International Journal of Information Science and Management (IJISM)
Not a member yet
312 research outputs found
Sort by
A Low Cost Image Steganalysis by Using Domain Adaptation
Get PDFInformation hiding and data encryption are used widely to protect data and information from anonymous access. In digital world, hiding and encrypting of the desired data into an image is a smart way to protect information with a low cost. In the digital images, steganalysis is a known method to distinguish between clean and stego images. Most of recent researches in this scope exploit feature reduction algorithms to improve the performance of correct detections. However, dimension reduction alone could not tackle the problem of steganalysis because the properties of stego images change during the steganalysis process. In this work, it is intended to propose an Image Steganalysis using visual Domain Adaptation (ISDA), which this steganalysis target images to distinguish across stego and clean images. ISDA is a dimensionality reduction approach that considers the image drifts during the steganography process in the steganalysis of target images. Moreover, ISDA employs domain invariant clustering in an embedded representation to cluster clean and stego images in the reduced subspace. The results on benchmark datasets demonstrate that ISDA thoroughly outperforms all of the state of the art methods on validation parameters, accuracy of detection and time complexit
Direct and Indirect Influence of Altmetrics on Citation in Social Systems: Assessing a New Conceptual Model
Get PDFThis study aimed to assess the paths through which save metrics (on CiteULike, Mendeley, and Figshare) and discussion metrics (on Twitter, Facebook, and Wikipedia) influence citation. This descriptive-correlation study investigates the relationships between different variables based on its proposed conceptual model. Systematic and stratified sampling was employed and, using the Cochrane formula, the sample size was determined to be 1892 articles. Data were collected using the PLOS altmetrics, and path analysis was administered to test the conceptual model by using AMOS software. The results convey that Mendeley was the most effective path resulting to citation. Mendeley has a positive and significant relationship with citation via save as an intermediator. Twitter also had a negative and significant relationship with citation via discussion as an intermediating factor. Yet, neither save metrics on CiteULike and Figshare nor discussion on Facebook and Wikipedia does create a path of influence on citation. Identifying the effective paths through which social networks affect citation via altmetrics and presenting a final model of those paths could enrich and expand the theoretical foundations in the field of altmetrics. Besides identifying the most effective social networks and paths for online scientific interactions that lead to citation, the implications of this research can provide deeper insights for policy makers, editors and scholars
Developing a Comprehensive Standard Persian Positional Tagset
Get PDFOne of the primary tools used in text processing tasks such as information retrieval, text extraction, and text mining, is a corpus that is enhnaced by linguistic tags. In a corpus development effort, the role of a POS-tagger is to assign a linguistic tag to every textual token. POS annotation relies heavily on a tagset based on a linguistic theory. Text processing in Persian, too, follows this common practice. Several tagsets have been introduced, so far, to annotate Persian corpora. However, each tagset has followed a specific standard and linguistic theory. The resulting tagsets contain a limited number of tags, which renders them inadequate for a larger scope of research. This study is inspired by EAGLES, MULTEXT-East, positional tagset standards to produce a comprehensive standard positional tagset for Persian. The proposed tagset is also informed by the existing Persian tagsets. The proposed Persian Positional Tagset (PPT) is designed to be used for morphological, lexical, and syntactic annotations of Persian corpora.DOR: 98.1000/1726-8125.2018.16.165.0.1.68.11
Investigating the Relationship between Optimal Use of Knowledge and Intellectual Capital Management among Library Managers of Public Hospitals
Get PDFToday, the impact of intellectual capital is interesting for the scholars worldwide regarding the performance of the organizations, and knowledge comprises its primary core. Optimal use of knowledge contributes to explore needs of clients, leading to innovation and new valuable opportunities. Qualitatively improved services in the libraries of hospitals realizes through taking human capital and their optimal use of knowledge into consideration. The present study investigated the relationship between optimal use of knowledge and intellectual capital among library managers of public hospitals in Tehran. This study is a descriptive-correlation applied research holding all of the library managers of public hospitals in Tehran as the statistical population. The data collection was carried out via Bontis Intellectual Capital Questionnaire (2004) and Bukowitz & Williams Knowledge Management Questionnaire (1999). Cronbach's alpha was employed to measure the internal consistency reliability among the items and found at over 70%. To analyze the statistical data, the Pearson Correlation Test was used. The results showed that there were not any significant relationship between optimal use of knowledge and human resource capital and structural capital components (P>0.05). On the whole, between intellectual capital and optimal use of knowledge there is a significant relationship (P<0.05).The data analysis revealed that there is a positive and direct significant relationship with low intensity between optimal use of knowledge and intellectual capital among library managers of public hospitals in Tehran. In other words, the Foucault theory of power relation is confirme
On the Distribution of the H-index
Get PDFThe h-index has been considered in terms of both unrestricted integer partitions and fuzzy integrals, and the expected value of h for a given number of citations has been estimated. However, the distribution of h as a function of both the number of citations and the number of papers has not been considered explicitly. Using Durfee squares determined from restricted integer partitions, it is shown that for a small number of papers the expected value of h estimated from the unrestricted partitions of the number of citations is unreliable. Despite this, it is confirmed that the distribution of his asymptotically normal. This means that h-indices should be considered in the context of the number of publications unless that number is large.DOR: 98.1000/1726-8125.2018.16.15.0.1.79.12
Evaluating the Health Literacy Level among Diabetic Patients Referring to Shiraz Health Centers
Get PDFDiabetes is one of the main causes of death and around 4.5-5 million people suffer from it in Iran. Therefore, having information about this disease and self-care activities is essential. It seems that measuring the level of health literacy is important. This research aims to investigate the appropriateness of the available information and educational resources as well as the level of the health literacy of diabetic patients attending health centers in Shiraz (Iran).In this descriptive research, some available information resources were prioritized by diabetic patients, and educational planes were chosen to assess their appropriateness. The study population included 400 diabetic patients who were selected through stratified random sampling. Their level of health literacy was measured by TOFHLA questionnaire. The findings showed that 87.5% of the patients had regular doctor appointments as a resource for getting information; however the information given by the physicians are little and the level of the patients` health literacy is in marginal level. Marginal health literacy is a threat for diabetics whereas they need to have adequate knowledge and skills about controlling and improving their disease; thus, providing understandable information and educational materials for patients is expressed as a way to enhance their health literacy level. Based on their knowledge and skills hospital librarians, can work as health literacy educators in health centers and hospitals, and as role-players in promoting health literacy community.
OPEC countries: research performance across nations in Library and Information Science
Get PDFStudy analyses scientometric assessment of LIS research performance of OPEC member countries. The research publication data indexed in Scopus for the OPEC member countries were extracted and used for the analysis. The data are analyzed to identify quantitative research performance of OPEC member countries in terms of total documents, citable documents, and non-citable documents. The citation impact is measured by different parameters, like total citations, citations per document, Relative Citation Impact, self-citations, and self-citations per document. Finally, the quality of the document is assessed by means of h-index. Nigeria has been found to be most productive country in LIS research and Iran is receiving highest citations and also in h-index performance amongst OPEC member countries. Iraq, Libya, and Ecuador are far away in LIS research productivity and needs strong steps to improve LIS research productivity for future endeavor
Psychometric of the Self-Assessment Tool of Academic Researchers Knowledge Translation Activities
Get PDFNowadays, it is essential that researchers operationalize their research evidence with the help of knowledge brokers in proper communication with stakeholders and make such pieces of evidence applicable. The present study aims at psychometric of the self-assessment tool of academic researchers' knowledge translation activities and explaining the role of academic librarians in this process. This study was a methodology research. A questionnaire was designed and its psychometric properties including design, face validity and content validity, and internal and external reliability of the construct were measured. During the first and second stages of the research, the initial version of the questionnaire with 52 items was designed. During the third and fourth stages, the self-assessment section of knowledge translation activities was developed as the main structure of the questionnaire in four components, namely research question, knowledge creation, knowledge transfer, and promotion of using evidence. In the following, the psychometric analysis of the final version of the questionnaire (with 46 items) was approved for all the items with the impact score of 4.48, content validity index of 0.92, content validity ratio of 0.85, Cronbach's alpha coefficient of 0.91, and correlation coefficient of 0.93. The results of this study indicated that the developed questionnaire enjoys proper psychometric properties for the self-assessment of knowledge translation activities of academic researchers by considering the role of librarians in facilitating this process
PKM Tools for Developing Personal Knowledge Management Skills among University Students
Get PDFThis study aims to investigate how PKM tools support university students for developing personal knowledge management skills. It has been done based on the PKM Skill model developed by Avery, Brooks, Brown, Dorsey and O’Conner (2001) and Sharif and Hosseingholizadeh's (2016) PKM tools taxonomy. This research focuses on how PKM tools can support PKM skills in an academic environment. Data was collected from master's and PhD students of Ferdowsi University of Mashhad (FUM) (n=362). Results showed there is significant relationship between seven PKM skills and the use of PKM tools. The strength of the correlation is between the use of PKM tools and the securing, and analyzing skills. Also, the PKM skills play different and important role in awareness, being skilled in use of PKM tools and also the rate of usage. Some of PKM tools can be used by students to support their PKM skills. Moreover, results revealed that there is no significant relationship between usefulness and perceived ease of using and use of PKM tools. This necessity is felt more in the academic environments and among graduate students, since the nature of student's educational activities and research as knowledge worker, require skills of search, collect, transfer and sharing of information and knowledge.
Qur'anic Studies based on Web of Science
Get PDFThe purpose of this research is to analyze and map the production of the Quranic sciences field at the international level indexedin the WoS database during the period 2000 to 2017 using the VOSviewer software to illustrate the results.Descriptive - analytical method used to achieve the research purpose.The research population is comprised of all documentsregarding the Qur'anic studies indexed in the citation index of science and social sciences accessible through WOS.The results showed that most researches topicsduring 2000-2017 focused on Islam religion which was the main area of research. Regarding highly productive writers, Duderija and Behn each authored 9 documents and Burman placed in the next position.Zadeh, Rippin and Shoemaker have the highest number of co-authorship with 67, 62 and 42documents,respectively.Also, there are 75 countries in the field of Qur'anic studies in the form of articles in which The United States, Turkey, Malaysia and Iran, with 313, 145, 129 and 114 articles, are the most productivecountriesin this field.Considering higher Education Institutes, Malaysia International Islamic University, Islamic Azad University, university Malaya and Tehran University with the production of 39, 38, 36 and 14 articles about Quran, respectively, are the most productiv