The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Basic morphological processing i.e. erosion and dilation, often fails to detect various types of defects that may be present in woven fabric, mainly because of the presence of interlaced grating structure of the weft and warp of the fabric. In this paper basic grating structure is optically filtered and then gray scale morphological reconstruction operations are applied for the detection of defects...
The implementation of the phase locked loop (PLL) structured observer in high frequency signal injection schemes requires tuning of the PI controller to lock on the rotor position. The PI controller is tuned depending on the signal to noise ratio (SNR) which is related to the amount of saliency/anisotropy presented in the machine, the amplitude and phase of the incoming modulated carrier signal. Thus,...
This paper addresses the effect of load models on nodal pricing and revenue generation of distributed generation (DG) in distribution network. Most of the literatures dealing with DGs have assumed loads as constant in their analyses. Since the loads are voltage and frequency sensitive, analysis assuming constant loads will give inaccurate and misleading results. Under deregulation locational pricing...
A new integration algorithm based on use of Quasi Monte Carlo Integration (QMCI) technique is proposed for Method of Moments (MoM) solution of Integral equations. As an example, solution of the integral equation for unknown charge distribution on metallic structures is obtained. It is observed that the proposed method is not only capable of dealing with the problem of singularity efficiently but also...
In the DSM VLSI technology, wide-spread design reuse to meet customer's requirements in time enhances the probability of infringement of intellectual property (IP) of VLSI physical design. In design storage or during design transmission between two parties, encryption of a design file is a well-known technique to protect a design against hacking, although it takes significantly long time to encrypt...
Kohonen self organizing map is an important artificial neural network technique that uses competitive, unsupervised learning to produce a low-dimensional discretized representation of the input space of the training samples which preserves the topological properties of the input space. The fuzzy set theory introduces the concept of membership function to the learning process of Self Organizing Map...
The paper proposes algorithms based on both frequency and time-frequency analysis for characterization of arcing in low voltage (230 V) distribution systems. A filter bank based approach has been suggested to identify arcing. The protection system aims at preventing fire-hazards resulting from such sustained arcing currents. Experiments have been designed to simulate contact arcing in the laboratory...
Transmission of video summary frames through wireless networks needs higher bandwidth with less delay and distortion constraints as continuous media playback is necessary at the receiver. So the joint optimization of application layer with lower layers is necessary to meet certain QoS requirements. In this paper, we propose a Cross-layer design approach that jointly optimizes the physical layer, data...
A nonlinear mathematical model for the long-term arterial blood pressure dynamics is derived by integrating the key features of the regulatory mechanisms of cardiovascular-renal systems. In spite of the reduced number of dynamic equations and simplicity of the model, we have incorporated many of the ANA control mechanisms and hormonal activities which operate on different subsystems. The dynamic responses...
A novel implementation of microstrip low pass filter is proposed on the EBG structured ground plane. A high rejection bandwidth is achieved by etching the circular shaped EBG pattern on the ground plane. The offset introduced in the EBG pattern further improves the rejection bandwidth. The simulation is performed using the full wave Method of Moments based IE3D simulator. The characteristics of the...
In this paper, the authors describe the synthesis of flat-top beam power pattern for antennas composed of concentric rings of isotropic elements. The synthesis is performed by particle swarm optimization (PSO), varying amplitudes and phases of the elements radially, so as to obtain desired side lobe level and ripple of flat-top beam in the vertical plane. Example illustrates the potential of the method.
In this paper direct design of generalized B-spline filters has been presented. It has been shown how to choose filter parameters to meet the desired specifications. These filters exhibit maximally flat magnitude response and low side lobe energy as compared to Kaiser Window filter. Also a new type of adaptive B-spline filter has been developed in this paper. The application of the proposed filters...
The design of a trajectory controller for an underwater manipulator mounted on an autonomous underwater vehicle (AUV) is presented in this paper. The dynamic model of the system has been developed using bond graph modeling technique. The impact of hydrodynamic effects such as added mass, viscous drag, buoyancy force etc. on vehicle motion, and the coupled dynamics between the vehicle and the manipulator...
Developing an intelligent system for educational administration involving knowledge-intensive activities is a challenging task. Hardly adequate architectures exist which allow integration and sharing of multiple knowledge bases inherently distributed logically and physically. The intelligent systems that have been proposed in the contemporary research specifically related to educational domain, intend...
Cross-phase modulation (XPM) changes the state-of-polarization (SOP) of the channels that leads to amplitude modulation of the propagating waves in a WDM system. Due to the presence of polarization mode dispersion (PMD), the angles between the SOP of the channels change randomly and the modulation amplitude fluctuation in the perturbed channel becomes random. We analytically derive the dynamic equation...
Respiratory illness is recognized internationally as one of the commonest medical disorders affecting the world's populous countries. The identification of continuous abnormal lung sounds, like adventitious breath sounds in the total breathing cycle is of great importance in the diagnosis of obstructive airways pathologies. To this vein, the current work introduces an efficient method for the detection...
This paper proposes a novel sensor fusion algorithm to obtain instantaneous position and attitude estimates, which can either be used for aerial navigation or can be utilized to construct state feedbacks for camera stabilization. A divergence control strategy has also been formulated and the algorithm was embedded in real-time hardware. A comparative study between the proposed and conventional algorithm...
Erbium doped silicon has been analytically studied for its prospective application in on-chip optical communication. Laser functionality at 1.54 mum line of erbium emission has been analyzed. Erbium atoms in silicon host have been considered as defect centers offering strong recombination routes to injected carriers. Excitation process of erbium from the ground state to the higher excited state has...
Error control coding plays a vital role to maintain data accuracy across noisy channel. Turbo product code is a high performance error correcting code. It can be used in any communication system where a significant power saving is required or operating signal to noise ratio is very poor. This paper presents an implementation of a turbo product CODEC with Reed-Muller (16, 5, 8) as constituent codes...
In this paper we have presented a physical implementation of a topology control algorithm for MANETs. Mobile nodes follow the characteristics of the nomadic community mobility model. The proposed algorithm maintains the topology without any control message. There is no need to change routing table as connectivity of the network is maintained all through. Every node in the network is free to travel...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.