2,325 resources related to Curve fitting
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The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted full papers will be peer reviewed. Accepted high quality papers will be presented in oral and poster sessions,will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE.
2021 IEEE Photovoltaic Specialists Conference (PVSC)
Photovoltaic materials, devices, systems and related science and technology
The Pulsed Power Conference is held on a biannual basis and serves as the principal forum forthe exchange of information on pulsed power technology and engineering.
The ACC is the annual conference of the American Automatic Control Council (AACC, the U.S. national member organization of the International Federation for Automatic Control (IFAC)). The ACC is internationally recognized as a premier scientific and engineering conference dedicated to the advancement of control theory and practice. The ACC brings together an international community of researchers and practitioners to discuss the latest findings in automatic control. The 2020 ACC technical program will
2020 IEEE 17th International Symposium on Biomedical Imaging (ISBI 2020)
The IEEE International Symposium on Biomedical Imaging (ISBI) is the premier forum for the presentation of technological advances in theoretical and applied biomedical imaging. ISBI 2020 will be the 17th meeting in this series. The previous meetings have played a leading role in facilitating interaction between researchers in medical and biological imaging. The 2020 meeting will continue this tradition of fostering cross-fertilization among different imaging communities and contributing to an integrative approach to biomedical imaging across all scales of observation.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Contains articles on the applications and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Power applications include magnet design as well asmotors, generators, and power transmission
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
Covers topics in the scope of IEEE Transactions on Communications but in the form of very brief publication (maximum of 6column lengths, including all diagrams and tables.)
1994 Proceedings of IEEE Ultrasonics Symposium, 1994
Bulk elastic, piezoelectric and dielectric constants of four lead zirconate titanate piezoceramics, Pz24, Pz26, Pz27 and Pz28, and a modified lead titanate, Pz34, are measured and used to theoretically compute the effective permittivity curve of each material from which the SAW properties are deduced. In parallel, experimental measurements of the SAW properties are carried out by using a curve fitting ...
IEE Colloquium on Progress in Fibre Optic Sensors and Their Applications, 1995
Firstly, the theory of the white light interferometer is presented. This is followed by minimum peak height difference and related experimental results. The curve fitting signal processing scheme and the best order of polynomial for curve fitting are then discussed. Finally, displacement measurement with and without curve fitting signal processing is examined. The results show that, with a two wavelength ...
2010 The 2nd International Conference on Computer and Automation Engineering (ICCAE), 2010
This paper analyzes the example of a belt conveyor on coal harbor, and adopts the newly popular Simulink simulation software based Matlab language. This software provides a new solution for system simulation technology, and not only improves the efficiency of computer programming, but greatly enhances programming equality and reliability. The jointly working scope of driving device can be attained by ...
2006 IEEE International Power and Energy Conference, 2006
In this paper, a method is proposed for modeling the loss in power systems for the economic dispatch problem. It is based on the analysis of number of second order polynomial equations which model the loss so that by calculating the coefficients of these equations the loss relation is obtained which is the main objective. In order to determine these ...
 Proceedings of the Twelfth Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 1990
Bulk elastic, piezoelectric and dielectric constants of four lead zirconate titanate piezoceramics, Pz24, Pz26, Pz27 and Pz28, and a modified lead titanate, Pz34, are measured and used to theoretically compute the effective permittivity curve of each material from which the SAW properties are deduced. In parallel, experimental measurements of the SAW properties are carried out by using a curve fitting algorithm on the real and imaginary parts of the electrical input impedance of an unapodised single electrode SAW transducer. The SAW propagation losses are also measured using a SAW delay line. A free surface wave velocity varying from 2100 m/s to 2500 m/s and a surface wave coupling coefficient k<sub>s</sub><sup>2</sup> between 1.5% and 4% are found. Both determination methods of SAW properties are discussed in terms of sensitivity and the potential of piezoceramics for SAW applications is examined
Firstly, the theory of the white light interferometer is presented. This is followed by minimum peak height difference and related experimental results. The curve fitting signal processing scheme and the best order of polynomial for curve fitting are then discussed. Finally, displacement measurement with and without curve fitting signal processing is examined. The results show that, with a two wavelength source, the central fringe can be identified if the sampling gap is smaller than the maximum sampling OPD gap. The noise in the system can be reduced by the curve fitting technique proposed. The best order of the polynomial used to carry out curve fitting is four according to the experimental results and the analysis.
This paper analyzes the example of a belt conveyor on coal harbor, and adopts the newly popular Simulink simulation software based Matlab language. This software provides a new solution for system simulation technology, and not only improves the efficiency of computer programming, but greatly enhances programming equality and reliability. The jointly working scope of driving device can be attained by their crossing points, and output characteristic curve of jointly working may be programmed by neural networks algorithm, which owning fast fitting speed, high fault-tolerant capability and nonlinear modeling performance. The output torque of driving system in s-function block is served as input source block of conveyor system, the state space block of the belt as system block and dynamic tensions as output block of conveyor system, thus the simulation model of whole conveyor system is created and solver in variable-step is selected to solve the simulation model because this solver is stable, efficient and accurate to stiff equations and the varying process of each dynamic parameters are available during full-load starting. The simulation results of conveyor system can assure smooth braking and the security of conveyor system.
In this paper, a method is proposed for modeling the loss in power systems for the economic dispatch problem. It is based on the analysis of number of second order polynomial equations which model the loss so that by calculating the coefficients of these equations the loss relation is obtained which is the main objective. In order to determine these coefficients, first the loss curve for each unit is obtained while the real power output of the noted unit is changing and the output of the rest of units is constant. The same as this procedure is implemented mathematically and one second order polynomial equation for each unit is acquired. Using curve fitting between these curves and the equations, the coefficients are calculated. Two case studies are used to evaluate the proposed method and the results are compared with the results of conventional B-method and those obtained by the load flow. The accordance between the results of the proposed method and load flow shows the accuracy of the model. The method also enjoys simple equations and process and besides it is not as time consuming as some other methods.
This work presents a methodology to obtain discrete adjustments for overcurrent relays and fuse selection using Genetic Algorithm. The purpose is to minimize the protection devices time and therefore reduce the impact caused by short circuits in an electrical installation. In addition, the mathematical formulation presented aims to ensure that the resulting protection system is coordinated and selective. The choice of fuses is made with the aid of Curve Fitting, which makes the results more accurate. The objective function presented penalizes the mismatches, so that the search for the solution does not converge to infeasible solutions. The method is tested in an electrical radial topology system and the results show its effectiveness.
The good knowledge of all parameters of the models used with the circuit simulations is one of the major prerequisites for a successful design. This is particularly true for the design of analog radio-frequency (RF) circuits. An efficient and accurate method to directly extract the parameters needed for accurate modeling of transistors in a standard CMOS sub-micron technology for RF-applications is presented. The paper concentrates on the extraction procedure, with emphasis on its simplicity, hence excluding fitting or optimization, and on the accuracy of its results. The extracted parameters are applied to a first order nonquasistatic (NQS) model and the simulation results compared with measurements. Excellent agreement between simulations and measurements up to 50GHz is achieved.
Variable threshold logic(VTL) having changeable weights and a variable threshold was implemented as a MOS circuit. Two binary codes corresponding to data and threshold are multiplied by the weights given as the channel width- to-length ratio of the transistors, and the two inner products given in voltage levels are compared in order to produce a logical output. A VTL circuit, having 16 modes of the weight and employing 16 levels of the voltage, was fabricated and is operated as desired.
To fabric defect detection of rapidity and accuracy, a new method for defect detection based on curve fitting is presented. Firstly, acquiring fabric images are processed with median filter. Then take the measures of curve fitting to the enhanced defect imagines. Finally, the edge detection was carried out to the fabric defect. Experimental results show that the algorithm can effectively suppress noise, the edges are clear and accurate, that this method improves the speed of the defect detection while keeping the accuracy of the defect detection.
We propose a novel method of greedy similarity measure to segment long spatial-temporal video sequences. Firstly, a principal curve of motion region along frames of a video sequence is constructed to represent trajectory. Then from the constructed principal curves of trajectories of predefined gestures, HMMs are applied to modeling them. For a long input video sequence, greedy similarity measure is established to automatically segment it into gestures along with gesture recognition, where true breakpoints of its principal curve are found by maximizing the joint probability of two successive candidate segments conditioned on the gesture models obtained from HMMs. The method is flexible, of high accuracy, and robust to noise due to the exploitation of principal curves, the combination of two successive candidate segments, and the simultaneous recognition. Experiments including comparison with two established methods demonstrate the effectiveness of the proposed method
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High Pressure Physics - Postdoctoral Researcher
Lawrence Livermore National Laboratory