Alan Oxley – författare

Uncertainties in GPS Positioning: A Mathematical Discourse describes the calculations performed by a GPS receiver and the problems associated with ensuring that the derived location is a close match to the actual location. Inaccuracies in calculating a location can have serious repercussions, so this book is a timely source for information on this rapidly evolving technology.

Covers how a GPS receiver works and how the earth is modeled so position data can be calculated Discusses the different signals and clock speeds of the satellites, the receivers, and sources of inaccuracy Examines how the errors are distributed in the data and provides examples

Uncertainties in GPS Positioning: A Mathematical Discourse describes the calculations performed by a GPS receiver and the problems associated with ensuring that the derived location is a close match to the actual location. Inaccuracies in calculating a location can have serious repercussions, so this book is a timely source for information on this rapidly evolving technology.- Covers how a GPS receiver works and how the earth is modeled so position data can be calculated- Discusses the different signals and clock speeds of the satellites, the receivers, and sources of inaccuracy- Examines how the errors are distributed in the data and provides examples

Security measures can be used by management, IT staff, and users in participatory/collaborative service provision within the public sector. Security Risks in Social Media Technologies explores this use. Topics are targeted, and issues raised and lessons learnt are analyzed. The book helps the reader understand the risks posed by relevant Web 2.0 applications and gives clear guidance on how to mitigate those risks. The body of the book is concerned with social media, the dominant Web 2.0 technology associated with security in the public sector, and is structured into eight chapters. The first chapter introduces the background for the work; the second covers uses of social media; the third covers relevant security threats; the fourth chapter concerns the security controls applied to the participation-collaboration pattern; the fifth chapter then considers acceptable use practices; the sixth chapter covers participation-collaboration in the context of schools; the seventh chapter shows an alternative way of classifying controls to that given in the fourth chapter; and the final chapter offers a conclusion.- Focuses on the security issues of social media, specifically in the public sector- Written by a leading researcher and practitioner- Shows best practices for mitigating risk in the use of social media