Zhiqiang Wang – författare
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13 produkter
13 produkter
Häftad, Engelska, 2020
681 kr
Skickas inom 10-15 vardagar
Resource allocation is an important issue in wireless communication networks. In recent decades, cognitive radio-based networks have garnered increased attention and have been well studied to overcome the problem of spectrum scarcity in future wireless communications systems. Many new challenges in resource allocation appear in cognitive radio-based networks. This book focuses on effective resource allocation solutions in several important cognitive radio-based networks, including opportunistic spectrum access networks, cooperative sensing networks, cellular networks, high-speed vehicle networks, and smart grids.Cognitive radio networks are composed of cognitive, spectrum-agile devices capable of changing their configuration on the fly based on the spectral environment. This capability makes it possible to design flexible and dynamic spectrum access strategies with the purpose of opportunistically reusing portions of the spectrum temporarily vacated by licensed primary users. Different cognitive radio-based networks focus on different network resources, such as transmission slots, sensing nodes, transmission power, white space, and sensing channels. This book introduces several innovative resource allocation schemes for different cognitive radio-based networks according to their network characteristics: Opportunistic spectrum access networks– Introduces a probabilistic slot allocation scheme to effectively allocate the transmission slots to secondary users to maximize throughput Cooperative sensing networks– Introduces a new adaptive collaboration sensing scheme in which the resources of secondary users are effectively utilized to sense the channels for efficient acquisition of spectrum opportunitiesCellular networks– Introduces a framework of cognitive radio-assisted cooperation for downlink transmissions to allocate transmission modes, relay stations, and transmission power/sub-channels to secondary users to maximize throughputHigh-speed vehicle networks– Introduces schemes to maximize the utilized TV white space through effective allocation of white space resources to secondary usersSmart grids– Introduces effective sensing channel allocation strategies for acquiring enough available spectrum channels for communications between utility and electricity consumers
E-bok
Engelska, 2015807 kr
Läs direkt efter köp
Resource allocation is an important issue in wireless communication networks. In recent decades, cognitive radio-based networks have garnered increased attention and have been well studied to overcome the problem of spectrum scarcity in future wireless communication systems. Many new challenges in resource allocation appear in cognitive radio-based networks. This book focuses on effective resource allocation solutions in several important cognitive radio-based networks, including opportunistic spectrum access networks, cooperative sensing networks, cellular networks, high-speed vehicle networks, and smart grids.
- Nyhet
E-bok
PDF, Engelska, 2026725 kr
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This empirical study bridges the gap between theoretical models and practical application by exploring critical mechanisms for evaluating and improving the quality of innovation and entrepreneurship education (IEE) in China.Grounded in a comprehensive dataset of 201,034 questionnaires and 283 in-depth interviews collected from 1,231 universities across 31 provinces, this edited volume presents a scientific evaluation system based on the novel theoretical framework of "e;Development Status-Implementation Process-Final Results."e; Moving beyond static metrics, this dynamic approach addresses the complex needs of diverse stakeholders by covering the entire educational lifecycle. The book details the development of multidimensional indicators and classification standards tailored to different institutional types while providing validated tools for assessing performance and delivering actionable feedback.This essential resource is ideal for educators, policymakers, and administrators dedicated to deepening reform and promoting the high-quality development of innovation education in the digital era.
- Nyhet
E-bok
Engelska, 2026725 kr
Läs direkt efter köp
This empirical study bridges the gap between theoretical models and practical application by exploring critical mechanisms for evaluating and improving the quality of innovation and entrepreneurship education (IEE) in China.Grounded in a comprehensive dataset of 201,034 questionnaires and 283 in-depth interviews collected from 1,231 universities across 31 provinces, this edited volume presents a scientific evaluation system based on the novel theoretical framework of "e;Development Status-Implementation Process-Final Results."e; Moving beyond static metrics, this dynamic approach addresses the complex needs of diverse stakeholders by covering the entire educational lifecycle. The book details the development of multidimensional indicators and classification standards tailored to different institutional types while providing validated tools for assessing performance and delivering actionable feedback.This essential resource is ideal for educators, policymakers, and administrators dedicated to deepening reform and promoting the high-quality development of innovation education in the digital era.
- Nyhet
Inbunden, Engelska, 2026
2 132 kr
Skickas inom 10-15 vardagar
This empirical study bridges the gap between theoretical models and practical application by exploring critical mechanisms for evaluating and improving the quality of innovation and entrepreneurship education (IEE) in China.Grounded in a comprehensive dataset of 201,034 questionnaires and 283 in-depth interviews collected from 1,231 universities across 31 provinces, this edited volume presents a scientific evaluation system based on the novel theoretical framework of "Development Status–Implementation Process–Final Results." Moving beyond static metrics, this dynamic approach addresses the complex needs of diverse stakeholders by covering the entire educational lifecycle. The book details the development of multidimensional indicators and classification standards tailored to different institutional types while providing validated tools for assessing performance and delivering actionable feedback.This essential resource is ideal for educators, policymakers, and administrators dedicated to deepening reform and promoting the high-quality development of innovation education in the digital era.
Inbunden, Engelska, 2015
1 700 kr
Skickas inom 10-15 vardagar
Resource allocation is an important issue in wireless communication networks. In recent decades, cognitive radio-based networks have garnered increased attention and have been well studied to overcome the problem of spectrum scarcity in future wireless communications systems. Many new challenges in resource allocation appear in cognitive radio-based networks. This book focuses on effective resource allocation solutions in several important cognitive radio-based networks, including opportunistic spectrum access networks, cooperative sensing networks, cellular networks, high-speed vehicle networks, and smart grids.Cognitive radio networks are composed of cognitive, spectrum-agile devices capable of changing their configuration on the fly based on the spectral environment. This capability makes it possible to design flexible and dynamic spectrum access strategies with the purpose of opportunistically reusing portions of the spectrum temporarily vacated by licensed primary users. Different cognitive radio-based networks focus on different network resources, such as transmission slots, sensing nodes, transmission power, white space, and sensing channels. This book introduces several innovative resource allocation schemes for different cognitive radio-based networks according to their network characteristics: Opportunistic spectrum access networks– Introduces a probabilistic slot allocation scheme to effectively allocate the transmission slots to secondary users to maximize throughput Cooperative sensing networks– Introduces a new adaptive collaboration sensing scheme in which the resources of secondary users are effectively utilized to sense the channels for efficient acquisition of spectrum opportunities Cellular networks– Introduces a framework of cognitive radio-assisted cooperation for downlink transmissions to allocate transmission modes, relay stations, and transmission power/sub-channels to secondary users to maximize throughput High-speed vehicle networks– Introduces schemes to maximize the utilized TV white space through effective allocation of white space resources to secondary users Smart grids– Introduces effective sensing channel allocation strategies for acquiring enough available spectrum channels for communications between utility and electricity consumers
E-bok
PDF, Engelska, 2015807 kr
Läs direkt efter köp
Resource allocation is an important issue in wireless communication networks. In recent decades, cognitive radio-based networks have garnered increased attention and have been well studied to overcome the problem of spectrum scarcity in future wireless communication systems. Many new challenges in resource allocation appear in cognitive radio-based networks. This book focuses on effective resource allocation solutions in several important cognitive radio-based networks, including opportunistic spectrum access networks, cooperative sensing networks, cellular networks, high-speed vehicle networks, and smart grids.
849 kr
Skickas inom 10-15 vardagar
Wie gestaltet sich Interkulturelle Kommunikation als wissenschaftliche Disziplin in China und Deutschland im Vergleich? Inwieweit gibt es Unterschiede und Ähnlichkeiten im Kulturverständnis? Inwieweit wird die Entwicklung interkultureller Kompetenz als disziplinübergreifende Herausforderung in Studium und Beruf verfolgt und wo gibt es Übereinstimmungen oder Besonderheiten im Verständnis, dem Design und den Formen der Vermittlung? Die Beitragenden zu diesem Sammelband sind seit Jahren in Lehre und Forschung mit Fragen interkultureller Kommunikation beschäftigt, als Vertreterinnen und Vertreter der Disziplin oder als perspektivisch Betroffene in anderen Wissenschaftsbereichen, in denen Interkulturalität zur zentralen Lebens- und Arbeitsperspektive/Praxis gehört.
843 kr
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Wie gestaltet sich Interkulturelle Kommunikation als wissenschaftliche Disziplin in China und Deutschland im Vergleich? Inwieweit gibt es Unterschiede und Ähnlichkeiten im Kulturverständnis? Inwieweit wird die Entwicklung interkultureller Kompetenz als disziplinübergreifende Herausforderung in Studium und Beruf verfolgt und wo gibt es Übereinstimmungen oder Besonderheiten im Verständnis, dem Design und den Formen der Vermittlung? Die Beitragenden zu diesem Sammelband sind seit Jahren in Lehre und Forschung mit Fragen interkultureller Kommunikation beschäftigt, als Vertreterinnen und Vertreter der Disziplin oder als perspektivisch Betroffene in anderen Wissenschaftsbereichen, in denen Interkulturalität zur zentralen Lebens- und Arbeitsperspektive/Praxis gehört.
Del 24 - Series in Contemporary Applied Mathematics
Control Of Partial Differential Equations
Inbunden, Engelska, 2023
1 682 kr
Skickas inom 3-6 vardagar
This book is mainly a collection of lecture notes for the 2021 LIASFMA International Graduate School on Applied Mathematics. It provides the readers some important results on the theory, the methods, and the application in the field of "Control of Partial Differential Equations". It is useful for researchers and graduate students in mathematics or control theory, and for mathematicians or engineers with an interest in control systems governed by partial differential equations.
Inbunden, Engelska, 2024
1 835 kr
Skickas inom 5-8 vardagar
This book highlights the system modeling, control, diagnosis and fault-tolerant design of the suspension, and guidance system of the high-speed maglev train based on electromagnetic suspension technology. The electromagnetic suspension technology has been widely used in real-life engineering, including maglev trains, magnetic bearings, magnetic levitation vibration isolators, magnetic suspension and balance systems for wind tunnels, etc. Based on the academic researches, engineering applications, and technical innovations of high-speed maglev trains carried out by the maglev team of the National University of Defense Technology, this book summarizes the technical achievements in the field of levitation and guidance control technology of high-speed maglev train.It analyzes the research status and challenges of the suspension control technology of the electromagnetic suspension maglev train. The suspension, guidance system modeling, and controller design of the high-speed maglev train are described in detail. The performance index and performance evaluation method of the levitation and guidance system under various working conditions are analyzed respectively. A suspension scheme of permanent magnet electromagnetic hybrid suspension high-speed maglev train is proposed, and the results of the vehicle test are given in order to further improve the suspension energy consumption and heating of electromagnetic suspension high-speed maglev train. The suspension and guidance fault diagnosis and tolerant control methods of the high-speed maglev train are studied to improve the system's safety and reliability. The research and application results of suspension control technology of electromagnetic suspension maglev train are fully displayed for readers.This book is intended for researchers, scientists, engineers, and graduate students involved in the rail transit industry, train control and diagnosis, and maglev technology.
2 366 kr
Läs direkt efter köp
This book highlights the system modeling, control, diagnosis and fault-tolerant design of the suspension, and guidance system of the high-speed maglev train based on electromagnetic suspension technology. The electromagnetic suspension technology has been widely used in real-life engineering, including maglev trains, magnetic bearings, magnetic levitation vibration isolators, magnetic suspension and balance systems for wind tunnels, etc.
Based on the academic researches, engineering applications, and technical innovations of high-speed maglev trains carried out by the maglev team of the National University of Defense Technology, this book summarizes the technical achievements in the field of levitation and guidance control technology of high-speed maglev train.
It analyzes the research status and challenges of the suspension control technology of the electromagnetic suspension maglev train. The suspension, guidance system modeling, and controller design of the high-speed maglev train are described in detail. The performance index and performance evaluation method of the levitation and guidance system under various working conditions are analyzed respectively. A suspension scheme of permanent magnet electromagnetic hybrid suspension high-speed maglev train is proposed, and the results of the vehicle test are given in order to further improve the suspension energy consumption and heating of electromagnetic suspension high-speed maglev train. The suspension and guidance fault diagnosis and tolerant control methods of the high-speed maglev train are studied to improve the system''s safety and reliability. The research and application results of suspension control technology of electromagnetic suspension maglev train are fully displayed for readers.
This book is intended for researchers, scientists, engineers, and graduate students involved in the rail transit industry, train control and diagnosis, and maglev technology.
E-bok
Engelska357 kr
Läs direkt efter köp
Human life is a complex system composed of countless chemical reactions. Every breath, every heartbeat, and even every act of thinking depends on precise operations at the molecular level. All life processes are chemical reactions; all enzyme activity follows reaction kinetics; all signaling pathways are molecular interactions. Cancer, a high-incidence disease in modern society, is likewise—in essence—the result of chemical reactions falling out of balance.Yet in conventional medicine, understanding of cancer largely remains at the level of genetic mutations, tissue pathology, or clinical treatment. It is often broken into countless fragments for study, while relatively few attempt a systematic explanation from its chemical nature. Chemistry is the foundational discipline underlying medicine and the life sciences. As a foundational discipline, chemical theory is often clearer and more straightforward than medicine or biology, and it helps avoid the difficulty of reducing cancer into gene-centered fragments that are hard to integrate and understand. This book aims to fill that gap: grounded in the theory of long-term imbalance of chemical reactions within the human body, and using free radicals as the point of entry, it explains the logic of cancer's emergence, progression, and prevention from the molecular and metabolic perspectives.The goal of this book is to provide readers with a scientific, actionable viewpoint. Readers will understand how free radicals are generated in the body, how they are cleared, and how they relate—often in highly intricate ways—to cancer. More importantly, readers will learn how, in everyday life, reasonable metabolic regulation, nutrition, exercise, and lifestyle choices can reduce the risks brought about by uncontrolled free-radical activity.Knowledge and information matter—but the capacity for judgment built on top of them matters even more. I hope that both medical professionals and general readers interested in life and health will find inspiration here. Understanding the chemical logic of life is not only a key to understanding cancer; it is also a form of scientific wisdom for taking charge of health, slowing aging, and optimizing life.This book does not claim that free radicals are the only variable. Rather, free radicals are chosen because they possess three properties that other variables rarely share simultaneously: (1) nearly all known carcinogenic factors converge, at the chemical level, into abnormalities involving free radicals; (2) free radicals directly participate in covalent damage to DNA, proteins, and lipids—they are "e;executors of reactions,"e; not merely downstream markers; and (3) free-radical levels are measurable and intervenable, allowing theory to connect with practice. For these reasons, free radicals serve as the "e;intersection point"e; of this book—a methodological choice, not an exclusive assertion.Chapters 1 and 2 introduce the chemical properties of free radicals and their mechanisms in carcinogenesis. Chapters 3 and 4 explain how free radicals can account for the nine hallmarks of cancer and for all known carcinogenic factors. Chapter 5 discusses how to regulate free radicals through multiple pathways for cancer prevention and treatment. However, because metabolic computation in the human body is not yet fully developed, the realistic and feasible path still begins with lifestyle: replenishing essential nutrients, reducing toxic exposures, and lowering excessive free-radical burden. The methods described here are not esoteric—they are understandable, testable, and practicable for ordinary people.The viewpoints in this book arise from long-term observation of real cancer patients. Some patients, after diagnosis, achieved better-than-expected control during treatment through information integration and simple interventions. Practice itself is among the most powerful forms of evidence in medicine and chemistry.