For many years, purchasing and supplier performance evaluation have been discussed in both academic and industrial circles to improve buyer-supplier relationship. In this study, a novel model is presented to evaluate supplier performance according to different purchasing classes. In the proposed method, clustering analysis is applied to develop purchasing portfolio model using available data in...

Kraljic’s purchasing portfolio approach has inspired many academics to undertake further research into purchasing portfolio models. Refined models typically recommend one purchasing strategy for each portfolio quadrant. Yet, it has been shown that purchasers make a clear distinction between alternative purchasing strategies within each quadrant. The fundamental assumption of portfolio models se...

Kraljic's (1983) purchasing portfolio approach holds that different types of purchases need different sourcing strategies, underpinned by distinct sets of resources and practices. The approach is widely deployed in business and extensively researched, and yet little research has been conducted on how knowledge and skills vary across a portfolio of purchases. This study extends the body of knowl...

Kraljic’s purchasing portfolio model, which was introduced in 1983, still is the dominant approach in the profession. Contrary to the growing use of the Kraljic matrix, there are problems and unanswered questions with respect to measurement and strategic issues. Based on explorative case studies, the critique of Kraljic’s model has been disputed and refuted to a large extent. This study describ...

I ran Insurance Company intends to raise its financial credit and render enhanced services to the insured and the public. The need to meet financial obligations arising from the claims requires determination of the optimum deposited claims reserve with banks. Therefore, the present research study aimed at finding the loss ratio (incurred losses to premiu...

We consider the problem of optimally determining an investment portfolio for an energy company owning a network of gas pipelines, and in charge of purchasing, selling and distributing gas. We propose a two stage stochastic investment model which hedges risk by means of Conditional Value at Risk constraints. The model, solved by a decomposition method, is assessed on a real-life case, of a Brazi...

OBJECTIVE Despite the clear political will to promote telemedicine and the large number of initiatives, the incorporation of this modality in clinical practice remains limited. The objective of this study was to identify the barriers perceived by key professionals who actively participate in the design and implementation of telemedicine in a healthcare system model based on purchasing of health...

the studies performed regarding the reasons for villagers’ migration to cities confirm the fact that the motivation for migrants to migrate is to attain higher incomes. the proposed method in this research to recuce migration is to transform the farmer into portfolio entrepreneurs. the applicability of this method to increase farmers' income to reduce their migration is tested throughout t...

This paper examines the risk of value investing from the point of view of a myopic loss-averse investor holding a diversified portfolio and relying on infrequent portfolio rebalancing. This closely resembles purchasing a large portfolio, such as those created by BARRA, and following a buy-and-hold investment strategy. In these circumstances, which portfolio, value or growth, is riskier to a myo...

supply chain management is a set of guidelines for integration of chains, which aims to reduce costs and increase system services to customers. one of the most important issues for supply chain stockholders is procuring and purchasing requested items in a timely manner. thus, a variety of models have been proposed as purchasing strategy in supply chains. group purchasing is a system which leads...