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55 articles for “Dual Problem”
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Research ArticleOpen accessIn the abstractA New Engineering Method for Fuzzy Reliability Analysis of Surge Control in Centrifugal CompressorAhmed Hafaifa, Ferhat Laaouad, Moulod GuemanaProblem statement: The surge phenomenon in the centrifugal compressor, the non-linearities and uncertainties of the compression system make it impossible to use a conventional controller over a wide range of operation. Approach: A new dual fuzzy controller for nonlinear model of compression system was proposed in this study. This fuzzy controller was designed that consisted of active surge control and … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 8,229 accessesView PDFCite
Research ArticleOpen accessIn the abstractSorption of Phenols: Influence of Groundwater pH and of Soil Organic Carbon ContentSilvia Fiore, Maria Chiara ZanettiProblem statement: Physical and chemical properties of soil, groundwater and pollutants deeply influenced the type and the strength of sorption phenomena involving hydrophobic organic contaminants: Soil fraction of organic carbon (foc) and cation exchange capacity, groundwater pH and pollutants hydrophobicity were with undoubtedly the predominant issues. Approach: In this study an experimental study of the sorption of phenol and 2-nitrophenol … …American Journal of Environmental Sciences, Vol. 5, Issue 4 · 31 Aug 2009 · 7,010 accessesView PDFCite
Research ArticleOpen accessIn the abstractEffect of Intravenous Ketamine Administration on Blood Glucose Levels in Conscious RabbitsSuleiman I. Sharif, Hanan A. AbouazraProblem statement: The intravenous general anaesthetic ketamine has been shown to produce changes in blood glucose levels. It is important to study the pharmacological basis of such an effect. Approach: The influence of varying doses of ketamine administered intravenously was studied in conscious rabbits. Serum glucose was determined by blood glucose method using an enzymatic PAP250 kit. Results: Low doses … …American Journal of Pharmacology and Toxicology, Vol. 4, Issue 2 · 30 Jun 2009 · 9,950 accessesView PDFCite
Research ArticleOpen accessIn the abstractLow Power Phase Locked Loop Frequency Synthesizer for 2.4 GHz Band ZigbeeNesreen Mahmoud Hammam Ismail, Masuri OthmanProblem statement: Wireless communication systems are required for many applications. There are different standards for these systems. IEEE 802.15.4 defines the communication system standard for zigbee. This study discussed designing one of the blocks of zigbee transceiver which is the Phase Locked Loop (PLL). A major target for any communication systems is saving battery power, especially for zigbee as it … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 2 · 30 Jun 2009 · 8,061 accessesView PDFCite
Research ArticleOpen accessIn the abstractBiological Control of Sclerotinia sclerotiorum, Causal Agent of Sunflower Head and Stem Rot Disease, by Use of Soil borne Actinomycetes IsolatesF. Baniasadi, G. H. Shahidi Bonjar, A. Baghizadeh et al.Problem statement: High level of biosafety and non adverse effects on the environment of biocontrol strategies of pest management, are priorities of tomorrow's world agriculture. Actinomycetes are active biocontrol agents due to their antagonistic properties against wide range of plant pathogens particularly fungi. Fungal pathogens are liable for a big part of damages in agriculture economy. Approach: In the present … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 2 · 30 Jun 2009 · 11,169 accessesView PDFCite
Research ArticleOpen accessIn the abstractTEC and Scintillation Study of Equatorial Ionosphere: A Month Campaign over Sipitang and Parit Raja Stations, MalaysiaM. Abdullah, A. F.M. Zain, Y. H. Ho, S. AbdullahProblem Statement: Ionospheric scintillations, which cause significant effects on satellite signals for communication and navigation, often takes place in equatorial region such as Malaysia. However, this disturbance are not fully understand due to few studies performed. This research reports the study and monitoring activity on Total Electron Content (TEC) and ionospheric scintillation in Malaysia using GPS measurements. Approach: One dual-frequency … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 1 · 31 Mar 2009 · 9,506 accessesView PDFCite
Research ArticleOpen accessIn the abstractThe Solution of Heat Conduction Equation with Mixed Boundary ConditionsNaser AbdelrazaqThe study is devoted to determine a solution for a non-stationary heat equation in axial symmetric cylindrical coordinates under mixed discontinuous boundary of the first and second kind conditions, with the aid of a Laplace transform and separation of variables method used to solve the considered problem which is the dual integral equations method. …Journal of Mathematics and Statistics, Vol. 2, Issue 1 · 31 Mar 2006 · 7,817 accessesView PDFCite
Research ArticleOpen accessIn the abstractA Soft Sensor Modelling of Biomass Concentration during Fermentation using Accurate Incremental Online v-Support Vector Regression Learning AlgorithmBinjie Gu, Feng PanIn order to model real fermentation process, a soft sensor modelling of biomass concentration during fermentation using accurate incremental online ν-Support Vector Regression (ν-SVR) learning algorithm was proposed. Firstly, an accurate incremental online ν-SVR learning algorithm was proposed. This algorithm solved the two complications introduced in the dual problem based on the equivalent formulation of ν-SVR. Moreover, it addressed the … …American Journal of Biochemistry and Biotechnology, Vol. 11, Issue 3 · 8 Aug 2015 · 7,328 accessesView PDFCite
Research ArticleOpen accessIn the abstractCOMPUTATIONAL MODEL TO GENERATE CASE-INFLECTED FORMS OF MASCULINE NOUNS FOR WORD SEARCH IN SANSKRIT E-TEXTKasmir Raja S.V., V. Rajitha, Meenakshi LakshmananThe problem of word search in Sanskrit is inseparable from complexities that include those caused by euphonic conjunctions and case-inflections. The case-inflectional forms of a noun normally number 24 owing to the fact that in Sanskrit there are eight cases and three numbers-singular, dual and plural. The traditional method of generating these inflectional forms is rather elaborate owing to the … …Journal of Computer Science, Vol. 10, Issue 11 · 13 Dec 2014 · 7,904 accessesView PDFCite
Research ArticleOpen accessIn the abstractENHANCED ENCAPSULATED SECURITY PAYLOAD A NEW MECHANISM TO SECURE INTERNET PROTOCOL VERSION 6 OVER INTERNET PROTOCOL VERSION 4Rosilah Hassan, Amjed Sid Ahmed, Nur Effendy Othman, Samer SamiA considerable amount of time will be needed before each system in the Internet can convert from Internet Protocol version 4 (IPv4) to Internet Protocol version 6 (IPv6). Three strategies have been proposed by the Internet Engineer Task Force (IETF) to help the transition from IPv4 to IPv6 which are dual stack, header translation and tunneling. Tunneling is used when … …Journal of Computer Science, Vol. 10, Issue 7 · 17 Jun 2014 · 7,116 accessesView PDFCite