Building Cogeneration Planning Scheduling Systems using IBM ILOG ODME, CPLEX ...Alkis Vazacopoulos
This document discusses using IBM's ODME and iMPress software for building cogeneration planning and scheduling applications. It provides an overview of ODME, iMPress, and how they can be implemented together. Key benefits include fitting business models/processes, sophisticated optimization, quick adaptation, and scenario analysis. A proof-of-concept is proposed to select a plant type, integrate data sources, solve models, and tune models for accuracy and tractability.
Solve Production Allocation and Reconciliation Problems using the same NetworkAlkis Vazacopoulos
Production allocation is a business accounting practice used throughout the processing world to proportionately and quantitatively assign measurement error and production expenditures or overheads to internal and external business owners. Reconciliation is a scientific function to vet production data of gross errors or non-random variation if it occurs and to find more precise estimates of the measured values. The consequence of our proposed technique is to allow these two functions the capability to use the same production network or flow-path. Only one model is required to be maintained eliminating the possibility that potentially costly mis-allocation will occur due to business and engineering model-mismatch. Mis-allocation due to measurement errors can still be problematic as we illustrate in an example, but should be reduced over time because of the reconciliation measurement diagnostics.
Stock Decomposition Heuristic for Scheduling: A Priority Dispatch Rule ApproachAlkis Vazacopoulos
Highlighted in this article is a closed-shop scheduling heuristic which makes use of the traditional priority dispatch rule approach found in open-shop scheduling such as job-shop scheduling. Instead of prioritizing and scheduling one job or project (or stock-order) at a time, we schedule one stock or stock-group at a time where a stock-group is a collection of individual stocks and their one or more stock-orders. These stocks can be feed-stocks, intermediate-stocks or product-stocks of which we focus on product-stocks given that most production is demand-driven. A key feature of this heuristic is our ability to compress the production network or superstructure so that only those unit-operations necessary to produce the stocks in question are included in the model thus reducing the size of the problem considerably at each iteration of the heuristic. The stock-specific network compression technique uses what we call a unit-capacity transshipment linear program to successively determine which unit-operations are redundant when making a particular stock. This heuristic is also particularly useful for those process industries that can potentially produce many product-stocks but only a fraction of these are produced within the scheduling horizon whereby the model is significantly reduced at solve time to include only those stocks that are demanded whereby redundant unit-operations are removed. An illustrative example is provided with recycle loops (i.e., stock flow-reversals) and shared units or equipment (i.e., unit flow-reversals) that demonstrates the effectiveness and efficiency of the technique.
A Nonlinear Integrated Model for Operational Planning of Multi-Site RefineriesAlkis Vazacopoulos
The document presents a nonlinear integrated model for the operational planning of multi-site refineries. The model aims to optimize refinery operations across multiple refinery sites in a unified manner by considering the nonlinear relationships between process variables, yields, properties and operational constraints. The approach integrates operational planning with process models that can account for variations in yields and properties based on operational conditions. This provides a more accurate representation of refinery behavior compared to traditional linear programming models.
Presented in this document is a short discussion on using IMPL’s SLPQPE algorithm to solve process optimization problems in either off- or on-line environments also known as real-time optimization (RTO). Process optimization is somewhat different than production optimization in the sense that there are more “constitutive relations” involving only intensive variables. Both types of optimizations involve “conservation laws” and “correlative equations” which usually involve a mix of extensive and intensive variables (Kelly, 2004). Whereas production optimization deals more with material, meta-material (nonlinear), logic and logistics (discrete) balances (Zyngier and Kelly, 2009 and Kelly and Zyngier, 2015), process optimization is inherently more detailed and includes energy, exergy, momentum, hydraulics, equilibrium, diffusion, kinetics and other types of transport phenomena which involve nonlinear and perhaps discontinuous functions (Pantelides and Renfro, 2012).
A Regularization Approach to the Reconciliation of Constrained Data SetsAlkis Vazacopoulos
This document proposes a new regularization approach to reconcile constrained data sets. The approach assumes unmeasured variables have a finite but equal uncertainty to derive an iterative solution that does not require explicitly computing a projection matrix at each step. This avoids issues when the projection matrix is non-invertible. The method arrives at a minimized solution by reformulating the problem to include an added regularization term for the unmeasured variables. It also provides an alternative way to classify variables without using the projection matrix.
The document provides an overview of Switch Datacenters, including an agenda for a company presentation, details about the company's founding, location, and focus on the TMT sector. It describes the datacenter facilities including power capacity, security features, and carrier neutral connectivity. Services offered include colocation, connectivity, support, and managed services options. Customer references are also listed. The goal is to enable companies to securely house critical IT equipment in a sustainable environment with bespoke solutions and connectivity.
O documento explica como calcular o ano inicial de cada século no calendário gregoriano, começando com o nascimento de Jesus no ano 1 d.C. (1) Todo século tem 100 anos e começa com um ano que termina em "01"; (2) Para calcular o ano inicial, diminua 1 do número do século e acrescente "01"; (3) Exemplos incluem século I (ano 1), século XIV (ano 1301) e século XXI (ano 2001).
La globalización solo beneficia a los ricos y poderosos, no a los pobres. A pesar de años de globalización, dos tercios de la población mundial sigue siendo pobre. La globalización es una perversión económica controlada por grandes empresas que han convertido a los gobiernos en sus rehenes. La economía global ha eliminado las fronteras morales y rige la ley del más fuerte, esclavizando a los más débiles para que sobrevivan y sigan siendo explotados.
O documento é uma oração que pede a Deus para acalmar o passo da pessoa, diminuindo seu ritmo apressado através da contemplação da natureza, do sono reparador e de pequenos momentos de lazer, para que possa perceber Sua presença constante e entoar o cântico da esperança.
Este documento presenta los ambientes de aprendizaje para la educación en tecnología e informática, con un enfoque internacional. Describe las características básicas internacionales de la tecnología e informática como una disciplina transversal implementada en el currículo de manera interdisciplinaria. Explica los propósitos del área de tecnología e informática, que busca proyectar en los estudiantes una cultura ciudadana para comprender e interpretar la tecnología actual con visión crítica. También resume los aspectos evaluados, como
Modelos de la epigrafía clásica en las inscripciones hispanas de los siglos X...Manuel Ramírez Sánchez
Comunicación titulada "Modelos de la epigrafía clásica en las inscripciones hispanas de los siglos XV al XVII", presentada en el Seminario Internacional Pedres, pergamins i papers. Memòria de lèpigrafia romana de l'Antiguitat tardana al Barroco, organizado por la Universitat Autònoma de Barcelona (13-15 diciembre 2011)
Vipul Kashyap is seeking full-time opportunities in software development or machine learning. He has a Master's in Computer Science from North Carolina State University with a 4.0 GPA and a Bachelor's in Computer Engineering from University of Mumbai, India with a 71%. He has experience as an IBM Watson Software Developer Intern where he created APIs using Node.js and as a Deloitte Consulting Business Technology Analyst where he created a web application using Java, SQL, and PHP. He has strong technical skills in languages like Java, Python, C#, C++ and frameworks like Node.js, ASP.NET, and technical skills in tools like Git, SQL Server, and Visual Studio.
O documento fornece informações sobre montanhas e cordilheiras, incluindo os 14 picos mais altos do mundo com mais de 8.000 metros, liderados pelo Everest com 8.872 metros. É mencionado que uma cordilheira é um conjunto de montanhas e exemplos como o Himalaia e o Karakoram na Ásia são dados.
Building Cogeneration Planning Scheduling Systems using IBM ILOG ODME, CPLEX ...Alkis Vazacopoulos
This document discusses using IBM's ODME and iMPress software for building cogeneration planning and scheduling applications. It provides an overview of ODME, iMPress, and how they can be implemented together. Key benefits include fitting business models/processes, sophisticated optimization, quick adaptation, and scenario analysis. A proof-of-concept is proposed to select a plant type, integrate data sources, solve models, and tune models for accuracy and tractability.
Solve Production Allocation and Reconciliation Problems using the same NetworkAlkis Vazacopoulos
Production allocation is a business accounting practice used throughout the processing world to proportionately and quantitatively assign measurement error and production expenditures or overheads to internal and external business owners. Reconciliation is a scientific function to vet production data of gross errors or non-random variation if it occurs and to find more precise estimates of the measured values. The consequence of our proposed technique is to allow these two functions the capability to use the same production network or flow-path. Only one model is required to be maintained eliminating the possibility that potentially costly mis-allocation will occur due to business and engineering model-mismatch. Mis-allocation due to measurement errors can still be problematic as we illustrate in an example, but should be reduced over time because of the reconciliation measurement diagnostics.
Stock Decomposition Heuristic for Scheduling: A Priority Dispatch Rule ApproachAlkis Vazacopoulos
Highlighted in this article is a closed-shop scheduling heuristic which makes use of the traditional priority dispatch rule approach found in open-shop scheduling such as job-shop scheduling. Instead of prioritizing and scheduling one job or project (or stock-order) at a time, we schedule one stock or stock-group at a time where a stock-group is a collection of individual stocks and their one or more stock-orders. These stocks can be feed-stocks, intermediate-stocks or product-stocks of which we focus on product-stocks given that most production is demand-driven. A key feature of this heuristic is our ability to compress the production network or superstructure so that only those unit-operations necessary to produce the stocks in question are included in the model thus reducing the size of the problem considerably at each iteration of the heuristic. The stock-specific network compression technique uses what we call a unit-capacity transshipment linear program to successively determine which unit-operations are redundant when making a particular stock. This heuristic is also particularly useful for those process industries that can potentially produce many product-stocks but only a fraction of these are produced within the scheduling horizon whereby the model is significantly reduced at solve time to include only those stocks that are demanded whereby redundant unit-operations are removed. An illustrative example is provided with recycle loops (i.e., stock flow-reversals) and shared units or equipment (i.e., unit flow-reversals) that demonstrates the effectiveness and efficiency of the technique.
A Nonlinear Integrated Model for Operational Planning of Multi-Site RefineriesAlkis Vazacopoulos
The document presents a nonlinear integrated model for the operational planning of multi-site refineries. The model aims to optimize refinery operations across multiple refinery sites in a unified manner by considering the nonlinear relationships between process variables, yields, properties and operational constraints. The approach integrates operational planning with process models that can account for variations in yields and properties based on operational conditions. This provides a more accurate representation of refinery behavior compared to traditional linear programming models.
Presented in this document is a short discussion on using IMPL’s SLPQPE algorithm to solve process optimization problems in either off- or on-line environments also known as real-time optimization (RTO). Process optimization is somewhat different than production optimization in the sense that there are more “constitutive relations” involving only intensive variables. Both types of optimizations involve “conservation laws” and “correlative equations” which usually involve a mix of extensive and intensive variables (Kelly, 2004). Whereas production optimization deals more with material, meta-material (nonlinear), logic and logistics (discrete) balances (Zyngier and Kelly, 2009 and Kelly and Zyngier, 2015), process optimization is inherently more detailed and includes energy, exergy, momentum, hydraulics, equilibrium, diffusion, kinetics and other types of transport phenomena which involve nonlinear and perhaps discontinuous functions (Pantelides and Renfro, 2012).
A Regularization Approach to the Reconciliation of Constrained Data SetsAlkis Vazacopoulos
This document proposes a new regularization approach to reconcile constrained data sets. The approach assumes unmeasured variables have a finite but equal uncertainty to derive an iterative solution that does not require explicitly computing a projection matrix at each step. This avoids issues when the projection matrix is non-invertible. The method arrives at a minimized solution by reformulating the problem to include an added regularization term for the unmeasured variables. It also provides an alternative way to classify variables without using the projection matrix.
The document provides an overview of Switch Datacenters, including an agenda for a company presentation, details about the company's founding, location, and focus on the TMT sector. It describes the datacenter facilities including power capacity, security features, and carrier neutral connectivity. Services offered include colocation, connectivity, support, and managed services options. Customer references are also listed. The goal is to enable companies to securely house critical IT equipment in a sustainable environment with bespoke solutions and connectivity.
O documento explica como calcular o ano inicial de cada século no calendário gregoriano, começando com o nascimento de Jesus no ano 1 d.C. (1) Todo século tem 100 anos e começa com um ano que termina em "01"; (2) Para calcular o ano inicial, diminua 1 do número do século e acrescente "01"; (3) Exemplos incluem século I (ano 1), século XIV (ano 1301) e século XXI (ano 2001).
La globalización solo beneficia a los ricos y poderosos, no a los pobres. A pesar de años de globalización, dos tercios de la población mundial sigue siendo pobre. La globalización es una perversión económica controlada por grandes empresas que han convertido a los gobiernos en sus rehenes. La economía global ha eliminado las fronteras morales y rige la ley del más fuerte, esclavizando a los más débiles para que sobrevivan y sigan siendo explotados.
O documento é uma oração que pede a Deus para acalmar o passo da pessoa, diminuindo seu ritmo apressado através da contemplação da natureza, do sono reparador e de pequenos momentos de lazer, para que possa perceber Sua presença constante e entoar o cântico da esperança.
Este documento presenta los ambientes de aprendizaje para la educación en tecnología e informática, con un enfoque internacional. Describe las características básicas internacionales de la tecnología e informática como una disciplina transversal implementada en el currículo de manera interdisciplinaria. Explica los propósitos del área de tecnología e informática, que busca proyectar en los estudiantes una cultura ciudadana para comprender e interpretar la tecnología actual con visión crítica. También resume los aspectos evaluados, como
Modelos de la epigrafía clásica en las inscripciones hispanas de los siglos X...Manuel Ramírez Sánchez
Comunicación titulada "Modelos de la epigrafía clásica en las inscripciones hispanas de los siglos XV al XVII", presentada en el Seminario Internacional Pedres, pergamins i papers. Memòria de lèpigrafia romana de l'Antiguitat tardana al Barroco, organizado por la Universitat Autònoma de Barcelona (13-15 diciembre 2011)
Vipul Kashyap is seeking full-time opportunities in software development or machine learning. He has a Master's in Computer Science from North Carolina State University with a 4.0 GPA and a Bachelor's in Computer Engineering from University of Mumbai, India with a 71%. He has experience as an IBM Watson Software Developer Intern where he created APIs using Node.js and as a Deloitte Consulting Business Technology Analyst where he created a web application using Java, SQL, and PHP. He has strong technical skills in languages like Java, Python, C#, C++ and frameworks like Node.js, ASP.NET, and technical skills in tools like Git, SQL Server, and Visual Studio.
O documento fornece informações sobre montanhas e cordilheiras, incluindo os 14 picos mais altos do mundo com mais de 8.000 metros, liderados pelo Everest com 8.872 metros. É mencionado que uma cordilheira é um conjunto de montanhas e exemplos como o Himalaia e o Karakoram na Ásia são dados.