Volume 1, Issue 1, June 2015

 

 

 

Review Study of safety Techniques and Challenges in Wireless Sensor Networks

Pages: 1-10 (10) | [Full Text] PDF (623 KB)
M Iqbal
Department of Electrical Engineering, Sarhad University of Science & IT, Peshawar, 25000, Pakistan

Abstract -
Owing to the significant advances in micro-electro-mechanical systems (MEMS) technology, wireless communica-tions and digital electronics have enabled the development of low-cost, low-power, multifunctional sensor nodes whi-ch are small in size and communicate in short distances. These small sensor nodes, which consist of data proce-ssing, sensing and communicating compone-nts, influence the idea of sensor networks based on collabo-rative effort of a large number of nodes. Sensor networks represent a large progress over traditional sensors. A sensor network is fabricated of large number of sensor nodes which is densely deploy-ed either near the phenomena or inside the phenomena. The place of sensor node need not to be predestined or engineered rather it is self-adjusting. WSNs have got many applications in different fields like military, ecological, and health-related areas. WSNs suffer from many constraints, including low computation capability, small memory, limited energy resources, susceptibility to physical capture, and the use of insecure wireless communication channels. These constraints make security in WSNs a challenge.
 
Index Terms - WSN, Sensor Node, Symmetric Key, Asymmetric Key

Citation - M Iqbal. "Review Study of safety Techniques and Challenges in Wireless Sensor Networks." International Journal of Computer Engineering and Information Technology 1, no. 1 (2015): 1-10.

 

Design of a Non Fragile Optimal Control Based Realization in Comparison between LQR and Observer Based Controller for Magnetic Levitation System

Pages: 11-14 (4) | [Full Text] PDF (398 KB)
HA Khan, AU Rehman, SK Marwat, SU Rehman
Sarhad University of Science & Information Technology, Peshawar, Pakistan
Cecos University of Information Technology and Emerging Sciences, Peshawar, Pakistan

Abstract -
This paper explains Magnetic Levitation system of a train which comprises of guidance track made with magnets. The main objective is to compare the output response of the Linear Quadratic Regulators (LQR) and Observer based controller and to observe that which controller can perfectly suspend and propelled the train on a guidance track made with magnets. To perform the desired task state space model of Magnetic Levitation system is derived. The response of the system is simulated in MATLAB/SIMULINK. The open loop response showed that the derived model is unstable. The output response of Linear Quadratic Regulator (LQR) and Observer based Controller are used to analyze the system in closed loop. Both the controllers showed improved performance for different magnetic tracks. It is observed and shown that observer based controller has better response than Linear Quadratic Regulator (LQR) controller. Simulink models for Linear Quadratic Regulator (LQR) and observer based controller are designed. Besides, different types of realization techniques (minimal realization, balanced realization, modal realization, observer canonical realization) are compared for minimum fragility in controller implementation. The difference among the different realization controllers has been analyzed in detail for rounding off error or truncation error and an optimal non fragile controller design has been presented. Different disturbances were imposed upon the simulated model. All the results are analyzed in open and closed loops. The closed loop response showed that the train is suspend and propelled on the track and the desire results were achieved successfully.
 
Index Terms - Optimal Control, Realization, Non-fragile, LQR, Observer Based

Citation - HA Khan, AU Rehman, SK Marwat, SU Rehman. "Design of a Non Fragile Optimal Control Based Realization in Comparison between LQR and Observer Based Controller for Magnetic Levitation System." International Journal of Computer Engineering and Information Technology 1, no. 1 (2015): 11-14.

 

Performance Evaluation of LEACH and Its Variants

Pages: 15-20 (6) | [Full Text] PDF (563 KB)
PAVAN R, V PAI and P V. KALLAPUR
M-Tech, Computer Network Enginnering, NMAMIT, Nitte
Assistant Professor, Department of ISE, NMAMIT, Nitte

Abstract -
Sensor node has a limited amount of battery in sensor network. So, it is very important to have the maximum lifetime of network through energy effective routing. To attain maximum lifetime for sensor nodes, it is necessary to design and utilize an efficient clustering algorithm. LEACH is a well known routing protocol based on clustering, but it has several problems like short network lifetime etc., because of the inefficient energy consumption. Several variants have been proposed to overcome these problems in LEACH. This paper presents the simulation and analysis of chosen variants of LEACH namely LEACH-C, Multi-hop LEACH, Energy-LEACH using MATLAB.
 
Index Terms - Wireless Sensor Network; Routing, Clustering, LEACH, LEACH-C, Multi-hop LEACH, Energy-LEACH

Citation - PAVAN R, V PAI and P V. KALLAPUR. "Performance Evaluation of LEACH and Its Variants." International Journal of Computer Engineering and Information Technology 1, no. 1 (2015): 15-20.

 

A Review on Personalized Mobile Web Search

Pages: 21-24 (4) | [Full Text] PDF (254 KB)
L Jadhav, G Sonawane, S Pawar
Computer Engineering, Savitribai Phule Pune University, Nashik, Maharashtra, India

Abstract -
We design a personalized mobile web search (PMWS) that captures the users preferences in the form of concepts by Mining by their click through data. Due to the consequence of location information in mobile search, PMWS classifies these parameters into content concepts and location concepts. In addition, users locations (positioned by GPS) are used to complement the location concepts in PMWS. The user preferences are ordered in ontology-based, multifacet users profile, which are used to acclimatize a personalized ranking function for rank adaptation of future search results. To characterize the multiplicity of the concepts associated with a query and their relevance to the users need, four techniques are introduced to balance the weights between the content and location facets. Based on the client-server module, we also present a exhaustive architecture and design for execution of PMWS. In our design, the client will collects and stores locally the click through data to protect the privacy, whereas heavy jobs such as the concept mining, training and reranking are performed at the PMWS server. Furthermore, we address the privacy issue by restricting the information in the user profile showing to the PMWS server with the two privacy parameters.
 
Index Terms - Data Mining, Mobile Web, Click through, Web Search, Reranking

Citation - L Jadhav, G Sonawane, S Pawar. "A Review on Personalized Mobile Web Search." International Journal of Computer Engineering and Information Technology 1, no. 1 (2015): 21-24.