全文获取类型
收费全文 | 1368篇 |
免费 | 25篇 |
专业分类
财政金融 | 258篇 |
工业经济 | 93篇 |
计划管理 | 185篇 |
经济学 | 274篇 |
综合类 | 48篇 |
运输经济 | 1篇 |
旅游经济 | 13篇 |
贸易经济 | 362篇 |
农业经济 | 56篇 |
经济概况 | 101篇 |
邮电经济 | 2篇 |
出版年
2021年 | 9篇 |
2020年 | 10篇 |
2019年 | 24篇 |
2018年 | 10篇 |
2017年 | 19篇 |
2016年 | 31篇 |
2015年 | 21篇 |
2014年 | 46篇 |
2013年 | 126篇 |
2012年 | 30篇 |
2011年 | 27篇 |
2010年 | 35篇 |
2009年 | 57篇 |
2008年 | 37篇 |
2007年 | 46篇 |
2006年 | 36篇 |
2005年 | 48篇 |
2004年 | 35篇 |
2003年 | 39篇 |
2002年 | 37篇 |
2001年 | 33篇 |
2000年 | 30篇 |
1999年 | 22篇 |
1998年 | 21篇 |
1997年 | 24篇 |
1996年 | 24篇 |
1995年 | 20篇 |
1994年 | 25篇 |
1993年 | 21篇 |
1992年 | 19篇 |
1991年 | 28篇 |
1990年 | 21篇 |
1989年 | 15篇 |
1988年 | 19篇 |
1987年 | 22篇 |
1986年 | 19篇 |
1985年 | 29篇 |
1984年 | 43篇 |
1983年 | 28篇 |
1982年 | 25篇 |
1981年 | 20篇 |
1980年 | 23篇 |
1979年 | 14篇 |
1978年 | 13篇 |
1977年 | 20篇 |
1976年 | 10篇 |
1975年 | 17篇 |
1974年 | 16篇 |
1973年 | 9篇 |
1971年 | 9篇 |
排序方式: 共有1393条查询结果,搜索用时 15 毫秒
31.
Determinants of Industrial Property Value 总被引:3,自引:0,他引:3
This paper examines the determinants of industrial properly value. We use the factor-analytic linear structural relations (LISREL) model to confront measurement problems associated with related work. A simultaneous test of the effects on property value of factors summarizing physical property, national market, local market, interest rate and location variables is performed. Findings indicate that the value of industrial buildings during 1987–1991 in the Dallas/Fort Worth area is primarily related to local market effects and to physical characteristics and location of the property. 相似文献
32.
In this paper we study the pricing and hedging of options whose payoff is a polynomial function of the underlying price at
expiration; so-called ‘power options’. Working in the well-known Black and Scholes (1973) framework we derive closed-form
formulas for the prices of general power calls and puts. Parabola options are studied as a special case. Power options can
be hedged by statically combining ordinary options in such a way that their payoffs form a piecewise linear function which
approximates the power option's payoff. Traditional delta hedging may subsequently be used to reduce any residual risk. 相似文献
33.
The Effects of Bilateral Tax Treaties on U.S. FDI Activity 总被引:1,自引:0,他引:1
The effects of bilateral tax treaties on FDI activity have been unexplored, despite significant ongoing activities by countries to negotiate and ratify these treaties. This paper estimates the impact of bilateral tax treaties using both U.S. inbound and outbound FDI over the period 1980–1999. Robust to a wide variety of alternative specifications, we find little evidence that bilateral tax treaties increase FDI activity, contrary to OECD-stated goals for such treaties. 相似文献
34.
Increase (decrease) in loan loss provisions would decrease (increases) bank earnings, but increase (decreases) regulatory capital. Previous studies have separately documented earnings and capital management behavior via loan loss provisions by commercial banks. However, it is difficult to isolate a bank's demand for increasing earnings from its demand for regulatory capital because earnings is a source of capital. Based on the objective bank function, this study investigates the impact of SFAS No. 114 on the information content of loan loss provisions in relation to both earnings quality and capital adequacy in a linear information dynamic framework. Test results show that the association between market value with loan loss provisions became significantly stronger for commercial banks in the post- than in the pre-adoption period. As a result, SFAS No. 114 is also found to positively affect the association of market value with both bank earnings and regulatory capital through the clean surplus relation because of the higher value relevance of loan loss provisions. The findings thus provide empirical evidence that SFAS No. 114 has significantly complemented banking regulations in enhancing (reducing) the (dispersion from the) accounting measurement construct of loan loss provisions. 相似文献
35.
To our knowledge, this research is the first to focus on the critical moderating role that user training and support play on the relationship between the use of sales force automation tools and salesperson performance (i.e., effectiveness: percent-to-quota and efficiency: average number of calls per day). Hypotheses are tested using survey data from a sample of 108 salespeople in a business-to-business context and archival sales performance information. Moderated regression analysis results indicate that the use of sales force automation tools only enhances salesperson efficiency and effectiveness under conditions of adequate user support and training. In fact, under low levels of user training and support, the use of sales force automation tools was found to reduce salesperson efficiency and effectiveness. These findings have important implications for IT and sales managers since the results show that only under certain conditions will companies realize a return on their investment in SFA tools. Limitations and future directions for research are then discussed. 相似文献
36.
Ecological integrity is important to fully describe the development of an economy. We calculated an aggregate index that quantifies the closeness of a forested region to a natural state. This naturalness index was based on the diversity of native tree species and sizes for ecological subregions in a seral condition. The index used the spatial–temporal array of sample plots from the Forest Inventory and Analysis (FIA) database of the USDA Forest Service. In the 70 survey units of the southern US between 1961 and 2005 the naturalness of forests generally improved with per capita personal income and population. The increase with income was consistent with the hypothesis of an environmental Kuznets curve for forested landscapes. 相似文献
37.
38.
39.
Iain L. MacDonald 《Revue internationale de statistique》2014,82(2):296-308
There is by now a long tradition of using the EM algorithm to find maximum‐likelihood estimates (MLEs) when the data are incomplete in any of a wide range of ways, even when the observed‐data likelihood can easily be evaluated and numerical maximisation of that likelihood is available as a conceptually simple route to the MLEs. It is rare in the literature to see numerical maximisation employed if EM is possible. But with excellent general‐purpose numerical optimisers now available free, there is no longer any reason, as a matter of course, to avoid direct numerical maximisation of likelihood. In this tutorial, I present seven examples of models in which numerical maximisation of likelihood appears to have some advantages over the use of EM as a route to MLEs. The mathematical and coding effort is minimal, as there is no need to derive and code the E and M steps, only a likelihood evaluator. In all the examples, the unconstrained optimiser nlm available in R is used, and transformations are used to impose constraints on parameters. I suggest therefore that the following question be asked of proposed new applications of EM: Can the MLEs be found more simply and directly by using a general‐purpose numerical optimiser? 相似文献
40.
Ronald Leung Marco Stampini Desire Vencatachellum 《The South African journal of economics. Suid-afrikaanse tydskrif vir ekonomie》2014,82(1):99-116
The financial and economic crisis of 2008 and 2009 took a heavy toll on the South African economy. The economy contracted for the first time since 1998 and entered recession during the fourth quarter of 2008. The gross domestic product contraction was soon transmitted to the labour market. Between the second quarters of 2008 and 2009, employment fell by 3.8%. However, not all individuals were hit with the same intensity. Using panel data from a quarterly labour force survey unique in the African context, we find that human capital (i.e. education as years of schooling and workforce experience) provided a buffer against the shock. After controlling for observable characteristics, education and experience showed the potential to entirely offset the effect of the recession on the likelihood of employment. This has important policy implications, as it strengthens the case for strategic investments in human capital and helps identify the unskilled as having the greatest need for social safety net interventions during a recession. 相似文献