Journal of research of the National Bureau of Standards (1977)最新文献_第4页

Effect of Variables on pH Measurement in Acid-Rain-Like Solutions as Determined by Ruggedness Tests. 通过坚固性测试确定的酸雨样溶液中变量对pH测量的影响。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1986-01-01 DOI: 10.6028/jres.091.004

George Marinenko, Robert C Paule, William F Koch, Melissa Knoerdel

引用次数: 7

Ruggedness Testing-Part I: Ignoring Interactions. 耐用性测试第一部分：忽略交互。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1986-01-01 DOI: 10.6028/jres.091.002

Robert C Paule, George Marinenko, Melissa Knoerdel, William F Koch

引用次数: 5

Development of a Standard Reference Material for Rainwater Analysis. 雨水分析标准参考物质的开发。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1986-01-01 DOI: 10.6028/jres.091.006

William F Koch, George Marinenko, Robert C Paule

引用次数: 13

DISCUSSION of the T. L. Lai paper, Regression Analysis of Compartmental Models. 对Lai T. L.论文“区隔模型的回归分析”的讨论。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.056

T-H Peng

引用次数: 0

DISCUSSION of the Lane-O'Dea-Osteryoung paper, Statistical Properties of a Procedure for Analyzing Pulse Voltammetric Data. 对Lane-O'Dea-Osteryoung论文《脉冲伏安数据分析程序的统计性质》的讨论。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.036

Janet Osteryoung

引用次数: 0

DISCUSSION of the H.C. Smit paper, The Use of Kalman Filtering and Correlation Techniques in Analytical Calibration Procedures. 讨论H.C. Smit论文，卡尔曼滤波和相关技术在分析校准程序中的应用。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.040

Diane Lambert

引用次数: 0

Intelligent Instrumentation. 智能仪表。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.041

Alice M Harper, Shirley A Liebman

{"title":"Intelligent Instrumentation.","authors":"Alice M Harper, Shirley A Liebman","doi":"10.6028/jres.090.041","DOIUrl":"https://doi.org/10.6028/jres.090.041","url":null,"abstract":"Feasibility studies on the application of multivariate statistical and mathematical algorithms to chemical problems have proliferated over the past 15 years. In contrast to this, most commercially available computerized analytical instruments have used in the data systems only those algorithms which acquire, display, or massage raw data. These techniques would fall into the \"preprocessing stage\" of sophisticated data analysis studies. An exception to this is, of course, are the efforts of instrumental manufacturers in the area of spectral library search. Recent firsthand experiences with several groups designing instruments and analytical procedures for which rudimentary statistical techniques were inadequate have focused efforts on the question of multivariate data systems for instrumentation. That a sophisticated and versatile mathematical data system must also be intelligent (not just a number cruncher) is an overriding consideration in our current development. For example, consider a system set up to perform pattern recognition. Either all users need to understand the interaction of data structures with algorithm type and assumptions or the data system must possess such an understanding. It would seem, in such cases, that the algorithm driver should include an expert systems specifically geared to mimic a chemometrician as well as one to aid interpretation in terms of the chemistry of a result. Three areas of modem analysts will be discussed: 1) developments in the area of preprocessing and pattern recognition systems for pyrolysis gas chromatography and pyrolysis mass spectrometry; 2) methods projected for the cross interpretation of several analysis techniques such as several spectroscopies on single samples; and 3) the advantages of having well defined chemical problems for expert systems/pattern recognition automation.","PeriodicalId":93321,"journal":{"name":"Journal of research of the National Bureau of Standards (1977)","volume":"90 6","pages":"453-464"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644969/pdf/jres-90-453.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39451294","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: 27

Polymers and Random Walks-Renormalization Group Description and Comparison With Experiment. 聚合物与随机游动-重整化群描述及与实验的比较。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.050

Karl F Freed

{"title":"Polymers and Random Walks-Renormalization Group Description and Comparison With Experiment.","authors":"Karl F Freed","doi":"10.6028/jres.090.050","DOIUrl":"https://doi.org/10.6028/jres.090.050","url":null,"abstract":"Although real polymers involve the sequential addition of monomers having fixed bond lengths, fixed bond angles and some freedom of rotation about single bond, the properties of polymers aver large length scales can be modeled by treating the polymer configuration as that of a random walk formed by the monomer units. Serious complications arise in the theoretical description of these polymers because of excluded volume constraints which prohibit different monomers from occupying the same position in space. This polymer excluded volume problem has been modeled in terms of a simple continuous random walk with short range repulsive interactions. The expansion of polymer properties in this repulsive interaction can readily be shown by dimensional analysis to involve an expansion in a large parameter, in the limit of long polymers. The renormalization group method is utilized as a systematic means for resuming this divergent perturbation expansion. The theory proceeds by analytically continuing the treatment to continuous range of spatial dimensionalities to expose and regularize the singularities in the analytically continued theory. The renormalization group approach is described from a heuristic physical standpoint and extensive comparisons are provided to show how it quantitatively reproduces vast amounts of dilute solution polymer properties with no adjustable parameters.","PeriodicalId":93321,"journal":{"name":"Journal of research of the National Bureau of Standards (1977)","volume":"90 6","pages":"503-506"},"PeriodicalIF":0.0,"publicationDate":"1985-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6644974/pdf/jres-90-503.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39450162","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

DISCUSSION of the Perone-Ham paper, Measurement and Control of Information Content in Electrochemical Experiments. Perone-Ham论文《电化学实验中信息量的测量与控制》的探讨。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.058

Herman Chernoff

引用次数: 0

Fitting First Order Kinetic Models Quickly and Easily. 快速，轻松地拟合一阶动力学模型。

Journal of research of the National Bureau of Standards (1977) Pub Date : 1985-11-01 DOI: 10.6028/jres.090.037

Douglas M Bates, Donald G Watts

引用次数: 1