Institution
Qazvin Islamic Azad University
Education•Qazvin, Iran•
About: Qazvin Islamic Azad University is a education organization based out in Qazvin, Iran. It is known for research contribution in the topics: Fuzzy logic & Metaheuristic. The organization has 485 authors who have published 507 publications receiving 5762 citations. The organization is also known as: Qazvin Azad University.
Topics: Fuzzy logic, Metaheuristic, Particle swarm optimization, Imperialist competitive algorithm, Genetic algorithm
Papers published on a yearly basis
Papers
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TL;DR: In this paper, the authors proposed a method to solve the problem of unstructured data in the form of a set of graph-based models.Article history: Received January 14, 2014 Accepted 10 June 2014 Available online June 2
Abstract: Article history: Received January 14, 2014 Accepted 10 June 2014 Available online June 2
517 citations
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TL;DR: An artificial immune algorithm (AIA) based on integrated approach is proposed to solve the flexible job-shop scheduling problem (FJSP) to minimize makespan and the computational results validate the quality of the proposed approach.
241 citations
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TL;DR: The results of several experimental, statistical analysis and key sensitivity tests show that the proposed image encryption scheme provides an efficient and secure way for real-time image encryption and transmission.
Abstract: Image encryption is somehow different from text encryption due to some inherent features of image such as bulk data capacity and high correlation among pixels, which are generally difficult to handle by conventional methods. The desirable cryptographic properties of the chaotic maps such as sensitivity to initial conditions and random-like behavior have attracted the attention of cryptographers to develop new encryption algorithms. Therefore, recent researches of image encryption algorithms have been increasingly based on chaotic systems, though the drawbacks of small key space and weak security in one-dimensional chaotic cryptosystems are obvious. This paper proposes a Coupled Nonlinear Chaotic Map, called CNCM, and a novel chaos-based image encryption algorithm to encrypt color images by using CNCM. The chaotic cryptography technique which used in this paper is a symmetric key cryptography with a stream cipher structure. In order to increase the security of the proposed algorithm, 240 bit-long secret key is used to generate the initial conditions and parameters of the chaotic map by making some algebraic transformations to the key. These transformations as well as the nonlinearity and coupling structure of the CNCM have enhanced the cryptosystem security. For getting higher security and higher complexity, the current paper employs the image size and color components to cryptosystem, thereby significantly increasing the resistance to known/chosen-plaintext attacks. The results of several experimental, statistical analysis and key sensitivity tests show that the proposed image encryption scheme provides an efficient and secure way for real-time image encryption and transmission.
216 citations
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TL;DR: A parallel variable neighborhood search (PVNS) algorithm that solves the FJSP to minimize makespan time and uses various neighborhood structures which carry the responsibility of making changes in assignment and sequencing of operations for generating neighboring solutions.
Abstract: Flexible job-shop scheduling problem (FJSP) is an extension of the classical job-shop scheduling problem. FJSP is NP-hard and mainly presents two difficulties. The first one is to assign each operation to a machine out of a set of capable machines, and the second one deals with sequencing the assigned operations on the machines. This paper proposes a parallel variable neighborhood search (PVNS) algorithm that solves the FJSP to minimize makespan time. Parallelization in this algorithm is based on the application of multiple independent searches increasing the exploration in the search space. The proposed PVNS uses various neighborhood structures which carry the responsibility of making changes in assignment and sequencing of operations for generating neighboring solutions. The results obtained from the computational study have shown that the proposed algorithm is a viable and effective approach for the FJSP.
207 citations
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TL;DR: A novel hybrid approach based on the fuzzy logic is implemented to address the sustainable supplier selection problem and Weighted Goal Programming (WGP) method is used to deal with multi-objectiveness.
206 citations
Authors
Showing all 493 results
Name | H-index | Papers | Citations |
---|---|---|---|
Behnam Vahdani | 41 | 132 | 3911 |
Karim Faez | 36 | 387 | 5135 |
Mohammad Saidi-Mehrabad | 23 | 92 | 1950 |
Abolfazl Toroghi Haghighat | 20 | 126 | 1311 |
Roya Soltani | 19 | 53 | 900 |
Shahab Dehghan | 19 | 49 | 1169 |
Amir Abbas Najafi | 18 | 84 | 1133 |
Mehdi Yazdani | 16 | 41 | 971 |
Reza Kiani Mavi | 16 | 59 | 1021 |
Ehsan Hashemi | 16 | 68 | 635 |
Maani Ghaffari Jadidi | 15 | 36 | 578 |
Seyed Habib A. Rahmati | 14 | 24 | 877 |
Maziar Ahmad Sharbafi | 14 | 67 | 687 |
Fariborz Mahmoudi | 13 | 58 | 632 |
Javad Sadeghi | 13 | 22 | 697 |