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Five-Level Full-Bridge Zero Voltage and Zero Current Switching DC-DC Converter Topology
V. Sivaparvathi, M-Tech ; Sri.J. Sivavara Prasad, M-Tech (Ph.D)
Electrical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 1 - 12
This project proposes a development of soft switching scheme for Five level DC-DC converter is used to provide zero voltage switching condition for all the controlled switches. In this paper, the gate pulses are generating from PWM controller. This paper describes the main operational modes of the proposed converter as well as simulation results and also observes and compares the switching losses of the proposed converter with and without zero voltage switching scheme.
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Phishing Attack Prevention using Site Privileges
Ramesh R ; Divya G
Information Technology
Year: 2015, Volume:1, Issue : 11
Pages: 13 - 17
Phishing attacks can be mitigated effectively by utilizing the existing services offered by websites in the form of referrals. Phishing attack prevention methods are so far based upon browser integrated third party software. Our proposed methodology effectively provides clients willing to access financial websites an indirect path to their target site securely.
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Plasma Gasification of municipal solid waste
Heta Gandhi
Chemical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 18 - 24
Plasma gasification is a technology which can process landfill waste to extract commodity recyclables and convert carbon-based materials into fuels. Utilizing this technology to convert municipal solid waste (MSW) to energy has great potential to operate more efficiently than other pyrolysis and combustion systems due to its high temperature, heat density, and nearly complete conversion of carbon-based materials to syngas, and non-organics to slag. Syngas is a simple fuel gas comprised of carbon monoxide and hydrogen that can be combusted directly or refined into higher-grade fuels and chemicals. Slag is a glass-like substance which is the cooled remains of the melted waste; it is tightly bound, safe and suitable for use as a construction material. Plasma torch technology has proven reliable at destroying hazardous waste and can help transform environmental liabilities into renewable energy assets.There is a plasma gasification plant in Utashinai, Japan. It is the largest plasma gasification plant in the world and was built by Hitachi Metals Ltd. using Westinghouse plasma corporation plasma gasification process. The plant takes up 300 tonnes per day of MSW as feedstock and produces 7.9MW of energy, of which 3.6MW is used by the plant and the rest is sent to a central processing grid which can be used to provide a part of the power required by the city or for any other constructive purpose. Based on the model of Japan’s plasma gasification plant, in this paper an attempt has been made to offer a lasting environment friendly solution to Mumbai’s twin problems of tonnes of daily waste generation and disposal, and recurrent power shortage.
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Motivation and Institutional Governance - A Key to Learn English language
Mrs.P.Padmapriya ; Dr.P.Srinivas Rao
other
Year: 2015, Volume:1, Issue : 11
Pages: 25 - 30
The globalization era needs the competency in English language in order to enhance the working domain knowledge of business, technology, huge social transformation and cross culture dynamics. The importance of English language is growing around all continents of the world of its convenience, the impact of social media, information, and technology reachablity. According to Wall Street institute (2013) nearly 125 countries and 18 international organizations use English as an official language after their native language. However there are some factors which influence competency gap due to influence of the native culture and demographic profile of the learners. Some of the countries both in Europe and Asia are not much comfortable in English language. The factors which influence student learner are basically the factors of motivation and institutional governance. The research paper is focused to understand the motivational factors and institutional governance behind English language and its impact on the real time practice with special reference to the students of pre-university of Visakhapatnam city and also to understand the various source of learning.
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Talent Explorer Using Data Mining
Anandkumar Jha ; Amit Dichwalkar; Afsar Shaikh; Ganesh Pawar
Computer Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 31 - 35
Our proposed application, ‘Talent explorer using data mining’ is based on educational data mining and can be operated using client-server architecture. It would take into account the previous performances of a student and predict whether a student is hardworking, aspiring and has a correct attitude or not based on analysis. So if the answer obtained is yes then the teaching staff can use this data to nurture the students in an effective manner if they wish to. The same data can also be used by the companies for recruiting students as employees by considering their overall past performances. The application can act as an assistant to the human resource department for taking decisions more effectively related to recruitment of students and also assist the placement cell in identifying and strengthening the weak candidates for placements.
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The Effect of Process Parameter on Weld Depth in Gas metal arc Welding Process
Tarun Patel, Prof.Saumil C Patel ; Tarun Patel; Prof.Saumil C Patel
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 36 - 40
GAS METAL ARC welding (GMAW) is a process that melts and joins metals by heating them with an arc established between a continuously fed filler wire electrode and the metals. The process is used with shielding from an externally supplied gas and without the application of pressure. The American Welding Society refers to the process Gas Metal Arc Welding process to cover arc lengths of electrode and the feeding of the wire are automatically controlled. inert as well as active shield gasses. GMAW is basically a semi-automatic process, in which the Taguchi Technique is used to plan the experiments. The Taguchi method has become an influential tool for improving output during research and development. Taguchi strongly recommends for multiple runs, is to use the signal-to-noise (S/N) ratio for the same steps in the analysis. In this research work of Gas Metal Arc Welding (GMAW) show the effect of Current (A), Voltage (V), Gas Flow rate (Ltr/min) and on weld depth of ST-37 low carbon alloy steel material. In this Experiment we done Experiment by using L9 orthogonal Array to find out weld depth and also perform confirmatory Experiment to find out optimal run set of current, voltage speed and gas flow rate.
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Energy Conservation in “Air Conditioning and Refrigeration Systems
Perane Nitin Dagadu ; Mate Nikhil Hiraman
Electrical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 41 - 43
Conservation of energy refers to the elimination of practices which waste energy. Conservation also includes using technology to eliminate waste and loss of energy. Energy is one of our most important resources. Our energy consumption could increase a great deal in the year ahead. Power officials estimate the energy consumption could almost triple during next twenty years. We could reduce our use of energy by conserving. Conservation must occur in Residential, commercial, Industrial and Transportation. Air- Conditioning and refrigeration constitutes up to 35% of total energy consumption used in various system .The potential of energy conservation varies depending on the design of the system, the method of operation, operating standard, maintenance of controlled system, monitoring of system and competence of user. This paper discussed regarding the energy conservation in ACR system by using above parameters. Implementation of maintenance plan, installing control and upgrading the equipment is the good way to save energy. Energy conservation is not only using less energy but also to use energy in responsible way. Good conservation practices today can help to ensure adequate energy supplies in the future
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Agricultural Fertilizers and Pesticides Sprayers - A Review
Nitish das ; Namit Maske; Vinayak Khawas; Dr. S.K. Choudhary; Er. R.D. Dethe
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 44 - 47
Day by day the population of India is increasing and to fulfill the need of food modernization of agricultural sectors are important. Due to chemical fertilizers the fertility of soil is decreasing. Hence farmers are attracted towards organic farming. By mechanization in spraying devices fertilizers and pesticides are distributed equally on the farm and reduce the quantity of waste, which results in prevention of losses and wastage of input applied to farm. It will reduce the cost of production. It will reduce the cost of production. Mechanization gives higher productivity in minimum input. Farmers are using same traditional methods for spraying fertilizers and pesticides. Equipment is also the same for ages. In India there is a large development in industrial sectors compared to agricultural sectors. Conventionally the spraying is done by labors carrying backpack sprayer and fertilizers are sprayed manually. The efforts required are more and beneficial by farmers having small farming land.
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Design and Fabrication of Hand Pump Operated Water Purification System Using Reverse Osmosis
Nikhil Jacob Zachariah ; Sachin Tomy; Vijith K; Vimal P Sunil; Jason Cherian Issac
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 48 - 54
Drinking water is a necessity to which millions of people throughout the world have limited access. Water is often seen as the most basic and accessible element of life, and seemingly the most plentiful. More than a billion people lack access to drinking Water. Simply providing access to clean Water could save two million lives each year. As the population grows, the freshwater available to each resident dwindles. Water purification is the removal of contaminants from untreated water to produce drinking water that is pure enough for human consumption. Substances that are removed during the process include parasites, bacteria, algae, viruses, fungi, minerals (including toxic metals such as lead, copper and arsenic), and man-made chemical pollutants. In this paper, an apparatus and methods for producing purified drinking water are disclosed. A hand pump is used in a closed system to generate pressure to pass the water through a series of filters and a reverse osmosis membrane to obtain potable water at the outlet. The flow obtained was analysed using ANSYS and the system delivering highest output was chosen. The project facilitates the availability of pure drinking water without using any electrical components or devices. It is a cheap and efficient means to produce drinking water.
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attendance management system using face recognition
Chavan Rohit ; Phad Baburao; Futak Vinayak; Sawant Sankalp; Rawat asha
Computer Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 55 - 58
Face recognition is the identification of humans by the unique characteristics of their Faces. Face recognition technology is the least intrusive and fastest bio-metric technology. It works with the most obvious individual identifier the human face.This research aims at providing a system to automatically record the students’ attendance during lecture hours in a hall or room using facial recognition technology instead of the traditional manual methods. The objective behind this research is to thoroughly study the field if pattern recognition (facial recognition) which is very important and is used in various applications like identification and detection.
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Abstract
