Abstract The paper presents an approach to improve the product quality from batch to batch by exploiting the repetitive nature of batch processes to update the operating trajectories using process knowledge obtained from previous runs. The data-based optimization methodology is based on using the linear time varying (LTV) perturbation model in an iterative learning control (ILC) framework to pr...

A novel strategy is proposed to minimize the operation time of batch and semi-batch processes. The proposed on-line strategy is based on linear regression models and employs a cascade control structure in which the primary controller calculates an optimal operation profile for the secondary controller to follow. A special feature of the proposed on-line strategy is that it conducts runwise info...

Article history: Received 9 November 2007 Received in revised form 17 March 2008 Accepted 3 April 2008 Available online 6 April 2008

Batch verification can provide large computational savings when multiple signatures are verified together. Recently, some batch verifying signature schemes have been proposed from bilinear pairings. In this paper, we show that an attacker can cheat a verifier to accept invalid signatures in these batch verifying schemes. We also show that randomized batch verification technique can be used to a...

classes based on both: v data, and v behavior Recipe Recipe Name {I} Cooking Time Cooking Temp. Heating Rate R2 Batch Batch ID {I} Amount of Batch Recipe Name {R2} Status Temperature Ramp Ramp ID {I} Batch ID {R4} Start Temperature Start Time End Temperature End Time Status R4

We consider the problem of minimizing the total late work ( n ∑ j=1 V j) on an unbounded batch processing machine, where V j = min{Tj, p j} and Tj = max{C j−d j,0}. The batch processing machine can process up to B (B≥ n) jobs simultaneously. The jobs that are processed together form a batch, and all jobs in a batch start and complete at the same time, respectively. For a batch of jobs, the proc...

Today, the goal of many organizations is to optimize their business processes. A factor for optimization is the reduction of costs associated with mass production and customer service, e.g., by the mean of batch processing. In business process management, batch activities allow to improve the process performance by synchronizing the execution of a set of process instances. However, the issue of...

Column leaching testing can be considered a better basis for assessing field impact data than any other available batch test method and thus provides a fundamental basis from which to estimate constituent release under a variety of field conditions. However, column testing is time-intensive compared to the more simplified batch testing, and may not always be a viable option when making decision...

The cost of fermentable sugars added as a substrate is one major problem for economic lactic acid (LA) production. Old oil palm trunks (OPT) squeezed sap, the agricultural wastes on replanting and pruning (Elaeis guineensis), contained mainly glucose fructose potential feedstock to use vast carbon source LA To improve yield productivity, various fermentation modes were performed by Lactobacillu...