Institution
Amirkabir University of Technology
Education•Tehran, Iran•
About: Amirkabir University of Technology is a education organization based out in Tehran, Iran. It is known for research contribution in the topics: Nonlinear system & Fuzzy logic. The organization has 15254 authors who have published 31165 publications receiving 487551 citations. The organization is also known as: Tehran Polytechnic & Tehran Polytechnic University.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: In this paper a portfolio selection model which is based on Markowitz's portfolio selection problem including three of the most important limitations is considered and the results can lead Markowitz’s model to a more practical one.
Abstract: Heuristic algorithms strengthen researchers to solve more complex and combinatorial problems in a reasonable time. Markowitz's Mean-Variance portfolio selection model is one of those aforesaid problems. Actually, Markowitz's model is a nonlinear (quadratic) programming problem which has been solved by a variety of heuristic and non-heuristic techniques. In this paper a portfolio selection model which is based on Markowitz's portfolio selection problem including three of the most important limitations is considered. The results can lead Markowitz's model to a more practical one. Minimum transaction lots, cardinality constraints (both of which have been presented before in other researches) and market (sector) capitalization (which is proposed in this research for the first time as a constraint for Markowitz model), are considered in extended model. No study has ever proposed and solved this expanded model. To solve this mixed-integer nonlinear programming (NP-Hard), a corresponding genetic algorithm (GA) is utilized. Computational study is performed in two main parts; first, verifying and validating proposed GA and second, studying the applicability of presented model using large scale problems.
199 citations
••
TL;DR: In this paper, a multi-depot location-routing model considering network failure, multiple uses of vehicles, and standard relief time is proposed to determine the locations of local depots and routing for last mile distribution after an earthquake.
Abstract: We propose a multi-depot location-routing model considering network failure, multiple uses of vehicles, and standard relief time. The model determines the locations of local depots and routing for last mile distribution after an earthquake. The model is extended to a two-stage stochastic program with random travel time to ascertain the locations of distribution centers. Small instances have been solved to optimality in GAMS. A variable neighborhood search algorithm is devised to solve the deterministic model. Computational results of our case study show that the unsatisfied demands can be significantly reduced at the cost of higher number of local depots and vehicles.
199 citations
••
TL;DR: In this paper, a geochemical anomaly separation using the concentration-area (C-A) method at Kahang (Gor Gor) porphyry system in Central Iran is studied.
198 citations
••
TL;DR: The pH variations in the body at the organ level, tissue level, and cellular level are correlated with the intrinsic properties of pH‐responsive polymers, which could help to select more effective (‘smart’) polymeric systems based on the biological target.
198 citations
••
TL;DR: This paper considers vertical co-op advertising along with pricing decisions in a supply chain where demand is influenced by both price and advertisement and the feasibility of bargaining game is discussed in a bid to determine a scheme to share the extra joint profit.
198 citations
Authors
Showing all 15352 results
Name | H-index | Papers | Citations |
---|---|---|---|
Ali Mohammadi | 106 | 1149 | 54596 |
Mehdi Dehghan | 83 | 875 | 29225 |
Morteza Mahmoudi | 83 | 334 | 26229 |
Gaurav Sharma | 82 | 1244 | 31482 |
Vladimir A. Rakov | 67 | 459 | 14918 |
Mohammad Reza Ganjali | 65 | 1039 | 25238 |
Bahram Ramezanzadeh | 62 | 352 | 12946 |
Muhammad Sahimi | 62 | 481 | 17334 |
Niyaz Mohammad Mahmoodi | 61 | 218 | 10080 |
Amir A. Zadpoor | 61 | 294 | 11653 |
Mohammad Hossein Ahmadi | 60 | 477 | 11659 |
Goodarz Ahmadi | 60 | 778 | 17735 |
Maryam Kavousi | 59 | 258 | 22009 |
Keith W. Hipel | 58 | 543 | 14045 |
Danial Jahed Armaghani | 55 | 212 | 8400 |