供应链环境中路径编码方法研究

随着现代供应链应用的不断发展和完善,对流通物品进行路径追溯显得越来越重要,而实现路径追溯的关键是对路径中的结点进行有效编码,以保证提供高效查询及更新。本文主要对目前广泛使用的编码方法包括区间编码、前缀编码、素数编码及向量编码等的实现原理进行了讨论,并结合供应链特点分析了它们的优缺点。最后,指出了供应链环境中路径编码方法的未来研究方向。     

农畜产品信息追溯系统面向3G的扩展与设计

本文针对原有农畜产品信息追溯系统中存在的不足,抓住3G技术普及带来的机遇,基于智能手机Android平台对江西省某农业产业化龙头企业的农畜产品信息追溯系统进行了3G功能扩展的有益尝试,对系统的3G智能终端功能、SQLite轻型数据库和追溯编码进行了扩展设计。     

AMR语音编码技术及其在移动通信中的应用

首先对AMR(自适应多速率语音编码)及其关键技术进行简单介绍,然后分析了该技术在移动通信领域的实际应用情况,最后对AMR编码技术进行总结并展望其未来的发展.     

药品追溯码在医药仓储物流自动化中的应用

<正>自2016年药品电子监管码系统停用之后,第三方药品追溯平台不断发展壮大,药品追溯码是药品追溯平台的核心数据以及溯源载体。药品追溯码是指为每件最小销售包装单位的药品赋予的独立标识标签,即"一物一码",不同的药品对应不同的编码,使得不同的药品均有属于自己的独一无二的"身份证"。追溯码普遍应用在药品的扫码查询方面,很少被应用于其他方面。医药仓储物流是医药企业自动化、智能化的重要组成部分,本文将对药品追溯码在医药仓储物流自动化技术中的应用进行具体论述。     

正交空时分组编码在Nakagami信道中的性能分析

空时编码技术是信道编码技术和天线分集技术的结合,而Nakagami衰落信道能够准确表示实际衰落环境。基于此本文研究了空时分组码在Nakagami衰落信道中的性能,并对其进行了仿真和分析.     

基于社交网络的谣言追溯技术及对策研究

【目的/意义】现代信息技术的发展为谣言快速传播提供了土壤,如何快速、准确地追溯谣言散播的源头具 有重要意义。【方法/过程】从社交网络技术这一新的视角对谣言源头进行追溯,提出了最大相似法来对疑似源头节 点进行检查,从而找到最终的谣言源头,并通过实验进行了验证。【结果/结论】基于对追溯技术的分析,进而提出了 控制谣言传播及追溯谣言的对策,为政府的谣言控制决策和源头追溯提供了理论依据及建议。     

数字图像编码标准的发展研究

数字图像编码技术是数字信息传输、存储、播放等环节的前提和基础.本文概述了国际国内视频编码标准发展的过程,并分析了混合编码结构框架的技术特点.对目前作为混合编码互补之势的可伸缩编码、多视点视频编码进行了分析,揭露了其关键技术.     

中药材栽培管理和质量追溯技术

质量追溯技术是应用各种手段对产品生产、包装、运输、销售等各个过程进行追踪的一种技术,最早应用于国内的畜禽产品领域,后来又扩展到水果、蔬菜等领域,近几年,质量追溯技术在中药材领域的应用发展迅速,受到大众瞩目。研究发现,目前存在的质量追溯技术均为事后追溯,可以追踪到中药材生产的各个问题环节,但是不能从源头上解决问题,为了弥补这一缺点,我们计划开发一款软件将栽培管理技术与质量追溯技术相融合,真正实现对中药材整个产业链的可控,可查,可监测。     

基于区块链技术的药品追溯体系的构建研究

药品追溯体系的构建是实现药品“可溯源、知去向、易追责”的关键环节,对于我国药品行业持续健康发展具有重要意义。然而现阶段我国兜售假药、问题疫苗等现象时有发生,且相关部门无法及时有效的打击制止此类恶劣行为,导致市场上药品监督管理秩序混乱,亟需构建基于区块链技术的药品追溯体系规范企业行为。通过分析构建药品追溯体系的基本动因,运用区块链技术重塑现有的药品追溯体系,最后从国家政府、社会企业、消费者三个层面探讨该新型体系的具体实现路径,以期推动基于区块链技术的药品追溯体系有序、高效运作。     

交织编码在遥测图像传输中的应用研究

交织编码主要是根据具体的移动通信氛围来强化移动通信信号的一种通信技术.运用交织编码技术能够有效离散并改善数字信号传输的突发性错误,使移动通信具有较高的传输特性.本文首先论述了交织编码技术,其次,对交织编码在遥测图像传输中的应用进行了分析研究.     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence     

Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels

<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese     

More than Skin Deep – Understand Skin Biology by Means of Dermatogenomics

<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages.