Research Paper Scheduling
1. Modeling and Scheduling University Course Timetabling Problems

B. Naderi

Volume 5, 1(4) , Autumn 2016, Pages 1-15

http://dx.doi.org/10.22105/riej.2017.49167

Abstract
  This paper considers the problem of university course timetabling. In this problem, there are a set of courses, lecturers and classrooms. The objective is to assign schedule courses so as to maximize the total preference of lecturer-course, lecturer-day and course-day. The paper first formulates the ...  Read More

Research Paper Inventory, logistics, and transportation
2. Solving a Bi-Objective Transportation Vehicle Routing Problem for Waste Collection by a New Hybrid Algorithm

H. Farrokhi-Asl; R. Tavakkoli-Moghaddam

Volume 5, 1(4) , Autumn 2016, Pages 16-42

http://dx.doi.org/10.22105/riej.2017.49168

Abstract
  This paper is an extension of the well-known vehicle routing problem (VRP) consisting of two stages. The first and second stages deal with the vehicle routing and transportation problems, respectively. Waste collection is one of the applications of the considered problem in a real world situation. A ...  Read More

Research Paper Data Envelopment Analysis, DEA
3. The Methods of Ranking based Super Efficiency

M. Nayebi; F Hosseinzadeh Lotfi

Volume 5, 1(4) , Autumn 2016, Pages 43-66

http://dx.doi.org/10.22105/riej.2017.49169

Abstract
  The science of Data Envelopment Analysis (DEA) evaluates the effectiveness of decision making units. But, one of the problems of Data Envelopment Analysis (DEA) is that, if the number of units with the same efficiency equal to one was more than one, then we couldn’t select the best between them. ...  Read More