 97 and SFAS 120 or the manner in which changes in experience were reflected. In addition, most analysts expect the amortization of deferred acquisition costs to increase when earnings are better than expected. Conversely, analysts expect the amortization of deferred acquisition costs to decrease when earnings are worse than expected. Often the amortization of deferred acquisition costs behaves in a manner contrary to their expectations. This article analyzes what causes this volatility, explains why the amortization can behave contrary to expectations, and suggests several techniques for minimizing these unwarranted results. 相似文献
998.
Flood risk insurance can be an effective tool in assisting the restoration of damaged property after a flood event and sustaining communities through difficult times. It can also form part of a wider flood risk management strategy. In the light of recent flood events in the UK and in the context of changing property insurance markets, the universal cover previously enjoyed by floodplain residents has been called into question. Conflicting media and industry views leave the floodplain resident and the wider community in confusion. A survey of floodplain residents in England regarding their experience with flooding and flood insurance in England has been undertaken. The results reveal that some floodplain residents do indeed encounter difficulties when seeking insurance for their homes. However, despite the risk‐averse policies of some insurers, availability of insurance is still strong in both at‐risk and previously flooded locations. Success in gaining insurance may lead to complacency among residents who see no advantage in pursuing other, more costly, damage mitigation actions. As a tool in risk management, therefore, the market is prevented from realising its potential by competition, which results in a lack of a consistent approach, rewards homeowners' search strategies and reduces information flow. 相似文献
999.
Lauren A. Cooper Jimmy F. Downes Ramesh P. Rao 《Review of Quantitative Finance and Accounting》2018,50(1):95-128
This study examines whether firms engage in income-decreasing real earnings management before open market stock repurchases to reduce the cost of stock buybacks. In the short run, managers have the ability to underproduce inventory and increase discretionary expenditures, thus decreasing current period earnings. We find that managers engage in both of these activities before repurchasing their firms’ shares, especially the latter. Also, companies increase their discretionary spending before making repurchases to a greater extent following the passage of the Sarbanes–Oxley Act of 2002 as well as when they are financially healthy and have high marginal tax rates. Finally, we document that firms with the most income-decreasing real earnings management experience the largest positive abnormal returns during the subsequent period. Our findings highlight the importance of considering firms’ use of real operating decisions, as opposed to just opportunistic disclosure practices, around significant corporate events, such as the repurchase of their own stock. 相似文献
1000.
The cash-flow valuation method (CFVM) has been developed in Canada for the valuation of insurance company annuity products. Its range of application is expected to be extended shortly to the valuation of most other life insurance company products. The CFVM is based on the use of “best-guess” assumptions, supplemented by specific provisions for adverse deviations. In this paper, special attention is paid to the calculation of the provision for adverse deviations with respect to the interest rate risk. We show that the determination of this provision is the analog for life insurance and annuity policy liabilities of the calculation by banks of Value at Risk (VaR) with respect to portfolios of securities held for trading. 相似文献