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pyMCR: A Python Library for MultivariateCurve Resolution Analysis with Alternating Regression (MCR-AR). 使用交替回归(MCR-AR)进行多变量曲线分辨率分析的Python库。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-06-24 eCollection Date: 2019-01-01 DOI: 10.6028/jres.124.018
Charles H Camp
{"title":"pyMCR: A Python Library for MultivariateCurve Resolution Analysis with Alternating Regression (MCR-AR).","authors":"Charles H Camp","doi":"10.6028/jres.124.018","DOIUrl":"https://doi.org/10.6028/jres.124.018","url":null,"abstract":"","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 ","pages":"1-10"},"PeriodicalIF":1.5,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.6028/jres.124.018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39814333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Detailed Derivations of Formulae for Heat Release Rate Calculations Revisited: A Pedagogical and Systematic Approach 热释放率计算公式的详细推导:一个教学和系统的方法
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-06-24 DOI: 10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.016
Jiann-Cherng Yang
{"title":"Detailed Derivations of Formulae for Heat Release Rate Calculations Revisited: A Pedagogical and Systematic Approach","authors":"Jiann-Cherng Yang","doi":"10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.016","DOIUrl":"https://doi.org/10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.016","url":null,"abstract":"The derivations of the formulas for heat release rate calculations are revisited based on the oxygen consumption principle. A systematic, structured, and pedagogical approach to formulate the problem and derive the generalized formulas with fewer assumptions is used. The operation of oxygen consumption calorimetry is treated as a chemical flow process, the problem is formulated in matrix notation, and the associated material balances using the tie component concept commonly used in chemical engineering practices are solved. The derivation procedure described is intuitive and easy to follow. Inclusion of other chemical species in the measurements and calculations can be easily implemented using the generalized framework developed here.","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41589617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
pyMCR: A Python Library for MultivariateCurve Resolution Analysis with Alternating Regression (MCR-AR). 使用交替回归(MCR-AR)进行多变量曲线分辨率分析的Python库。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-06-24 DOI: 10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.018
C. Camp
{"title":"pyMCR: A Python Library for MultivariateCurve Resolution Analysis with Alternating Regression (MCR-AR).","authors":"C. Camp","doi":"10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.018","DOIUrl":"https://doi.org/10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.018","url":null,"abstract":"pyMCR is a new open-source software library for performing multivariate curve\u0000 resolution (MCR) analysis with an alternating regression scheme (MCR-AR). MCR is a\u0000 chemometric method for elucidating measurement signatures of analytes and their relative\u0000 abundance from a series of mixture measurements, without any knowledge of these values a\u0000 priori. This software library, written in Python, enables users to perform MCR analysis\u0000 with their choice of error functions for minimization, constraints, and regressors.\u0000 Further, users can apply different constraints and regressors for signature and\u0000 abundance calculations. Finally, this library enables users to develop their own\u0000 constraints, regressors, and error functions or import them from existing\u0000 libraries.","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 1","pages":"1-10"},"PeriodicalIF":1.5,"publicationDate":"2019-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45633810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 34
pyLLE: A Fast and User Friendly Lugiato-Lefever Equation Solver. pyLLE：快速、用户友好的卢加托-勒夫方程求解器
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-24 eCollection Date: 2019-01-01 DOI: 10.6028/jres.124.012
Gregory Moille, Qing Li, Xiyuan Lu, Kartik Srinivasan
{"title":"pyLLE: A Fast and User Friendly Lugiato-Lefever Equation Solver.","authors":"Gregory Moille, Qing Li, Xiyuan Lu, Kartik Srinivasan","doi":"10.6028/jres.124.012","DOIUrl":"10.6028/jres.124.012","url":null,"abstract":"","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 ","pages":"1-13"},"PeriodicalIF":1.5,"publicationDate":"2019-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8325515/pdf/jres-124-012.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39814340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Scatter Corrections in X-Ray Computed Tomography: A Physics-Based Analysis. X射线计算机断层摄影中的散射校正：基于物理学的分析。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-22 DOI: 10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.013
Z. Levine, Timothy Blattner, A. Peskin, A. Pintar
{"title":"Scatter Corrections in X-Ray Computed Tomography: A Physics-Based Analysis.","authors":"Z. Levine, Timothy Blattner, A. Peskin, A. Pintar","doi":"10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.013","DOIUrl":"https://doi.org/10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.013","url":null,"abstract":"Fundamental limits for the calculation of scattering corrections within X-ray computed tomography (CT) are found within the independent atom approximation from an analysis of the cross sections, CT geometry, and the Nyquist sampling theorem, suggesting large reductions in computational time compared to existing methods. By modifying the scatter by less than 1 %, it is possible to treat some of the elastic scattering in the forward direction as inelastic to achieve a smoother elastic scattering distribution. We present an analysis showing that the number of samples required for the smoother distribution can be greatly reduced. We show that fixed forced detection can be used with many fewer points for inelastic scattering, but that for pure elastic scattering, a standard Monte Carlo calculation is preferred. We use smoothing for both elastic and inelastic scattering because the intrinsic angular resolution is much poorer than can be achieved for projective tomography. Representative numerical examples are given.","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 1","pages":"1-23"},"PeriodicalIF":1.5,"publicationDate":"2019-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45570155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 10
Scatter Corrections in X-Ray Computed Tomography: A Physics-Based Analysis. x射线计算机断层扫描中的散射校正:基于物理的分析。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-22 eCollection Date: 2019-01-01 DOI: 10.6028/jres.124.013
Zachary H Levine, Timothy J Blattner, Adele P Peskin, Adam L Pintar
{"title":"Scatter Corrections in X-Ray Computed Tomography: A Physics-Based Analysis.","authors":"Zachary H Levine,&nbsp;Timothy J Blattner,&nbsp;Adele P Peskin,&nbsp;Adam L Pintar","doi":"10.6028/jres.124.013","DOIUrl":"https://doi.org/10.6028/jres.124.013","url":null,"abstract":"<p><p>Fundamental limits for the calculation of scattering corrections within X-ray computed tomography (CT) are found within the independent atom approximation from an analysis of the cross sections, CT geometry, and the Nyquist sampling theorem, suggesting large reductions in computational time compared to existing methods. By modifying the scatter by less than 1 %, it is possible to treat some of the elastic scattering in the forward direction as inelastic to achieve a smoother elastic scattering distribution. We present an analysis showing that the number of samples required for the smoother distribution can be greatly reduced. We show that fixed forced detection can be used with many fewer points for inelastic scattering, but that for pure elastic scattering, a standard Monte Carlo calculation is preferred. We use smoothing for both elastic and inelastic scattering because the intrinsic angular resolution is much poorer than can be achieved for projective tomography. Representative numerical examples are given.</p>","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 ","pages":"1-23"},"PeriodicalIF":1.5,"publicationDate":"2019-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.6028/jres.124.013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39955057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Comparison of Models for Heat Transfer in High-Density Fibrous Insulation. 高密度纤维绝热材料传热模型的比较。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-13 DOI: 10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.010
S. Carvajal, E. Garboczi, R. Zarr
{"title":"Comparison of Models for Heat Transfer in High-Density Fibrous Insulation.","authors":"S. Carvajal, E. Garboczi, R. Zarr","doi":"10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.010","DOIUrl":"https://doi.org/10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.010","url":null,"abstract":"This study evaluated different models for calculating the effective thermal conductivity of fibrous insulation by comparing predicted values with certified values of Standard Reference Material 1450c, Fibrous Glass Board. This comparison involved the coupled effects of radiation and conduction heat transfer. To support these comparisons, the fiber diameter distribution was measured using X-ray computed tomography, and this distribution was used in several heat transfer models considered in this paper. For the evaluation of the radiative heat transfer, the diffusion approximation, the Schuster-Schwarzschild approximation, and the Milne-Eddington approximation were considered. The conduction of the gas and the fibers was treated by the kinetic theory and a semi-empirical model, respectively. Two models were considered for the evaluation of the radiative properties: the large specular reflecting approach and the application of Mie theory for media composed of infinite cylinders.","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 1","pages":"1-21"},"PeriodicalIF":1.5,"publicationDate":"2019-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46415869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Comparison of Models for Heat Transfer in High-Density Fibrous Insulation. 高密度纤维绝热材料传热模型的比较。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-13 eCollection Date: 2019-01-01 DOI: 10.6028/jres.124.010
Sergio A Carvajal, Edward J Garboczi, Robert R Zarr
{"title":"Comparison of Models for Heat Transfer in High-Density Fibrous Insulation.","authors":"Sergio A Carvajal,&nbsp;Edward J Garboczi,&nbsp;Robert R Zarr","doi":"10.6028/jres.124.010","DOIUrl":"https://doi.org/10.6028/jres.124.010","url":null,"abstract":"<p><p>This study evaluated different models for calculating the effective thermal conductivity of fibrous insulation by comparing predicted values with certified values of Standard Reference Material 1450c, Fibrous Glass Board. This comparison involved the coupled effects of radiation and conduction heat transfer. To support these comparisons, the fiber diameter distribution was measured using X-ray computed tomography, and this distribution was used in several heat transfer models considered in this paper. For the evaluation of the radiative heat transfer, the diffusion approximation, the Schuster-Schwarzschild approximation, and the Milne-Eddington approximation were considered. The conduction of the gas and the fibers was treated by the kinetic theory and a semi-empirical model, respectively. Two models were considered for the evaluation of the radiative properties: the large specular reflecting approach and the application of Mie theory for media composed of infinite cylinders.</p>","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 ","pages":"1-21"},"PeriodicalIF":1.5,"publicationDate":"2019-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.6028/jres.124.010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39702549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Reference Schema for the Unit Manufacturing Process Information Model. 单元制造过程信息模型的参考模式。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-07 eCollection Date: 2019-01-01 DOI: 10.6028/jres.124.011
William Z Bernstein, David Lechevalier
{"title":"A Reference Schema for the Unit Manufacturing Process Information Model.","authors":"William Z Bernstein,&nbsp;David Lechevalier","doi":"10.6028/jres.124.011","DOIUrl":"https://doi.org/10.6028/jres.124.011","url":null,"abstract":"","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":"124 ","pages":"1-7"},"PeriodicalIF":1.5,"publicationDate":"2019-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.6028/jres.124.011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39814335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Reference Schema for the Unit Manufacturing Process Information Model. 单元制造过程信息模型的参考模式。
IF 1.5 4区 工程技术
Journal of Research of the National Institute of Standards and Technology Pub Date : 2019-05-07 DOI: 10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.011
W. Bernstein, D. Lechevalier
{"title":"A Reference Schema for the Unit Manufacturing Process Information Model.","authors":"W. Bernstein, D. Lechevalier","doi":"10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.011","DOIUrl":"https://doi.org/10.1002/HTTPS://DOI.ORG/10.6028/JRES.124.011","url":null,"abstract":"This document presents supporting documentation for a reference implementation\u0000 of the UnitManufacturing Process (UMP) information model presented in ASTM E3012,\u0000 Standard Guide for Characterizing Environmental Aspects of Manufacturing Processes.\u0000 A version of this schema is used inthe UMP Builder, a web-based toolkit for\u0000 recording and storing UMP models.","PeriodicalId":54766,"journal":{"name":"Journal of Research of the National Institute of Standards and Technology","volume":" ","pages":"1-7"},"PeriodicalIF":1.5,"publicationDate":"2019-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49485401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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