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MOBILE DEVICES OVERVIEW
Get PDFNow a day\u27s mobile devices are multi-functional devices capable of hosting a broad range of applications for both business and consumer use. Personal Digital Assistants (PDA) and the ever-growing category of smart phones allow people to access the Internet for e-mail, instant messaging, text messaging and Web browsing, as well as work documents, contact lists and more. This paper presents an overview of mobile devices and also the operating systems used in the devices
FAULT-PRONE COMPONENTS IDENTIFICATION FOR REAL TIME COMPLEX SYSTEMS BASED ON CRITICALITY ANALYSIS
Get PDFGenerally, complexity of Software affects the development and maintenance Cost. The Complexity of the software increases, when the number of Components increase, among these components, some are more critical than others which will lead to catastrophic effects on field use. Hence, it is needed to identify such critical components after coding to test them rigorously. In this paper, we presented a novel approach that helps to identify the critical components in the software based on Criticality Analysis. Criticality Analysis analyzes the critical value of each component based on their Sensitivity and Severity metrics
INCREASING ACCURACY OF K-NEAREST NEIGHBOR CLASSIFIER FOR TEXT CLASSIFICATION
Get PDFk - Nearest Neighbor Rule is a well-known technique for text classification. The reason behind this is its simplicity, effectiveness, easily modifiable. In this paper, we briefly discuss text classification, k-NN algorithm and analyse the sensitivity problem of k value. To overcome this problem, we introduced inverse cosine distance weighted voting function for text classification. Therefore, Accuracy of text classification is increased even if any large value for k is chosen, as compared to simple k Nearest Neighbor classifier. The proposed weighted function is proved as more effective when any application has large text dataset with some dominating categories, using experimental results
Performance Characteristics of an Four Stroke Compression Ignition Engine by Arranging Convergent Divergent Nozzle in the Intake Manifold
Get PDFGrowing demands on reduction of Internal Combustion Engine fuel consumption with increase of its performance new designs and optimization of existing ones are introduced. Air motion in CI Engine influences the atomization and distribution of fuel injected in the air charge. Better atomization of Injected fuel allows for a more complete burn and helps to reduce the engine Knock. A four stroke compression ignition engine with power 9 H.P and rated speed 1500 rpm is selected for the present work to investigate the performance characteristics. The swirl motion of the air is an important parameter in optimizing the performance of the engine. In order to increase the air velocity in the inlet manifold a convergent-divergent nozzle is used. The rise in velocity with the use of nozzle generates turbulence at the exit of the manifold which facilitates for better combustion of injected fuel. The Performance characteristics were calculated without nozzle and with out nozzle in the inlet manifold and compared
Energy Conservation in India: Challenges & Achievements
Get PDFThe gap between supply and demand of energy is continuously increasing despite huge outlay for energy sector since independence. Further the brining of fossil fuel is resulting in greenhouse gases which are detrimental to the environment. The gap between supply and demand of energy can be bridged with the help of energy conservation which may be considered as a new source of energy which is environment friendly. The energy conservation is cost effective with a short payback period and modest investment. There is a good scope of energy conservation in various sectors, viz industry agriculture, transport and domestic, This paper will give overview of energy conservation in Indian scenario
THERMOHYDRAULIC PERFORMANCE OF AN EQUILATERAL TRIANGULAR DUCT WITH ARTIFICIAL ROUGHNESS USED IN SOLAR AIR HEATER
Get PDFThe thermohydraulic performance of artificially roughened equilateral triangular solar air heater duct has been investigated and the comparision of the same has been presented with that of a conventional smooth solar air heater duct. The range of relative roughness height (e/Dh) is from 0.021 to 0.043, value of angle of attack (α) and relative roughness pitch (p/e) has been 30° and 8 respectively. The range of Reynolds number is from 5600 to 28000 and aspect ratio of the duct is 1.15. It has been found that the thermohydraulic performance of artificially roughened triangular solar air heater duct is always more than that of the smooth absorber plate in the range of Reynolds number investigated
COMPARISON OF VARIOUS NUMERICAL DIFFERENCING SCHEMES IN PREDICTING NON-NEWTONIAN TRANSITION FLOW THROUGH AN ECCENTRIC ANNULUS WITH INNER CYLINDER IN ROTATION
Get PDFFlow through annulus is a widely solved problem in fluid mechanics because of its practical applicability in many areas. In oil well drilling, cuttings generated are of non-Newtonian nature which flows through an eccentric annulus with inner cylinder in rotation, considering the real drilling situations. In the present work, a comparison have been done amongst three differencing schemes, the second order upwind, the Power law scheme and QUICK scheme used in computational fluid dynamics solution algorithms, so as to find the best amongst them to solve transition flow for this case as well as in general. A three dimensional orthogonal hexahedral mesh with suitable boundary conditions & input parameters was taken as computational domain for eccentric annulus. This was solved with standard k-ω turbulence model and SIMPLE algorithm. Results were validated against the published experimental work of J. M. Nouri, et. al [1]. Radial velocity, axial velocity and tangential velocity of fluid were plotted along chosen planes and contours of molecular viscosity as well as turbulence kinetic energy were observed for comparison amongst the solutions obtained by three differencing schemes. Although in most of the cases close agreement have been observed between computational data, but as far as prediction of radial velocity is concerned there was surprising difference amongst the three schemes
Partitional Clustering - An Iterative Algorithm
Get PDFCluster analysis is the term applied to a group of analyses that seek to divide a set of objects into a number of homogeneous groups or clusters, when there no a priori information about the group structure of the data. Clustering is an active research topic in data mining and different methods have been proposed in the literature. Most of these methods are based on the use of a distance measure defined either on numerical attributes or on categorical attributes. There are three basic categories of clustering methods: partitional methods, hierarchical methods and density-based methods. This paper proposes an iterative algorithm for partitional clustering
EYEGAZE COMMUNICATION SYSTEM
Get PDFThe Eyegaze System is a communication and control system for people with complex physical disabilities. You run the system with your eyes. By looking at control keys disabled on a screen, a person can synthesize speech, control his environment (lights, appliances, etc.), type, operate a telephone, run computer software, operate a computer mouse, and access the Internet and e-mail. Eyegaze Systems are being used to write books, attend school and enhance the quality of life of people with disabilities all over the world
IMPLEMENTATION OF SERVICE ORIENTED WEARABLE SYSTEM FOR PREVENTIVE HEALTHCARE
Get PDFas an emerging state-of-art technology, wearable systems have been applied to various real life situations and healthcare is one of such important areas. This study reports the implementation of a prototype Service Oriented Wearable System (SOWS). After detailed analysis of healthcare requirements, a system based on Service Oriented Architecture (SOA), wearable devices and sensor networks is implemented to provide continuous remote monitoring, diagnosis, immediate response and treatment for the purpose of preventive healthcare. Technologies based on SOA and sensor networks can support cost effective ubiquitous access to healthcare services, real time service provisioning and processing of heterogeneous data for various wearable devices such as ECG, accelerometer, SpO2 and location sensors. Wearable devices collect and transmit bio signal data to a wearable computer through IEEE/Wi-Fi network. Bio signal data is then uploaded to a Health Server PC (HS-PC) for analysis and storage where it will be accessed by doctors, paramedics or any other authorized personnel