List of Articles Diversity

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  1 - Analysis and assessment of Diversity and Tolerance in the Political Thought of John Rawls
    ali alihoseini  
  This paper aims to examine the question of how we can respect multiculturalism and at the same time defend the rights of the individuals against ethnic minorities and cultural groups? In response to the question, we examined Rawls's strategy mentioned in his book of "po More

  This paper aims to examine the question of how we can respect multiculturalism and at the same time defend the rights of the individuals against ethnic minorities and cultural groups? In response to the question, we examined Rawls's strategy mentioned in his book of "political liberalism" emphasizing on the separation of rationality from reasonableness. But at the end it becomes clear that Rawls's definition of reasonableness is extremely strict and restrictive, and in spite of the distinguishing rationality and reasonableness can be a good basis for tolerance in multicultural societies, but this definition is highly detrimental to this goal. This research has exploited interpretive approach, conceptual analysis and critical assessment as the theoretical strategies and based on this fact, it deals with the issue of cultural diversity as a context of forming the subject introduction and also considering Rawls's theory of justice as background in which the idea of reasonableness and rationality was born and grown. Manuscript profile
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  2 - Investigation of birds' density and species diversity of Amir-Kelayeh international wetland during a 10-year period (2007-2016), based on winter census
  Hadi Pourmosa shaykhAlikelayeh Saeid  Naderi
  10.29252/.5.8.15
  Amir-Kelayeh international wetland is as one of the important wintering habitats for birds. In present study, the density and diversity of bird species (waterbird, wader and terrestrial bird dependent to the wetland) has been studied in Amir-Kelayeh international wetlan More

  Amir-Kelayeh international wetland is as one of the important wintering habitats for birds. In present study, the density and diversity of bird species (waterbird, wader and terrestrial bird dependent to the wetland) has been studied in Amir-Kelayeh international wetland based on the semi-winter birds census data, over a 10-year statistical period. During this ten-year period, the total number of 334776 birds from 46 different birds species was recorded in this wetland. Among the studied years, the highest number of 72188 birds in 2008 and the lowest number of 1877 birds in 2015 have been counted. In terms of quality and food items, this wetland and it's around paddy fields is a good refuge for the Anatidae and Rallidae family that with 64.86 and 50.06 percent of frequency depending on their diet, have the most abundant among the identified family. The biodiversity indexes showed a relatively high amounts, but with a declining trend, and also the index of species evenness indicated a stable trend during this 10-year period in Amir-Kelayeh Wetland. Considering the decreasing trend of biodiversity indexes in Amir-Kelayeh wetland in recent years, increasing the wetland ecological conservation through the management plans such as habitat structure conservation, and illegal hunting and pollution control is recommended. Manuscript profile
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  3 - A Novel Resource Allocation Algorithm for Heterogeneous Cooperative Cognitive Radio Networks
  Mehdi Ghamari Adian
  10.7508/jist.2017.18.008
  In cognitive radio networks (CRN), resources available for use are usually very limited. This is generally because of the tight constraints by which the CRN operate. Of all the constraints, the most critical one is the level of permissible interference to the primary us More

  In cognitive radio networks (CRN), resources available for use are usually very limited. This is generally because of the tight constraints by which the CRN operate. Of all the constraints, the most critical one is the level of permissible interference to the primary users (PUs). Attempts to mitigate the limiting effects of this constraint, thus achieving higher productivity is a current research focus and in this work, cooperative diversity is investigated as a promising solution for this problem. Cooperative diversity has the capability to achieve diversity gain for wireless networks. Thus, in this work, the possibility of and mechanism for achieving greater utility for the CRN when cooperative diversity is incorporated are studied carefully. To accomplish this, a resource allocation (RA) model is developed and analyzed for the heterogeneous, cooperative CRN. In the considered model, during cooperation, a best relay is selected to assist the secondary users (SUs) that have poor channel conditions. Overall, the cooperation makes it feasible for virtually all the SUs to improve their transmission rates while still causing minimal harm to the PUs. The results show a remarkable improvement in the RA performance of the CRN when cooperation is employed in contrast to when the CRN operates only by direct communication. Manuscript profile
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  4 - Low Complex Standard Conformable Transceiver based on Doppler Spread for DVB-T2 Systems
  Saeed Ghazi-Maghrebi Behnam Akbarian
  10.29252/jist.8.32.272
  This paper addresses a novel Alamouti space-frequency block decoding scheme with discontinuous Doppler diversity (DDoD) and cyclic delay diversity (CDD). We investigate different antenna diversity concepts, which can be applied to orthogonal frequency division multiplex More

  This paper addresses a novel Alamouti space-frequency block decoding scheme with discontinuous Doppler diversity (DDoD) and cyclic delay diversity (CDD). We investigate different antenna diversity concepts, which can be applied to orthogonal frequency division multiplexing (OFDM) systems over highly frequency selective channels. The main object of this research is standard compatibility and the effect of simple diversity techniques on the channel fading properties. Therefore, we analyze a receiver in terms of the effective channel transfer function, which leads to the possibility of optimizing diversity. Besides, a novel transceiver using DDoD is proposed, which increases the Doppler spread of the multipath fading channel without causing additional Intercarrier Interference (ICI). Moreover, an efficient Alamouti encoder and decoder based on CDD is proposed, which allows a high reliability and capacity enhancement. In order to evaluate the capability of that, we have implemented this scheme for the second-generation terrestrial video broadcasting (DVB-T2) system over different channels. Furthermore, mathematical analysis and simulation results show the bit error performance of the modified encoding method with these diversity techniques, performs mostly better than the other forms of encoding Alamouti over highly frequency-selective channels such as single frequency networks (SFN). The other advantages of the proposed method are simplicity, flexibility, and standard compatibility. Manuscript profile
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  5 - New Beamforming Algorithm for Cooperative Networks with Multiple Antenna Decode and Forward Relay
  Mohammad Mohammadi Amiri A. Olfat
  In this paper, a cooperative network consisting of one source, one relay, and one destination is considered. The source and the destination are both single-antenna systems, while the relay is equipped with N antennas and operates in decode-and-forward (DF) mode. We assu More

  In this paper, a cooperative network consisting of one source, one relay, and one destination is considered. The source and the destination are both single-antenna systems, while the relay is equipped with N antennas and operates in decode-and-forward (DF) mode. We assume that there is no direct link between the source and the destination. We propose two beamforming methods at the relay to transmit the data to the destination. Beamforming is performed at the relay by the assumption of having two bit quantized information about the phase of all links between the relay and the destination. We derive an upper bound on bit error probability of the system and show that the proposed scheme achieves full diversity order. Simulation results illustrate that performance of the system in terms of bit error probability is better than some well-known scenarios and is close to some scenarios with ideal assumptions. Manuscript profile
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  6 - Investigating Iranian Identity Based on Charles Taylor's Idea about Recognition and Its Implications for Education
  mostafa moradi khosrow Bagheri shahin Eirvani Babak shamshiri
  The issue of Iranian identity has always been one of the most challenging issues. Determining the common elements of Iranian identity is a matter of controversy, and the differences among different viewpoints will have consequences in practice. The present study has con More

  The issue of Iranian identity has always been one of the most challenging issues. Determining the common elements of Iranian identity is a matter of controversy, and the differences among different viewpoints will have consequences in practice. The present study has considered the issue of Iranian identity from an educational point of view. For this purpose, from among the various and multiple dimensions of Iranian identity, two important ones, namely language and religion, have been considered as pivotal. Explaining the views of Charles Taylor has provided us with a basis for analyzing the identity of Iranians and has led to indications in the field of education. Conceptual analysis and practical inference are used as research methods. Among the implications of this research are "diversifying education based on Iranian cultural and identity diversity", "convergent education based on the idea of recognition", and "deepening of social relations based on dialogue-oriented education”. Finally, based on the implications, some of the Iranian official documents in the field of formal education have been reviewed and evaluated. Manuscript profile