This study models a joint pricing, inventory, and preservation decision-making problem for deteriorating items subject to stochastic demand and promotional effort. The generalized price-dependent stochastic demand, time proportional deterioration, and partial backlogging rates are used to model the inventory system. The objective is to find the optimal pricing, replenishment, and preservation t...

Aspects referring to the formation of portfolio of projects for investments in informatization programs are approached: criteria of efficiency, general problem, aggregate problem in continuous form, general problem in discrete form and solving of problems. As criterion of informatization projects’ economic efficiency, the total profit maximization due to investments is used. In preliminary calc...

Given a set of points P in the plane and profits (or prizes) π : P → R≥0 we want to select a maximum profit set X ⊆ P which maximizes P p∈X π(p) − μ(X) for some particular criterion μ(X). In this paper we consider four such criteria, namely the perimeter and the area of the smallest axis-parallel rectangle containing X, and the perimeter and the area of the convex hull conv(X) of X. Our key res...

In this paper, the present investigation has been conducted keeping in mind some of the problems concerning the crack propagation direction and growth under constant loading in an inclined crack geometry. The present studies mainly focused on the development and modifications in the crack growth criterion to account the biaxial, shear loading and number of stress terms. Existing criteria for th...

We analyze the impact of an endogenous minimum quality standard (MQS) imposed on an industry collectively by producers based upon a profit criterion, a situation common to agricultural industries. A MQS can enhance net welfare in these settings because it may correct for deficient production of high-quality product by the industry in the absence of a MQS. However, we show that any MQS imposed v...

this study used quantifying factors affecting desertification based on the iranian model of desertification potentialassessment (imdpa) to assess the current status of desertification in bordekhun region, iran. bordekhun region has anarea of 214.11 km2 and is located near the city of daiyer in boushehr province. first, a working unit map of the regionwas selected as the basic map for evaluation...

This study aimed at empirically clarifying the similarities and differences between transformational, transactional, and charismatic leadership. More specifically, the convergent, divergent, and criterion validity of two instruments, the Multifactor Leadership Questionnaire (MLQ-5X) and the Conger and Kanungo Scales (CKS), was explored. It was found that transformational and charismatic leaders...

Purpose – The paper introduces a self-assessment software tool for managers. The design of this instrument is based on the EFQM Excellence Model. Methodology/approach The methodology determines an overall index, considering the level of fulfillment of each criterion and the “visible” and “invisible” influences between criteria and subcriteria. Findings – The designed tool allows highlighting En...

We compare emission cap commitment that restricts total emissions and emission intensity commitment that restricts emissions per unit of output as measures of self-regulation. The monopolist chooses either emission cap commitment or emission intensity commitment and sets the target level under the constraint that the resulting emissions do not exceed the upper limit. We find that profit-maximiz...