我国信息化条件下国际贸易实务研究     

倪勇  刘元宁  李闯 《情报科学》2006,24(10):1481-1485

信息化在国际贸易中的作用日益显现。本文从国际贸易信息化进程的现状谈起，分析了国际贸易应用信息化技术所引发的一系列变革，并在此基础上，依据传统的国际贸易流程，综合了我国进出口贸易信息处理的特点，提出了中国国际贸易信息化的三层结构总体框架模型和实务商务过程模型。  相似文献   

An empirical investigation of information sharing behavior on social commerce sites     

《International Journal of Information Management》2016,36(5):686-699

Social commerce sites (SCSs), a new model of social media, provide fertile ground for customers to communicate their opinions and exchange product- or service- related information. Given the significant opportunities related to the use of social media data for customers’ insight, we explore the factors driving information sharing behavior on SCSs. In this paper, we propose and empirically test a comprehensive theoretical model for customer information sharing behavior through analysis of online survey data as well as network and behavioral usage data of over four months from 1177 customers in a SCS. The research model was empirically validated with the use of both subjective and objective data in a longitudinal setting. Our results show that customer information sharing is influenced by both individual (i.e., reputation and the enjoyment of helping others) and social capital (i.e., out-degrees’ post, in-degrees’ feedback, customer expertise and reciprocity) factors. This study contributes to the existing literature by highlighting the role of directed social network in customer information sharing behavior on SCSs. We believe that the results of our study offer important insights to the IS research and practice.  相似文献   

市场因素与高技术产业创新成果转化:促进还是抑制?     

王斌  谭清美 《科学学研究》2016,(6):850-859

利用1995-2012年中国五个一级高技术产业面板数据,建立差分GMM模型、系统GMM模型,从动态视角分析了市场集中度、市场收益、市场外资化对创新成果转化的影响特征,研究发现:市场集中度对创新成果转化呈显著促进作用,若就此而言,市场集中度的适度提升可以容忍;市场收益提升可激励高技术产业创新成果转化,且市场集中度对市场收益促进创新成果转化有正向调节作用;外资所占市场份额的提升,对创新成果转化的影响呈倒"U"型特征,且市场集中度对外资势力因素促进创新成果转化有正向调节作用;在动态视角上,创新成果转化活动具有正向累积影响效应。相关结论和建议可为我国高技术产业创新成果转化实践提供借鉴意义。  相似文献   

Automatic extraction of bilingual word pairs using inductive chain learning in various languages     

Hiroshi Echizen-ya  Kenji Araki  Yoshio Momouchi 《Information processing & management》2006

In this paper, we propose a new learning method for extracting bilingual word pairs from parallel corpora in various languages. In cross-language information retrieval, the system must deal with various languages. Therefore, automatic extraction of bilingual word pairs from parallel corpora with various languages is important. However, previous works based on statistical methods are insufficient because of the sparse data problem. Our learning method automatically acquires rules, which are effective to solve the sparse data problem, only from parallel corpora without any prior preparation of a bilingual resource (e.g., a bilingual dictionary, a machine translation system). We call this learning method Inductive Chain Learning (ICL). Moreover, the system using ICL can extract bilingual word pairs even from bilingual sentence pairs for which the grammatical structures of the source language differ from the grammatical structures of the target language because the acquired rules have the information to cope with the different word orders of source language and target language in local parts of bilingual sentence pairs. Evaluation experiments demonstrated that the recalls of systems based on several statistical approaches were improved through the use of ICL.  相似文献   

我国居住水平的长期和短期影响因素实证分析     

符淼 《预测》2007,26(4):15-21

本文利用协整检验和面板数据分析我国居住水平的长期和短期影响因素。发现利率、收入房价比与居住水平存在长期协整关系,说明利率的提高长期会降低居住水平,限价、限开发房屋种类的政策是短期行为,提供低息房贷和发展中低档商品房的同时提高居民收入的方法才是长效的。面板数据分析发现提高人均收入和维持房地产市场稳定对提高居住水平有重要的作用。东西部房地产市场存在地区差异,东部对利率较敏感,中西部对收入和物价的变化较敏感,针对差异可选择不同的政策。  相似文献   

面向城市应急管理的情报能力建设思考     

李阳 《现代情报》2019,39(5):17-23

[目的/意义]研究面向城市应急管理的情报能力建设问题，既是大数据时代城市应急管理变革的基本要求，也是实现城市智慧应急的重要途径，能够推动应急管理情报支持的理论创新与实践应用。[方法/过程]立足情报能力与城市应急管理之间的逻辑关系，阐释城市应急管理情报能力的内涵，从多维视域探讨城市应急管理情报能力建设的主要内容，分析新时代城市应急管理情报能力建设的发展机遇。[结果/结论]情报能力建设是城市应急管理的关键支撑。城市应急管理情报能力建设涉及情报资源、情报人员、情报管理、情报技术、情报实战等多方面的内容。目前，应抓住新型智慧城市建设与情报治理创新两个方向的发展机遇，支持城市应急管理情报能力的综合提升。  相似文献   

Data Mining to Combat Terrorism and the Roots of Privacy Concerns     

Frans?A.?J.?BirrerEmail author 《Ethics and Information Technology》2005,7(4):211-220

Recently, there has been a heavy debate in the US about the government’s use of data mining in its fight against terrorism. Privacy concerns in fact led the Congress to terminate the funding of TIA, a program for advanced information technology to be used in the combat of terrorism. The arguments put forward in this debate, more specifically those found in the main report and minority report by the TAPAC established by the Secretary of Defense to examine the TIA issue, will be analysed to trace the deeper roots of this controversy. This analysis will in turn be used as a test case to examine the adequacy of the usual theoretical frameworks for these kinds of issues, in particular the notion of privacy. Whereas the dominant theoretical framing of the notion of privacy turns around access to information, most of the core arguments in the debate do not fit in this kind of framework. The basic disagreements in the controversy are not about mere access, they involve both access and use. Furthermore, whereas the issue of access by itself refers to a more or less static situation, the real disagreements much more concern the organisational dynamics of the use of information, the mechanisms in the organisation that control these dynamics, and the awareness present within the organisation of the ‘social risks’ these dynamics represent. The bottom line question is whether the assessment of these gives sufficient reason for trust.  相似文献   

基于OBE的信管专业大数据应用方向人才培养模式研究     

杜来红 《情报探索》2020,(6):101-104

[目的/意义]研究基于成果导向教育(OBE)的信息管理与信息系统专业大数据应用方向人才培养模式。[方法/过程]结合信息管理与信息系统专业特点、现状及其与大数据应用的联系,提出基于OBE教育理念进行分方向改革实践的理念,设置大数据应用方向。[结果/结论]采用递进式人才培养模式,在培养目标定位、课程体系规划等方面进行强化建设。  相似文献   

DAFS及其相关技术研究     

秦利 《情报理论与实践》2003,26(2):170-172

随着数字信息资源的快速增长 ,数字化技术、数字图书馆技术的成熟 ,数字图书馆建设的物质基础日趋成熟。建立数字图书馆的目的就是为了更好地为用户服务 ,但作为数字图书馆组成部分的存储系统 ,如果采用传统的存储体系 ,将会阻碍信息的快速服务。存储网络能够提供可扩展的、高性能的数据管理 ,同时用户的总费用很低 ,所以存储网络受到众多用户的青睐。存储网络技术一定程度地缓解了存储的压力 ,但是 ,主机ＣＰＵ的负荷并没有得到丝毫减轻 ,尤其是在运行多媒体应用和资源敏感数据库时 ,系统的开销极大地增加了访问数据的延迟 ,而成为新的瓶颈…  相似文献   

基于DEMATEL的电子商务数据质量影响因素研究     

孙俐丽  赵柳榕 《现代情报》2019,39(7):115-121

[目的/意义]大数据时代下，明确电子商务数据质量关键影响因素，无论对于电子商务企业准确把握数据质量改进方向还是学界聚焦商务数据质量根源性问题都有着重要意义。[方法/过程]通过扎根理论分析法对半结构化访谈获得的质性材料进行逐级抽象归纳，得出影响电子商务数据质量的影响因素，再通过复杂系统因素重要性判定的DEMATEL模型，对因素间关系进行计算。[结果/结论]经测算，发现电子商务数据质量的"起源型"影响因素包括数据质量的监管机制、质量意识、标准与规范、明确数据利用目的等因素，"结果型"因素包括数据开发应用管理、数据处理过程约束、质量意识等因素，而关键影响因素则主要集中在监管机制、质量标准、利用需求、质量意识等方面。  相似文献