Xuemei Wang - Böcker
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19 produkter
19 produkter
1 430 kr
Skickas inom 11-20 vardagar
Introduces chaos theory, its analytical methods and the means to apply chaos to the switching power supply designDC-DC converters are typical switching systems which have plenty of nonlinear behaviors, such as bifurcation and chaos. The nonlinear behaviors of DC-DC converters have been studied heavily over the past 20 years, yet researchers are still unsure of the practical application of bifurcations and chaos in switching converters. The electromagnetic interference (EMI), which resulted from the high rates of changes of voltage and current, has become a major design criterion in DC-DC converters due to wide applications of various electronic devices in industry and daily life, and the question of how to reduce the annoying, harmful EMI has attracted much research interest. This book focuses on the analysis and application of chaos to reduce harmful EMI of DC-DC converters. After a review of the fundamentals of chaos behaviors of DC-DC converters, the authors present some recent findings such as Symbolic Entropy, Complexity and Chaos Point Process, to analyze the characters of chaotic DC-DC converters. Using these methods, the statistic characters of chaotic DC-DC converters are extracted and the foundations for the following researches of chaotic EMI suppression are reinforced. The focus then transfers to estimating the power spectral density of chaotic PWM converters behind an introduction of basic principles of spectrum analysis and chaotic PWM technique. Invariant Density, and Prony and Wavelet analysis methods are suggested for estimating the power spectral density of chaotic PWM converters. Finally, some design-oriented applications provide a good example of applying chaos theory in engineering practice, and illustrate the effectiveness on suppressing EMI of the proposed chaotic PWM. Introduces chaos theory, its analytical methods and the means to apply chaos to the switching power supply designApproaches the subject in a systematic manner from analyzing method, chaotic phenomenon and EMI characteristics, analytical methods for chaos, and applying chaos to reduce EMI (electromagnetic interference)Highlights advanced research work in the fields of statistic characters of nonlinear behaviors and chaotic PWM technology to suppress EMI of switching convertersBridges the gap between numerical theory and real-world applications, enabling power electronics designers to both analyze the effects of chaos and leverage these effects to reduce EMI
2 458 kr
Skickas inom 7-10 vardagar
Advanced Material Interfaces is a state-of-the-art look at innovative methodologies and strategies adopted for interfaces and their applications. The 13 chapters are written by eminent researchers not only elaborate complex interfaces fashioned of solids, liquids, and gases, but also ensures cross-disciplinary mixture and blends of physics, chemistry, materials science, engineering and life sciences. Advanced interfaces operate fundamental roles in essentially all integrated devices. It is therefore of the utmost urgency to focus on how newly-discovered fundamental constituents and interfacial progressions can be materialized and used for precise purposes. Interfaces are associated in wide multiplicity of application spectrum from chemical catalysis to drug functions and the advancement is funnelled by fine-tuning of our fundamental understanding of the interface effects.
1 891 kr
Skickas inom 10-15 vardagar
This book, written by an international group of experts from China, Europe and the USA, presents a broad and comprehensive analysis of the chemical and meteorological processes responsible for the formation of air pollutants in eastern Asia, and in particular for the development of severe pollution episodes observed primarily during winter in the northeastern part of China. With the rapid population growth, economic development and urbanization occurring in Asia, air pollution has become a major environmental problem in this part of the world. The book is organized around six distinct parts. The first part of the volume offers a general perspective on issues related to air pollution including persistent haze events in eastern and southern Asia. The second part presents an overview of air pollution sources (i.e., anthropogenic and biomass burning sources). The third part analyzes in-situ observations of chemical species in China, while the fourth part focuses on space observations ofgas-phase and aerosol species. The modeling aspects are treated in the fifth part of the volume, which includes a presentation of several air quality forecast systems and an assessment of the role of urbanization on air pollution levels. Finally, the effects of air pollution on health and crop productivity in China are discussed in the last part of the book. The book also presents an integrated view of past and present situations in Asia and provides the scientific basis from which mitigation policies can be established and air quality can be improved. Audience: This book is written for scientists, educators, students, environmental managers, policy-makers and leaders in public administration and private corporations who wish to use science-based information to mitigate air pollution. The book should help decision-makers to design effective policies for air quality improvement and to successfully manage short-term air pollution episodes that substantially affect people’s quality of life and strongly impact the economy.
1 891 kr
Skickas inom 10-15 vardagar
This book, written by an international group of experts from China, Europe and the USA, presents a broad and comprehensive analysis of the chemical and meteorological processes responsible for the formation of air pollutants in eastern Asia, and in particular for the development of severe pollution episodes observed primarily during winter in the northeastern part of China. With the rapid population growth, economic development and urbanization occurring in Asia, air pollution has become a major environmental problem in this part of the world. The book is organized around six distinct parts. The first part of the volume offers a general perspective on issues related to air pollution including persistent haze events in eastern and southern Asia. The second part presents an overview of air pollution sources (i.e., anthropogenic and biomass burning sources). The third part analyzes in-situ observations of chemical species in China, while the fourth part focuses on space observations ofgas-phase and aerosol species. The modeling aspects are treated in the fifth part of the volume, which includes a presentation of several air quality forecast systems and an assessment of the role of urbanization on air pollution levels. Finally, the effects of air pollution on health and crop productivity in China are discussed in the last part of the book. The book also presents an integrated view of past and present situations in Asia and provides the scientific basis from which mitigation policies can be established and air quality can be improved. Audience: This book is written for scientists, educators, students, environmental managers, policy-makers and leaders in public administration and private corporations who wish to use science-based information to mitigate air pollution. The book should help decision-makers to design effective policies for air quality improvement and to successfully manage short-term air pollution episodes that substantially affect people’s quality of life and strongly impact the economy.
Mandarin Chinese Characters for Kids (Part 1)- Playful Pathways to Mandarin Mastery Fun Learning for All Ages
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 2)- Chinese Characters Unlocked Simple Steps for Kids and Beginners
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 3)- HSK Heroes Play, Learn, and Conquer Mandarin
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 4)- Joyful Journeys in Chinese from Beginner to Advanced
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 5)- Mandarin Magic Puzzles and Games for Every Learner
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 6)- Step into Chinese Easy, Fun, and Effective Learning
Häftad, Kinesiska, 2025
600 kr
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Mandarin Chinese Characters for Kids (Part 7)- HSK Adventure Discover Mandarin Through Play
Häftad, Kinesiska, 2025
600 kr
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Mandarin Chinese Characters for Kids (Part 8)- Playful Puzzles for Mandarin Mastery HSK Levels Included
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 9)- Kid-Friendly Chinese From Basics to Brilliance
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 10)- Chinese Characters Made Fun Simple Steps to Fluent Reading
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 11)- Mandarin Made Easy Fun Learning for Every Skill Level
Häftad, Kinesiska, 2025
563 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 12)- Unlock the Fun in Chinese HSK Puzzles for Kids and Beginners
Häftad, Kinesiska, 2025
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 13)- Playful Pathways to Mandarin Mastery, Fun & Easy Steps for Kids and Beginners, HSK Levels Included
Häftad, Kinesiska, 2026
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 14)- Chinese Characters Unlocked, Simple, Playful Learning for Kids, Beginners, and Beyond (HSK All Levels Covered)
Häftad, Kinesiska, 2026
600 kr
Skickas inom 3-6 vardagar
Mandarin Chinese Characters for Kids (Part 15)- Mandarin Magic, Play, Learn, and Master Chinese Characters with Puzzles and Fun for All HSK Levels
Häftad, Kinesiska, 2026
600 kr
Skickas inom 3-6 vardagar