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      • Open Access Article

        1 - The Geo-discourse of Takfiri IS group and its Media Representation- with emphasis on digital media
               
        This essay would explore the media dimension of operations of takfiri-terrorist IS group. To do so we will study the discourse making process of IS throughout virtual space and Virtual Networks. This article argues that establishing a discoursive system and articulating More
        This essay would explore the media dimension of operations of takfiri-terrorist IS group. To do so we will study the discourse making process of IS throughout virtual space and Virtual Networks. This article argues that establishing a discoursive system and articulating ideational concepts that construct the positions of Self and Other and give them a hegemonic status is possible via virtual networks and with enjoying of media ploys. In this regard the main question of this essay is about the evaluation of the level of efficacy of these media arenas for IS and assesing the opportunities or by contrast the threats offered by them for IS’s activism. Our hypothesis is that virtual space is useful for IS and this group thanks to a professional approach to social networks and knowing the function of media, can establish a media terrorism by psychological operation and therefore complete its geopolitics actions. Manuscript profile
      • Open Access Article

        2 - Particular Absolutes in Rorty's Thought
        Mohammadreza Tajik
        Western epistemology, particularly representationalist epistemology, is the basic conviction behind Rorty's critical attacks. Rorty's pragmatic approach aims to find explanations for political and ethical viwes of contemporary West. Such an approach is deeply rooted in More
        Western epistemology, particularly representationalist epistemology, is the basic conviction behind Rorty's critical attacks. Rorty's pragmatic approach aims to find explanations for political and ethical viwes of contemporary West. Such an approach is deeply rooted in teachings of linguistics, and descriptive approaches toward the formation of human’s understanding of entities. But in an atmosphere of theories, can Rorty be able to avoid meta-theoretical damages on the one hand, and normative views in the field of science, on the other hand? Manuscript profile
      • Open Access Article

        3 - Television and National Identity: Representation of Historical and Political Features of National Identity in The ‘A’ grade Historical Serials on Television during Three Decades after the Islamic Revelation of Iran
        Mansour  Sa'i
        The main objective of the present article is to study the frequency and ways of representing features of national identity in A grade historical serials on television during the three decades after the Islamic Revolution (1359-1388). 15 ‘A’ grade historical serials, out More
        The main objective of the present article is to study the frequency and ways of representing features of national identity in A grade historical serials on television during the three decades after the Islamic Revolution (1359-1388). 15 ‘A’ grade historical serials, out of 50, produced and broadcasted through channels One and Two during the last three decades (5 serials per decade) were analised. The findings of the study shows that under the influence of media and culture policies, the representation of features of national identity has got an ideological status. Linguistic and imagery construction of TV in representing historical and political dimensions is based on creating a negative picture of Iranian historical and political heritage, neglecting national symbols such as national flag and anthem, and taking positive attitude towards historical figures of religious status. Manuscript profile
      • Open Access Article

        4 - Recognition of the area and elements of Isfahan’s Lonban neighborhood in the Qajar period
        Mahsa Payedar Mohsen Afshary
        Life in the traditional cities of Iran until the end of the Qajar period was organized in the form of a neighborhood, which suffered a physical and functional rupture following the urban development of the Pahlavi period. Over time, changing the lifestyle and accelerati More
        Life in the traditional cities of Iran until the end of the Qajar period was organized in the form of a neighborhood, which suffered a physical and functional rupture following the urban development of the Pahlavi period. Over time, changing the lifestyle and accelerating its process caused semantic changes, isolation and destruction of neighborhood structures from the collective memory of citizens. Since the neighborhood is the bedrock of current life in the old city and the most important residential scale, it is important to study its structure and key elements. However, not much research has been done on the structure of neighborhoods in Isfahan during the Qajar period and in order to identify each neighborhood from the perspective of architectural history studies. In this regard, Lonban neighborhood, which is one of the oldest and largest neighborhoods in Isfahan and located in the western part of the city will be studied in the mentioned period. The purpose of this recognition is to examine and map the historical background of one of the most important historical cities of Iran. The present research has been done by historical-interpretive method and using valid written historical sources. Historical data from which the existence of the neighborhood originated or was important to local people were compiled and extracted as key components from various sources, including maps, travelogues, historiographies, etc., and with different perspectives on the five categories of natural, historical, economic and occupational, demographic, and physical characteristics were explained. Finally, using the studies and matching with Seyyed Reza Khan’s map, the area of this neighborhood in the city of Qajar period was redrawn and the key elements in this neighborhood were identified and their positioning was done. These studies are not only valuable in terms of urban historiography, but as a structure derived from human behaviors and activities over a long period of time and in accordance with their natural environment, it is essential for the process of improving the quality of today’s cities. Manuscript profile
      • Open Access Article

        5 - A Self-Learning Single Image Super-Resolution by Considering Consistency in Adjacent Pixels
        M. Habibi A. Ahmadyfard H. hassanpour
        In this paper, we propose a self-learning single image super-resolution. In our proposed method, adjacent pixels information in smooth area is used. Low and high-resolution pyramids are built by applying up-sampling and down-sampling techniques on input image, as traini More
        In this paper, we propose a self-learning single image super-resolution. In our proposed method, adjacent pixels information in smooth area is used. Low and high-resolution pyramids are built by applying up-sampling and down-sampling techniques on input image, as training data. In training phase, we apply support vector regression (SVR) to model the relationship between the pair of low and high-resolution images. For each patch in the low-resolution image, sparse representation is extracted as a feature vector. In this paper, in order to reduce the edge blurring effects, we first separate edge pixels from non-edge pixels. In the smooth area, because of the similar colors around the each pixel, the center pixel value is determined by considering the reconstructed adjacent pixels. Experimental results show that the proposed method is quantitatively and qualitatively outperform the competitive super-resolution approaches. Manuscript profile
      • Open Access Article

        6 - Visual Distractors Detecting in Images Using Weighted Two Phase Test Sample Sparse Representation Method
        F. Sabouri F. yaghmaee
        The image observer usually wants to receive the message and the main subject of the image in the shortest time. Hence, assuming there is useful information in the salient regions, the human vision system unconsciously guides visual attention towards them. This assumptio More
        The image observer usually wants to receive the message and the main subject of the image in the shortest time. Hence, assuming there is useful information in the salient regions, the human vision system unconsciously guides visual attention towards them. This assumption is not always correct in practice, and in some cases, salient regions merely cause visual distractions. Therefore, in different applications, a mechanism is needed to identify these regions. To prevent from distracting observer’s attention from the main subject, these regions are eliminated. Furthermore, neglecting these regions could be of considerable assistance to the methods that function base on salient regions recognition. So, in this paper, Based on the methods of the class imbalance challenge each segment of training images in the dataset is a partition to 9 classes according to the relevant mask in the dataset, that the number of each class is proportional to its disturbance intensity. Then, segment-based features are extracted and determining the class of each segment is determined according to WTPTSSR method, which is based on the Sparse Coding and Representation system.Finally, in order to precisely analyzing the proposed method and comparing it to other approaches, four analysis criteria with different performances are presented. According to results, despite being time-consuming, the proposed method has a higher accuracy than the previous ones. Manuscript profile
      • Open Access Article

        7 - Freedom, authenticity, intimacy and charm: Representation of travel influencers’ photos in Instagram
        hoda davari hamed bakhshi
        Created on a social network basis, Instagram pages effectively contribute to shaping our mental perception regarding various topics. On the other hand, those Instagram pages dedicated to travel have highly been welcomed by viewers in recent years. Actually, the represen More
        Created on a social network basis, Instagram pages effectively contribute to shaping our mental perception regarding various topics. On the other hand, those Instagram pages dedicated to travel have highly been welcomed by viewers in recent years. Actually, the representations made by the relevant influences concerning the travel process, travel destination, and travel meaning construct some explicit and implicit meanings. Therefore, this study sought to identify the semantic system governing the popular Instagram pages of travel influencers. The conceptual framework of the study is based on John Fisk's semiotic approach and his social reality codes, including social reality, representational reality, and ideological reality. Social reality codes address physical characteristics such as speech, environment, and clothing. Moreover, representational reality codes deal with the sender's creative power, including framing, colors, companionship and substitution, and characterization. Finally, ideological reality codes examine the concept that gives coherence to such categories. The findings of the study indicated that naturalism, intimacy, liberation in social relations and individual lifestyle, availability and ease of travel, charm-seeking, desire for freedom, travel as a lifestyle, and responsible travel are the pivotal values represented by travel influencers at the level of ideological codes, representing such a special type of tourism that seeks changes in daily routines, acquisition of new experiences, the quest for authenticity, and returning to the true self. This travel style represents a conscious or non-conscious effort against the homogenization of the modern world and a kind of resistance against daily routines, rationalization, and social order. Manuscript profile
      • Open Access Article

        8 - Semiotics of Popular Social Documentaries of Aparat program BBC Persian Network
        azam deh soufiyani
        Today, media is an integral part of people's lives. People are interested in hearing and seeing social issues through the media in order to be aware of the dangers that threaten their lives. Social documentaries are an opportunity to inform and raise awareness about soc More
        Today, media is an integral part of people's lives. People are interested in hearing and seeing social issues through the media in order to be aware of the dangers that threaten their lives. Social documentaries are an opportunity to inform and raise awareness about social issues, and on the other hand, they provide an arena for showing the country's issues and problems in foreign media. The main question in the current research is, what image of Iran is represented in documentaries about Iran does the BBC Persian program broadcast? Social semiotics method and the "Idema" approach applied as the research method three films "And the Spider Came", "Iranian Kidney Auction" and "It's always late for freedom" were analyzed. According to the findings, the main topics of the documentary films of the Aparat program about Iran are women and children with the theme of absolute inferiority; Religion as the cause of society's problems and combined with superstitions; Inefficient and weak government institutions; culture and customs express a very traditional and petrified society. The discourse of opposition and confrontation with the Islamic Republic in this network, not only in news and analytical programs but also continues in the form of a completely believable narrative documentaries. Manuscript profile
      • Open Access Article

        9 - Survey on the Applications of the Graph Theory in the Information Retrieval
        Maryam Piroozmand Amir Hosein Keyhanipour Ali Moeini
        Due to its power in modeling complex relations between entities, graph theory has been widely used in dealing with real-world problems. On the other hand, information retrieval has emerged as one of the major problems in the area of algorithms and computation. As graph- More
        Due to its power in modeling complex relations between entities, graph theory has been widely used in dealing with real-world problems. On the other hand, information retrieval has emerged as one of the major problems in the area of algorithms and computation. As graph-based information retrieval algorithms have shown to be efficient and effective, this paper aims to provide an analytical review of these algorithms and propose a categorization of them. Briefly speaking, graph-based information retrieval algorithms might be divided into three major classes: the first category includes those algorithms which use a graph representation of the corresponding dataset within the information retrieval process. The second category contains semantic retrieval algorithms which utilize the graph theory. The third category is associated with the application of the graph theory in the learning to rank problem. The set of reviewed research works is analyzed based on both the frequency as well as the publication time. As an interesting finding of this review is that the third category is a relatively hot research topic in which a limited number of recent research works are conducted. Manuscript profile
      • Open Access Article

        10 - Survey on the Applications of the Graph Theory in the Information Retrieval
        Maryam Piroozmand Amir Hosein Keyhanipour Ali Moeini
        Due to its power in modeling complex relations between entities, graph theory has been widely used in dealing with real-world problems. On the other hand, information retrieval has emerged as one of the major problems in the area of algorithms and computation. As graph- More
        Due to its power in modeling complex relations between entities, graph theory has been widely used in dealing with real-world problems. On the other hand, information retrieval has emerged as one of the major problems in the area of algorithms and computation. As graph-based information retrieval algorithms have shown to be efficient and effective, this paper aims to provide an analytical review of these algorithms and propose a categorization of them. Briefly speaking, graph-based information retrieval algorithms might be divided into three major classes: the first category includes those algorithms which use a graph representation of the corresponding dataset within the information retrieval process. The second category contains semantic retrieval algorithms which utilize the graph theory. The third category is associated with the application of the graph theory in the learning to rank problem. The set of reviewed research works is analyzed based on both the frequency as well as the publication time. As an interesting finding of this review is that the third category is a relatively hot research topic in which a limited number of recent research works are conducted. Manuscript profile