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Optimization of Batch and Semi-batch Reactors
2013Abstract Batch and semi-batch reactors are widely used for fine chemical productions. The target in the fine chemical industry is to produce a high quality product and operational optimization is the key-element to match it. This work investigates how batch and semibatch reactors can be optimized in order to increase the yield of a desired product ...
E. Pahija +2 more
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Multivariate monitoring of batch processes using batch‐to‐batch information
AIChE Journal, 2004AbstractMultiway principal component analysis (MPCA) and multiway partial‐least squares (MPLS) are well‐established methods for the analysis of historical data from batch processes, and for monitoring the progress of new batches. Direct measurements made on prior batches can also be incorporated into the analysis by monitoring with multiblock methods ...
Jesus Flores‐Cerrillo +1 more
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Test for batch‐to‐batch variation in stability analysis
Statistics in Medicine, 1989AbstractWe propose several statistical tests for batch‐to‐batch variation in the stability analysis of a drug product and present applications with data from new drug application stability and marketing stability analyses.
S C, Chow, J, Shao
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The look-ahead-maximize-batch batching policy
Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042), 2002This paper introduces a new batching policy, called look-ahead-maximize-batch (LAMB), for reducing the bandwidth demand of video servers. LAMB maximizes the number of users admitted in a window, which includes the reneging time of all pending requests at that scheduling time.
Nelson L. S. da Fonseca +1 more
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Industrial & Engineering Chemistry Research, 2015
In this work, we focus on the development of a parametric drift detection and isolation (PDDI) method for the handling of batch-to-batch parametric drifts in a batch crystallization process used to produce hen egg-white (HEW) lysozyme crystals. We consider that the batch crystallization process is controlled by an in-batch model predictive control (MPC)
Joseph Sang-Il Kwon +2 more
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In this work, we focus on the development of a parametric drift detection and isolation (PDDI) method for the handling of batch-to-batch parametric drifts in a batch crystallization process used to produce hen egg-white (HEW) lysozyme crystals. We consider that the batch crystallization process is controlled by an in-batch model predictive control (MPC)
Joseph Sang-Il Kwon +2 more
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Batch-to-batch model-based iterative optimisation control for a batch polymerisation reactor
Proceedings of the 2003 American Control Conference, 2003., 2004A batch-to-batch model-based iterative optimisation control strategy for a batch polymerisation reactor is proposed. Because the reference sequences for product quality variables during a batch are usually difficult to be set reasonably and the interest usually lies in the end-of-batch product quality, a modified quadratic objective function is ...
Zhihua Xiong, Jie Zhang 0005
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Batch-Destillation, Batch-Rektifikation
2016Behandlung der Auslegung von Prozessen fur die einstufige offene Batch-Destillation idealer und realer binarer Gemische. Dynamische Simulation der zeitabhangigen Batch-Destillation eines realen binaren Gemisches unter Einbeziehung der Energiebilanz auf der Basis eines rigorosen Modells, dazu Losung der aufgestellten Gleichungen durch ein vereinfachtes ...
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Dermatologic Clinics, 1990
One of the basic principles in the investigation of suspected contact dermatitis is always to test with the patient's "own" product or chemical, the one to which he or she was actually exposed. An equally basic second principle is not to rely solely on a positive test reaction.
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One of the basic principles in the investigation of suspected contact dermatitis is always to test with the patient's "own" product or chemical, the one to which he or she was actually exposed. An equally basic second principle is not to rely solely on a positive test reaction.
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Proceedings of the 2004 IEEE International Symposium on Intelligent Control, 2004., 2005
This work presents an integrated batch-to-batch control and within batch re-optimisation control strategy for batch processes using neural network models. To overcome the difficulties in developing detailed mechanistic models, neural network models are developed from process operation data.
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This work presents an integrated batch-to-batch control and within batch re-optimisation control strategy for batch processes using neural network models. To overcome the difficulties in developing detailed mechanistic models, neural network models are developed from process operation data.
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Proceedings of the 23rd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, 2017
Efficiency of large-scale learning is a hot topic in both academic and industry. The stochastic gradient descent (SGD) algorithm, and its extension mini-batch SGD, allow the model to be updated without scanning the whole data set. However, the use of approximate gradient leads to the uncertainty issue, slowing down the decreasing of objective function.
Peifeng Yin +2 more
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Efficiency of large-scale learning is a hot topic in both academic and industry. The stochastic gradient descent (SGD) algorithm, and its extension mini-batch SGD, allow the model to be updated without scanning the whole data set. However, the use of approximate gradient leads to the uncertainty issue, slowing down the decreasing of objective function.
Peifeng Yin +2 more
openaire +1 more source