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Holistic Design of Resonant DC Transformer on Constant Voltage Conversion, Cascaded Stability and High Efficiency

Holistic Design of Resonant DC Transformer on Constant Voltage Conversion, Cascaded Stability and High Efficiency

Xin Zhang; Fanfan Lin; Hao Ma; Bin Zhao; Jingjing Huang

SPRINGER VERLAG, SINGAPORE
2023
sidottu
This book is devoted to the optimum design of the DCT in a hybrid AC/DC microgrid, which takes into account not only the influence of different inductors/capacitors values, but also numerous design goals (i.e., VCG, efficiency, stability and so on). This book examines the DCT's design problem in detail. It begins by reviewing existing DCTs in, the hybrid AC/DC microgrid and their design problems. Following that, this book proposes a family of DCT optimization design approaches to ensure that the designed DCT has good power transmission and voltage regulation ability in the hybrid AC/DC microgrid, even when the actual inductors/capacitors values fluctuate with practical power and temperature. Following that, this book provides a family of multi-objective optimization design methodologies for the DCT to guarantee that it concurrently achieves the requirements of VCG, efficiency, and system stability. This book also covers how to control the DCT in a hybrid AC/DC microgrid optimally and generically.
Holistic Design of Resonant DC Transformer on Constant Voltage Conversion, Cascaded Stability and High Efficiency

Holistic Design of Resonant DC Transformer on Constant Voltage Conversion, Cascaded Stability and High Efficiency

Xin Zhang; Fanfan Lin; Hao Ma; Bin Zhao; Jingjing Huang

SPRINGER VERLAG, SINGAPORE
2024
nidottu
This book is devoted to the optimum design of the DCT in a hybrid AC/DC microgrid, which takes into account not only the influence of different inductors/capacitors values, but also numerous design goals (i.e., VCG, efficiency, stability and so on). This book examines the DCT's design problem in detail. It begins by reviewing existing DCTs in, the hybrid AC/DC microgrid and their design problems. Following that, this book proposes a family of DCT optimization design approaches to ensure that the designed DCT has good power transmission and voltage regulation ability in the hybrid AC/DC microgrid, even when the actual inductors/capacitors values fluctuate with practical power and temperature. Following that, this book provides a family of multi-objective optimization design methodologies for the DCT to guarantee that it concurrently achieves the requirements of VCG, efficiency, and system stability. This book also covers how to control the DCT in a hybrid AC/DC microgrid optimally and generically.
Dimensionless Solution for the Cosmological Constant
In this paper in an elegant way will be present that the gravitational fine-structure constant is a simple analogy between atomic physics and cosmology. We will find the expression that connects the gravitational fine-structure constant with the four coupling constants. Perhaps the gravitational fine-structure constant is the coupling constant for the fifth force. Also will be presented the simple unification of atomic physics and cosmology. We will find the formulas for the cosmological constant and we will propose a possible solution for the cosmological parameters. Perhaps the shape of the universe is Poincar dodecahedral space. This article will be followed by the energy wave theory and the fractal space-time theory.
Madame de Staël - Charles de Villers - Benjamin Constant: - Correspondance.
Ce volume reunit pour la premiere fois les lettres echangees entre Mme de Stael, Ch. de Villers et B. Constant entre 1803 et 1815. On y decouvrira des points de vue originaux sur la litterature, l'esthetique, la philosophie et la politique, notamment sur les campagnes de Russie, d'Allemagne et de France en 1812 et 1813. Ces documents sont completes par des lettres de tiers jetant un jour nouveau sur le sort de Villers qui se voit repousse en 1814 par les autorites du pays auquel il s'etait identifie et dont il avait courageusement soutenu la cause contre l'occupant. Une annotation soignee, des textes supplementaires sur "De l'Allemagne," un index des ouvrages contemporains cites, un index des noms propres et une bibliographie font de ce livre un instrument de travail commode."
Diagnostics of rotating machines at constant and variable speeds

Diagnostics of rotating machines at constant and variable speeds

Zakarya Ouelaa; Abderrazek Djebala; Nouredine Ouelaa

Our Knowledge Publishing
2026
pokkari
The main objective of this book is to develop a method for diagnosing gear defects in stationary and variable conditions, based on the complementarity between objective and subjective approaches. The objective approach is based on vibration analysis, which detects anomalies from signals, regardless of speed variations. The subjective approach relies on sound perception to identify abnormal sounds associated with mechanical defects. After a comparative study of these two methods in noisy environments, an optimised hybrid method was proposed, combining ICEEMDAN, wavelet denoising and order analysis. The results show an increased ability to detect gear defects in non-stationary conditions. Perceptual tests carried out at ENSIM (Le Mans, France) experimentally validated the proposed approach in a realistic context, highlighting the value of combining vibration and auditory analyses for reliable diagnosis of rotating machines.
Terms of Service: Social Media and the Price of Constant Connection
Social networking has grown into a staple of modern society, but its continued evolution is becoming increasingly detrimental to our lives. Shifts in communication and privacy are affecting us more than we realize or understand. Terms of Service crystalizes this current moment in technology and contemplates its implications: the identity-validating pleasures and perils of online visibility; our newly adopted view of daily life through the lens of what is share-worthy; and the surveillance state operated by social media platforms--Facebook, Google, Twitter, and others--to mine our personal data for advertising revenue, an invasion of our lives that is as pervasive as government spying.Jacob Silverman calls for social media users to take back ownership of their digital selves from the Silicon Valley corporations who claim to know what's best for them. Integrating politics, sociology, national security, pop culture, and technology, he reveals the surprising conformity at the heart of Internet culture--explaining how social media companies engineer their products to encourage shallow engagement and discourage dissent. Reflecting on the collapsed barriers between our private and public lives, Silverman brings into focus the inner conflict we feel when deciding what to share and what to "like," and explains how we can take the steps we need to free ourselves from its grip.--Gary Shteyngart
Terms of Service: Social Media and the Price of Constant Connection
Social networking has grown into a staple of modern society, but its continued evolution is becoming increasingly detrimental to our lives. Shifts in communication and privacy are affecting us more than we realize or understand. Terms of Service crystalizes this current moment in technology and contemplates its implications: the identity-validating pleasures and perils of online visibility; our newly adopted view of daily life through the lens of what is share-worthy; and the surveillance state operated by social media platforms--Facebook, Google, Twitter, and others--to mine our personal data for advertising revenue, an invasion of our lives that is as pervasive as government spying.Jacob Silverman calls for social media users to take back ownership of their digital selves from the Silicon Valley corporations who claim to know what's best for them. Integrating politics, sociology, national security, pop culture, and technology, he reveals the surprising conformity at the heart of Internet culture--explaining how social media companies engineer their products to encourage shallow engagement and discourage dissent. Reflecting on the collapsed barriers between our private and public lives, Silverman brings into focus the inner conflict we feel when deciding what to share and what to "like," and explains how we can take the steps we need to free ourselves from its grip.
Shatterproof: How to Thrive in a World of Constant Chaos (and Why Resilience Alone Isn't Enough)
Learn how to turn stress into strength in this "impactful guide to navigating life's upheavals" (Susan Cain). Are you working too much but feel like it's never enough? Have you turned the act of pretending you're "fine" into an art form? Does self-care feel like one more item on your already long to-do list? We've been taught that resilience is the secret to navigating life's most difficult moments. But according to New York Times bestselling author, organizational psychologist, and researcher Dr. Tasha Eurich, there is one problem with this assumption. Scientifically, resilience isn't an unlimited resource, especially with the growing pressure and uncertainty we're experiencing today. What if, instead of merely "bouncing back" from stressors and setbacks, we could harness them for forward growth? Whether you're grappling with work stress, personal challenges, or the chaos of everyday life, Shatterproof offers an urgent alternative to stoic endurance as the only strategy for survival. Combining cutting-edge research, practical tools, and insights from her own struggle with a life-defining health crisis, Dr. Eurich will overturn your beliefs about what it takes to thrive through adversity, offering a scientifically supported system to help you feel better, do better, and live better than before. You'll discover how to: -Reclaim your best self when stress turns you into someone you barely recognize -Uncover the unmet needs that keep you stuck in self-limiting patterns -Turn stress into strength, exhaustion into energy, and confusion into confidence -Find peace in the present and be prepared for what the future holds -And much more When we embark on this journey, we learn that the things that break us can also uniquely remake us. That is what it means to become shatterproof.
Jesus in Me: Experiencing the Holy Spirit as a Constant Companion
USA TODAY, PUBLISHERS WEEKLY AND ECPABESTSELLER - The internationally recognized Bible teacher and daughter of Billy Graham combines unique biblical insights and her own personal stories to show how the Holy Spirit guides us in our decisions, comforts us in pain, and stays by our side at all times, enriching our daily lives. In Jesus in Me, Anne Graham Lotz draws on her rich biblical knowledge as well as her personal journey--including her recent cancer diagnosis--to help us understand that the Holy Spirit is not a magic genie, a flame of fire, or a vague feeling. He is a Person who prays for us, guides us in our relationships and decisions, comforts us in pain, and stays by our side at all times. In this seminal teaching, she explores seven key aspects of the Holy Spirit that will revolutionize how you understand and relate to this vital third Person in the Trinity. As Anne writes, "One of my deepest, richest joys has been discovering by experience who the Holy Spirit is in every step of my life's journey. Each name that He has been given--Helper, Comforter, Advocate, Intercessor, Counselor, Strengthener, and Standby--reveals another aspect of His beautiful character and has provoked in me a deep love for the One who is my constant Companion . . . Jesus in me." Discover how to better love and rely on the person of the Holy Spirit--and embrace how much He loves you through His presence, power, and provision in our daily lives. Praise for Jesus in Me "With plentiful biblical references, Lotz encourages those who already rely on Jesus to step into a purpose-filled life led by the Holy's Spirit's guidance. Christians who desire to live a life of greater purpose to glorify God will be awed by Lotz's impassioned exploration of the role of the Holy Spirit in her life."--Publishers Weekly
Pressure Measurement and Flowfield Characterization of a Two-dimensional Ideally Expanded Constant Area Air/air Ejector
Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Pressure measurement and flowfield characterization of a two-dimensional ideally expanded constant area air/air ejector" by Michael Anthony Benjamin, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Pressure Measurement and Flowfield Characterization of a Two-dimensional Ideally Expanded Constant Area Air/air Ejector
Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Pressure measurement and flowfield characterization of a two-dimensional ideally expanded constant area air/air ejector" by Michael Anthony Benjamin, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
The Happiness Cure: Why You're Not Built for Constant Happiness, and How to Enjoy the Journey
"A perceptive take on what's ailing modern society." --Publishers Weekly Find long-term meaning and contentment in the journey of life with The Happiness Cure by internationally bestselling, award-winning psychiatrist and viral TEDx speaker Dr. Anders Hansen. As a species, we've never had it so good. We're living longer and healthier lives than ever before; the sum of human knowledge and endless entertainment are only ever a few clicks away. So why are we in the midst of a mental health crisis? In The Happiness Cure, psychiatrist and well-being guru Dr. Anders Hansen presents a groundbreaking guide that explores the evolutionary roots of happiness and provides practical steps to help readers find true fulfillment. By combining cutting-edge neuroscientific research with relatable stories of ordinary individuals, Dr. Hansen offers a fresh perspective that challenges conventional thinking: the human brain isn't naturally wired for happiness. The Happiness Cure provides actionable strategies to navigate the complexities of modern life, finding joy along the way. With expertise and credibility, Dr. Anders Hansen empowers readers to take charge of their own happiness journey. Embark on a transformative path toward long-term contentment and discover the keys to a more fulfilling life. Learn about the neural pathway hacks to contentment as you explore the intricate relationship between the human brain and happiness through the latest neuroscientific research and captivating real-life stories.Gain inspiration from relatable stories of ordinary individuals who have applied the principles outlined in the book to their everyday lives.Embrace a radical new approach to fulfillment utilizing the science of happiness, focusing on long-term contentment instead of short-term gratification.Learn to better navigate the complexities of modern life and cultivate genuine happiness as you discover actionable strategies and practical steps.Benefit from the wealth of knowledge and expertise of Dr. Anders Hansen, a respected psychiatrist and viral TEDx speaker, as he guides you toward a deeper understanding of how to be happy.
Game On! Change is Constant

Game On! Change is Constant

Karen Ferris

Macanta Consulting PL T/A Karenferris.com
2019
pokkari
It's match day. Your team is playing a big game. It's going to be a tough one. This game, like all those that have been played before, is different. The ground, the weather, playing conditions, opposition, tactics, team composition, player positions have all changed. Even during the game there will be change. Player positions and roles, tactics, team numbers and players may also change. There is no resistance to change. There is resilience in the face of change. It's game on You and your organization must be the same. With increasing competition, disruption and transformation, organizations face change that is constant, complex, volatile and uncertain and happening at a pace never seen before. If you want to stay ahead of the game, you need the same resilience as your winning team. In this book, self-professed organizational change management rebel with a cause, Karen Ferris, introduces you to the tactics needed to be resilient and successful - tactics that enable you and your organization to triumph in the face today's challenges. You and your organization can be fit, skilled, capable, supported and well-prepared for constant change.
Linear Partial Differential and Difference Equations and Simultaneous Systems with Constant or Homogeneous Coefficients

Linear Partial Differential and Difference Equations and Simultaneous Systems with Constant or Homogeneous Coefficients

Luis Manuel Braga da Costa Campos; Luís António Raio Vilela

TAYLOR FRANCIS LTD
2024
sidottu
Linear Partial Differential and Difference Equations and Simultaneous Systems: With Constant or Homogeneous Coefficients is part of the series "Mathematics and Physics for Science and Technology," which combines rigorous mathematics with general physical principles to model practical engineering systems with a detailed derivation and interpretation of results. Volume V presents the mathematical theory of partial differential equations and methods of solution satisfying initial and boundary conditions, and includes applications to: acoustic, elastic, water, electromagnetic and other waves; the diffusion of heat, mass, and electricity; and their interactions. This is the third book of the volume.The book starts with six different methods of solution of linear partial differential equations (p.d.e.) with constant coefficients. One of the methods, namely characteristic polynomial, is then extended to a further five classes, including linear p.d.e. with homogeneous power coefficients and finite difference equations and simultaneous systems of both (simultaneous partial differential equations [s.p.d.e.] and simultaneous finite difference equations [s.f.d.e.]). The applications include detailed solutions of the most important p.d.e. in physics and engineering, including the Laplace, heat, diffusion, telegraph, bar, and beam equations. The free and forced solutions are considered together with boundary, initial, asymptotic, starting, and other conditions.The book is intended for graduate students and engineers working with mathematical models and can be applied to problems in mechanical, aerospace, electrical, and other branches of engineering dealing with advanced technology, and also in the physical sciences and applied mathematics.