This paper employs mathematical modeling and algebraic approach to derive the optimal manufacturing batch size and number of shipment for a vendor-buyer integrated economic production quantity (EPQ) model with scrap. Unlike the conventional method by using differential calculus to determine replenishment lot size and optimal number of shipments for such an integrated system, this paper proposes...

In this paper, two economic production quantity (EPQ) models are proposed for deteriorating/imperfect items with rework process. The production process is imperfect, and imperfect quality items are reworked to become serviceable. At the same time, the remaining good quality items may deteriorate. The inspection of deteriorated items is also imperfect, so that deteriorated items may be sold to c...

This paper develops economic production quantity (EPQ)-based models with planned backorders to evaluate the impact of the postponement strategy on a manufacturer in a supply chain. We derive the optimal total average costs per unit time for producing and keeping n end-products in a postponement system and a nonpostponement system, respectively. By comparing the optimal total average costs of th...

Within the economic production quantity (EPQ) framework, the main purpose of this paper is to deal with Chung and Huang’s model (2003) and extend Chung and Huang’s model (2003) by considering the unit selling price higher than the unit purchasing cost using the algebraic method to determine the optimal inventory replenishment policy for the retailer under trade credit. This paper provides this ...

Three studies find Creativity correlates with Psychoticism and Intelligence. With 52 university professors, publication and citation counts correlated 0.26 (P < 0.05) with Psychoticism assessed by a weighted composite of trait ratings made by faculty-peers and 0.40 (P < 0.01) with faculty-peer rated intelligence. Among 69 university professors, an enjoyment of research composite correlated r = ...

We investigated the relationship between date of birth and individual differences in personality and intelligence in two large samples. The first sample consisted of 4000+ middle-aged male subjects from the Vietnam Experience Study; personality was measured by the MMPI items converted to EPQ (scales) and a large battery of cognitive tests were factored to derive general intelligence, g. The sec...

Women with bulimia nervosa and controls were compared on their short-form Eysenck Personality Questionnaire-Revised (EPQ-R) scores. It was found that women with bulimia nervosa scored significantly higher on neuroticism and significantly lower on the Lie Scale. This latter result could not be explained by differentiation of the Lie Scale into its two components, social desirability and ‘faking ...

the high quality and quantity seed production in old saxual shrubs are essential for regeneration and sustainable development of saxual forests in desert areas. the objective of this study was to determine the effects of different pruning height on saxual seed production. the study was carried out in an obviously wilted saxual forest located in ashkezar desert in yazd in 1994. the experiment wa...

The high quality and quantity seed production in old saxual shrubs are essential for regeneration and sustainable development of saxual forests in desert areas. The objective of this study was to determine the effects of different pruning height on saxual seed production. The study was carried out in an obviously wilted saxual forest located in Ashkezar desert in Yazd in 1994. The experiment wa...