Search results for "communication technology"
showing 10 items of 360 documents
LMI-based H∞ synchronization of second-order neutral master-slave systems using delayed output feedback control
2009
Submitted version of an article published in the journal: International Journal of Control, Automation and Systems. The original publication is available at www.springerlink.com: http://dx.doi.org/10.1007/s12555-009-0306-5 The H∞ synchronization problem of the master and slave structure of a second-order neutral master-slave systems with time-varying delays is presented in this paper. Delay-dependent sufficient conditions for the design of a delayed output-feedback control are given by Lyapunov-Krasovskii method in terms of a linear matrix inequality (LMI). A controller, which guarantees H∞ synchronization of the master and slave structure using some free weighting matrices, is then develop…
Distributed ASM - Pitfalls and solutions
2014
Published version of a chapter in the book: Abstract State Machines, Alloy, B, TLA, VDM, and Z. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-662-43652-3_18 While sequential Abstract State Machines (ASM) capture the essence of sequential computation, it is not clear that this is true of distributed ASM. This paper looks at two kinds of distributed process, one based on a global state and one based on variable access. Their commonalities are extracted and conclusions for the general understanding of distributed computation are drawn, providing integration between global state and variable access.
Velocity estimation in wideband mobile stations equipped with multiple antennas
2009
©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. Article also available from publisher: http://dx.doi.org/10.1109/VETECS.2009.5073907 A new method is proposed for estimating the velocity of wideband mobile stations (MSs) equipped with multiple antennas. The MS speed is determined using the well-known relationship between the direction-of-arrivals (DOAs) and the Doppler frequency shifts experienced by the mult…
The role of practitioners in helping persons make effective use of information and communication technology in career interventions
2019
We examine the role of counselors and other practitioners in delivering career interventions using Information and Communication Technology (ICT). Current benefits and limitations of ICT use provide the basis for recommendations. Potential benefits of increased ICT engagement include cost-effectiveness and improved access to resources and support. Potential limitations include poor assessment and information quality, limited practitioner support when needed, problems with distance intervention and social media, confidentiality of client records, inequality of access, inadequate competencies, and poor implementation. Specific practitioner roles are identified, and those related to social med…
Security in Mobile Wireless Sensor Networks – A Survey
2011
Published version of an article in the journal: Journal of Communications. Also available from the publisher at: http://dx.doi.org/10.4304/jcm.6.2.128-142. OA Thanks to recent advances in robotics, sensors and wireless communications, it is feasible to develop a variety of new architectures for Mobile Wireless Sensor Networks (MWSNs) that play an important role in various applications such as battlefield surveillance, harbor monitoring, etc. However, due to the dynamic of mobile network topology in MWSNs, many new security challenges have emerged. In this article, we give a survey on the state of the art technologies in security aspects of MWSNs. We review existing work that provides securi…
A collaborative writing approach to wikis: Design, implementation, and evaluation
2011
Published version of an article from the journal:Issues in Informing Science and Information Technology. Also available from the publisher: http://iisit.org/Vol8/IISITv8p431-449Hadjerrouit224.pdf Wikis provide teachers with potentially significant opportunities for creating socially engaged tasks that require active student participation and collaboration. Wikis allow students to work together to develop content on the web, giving them a sense of how writing can be carried out collaboratively. Collaborative writing offer opportunities not only to practice literature review, academic reading and writing, but also to stimulate reflection, knowledge sharing, and critical thinking. However, des…
Editorial: Special Issue on "5G Workshop on Networks, Services and Applications" : topics from the 1st Joint Workshop between Center for TeleInFrastr…
2010
Published version of an article in Wireless Personal Communications, 57(3), 313-316. Also available from the publisher at http://dx.doi.org/10.1007/s11277-010-0068-7 The first joint workshop between Center for TeleInFrastruktur (CTIF), Denmark and Center for Wireless Innovation (CWI), Norway, was held in Aalborg, Denmark on October 8, 2009, focusing on yet undefined term, "5G mobile networks". This Special Issue features eleven selected papers based on networks, services and applications aspects of 5G.
Developing web-based learning resources in school education: a user-centered approach
2010
Published version of an article from the journal:Interdisciplinary Journal of Knowledge and Learning Objects. Also available from the publisher:http://www.ijello.org/Volume6/IJELLOv6p115-135Hadjerrouit688.pdf Web-based learning resources (WBLRs) are potentially powerful tools for enhancing teachingand learning processes in school education. They can provide teachers and learners with a widerange of new and exciting experiences that are not possible in a traditional classroom. However,WBLRs are still the domain of technical and software experts rather than teachers and learners.As a result, much of the development of WBLRs is carried out without a true understanding ofissues pertinent to lea…
A novel policy-driven reversible anonymisation scheme for XML-based services
2015
Author's version of an article in the journal: Information Systems. Also available from the publisher at: http://dx.doi.org/10.1016/j.is.2014.05.007 This paper proposes a reversible anonymisation scheme for XML messages that supports fine-grained enforcement of XACML-based privacy policies. Reversible anonymisation means that information in XML messages is anonymised, however the information required to reverse the anonymisation is cryptographically protected in the messages. The policy can control access down to octet ranges of individual elements or attributes in XML messages. The reversible anonymisation protocol effectively implements a multi-level privacy and security based approach, s…
Kan brist i alarmkjeden unngås? : Delphistudie med funn av faktorer som er viktige for kvalitetssikring i et velferdsteknologisk responssenter
2016
Masteroppgave i helse- og sosialinformatikk- Universitetet i Agder, 2016 The future brings with it an increased number of elderly in need of aid or assistance. One way of meeting these challenges is an increased usage of healthcare technological solutions. Through media, it is illustrated that there have been several unfortunate incidents related to the handling of personal alarm systems. This has happened not only when receiving an alarm at the responsecenter, but also with the turn-out at the place of emergency. The goal with this study is to identify important factors that are necessary to secure the quality at the responsecenters when the alarms are received and how they are forwarded a…