Documents disponibles écrits par cet auteur

Multisourcing suppliers selection in service outsourcing / B. Feng in Journal of the operational research society (JORS), Vol. 63 N° 5 (Mai 2012) 

Public ISBD [article]  in Journal of the operational research society (JORS) > Vol. 63 N° 5 (Mai 2012) . - pp. 582–596 Titre : Multisourcing suppliers selection in service outsourcing Type de document : texte imprimé Auteurs : B. Feng, Auteur Année de publication : 2012 Article en page(s) : pp. 582–596 Note générale : Recherche opérationnelle Langues : Anglais (eng) Mots-clés : Decision  analysis  Outsourcing  Different  formats  of  preference  information  Bi-objective  0–1  programming Index. décimale : 001.424 Résumé : Multisourcing suppliers selection in service outsourcing involves selecting a supplier portfolio with a reasonable number of suppliers and better performance to cover aspiration levels of criteria. It is a specific weighted matching problem with new challenges. This paper proposes a decision method for solving this problem. In the proposed method, different formats of preference information, including numerical values, interval numbers and linguistic variables, are used to express alternative ratings. The technique for order preference by similarity to ideal solution is extended to aggregate the three formats of preference information. A bi-objective 0–1 linear programming model using the aggregated information is built to select a desired supplier portfolio, in which the objectives of minimization of suppliers number and maximization of supplier performance are involved. To solve this model, we transform it into an equivalent, and then an exact multi-objective branch-and-bound algorithm is developed to obtain Pareto-optimal solutions. In addition, a real case of an insurance company is used to illustrate the applicability of the proposed method. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n5/abs/jors201161a.html [article] Multisourcing suppliers selection in service outsourcing [texte imprimé] / B. Feng, Auteur . - 2012 . - pp. 582–596. Recherche opérationnelle Langues : Anglais (eng) in Journal of the operational research society (JORS) > Vol. 63 N° 5 (Mai 2012) . - pp. 582–596 Mots-clés : Decision  analysis  Outsourcing  Different  formats  of  preference  information  Bi-objective  0–1  programming Index. décimale : 001.424 Résumé : Multisourcing suppliers selection in service outsourcing involves selecting a supplier portfolio with a reasonable number of suppliers and better performance to cover aspiration levels of criteria. It is a specific weighted matching problem with new challenges. This paper proposes a decision method for solving this problem. In the proposed method, different formats of preference information, including numerical values, interval numbers and linguistic variables, are used to express alternative ratings. The technique for order preference by similarity to ideal solution is extended to aggregate the three formats of preference information. A bi-objective 0–1 linear programming model using the aggregated information is built to select a desired supplier portfolio, in which the objectives of minimization of suppliers number and maximization of supplier performance are involved. To solve this model, we transform it into an equivalent, and then an exact multi-objective branch-and-bound algorithm is developed to obtain Pareto-optimal solutions. In addition, a real case of an insurance company is used to illustrate the applicability of the proposed method. DEWEY : 001.424 ISSN : 0160-5682 En ligne : http://www.palgrave-journals.com/jors/journal/v63/n5/abs/jors201161a.html

A two-parameter function for nanoscale indentation measurement of near surface properties / K. Farhang in Transactions of the ASME . Journal of tribology, Vol. 130 N°1 (Janvier 2008) 

Public ISBD [article]  in Transactions of the ASME . Journal of tribology > Vol. 130 N°1 (Janvier 2008) . - 6 p. Titre : A two-parameter function for nanoscale indentation measurement of near surface properties Type de document : texte imprimé Auteurs : K. Farhang, Auteur ; L. E. Seitzman, Auteur ; B. Feng, Auteur Année de publication : 2008 Article en page(s) : 6 p. Note générale : Tribology Langues : Anglais (eng) Mots-clés : Nanoscale  phenomena  Surface  properties  Displacement  Equations  Errors  Elasticity  Functions  Shapes  Crystals  Force  measurement Résumé : A two-parameter function for estimation of projected area in instrumented indentation measurement is obtained to account for indenter tip imperfection. Imperfection near indenter tip is modeled using a spherical function and combined with a linear function describing the edge boundary of the indenter. Through an analytical fusion technique, the spherical and linear functions are combined into a single function with two unknown geometric parameters of tip radius of curvature and edge slope. Data from indentation measurement of force and displacement, using a Berkovich tip and single crystal alumina and silica samples, are implemented in the proposed area function yielding estimated values of Young’s modulus. Results were compared with that obtained from Oliver and Pharr technique for deep as well as shallow indentation regimes. The estimates for Young’s modulus were found to agree quite favorably. More importantly, in contrast to the Oliver–Pharr technique, the use of the two-parameter function resulted in a significantly more accurate estimation of Young’s modulus for shallow indentation depth of 0–50nm. The error in estimation of Young’s modulus was found to be within 10% for indentation depths of 25–50nm and within 20% for indentation depths of 0–25nm. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleID=1467964 [article] A two-parameter function for nanoscale indentation measurement of near surface properties [texte imprimé] / K. Farhang, Auteur ; L. E. Seitzman, Auteur ; B. Feng, Auteur . - 2008 . - 6 p. Tribology Langues : Anglais (eng) in Transactions of the ASME . Journal of tribology > Vol. 130 N°1 (Janvier 2008) . - 6 p. Mots-clés : Nanoscale  phenomena  Surface  properties  Displacement  Equations  Errors  Elasticity  Functions  Shapes  Crystals  Force  measurement Résumé : A two-parameter function for estimation of projected area in instrumented indentation measurement is obtained to account for indenter tip imperfection. Imperfection near indenter tip is modeled using a spherical function and combined with a linear function describing the edge boundary of the indenter. Through an analytical fusion technique, the spherical and linear functions are combined into a single function with two unknown geometric parameters of tip radius of curvature and edge slope. Data from indentation measurement of force and displacement, using a Berkovich tip and single crystal alumina and silica samples, are implemented in the proposed area function yielding estimated values of Young’s modulus. Results were compared with that obtained from Oliver and Pharr technique for deep as well as shallow indentation regimes. The estimates for Young’s modulus were found to agree quite favorably. More importantly, in contrast to the Oliver–Pharr technique, the use of the two-parameter function resulted in a significantly more accurate estimation of Young’s modulus for shallow indentation depth of 0–50nm. The error in estimation of Young’s modulus was found to be within 10% for indentation depths of 25–50nm and within 20% for indentation depths of 0–25nm. En ligne : http://tribology.asmedigitalcollection.asme.org/article.aspx?articleID=1467964