Open Access. Powered by Scholars. Published by Universities.®

Computer Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Articles 631 - 660 of 677

Full-Text Articles in Computer Sciences

An Algorithm For Inferring Big Data Objects Correlation Using Word Net, M. Basel Almourad, Mohammed Hussain, Talal Bonny Jan 2016

An Algorithm For Inferring Big Data Objects Correlation Using Word Net, M. Basel Almourad, Mohammed Hussain, Talal Bonny

All Works

© 2016 The Authors. The value of big data comes from its variety where data is collected from various sources. One of the key big data challenges is identifying which data objects are relevant or refer to the same logical entity across various data sources. This challenge is traditionally known as schema matching. Due to big data velocity traditional approaches to data matching can no longer be used. In this paper we present an approach for inferring data objects correlation. We present our algorithm that relies on the objects meta-data and it consults the Word Net thesaurus.


Bloom Filters Optimized Wu-Manber For Intrusion Detection, Monther Aldwairi, Koloud Al-Khamaiseh, Fatima Alharbi, Babar Shah Jan 2016

Bloom Filters Optimized Wu-Manber For Intrusion Detection, Monther Aldwairi, Koloud Al-Khamaiseh, Fatima Alharbi, Babar Shah

All Works

With increasing number and severity of attacks, monitoring ingress and egress network traffic is becoming essential everyday task. Intrusion detection systems are the main tools for capturing and searching network traffic for potential harm. Signature -based intrusion detection systems are the most widely used, and they simply use a pattern matching algorithms to locate attack signatures in intercepted network traffic. Pattern matching algorithms are very expensive in terms of running time and memory usage, leaving intrusion detection systems unable to detect attacks in real-time. We propose a Bloom filters optimized Wu-Manber pattern matching algorithm to speed up intrusion detection. The …


Mining The Web And Literature To Discover New Knowledge About Diabetes, Farhi Marir, Huwida Said, Feras Al-Obeidat Jan 2016

Mining The Web And Literature To Discover New Knowledge About Diabetes, Farhi Marir, Huwida Said, Feras Al-Obeidat

All Works

© 2016 The Authors. Social Networks are powerful social media for sharing information about various issues and can be used to raise awareness and collect pointers about associated risk factors and preventive measures in chronical disease like diabetes. Since the olden times, knowledge in medicine was established through recording and analysing human experiences. This paper presents the results of text mining techniques of more than five hundred thousands of texts retrieved from social networks, blogs, forums, and also research papers from MEDLINE database to discovering new knowledge related to diabetes disease covering symptoms and treatments. The text mining approach consists …


A Lightweight Security Protocol For Nfc-Based Mobile Payments, Mohamad Badra, Rouba Borghol Badra Jan 2016

A Lightweight Security Protocol For Nfc-Based Mobile Payments, Mohamad Badra, Rouba Borghol Badra

All Works

© 2016 Published by Elsevier B.V. In this work, we describe a security solution that can be used to securely establish mobile payment transactions over the Near-Field Communication (NFC) radio interface. The proposed solution is very lightweight one; it uses symmetric cryptographic primitives on devices having memory and CPU resources limitations. We show that our approach maintains the security of NFC communications and we further demonstrate that our solution is simple, scalable, cost-effective, and incurs minimal computational processing overheads.


A Mof-Based Social Web Services Description Metamodel, Amel Benna, Zakaria Maamar, Mohamed Ahmed Nacer Jan 2016

A Mof-Based Social Web Services Description Metamodel, Amel Benna, Zakaria Maamar, Mohamed Ahmed Nacer

All Works

© Copyright 2016 by SCITEPRESS - Science and Technology Publications, Lda. All rights reserved. To promote and support the development and use of social Web services by the IT community on the Web, both social Web service-based applications and their support platforms should evolve independently from each other while sharing a common model that represents the characteristics of these social Web services. To achieve this duality, this paper proposes a model-driven approach. First, the approach identifies a social Web service's properties. Then a Meta-Object-Facility (MOF)-based social Web services description metamodel is developed. Finally, a prototype illustrates how the MOF-based metamodel …


An Architecture For Qos-Enabled Mobile Video Surveillance Applications In A 4g Epc And M2m Environment, Mohammad Abu-Lebdeh, Fatna Belqasmi, Roch Glitho Jan 2016

An Architecture For Qos-Enabled Mobile Video Surveillance Applications In A 4g Epc And M2m Environment, Mohammad Abu-Lebdeh, Fatna Belqasmi, Roch Glitho

All Works

© 2016 IEEE. Mobile video surveillance applications are used widely nowadays. They offer real-time video monitoring for homes, offices, warehouses, airports, and so on with live and pre-recorded on-demand video streaming. Quality of service (QoS) remains a key challenge faced by most of these applications. In this article, we propose an architecture for mobile video surveillance applications with a guaranteed and differentiated QoS support. The architecture relies on the 3GPP 4G evolved packet core (EPC). The main components are the QoS enabler, media server, and machine-to-machine gateway and surveillance application. To demonstrate its feasibility, a proof of concept prototype has …


Forensic Investigation Of Cyberstalking Cases Using Behavioural Evidence Analysis, Noora Al Mutawa, Joanne Bryce, Virginia N.L. Franqueira, Andrew Marrington Jan 2016

Forensic Investigation Of Cyberstalking Cases Using Behavioural Evidence Analysis, Noora Al Mutawa, Joanne Bryce, Virginia N.L. Franqueira, Andrew Marrington

All Works

Behavioural Evidence Analysis (BEA) is, in theory, useful in developing an understanding of the offender, the victim, the crime scene, and the dynamics of the crime. It can add meaning to the evidence obtained through digital forensic techniques and assist investigators with reconstruction of a crime. There is, however, little empirical research examining the application of BEA to actual criminal cases, particularly cyberstalking cases. This study addresses this gap by examining the utility of BEA for such cases in terms of understanding the behavioural and motivational dimensions of offending, and the way in which digital evidence can be interpreted. It …


Instructional Videos As Part Of A 'Flipped' Approach In Academic Writing, Marion Engin, Senem Donanci Jan 2016

Instructional Videos As Part Of A 'Flipped' Approach In Academic Writing, Marion Engin, Senem Donanci

All Works

This paper reports on a project in which students watched short instructional videos on aspects of academic writing as part of a 'flipped classroom' approach at an English-medium university in the United Arab Emirates. The authors present the video tutorial project in the context of the flipped classroom, and evaluate student satisfaction with the video input. The findings suggest that although most students liked watching the videos at home, and found the input easy to understand, they still felt the need for teacher explanations. One conclusion from this study is that students are not yet ready for a complete flipped …


Towards On Demand Road Condition Monitoring Using Mobile Phone Sensing As A Service, Wael Alrahal Alorabi, Sawsan Abdul Rahman, May El Barachi, Azzam Mourad Jan 2016

Towards On Demand Road Condition Monitoring Using Mobile Phone Sensing As A Service, Wael Alrahal Alorabi, Sawsan Abdul Rahman, May El Barachi, Azzam Mourad

All Works

© 2016 The Authors. With the increased need for mobility and the overcrowding of cities, the area of Intelligent Transportation aims at improving the efficiency, safety, and productivity of transportation systems by relying on communication and sensing technologies. One of the main challenges faced in Intelligent Transportation Systems (ITS) pertains to the real time collection of traffic and road related data, in a cost effective, efficient, and scalable manner. The current approaches still suffer from problems related to the energy consumption of mobile devices and overhead in terms of communications and processing. We have previously proposed the concept of Mobile …


Auto-Configuration Of Acl Policy In Case Of Topology Change In Hybrid Sdn, Rashid Amin, Nadir Shah, Babar Shah, Omar Alfandi Jan 2016

Auto-Configuration Of Acl Policy In Case Of Topology Change In Hybrid Sdn, Rashid Amin, Nadir Shah, Babar Shah, Omar Alfandi

All Works

© 2016 IEEE. Software-defined networking (SDN) has emerged as a new network architecture, which decouples both the control and management planes from data plane at forwarding devices. However, SDN deployment is not widely adopted due to the budget constraints of organizations. This is because organizations are always reluctant to invest too much budget to establish a new network infrastructure from scratch. One feasible solution is to deploy a limited number of SDN-enabled devices along with traditional (legacy) network devices in the network of an organization by incrementally replacing traditional network by SDN, which is called hybrid SDN (Hybrid SDN) architecture. …


Temperature Forecasts With Stable Accuracy In A Smart Home, Bruce Spencer, Feras Al-Obeidat Jan 2016

Temperature Forecasts With Stable Accuracy In A Smart Home, Bruce Spencer, Feras Al-Obeidat

All Works

© 2016 The Authors. We forecast internal temperature in a home with sensors, modeled as a linear function of recent sensor values. When delivering forecasts as a service, two desirable properties are that forecasts have stable accuracy over a variety of forecast horizons - so service levels can be predicted - and that the forecasts rely on a modest amount of sensor history - so forecasting can be restarted soon after any data outage due to, for example, sensor failure. From a publicly available data set, we show that sensor values over the past one or two hours are sufficient …


Forecasting Internal Temperature In A Home With A Sensor Network, Bruce Spencer, Omar Alfandi Jan 2016

Forecasting Internal Temperature In A Home With A Sensor Network, Bruce Spencer, Omar Alfandi

All Works

© 2016 The Authors. We forecast internal temperature in a home with sensors, modeled as a linear function of recent sensor values. The Smart∗Project provides publicly available data from an inhabited home over a three month period, reporting on 38 sensors including environmental readings, circuit loads, motion detectors, and switches controlling lights and fans. We select 13 of these sensors that have some influence on the internal temperature, and create forecasts that are accurate to within about 1.6°F (0.9°C) over the next six hours. Temperature prediction is important for saving energy while maintaining comfortable conditions in the home.


Cloud-Based Lineament Extraction Of Topographic Lineaments From Nasa Shuttle Radar Topography Mission Data, Feras Al-Obeidat, Leonardo Feltrin, Farhi Marir Jan 2016

Cloud-Based Lineament Extraction Of Topographic Lineaments From Nasa Shuttle Radar Topography Mission Data, Feras Al-Obeidat, Leonardo Feltrin, Farhi Marir

All Works

© 2016 The Authors. This paper presents initial results of a JavaTM based, feature extraction tool, which represents a standard implementation of a hill-shading algorithm that transforms a 2D image to pseudo 3D image to enhance edge contrast in combination with an edge detection Canny algorithm that performs segmentation to produce multidirectional sun-shaded images and their edges. Our goal is to firstly automate this processes in JavaTM to obtain multidirectional optimization of edge discovery and secondly scale this algorithm to the complete SRTM raster collection at multiple pixel resolutions to document the distribution of Earth topographic discontinuities from continental to …


Combining Weights Of Evidence Analysis With Feature Extraction - A Case Study From The Hauraki Goldfield, New Zealand, Leonardo Feltrin, João Gabriel Motta, Feras Al-Obeidat, Farhi Marir, Martina Bertelli Jan 2016

Combining Weights Of Evidence Analysis With Feature Extraction - A Case Study From The Hauraki Goldfield, New Zealand, Leonardo Feltrin, João Gabriel Motta, Feras Al-Obeidat, Farhi Marir, Martina Bertelli

All Works

© 2016 The Authors. In this contribution we combine different image processing and pattern recognition methodologies to map the probability of discovering epithermal mineral deposits in the northern part of the Coromandel peninsula, in New Zealand. The objective of this work is to propose a case-study where the substitution of structural geology GIS themes (commonly developed by humans) with products derived by image processing, computer-based, semi-automatic edge detection analyses, is carried out to reduce subjective input in the prospectivity analysis. Semi-automated lineament extraction results introduced in the mineral favourability statistical modelling can more easily reveal unexpected potentially mineralised target domains, …


An Elastic Hybrid Sensing Platform: Architecture And Research Challenges, Sleiman Rabah, Fatna Belqasmi, Rabeb Mizouni, Rachida Dssouli Jan 2016

An Elastic Hybrid Sensing Platform: Architecture And Research Challenges, Sleiman Rabah, Fatna Belqasmi, Rabeb Mizouni, Rachida Dssouli

All Works

© 2016 Published by Elsevier B.V. The dynamic provisioning of hybrid sensing services that integrates both WSN and MPS is a promising, yet challenging concept. It does not only widen the spatial sensing coverage, but it also enables different types of sensing nodes to collaboratively perform sensing tasks and complement each other. Furthermore, it allows for the provisioning of a new category of services that was not possible to implement in pure WSN or MPS networks. Offering a hybrid sensing platform as a service results in several benefits including, but no limited to, efficient sharing and dynamic management of sensing …


An Open Virtual Multi-Services Networking Architecture For The Future Internet, May El Barachi, Nadjia Kara, Sleiman Rabah, Mathieu Forgues Dec 2015

An Open Virtual Multi-Services Networking Architecture For The Future Internet, May El Barachi, Nadjia Kara, Sleiman Rabah, Mathieu Forgues

All Works

© 2015, El Barachi et al.; licensee Springer. Network virtualization is considered as a promising way to overcome the limitations and fight the gradual ossification of the current Internet infrastructure. The network virtualization concept consists in the dynamic creation of several co-existing logical network instances (or virtual networks) over a shared physical network infrastructure. We have previously proposed a service-oriented hierarchical business model for virtual networking environments. This model promotes the idea of network as a service, by considering the functionalities offered by different types of network resources as services of different levels – services that can be dynamically discovered, …


How To Make Business Processes "Socialize"?, Zakaria Maamar, Noura Faci, Ejub Kajan, Sherif Sakr, Mohamed Boukhebouze, Ahmed Barnawi Sep 2015

How To Make Business Processes "Socialize"?, Zakaria Maamar, Noura Faci, Ejub Kajan, Sherif Sakr, Mohamed Boukhebouze, Ahmed Barnawi

All Works

This paper presents an approach that builds upon social computing principles to make business processes; "socialize". First the approach identifies the main components of a business process that are task, person, and; machine. A task is a work unit that forms with other tasks a business process and that a person and/ormachine; execute. Afterwards the approach enriches a business process with details captured from the (execution; and social) relations that connect tasks together, persons together, and machines together. While execution; relations are widely reported in the literature, there is a growing interest in studying the role of social; relations in …


Fuzzy Logic-Based Guaranteed Lifetime Protocol For Real-Time Wireless Sensor Networks, Babar Shah, Farkhund Iqbal, Ali Abbas, Ki Il Kim Aug 2015

Fuzzy Logic-Based Guaranteed Lifetime Protocol For Real-Time Wireless Sensor Networks, Babar Shah, Farkhund Iqbal, Ali Abbas, Ki Il Kim

All Works

© 2015 by the authors; licensee MDPI, Basel, Switzerland. Few techniques for guaranteeing a network lifetime have been proposed despite its great impact on network management. Moreover, since the existing schemes are mostly dependent on the combination of disparate parameters, they do not provide additional services, such as real-time communications and balanced energy consumption among sensor nodes; thus, the adaptability problems remain unresolved among nodes in wireless sensor networks (WSNs). To solve these problems, we propose a novel fuzzy logic model to provide real-time communication in a guaranteed WSN lifetime. The proposed fuzzy logic controller accepts the input descriptors energy, …


Secure And Authenticated Data Communication In Wireless Sensor Networks, Omar Alfandi, Arne Bochem, Ansgar Kellner, Christian Göge, Dieter Hogrefe Aug 2015

Secure And Authenticated Data Communication In Wireless Sensor Networks, Omar Alfandi, Arne Bochem, Ansgar Kellner, Christian Göge, Dieter Hogrefe

All Works

© 2015 by the authors; licensee MDPI, Basel, Switzerland. Securing communications in wireless sensor networks is increasingly important as the diversity of applications increases. However, even today, it is equally important for the measures employed to be energy efficient. For this reason, this publication analyzes the suitability of various cryptographic primitives for use in WSNs according to various criteria and, finally, describes a modular, PKI-based framework for confidential, authenticated, secure communications in which most suitable primitives can be employed. Due to the limited capabilities of common WSN motes, criteria for the selection of primitives are security, power efficiency and memory …


Consciousness-Raising, Error Correction And Proofreading., Josephine O'Brien Jun 2015

Consciousness-Raising, Error Correction And Proofreading., Josephine O'Brien

All Works

The paper discusses the impact of developing a consciousness-raising approach in error correction at the sentence level to improve students' proofreading ability. Learners of English in a foreign language environment often rely on translation as a composing tool and while this may act as a scaffold and provide some support, it frequently leads to predictable and persistent errors. Such fossilization can cause inaccuracies that detract from student composition and that require instruction and repeated practice in order to eradicate the errors. The current paper reports on an experiment in consciousness-raising about specific categories of errors with a group of 30 …


Graph-Theoretic Characterization Of Cyber-Threat Infrastructures, Amine Boukhtouta, Djedjiga Mouheb, Mourad Debbabi, Omar Alfandi, Farkhund Iqbal, May El Barachi Jan 2015

Graph-Theoretic Characterization Of Cyber-Threat Infrastructures, Amine Boukhtouta, Djedjiga Mouheb, Mourad Debbabi, Omar Alfandi, Farkhund Iqbal, May El Barachi

All Works

In this paper, we investigate cyber-threats and the underlying infrastructures. More precisely, we detect and analyze cyber-threat infrastructures for the purpose of unveiling key players (owners, domains, IPs, organizations, malware families, etc.) and the relationships between these players. To this end, we propose metrics to measure the badness of different infrastructure elements using graph theoretic concepts such as centrality concepts and Google PageRank. In addition, we quantify the sharing of infrastructure elements among different malware samples and families to unveil potential groups that are behind specific attacks. Moreover, we study the evolution of cyber-threat infrastructures over time to infer patterns …


Business Reputation Of Social Networks Of Web Services, Zakaria Maamar, Gianpiero Costantino, Marinella Petrocchi, Fabio Martinelli Jan 2015

Business Reputation Of Social Networks Of Web Services, Zakaria Maamar, Gianpiero Costantino, Marinella Petrocchi, Fabio Martinelli

All Works

© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. This paper introduces a set of criteria that are used to establish the reputation of a social network from a business perspective. This network is populated with social Web services. Compared to regular Web services, social Web services establish and maintain networks of contacts, count on their (privileged) contacts when needed, etc. These criteria are membershipCost, demandLevel, satisfactionLevel, and retentionLevel, and assist a social Web service in selecting the best social network in which it will sign up. Similar criteria have …


Network And Device Forensic Analysis Of Android Social-Messaging Applications, Daniel Walnycky, Ibrahim Baggili, Andrew Marrington, Jason Moore, Frank Breitinger Jan 2015

Network And Device Forensic Analysis Of Android Social-Messaging Applications, Daniel Walnycky, Ibrahim Baggili, Andrew Marrington, Jason Moore, Frank Breitinger

All Works

In this research we forensically acquire and analyze the device-stored data and network traffic of 20 popular instant messaging applications for Android. We were able to reconstruct some or the entire message content from 16 of the 20 applications tested, which reflects poorly on the security and privacy measures employed by these applications but may be construed positively for evidence collection purposes by digital forensic practitioners. This work shows which features of these instant messaging applications leave evidentiary traces allowing for suspect data to be reconstructed or partially reconstructed, and whether network forensics or device forensics permits the reconstruction of …


Distributed Computing And Artificial Intelligence, 12th International Conference, Sigeru Omatu, Qutaibah M. Malluhi, Sara Rodríguez González, Grzegorz Bocewicz, Edgardo Bucciarelli, Gianfranco Giulioni, Farkhund Iqbal Jan 2015

Distributed Computing And Artificial Intelligence, 12th International Conference, Sigeru Omatu, Qutaibah M. Malluhi, Sara Rodríguez González, Grzegorz Bocewicz, Edgardo Bucciarelli, Gianfranco Giulioni, Farkhund Iqbal

All Works

No abstract provided.


E-Mail Authorship Attribution Using Customized Associative Classification, Michael R. Schmid, Farkhund Iqbal, Benjamin C.M. Fung Jan 2015

E-Mail Authorship Attribution Using Customized Associative Classification, Michael R. Schmid, Farkhund Iqbal, Benjamin C.M. Fung

All Works

E-mail communication is often abused for conducting social engineering attacks including spamming, phishing, identity theft and for distributing malware. This is largely attributed to the problem of anonymity inherent in the standard electronic mail protocol. In the literature, authorship attribution is studied as a text categorization problem where the writing styles of individuals are modeled based on their previously written sample documents. The developed model is employed to identify the most plausible writer of the text. Unfortunately, most existing studies focus solely on improving predictive accuracy and not on the inherent value of the evidence collected. In this study, we …


A Service Oriented Broker-Based Approach For Dynamic Resource Discovery In Virtual Networks, Sleiman Rabah, May El Barachi, Nadjia Kara, Rachida Dssouli, Joey Paquet Jan 2015

A Service Oriented Broker-Based Approach For Dynamic Resource Discovery In Virtual Networks, Sleiman Rabah, May El Barachi, Nadjia Kara, Rachida Dssouli, Joey Paquet

All Works

© 2015, Rabah et al.; licensee Springer. In the past few years, the concept of network virtualization has received significant attention from industry and research fora. This concept applies virtualization to networking infrastructures by enabling the dynamic creation of several co-existing logical network instances (or virtual networks) over a shared physical network infrastructure (or substrate network). Due to the potential it offers in terms of diversifying existing networks and ensuring the co-existence of heterogeneous network architectures on top of shared substrates, network virtualization is often considered as an enabler of a polymorphic Internet and a cornerstone of the future Internet …


Enhancing Social Science Research In The Uae: An Open Source Software Solution University Of Sharjah (Uos) Case Study, Manar Abu Talib, Muhammed Abuodeh, Adhraa Almansoori, Arwa Alnauimi Jan 2015

Enhancing Social Science Research In The Uae: An Open Source Software Solution University Of Sharjah (Uos) Case Study, Manar Abu Talib, Muhammed Abuodeh, Adhraa Almansoori, Arwa Alnauimi

All Works

© 2015 The Manar Abu Talib, Muhammed AbuOdeh, Adhraa Almansoori and Arwa AlNauimi. Researchers, practitioners and social scientists all agree on the enormous importance of social science research in advancing human knowledge and informing public policy makers. The National Research Foundation, along with other organizations in the UAE, is leading the initiative to integrate the efforts of social research institutions in order to support the decision making process in the UAE. As indicated by a number of social researchers during the last forum held on May 29-30, 2012, at the Emirates Center for Strategic Studies and Research, Abu Dhabi, UAE, …


Factors Influencing Digital Forensic Investigations: Empirical Evaluation Of 12 Years Of Dubai Police Cases, Ibtesam Alawadhi, Janet Read, Andrew Marrington, Virginia Franqueira Jan 2015

Factors Influencing Digital Forensic Investigations: Empirical Evaluation Of 12 Years Of Dubai Police Cases, Ibtesam Alawadhi, Janet Read, Andrew Marrington, Virginia Franqueira

All Works

In Digital Forensics, the number of person-hours spent on investigation is a key factor which needs to be kept to a minimum whilst also paying close attention to the authenticity of the evidence. The literature describes challenges behind increasing person-hours and identifies several factors which contribute to this phenomenon. This paper reviews these factors and demonstrates that they do not wholly account for increases in investigation time. Using real case records from the Dubai Police, an extensive study explains the contribution of other factors to the increase in person-hours. We conclude this work by emphasizing on several factors affecting the …


Weaving Risk Identification Into Crowdsourcing Lifecycle, Faouzi Kamoun, Dima Alhadidi, Zakaria Maamar Jan 2015

Weaving Risk Identification Into Crowdsourcing Lifecycle, Faouzi Kamoun, Dima Alhadidi, Zakaria Maamar

All Works

© 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. Crowdsourcing enables companies and individuals as well to tap into the versatile knowledge, creativity, and talent of a large population of crowd contributors. Yet, crowdsourcing can expose companies to a myriad of risks that can have drastic impact on the profitability and competitive position. This paper presents a Risk Breakdown Structure (RBS) of crowdsourcing projects that spans the entire project's lifecycle. The paper first reports on a lifecycle model that captures the main phases of a crowdsourcing project. It then identifies …


Flipping The Classroom In An Academic Writing Course, Marion Engin, Senem Donanci Jun 2014

Flipping The Classroom In An Academic Writing Course, Marion Engin, Senem Donanci

All Works

This article describes a series of video lessons the authors prepared using the iPad application Educreations to teach elements of the academic essay in an English-medium university in the United Arab Emirates. The authors give a brief introduction to the topic, a rationale for flipping the classroom, and provide a step-by-step account of how the academic writing course progressed.