In considering the techniques that may be used for digital circuit testing, two distinct philosophies may be found, First is Functional Testing, which undertake a series of functional tests and check for the correct (fault free) 0 or 1 output response. It does not consider how the circuit is designed, but only that it gives the correct output during test and second one is Fault Modelling in whichto consider the possible Faults that may occur within the circuit, and then to apply a series of tests which are specifically formulated to check whether each of these faults is present or not.The faults which are likely to occur on the wafer during the manufacture of the ICs, and compute the result on the circuit output(s) with or without each fault present. Each of the final series of tests is then designed to show that a particular fault is present or not.

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Efficiency in a Wireless Sensor Network can only be obtained with effective routing mechanisms. This paper uses Particle Swarm Optimization (PSO, a metaheuristic algorithm to perform the process of routing. Since PSO does not have a defined fitness function, it is flexible to incorporate user defined QoS parameters to define the fitness function.

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This paper proposes an efficient and low cost solution to monitor, control and track rented vehicles. This paper aims to avoid the problems due to traffic congestion, environmental pollution and global warming effect due to the vast number of vehicles through the concept of vehicle sharing. In vehicle sharing, vehicles can be booked in advance and charges levied on the basis of time and distance. The paper focuses on finding solutions for providing a sustainable model of mobility, by integrating various features like user authentication, theft detection, collision detection, distance travel per day analysis and functions control. The idea was experimentally implemented and the desired result was obtained successfully.

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As the demand is going to increase the generations have to be increased. So as the time is going to pass the conventional energy sources are going to be decreased and it might happen that after some years these sources are going to be exhausted. The best alternative of conventional energy sources are the non-conventional energy sources, which are never going to become exhausted because they are the natural sources and they are permanently available for use. The challenges required for the conventional energy for increasing population demand with the use of renewable energy the future of India get good opportunities to full fill it. Among the various non-conventional energy sources such as solar energy, wind energy, Hydro energy, tidal energy, wave energy, Ocean Thermal energy, geothermal energy, Biomass energy, fuel cell energy, Hydrogen etc. are never going to become exhausted because they are natural sources and they are permanently available for use. The sharp increase in energy consumption particularly in the past several decades has raised fears of exhausting the globe's reserves of fossil fuels in the near future. Approximately, 90% of our energy consumption comes from fossil fuels. Energy and development are inter-related. Energy sector is the backbone of any country's growth and economy. India is one of the largest growing economies in the world and today not just India, but the whole world is looking for alternate sources of energy like wind, solar, hydro, biomass, biofuel etc. known as renewable energy sources for Sustainable energy development.

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The discovery through computational modeling and simulation has become the third pillar of science, alongside theory and experimentation. As computational power increases, simulation has gained in importance and has become a major research area, where highly parallel computation is utilized. In this dissertation, we have performed the simulation by selecting a single machine which is involved in manufacturing the highest number of products. Data are collected for all the processes involved in the manufacturing processes and an input modelling analysis is been done for the data collected. After the analysis is completed, a simulation model is constructed using ARENA which involved all the manufacturing process using the simulation tools. With the help of the simulation tools we will be able to identify activities causing the bottlenecks and delays in the entire manufacturing processes. Similarly, this simulation can be carried out for each and every machine of the company so that we can identify the bottlenecks and delays. As a result, the bottlenecks and delays can be reduced and the entire supply chain can be improved. This paper aims at combining supply chain management and simulation - to give an overview of both areas and shows how supply chain management can profit from simulation and also to identify the delays and bottlenecks in the overall manufacturing process. Lastly, a sample of how a supply chain can be optimized, in the simulation development suite ARENA.

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The life of the Taper Roller Bearing is most important factor with the optimum dimension, life and the geometry both of these are important to stay in the market. These parameters are determined the cost and quality of the bearing. To increase the life of bearings, the dimension of the bearing should be optimum to get the reliability and function of the bearing. In this project the geometry of the bearing component is trying to optimize with the desired life. By optimize the dimension of the Pocket corner radious of bearing component, the total mass of the bearing component. By reducing the weight of the bearing component ultimately total efficiency as well as total cost of the bearing is also reduced. The mass of bearing is reduced by changing the geometry of the dimension of the bearing component. The optimization has been carried out by keeping the results of the existing bearing constant.

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Wireless mesh networks (WMNs) are attractive as a new communication paradigm. Ad hoc routing protocols for WMNs are classified into: (1) proactive, (2) reactive, and (3) hybrid approaches. In general, proactive routing is more suitable for a stationary network, while reactive routing is better for a mobile network with a high mobility. In many applications, a node in WMN is mobile but it can fluctuate between being mobile. Wireless mesh networks is an emergent research area, which is becoming important due to the growing amount of nodes in a network.

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A compact stack antenna consisting of square patch, loop couplers and inset feed line is reviewed in this work. This proposed design represents a stacked patch antenna having an arrangement of two substrates separated by an air gape and a coupling is provided using square loop structure. The structure is reviewed in two different directions firstly the feed arrangement is varied and secondly a variation in coupler structure is done to make the antenna work at multiple frequencies in UWB range. The simulation results of this work with different resonator structure and feed structures are presented and comparative analysis of these different arrangements is presented in this paper. Simulation results obtained from the proposed antenna for return loss, polar radiation and pattern voltage standing wave ratio (VSWR) shows its suitability for ultra wide band application.

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MANETS are working in distributed environment and dynamically changing the network topology. MANET protocols can be table driven or on demand as per requirement. DSDV (Destination Sequenced Distance Vector) and OLSR (Optimized Link State Routing protocol) both are table driven (proactive) protocol. Performances of both proactive protocols are evaluated using NS-2 simulator under various metrics and no. of mobile nodes is 10 in the network.

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This dissertation proposes a wind energy conversion system is composed of a wind turbine PMSG, a rectifier, and an inverter. The wind turbine PMSG transforms the mechanical power from the wind into the electrical power, while the rectifier converts the AC power into DC power and controls the speed of the PMSG. The controllable inverter helps in converting the DC power to variable frequency and magnitude AC power. With the voltage oriented control, the inverter also possesses the ability to control the active and reactive powers injected into the grid. Multilevel inerter is used to step up the voltage and to reduce the THD. Here nine level and eleven level inverter are used and the voltage increases and THD reduces from 12.87 % to 7.46 %. Active and reactive power is controlled dc stabilization and the reactive power is near to unity Here PI controller is used to control the inverter output rms voltage and LC filter is used to remove the harmonics available in the system.

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This paper reports the design and development of a smart wireless sensor network (WSN) for an agricultural environment. Monitoring agricultural environments for various factors such as light, temperature and humidity along with other factors can be of significance. The sensor data is transmitted to network coordinator which is heart of the wireless personal area network. In the modern scenario wireless networks contains sensors as well as actuators. ZigBee is newly developed technology that works on IEEE standard 802.15.4, which can be used in the wireless sensor network (WSN). The low data rates, low power consumption, low cost are main features of ZigBee. WSN is composed of ZigBee coordinator (network coordinator), ZigBee router and ZigBee end device. The sensor nodes information in the network will be sent to the coordinator, the coordinator collects sensor data, stores the data in memory, process the data, and route the data to appropriate node.

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In this paper, wear of polycrystalline diamond (PCD) cutting tools and the surface integrity during machining of SiC – Metal Matrix Composite (MMC) is discussed. An attempt is made to establish relation between the hardness of the tool and the flank wear. A newly developed PCD tool, which is superior in hardness with lower flank wear than the conventional tools is introduced. During machining with PCD tools, the severity of transfer material on the tools increased significantly with cutting distance and cutting speed. The superior surface finish obtained with the PCD tools cannot be merely explained by their low wear. The low degree of adhesion that these tools had with the work material appeared to be the main reason for the superior surface obtained at both low and high cutting speeds. At low cutting speed, when the use of coolant resulted in a marked reduction in the amount of work material on the machined work pieces, high Ra and P-V values can be obtained.

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In Mobile Ad hoc network (MANETS), no fixed infrastructure is available. Different wireless hosts are free to move from one location to another without any centralized administration, so, the topology changes rapidly or unpredictably. Every node operates as router as well as an end system. Routing in MANETs has been a challenging task ever since the wireless networks came into existence. The major reason for this is continues changes in network topology because of high degree of node mobility. The MANET routing protocols have mainly two classes: Proactive routing (or table-driven routing) protocols and Reactive routing (or on-demand routing) protocols. In this paper, we have analyzed various Random based mobility models: Random Waypoint model, Random Walk model, Random Direction model and Probabilistic Random Walk model using AODV and DSDV protocols in Network Simulator (NS 2.35). The performance comparison of MANET mobility models have been analyzed by varying number of nodes using traffic TCP. The comparative conclusions are drawn on the basis of various performance metrics such as: Routing Overhead (packets), Packet Delivery Fraction (%), Normalized Routing Load, Average End-to-End Delay (milliseconds) and Packet Loss (%).

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PEDM has become an effective method of machining extremely tough and brittle electrically conductive materials. It is widely used in the process of making moulds and dies and sections of complex geometry and intricate shapes. The work piece material selected in this experiment is EN 31 taking into account its wide usage in industrial applications. In today’s world 304 stainless steel contributes to almost half of the world’s production and consumption for industrial purposes. The input variable parameters are type of powder, current, pulse on time and powder concentration. Taguchi method is applied to create an L18 orthogonal array of input variables using the Design of Experiments (DOE). The effect of the variable parameters mentioned above upon machining characteristics such as Material Removal Rate (MRR) and Surface Roughness (SR) is studied and investigated. The tool material is copper. All the calculations are made with the help of MINITAB 16 software. Dielectric used for experimentation is kerosene. Two powders silicon carbide and boron carbide of 70 mesh is used. Most influence factor for MRR observed is powder concentration with 49.12 % contribution. For SR peak current with contribution of 43.4 % plays a n important role.

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To study the effect of failure of load carrying elements i.e. columns on the entire structure; 15 storey moment resistant RC buildings is considered. The buildings are modeled and analyzed for progressive collapse using the structural analysis and design software SAP2000. Normally it has been considered only the failure of primary load carrying members like columns, beams, struts, foundations etc. to understand the progressive collapse scenario. This paper involves the effect of slabs in progressive collapse with the failure of column.

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In this paper, design of conventional Rectangular patch Microstrip antenna has been proposed and its performance is analyzed. The design parameters of antenna are selected to achieve compact dimensions as well as best possible characteristics such as high gain, increased bandwidth with minimum return loss. Hence improved design has been demonstrated over elementary one. These antennas have been designed at 2.4GHz which enables its usage in wireless communication domain such as Wireless Local Area Network (WLAN). The antenna design and performance are analyzed using Ansoft HFSS software. These antennas can be used for many wireless communication systems.

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Rapid growth of digital communication and multimedia application increases the need of security and it becomes an important issue of communication and storage of multimedia. Image Encryption is one of the techniques that are used to ensure high security. Various fields such as medical science military in which image encryption can be used. Recent cryptography provides necessary techniques for securing information and protective multimedia data. In last some years, encryption technology has been developed quickly and many image encryption methods have been used to protect confidential image data from illegal way in. Within this paper survey of different image encryption techniques have been discussed from which researchers can get an idea for efficient techniques to be used.

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The rising cost of material is a matter of concern in this developing construction environment. The prices of building material such as cement, sand, gravel etc. are increasing day by day. The reason for increase in cost is high demand and less availability of material. Nowadays, most of the researchers are doing research on the material which can reduce the cost of construction as well as increase the strength. Research on waste material such as fly ash, rice husk, slag and sludge from treatment of industrial and domestic waste water demolished building material is being done. Use of coconut shell in concrete is not only useful economically but also environmentally useful for human being. Coconut shell is one of the main contributors of pollution problem as a solid waste. Coconut shell used as coarse aggregate in concrete encouraged sustainable and environmentally helpful material in the construction field. Since cement rate increases day per day and its availability is decreasing as per time so it can be useful to use coconut shell ash used as substitute of cement in concrete. Coconut shell can be used in the form of powder with epoxy resins or epoxy matrixes in concrete also. Composites are made by combining two or more natural or artificial materials to maximize their useful properties and minimize their weaknesses.

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Aluminum alloy are in great demand in the field of defense, automobile, and aerospace industries. These alloys are known for its light weight, high thermal conductivity, and low coefficient of thermal expansion, high wear resistance, and high strength. Composites materials are the multi-functional materials that are having better properties. They can be utilized for the requirements of any application. In this study, Aluminum oxide were united by using Friction Stir Processing(FSP) into the commercially aluminum alloy-6063. Samples were subjected to the various tool rotating with aluminum oxide powder. Microhardness observations were carried out. The result showed that increasing rotating speed more uniform distribution of Aluminum oxide particles. The microhardness of produced alloy was improved as compared to that of base aluminum alloy.

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Concrete is one of the most widely used construction material in the world. Destruction of concrete structure due to natural calamities like earthquake, tsunami or by the bombardment, it has became a major problem in finding place for dumping the concrete debris particularly in urban areas. This paper deals with the study of strength of concrete incorporating Recycled Aggregate concrete. The main objectives of this investigation is to find out up to what percentage the Natural Coarse Aggregate (N.C.A) can be replaced by R.C.A in the concrete mix and to find out the extra quantity of cement to be added for each percentage replacement by R.C.A to achieve its target mean strength A series of test were carried out to determine the compressive strength, split tensile strength, flexural strength with and without recycled aggregates. Natural coarse aggregates in concrete were replaced with 0%, 20%, 40%, 60%, 80% and 100% of crushed concrete coarse aggregate. For the strength characteristics, the result showed a gradual decrease in compressive strength, split tensile strength, flexural and modulus of elasticity as the percentage of recycled aggregate is increased.

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The rapid growth in semiconductor device industry has led to the development of high Performance potable systems with improve reliability. In such applications, it is extremely important to minimize current consumption due to the limited availability of battery Power. Consequently, power dissipation is becoming recognized as a top priority issue for VLSI circuit design. Leakage power makes up to 50% of the total power consumption in today's high performance microprocessors. Therefore leakage power reduction becomes the key to a low power design. Leakage power dissipation is the power dissipated by the circuit when it is in Sleep mode or standby mode. A significant portion of the total power consumption in high performance digital circuits in deep submicron regime is mainly due to leakage power. Leakage is the only Source. of power consumption in an idle circuit. Therefore it is important to reduce leakage power in portable system.

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The aluminium Al 6061 alloys are mainly used in the application of automobile and aeronautical industries. In the present investigation Al6061 alloy composites having varying weight percentages of (3% - 6%) Silicon Carbide, Fly ash and Red mud were fabricated by liquid metallurgical (Stir Casting) method. The casted composite specimens were machined as per BS: 18: 1962 test standards. The specimens were tested to know the mechanical properties such as tensile test, impact (Charpy) test and wear test. The result reveals higher tensile strength, impact strength and wears resistance in Al6061-SiC-Flyash samples when compared to Al6061-SiC-Redmud samples.

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Light weight metals like magnesium and its alloys are in more use these days in automotive & aerospace industries. Magnesium based hybrid structures which are combinations of magnesium and another material like Aluminium can offer optimal technical performance due to the favorable strength-weight ratio. Materials with improved tribological properties have become the pre-requisite of advanced engineering design. Metal matrix composites (MMCs) exhibit a unified combination of good tribological properties and high toughness of the interior bulk metal when compared with monolithic materials. Stir processing, a microstructure modification technique, has emerged as one of the processes used for fabrication of MMCs. Commercial cast or wrought type Mg-Al-Zn AZ-series alloys, such as AZ91 9 wt.% Al and 1 wt.% Zn, have been widely used in automobiles or electronic appliances. Tribological performance of the fabricated composite will be investigated using pin-on-disc wear & friction monitor. In this paper, a novel approach of making hybrid preforms with two types of reinforcements, i.e., lowcost and different sized particles, for magnesium-based composites is planned. This paper investigates the wear behavior of magnesium alloy (similar to commercially available AZ91) based metal-matrix composites (MMCs) reinforced with Silicon Carbide (SiC) & Aluminium oxide (Al2O3) particulates during dry/wet sliding.

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This work deals with fabricating or producing magnesium based metal matrix composite and then studying its mechanical and tribological properties such as microstructure, tensile strength, impact strength and wear behavior of produced test specimen. In the present study a modest attempt has been made to develop magnesium based MMCs with reinforcing material, with an objective to develop a conventional low cast method of producing MMCs and to obtain homogeneous dispersion of reinforced material. To achieve this objective stir casting technique has been adopted. An Alloy similar to commercially available composition of AZ31 and SiC, Al2O3 has been chosen as matrix and reinforcing material respectively. Experiment has been conducted by varying weight fraction of 3% SiC and 1% Al2O3 & 1% SiC and 3% Al2O3 in matrix metal. The result shown that tensile strength, impact strength, wear resistance is good in matrix metal as compared to used weight compositions of SiC and Al2O3 in the composites.

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Quality of work life is the degree to which individuals are able to satisfy their important personal needs while employed by the firm. Quality satisfaction, motivation, involvement and commitment individuals experience with respect to their lives at work Quality of work life is a process in organizations, which enables its members at all levels to participate actively and effectively in shaping the organization environment, methods, and outcomes. The objective of the study is to help the organization to know the level of satisfaction of the workers and executives at various hierarchical levels, towards the facilities and welfare amenities provided by them and also to find out the challenges and difficulties faced by the management in providing better quality of Work life to the employees. Most of the employees covered under my study have not been found to be feeling any stress in their jobs and related working environment. It has been an interesting revelation that there is no employee in ORGANISATION, is working here just for the sake of the job and most of the employees are not only comfortable with ORGANISATION, but also feeling proud of being in the company There should be no communication gap between the team leader and group members. The communication flow must be improved to make it smooth to maintain cordial inter personal relations in the organization. The training and development programs have to be more effectively planned and implemented.

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