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Thursday, 30 January 2014
ISSN : 2231-1963
Impact Factor (2012): 1.07
Call for Papers
Submission Deadline: January 31, 2014
IJAET is a scholarly, online international journal that publishes original research papers in the fields of Engineering & Technology. The aim of the IJAET is to publish peer reviewed research and review articles. The Journal welcomes the submission of manuscripts that meet the criteria of significance and scientific excellence. The Journal covers all essential branches of Engineering & Technology.
HIGH QUALITY PAPERS FOR IJAET ARE INVITED FOR SUBMISSION.
Objectives of IJAET
We have a high standard of peer review. A strong Editorial Board helps us with policy and decision-making, and in some cases help with choosing referees and reviewing manuscripts.
E-mail for Manuscript Submission:
Wednesday, 8 January 2014
MODELLING AND CONTROL OF STANDALONE WIND ENERGY CONVERSION SYSTEM Published in IJAET Volume 6 Issue 6
BOUZID Mohamed Amine1, MASSOUM Ahmed1,
ALLAOUI Tayeb2, ZINE SOUHILA3
2Department of Electrical Engineering, IBN Khaldoun University, Tiaret-Algeria
3Department of Electrical Engineering, University of Sciences and Technology, Oran-Algeria
In this paper, a Wind Energy Conversion System (WECS) is discussed. The power conversion system consists of a Permanent Magnet Synchronous Generator (PMSG), a rectifier and an inverter connected to the grid. An intermediate DC bus exists between the rectifier and inverter. This conversion system use the PMSG because of its high performances, small size and its low weight compared to induction generators. The generator torque is controlled according to the generator speed and thus the power from a wind turbine settles down on the maximum power point by the MPPT control method. Modeling and Simulation of all the components has been done in MATLAB/Simulink.
A Simulation Model for Stage –IV Koyna Hydropower Plant
Mohd. Imran Ahmed, Siraj Y. Abed
Department of Industrial Engineering, King Abdulaziz University,
Hydroelectric power contributes around 12.45 percent of the electricity supply in India. It is considered to be the most vital, unpolluted, emission-free and an inexpensive renewable source of energy. Hydroelectric power-plants operating all over the world aims to have high electric output with minimum maintenance cost. It’s very different with Koyna Hydropower Plant (KHPP) stage IV which generates lower electric output than the installed capacity with higher maintenance. This project aims to build a simulation model which can simulate the regular operation of Koyna Hydropower Plant with Arena®. The study involves to evaluate dynamic response of the system and plant performance under various operating conditions such as head height, quantity of water flow penstock and operating gates. Also to determine and identify the optimum parameters required for maximum power generation. The outcomes of the model helped to analyse the power generation capacity against the required quantity of water flow and head height. The developed simulation model was validated and used as an apparatus to determine the optimal operating parameters that maximise power generation of stage –IV at Koyna Hydropower plant.
Keywords: Hydropower Plant, turbine, Penstock, Head, Flow rate, simulation modelling.
Compressive Sensing Radar Signal Processing
Khaled Hussein1 and F. Abd-Alkader2
1DSP Division, Military Technical College, Egypt
2Radar Division, Military Technical College, Egypt
This paper presents the application of Compressive Sensing (CS) theory in radar signal processing. CS uses the sparsity property to reduce the number of measurements needed for digital acquisition, which causes reduction in the size, weight, power consumption, and the cost of the CS radar receiver. Complex Approximate Message Passing (CAMP) algorithm is a fast iterative thresholding algorithm which is used to reconstruct the undersampled sparse radar signal, and to improve the Signal-to-Noise Ratio (SNR) of the radar signal [12- 16]. The superiority of applying the CAMP algorithm in radar signal processing compared to the Digital Matched Filter (DMF), and the simple envelope detector is proved through the Receiver Operating characteristic (ROC) curves. On the other hands, complexity and time of calculation are critical issues which must be considered.Keywords: Compressive Sensing, CAMP algorithm, Radar.
ESTIMATION OF STRESS-STRENGTH MODEL FOR GENERALIZED INVERTED EXPONENTIAL DISTRIBUTION USING RANKED SET SAMPLING PUBLISHED on IJAET Volume 6 Issue 6
Estimation of Stress-Strength Model for Generalized Inverted Exponential Distribution using Ranked Set Sampling
M. A. Hussian
Department of Mathematical Statistics
Institute of Statistical Studies and Research (ISSR), Cairo University, Cairo, Egypt
In this paper, the estimation of R=P(Y < X), when X and Y are two generalized inverted exponential random variables with different parameters is considered. This problem arises naturally in the area of reliability for a system with strength X and stress Y. The estimation is made using simple random sampling (SRS) and ranked set sampling (RSS) approaches. The maximum likelihood estimator (MLE) of R is derived using both approaches. Assuming that the common scale parameter is known, MLEs of R are obtained. Monte Carlo simulations are performed to compare the estimators obtained using both approaches. . The properties of these estimators are investigated and compared with known estimators based on simple random sample (SRS) data. The comparison is based on biases, mean squared errors (MSEs) and the efficiency of the estimators of R based on RSS with respect to those based on SRS. The estimators based on RSS is found to dominate those based on SRS.
Keywords: generalized exponential distribution; reliability; stress-strength; ranked set sampling, simple random sampling; maximum likelihood estimators.
The estimation of reliability is a very common problem in statistical literature. The most widely approach applied for reliability estimation is the well-known stress-strength model. This model is used in many applications of physics and engineering such as strength failure and the system collapse. In the stress-strength modeling, R=P(Y < X) is a measure of component reliability when it is subjected to random stress Y and has strength X. In this context, R can be considered as a measure of system performance and it is naturally arise in electrical and electronic systems. Another interpretation can be that, the reliability of the system is the probability that the system is strong enough to overcome the stress imposed on it. It may be mentioned that R is of greater interest than just reliability since it provides a general measure of the difference between two populations and has applications in many areas. For example, if X is the response for a control group, and Y refers to a treatment group, R is a measure of the effect of the treatment. In addition, it may be mentioned that R equals the area under the receiver operating characteristic (ROC) curve for diagnostic test or biomarkers with continuous outcome, see; Bamber, . The ROC curve is widely used, in biological, medical and health service research, to evaluate the ability of diagnostic tests or biomarkers and to distinguish between two groups of subjects, usually non-diseased and diseased subjects. For complete review and more applications of R; see [2-14].
Ranked set sampling (RSS) is a sampling protocol that can often be used to improve the cost and efficiency for experiments . It is often used when a ranking of the sampling units can be obtained cheaply without having to actually measure the characteristics of interest, which may be time consuming or costly [16,17]. Such a technique is well received and widely applicable in environmental applications, reliability and quality control experiments [18-20]. A modification of ranked set sampling (RSS) called moving extremes ranked set sampling (MERSS) was considered for the estimation of the scale parameter of scale distributions  and an improved RSS estimator for the population mean was obtained . On the other hand, Ozturk has developed two sampling designs to create artificially stratified samples using RSS 
Recently, many authors have been interested in estimating R using RSS. For example, Sengupta and Mukhuti , considered an unbiased estimation of R using RSS for exponential populations. Muttlak and co-authors , proposed three estimators of R using RSS when X and Y independent one-parameter exponential populations. In a RSS procedure, m independent sets of SRS each of size m are drawn from the distribution under consideration. these samples are ranked by some auxiliary criterion that does not require actual measurements and only the ith smallest observation is quantified from the ith set, i = 1,2,…,m. This completes a cycle of the sampling. Then, the cycle is repeated k times to obtain a ranked set sample of size n = m k .
A SURVEY OF 3G TECHNOLOGIES; VITAL TOOL IN NATIONAL MOBILE TELECOMMUNICATION (NMT) DEVELOPMENT Published on IJAET Volume 6 Issue 6
A Survey of 3G Technologies; Vital Tool in National Mobile Telecommunication (NMT) Development
Agbaraji C. Emmanuel and Aririguzo I. Marvis
Department of Electronic and Computer Engineering,
Nnamdi Azikiwe University Awka, Nigeria
Today, almost all fields of human activities rely on the high-speed broadband technologies for their day-to-day activities. The banks for example, are making plans to implement better and more sophisticated services such as cashless banking and other e-transactions as part of the NMT development goals. The 3G network coverage has become a problem in most rural and parts of the urban cities in Nigeria. However, the national mobile telecommunication development goals cannot be achieved without addressing the issue of 3G coverage in the country. The objective of this paper is to investigate the 3G technologies, their applications and the situation in developing nations especially Nigeria. The NMT development was reported to lag behind in the global telecommunication development and 2G networks are still more prevalent in most areas than 3G networks. It was concluded that the full deployment and coverage of 3G network will enhance the success of the NMT goals.
KEYWORDS: 3G, Broadband, CDMA, EDGE, GSM, HSPA, ICT, LTE, Mobile Telecommunication, UMTS.
Information and Communication Technology uptake has continued to grow worldwide , with 3G technology  as the key or the major driving force towards this achievement and growth. Mobile Broadband is an exciting new technology that allows connection to the Internet without the usual ADSL router and telephone line setup. Using the connection is not limited in the house - as the name suggests it allows connection while mobile as it uses wireless technology, so that the Internet and e-mail can be accessed anywhere (as long as the 3G signal is available). Therefore the usage of the 3G service depends on the availability of the 3G signal in an area.
3G is a term used to represent the third generation of mobile telecommunications technology [2; 3]. This is a set of standards used for mobile devices and mobile telecommunication services and networks that comply with the International Mobile Telecommunications-2000 (IMT-2000) specifications by the International Telecommunication Union . 3G finds application in wireless voice telephony, mobile Internet access, fixed wireless Internet access, video calls and mobile TV . Several telecommunication companies market wireless mobile Internet services as 3G, indicating that the advertised service is provided over a 3G wireless network. Services advertised as 3G are required to meet IMT-2000 technical standards, including standards for reliability and speed (data transfer rates). To meet the IMT-2000 standards, a system is required to provide peak data rates of at least 200 kbit/s (about 0.2 Mbit/s) . Recent 3G releases often denoted 3.5G and 3.75G, also provide mobile broadband access of several Mbit/s to smartphones and mobile modems in laptop computers. There are standards that are typically branded 3G which will be extensively used in this work which include UMTS (Universal Mobile Telecommunication System) and CDMA2000 (Code Division Multiple Access-2000).
A SURVEY OF 3G TECHNOLOGIES; VITAL TOOL IN NATIONAL MOBILE TELECOMMUNICATION (NMT) DEVELOPMENT from P Singh Ijaet
Monday, 6 January 2014
International Journal of Advances in Engineering & Technology (IJAET)
Impact Factor (2012): 1.07
**** Smooth, simple and timely publishing of review and research articles! ****
Call for Papers: IJAET, Volume 7 – Issue 1
Deadline : 31th Jan. 2014
Notification : 15th Feb. 2014
IJAET welcomes research articles from scientists, Engineers and Research Scholars involved in all areas of engineering and technology from all over the world to publish high quality research papers. Papers for publication in the IJAET are selected through rigorous peer review to ensure originality, timeliness, relevance, and readability.
IJAET is inviting fresh submissions for its forthcoming issue, Volume 7, Issue 1. Authors are encouraged to contribute their original research to the journal by submitting their research papers that comes under any of following category: research findings, projects, literature surveys, review works, case studies, short communications of high quality, theoretical or empirical research articles, book reviews, proposals, analysis, tutorials, editorials as well as pedagogical and curricular issues that describe significant advances in field of Engineering and Technology.
For list of IJAET topics visit, aim and scope (http://www.ijaet.org/aim-scope-of-ijaet/index.html)
All submitted papers would be evaluated through a peer-review process conducted by the editorial board of IJAET. For editorial workflow for the peer review process of IJAET visit (http://www.ijaet.org/peer-review-of-ijaet/index.html)
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