Huijun Wu

This book introduces and integrates material flows with their nexuses in the regional socioeconomic system, to explore the environmental impacts of the system. Currently, many related studies conducted on global and country levels focus on the direct material flows including material inputs and outputs of the socioeconomic system. While they seldom consider the indirect flows derived from the nexus relationships among these materials, especially on the regional levels. This book concerns the regional differences and highlights the integration of material flows as well as their nexuses in the regional socioeconomic system. It tries to systematically analyze the environmental impacts of the system, clearly explain the relationship between socioeconomic system and natural environment, and provide the reference to achieve the sustainable development for different regions.

This book introduces and integrates material flows with their nexuses in the regional socioeconomic system, to explore the environmental impacts of the system. Currently, many related studies conducted on global and country levels focus on the direct material flows including material inputs and outputs of the socioeconomic system. While they seldom consider the indirect flows derived from the nexus relationships among these materials, especially on the regional levels. This book concerns the regional differences and highlights the integration of material flows as well as their nexuses in the regional socioeconomic system. It tries to systematically analyze the environmental impacts of the system, clearly explain the relationship between socioeconomic system and natural environment, and provide the reference to achieve the sustainable development for different regions.

This book provides both a basic understanding of stream processing in general, and practical guidance for development and research with Apache Heron in particular. It delivers to developers of streaming applications basic and systematic knowledge about Heron, which is today only scattered across project documents, technique blogs and code snippets on the Web. The book is organized in four parts: Part I describes basic knowledge about stream processing, Apache Storm, and Apache Heron (Incubating), and also introduces the Heron source repository. Part II then goes into details and describes two data models to write Heron topologies and often used topology features, including stateful processing. This part is especially targeted at software developers who write topologies using Heron APIs. Next, part III describes Heron tools, including the command-line interface and the user interface, needed to manage a single topology or multiple topologies in a data center. This part is particularlyaimed at operators who deploy and manage running jobs. Eventually, part IV describes the Heron source code and how to customize or extend Heron. This part is especially suggested for software engineers who would like to contribute code to the Heron repository and who are curious about Heron insights. Overall, this book aims at professionals who want to process streaming data based on Apache Heron. A basic knowledge of Java and Bash commands for Linux is assumed.

For data engineers and researchers new to stream processing, this practical book provides a professional reference that focuses on Apache Heron. Authors Huijun Wu and Maosong Fu from Twitter provide the basic knowledge you need to get started with this real-time processing engine. Learn how Heron serves as a general-purpose, modular, and extensible platform that you can use to support common real-time analytics use cases. Through the course of this book, you'll discover approaches for tackling challenges in stream processing systems and applications. You'll also understand how to build streaming applications that can benefit from Heron's robustness, high performance, adaptability to cloud environments, and ease of use. With this book, you'll examine: A complete study path that shows you how to develop stream processing systemsHeron's data model, system, topology submission process, architecture, and componentsHow to compile the Heron source codeMethods for migrating Apache Storm's topology to HeronHeron components, including state manager, scheduler, topology master, stream manager, instance, metrics manager, and metrics cacheHeron tools, including tracker, UI, and explorerNew features, such as health manager, Python topology, delivery semantics, and API server

Mobile Cloud Computing: Foundations and Service Models combines cloud computing, mobile computing and wireless networking to bring new computational resources for mobile users, network operators and cloud computing providers. The book provides the latest research and development insights on mobile cloud computing, beginning with an exploration of the foundations of cloud computing, existing cloud infrastructures classifications, virtualization techniques and service models. It then examines the approaches to building cloud services using a bottom-up approach, describing data center design, cloud networking and software orchestration solutions, showing how these solutions support mobile devices and services. The book describes mobile cloud clouding concepts with a particular focus on a user-centric approach, presenting a distributed mobile cloud service model called POEM to manage mobile cloud resource and compose mobile cloud applications. It concludes with a close examination of the security and privacy issues of mobile clouds.