136 results for “High Gain”

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Research ArticleOpen accessIn the abstractSecure Authentication Technique for Data Aggregation in Wireless Sensor NetworksV. Bhoopathy, R. M.S. ParvathiProblem statement: In Wireless Sensor Networks (WSN), serious security threat is caused by node capture attacks where an adversary gains full control over a sensor node through direct physical access. Approach: This creates a high risk of data confidentiality. Results: We propose a secure authentication technique for data aggregation in WSN. During first round of data aggregation, the aggregator upon … …Journal of Computer Science, Vol. 8, Issue 2 · 24 Jan 2012 · 7,286 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCoherent Polarization Shift Keying Modulated Free Space Optical Links Over a Gamma-Gamma Turbulence ChannelX. Tang, Z. Ghassemlooy, S. Rajbhandari et al.Problem statement: The optical signal propagating through the Free Space Optical (FSO) channel suffers from irradiance and phase fluctuations caused by the atmospheric turbulence, which results in Bit Error Rate (BER) performance degradation. Approach: In this study the performance of the Multilevel Coherent Polarization Shift Keying (M-POLSK) based FSO communication system operating over the gamma-gamma turbulence channel is investigated. To … …American Journal of Engineering and Applied Sciences, Vol. 4, Issue 4 · 18 Jan 2012 · 7,954 accessesView PDF Cite

Research ArticleOpen accessIn the abstractToxicity evaluation of yoyo 'cleanser' bitters and fields Swedish bitters herbal preparations following sub-chronic administration in ratsMartins Ekor, Odusoga Adewale Osonuga, Adesina Olalekan Odewabi et al.Problem statement: Owing to numerous adverse effects of most orthodox pharmaceuticals, the use of herbal remedies in treatment and prevention of diseases is gaining much attention, especially in developing countries. The increase patronage of these remedies is often predicated on the assumption that they are harmless since they are prepared from natural sources. However, toxicity related to herbal medicines is … …American Journal of Pharmacology and Toxicology, Vol. 5, Issue 4 · 13 Jun 2011 · 10,198 accessesView PDF Cite

Research ArticleOpen accessIn the abstractA Technique for Quality Evaluation of E-Learning from Developers PerspectiveMajdi Abdellatief, Abu Bakar Md Sultan, Marzanah A. Jabar, Rusli AbdullahProblem statement: E-learning is gaining more acceptance as days pass because it provides learning opportunity any time and in any place. Different people have different preferences in terms of learning style such as reading text, listing audio or video, speaking and communication. To support these different learning preferences, there is need for multiple e-learning delivery methods and teaching techniques. Furthermore, … …American Journal of Economics and Business Administration, Vol. 3, Issue 1 · 31 Jan 2011 · 9,481 accessesView PDF Cite

Research ArticleOpen accessIn the abstractLocally-Chosen versus State-Mandated Success Criteria: A Retrospective Evaluation of the Effectiveness of the Success-For-All Program with Fourth and Seventh Grade Hispanic StudentsJames Carifio, Dalis DominguezProblem statement: This study compared the growth in reading competencies of Hispanic female and male students in the SFA program as measured by the Massachusetts Comprehensive Assessment System (MCAS) and the Scholastic Reading Inventory (SRI). Approach: The study was a retrospective study with several a priori hypotheses and examined logical comparison groups of 4th and 7th graders, who received 1 … …Current Research in Psychology, Vol. 1, Issue 2 · 31 Dec 2010 · 7,983 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAcceptance and Sustainability of Contract Farming Among Youth in MalaysiaJeffrey Lawrence D'Silva, Hayrol Azril Mohamed Shaffril, Jegak Uli, Bahaman Abu SamahProblem statement: Contract farming is one of the agriculture branches that is ready to be discovered for its huge potential and it is perceived as a new dimension which offers agricultural sustainability. But do the youth as the pillar of this sector do accept agriculture? Thus, this study would like to discover factors that affect acceptance of youth towards contract … …American Journal of Agricultural and Biological Sciences, Vol. 5, Issue 3 · 30 Sep 2010 · 8,684 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDevelopment of Socioscientific Issues-Based Teaching for Preservice Science TeachersPrasart NuangchalermProblem statement: In the context of science education reform in Thailand, we need to prepare science teachers who can face science and social issues controversial; teachers can response the question socioscientific issues and let their students to meet the goal of science education. This study investigated the conception leading preservice science teachers approaching socioscientific issues-based teaching. The activities in classroom … …Journal of Social Sciences, Vol. 5, Issue 3 · 30 Sep 2009 · 8,037 accessesView PDF Cite

Research ArticleOpen accessIn the abstractAn assessment of Urban Quality of Life by Using Analytic Hierarchy Process Approach (Case study: Comparative Study of Quality of Life in the North of Iran)Sedigheh Lotfi, Karim SolaimaniProblem Statement: Researches of quality of life are concentrated mainly on the urban nature in the recent years and the urban quality of life gained many attentions in empirical studies. The concept of urban quality of life is a multi-dimensional and complex issue. So, needless to say that this concept can be used in planning when there is an appropriate … …Journal of Social Sciences, Vol. 5, Issue 2 · 30 Jun 2009 · 8,637 accessesView PDF Cite

Research ArticleOpen accessIn the abstractDevelopment of Criteria for Slab Compaction of Laboratory Roller Compactor (Turamesin)R. Muniandy, F.M. Jakarni, S. Hassim, A.R. MahmudLaboratory experiments should simulate to a high degree the conditions in the field, especially in term of compaction procedures. Presently available laboratory compaction methods do not seem to be able to produce specimens that can truly represent the mixtures as it exists in the field, especially for Stone Mastic Asphalt (SMA) mixtures. SMA is highly dependent on the method of … …American Journal of Applied Sciences, Vol. 4, Issue 11 · 30 Nov 2007 · 7,118 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEvaluating the Effect of Inheritance on the Characteristics of Object Oriented ProgramsThabit S. Mohammed, Hayam K. MustafaThis paper considers a fact that software measures, which many of them were defined many years ago, are still not widely used in software industry, and therefore some additional insights will be gained by investigating Halstead's metrics and use them to propose more software metrics. Since the object oriented approach was considered an active technology for achieving high quality software, … …Journal of Computer Science, Vol. 2, Issue 12 · 31 Dec 2006 · 6,784 accessesView PDF Cite