The aim of a multi-mode resource-constrained project scheduling problem (MRCPSP) is to assign resource(s) with the restricted capacity to an execution mode of activities by considering relationship constraints, to achieve pre-determined objective(s). These goals vary with managers or decision makers of any organization who should determine suitable objective(s) considering organization strategi...

Production scheduling in underground mines is still a manual process, and achieving a truly optimal result through manual scheduling is impossible due to the complexity of the scheduling problems. Among the underground mining methods, sub-level caving is a common mining method with a high production rate for hard rock mining. There are limited studies about long-term production scheduling...

Abstract We use high-quality UK panel data to document the extent that pre-existing labour market and financial inequalities were exacerbated by pandemic between April 2020 September 2021. Some worsened, others did not, in some cases, initial widening of was subsequently reversed. find no evidence an overall divergence outcomes gender. Initial changes for ethnic minorities young largely reverse...

due to the importance of supplier selection issue in supply chain management (scm) and ,also,  the increasing tendency of organizations to their social responsibilities, in this paper, we survey the supplier selection issue as a multi objective problem while considering the factor of corporate social responsibility (csr) as a mathematical parameter. the purpose of this paper is to design a mode...

this paper, in its first part, analyzes the status and history of the principle of “maximization of the good” and the different meanings of “maximization” and “good.” after explaining and analyzing this principle and its different interpretations, in the first part, this paper, in its second part, categorizes rawls’s criticisms on it, step by step, by extracting and mentioning their premises. i...

Due to the importance of supplier selection issue in supply chain management (SCM) and ,also,  the increasing tendency of organizations to their social responsibilities, In this paper, we survey the supplier selection issue as a multi objective problem while considering the factor of corporate social responsibility (CSR) as a mathematical parameter. The purpose of this paper is to design a mode...

In this paper we present a new technique to compute non-dominated solutions, with an error that can be made as low as the user wants, in multiple objective linear fractional programming (MOLFP), using reference points. The basic idea is to divide, by the approximate ‘middle’, the non-dominate region in two sub-regions and to analyze each of them in order to try to discard one. The process is re...