ChemVillage、 CA on CD、 Chemistry Server和Beilstein/Gmelin CrossFile的比较分析   总被引：3，自引：0，他引：3  

任平  孙维莲  杨毅 《情报科学》2003,21(5):499-505

对几个重要的化学/化工类数据库（ChemVillage,CAon CD、Chemistry Server,Beilstcin/Gmelin Cross-Fire)的内容，检索平台等做了较全面的分析和比较。  相似文献   

Study on arsenic level in public water supply of Delhi using hydride generator accessory coupled with atomic absorption spectrophotometer   总被引：1，自引：0，他引：1  

Sanjeev Lalwani  T. D. Dogra  D. N. Bhardwaj  R. K. Sharma  O. P. Murty 《Indian journal of clinical biochemistry : IJCB》2006,21(1):70-76

Exposure to arsenic has been associated with several health hazards. Worldwide the main reason for chronic human intoxication with arsenic is intake of contaminated drinking water. Air acetylene type of atomic absorption spectrophotometer in combination with hydride generator accessory was used to analyze arsenic level in 25 water samples collected from 25 booster pumping stations and 313 water samples collected from tap water supply of 62 areas of Delhi. Results were analyzed using SPSS and Barlett’s Chi Square Test. Mean arsenic level detected in water samples collected from booster pumping stations was 0.00976 ppm (Range 0.000–0.017 ppm, Standard Deviation 0.006 and Standard error of Mean 0.00118). Maximum arsenic level (0.017 ppm) was found in water samples of booster pumping stations of Mehrauli, Punjabi Bagh and Ramjas Road. Mean arsenic level detected in samples collected from tap water supply was 0.013 ppm (Range 0–0.0430 ppm, Standard Deviation 0.00911 and Standard error of Mean 0.000515). In water samples of 42 areas arsenic level detected was exceeding WHO/EPA permissible limit of 0.01 ppm (10 ppb). The mean arsenic level detected in water samples of booster pumping station was within WHO/EPA permissible limit while mean arsenic level detected in tap water samples was marginally higher. Mixing of ground water and contamination through broken or leaking channel could be the possible reason of higher arsenic level in tap water. Continuous monitoring of quality of drinking water is required particularly in view of water contamination caused by industrial waste and uncontrolled ground water extraction.  相似文献   

H2S is synthesized via CBS/CSE pathway and triggered by cold conditions during Agaricus bisporus storage     

《Electronic Journal of Biotechnology》2021

  相似文献   

高校图书馆业务重组的理性思考--兼与陆宝益、郑建明商榷     

范翠玲 《情报理论与实践》2005,28(4):403-405

对高校图书馆业务部门与业务工作流程重组的理论与方法进行了再探讨，提出了一些现代高校图书馆管理应采取的有效措施。  相似文献   

对数字作品著作权保护的思考   总被引：8，自引：0，他引：8  

汤珊红 《情报理论与实践》2001,24(5):327-330

The emergence of digital works has brought new problems to the existing intellectual property system.As the traditional copyright law system lags behind the rapid development of network economy,the copyright systems in many countries are being improved,so are the relevant international pacts.This paper mainly discusses the digitalization right of traditional works,the copyright and copyright ownership of digital works,the copyright processing in the development of digital works and the countermeasures for the copyright protection in the network environment.  相似文献   

基于Bookmetrix的G20国家图书影响力比较研究     

杨思洛  邢欣  郑梦雪 《现代情报》2019,39(7):143-152

[目的/意义]对比分析G20国家图书影响力的现状，为我国提升图书国际影响力提供借鉴。[方法/过程]选择Springer收录的5个学科（化学、工程、医学、法律、历史）图书为样本，以Bookmetrix为数据源，在讨论指标覆盖率与相关性的基础上，从图书的产出数量、5类指标（下载量、引用量、提及量、读者量及评论量）以及合著关系3个方面展开比较分析。[结果/结论]研究发现：1）在指标覆盖率和相关性方面，整体情况与中、美、德等国家层面的表现类似。体现为图书的下载量覆盖率最高，读者量和引用量相关性值较高且稳定。2）中国的国际图书产出量与德国、美国、英国存在较大差距，但在指标均值、综合排名方面表现良好。3）在G20国家图书合著网络中，人文社科类图书国际合作强度明显低于理工类学科；美国、德国具有较高的科研合作实力与影响力；中国的国际合作具有一定基础，但整体影响力作用并不突出。  相似文献   

Psychological traits and loyalty intentions towards e-Government services     

Her-Sen Doong  Hui-Chih Wang  Gordon R. Foxall 《International Journal of Information Management》2010

Purpose

Having been rated the world's leader in e-Government Readiness in 2002, 2004, and 2005, Taiwan sought to capitalize on its experience in e-Government implementation by launching, in 2007, a new Government-to-Citizen service entitled “e-Housekeeper”. The success of this service has since then become an important focus for practitioners.

Methodology

The reported research utilizes a psychological approach that is different from the classical models that dominate the existing literature, by examining how citizens’ adaptive–innovative cognitive styles and involvement jointly influence their loyalty intentions towards e-Housekeeper. The style/involvement model is tested by means of information from a sample of 206 Taiwan citizens.

Findings

While innovators initiated e-Housekeeper significantly earlier than others, their usage did not last for long. In contrast, more-involved citizens have shown higher loyalty intentions. More specifically, a combination of decision-making style and involvement significantly influences both when citizens try the service and whether they continue to use it: more-involved adaptors reported the strongest loyalty intentions.

Originality/value

Practical implications of the findings for the style/involvement model are suggested in the context of enhancing the strategic performance of e-Government services. The value of the style/involvement model is enhanced as a social scientific approach to the analysis of consumer innovation.  相似文献   

论CKO的人选素质与职责任务   总被引：3，自引：0，他引：3  

卢青 《情报理论与实践》2001,24(5):331-333

This article discusses the essential conditions for a Chief Knowledge Officer (CKO),the competence capability he should possess for his multiple roles and the obligation and tasks he should undertake.  相似文献   

数字图书馆资源格式选择分析   总被引：2，自引：0，他引：2  

李睿 《情报理论与实践》2003,26(3):283-284

网络经济时代 ,以数字技术为支柱、以互联网为平台 ,为人们提供开放、智能信息服务的数字图书馆方兴未艾。而建设一个优秀的数字图书馆 ,不仅要依靠一个功能强大的数字图书馆系统 ,更需要以丰富的高质量的e Book(电子书 )作为其资源基础。本文将从数字图书馆资源建设过程中的e Book格式选择方面 ,讨论建设数字图书馆资源的关键问题。当前的e Book格式有多种 ,国际上最盛行的e Book格式有两种 :OEB (Opene BookPublicationStructure 1 0 )和PDF (PortableDocumentFormat) ,另外还有今年才出现的EBX格式 ,以及我国国内推出的CEB格式…  相似文献   

我国旅行社组织变革分析的新范式——企业流程再造的应用     

陈昆玉  陈昆琼 《情报理论与实践》2003,26(1):46-48

在经济日益全球化的今天 ,旅行社作为活动于供应商和消费者之间的中间人 ,其发展日益面临着严峻的挑战。首先是顾客要求日益挑剔 ;其次是市场竞争日益剧烈 ;第三是变化日益频繁与迅速。“在新天地中 ,顾客、竞争和变化这三者要求企业具备灵活应变的能力 ,能迅速作出反应。”然而 ,以传统分工理论作为理论基础的组织结构及其运行模式在上述背景下已显得不合时宜 ,甚至成为了旅行社发展的羁绊。根据哈默和钱皮的观点 ,应该用企业流程再造的思想来重新审视并变革旅行社的组织结构和运行模式。1　企业流程再造 :组织变革的新思想企业流程再造是 …  相似文献