Research ArticleOpen accessIn the abstractRainfall Attenuation and Rainfall Rate Measurements in Malaysia Comparison with Prediction ModelsMandeep Singh Jit Singh, Syed Idris Syed Hassan, Mohd Fadzil AinAttenuation due to rain is a primary cause of communication impairment on satellite-earth paths, especially above 10GHz. Rainfall is a serious source of attenuation at such a frequency. This paper presents the characteristics of rain distribution in USM based on measured one minute rain rate. For attenuation of rain, predictions models like ITU and VIHT (Variable Isotherm Height Technique) model … …American Journal of Applied Sciences, Vol. 4, Issue 1 · 30 Apr 2007 · 6,939 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Framework for Distributed Dynamic Load Balancing in Heterogeneous ClusterNeeraj Nehra, R. B. Patel, V. K. BhatDistributed Dynamic load balancing (DDLB) is an important system function destined to distribute workload among available processors to improve throughput and/or execution times of parallel computer in Cluster Computing. Instead of balancing the load in cluster by process migration, or by moving an entire process to a less loaded computer, we make an attempt to balance load by splitting processes … …Journal of Computer Science, Vol. 3, Issue 1 · 31 Jan 2007 · 8,732 accessesView PDFCite
Research ArticleOpen accessIn the abstractMobile Agents in Heterogeneous Networks: A Look on PerformanceR. B. Patel, Neeraj GoelMobile agents can be seen as a new paradigm for distributed computing. One characteristic of mobile agents is their autonomy and pro-activity. This article present a framework designed on top of PMADE (Platform for Mobile Agent Distribution and Execution) to support our research in this domain. Our framework consists of three modules. The Map Module collects information on the available … …Journal of Computer Science, Vol. 2, Issue 11 · 30 Nov 2006 · 6,493 accessesView PDFCite
Research ArticleOpen accessIn the abstractCluster Computing: A Mobile Code ApproachR. B. Patel, Manpreet SinghCluster computing harnesses the combined computing power of multiple processors in a parallel configuration. Cluster Computing environments built from commodity hardware have provided a cost-effective solution for many scientific and high-performance applications. In this paper we have presented design and implementation of a cluster based framework using mobile code. The cluster implementation involves the designing of a server named MCLUSTER … …Journal of Computer Science, Vol. 2, Issue 10 · 31 Oct 2006 · 6,719 accessesView PDFCite
Research ArticleOpen accessIn the abstractModelling and Forecasting Volatility of Returns on the Ghana Stock Exchange Using Garch ModelsFrimpong Joseph Magnus, Oteng-Abayie Eric FosuThis paper models and forecasts volatility (conditional variance) on the Ghana Stock Exchange using a random walk (RW), GARCH(1,1), EGARCH(1,1), and TGARCH(1,1) models. The unique ‘three days a week’ Databank Stock Index (DSI) was used to study the dynamics of the Ghana stock market volatility over a 10-year period. The competing volatility models were estimated and their specification and forecast … …American Journal of Applied Sciences, Vol. 3, Issue 10 · 31 Oct 2006 · 7,554 accessesView PDFCite
Research ArticleOpen accessIn the abstractChaotic Attitude Tumbling of Satellite in Magnetic FieldRashmi Bhardwaj, Parsan KaurIn this study, the half width of the chaotic separatrix has been estimated by chrikov's criterion. Through surface of section method, it has been observed that the magnetic torque parameter, the eccentricity of the orbit and the mass distribution parameter play an important in changing the regular motion into chaotic one. …American Journal of Applied Sciences, Vol. 3, Issue 10 · 31 Oct 2006 · 6,611 accessesView PDFCite
Research ArticleOpen accessIn the abstractAge Difference in Immunophenotype of Acute LeukemiaKazunori Nakase, Mary Sartor, Kenneth BradstockWe examined the immunophenotype of 880 cases with acute leukemia and analyzed their age difference in relation to the morphological subtype and the karyotype. We divided the patients into 3 age groups: child (0-15 years), adult (16-59 years) and elderly (60 years and older) group. The diagnoses based on the French-American-British (FAB) criteria and the immunophenotype as follows: 453 patients … …American Journal of Immunology, Vol. 2, Issue 3 · 30 Sep 2006 · 6,943 accessesView PDFCite
Research ArticleOpen accessIn the abstractLoad Balancing on Open Networks: A Mobile Agent ApproachR. B. Patel, Neetu AggarwalIn order to disperse the load on a Web server, generally the server cluster is configured to distribute access requests, or mirror servers are distributed geographically on different networks. Use of the Internet and the World-Wide-Web (WWW) has become widespread in recent years and mobile agent technology has proliferated at an equally rapid rate to evenly distribute the requests to … …Journal of Computer Science, Vol. 2, Issue 4 · 30 Apr 2006 · 6,620 accessesView PDFCite
Research ArticleOpen accessIn the abstractSoftware Process Modeling Using Role and CoordinationAtil Fadila, Ghoul Said, Bounour NoraThe term software process joins all activities that have to be achieved in order to develop software. It has been shown that modeling such processes is difficult and expensive task. It's confirmed by diversity of software processes modeling approaches which are however, not satisfactory. This study deals with an area of growing importance and presents a role- and coordination- based … …Journal of Computer Science, Vol. 2, Issue 4 · 30 Apr 2006 · 6,575 accessesView PDFCite