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关键词： molecular detection   oligonucleotide   probes   starfish larvae   marine pest   ballast water  

摘要： A fluorescent in situ hybridisation assay has been developed to detect a high profile marine pest in ships' ballast water, namely the northern Pacific seastar, Asterias amurensis. This organism has not been detected in New Zealand waters, but is seen as a high risk to marine values, including economic resources, should it become established. The fluorescein-labelled species-specific probe construct, coded AM2F, scored positive against A. amurensis larvae. The probe was tested for cross-reactivity against larvae of the starfish Patiriella mortenseni, Coscinasterias muricata, and Sclerasterias mollis. The signal given by the probe against these species was either absent or extremely weak, indicating minimal or no cross-reactivity. The assay detects at the organism level and, because the method involves microscopy, it has potential for enumerating detected species. Additionally, by meeting several criteria for viability assessment (i.e., degree of body wall and organelle integrity as well as fluorescence), the assay can provide indicative counts of viable larvae.

关键词： DIGITAL libraries   LIBRARIES   ELECTRONIC publishing   PUBLISHERS & publishing   DIGITAL Object Identifiers   ELECTRONIC information resources   METADATA  

摘要： Digital Object Identifiers (DOIs) are persistent identifications that are assigned to any entity in order to manage intellectual content on digital networks. The DOI system has been managed by an open membership consortium, the International DOI Foundation (IDF), founded in 1998. Usage of the DOI system is cross-industry beyond academic publishing. This article provides an overview of what a DOI is;the structure of DOI;DOI registration agencies (RA);metadata associated with DOIs, and advantages for libraries.

标准号: KS X ISO/IEC 15459-2-2001

标准号: CSA ISO/IEC 21000-3-04-CAN/CSA AMD 1-2007

关键词： software quality characterizations   program analysis   source code  

摘要： Identifiers, which represent the defined concepts in a program, account for, by some measures, almost three quarters of source code. The makeup of identifiers plays a key role in how well they communicate these defined concepts. An empirical study of identifier quality based on almost 50 million lines of code, covering thirty years, four programming languages, and both open and proprietary source is presented. For the purposes of the study, identifier quality is conservatively defined as the possibility of constructing the identifier out of dictionary words or known abbreviations. Four hypotheses related to identifier quality are considered using linear mixed effect regression models. For example, the first hypothesis is that modern programs include higher quality identifiers than older ones. In this case, the results show that better programming practices are producing higher quality identifies. Results also confirm some commonly held beliefs, such as proprietary code having more acronyms than open source code.

关键词： 寻址   自动   条形码   数据采集   数据链层   数据处理   数据传输   定义   货物运输   识别   识别号   信息交换   信息技术   多用途   射频识别   再循环   可重复使用   重新使用   RFID   电信   运输链   运输单元  

标准号: BS ISO/IEC 15459-5-2007

摘要： This part of ISO/IEC 15459 specifies a unique, non-significant string of characters for the unique identification of returnable transport items (RTIs). The character string is intended to be represented in a radio frequency identification (RFID) transponder, bar code label or other automatic identification and data capture (AIDC) media attached to the item to meet supply chain management needs. To address management needs different classes of RTI are recognised in the various parts of ISO/IEC 15459, which allows different requirements to be met by the unique identifiers associated with each class. The rules for the unique identifier for RTIs, to identify the unique occurrence of an item, with the identity being relevant for the complete life cycle of the item, are defined and supported by an example.

关键词： 视听   视听的   代码   数据交换   定义   文献工作   版本   识别号   信息   信息交换   国际的   国际识别号   国际标准视听数码   ISAN   法律叙述   图书馆   图书馆学和情报学   编号   编号体系   数   数字标志   出版物   记录  

标准号: BS ISO 15706-2-2007

摘要： This part of ISO 15706 establishes a voluntary system for the identification of versions of audiovisual works and other content derived from or closely related to an audiovisual work (see Annex A). It is based on the International Standard Audiovisual Number (ISAN) system defined in ISO 15706. An ISAN combined with the version segment specified in Clause 4 of this part of ISO 15706 constitutes an ISAN version identifier, hereinafter referred to as a V-ISAN. A V-ISAN is a registered, globally unique identifier for versions of an audiovisual work and related content. A V-ISAN identifies a specific version or other content related to an audiovisual work throughout its life. It is intended for use wherever precise and unique identification of a specific version or other content related to an audiovisual work would be desirable, such as in audiovisual production and distribution systems, broadcasting applications and electronic program guides. A V-ISAN identifies a specific version or other content related to an audiovisual work as the unique compound of its component elements (e.g. its artistic content, languages, editing and technical format) throughout its life and independent of any physical form in which that version or related content is distributed. The assignment of a V-ISAN to a version or other content related to an audiovisual work does not constitute evidence of the ownership of rights to either that version or related content or to the audiovisual work itself. This part of ISO 15706 specifies the basic systems and procedures to support the issuance and administration of V-ISANs.

关键词： 水资源监控   数据库   表结构   标识符  

标准号: SL 380-2007

摘要： 本标准适用于水行政主管部门及相关单位水资源监控信息,可满足水资源监控管理数据库建设,以及相关的数据查询、信息发布和应用服务软件开发的需要。

关键词： 喷码机   高清晰   多米诺   应用   标识符   流通领域   流通过程   质量问题  

摘要： 标识作为产品的“身份证”，已成为整个生产和流通领域中必不可少的环节。随着各行业对产品外箱包装要求的逐步提高，越来越多的企业开始意识到外箱标识已不再是一种简单的产品标识符号。企业希望通过产品的外箱标识对仓储及流通过程进行有效地监控。并建立一套完整的产品追踪追溯体系。一旦售出产品出现质量问题。企业可直接利用产品标识系统。依照追踪体系的相关记录信息进行同步追踪，从而实现对产品可靠的追踪追溯。

关键词： 数字期刊   唯一标识符   DOI  

摘要： 通过对DOI标准规范的描述,对比国内外几大数字文献生产商DOI标识规范和DOI解析系统的建设情况,从信息资源建设角度论述了中文DOI标识规范和DOI解析系统建设的意义。