全文获取类型
收费全文 | 671篇 |
免费 | 59篇 |
国内免费 | 9篇 |
专业分类
财政金融 | 25篇 |
工业经济 | 39篇 |
计划管理 | 214篇 |
经济学 | 71篇 |
综合类 | 49篇 |
运输经济 | 11篇 |
旅游经济 | 25篇 |
贸易经济 | 237篇 |
农业经济 | 10篇 |
经济概况 | 58篇 |
出版年
2024年 | 3篇 |
2023年 | 11篇 |
2022年 | 10篇 |
2021年 | 11篇 |
2020年 | 32篇 |
2019年 | 30篇 |
2018年 | 26篇 |
2017年 | 22篇 |
2016年 | 24篇 |
2015年 | 23篇 |
2014年 | 92篇 |
2013年 | 104篇 |
2012年 | 77篇 |
2011年 | 55篇 |
2010年 | 32篇 |
2009年 | 37篇 |
2008年 | 37篇 |
2007年 | 35篇 |
2006年 | 23篇 |
2005年 | 22篇 |
2004年 | 10篇 |
2003年 | 11篇 |
2002年 | 7篇 |
2001年 | 3篇 |
2000年 | 1篇 |
1999年 | 1篇 |
排序方式: 共有739条查询结果,搜索用时 312 毫秒
261.
企业进销存系统在企业生产过程中使用非常普遍,随着移动平台的普及,在移动设备中使用进销存系统进行企业生产管理变得越来越重要。文章根据移动平台的特点开发了一个跨平台的进销存系统,使得企业管理者能够随时掌握生产销售信息,为了实现跨平台使用,采用了混合式开发模式,使得系统能够使用在多种类型的移动设备中。 相似文献
262.
文章通过对移动语音网IP化改造背景和移动网网络现状的分析,提出移动语音网IP化改造最终目标、总体原则,并探讨具体的改造步骤,旨在丰富现代移动通信网络架构,提高通信质量,使移动网络科技发展成果惠及广大民众。 相似文献
263.
在移动终端技术迅猛发展、手机网民持续增多的背景下,移动互联网展现出强劲的发展势头,盈利始终是移动互联网价值链中企业关注的焦点所在。面对移动互联网产业发展环境、用户免费消费习惯及盈利模式尚不成熟的盈利困境,基于生态价值链的视角,以用户需求为导向,本文从系统层面的价值创造、协同合作、缝隙市场探索盈利对策,同时从个体层面以专业化、创造性、精准化寻求价值链个体企业的盈利策略,最终实现移动互联网生态价值链参与主体的共生共赢。 相似文献
264.
265.
移动应用产品往往需要考虑多种设备和多个平台的支持,单一平台很难保证应用的覆盖面。但是,从开发的角度而言,多平台之间开发技术的差异,导致开发跨平台原生应用的成本过高。因此,出现了一种中间件的折中方案,它填补Web代码和设备原生代码之间的缺口,并为各个平台生成应用。本文将介绍这种基于Web技术构建的混合型移动应用的开发方案,面向快速开发跨平台移动应用的需求。 相似文献
266.
文章通过对现有电子支付行业现状及优劣势进行分析后,提出了一种基于手机号码为凭证、现有金融体系为载体的新型支付手段。通过以手机号为账户号的移动金融账户,输入手机号码和交易密码即可实现基于银联POS机的线下消费。 相似文献
267.
终端用户对移动电子商务安全的信任程度已成为进一步发展移动电子商务的主要阻力,尤其阻碍了移动支付业务的发展。基于层次分析法和神经网络理论,将AHP与训练后的RBF神经网络相结合完成对电子商务交易的信任评价,较好地解决了移动电子商务交易支付的信任问题。 相似文献
268.
269.
Julie Barnett Lada Timotijevic Marco Vassallo Richard Shepherd 《Journal of Risk Research》2013,16(4):525-540
There is a widespread academic and policy debate about public responses to precaution in public health campaigns. This paper explores these issues in relation to the precautionary stance adopted in the UK around the regulation of mobile telecommunications. The aim of the paper is to examine the nature of attitudes to precaution, and the way in which these, along with other relevant variables, relate to the intention to adopt relevant behaviours. The results from an experimental study (n = 173) indicate that people distinguish between two dimensions of precaution: firstly in relation to its value or necessity per se and secondly as anchored to notions of governance. The two variables differentially relate to other variables including trust and uncertainty, and are predictive of intended behaviour change indirectly, through worry about mobile phone risks. Precautionary advice was generally interpreted as causing concern rather than providing reassurance. The results suggest that precaution may be considered a valuable stance but this does not mean that it is seen as good governance or that it will reduce concern. Whilst the discourse of precaution is aimed at reducing concern, it appears that the uptake of relevant behaviours is largely triggered by worry. 相似文献
270.
Some lay people confronted with a new base station project fear serious health consequences from the high‐frequency radiation, while experts consider exposure under the current international standards as unproblematic. These conflictive estimations may be attributed to the different mental models of lay people and experts. Less is known about lay people’s knowledge in regard to mobile communication and their intuitive understanding of the associated health risks. An adaptation of the ‘Mental Models Approach’ was used to reveal lay people’s beliefs about mobile communication and to learn more about lay people’s information requirements, potential knowledge gaps, and misconceptions. Through the means of open interviews with Swiss experts (N = 16), lay people (N = 16), and base station opponents (N = 15), different mental models were constructed and evaluated. Comparisons between the expert and the lay groups showed several qualitative differences in all identified knowledge domains. Knowledge gaps in regard to changing exposure magnitudes due to the interaction patterns of cell phones and base stations as well as misconceptions about regulation issues and scientific processes were found in both lay groups. In addition, lack of trust in responsible actors and disaffection with base station location processes were mentioned. The reported qualitative insights may be useful for the improvement of further risk communication tools. 相似文献