| Title | A NUMERICAL APPROACH ON LOAD SHARING ANALYSIS AND OPTIMIZATION OF BOLTED JOINT EFFICIENCY |
| Authors | G.S.Shivashankar,S.Vijayarangan |
| Category | Physics, Astronomy |
| Abstract | The major design issue remains in progressing from the “coupon” strengths measured in these tests to bolted joints in different applications. A numerical method is used for the approximate determination of a multiple “bolted” joints loaded in tension and C code is developed for the same. Comparing with experimental results show that the method can be used as a first approximation for design purposes. In this failure analysis shearing effect, bending effect and bearing effect were considered. Effects of width/diameter ratio (w/d) and edge/diameter ratio (e/d) on failure load were estimated numerically and experimentally on A and C type joints of glass-fiber/epoxy composite laminates. The different stages of an analysis from plain hole to multi-row bolted joints consisting of ... |
| Issue | 15 |
| Date_posted | 7/2/2005 |
| URL (full text) | http://www.acadjournal.com/2005/v15/part5/p1/ |
| email | gsshivashankar@rediffmail.com |
| Address | Mechanical Engineering Department, PSG College of Technology, Coimbatore |
| |
| Title | Optimum Reactive Power Dispatch Using Genetic Algorithm |
| Authors | P.Subburaj, N.Sudha, K.Rajeswari, Dr.K.Ramar and Dr.L.Ganesan |
| Category | IT and Computing |
| Abstract | Reactive Power Dispatch (RPD) is one of the important tasks in the operation and control of the power system. RPD problem can be formulated as a non-linear constrained optimization problem. This paper presents a Genetic Algorithm (GA) approach for solving the reactive power dispatch problem including the line flow constraint. Minimizations of real power loss with FACTS and without FACTS devices are the objectives of this reactive power optimization problem. The proposed algorithm has been applied to find the optimal reactive power control variables in IEEE 30 and IEEE 118-bus systems. The simulation results are promising and show the effectiveness and robustness of the proposed approach. |
| Issue | 21 |
| Date_posted | 7/27/2007 |
| URL (full text) | http://www.acadjournal.com/2007/V21/part6/p6/ |
| email | subbunec@yahoo.com |
| Address | Dept Of Electrical Engg
National Engg College |
| |
| Title | TEMPERATURE IMPACT ON THE DEFORMATION OF ROOTS HAIRS with Rhizobium - INOCULATED PEA (Pisum sativum L.) SEEDLINGS |
| Authors | Lyudmila E. Makarova, Vadim N. Nurminsky |
| Category | Chemistry |
| Abstract | Using light microscopy methods we monitored the response of root hairs (deformations) in pea (Pisum sativum L.) seedlings grown at 22 and 8 ?Ń, 24 hours after inoculation by the bacteria Rhizobium leguminosarum bv. viceae. There were noticed differences between the roots grown at different temperatures – they manifested different deformation degree (twists, bends, etc.). It was suggested that inhibition of pea roots infection by nodular bacteria at lower temperature was caused by the slowed down of growth of both the root itself and root hairs, as well as decelerated increase of root hairs zones. |
| Issue | 15 |
| Date_posted | 7/15/2005 |
| URL (full text) | http://www.acadjournal.com/2005/v15/part2/p1/ |
| email | makarova@sifibr.irk.ru |
| Address | Siberian Institute of Plant Physiology and Biochemistry, Siberian Division of the Russian Academy of Sciences,
664033 Irkutsk, Russia, |
| |
| Title | A contribution to the study of thermoelectrical cooling |
| Authors | Beguide Bonoma, Marc Tchetchoua, Sylvain Tchatchueng |
| Category | Physics, Astronomy |
| Abstract | In this work the expression of the performance coefficient of Peltier’s thermo electrical refrigeration is established. The examination of its optimisation is conducted according to its different parameters. |
| Issue | 20 |
| Date_posted | 5/31/2007 |
| URL (full text) | http://www.acadjournal.com/2007/V20/part5/p2/ |
| email | beguide_ed@yahoo.fr |
| Address | Applied physics laboratory of the National Higher Teacher’s Training College, BP 47 Yaounde, University of Yaounde I. |
| |
| Title | A FRAMEWORK FOR MINIMIZING LATENCY IN CDN USING URL REQUEST ROUTING APPROACH |
| Authors | S.Manikandan, A.Chitra and P.Venketesh |
| Category | IT and Computing |
| Abstract | Increase of web data in recent years is a crisis for distributing and managing the content
of a websites. Content Distribution Network (CDN) serves to provide some special solution to
these issues. Content Distribution Network maintains large number of replicas to act on behalf of
origin servers. The main issues in designing Content Distribution Network are Request routing,
Object replication, replication consistency and Server Distribution. Request routing is a familiar
technique to progress the accessibility of web sites. It normally minimizes the client latency and
increases content availability. This paper presents an exploration on different Request routing
approaches and proposes a framework to minimize client latency using URL based request
routing method. |
| Issue | 16 |
| Date_posted | 12/20/2005 |
| URL (full text) | http://www.acadjournal.com/2005/v16/part6/p2/framework_CDN.pdf |
| email | manigandan_me@yahoo.co.in |
| Address | Dept of Computer Science and Engg, PSG College of Technology, Coimbatore -641004, India. |
| |
| Title | A FUZZY BASED FAULT DETECTION SCHEME FOR SYNCHRONOUS GENERATOR |
| Authors | V. Duraisamy, N. Devarajan, P.S.Vinoth Kumar, S.N.Sivanandam,D.Somasundareswari |
| Category | Electronics, Electrotechnics |
| Abstract | A fuzzy system based inter-turn fault detection scheme for synchronous generator is proposed. The negative sequence components of voltages and currents are used as fault indicators for inter-turn fault detection. The laboratory synchronous generator is used as a test machine to obtain the training data for fuzzy fault detector. The negative sequence voltage and current are obtained from the line voltages and currents and used as inputs for fuzzy fault detector (FFD). The effectiveness of fuzzy fault detector has been analyzed through simulation studies with triangular, trapezoidal and Gaussian membership functions and results are compared. It is observed from the results that the performance of FFD with triangular membership function is better than trapezoidal and Gaussian membership functions. |
| Issue | 14 |
| Date_posted | 3/6/2005 |
| URL (full text) | http://www.acadjournal.com/2005/V14/part1/p1/ |
| email | vduraisamy@yahoo.com |
| Address | Department of Electrical and Electronics Engineering,
Kumaraguru College of Technology, Coimbatore - 641 006,India. |
| |
| Title | A Genetic Model for Interference Suppression in DS-CDMA Systems
And Performance Comparison with Neural Network Receiver |
| Authors | B.Sivakumar S.Krishnan Dr.S.Subha Rani |
| Category | IT and Computing |
| Abstract | We present in this paper a new multi-user receiver using a Genetic Algorithm (GA) based decision scheme for interference suppression in Direct Sequence Code Division Multiple Access Wireless Systems (DS-CDMA). In this work a hybrid approach that employs a GA and Multi-user Detector for the multi-user detection (MUD) problems in CDMA/WCDMA cellular systems is investigated. The proposed GA approach with MUD performs well in the presence of Multiple Access Interference (MAI) under CDMA/WCDMA standard conditions. Cancellation of MAI is the prime concern in our work since it improves the performance of the system with increasing number of users. This paper also compares the performances of MUD using Neural Networks and GA with the standard optimum receiver which is a benchmark for synchronous CDMA systems. Simulation results for these above methods are provided to show that the approach is promising and encouraging. A comparative performance analysis of the four receivers, i.e. conventional, optimum, neural network, and genetic algorithm is carried out by simulations. In all examples considered, the proposed genetic receiver outperforms the neural network receiver. |
| Issue | 13 |
| Date_posted | 11/6/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V13/Part6/p1/ |
| email | sivabs2000@yahoo.co.uk |
| Address | Dept. of Electronics & Communication Engineering,
PSG College of Technology, Peelamedu, Coimbatore-641004, India |
| |
| Title | A New and Novel Image Compression Algorithm Using Wavelet Footprints |
| Authors | N. Malmurugan, A. Shanmugam, S. Jayaraman and V. V. Dinesh Chander |
| Category | IT and Computing |
| Abstract | Wavelet footprint is a new technique that gives parsimonious representation of piecewise polynomial signals. Using wavelet footprints we will able to exploit the inter-dependency of wavelet coefficients across the scales around singularity locations in a signal. In this paper, it is reported that wavelet footprints can be used to represent images as well. We show that the images represented using footprints require fewer coefficients, but still maintains the quality of the image and thus provides a way for compression. The degree of the polynomial and inter-pixel value difference threshold can be selected for possible better minimal representation. |
| Issue | 14 |
| Date_posted | 3/6/2005 |
| URL (full text) | http://www.acadjournal.com/2005/V14/part6/p1/ |
| email | malmurugan@ece.psgtech.ac.in |
| Address | Department of Electronics & Communication Engg.,
PSG College of Technology, Peelamedu,
Coimbatore – 641 004. India |
| |
| Title | A New design and Performance evaluation of Congestion Based Dynamic TCP Send Buffer Allocation |
| Authors | Ramachandra V. Pujeri, S. N. Sivanandam |
| Category | IT and Computing |
| Abstract | The network has grown in to a powerful tool in the recent past. The good utilization of resources can cause an immense change in server’s performance. One such valuable resource, which should be optimized, is the TCP Send Buffer[4]. Conventional methods of allocating send buffer waste a lot of server resources and are also inefficient, as they do not consider certain important factors which affect the utilization of the network. The CBD or Congestion Based Dynamic algorithm[5] proposed here tries to achieve an efficient use of the send buffer. It takes into account the important parameters of the transmission such as RTT send rate, maximum buffer size on the receiver’s side. In this algorithm, we set a functional value for each request and the buffer is allocated proportionately. To accomplish this we divide the send buffer space of the server into two segments. The Experimental Segment allocates send buffer for the new entrants temporarily and some time later the request will be swapped to the Processing Segment. This algorithm is capable of handling critical conditions such as congestion, ill-behaved clients since this algorithm is based on the function, which allows congestion control through a passive system such as a send buffer. |
| Issue | 13 |
| Date_posted | 11/6/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V13/Part6/p10/ |
| email | sriramu_vp@yahoo.com |
| Address | Department of Computer Science and Engineering
PSG College of Technology, Coimbatore-641 004, India. |
| |
| Title | A Novel approach for Implementing Security services |
| Authors | Dr. S. N. Sivanandam, G.R.Karpagam |
| Category | IT and Computing |
| Abstract | To share information in the distributed systems environment, it is necessary to have a secured computing environment. Traditional software Engineering approach has not been successful in the security service development, because of the platform dependency and frequent change in security requirements. Model based software development addresses the problems faced with frequent changes. Model Driven Architectural approach (MDA) helps in achieving platform independence and supports interoperability. In this paper, Meta models are developed for implementing security services in Distributed systems using Generic Modeling Environment. An interpreter is developed to transform independent models to specific and vice versa, thereby achieving round trip engineering. This work helps in developing MDA Components for Security services in new and legacy systems |
| Issue | 13 |
| Date_posted | 11/6/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V13/Part6/p6/ |
| email | |
| Address | Dept of Computer Science and Engg PSG College of Technology, India |
| |
| Title | A NOVEL ARCHITECTURE FOR INDUCTION MOTOR
PERFORMANCE ENHANCEMENT USING VHDL |
| Authors | B. Hariram Selvamurugan Satheesh, Dr. N. S. Marimuthu, S. Jeevananthan |
| Category | Electronics, Electrotechnics |
| Abstract | Induction motors offer a low cost variable speed solution for many motor control applications. Normally in most of the commercial applications the motor is likely to be operated in the partially loaded condition for considerable duration, which results in poor efficiency. For any IM, there will be a unique value of supply voltage for a specific percentage of loading that will give optimum efficiency and hence, the motors may be operated in energy efficient mode for any percentage of loading. In this paper, a controller has been proposed that would produce PWM signals for the inverter to set the optimum voltage to the IM during partially loaded conditions. Since the iron loss is directly proportional to the applied voltage, it gets reduced when the applied voltage is reduced to an optimum value and hence the efficiency of the IM will be increased. This paper presents a general methodology for design and simulation of FPGA controller using hardware description languages. The language used is VHDL. In addition to the energy efficient operation, the proposed FPGA controller also supports few speed control methods of IM. The designed controller is very simple and no such motor control microprocessor is available in the market with above explained features. |
| Issue | 14 |
| Date_posted | 3/6/2005 |
| URL (full text) | http://www.acadjournal.com/2005/V14/part1/p3/ |
| email | bhariram@rediffmail.com |
| Address | Department of Electrical and Electronics Engineering
Government College of Technology, Coimbatore- 641 013 INDIA, Department of Electrical and Electronics Engineering
Government College of Engineering
Tirunelveli – 7 |
| |
| Title | A NOVEL ARCHITECTURE FOR VLIW PROCESSOR |
| Authors | R. SESHASAYANAN and DR.S.K.SRIVATSA |
| Category | IT and Computing |
| Abstract | Technology has seen the development of processor industry right from micro to the latest Nanotechnology with speed being important criteria. Not much attention has been given to the power required to drive these Integrated Circuits. With gaining popularity in mobile computing, developing mobile processors have gained popularity since these processors possess unique properties like low power
consumption and dissipation. This paper aims at designing a low power Very Long Instruction Word
(VLIW) processor with built in FFT processor, which uses single clock frequency. This VLIW processor is
designed with two modules one for VLIW processor and the other one is Hybrid dynamic voltage scaling module. Using the DVS algorithm the power can be reduced up to 20 to 25 % of normal VLIW processor.
The design is simulated and synthesized using Xilinx project Navigator and the report is given in the paper. |
| Issue | 21 |
| Date_posted | 7/27/2007 |
| URL (full text) | http://www.acadjournal.com/2007/V21/part6/p8/novel.pdf |
| email | se_sha_sa@yahoo.com |
| Address | Anna University, Chennai – 600 025 |
| |
| Title | A novel FPGA architecture for a reconfigurable Alu |
| Authors | P.Karthigaikumar |
| Category | IT and Computing |
| Abstract | No particular application is well supported by a conventional microprocessor, which has a predetermined set of functional units. This is particularly true in highly dynamic areas, such as multimedia, communications and other embedded system. We suggest a hardware, which can be dynamically configured to support any applications. By combining a conventional microprocessor and field programmable gate array (FPGA) reconfigurable logic on one chip, commodity pricing is maintained and yet the same work can effectively support a wide range of applications. The term reconfigurable can be associated with several aspects in the realm of processors. In our proposal, we prefer to use the term reconfigurable as the processor that can be reconfigured for specific applications within a very short time frame using the available modules. In this paper we propose reconfigurable field programmable gate array (FPGA) architecture with a C-based design flow that has the ability to perform computations in hardware coupled with the flexibility of software to increase performance and speed. The architecture exploits the advantages of both parallel and pipelined processing. The dynamically reconfigurable technology involves Multi-Function Processing and Time-Sliced Processing. |
| Issue | 19 |
| Date_posted | 12/21/2006 |
| URL (full text) | http://www.acadjournal.com/2006/v19/part6/p6/ |
| email | Karthi_kumar_p@rediffmail.com |
| Address | Karunya Institute of Technology and Sciences, Coimbatore –641 114. Tamil Nadu, INDIA |
| |
| Title | A Novel Image Compression Algorithm using Ridgelet Transformation with Modified SPIHT |
| Authors | N. Malmurugan,
A. Shanmugam,
S. Jayaraman,
A.R. Abdul Rajak |
| Category | IT and Computing |
| Abstract | An effective image coding technique which involves transforming the image into another domain with Ridgelet function and then quantizing the coefficients with modified SPIHT has been presented in this paper. Ridge functions are effective in representing functions that have discontinuities along straight lines. Normal Wavelet transforms fail to represent such functions effectively. SPIHT has been defined for normal wavelet decomposed images as an embedded quantization process. If the coefficients obtained from Ridgelet transform of the image with more discontinuities along straight lines have to subject to quantization process with SPIHT, the existing structure of the SPIHT should be modified to suit with the output of the Finite Ridgelet Transform (FRIT) . In this paper, a modified SPIHT algorithm for FRIT coefficients has been proposed. The results obtained from the combination of FRIT with modified SPIHT found much better than that obtained from the combination of Wavelet Transform with SPIHT. |
| Issue | 13 |
| Date_posted | 11/6/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V13/Part6/p2/ |
| email | n_malan@mail.com |
| Address | Department of Electronics and Communication Engineering
PSG College of Technology, Coimbatore – 641 004, India, Bannariamman Institute of Technology, Sathyamanagalam – 638 401, India |
| |
| Title | A Novel Pole-Placement Controller Design for a Robot |
| Authors | I.Hassanzadeh and S.Mobayen |
| Category | IT and Computing |
| Abstract | This research presents a pole-placement method for designing of a feedback controller for a robot. The idea of proposed method is derived from the fact that the internal signals of a feedback control system can be eliminated by executing row operations. The design method can be implemented easily and insightfully on Diophantine equations after choosing proper closed-loop poles. In this paper, a 5-bar-linkage manipulator is considered as a case study and the controller has been designed based on the governing Euler-Lagrange equations on the robot. The superior features of this method are its simplicity and flexibility to apply on various control systems. |
| Issue | 23 |
| Date_posted | 5/31/2008 |
| URL (full text) | http://www.acadjournal.com/2008/v23/part6/p5/ |
| email | Izadeh@tabrizu.ac.ir |
| Address | Control Engineering Department, Faculty of Electrical & Computer Engineering,
University of Tabriz, Tabriz, Iran |
| |
| Title | A Novel Steganography Scheme for RGB images with high image quality and Data hiding capacity |
| Authors | UMAMAHESWARI, MANOJ KUMAR, A.SHANMUGAM |
| Category | IT and Computing |
| Abstract | This paper presents a novel steganography scheme capable of concealing a piece of critical information in a host image that is a RGB image. The critical information is enciphered with the help of separate public key. This enciphered critical information is then embedded into the image blocks. A binary key matrix and a weight matrix are used as secret keys to protect the hidden information. Given a host image of size m x n, the proposed scheme can hide as many … |
| Issue | 12 |
| Date_posted | 6/28/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V12/Part5/p2/ |
| email | gumabhaskar@yahoo.co.in |
| Address | Department of Electronics and communication Engineering
PSG College of Technology, Coimbatore, INDIA |
| |
| Title | A PREDICTION OF THE THERMAL CONDUCTIVITY OF SAPELLI |
| Authors | Joseph Albert Mukam Fotsing, Mbatene Takam |
| Category | Civil Engineering |
| Abstract | The measurement of the thermal conductivity of Sapelli is carried out. A comparison of the experimental and theoretical results is made from some calculation models available in the literature. Equations predicting the thermal conductivity according to the moisture content are proposed in the longitudinal, radial, and tangential directions. |
| Issue | 11 |
| Date_posted | 2/14/2004 |
| URL (full text) | http://www.acadjournal.com/2004/v11/Part7/p3/index.htm |
| email | mukam_fotsing_j_a@fulbrightweb.org |
| Address | University of Yaounde I
Ecole Normale Supérieure
P. O. Box 3482
Yaounde CAMEROON |
| |
| Title | A REVIEW OF CONSISTENCY MECHANISMS FOR QoS AWARE CONTENT DISTRIBUTION NETWORKS |
| Authors | P.Venkatesh, S.N.Sivanandam, R.Venkatesan |
| Category | IT and Computing |
| Abstract | The World Wide Web and Internet has witnessed enormous growth for more than a decade and it has been used to serve users with vast amount of information stored at geographically distributed sites. To alleviate the burden of increasing load on the network infrastructure and on web servers, caching has been considered a viable option. The key problem with caching is providing cache consistency. Content Distribution Network (CDN) is a shared network of servers or caches that deliver content to users on behalf of content providers. In this paper we examine various strategies that have been used to provide cache consistency in CDN for improved performance. |
| Issue | 14 |
| Date_posted | 3/26/2005 |
| URL (full text) | http://www.acadjournal.com/2005/v14/part6/p8/ |
| email | venkateshp@cse.psgtech.ac.in |
| Address | Department of Computer Science and Engineering,
PSG College of Technology, Coimbatore, India |
| |
| Title | A SELECTIVE SURVEY ON MULTIUSER DETECTION TECHNIQUES IN CDMA SYSTEMS |
| Authors | A. Rajeswari, Dr.K.Gunavathi, Dr. A. Shanmugam |
| Category | IT and Computing |
| Abstract | ue to the demand for cellular wireless services, recent interests are in techniques, which can improve the capacity of CDMA systems. One such technique is multiuser detection. The purpose of this article is to present a selected survey of the published literature in the area of multiuser detection techniques. The topics include discussion on multiple access interference cancellation techniques both linear and nonlinear. Also a very brief note on complexity of the multiuser detectors is also presented. |
| Issue | 13 |
| Date_posted | 11/6/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V13/Part6/p8/ |
| email | |
| Address | Electronics and Communication Engineering Department, Coimbatore Institute of Technology, Coimbatore,India, Electronics and Communication Engineering Department,
PSG College of Technology, Coimbatore, India, Electronics and Communication Engineering Department, Bannari Amman Institute of Technology, Coimbatore, India |
| |
| Title | A Simple Algorithm for Minimal Search Data Index: Active Partitioned Data Search Using PVM - Algorithm that battles with delay |
| Authors | N. Rajkumar, Dr.S.N. Sivanandam, |
| Category | IT and Computing |
| Abstract | In this paper, we examine the issue of mining association rules among items of a large database of search engines. The mining of association rules can be mapped into the problem of discovering large item sets where a large item set is a group of items which appear in a sufficient number of transactions. The problem of discovering large itemsets can be solved by constructing an index set of itemsets first and then, identifying, within the subdivided set. Generally this is done iteratively for each large Lk itemsets are equally partitioned into Sk subsets. To determine the related data of a searching text each index itemset contains the two candidate keys. One is moral text and another one is key that indicates the subset name where the data is originally located… |
| Issue | 12 |
| Date_posted | 6/28/2004 |
| URL (full text) | http://www.acadjournal.com/2004/V12/Part5/p3/ |
| email | rnalliah@Yahoo.co.in |
| Address | Dept. of Computer Science & engineering
PSG College of Technology
Coimbatore – 641 004, India |
|
Previous
[ 1 ]
Next
|
