课程文献中心 更多>>

关键词： Computer Software  

摘要： SAMPLID is a PC-based, FORTRAN-77 code which generates unique numbers for identification of samples, selection of QA/QC samples, and generation of labels. These procedures are tedious, but using a computer code such as SAMPLID can increase efficiency and reduce or eliminate errors and bias. The algorithm, used in SAMPLID, for generation of pseudorandom numbers is free of statistical flaws present in commonly available algorithms.

关键词： IDENTIFICATION   REMOTE SENSING   PASSIVE TAGGING   QUARTZ CRYSTALS   CODED LABELS  

摘要： A system is presented that enables automatic remote identification of persons or goods using tagging with passive devices. A well-defined system area is interrogated by a magnetic field that is periodically switched on and off. Presence of a tagged object is detected and its identity established by measuring the natural response of the tag during the transmission silence. The tag or identifier consists of a main resonant circuit, the coil of which provides magnetic coupling, and several quartz crystals that determine its identity. High reliability and insensitivity to interference are ensured due to the high quality factors involved. The use of passive identifiers provides a robust and low-cost system that can serve in a wide range of applications.

关键词： 终端设备   TE   可视图文设备   终端设备   标识符  

标准号: ETSI ETS 300 076-1992

标准号: CEN EN 29070-1992

关键词： 终端设备   TE   可视图文设备   终端设备   标识符  

标准号: ETSI PRETS 300 076 RV 1-1992

摘要： The theory of semantic types in Keenan and Faltz (I985) is insufficiently constrained in the sense that it requires denumerable categories to be interpreted under certain conditions via nondenumerable algebras. An ontologically more austere version of the theory is proposed in which expressions are always interpreted in terms of finite algebras and it is shown how it is nonetheless possible to treat an infinite language by providing an inductively defined hierarchy of such algebras, each representing a stage of an expanding knowledge base. Some apparent obstacles are considered and disposed of and some advantages discussed, having to do with the alethic modalities and referential opacity induced by predicates of propositional attitude. Finally, it is shown that a weaker version of Keenan and Faltz's central mathematical result, the Justification Theorem, suffices for the revised system and a simple, intuitive proof for it is given. © 1992 N.I.S. Foundation (1992).

摘要： The premonitory symptoms of an asthma attack, or prodromal syndrome, are often neglected. Their various characteristics were studied in 88 children aged between 4 and 14, at the time of an out-patient visit or admission to an institution for asthmatic children, and considering the previous year on a retrospective basis. Thirty four children had prodromal syndromes. These were essentially respiratory in 55% of them (rhinorrhea, sneezing, dry cough), while there were behavioural problems in 18 % of them (irritability, anxiety, apathy). Sixty five per cent of prodromal syndromes began more than 12 hours before the attack. There was a certain correlation between the type and the latent period of onset. Behavioural disturbances began earliest, while cough or respiratory difficulties on effort appeared only a few hours before the attack. Several prodromal syndromes were often present in association. Eighty five per cent of children regularly had prodromal syndromes of the same type before each attack. The value of recognizing these prodromal syndromes would in particular to be able to attenuate or even stop the impending asthma attack, by early bronchodilator treatment. Closely monitored children (those staying in a special institution) and with prodromal syndromes, i.e. 23 children, were thus followed up prespectively for 3 months. The onset of the asthma attacks were evaluated. Five children had prodromal syndromes with a total of 8 manifestations. Seven times out of 8, these were associated with a fall in peak flow. A moderate asthma attack occurred 5 times out of 8. It would appear that recognition and the starting of early treatment can attenuate or even stop asthma attacks which are announced by prodromal syndromes.

关键词： 标记   代码表示   正文   原稿准备   控制字符   数据处理   数据处理   字符集   标识符   活版印刷   出版   计算机应用  

标准号: BS 7402-1991

摘要： For preparing text for typesetting by means of word processors and other text preparation equipment. Describes a means of specifying character sets, how to specify markup tabs and gives details of a set of markup tags.

关键词： 访问   地址(数据处理)   数据处理   数据记录   定义   定义(术语)   文献工作   文件   编码   识别   索引语言   信息交流   信息交换   信息处理   信息技术   标记   自身的   规程   注册   SGML 语言   文件交换  

标准号: BS EN 29070-1991

关键词： 数据传送   出版   标记   数据处理   信息交流   名称与符号   正文(文献)   句法   文献   识别方法  

标准号: BS ISO/IEC 9070-1991