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Local Search in Combinatorial Optimization (PDF)
by Emile Aarts Jan Karel LenstraIn the past three decades, local search has grown from a simple heuristic idea into a mature field of research in combinatorial optimization that is attracting ever-increasing attention. Local search is still the method of choice for NP-hard problems as it provides a robust approach for obtaining high-quality solutions to problems of a realistic size in reasonable time. Local Search in Combinatorial Optimization covers local search and its variants from both a theoretical and practical point of view, each topic discussed by a leading authority. This book is an important reference and invaluable source of inspiration for students and researchers in discrete mathematics, computer science, operations research, industrial engineering, and management science. In addition to the editors, the contributors are Mihalis Yannakakis, Craig A. Tovey, Jan H. M. Korst, Peter J. M. van Laarhoven, Alain Hertz, Eric Taillard, Dominique de Werra, Heinz Mühlenbein, Carsten Peterson, Bo Söderberg, David S. Johnson, Lyle A. McGeoch, Michel Gendreau, Gilbert Laporte, Jean-Yves Potvin, Gerard A. P. Kindervater, Martin W. P. Savelsbergh, Edward J. Anderson, Celia A. Glass, Chris N. Potts, C. L. Liu, Peichen Pan, Iiro Honkala, and Patric R. J. Östergård.
The Locales Framework: Understanding and Designing for Wicked Problems (Computer Supported Cooperative Work #1)
by G. FitzpatrickSo much technology works, not by good design or by being a good fit to purpose, but because people make it work because they have to for some reason. We humans are incredibly creative and resourceful when it comes to getting something done. There are numerous stories we could all tell of the ingenious work-arounds we've developed to make something do what we want it to; or the enormous amount of time we've spent trying to find out how to make some technology work as we want, e.g., trying to find out how to turn off auto-editing commands in a word processing package when all we want is for it to 'do what we tell it'. A good example of this principle was what motivated me to switch from neural networks to the area of Computer Supported Cooperative Work (CSCW) for my PhD research. I had undertaken a case study looking at the deployment of a multi-million dollar health information system throughout a hospital network.
Localization in Underwater Sensor Networks (Wireless Networks)
by Jing Yan Haiyan Zhao Yuan Meng Xinping GuanOcean covers 70.8% of the Earth’s surface, and it plays an important role in supporting all life on Earth. Nonetheless, more than 80% of the ocean’s volume remains unmapped, unobserved and unexplored. In this regard, Underwater Sensor Networks (USNs), which offer ubiquitous computation, efficient communication and reliable control, are emerging as a promising solution to understand and explore the ocean. In order to support the application of USNs, accurate position information from sensor nodes is required to correctly analyze and interpret the data sampled. However, the openness and weak communication characteristics of USNs make underwater localization much more challenging in comparison to terrestrial sensor networks.In this book, we focus on the localization problem in USNs, taking into account the unique characteristics of the underwater environment. This problem is of considerable importance, since fundamental guidance on the design and analysis of USN localization is very limited at present. To this end, we first introduce the network architecture of USNs and briefly review previous approaches to the localization of USNs. Then, the asynchronous clock, node mobility, stratification effect, privacy preserving and attack detection are considered respectively and corresponding localization schemes are developed. Lastly, the book’s rich implications provide guidance on the design of future USN localization schemes.The results in this book reveal from a system perspective that underwater localization accuracy is closely related to the communication protocol and optimization estimator. Researchers, scientists and engineers in the field of USNs can benefit greatly from this book, which provides a wealth of information, useful methods and practical algorithms to help understand and explore the ocean.
Localization in Wireless Networks: Foundations and Applications
by Jessica Feng Sanford Miodrag Potkonjak Sasha SlijepcevicIn a computational tour-de-force, this volume wipes away a host of problems related to location discovery in wireless ad-hoc sensor networks. WASNs have recognized potential in many applications that are location-dependent, yet are heavily constrained by factors such as cost and energy consumption. Their “ad-hoc” nature, with direct rather than mediated connections between a network of wireless devices, adds another layer of difficulty. Basing this work entirely on data-driven, coordinated algorithms, the author’s aim is to present location discovery techniques that are highly accurate—and which fit user criteria. The research deploys nonparametric statistical methods and relies on the concept of joint probability to construct error (including location error) models and environmental field models. It also addresses system issues such as the broadcast and scheduling of the beacon. Reporting an impressive accuracy gain of almost 17 percent, and organized in a clear, sequential manner, this book represents a stride forward in wireless localization.
Localized Quality of Service Routing for the Internet (The Springer International Series in Engineering and Computer Science #739)
by Srihari Nelakuditi Zhi-Li ZhangThe exponential growth of Internet brings to focus the need to control such large scale networks so that they appear as coherent, almost intelligent, organ isms. It is a challenge to regulate such a complex network of heterogeneous elements with dynamically changing traffic conditions. To make such a sys tem reliable and manageable, the decision making should be decentralized. It is desirable to find simple local rules and strategies that can produce coherent and purposeful global behavior. Furthermore, these control mechanisms must be adaptive to effectively respond to continually varying network conditions. Such adaptive, distributed, localized mechanisms would provide a scalable so lution for controlling large networks. The need for such schemes arises in a variety of settings. In this monograph, we focus on localized approach to quality of service routing. Routing in the current Internet focuses primarily on connectivity and typi cally supports only the "best-effort" datagram service. The routing protocols deployed such as OSPF use the shortest path only routing paradigm, where routing is optimized for a single metric such as hop count or administrative weight. While these protocols are well suited for traditional data applications such as ftp and telnet, they are not adequate for many emerging applications such as IP telephony, video on demand and teleconferencing, which require stringent delay and bandwidth guarantees. The "shortest paths" chosen for the "best effort" service may not have sufficient resources to provide the requisite service for these applications.
Locally Decodable Codes and Private Information Retrieval Schemes (Information Security and Cryptography)
by Sergey YekhaninLocally decodable codes (LDCs) are codes that simultaneously provide efficient random access retrieval and high noise resilience by allowing reliable reconstruction of an arbitrary bit of a message by looking at only a small number of randomly chosen codeword bits. Local decodability comes with a certain loss in terms of efficiency – specifically, locally decodable codes require longer codeword lengths than their classical counterparts. Private information retrieval (PIR) schemes are cryptographic protocols designed to safeguard the privacy of database users. They allow clients to retrieve records from public databases while completely hiding the identity of the retrieved records from database owners. In this book the author provides a fresh algebraic look at the theory of locally decodable codes and private information retrieval schemes, obtaining new families of each which have much better parameters than those of previously known constructions, and he also proves limitations of two server PIRs in a restricted setting that covers all currently known schemes. The author's related thesis won the ACM Dissertation Award in 2007, and this book includes some expanded sections and proofs, and notes on recent developments.
Locally Relevant ICT Research: 10th International Development Informatics Association Conference, IDIA 2018, Tshwane, South Africa, August 23-24, 2018, Revised Selected Papers (Communications in Computer and Information Science #933)
by Filistea Naude Marita Turpin Kirstin KraussThis book constitutes the refereed proceedings of the 10th International Development Informatics Association Conference, IDIA 2018, held in Tshwane, South Africa, in August 2018.The 20 revised full papers presented were carefully reviewed and selected from 61 submissions. The papers are organized in topical sections on ICT adoption and impact; mobile education; e-education; community development; design; innovation and maturity; data.
Locating, Classifying and Countering Agile Land Vehicles: With Applications to Command Architectures
by David D. Sworder John E. BoydThis book examines real-time target tracking and identification algorithms with a focus on tracking an agile target. The authors look at several problems in which the tradeoff of accuracy and confidence must be made. These issues are explored within the context of specific tracking scenarios chosen to illustrate the tradeoffs in a simple and direct manner. The text covers the Gaussian wavelet estimator (GWE) which has a flexible architecture that is able to fuse uncommon sensor combinations with non-temporal structural constraints.
Locating Eigenvalues in Graphs: Algorithms and Applications (SpringerBriefs in Mathematics)
by Carlos Hoppen David P. Jacobs Vilmar TrevisanThis book focuses on linear time eigenvalue location algorithms for graphs. This subject relates to spectral graph theory, a field that combines tools and concepts of linear algebra and combinatorics, with applications ranging from image processing and data analysis to molecular descriptors and random walks. It has attracted a lot of attention and has since emerged as an area on its own.Studies in spectral graph theory seek to determine properties of a graph through matrices associated with it. It turns out that eigenvalues and eigenvectors have surprisingly many connections with the structure of a graph. This book approaches this subject under the perspective of eigenvalue location algorithms. These are algorithms that, given a symmetric graph matrix M and a real interval I, return the number of eigenvalues of M that lie in I. Since the algorithms described here are typically very fast, they allow one to quickly approximate the value of any eigenvalue, which is a basic step in most applications of spectral graph theory. Moreover, these algorithms are convenient theoretical tools for proving bounds on eigenvalues and their multiplicities, which was quite useful to solve longstanding open problems in the area. This book brings these algorithms together, revealing how similar they are in spirit, and presents some of their main applications.This work can be of special interest to graduate students and researchers in spectral graph theory, and to any mathematician who wishes to know more about eigenvalues associated with graphs. It can also serve as a compact textbook for short courses on the topic.
Locating Emerging Media (Routledge Studies in New Media and Cyberculture)
by Ben Aslinger Edited by Germaine R. HalegouaLocating Emerging Media focuses on the tensions between the local and global in the design, distribution, and use of emerging media forms, building on scholarship on the cultural geography of new media networks and products and the relationships between the "global" and the "local." Authors consider new media practices, texts, services, software, policies, infrastructures, and design discourses that enrich existing relationships between creative industries and cultures of production, reception, and engagement. This consideration highlights the relationships between global and local perspectives and new media technologies and practices emerging within (and through) the geography and culture of particular places. Areas examined include East Asia, Latin America, Africa, Europe, South Asia, the Pacific Islands, and the Middle East. Through all is the recognition that what is new or emergent around the globe is unique in each locality.
Locating Emerging Media (Routledge Studies in New Media and Cyberculture)
by Ben Aslinger Germaine R. HalegouaLocating Emerging Media focuses on the tensions between the local and global in the design, distribution, and use of emerging media forms, building on scholarship on the cultural geography of new media networks and products and the relationships between the "global" and the "local." Authors consider new media practices, texts, services, software, policies, infrastructures, and design discourses that enrich existing relationships between creative industries and cultures of production, reception, and engagement. This consideration highlights the relationships between global and local perspectives and new media technologies and practices emerging within (and through) the geography and culture of particular places. Areas examined include East Asia, Latin America, Africa, Europe, South Asia, the Pacific Islands, and the Middle East. Through all is the recognition that what is new or emergent around the globe is unique in each locality.
Locating Lines and Hyperplanes: Theory and Algorithms (Applied Optimization #25)
by Anita SchöbelLine and hyperplane location problems play an important role not only in operations research and location theory, but also in computational geometry and robust statistics. This book provides a survey on line and hyperplane location combining analytical and geometrical methods. The major portion of the text presents new results on this topic, including the extension of some special cases to all distances derived from norms and a discussion of restricted problems in the plane. Almost all results are proven in the text and most of them are illustrated by examples. Furthermore, relations to classical facility location and to problems in computational geometry are pointed out. Audience: The book is suitable for researchers, lecturers, and graduate students working in the fields of location theory or computational geometry.
Location and Context Awareness: 4th International Symposium, LoCA 2009 Tokyo, Japan, May 7-8, 2009 Proceedings (Lecture Notes in Computer Science #5561)
by Tanzeem Choudhury Aaron Quigley Thomas Strang Koji SuginumaThese proceedings contain the papers presented at the 4th International S- posium on Location and Context Awareness (LoCA) during May 7–8, 2009 in Tokyo,Japan.Locationandcontextawarenessarefundamentstonext-generation mobile and pervasive computing systems. Pervasive computing is a model of computing in which computation is everywhere and computer functions are - tegrated into everything. The ultimate aim is to make information, applications and services available anywhere and at anytime in the human environment in a ?uid manner appropriate to our current context. Once away from the desktop, we ?nd ourselves in a wide variety of contexts and hence situations. For computing to be relevant and useful in these emerging situations we must rely on a range of contextual cues. Context includes phys- logical, environmental, and computational data, whether sensed or inferred. In addition, context includes details of a user’s activities, goals, abilities, pref- ences, a?ordances, and surroundings. With location and context awareness we can expect computers to deliver information, services, and entertainment in a way that maximizes convenience and minimizes intrusion.
Location- and Context-Awareness: Second International Workshop, LoCA 2006, Dublin, Ireland, May 10-11, 2006, Proceedings (Lecture Notes in Computer Science #3987)
by Mike Hazas John Krumm Thomas StrangThis book constitutes the refereed proceedings of the Second International Workshop on Location- and Context-Awareness, LoCA 2006, held in Dublin, Ireland, in May 2006. The 18 revised full papers presented were carefully selected during two rounds of reviewing and improvement from 74 submissions. The papers are organized in topical sections on location sensing, mapping, privacy and access, context sensing, social context, representation and programming.
Location- and Context-Awareness: Third International Symposium, LoCA 2007, Oberpfaffenhofen, Germany, September 20-21, 2007, Proceedings (Lecture Notes in Computer Science #4718)
by Jeffrey Hightower Bernt Schiele Thomas StrangThis book constitutes the refereed proceedings of the Third International Symposium on Location- and Context-Awareness, LoCA 2007, held in Oberpfaffenhofen, Germany, in September 2007. The papers are organized in topical sections on wifi location technology, activity and situational awareness, taxonomies, architectures, and in a broader perspective, the meaning of place, radio issue in location technology, and new approaches to location estimation.
Location- and Context-Awareness: First International Workshop, LoCA 2005, Oberpfaffenhofen, Germany, May 12-13, 2005, Proceedings (Lecture Notes in Computer Science #3479)
by Thomas Strang Claudia Linnhoff-PopienContext-awareness is one of the drivers of the ubiquitous computing paradigm. Well-designed context modeling and context retrieval approaches are key p- requisites in any context-aware system. Location is one of the primary aspects of all major context models — together with time, identity and activity. From the technical side, sensing, fusing and distributing location and other context information is as important as providing context-awareness to applications and services in pervasive systems. Thematerialsummarizedinthisvolumewasselectedforthe1stInternational Workshop on Location- and Context-Awareness (LoCA 2005) held in coope- tion with the 3rd International Conference on Pervasive Computing 2005. The workshop was organized by the Institute of Communications and Navigation of the German Aerospace Center (DLR) in Oberpfa?enhofen, and the Mobile and Distributed Systems Group of the University of Munich. During the workshop, novel positioning algorithms and location sensing te- niques were discussed, comprising not only enhancements of singular systems, like positioning in GSM or WLAN, but also hybrid technologies, such as the integration of global satellite systems with inertial positioning. Furthermore, - provements in sensor technology, as well as the integration and fusion of sensors, were addressed both on a theoretical and on an implementation level. Personal and con?dential data, such as location data of users, have p- found implications for personal information privacy. Thus privacy protection, privacy-oriented location-aware systems, and how privacy a?ects the feasibility and usefulness of systems were also addressed in the workshop.
Location Awareness in the Age of Google Maps
by Rebecca NooneLocation Awareness in the Age of Google Maps explores the mundane act of navigating cities in the age of digital mapping infrastructures.Noone follows the frictions routing through Google Maps’ categorising and classifying of spatial information. Complicating the assumption that digital maps distort a sense of direction, Noone argues that Google Maps’ location awareness does more than just organise and orient a representation of space—it also organises and orients imaginaries of publicness, selfsufficiency, legibility, and error. At the same time, Location Awareness in the Age of Google Maps helps to animate the ordinary ways people are challenging and refusing Google Maps’ vision of the world. Drawing on an arts-based field study spanning the streets of London, New York, London, Toronto, and Amsterdam, Noone’s encounters of "asking for directions" open up lines of inquiry and spatial scores that cut through Google‘s universal mapping project.Location Awareness in the Age of Google Maps will be essential reading for information studies and media studies scholars and students with an interest in embodied information practices, critical information studies, and critical data studies. The book will also appeal to an urban studies audience engaged in work on the digital city and the datafication of urban environments.
Location Awareness in the Age of Google Maps
by Rebecca NooneLocation Awareness in the Age of Google Maps explores the mundane act of navigating cities in the age of digital mapping infrastructures.Noone follows the frictions routing through Google Maps’ categorising and classifying of spatial information. Complicating the assumption that digital maps distort a sense of direction, Noone argues that Google Maps’ location awareness does more than just organise and orient a representation of space—it also organises and orients imaginaries of publicness, selfsufficiency, legibility, and error. At the same time, Location Awareness in the Age of Google Maps helps to animate the ordinary ways people are challenging and refusing Google Maps’ vision of the world. Drawing on an arts-based field study spanning the streets of London, New York, London, Toronto, and Amsterdam, Noone’s encounters of "asking for directions" open up lines of inquiry and spatial scores that cut through Google‘s universal mapping project.Location Awareness in the Age of Google Maps will be essential reading for information studies and media studies scholars and students with an interest in embodied information practices, critical information studies, and critical data studies. The book will also appeal to an urban studies audience engaged in work on the digital city and the datafication of urban environments.
Location-Based Gaming: Play in Public Space
by Dale LeorkeLocation-based games emerged in the early 2000s following the commercialisation of GPS and artistic experimentation with ‘locative media’ technologies. Location-based games are played in everyday public spaces using GPS and networked, mobile technologies to track their players’ location. This book traces the evolution of location-based gaming, from its emergence as a marginal practice to its recent popularisation through smartphone apps like Pokémon Go and its incorporation into ‘smart city’ strategies. Drawing on this history and an analysis of the scholarly and mainstream literature on location-based games, Leorke unpacks the key claims made about them. These claims position location-based games as alternately enriching or diminishing their players’ engagement with the people and places they encounter through the game. Through rich case studies and interviews with location-based game designers and players, Leorke tests out and challenges these celebratory and pessimistic discourses. He argues for a more grounded approach to researching location-based games and their impact on public space that reflects the ideologies, lived experiences, and institutional imperatives that circulate around their design and performance. By situating location-based games within broader debates about the role of play and digitisation in public life, Location-Based Gaming offers an original and timely account of location-based gaming and its growing prominence.
Location-Based Gaming: Play in Public Space
by Dale LeorkeLocation-based games emerged in the early 2000s following the commercialisation of GPS and artistic experimentation with ‘locative media’ technologies. Location-based games are played in everyday public spaces using GPS and networked, mobile technologies to track their players’ location. This book traces the evolution of location-based gaming, from its emergence as a marginal practice to its recent popularisation through smartphone apps like Pokémon Go and its incorporation into ‘smart city’ strategies. Drawing on this history and an analysis of the scholarly and mainstream literature on location-based games, Leorke unpacks the key claims made about them. These claims position location-based games as alternately enriching or diminishing their players’ engagement with the people and places they encounter through the game. Through rich case studies and interviews with location-based game designers and players, Leorke tests out and challenges these celebratory and pessimistic discourses. He argues for a more grounded approach to researching location-based games and their impact on public space that reflects the ideologies, lived experiences, and institutional imperatives that circulate around their design and performance. By situating location-based games within broader debates about the role of play and digitisation in public life, Location-Based Gaming offers an original and timely account of location-based gaming and its growing prominence.
Location-Based Mobile Games: Design Perspectives (SpringerBriefs in Applied Sciences and Technology)
by Davide Spallazzo Ilaria MarianiThis book approaches Location Based Mobile Games from a design perspective, investigating the peculiar traits that make them compelling contemporary practices and challenging fields of investigation. Relying on an interdisciplinary theoretical background and empirical studies, it delves into LBMGs’ intertwining theoretical assumptions and describes their translation into practice. The authors examine these games from different perspectives, exploring how they can impact the way we look at our surroundings, their influence on our social dimension, their ability to translate a wide range of information into a game experience, and the negotiations they activate by intertwining two realities. Each issue is addressed from a twofold perspective: that of the designers who craft the games, and that of the users who interpret the designers’ choices and take part in the game experience. In so doing, the book covers the relationship between processes of designing and playing, investigating games that communicate through meaningful interactions, share perspectives as forms of narratives, and integrate physicality and surroundings in the play activity. The reasoning advanced throughout the chapters will benefit researchers, designers and entrepreneurs in the field, as it provides a novel perspective on LBMGs, seeks to increase designers’ awareness of often-neglected issues, and suggests interpretations and practices that can impact how commercial games are designed.
Location-Based Services (The Morgan Kaufmann Series in Data Management Systems)
by Jochen Schiller Agnès VoisardLocation-based services (LBS) are a new concept integrating a user's geographic location with the general notion of services, such as dialing an emergency number from a cell phone or using a navigation system in a car. Incorporating both mobile communication and spatial data, these applications represent a novel challenge both conceptually and technically. The purpose of this book is to describe, in an accessible fashion, the various concepts underlying mobile location-based services. These range from general application-related ideas to technical aspects. Each chapter starts with a high level of abstraction and drills down to the technical details. Contributors examine each application from all necessary perspectives, namely, requirements, services, data, and scalability. An illustrative example begins early in the book and runs throughout, serving as a reference.· This book defines the LBS field and identifies its capabilities, challenges, and technologies.· The contributors are recognized experts from academia and industry.· Coverage includes navigation systems, middleware, interoperability, standards, and mobile communications.· A sample application, the "find-friend" application, is used throughout the book to integrate the concepts discussed in each chapter.
Location Based Services and TeleCartography (Lecture Notes in Geoinformation and Cartography)
by Georg Gartner William Cartwright Michael P. PetersonThis book provides for the first time a general overview of research activities related to location and map-based services. These activities have emerged over the last years, especially around issues of positioning, spatial modelling, cartographic communication as well as in the fields of ubiquitious cartography, geo-pervasive services, user-centered modelling and geo-wiki activities. The innovative and contemporary character of these topics has lead to a great variety of interdisciplinary contributions, from academia to business, from computer science to geodesy. Topics cover an enormous range with heterogenous relationships to the main book issues. Whilst contemporary cartography aims at looking at new and efficient ways for communicating spatial information the development and availability of technologies like mobile networking, mobile devices or short-range sensors lead to interesting new possibilities for achieving this aim. By trying to make use of available technologies, cartography and a variety of related disciplines look specifically at user-centered and conte- aware system development, as well as new forms of supporting wayfinding and navigation systems. Contributions are provided in five main sections and they cover all of these aspects and give a picture of the new and expanding field of Location Based Services and TeleCartography. Georg Gartner, Vienna, Austria William Cartwright, Melbourne, Australia Michael Peterson, Omaha, USA Table of Contents Georg Gartner LBS and TeleCartography: About the book. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 A series of Symposiums on LBS and TeleCartography. . . . . . . . . . . . . . . . . . . . . . 1 2 Progression of Research . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 1 Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2. 2 Elements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Structure of the book . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Location-Based Services Handbook: Applications, Technologies, and Security
by Syed A. Ahson Mohammad IlyasLocation-Based Services Handbook: Applications, Technologies, and Security is a comprehensive reference containing all aspects of essential technical information on location-based services (LBS) technology. With broad coverage ranging from basic concepts to research-grade material, it presents a much-needed overview of technologies for positioning and localizing, including range- and proximity-based localization methods, and environment-based location estimation methods. Featuring valuable contributions from field experts around the world, this book addresses existing and future directions of LBS technology, exploring how it can be used to optimize resource allocation and improve cooperation in wireless networks. It is a self-contained, comprehensive resource that presents: A detailed description of the wireless location positioning technology used in LBS Coverage of the privacy and protection procedure for cellular networks—and its shortcomings An assessment of threats presented when location information is divulged to unauthorized parties Important IP Multimedia Subsystem and IMS-based presence service proposals The demand for navigation services is predicted to rise by a combined annual growth rate of more than 104 percent between 2008 and 2012, and many of these applications require efficient and highly scalable system architecture and system services to support dissemination of location-dependent resources and information to a large and growing number of mobile users. This book offers tools to aid in determining the optimal distance measurement system for a given situation by assessing factors including complexity, accuracy, and environment. It provides an extensive survey of existing literature and proposes a novel, widely applicable, and highly scalable architecture solution. Organized into three major sections—applications, technologies, and security—this material fully covers various location-based applications and the impact they will have on the future.
Location-Based Services Handbook: Applications, Technologies, and Security
by Syed A. Ahson and Mohammad IlyasLocation-Based Services Handbook: Applications, Technologies, and Security is a comprehensive reference containing all aspects of essential technical information on location-based services (LBS) technology. With broad coverage ranging from basic concepts to research-grade material, it presents a much-needed overview of technologies for positioning and localizing, including range- and proximity-based localization methods, and environment-based location estimation methods. Featuring valuable contributions from field experts around the world, this book addresses existing and future directions of LBS technology, exploring how it can be used to optimize resource allocation and improve cooperation in wireless networks. It is a self-contained, comprehensive resource that presents: A detailed description of the wireless location positioning technology used in LBS Coverage of the privacy and protection procedure for cellular networks—and its shortcomings An assessment of threats presented when location information is divulged to unauthorized parties Important IP Multimedia Subsystem and IMS-based presence service proposals The demand for navigation services is predicted to rise by a combined annual growth rate of more than 104 percent between 2008 and 2012, and many of these applications require efficient and highly scalable system architecture and system services to support dissemination of location-dependent resources and information to a large and growing number of mobile users. This book offers tools to aid in determining the optimal distance measurement system for a given situation by assessing factors including complexity, accuracy, and environment. It provides an extensive survey of existing literature and proposes a novel, widely applicable, and highly scalable architecture solution. Organized into three major sections—applications, technologies, and security—this material fully covers various location-based applications and the impact they will have on the future.