(A 5 session Mandarin language course for native Spanish speakers.)Este curso de cinco sesiones, diseñado para hablantes de español, está enfocado en enseñar los fundamentos del mandarín a través de un formato completamente en audio. Se hace hincapié en la pronunciación precisa y en la comprensión auditiva de frases comunes y cotidianas del idioma. A lo largo de las sesiones, los estudiantes aprenderán a identificar los sonidos característicos del mandarín y a distinguir los tonos,...

This book focuses on security science and technology, data and information security, and mobile and network security for space-air-ground integrated networks (SAGINs). SAGIN are expected to play an increasingly important role in providing real-time, flexible, and integrated communication and data transmission services in an efficient manner. Today, SAGINs have been widely developed for a range of applications in navigation, environmental monitoring, traffic management, counter-terrorism, e...

The Targeted Poverty Alleviation programme was proposed by President Xi in 2013 and aims to give poor people the resources to lift themselves out of poverty. No fewer than three million cadres have been sent to the least developed areas of the country to educate, inspire and help the most impoverished people with financial support, jobs and business opportunities. The authors of this series of books visited some of the villages that were previously very poor, to document how developments i...

Microforming Technology: Theory, Simulation and Practice addresses all aspects of micromanufacturing technology, presenting detailed technical information and the latest research developments. The book covers fundamentals, theory, simulation models, equipment and tools design, practical micromanufacturing procedures, and micromanufacturing-related supporting systems, such as laser heating system, hydraulic system and quality evaluation systems. Newly developed technology, including micro w...

This collection features five peer-reviewed reviews on ensuring the welfare of laying hens.The first chapter highlights the key welfare issues in poultry housing and management, focussing on the use of conventional cages to house laying hens. The chapter then explores the emergence of enriched cages and cage-free housing, as well as the benefits and risks of each system on bird health and welfare.The second chapter reviews the range of welfare issues affect...

It’s been suggested that current poultry production must increase by at least 2.5% per year until 2030 to meet demand from a rapidly growing population. However, whilst modern, more intensive production systems offer the potential to meet this demand, they also bring with them increased safety and environmental risks.Improving poultry meat safety and sustainability provides a comprehensive overview of how best to deal with zoonotic diseases which continue ...

Incorporating Chinese, European, and International standards and units of measurement, this book presents a classic subject in an up-to-date manner with a strong emphasis on failure analysis and prevention-based machine element design. It presents concepts, principles, data, analyses, procedures, and decision-making techniques necessary to design safe, efficient, and workable machine elements. Design-centric and focused, the book will help students develop the ability to conceptualize desi...

内容简介连接古与今，让更多人走进良渚世界，看见5000年。良渚文明是中国第一个进入早期国家的区域文明，良渚古城是实证中华5000年文明史的圣地。第43届世界遗产委员会将良渚古城遗址载入《世界遗产名录》。2019年良渚文化被写进中学历史课本。良渚文化距今5300~4300年，目前我们所知道的良渚，并无历史文献记载，是通过考古将无数碎片拼缀而成的。本书将带你听见良渚传来的隐密不可察觉的声音。这是一本记录良渚文明及其考古、申遗历程的大众读物，作者用“考古发掘式的写法”、从城墙、低坝、王陵这三块碎片集中展示了良渚文明的各个方面：复杂的王国古城、当时世界上最大的水利系统、超精微雕刻具有统一精神信仰内含的良渚玉器、良渚人的生活和生产；良渚考古80余年的历程：良渚的初始发现、良渚王墓的发现过程、良渚古城的发现、良渚水利系统的发现；良渚申遗的历程：良渚申遗文本的产生、良渚申遗评审、见证良渚申遗成功等等。本书作为大众读物，记录了良渚文明及其考古、申遗的全过程。借用考古发掘的手法，层层递进，展示了良渚文明的各个方面。包括良渚王墓、古城、水利系统的发现，以及良渚申遗的历程等。同时把目光投向背后的...

6G Key TechnologiesAn accessible and integrated roadmap to the technologies enabling 6G developmentIn 6G Key Technologies: A Comprehensive Guide, two internationally well-recognized experts deliver a thoroughly original and comprehensive exploration of the technologies enabling and contributing to the development of 6G. The book presents the vision of 6G by reviewing the evolution of communications technologies toward 6G and examin...

Modeling and Numerical Simulation of Proton Exchange Membrane Fuel Cells: Concept, Methods, and Challenges provides a concise guide to the modeling of PEM fuel cells. The book offers detailed methodologies, codes, and algorithms on every aspect of PEM fuel cells, from cold start to degradation. Chapters cover the development, basic principles, and components of PEM fuel cells, discuss the transport phenomena and mathematical formulation of macro-scale PEM fuel cell models, single cell and ...

Seismic Risk Analysis of Nuclear Power Plants addresses the needs of graduate students in engineering, practicing engineers in industry, and regulators in government agencies, presenting the entire process of seismic risk analysis in a clear, logical, and concise manner. It offers a systematic and comprehensive introduction to seismic risk analysis of critical engineering structures focusing on nuclear power plants, with a balance between theory and applications, and includes the latest ad...

This book presents a systematic and comprehensive overview of the authors' recent innovative research on the folding mechanics of deployable composite structures. It begins by introducing foundational concepts, including the energy method, variational principles, and the core theory of composite mechanics. The discussion then advances to detailed theoretical models addressing large deformations across various folding modes—such as the compression and bending of tape-springs, the behavior o...