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Implementation of Learning Path in Process Control Model - Few e-Learning systems in pervasive environments take learning activities as a part of the learning process and give much flexibility to instructors to define a structural course which is helpful for students to navigate distributed learning resources. In this paper, we propose a process control model in Web-based e-Learning, and illustrate how to implement process control through learning path with workflow technology. This model improves the l...
Feed Source: comjnl.oxfordjournals.org

Detection Of Normal and Novel Behaviours In Ubiquitous Domestic Environments - The importance of ubiquitous environments has increased in recent years as it has been recognized as a paradigm that can improve the quality of life of many sectors of the population especially care of elderly people by providing automated environments that adapt and respond to its inhabitants' needs. The aim of the work presented here is to provide a solution to the problem of recognition and detection of human behaviours inside ubiquitous envi...
Feed Source: comjnl.oxfordjournals.org

A Policy-Driven Service Composition Method for Adaptation in Pervasive Computing Environment - Service composition allows distributed application, such as multimedia application, to be composed from atomic service units and to adapt dynamically to users' requirements and environment conditions in pervasive computing system. It augments the adaptation action space for the application of pervasive computing. According to the multidimensional QoS (Quality of Service) requirement of pervasive computing system, we proposed a comprehensive serv...
Feed Source: comjnl.oxfordjournals.org

Ant-based Energy-aware Disjoint Multipath Routing Algorithm for MANETs - Ant-based routing protocols for mobile ad hoc networks (MANETs) have been widely explored, but most of them are essentially single-path routing methods that tend to impose a heavy burden on the hosts along the shortest path from source to destination. In this paper, we combine swarm intelligence and node-disjoint multipath routing to alleviate these problems. A novel approach called ant-based energy-aware disjoint multipath routing algorithm (AE...
Feed Source: comjnl.oxfordjournals.org

A Rule-based Method for Improving Adaptability in Pervasive Systems - There are two types of dynamic elements in a pervasive system: the first is where a context varies with shifting environments, and the second is where variables are defined by the dynamic requirements of an application. This makes improving adaptability to dynamic change an important topic in pervasive systems research. Currently, most of the efforts targeting improvements in adaptability focus on context-related issues, other variables being si...
Feed Source: comjnl.oxfordjournals.org

Smart-Context: A Context Ontology for Pervasive Mobile Computing - This paper addresses context in intelligent context-aware systems to support personalised service provision and cooperative computing. Context processing, context modelling, ontology, and OWL are introduced and a context reasoning ontology presented. Context implementation reduces to a decision problem which is characterised as one of selecting from a number of potential options based on the relationship between the values that describe the inpu...
Feed Source: comjnl.oxfordjournals.org

Modelling Bidders in Sequential Automated Auctions - Auctions are mechanisms that formalize the rules with which automated trading schemes can be conducted, and in this paper we model the interaction of bidder and seller agents in sequential computerized auctions. We study the outcome of strategies that a designated ‘special bidder’ (SB) may follow in the presence of a collection of other bidders in an English auction, under the assumption that the SB can make bids based on its observa...
Feed Source: comjnl.oxfordjournals.org

A Simulation Model Supporting Time and Non-time Metrics for Web Service Composition - A next generation network (NGN) exploits advanced multiple broadband, quality of service (QoS)-enabled service technologies. The NGN is aimed at users and service-related functions, including web services. Recently, web service composition (WSC) has become a new approach for overcoming many difficult problems confronted by B2B e-commerce, inter-organization workflow management, enterprise application integration etc. Due to the uncertainty of th...
Feed Source: comjnl.oxfordjournals.org

Resource-Aware Multimedia Content Delivery: A Gambling Approach - In this paper, we propose a resource-aware solution to achieving reliable and scalable stream diffusion in a probabilistic model, i.e. where communication links and processes are subject to message losses and crashes, respectively. Our solution is resource-aware in the sense that it limits the memory consumption, by strictly scoping the knowledge each process has about the system, and the bandwidth available to each process, by assigning a fixed...
Feed Source: comjnl.oxfordjournals.org

02-26-2010 - Stop Thieves From Stealing Your Info + The Next Generation Of - Computer Tips ...
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02-25-2010 - What Is The Internet Really Made Of? + Leave Normal Scroll Spe - Computer Tips ...
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02-24-2010 - Google's Next Big Move + Is Your Computer "Telling" You Someth - Computer Tips ...
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02-23-2010 - Discover Microsoft's Vital Facts + Say Goodbye To File Extensi - Computer Tips ...
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02-22-2010 - A False Alarm From Windows? + Expand Your Search Abilities + I - Computer Tips ...
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02-19-2010 - The Trick To Lightning-Quick Folders + Access Your Bookmarks F - Computer Tips ...
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DNA Profiles Link Dope to Its Source - 09 Jul 03 Forensic scientists in the U.S. are applying DNA fingerprinting methods to the cannabis plant. They say the technique, which is being used to create a database of DNA profiles of different marijuana plants, will help them to trace the source of any sample. 'It links everybody together: the user, the distributor, the grower,' says the database's creator, Heather Miller Coyle of the Connecticut State Forensic Science Laboratory in Meriden...
Feed Source: www.newscientist.com

Mathematics: Does the Proof Stack Up? - by George Szpiro 03 Jul 03 Just under five years ago, Thomas Hales made a startling claim. In an e-mail he sent to dozens of mathematicians, Hales declared that he had used a series of computers to prove an idea that has evaded certain confirmation for 400 years. The subject of his message was Kepler's conjecture, proposed by the German astronomer Johannes Kepler, which states that the densest arrangement of spheres is one in which they are stack...
Feed Source: www.nature.com

Scientists Discover Planetary System Similar to Our Own - The image shows an impression by David A. Hardy of a possible scene from a moon orbiting the extra-solar planet in orbit around the star HD70642. Photo Credit: David A. Hardy. ...
Feed Source: www.nsf.gov

Hacker How-To Good Summer Reading - by Michelle Delio 27 Jun 03 Stealing the Network: How to Own the Boxby Ryan RussellSyngress, 330 pp., $49.95 Stealing The Network: How to Own the Box, a compendium of tales written by well-known hackers, is a perfect summer read. The stories are fictional. The technology and techniques described are very real. A warning: Those...
Feed Source: www.wired.com