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Despite the rapid growth of air freight shipments, much of the existing literature on the geography of air transportation has paid more attention to passenger travel than air freight. The purpose of this paper is to elevate our understanding of air freight by determining which specific variables most influence and shape the geographic distribution of air freight by metropolitan area using stepwise regression analysis. The empirical results suggest a regression model of five independent variables was the most parsimonious solution where the final model accounted for 71.1% of the variation in air freight shipments by metropolitan area (MA). The most important predictor was the traffic shadow effect, where less populated MAs under the traffic shadow of larger MAs tended to generate lower levels of freight. The model also suggested that other key predictors included the employment market share in transportation-shipping-logistics industries, per capita personal income, the number of medical diagnostic and supplier establishments, and above average wages in high technology. Overall, metropolitan markets with diverse and efficient ground support systems, freight forwarders and other transportation services, a more affluent population, an intense agglomeration of medical laboratories and related suppliers, and a well paid skilled workforce engaged in computer systems design and electronic product manufacturing are more likely to ship freight by air. 相似文献
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In this article, we advocate more extensive use of the benefit function in specifying price-dependent or inverse demand models. We demonstrate how duality theory may be used to establish the interrelationships between the Marshallian (or Hicksian) inverse demands and Luenberger's adjusted price functions, allowing estimable inverse demands to be derived directly from a benefit function. We estimate two systems of inverse demands for Japanese quarterly fish consumption. Results indicate that the procedures and methods employed here appear promising, and may prove beneficial for quantity and welfare analysis when modeling systems of inverse demand functions. 相似文献
35.
Jack Meyer James W. Richardson Keith D. Schumann 《The Australian journal of agricultural and resource economics》2009,53(4):521-525
A recent paper by Hardaker et al. (The Australian Journal of Agricultural and Resource Economics, 48, 2004a, 253) and book by Hardaker et al. (Coping with Risk in Agriculture, 2004b) describe a procedure for determining an efficient set from among a set of random alternatives. This procedure, called stochastic efficiency with respect to a function (SERF), is claimed to make the same assumption concerning the risk aversion measures as does stochastic dominance with respect to a function (SDRF). This is claim is incorrect. SERF imposes an additional requirement on the risk aversion measures of the decision makers. Both procedures assume a lower and an upper bound on risk aversion, but SERF also assumes that all risk aversion measures are of the same functional form as these lower and upper bound functions. This additional strong requirement on risk preferences implies that the efficient set identified under SERF is usually smaller than that identified using SDRF. 相似文献
36.
Land Tenure and the Adoption of Conservation Practices 总被引:7,自引:0,他引:7
Meredith J. Soule Abebayehu Tegene & Keith D. Wiebe 《American journal of agricultural economics》2000,82(4):993-1005
We use a logit adoption model with data on 941 U.S. corn producers from the 1996 Agricultural Resource Management Study to analyze the influence of land tenure on the adoption of conservation practices. We extend previous analyses by distinguishing renters according to lease type and by distinguishing practices according to the timing of costs and returns. We find that cash-renters are less likely than owner-operators to use conservation tillage, but share-renters are not. Both cash-renters and share-renters are less likely than owner-operators to adopt practices that provide benefits only over the longer term (grassed waterways, stripcropping, and contour farming). 相似文献
37.
Keith Cochrane Shoshanna Saxe Amer Shalaby 《International Journal of Sustainable Transportation》2017,11(2):120-132
Freight on Transit (FOT) refers to an operational strategy where public transit vehicles and/or infrastructure are used to move freight. Examples include moving goods alongside passengers on buses, attaching cargo trailers to transit vehicles, and operating freight vehicles between trains on subway lines. This paper describes the methods and results of a three-round Delphi study engaging 34 transportation experts to explore challenges and opportunities of FOT and to conceptualize and evaluate potential FOT operations in Toronto. Traditional Delphi methods were used for the exploration of FOT challenges and opportunities, and a modified approach was formulated to integrate experts' opinions and develop new FOT concepts for Toronto. The results support previous claims that technical challenges of FOT may be easier to overcome than institutional barriers. Evaluation of potential FOT operating strategies in Toronto suggests that while the current public transit network does not have capacity to support additional movements, there may be realistic opportunities to include freight service in future projects as a means of offsetting operating costs and reducing the impacts of goods movements. 相似文献
38.
Elaine M. Doyle Jane Frecknall Hughes Keith W. Glaister 《Journal of Business Ethics》2009,86(2):177-198
Ethical dilemmas involving tax issues were identified by members of the American Institute of Certified Public Accountants
as posing the most difficult ethical problem for them (Finn et al., Journal of Business Ethics
7(8), pp. 607–609, 1988). The KPMG tax shelter fraud case proves that the tax profession has not gone untainted in the age
of numerous accounting and corporate scandals, such as the Enron débacle (Sikka and Hampton, Accounting Forum
29(3), 325–343, 2005). High-profile scandals serve to highlight the problems caused by differences in ethical judgement among
accountants and tax practitioners and the issue of ethics has been brought publicly to the forefront of the profession. Nevertheless,
the nature and dimension of ethical issues in tax practice have been largely unexplored (Erard, Journal of Public Economics
52(2), 163–197, 1993; Marshall et al., Journal of Business Ethics
17(12), 1265–1279, 1998; Frecknall Hughes, Unpublished PhD Thesis, The University of Leeds, 2002). This research aims to contribute
to the debate on ethics in tax practice by reporting interview data on tax practitioners’ perceptions of ethics in the jurisdictions
of Ireland and the United Kingdom and exploring the link or equation of ethics with risk management. 相似文献
39.
Keith S. Coulter 《心理学和销售学》2005,22(1):31-49
Researchers have investigated a number of different psychological constructs that occur as a result of advertising exposure and that contribute toward the formation of attitudes toward the ad (Aad) and brand (Ab). The dual mediation model (DMM), which defines hypothesized interrelationships among these constructs, has been well supported in previous research, but fails to empirically distinguish between the quantitative versus qualitative effects that can occur as a result of increased elaboration. To address this issue, the author incorporates cognitive resource matching theory into the DMM framework, arguing that construct means, the relative proportions of those means, and the links among model constructs are moderated by level of processing motivation. The results of empirical testing of a modified version of the DMM under alternate resource conditions are consistent with this theoretical explanation. © 2005 Wiley Periodicals, Inc. 相似文献
40.
Keith Warnock 《Accounting & Business Research》2013,43(86):179-188
This paper summarises the results of a detailed examination of the contents of explanatory notes of Statements of Standard Accounting Practice. The presentation of argument in the explanatory notes is discussed in the light of recent writings on rhetoric, and the Accounting Standards Committee is assessed in terms of its performance as a persuader rather than by reference to the substantive requirements of SSAPs. The paper suggests that changes in the structure of future accounting standards would be desirable, and concludes by linking the rhetorical perspective to the notion of a conceptual framework. 相似文献