Adel Azar; Habibollah Tabatabaie
Volume 1, Issue 2 , July 2003, , Pages 1-13
Abstract
In this paper, first, a conceptual framework has been developed and while truly recognizing different aspects of the technology transfer process, it is trying to introduce a decision-making methodology in the choice of projects. Then by choosing effective variables in technology transfer process, a Multiple ...
Read More
In this paper, first, a conceptual framework has been developed and while truly recognizing different aspects of the technology transfer process, it is trying to introduce a decision-making methodology in the choice of projects. Then by choosing effective variables in technology transfer process, a Multiple Criteria Decision-Making (MCDM) model has been designed, so that the choice of appropriate technology transfer projects based on a clear criterion, would be possible. Also, in order to improve the efficiency of the designed MCDM model, possible distribution of some effective qualitative variables such as technology life cycle, technology level, the possibility of technology adoption, etc. have been observed. In this way, most of the ambiguities, which are the results of using qualitative variables in decision-making issues, in the area of technology management would become clear. In addition, the risk analysis (RA) as well as the decision-making process related to technology assessment (TA) would be possible. In this research, various examples of the previous experiences of the Iranian companies in the area of technology management have been dealt with, and by designing nearly a realistic model, the main reasons for the failure of some foreign investment projects in Iran from the point of view of technology management are discussed. At the end, while generally introducing the designed model, this research elaborates on some suggestions for the better performance of foreign investments in the area of advanced technologies in Iran.
N. FAGHIH
Volume 1, Issue 1 , July 2003, , Pages 1-15
Abstract
This paper considersthe problem of aliasing in information processing. The cubic spline method of interpolating the uniformly sampled signals and its effects on the autocorrelation estimation as well as the resulting spectral density function are studied by simulating random signals with known autocorrelation ...
Read More
This paper considersthe problem of aliasing in information processing. The cubic spline method of interpolating the uniformly sampled signals and its effects on the autocorrelation estimation as well as the resulting spectral density function are studied by simulating random signals with known autocorrelation functions. Hence, by comparison of aliased and alias-free cases, indications are deduced from suspection to aliasing, especially in those situations that aliasing is present but the Nyquist frequency is not too far apart from the main peaks in the signal.
D. Tunger; C. Plott
Volume 3, Issue 2 , July 2005, , Pages 1-17
Abstract
This study aims to describe the way in which bibliometric analysis can become a trend recognition tool. The research work shows the application of bibliometric analysis in science. Such analyses provide information about the response received by scientific publications. The paper indicates how, with ...
Read More
This study aims to describe the way in which bibliometric analysis can become a trend recognition tool. The research work shows the application of bibliometric analysis in science. Such analyses provide information about the response received by scientific publications. The paper indicates how, with the aid of a tripartite division, it becomes possible to examine the past, present and future. For the past, it is above all the scientific output that is examined, for the present the response to this output is considered, and for the future perspective future fields are defined which provide information about this aspect. Indicators are introduced for each of the above-mentioned perspectives and the way these indicators are established is explained. With respect to the perspective of future fields, this involves investigating the interdisciplinarity of scientific publications. Bibliometrics is associated with methods of information management. These methods include, for example, critical success factors for trend recognition. A workflow additionally describes in four steps the different activities necessary for achieving the goal of trend recognition. Consideration is also given to possible forms of trends and how they are to be dealt with. The study concludes that it is possible to perform trend recognition by bibliometric methods.
A. Jafari; H. Eghbali Jahromi; S.S. Mohtasebi; M. Omid
Volume 4, Issue 1 , July 2006, , Pages 1-12
Abstract
In recent years, machine vision and optical sensors, which can be used in an autonomous weed killing equipment, are being used extensively to detect weeds from crops. In this study, seven types of weeds that grow in most of the sugar beet fields in Iran, especially in Fars province, were considered in ...
Read More
In recent years, machine vision and optical sensors, which can be used in an autonomous weed killing equipment, are being used extensively to detect weeds from crops. In this study, seven types of weeds that grow in most of the sugar beet fields in Iran, especially in Fars province, were considered in real outdoor conditions. Several color feature extraction algorithms have also been investigated to separate soil from the plants as well as weeds from the sugar beets. The performance of the proposed algorithm was evaluated by determining correct classification rates (CCR) and misclassification rates (MCR) of the results. The findings revealed that the proposed method could successfully detect five of the seven types of the weeds, including Chenopudium album L., Amaranthus retrofelexus L., Physalis alkekengi L., Convolvulus arvensis L., Setaria vertidis L. Beauv and Echinochloa crus-gali (L.) Beauv.
A. R. ZOLGHADR ASLI; B. AMIN SHAH; M. A. MASNADI SHIRAZI; M. H. GHAMAT
Volume 4, Issue 2 , July 2006, , Pages 1-14
Abstract
One of the limitations of orthogonal frequency division Multiplexing (OFDM) in many applications is its sensitivity to frequency shifts, errors normally referred to as carrier frequency offset (CFO). Although, this small offset is negligible in conventional single carrier communication systems, it ...
Read More
One of the limitations of orthogonal frequency division Multiplexing (OFDM) in many applications is its sensitivity to frequency shifts, errors normally referred to as carrier frequency offset (CFO). Although, this small offset is negligible in conventional single carrier communication systems, it is a severe problem in the OFDM systems. Because, the carriers in OFDM are inherently closely spaced in frequency, the tolerable frequency offset becomes a very small fraction of the channel bandwidth. Besides, for OFDM communication systems, the frequency offset in mobile radio channels distorts the orthogonality between subcarriers, resulting in intercarrier interference (ICI). In this paper, we analyze and compare the performance of some already existing methods for reducing ICI with new ICI cancellation schemes by simulation. Also the advantage of using a coding scheme is shown.
M. H. Shirali-shahreza; M. Shirali-Shahreza
Volume 5, Issue 1 , July 2007, , Pages 1-9
Abstract
Virtual learning is a new idea that has gotten a new form with the emergence of new technologies such as the wireless networks. The mobile phone (cell phone) is a device that is used by most people nowadays. Therefore, one can use the mobile phone for virtual learning on a wide scale. One of the ...
Read More
Virtual learning is a new idea that has gotten a new form with the emergence of new technologies such as the wireless networks. The mobile phone (cell phone) is a device that is used by most people nowadays. Therefore, one can use the mobile phone for virtual learning on a wide scale. One of the popular and at the same time simple and inexpensive services on the mobile phone is the SMS (Short Message Service). In this paper, we propose a method for taking multiple-choice quizzes by using the SMS on mobile phones. In the provision of these tests, after coding the questions with a key, some SMS messages were sent to the student along with the answers of the questions, which were steganography in an image. The student, after receiving and answering the questions, receives his grade at the client-side and then the grade and student answers are hidden in an SMS picture message and sent back to the instructor. Also, the location of student and the time that he took the exam are sent to the instructor by another SMS to prevent the possibility of any cheating. Moreover, the correct answers of the questions are destroyed within the image after they are extracted from image so as to eliminate the possibility of any cheating. The instructor also, after receiving the image and extracting the grade, records the student’s grade. Moreover, the instructor can find any cheating by comparing students locations, times they took the exam and their answers. Because of using the steganography method in sending the answers and grades, and also sending the student’s location and time of quiz, this method is highly secure and the possibility of cheating in the exam is reduced. This method was implemented with the J2ME language on a Nokia 3250 mobile phone.
J. Mehrad
Volume 5, Issue 2 , July 2007, , Pages 1-9
Abstract
Regional Library of Science and Technology (RLST), located in Fars State, is one of the international institutions of the Ministry of Science, Research and Technology which is active in the area of information production and dissemination. The following interview is aimed at providing the information ...
Read More
Regional Library of Science and Technology (RLST), located in Fars State, is one of the international institutions of the Ministry of Science, Research and Technology which is active in the area of information production and dissemination. The following interview is aimed at providing the information societies as well as our respectable readers with useful information regarding RLST.
J. Mehrad
Volume 6, Issue 1 , July 2008, , Pages 1-8
Abstract
Regional Information Center for Science and Technology (RICeST), located in Fars State, is one of the international institutions of the Ministry of Science, Research and Technology which is active in the area of information production and dissemination. The following interview is aimed at providing ...
Read More
Regional Information Center for Science and Technology (RICeST), located in Fars State, is one of the international institutions of the Ministry of Science, Research and Technology which is active in the area of information production and dissemination. The following interview is aimed at providing the information societies as well as our respectable readers with useful information regarding RICeST.
G. Al-Gaphari
Volume 6, Issue 2 , July 2008, , Pages 1-21
Abstract
With the present effort, we propose to investigate results of applying the Right-Truncated Index-Based Web Search Engine in order to determine its usefulness for storing and retrieving Arabic documents. The Right-Truncated Index-Based Web Search Engine, being a program for reading any set of Arabic ...
Read More
With the present effort, we propose to investigate results of applying the Right-Truncated Index-Based Web Search Engine in order to determine its usefulness for storing and retrieving Arabic documents. The Right-Truncated Index-Based Web Search Engine, being a program for reading any set of Arabic documents accepts a query, and then processes both the documents and the query. Thus, it selects (predicts) those documents most relevant to the query which has been inserted. The program encompasses both a morphological component and a mathematical one. The morphological component allows the researcher to run either a stemming algorithm or a right-truncated algorithm. The chief advantage of the stemming algorithm is that it uses the least possible amount of storage for indexing by mapping the inflected and derived terms into a single, indexed-stem word. On the other hand, the right-truncated algorithm reduces the amount of storage to a lesser degree, but increases the probability of retrieving relevant (user-favorable) documents, compared to the stemming algorithm. One of the purposes of our investigation is to compare the efficiency of these two indexing mechanisms. The mathematical component of the algorithm accepts the output of the right truncation algorithm, and then employs both term-frequency and inverse document-frequency (TF-IDF) in order to establish the relative importance of each document, respective to the terms of the query. This paper also describes building a simple search engine based on a crawler or a spider. The clawer which indexes different types of documents is an algorithm to crawl the file systems from specified folder. A basic design and object model was developed to support single search word results as well as multiple search words results. It is capable of finding data to index by following (tracing) web links rather than searching directory listings in the file system. In this process files are downloaded through HTTP and HTML pages parsed in order to obtain more links without getting into a recursive loop. Also, this paper discusses how to improve indexing mechanism efficiency using a right truncated stemmer in terms of Arabic documents processing.
J. Mehrad; F. Rahimi
Volume 7, Issue 1 , July 2009, , Pages 1-13
Abstract
This survey attempted to measure online search skills amongst post graduate students of Shiraz University. Having examined the literature on online search skills, seven most frequently used and applicable online search skills were selected for this study. The two broad objectives were to measure ...
Read More
This survey attempted to measure online search skills amongst post graduate students of Shiraz University. Having examined the literature on online search skills, seven most frequently used and applicable online search skills were selected for this study. The two broad objectives were to measure the mean score of each skill and also the difference between students of different post graduate levels with regard to the application of online search skills. The data were collected by a questionnaire. Descriptive and referential statistics were used to analyze the data. The results revealed that there were not any significant differences between the M.A. and the Ph.D. students in the seven search skills examined. The within-group analysis revealed, however, a significant difference amongst these seven skills such that the 'time limitation' skill had the highest score but the 'proximity' skill was in the lowest level. Other findings showed that there was a significant correlation between the real skills' scores as well as the self report scores of the participants. Also, more than 84% of the students declared that their familiarity with these skills had helped them retrieve information in the least amount of time.
S. Rezaei Sharifabadi; A. Khosravi; M. Haji Zeinolabedini
Volume 7, Issue 2 , July 2009, , Pages 1-14
Abstract
One of the most important factors challenging the issue of "information storage and retrieval" in the Internet environment is the lack of control on authorities, i.e. subject authority control. The present research aims at examining the feasibility of subject authority control of Persian medical ...
Read More
One of the most important factors challenging the issue of "information storage and retrieval" in the Internet environment is the lack of control on authorities, i.e. subject authority control. The present research aims at examining the feasibility of subject authority control of Persian medical databases available on the Net. Based on research methodology, we have randomly chosen 50 keywords utilized by users searching databases for articles. In the pre-test stage, these keywords were searched through Iranmedex, a database for Persian medical articles. Comparing them with Persian medical thesaurus, those keywords exactly matched to the thesaurus words were entered in a designed database using Microsoft Access software. Then, we entered these authorized keywords in Iranmedex. Findings of new search sessions revealed that control of authorities on the one hand, makes information retrieval more precise and accurate and, on the other prevents false drops. The research findings can be used for modifying the process of information storage and retrieval on the Internet. The research concludes with a model for applying thesauruses as authority control tools for other databases available at Internet.
S. Ruch; R. Ball
Volume 8, Issue 1 , July 2010, , Pages 1-19
Abstract
Traditional bibliometric indicators are only partially suitable for evaluating the scientific achievements of individual people. They are either notdefinitive or they are too complicated to use due to technical and methodological difficulties. There is still no definite evidence for thecorrelation between ...
Read More
Traditional bibliometric indicators are only partially suitable for evaluating the scientific achievements of individual people. They are either notdefinitive or they are too complicated to use due to technical and methodological difficulties. There is still no definite evidence for thecorrelation between the citation rate (CPP) and the H-Index. In order to obtain a reliable assessment of what the relation is between the H-Index andthe citation rate, we performed a study on 30 relevant scientists from the disciplines of "particle physics" and "neurology". The foregoing discussionson the different correlations revealed that the form and degree of correlation do not just vary considerably between the individual comparisons but alsoamongst the disciplines. In both disciplines, the correlation between the citation rate CPP and the H-Index was relatively low. We also found varyingdegrees of correlation here.
J. Mehrad; M. Naseri
Volume 8, Issue 2 , July 2010, , Pages 1-10
Abstract
This article deals with the establishment of the Islamic World Science Citation Center (ISC) as the first citation system in the Islamic countries. It attempts to describe the mapping of ISC the way it has been established. At the time being, ISC has begun to evaluate the research performance of the ...
Read More
This article deals with the establishment of the Islamic World Science Citation Center (ISC) as the first citation system in the Islamic countries. It attempts to describe the mapping of ISC the way it has been established. At the time being, ISC has begun to evaluate the research performance of the Islamic countries. The required research journals from the Islamic countries are being collected and processed in different subsystems of ISC. The languages used by ISC, at present, include Farsi (Persian), Arabic and English.
K. R. Mulla
Volume 9, Issue 1 , July 2011, , Pages 1-17
Abstract
The study is based on 1808 citations appended to 101 research articles published in 7 volumes of 14 issues appeared in the International Journal of Information Science and Management (IJISM) during 2003 to 2009. Earlier, this journal was known (before 2008) as the Iranian Journal of Information Science ...
Read More
The study is based on 1808 citations appended to 101 research articles published in 7 volumes of 14 issues appeared in the International Journal of Information Science and Management (IJISM) during 2003 to 2009. Earlier, this journal was known (before 2008) as the Iranian Journal of Information Science and Technology (IJIST). Here, the author is considering the latest title (IJISM) for the study. The study reveals that totally 190 authors have contributed 101 articles during 2003 to 2009. The majority of the articles were published in 2007, and more numbers of 32 (16.84%) authors had contributed 14 articles in 2006. The greatest number of (49.47) authors contributed with two-authored papers and authors’ collaboration was found to be 0.80. The average number of authors per volume was 27.14. IJISM contained 1808 references out of which 1573 are print-citations and 235 are electronic-citations in 101 articles. This means that every issue published approximately 14.43 articles and each article had an average of 12.43 percent of print references and 1.86 percent of electronic citations. It was noted that authors had preferred print information for citations and journals were the most preferred sources among the print and electronic references compared to books, proceedings, theses and other sources. The country wise distributions of articles were 17 countries. Out of total 190 contributions, the highest numbers i.e., 157 have been contributed from Iran, which stands in the first rank among the contributors. UK and Germany stand in the second and third place respectively, followed by India, Nigeria, China, Bangladesh and Malaysia which are in the fourth place with a contribution of 2 articles each. Similarly, 9 countries are together in the fifth rank with a contribution of one article each.
H. Vahdatnejad; M. A. Nematbakhsh; K. Zamanifar; N. Nematbakhsh
Volume 9, Issue 2 , July 2011, , Pages 1-12
Abstract
Several semantic image search schemes have been recently proposed to retrieve images from the web. However, the query context is regularly ignored in these techniques and hence, many of the returned images are not adequately relevant. In this paper, we make use of context to further confine the outcome ...
Read More
Several semantic image search schemes have been recently proposed to retrieve images from the web. However, the query context is regularly ignored in these techniques and hence, many of the returned images are not adequately relevant. In this paper, we make use of context to further confine the outcome of the semantic search engines. For this purpose, we propose a hybrid search engine which utilizes concept and context for retrieving precise results. In the proposed model, an ontology is exploited for annotating images and accomplishing search process in the semantic level. Furthermore, the query of the user is modified with the concepts available in the ontology. Next, we make use of search context of the user and augment the query with the information extracted from the user’s context to additionally eliminate irrelevant results. Experimental results show that the combination of concept and context is effective in retrieving and presenting the most relevant results to the user.
A. Shabani; F. Naderi kharaji; M. R. Abedi
Volume 10, Issue 1 , July 2012, , Pages 1-14
Abstract
This research attempted to study the reading behavior of graduate students in digital environment at University of Isfahan through 2008-2009. Different elements such as types of electronic resources, reading methods, amounts of note taking, amounts of printing and the advantages of using the electronic ...
Read More
This research attempted to study the reading behavior of graduate students in digital environment at University of Isfahan through 2008-2009. Different elements such as types of electronic resources, reading methods, amounts of note taking, amounts of printing and the advantages of using the electronic resources are being discussed. The paper employs descriptive survey research method to answer the questions. Data needed for research was gathered through a researcher-made questionnaire based on the related literature and Liu's questionnaire (2005). The statistical population used in this research consisted of the graduate students of seven departments in University of Isfahan and stratum random sampling was applied. The findings showed that students make use of different types of electronic resources. They tend to take notes from printed material and print electronic resources. They scan when they read from computer monitors. The highest advantage of reading electronic resources is acquiring update information and remote access while the least significant advantage is the ease of reading on the computer screens.
S. Ebrahimy; F. Osareh
Volume 10, Issue 2 , July 2012, , Pages 1-13
Abstract
This study historically analyzes the scientific output of Mathematics to describe its structure, notions and scientific origin using the historiographical method. The research data consisted of scientific outputs of Mathematics in ISI database, Science Citation Index (SCI) and Social Science Citation ...
Read More
This study historically analyzes the scientific output of Mathematics to describe its structure, notions and scientific origin using the historiographical method. The research data consisted of scientific outputs of Mathematics in ISI database, Science Citation Index (SCI) and Social Science Citation Index (SSCI) during 8 years (1990 to 2007). The data collection tool was the search engine and the analysis part of the WOS and also HistCiteTM software. According to White (2003), the sample of the study was circa one percent of the studied data (i.e. 120 documents) that was analyzed based on two different aspects: Local Citation Score (LCS) and Global Citation Score (GCS).The research results show that with regard to Local Citation Score (LCS), five scientific clusters were formed and all of them were related to different fields of “Mathematics Education”. Based on Global Citation Score (GCS), there were no significant scientific cluster in this field, and this is while the amount of Global Citation Score was significantly more than Local Citation Score. According to the findings it seems that: 1. The major scientific clusters and transitions in Mathematics are mostly related to theoretical fields as this issue has caused a new paradigm in this discipline. 2. The amount of this scientific field’s influence on Applied Mathematics is much more than the non- Applied Mathematics.
F. Osareh; R. Khademi
Volume 11, Issue 1 , January 2013, , Pages 1-10
Abstract
The purpose of this study was to map the structure of scientific outputs of petroleum field in Science Citation Index (SCI) accessible via Web of Science (WOS) during 1990 to 2011 and determine the position of Iran. The used research methods were citation analysis and historiography. The results showed ...
Read More
The purpose of this study was to map the structure of scientific outputs of petroleum field in Science Citation Index (SCI) accessible via Web of Science (WOS) during 1990 to 2011 and determine the position of Iran. The used research methods were citation analysis and historiography. The results showed that there were totally 26859 records indexed in the petroleum discipline during 1990-2011 in SCI. USA, 7237 documents (27.28%), was the most collaborative country in this research. Iran with 321 documents ranked 21th country among all countries. The American author, Marshall A.G., with 85 documents ranked top among the most productive authors. In Iran, Kharrat from Petroleum University of Technology with 8 documents was the most productive Iranian author in petroleum field. Among the institutes and universities, Chinese Academy of Science was the most productive with 530 documents. Among the institutes and universities at national level, Tehran University has the first place with 53 documents. Energy & Fuels, Organic Geochemistry, and Abstracts of Papers of the American Chemical Society were the most important journals in terms of production and citation (both LCS and GCS) in petroleum field. The scientific map of petroleum field was drawn using HistCiteTM software. The analysis of the map revealed six thematic clusters including “Analysis and evaluation of compounds and elements of molecular structure of petroleum”, “Analysis and evaluation of compounds and elements of molecular structure of petroleum using mass spectrometry”, “reviewing and modeling of conditions of production and formation of source rock”, “survey of petroleum and its compounds biodegradation by bacteria and algae”, “survey of characteristics and history of petroleum reservoir”, and “survey of polycyclic aromatic hydrocarbons (PAHs)”.
Saman Saghafi; Maryam Asadi; Farideh Osareh
Volume 11, Issue 2 , July 2013, , Pages 1-24
Abstract
Bibliometric, and scientometric approaches are used to provide appropriate tools for evaluating scientific products at local, national, and international levels. Iran, the same as other countries, has many universities and research centers in the field of engineering that Iran's most of the scientific ...
Read More
Bibliometric, and scientometric approaches are used to provide appropriate tools for evaluating scientific products at local, national, and international levels. Iran, the same as other countries, has many universities and research centers in the field of engineering that Iran's most of the scientific products account for the field of engineering. This study is a descriptive approach using scientometric methods. is The present paper mainly focuses on visualizing the structure of the Iranian scientific publications in the field of engineering indexed in Thomson Reuters (ISI) accessible via WoS during 1939-2011. To draw the historiographical map of Iranian scientific outputs in the field of engineering, this study used HistCiteTM software. Two indexes, Local Citation Score and Global Citation Score, were used for the purpose of ranking and visualizing data. The results showed that the published papers of Iranian researchers in the field of engineering showed fluctuation. The proportion of Iran in the engineering outputs constituted 0.65% of total publications and ranked 24 of the world. Five large clusters have been formed on the LCS index. The subject areas of the clusters were in “Thermodynamics and Chemical engineering”, “N-O Explosives, “liquid membranes”, “Liquid–liquid equilibrium”, and “decolorization”. However, three clusters have been formed on the GCS index. The subject areas of the clusters were in “liquid membranes”, “applied chemistry”, and “Liquid–liquid equilibrium”. Zafarani-Moattar and Sadeghi, and Ganji, played an important role in this map.
Kotti Thavamani
Volume 12, Issue 2 , June 2014, , Pages 1-17
Abstract
This article analyzed the various bibliometric components of the articles published in the Malaysian Journal of Library and Information Science from 1996 to 2012. Various quality aspects of the 279 articles published in the period were studied. The study demonstrates and elaborates on the various aspects ...
Read More
This article analyzed the various bibliometric components of the articles published in the Malaysian Journal of Library and Information Science from 1996 to 2012. Various quality aspects of the 279 articles published in the period were studied. The study demonstrates and elaborates on the various aspects of the journal, such as its distribution of article by year, authorship patterns, distribution of contributions by institution, subject distributions, citation patterns, length of article, and geographical distributions of authors. Analysis of data reveals that more number of research articles are published from Malaysia followed by India. Bibliometrics / Scientrometrics / Journal Studies and User Studies are leading subject areas have been carried out during this period. The highest number of contributions was published in the year of 2011. The maximum number of articles has been contributed by academic institutions. Citation analysis of 6779 citations includes finding out average number of citations per contribution. The average degree of author collaboration has been arrived at 0.645 during the study period.
Mohsen Nowkarizi; Mahdi Zeynali Tazehkandi
Volume 17, Issue 1 , January 2019
Abstract
The aim of the study was to improve Persian search engines’ retrieval performance by using the new measure. In this regard, consulting three experts from the Department of Knowledge and Information Science (KIS) at Ferdowsi University of Mashhad, 192 FUM students of different degrees from different ...
Read More
The aim of the study was to improve Persian search engines’ retrieval performance by using the new measure. In this regard, consulting three experts from the Department of Knowledge and Information Science (KIS) at Ferdowsi University of Mashhad, 192 FUM students of different degrees from different fields of study, both male and female, were asked to conduct the search based on 32 simulated work tasks (SWT) on the selected search engines and report the results by citing the related URLs. The Findings indicated that to measure recall, one does not focus on how documents are selecting, but the retrieval of related documents that are indexed in the information retrieval system database is considered While to measure comprehensiveness, in addition to considering the related documents' retrieval in the system's database, the performance of the documents selecting on the web (performance of crawler) was also measured. At the practical level, there was no strong correlation between the two measures (recall and comprehensiveness) however, these two measure different features. Also, the test of repeated measures design showed that with the change of the measure from recall to comprehensiveness, the search engine’s performance score is varied. Finally, it can be said, if the study purpose of the search engines evaluation is to assess the indexer program performance, the recall use will be suggested while, if its purpose is to appraise the search engines to determine which one retrieves the most relevant documents, the comprehensiveness use will be proposed.
Mohammad Bagher Dastgheib; Sara Koleini; Farzad Rasti
Volume 18, Issue 1 , February 2020, , Pages 1-15
Abstract
Nowadays the amount of textual information on the web is grown rapidly. The huge textual data needs more accurate classification algorithms. Sentiment analysis is a branch of text classification that is used to classify user opinions in case of market decisions, product evaluations or measuring consumer ...
Read More
Nowadays the amount of textual information on the web is grown rapidly. The huge textual data needs more accurate classification algorithms. Sentiment analysis is a branch of text classification that is used to classify user opinions in case of market decisions, product evaluations or measuring consumer confidence. With the rise of the production rate of Persian text data in a commercial area, improvement of the efficiency of algorithms in Persian is a must. The structure of the Persian language such as word and sentence structures poses some challenges in this area. Deep learning algorithms are recently used in NLP and especially sentiment text classification for many dominant languages like Persian. The goal is to improve the performance of classification using deep learning issues. In this work, the authors proposed a hybrid method by a combination of structural correspondence learning (SCL) and convolutional neural network (CNN). The SCL method selects the most effective pivot features so the adaptation from one domain to similar ones cannot drop the efficiency drastically. The results showed that the proposed hybrid method that is learned from one domain can act efficiently in a similar domain. The result showed that applying a combination of SCL+CNN can improve the result of sentiment classification for two domains more than 10 percent.
Mochammad Faizal; Adhi Prasetio
Volume 18, Issue 2 , August 2020, , Pages 1-18
Abstract
Telkom University as one of the universities in Indonesia that have used website media has never done in-depth research to find out whether the main website it manages still has a gap between expectations and perceptions from the perspective of its users. In previous studies, assessments of higher education ...
Read More
Telkom University as one of the universities in Indonesia that have used website media has never done in-depth research to find out whether the main website it manages still has a gap between expectations and perceptions from the perspective of its users. In previous studies, assessments of higher education websites were carried out using the slightly modified WebQual 4.0 instrument by omitting several indicators. However, it is not clear what the priority level of each indicator should be measured, based on the perception of their users. This study will measure the level of the gap between the users' expectations and perceptions of the Telkom University website, and what factors are prioritized to be improved. To collect the required data, researchers distributed questionnaires to 400 stakeholders of the Telkom University website. The collected data were analyzed using the Gap Analysis and Importance-Performance Analysis methods. It can be seen that there are nine indicators on Telkom University's website that need improvement. From the results of this study, it can be concluded that there is still a gap between the expectations and perceptions of users, with several factors that must be corrected to improve the quality of the Telkom University website sequentially from the highest priority. This study contributes by developing the modified WebQual 4.0 instrument to assess the quality of the university website which uses five variables such as Usability, Information Quality, Service Interaction Quality, User Interface Quality, and Availability, and also provides an overview of the indicators that must be improved, indicators that must be maintained, indicators with low priority, and which indicators must be reduced in priority on the Telkom University website, Telkom University, Indonesia
Mohsen Fazeli-Varzaneh; Erfan Ghaderi-Azad; Bakthavachalam Elango
Volume 19, Issue 1 , December 2021, , Pages 1-13
Abstract
This study aims to examine the research output in engineering by the Middle East countries. The data on engineering research by Middle East countries were collected from Web of Science. Collected data were analyzed with various tools such as Average Annual Growth Rate (AAGR), Compound Annual Growth ...
Read More
This study aims to examine the research output in engineering by the Middle East countries. The data on engineering research by Middle East countries were collected from Web of Science. Collected data were analyzed with various tools such as Average Annual Growth Rate (AAGR), Compound Annual Growth Rate (CAGR), Activity Index (AI), and Relative Specialization Index (RSI). The level of regional and international cooperation in the Middle East countries was also identified. Findings showed Iran has the highest overall performance in total documents, total citations, h-index, and highly cited papers, but most of the publications by Yemen were international cooperation. Iran, Kuwait, Oman, Saudi Arabia, UAE, and Yemen in the field of petroleum engineering; Bahrain and Qatar in industrial engineering; Turkey in geological engineering; Syria in agricultural engineering; Lebanon in medical engineering; Israel in cell & tissue engineering; Iraq in civil engineering; Egypt in Chemical Engineering; and Jordan in Software Engineering have the highest RSI in their countries. Results show that Iran had the best performance in most of the indicators (quantitative indices) and Saudi Arabia has good performance in qualitative indices among Middle East countries
Fezzeh Ebrahimi; Asefeh Asemi; Ahmad Shabani; Amin Nezarat
Volume 19, Issue 2 , July 2021, , Pages 1-18
Abstract
Nowadays, scientific collaboration has dramatically increased due to web-based technologies, advanced communication systems, and information and scientific databases. The present study aims to provide a predictive model for author collaborations in bioinformatics research output using graph mining techniques ...
Read More
Nowadays, scientific collaboration has dramatically increased due to web-based technologies, advanced communication systems, and information and scientific databases. The present study aims to provide a predictive model for author collaborations in bioinformatics research output using graph mining techniques and big data applications. The study is applied-developmental research adopting a mixed-method approach, i.e., a mix of quantitative and qualitative measures. The research population consisted of all bioinformatics research documents indexed in PubMed (n=699160). The correlations of bioinformatics articles were examined in terms of weight and strength based on article sections including title, abstract, keywords, journal title, and author affiliation using graph mining techniques and big data applications. Eventually, the prediction model of author collaboration in bioinformatics research was developed using the abovementioned tools and expert-assigned weights. The calculations and data analysis were carried out using Expert Choice, Excel, Spark, and Scala, and Python programming languages in a big data server. Accordingly, the research was conducted in three phases: 1) identifying and weighting the factors contributing to authors’ similarity measurement; 2) implementing co-authorship prediction model; and 3) integrating the first and second phases (i.e., integrating the weights obtained in the previous phases). The results showed that journal title, citation, article title, author affiliation, keywords, and abstract scored 0.374, 0.374, 0.091, 0.075, 0.055, and 0.031. Moreover, the journal title achieved the highest score in the model for the co-author recommender system. As the data in bibliometric information networks is static, it was proved remarkably effective to use content-based features for similarity measures. So that the recommender system can offer the most suitable collaboration suggestions. It is expected that the model works efficiently in other databases and provides suitable recommendations for author collaborations in other subject areas. By integrating expert opinion and systemic weights, the model can help alleviate the current information overload and facilitate collaborator lookup by authors.https://dorl.net/dor/20.1001.1.20088302.2021.19.2.1.9
