In this study, composites-casting with an aluminium alloy C355 and 5(wt.%) of SiC reinforcement were made. Side by side investigations of tensile strength of the composite was done, 17 samples were fabricated for this study and these samples were machined as per dimension by which tensile test samples were obtained. Aluminium has low weight since its mechanical properties are not so good as compared to iron (Fe). So by reinforcing a material like SiC, mechanical properties can be improved of A1 and it can be used in military and aerospace industry because of its low weight and good mechanical properties which is the primary requirement for aerospace industry. The mechanical properties of the fabricated composite are improved in relation to the base alloy, which have an enhanced wear resistance, favourable mechanical properties at room temperature.

Wire electrical discharge machining (WEDM) is being widely used for a long time for machining conductive work materials which are difficult to be machined by the main stream machining processes. WEDM has evolved from a simple means of making tools and dies to the best alternative of producing micro-scale parts. This could be achieved with high degree of dimensional accuracy and surface finish. This paper reviews the comprehensive history of WEDM process and its parameters, performance of measures and applications. The review of research literature focuses on machining of metal matrix composite (MMC) by WEDM and the possible trends for future research in this area.

Enterprise resource planning (ERP) systems are increasingly being adopted by organizations in developed countries, this adoption seems beset by significant rates of faliure, leading to a large waste of investment and other resources. This paper seeks to understand why ERP failure occurs. In doing this, it moves beyond the factor lists that have so far dominated analysis. Instead, it makes use of the "design—reality gap" model. This conceptual framework aims to be comprehensive but also contingent; sensitive to the specific conditions of any individual client organization. The design—reality gap model is applied to a case study of partial ERP failure in a Vishal mega mart manufacturing to retailing firm. The model analyses the situation both before and during ERP implementation. It finds sizeable gaps between the assumptions and requirements built into the ERP system design, and the actual realities of the client organization. It is these gaps — and the failure to close them during implementation that underlies project failure. The paper draws conclusions about good practice in ERP impiejneniation relating to both risk identification and risk mitigation. But it also notes challenges existing in some developing countries contexts that may continue toconstrain the effective use of enterprise resource planning systems.

This paper presents an efficient implementation ofa high speed multiplier using the shift and adds method of Baugh-Wooley Multiplier. This parallel multiplier uses lesser adders and lesser iterative steps. As a result of which they occupy lesser space as compared to the serial multiplier. This is very important criteria because in the fabrication of chips and high performance system requires components which are as small as possible. Experimental results demonstrate that the proposed circuit not only improves the accurate performance but also reduces the hardware complexity and also less power consumption that is dynamic power of 15.3mW and maximum clock period of 3.912ns is required which is very efficient as compared to the reference paper.

This paper is intended to build a High Gain Aperture Coupled Micro-Strip Patch Antenna to improve its radiation performance. The proposed design is based on a new aperture coupling technique in which the slot is fed by a micro strip line coupled to the patch radiators. The patches are employed to reduce the radiation into the half-space that they occupy and increase the radiation in the other half-space. The shape of the patch used is very much responsible for the radiation pattern in the desired direction. Radiation characteristics and bandwidth are also improved by choosing a suitable combination of the shape of feed and slot. Due to this aperture coupling between patch and microstrip slot line, we achieve both improvement in radiation pattern and bandwidth. We achieved 0.563Ghz of 10 dB bandwidth at 3.6 GHz resonant frequency. This design was simulated using HFSS (High Frequency Structure Simulator).

This paper mainly focuses on supplying low voltage continuous load from an electrostatic generator so that it can widely be used in the day to day domestic and industrial applications. Also, it will be discussing limitations and drawback of electrostatic generation and important consideration for dealing with this generation. It will be including a novel circuit which is very compatible in order to get the low reduced voltage and finally demonstrating the performance of proposed circuit using sinuulation model.

Mobile Ad hoc Net-Bork (MANET) is an aggregation of wireless mobile nodes which dynamically exchange data without any fixed infrastructure or a base station. Nodes rely on multi-hop routing protocols to station. Nodes rely on multi-hop routing protocols to forward data packets sent from a source node to a destination node which is out of its transmission range. Consequently this paper is subjected to the comparatnæ study between DSR; AODV reactive (on-demand) routing protocols and evaluates their relative performance in terrns of Packet delivery ratio, Average End-to-End delay and Throughput. From the simulation results and analysis, suitable routing protocol can be identified for a specific network

Composite materials are engineered from two or more materials with significantly different physical or chemical properties. These properties remain separate and distinct at the macroscopic or microscopic scale within the finished structure. These are high density and high strength materials which are used in almost all aspects of the industrial and commercial fields in aircraft, ships, common vehicles, etc. This paper presents a brief review of various explorations on manufacturing of metal matrix composites (MMC's) by stir casting methods.

Electrocardiogram (ECG) signal has been widely used in cardiac pathology to detect heart disease. The ongoing trend of ECG monitoring techniques to become more ambulatory and less obtrusive generally comes at the expense of decreased signal quality. To enhance this quality, consecutive ECG complexes can be averaged triggered on the heartbeat, exploiting the quasi-periodicity of the ECG. However, this averaging constitutes a trade-off between improvement of the SNR and loss of clinically relevant physiological signal dynamics. Recent work has attempted to utilize wavelet techniques in the analysis of biomedical signals including ECG. In this paper Multi-Resolution Analysis property of wavelet transform is used to enhance ECG signal quality by denoising the signal using Daubechies 6 Wavelet as best suited mother wavelet at level 4.

The rise in price and consumption of petroleum products and their effects on the industrialization and modernization of the world have been one of the key issues of the researchers. CI (Diesel) engine, one of the sectors based on the fossil fuel, is a prime issue for environmentalists and economists. To overcome this problem and as a substitute for diesel, biofuel is a better option to conserve the limited reserve of fossil fuels such as petroleum, coal and natural gas. Biodiesel, which is produced from variety of vegetable oils and animal fat through transesterification, has a lot of technical advantages over fossil fuels such as lower overall exhaust emission and toxicity, biodegradability, derivation from a renewable and domestic feedstock and negligible sulphur content. This paper deals with artificial neural network (ANN) modelling of a diesel engine using variable Karanja oil blends to predict the engine performance. To acquire data for training and testing the proposed ANN, a Single cylinder, four-stroke diesel engine was fuelled with blended diesel and operated at different engine speeds and loads. The experimental results exposed that blends of Karanja oil with diesel fuel provide better engine performance. Using some of the experimental data for training, an ANN model was developed based on standard Back-Propagaiion algorithm for the engine. Analysis of the experimental data by the ANN showing that there is a good correlation between the predicted data resulted from the ANN and with the measured ones. Therefore, the ANN proved to be a desirable prediction method in the evaluation of the tested diesel engine parameters

In the present study attention is being focused on comparison of performance of biodiesel derived from waste cooking oil when applied in different proportions in compression ignition engine. A single cylinder four stroke diesel engine (Kirloskar) was tested at various loads with the blended fuel at the rated speed of 1500 rpm. Waste cooking oil biodiesel blended with diesel in proportions of 5%, 10%, 20%, 50% and 100% by volume and pure diesel was used as fuel. Engine performance (specific fuel consumption, brake thermal efficiency, and exhaust gas temperature) were measured to evaluate and compute the behaviour of the diesel engine running on biodiesel. The results show that the brake thermal efficiency of diesel is higher at all loads followed by blends of waste cooking oil, biodiesel and diesel. Experimentally the maximum brake thermal efficiency and minimum specific fuel consumption were found for blends up to 20% waste cooking oil methyl ester at all loads among the blends. Exhaust gas temperature for WCOMEIOO is highest. For the diesel fuel, the exhaust gas tennperature is the lowest among all the tested fuels. The reductions in brake specific fuel consumption and increase in brake thermal efficiency made the blend of biodiesel B20 a suitable alternative fuel for diesel engine.

Today the computer software/systems have become extremely complex. The increased need to distribute data, applications and system resources across geographical boundaries has led to complexity of the software applications. This situation results in overall increase in maintenance efforts and cost. There is a need to have systems which are self-aware, self-protecting, self-healing, self- optimizing, and self-configuring. This would help in cheaper and faster maintenance. Such computing systems and infrastructure would take care of managing themselves. In an autonomic environment, the IT infrastructure and its components are self-managing leading to reduced cost of owning and operating computer systems. The present paper does a study of existing quality characteristics and corresponding metrics, and based on analysis proposes a new set of characteristics as well as metrics to design a robust autonomic computing system.

The present study represents the development of theoretical correlation for pool boiling of nanofluid having TiO2 as nanoparticle and water as base fluid in a mechanically polished stainless steel flat plate as a boiling surface, where the concentration of the TiO2 particles in water increases from 0.32 wt. % to 0.72 wt. % to observe the effects on heat transfer coefficient. The theoretical heat flux compared with the experimental heat flux which is within ±30% error band agreement. Heat transfer coefficient of nucleate pool boiling using nanofluid increases with nanoparticle concentration at high heat fluxes. Approximately 22% increase in heat transfer coefficient is observed for 0.72 wt. % nanoparticle concentration. Thus, newly developed generalized correlation (given below) used knowing different thermal properties of nanofluid and heating surface for prediction of heat transfer cofficient. h={}

Layered silicate composites having polyurethane matrix were prepared by in situ polymerization. Montmorillonite clay was pretreated with centyl tri-methyl ammonium bromide (CTAB) to convert hydrophilic clay into organophilic MMT so that it is compatible with hydrophobic polyurethane matrix. The composites so prepared were characterized for their morphology using SEM and chemical absorption in various chemicals like toluene, ethyl acetate, xylene, hexane, methanol, DMF, tetrahydrofuran, acetone, petroleum ether, distilled water, saline water, and ethanol with varying solubility parameters. The absorption study revealed that depending upon the absorption the solvent can be divided into three categories, high absorbing, medium absorbing and low absorbing depending upon their solubility parameters vis-a-vis polyurethane resin. Two high absorbing solvents i.e. ethyl acetate and xylene, one medium absorbing i.e. ethanol and one low absorbing i.e. saline water here taken to further study the swelling kinetics at 50°C to establish its barrier properties and diffusivity. For all the solvents, the presence of montmorillonite layers caused a decrease in permeability due to more tortuous path for diffusing molecules that must by pass impermeable platelets.