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161.
Paola Fisicaro Soraya Amarouche Béatrice Lalere Guillaume Labarraque Marc Priel 《Accreditation and quality assurance》2008,13(7):361-366
Since the advent of the Guide to the Expression of Uncertainty in Measurement (GUM) founding the principles of uncertainty
evaluation, numerous projects have been carried out to develop alternative practical methods when it is impossible to model
technical or economical aspects of the measurement process. These methods can use all the experimental data available to the
laboratories, such as repeatability, reproducibility, quality-control charts, etc. The studies presented in this paper compare
the results obtained by the modelling method from GUM with the uncertainties found by applying alternative methods. They show
two examples, one in the field of environmental monitoring, the other in the biomedical field, based on the exploitation of
PT schemes results.
Presented at BERM-11, October 2007, Tsukuba, Japan. 相似文献
162.
163.
Wider dissemination of medical digital video libraries is affected by two correlated factors, resource effective content compression
that directly influences its diagnostic credibility. It has been proved that it is possible to meet these contradictory requirements
halfway for long-lasting and low motion surgery recordings at compression ratios close to 100 (bronchoscopic procedures were
a case study investigated). As the main supporting assumption, it has been accepted that the content can be compressed as
far as clinicians are not able to sense a loss of video diagnostic fidelity (a visually lossless compression).
Different market codecs were inspected by means of the combined subjective and objective tests toward their usability in medical
video libraries. Subjective tests involved a panel of clinicians who had to classify compressed bronchoscopic video content
according to its quality under the bubble sort algorithm. For objective tests, two metrics (hybrid vector measure and hosaka
Plots) were calculated frame by frame and averaged over a whole sequence. 相似文献
164.
Georgios D. Samaras Nikolaos F. Matsatsinis Constantin Zopounidis 《European Journal of Operational Research》2008
The paper describes a multicriteria decision support system which aims at presenting an evaluation of the Athens Stock Exchange (ASE) stocks, on the basis of fundamental analysis. The system evaluates the stocks based on the method of fundamental analysis ratios, which is the most appropriate evaluation approach regarding investment decisions within a long term horizon. In addition to quantitative data deriving from fundamental analysis, the system uses qualitative data as well, in order to improve the reliability of the evaluation. The system introduced in this paper, utilises multicriteria analysis methodologies in order to rank the stocks by placing the best stock first and the worst last. Stock evaluation considers the specific characteristics of the potential investor, as well as his attitude towards undertaken risk. The final output of the system is four stock rankings which respond to four different criteria groups, depending on the type of accounting plan each listed company belongs to. The system incorporates a large volume of relevant information and operates in ‘real world conditions’ since its data are constantly updated. Finally, the system is intended for both institutional and private investors. 相似文献
165.
多元统计分析在医院管理中的应用 总被引:3,自引:0,他引:3
本文应用多元统计分析中的聚类分析和因子分析法 ,对辽宁省金秋医院内科循环病房 1997- 1999年的月报表进行了综合评价 ,借以说明多元统计分析用于医院管理的实用性与优越性 相似文献
166.
敌情威胁程度的判断是定下作战决心的基础.提出利用多级模糊综合评判的方法,首先利用层次分析法(AHP法)综合专家的判断,建立权重集,然后利用模糊综合评判理论对对战场某一指定区域的模糊敌情进行威胁程度判断,从而将两种方法的优点综合起来.并给出了一个应用该方法的海区模糊敌情判断实例,结论说明该方法可行. 相似文献
167.
灰关联模式评估模型在大学生体质健康水平综合评价中的应用 总被引:1,自引:0,他引:1
针对在大学生体质健康水平评价过程中指标权重确定、评价标准区分度等问题,讨论了单层和多层灰关联模式评估模型,并在权重的确定上采用熵权系数,以此为基础构建大学生体质健康水平综合评价体系,客观反映了大学生体质健康水平及个体间的差异. 相似文献
168.
The AME 2020 atomic mass evaluation (I). Evaluation of input data,and adjustment procedures
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This is the first of two articles(Part I and Part II)that presents the results of the new atomic mass evaluation,Ame2020.It includes complete information on the experimental input data that were used to derive the tables of recommended values which are given in Part II.This article describes the evaluation philosophy and procedures that were implemented in the selection of specific nuclear reaction,decay and mass-spectrometric data which were used in a least-squares fit adjustment in order to determine the recommended mass values and their uncertainties.All input data,including both the accepted and rejected ones,are tabulated and compared with the adjusted values obtained from the least-squares fit analysis.Differences with the previous Ame2016 evaluation are discussed and specific examples are presented for several nuclides that may be of interest to Ame users. 相似文献
169.
The creep life of aluminum conductor composite core (ACCC) utilized in high voltage electric transmission was investigated using an experimental method based on the equivalence relationship. First, the time-temperature-stress equivalence relationship was developed using the time-temperature and the time-stress equivalence relationships. Then, tensile creep experiments were conducted under different temperatures and different stress levels to obtain the strain-time curves of the ACCC. Finally, the creep strain master curve was obtained using the experimental data based on the time-temperature-stress equivalence relationship, allowing prediction of ACCC creep life. The results will play an important role in evaluation of the long-term characteristics of the ACCC for engineering applications. 相似文献
170.