全文获取类型
收费全文 | 2033篇 |
免费 | 125篇 |
国内免费 | 12篇 |
专业分类
财政金融 | 162篇 |
工业经济 | 178篇 |
计划管理 | 783篇 |
经济学 | 234篇 |
综合类 | 161篇 |
运输经济 | 40篇 |
旅游经济 | 10篇 |
贸易经济 | 349篇 |
农业经济 | 103篇 |
经济概况 | 148篇 |
信息产业经济 | 2篇 |
出版年
2024年 | 27篇 |
2023年 | 47篇 |
2022年 | 57篇 |
2021年 | 43篇 |
2020年 | 73篇 |
2019年 | 62篇 |
2018年 | 38篇 |
2017年 | 44篇 |
2016年 | 59篇 |
2015年 | 87篇 |
2014年 | 165篇 |
2013年 | 203篇 |
2012年 | 171篇 |
2011年 | 203篇 |
2010年 | 131篇 |
2009年 | 88篇 |
2008年 | 128篇 |
2007年 | 101篇 |
2006年 | 76篇 |
2005年 | 76篇 |
2004年 | 60篇 |
2003年 | 56篇 |
2002年 | 36篇 |
2001年 | 33篇 |
2000年 | 23篇 |
1999年 | 12篇 |
1998年 | 14篇 |
1997年 | 13篇 |
1996年 | 19篇 |
1995年 | 6篇 |
1994年 | 2篇 |
1993年 | 6篇 |
1991年 | 6篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 2篇 |
排序方式: 共有2170条查询结果,搜索用时 0 毫秒
1.
Marcin Maleszka 《Enterprise Information Systems》2019,13(7-8):1120-1142
ABSTRACTWe present a group dynamics model that shows knowledge integration as a process occurring over time. As each individual in the group contact others, his own knowledge changes, and over time the collective knowledge is obtained. This allows modeling knowledge diffusion in a social network and while the models presented in this paper are not competitive in that area, they approach the problem from previously unconsidered direction. We test the behavior of the model in a multi-agent simulation and we test a simple advertisement campaign in a social network. We provide discussion of elements needed for making model more competitive. 相似文献
2.
Tim Power 《Revue internationale de statistique》2003,71(1):59-67
This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field. 相似文献
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field. 相似文献
3.
Motivated by the implied stochastic volatility literature (Britten–Jones and Neuberger, forthcoming; Derman and Kani, 1997; Ledoit and Santa–Clara, 1998) this paper proposes a new and general method for constructing smile–consistent stochastic volatility models. The method is developed by recognising that option pricing and hedging can be accomplished via the simulation of the implied risk neutral distribution. We devise an algorithm for the simulation of the implied distribution, when the first two moments change over time. The algorithm can be implemented easily, and it is based on an economic interpretation of the concept of mixture of distributions. It can also be generalised to cases where more complicated forms for the mixture are assumed. 相似文献
4.
在介绍软件无线电的产生、基本概念和系统结构的同时,分析了实现软件无线电的关键技术,并给出了基于目前器件技术水平的中频软件无线电流程框图的折衷方案,最后指出软件无线电技术的美好前景。 相似文献
5.
This paper examines the effects of government deficits, public investment, and public capital on welfare in the transition to an aging Japan by applying a simulated general equilibrium growth model. One of the main results of this paper is that targeting only high economic growth would mislead us as to economic policies, and that a policy to reduce future government deficits is most preferable for almost all generations, even though a cut in future deficits must be followed by a decrease in public investment, thus a decrease in public capital in the future. J. Japan. Int. Econ., December 2002, 16(4), pp. 462–491. Faculty of Economics, Shiga University, Japan; and Management School, Imperial College, United Kingdom. © 2002 Elsevier Science (USA).Journal of Economic Literature Classification Numbers: H55, H54, H62, C68, J10. 相似文献
6.
7.
计算机软件的可专利性探析 总被引:3,自引:0,他引:3
如何对计算机软件提供充分而不过度的保护,这是各国立法选择和司法保护上的一个难题,也是一个国际性的问题。通过对计算机软件可专利性理论和实践的分析,可知计算机软件兼有专利权和著作权客体双重属性,并且软件专利保护优于著作权保护。本文从西方国家特别是美国对计算机软件法律保护的发展进程及其不同阶段的分析,提出了我国计算机软件专利保护的对策。 相似文献
8.
Borges del Rosal Africa San Luis Concepción Sánchez-Bruno Alfonso 《Quality and Quantity》2003,37(3):303-316
Quality &; Quantity - Cliff (1993) has proposed the use of a measure of effect size alternative to traditionalmean differences: δ {? = Pr(xi1 &;gt; xj2) - Pr(xi1 &;lt; xj2)}which,... 相似文献
9.
团队软件过程的研究与实践 总被引:2,自引:0,他引:2
迄今为止 ,学术界和产业界公认CMM是进行软件过程改进和软件过程评估的一个有效的指导框架 ,但是CMM中未提供有关实现子过程域所需要的软件过程持续改进的知识和技能 ,另外 ,软件产业的成功与发展 ,与软件开发单位的过程管理和过程规范密不可分。只有熟悉PSP(个人软件过程 )和TSP(团队软件过程 ) ,才能提供实施CMM所需要的过程管理改善的效果和技能 ,因此 ,进行PSP(个人软件过程 )和TSP(团队软件过程 )的研究与实践便显得十分必要。本文着重对TSP过程进行了具体的描述。 相似文献
10.