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This Week in PNAS

The growing need have handwritten Marathi character recognition in Indian offices such as passport, railways etc has made it vital area of a research. How to Send a Secret Message. The welding samples have been subjected to tensileshear tests and the surfaces of failures were analyzed by scanning electron microscopy SEM Some recommendations referring the electing of the optimum welding parameters were formulated.. Ways to Browse Looking for your favorite natural celebrity interviews? Rijmen, Efficient Implementation of the Rijndael S-box, I need a detangling conditioner that is hypoallergenic! This paper investigates the effect of orthogonal frequency division multiplexing OFDM transmission mode on the performance of the cyclic prefix- CP based frequency synchronization technique.

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Majda , and Xin T. Kvam , Timothy J. Pleskac , Shuli Yu , and Jerome R. Drews , Nguyen H. Nguyen , Kyle J. Bishop , and Sharon C. Amir Haji-Akbari and Pablo G. Brady , and Steven A.

Cortese-Krott , Gunter G. Kuhnle , Alex Dyson , Bernadette O. Fernandez , Marian Grman , Jenna F. DuMond , Mark P. Bruce King , Joseph E. Saavedra , Larry K.

Butler , and Martin Feelisch. Leibfarth , Jeremiah A. Johnson , and Timothy F. Faysal Bibi and Wolfgang Kiessling. Bramer , Daniel C. Fortin , John E. Patel , Trenton C. Pulsipher , Jennie S. Rice , Teklu K. Tesfa , Chris R. Vernon , and Yuyu Zhou. Aranson , Andreas R.

Bausch , and Erwin Frey. James Habyarimana and William Jack. Ori Weisel and Shaul Shalvi. Sibhatu , Vijesh V. Krishna , and Matin Qaim. Biological Sciences Agricultural Sciences You have access. Parton , Myron P. Gutmann , Emily R. Merchant , Melannie D.

Hartman , Paul R. Adler , Frederick M. McNeal , and Susan M. Frederick , Michael T. Harper , Holley L.

Weeks , Antonio F. Branco , Peter J. Moate , Matthew H. As a result of this simplification, the computational complexity of the detection is lowered significantly. An architecture for realizing very high data rates over the rich-scattering wireless channel," in Proc.

Wong Kwan wai,chi-YingTsui and cheng,R. H Golub and C. Van Loan , Matrix Computations, third ed. Composite materials are ideal for aerospace applications due to their high strength to weight ratio and their excellent fatigue resistance. Fiber reinforced Composite is widely used in light weight structures for different applications. The main properties that describe a composite material are the engineering constants and the strength properties of a single unidirectional lamina that make the laminated structure.

The experimental evaluation of these properties is quite costly and time consuming because they are functions of several variables such as the individual constituents of the composite, fiber volume fraction, packing geometry and fabrication processes. Hence, analytical models to predict these properties were developed by researchers to aid the design of composites.

In recent years numerous failure theories have been proposed and are available to the composite structural designer. Object of this review is to gather the available guide lines for theoretical models of failure analysis of fiber reinforced Composite.

Tao, Purdue University, D. Fault studies are important power system analysis for stable and economical operations of power systems. Faults are categorised as symmetrical and unsymmetrical. In this paper, three-phase symmetrical fault is simulated using the Nigerian Bus, kV Transmission Grid. Two different MatLab based programmes were developed; one program was for Load Flow Studies which determines prefault conditions for the power system based on Newton-Raphson method.

The other program determines fault current magnitudes for threephase short-circuit on the power system. The information gained from the fault studies can be used for proper relay select Key words: Reference [1] Muhammad, Aree A. Chand and Company Ltd. Investment in inventory absorbs a large portion of the working capital of a company and often it represents a large portion of the total assets of a business. By improving return on investment by increasing the rate of inventory turnover, management often wants to ensure economic efficiency.

Effective inventory management enables a firm to provide lower costs, rapid response and flexibility for its customers. Just-in-time JIT philosophy is most widely adopted and practices in the recent years worldwide. It aims at reducing total production costs by producing only what is immediately needed and eliminates wastes.

It is based on a radically different concept, deviating substantially from the existing manufacturing practices in many respects. It is a very effective tool to reduce the wastage of inventory and manage it effectively. It has the potential to bring substantial changes in the existing setup of a company; can give it a new face, broaden its acceptability and ensure a longer life.

It can strategically change the atmosphere needed for longer survival. The new outlook acquired by the company can meet global expectations of the customers. JIT happens to provide global markets. The present paper examines the strategic role of JIT in inventory management. Information technology helps JIT in managing inventory effectively, as it helps in integrating the components of supply chain network. Quality aspect of inventory management has also been discussed.

Getting control of just-in-time, Harvard Business Review, pp. Ward, P May L and Peterson, L. Management failure, John Wiley, U. The design has been proposed such that it shows a decrease in the value of ratio of the area of elliptical air holes to that of the wafer dimension.

The effect of variation in wafer dimension of a constant lattice size is analyzed for observing the unique properties of PCF like dispersion, birefringence, confinement loss and other polarizing properties.

The dispersion reported is almost zero at a wavelength of 0. It is observed that all the structures proposed has shown the most negative dispersion in between the wavelength range of 0. Besides zero confinement loss is observed at a wavelength of 0. Russell, "Photonic bandgap guidance in optical fibers," Science, vol. Russell, "Photonic crystal fibers: Fujita, "Opticalproperties of a low-loss polarization-maintaining photonic crystal fiber", Opt.

Russell, "Endless single-mode photonic crystal fiber," Opt. Sankawa, ""Dispersion flattened photoniccrystal fiber with large effective area and low confinement loss," J. Haxha,"Highly birefringent PCF with ultralow chromatic dispersion and low confinement loss", Journal of light wave technology, Vol. M Abdur,Namihira, Yoshinori,"Simultaneous control of dispersion and confinement loss with octogonal PCF for communication system", The international conference on electrical engineering , No.

Mede, Photonic crystal fiber: Molding the flow of light, 2nd edition, Priceton University Press, A better way for enhancement in productivity Abstract: Productivity is the impact of peoples working together. Machines are merely an extended way of collective imagination and energy. Lean Manufacturing is the most used method for continues improvement of business. Organization management philosophy focusing on the reduction of wastage to improve overall customer value.

It is commonly believed that Lean started in Japan "The notable activities in keeping the price of Ford products low is the steady restriction of the production cycle. The longer an article is in the process of manufacture and the more it is moved about, the greater is its ultimate cost.

Although individual components or building blocks of Lean may be tactical and narrowly focused, we can only achieve maximum effectiveness by using them together and applying them cross-functionally through the system. Roberts, a , "Does managementmatter: Van Reenen b , "Americans do I. An Integrated Approach to Just-in- [3]. Journal of Operations Management, 19 1 , The foremost objective of the proposed research is to synthesize magnetically-active CdTe nanowires that can be manipulated by magnetic fields.

The ability to do so will facilitate fabrication of molecular electronics and a whole host of other potential applications. Doped CdTe particles with suitable magnetic moments will then be converted to CdTe wires using a technique originally developed for undoped CdTe. The changes in morphology, size, composition, and structure will be monitored using the same analytical methods used for characterization of the precursor nanoparticles. Finally, nanowires that possess a sufficient magnetic moment will be aligned using a magnetic field to prove the viability of this approach for manufacturing nanoscale devices and electronics.

A new approach to a fundamental technology, Eurotechnology Japan K. Jun, Y; Jung, Y. B, , , 9. In this paper, it is aimed to deal with the interactions of harmonic currents produced by different single phase loads. For this purpose, compact fluorescent lamps, incandescent lamps, and electric heaters were chosen as single phase loads. The study was performed by adopting a full range of response surface methodology using Box—Behnken experimental design to express the net harmonic current 3rd and 5th as an empirical model.

The model provided an excellent explanation of the relationship among the number of loads and the net harmonic currents. Contour graphs of some of the harmonic currents was plotted to show the interactions clearly and to discuss the results of model in the graphic detail.

The results of experiments showed that the harmonic interaction between the loads can be defined as a regression model which is statistically significant. Doyle, "Estimating the net harmonic currents produced by selected distributed single-phase loads: Prudenzi, "The continuous harmonic monitoring of single-phase electronic appliances: Mohamed, "Determining harmonic characteristics of typical single phase non-linear loads", Proc.

In this paper, an efficient method for high speed hardware implementation of AES algorithm is presented. So far, many implementations of AES have been proposed, for various goals that effect the Sub Byte transformation in various ways. These methods of implementation are based on combinational logic and are done in polynomial bases. In the proposed architecture, it is done by using composite field arithmetic in normal bases. In addition, efficient key expansion architecture suitable for 6 sub pipelined round units is also presented.

Drutarovsky, Two methods of Rijndael mplementation in reconfigurable hardware, in Proc. Verbauwhede, Architectural optimization for a 1. Rijmen, Efficient Implementation of the Rijndael S-box, Available online at www. Rohatgi, Efficient implementation of Rijndael encryption with composite field arithmetic, in Proc. FPL , Portugal, Sept. The paper presents a new approach to improve the performance of finger-vein identification systems presented in the literature.

The proposed system simultaneously acquires the finger-vein and low-resolution fingerprint images and combines these two evidences using a novel score-level combination strategy.

We examine the previously proposed finger-vein identification approaches and develop a new approach that illustrates it superiority over prior published efforts. We develop and investigate two new scorelevel combinations, i. Park, "Restoration method of skin scattering blurred vein image for finger vein recognition," Electron. Ye, "Driver identification using finger-vein patterns with Radon transform and neural network," Expert Sys.

Patent 20 A1, Apr. Extraction of finger-vein patterns using maximum curvature points in image profiles - N. Human identification using knucklecodes - A.

Personal recognition using hand-shape and texture - A. High resolution fingerprint matching using level 3 features - A.

Determining the atmospheric stability classes for Mazoe in Northern Zimbabwe Abstract: The paper presents the method that was used in determining the atmospheric stability classes for a place called Mazoe Citrus situated in Northern Zimbabwe for two consecutive years, and The stability classes are an important tool to be used in the environmental impact assessment for an area before an industrial power plant is set up.

International journal of environment and Pollution, 14 6 , , Meteorology and Atmospheric Physics; Sprigler 93 3 , , Y, Lamb B leclers M. Y, Lovejoy S, Multifractional analysis of line source plume concentration in surface layer flows. Journal of applied Meteorology 40, , H, Instanteneous concentration fluctuations in point source plumes, AlChE journal 32 10 , , A, Atmospheric transport and diffusion over cities; Nuclear safety 13, , H, Meteorology and Atomic Energy, National information services, Samples of African bush mango Irvingia gabonensis were collected from the wild, sun dried for four days to a moisture content of The kernels were divided into samples A and B; sample B was sun dried for three days to obtain different moisture content level from sample A.

Both samples were then used for the experiments. Some selected physical and mechanical properties of dika nut were determined at two moisture content levels. This study was done under approved standard laboratory conditions using standard engineering methods and instruments. The two moisture content levels of The result revealed higher values for the physical properties at moisture content level of The following values were obtained for samples A and B respectively: The coefficient of static friction was highest on plywood and least on glass for both samples.

From the values obtained, it appears the increase in sizes of dika kernel may aid a decrease in coefficient of static friction.

The force required to fracture and compress sample A are 25N and The force required to fracture and compress sample B was also gotten as African bush mango, kernel, moisture content, physical properties, mechanical properties Reference 1.

Determination of fungi and aflatoxin in shelved bush mango seeds Irvingia spp. African Journal of Biotechnology, 5 Marketing trends and potentials for Irvingia gabonensis products in Nigeria. Irvingia gabonensis, May , Ibadan, Nigeria. Some physical properties of fenugreek Trigonellafoenum-graceuml seeds. Journal of food Engineering. Mechanical properties of corncob under quasi-static radial compression.

Transactions of the ASAE, 26, Moisture Measurement — Un-ground grain and seeds. ASABE standards, pp Physical and thermal properties of coffee. Journal of Agricultural Engineering Research. Physical properties of soybean.

Journal of Agricultural Engineering Research 56 pp. Extraction and Processing of Agbono Cotyledon for long shelf-life. Physical properties of sunflower seeds. Determination of physical properties of some Agricultural Grains. Research Journal of Applied sciences, Engineering and Technology, 2 5: In this paper alternate mechanism for design and analysis of small size stone crusher mechanism is discussed.

The basic idea is to optimize the design of the crusher which would be best suited for stone which need crushing force of 3 Tons. Presently for reducing sizes of stones from 10cm x 10cm to 2. Dynamic, Kinematic synthesis and analysis, Sector gear, Static. Reference 1 Anjali J. Gupta, Theory of Machines, edition 8 Robert L. Norton,Machine Design,pearson Second edition.

D Thesis in Minning and Mineral Engineering, "Fracture toughness based models for the prediction of power consumption,product size, and capacity of jaw crushers" July This paper focuses on the study of magnetohydrodynamic mixed convection flow of a micropolar fluid near a stagnation point on a vertical stretching sheet in the presence of radiation and mass transfer.

Using the similarity transformations, the governing equations have been transformed into a system of ordinary differential equations. The resultant dimensionless governing equations are solved employing fourth order Runge-Kutta method along with shooting technique. The effects of various governing parameters, namely, material parameter, radiation parameter, magnetic parameter and velocity ratio parameter on the velocity, microrotation, temperature and concentration, as well as the skin friction, the rate of heat transfer and the rate of mass transfer have been computed and shown graphically.

It is observed that the micropolar fluid helps in the reduction of drag forces and also act as a cooling agent. Reference [1] Eringen, A. Alouini, Digital Communications over Fading Channels. Comparison of Interestingness Measures: Data Mining is considered to be a step of paramount importance in the process of Knowledge Discovery in Databases.

The term "Interestingness Measure" unequivocally forms a very essential aspect of extraction of "interesting" rules from databases. As there are a huge number of association rules or patterns that are generated by most Association Rule Mining Algorithms, there arises a need to prune away the unnecessary and unwanted rules. The rules that are crucial and indispensable can therefore be presented to the end user based on the application of these "Interestingness Measures".

The reason this is done is so that the user gets a narrow focus on only those rules that will provide better business understanding and intelligence. However, there are a plethora of measures available today, and selecting the best amongst them requires a thorough research on each of them. This paper therefore provides a comparative study of certain important measures, thereby highlighting which measure is apt for application in which situation. International Journal of Computer Applications 62 15 , , International Journal of Computer Applications 54 11 , , User oriented description and multiple criteria decision aid, European Journal of Operational Research, Volume , issue 2 January 16, , The papers aim to make a comparative study of binary phase codes in Radar pulse compression.

Pulse compression allows radar to use long waveforms in order to obtain high energy and simultaneously achieve the resolution of a short pulse by internal modulation of the longpulse. This technique increases signal bandwidth through frequency or phase coding. This paper does a comparative analysis of binary codes based on the simulation results of their autocorrelation function and identifies 13 bit Barker code as the most optimal binary code for surveillance radar.

Reed—Solomon RS codes are widely used to identify and correct errors in storage systems and transmission and. When RS codes are used for so many memory system and reduces error in data. Reed-Solomon codes are the most used in digital data storage systems, but powerful for tool burst errors. To correct multiple random errors and burst errors in order, The composing of product code in to column-wise RS codes and row-wise RS codes may allow to decode multiple errors beyond their error correction capability.

The consists of proposed code is two shortened RS codes and a conventional Reed-Solomon code. Reed-Solomon codes are the most Powerful used in data storage systems. The proposed code can correct 16 symbol errors. Whitaker, "An ultra-low power, radiation-tolerant reed Solomon encoder for space applications," in. Tungsten inert gas welding is one of the widely used techniques for joining ferrous and non ferrous metals. TIG welding offers several advantages like joining of dissimilar metals, low heat affected zone, absence of slag etc.

The aim of this paper is to investigate the effect of TIG welding process parameters on welding of Aluminium Response Surface Methodology was used to conduct the experiments. The parameters selected for controlling the process are welding speed, current and gas flow rate.

Strength of welded joints were tested by a UTM. Percent elongation was also calculated to evaluate the ductility of the welded joint. From the results of the experiments, mathematical models have been developed to study the effect of process parameters on tensile strength and percent elongation. Optimization was done to find optimum welding conditions to maximize tensile strength and percent elongation of welded specimen. Confirmation tests were also conducted to validate the optimum parameter settings.

Ravindra reddy, "Parameter design for MIG welding of Al- alloy using Taguchi technique", Journal of scientific and industrial research, vol 70,,pp. Balasubramanian, "Optimization of pulsed current gas tungsten arc welding process parameters to attain maximum tensile strength in AZ31B magnesium alloy", Trans. International Journal of Engineering research and applications, vol2,, pp.

Jayabalan,"Predictio n and optimization of Pulsed current gas tungsten arc welding process parameters to obtain sound weld pool geometry in Titanium alloy using lexicographic method",JMEPEG 18,,pp Datta, "Prediction of weld bead geometry and penetration in shielded metal arc welding using artificial neural network", Journal of material processing technology, ,pp , [10] P.

Murugan, "optimization of weld bead geometry for stainless steel claddings deposited by FCAW" Journal of material processing technology,vol ,,pp. In this paper, images of real- world natural scenes and manmade structures of different depth are taken. With increase in image depth , roughness increases in case of man-made structures whereas natural scene images become smooth, thus reducing the local roughness of the picture.

Such kind of specific arrangement produces a particular spatial pattern of dominant orientations and scales that can be described using Gabor filter as it gives the local estimate of frequency content in an image.

Here various techniques are used i. Here the real scene images are classified in four classes such as near natural, near manmade, far natural and far manmade. Gabor filter only classify into low energy and high energy scenes. In the proposed method i. Its properties like low cost, high bandwidth and significant progress has been made in understandingthe behavior of TCP and congestion-controlled traffic over CSMA based multihop wireless networks.

Despite these advances, however, no prior work identified severe throughput imbalances in the basic scenario of mesh networks, in which a one-hop flow contends with a two-hop flow for gateway access.

In this paper, we demonstrate via real network measurements, testbed experiments, and an analytical model that starvation exists in such a scenario; i. Our analytical model yields a solution consisting of a simple contention window policy that can be implemented via standard mechanisms defined in IEEE Despite its simplicity, we demonstrate through analysis, experiments, and simulations that the policy has a powerful effect on network-wide behavior, shifting the network's queuing points, mitigating problematic MAC and transport behavior, and ensuring that TCP flows obtain a fair share of the gateway bandwidth, irrespective of their spatial location.

Higher-Speed Physical Layer Extension in the 2. The electrocardiogram ECG is widely used for diagnosis of heart diseases.

Good quality of ECG is utilized by physicians for interpretation and identification of physiological and pathological phenomena. However, in real situations, ECG recordings are often corrupted by artifacts. Noise severely limits the utility of the recorded ECG and thus need to be removed, for better clinical evaluation.

Donoho and Johnstone [4, 5, 10] proposed wavelet thresholding denoising method based on discrete wavelet transform DWT with universal threshold is suitable for non-stationary signals such as ECG signal.

In the present paper a new thresholding technique is proposed for de-noising of ECG signal. This new de-noising method is called as improved thresholding de-noising method could be regarded as a compromising between hardand soft-thresholding de-noising methods. The advantage of the improved thresholding de-noising method is that it retains both the geometrical characteristics of the original ECG signal and variations in the amplitudes of various ECG waveforms effectively.

The experimental results indicate that the proposed method is better than traditional wavelet thresholding de-noising methods in the aspects of remaining geometrical characteristics of ECG signal and in improvement of signal-tonoise ratio SNR. ECG signal, wavelet de-noising, discrete wavelet transform, improved thresholding Reference [1] Pan. Mc Clintock, and A. Stefanovska, "Noise and deterministic in cardiovascular dynamics", Physica A.

Johnstone, "Ideal spatial adaptation via wavelet shrinkage", Biometrika, , Vol. Marques de sa, "ECG noise filtering using wavelets with softthresholding methods", Computers in Cardiology, vol. Mallat, "A theory for multiresolution signal decomposition: Johnstone, "Adapting to unknown smoothness via wavelet shrinkage", J. Zhao, "Three novel models of threshold estimator for wavelets coefficients", 2nd International Conference on Wavelet Analysis and Its Applications, Berlin: The demand for silent machine operation in any of the organization is prime need in today's environmentally conscious world.

The legal aspects of noise control requires a silent and noise free operation of the machine. The vibration and noise resulted due to it is the common phenomena in any dynamic machinery.

In this paper an attempt has been made to found a suitable Viscoelastic material which can minimize the vibration and results into less noise and efficient operation. Viscoelastic material, Vibration, FFT analyzer. Tillema, Thesis Noise reduction of rotating machinery by viscoelastic bearing supports, University of Twente, Enschede, Netherlands, pp. This paper investigates the effect of orthogonal frequency division multiplexing OFDM transmission mode on the performance of the cyclic prefix- CP based frequency synchronization technique.

Five different OFDM transmission modes are developed and frequency synchronization is performed on each of them in turn. The results show that synchronization performance improves with increase in the order of transmission mode IFFT size but with increase in CFO estimation time.

Ippolito, Satellite communications systems engineering West Sussex: John Wiley and Sons Ltd. Ajayi, Orthogonal frequency division multiplexing OFDM for future mobile multimedia communications, International Journal of Engineering, 5 4 , , The necessity in image compression continuously grows during the last decade. A number of image compression techniques have been developed in the past different kind of application.

In recent years, discrete time wavelet transform DWT is observed to be very efficient for image compression techniques. Mallat, "A theory for multi resolution signal decomposition: Pattern Analysis and Machine Intelligence, vol. On Circuits and Systems for Video Tech. Power Quality is one of the primary concerns of the utilities, since lack of quality in power may cause malfunctions, instability, short lifetime and so on. The efficiency and sustainability of a power system is highly dependent on the maintenance of good quality of power supply.

Conventional Methods have been used to analyze the transient effects but found to be high resource consuming under remote applications. In this aspect the Discrete Wavelet Transformation DWT analysis has gained reputation of being a very effective and efficient analysis tool. VHDL is used to implement DWT architecture for improving the efficiency of estimation and response in the power systems. The evaluations are compared with theoretical results from MATLAB and were observed to be meeting the accuracy of estimation.

Vetterli " Wavelets and signal processing. Kovacevic " Wavelets and Subband Coding". Multiplying floating point numbers is a critical requirement for DSP applications involving large dynamic range.

The multiplier was verified against Xilinx floating point multiplier core. It handles the overflow and underflow cases. Rounding is not implemented to give more precision when using the multiplier in a Multiply and Accumulate MAC unit. The construction industry in recent years has incorporated information technology which serves to facilitate the conceptualization and realization of construction projects.

BIM has attracted widespread popularity recently; however, there is several challenges concerning its definitions and expectations in early phases of construction projects. Evidently different organizations and people create their own definitions of BIM, based on the specific way they work with BIM. Thus, it is evident that there are differences in the way BIM is perceived by both different individuals and organizations within the construction industry.

As a result, it might be difficult to come up with a common definition of BIM for the entire construction industry. This can lead to misunderstandings concerning expectations from different stakeholders involved in construction projects where BIM is utilized. It is suggested that the definition of BIM should not be unilateral but rather encompass several key characteristics which have been attributed to it. Joo, Building information modelling BIM framework for practical implementation, Automation in Construction 20 2 , , To design a high speed multiplier with reduced error compensation technique.

The fixed-width multiplier is attractive to many multimedia and digital signal processing systems which are desirable to maintain a fixed format and allow a little accuracy loss to output data.

This paper presents the Design of error compensated truncation circuit and its implementation in fixed width multiplier. To reduce the truncation error, we first slightly modify the partial product matrix of Booth multiplication and then derive an effective error compensation function that makes the error distribution be more symmetric to and centralized in the error equal to zero, leading the fixed-width modified Booth multiplier to very small mean and mean-square errors.

However, a huge truncation error will be introduced to this kind of fixed-width modified Booth multipliers. To overcome this problem, several error compensated truncation circuit approaches have been proposed to effectively reduce the truncation error of fixed-width modified Booth multipliers. Very Large Scale Integr. The operation of VSI is supported by a dc storage capacitor with proper dc voltage across it. Any change in the load affects the dc-link voltage directly. The sudden removal of load would result in an increase in the dc-link voltage above the reference value, where as sudden increase in load would reduce the dc-link voltage below its reference value.

Conventionally, a Proportional-Integral PI controller is used to maintain the dc-link voltage to the reference value. It uses deviation of the capacitor voltage from its reference value as its input. However the transient response of the conventional PI dc-link controller is slow. To maintain the dc-link voltage at the reference value, the dc-link capacitor needs a certain amount of real power, which is proportional to the difference between the actual and reference voltages.

To overcome the disadvantage of the conventional PI dc-link voltage controller, a fast-acting dc-link voltage controller is proposed. To maintain the dc-link voltage of fast acting controller reference value is proportional to the difference between the squares of the actual and reference voltages.

Mathematical equations are given to compute the gains of the conventional controller based on fast-acting dc-link voltage controllers to achieve similar fast transient response. The value of the dc-link capacitor can be selected based on its ability to regulate the voltage under transient conditions..

The efficiency of the proposed controller over the conventional dc-link voltage controller has been developed in MATLAB environment, simulated and obtained related waveforms. This methodology provides a numerical approach to observability analysis. The approach enables observability analysis and restoration pseudo-measurement selection in a simple way with iteration, via triangular factorization of the jacobian matrix of the weight least square state estimator. An algorithm for precious measurement of topological observability in large bus — system state estimation has been proposed.

The algorithm is based on observation that the search for a spanning tree of full rank. We use observability algorithm and state estimation algorithm. We use the Mat lab to obtain the various graphs of bus systems.

By using simulation method of bus system we analyze the observability. Power system state estimation, Observability analysis, Pseudo — measurement. Reference 1 Fred C. Schwepp and Wildes "Power static state estimation Part- 1: Davis "Power System Observability: Mukhedkar, "Power systems observability: Kusic "Computer aided power systems analysis" Prentice hall of india, 6 V. Quintana, A Simoes-costa and A. As health care centres have becomes popular, daily monitoring of health-status related parameters is becoming important.

An easy, comfortable and patient friendly solution for acquisition, processing and remotely transmitting the information from patient to the centre is therefore an important issue. Phonocardiogram PCG is a physiological signal reflecting the cardiovascular status. This paper deals with a Signal Processing Module for the computer-aided analysis of the condition of heart. The module has three main blocks: Data acquired includes the heart sounds.

The system integrates embedded internet technology and wireless technology. As the data is being send by internet, it realizes real-time recording and monitoring of physiological parameter of patients at low cost and both at home and in hospital. The analysis can be carried out using computer initially and further by doctor. The tele-monitoring system may provide a low-cost, reliable and convenient solution for data acquisition and real time analysis of the PCG.

The heart sounds are acquired using an acoustic stethoscope and then processed using software developed using the simulation tool Python 2. Abrams, Current concepts of the genesis of heart sounds. First and second sounds, Jama, vol. Khan, Third heart sound: The heart arteries and veins, 7th ed. Hard turning is a machining process defined of hardness higher than 45 HRC under appropriate cutting tools and cutting speed.

The objective of this paper is to investigate the optimum process parameters for a particular work piece-tool material combination. In this study, three levels of each parameters viz. AISI H 11 was taken as work piece material. The experiment is designed using Taguchi Method. The final results of experimental investigation are presented in this paper.

The conclusions arrived at are critically discussed at the end.. Turning versus grinding—a comparison of surface integrity aspects and attainable accuracies. Ann CIRP ;42 1: Cutting of hardened steel. Ann CIRP ;49 2: Tool wear and surface integrity in hard turning. Prod Eng ;3 1: Hard turning—Influence on the workpiece properties. Identification of cutting errors in precision hard turning process. J Mater Process Tech ;— Rech J, Moisan A.

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