Consumption Behavior and Willingness to Pay for Fruit Drinks in Bangkok Metropolitan Area

The purpose of this research was to study consumer behaviors, willingness to pay and the factors affecting willingness to pay for ready-to-drink fruit drinks less than 25% with the certified quality assurance system by using contingent valuation method (CVM) for consumers in Bangkok. The results from double-bounded dichotomous choice found that the consumers were willing to pay for fruit drinks less than 25% with GMP certification at 15.22 baht/bottle and 15.58 baht/bottle for fruit drinks less than 25% with HACCP certification. Factors that affected the consumer's willingness to pay were education, income and attitudes about product that have been certified

S. M. Ryan* and J. Vorasayan

To operate a multiple product manufacturing system under a CONWIP control policy, one must decide how to assign kanbans to products. With a fixed total number of kanbans in a competitive environment, the goal is to determine their allocation to product types in order to minimize lost sales equitably. In particular, we consider systems in which the products may make multiple visits to the same station with a different processing time distribution on each repeat visit. With a fixed number of kanbans dedicated to each product, the system is modeled as a multiple chain multiple class closed queuing network. A nonlinear program simultaneously provides an approximate performance evaluation and optimizes the allocation of kanbans to product types. In numerical examples, the allocations identified are similar to those obtained by exhaustive enumeration with simulation. A variant of the model that minimizes the total work-in-process to achieve specified throughput targets yields results similar to a previous heuristic method

Maximising the retained value of product recovery based on circular economy principles

Previous environmental studies indicate several barriers to circular economy and material efficiency including a lack of detailed methodologies for manufacturing improvement in terms of environmental and operational performances to measure, monitor and evaluate material consumption and waste generation. A lean and green tool, the green performance map (GPM), is an appropriate tool for different environmental initiatives including training, improvement, reporting and development. Through literature review and multiple case study methodology, this chapter presents the current application of GPM in industry and its usage to regularly measure and monitor material efficiency measurements on different levels and to remove barriers to improved material efficiency

Remanufacturing and consumers' risky choices: Behavioral modeling and the role of ambiguity aversion

Willingness to pay (WTP) is known to be lower for remanufactured products than for comparable new products. Normative work to date has assumed that a consumer\u27s WTP for a remanufactured product is a fraction, called discount factor, of the consumer\u27s WTP for a corresponding new product, and that this discount factor is constant across consumers. Recent empirical research demonstrates, however, that the discount factor is not constant across consumers. This discovery has led researchers to call for an exploration of more refined utility models that incorporate heterogeneous risk preferences through elements such as risk aversion, loss aversion, and ambiguity aversion. To address this call, this manuscript assesses each of these risk preference elements by empirically deriving WTP distributions from two interlinked studies. To provide triangulation in both the empirical method and sample, the interlinked studies employ an online survey and a laboratory experiment that elicits WTP for framed lotteries that proxy the situation of buying remanufactured products. The empirical results and robustness verifications demonstrate that a parsimonious standard utility model incorporating only risk aversion explains the WTP data reasonably well