Digital Commons Network^™

Predictors Of Information Retrieval Effectiveness Among Library And Information Science Undergraduates In Kwara State Universities, Adeyinka Tella

Library Philosophy and Practice (e-journal)

In this information age, it is observed that, as the quantity of information grows the ability of individuals to search and retrieve the needed information decreases in a dramatically manner, which implies that our information retrieval activity lacks effectiveness. It assumed that some factors should be responsible; however, there is no empirical evidence that predict or determine information retrieval effectiveness. This study examined predictors of information retrieval effectiveness among Library and Information Science (LIS) undergraduate students in universities in Kwara State, Nigeria; considered correlation among the predictors of information retrieval effectiveness, identify the best predictive factor of information retrieval effectiveness, …

Assessing Virtual Learning Environment In Malaysia’S Public University, Ahmad Fuzi Md Ajis, Jafalizan Md Jali, Mazwani Ayu Mazlan, Siti Khairiyah Nordin, Jannatul Iza Ahmad Kamal

Library Philosophy and Practice (e-journal)

Public Universities in Malaysia are having many programs offered to their students and using e-learning or VLE as their platform, which mostly enrolled by distant learning students. However, no research report found on the current state of VLE practices whether they should be maintained or improvised. Assessment on process capability should be done to ensure quality operation of VLE. This study aims to assess the process being carried by the higher education provider to identify which process of VLE practice require critical improvement. Using e-Learning Maturity Model (eMM), a group of active lecturer/instructor in e-learning was selected to assess current …

Assessment Of Study Space Usage In The Kenneth Dike Library, Bolariwa M. Adeyemi

Library Philosophy and Practice (e-journal)

This paper explore the actual use of the physical space in Kenneth Dike Library by the students' population, the role these spaces are playing for learning and for related services in the university of Ibadan academic environment. It looked at the suitability of available spaces and suggestions for improvement. Survey method was adopted for the study with 94.5% response rate. It found that quite study is what attract majority respondents to Kenneth Dike Library. What emerged was that academic pursuits remain the most common activity in the library space.

Electronic Journal Of Knowledge Management: A Bibliometric Analysis, Jyotshna Sahoo, Ghanashyam Meher, Basudev Mohanty

Library Philosophy and Practice (e-journal)

The Electronic Journal of Knowledge Management (EJKM) is an online open access peer-reviewed journal that publishes articles with regard to the development of both theory and practice in the field of Knowledge Management. The present paper examines the articles published in EJKM during the period from 2003-13 for identifying the publication output, authorship pattern, degree of collaboration, most prolific contributors, geographical distribution of papers, referencing pattern, self citation pattern and several other characteristics. The results of this study reveal that that the year 2009 is the most productive year, research papers are given more importance than other categories of publications. …

Issues In Acquisition And Application Of Conventional And Online Complementary Cataloguing Competencies In Nigerian University Libraries, Emmanuel Chukwudi Ihekwoaba

Library Philosophy and Practice (e-journal)

The study investigated issues in acquisition and application of conventional and online complementary cataloguing competencies in Nigerian university libraries with a view to proffering appropriate solution. Five research questions guided the work. The study adopted a descriptive survey research design. The population of the study comprised 168 librarians drawn from six university libraries. The universities used for the study were: University of Ife, University of Ibadan, University of Benin, University of Lagos, University of Port Harcourt and University of Nigeria. The instrument used for data collection was a questionnaire (CAACOCCQ). The instrument was face validated by three professional experts. The …

Locating Wojnarowicz: Moving Through Library Systems, Structures And Technologies, Emily Drabinski, Alana Kumbier

Library Philosophy and Practice (e-journal)

This paper asks critical questions about the role of classification structures and descriptive systems in generating new knowledge from library and archives collections. Grounded in theories of articulation advanced by Ernesto Laclau and Chantal Mouffe, the authors posit that librarians and archivists might function better as translators across classifying systems, rather than as merely transcribers and builders of the systems themselves. The analysis looks to two collections of materials by and about queer artist and activist David Wojnarowicz to understand the varying ways libraries and archives construct stable articulations around shifting subjects of knowledge.

Web Presence And Structure Evaluation Of The European National Libraries’ Websites: A Study, Monika Gupta, Paramjeet K. Walia

Library Philosophy and Practice (e-journal)

The purpose of this study is to evaluate European national libraries’ websites on the basis of webometrics. It also analyze the structure of the selected European national libraries’ websites on the basis of number of checkpoints. On the basis of number of web indicators such as number of webpages, in-links, rich content files, publications in Google Scholar and WISER, web presence of the selected European national libraries’ websites were examined. For collection of webometrics data Google search engine and Check PageRank tool were used. To evaluate structure’s attributes, a checklist was drafted which is based on published literature and guidelines. …

Information Asymmetry Between Microfinance Banks And Poor Women In Oyo State, Nigeria: A Critical Examination, Adesoji Tayo, Yacob Haliso, Omolara Tayo

Library Philosophy and Practice (e-journal)

Nigeria like any other developing country is facing the problems of poverty, Nigeria’s case is peculiar given the country’s natural endowment in agriculture, mineral resources, crude oil, human capital and friendly climatic conditions. World Bank estimated that over 70 percent of Nigerians are classified as poor, and half of this number lives in absolute poverty. Indeed, part of the experience in rural development in Nigeria has clearly shown that efforts at expanding the economic base of the rural areas almost always fail because of scarcity of and restrictive access to loanable funds.

Poverty alleviation is perhaps one of the most …

Influence Of Information Asymmetry On Microfinance Lending To Women In Oyo State, Nigeria: A Critical Examination, Adesoji Tayo, Yacob Haliso, Omolara Tayo

Library Philosophy and Practice (e-journal)

Poverty is perhaps one of the most difficult challenges bedeviling the developing countries of the world today. Statistical evidences show that there has been a surge in poverty since 1960 in Nigeria. The level of poverty between 2004 and 2010, rose from 54.4%, to 69% and by 2011, relative poverty had risen to about 71.5% (National Bureau of Statistics NBS (2012). Poverty alleviation has been a rather herculean venture because the causes of poverty are ubiquitous and the solution to the problem would require a mix of interventions and programmes in an integrated manner. Microfinance was adopted by Nigeria as …

Information Needs And Information Seeking Behavior Of Researchers In Nigerian Stored Products Research Institute, Ilorin, Kwara State, Momoh Emmanuel Omeiza, Folorunso Abubakar Lanre

Library Philosophy and Practice (e-journal)

This study was undertaken to investigate the information needs and information seeking behavior of the researchers in Nigerian Stored Products Research Institute, Ilorin, Kwara State. The study used questionnaire and interview method to obtain data from the respondents. Out of the sixty copies of questionnaire distributed to respondents, fifty-three copies were returned and found useable for the study. There was also an interview with the Director, library services in the institute. Findings from the study revealed that the information needs of the researchers were mainly on current awareness, to prepare for promotion exercises and job interviews and to prepare for …

Factors Associated With Continuing Emergence Of Β-Thalassemia Major Despite Prenatal Testing: A Cross-Sectional Survey, Haleama Al Sabbah, Sarah Khan, Abdallah Hamadna, Lamia Abu Ghazaleh, Anwar Dudin, Bashar Adnan Karmi

All Works

© 2017 Al Sabbah et al. Purpose: Health care initiatives focusing on prenatal testing and premarital genetic screening aiming to reduce the incidence of β-thalassemia have emerged during the last decade. In Palestine, 4% of the population are known thalassemia carriers with new cases continuing to appear despite the availability of prenatal testing. This study aims to identify factors that influence the decision to retain or abort fetuses affected by β-thalassemia in Palestine. Methods: Convenience sampling was used to select 32 women (72 fetuses) who were at risk of having a baby with β-thalassemia. A questionnaire on prenatal testing, test …

Collaboration In Virtual Worlds: Impact Of Task Complexity On Team Trust And Satisfaction, Fiona Fui-Hoon Nah, Shu Schiller, Brian E. Mennecke, Keng Siau

Research Collection School Of Computing and Information Systems

Virtual worlds are three-dimensional, computer-generated worlds in which team collaboration can be facilitated through the use of shared virtual space and mediated using avatars. This article examines the effect of task complexity on team collaboration. A puzzle game in Second Life was used as the collaborative task and task complexity was manipulated by varying the number of pieces in the puzzle. The hypotheses are that task complexity influences team trust, and team trust influences team process satisfaction in virtual team collaboration. The experimental results indicate that task complexity has significant effects on team trust and team process satisfaction, and team …

A Two-Sided Collaborative Transparent Display Supporting Workspace Awareness, Jiannan Li, Saul Greenberg, Ehud Sharlin

Research Collection School Of Computing and Information Systems

Transparent displays naturally support workspace awareness during face-to-face interactions. Viewers see another person’s actions through the display: gestures, gaze, body movements, and what one is manipulating on the display. Yet we can design even better collaborative transparent displays. First, collaborators on either side should be able to directly interact with workspace objects. Second, and more controversially, both sides should be capable of presenting different content. This affords: reversal of images/text in place (so that people on both sides see objects correctly); personal and private territories aligned atop each other; and GUI objects that provide different visuals for feedthrough vs. feedback. …

Stochastic Invariants For Probabilistic Termination, Krishnendu Chatterjee, Petr Novotný, Dorde Zikelic

Research Collection School Of Computing and Information Systems

Termination is one of the basic liveness properties, and we study the termination problem for probabilistic programs with real-valued variables. Previous works focused on the qualitative problem that asks whether an input program terminates with probability 1 (almost-sure termination). A powerful approach for this qualitative problem is the notion of ranking supermartingales with respect to a given set of invariants. The quantitative problem (probabilistic termination) asks for bounds on the termination probability, and this problem has not been addressed yet. A fundamental and conceptual drawback of the existing approaches to address probabilistic termination is that even though the supermartingales consider …

Concept-Based Interactive Search System, Yi-Jie Lu, Phuong Anh Nguyen, Hao Zhang, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

Our successful multimedia event detection system at TREC-VID 2015 showed its strength on handling complex concepts in a query. The system was based on a large number of pre-trained concept detectors for textual-to-visual relation. In this paper, we enhance the system by enabling human-in-the-loop. In order to facilitate a user to quickly find an information need, we incorporate concept screening, video reranking by highlighted concepts, relevance feedback and color sketch to refine a coarse retrieval result. The aim is to eventually come up with a system suitable for both Ad-hoc Video Search and Known-Item Search. In addition, as the increasing …

Cross-Modal Recipe Retrieval: How To Cook This Dish?, Jingjing Chen, Lei Pang, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

In social media users like to share food pictures. One intelligent feature, potentially attractive to amateur chefs, is the recommendation of recipe along with food. Having this feature, unfortunately, is still technically challenging. First, the current technology in food recognition can only scale up to few hundreds of categories, which are yet to be practical for recognizing ten of thousands of food categories. Second, even one food category can have variants of recipes that differ in ingredient composition. Finding the best-match recipe requires knowledge of ingredients, which is a fine-grained recognition problem. In this paper, we consider the problem from …

Rfid Ownership Transfer With Positive Secrecy Capacity Channels, Jorge Munilla, Mike Burmester, Alberto Peinado, Guomin Yang, Willy Susilo

Research Collection School Of Computing and Information Systems

RFID ownership transfer protocols (OTPs) transfer tag ownership rights. Recently, there has been considerable interest in such protocols; however, guaranteeing privacy for symmetric-key settings without trusted third parties (TTPs) is a challenge still unresolved. In this paper, we address this issue and show that it can be solved by using channels with positive secrecy capacity. We implement these channels with noisy tags and provide practical values, thus proving that perfect secrecy is theoretically possible. We then define a communication model that captures spatiotemporal events and describe a first example of symmetric-key based OTP that: (i) is formally secure in the …

Open-Source Based Testbed For Multioperator 4g/5g Infrastructure Sharing In Virtual Environments, Ricardo Marco Alaez, Jose M. Alcaraz Calero, Qi Wang, Fatna Belqasmi, May El Barachi, Mohamad Badra, Omar Alfandi

All Works

© 2017 Ricardo Marco Alaez et al. Fourth-Generation (4G) mobile networks are based on Long-Term Evolution (LTE) technologies and are being deployed worldwide, while research on further evolution towards the Fifth Generation (5G) has been recently initiated. 5G will be featured with advanced network infrastructure sharing capabilities among different operators. Therefore, an open-source implementation of 4G/5G networks with this capability is crucial to enable early research in this area. The main contribution of this paper is the design and implementation of such a 4G/5G open-source testbed to investigate multioperator infrastructure sharing capabilities executed in virtual architectures. The proposed design and …

Antecedents And Consequences Of Private Label Brand Attitude In The Egyptian Retailers, Madiha Metawie, Reham Ibrahim Elseidi

Business Administration

The importance of private label brands has increased; several factors have been affecting the attitude towards private label brands. This research examines the relationship between the antecedents and consequences of private label attitude. A structural model is developed using AMOS version 22, and tested providing indications for the factors affecting the attitude towards private label brands. The results from the structural equation model explained the relationships between store image, familiarity with private label brands, price consciousness, quality consciousness, national brand loyalty and store loyalty on private label attitude. The findings revealed that six hypotheses were accepted and only one had …

Enabling Sustainable Bulk Transfer In Environmentally-Powered Wireless Sensor Networks, Alvin C. Valera, Wee-Seng Soh, Hwee-Pink Tan

Research Collection School Of Computing and Information Systems

We address the problem of transferring bulk data in environmentally-powered wireless sensor networks where duty cycle compliance is critical for their uninterrupted operation. We propose Pump-and-Nap, a packet train forwarding technique that maximizes throughput while simultaneously enforcing compliance to dynamic duty cycle limitations. A node using Pump-and-Nap operates by pumping a train of packets followed by a napping period where the node forgoes any transmission. Pump-and-Nap employs an adaptive controller to periodically compute the optimal capacity, that is, the maximum number of packets a node can receive and transmit in a train, given its duty cycle constraint. The controller uses …

Online Hacker Forum Censorship: Would Banning The Bad Guys Attract Good Guys?, Qiu-Hong Wang, Le-Ting Zhang, Meng-Ke Qiao

Research Collection School Of Computing and Information Systems

To tackle the ubiquitous cybersecurity threats, a few countries have enacted legislation to criminalize the production, distribution and possession of computer misuse tools. Consequently, online hacker forums, which enable the provision and dissemination of malicious cyber-attack techniques among potential hackers or technology-savvy users, are subject to censorship. This project examines the mixed impacts of online hacker forum censorship on users’ contribution to protection discussion through a natural experiment with large-scale content analysis. We find that while the enforcement indeed reduced the discussion on malicious cyber-attacks, the discussion on cybersecurity protection could increase or decrease in different scenarios. The rationale is …

On The Effectiveness Of Code-Reuse-Based Android Application Obfuscation, Xiaoxiao Tang, Yu Liang, Xinjie Ma, Yan Lin, Debin Gao

Research Collection School Of Computing and Information Systems

Attackers use reverse engineering techniques to gain detailed understanding of executable for malicious purposes, such as re-packaging an Android app to inject malicious code or advertising components. To make reverse engineering more difficult, researchers have proposed various code obfuscation techniques to conceal purposes or logic of code segments. One interesting idea of code obfuscation is to apply codereuse techniques (e.g., Return-Oriented Programming) to (re-)distribute essential code segments before they are reconstructed at runtime. Such techniques are well understood on x86 platform, but relatively less explored on Android. In this paper, we present an evaluation on the extent to which code-reuse-based …

Discovering Historic Traffic-Tolerant Paths In Road Networks, Pui Hang Li, Man Lung Yiu, Kyriakos Mouratidis

Research Collection School Of Computing and Information Systems

Historic traffic information is valuable in transportation analysis and planning, e.g., evaluating the reliability of routes for representative source-destination pairs. Also, it can be utilized to provide efficient and effective route-search services. In view of these applications, we propose the k traffic-tolerant paths (TTP) problem on road networks, which takes a source-destination pair and historic traffic information as input, and returns k paths that minimize the aggregate (historic) travel time. Unlike the shortest path problem, the TTP problem has a combinatorial search space that renders the optimal solution expensive to find. First, we propose an exact algorithm with effective pruning …

Easing Cross-Border Communication: Mobile-Mediated Communication And Its Framework, Kyungsub Choi, Young Soo Kim

Research Collection School Of Computing and Information Systems

Communication is probably the most critical component of an organization engaged in a cross-border collaboration. Today’s smart devices substantially contribute to such communication. Combined with social media, mobile communication technologies are becoming the main platform for many core functions within organizations. In this paper, we identified seven media identifiable attributes: synchronicity (SYN), de-individuation and co-presence (DCP), accessibility readiness (ARD), cognizance of environment change (CEC), wearability-portability (WRB) modality-select (MDS) and visibility (VSB). These seven attributes significantly impact the course of mobile-mediated communication. We believe that development of a theoretical perspective that embraces the complexity of mobile-mediated communication is due in order …

Exploring Representativeness And Informativeness For Active Learning, Bo Du, Zengmao Wang, Lefei Zhang, Liangpei Zhang, Wei Liu, Jialie Shen, Dacheng Tao

Research Collection School Of Computing and Information Systems

How can we find a general way to choose the most suitable samples for training a classifier? Even with very limited prior information? Active learning, which can be regarded as an iterative optimization procedure, plays a key role to construct a refined training set to improve the classification performance in a variety of applications, such as text analysis, image recognition, social network modeling, etc. Although combining representativeness and informativeness of samples has been proven promising for active sampling, state-of-the-art methods perform well under certain data structures. Then can we find a way to fuse the two active sampling criteria without …

Research Strategies For Biomedical And Health Informatics: Some Thought-Provoking And Critical Proposals To Encourage Scientific Debate On The Nature Of Good Research In Medical Informatics, Reinhold Haux, Et Al.

Research Collection School Of Computing and Information Systems

Medical informatics, or biomedical and health informatics (BMHI), has become an established scientific discipline. In all such disciplines there is a certain inertia to persist in focusing on well-established research areas and to hold on to well-known research methodologies rather than adopting new ones, which may be more appropriate. To search for answers to the following questions: What are research fields in informatics, which are not being currently adequately addressed, and which methodological approaches might be insufficiently used? Do we know about reasons? What could be consequences of change for research and for education? Outstanding informatics scientists were invited to …

High Impact Bug Report Identification With Imbalanced Learning Strategies, Xinli Yang, David Lo, Xin Xia, Qiao Huang, Jianling Sun

Research Collection School Of Computing and Information Systems

In practice, some bugs have more impact than others and thus deserve more immediate attention. Due to tight schedule and limited human resources, developers may not have enough time to inspect all bugs. Thus, they often concentrate on bugs that are highly impactful. In the literature, high-impact bugs are used to refer to the bugs which appear at unexpected time or locations and bring more unexpected effects (i.e., surprise bugs), or break pre-existing functionalities and destroy the user experience (i.e., breakage bugs). Unfortunately, identifying high-impact bugs from thousands of bug reports in a bug tracking system is not an easy …

Sensor-Driven Detection Of Social Isolation In Community-Dwelling Elderly, W K P Neranjana Nadee Rodrigo Goonawardene, Xiaoping Toh, Hwee-Pink Tan

Research Collection School Of Computing and Information Systems

Ageing-in-place, the ability to age holistically in the community, is increasingly gaining recognition as a solution to address resource limitations in the elderly care sector. Effective elderly care models require a personalised and all-encompassing approach to caregiving. In this regard, sensor technologies have gained attention as an effective means to monitor the wellbeing of elderly living alone. In this study, we seek to investigate the potential of non-intrusive sensor systems to detect socially isolated community dwelling elderly. Using a mixed method approach, our results showed that sensor-derived features such as going-out behavior, daytime napping and time spent in the living …

Safestack+: Enhanced Dual Stack To Combat Data-Flow Hijacking, Yan Lin, Xiaoxiao Tang, Debin Gao

Research Collection School Of Computing and Information Systems

SafeStack, initially proposed as a key component of Code Pointer Integrity (CPI), separates the program stack into two distinct regions to provide a safe region for sensitive code pointers. SafeStack can prevent buffer overflow attacks that overwrite sensitive code pointers, e.g., return addresses, to hijack control flow of the program, and has been incorporated into the Clang project of LLVM as a C-based language front-end. In this paper, we propose and implement SafeStack+, an enhanced dual stack LLVM plug-in that further protects programs from data-flow hijacking. SafeStack+ locates data flow sensitive variables on the unsafe stack that could potentially affect …

Infrastructure, Trade Facilitation, And Network Connectivity In Sub-Saharan Africa☆,☆☆, Ben Shepherd

Journal of African Trade

This paper uses new measures of value added in exports in two sectors (textiles and clothing, and agriculture) to examine the linkages between trade facilitation and infrastructure on the one hand, and value chain participation on the other. It applies network analysis methods to derive a summary measure of value chain connectivity for 189 countries, including 44 in Sub-Saharan Africa. There is a statistically significant association between this measure and summary indicators of infrastructure development and trade facilitation performance. Moreover, it is not only a country's own performance that matters, but also that of its neighbors. The regional dimension of …