http://ijaems.com/ Open Access international Journal to publish research paper en-us May 2015 In the past history of IC engine design and development, hydrogen has been considered as a better replacement to hydrocarbon based fuels. Hydrogen gas combustion produces uncontaminated exhaust from spark ignition engine due to its desirable characteristics. Hydrogen for the experiment was produced by using fuel cells. This study examines the performance characteristics and emissions of a hydrogen fueled conventional spark ignition engine. Slight modifications are made for hydrogen feeding, which do not change the basic characteristics of the original engine. Comparison is made between the gasoline and hydrogen operation was discussed. The important pollutants from spark ignition engine like HC, CO, smoke and NOx are reduced due to hydrogen combustion. Certain remedies to overcome the backfire phenomena are attempted. http://ijaems.com/detail/analysis-of-hydrogen-fuelled-two-stroke-petrol-engine/ C. Mohamed Samath, C. Syed Aalam http://ijaems.com/upload_images/issue_files/1452671449-1 IJAEMS-MAY-2015-8-Analysis of Hydrogen Fuelled Two Stroke.pdf This paper presents a comparative discover of power switches. Power switches are increasingly becoming dominant leakage power reduction technique. Hence, fast and efficient DFT resolution for examination and diagnosis of power switches is far demanded to enable faster identification of possible faults and their locations. By employing effective discharge route design, that eliminates the potential of false examination and hence considerably cutting the price and discharge times. We validated the effectiveness of our proposed solution across SPICE simulations. In this paper we are going to discover the Complete overview of power switches. http://ijaems.com/detail/overview-of-testing-power-switches-in-vlsi-circuits/ Sami Venkatesh, Uday B, Sk Tabrace, S Premkumar http://ijaems.com/upload_images/issue_files/1452671994-2 IJAEMS-MAY-2015-9-Overview of Testing Power Switches in VLSI Circuits.pdf The subject has long been a matter of concern since the industrialization of the country brought in its pollution hazards. The present exposure to the environmental chemicals is more likely to produce toxicity that adult exposure. Subtle functional deviations in the off-springs of exposed mothers may be one of the most sensitive indications of potential harm from environmental chemicals. The air pollutants contaminate air, water and soil, corrode materials, dirty buildings and clothing, harm plants and wild life and affect human health. To determine that an environmental change is going to be unfavorable requires a careful study of ecological system, known as the ecosystem. In an ecosystem the living organisms are inter-related and well-adjusted to their environment, comprising biotic components of plants, animals and microbes. The correlation between growth transitions of green plants, which grow outdoors and are continuously exposed to pollutants, and pollutant concentrations have helped decipher pollution zones. These zones extend in the direction of the prevailing wind, assuming an elliptic shape; the axis of the ellipse being oriented from south-west to north-east direction with the pollution source at the south-west end. In such instances the north-east extension of the ellipse penetrates deep into the natural and rural habitats. http://ijaems.com/detail/impacts-of-air-pollution-on-human-health-plant-and-vegetation/ Achal Garg, Harinder Yadav http://ijaems.com/upload_images/issue_files/1452672138-3 IJAEMS-MAY-2015-14-Impacts of Air Pollution on Human Health.pdf To meet the demands of multiservice networking, in which traffic of varying bandwidth and delay requirements must be simultaneously serviced, sophisticated traffic and resource management mechanisms are needed. To serve these needs, your ATM switch router uses a shared-memory architecture that offers advanced traffic management and congestion control capabilities. The traffic management features of the ATM switch router provide the following capabilities: • Integrated support for different types of ATM services • Flexible policies for bandwidth allocation through controlled link-sharing services. • Effective use of network resources • The congestion control capabilities of the ATM switch router support the following goals: Avoid conditions where congestion can occur. • Minimize the effects of congestion when it does occur. • Prevent spreading the congestion state to other parts of the network. The specific resource management capabilities of your ATM switch router are platform dependent. http://ijaems.com/detail/advanced-traffic-management-and-congestion-control-capabilities-in-atm-architecture/ Dr. B .G. Prasanthi, Dr. T. BhaskarReddy http://ijaems.com/upload_images/issue_files/1452672336-4 IJAEMS-MAY-2015-18-Advanced Traffic Management and Congestion Control Capabilities in ATM Architecture.pdf Nowadays the Worldwide Interoperability of Microwave Access (WiMAX) technology becomes popular and receives growing acceptance as a Broadband Wireless Access (BWA) system. These networks enable high data transmission rates. WiMAX is the newest wireless broadband Internet technology based on IEEE 802.16 standard. Based on OFDM (Orthogonal Frequency Division Multiplexing), this system uses radio frequency range from 2 to 11 GHz. WiMAX has potential success in its line-of-sight (LOS) and non line-of-sight (NLOS) conditions which operating below 11 GHz frequency. There are going to be a surge all over the world for the deployment of WiMAX networks. Estimation of path loss and signal coverage is very important in initial deployment of wireless network and cell planning. Numerous path loss (PL) models (e.g. Okumura Model, Hata Model) are available to predict the propagation loss, but they are inclined to be limited to the lower frequency bands (up to 2 GHz). In this thesis we compare and analyze different path loss models and signal coverage (i.e. COST 231 Hata model, ECC-33 model, SUI model, Ericsson model and COST 231 Walfish-Ikegami model) in different receiver antenna heights in urban, suburban and rural environments in NLOS condition. Our main concentration in this thesis is to find out a suitable model for different environments to provide guidelines for cell planning of WiMAX at cellular frequency. From calculations, that I made, can be concluded, that FSPL model, gives the lowest path loss, in all type of terrains – rural, suburban and rural areas. Model ECC-33 can predict path loss in urban and suburban areas, but it is unusable in rural areas. Also I can conclude, that model SUI, has approximately the same values of path loss with those, computed with FSPL model. My research shows that all Pathloss will be less in Rural areas compared to urban and suburban, Signal coverage will be more in suburban areas than in urban areas. http://ijaems.com/detail/implementation-performance-of-mobile-wimax-for-various-propagation-models/ Dontabhaktuni Jayakumar , Modi Grace Priscilla , Madhavuni Sandhya Rani http://ijaems.com/upload_images/issue_files/1452672600-5 IJAEMS-MAY-2015-24-Implementation Performance of Mobile Wimax for Various Propagation Models.pdf Agent group communication is one of the most important functionalities that should be reconsidered for highly dynamic and large-scale distributed agent systems. Although previous researches on this topic have actively been performed, there is little research work that addresses the various important issues or properties such as reliability, scalability, causal order and so on harmoniously due to their respective limitations. In this paper, we introduce our novel work that have already been done to achieve the goal mentioned above, and compare it with the existing ones in detail. http://ijaems.com/detail/causally-ordered-message-delivery-protocol-for-mobile-agent-groups/ Jinho Ahn http://ijaems.com/upload_images/issue_files/1452672750-6 IJAEMS-MAY-2015-23-Causally-Ordered Message Delivery Protocol.pdf Any CAE (Computer Aided Engineering) software the first result will be in contour manner which comes with the colour scale (Legend).But that will only give rough scenario about what is happening inside the layers in object when force is applied. That result is in iso-surface mode. Different members like Slabs, Beams and beam column joints behavior can be decided by the plane stress. An iso-surface is a three-dimensional analog of an iso-line. It is a surface that represents points of a constant value within a volume of space. Computer aided investigations on a solid object are carried out using the ANSYS 15.0 software to verify maximum stress and its location. To predict detailed stress values with 3D model created itself by Ansys 15.0 15. Solid object is made with the two imprinted faces on it for the application of dynamic analysis. Dynamic analysis is done by dividing time in to fractions & after that iso-surface is studied. Material used during the research is structural steel due to its importance and availability. The behavior of iso-surface changes with respect to the boundary condition viz. contact area of force. Visual representations of iso-surfaces are ubiquitous in the scientific and engineering literature. In this paper, we present techniques to assess the behavior of iso-surface extraction codes. More concretely, we derive formulas for the expected order of accuracy (or convergence rate) of several iso-surface features, and compare them to experimentally observed results in the selected codes. This technique is practical: in two cases, it exposed actual problems in implementations. We provide the reader with the range of responses they can expect to encounter with iso-surface techniques, both under "normal operating conditions" and also under adverse conditions. Armed with this information the results of the verification process--practitioners can judiciously select the iso-surface extraction technique appropriate for their problem of interest, and have confidence in its behavior. The material taken is structural steel in which the linear behavior is taken consideration in this case. http://ijaems.com/detail/dynamic-stress-analysis-with-different-boundry-conditions-by-iso-surface-behaviour/ Parth K Pandya, Anuj Kumar Sehgal http://ijaems.com/upload_images/issue_files/1452672935-7 IJAEMS-MAY-2015-27-Dynamic Stress Analysis with Different boundry Conditions by ISO-Surface behaviour.pdf Aperture antennas are used mostly for the microwave frequencies. Aperture antennas can be designed using the different configuration of geometry. These aperture antennas are used for space applications because they are more practical for space applications .There are different types of aperture antennas such as slot antenna, micro -strip slot antenna, Horn antenna, - casse grain. Antenna. In this paper we are going to compare the power radiated by the different types of Aperture antennas. http://ijaems.com/detail/design-of-different-types-of-aperture-antennas-using-hfss/ M. Puneeth, S. J. S. Rajesh http://ijaems.com/upload_images/issue_files/1452673138-8 IJAEMS-MAY-2015-32-Design of Different types of Aperture Aantennas using HFSS.pdf Noise means any unwanted sound. In signal processing or computing noise can be considered as a random unwanted data or signal that does not have any meaning. It means that the noise is not being used to transmit with a signal, i.e. addition to the signal is called noise. Adaptive filter have the ability to adjust their impulse response to filter out the correlated signal in the input. They require little or no a priori knowledge of the signal and noise characteristics that is correlated in some sense to the signal to be estimated. Unlike Non-adaptive or fixed filters have static or fixed filter coefficients and are designed to have a frequency response chosen to alter the spectrum of the input signal in a desired manner. The adaptive algorithm generates this correction factor based on the two factor i.e. input signal and error signals (difference between output and the desired signal). In this paper we proposed LMS and RLS, kalman algorithms define three different coefficient update algorithms. And evaluating these three techniques & choose best one. http://ijaems.com/detail/evaluation-of-adaptive-noise-cancellation-using-various-algorithm-techniques/ Mr. Kulvinder Singh, Mr. Kapil Sachdeva http://ijaems.com/upload_images/issue_files/1452674134-9 IJAEMS-MAY-2015-28-Evaluation of Adaptive Noise Cancellation using various Algorithm Techniques.pdf