Documents disponibles écrits par cet auteur

Developing a cost minimizing power load prediction model for steelwork industries / Jun-Hyung Ryu in Industrial & engineering chemistry research, Vol. 49 N° 8 (Avril 2010) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3952–3956 Titre : Developing a cost minimizing power load prediction model for steelwork industries Type de document : texte imprimé Auteurs : Jun-Hyung Ryu, Auteur ; Dong Joon Yoo, Auteur ; In-Beum Lee, Auteur Année de publication : 2010 Article en page(s) : pp. 3952–3956 Langues : Anglais (eng) Mots-clés : Minimizing  Power  Steelwork  Industries Résumé : The key issue of power systems is to match power demand and supply with the minimum gap and delay. In the steelmaking industry that is well-known for intensive power demand, multiple types of power supply sources are thus prepared. One is to use gas turbine generators consuming byproduct gases, another is to purchase power from external electricity companies, and yet another is to use in-house self-generators to prevent any interruptions. Because we have to prepare the power supply before demands are actually realized, the fuels for generators should be purchased based upon a relatively long-term plan, and redundant power should be consumed by being resold or in other ways. It is economically important to predict power load accurately for the profitability of the steelworks. A load prediction model is therefore mathematically formulated as a linear programming (LP) problem with a view to minimizing the overall power cost. A case of an actual steelmaking company in Korea is addressed to illustrate the applicability of the proposed model with some remarks. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900227e [article] Developing a cost minimizing power load prediction model for steelwork industries [texte imprimé] / Jun-Hyung Ryu, Auteur ; Dong Joon Yoo, Auteur ; In-Beum Lee, Auteur . - 2010 . - pp. 3952–3956. Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 49 N° 8 (Avril 2010) . - pp. 3952–3956 Mots-clés : Minimizing  Power  Steelwork  Industries Résumé : The key issue of power systems is to match power demand and supply with the minimum gap and delay. In the steelmaking industry that is well-known for intensive power demand, multiple types of power supply sources are thus prepared. One is to use gas turbine generators consuming byproduct gases, another is to purchase power from external electricity companies, and yet another is to use in-house self-generators to prevent any interruptions. Because we have to prepare the power supply before demands are actually realized, the fuels for generators should be purchased based upon a relatively long-term plan, and redundant power should be consumed by being resold or in other ways. It is economically important to predict power load accurately for the profitability of the steelworks. A load prediction model is therefore mathematically formulated as a linear programming (LP) problem with a view to minimizing the overall power cost. A case of an actual steelmaking company in Korea is addressed to illustrate the applicability of the proposed model with some remarks. ISSN : 0888-5885 En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900227e

Developing a planning strategy with a focus on managing planning data / Jun-Hyung Ryu in Industrial & engineering chemistry research, Vol. 50 N° 12 (Juin 2011) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7355-7362 Titre : Developing a planning strategy with a focus on managing planning data Type de document : texte imprimé Auteurs : Jun-Hyung Ryu, Auteur Année de publication : 2011 Article en page(s) : pp. 7355-7362 Note générale : Chimie industrielle Langues : Anglais (eng) Mots-clés : Planning Résumé : Considerable attention has been given to planning in academia. While most works are concerned with developing mathematical models and their computation algorithms, little attention has been given to managing the data in the planning. A new planning framework is thus presented by explicitly incorporating data management with planning decision-making processes. A numerical example of multiperiod batch process planning and a case study of a semiconductor manufacturing company are presented to illustrate the applicability of the presented framework. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239051 [article] Developing a planning strategy with a focus on managing planning data [texte imprimé] / Jun-Hyung Ryu, Auteur . - 2011 . - pp. 7355-7362. Chimie industrielle Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 50 N° 12 (Juin 2011) . - pp. 7355-7362 Mots-clés : Planning Résumé : Considerable attention has been given to planning in academia. While most works are concerned with developing mathematical models and their computation algorithms, little attention has been given to managing the data in the planning. A new planning framework is thus presented by explicitly incorporating data management with planning decision-making processes. A numerical example of multiperiod batch process planning and a case study of a semiconductor manufacturing company are presented to illustrate the applicability of the presented framework. DEWEY : 660 ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=24239051

Development of an agent - based modeling methodology for an industrial byproduct exchange network design / Hyunjoo Kim in Industrial & engineering chemistry research, Vol. 51 N° 33 (Août 2012) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 51 N° 33 (Août 2012) . - pp. 10860-10868 Titre : Development of an agent - based modeling methodology for an industrial byproduct exchange network design Type de document : texte imprimé Auteurs : Hyunjoo Kim, Auteur ; Jun-Hyung Ryu, Auteur ; In-Beum Lee, Auteur Année de publication : 2012 Article en page(s) : pp. 10860-10868 Note générale : Industrial chemistry Langues : Anglais (eng) Mots-clés : Design  Modeling Résumé : Byproduct exchange networks are attracting increasing attention to allow the use of byproducts that would have otherwise been discarded. To take full advantage of the benefits, it is necessary to consider the interacting features between the participating byproduct buyers and sellers in terms of both economic and environmental perspectives. This paper proposes an agent-based modeling framework as an alternative. A case of water reuse networks in an iron and steel manufacturing industrial park is presented to illustrate the applicability of the proposed framework. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26286460 [article] Development of an agent - based modeling methodology for an industrial byproduct exchange network design [texte imprimé] / Hyunjoo Kim, Auteur ; Jun-Hyung Ryu, Auteur ; In-Beum Lee, Auteur . - 2012 . - pp. 10860-10868. Industrial chemistry Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 51 N° 33 (Août 2012) . - pp. 10860-10868 Mots-clés : Design  Modeling Résumé : Byproduct exchange networks are attracting increasing attention to allow the use of byproducts that would have otherwise been discarded. To take full advantage of the benefits, it is necessary to consider the interacting features between the participating byproduct buyers and sellers in terms of both economic and environmental perspectives. This paper proposes an agent-based modeling framework as an alternative. A case of water reuse networks in an iron and steel manufacturing industrial park is presented to illustrate the applicability of the proposed framework. ISSN : 0888-5885 En ligne : http://cat.inist.fr/?aModele=afficheN&cpsidt=26286460

Development of a scheduling model for polarizer manufacturing logistics / Kyung Tae Park in Industrial & engineering chemistry research, Vol. 48 N° 6 (Mars 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3234–3243 Titre : Development of a scheduling model for polarizer manufacturing logistics Type de document : texte imprimé Auteurs : Kyung Tae Park, Auteur ; Jun-Hyung Ryu, Auteur ; Ho-Kyung Lee, Auteur Année de publication : 2009 Article en page(s) : pp. 3234–3243 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Polarizer  Liquid  crystal  displays  Linear  programming  problem Résumé : Polaroid films, or the so-called “polarizer”, is an optical device that transforms natural light into some form of polarized light. When the form of films, it is widely used in thin display equipment, such as liquid crystal displays (LCDs). The polarizer manufacturing industry is under constant competition to lower its price with the continuous price reduction in LCD markets. This paper is particularly concerned with its logistics problems, with a focus on minimizing the cost for purchasing cores used in moving films in the process. The core movement for polarizer logistics is formulated into a linear programming (LP) problem by employing an event-based pull approach that has been proposed earlier by Karimi et al. [Karaimi, I. A.; Sharafali, M.; Mahalingam, H. AIChE J., 2004, 51, 178−197]. Two numerical examples are presented to illustrate the applicability of the proposed model, and some remarks also are made. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009044 [article] Development of a scheduling model for polarizer manufacturing logistics [texte imprimé] / Kyung Tae Park, Auteur ; Jun-Hyung Ryu, Auteur ; Ho-Kyung Lee, Auteur . - 2009 . - pp. 3234–3243. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 6 (Mars 2009) . - pp. 3234–3243 Mots-clés : Polarizer  Liquid  crystal  displays  Linear  programming  problem Résumé : Polaroid films, or the so-called “polarizer”, is an optical device that transforms natural light into some form of polarized light. When the form of films, it is widely used in thin display equipment, such as liquid crystal displays (LCDs). The polarizer manufacturing industry is under constant competition to lower its price with the continuous price reduction in LCD markets. This paper is particularly concerned with its logistics problems, with a focus on minimizing the cost for purchasing cores used in moving films in the process. The core movement for polarizer logistics is formulated into a linear programming (LP) problem by employing an event-based pull approach that has been proposed earlier by Karimi et al. [Karaimi, I. A.; Sharafali, M.; Mahalingam, H. AIChE J., 2004, 51, 178−197]. Two numerical examples are presented to illustrate the applicability of the proposed model, and some remarks also are made. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie8009044