using sgraph to address uncertainty in batch plants
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Using S-graph to address uncertainty in batch plants ...

2009-7-7  Using S-graph to address uncertainty in batch plants. José Miguel Laínez 1, Máté Hegyháti 2, Ferenc Friedler 2 Luis Puigjaner 1 Clean Technologies and Environmental Policy volume 12, pages 105–115 (2010)Cite this article

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Using S-graph to address uncertainty in batch plants

2014-3-11  The S-graph framework consists of a sophisticated graphtheoretic model developed to address the deterministicscheduling problem in multipurpose batch plants. S-graphwas originally designed for makespan minimization prob-lems assuming Non Intermediate Storage (NIS) policy.Later works have extended the framework so that otheroperational policies (common intermediate storage, fixedintermediate storage,

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(PDF) Using S-graph to adress uncertaintly in batch plants

Using S-graph to address uncertainty in batch plants 111. 123. suitability of equipment units are shown in the recipe fig-ures. Each unit of product A has a market price of 30 c.u,

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(PDF) Using S-graph to address uncertainty in batch plants ...

Initially, this 123 fUsing S-graph to address uncertainty in batch plants 107 approach was only applied to problems in which the different recipes that may be followed in order to obtain the objective was to minimize makespan. The problem was final products.

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Using S-graph to adress uncertaintly in batch plants

Using S-graph to address.pdf ... This work addresses the batch plants scheduling under exogenous uncertainty. The most widely utilized approach to tackle this problem is stochastic programming; however its solution results in high computational expenses. ... Using S-graph to adress uncertaintly in batch plants. "Clean Technology Environmental ...

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Scheduling Intermediate Storage Multipurpose Batch

Using this strategy, we develop a new and efficient completion time algorithm for determining very good schedules for batch plants with arbitrarily constrained shared, finite storage.

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Practical infeasibility of cross-transfer in batch plants ...

Batch production plants provide a wide range of scheduling problems. In pharmaceutical industries a batch process is usually described by a recipe, consisting of an ordering of tasks to produce ...

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Maximization of Throughput in a Multipurpose Batch Plant ...

2006-9-6  This paper presents a graph-theoretic approach for the scheduling of multipurpose batch plants with the objective to maximize economic performance indexes, such as throughput, revenue, and profit over a predefined time horizon. The approach is based on the S-graph framework, which has been previously applied in the scheduling of multipurpose batch plants for the optimization of time-based ...

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Maximization of Throughput in a Multipurpose Batch Plant ...

Four scenarios, including truly batch and semicontinuous water-using systems in both multiproduct and multipurpose batch plants, are presented to demonstrate the applicability of the proposed ...

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Risk Management in the Scheduling of Batch Plants under ...

2004-1-8  A stochastic optimization approach is presented to manage risk in the short-term scheduling of multiproduct batch plants with uncertain demand. The problem is modeled using a two-stage stochastic optimization approach accounting for the maximization of the expected profit. The model is also extended to incorporate the availability of option contracts, thus providing significant flexibility ...

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Scheduling intermediate storage multipurpose batch

Scheduling Intermediate Storage Multipurpose Batch Plants Using the S-Graph Javier Romero and Luis Puigjaner Chemical Engineering Dept., Universidad Polite`cnica de Catalunya, E-08028 Barcelona, Spain Tibor Holczinger and Ferenc Friedler Dept. of Computer Science, University of Veszpre´m, Egyetem u. 10, H-8200, Veszpre´m, Hungary A graph theoretical approach is proposed for the optimal ...

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Maximization of throughput in a multipurpose batch plant ...

Using S-graph to address uncertainty in batch plants. By Luis Puigjaner, Máté Hegyháti, and Ferenc Friedler. Practical infeasibility of cross-transfer in batch plants with complex recipes: S-graph vs MILP methods. By Ferenc Friedler. Scheduling intermediate storage multipurpose batch plants using the S-graph.

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Practical infeasibility of cross-transfer in batch plants ...

Chemical Engineering Science 64 (2009) 605 -- 610 Contents lists available at ScienceDirect Chemical Engineering Science journal homepage: w w w . e l s e v i e r . c o m / l o c a t e / c e s Practical infeasibility of cross-transfer in batch plants with complex recipes: S-graph vs MILP methods M. Hegyháti a , T. Majozi a,b , T. Holczinger a , F. Friedler a,∗ a Department of Computer ...

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Addressing Robustness in Scheduling Batch Processes with ...

2019-5-25  The uncertainty present in any process environment and related not only to variable market demand but also to operational disturbances is usually unavoidable, and therefore, poor performance may be attained with the execution of deterministic optimal schedules. In this work, the short-term scheduling problem in chemical batch processes with variable processing times is addressed with the

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Short-Term Scheduling under Uncertainty Using MILP ...

2004-2-26  The aim of this paper is to develop an integrated framework within which to address the issue of uncertainty in short-term scheduling. The idea of inference-based sensitivity analysis for MILP problems is utilized within a branch-and-bound solution framework to determine the importance of different parameters and constraints and to provide a set of alternative schedules for the range of ...

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Risk Management in the Scheduling of Batch Plants under ...

2004-1-8  A stochastic optimization approach is presented to manage risk in the short-term scheduling of multiproduct batch plants with uncertain demand. The problem is modeled using a two-stage stochastic optimization approach accounting for the maximization of the expected profit. The model is also extended to incorporate the availability of option contracts, thus providing significant flexibility ...

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[PDF] Short-Term Scheduling under Uncertainty Using

The aim of this paper is to develop an integrated framework within which to address the issue of uncertainty in short-term scheduling. The idea of inference-based sensitivity analysis for MILP problems is utilized within a branch-and-bound solution framework to determine the importance of different parameters and constraints and to provide a set of alternative schedules for the range of ...

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Modeling and Managing Uncertainty in Process Planning

2009-5-25  The purpose of this chapter is to review the main methodologies that have been developed to address the problem of uncertainty in production planning and scheduling as well as to identify the main challenges in this area. The uncertainties in process operations are first analyzed, and the different mathematical approaches that exist to describe ...

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Managing demand uncertainty in supply chain planning ...

2003-9-15  The uncertainty in the product demand is translated into the uncertainty in the logistics decisions through the second stage inventory management problem. This implies that inventory levels, supply policies, safety stock deficits and customer shortages are contingent on the first-stage, manufacturing decisions and the demands realized.

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NMR-based metabolomic analysis of plants Nature

2010-2-25  Metabolomic analysis in plants by NMR spectroscopy. In the past decade, metabolomics has been developed as an important field of plant sciences and natural products chemistry 1,2,3,4,5,6,7.The ...

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Maximization of throughput in a multipurpose batch plant ...

Using S-graph to address uncertainty in batch plants. By Luis Puigjaner, Máté Hegyháti, and Ferenc Friedler. Practical infeasibility of cross-transfer in batch plants with complex recipes: S-graph vs MILP methods. By Ferenc Friedler. Scheduling intermediate storage multipurpose batch plants using the S-graph.

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State of the Art SpringerLink

2018-10-2  Laínez JM, Hegyháti et al (2010a) Using S-graph to address uncertainty in batch plants. Clean Technol Environ Policy 12(2):105–115 CrossRef Google Scholar Laínez JM, Reklaitis GV, Puigjaner L (2010b) Linking marketing and supply chain models for

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Addressing Robustness in Scheduling Batch Processes with ...

2019-5-25  The uncertainty present in any process environment and related not only to variable market demand but also to operational disturbances is usually unavoidable, and therefore, poor performance may be attained with the execution of deterministic optimal schedules. In this work, the short-term scheduling problem in chemical batch processes with variable processing times is addressed with the

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Robust batch‐to‐batch optimization in the presence of ...

2017-1-11  Robust batch-to-batch optimization in the presence of model-plant mismatch and input uncertainty. Rubin ... The improvements in convergence to the process optimum and robustness are illustrated using a fed-batch ... on resetting your password. If you do not receive an email within 10 minutes, your email address may not be registered, and you ...

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Modeling and Managing Uncertainty in Process Planning

2009-5-25  The purpose of this chapter is to review the main methodologies that have been developed to address the problem of uncertainty in production planning and scheduling as well as to identify the main challenges in this area. The uncertainties in process operations are first analyzed, and the different mathematical approaches that exist to describe ...

Get Price

Managing demand uncertainty in supply chain planning ...

2003-9-15  The uncertainty in the product demand is translated into the uncertainty in the logistics decisions through the second stage inventory management problem. This implies that inventory levels, supply policies, safety stock deficits and customer shortages are contingent on the first-stage, manufacturing decisions and the demands realized.

Get Price

Earthquake Hazard Uncertainties Improved Using ...

To address this uncertainty in the survival of the PBR, we follow the Hanks et al. and Baker et al. methodology and define the fragility of a PBR as the probability of toppling given a strength of ground shaking (Purvance, Anooshehpoor, et al., 2008); since the PBR remains untoppled, there is a high probability that no previous earthquake ...

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Using probabilistic estimation of expression residuals ...

2012-2-16  Categorical variables (e.g., batch number) have to be encoded as indicators, with a different binary variable for each batch, having a value of 1 if the individual was in the batch and a value of ...

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NMR-based metabolomic analysis of plants Nature

2010-2-25  Metabolomic analysis in plants by NMR spectroscopy. In the past decade, metabolomics has been developed as an important field of plant sciences and natural products chemistry 1,2,3,4,5,6,7.The ...

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Efficiently measuring a quantum device using machine ...

2019-9-26  The device. Our device is a laterally defined quantum dot fabricated by patterning Ti/Au gates over a GaAs/AlGaAs heterostructure containing a

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