Volume 3, Issue 3, March 2012

Experimental Study of Dust Effect in Mult-Crystal PV Solar Module

A. Benatiallah, A. Mouly Ali, F. Abidi, D. Benatiallah, A. Harrouz and I. Mansouri

Labo EESI, Faculté des sciences et science de l’ingénieur, University of Adrar Street, Adrar, Algeria

Abstract– Photovoltaic system is established as a reliable and economical source of electricity in rural and Sahara areas, especially in developing countries where the population is dispersed, has low consumption of energy and the grid power is not extended to these areas due to viability and financial problems. The production of energy by the photovoltaic system is very fluctuates and depend of meteorological conditions. Wind is a very important and often neglected parameter in the behavior of the solar module. The electric performances of a solar module to the silicon are very appreciable to the blows; in the present work we have studies the behavior of multi-crystal solar module according to the density of dust, and the principal’s electric feature of the solar module. An evaluation permits to affirm that a solar module under the effect of sand will collect a lower flux to the normal conditions.

Keywords—Photovoltaic, Multi-Crystal Module, Experimental, Effect of Dust and Performance

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A Survey on Architecture, Protocols, Challenges and Solutions on Vehicular Networking

Muhammad Asif khan, Aytizaz Ahmed, Mujahid Shah, Muhammad Shahab khan, Noor Gul, Nauman Qamar and Amir Shahzad

Gandhara University of Sciences, Peshawar, Pakistan

Abstract– Vehicular networking has various prospects and opportunity to facilitate various functions connected with traffic safety, traffic Effectiveness system infotainment and on their improvement. In this paper we set up the essential overview, its application and related requirements, its architecture, protocol its challenges and its solutions.

Keywords—Protocols, Networking, Vehicular, Challenges and Solution

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Application of GIS in Gezira Scheme and Managil Extension in Sudan

Dr. Nagi Zomrawi Mohammed Yousif and Fatah Elrhman Rizigalla Mohammed

Sudan University of Science and Technology, Sudan

Abstract– The utilization of Geographical Information System (GIS) in agricultural projects can assist in decision making, planning and development. In this study GIS has been applied in Gezira scheme and Managil extension project for the first time in Sudan. Soil, information was collected to be used for determination of suitable areas for growing suitable crops. Thematic maps of scale 1:2,000,000 was produced showing soil type, soil property, cultivated crops, farms, canalization system, roads, towns, blocks, and the groups of the scheme. Database and attribute tables was developed. Some relationships between land suitability in salinity and sodicity with crop requirements was created. Analysis and results showed that some new crops can be cultivated in the scheme such as sugar cane, barley, acacia, maize and fruits. Moreover, some extracted information could assist in understanding human behavior so that it could be modified and improved to reduce the effort of production of people and government towards improving human health and to make mere sustainable development.

Keywords—GIS, Gezera Scheme and Managil Extension, Salinity and Sodicity Factors

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A Frame Work on Nutshell using Unsupervised Concise Range Queries

B. Sunil Kumar, B. Rajasekhar and S. Chandana

Department of Master of Computer Applications in Jawaharlal Nehru Institute of Technology, Hyderabad, India

Abstract– Wireless communication technology is more advance in common for people to view maps or get related services from the handheld devices, such as mobile phones and PDAs. Range queries, as one of the most commonly used tools, are often posed by the users to retrieve needful information from a spatial database. A novel idea that a concise representation of a specified size for the range query results, while incurring minimal information loss, shall be computed and returned to the user. Such a concise range query not only reduces communication costs, but also offers better usability to the users, providing an opportunity for interactive exploration and concise range queries is confirmed by comparing it with other possible alternatives, such as sampling and clustering. Unfortunately, we prove that finding the optimal representation with minimum information loss is an NP-hard problem. Therefore, we propose several effective and nontrivial algorithms to find a good approximate result......

Keywords—Unsupervised Learning, Histogram, Spatial Databases and Wireless Sensor Networks

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An Overview of Security of Wireless Networks

Qazi Ahmad Faraz, Zeeshan Hayat, Waqas Ahmad, Amir Shehzad, Farid ud Din, Iqtidar Shah, Fahad Masood, Muhammad Sohaib and Fayyaz Gul

Gandhara University of Sciences, Peshawar, Pakistan

Abstract– A lot of Organizations are adopting wireless technologies at a hasty rate. Utilization of wireless applications vary from extending large commercial services, schools and employees using hand-held devices to organizations rethinking their exploitation strategies for using or extending hard-wired networks. Unfortunately, the leading parts of today’s deployments are not sufficiently secured and expose organizations to unnecessary and unexpected menaces that could pilot to a major security failure. In this paper we outlined the basics of a wireless networks, from the beginning to new technologies available for secured wireless networks.

Keywords— WSN, Technology, Security and Solution

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An Application of Statistical Thermodynamics to an Open Flow System

Achebe, C.H., Chwukwuneke, J.L., Ajike, C.O.A., and Okolie, P.C.O.

Department of Mechanical Engineering, Nnamdi Azikiwe University, PMB-5025, Awka, Nigeria

Abstract– This research work, an application of statistical (analytical) thermodynamics to an open flow system used the grand canonical ensemble to deal with the study of a liquid flow system. The essence was to understand and to interpret measurable macroscopic properties of materials and thus establish valid relationships among measureable variables in a statistical manner over time. A valid relationship with constant, ke between the energy (E) supplied to 2hp pump and the expected discharge (Q) at a 50mm riser was established. This thus reiterates the relationship among important variables for optimal outputs and longevity of the system. Absolute values of energy and the discharge quantities were obtained as Eabs = 1305.512 218 Joules and Qabs = 0.009 532 011m3/s respectively.

Keywords—Ensemble, Grand Canonical, Statistical and Thermodynamics

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Orthogonal Frequency Division Multiplexing for Mobile Communication: An Overview

Amin ul Haq, Prof. Adeel, Noor Khan, Amir Shehzad, Ihsan Ilahi Jan, Waseem Khan, Junaid Khan, Muhammad Ishfaq Ahmad Khan, Abdul.Sattar and Usman

Gandhara University of Sciences, Peshawar, Pakistan

Abstract– This paper investigates the effectiveness of Orthogonal Frequency Division Multiplexing (OFDM) as a modulation technique for wireless radio application. Orthogonal frequency division multiplexing has numerous exclusive properties which erects it particularly well suited to grip the challenging ecological/environmental circumstances experienced by mobile wireless data application. It was originated that OFDM performs extremely well compared with CDMA providing a very high forbearance to multipath delay spread, peak power clipping and channel noise. Also it endows with a high spectral efficiency.

Keywords—Investigation, Efficency, CDMA, Technique and Modulation

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Automated Technique for Medical Images Using Neural Network

Afshin Shaabany and Fatemeh Jamshidi

Science and Research Branch, Islamic Azad University, Fars, Iran

Abstract– This article raises a new automated technique for medical images. It has been implemented using a neural network. Automated technique is an important process that helps in identifying objects of the image. Existing automated technique methods are not able to exactly segment the complex profile of the medical images accurately. Automated technique of every pixel in the medical images correctly helps in proper location of tumor. The presence of noise and object raises a stimulating problem in proper automated technique. The proposed model is an assessment method with energy minimization. The assessment property helps in better automated technique of the complex profile of the medical images. The performance of the new automated technique method is found to be better with higher peak signal to noise ratio of 61 when compared to the existing automated technique method.

Keywords—Neural Network, Intelligent Automated Technique, Medical Images, Feature Extraction and Signal-to-Noise-Ratio

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