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115 results for “Hierarchical”
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Research ArticleOpen accessIn the abstractAn Efficient Unified K-Means Clustering Technique for Microarray Gene Expression DataP. Valarmathie, K. Dinakaran, T. RavichandranProblem statement: Using microarray techniques one could monitor the expressions levels of thousands of genes simultaneously. One challenge was how to derive meaningful insights into expressed data. This might be carried out by clustering techniques such as hierarchical and k-means, but most of the clustering techniques were largely heuristic in nature and are associated with some unresolved issues like how … …Journal of Computer Science, Vol. 7, Issue 7 · 28 Jun 2011 · 6,915 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Study of Urban Quality of Life in a Developing CountrySedigheh Lotfi, Amin Faraji, Husain Hataminejad, Ahmad PourahmadProblem statement: The rapid growth of urbanization has led to degradation of quality of life in many developing countries. The qualitative approach towards development concepts provided background for studying the object of quality of life. This concept was declared by Raymond Bauer in 1966 in response to the increase of urban crisis. Today, quality of life refers to the capacity … …Journal of Social Sciences, Vol. 7, Issue 2 · 21 Mar 2011 · 8,341 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Effective Contention Aware Stable Path Finding Approach to Provide Quality of Service in Mobile Ad hoc NetworksD. S. Thenmozhi, M. RajaramProblem statement: The application of Mobile Ad hoc NETworks (MANETs) has been increasing every day. Most applications that attract interest for use in current wired networks (e.g. video conferencing, on line movies and camera enabled instant messenger) would attract interest for MANETs also. Many applications that use MANETs include multimedia data that require Quality of Service (QoS) support for effective … …Journal of Computer Science, Vol. 7, Issue 3 · 7 Mar 2011 · 6,745 accessesView PDFCite
Research ArticleOpen accessIn the abstractA New Scalable and Reliable Cost Effective Key Agreement Protocol for Secure Group CommunicationS. Jabeen Begum, Dr. T. PurusothamanProblem statement: In a heterogeneous environment, for a secure multicast communication, the group members have to share a secret key which is used to encrypt/decrypt the secret messages among the members. The Secure Group Communication of large scale multicast group in a dynamic environment is more complex than securing one-to-one communication due to the inherent scalability issue of group key … …Journal of Computer Science, Vol. 7, Issue 3 · 7 Mar 2011 · 6,966 accessesView PDFCite
Research ArticleOpen accessIn the abstractObject Oriented Modeling of Thermostatically Controlled Devices for Cold Load Pick-upAlexandre de Assis Mota, Lia Toledo Moreira Mota, Claudia Cotrim PezzutoProblem statement: During service restoration, the power level at buses can significantly differ from the one presented under steady-state conditions, demanding an amount of electric power significantly higher than the normal load. Hence, their post-outage behavior must be adequately forecasted in order to permit the development of reliable restoration plans, or to avoid inadequate actions that may lead to a … …Journal of Computer Science, Vol. 7, Issue 2 · 25 Feb 2011 · 6,851 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Symbolic Threshold: A Dynamic form of the Mind as an Expression of Radiant ThinkingFelice Corona, Francesco Perrotta, Emilia Tartaglia Polcini, Carla CozzarelliProblem statement: The definition of "symbolic species" used by Terrence W. Deacon means more complete the process of monitoring the encounter between semiotics and cognitive sciences neurosemiotics better defined. Approach: The mechanism of the symbolic threshold means that it is put in place an approach to reality no longer seen as a representative of simple association, but under a restructuring … …Neuroscience International, Vol. 1, Issue 2 · 31 Dec 2010 · 16,063 accessesView PDFCite
Research ArticleOpen accessIn the abstractStrength Pareto Evolutionary Algorithm based Multi-Objective Optimization for Shortest Path Routing Problem in Computer NetworksSubbaraj Potti, Chitra ChinnasamyProblem statement: A new multi-objective approach, Strength Pareto Evolutionary Algorithm (SPEA), is presented in this paper to solve the shortest path routing problem. The routing problem is formulated as a multi-objective mathematical programming problem which attempts to minimize both cost and delay objectives simultaneously. Approach: SPEA handles the shortest path routing problem as a true multi-objective optimization problem with competing … …Journal of Computer Science, Vol. 7, Issue 1 · 16 Dec 2010 · 8,221 accessesView PDFCite
Research ArticleOpen accessIn the abstractModeling A Multi-Compartments Biological System with Membrane ComputingRavie Chandren Muniyandi, Abdullah Mohd. ZinProblem statement: Most of the biological systems have been hierarchical in structure with processes interacting between different compartments. Membrane computing formalism has provided modeling capabilities in representing the structure of biological systems. Approach: This study was carried to investigate the modeling of a multi-compartment biological system by using membrane computing formalism. The hormone-induced calcium oscillations in liver cells which was … …Journal of Computer Science, Vol. 6, Issue 10 · 10 Aug 2010 · 7,258 accessesView PDFCite
Research ArticleOpen accessIn the abstractIndoor Navigation to Support the Blind Person Using True Pathway within the MapAbbas M. Ali, Md Jan NordinProblem statement: Map creation remains a very active field in the robotics and AI community, however it contains some challenge points like data association and the high degree of accuracy of localization which are seems to be difficult in some cases, more than that, most of these study focus on the robot navigation, without any consideration for the semantic of … …Journal of Computer Science, Vol. 6, Issue 7 · 31 Jul 2010 · 6,837 accessesView PDFCite
Research ArticleOpen accessIn the abstractPredictors of Home Health Care Service Use by Anglo American, Mexican American and South Korean EldersMyunghan Choi, Janice D. Crist, Marianne McCarthy, Seon Hae WooProblem statement: This study was designed to identify predictors of the use of home health care services by elders in different ethnic groups. Approach: A cross-sectional study was conducted with convenient sample of Anglo elders (N = 57), Mexican American elders (N = 56) and elders in South Korea (N = 83). Hierarchical multiple regression analysis was conducted. Results: The … …International Journal of Research in Nursing, Vol. 1, Issue 1 · 30 Jun 2010 · 9,496 accessesView PDFCite