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IJERD : Volume 6, Issue 9
K. Jayaprakash, A P Rekha, S Rajendiran
|Work Stress among Library professionals in General – A Study|
A study is conducted to identify the work stress among library professionals in general employed in various institutions in and around India. A questionnaire was distributed to the library professionals in general, which consists of demographic details, physical and psychological effects, causes, comfort strategy to adopt, and how they exposed, in their work place. It is found that the frequency of age group of respondents in respect of this research study is tabulated. Out of 19 respondents, the maximum number of respondents is pertaining to the age group in between 30-39 years by attaining the percentage of 52.63%. It is highlighted that 78.94% of respondents are Grade-I Librarians. This study highlights the result that maxim numbers of library professionals are experiencing the stress factor C, A, C, A, B. These factors are explained in this study.
Work stress - Work related stress - Causes of work Stress – Comfort Strategy for stress.
. Helge Hoel, Dieter Zapf, Cary L Cooper (2002), Workplace bullying and stress, in Pamela L. Perrewe, Daniel C. Ganster (ed.) Historical and Current Perspectives on Stress and Health (Research in Occupational Stress and Well-being, Volume 2), Emerald Group Publishing Limited, pp.293-333
M. Munawar Shees, A. F. Al-marshoud, M. S. Jamil Asghar
|Performance Improvement of Low Power Wind-Driven Wound Rotor Induction Generators with Combined Input Voltage and Slip Power Control|
Various techniques have been employed to optimize the performance of wound rotor induction generator (WRIG) based wind power generation systems. Input voltage control was used for the improvement of power factor in grid-connected induction generators. However, in this case, efficiency reduces drastically due to high output current. Moreover, the control range is limited. The conventional rotor resistance control had also been used for wind -driven WRIG. But, with this, the input power factor becomes very poor. In this paper, a new control method is proposed where both input voltage and slip power control are combined to achieve better performance. For each operating point an optimum input voltage is set and slip is controlled by rotor resistance such that the maximum efficiency is obtained. Moreover, both power factor and efficiency are improved for a wide range of speed variations. Also the reactive power demand is reduced throughout the range of effective speed which is compensated by optimum fixed capacitors. This scheme is useful for low power wind energy conversion system (WECS) where wind speed varies over wide range. Simulation model for the proposed schemes are developed using MATLAB and the performance of the induction generator under various wind conditions are studied with this model. Also the performance characteristics of the proposed schemes are experimentally verified. The proposed control schemes are simple as well as cheap.
Combined input voltage and slip power control, Wound Rotor Induction generator (WRIG), MATLAB, Slip power control, Renewable energy sources (RES), Wind energy conversion system (WECS).
 S. Engelhardt, I. Erlich, C. Feltes, J. Kretschmann, and F. Shewarega, "Reactive power capability of wind turbines based on doubly fed induction generators," IEEE Trans. on Energy conversion, Vol. 26, No. 1, pp. 364-372, May 2011.  E. A. DeMeo, "20% electricity from wind power: An overview," IEEE Power Energy Soc. General Meeting-Convers. Del. Electr. Energy 21st Century, Pittsburgh, USA, pp. 1-3, 20-24 July, 2008.  V. Subbiah, and K. Geetha, "Certain investigations on a grid connected induction generator with voltage control," IEEE International Conference on Power Electronics, Drives and Energy Systems, New Delhi, India, pp. 439–444, 8-11 Jan., 1996.  B. Singh, "Induction generators – a prospective," Electric Machines and Power Systems, Taylor & Francis, Vol. 23, pp. 163-177, 1993.  W. E. Leithead and B. Connor, "Control of a variable speed wind turbine with induction generator," Control‟94,21-24 March 1994, pp. 1215-17.....
Wauton I., Gumus R.H.
|Effect of Bio-Augumentation on Biokinetic Parameters in the Mesophillic Anaerobic Digestion of Poultry Droppings|
The effect of bio-augumentation on biokinetics parameters in the mesophillic anaerobic digestion of poultry droppings was carried out. The parameters investigated include: the maximum specific growth rate, yield, COD removal efficiency, decay coefficient and the growth phases. It was observed that inoculation positively affect the lag phase, exponential growth phases, yield, specific growth rate and COD removal efficiency. This was achieved by integrated recycle of digested sludge into the reactor, whose value depended on the biomass yield, for the recycle stream to serve as inoculum.
Mesophillic Anaerobic digestion, biokinetic parameters, Inoculum, Poultry dropping.
. Bailey, J.E. and Ollis, D.F. (1986) ,Biochemical Engineering Fundamentals, McGraw-Hill, New
V.Supraja, S.Safiya, T.Kishore
|Comparative Logic Styles In Design Of Adder Using VLSI|
The main consideration for design and implementation a doubly-fed induction generator (DFIG) applied to wind power generation driven by wind turbine is under study for low voltage ride-through application during system unbalance. An improved control and operation of DFIG system under unbalanced grid voltage conditions by coordinating the control of both the rotor side converter (RSC) and the grid side converter (GSC) is done in this thesis. Simulation and analysis of DFIG system with wind turbine using Fuzzy logic controller for RSC and GSC under unbalanced condition is presented in the positive synchronous reference frame The steady-state operation of the DFIG and its dynamic response to voltage sag resulting from a remote fault on the 120-kV system is shown in this thesis using controllers. Modeling of DFIG system under Fuzzy logic controller to control voltage and active-reactive powers is done using MATLAB/SIMULINK.
Converter, doubly fed induction generators (DFIGs), proportional integral (PI) plus resonant (R; PI–R), voltage unbalance, wind energy.
. Reto Zimmermann and Wolfgang Fichtner " Low-Power Logic Styles:CMOS versus Pass Transistor Logic"IEEE journal of Solid-State Circuits, Vol.32, No.7, April 1997,pp.1079-1090.
. D. Markovi, B. Nikoli and V.G. Oklobdzija "A general method in synthesis of pass-transistor circuits" Microelectronics Journal 31, 2000, pp.991-998.
. Fang-shi Lai and Wei Hwang, "Design and Implementation of Differential Cascade Voltage Switch with Pass-Gate (DCVSPG) Logic for High-Performance Digital Systems" IEEE Journal of Solid-State Circuits, Vol.32, No.4, (April 1997),pp.563-573.
. "A Carry Skip Adder with Logic Level", by Kim, Kwang Yoal, University of Rostock Electrical Engineering and Information Technology, Germany.
. Anantha P. Chandrakasan, Robert W. Brodersen, "Low Power Digital CMOS Design" Kluwer Academic Publishers, 1995...
Lokendra Yadav Shine Augustine
|An Improved Implementation for Brain Tumor Detection on CT scanImages|
A "managed care model" has been realized to permit both a continuous patient check without hospitalization. Here the main focus is on designing hardware and software architecture for people who stay alone at home and suffering from heart diseases and developing a hardware which will sense the heart rate and temperature of the patient. These ECG and temperature has been automatically processed by "LAB VIEW" through a multi parametric approach based on time & frequency domain study. Advanced characteristics have been utilised by this monitoring prototype and different technologies such as data acquisition, elaboration, and online transmission have been integrated knowledge management. In this way it is possible not only data real time visualization and collection but also Continuous patient management useful to improve patient life quality.
ECG, Lab view mail, Patient Monitoring Signal processing, Temperature.
. F Braga, C Forlani, MG Signorini, "A Knowledge Based Home Monitoring System for Management and Rehabilitation of Cardiovascular Patients", Computer in Cardiology, IEEE ; 32:41-44
|D.Nandhini, Kalpana.G, Abhilash.R|
|Browser Authentication and Inline Code Analyzer with Common Centralized Browser Security Violation Report Management System for Mitigating Web Attacks|
Description of a new space geometry that allows explaining the existence of all stable physically scatterable particles solely from Maxwell's electromagnetic theory. This expanded space geometry leads to an electromagnetic mechanics of particles involving a seamless series of clearly defined interaction sequences providing an uninterrupted path of causality from 1) the unquantized quantities of unidirectional kinetic energy induced in particles by natural acceleration through Coulomb or gravitational interaction, 2) to the quantization in the form of free-moving electromagnetic photons of any quantity of this energy in excess of the quantity allowed by the local stable or metastable electromagnetic equilibrium, 3) to the creation of electron-positron pairs from the destabilization of photons of energy 1.022 MeV or more, 4) to the creation of protons and neutrons from the interaction of electrons and positrons forced into groups of three including both types in sufficiently small volumes of space with insufficient energy to escape mutual capture, 5) to the final shedding in the form of neutrino energy of momentary metastable excess rest mass (different from velocity induced extra momentary relativistic mass) as newly created overexcited massive elementary particles are forced by local electromagnetic equilibrium into lowering their mass to their lower and stable true rest mass.
Maxwell theory, Maxwell equations, electromagnetic theory, scatterable particles, kinetic energy, causality, acceleration, electron-positron pairs, 1.022 MeV, neutrino, photon LC equation, 3-spaces.
. André Michaud. Field Equations for Localized Individual Photons and Relativistic Field Equations for Localized Moving Massive Particles, International IFNA-ANS Journal, No. 2 (28), Vol. 13, 2007, p. 123-140, Kazan State University, Kazan, Russia. (Also available at http://www.gsjournal.net/Science-Journals/Essays/View/2257).
|Abhilash R, Saravanan E,Kalpana G|
|Robust Encryption and Decryption (RED) Component and Standard Encrypt Syntax (SES) For Web Services Security Architecture|
With changes in technological landscape the threats and vulnerabilities in network are rising at an alarming rate. There are many complexities specific to, and inherent in Web services that further complicate their security. Numerous threats can compromise the confidentiality, integrity, or availability of a Web service or the back-end systems that a Web service might expose. This paper discusses re-modeling web services security architecture from security attacks such as network security attacks, E-Commerce attacks and man in the middle attacks. A detailed conceptual framework is proposed, based on how safely to send valuable packets to the destination without any security attacks. This framework is based on providing a Robust Encryption and Decryption (RED) technique for web browser and the web server and Standard Encrypt Syntax (SES) to web application.
Web Security, Threats and Vulnerabilities in web, Cryptography, Web Security Architecture.
 V. Shoup, "A proposal for an ISO standard for public key encryption", http://eprint.iacr.org/2001/112, 2001.
|Fatima Sidki, Ilias Mouallif, Abdelhamid El Amri, Mustapha Boudlal, Abdelkader Benali|
|Experimental Study of Mechanical Behavior and Microstructural Benchmarking Between the Rail and The Thermite Weld|
The kingdom of Morocco has become the first African country to adopt a high-tech rail infrastructure, for the mega (giant) project "Morocco High Speed Train" (TGVM). Reducing the noise levels of rail traffic is an extremely important issue for the environment and for rolling stock as well. Therefore, research and development in this field in Morocco is very important. The elimination of rail joints is a crucial factor in the reduction of rail noise. The junctions of rails in the railways should be designed in a way to obtain a great continuity of the raceway. Currently, the rails connections are made by two methods: (1- Resistance welding) and (2- aluminothermic welding). The second method is considered the most reliable in Morocco's railways. For this purpose, this paper aims to present a set of experimental studies of mechanical behaviour, where various samples are recorded from base metal zones and areas of thermite weld. These samples are taken from broken rails that have been used in service. After the benchmarking a microstructural differences have been identified by the optical microscope and the scanning electron microscope between the area of the base metal and the rail thermite weld.
Rail, thermite weld, mechanical behavior, microstructure, base metal, melted zone.
. Myers, J., Geiger, G. H., and Poirier, D. R., "Structure and Properties of Thermite Welds" Welding Journal Research Supplement, Vol. 61, August, 1982, pp. 258s-268s.
|Gumus R. H., Wauton I, Osaro H|
|Simulation Model for Biodiesel Production using Plug Flow reactor: Non Isothermal Operation|
A mathematical model capable to predict the dynamic behavior of Non Isothermal tubular (plug) flow reactor on transesterification of sun flower oil has been developed. The model was simulated using the k values obtained from literature and temperatures of 25o C , 40o C and 60oC with varying feed ratios of 3:1, 6:1 and 9:1 respectively. The simulated results showed the effect of temperature and feed ratio on conversion and yield of biodiesel. The highest conversion was observed at 60oC while that of yield was at 40oC. A conversion of 90 % was achieved with a reactor volume of 487.7 liters.
Modeling, Plug flow Reactor, Trans esterification, Vegetable oil, Biodiesel production.
 Bambase, M.E. , Nakomura N., Tanaka, J Matsumum M., (2007) Kinetic of hydroxide –Catalyzed
methnolysis of crude sun flower oil for production of fuel grade methyl ester .J Chem Bio Technology
82 (3) pp 275-280.
|FFT on ARM-Based Low-Power Microcontrollers|
This article discusses the processing of signals using fast Fourier transformation in low-power microcontrollers based on the ARM core. Simple microcontrollers do not support floating point numbers so fixed point data types must be used. Two ways of calculating FFT are analyzed: CMSIS library and special algorithm optimized for use on ARM processors (FFT-ARM). Both methods utilize a radix-4 decimation in frequency (DIF) algorithms. The radix-4 algorithm limits the length of signals that can be used. This limit can be overcome by signal resampling using linear interpolation. The performance of both algorithms is tested on the STM32F100 microcontroller.
FFT, low-power microcontroller, fixed-point numbers, ARM core.
. J. Micek, M. Hyben, M. Fratrik, J. Puchyova, "Voice Command Recognition in Multirobot Systems: Information Fusion", International Journal of Advanced Robotic Systems, Vol. 9, 181:2012