Download or read book Random Permanents written by Yu. V. Borovskikh and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-05-18 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: No detailed description available for "Random Permanents".
Download or read book Theory of Probability and Mathematical Statistics written by and published by . This book was released on 1994 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Hohenheim System in the Management of Permanent Pastures for Dairy Cattle written by Thompson Elwyn Woodward and published by . This book was released on 1938 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Position Sensorless Control Techniques for Permanent Magnet Synchronous Machine Drives written by Gaolin Wang and published by Springer Nature. This book was released on 2019-11-15 with total page 305 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book focuses on position sensorless control for PMSM drives, addressing both basic principles and experimental evaluation. It provides an in-depth study on a number of major topics, such as model-based sensorless control, saliency-based sensorless control, position estimation error ripple elimination and acoustic noise reduction. Offering a comprehensive and systematic overview of position sensorless control and practical issues it is particularly suitable for readers interested in the sensorless control techniques for PMSM drives. The book is also a valuable resource for researchers, engineers, and graduate students in fields of ac motor drives and sensorless control.
Download or read book The Art of Progressive Censoring written by N. Balakrishnan and published by Springer. This book was released on 2014-07-24 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers a thorough and updated guide to the theory and methods of progressive censoring, an area that has experienced tremendous growth over the last decade. The theory has developed quite nicely in some special cases having practical applications to reliability and quality. The Art of Progressive Censoring is a valuable reference for graduate students, researchers, and practitioners in applied statistics, quality control, life testing, and reliability. With its accessible style and concrete examples, the work may also be used as a textbook in an advanced undergraduate or a beginning graduate course on censoring or progressive censoring, as well as a supplementary textbook for a course on ordered data.
Download or read book Permanent Magnet Synchronous and Brushless DC Motor Drives written by Ramu Krishnan and published by CRC Press. This book was released on 2017-12-19 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: Despite two decades of massive strides in research and development on control strategies and their subsequent implementation, most books on permanent magnet motor drives still focus primarily on motor design, providing only elementary coverage of control and converters. Addressing that gap with information that has largely been disseminated only in journals and at conferences, Permanent Magnet Synchronous and Brushless DC Motor Drives is a long-awaited comprehensive overview of power electronic converters for permanent magnet synchronous machines and control strategies for variable-speed operation. It introduces machines, power devices, inverters, and control, and addresses modeling, implementation, control strategies, and flux weakening operations, as well as parameter sensitivity, and rotor position sensorless control. Suitable for both industrial and academic audiences, this book also covers the simulation, low cost inverter topologies, and commutation torque ripple of PM brushless DC motor drives. Simulation of the motor drives system is illustrated with MATLAB® codes in the text. This book is divided into three parts—fundamentals of PM synchronous and brushless dc machines, power devices, inverters; PM synchronous motor drives, and brushless dc motor drives. With regard to the power electronics associated with these drive systems, the author: Explores use of the standard three-phase bridge inverter for driving the machine, power factor correction, and inverter control Introduces space vector modulation step by step and contrasts with PWM Details dead time effects in the inverter, and its compensation Discusses new power converter topologies being considered for low-cost drive systems in PM brushless DC motor drives This reference is dedicated exclusively to PM ac machines, with a timely emphasis on control and standard, and low-cost converter topologies. Widely used for teaching at the doctoral level and for industrial audiences both in the U.S. and abroad, it will be a welcome addition to any engineer’s library.
Download or read book Introduction to Permanent Plug and Abandonment of Wells written by Mahmoud Khalifeh and published by Springer Nature. This book was released on 2020-01-27 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book offers a timely guide to challenges and current practices to permanently plug and abandon hydrocarbon wells. With a focus on offshore North Sea, it analyzes the process of plug and abandonment of hydrocarbon wells through the establishment of permanent well barriers. It provides the reader with extensive knowledge on the type of barriers, their functioning and verification. It then discusses plug and abandonment methodologies, analyzing different types of permanent plugging materials. Last, it describes some tests for verifying the integrity and functionality of installed permanent barriers. The book offers a comprehensive reference guide to well plugging and abandonment (P&A) and well integrity testing. The book also presents new technologies that have been proposed to be used in plugging and abandoning of wells, which might be game-changing technologies, but they are still in laboratory or testing level. Given its scope, it addresses students and researchers in both academia and industry. It also provides information for engineers who work in petroleum industry and should be familiarized with P&A of hydrocarbon wells to reduce the time of P&A by considering it during well planning and construction.
Download or read book Modern Permanent Magnet Electric Machines written by Jacek F. Gieras and published by CRC Press. This book was released on 2022-12-05 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: The late 1980s saw the beginning of the PM brushless machine era, with the invention of high-energy density permanent magnets (PM) and the development of power electronics. Although induction motors are now the most popular electric motors, the impact of PM brushless machines on electromechanical drives is significant. Today, PM machines come second to induction machines. Replacement of electromagnetic field excitation systems by PMs brings the following benefits: No electrical energy is absorbed by the field excitation system and thus there are no excitation losses, causing substantial increase in efficiency Higher power density (kW/kg) and/or torque density (Nm/kg) than electromagnetic excitation Better dynamic performance than motors with electromagnetic excitation (higher magnetic flux density in the air gap) Simplification of construction and maintenance Less expensive for some types of machines Modern Permanent Magnet Electric Machines: Theory and Control serves as a textbook for undergraduate power engineering students who want to supplement and expand their knowledge in the fundamentals of magnetism, soft magnetic materials, permanent magnets (PMs), calculation of magnetic circuits with PMs, modern PM brushed DC machines and their controls, modern PM brushless DC motors and drive control, and modern PM generators. The book can help students learn more about electrical machines and can serve as a prescribed text for teaching elective undergraduate courses such as modern permanent magnet electrical machines. Since the book is written in a simple scientific language and without redundant mathematics, it can also be used by practicing engineers and managers employed in electrical machinery or electromagnetic device industries.
Download or read book Permanent Magnetism written by J.M.D Coey and published by Routledge. This book was released on 2019-07-16 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the first books to approach magnetism from a metal physics perspective, Permanent Magnetism presents research ideas that are being translated into commercial reality for ferrite and Nd-Fe-B magnets, and follows the discovery of interstitial, intermetallic materials. Written by well-known authors, the book contains a comprehensive yet concise treatment of the fundamental theory underlying permanent magnetism and illustrates applications with modern, permanent magnetic materials, including ceramics and intermetallic compounds. Each chapter contains worked examples to reinforce applications and the appendices include detailed mathematics and tabular data on material properties.
Download or read book Sensorless Control of Permanent Magnet Synchronous Machine Drives written by Zi Qiang Zhu and published by John Wiley & Sons. This book was released on 2023-12-19 with total page 501 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive resource providing basic principles and state-of-the art developments in sensorless control technologies for permanent magnet synchronous machine drives Sensorless Control of Permanent Magnet Synchronous Machine Drives highlights the global research achievements over the last three decades and the sensorless techniques developed by the authors and their colleagues, and covers sensorless control techniques of permanent magnet machines, discussing issues and solutions. Many worked application examples are included to aid in practical understanding of concepts. Written by two pioneering authors in the field, Sensorless Control of Permanent Magnet Synchronous Machine Drives covers sample topics such as: Permanent magnet brushless AC and DC drives Single three-phase, dual three-phase, and open winding machines Modern control theory based sensorless methods, covering model reference adaptive system, sliding mode observer, extended Kalman filter, and model predictive control Flux-linkage and back-EMF based methods for non-salient machines, and active flux-linkage and extended back-EMF methods for salient machines Pulsating and rotating high frequency sinusoidal and square wave signal injection methods with current or voltage response, at different reference frames, and selection of amplitude and frequency for injection signal Sensorless control techniques based on detecting third harmonic or zero-crossings of back-EMF waveforms Parasitic effects in fundamental and high frequency models, impacts on position estimation, and compensation schemes, covering cross-coupling magnetic saturation, load effect, machine saliency and multiple saliencies, inverter non-linearities, voltage and current harmonics, parameter asymmetries, and parameter mismatches Techniques for rotor initial position estimation, magnetic polarity detection, and transition between low and high speeds Describing basic principles, examples, challenges, and practical solutions, Sensorless Control of Permanent Magnet Synchronous Machine Drives is a highly comprehensive resource on the subject for professionals working on electrical machines and drives, particularly permanent magnet machines, and researchers working on electric vehicles, wind power generators, household appliances, and industrial automation.
Download or read book Educating for Peace in a Time of Permanent War written by Paul R. Carr and published by Routledge. This book was released on 2012-05-31 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: What is the meaning of peace, why should we study it, and how should we achieve it? Although there are an increasing number of manuscripts, curricula and initiatives that grapple with some strand of peace education, there is, nonetheless, a dearth of critical, cross-disciplinary, international projects/books that examine peace education in conjunction with war and conflict. Within this volume, the authors contend that war/military conflict/violence are not a nebulous, far-away, mysterious venture; rather, they argue that we are all, collectively, involved in perpetrating and perpetuating militarization/conflict/violence inside and outside of our own social circles. Therefore, education about and against war can be as liberating as it is necessary. If war equates killing, can our schools avoid engaging in the examination of what war is all about? If education is not about peace, then is it about war? Can a society have education that willfully avoids considering peace as its central objective? Can a democracy exist if pivotal notions of war and peace are not understood, practiced, advocated and ensconced in public debate? These questions, according to Carr and Porfilio and the contributors they have assembled, merit a critical and extensive reflection. This book seeks to provide a range of epistemological, policy, pedagogical, curriculum and institutional analyses aimed at facilitating meaningful engagement toward a more robust and critical examination of the role that schools play (and can play) in framing war, militarization and armed conflict and, significantly, the connection to peace.
Download or read book Personality Isn t Permanent written by Benjamin Hardy and published by Penguin. This book was released on 2020-06-16 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt: Psychologist and bestselling author Benjamin Hardy, PhD, debunks the pervasive myths about personality that prevent us from learning—and provides bold strategies for personal transformation In Personality Isn’t Permanent, Dr. Benjamin Hardy draws on psychological research to demolish the popular misconception that personality—a person’s consistent attitudes and behaviors—is innate and unchanging. Hardy liberates us from the limiting belief that our “true selves” are to be discovered, and shows how we can intentionally create our desired selves and achieve amazing goals instead. He offers practical, science-based advice to for personal-reinvention, including: • Why personality tests such as Myers-Briggs and Enneagram are not only psychologically destructive but are no more scientific than horoscopes • Why you should never be the “former” anything--because defining yourself by your past successes is just as damaging to growth as being haunted by past failures • How to design your current identity based on your desired future self and make decisions here-and-now through your new identity • How to reframe traumatic and painful experiences into a fresh narrative supporting your future success • How to become confident enough to define your own life’s purpose • How to create a network of “empathetic witnesses” who actively encourage you through the highs and lows of extreme growth • How to enhance your subconscious to overcome addictions and limiting patterns • How redesign your environment to pull you toward your future, rather than keep you stuck in the past • How to tap into what psychologists call “pull motivation” by narrowing your focus on a single, definable, and compelling outcome The book includes true stories of intentional self-transformation—such as Vanessa O’Brien, who quit her corporate job and set the Guinness World Record for a woman climbing the highest peak on every continent in the fastest time; Andre Norman, who became a Harvard fellow after serving a fourteen-year prison sentence; Ken Arlen, who instantly quit smoking by changing his identity narrative; and Hardy himself, who transcended his childhood in a broken home, surrounded by issues of addiction and mental illness, to earn his PhD and build a happy family. Filled with strategies for reframing your past and designing your future, Personality Isn’t Permanent is a guide to breaking free from the past and becoming the person you want to be.
Download or read book Demonstratio mathematica written by and published by . This book was released on 2001 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transient and Permanent Error Control for Networks on Chip written by Qiaoyan Yu and published by Springer Science & Business Media. This book was released on 2011-11-18 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses reliability and energy efficiency of on-chip networks using cooperative error control. It describes an efficient way to construct an adaptive error control codec capable of tracking noise conditions and adjusting the error correction strength at runtime. Methods are also presented to tackle joint transient and permanent error correction, exploiting the redundant resources already available on-chip. A parallel and flexible network simulator is also introduced, which facilitates examining the impact of various error control methods on network-on-chip performance.
Download or read book Permanent Citizens Assemblies written by Larry Patriquin and published by Rowman & Littlefield. This book was released on 2019-12-02 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: For a growing number of people, democracy has become synonymous with broken promises and abandoned commitments. Governments everywhere are not listening to their citizens’ concerns on matters of fundamental importance. As a result, ordinary men and women of all political persuasions are demanding transformations, not just to government policies, but to the methods of governance themselves. They realize that in the periods between general elections, they have great difficulty having their voices heard, because they have no formal role in constructing political agendas. This book focuses on one way to address this problem, by establishing a continual dialogue between individuals and their governments, hence forcing politicians to constantly pay attention to “the people.” Larry Patriquin argues for the creation of permanent citizens’ assemblies, which would be charged with examining issues of public concern and giving advice to governments. For those troubled by our current democratic impasse, Permanent Citizens’ Assemblies: A New Model for Public Deliberation will give hope that practical reforms are possible and that new institutions can become effective components of governance in nations across the globe.
Download or read book Permanent Habit Control written by Brian S. Grodner, PhD, ABPP and published by Springer Publishing Company. This book was released on 2010-01-18 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grodner and Reid present the first professional book that attempts to permanently change health behaviors using Ericksonian Hypnotherapy. This book provides mental health professionals with a practical resource that will help them initiate permanent habit change in their clientsí lives. Hypnotherapy has been proven to help people break poor eating habits, quit smoking, reduce alcohol and drug consumption, and manage stress. The book provides eclectic and innovative behavioral and naturalistic interventions that can be individually tailored to help clients regain control of their lives. The authors offer specific strategies, processes, metaphors, images, reframing techniques, task assignments, and other innovative techniques for managing unwanted habits beginning with the initial client contact and continuing through relapse prevention and follow-up reinforcement sessions. Assists practitioners in helping clients understand and access their internal resources to help them initiate permanent habit control Demonstrates how to employ the Enneagramóa profound psychological and spiritual tool for understanding the self and offering pragmatic insight to initiate behavioral changes Presents case histories from the authors' own clinical work to illustrate the interventions in practical and strategic ways Includes end-of-chapter activities to improve skills such as generating individualized treatment plans and conducting personality assessments Hypnotherapy serves as a less expensive alternative approach for improving the quality of life and helping people adopt healthier lifestyles through behavioral change.
Download or read book The Rediscovery of Synchronous Reluctance and Ferrite Permanent Magnet Motors written by Gianmario Pellegrino and published by Springer. This book was released on 2016-04-28 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book offers an essential compendium on the analysis and design of synchronous motors for variable-speed applications. Focusing on synchronous reluctance and ferrite permanent-magnet (PM) synchronous reluctance machines, it provides a broad perspective on three-phase machines for variable speed applications, a field currently dominated by asynchronous machines and rare-earth PM synchronous machines. It also describes synchronous reluctance machines and PM machines without rare-earth materials, comparing them to state-of-the-art solutions. The book provides readers with extensive information on and finite element models of PM synchronous machines, including all relevant equations and with an emphasis on synchronous-reluctance and PM-assisted synchronous-reluctance machines. It covers ferrite-assisted machines, modeled as a subcase of PM-assistance, fractional slot combinations solutions, and a quantitative, normalized comparison of torque capability with benchmark PM machines. The book discusses a wealth of techniques for identifying machine parameters, with an emphasis on self-commissioning algorithms, and presents methods for automated machine design and optimization, including a software tool developed for this purpose. Addressing an important gap in the field of PM-less and less-PM electrical machines, it is intended as a self-contained reference guide for both graduate students and professional machine designers, and as a useful text for university courses on automated and/or optimized design of electrical machines and drives.
