电子商务与信息交流

Electronic Commerce is a new business mode. Proceeding from information communication, this paper analyzes the information communication mode in Electronic Commerce, the impetus of information communication to Electronic Commerce and the influence of information communication on all stages of Electronic Commerce.     

Web数据库技术综述

Web-Database is the base of many network applications such as Web information retrieval system, Web information publishing and Electronic Commerce. This article focuses on several popular Web-Database technologies such as CGI, ISAPI, IDC, ASP and Java Applet, analyzing and comparing their structure, characteristics, advantages and disadvantages. Finally, it discusses the main structure of the Web-Database technology.     

Team for Research on Methanol-to-Olefins Technology

Olefins, traditionally derived from oil, are important basic materials for the modern chemical industry. To make olefins from coal rather than oil has been a dream and also a big challenge for scientists all over the world. The step from methanol to olefins is vital in the transformation from coal or natural gas to olefins, as technologies for turning coal into methanol and olefins into other chemicals have been well established. The team at the CAS Dalian Institute of Chemical     

Research demystifies the interaction between Rituximab and its target

As the first US FDA-approved monclonal antibody drug for the treatment of B-cell lymphomas and later on for the treatment of autoimmune diseases, Rituximab has been widely sold under the trade name of Rituxan ever since 1997 with an average sales volume over US＄ 2 billion each year in the US.However, the recognition mechanism between Rituximab and its target CD20, an antigen expressed on the surface of mature B-cells, remained unclear. Now, an important step toward decoding the longstanding problem is achieved by scientists at the CAS Shanghai Institutes for Biological Sciences(SIBS) and their collaborators from the Second Military Medical University.     

Earth Observations in China and the World： History and Development in 50 Years

Remote sensing, which came into being at the first International Symposium on Remote Sensing of Environment （ISRSE） 50 years ago, has enabled people to obtain objecive and realistic spatial and temporal information through the application of Earth observation technologies and analyze and understand the macro-level changes of the Earth system from a spaial view. The technology of Earth observaion from space has incomparable advantages in the study of the Earth. This aricle introduces the 50-year development of Earth observaion in the world and the 30-year development of Earth observaion in China and reflects on the building of China＇s Earth observaion system.     

China's Space-science Satellite Series is Taking Shape and Will Hopefully Achieve Important Discoveries at Scientii c Frontiers

<正>China has made great progresses in space technologies since the launch of its fi rst artifi cial satellite and prepared itself for the rapid development of space science.By using foreign observation data for many years,a large number of space scientists have been cultivated in China[1].However,except for a few space science experiments conducted on several satellites and the Double Star mission,China is obviously short of its own science satellite plans and fi rst hand data.China has yet to give full play to the driving and leading role of space science satellite programs in the development of space technologies.To ensure the sustainable development of space science,narrow the gap between China and developed countries in cutting edge scientifi c discoveries and application-oriented innovation,and inject new vitality into the development of     

Nano-Kirigami: A Nanoscale “Paper-cut” Developed For 3D Intelligent Nanofabrication

正Kirigami is one of the most traditional Chinese arts(named"paper-cuts"or"jianzhi")that has been widely used in window decorations,gift cards,festivals,ceremonies,etc.Through cutting and folding flat objects into 3D shapes,the knowledge of kirigami has recently aroused tremendous interests in both sciences and technologies,including deployable designs of solar arrays,biomedical devices and micro-/     

The future of carbon neutrality from a scientific research perspective:an interview with Jing-Hai Li

<正>Since China announced that it will strive to achieve carbon peak by 2030 and carbon neutrality by 2060, it has become the focus of the whole society.The implementation of carbon peaking and carbon neutrality goals requires a range of revolutionary technologies and involves an array of key scientific questions.A great deal of research has focused on the development of new concepts and innovative technologies on carbon science and sustainable development.     

A milestone in methane conversion

<正>Direct conversion of methane,the dominating component of natural and shale gases,into key chemical feedstock and liquid fuels has long been a big challenge in chemistry and chemical engineering[1,2].he industrial processes for methane-resourced higher hydrocarbons(e.g.olein and gasoline)are based on indirect methane conversion integrating several catalytic reaction technologies.he production of syngas(a mix-     

Triboelectric nanogenerators as wearable power sources and self-powered sensors

Smart we arable technologies are augmenting human bodies beyond our biological capabilities in communication,healthcare and recreation.Energy supply and information acquisition are essential for wearable electronics,whereas the increasing demands in multifunction are raising the requirements for energy and sensor devices.The triboelectric nanogenerator(TENG),proven to be able to convert various mechanical energies into electricity,can fulfill either of these two functions and therefore has drawn...     

Issues in the management of web technologies: a conceptual framework

The current spate of activities in Electronic Commerce draws upon many web-based technologies. Inspite of the large amount of literature being put out on Electronic Commerce, there is no coherent model or theory bearing on issues of the management of Web technologies. This paper makes a beginning in this direction by outlining a conceptual framework for management of Web technologies. The existing literature in the Mangement of Information Technology reveals four major themes: management of investment; management of change; management of quality; and management of technology organization. This paper elaborates on all the four themes in the light of Web technologies.     

DTIC及其五年战略规划

美国国防技术信息中心是为美国国防部门提供国防部和政府资助的科学、技术、工程和商业相关信息产品的最大资源中心,主要任务是为美国国防部及其用户收集和传播科学技术信息,以防科学研究的重复性,并确保研究技术的先进性。2007年,DTIC制定了一个《2007—2012战略规划》,着重阐述了DTIC未来发展构想和工作重点。本文在介绍DTIC发展历史、服务宗旨、作用地位、机构编制、工作任务、核心职能、专业结构等基础上,着重分析DTIC的战略规划可供借鉴的经验。     

电子商务的知识产权研究

As a revolutionary new situation of international trade,the rise of global Electronic Commerce makes a strong impact on the current intellectual property right system,and also poses some new problems.Whether we can successfully solve these problems shall directly influence the development of Electronic Commerce.This paper,from the angle of intellectual property right,inquires into some hot topics about intellectual property right involved with Electronic Commerce.     

试论电子商务信息流

本文主要对电子商务信息流的模型和特点进行了分析和阐述,并由此提出了影响我国电子商务发展的因素及对策。     

电子商务系统中统计分析的设计和实现

电子商务是以信息技术为基础的商务活动,而统计分析是电子商务系统中不可或缺的一部分。本文讲述了统计分 析在电子商务系统中的重要性,并介绍了统计分析及其统计分析结果图在电子商务系统中的设计和实现方法。     

我国电子商务与信用信息管理系统整合的构想

电子商务需要信用信息服务的支持,信用信息服务也最先在电子商务领域取得广泛的应用并体现其价值,本文结合我国电子商务发展中存在的问题以及我国信用管理系统的建设情况,提出电子商务与信用信息管理系统结合的模式。     

试论网络经济与信息经济、电子商务的关系

从几时起，网络经济与信息经济、电子商务成为众多媒体爆炒的对象。然而，网络经济与信息经济、电子商务之间的关系究竟是怎样的，还是有很多人不清楚。本文通过对信息经济、网络经济、电子商务内涵的阐述．分析了网络经济与信息经济、电子商务之间的关系。最后提出了面向网络经济，发展电子商务的重要性。     

电子商务条件下中国企业面临的机遇与挑战

电子商务作为一种全新的商务活动，正在改变全球企业的竞争态势，也给中国企业带来了机遇和挑战。本文详细分析了电子商务的兴起给中国企业所带来的挑战和机遇，并在此基础上，进一步提出了企业在电子商务条件下的应对策略。