The Experts below are selected from a list of 92181 Experts worldwide ranked by ideXlab platform
Dong Xie - One of the best experts on this subject based on the ideXlab platform.
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decision method for the optimal number of logistics service providers with service Quality Guarantee and revenue fairness
Applied Mathematical Modelling, 2017Co-Authors: Weihua Liu, Xinran Shen, Dong XieAbstract:Abstract This study investigates the problem that logistics service integrator (LSI) selects the optimal number of its functional logistics service providers (FLSPs) based on the service Quality defect Guarantee promised by FLSP and the revenue fairness concerns of LSI. This paper introduces a fairness entropy function to establish a new game model for determining the optimal number of FLSPs. Some conclusions about the impact of parameters on the optimal number of FLSPs are proposed with numerical analysis. For example, as the fairness constraints are satisfied, LSI prefers FLSPs who have higher level of business capacity which results a smaller number of FLSPs.
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service capability procurement decision in logistics service supply chain a research under demand updating and Quality Guarantee
International Journal of Production Research, 2015Co-Authors: Weihua Liu, Dong Xie, Yang Liu, Xiaoyan LiuAbstract:Though existing researches have already studied on service Quality Guarantee and demand updating in a supply chain respectively, there is little attention paid to integrated research on service Quality Guarantee problem with demand updating. This paper aims to investigate the impacts of demand uncertainty revelation and Quality Guarantee change cost (GCC) on the optimal decisions of logistics service integrator (LSI) and functional logistics service provider (FLSP) in a logistics service supply chain. At the beginning of the first period, the FLSP first Guarantees an initial Quality level and the LSI procures service capacity from the FLSP based on the demand prediction. Then the demand information is updated after the first-period demand being satisfied, and the LSI and the FLSP make their optimal decisions based on the renewed demand in the next period. Before the second period, uncertainty complete revelation/uncertainty incomplete revelation (UCR/UIR) and GCC/no Guarantee change cost (NGCC) may take p...
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Quality decision of the logistics service supply chain with service Quality Guarantee
International Journal of Production Research, 2013Co-Authors: Weihua Liu, Dong XieAbstract:In the logistics service supply chain (LSSC), Quality supervision and coordination is an important approach that can ensure the effective operation of LSSC and obtain more customers. This paper aims to study the Quality decisions of the functional logistics service provider (FLSP) and the logistics service integrator (LSI) when a service Quality defect Guarantee is promised by the FLSP. Assuming that customer demand is a function of the Quality defect Guarantee of the FLSP, the optimal Quality decisions of the LSI and FLSP are presented under three typical game modes: Nash game, Stackelberg game, and centralised decision. Numerical analysis is conducted to show how the Quality parameters of the customer affect the optimal Quality decision-making behaviour of the LSI and FLSP. The research results indicate that, under all three game modes, the optimal Quality defect Guarantee of the FLSP increases as the customer punishment increases, and decreases as the elasticity of the customer demand for the Quality d...
Gunnar W Klau - One of the best experts on this subject based on the ideXlab platform.
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a new graph based method for pairwise global network alignment
BMC Bioinformatics, 2009Co-Authors: Gunnar W KlauAbstract:Background: In addition to component-based comparative approaches, network alignments provide the means to study conserved network topology such as common pathways and more complex network motifs. Yet, unlike in classical sequence alignment, the comparison of networks becomes computationally more challenging, as most meaningful assumptions instantly lead to NPhard problems. Most previous algorithmic work on network alignments is heuristic in nature. Results: We introduce the graph-based maximum structural matching formulation for pairwise global network alignment. We relate the formulation to previous work and prove NP-hardness of the problem. Based on the new formulation we build upon recent results in computational structural biology and present a novel Lagrangian relaxation approach that, in combination with a branch-and-bound method, computes provably optimal network alignments. The Lagrangian algorithm alone is a powerful heuristic method, which produces solutions that are often near-optimal and – unlike those computed by pure heuristics – come with a Quality Guarantee. Conclusion: Computational experiments on the alignment of protein-protein interaction networks and on the classification of metabolic subnetworks demonstrate that the new method is reasonably fast and has advantages over pure heuristics. Our software tool is freely available as part of the LISA library.
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a new graph based method for pairwise global network alignment
BMC Bioinformatics, 2009Co-Authors: Gunnar W KlauAbstract:In addition to component-based comparative approaches, network alignments provide the means to study conserved network topology such as common pathways and more complex network motifs. Yet, unlike in classical sequence alignment, the comparison of networks becomes computationally more challenging, as most meaningful assumptions instantly lead to NP-hard problems. Most previous algorithmic work on network alignments is heuristic in nature. We introduce the graph-based maximum structural matching formulation for pairwise global network alignment. We relate the formulation to previous work and prove NP-hardness of the problem. Based on the new formulation we build upon recent results in computational structural biology and present a novel Lagrangian relaxation approach that, in combination with a branch-and-bound method, computes provably optimal network alignments. The Lagrangian algorithm alone is a powerful heuristic method, which produces solutions that are often near-optimal and – unlike those computed by pure heuristics – come with a Quality Guarantee. Computational experiments on the alignment of protein-protein interaction networks and on the classification of metabolic subnetworks demonstrate that the new method is reasonably fast and has advantages over pure heuristics. Our software tool is freely available as part of the LI SA library.
Weihua Liu - One of the best experts on this subject based on the ideXlab platform.
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decision method for the optimal number of logistics service providers with service Quality Guarantee and revenue fairness
Applied Mathematical Modelling, 2017Co-Authors: Weihua Liu, Xinran Shen, Dong XieAbstract:Abstract This study investigates the problem that logistics service integrator (LSI) selects the optimal number of its functional logistics service providers (FLSPs) based on the service Quality defect Guarantee promised by FLSP and the revenue fairness concerns of LSI. This paper introduces a fairness entropy function to establish a new game model for determining the optimal number of FLSPs. Some conclusions about the impact of parameters on the optimal number of FLSPs are proposed with numerical analysis. For example, as the fairness constraints are satisfied, LSI prefers FLSPs who have higher level of business capacity which results a smaller number of FLSPs.
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service capability procurement decision in logistics service supply chain a research under demand updating and Quality Guarantee
International Journal of Production Research, 2015Co-Authors: Weihua Liu, Dong Xie, Yang Liu, Xiaoyan LiuAbstract:Though existing researches have already studied on service Quality Guarantee and demand updating in a supply chain respectively, there is little attention paid to integrated research on service Quality Guarantee problem with demand updating. This paper aims to investigate the impacts of demand uncertainty revelation and Quality Guarantee change cost (GCC) on the optimal decisions of logistics service integrator (LSI) and functional logistics service provider (FLSP) in a logistics service supply chain. At the beginning of the first period, the FLSP first Guarantees an initial Quality level and the LSI procures service capacity from the FLSP based on the demand prediction. Then the demand information is updated after the first-period demand being satisfied, and the LSI and the FLSP make their optimal decisions based on the renewed demand in the next period. Before the second period, uncertainty complete revelation/uncertainty incomplete revelation (UCR/UIR) and GCC/no Guarantee change cost (NGCC) may take p...
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Quality decision of the logistics service supply chain with service Quality Guarantee
International Journal of Production Research, 2013Co-Authors: Weihua Liu, Dong XieAbstract:In the logistics service supply chain (LSSC), Quality supervision and coordination is an important approach that can ensure the effective operation of LSSC and obtain more customers. This paper aims to study the Quality decisions of the functional logistics service provider (FLSP) and the logistics service integrator (LSI) when a service Quality defect Guarantee is promised by the FLSP. Assuming that customer demand is a function of the Quality defect Guarantee of the FLSP, the optimal Quality decisions of the LSI and FLSP are presented under three typical game modes: Nash game, Stackelberg game, and centralised decision. Numerical analysis is conducted to show how the Quality parameters of the customer affect the optimal Quality decision-making behaviour of the LSI and FLSP. The research results indicate that, under all three game modes, the optimal Quality defect Guarantee of the FLSP increases as the customer punishment increases, and decreases as the elasticity of the customer demand for the Quality d...
Ronald W Ward - One of the best experts on this subject based on the ideXlab platform.
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consumer interest in information cues denoting Quality traceability and origin an application of ordered probit models to beef labels
Food Quality and Preference, 2006Co-Authors: Wim Verbeke, Ronald W WardAbstract:The objective of this paper is, first, to determine which information cues on beef labels really attract consumer interest, specified as the level of perceived importance attached to and attention paid to label cues. The focus is (1) on indications of Quality through a Quality label and Quality Guarantee, (2) on indications referring to the mandatory European beef labelling regulation and traceability system, and (3) on indications reflecting country-of-origin. The second objective is to assess the impact of a campaign aiming at informing consumers about beef traceability, and at raising consumer interest in beef Quality, traceability and origin. Data were collected from a sample of 278 beef consumers in Belgium. Ordered probit models were specified and estimated to assess the impact of individual characteristics and the beef labelling information campaign. Findings reveal that consumer interest is generally low for traceability, moderate for origin and high for direct indications of Quality like a Quality Guarantee seal or expiration date. Interest in label cues is specifically low among younger males. Further, the information campaign had a measurable positive impact on consumer attention paid to direct indications of Quality and country-of-origin. Strategies including traceability for backing up on-label indications of Quality and origin, rather than providing consumers with detailed traceability information on-label, are recommended.
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consumer interest in information cues denoting Quality traceability and origin an application of ordered probit models to beef labels
Food Quality and Preference, 2006Co-Authors: Wim Verbeke, Ronald W WardAbstract:The objective of this paper is, first, to determine which information cues on beef labels really attract consumer interest, specified as the level of perceived importance attached to and attention paid to label cues. The focus is (1) on indications of Quality through a Quality label and Quality Guarantee, (2) on indications referring to the mandatory European beef labelling regulation and traceability system, and (3) on indications reflecting country-of-origin. The second objective is to assess the impact of a campaign aiming at informing consumers about beef traceability, and at raising consumer interest in beef Quality, traceability and origin. Data were collected from a sample of 278 beef consumers in Belgium. Ordered probit models were specified and estimated to assess the impact of individual characteristics and the beef labelling information campaign. Findings reveal that consumer interest is generally low for traceability, moderate for origin and high for direct indications of Quality like a Quality Guarantee seal or expiration date. Interest in label cues is specifically low among younger males. Further, the information campaign had a measurable positive impact on consumer attention paid to direct indications of Quality and country-of-origin. Strategies including traceability for backing up on-label indications of Quality and origin, rather than providing consumers with detailed traceability information on-label, are recommended.
Wim Verbeke - One of the best experts on this subject based on the ideXlab platform.
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European beef consumers’ interest in a beef eating-Quality Guarantee Insights from a qualitative study in four EU countries
Appetite, 2010Co-Authors: Wim Verbeke, Lynn Van Wezemael, Marcia D. De Barcellos, Jens O. Kugler, Jean-françois Hocquette, Oydis Ueland, Klaus G. GrunertAbstract:Consumer demand in relation to food is shifting towards products that are safe, nutritious, and of good eating Quality. Beef consumers are demanding for experience Quality that matches their expectations, particularly with respect to beef tenderness. The development of a beef Quality grading and Guarantee system obtained through muscle profiling research, can allow the beef industry to meet these demands. A qualitative consumer study has been carried out with beef consumers in France, Spain, United Kingdom and Germany to assess their opinions about beef muscle profiling and their interest in a beef eating-Quality Guarantee. Findings indicate that both concepts are well accepted by European beef consumers, although not unconditional. Participants express some reserve related to the possible upgrading of lower value cuts, too much standardisation, and the fact that tenderness is to some extent subjective. They further require the system to be simple, sufficiently documented and independentparty controlled. This study indicates good opportunities for the development of a beef eating-Quality Guarantee system in Europe. As an increase in consumers’ satisfaction could lead to higher consumption rates and industry profitability, the introduction of an eating-Quality Guarantee system can contribute to market development and improved competitiveness of the European beef industry.
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consumer interest in information cues denoting Quality traceability and origin an application of ordered probit models to beef labels
Food Quality and Preference, 2006Co-Authors: Wim Verbeke, Ronald W WardAbstract:The objective of this paper is, first, to determine which information cues on beef labels really attract consumer interest, specified as the level of perceived importance attached to and attention paid to label cues. The focus is (1) on indications of Quality through a Quality label and Quality Guarantee, (2) on indications referring to the mandatory European beef labelling regulation and traceability system, and (3) on indications reflecting country-of-origin. The second objective is to assess the impact of a campaign aiming at informing consumers about beef traceability, and at raising consumer interest in beef Quality, traceability and origin. Data were collected from a sample of 278 beef consumers in Belgium. Ordered probit models were specified and estimated to assess the impact of individual characteristics and the beef labelling information campaign. Findings reveal that consumer interest is generally low for traceability, moderate for origin and high for direct indications of Quality like a Quality Guarantee seal or expiration date. Interest in label cues is specifically low among younger males. Further, the information campaign had a measurable positive impact on consumer attention paid to direct indications of Quality and country-of-origin. Strategies including traceability for backing up on-label indications of Quality and origin, rather than providing consumers with detailed traceability information on-label, are recommended.
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consumer interest in information cues denoting Quality traceability and origin an application of ordered probit models to beef labels
Food Quality and Preference, 2006Co-Authors: Wim Verbeke, Ronald W WardAbstract:The objective of this paper is, first, to determine which information cues on beef labels really attract consumer interest, specified as the level of perceived importance attached to and attention paid to label cues. The focus is (1) on indications of Quality through a Quality label and Quality Guarantee, (2) on indications referring to the mandatory European beef labelling regulation and traceability system, and (3) on indications reflecting country-of-origin. The second objective is to assess the impact of a campaign aiming at informing consumers about beef traceability, and at raising consumer interest in beef Quality, traceability and origin. Data were collected from a sample of 278 beef consumers in Belgium. Ordered probit models were specified and estimated to assess the impact of individual characteristics and the beef labelling information campaign. Findings reveal that consumer interest is generally low for traceability, moderate for origin and high for direct indications of Quality like a Quality Guarantee seal or expiration date. Interest in label cues is specifically low among younger males. Further, the information campaign had a measurable positive impact on consumer attention paid to direct indications of Quality and country-of-origin. Strategies including traceability for backing up on-label indications of Quality and origin, rather than providing consumers with detailed traceability information on-label, are recommended.
