-
Fuzzy MCDM approach for Air Quality Assessment
Mrs. Karishma Chitnis ; Mrs.Dr.Anjali.K.Khambete; Mr. Gowtham.Sarella; Mr. Randhavane Shrikant
Environment Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 59 - 65
Due to industrialization and urbanization rate of air pollution is raising in developing countries which has given need to work out Air quality Indices which gives single value with respect to its effects on the human health due to air pollution. The vagueness related to classification of concentration of different pollutants for calculation of AQI depend on location is to be used leads to limitation of general AQI method. To deal with such limitation in this study Fuzzy MCDM approach has been used for AQI calculation using case study for vapi area (one location) for duration of March 2013- February 2014.It includes six pollutants(PM10, PM2.5, NOx, CO, SO2, O3) for AQI calculation. Depending on result Fuzzy MCDM approach for Air Quality assessment can be considered as effective tool.
Read More...
-
SEMI-ACTIVE SUSPENSION FOR TWO WHEELERS
Sanoop Soman ; Sherry Shaji; Vipin T Thomas; Vishnu E.M; Arun K Varghese
Automotive Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 66 - 71
The Suspension of vehicle serves multi-purpose. It contributes to handling and provides comfort and safety. The most common form of front suspension for a modern motorcycle is the telescopic fork. The present telescopic suspension behaves in a similar manner at all road conditions. For example, a two wheeler with rigid suspension provides good handling and riding comfort on highways at high speeds. But it may not be suitable to rough road conditions. For such roads much softer suspension is preferred. It is clear that if the nature of the suspension can be varied according to the road conditions it will contribute to handling and riding comfort. The existing telescopic suspension in motorcycle is ‘passive’ in nature. In such a suspension the suspension characteristics are fixed by mass, spring and damper elements which are non-adjustable. They are effective only over a narrow range of disturbance inputs. A typical semi-active suspension is composed of a spring type element and a damper that is continuously adjustable. Thus the damper characteristics are continuously variable which makes it more preferable over passive suspension. In our work, we are developing an economic semi-active suspension system for two wheelers by modifying the existing telescopic suspension. Here we are varying the pressure of air column above the damping oil which changes the stiffness of the suspension. Thus the suspension characteristics can be varied by the rider according to the road condition and thus good handling and riding comfort can be achieved. The major advantage of this semi-active suspension is that it uses pressurized air for its functioning which is easily available and is of low cost. Also the rider has the provision to adjust the suspension according to his will which make it more flexible and user friendly.
Read More...
-
Secure and privacy approach in mobile healthcare
HAMSA PRIYAA.M ; AMBIKA.S; LALITHA.R; RAJAKUMARI.K
Information Technology
Year: 2015, Volume:1, Issue : 11
Pages: 72 - 77
The m-Healthcare system can benefit medical users by providing high-quality pervasive healthcare monitoring, the growing of m-Healthcare system still strangest on how we fully understand and manage the challenges facing in this m-Healthcare system, especially on during a medical emergency. A secure and privacy-preserving opportunistic computing framework, called SPOC, for m-Healthcare emergency is proposed. With SPOC, smart phone resources including computing power and energy can be opportunistically gathered to process the computing-intensive personal health information (PHI) during m-Healthcare emergency with minimal privacy disclosure. An efficient user-centric privacy access control in SPOC framework is introduced which is based on attribute access control and also a new privacy-preserving scalar product computation (PPSPC) technique is introduced to makes a medical user (patient) to participate in opportunistic computing in transmitting his PHI data.
Read More...
-
TO STUDY THE SURFACE PROPERTIES OF GFRP IN USM BY USING TAGUCHI METHODOLGY
Gurjinder Singh Sahi ; RamindernSingh; Rajpal
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 78 - 82
USM has become an important and cost-effective method of machining extremely tough and brittle materials. It is widely used in the process of drilling and machining on sections of complex geometry and intricate shapes. The work piece material selected in this experiment is GLASS FIBRE REINFORCED PLASTIC (GFRP) taking into account its wide usage in industrial applications. In today’s world GFRP contributes to almost one third of the world’s production and consumption for industrial purposes. This material is not used for traditional machining due to chipping or fracturing. Many similar problems can be successfully solved using ultrasonic technologies. The input variable parameters are type of tool material, frequency, amplitude, concentration in usm. Taguchi method is applied to create an L’18 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), Surface Roughness (SR) and Tool Wear Rate (TWR) studied and investigated. The tool material is titanium (ASTM-1) and carbide (k20). All the calculations are made with the help of MINITAB 16 software. Most influence factor for MRR is observed as amplitude with 67.27% contribution. For SR amplitude with contribution of 33.3% and TWR is observed as frequency with 44.4% contribution plays an important role.
Read More...
-
Study of Energy Consumption in Residential and Commercial Sector of Hubli City
padmavati K Umachagi ; Jangali Satish G; B B Kotturshettar
Industrial Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 83 - 91
Energy is fundamental for economic progress of nation. Energy input is vital in every sector of an economy for survival and growth. The consumption in residential and commercial sector is going to rise further in the near future, as we see increase in population. Homes and business represent a significant portion of global energy demand, especially when electricity usage is considered. Globally this demand will grow substantially in the residential and commercial sector. The energy use in residential and commercial sector is an important area for campaigns to conserve energy. For a developing country like India, characterized by severe energy shortages, the need for energy conservation is of top most priority. The energy efficiency improvements in these sectors go a long way in their sustainable development. The share of different energy carriers used in both the sectors such as electricity, diesel and LPG is studied. The energy efficiency level is computed in both the sector in terms of Specific Energy Consumption (SEC). The factors influencing the energy efficiency and energy consumption in these sectors is studied. The factors are analyzed using multiple regression models. The regression analysis is carried out using SPSS (Statistical Package for Social Science software version 20). Barriers and drivers for the efficient use of energy in both the sectors are also identified and ranked using their average scores.
Read More...
-
BIG DATA SENTIMENT ANALYSIS USING HADOOP
Merin K Kurian ; Vishnupriya S; Ramesh R; Divya G; Divya D
Computer Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 92 - 96
Social media gives users a platform to communicate effectively with friends, family, and colleagues, and also gives them a platform to talk about their favourite (and least favourite brands). This “unstructured†conversation can give businesses valuable insight into how consumers perceive their brand, and allow them to actively make business decisions to maintain their image. Rapid increase in the volume of sentiment rich social media on the web has resulted in an increased interest among researchers regarding Sentimental Analysis and Opinion Mining. However, with so much social media available on the web, Sentiment Analysis is now considered as a Big Data task. The main focus of the research was to find such a technique that can efficiently perform Sentiment Analysis on Big Data sets. In this paper Sentiment Analysis was performed on a large data set of tweets using Hadoop and the performance of the technique was measured in form of speed and accuracy. The experimental result shows that the technique exhibits very good efficiency in handling big sentiment data sets.
Read More...
-
Lever Driven Bicycle
Rahul Mohan M ; Mebin Mathew; Natheem Nasar; Vijaya Krishnan R; Er. K C Joseph
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 97 - 101
The bicycle is only one of the many man-developed lever systems for land transport, but it is the sole remaining type that has a limited propulsive power. Millions of people around the world still rely on their trusty clunkers for cheap and efficient transportation. In fact, the global fleet approaches a billion, with the vast majority circulating in developing countries like Cuba and China where automobiles remain a luxury. Recreational riders continue to take to their wheels for exercise, adventure, and companionship. The Lever Driven Bicycle consists of the following parts: mounting plate, torsion spring and oscillating lever. The lever is pivoted at a point on the mounting plate which is fixed to the bicycle frame and a torsion spring is present in between the mounting plate and the lever. The end of the lever contains a gear sector which is in mesh with the free wheel. This changes the existing conventional driving mechanism by the oscillating motion of a lever into rotatory motion of the wheel. The downward motion of the lever is powered by the human leg and the return or the upward movement of the lever is achieved by the use of torsion spring. The main objectives of this project work is to reduce the effort which is required for cycling and provides a means of transportation to peoples with small disability to his or her legs (i.e. a person with a leg shorter than the other), reduced maintenance which is regularly required for a conventional bicycle (lubrication and tightening of the chain, freewheel and crank set), provides a way of transportation by applying effort only on a single lever and a new way for cycling to the cycling enthusiasts.
Read More...
-
AN ASSESMENT ON DESIGN PARAMETERS AND VIBRATION CHARACTERISTICS OF HIGH PRESSURE BOILER FEED PUMP FOR AUXILIARY POWER CONSUMPTION
SREENATH K.G ; sachin chacko; sethu sathyan ; nikhil abraham; parvathy venugopal
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 102 - 109
High pressure boiler feed pump is a six stage horizontal centrifugal pump of barrel design casing. At RGCCPP, Boiler feed pump (BFP) takes water from the feed water system i.e. from the deaerator and provide this water to the boiler system, to generate steam which is responsible for rolling the Turbine to generate electricity. Normally Feed water pumped to the boiler is pumped to the Boiler's Drum where at the top point of the boiler, so we have to provide a pump that can handle huge pressure with high discharge to the boiler. BFP is usually rotate with 5000 rpm, 150 bar and can provide about 265 T/H. The HPBFP discharge pressure was around 160 kg/cm2, whereas HP Drum pressure (i.e. working pressure) is around 80 kg/cm2. So there was a large difference in pressure in HP Drum and HPBFP discharge, which should be the same. Various methods suggested for controlling HPBFP discharge pressure are,a) Throttling, b) Fluid coupling, c) Impeller trimming, d) Variable frequency drive, e) Replacement of HPBFP gear box with modified gear box, f) Magnadrive Among these Replacement of HPBFP gear box with modified gear box is the accepted solution by the industry. Modifying the gear ratio reduces output speed of BFP. As speed reduces, discharge pressure also reduces. Our aim was to reduce discharge pressure of BFP, thereby finding the most efficient method of reduced power consumption, which increases the efficiency of the plant. As the gearbox is getting replaced, it is essential to study vibration behavior of the pump. Hence experimental and numerical analysis of vibration characteristics is analyzed.
Read More...
-
MODELING AND ANALYSIS OF NON-PNEUMATIC TYRES WITH HEXAGONAL HONEYCOMB SPOKES
Sachu Zachariah Varghese ; Kuriakose J Marattukalam ; Shibin Samuel ; Sooraj Sreekumar ; Vinay T V
Mechanical Engineering
Year: 2015, Volume:1, Issue : 11
Pages: 110 - 117
A pneumatic tyre is made of an airtight inner core filled with pressurized air. Pneumatic tyre have been dominant in the world market due to many advantages like low mass design, low vertical stiffness and low contact pressure. However, it have certain disadvantages like the possibility of a flat while driving, complex manufacturing procedure, the required maintenance for proper internal air pressure. Hence Non-Pneumatic tyres are introduced to overcome these disadvantages. Non-pneumatic tyres (NPT) are introduced with a compliant cellular solid spoke component which functions as air of a pneumatic tire. This project investigates hexagonal honeycomb spokes for NPT tire under macroscopic uni-axial loading. The spokes of an NPT undergoes tension-compression cycle while the tyre rolls. The spokes of an NPT is required to have both stiffness and resilience, which are conflicting requirements. Three types of honeycomb spokes are designed in AUTOCAD, namely A, B and C. Three dimensional models are created in CATIA. The mass of the designed tyres are found out. ANSYS finite element analysis is used to study about the deformation and stresses developed in different type of honeycomb spokes. Type C honeycomb spokes are found to be better considering both fatigue resistance and lower mass design.
Read More...
-
Automated Timetable Generator
Ansari Zaeem ; Ansari Aamir; Ansari Ahmed
Information Technology
Year: 2015, Volume:1, Issue : 11
Pages: 118 - 121
The traditional hand operated method of time table is very time consuming and usually ends up with various classes clashing either at same room or with same teachers having more than one class at a time which is being resolved by Automated time table scheduling. This project introduces a practical timetabling approach capable of taking care of both hard and soft constraints required specially for preparing time table in colleges with large number of students and limited resources like class-rooms or labs. The automated time table scheduling provides easier ways for teachers and student to view their timetable once they are finalized over the application, having individual login id and passwords, and also some staff usually takes the previous year’s timetable and modify it but still it is a tedious job to incorporate changes. To overcome all these problems we propose to make an automated system. This paper also presents an evolutionary algorithm (EA) based approach to solving a heavily constrained university timetabling problem which has been used in other projects also.
Read More...
Abstract
