Geovalue

Quantifying the social and economic value that geospatial information contributes to modern society is a complex task. To construct reliable and consistent valuation measures requires an understanding of the sequence of processes that starts with data acquisition, and leads to decision-makers’ choices that impact society. GEOValue explores each step in this complex value chain from the viewpoint of domain experts spanning disciplines that range from the technical side of data acquisition and management to the social sciences that provide the framework to assess the benefit to society. The book is intended to provide foundational understanding of the techniques and complexities of each step in the process. As such it is intended to be assessable to a reader without prior training in data acquisition systems, information systems, or valuation methods. In addition, a number of case studies are provided that demonstrate the use of geospatial information as a critical input for evaluation of policy pertaining to a wide range of application areas, such as agricultural and environmental policy, natural catastrophes, e-government and transportation systems.

Quantifying the social and economic value that geospatial information contributes to modern society is a complex task. To construct reliable and consistent valuation measures requires an understanding of the sequence of processes that starts with data acquisition, and leads to decision-makers’ choices that impact society. GEOValue explores each step in this complex value chain from the viewpoint of domain experts spanning disciplines that range from the technical side of data acquisition and management to the social sciences that provide the framework to assess the benefit to society. The book is intended to provide foundational understanding of the techniques and complexities of each step in the process. As such it is intended to be assessable to a reader without prior training in data acquisition systems, information systems, or valuation methods. In addition, a number of case studies are provided that demonstrate the use of geospatial information as a critical input for evaluation of policy pertaining to a wide range of application areas, such as agricultural and environmental policy, natural catastrophes, e-government and transportation systems.

快速解决诸多Hadoop相关技术问题的实用技术手册 Key Features 文字简洁,易于读者理解 精挑细选,关注最重要的任务和问题 细心组织,提供高效的问题解决方案 讲解透彻,清晰解读每个操作步骤 举一反三,将解决方案应用到其他场景中 Book Description这是一本 Hadoop 实用手册,主要针对实际问题给出相应的解决方案。本书特色是以实践结合理论分析,手把手教读者如何操作,并且对每个操作都做详细的解释,对一些重要的知识点也做了必要的拓展。 全书共包括3个部分,第一部分为基础篇,主要介绍Hadoop数据导入导出、HDFS 的概述、Pig 与 Hive 的使用、ETL 和简单的数据处理,还介绍了MapReduce的调试方式;第二部分为数据分析高级篇,主要介绍高级聚合、大数据分析等技巧;第三部分为系统管理篇,主要介绍 Hadoop 的部署的各种模式、添加新节点、退役节点、快速恢复、MapReduce调优等。 本书适合各个层次的Hadoop技术人员阅读。通过阅读本书,Hadoop初学者可以使用Hadoop 来进行数据处理,Hadoop 工程师或者数据挖掘工程师可以解决复杂的业务分析, Hadoop系统管理员可以更好地进行日常运维。本书也可作为一本Hadoop技术手册,针对要解决的相关问题,在工作中随时查阅。What you will learn Hadoop数据的导入导出 HDFS概述 Pig与Hive的使用 ETL和简单的数据处理 MapReduce的调试方式 高级聚合 大数据分析 Hadoop的各种部署模式 为Hadoop添加新节点、退役节点、快速恢复 MapReduce调优 Who this book is for 本书适合各个层次的Hadoop技术人员阅读,通过阅读本书,Hadoop初学者可以使用Hadoop来进行数据处理,Hadoop工程师或者数据挖掘工程师可以解决复杂的业务分析,Hadoop系统管理员可以更好地进行日常运维。本书也可作为一本Hadoop技术手册,针对要解决的相关问题,在工作中随时查阅。

Much has changed in the space economy over the past decade, with an ever-growing number of countries and business enterprises involved in space activities. Despite progress made in the quality and availability of data, the international comparability of space economy statistics remains limited.

Earth's orbits are polluted by more than 100 million debris objects that pose a collision threat to satellites and other spacecraft. The risk of perturbing highly valuable space-based services critical to life on Earth, such as weather monitoring and disaster management, is making debris mitigation an urgent policy challenge. This book provides the latest findings from the OECD project on the economics of space sustainability, which aims to improve decision makers’ understanding of the societal value of space infrastructure and costs of space debris. It provides comprehensive evidence on the growth of space debris, presents methods to evaluate and quantify the value of the satellites at risk and discusses ways to ensure a more sustainable use of the orbital environment. It notably includes case studies from Italy, Japan and Korea on the socio-economic value of different types of space infrastructure and discusses the feasibility and optimal design of fiscal measures and voluntary environmental rating schemes to change operator behaviour. This work is informed by contributions from researchers worldwide involved in the OECD project.

The HTML5 Programmer’s Reference aims to provide everything a programmer needs for understanding and using the new HTML5 family of standards. Previous HTML standards were focused on defining tags for marking up documents. The HTML5 family of standards not only includes new semantic tags but also defines exciting new JavaScript APIs that can be used to build rich, interactive web applications for both mobile and desktop platforms. The HTML5 Programmer’s Reference focuses on providing real-world non-trivial examples to demonstrate concepts. Chapters include both in-depth discussions and full references for all HTML5 features, as well as extras like how to find the standards, the history of their evolution, and other examples and helpful resources. With this book the reader will learn everything they need to know to build the next generation of web applications.

Key priorities include maintaining the continuity and quality of government civilian missions, levelling the playing field for private actors entering the market, and securing the orbital environment for future generations. This edition of the Space Economy in Figures delves into these topics, drawing from both established and novel economic and policy data sources.