International Journal of Metrology and Quality Engineering最新文献_第9页

Assessing interlaboratory comparison data adjustment procedures 评估实验室间比较数据调整程序

International Journal of Metrology and Quality Engineering Pub Date : 2019-03-01 DOI: 10.1051/IJMQE/2019003

K. Jagan, A. Forbes

{"title":"Assessing interlaboratory comparison data adjustment procedures","authors":"K. Jagan, A. Forbes","doi":"10.1051/IJMQE/2019003","DOIUrl":"https://doi.org/10.1051/IJMQE/2019003","url":null,"abstract":"Interlaboratory comparisons (ILCs) are one of the key activities in metrology. Estimates x = (x1,…, xn) T of a measurand α along with their associated standard uncertainties u0 = (u0,1,…, u0,n) T, u0,j = u0 (xj) are provided by each of n laboratories. Employing a model of the form\u0000xj ∈ N(α, v0,j), j = 1,…,n,\u0000\u0000v0,j = u0,j2, we may wish to find a consensus value for α. A χ2 test can be used to assess the degree to which the spread of the estimates x are consistent with the stated uncertainties u0. If they are judged to be inconsistent, then an adjustment procedure can be applied to determine vj ≥ v0,j, so that x and v represent consistency. The underlying assumption behind this approach is that some or all of the laboratories have underestimated or neglected some uncertainty contributions, sometimes referred to as ‘dark uncertainty’, and the adjusted v provides an estimate of this dark uncertainty derived from the complete set of laboratory results. There are many such adjustment procedures, including the Birge and Mandel–Paule (M-P) procedures.\u0000In implementing an adjustment procedure, a desirable objective is to make as minimal an adjustment as necessary in order to bring about the required degree of consistency. In this paper, we discuss the use of relative entropy, also known as the Kullback–Leibler divergence, as a measure of the degree of adjustment. We consider parameterising v = v (b) as a function of parameters b with the input v0 = v (b0) for some b0. We look to perturb b from b0 to bring about consistency in a way that minimises how far b is from b0 in terms of the relative entropy or Kullback–Leibler divergence.","PeriodicalId":38371,"journal":{"name":"International Journal of Metrology and Quality Engineering","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1051/IJMQE/2019003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45161962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Development of a Multi-Hazard Landscape for Exposure and Risk Interpretation: The PRISM Approach. 开发用于暴露和风险解释的多重灾害景观：PRISM 方法。

International Journal of Metrology and Quality Engineering Pub Date : 2019-02-04 DOI: 10.2174/2212717806666190204103455

Kyle D Buck, J Kevin Summers, Stephen Hafner, Lisa M Smith, Linda C Harwell

{"title":"Development of a Multi-Hazard Landscape for Exposure and Risk Interpretation: The PRISM Approach.","authors":"Kyle D Buck, J Kevin Summers, Stephen Hafner, Lisa M Smith, Linda C Harwell","doi":"10.2174/2212717806666190204103455","DOIUrl":"10.2174/2212717806666190204103455","url":null,"abstract":"<p><p>Multi-hazard risk assessment has long been centered on small scale needs, whereby a single community or group of communities' exposures are assessed to determine potential mitigation strategies. While this approach has advanced the understanding of hazard interactions, it is limiting on larger scales or when significantly different hazard types are present. In order to address some of these issues, an approach is developed where multiple hazards coalesce with losses into an index representing the risk landscape. Exposures are assessed as a proportion of land-area, allowing for multiple hazards to be combined in a single calculation. Risk calculations are weighted by land-use types (built, dual-benefit, natural) in each county. This allows for a more detailed analysis of land impacts and removes some of the bias introduced by monetary losses in heavily urbanized counties. The results of the quantitative analysis show a landscape where the risk to natural systems is high and the western United States is exposed to a bulk of the risk. Land-use and temporal profiles exemplify a dynamic risk-scape. The calculation of risk is meant to inform community decisions based on the unique set of hazards in that area over time.</p>","PeriodicalId":38371,"journal":{"name":"International Journal of Metrology and Quality Engineering","volume":"1 1","pages":"74-94"},"PeriodicalIF":0.0,"publicationDate":"2019-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152088/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79895412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data comparisons and uncertainty: a roadmap for gaining in competence and improving the reliability of results 数据比较和不确定性:获得能力和提高结果可靠性的路线图

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/IJMQE/2018016

A. Charki, F. Pavese

引用次数: 7

Quality assurance in planning a radon measurement survey using PDCA cycle approach: what improvements? 使用PDCA循环方法规划氡测量调查的质量保证:有哪些改进?

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/IJMQE/2019004

G. La Verde, V. Roca, M. Pugliese

引用次数: 6

Comparison of applicable adjustment procedures for very small batches 小批量适用调整程序的比较

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/IJMQE/2019001

D. Duret, A. Sergent

引用次数: 0

Supercapacitor based PV measurement technique − quality assessment with poly-Si PV modules at IIEST, Kolkata 基于超级电容器的光伏测量技术-加尔各答iest多晶硅光伏模块的质量评估

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/ijmqe/2019007

S. Basu Pal, Rahul Kumar, K. Das Bhattacharya, D. Mukherjee, D. Paul

{"title":"Supercapacitor based PV measurement technique − quality assessment with poly-Si PV modules at IIEST, Kolkata","authors":"S. Basu Pal, Rahul Kumar, K. Das Bhattacharya, D. Mukherjee, D. Paul","doi":"10.1051/ijmqe/2019007","DOIUrl":"https://doi.org/10.1051/ijmqe/2019007","url":null,"abstract":"Supercapacitors have been used for the first time as load to PV cell/modules for characterizing their behavior. In this paper, a novel and essentially simple design of a V–I plotter is attempted with a bank of super capacitors (SC) as the load to the PV modules of varying capacities. The distinct advantages of the SC's over the erstwhile capacitors have been comparatively experimented. Finally, an elaborate regression analysis (RA) of principal electrical parameters have yielded consistently high values exceeding 0.993 experimental evaluation of quality parameters like fill-factor (FF) and performance ratio (PR) have yielded a range of 70–79% while PR values frequently ranges from 90% to 99%. Suitability of poly-Si PV modules at the level of PV panel configurations have been ascertained through experimental estimate of series and parallel relative power loss (RPL) values. Typical values below 2% obtained for widely varying climatic level is also a quality indicator for the new metrology in question. Such a prototype I–V plotter is expected to be duly considered for commercial testing applications in PV industries.","PeriodicalId":38371,"journal":{"name":"International Journal of Metrology and Quality Engineering","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1051/ijmqe/2019007","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57886062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

A brief history of metrology: past, present, and future 计量简史:过去、现在和未来

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/IJMQE/2019005

J. Fanton

引用次数: 11

Optimizing the transportation route of fresh food in cold chain logistics by improved genetic algorithms 基于改进遗传算法的生鲜冷链物流运输路径优化

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/ijmqe/2019013

Jing Peng

{"title":"Optimizing the transportation route of fresh food in cold chain logistics by improved genetic algorithms","authors":"Jing Peng","doi":"10.1051/ijmqe/2019013","DOIUrl":"https://doi.org/10.1051/ijmqe/2019013","url":null,"abstract":"At present, fresh food logistics transportation in China is still in the primary stage of development, transportation costs are rising, and cold chain logistics path design is unreasonable. Therefore, the optimization and prediction of the cold chain transportation route of fresh food has become the focus of the research in this field. Based on the principle of genetic algorithm, this paper designs an improved genetic algorithm to solve the problem of urban cold chain transportation path. In order to optimize the distribution path and minimize the total cost, a cold chain transport model is established. Through the simulation coding and calculation of the model, the influence of genetic algorithm on the optimization of the cold chain transport path is explored to reduce the cost and price of cold chain logistics transport, improve the transport efficiency, and thus improve the economic benefits of enterprises in this field. Through experiments, the optimal solution of the example is obtained, and compared with the traditional algorithm, it is proved that all the paths obtained by the improved genetic algorithm conform to the model with capacity constraint and time window constraint, and there is an optimal path for the most energy saving. In conclusion, the transport path of cold chain logistics calculated by the improved genetic algorithm is more optimized than the traditional algorithm and greatly improves the transport efficiency.","PeriodicalId":38371,"journal":{"name":"International Journal of Metrology and Quality Engineering","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1051/ijmqe/2019013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"57886074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Modelling of thermal effects in a slim tin fixed-point cell 薄型锡定点电池的热效应模拟

International Journal of Metrology and Quality Engineering Pub Date : 2019-01-01 DOI: 10.1051/ijmqe/2019017

S. Carvajal, J. Ramírez, A. J. Bohórquez, C. A. Sánchez

引用次数: 1

An overview of Quality Management System implementation in a research laboratory 质量管理体系在某研究实验室实施的概述

International Journal of Metrology and Quality Engineering Pub Date : 2018-11-01 DOI: 10.1051/IJMQE/2017025

V. Molinéro-Demilly, A. Charki, C. Jeoffrion, B. Lyonnet, Steve O'Brien, Luc Martin

引用次数: 8