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Research ArticleOpen accessIn the abstractA Preamble-Based Frequency Offset Compensation Scheme in Multiple Input Multiple Output Orthogonal Frequency Division Multiplexing SystemsElnaz Ershadi, Hamidreza BakhshiProblem statement: Combining the properties of Multiple Input Multiple Output (MIMO) systems with those of Orthogonal Frequency Division Multiplexing (OFDM), MIMO-OFDM was considered to be a promising technique in the future of wireless communications. However, its sensitivity to frequency offsets which results in Inter-Carrier Interferences (ICIs) makes it necessary to use an exact frequency offset estimation method for data recovery … …Journal of Computer Science, Vol. 6, Issue 4 · 30 Apr 2010 · 7,574 accessesView PDFCite
Research ArticleOpen accessIn the abstractMethicilin Resistant Staphylococcus aureus Carriage amongst Healthcare Workers of the Critical Care Units in a Nigerian HospitalA. Fadeyi, B.O. Bolaji, O.O. Oyedepo et al.Problem statement: Methicilin Resistant Staphylococcus Aureus (MRSA) Nosocomial Infection (NI) outbreaks and prevalence among various populations are well reported in literature particularly for developed countries. NI due to MRSA is a known cause of increased hospital stay, cost, morbidity and mortality especially among the critically ill. There is paucity of information on MRSA in developing nations including the carriage by … …American Journal of Infectious Diseases, Vol. 6, Issue 1 · 31 Mar 2010 · 9,104 accessesView PDFCite
Research ArticleOpen accessIn the abstractAnti-Toxoplasma gondii Antibodies in Haemodialysis PatientsKavous Solhjoo, Abdolreza Sotoodeh Jahromi, Ayeh Parnian-RadProblem statement: In situations of immunodeficiency, Toxoplasma gondii emerges as a life-threatening infection. Toxoplasma gondii is transmitted parenterally, flourish in immunocompromised subjects and, most toxoplasma infections are asymptomatic. Studies have shown that there is a immunodeficiency in renal failure patient such as hemodialysis patients and these patients have a high risk for many infections. There is no evidence about toxoplasmosis … …American Journal of Infectious Diseases, Vol. 6, Issue 1 · 31 Mar 2010 · 9,367 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Applied Using Local Wisdom to Making Ironware for Community Economic DevelopmentChalor Yaekkhoksung, Songkoon Chantachon, Prasopsuk RitthidetProblem statement: Arts and craft were important for economics and society of northeastern people in Thailand: For all that, local wisdom to make ironware lack interest from society. This research aimed to an applied using local wisdom to make ironware for community economic development. Approach: Research method was a qualitative research which studied populations who lived in 5 provinces: Khai … …Journal of Social Sciences, Vol. 5, Issue 4 · 31 Dec 2009 · 7,809 accessesView PDFCite
Research ArticleOpen accessIn the abstractAn Eigenstructure Assignment for a Static Synchronous CompensatorAhmad N. Al-HusbanProblem statement: Power flow through an AC transmission line is influenced by three basic electrical parameters, which are line impedance, magnitudes and phase-shift angle between the sending and receiving voltages. Therefore, the change in any of the three basic parameters means a change in the power flow through the transmission line. The aims of this research paper are: increase the … …American Journal of Engineering and Applied Sciences, Vol. 2, Issue 4 · 31 Dec 2009 · 7,696 accessesView PDFCite
Research ArticleOpen accessIn the abstractKnowledge of the Most-at-Risk Populations about Human Immunodeficiency Virus PreventionA. Ebadian, V. Alli, H. Sedghi et al.Problem statement: In this study we tried to assess the knowledge of general population (15-45 years), injecting drug users, female sex workers, MSM and male prisoners about HIV prevention in Iran. Approach: Respondents are asked the following set of prompted questions: (a) Can we reduce the risk of HIV transmission by having sex with only one uninfected partner who has … …American Journal of Applied Sciences, Vol. 6, Issue 11 · 30 Nov 2009 · 6,542 accessesView PDFCite
Research ArticleOpen accessIn the abstractExpecting the Unexpected Macroeconomic Volatility and Climate PolicyGajendra Singh ChauhanProblem statement: Analysts have been comparing a policy scenario with a baseline scenario of future economic conditions without the policy, to estimate the emissions reductions and costs of a climate policy. Both scenarios required assumptions about the future course of numerous factors such as population growth, technical change and non-climate policies like taxes. Approach: The purpose of this study was … …American Journal of Economics and Business Administration, Vol. 1, Issue 3 · 30 Sep 2009 · 7,496 accessesView PDFCite
Research ArticleOpen accessIn the abstractConcentration and Physicochemical Properties of Chitosan Derivatives Determine the Induction of Defense Responses in Roots and Leaves of Tobacco (Nicotiana tabacum) PlantsAlejandro B. Falcón-Rodríguez, Juan C. Cabrera, Eduardo Ortega, Miguel Ángel Martínez-TéllezProblem statement: The chitosan derivatives promote diverse defensive responses in plants, which are affected by chitosan chemical features and concentration. Glucanase (EC 3.2.1.6), Phenylalanine Ammonia-Lyase (PAL, EC 4.3.1.5) and peroxidase (POD, EC 1.11.1.6) are key enzymes in tobacco defense responses. Thus, the aim of this study was to know the behavior of their enzymatic activity in leaves and roots of … …American Journal of Agricultural and Biological Sciences, Vol. 4, Issue 3 · 30 Sep 2009 · 9,270 accessesView PDFCite
Research ArticleOpen accessIn the abstractDesign of Modified Adaptive Huffman Data Compression Algorithm for Wireless Sensor NetworkC. Tharini, P. Vanaja RanjanProblem statement: Efficient utilization of energy has been a core area of research in wireless sensor networks. Sensor nodes deployed in a network are battery operated. As batteries cannot be recharged frequently in the field setting, energy optimization becomes paramount in prolonging the battery-life and, consequently, the network lifetime. The communication module utilizes a major part of the energy expenditure … …Journal of Computer Science, Vol. 5, Issue 6 · 30 Jun 2009 · 8,353 accessesView PDFCite
Research ArticleOpen accessIn the abstractSolving the Near-Far Problem in Dynamic Frequency Hopping-Optical Code Division Multiple Access using Power ControlW. J.M. Al-galbi, M. Mokhtar, A. F. Abas et al.Problem statement: In this study, a distributed power control algorithm is proposed for Dynamic Frequency Hopping Optical-CDMA (DFH-OCDMA) system. Approach: In general, the DFH-OCDMA can support higher number of simultaneous users compared to other OCDMA techniques. However, the performance of such system degrades significantly as the received power does lower than its minimum threshold. Results: This may obviously occur in … …Journal of Computer Science, Vol. 5, Issue 6 · 30 Jun 2009 · 7,522 accessesView PDFCite