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      • Open Access Article

        1 - A New Method to computational intelligence to improve network lifetime in wireless sensor networks
        faezeh talebian hassan khotanloo mansour esmaeilpour
        Recent advances in wireless electronic and communications provide us the ability to build small, economical sensors with low power consumption and many diverse applications. Limited energy capacity of sensors is a huge challenge that will affect these networks. Clusteri More
        Recent advances in wireless electronic and communications provide us the ability to build small, economical sensors with low power consumption and many diverse applications. Limited energy capacity of sensors is a huge challenge that will affect these networks. Clustering has been used as a well-known method to handle this challenge. To find appropriate location of clusters' heads, imperialist competitive algorithm as an emerging topic in computational intelligence has been used. Clusters' heads are connected in a three-level model so that cluster heads with low energy capacity and far from station are considered as level three indirectly communicating with base station. This eventually increases lifetime of wireless sensor networks. Manuscript profile
      • Open Access Article

        2 - Modified orthogonal chaotic colonial competition algorithm and its application in improving pattern recognition in multilayer perceptron neural network
        Payman Moallem mehrdad sadeghi hariri MAHDI hashemi
        Despite the success of the Colonial Competition Algorithm (ICA) in solving optimization problems, this algorithm still suffers from repeated entrapment in the local minimum and low convergence speed. In this paper, a new version of this algorithm, called Modified Orthog More
        Despite the success of the Colonial Competition Algorithm (ICA) in solving optimization problems, this algorithm still suffers from repeated entrapment in the local minimum and low convergence speed. In this paper, a new version of this algorithm, called Modified Orthogonal Chaotic Colonial Competition (COICA), is proposed. In the policy of absorbing the proposed version, each colony seeks the space to move towards the colonizer through the definition of a new orthogonal vector. Also, the possibility of selecting powerful empires is defined through the boltzmann distribution function, and the selection operation is performed through the roulette wheel method. The proposed multilevel perceptron neural network (MLP) algorithm is used to classify standard datasets, including ionosphere and sonar. To evaluate the performance of this algorithm and to evaluate the generalizability of the trained neural network with the proposed version, the K-Fold cross-validation method has been used. The results obtained from the simulations confirm the reduction of network training error as well as the improved generalizability of the proposed algorithm. Manuscript profile
      • Open Access Article

        3 - Presenting a method based on computational intelligence to improve energy consumption in smart wireless sensor networks
        faezeh talebian حسن  ختن¬لو منصور  اسماعیل¬پور
        Recent advances in the field of electronics and wireless communication have given the ability to design and manufacture sensors with low power consumption, small size, reasonable price and various uses. The limited energy capacity of sensors is a major challenge that af More
        Recent advances in the field of electronics and wireless communication have given the ability to design and manufacture sensors with low power consumption, small size, reasonable price and various uses. The limited energy capacity of sensors is a major challenge that affects these networks. Clustering is used as one of the well-known methods to manage this challenge. To find the suitable location of the cluster heads, the colonial competition algorithm, which is one of the branches of computational intelligence, has been used. Cluster heads are connected by a three-level model, so that cluster heads with low energy capacity and far from the station are known as the third level and exchange information indirectly with the base station. This increases the lifespan of wireless sensor networks Manuscript profile
      • Open Access Article

        4 - context-aware travel recommender system exploiting from Geo-tagged photos
        rezvan mohamadrezaei larki Reza Ravanmehr milad  amrolahi
        Recommender systems are the systems that help users find and select their target items. Most of the available events for recommender systems are focused on recommending the most relevant items to the users and do not include any context information such as time, locatio More
        Recommender systems are the systems that help users find and select their target items. Most of the available events for recommender systems are focused on recommending the most relevant items to the users and do not include any context information such as time, location . This paper is presented by the use of geographically tagged photo information which is highly accurate. The distinction point between this thesis and other similar articles is that this paper includes more context (weather conditions, users’ mental status, traffic level, etc.) than similar articles which include only time and location as context. This has brought the users close to each other in a cluster and has led to an increase in the accuracy. The proposed method merges the Colonial Competitive Algorithm and fuzzy clustering for a better and stronger processing against using merely the classic clustering and this has increased the accuracy of the recommendations. Flickr dataset is used to evaluate the presented method. Results of the evaluation indicate that the proposed method can provide location recommendations proportionate to the users’ preferences and their current visiting location. Manuscript profile
      • Open Access Article

        5 - Improving imperialist competitive algorithm for solving the nodes placement problem in three-dimensional grid wireless sensor networks
        Sayed Wafa Barkhoda Hemmat Sheikhi sudabeh mohammadi
        One of the basic and important research fields in wireless sensor networks is how to place sensor nodes where by using minimum number of sensor nodes all target points are covered and all sensor nodes are connected to the sink. In this paper, a novel method based on imp More
        One of the basic and important research fields in wireless sensor networks is how to place sensor nodes where by using minimum number of sensor nodes all target points are covered and all sensor nodes are connected to the sink. In this paper, a novel method based on imperialist competitive algorithm is used for solving the mentioned problem. In the proposed method, a colony can immigrate from a weak empire to more powerful empire. The idea of immigration is inspired from human society in which a human can emigrate from a country to another country. The network is supposed to be a three-dimensional grid network and the sensor nodes can be only placed at cross-points of the grids while the target points can be deployed at each point of three-dimensional space. The simulation results show that the proposed method uses fewer number of sensor nodes than other similar algorithms and has the less running time. Manuscript profile
      • Open Access Article

        6 - Permeability estimation using petrophysical logs and artificial intelligence methods: A case study in the Asmari reservoir of Ahvaz oil field
        Abouzar Mohsenipour Bahman Soleimani iman Zahmatkesh Iman  Veisi
        Permeability is one of the most important petrophysical parameters that play a key role in the discussion of production and development of hydrocarbon fields. In this study, first, the magnetic resonance log in Asmari reservoir was evaluated and permeability was calcula More
        Permeability is one of the most important petrophysical parameters that play a key role in the discussion of production and development of hydrocarbon fields. In this study, first, the magnetic resonance log in Asmari reservoir was evaluated and permeability was calculated using two conventional methods, free fluid model (Coates) and Schlumberger model or mean T2 (SDR). Then, by constructing a simple model of artificial neural network and also combining it with Imperialist competition optimization (ANN-ICA) and particle swarm (ANN-PSO) algorithms, the permeability was estimated. Finally, the results were compared by comparing the estimated COATES permeability and SDR permeability with the actual value, and the estimation accuracy was compared in terms of total squared error and correlation coefficient. The results of this study showed an increase in the accuracy of permeability estimation using a combination of optimization algorithms with artificial neural network. The results of this method can be used as a powerful method to obtain other petrophysical parameters. Manuscript profile
      • Open Access Article

        7 - Analysis of the Long Story "Parandeh dar Baad (Bird in the Wind)"From the Perspective of Nativism
        mehdi  ebrahimi lame saber emami seyed mohsen hashemi
        Localism is a modern term that emerged in the process of independence and liberation of the eastern colonized countries from the domination of the western colonialist countries and at the same time entered various fields including fiction.In this context, the analysis o More
        Localism is a modern term that emerged in the process of independence and liberation of the eastern colonized countries from the domination of the western colonialist countries and at the same time entered various fields including fiction.In this context, the analysis of fictional works has special importance as one of the most important sources of nativism; because on the one hand it is connected with various social concepts and on the other hand it leads to our understanding of the components of nativism and how to use them in the text. In this regard, this article with the descriptive and analytical method, analyzes the components of nativism in the book "Parandeh dar Baad (Bird in the Wind) ". In this way, first the primary data was collected through documentary study and then it was analyzed in the framework of the definition of nativism and the components of Iranian identity. The results of the research showed that the author highlighted the components of Iranian identity in this book, namely: language, culture, religion, history and geography of the land, as well as foreign-oriented aspects. Manuscript profile