krainaksiazek detection theory a rand study 20106878

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Application of wavelet analysis in damage detection and localization - 2619308088

20,00 zł

Application of wavelet analysis in damage detection and localization Politechnika Gdańska


In recent years, structural damage detection and health monitoring have been subjects of intensive investigation due to their practical importance. For important engineering structures the early detection of damage is essential since propagation of defects might lead to a catastrophic failure. A relatively recent area of research in damage identification is based on the wavelet analysis. This technique can be performed on mode shapes or static deflections of structure elements. An important feature of the wavelet transform is the ability to characterize the local irregularity introduced by damage into the displacement shape and to react to subtle changes of the structure response.  The aim of the research is to verify the applicability of the wavelet transform in damage localization in engineering structures.  The efficiency of the applied wavelets is verified by experimentally and analytically determined data. Beam, plate and shell structures are tested experimentally and compared with numerical solutions. The measurement of the beam displacements in a large number of spatially distributed points is obtained by the photogrammetric measurement technique, whereas the measurements of the beam, plate and shell mode shapes are obtained by the impulse dynamic testing.  The locations of defects indicated by a peak in the spatial variation of the transformed response are successfully determined. The application of artificial neural networks enables prediction of the crack locations even if the analyzed data are noisy and illegible.  The main advantage of the proposed damage detection technique is the effective identification of the defect position without knowledge of neither characteristics of structure nor its mathematical model. Spis treści: LIST OF SYMBOLS AND ABBREVIATIONS    1. INTRODUCTION   1.1. Damage detection in civil engineering structures  1.2. Wavelet transform application in damage detection  1.3. Aim and scope of study    2. WAVELET THEORY   2.1. Introduction to wavelet analysis  2.2. One-dimensional wavelet transform  2.2.1. Continuous wavelet transform Vanishing moments Detection of singularities  2.2.2. Discrete wavelet transform Orthogonal wavelet transform Biorthogonal wavelet transform  2.2.3. Examples of wavelets  2.3. Two-dimensional wavelet transform  2.3.1. Continuous wavelet transform  2.3.2. Discrete wavelet transform  2.3.2. l. Orthogonal wavelet transform Biorthogonal wavelet transform  2.3.3. Examples of wavelets  2.4. Summary    3. WAVELET ANALYSIS IN DAMAGE DETECTION   3.1. Input signals  3.1.1. Experimental procedure for deflection lines determination  3.1.2. Experimental procedure for mode shapes determination  3.2. Wavelet selection for damage detection  3.2.1. One-dimensional wavelets  3.2.2. Two-dimensional wavelets  3.3. Discrete and continuous wavelet transform in damage detection  3.3.1. One-dimensional wavelet transform  3.3.2. Two-dimensional wavelet transform  3.4. Boundary effects  3.4.1. One-dimensional wavelet transform  3.4.2. Two-dimensional wavelet transform  3.5. Summary and conclusions    4. DAMAGE DETECTION ON EXPERIMENTAL EXAMPLES   4.1. Beam - static deflection lines  4.1.1. Experimental investigations of beam deflection lines  4.1.2. Numerical simulations  4.1.3. Results of wavelet analysis  4.2. Beam - mode shapes  4.2.1. Experimental investigations of beam mode shapes  4.2.2. Numerical simulations  4.2.3. Results of wavelet analysis  4.3. Plate - mode shapes  4.3.1. Experimental investigations of plate mode shapes  4.3.2. Numerical simulations  4.3.3. Results of wavelet analysis  4.4. Cylindrical shell - mode shapes  4.4.1. Experimental investigations of cylindrical shell mode shapes  4.4.2. Numerical simulations  4.4.3. Results of wavelet analysis  4.5. Summary and conclusions    5. DAMAGE DETECTION SYSTEMS BASED ON NEURAL NETWORKS   5.1. Fundamentals  5.2. Damage assessment using neural networks  5.3. Backpropagation neural network  5.4. Neural network defect detection system  5.4.1. Architecture  5.4.2. Training  5.4.3. Results of testing on experimental beam deflection lines  5.4.4. Results of testing on experimental beam mode shapes  5.4.5. Results of testing on experimental plate mode shapes  5.4.6. Results of testing on experimental shell mode shapes  5.5. Summary and conclusions 6. FINAL REMARKS 6.1. General remarks 6.2. Original elements of the study ACKNOWLEDGEMENTS  REFERENCES SUMMARY IN ENGLISH SUMMARY IN POLISH


The modern modelling conceptions of business systems. Practice and theory - 2619309622

23,00 zł

The modern modelling conceptions of business systems. Practice and theory Politechnika Gdańska


This monograph is the next study of results of scientific research work The Production Systems Engineering Department of the Gdansk University of Technology. The monograph contains modern modeling concepts of business systems, examples of applications and directions of development. The research issue picked up here is up-to-date and important both to the theory and the practice. It includes the following topics: Evolution and transformation of business and manufacturing systems; Cyclical changes of the management paradigm ; Open systems in business applications; Integration of digital factory in the ERP system; Theory of industrial clusters; Word Class Manufacturing - integrated improvement program based on Six Sigma, Lean and TPM methodologies; Mean drift detection using statistical process control(case study); Quality improvement in health care services; Principles of TQM in tourist service


Competition, Innovation, and Antitrust - 2847570512

818,89 zł

Competition, Innovation, and Antitrust Springer, Berlin

Książki / Literatura obcojęzyczna

This book reviews recent progress in the theory of oligopoly and market leadership and provides new results on the theory of Stackelberg competition and Nash competition with strategic investment under endogenous entry. These theories are applied to models of competition in quantities, prices and to patent races. The results are used to propose a new approach to competition policy and issues of the abuse of dominance.Competition, Innovation, and Antitrust develops a theory of market leadership in the presence of endogenous entry of firms and applies it to models of competition in the market and for the market. On this basis, the author provides a new approach to antitrust policy which is in support of the Chicago school but founded on a solid game-theoretic framework. The analysis is applied to the study of market leadership in the New Economy and of the recent antitrust cases involving Microsoft.§Federico Etro is Associate Professor of Economics at the University of Milan, Bicocca, and President of the International Think-tank on Innovation and Competition. He has publications on leading international journals as The American Economic Review, The RAND Journal of Economics, The Economic Journal and others, and is a consultant for international organizations and companies on industrial and antitrust policy. §This book explores the role of leadership in the economic theory of oligopoly, both for static oligopoly and for dynamic patent races. I thoroughly enjoyed its refreshing perspective. Simon Anderson, University of Virginia§The simple but fundamental result on aggressive pricing by leaders facing endogenous entry, which has eluded researchers on the foundations of industrial organization so far, is bound to have a significant impact on the way people think about market entry, the role of potential competition, and issues of timing, strategic commitment and incumbency. Rabah Amir, University of Arizona§In this innovative and thoughtful book, Etro provides a novel approach to competition policy in innovative industries. Building on the notion of Stackelberg equilibrium with endogenous entry, which he has himself contributed to develop, he highlights the crucial role of potential competition in determining market performance. It will be of great value to scholars and visionary practitioners, and may hopefully have a large impact on competition policy. Vincenzo Denicol


Frontiers of Nonequilibrium Statistical Physics - 2853164780

479,62 zł

Frontiers of Nonequilibrium Statistical Physics Springer, Berlin

Książki / Literatura obcojęzyczna

The four-week period fran May 20 to June 16, 1984 was an intensive period of advanced study on the foundations and frontiers of nonequili brium statistical physics (NSP). During the first two weeks of this period, an advanced-study course on the "Foundations of NSP" was con ducted in Albuquerque under the sponsorship of the University of New Mexico Center for High-Technology Materials. This was followed by a two-week NATO Advanced Study Insti tute on the "Frontiers of NSP" in Santa Fe under the same directorship. Many Students attended both meetings. This book comprises proceedings based on those lectures and covering a broad spectrum of topics in NSP ranging fran basic problems in quantum measurement theory to analogies between lasers and Darwinian evolution. The various types of quantum distribution functions and their uses are treated by several authors. other tools of NSP, such as Langevin equations, Fokker-Planck equations, and master equations, are developed and applied to areas such as laser physics, plasma physics, Brownian motion, and hydrodynamic instabilities. The properties and experimental detection of squeezed states and antibunching are described, as well as experimental tests of the violation of Bell's inequality. Information theory, mean-field theory, reservoir theory, entropy maximization, and even a novel nonlinear generalization of quantum mechanics are used to discuss nonequilibrium phenanena and the approach toward thermodynamic equilibrium.


Digital Image Processing Algorithms and Applications - 2826697195

964,10 zł

Digital Image Processing Algorithms and Applications John Wiley & Sons Inc

Książki / Literatura obcojęzyczna

A unique collection of algorithms and lab experiments for practitioners and researchers of digital image processing technology With the field of digital image processing rapidly expanding, there is a growing need for a book that would go beyond theory and techniques to address the underlying algorithms. Digital Image Processing Algorithms and Applications fills the gap in the field, providing scientists and engineers with a complete library of algorithms for digital image processing, coding, and analysis. Digital image transform algorithms, edge detection algorithms, and image segmentation algorithms are carefully gleaned from the literature for compatibility and a track record of acceptance in the scientific community. The author guides readers through all facets of the technology, supplementing the discussion with detailed lab exercises in EIKONA, his own digital image processing software, as well as useful PDF transparencies. He covers in depth filtering and enhancement, transforms, compression, edge detection, region segmentation, and shape analysis, explaining at every step the relevant theory, algorithm structure, and its use for problem solving in various applications. The availability of the lab exercises and the source code (all algorithms are presented in C-code) over the Internet makes the book an invaluable self-study guide. It also lets interested readers develop digital image processing applications on ordinary desktop computers as well as on Unix machines.


New Trends in Nanotechnology and Fractional Calculus - 2212846389

565,60 zł

New Trends in Nanotechnology and Fractional Calculus Springer Verlag

Dla dzieci

In recent years fractional calculus has played an important role in various fields such as mechanics, electricity, chemistry, biology, economics, modeling, identification, control theory and signal processing. The scope of this book is to present the state of the art in the study of fractional systems and the application of fractional differentiation. Furthermore, the manufacture of nanowires is important for the design of nanosensors and the development of high-yield thin films is vital in procuring clean solar energy. This wide range of applications is of interest to engineers, physicists and mathematicians.Table of contentsPreface;New trends in nanotechnology: Novel Molecular Diodes Developed by Chemial Conjugation of Carbon Nanotubes with Peptide Nucleic Acid, by Krishna V. Singh, Miroslav Penchev, Xiaoye Jing, Alfredo A. Martinez-Morales, Cengiz S. Ozkan and Mihri Ozkan;Hybrid Single Walled Carbon Nanotube FETs for High Fidelity DNA Detection, by Xu Wang, Mihri Ozkan, Gurer Budak, Ziya B. Guvenc and Cengiz S. Ozkan;Towards integrated nanoelectronic and photonic devices, by Alexander Quandt, Maurizio Ferrari and Giancarlo C. Righini;New noninvasive methods for


Eye Tracking - 2826629019

511,00 zł

Eye Tracking Oxford University Press

Książki / Literatura obcojęzyczna

We make 3-5 eye movements per second, and these movements are crucial in helping us deal with the vast amounts of information we encounter in our everyday lives. In recent years, thanks to the development of eye tracking technology, there has been a growing interest in monitoring and measuring these movements, with a view to understanding how we attend to and process the visual information we encounter Eye tracking as a research tool is now more accessible than ever, and is growing in popularity amongst researchers from a whole host of different disciplines. Usability analysts, sports scientists, cognitive psychologists, reading researchers, psycholinguists, neurophysiologists, electrical engineers, and others, all have a vested interest in eye tracking for different reasons. The ability to record eye-movements has helped advance our science and led to technological innovations. However, the growth of eye tracking in recent years has also presented a variety of challenges - in particular the issue of how to design an eye-tracking experiment, and how to analyse the data. This book is a much needed comprehensive handbook of eye tracking methodology. It describes how to evaluate and acquire an eye-tracker, how to plan and design an eye tracking study, and how to record and analyse eye-movement data. Besides technical details and theory, the heart of this book revolves around practicality - how raw data samples are converted into fixations and saccades using event detection algorithms, how the different representations of eye movement data are calculated using AOIs, heat maps and scanpaths, and how all the measures of eye movements relate to these processes. Part I presents the technology and skills needed to perform high-quality research with eye-trackers. Part II covers the predominant methods applied to the data which eye-trackers record. These include the parsing of raw sample data into oculomotor events, and how to calculate other representations of eye movements such as heat maps and transition matrices. Part III gives a comprehensive outline of the measures which can be calculated using the events and representations described in Part II. This is a taxonomy of the measures available to eye-tracking researchers, sorted by type of movement of the eyes and type of analysis. For anyone in the sciences considering conducting research involving eye-tracking, this book will be an essential reference work.


Dynamic Kerr Effect - 2826655914

351,07 zł

Dynamic Kerr Effect World Scientific Publishing Co Pte Ltd

Książki / Literatura obcojęzyczna

This text is conceived as a lecture course on the theory of dielectric and Kerr effect relaxation in molecular fluids. It is based on seminars given at the University of Perpignan, Theoretical Physics Group, France and lectures at the University of Montpellier, France to final year graduate students together with third cycle students (preparing for PhD). The general programme of these lectures comprises the following: the rotational diffusion equation; perturbative solution obtained from convolution products; Kerr effect response in pulsed electric fields; rotary friction and diffusion coefficients in the case of partial slip conditions; linear detection; electric birefringence in time-varying fields; study of phase angles; the Fokker-Planck-Kramers equation; role of molecular rotational inertia; and nonlinear dielectric relaxation in coupled electric fields. The literature on the subject originates essentially from review articles which, however, are pitched at such a high level that it is very difficult for students to understand. Moreover, a lot of details are missing from the calculations in these fundamental papers. This book therefore attempts, in a more didactic manner, to fill these gaps.


Nulling Interferometers for Space-Based High-Contrast Visible Imaging and Measurement of Exoplanetary Environments - 2847097462

625,00 zł

Nulling Interferometers for Space-Based High-Contrast Visible Imaging and Measurement of Exoplanetary Environments Springer, Berlin

Książki / Literatura obcojęzyczna

High-contrast astronomical imaging has progressed significantly in the past decade. Many of these techniques have been laboratory demonstrated to perform at contrast levels adequate for the detection of Solar System-like planets and dust around nearby stars. None of them, however, have been demonstrated in space. The state of the art in high-contrast imaging systems that have been built for space-based observation, the environment best suited for spectroscopic study of exo-Earths, is the nulling interferometer that was flown on the Planetary Imaging Concept Testbed Using a Rocket Experiment (PICTURE). The PICTURE nulling interferometer, built from multiple optical elements, relies on the incorporation of additional dispersive components in order to deliver the broadband performance preferred for faint object imaging. These elements add to the cost, complexity, and misalignment risk of the instrument. §The Monolithic Achromatic Nulling Interference Coronagraph (MANIC) Brian Hicks describe in this thesis the first optic of its kind. He has taken the multiple optical element concept described in earlier works from theory to a flyable monolithic optic. Brian has advanced the state of the art in nulling interferometers by improving optical stability and robustness. Following application of the fabrication method described in this work, the design of MANIC also allows for broader band performance at higher contrast than that achieved with the PICTURE nulling interferometer.


Advances in Fractional Calculus - 2837309775

1448,58 zł

Advances in Fractional Calculus Springer Netherlands

Książki / Literatura obcojęzyczna

In the last two decades, fractional (or non integer) differentiation has played a very important role in various fields such as mechanics, electricity, chemistry, biology, economics, control theory and signal and image processing. For example, in the last three fields, some important considerations such as modelling, curve fitting, filtering, pattern recognition, edge detection, identification, stability, controllability, observability and robustness are now linked to long-range dependence phenomena. Similar progress has been made in other fields listed here. The scope of the book is thus to present the state of the art in the study of fractional systems and the application of fractional differentiation.§As this volume covers recent applications of fractional calculus, it will be of interest to engineers, scientists, and applied mathematicians.


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