Výsledky vyhledávání - "Eric N.M. van Sprang"

Multivariate data analysis on historical IPV production data for better process understanding and future improvements

Autor: Wilfried A.M. Bakker, Leo A. van der Pol, Yvonne E. Thomassen, Eric N.M. van Sprang

Publikováno v: Biotechnology and Bioengineering. 107:96-104

Historical manufacturing data can potentially harbor a wealth of information for process optimization and enhancement of efficiency and robustness. To extract useful data multivariate data analysis (MVDA) using projection methods is often applied. In

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5dddfee8eb0b28e775caa98a9f9e4822
https://doi.org/10.1002/bit.22788

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The effect of the size of the training set and number of principal components on the false alarm rate in statistical process monitoring

Autor: Johan A. Westerhuis, Eric N.M. van Sprang, Henk-Jan Ramaker, Age K. Smilde

Publikováno v: Chemometrics and Intelligent Laboratory Systems, 73, 181-187. Elsevier B.V
CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS, 73(2), 181-187. Elsevier

This paper describes the sensitivity of false alarm rate to misspecification of the number of PCA components in multivariate statistical process control (MSPC) models. Using simulations, it is shown that choosing an incorrect number of components in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::41697f2872240670aafdb147fb8cee02
https://hdl.handle.net/11245/1.228049

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Pocket-size near-infrared spectrometer for narcotic materials identification

Autor: Menno Dreischor, Marc K. von Gunten, Chang Hsiung, Eric N.M. van Sprang, Nada A. O'Brien, Donald M. Friedrich, Henk-Jan Ramaker, Christopher G. Pederson

Publikováno v: SPIE Proceedings.

While significant progress has been made towards the miniaturization of Raman, mid-infrared (IR), and near-infrared (NIR) spectrometers for homeland security and law enforcement applications, there remains continued interest in pushing the technology

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::69d685c6c3a3cff87e57fc7dbd49cc74
https://doi.org/10.1117/12.2050019

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Batch process monitoring using on-line MIR spectroscopy

Autor: Hans F. M. Boelens, David Baines, Ian Weaver, Johan A. Westerhuis, Henk-Jan Ramaker, David Whiteman, Eric N.M. van Sprang

Publikováno v: Analyst, 128, 98-102. Royal Society of Chemistry

Many high quality products are produced in a batch wise manner. One of the characteristics of a batch process is the recipe driven nature. By repeating the recipe in an identical manner a desired end-product is obtained. However, in spite of repeatin

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6bea0051912db765345096d5059875da
https://pubmed.ncbi.nlm.nih.gov/12572811

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Dynamic time warping of spectroscopic BATCH data

Autor: Johan A. Westerhuis, Age K. Smilde, Eric N.M. van Sprang, Henk-Jan Ramaker

Publikováno v: Analytica chimica acta, 498(1-2), 133-153. Elsevier
Analytica Chimica Acta, 498, 133-153. Elsevier
Analytica Chimica Acta, 498, 133-153

This paper discusses a method for warping spectral batch data. This method is a modification of a procedure proposed by Kassidas et al. [AlChE Journal 44 (1998) 864; Journal of Process Control 8 (1998) 381]. This iterative procedure is based on the d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::823de05eecd82c330bf80a29f289ce32
https://pure.amc.nl/en/publications/dynamic-time-warping-of-spectroscopic-batch-data(01c6fcba-0b08-4d98-a4fa-df019dc46ac1).html

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NIR spectroscopic monitoring of a series of industrial batch processes using a bilinear grey model

Autor: Age K. Smilde, Stephen P. Gurden, Henk-Jan Ramaker, Johan A. Westerhuis, Dietrich Wienke, Eric N.M. van Sprang

Publikováno v: Applied Spectroscopy, 57, 1007-1019. Society for Applied Spectroscopy
Applied spectroscopy, 57(8), 1007-1019. Society for Applied Spectroscopy

A good process understanding is the foundation for process optimization, process monitoring, end-point detection, and estimation of the end-product quality. Performing good process measurements and the construction of process models will contribute t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77849ed98b26543c6c7cc9d977a57305
https://dare.uva.nl/personal/pure/en/publications/nir-spectroscopic-monitoring-of-a-series-of-industrial-batch-processes-using-a-bilinear-grey-model(ee101572-2ea9-43d6-a630-1136dbc1e497).html

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Critical Evaluation of Approaches for On-line Batch Processs Monitoring

Autor: Age K. Smilde, Eric N.M. van Sprang, Johan A. Westerhuis, Henk-Jan Ramaker, Stephen P. Gurden

Publikováno v: Chemical Engineering Science, 57(18), 3979-3992. Elsevier
CHEMICAL ENGINEERING SCIENCE, 57(18), 3979-3991. Elsevier BV

Since the introduction of batch process monitoring using component models in 1992, different approaches for statistical batch process monitoring have been suggested in the literature. This is the first evaluation of five proposed approaches so far. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::208bea15c3aa66c4542fc11f13c16d3d
https://dare.uva.nl/personal/pure/en/publications/critical-evaluation-of-approaches-for-online-batch-processs-monitoring(d4427822-8c6e-4816-af68-3f450e14caf2).html

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Erratum to 'Dynamic time warping of spectroscopic BATCH data' [Anal. Chim. Acta 498 (2003) 133–153]

Autor: Age K. Smilde, Henk-Jan Ramaker, Johan A. Westerhuis, Hans F. M. Boelens, Eric N.M. van Sprang

Publikováno v: Analytica Chimica Acta. 526:111

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8031246907eda5367aa33ace3d5ffea6
https://doi.org/10.1016/j.aca.2004.09.001

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