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81.
A Semiparametric Method for Valuing Residential Locations: Application to Automated Valuation 总被引:1,自引:0,他引:1
John M. Clapp 《The Journal of Real Estate Finance and Economics》2003,27(3):303-320
This paper is motivated by automated valuation systems, which would benefit from an ability to estimate spatial variation in location value. It develops theory for the local regression model (LRM), a semiparametric approach to estimating a location value surface. There are two parts to the LRM: (1) an ordinary least square (OLS) model to hold constant for interior square footage, land area, bathrooms, and other structural characteristics; and (2) a non-parametric smoother (local polynomial regression, LPR) which calculates location value as a function of latitude and longitude. Several methods are used to consistently estimate both parts of the model. The LRM was fit to geocoded hedonic sales data for six towns in the suburbs of Boston, MA. The estimates yield substantial, significant and plausible spatial patterns in location values. Using the LRM as an exploratory tool, local peaks and valleys in location value identified by the model are close to points identified by the tax assessor, and they are shown to add to the explanatory power of an OLS model. Out-of-sample MSE shows that the LRM with a first-degree polynomial (local linear smoothing) is somewhat better than polynomials of degree zero or degree two. Future applications might use degree zero (the well-known NW estimator) because this is available in popular commercial software. The optimized LRM reduces MSE from the OLS model by between 5 percent and 11 percent while adding information on statistically significant variations in location value. 相似文献
82.
83.
A taxonomy of internationally dispersed technology units and its application to management issues 总被引:3,自引:0,他引:3
John W. Medcof 《R&D Management》1997,27(4):301-318
Internationally dispersed technology units are classified using a system based upon three clearly defined dimensions: Type of technical work (research, development or support); functional areas with which the technology unit collaborates in its work (marketing, manufacturing, marketing and manufacturing, or none); and geographic area of collaboration (local, international). The resulting eight category taxonomy is shown to provide an improved platform for organizing and integrating the literature on the management of internationally dispersed technology units and for articulating theoretical issues in ongoing programs of empirical research. 相似文献
84.
This study investigates the influence of the source of R&D funds and management ownership on R&D productivity. The lagged effect of the source of R&D funds on R&D output is investigated for a sample of US manufacturing firms in five industries over the 1996–99 period. Estimates based on 779 firm-years show that R&D productivity increases with the proportion of stock held by managers and directors of firms primarily in the Other Electronics industry. The estimates also show that recipients of government-sponsored R&D funds in the Chemicals industry have lower levels of output (sales) for each dollar committed to R&D. In addition, output for firms in the Chemicals industry worsens as management stockholding increases, implying an agency cost rationale for the observed difference in output. The implication is that firms with high manager-owner content are less productive with government-sponsored R&D than with company-financed R&D. The reported results suggest that potential agency costs should be incorporated in government-sponsored R&D contracts. It also suggests that the source of R&D funds should be disclosed and incorporated into the valuation of intangible assets attributable to research and development. 相似文献
85.
This paper is essentially a summary of the book Measuring the Nation's Wealth (Volume 29, Studies in Income and Wealth, New York: National Bureau of Economic Research, 1964), which is the report of study directed by the author. The purpose o f the study was to assess the problems and possibilities of conducting a national census of real wealth as a basis for continuing wealth and balance sheet estimates for the U.S. economy, by major sector.
It is stressed that the balance sheets and wealth estimates should be designed as a consistent part of an integrated system of national income accounts. Thus, valuation (at market prices and/or depreciated replacement costs), sectoring, and type-of-asset detail in the basic data and derived estimates should be compatible with the flow estimates contained in the economic accounts. Consistency of stock and flow estimates facilitates analysis of inter-relationships, and is helpful in the estimation process.
It is recommended that in the U.S. asset data by broad categories be collected as part of the recurring economic censuses and other reporting systems, but that detail on fixed reproducible assets (construction and equipment) at cost, by year or period of acquisition, be obtained from a small sample of respondents in each industry. The detail would be useful in its own right, and also permit revaluation of the assets by use of price indexes and depreciation rates to a current depreciated replacement cost basis. Where feasible, respondent estimates of market values would also be obtained.
The proposal is thus a compromise between the Japanese 1955 sample survey of assets, and the detailed wealth inventory of the U.S.S.R. which was begun in 1959. Preliminary work is now underway in the U.S. federal statistical agencies to expand collection of asset data, and to prepare comprehensive wealth estimates in the framework of the national income accounts. 相似文献
It is stressed that the balance sheets and wealth estimates should be designed as a consistent part of an integrated system of national income accounts. Thus, valuation (at market prices and/or depreciated replacement costs), sectoring, and type-of-asset detail in the basic data and derived estimates should be compatible with the flow estimates contained in the economic accounts. Consistency of stock and flow estimates facilitates analysis of inter-relationships, and is helpful in the estimation process.
It is recommended that in the U.S. asset data by broad categories be collected as part of the recurring economic censuses and other reporting systems, but that detail on fixed reproducible assets (construction and equipment) at cost, by year or period of acquisition, be obtained from a small sample of respondents in each industry. The detail would be useful in its own right, and also permit revaluation of the assets by use of price indexes and depreciation rates to a current depreciated replacement cost basis. Where feasible, respondent estimates of market values would also be obtained.
The proposal is thus a compromise between the Japanese 1955 sample survey of assets, and the detailed wealth inventory of the U.S.S.R. which was begun in 1959. Preliminary work is now underway in the U.S. federal statistical agencies to expand collection of asset data, and to prepare comprehensive wealth estimates in the framework of the national income accounts. 相似文献
86.
87.
88.
This research explores the acquisition of customer input and its importance in the development of very new products. Data were gathered on 55 product development projects from the computer telephony integration industry – a new industry experiencing rapid technological change. The data were used to test hypotheses concerning the relationships between product newness, the importance of customer input in the development process, and the use of customer intensive market research methods. We found that the importance of customer input increases with market newness of a product up to a point and then drops off for very new products, whereas the importance of customer input increases with technological newness of a product without dropping off. We also found that the importance of customer input significantly increases the use of customer intensive market research methods; whereas, neither market nor technological product newness in themselves had much direct effect on research methods. 相似文献
89.
John D. Abell 《The Review of Black Political Economy》1989,18(2):43-60
This article uses vector autoregression analysis to examine the relative impacts on black and white employment growth of monetary
and fiscal actions. It was found that the employment responses to anticipated policy actions, while significant, were generally
short-lived, with the exception of the effects of anticipated money growth on white employment. The influences of unanticipated
policy changes are of a longer duration. The predominant finding in which black employment growth responded differently from
white employment growth was in response to a monetary shock. The black employment response was sharply negative while the
white employment response was a gradual increase over nine quarters. The results indicate that this difference occurred only
during the 1980s and not in the 1970s and suggests that the effects of bank failures and credit rationing during this period
may have significantly hurt minority employment opportunities. 相似文献
90.
UK Industrial Policy: Old Tunes on New Instruments? 总被引:1,自引:0,他引:1
This paper discusses the current Labour government's industrialpolicyas most recently reflected in its document on manufacturingstrategyin the context of industrial policy in the UKover the last 50 years and the form that it has taken elsewherein Europe. It concludes that the thematic priorities for UKindustrial policy in the 1960sinternational competitiveness,innovation, competition, and skillscontinue to be thekey themes of UK policy today. The paper presents data thatillustrate the gaps that exist in key indicators of performancebetween the UK and its main economic competitors. The differencebetween the 1960s and the 2000s is that there are new instrumentsof policy. Two areas in particular are focused oncompetitionpolicy and technology policyand an attempt is made toassess the likely effectiveness of these new instruments. Thepaper concludes that the international evidence base for thesenew approaches is reasonably robust but that it is still toosoon to tell if they are having the hoped-for impact on theperformance of the UK economy. 相似文献