全文获取类型
收费全文 | 10698篇 |
免费 | 369篇 |
国内免费 | 154篇 |
专业分类
财政金融 | 325篇 |
工业经济 | 916篇 |
计划管理 | 3502篇 |
经济学 | 1922篇 |
综合类 | 1020篇 |
运输经济 | 47篇 |
旅游经济 | 111篇 |
贸易经济 | 1370篇 |
农业经济 | 613篇 |
经济概况 | 1395篇 |
出版年
2024年 | 68篇 |
2023年 | 196篇 |
2022年 | 312篇 |
2021年 | 391篇 |
2020年 | 369篇 |
2019年 | 196篇 |
2018年 | 180篇 |
2017年 | 199篇 |
2016年 | 266篇 |
2015年 | 421篇 |
2014年 | 998篇 |
2013年 | 1027篇 |
2012年 | 964篇 |
2011年 | 1072篇 |
2010年 | 895篇 |
2009年 | 563篇 |
2008年 | 573篇 |
2007年 | 535篇 |
2006年 | 443篇 |
2005年 | 391篇 |
2004年 | 279篇 |
2003年 | 206篇 |
2002年 | 173篇 |
2001年 | 150篇 |
2000年 | 109篇 |
1999年 | 64篇 |
1998年 | 48篇 |
1997年 | 31篇 |
1996年 | 14篇 |
1995年 | 20篇 |
1994年 | 19篇 |
1993年 | 8篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 6篇 |
1983年 | 12篇 |
1982年 | 10篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
A model of farmer decision making is developed to determine the extent to which uncertainties about soil fertility and weather affect the value of site-specific technologies (SSTs) using jointly estimated risk and technology parameters. Uncertainty can lead risk-averse farmers to apply more fertilizers and generate more pollution than in the certainty case. Ignoring uncertainty and risk aversion would overestimate the economic and environmental benefits of SSTs and underestimate the subsidy required to induce adoption. Accounting for uncertainties and risk preferences might explain the low observed adoption rates of SSTs. Improving the accuracy of SSTs would increase the incentives for adoption. 相似文献
12.
Electronic Data Interchange (EDI) is becoming increasingly important, and new organizational forms based on EDI suppliers’ capabilities are emerging. Therefore, taking advantage of recent technological changes, especially the development of Web-based EDI systems, many big industrial buyers are seeking to get all their suppliers EDI-connected. Based on previous research on EDI adoption, we conducted a survey to study the opportunities of success of such a “100% EDI-connected suppliers” policy using data from the vehicle industry. Findings from our survey helped us to understand suppliers’ responses to such a policy and to provide recommendations to industrial buyers who are seeking to succeed in a “100% EDI-connected suppliers” project. This includes employing tailored communication strategies and selecting appropriate incentives that take into account different levels of suppliers’ EDI-capabilities and suppliers’ dependence. 相似文献
13.
讨论了全低变工艺开发过程中遇到的一些问题和对策,对中、小氮肥企业进行技术改造具有一定的参考意义。 相似文献
14.
我国武器装备通用ATS(自动测试系统)经历了从引进、仿制到自行研制的过程,但是目前通用ATS总的局面是通用ATS不通用,这种局面主要是由于国内对通用ATS实现技术缺乏统一认识造成的。基于此,本文研究了与开发通用ATS密切相关的标准/规范、硬件配置技术、接口技术、集成测试软件开发环境技术。本文的研究结果适用于所有开发通用ATS的项目。 相似文献
15.
发达国家科技政策导向及其启示 总被引:3,自引:0,他引:3
当今世界,科技政策已成为许多国家尤其是美、日、欧等发达国家全力打造科技强国的基本的公共政策。文章从国家战略引导产业发展、国家政策促进产业发展、全力追求知识与技术创新、注重培养和吸纳优秀人才等4个方面对此进行了探析。 相似文献
16.
Kenneth K. Boyer G.Keong Leong Peter T. Ward Lee J. Krajewski 《Journal of Operations Management》1997,15(4):331-347
This research examines whether investments in advanced manufacturing technologies (AMTs) such as flexible manufacturing systems (FMS), computer aided design (CAD), computer aided manufacturing (CAM), robotics, etc., are more likely to lead to improved performance if they are supported by improvements in the manufacturing infrastructure of the company. This question is evaluated using data gathered from 202 manufacturing plants chosen from industries generally considered to have relatively high investments in technology.Multiple item scales are developed and adapted from sources in the literature to measure investments in technology, infrastructure, and the performance of the plant. Evidence supporting the reliability and validity of these scales is provided. Hierarchical regression is used to analyze the relationship between technology, infrastructure, and performance. The results suggest that there is an important interaction between the adoption of advanced manufacturing technologies and investments in infrastructure. Firms that invest in both AMTs and infrastructure perform better than firms which only invest in one or the other. Separate analyses on sub-samples of firms with the highest and lowest investments in AMTs show that infrastructural investments have a stronger relationship with performance in the high investment group. Thus, the data indicate that infrastructural investments provide a key to unlocking the potential of advanced manufacturing technologies. 相似文献
17.
企业技术创新与研究开发探讨 总被引:2,自引:0,他引:2
在社会主义市场经济环境中,企业的技术创新和技术研发被提升到一个从未有过的高度,这两个词汇也频频被知识经济下的各种传媒所引用。作者认为,如果对二者没有一个清晰的概念,忽略了它们本质上的差异,那么对“科学技术是第一生产力”就不会有深刻的理解,也无法说清技术对经济的影响,思想的混乱将会导致企业决策和行动的失误。本文结合企业的实际情况,就技术研发与技术创新的表现以及对企业发展的作用和影响,进行分析和探讨。 相似文献
18.
Alessandro Persona Alberto Regattieri Hoang Pham Daria Battini 《Journal of Operations Management》2007,25(6):1275
The paper analyzes the impact of e-business technologies on maintenance management and supply chain operations. The aim of this work is to investigate the network organization level of supply chains in case of remote maintenance application and to understand how maintenance policies are coupled with information technology (IT) solutions. To this purpose two literature reviews are presented: firstly, on the supply chain and network integration, and then on the evolution of maintenance using information technology. Following this, the paper present four specific industrial case-studies of eMRO network organisation. They have been chosen as reference models from a set of practical applications and pilot tests performed by the authors in different production sectors in the last 5 years. Technology complexity environments, maintenance outsourcing level, and supply chain integration context are discussed for each case-studies with particular regards to the profitable forms of collaboration provided by the introduction of IT and the Web. This analysis work toward the development of a framework useful to: (1) classify different e-maintenance systems and understand the relationships between the different members of the network, and (2) identify the variables which can influence the introduction and development of the systems. 相似文献
19.
基于RFID技术的电子商务物流体系研究 总被引:6,自引:0,他引:6
指出了基于RFID技术的电子商务物流体系的几大功能,论述了其体系结构及路线设计。 相似文献
20.