Based on wavelet decomposition theory, an image source can be decomposed into different weight levels. Then, the bit streams with different weight are modulated by FH-OFDM system, which can give low frequency bits more protection with the help of hop frequency graphics design in FH-OFDM. A joint system combined with source coding and adaptive modulation method is studied to give the image bit streams with different subcarriers, which eliminates ISI in low frequency streams more effectively. Therefore, a better reconstruction image can be obtained at receiver. Simulation results indicate that the scheme with joint source coding and adaptive modulation method can outperform the system without adaptive modulation in image quality.
A greenhouse has one purpose, to provide and maintain the environment that will result in optimum crop production for maximum profit. In this paper, control of green house is carried out using Fuzzy Logic as design tool. The Model Reference Adaptive control approach in used to design fuzzy controller. The idea is to have a control system that will be able to achieve improvement in the level of conversion and to be able to track set point change and reject load disturbance. We use conventional control scheme as benchmark to study the performance of the controller.
Deepika D. Huddar, Bhavna D. Ambudkar, A. P. Dhande
Wireless data applications play a critical role in making the vision of mobile computing a reality &One motivation of mobile Next Generation Networks (NGN) is the ubiquitous computing abilities, which provide automatic handovers for any moving computing devices in a globally networked environment. People have even more flexibility when true wireless Internet and real-time multimedia are provided seamlessly over heterogeneous wireless networks. The vertical handover is defined as the process of changing from one technology to another. For example, the data services are switched to Wireless Local Area Networks (WLAN) from the previously attached Worldwide Interoperability for Microwave Access (WiMAX) networks. This paper reports on the design and implementation of vertical handoff decision algorithms in a heterogeneous wireless local area network (WLAN), UMTS and a WiMAX network environment. This will allow a user to use one device across many types of networks. This requires the integration and interoperation of heterogeneous networks, and the provision of seamless vertical handoff. We use a fuzzy logic inference system and Analytic Hierarchy Process to process a multi-criteria vertical handoff decision metrics.
This research aims to experimentally explore the thermal histories and temperature distributions in a workpiece during a friction stir welding (FSW) process involving the butt joining of aluminium AA 8011. K- Type thermocouples are used to measure the temperature histories during FSW at different locations on the workpiece in the welding direction. Successful welding processes are achieved by appropriately controlling the maximum temperatures during the welding process. Regression analyses by the least squares method are used to predict the temperatures at the joint line. A second-order polynomial curve is found to best fit the experimental temperature values in the width direction of the workpiece.A three-dimensional thermal model for Friction Stir Welding (FSW) is presented. The simulation model is tested with existing experimental results of aluminium alloys 8011.The results of the simulation are in good agreement with that of experimental results.
This document describes architecture of “Search Engines” for semantic web, the upcoming tool for finding information on the web. It describes the semantic web i.e. more flexible, integrated, and automatic and self-adapting Web and need for search engines for the same. Basic components of Semantic Search Engine are discussed. Working is also described in comparison with traditional architecture Parsing and indexing.The main focus of this Paper is discussing different techniques that can be used to optimize the search for semantic web documents. The techniques involved are Clustering, Association, classification etc. Finally, the limitations, benefits are discussed with a conclusion.
The development of durable and cost effective high performance construction materials and systems is important for the economic well being of a country mainly because the cost of civil infrastructure constitutes a major portion of the national wealth. To address the problems of deteriorating civil infrastructure, research is very essential on smart materials. This paper highlights the use of smart materials for the optimal performance and safe design of buildings and other infrastructures particularly those under the threat of earthquake and other natural hazards. The peculiar properties of the shape memory alloys for smart structures render a promising area of research in this field.
Mr. Asif G. Momin, Mr. FayazMaredia, Prof.Subim Khan
This paper deals with the challenging task of computing accurate geometrical parameters of hip joint from Computed Tomography (CT) and Magnetic Resonance Imaging (MRI) scans. A computer-aided automatic measurement method is developed for determination of geometric parameters of hip joint from living body CT images. A reverse engineering approach is used to construct a 3D model of hip joint from CT images. The image processing algorithms developed till date are used for displaying the CT images on the screen. These images are used for medical diagnosis. Commercial software like Mimics uses this approach. But the method used in this paper is an attempt to generate an accurate 3D model of the bone. This model then can be used for manufacturing customized implants. This is the first attempt to integrate bone image processing with product design and manufacturing. Standard phantom CT images are used to assess the accuracy of the measurements.
Sushant S. Raut, Pratik Pawar,Mayur M. Sakhare,SudarshanG.Phule,
Nilkanth G. Jagtap
Advertising on mobile devices is one of the new needs and has demonstrated to have a large potential due to the very personal and intimate nature of the devices and the possibility of reaching a broad range of targets. In this paper we present Blue-Mall, a context-aware pervasive system for advertising in large commercial areas. Blue-Mall uses Java and Bluetooth wireless technology making it a very portable system. We describe the overall architecture and discuss the implementation steps taken to build our application. To evaluate the performance behaviour of our system in relation to the environment, we run some experiments in our test-lab. Experimental results show that the system provides a viable solution for permission-based mobile advertising.
Engine is one of the most important components of a road vehicle such as car. High performance sports car has their engine supported by bracket. It plays an important role in improving the comfort & work environment of a car. The improvement of engine bracket system has been the subject of intense interest for many years. It is necessary to design proper engine bracket for a car. As such, engine bracket has been designed as a framework to support engine. Fatigue of engine bracket has been continuously a concern which may lead to structural failure if the resulting stresses are severe and excessive. Prolonged exposure to whole-body stresses in the working environment may lead to fatigue and in some cases it damages the car. Optimizing the mounts system in early stages of power train design is possible by computer-aided engineering tools. CAE results can be analyzed without any costly prototypes. The results can be used to define strategy for the vehicle mount system and optimize the locations and the rates of mounts.