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Alayiaboozar E.,Iranian Research Institute for Information Science and Technology IranDoc | Bijankhan M.,University of Tehran
Iranian Journal of Information Processing Management | Year: 2016

Persian writing system deviates from the ideal one due to the lack of one-to-one correspondence between graphemes and phonemes. The present study deals with this question that in spite of the absence of short vowels in Persian writing system and one-to-many and many-toone relationships between the graphemes and phonemes, how can Persian speakers read out of vocabulary words? This study introduces a probabilistic-structural method that Persian speakers use to read out of vocabulary words in which structural information (including Persian morphology and morphophonemic rules) as well as Arabic morphological templates are considered. In order to test how the introduced method works, Persian speakers were asked to read a list out of vocabulary words. The mentioned list was used by ID3 and MLP (two methods which are used in machine learning) as input, then the outputs of the method and those of ID3 and MLP were compared with Persian speakers' pronunciations; the results proved that the introduced method functions similar to Persian speakers in reading out of vocabulary words. © 2016, Iranian Research Institute for Scientific Information and Documentation. All rights reserved.

Jamali H.R.,University of Tehran | Nikzad M.,Iranian Research Institute for Information Science and Technology IRANDOC
Scientometrics | Year: 2011

Title of an article can be descriptive, declarative or a question. It plays important role in both marketing and findability of article. We investigate the impact of the type of article titles on the number of citations and downloads articles receive. Number of downloads and citations for all articles published in six of PLoS (Public Library of Science) journals (2,172 articles) were obtained from PLoS and type of each article's title (including descriptive, indicative and question) was determined as well as the number of substantive words in title (title length). Statistical difference and correlation tests were carried out. The findings showed that differences exist between articles with different types of titles in terms of downloads and citations, especially articles with question titles tended to be downloaded more but cited less than the others. Articles with longer titles were downloaded slightly less than the articles with shorter titles. Titles with colon tended to be longer and receive fewer downloads and citations. As expected, number of downloads and citations were positively correlated. © 2011 Akadémiai Kiadó, Budapest, Hungary.

Nazari M.,Iranian Research Institute for Information Science and Technology IranDoc
Library and Information Science Research | Year: 2016

Although context has been identified as the key to the manifestation of information literacy (IL), little is known about the actual context of IL in disciplinary areas. This is because disciplinary studies of IL have focused mainly on people's conceptions of IL, not on their lived teaching and learning practices. Introducing university assignments as a contextual construct for disciplinary studies of IL, this study demonstrates how students' and educators' conceptions and experiences of real university assignments and their constructive participation in conceptualization of IL helped to uncover the actual nature of information need in the discipline of geographic information science/systems (GIS) and to gain a better understanding of the concept of, and requirements for, determining information need in this discipline. Adopting an embedded case study design and a participatory approach for fieldwork, the data were mainly gathered from 27 semistructured interviews focused on GIS students' and educators' lived experiences of university assignments and their reflections on various aspects of IL in a master's degree GIS program jointly delivered by universities in the UK and USA. Each learning and teaching experience was treated as a unit of analysis. GIS assignments were found to be geospatial, technology mediated, subject free, and unique in requirements. Each characteristic uncovered a new facet for the concept of information need in GIS. Findings indicate that unless students have understood the multi-faceted nature of information need, they may fail to distinguish the various ways in which gaps may be addressed when dealing with GIS assignments. The context-to-concept approach proposed in this study can be of value to both IL researchers and practitioners who seek deeper insights into the nature of IL, especially those interested in the customization of generic models of IL to the actual needs of university programs. © 2016 Elsevier Inc.

Montazer G.A.,Tarbiat Modares University | Montazer G.A.,Iranian Research Institute for Information Science and Technology IranDoc | Giveki D.,Iranian Research Institute for Information Science and Technology IranDoc
Neurocomputing | Year: 2015

Radial Basis Function Neural Networks (RBFNNs) have been widely used for classification and function approximation tasks. Hence, it is worthy to try improving and developing new learning algorithms for RBFNNs in order to get better results. This paper presents a new learning method for RBFNNs. An improved algorithm for center adjustment of RBFNNs and a novel algorithm for width determination have been proposed to optimize the efficiency of the Optimum Steepest Decent (OSD) algorithm. To initialize the radial basis function units more accurately, a modified approach based on Particle Swarm Optimization (PSO) is presented. The obtained results show fast convergence speed, better and same network response in fewer train data which states the generalization power of the improved neural network. The Improved PSO-OSD and Three-phased PSO-OSD algorithms have been tested on five benchmark problems and the results have been compared. Finally, using the improved radial basis function neural network we propose a new method for object image retrieval. The images to be retrieved are object images that can be divided into foreground and background. Experimental results show that the proposed method is really promising and achieves high performance. © 2015 Elsevier B.V.

Namdarian L.,Iranian Research Institute for Information Science and Technology IRANDOC
Iranian Journal of Information Processing Management | Year: 2016

Achieving the ultimate goals of policy-making will not be possible by using methods such as surveys. Evidence-based policy-making is a new approach in the public policy which has increased in many countries. Evidence-based policy-making is based on the assumption that decisions should be based on available evidence and rational analysis in addition to the judgments and opinions. One of the important evidences is statistics. Accurate statistics can promote the accuracy, quality and capacity of policy. According to the importance of the statistics for the evidence-based policy-making, this paper is seeking to examine the importance of the statistics for evidence-based policy-making and trying to show that the correct and efficient use of statistics leads to better policy. This paper uses mixed method for this purpose. Mixed method approach used in this paper is the sequential exploratory design that qualitative data followed by the quantitative data is collected and analysed. First, the comprehensive process framework for evidence-based policy-making is developed in the qualitative part by using meta-synthesis. Second, in the quantitative part, binomial test is used to validation of the developed framework. Data collection tool is a questionnaire and has been completed by 15 experts in the field of policy-making. Finally, the paper examines the role of information and statistics in the steps of proposed framework. © 2016, Iranian Research Institute for Scientific Information and Documentation. All rights reserved.

Nazari M.,Iranian Research Institute for Information Science and Technology IranDoc
Library and Information Science Research | Year: 2010

This study demonstrates how case study research can be used to do a contextual and inductive study of information literacy (IL) and develop robust models of IL. First, it identifies several key characteristics of case study research as a qualified research methodology for studies that aim to build theories. Second, it rationalizes a need for case study research in the field of IL research. Drawing on that, it demonstrates how Eisenhardt's case study process was adopted to conduct a contextual study of IL and discusses the researcher's activities and tasks in each phase of the process. It uses the researcher's experience of the research journey to justify the validity and robustness of the research. This article contributes to current IL research methodologies and can be of value for LIS researchers and practitioners who wish to holistically gain deep insight into phenomena through case study research. © 2010 Elsevier Inc.

Sedighi M.,Iranian Research Institute for Information Science and Technology IranDoc
Iranian Journal of Information Processing Management | Year: 2013

The aim of this research is to investigate the interdisciplinary relations in selected high priority areas of science and technology based on ISI data. This is an applied study using scientometric, citation analysis and network analysis methods. After identifying and extracting data from WOS, all citations of these records have been analyzed in order to determine the interdisciplinary relations and the evolution of these relationships. In order to judge the interdisciplinary of data, the results of the two approaches have been considered including 1-To determine the subject areas of the journals 2- To determine the institutional affiliation of the authors. There is a positive correlation between co-authorship and interdisciplinary approach in all studied areas. There is no significant relation between the number of citations and interdisciplinary approach. Mapping of interdisciplinary relationships in nanotechnology showed this is a unique method to discover the structural patterns of a research area.

Alipour-Hafezi M.,Iranian Research Institute for Information Science and Technology IRANDOC
Electronic Library | Year: 2014

Purpose - The main purpose of this article is to provide a focal framework with the aim of making integrated digital libraries in technical and content level of syntactic interoperability between digital libraries. Design/methodology/approach - Literature review, library research method and analytical approach were used in the first step of this research in order to design IDL framework. Then a survey of 11 Iranian digital library applications was conducted for testing the proposed framework. Finally, based on the findings, conceptual integration architecture was proposed based on the framework. Findings - Based on the literature a framework for integration of digital library applications in syntax level is proposed which includes four core layers: models, protocols, metadata formats, and context-based layer. Based on the findings of the survey, integration architecture is proposed which includes all the mentioned layers in the IDL framework. So as to decrease cost of installing the architecture, cloud base technology architecture introduced to be used inverse. Originality/value - A gap exists between research and practice in the field of integrated digital libraries. In fact this article is an attempt to cover this gap by proposing a framework that can be implemented. © Emerald Group Publishing Limited.

Khedmatgozar H.R.,Iranian Research Institute for Information Science and Technology IRANDOC | Alipour-Hafezi M.,Iranian Research Institute for Information Science and Technology IRANDOC
Journal of Digital Information Management | Year: 2015

In recent years, with the development of digital environment, one of the concepts that has been particularly important is digital identification of objects in this environment by digital identifier systems. The main objective of this study is to answer this important and basic question: How and on what framework can distinguish a digital object identifier system from other identifier systems? To achieve this goal, a comparative framework which consisted of 7 main characteristics of digital identifiers in three major domains (namely identifier features, digital coverage and comprehensiveness of scope) was proposed. Two major characteristics of the proposed framework are its inclusiveness and considering the differences between the uniqueness and persistency notions in general and in the digital environment. Then, an illustrative comparison of 23 well-known worldwide identifiers was carried out. Results of this study revealed that six identifier systems of DOI, Handle, UCI, ARK, URN and PURL can be regarded as the best choices of digital identifiers in public areas identified in the digital space and four identifier systems of ORCID, MIRIAM, ISNI and NBN are the best options to be used in certain specialized areas. These results can help information technology specialists to identify and effectively use of digital identifier systems in actual and potential practical areas. Digital identifier systems, Object, Digital Environment, Illustrative comparison.

Nazari M.,Iranian Research Institute for Information Science and Technology IranDoc | Webber S.,University of Sheffield
Journal of Documentation | Year: 2011

Purpose: The purpose of this paper is to report findings from an investigation into the conceptions and characteristics of geo/spatial information (GI) to demonstrate how exploring academics and students' conceptions of GI facilitated illumination of information literacy (IL) in the Geographic Information Science/Systems (GIS) discipline. Design/methodology/approach: Adopting an embedded exploratory case study, the data were gathered from semi-structured interviews, an open-ended questionnaire and students' reflection in an online distance learning (ODL) GIS programme. The data were analysed in light of the Grounded Theory approach. Drawing on the conceptions of GI which emerged from the study, this paper highlights several characteristics of GI and discusses their implications for IL. In particular, it compares the emergent IL competencies in the GIS discipline with those in the SCONUL model. Findings: GI was identified as geo/spatial, temporal, geo/spatially contextualised, and geo/spatially technology-mediated. According to these conceptions, GI is a constructive concept; it has multiple components which need various operations and user inputs to become geo/spatially meaningful and usable. These characteristics uncovered new aspects of IL in the GIS discipline which influence the depth and breadth of the SCONUL model. Research limitations/implications: Unlike exploratory studies of IL which focus on the IL and IL competencies to explore this phenomenon, the methodological approach taken in this study provides IL researchers with a new approach whose primary focus is on the concept of information as a key contextual element of IL. This helps one to gain a deeper insight into IL in disciplinary areas. Practical implications: The emergent aspects to the SCONUL model can be taken into consideration when designing and delivering IL programmes in the GIS discipline. Likewise, the emergent picture of IL in this study can be used by GIS educators to develop information-literate GIS learners. Originality/value: This study is original in terms of both its methodological approach and its outcomes. These can be of value to IL researchers, educators and practitioners. © Emerald Group Publishing Limited.

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