浅评Vista操作系统     

徐小红 《中国科技信息》2007,(15):137-137,87

伴随着微软新系统Windows vista的推出,其具体功能一点点被人发现和挖掘,缺陷也已经一点点曝光在所有用户的面前。  相似文献   

操作系统起源、分类及应用现状     

胡建 《保山师专学报》2007,26(2):22-26

首先从原理角度简述了计算机操作系统的基本功能、起源和发展演变,同时按照主流的分类标准,对各种现代操作系统(Unix,Linux,Windows等)的起源、发展、特点和应用前景进行了总结,着重介绍了目前桌面计算机系统中应用最广的MS Windows系列。  相似文献   

The importance of having a flexible scope ISO 15189 accreditation and quality specifications based on biological variation – the case of validation of the biochemistry analyzer Dimension Vista     

Pilar Fernandez-Calle  Sandra Pelaz  Paloma Oliver  Maria Jose Alcaide  Ruben Gomez-Rioja  Antonio Buno  Jose Manuel Iturzaeta 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2013,23(1):83-95

Introduction

Technological innovation requires the laboratories to ensure that modifications or incorporations of new techniques do not alter the quality of their results. In an ISO 15189 accredited laboratory, flexible scope accreditation facilitates the inclusion of these changes prior to accreditation body evaluation. A strategy to perform the validation of a biochemistry analyzer in an accredited laboratory having a flexible scope is shown.

Materials and methods:

A validation procedure including the evaluation of imprecision and bias of two Dimension Vista analysers 1500 was conducted. Comparability of patient results between one of them and the lately replaced Dimension RxL Max was evaluated. All studies followed the respective Clinical and Laboratory Standards Institute (CLSI) protocols. 30 chemistry assays were studied. Coefficients of variation, percent bias and total error were calculated for all tests and biological variation was considered as acceptance criteria. Quality control material and patient samples were used as test materials. Interchangeability of the results was established by processing forty patients’ samples in both devices.

Results:

27 of the 30 studied parameters met allowable performance criteria. Sodium, chloride and magnesium did not fulfil acceptance criteria. Evidence of interchangeability of patient results was obtained for all parameters except magnesium, NT-proBNP, cTroponin I and C-reactive protein.

Conclusions:

A laboratory having a well structured and documented validation procedure can opt to get a flexible scope of accreditation. In addition, performing these activities prior to use on patient samples may evidence technical issues which must be corrected to minimize their impact on patient results.  相似文献   

功能强大的网上信息检索工具：Alta Vista搜索引擎   总被引：1，自引：0，他引：1  

阮延生 《情报科学》2000,18(12):1141-1143

通过因特网上著名搜索引擎ＡｌｔａＶｉｓｔａ的介绍,并对其检索方法和检索特点进行了深入的分析研究。  相似文献