020720   Senthil Kumar M;Vijayarangan S (Mechanical Eng Dep, PSG Coll of Technol, Coimbatore-641 004, Email: msenthil_kumar@hotmail.com]) : Static analysis and fatigue life prediction of steel and composite leaf spring for light passenger vehicles. J scient ind Res 2007, 66(2), 128-34.

Static and fatigue analysis of steel leaf spring and composite multi leaf spring made of glass fibre reinforced polymer Primary objective is to compare the load carrying capacity, stiffness and weight savings of composite leaf spring with that of steel leaf spring. The design constraints are stresses and deflections. Finite element analysis with full bump load on 3-D model of composite multi leaf spring was done using ANSYS 7.1 and analytical results were compared with experimental results. Composite leaf spring had 67.35% lesser stress, 64.95% higher stiffness and 126.98% higher natural frequency than that of existing steel leaf spring. A weight reduction of 68.15% was also achieved by using composite leaf spring. Fatigue life of composite leaf spring (10, 00,000 cycles) was more than that of conventional steel leaf spring (2, 00,000 cycles).

7 illus, 2 tables, 18 ref

020719   Saydut A;Tonbul Y;Baysal A;Zahir Duz M; Hamamci C (Engineering and Architecture Faculty, Mining Engng Dept, Dicle Univ, TR-21280 Diyarbakir, turkey, Email: saydut@dicle.edu.tr) : Forth flotation pretreatment for enhancing desulfurization of coal with sodium hydroxide. J scient ind Res 2007, 66(1), 72-4.

Froth flotation (FF) pretreatment of coal from Hazro, Turkey, for enhancing desulfurization with sodium hydroxide was investigated. FF reduced following contents of coal: ash, 58.54; pyritic sulfur. 79.34; and volatile matter. 56.98%. The coal notation was 69.59%. FF could not remove organic sulfur. Coal concentration obtained from notation was leached using aqueous NaOH and its organic sulfur content was reduced by 59.27%. Hence using combination of two methods. total sulfur. ash and volatile mailer contents was reduced by 88.06%. 63.13% and 77.32%. respectively.

1 table, 20 ref

020718   Santi Prabha I;Pratap Reddy I;Satyanarayana C (ECE Dep, JNTU College of Engineering, Kakinada-533 003, Email: santiprabha@yahoo.com) : Analysis of CIS processor design parameters in cochlear implant devices. Int J Syst Cybernetics Inf 2006, (Apr), 40-3.

Restoration of normal hearing of permanently deaf persons is an active research area. Deafness is due to loss of hair cells attached to the basilar membrane in Cochlea. It can be overcome through cochlear implant that bypasses the normal hearing mechanism and electrically stimulating the auditory neurons directly. Signal processor is an important component of Cochlear implant device, which is responsible in delivering the speech information to the electrodes of implant device. Multi-channel implants provide both temporal-amplitude and spectral representation of auditory event by using distributed array of electrodes to selectively stimulate discrete populations of spiral ganglion cells at multiple sites in the cochlea. Analog and pulsatile are the two basic types of stimulation techniques. This paper deals with the performance analysis of Continuous Interleaved Sampling processor using pulsatile stimulation.

6 illus, 2 tables, 10 ref

020717   Sangeetha P (Mechanical Engng Dep, SCSVMV (Deemed University), Enathur, Kancheepuram-631 561) : Analysis of FRP wrapped concrete coumns under uniaxial compression. J scient ind Res 2007, 66(3), 235-42.

Fiber wrapping or encasement of columns with fiber-reinforced plastic (FRP) sheets significantly enhances strength and ductility of concrete columns. To investigate the behavior of concrete columns confined by fiber reinforced polymer (FRP) sheets under uniaxial compression, analytical models were solved using Finite Element Method (FEM) against published experimental data. Cross sections of concrete columns in the analysis are categorized into circular, square and rectangular sections. Finite Element Analysis (FEA) can effectively simulate the behavior of concrete columns confined by FRP sheets when the proper numerical model is adopted. Results from a series of the analysis on small-scale specimens showed that confinement increased strength (20-25%) and ductility of concrete columns loaded axially. ANSYS (version 6.0) offers a series of very robust nonlinear capabilities for designs and analyses.

10 illus, 5 tables, 9 ref

020716   Sane S S;Ghatol A A (Computer Engg. Dep, K K W I E E R, Nashik, Maharashtra) : Effecting data mining using neural networks with instance typicality. Int J Syst Cybernetics Inf 2006, (Jul), 53-9.

Concept of instance typicality can be used not only to build compact yet accurate models but also to build incremental models. It can easily be incorporated with any kind of classifier, however till date, only instance-based classifiers make use of it. This paper deals with the novel method of implementing instance typicality in terms of values at the outputs of neurons in the output layer of a neural network classifier to i) select best set of training instances to build compact and accurate classification models ii) to select best set of unseen instances and iii) to build models with incremental learning ability. Experimental results show that the method is efficient.

4 tables, 14 ref

020715   Sahu A K;Pandey A;Felix sun B;Salam R (Agric Enng Dep, North Eastern Reg Inst of Sci and Technol, Nirjuli (Itanagar)-791 109, Email: aksahu@nerist.ernet.in) : Water quality assessment of Dikrong river and Nirjuli stream, India. Pollut Res 2006, 25(2), 333-5.

Laboratory study was conducted to monitor the water quality of Dikrong River and Nirjuli stream, at Nirjuli Arunachal Pradesh, India. The important partameters tested were temperature, alkalinity, pH, electrical conductivity, dissolved oxygen (DO), acidity and most probable number (MPN) of coli forms. The concentrations levels observed were above the permissible limits except acidity, alkalinity and conductivity prescribed by Bureau of Indian Standard (BIS) and European Commission (EC). Study reveals that the domestic sewage discharge from the people living nearby the bank of these two rivers is real threat for its water quality.

2 tables, 6 ref

020714   Sadhar S Ibrahim;Rajagopalan A N (Electrical Engineering Dep, Indian Institute of Tehcnology, Image Processing and Computer Vision Laboratory, Madras, Chennai-600 036, Email: sadhar@rediffmail.com) : Particle filter for identification of parametric space- variant blur. Int J Syst Cybernetics Inf 2006, (Jul), 13-19.

Authors propose a new method to estimate space-variant blur for a class of systems whose blurring functions can be parameterized. These include the Gaussian, the uniform, and the cylindrical point spread functions which are commonly used in most works. The main contribution of this paper is the development of a unified recursive framework for space-variant blur identification using the particle filter. For well-posedness, a smoothness constraint is enforced on the spatial distribution of the blur parameter. The prior and posterior probability distributions of the samples of the blur parameter are arrived at by propagating them through an appropriately derived state model and the given measurement model. The weights of the samples thus computed are used to arrive at the estimates of the blur parameter. The method is validated by demonstrating its performance on real images degraded by space-variant Gaussian blur, uniform 1-D motion blur and cylindrical blur.

8 illus, 2 tables, 10 ref

020713   Ravichandran G (WRI-BHEL, , Tiruchirappalii) : Finite element analysis of the thermal cycles in a weld joint with dissimilar thickness plates. WRI Jl 2006, 27(1), 27-31.

Thermal cycles during welding influence the rate of cooling of the weld metal and have a great influence on the mechanical properties of the weld metal such as tensile strength, hardness, toughness etc. The thermal cycles also influence the residual stresses and distortion in the weldment and the cold cracking susceptibility of the weld. Thus the knowledge of the thermal cycles and temperature distribution in the weld metal is essential for assessing the other factors. The thermal cycles during welding are dependent on the heat input, the mechanical properties such as thermal conductivity and specific heat, heat loss parameters like convection and radiation and section properties like thickness. In practical cases, the joining of plates having different thickness is quite common and the thermal cycles in such instances will be different from those for the joining of either plate. In this paper, the thermal cycles experienced by a weldment joining plates having different thickness using gas tungsten arc welding process have been analysed. The transient thermal analysis has been performed using finite element method. The thermal cycles at various locations from the weld and the temperature distribution for various time intervals have been studied. The model employed for the analysis and the thermal results are discussed in detail.

5 illus, 2 tables, 7 ref

020712   Ramesh K;Arumugam V;Mohan Kumar G (Physics Dep and Engineering Dep, Annamali Univ, Annamalai Nagar-608 002) : Mechanical and microstructure related properties in concrete specimens. Appl Sci Period 2006, 8(1), 47-9.

Mechanical and microstructure related properties such as compressive strength, surface hardness, water absorption and porosity have been measured in various strength types of 1 concrete specimens. The results obtained from the measured data are discussed interrms of t strength and its quality.

2 illus, 6 ref

020711   Ramamoorthy P;Shanmugam A;Sangeetha S (ECE Dep, Goverment College of Technology, Coimbatore) : Performance Evaluation of a novel cluster based hybrid key management scheme for secure routing in MANETs. Int J Syst Cybernetics Inf 2006, (Jul), 47-52.

Ad hoc networks are a new wireless networking paradigm in which mobile hosts rely on each other to keep the network connected without the help of any pre-existing infrastructure or central administrator. This project addresses key management, which is one of the most challenging tasks in developing security solutions for MANETs. The various steps involved in the project are clustering, key generation, determination of keys for secure symmetric and asymmetric communication and building a distributed certificate authority for secure routing. Clustering divides the network into non-overlapping clusters. The key generation protocol is based on GDH.2 algorithm. Decentralization of the certificate authority is done using ( K, N ) threshold cryptography. Simulation results show that the hybrid solution provides a significant improvement in the performance of the key management solution in terms of throughput.

4 illus, 7 ref

020710   Ramakrishnan M;Padmanaban K;Umashankar G (WRI-BHEL, , Tiruchirappalli) : Establishment of cold wire addition technique in single wire submerged Arc welding process for cealing girder assembly. WRI Jl 2006, 27(1), 5-11.

Cold wire addition has been widely accepted to be potential tool for reducing the number of passes and increasing the productivity of thick section joints. Multi wire technique of submerged arc welding process enhances the productivity in welding of structural components etc. However the cold wire addition in single wire SAW welds have the inherent advantages of higher metal deposition as compared to conventional SAW, enhancing the joint completion rate and resulting in less flux consumption. Further Cold wire addition technique does not require addition of heat input. This technique enables lower heat input per gram of wire deposited. The equipment for this technique apart from using an additional wire feeding arrangement for cold wire feeding is same as that for the submerged arc welding. The influence of the diameter of cold wire addition on the metal deposition also investigated for the same quantum of heat input, leading to finer microstructure and better mechanical properties. This paper describes the experimental work carried out at WRI and M/S Lakshmi Engg Industries , Trichy to study the effect of process parameters on bead characteristic like, bead geometry, dilution, deposition rate, hardness survey, mechanical properties, macro and microstructure analysis. The results are compared with that of submerged arc-welding technique.

13 illus, 5 tables, 2 ref

020709   Ramajayam M;Saravanan C G;Ramanathan A R; Gurumani V (Mech Eng Dep, Annamalai Univ, Annamalai Nagar, Tamil Nadu) : Performance studies of some fuel additives for emission control in S.I. engine. Pollut Res 2006, 25(2), 367-70.

Addition of various ethers and alcohols to unleaded gasoline is widely employed to improve its octane quality and to reduce CO and HC emissions in the engine exhaust. In the present study three oxygenate additives were tested for emission control of a spark ignited engine. The results indicate that the CO reduction efficiency of all the three additives is found to increase with the concentration. The CO reduction varied from 63% at minimum load to 20% at full load for 1 molar (1M) concentration. The HC emissions are slightly lower than that of neat gasoline and reduction ranges up to 28%. Among the three additives studied additive-3 is found to yield maximum CO reduction, moderate HC reduction and also NOx reduction. The other two additives reduce CO and HC but increase the NOx emission. The brake thermal efficiency is found to increase with all the additive blends for all concentrations. In general, the results indicate that additive-3 is promising for control of all the regulated emissions (viz.CO, HC, and NOx from gasoline engines.

6 illus, 4 ref

020708   Rajan J;Kaimal M R (Computer Science Dep, Kerala Univ, Trivandrum, Kerala) : A comparative analysis of fourth order and complex PDEs for noise removal. Int J Syst Cybernetics Inf 2006, (Apr), 63-8.

Comparative analysis of fourth order Partial Differential Equations (PDEs) and Complex PDEs for noise removal is done. The analysis was mainly done on the basis of Structural Similarity Index Matrix (SSIM) and Peak Signal to Noise Ratio (PSNR) The visual appearance of the signal is also considered. Analysis was done on standard images and also on one dimensional signals. The goal of this paper is to study the ability of both PDEs to remove noise by keeping the maximum image information.

5 illus, 28 ref

020707   Rajan E G (Pentagran Research Centre (P) Limited #201, Venkat Homes, MIGH-59, Mehdipatnam, Hyderabad-500 028, Email: rajaneg@yahoo.co.in) : Normal algorithms for implementing nonnumerical signal processing operations lectures series-3. Int J Syst Cybernetics Inf 2006, (Jul), 72-5.

Author describe certain string manipulating techniques, which could be used in constructing normal algorithms for signal processing purposes.

ref

020706   Radhakrishnan R;Shankarkumar K R;Jeyakumar A Ebenezer (Sri Ramakrishna Engineering College, Coimbatore, Tamilnadu) : Multi-user detection for CDMA channels:log likelihood ratio based approach. Int J Syst Cybernetics Inf 2006, (Jul), 41-6.

Computationally efficient and low complexity method for Multi User Detection (MUD) of DS-CDMA signal is proposed. Direct Sequence-Code Division Multiple Access (DS-CDMA) has been found to be attractive in applications such as Wireless Networks, Broad band local access and Cellular Telephony. The conventional DS-CDMA detector follows single user detector strategies in which each user is separately detected and more over which exhibits anomalous behaviour. A better way to improve detection of each individual user is Multi User detection. The reliability of a decision increases with "increasing magnitude of Log Likelihood Ratio (LLR), as a result the error propagation associated with a wrong decision and the resulting error probability for the remaining user can be minimized. The proposed algorithm is efficient for both coded and uncoded signals. The performance of the detector is analysed in terms of BER and SNR with low and high correlation. Simulation results show that the performance of the proposed algorithm is superior when compared with the existing multiuser detection scheme under various situations. A brief description of optimal MUD schemes is given and implementation of some low complexity sub optimal detector also described.

5 illus, 16 ref

020705   Paul G;Pradhan S N;Bhattacharya B B;Pal A;Das A (ECE Dep, Anna Univ, Chennai) : BDD-based synthesis of logic functions using adiabatic multiplexers. Int J Syst Cybernetics Inf 2006, (Apr), 44-9.

Binary Decision Diagrams (BDDs) play an important role in various VLSI design applications, especially in synthesis, verification, and testing. Several tools based on heuristic algorithms are available for generating an optimized BDD for a given order of variables, or for finding the best order. BDDs are mostly suitable for direct technology mapping to multiplexer (MUX)-based circuits and FPGAs. Shows how a BDD can be directly employed to design circuits with dual-rail adiabatic MUX blocks. The method yields around 22% reduction in the number of MUX blocks for several benchmark circuits. Use of adiabatic MUX blocks will reduce dynamic power consumption significantly, although the chip area and delay may increase to some extent.

12 illus, 1 table, 17 ref

020704   Nath K;Gor J P;Shah P N;Modi K (Chemical Engng Dep, G H Patel Coll of Engng & Technol, Vallabh Vidyanagar-388 120, Email: kaushiknath2003@yahoo.co.in) : Physicochemical parameters, isotherms, sorption kinetics and column operations for adsorption of copper (II) from wastewater using fly ash. J scient ind Res 2007, 66(2), 170-7.

Activated fly ash has been investigated for the adsorption of copper (II) dissolved in wastewater. Physico-chemical parameters such as adsorbate concentration, pH, adsorbent dose, temperature, presence of interfering ions etc were optimized by employing batch adsorption technique. Adsorption was endothermic and followed Langmuir and Freundlich isotherms, however, the latter fitted well. Isotherms were used to estimate thermodynamic parameters for the adsorption process. Kinetic data were fitted to the models of intraparticle diffusion, pseudo second order and Lagergren model which followed more closely to the pseudo second order chemisorption model. The regeneration and reusability of the adsorbents were also assessed. Maximum removal of copper was obtained at pH 4 and temperature 50°C (about 98% for adsorbent dose of 20 g/l and 50 mg/l initial feed concentration).

9 illus, 2 tables, 28 ref

020703   Nagabhooshanam E;Rajan E G (ECE Dep, CBIT, Hyderabad, Email: enb1234@rediffmail.com) : Modeling of collision avoidance processes. Int J Syst Cybernetics Inf 2006, (Apr), 55-62.

Autonomous Mobile Robots (AMRs) are in general expected to cope up with static and moving obstacles. The robot navigation is carried out in many different ways, of course depending on the type application. The robot motion is usually decided by taking into account obstacle configuration, robot kinematics and the result of the modification of the local perception. Subject to these basic constraints, several procedures and methodologies have been developed for robot navigation. Two basic approaches are currently in use for fixing the path of an AMR, at any point of time in a known environment, and instantaneous fixing of path directions depending on situations in an unknown environment purely based on data acquired by the sensors of the robot. The former approach is error free because the nature of the environment is a priori known, where as the latter approach is not. Most of the current research is being focused on to the second approach with an intention of developing a universal technique in order to meet the challenges of obstacle avoidance in any unknown environment by an AMR, the deep space with asteroids and a spaceship, for instance. Authors are concerned with the problem of identifying a technique for path generation of an AMR in an unknown environment. For the past few years, a number of path fixing techniques have been developed each having its own merits and demerits. Almost all the techniques involve the geometries, velocities, time segments and directions of motion of obstacles and AMR while fixing the path of the AMR instantaneously.

5 illus, 5 tables, 31 ref

020702   Mishra P K;Nanagre D M;Yadav V L (Chem Engng & Technol Dep, Inst of Technol, Banaras Hindu Univ, Varanasi-221 005, Email: drpkm18@rediffmail.com) : Treatment of chromium bearing wastewater using thermal parametric pumping. J scient ind Res 2007, 66(1), 79-84.

Parametric pumping (PP) is an adsorptive separation technique basem on periodic, synchronous coupled transport action. Net consequence of the coupling of alternating absorbent fluid position displacements with cycling of a thermodynamic intensive parametric variable (temperature) is a buildup of separation from cycle to cycle. Direct mode of thermal PP was used to separate Cr (VI) from wastewater using low cost adsorbent sawdust carbon. Removal of Cr (VI) decreases as initial concentration increases. For same number of cycles, separation factor increases as upper half cycle temperature increases for same initial concentration of feed. There is an increase in adsorption with increasing pH. A marked increase in separation can be achieved using thermal PP in place of adsorption.

7 illus, 6 tables, 12 ref

020701   Menaka S;Sridharan D (CSE Dep, Jerusalem College of Engineering, Chennai, Email: s_menaka@sify.com) : DDoS detection in wireless network using OMNET++. Int J Syst Cybernetics Inf 2006, (Apr), 88-94.

Denial of Service attacks constitutes a major class of security threats today. In a wireless ad-hoc networks, where the nodes are typically devices with limited bandwidth, computational resources, battery power and unpredictable routing topology, additional constraint is placed on detection and tracing technique to locate the attack sources efficiently. An overview has been made for different statistical mechanisms for detecting a DDoS attack on a wireless node. It is proposed with a technique to ensure detection of the DDoS by using trust level on the packets transmitted. The implementation of the proposed techniques is also presented in this paper.

5 illus, 10 ref

020700   Malaiyandi M;Nehrukumar V (Civil Engng Dep, Annamalai Univ, Annamalai Nagar-608 002) : Centralized management techniques for dyeing effluent sludges. Pollut Res 2006, 25(2), 339-42.

Textile bleaching and dyeing industries located in different parts of Tamilnadu have provided either individual effluent treatment plant (IETP) or common effluent treatment plant (CETP). About 2.0 to 3.0 kg of dewatered wet sludge is generated at every cubic meters of equalized dyeing effluent and large quantities of sludge are stacked because of the non-availability of a scientific disposal. The sludge samples of wet & dry condition were subjected to Toxicity Characteristics Leaching Procedure (TCLP) test and analysed for heavy metals and compared with the regulatory limits. It is found that the secured landfill technology is the only scientific solution for safe disposal of the sludge. As a typical case study, MIS Angeripalayam Common Effluent Treatment Plant (CETP) located in Thiruppur is considered and a secured landfill facility designed and presented.

1 illus, 3 tables, 4 ref

020699   Magudeswaran P N;Ramachandran T;Selvaraj P V; Kamalakkannan N (Chem Dep, VJB Janakiammal Coll of Engng and Technol, Coimbatore) : Water quality index of orathupalyam dam water. Pollut Res 2006, 25(2), 303-7.

Farmers all over the country are agitating for release of more water from Dams, whereas the farmers of Noyyal river basin resist the release of water for irrigation from Noyyal river dam, called Orathupalayam Dam. Because the effluents. let out by dyeing and bleaching industries of Tirupur spoiled not only the surface water but also the ground water. In this context, it was felt that a detailed study had to be undertaken to determine the water qualify index for Orathupalayam dam water which will be helpful even to the common man to understand the quality of water that is used. The water quality parameters included in the WQI are, dissolved oxygen (percent saturation and concentration), biochemical oxygen demand, pH, total solids, nitrates, total phosphorous, fecal coliforms and turbidity. WQI scores range from 0 (worst case) to 100 (ideal water quality). The other physico chemical parameters studied are COD, TDS, Alkalinity, electrical conductivity and chloride. All the parameters measured were found to be very compared to the limit prescribed by CPCB and thereby unfit for both drinking and irrigation.

6 tables, 14 ref

020698   Lanjewar R W;Balamurugan G;Mukherjee N P;Saha P;Chaudhury J R;Roy S S (Central Mechanical Engng Res Inst, , Durgapur-713 209) : Design and development of an ingenious cricket ball decorative stitching machine. J scient ind Res 2007, 66(3), 231-4.

Ingenious cricket ball decorative stitching machine, developed by CMERI, Durgapur, which provides simultaneous stitching of two parallel rows on each hemispherical leather cup of cricket ball has been presented. A unique dual needle-looper arrangement of chain stitching is developed for decorative stitching on curved surface of hemispherical leather cup. Salient design features and working principle of ball holding and indexing mechanism are discussed. Operation of motor drives, optical interrupter type sensor, and encoder are synchronized and automated by micro-controller with programmable and erasable memory. Machine tested successfully and will produce better quality cricket balls in less time than manual stitching.

4 illus, 2 ref

020697   Kaushik B K;Sarkar S;Agarwal R P (Electronics and Computer Engineering Dep, Indian Institute of Technology-Roorkee, Roorkee-247 667) : Crosstalk aware repeater insertion for coupled VLSI interconnects. Int J Syst Cybernetics Inf 2006, (Apr), 22-7.

Paper shows that repeater insertion reduces not only the propagation delay but also crosstalk levels for coupled lines. Repeaters can be efficiently utilized for reduction of propagation delay and crosstalk noise at a trade of marginal increase in power dissipation. The Power-Delay-Crosstalk-Product (PDCP) criterion is introduced as an efficient technique to insert repeater in coupled interconnects. Based on PDCP a reduction in crosstalk of about 60 times and delay of 4.2% is achieved at trade of 13.2% increase in power dissipation in comparison to PDP.

5 illus, 1 table, 25 ref

020696   Kaplan A Y;Byeon J G;Park B W (Biological Faculty, Lomonosov Moscow State Univ, Moscow, 119992, Russian Federation, Email: akaplan@mail.ru) : Human unconscious information processing: the implicit preference can be revealed by the analysis of brain electric signals. Int J Syst Cybernetics Inf 2006, (Apr), 9-14.

This study was designed to explore whether color implicit preference can be revealed objectively by event-related potentials (ERP) method. ERPs were recorded in reply to seven randomly delivered color stimuli while participants performed all-color-irrelevant task (free attended condition) or one-color-relevant task (not attended condition to other colors). It was found that, almost for all participants there is augmentation of P300 component in free-attended condition only for one or two certain color stimuli. These results suggest that there is individual unconscious preference of certain color perception which can be revealed by P300 index in free attended conditions. The brain mechanisms of unconscious color preference, probably, are based on an endogenous form of episodic memory update.

2 illus, 2 tables, 24 ref

020695   Joshi P K;Kumar M;Midha N;Vijayanand;Paliwal A (Phys Dep, Indian Inst of Remote Sensing (NRSA), Dehradun-248 001, Email: joshi@iirs.gov.in) : Assessing areas deforested by coal mining activities through satellite remote sensing images and GIS in parts of Korba, Chattisgarh. J Indian Soc Remote Sens 2006, 34(4), 415-22.

2 illus, 1 table, 24 ref

020694   Jayashree L S;Arumugam S;Vijayalakshmi K (NO, Kumaraguru College of Technology, Coimbatore-641 006, Email: jayashreeofkct@yahoo.co.in) : An efficient and fault tolerant aggregation scheme for distributed sesor networks using modified Z-score method. Int J Syst Cybernetics Inf 2006, (Apr), 76-81.

In-network Data Aggregation is usually warranted for distributed wireless sensor networks, owing to reliability and energy efficiency reasons. Sensor nodes are usually deployed in unattended and unsafe environments and hence are vulnerable to intentional or unintentional damages. The availability of constrained resources and the presence of faulty nodes make designing mechanisms for information aggregation in large sensor networks particularly challenging. Considered Byzantine faults where faulty nodes are assumed to send inconsistent and arbitrary values to other nodes during information sharing. These values are termed as outliers and used a well-established statistical test called Modified z-score method to reliably detect outliers and then handle them using (i) Trimming and (ii) Mean substitution methods. It has been shown by simulation that the proposed strategy achieves much better target detection accuracy than classical techniques.

5 illus, 1 table, 13 ref

020693   Gupta V B;Saurabh Kumar;Pamula H (Future Studies and Planning Dep, Devi Ahilya Univ, Indore, Madhya Pradesh, Email: saurabdavv@rediffmail.com) : Software project management manpower modeling: a system dynamic apporach. Int J Syst Cybernetics Inf 2006, (Jul), 66-71.

Software development is a complex activity that often exhibits counter-intuitive behavior, in that outcomes often vary quite radically from the intended results. Assigning more programmers to a project running behind schedule will make it even later, due to the time required for the new programmers to learn about the project, and the increased communications overhead. When N people have to communicate among themselves (without a hierarchy), as N increases, their output M decreases and can even become negative i.e. the total work remaining at the end of a day is greater than the total work that had been remaining at the beginning of that day, such as when many bugs are created. This paper presents a system dynamics model of software development, and shows an example of where adding additional manpower to a project can lead to an increased overall delay in the project delivery time.

5 illus, 4 ref

020692   El-Necklawy M M;El-Bahrawy M;Hassan A F; Niveen Farid;Arif Sanjid M (Helwan Univ, Faculty of Sci, , Cairo, Egypt, Email: arif_niv@yahoo.com) : Interferometric studies of lateral and axial displacements of an object using digital processing of speckle photography. J scient ind Res 2007, 66(1), 32-6.

Measurement of lateral and axial displacements of an object using digital processing of speckle photography provides an economic and convenient method for the mechanical manufacturing industry. Laser speckle photography is used with CCD camera to record the resultant speckle pattern through computer control. Image processing software combines the initial and final speckle images and applies the Fast Fourier Transform function (FFT) to construct interference pattern digitally. This paper explains theoretical basis and FFT algorithm. Direction and magnitude of the local displacement is determined from the orientation and spacing of the fringes. Lateral and axial displacements are measured and its uncertainty of measurement is estimated.

3 illus, 3 tables, 15 ref

020691   Chandra E;Ramaraj E (Computer Application Dep, DI Academy for Managerial Excellence, Coimbatore) : Voice print identification a secure speaker verification algorithm. Int J Syst Cybernetics Inf 2006, (Apr), 82-7.

Speech recognition is defined as the process of automatically recognizing uttered audio signals for spoken information. Speaker verification is the process of determining which registered speaker claims a given utterance or "voiceprint". The focus of this paper is providing a secure speaker verification algorithm. The research also suggests an efficient mechanism for acquiring secure audio signal acquisition through Input signal processing [1][10][11] and process the audio signal for verification.

1 illus, 5 tables, 12 ref

020690   Chakraborti N;Moitra S;Mitra A;Mukhopadhyay A (Metallurgical & Materials Engineering Dep, Indian Institute of Technology, Kharagpur (W.B.)-721 302) : Evolutionary and genetic algorithms applied to hot rolling: a multi-objective rolling schedule studied using particle swarm algorithm. Trans Indian Inst Metals 2006, 59(5), 681-88.

Hot rolling plant of an integrated steel plant is addressed using a multi-objective optimization approach. A Particle Swarm Algorithm that mimics the flight of a flock of birds or a school of fish is used to generate the Pareto fronts representing the best possible compromises between some conflicting objectives. The increasing importance of the research based upon Evolutionary and Genetic Algorithms is also highlighted.

8 illus, 1 table, 17 ref

020689   Bora D K;Nath R (NO, Indian Institute of Technology, New Delhi-110 016, Email: dilipnoraesz@rediffmail.com) : Use of nahar oil methyl ester (NOME) in CI engines. J scient ind Res 2007, 66(3), 256-8.

Nahar oil methyl ester (NOME) added (up to 30%, by vol) to neat diesel can be used in the existing engine without any symptoms of undesirable combustion. Overviews the application of NOME in CI Engines by comparing its performance and smoke opacity with conventional diesel fuel.

5 illus, 1 table, 7 ref

020688   Bhatt R B;Gopal M (Samsung India, Electronics Ltd., Noida-201 305, Email: rajen.bhatt@samsung.com) : Induction of weighted and interpretable fuzzy classification rules for medical informatics. Int J Syst Cybernetics Inf 2006, (Jul), 20-6.

Authors propose rough set driven fuzzy tree growing algorithm to extract interpretable fuzzy classification rules from medical datasets. Each proposition of rule antecedent has been weighted to quantify its importance in specific rule. The concept of compact computational domain of fuzzy-rough sets has been utilized to make the algorithm computationally efficient on larger training patterns. Proposed algorithm is then experimentally compared with fuzzy-ID3 on various well known medical datasets in terms of accuracy, speed, and tree size.

1 illus, 1 table, 18 ref

020687   Bayindir R (Electrical Educ Dep, Gazi Univ, Faculty of Technical Educ, 06500, Besevler Ankara/Turkey, Email: hayinder@gazi.edu.tr) : Design and construction of an electrical furnace to fire ceramic product. J scient ind Res 2007, 66(2), 135-40.

Electrical furnace firing the ceramic products has been designed and its automatic control has been implemented. Furnace (1OOx50x50 cm) may be used to fire even small ceramic products such as trinkets. PLC has been used, for the automation of the system. The heat from the furnace has been measured by means of thermocouples and has been transferred to the PLC by analog module and the heat of furnace has been controlled according to the obtained heat values. Besides, required heat degree and the heat in the furnace have been traced on the screen of the control panel. The sample products fired in the furnace proved that the system operated successfully with problem.

7 illus, 1 table, 23 ref

020686   Badgujar D M;Talwar M B;Asthana S N; Mathulikar P P (School of Chem Sci, North Maharashtra Univ, Jalgaon-425 001, Email: mahulikarpp@rediffmail.com) : Environmentally bening syunthesis of aromatic nitro compounds using silica supported inorganic nitrates. J scient ind Res 2007, 66(3), 250-1.

Simple, rapid, clean and environmentally benign synthesis of aromatic nitro compounds by using inorganic nitrates as nitrating agents adsorbed on silica gel as a solid support has been reported.

1 illus, 1 table, 10 ref

020685   Babita Naidu P;Patra S P;Rajshekhara Reddy B; Rajan E G (Biotechnology Dep, Ravenshaw College, Cuttack, Orrisa, Email: babita_naidu@yahoo.com) : Single processing considerations of deoxyuridine 5'-triphosphate nucleotidohydrolase (duTPase) gene. Int J Syst Cybernetics Inf 2006, (Jul), 60-5.

duTPase plays a significant role of the enzyme in DNA metabolism, and it was proposed as a novel target for anticancer drug design. It has been shown that resistance to the widely used antineoplastic drug fluorodeoxyuridine correlates to an elevation of dUTPase activity, raising the hope that dUTPase inhibitors may improve therapeutic effectiveness. In fact, membrane-permeable substrate-analogous inhibitors of dUTPase were demonstrated to be efficient against human cancer cells in vitro. This paper describes the use of signal processing concepts in analyzing such an important gene.

2 illus, 3 tables