Ruey Yeh | National Taiwan University of Science and Technology (original) (raw)

Papers by Ruey Yeh

Deep Blue (University of Michigan), 1993

European Journal of Operational Research, Feb 1, 2000

Mathematical Problems in Engineering, 2016

This paper investigates a support service supply chain for coordinating with a local third-party ... more This paper investigates a support service supply chain for coordinating with a local third-party logistics provider by arms offset program’s intervention and develops a performance-based contracting framework for the coordinating problem, which remains scarce in the literatures. The performance-based contracting framework evaluates payments and profits for the support service by a game-theoretical approach with principal-agent model. We prove that the proposed framework is an effective tool in acquiring the balance between maximum profit and minimum payment for both parties in the coordinating problem without moral hazard issue. A numerical study consolidates the formulated schemes as contracting preference for both parties’ decision with a higher profit margin at a lower customer’s payment.

Quality Technology & Quantitative Management, 2013

Abstract The partnerships of performance-based contracting (PBC) between government and original ... more Abstract The partnerships of performance-based contracting (PBC) between government and original equipment manufacturer (OEM) have been well demonstrated in most studies, but very few attempts have been made at such partnerships between a foreign government (FG) and a localized third-party logistics (3PL) supplier while they operated the same system. This article constructs a principal-agent model to support resource allocation, and then uses it to analyze commonly observed risk-aversion contracting between a FG customer (principal) and a localized 3PL logistics supplier (agent) with cooperative game combinations by fixed payment, cost-sharing incentive, as well as a performance incentive conditions. Finally, a real military logistics service application in Taiwan is demonstrated by the assessment model to generate the maximum utilities while under cost-sharing incentive condition by using offset obligation between FG and OEM.

Proceedings of the Institute of Industrial Engineers Asian Conference 2013, 2013

An engine fuel supply subsystem for particular type of aircraft plays an important role in provid... more An engine fuel supply subsystem for particular type of aircraft plays an important role in providing, controlling, and distributing the fuel during engine operation. Failure on this subsystem will affect the readiness of the aircraft for operations. Therefore, for system experienced an aging characteristic or wear-out period, determining of the optimal preventive maintenance and optimal preventive replacement interval by considering the total cost of maintenance per unit time is important. In order to support the replacement activity, available number of spare parts required and must be well controlled to avoid either over stock or shortage. In this study, we attempt to determine the preventive maintenance interval and preventive replacement interval and its required inventory spare parts as well. We deliberate the cost structure, failure field data, and the reliability along the designing and managing the maintenance activity. We also examine the implication of the designed maintenance interval on reliability and availability of the system.

$Research paper thumbnail of Designing a variables two-plan sampling system of type TNTVSS-(nT,nN;k) for controlling process fraction nonconforming with unilateral specification limit$

International Journal of Production Research, 2015

ABSTRACT This paper proposes a variables two-plan sampling system involving normal and tightened ... more ABSTRACT This paper proposes a variables two-plan sampling system involving normal and tightened inspections, denoted as TNTVSS-, for controlling process fraction nonconforming with a unilateral specification limit based on one-sided capability indices. The system utilises two single variables sampling plans with different sample sizes and the same critical acceptance value , where and are sample sizes required for tightened inspection and normal inspection, respectively. The tightened inspection plan is used when the quality deteriorates and the normal inspection plan is used when the quality is found to be good. The operating characteristic (OC) function of the proposed sampling system is developed based on the exact sampling distribution. The plan parameters under various settings are determined by solving two non-linear equations simultaneously, which satisfy the required quality levels and allowable risks given by the producer and the consumer. The behaviour of the proposed sampling system in terms of the OC curve and the average sample number are also examined, discussed and compared with the traditional single variables sampling plan.

In this paper, an economic order quantity (EOQ) model is developed for the situation where produc... more In this paper, an economic order quantity (EOQ) model is developed for the situation where products received are not of perfect quality and complete backordering is assumed for any shortages. Whenever a new lot arrives, backorders are fulfilled first without inspection, and therefore any items of poorquality released to fulfill backorders will result in added warranty cost. The remaining items are then inspected at a certain screening rate and items of poor-quality are sold as a single batch at a discounted price. A mathematical model is developed to determine an optimal ordering policy such that the total profit per unit time is maximized. A closed-form solution of the optimal policy is derived and some sensitivity analyses are carried out to study the effects of the cost parameters on the optimal policy. Finally, a numerical example is given to evaluate the performance of the optimal policy.

International Journal of Production Economics, 1998

European Journal of Operational Research, 2000

World Academy of Science, Engineering and Technology, International Journal of Industrial and Manufacturing Engineering, 2015

Journal of the Chinese Institute of Industrial Engineers

Failure mode and effect analysis (FMEA) is a widely used risk assessment tool to identify the pot... more Failure mode and effect analysis (FMEA) is a widely used risk assessment tool to identify the potential failure modes of a product or a process. By ranking the priorities for corrective action according to the respective effects of the failures, the chance of the failures can be reduced or eliminated. However, there could be several difficulties during conducting conventional FMEA such as the subjective and qualitative description in natural language, the relative importance among the risk ratings, the difference of risk representation among the same ratings; and the knowledge shared among FMEA team members. Thus, a new risk assessment system based on fuzzy theory is proposed in this paper to deal with these difficulties. Furthermore, an FMEA is conducted for a sewage plant to demonstrate the proposed fuzzy assessment of FMEA.

Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2012

This article formulates a novel fuzzy multilevel multiobjective production planning model for a s... more This article formulates a novel fuzzy multilevel multiobjective production planning model for a supply chain under a fuzzy environment. An efficient two-phase interactive solution procedure is developed to obtain a good solution that maximizes the total supply chain profit and the satisfactory degree. The proposed solution procedure, modified from Sakawa et al.’s interactive fuzzy programming approach, can be easily adopted by practitioners. Through a negotiation case study, a well-known network product manufacturing supply chain in Taiwan is presented to demonstrate the effectiveness and aptness of the proposed model and the solution procedure, as compared with Sakawa et al.’s method with only one objective at the manufacturer level. Finally, several important findings and managerial implications are drawn from the results of this study.