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Research ArticleOpen accessEvery word in the titlePerformance Analysis of Downward Handoff Latency in a WLAN/GPRS Interworking SystemMandalaparty B.R. Murthy, Fredson A. PhiriThis study presents the performance analysis of a new tight coupling based WLAN/GPRS interworking architecture. The effects of network traffic on downward handoff latency are investigated. The results indicate that increasing WLAN traffic increases the overall downward handoff latency more than increasing GPRS traffic. On the other hand, increasing GPRS traffic results in higher packet buffering requirements at the Serving … …Journal of Computer Science, Vol. 1, Issue 1 · 31 Mar 2005 · 6,875 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleEstimation of Natural and Artificial Recharge of Shahreza Plain Groundwater in Isfahan Using CRD and Hantush ModelsMohsen Nekooei, Jahangir Abedi Koupai, Saeid Eslamian et al.Cumulative Rainfall Departure model (CRD) is widely used for estimation of ground natural recharge. This model is based on the groundwater balance and it requires random parameters. Moreover, an increase in the static level under artificial recharge facility is simulated using diffusion equations. Since Shahreza Plain is located in an arid and semi-arid area and given that rainfall is the … …American Journal of Engineering and Applied Sciences, Vol. 13, Issue 2 · 17 Jun 2020 · 6,802 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleArsenic, Nickel and Iron Concentration levels in Water Samples from Hand-Dug Wells from Ugbe AkokoO.M. Afolabi, I.R. Ajayi, R.S. Fayose et al.Problem statement: The concentration of Arsenic, Nickel and Iron from twenty water samples from Ugbe Akoko in Ondo state, Nigeria was determined with atomic absorption spectrometer and conductivity meter. Approach: The aims are to determine the level of concentration of the three heavy metals in the well water, the relationship between the WHO reference standard for pure water and the … …American Journal of Applied Sciences, Vol. 8, Issue 2 · 28 Feb 2011 · 7,628 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleThe Hanshaw Helm-Stevens Rapid Prototype Instructional Design Model: Examining the Dimensions of Structure and Dialogue within the Framework of Higher EducationRoxanne Helm-Stevens, George Hanshaw, Joseph KimThis paper examines the implementation of an integrative rapid prototype instructional design model within the framework of higher education. The researchers present the Hanshaw Helm-Stevens Rapid Prototyping (HHSRP) model utilized to develop online courses for two graduate programs, including 33 courses, housed in the School of Business and Management. The evaluation came after a two-year partnership between the Office of … …American Journal of Economics and Business Administration, Vol. 11, Issue 1 · 15 Apr 2019 · 8,126 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleResponse of SAI Afferents May Play a Role in the Perception of Velvet Hand IllusionAbdullah Chami, Masahiro Ohka, Yuji Kawabe, Hanafiah Bin YussofProblem statement: We revealed the reason behind a haptic illusion called the Velvet Hand Illusion (VHI) by FEM analysis. In VHI, a person rubs his/her hands together on both sides of wires strung through a frame and produces the sensation of rubbing a very smooth and soft surface like velvet. We focus on VHI to determine the specifications of an … …Journal of Computer Science, Vol. 6, Issue 8 · 31 Aug 2010 · 6,997 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Tool to Develop Arabic Handwriting Recognition System Using Genetic ApproachHanan Aljuaid, Zulkifli Muhammad, Muhammad SarfrazProblem statement: Significant movement has been made in handwriting recognition technology over the last few years. Up until now, Arabic handwriting recognition systems have been limited to small and medium vocabulary applications, since most of them often rely on a database during the recognition process. The facility of dealing with large database, however, opens up many more applications. Approach: This … …Journal of Computer Science, Vol. 6, Issue 6 · 30 Jun 2010 · 7,530 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleComparative Analysis of UGT1A9 Genetic Polymorphisms between Chinese Han and Tibetan PopulationsWei Yan, Jian Cui, Yuewen Wang et al.Although various polymorphisms have been identified in the UGT1A9 gene in the main sorts of ethnic groups in the world, no investigations have been focused on the Chinese Tibetan populations and the comparison between Chinese Tibetan and Han populations to date. This study was designed to systematically compare genetic differences between the two populations. We investigated the functional regions of … …Current Research in Medicine, Vol. 3, Issue 2 · 23 Aug 2012 · 7,647 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleA Comparative Study of Resampling, Cost-Sensitive, and Ensemble Techniques for Handling Class Imbalance in Indonesian Financial DataGunawan Kurnia, Ditdit Nugeraha UtamaHandling class imbalance is a critical challenge in machine learning applications, particularly in financial domains where minority instances often represent significant anomalies such as fraud or audit risks. Various oversampling and undersampling methods were tested, alongside cost-sensitive adjustments and ensemble models including Random Forest, AdaBoost, Gradient Boosting, and XGBoost. The evaluation, based on 10-fold stratified cross-validation and performance metrics such … …Journal of Computer Science, Vol. 22, Issue 2 · 27 Feb 2026 · 1,882 accessesView PDFCite
Research ArticleOpen accessEvery word in the titleImproving the Eastern Arabic Hand Written Digits Recognition Using Deep LearningHamdy Morsy, Hashim M. Hasanien et al.Convolutional neural networks CNNs or simply deep learning was designed for the challenging of object recognition such as digits, characters and even objects that can be classified. The deep convolutional networks are designed to be trained through using a large dataset of the classes. The degree of complexity of recognizing handwritten digits are different from person to person and even … …Journal of Computer Science, Vol. 21, Issue 6 · 27 May 2025 · 4,941 accessesView PDFCite