Internet of Things From Hype to Reality

The Internet of Things (IoT) has gained significant mindshare, let alone attention, in academia and the industry especially over the past few years. The reasons behind this interest are the potential capabilities that IoT promises to offer. On the personal level, it paints a picture of a future world where all the things in our ambient environment are connected to the Internet and seamlessly communicate with each other to operate intelligently. The ultimate goal is to enable objects around us to efficiently sense our surroundings, inexpensively communicate, and ultimately create a better environment for us: one where everyday objects act based on what we need and like without explicit instructions

Architectures pour la mobilité et la qualité de service dans les systèmse satellites DVB-S2/RCS

Nos travaux de thèse ont pour objectif la conception, la mise en œuvre et l'évaluation d'architectures pour la mobilité et la qualité de service (QoS) dans des systèmes satellites DVB-S2/RCS. Ces systèmes peuvent constituer une solution alternative efficace aux réseaux terrestres dans des zones reculées à faible densité de population mais ils doivent pour cela offrir les mêmes services tout en tenant compte de leurs caractéristiques spécifiques, en particulier leur long délai de transmission qui peut s'avérer problématique dans le cadre d'applications multimédias interactives. Notre première contribution a donc été de développer une architecture de QoS adaptée à ce type d'applications, utilisant le modèle DiffServ et se basant essentiellement sur l'interaction entre l'architecture liée au protocole d'initiation de session SIP et différentes entités du système satellite. La QoS peut alors être configurée de façon précise au niveau des STs, par le biais de l'outil TC, en analysant les descripteurs de session SDP compris dans les messages SIP et en déduisant leurs caractéristiques (débit, gigue max, délai max, etc...) soit localement si elles sont connues, soit à partir d'un service Web que nous avons développé. Nous avons ensuite proposé et développé une solution de mobilité basée sur SIP, adaptée au système satellite ainsi qu'à la solution de QoS précédemment décrite. Les performances de cette solution ont alors été comparées, en termes de temps d'interruption et de consommation de ressources, avec celles obtenues par Mobile IPv6 et certaines de ses extensions, démontrant ainsi de réelles améliorations pour le cas des applications multimédias interactives. Enfin, notre dernière contribution a été de développer deux architectures couplant QoS et mobilité, une spécifiquement conçue pour les applications interactives et basée sur la combinaison de notre solution de mobilité SIP avec notre architecture de QoS SIP et une autre basée sur Mobile IPv6 ou FMIPv6 et sur l'interaction d'un QoS Agent mobile avec les entités de QoS du système satellite. Ces architectures ont été évaluées et comparées sur la plateforme d'émulation PLATINE développée dans le cadre du projet SATSIX.Our thesis work aims at the design, the implementation and the evaluation of architectures for mobility and quality of service (QoS) in DVB-S2/RCS satellite systems. These systems can be an effective alternative to terrestrial networks in remote and sparsely populated areas but, for that, they have to offer the same services while taking into account their specific characteristics, particularly their long transmission delay that can be problematic in the context of interactive multimedia applications. Our first contribution has been to develop a QoS architecture adapted to such applications, using the DiffServ model and relying heavily on the interaction between the architecture related to the Session Initiation Protocol (SIP) and various entities of the satellite system. The QoS of satellite terminals (STs) can then be configured precisely, by using the TC tool and analyzing the SDP session descriptors included in the SIP messages and deducting their characteristics (throughput, jitter max, delay max, etc. ...) either locally, if they are known, or from a Web service that we have developed. We then proposed and developed a mobility solution based on SIP, adapted to the satellite system and to the QoS solution described above. The performances of this solution were compared in terms of handover time and resources consumption, with those obtained by Mobile IPv6 and some of its extensions, showing real improvements in the case of interactive multimedia applications. Finally, our last contribution was to develop two architectures combining QoS and mobility: the first one is specifically designed for interactive applications and based on the combination of our SIP-based mobility solution with our SIP QoS architecture and the another is based on Mobile IPv6 or FMIPv6 for the mobility part and on the interaction of a mobile QoS agent with QoS entities of the satellite system. These architectures have been evaluated and compared on the emulation platform PLATINE developed under the project SATSIX

Pro Web 2.0 Mashups: Remixing Data and Web Services

XXXIII, 603 p. ; 24 cmLibro ElectrónicoEn cub.: Remix the Web to create cutting-edge web applicationsHow many times have you seen a web site and said, “This would be exactly what I wanted— if only . . .” If only you could combine the statistics here with data from your company’s earnings projections. If only you could take the addresses for those restaurants and plot them on one map. How often have you entered the date of a concert into your calendar with a single click instead of retyping? How often do you wish that you could make all the different parts of your digital world—your e-mail, your word processor documents, your photos, your search results, your maps, your presentations—work together more seamlessly? After all, it’s all digital and malleable information—shouldn’t it all just fit together? In fact, below the surface, all the data, web sites, and applications you use could fit together. This book teaches you how to forge those latent connections—to make the Web your own—by remixing information to create your own mashups. A mashup, in the words of the Wikipedia, is a web site or web application “that seamlessly combines content from more than one source into an integrated experience.”1 Learning how to draw content from the Web together into new integrated interfaces and applications, whether for yourself or for other others, is the central concern of this book.¿Cuántas veces ha visto usted a un sitio web y le dijo: "Esto sería exactamente lo que quería- si sólo. . . "Si sólo pudiera combinar las estadísticas aquí con los datos de las ganancias de su empresa proyecciones. Si tan sólo pudiera tener las direcciones de los restaurantes y colócalas en una mapa. ¿Cuántas veces has entrado en la fecha de un concierto en su calendario con un solo clic en lugar de volver a escribir? ¿Con qué frecuencia desea que usted podría hacer todas las diferentes partes de su mundo digital, el correo electrónico, los documentos procesador de textos, fotos, resultados de la búsqueda, sus mapas, sus presentaciones, trabajar juntos con mayor perfección? Después de todo, todo es digital y maleable que la información shouldn't a sólo encajan entre sí? De hecho, debajo de la superficie, todos los datos, sitios web, y aplicaciones que utiliza podría encajar. Este libro te enseña a forjar esas conexiones latentes a hacer de la web su propio por información remezcla para crear su propia mashups. Un mashup, en palabras de la Wikipedia, es un sitio web o aplicación web "que combina a la perfección el contenido de más de una fuente en una experiencia integrada. "1 Aprender a dibujar el contenido de la Web junto a nuevos interfaces integradas y aplicaciones, ya sea para usted o para otros, es el centro de preocupación de este libro.The modern Web is awash with data and services just waiting to be used, but how do you make effective use of all this information? The answer lies in APIs (such as Google Maps, Flickr, and Amazon Web Services) and remixing, or mashups. "Pro Web 2.0 Mashups: Remixing Data and Web Services" teaches you everything you need to create useful, dynamic real-world applications using APIs, web services, Ajax, web standards, and server-side languages. All you need to make full use of this book is basic knowledge of HTML, CSS, and JavaScript, and at least one server-side language (such as PHP or ASP.NET). Highlights include the following: Looks at the overall shape of todays Web from a developers point of view--what are its main features, and what is available for us to use to develop applications? Contains real-world examples of creating mashups using all the major APIs. Contains examples written in multiple server-side languages. What you'll learn Understand how the constituent parts of the modern Web fit together--web standards, Ajax, APIs, libraries, tagging, blogs, wikis, and more. Create different types of mashup, for example mapping mashups, search functionality, calendars, RSS/Atom feeds, social bookmarking, online storage systems, open document formats, and more. Build Web 2.0 applications using HTML, CSS, JavaScript, Ajax, server-side languages, APIs, and libraries Who is this book for? This book is for any web developer who is already comfortable with HTML, CSS, JavaScript, and at least one server-side language and wants to learn how to create Web 2.0 applications. About the Apress Pro Series The Apress Pro series books are practical, professionaltutorials to keep you on and moving up the professional ladder. You have gotten the job, now you need to hone your skills in these tough competitive times. The Apress Pro series expands your skills and expertise in exactly the areas you need. Master the content of a Pro book, and you will always be able to get the job done in a professional development project. Written by experts in their field, Pro series books from Apress give you the hard-won solutions to problems you will face in your professional programming career. Related Titles Beginning Google Maps Applications with PHP and Ajax: From Novice to Professional Beginning Google Maps Applications with Rails and Ajax: From Novice to Professional Building Flickr Applications with PHP Pro DOM Scripting with Ajax, APIs and Libraries Pro Ajax and the .NET 2.0 Platform Pro Ajax and Java Frameworks.About the Author xxi About the Technical Reviewer xxiii Acknowledgments xxv Introduction xxvii PART 1 Remixing Information Without Programming CHAPTER 1 Learning from Specific Mashups 3 Looking for Patterns in Mashups 3 Housingmaps.com5 What Is Being Combined? 5 Why Are the Constituent Elements Being Combined? What’s the Problem Being Solved? 5 Where Is the Remixing Happening? 6 How Are These Elements Being Combined? 6 Comparable Mashups 7 Google Maps in Flickr 7 What Is Being Combined? 8 Why Are the Constituent Elements Being Combined? What’s the Problem Being Solved? 8 How Are These Elements Being Combined? 12 Comparable Mashups 13 LibraryLookup Bookmarklet13 Configuring a LibraryLookup Bookmarklet 14 Invoking the LibraryLookup Bookmarklet 15 How Does This Mashup Work? 16 How Can This Mashup Be Extended?17 Comparable Mashups 18 Tracking Other Mashups 18 Summary 18 vii CHAPTER 2 Uncovering the Mashup Potential of Web Sites 21 What Makes Web Sites and Applications Mashable 22 Ascertaining the Fundamental Entities of the Web Site22 Public APIs and Existing Mashups 23 Use of Ajax 24 Embedded Scriptability 24 Browser Plug-Ins 25 Getting Data In and Out of the Web Site 25 The Community of Users and Developers 25 Mobile and Alternative Interfaces and the Skinnability of the Web Site 26 Documentation 26 Is the Web Site Run on Open Source? 26 Intellectual Property, Reusability, and Creative Commons 26 Tagging, Feeds, and Weblogging27 URL Languages of Web Sites27 Some Mashups Briefly Revisited 28 Flickr: The Fundamentally Mashup-Friendly Site 29 Resources in Flickr 29 Users and Photos 30 Data Associated with an Individual Photo 33 Tags 34 User’s Archive: Browsing Photos by Date 36 Sets 37 Collections37 Favorites 37 A User’s Popular Photos 38 Contacts 38 Groups 38 Account Management40 Browsing Through Flickr40 Search 41 Geotagged Photos in Flickr 42 The Flickr Organizer 43 Recent Activities44 Mailing Interfaces 44 Interfacing to Weblogs 44 Syndication Feeds: RSS and Atom 45 Mobile Access45 Third-Party Flickr Apps 45 viii CONTENTS Creative Commons Licensing 46 Cameras 46 The Mashup-by-URL-Templating-and-Embedding Pattern 47 Google Maps 49 URL Language of Google Maps 49 Viewing KML Files in Google Maps51 Connecting Yahoo! Pipes and Google Maps 51 Other Simple Applications of the Google Maps URL Language 52 Amazon 53 Amazon Items53 Lists 55 Tags 55 Subject Headings 55 del.icio.us 56 Screen-Scraping and Bots 58 Summary 60 CHAPTER 3 Understanding Tagging and Folksonomies61 Tagging in Flickr 62 Tags in Flickr 63 How Tags Are Used in Practice 63 Creating Your Own Tags 64 Syntax of Tags in Flickr 64 Potential Weaknesses of Tags 65 Singular and Plural Forms of Tags in Flickr 65 Hacking the Tagging System: Geotagging and Machine Tags 66 Interesting Apps Using Flickr Tags 67 Tagging in del.icio.us 67 Mechanics of Adding Tags in del.icio.us 68 Dealing with Case and Multiword Phrases 68 Getting More Information 69 Gathering Content Through Tags in Technorati71 Searching Technorati with Tags71 How Technorati Finds Tags on the Web 72 Word Inflections and Syntactic Constraints in Technorati Tags 72 Using Tags to Mash Up Flickr and del.icio.us 72 Other Systems That Use Tagging 73 Relationship of Tags to Formal Classification Schemes 73 Summary 75 CONTENTS ix CHAPTER 4 Working with Feeds, RSS, and Atom77 What Are Feeds, and Why Are They Important? 78 RSS 2.0 78 RSS 1.0 80 Atom 1.0 82 Extensions to RSS 2.0 and Atom 1.0 84 Feeds from Flickr86 Flickr Feed Parameters 86 Examining the Flickr Feeds 87 Exchange Formats Other Than RSS and Atom 90 Feeds from Other Web Sites 92 Finding Feeds and Feed Autodiscovery 93 Feeds from Weblogs 94 Wikipedia Feeds94 Google and Yahoo! News 95 News Aggregators: Showing Flickr Feeds Elsewhere 96 Validating Feeds98 Scraping Feeds Using GUI Tools 98 Remixing Feeds with Feedburner 99 Remixing Feeds with Yahoo! Pipes 100 A Simple First Pipe with Yahoo! News 101 Google News and Refactoring Pipes102 Wikinews and NY Times: Filtering Feeds 103 Pulling the Feeds Together 104 Summary 104 CHAPTER 5 Integrating with Blogs 105 Integration Scenarios for Blogs 105 Sending Flickr Pictures to Blogs 106 Configuring Flickr for Integration with Blogs107 Blogging a Flickr Picture110 How Does the Flickr Blog Integration Work?110 Desktop Blogging Tools 111 Combining Feeds and Blogging to Generate Feedback Flows113 Flock: Bringing Together Blogs and Flickr 114 RSD: Discoverability of Blog APIs 115 Linkbacks 116 Wiki Integration at an Early Stage 116 Summary 117 x CONTENTS PART 2 Remixing a Single Web Application Using Its API CHAPTER 6 Learning Web Services APIs Through Flickr 121 An Introduction to the Flickr API 122 What Does This XML Response Mean? 124 What Can You Do with the XML Response? 126 API Documentation, Community, and Policy 128 Terms of Use for the API 128 Using the Flickr API Explorer and Documentation 129 Calling a Basic Flickr API Method from PHP 132 HTTP Clients 133 A Refresher on HTTP 134 XML Processing 138 Pulling It All Together: Generating Simple HTML Representations of the Photos 143 Where Does This Leave Us?145 The Flickr API in General 145 Using flickr.reflection Methods 146 Querying the Flickr Reflection Methods with PHP 149 Request and Response Formats 154 Flickr Authorization 156 Why Passing Passwords Around Doesn’t Work Too Well157 Authorization for Web Apps 157 Using Flickr API Kits 165 PEAR::Flickr_API 165 phpFlickr 166 Phlickr 168 Limitations of the Flickr API 169 Summary 170 CHAPTER 7 Exploring Other Web APIs 171 XML-RPC172 What’s Happening on the Wire? 176 Using Wireshark and curl to Analyze and Formulate HTTP Messages 177 Parsing XML-RPC Traffic178 CONTENTS xi SOAP 181 The Dream: Plug-and-Go Functionality Through WSDL and SOAP 181 geocoder.us 182 Amazon ECS 191 The Flickr API via SOAP195 Learning About Specific Web APIs 195 Programmableweb.com 196 YouTube 198 GData and the Blogger API 199 Using the Blogger API As a Uniform Interface Based on HTTP Methods203 Summary 204 CHAPTER 8 Learning Ajax/JavaScript Widgets and Their APIs 205 What You Need to Know206 What Difference Does Ajax Make? 207 Learning Firebug, DOM Inspector, and JavaScript Shell 208 Using the DOM Inspector 208 Using the Firebug Extension for Firefox 208 Using the JavaScript Shell 210 Working with JavaScript Libraries 210 YUI Widgets211 Using the YUI Calendar 211 Installing YUI on Your Host 212 Learning Google Maps 213 Accessing Flickr via JavaScript217 Using Greasemonkey to Access New York Times Permalinks 220 Learning More About JavaScript and Ajax 223 Summary 223 PART 3 Making Mashups CHAPTER 9 Moving from APIs and Remixable Elements to Mashups 227 Getting Oriented to ProgrammableWeb 228 User-Generated Data in ProgrammableWeb 228 Can Any Directory of Mashups Keep Up? 228 Learning About the Overall Mashup Scene 229 xii CONTENTS Directory of Mashups 230 Using Feeds to Track Mashups 230 Using Tags to Describe Mashups 231 API and Mashup Verticals 233 Looking at a Specific Mashup Profile233 Going from a Specific API to Mashups234 Sample Problems to Solve Using Mashups235 Tracking Interesting Books235 Knowing When to Buy Airplane Tickets 239 Finding That Dream House240 Mapping Breaking News 241 Summary 242 CHAPTER 10 Creating Mashups of Several Services 243 The Design 244 Background: Geotagging in Flickr245 Background: XMLHttpRequest and Containing Libraries 248 Using XMLHttpRequest Directly248 Using the YUI Connection Manager250 Building a Server-Side Proxy253 What Happens with XHR and Direct API Calls?253 Building a Server-Side Script for Geolocated Photos255 Building a Simple Client-Side Frame 257 Reading and Writing Elements257 Handling Simple Events to Connect Form Input and Display Calculations 260 Hooking the Client-Side Framework to Flickr 261 Writing a URL for Querying flickrgeo.php 262 Using XHR via the YUI Connection Manager to Read the JSON 262 Converting the JSON to HTML 264 Mashing Up Google Maps API with Flickr 266 Setting Up a Basic Google Map 267 Making the Map Respond to Changes in the Viewport of the Map268 Bringing Together the Flickr and GMap Code 269 Wiring Up the Bounding Box of the Google Map270 Making the Pictures Show Up in the Map 272 Google Mapplet That Shows Flickr Photos 277 Summary 281 CONTENTS xiii CHAPTER 11 Using Tools to Create Mashups 283 The Problem Mashup Tools Solve284 What You Are Making in This Chapter 284 Making the Mashup: A Step-by-Step Example286 Familiarizing Yourself with the Google Mashup Editor287 Reading and Displaying a Feed (Simple Template) 288 Introducing a Custom Template289 Using Yahoo! Pipes to Access Flickr 291 Displaying Flickr Photos Using 292 Adding JavaScript to the Mashup 294 How to Persist Feeds and Use Tabs 299 The Final Product: Showing the Saved Entries on a Map 304 Analysis of Trade-Offs in Using GME and Yahoo! Pipes309 Other Mashup Tools 310 Summary 311 CHAPTER 12 Making Your Web Site Mashable313 Why Make Your Web Site Mashable? 314 Using Techniques That Do Not Depend on APIs 314 Use a Consistent and Rich URL Language314 Use W3C Standards to Develop Your Web Site 315 Pay Attention to Web Accessibility315 Consider Allowing Users to Tag Your Content 315 Make Feeds Available 315 Make It Easy to Post Your Content to Blogs and Other Web Sites 316 Encourage the Sharing of Content with Explicit Licenses317 Develop Extensive Import and Export Options for User Content 317 Study How Users Remix Your Content and Make It Easier to Do So 317 Creating a Mashup-Friendly API 317 Learn From and Emulate Other APIs318 Keep in Mind Your Audiences for the API 318 Make Your API Easy to Learn 318 Test the Usability of Your API 319 Build a Granular, Loosely Coupled Architecture So That Creating an API Serves You As Much As It Does Others319 Embrace REST But Also Support SOAP and XML-RPC If You Can 320 xiv CONTENTS Consider Using the Atom Publishing Protocol As a Specific Instantiation of REST 320 Encourage the Development of API Kits: Third Party or In-House320 Support Extensive Error Reporting in Your APIs 321 Accept Multiple Formats for Output and Input 321 Support UI Functionality in the API 321 Include a Search API for Your Own Site 321 Version Your API 322 Foster a Community of Developers322 Don’t Try to Be Too Controlling in Your API322 Consider Producing a Service-Level Agreement (SLA) 322 Help API Users Consume Your Resources Wisely 323 Consider Open Sourcing Your Application 323 Easy-to-Understand Data Standards 323 Summary 324 PART 4 Exploring Other Mashup Topics CHAPTER 13 Remixing Online Maps and 3D Digital Globes327 The Number of Online Maps 328 Examples of Map-Based Mashups329 Making Maps Without Programming 329 Mapbuilder.net 329 Google My Maps 331 A Mashup Opportunity: Mapping Yahoo! Local Collections332 Transforming the Yahoo! Local XML into CSV for Mapbuilder.net 334 Collection Building in Microsoft’s Live Search Maps 336 Summary of Making Maps Without Programming 338 Data Exchange Formats 338 CSV338 Microformats and Metatags for HTML 338 GeoRSS 339 Yahoo!’s Use of GeoRSS and Yahoo! YMaps Extensions 341 KML 345 Interoperability Among Formats: GeoRSS vsKML346 CONTENTS xv Creating Maps by API Programming 346 Google Maps API 347 Yahoo! Maps API351 Microsoft’s Live Search Maps/Virtual Earth354 Geocoding356 Yahoo! Maps 356 Geocoder.us 357 Google Geocoder 358 Virtual Earth 361 Geocoding Non-U.SAddresses363 Google Earth and KML 364 Displaying and Handling KML As End Users 364 KML 368 Programming Google Earth via COM and AppleScript374 Mapstraction and OpenLayers 376 An Integrative Example: Showing Flickr Pictures in Google Earth376 KML NetworkLink 379 Generating the KML for the Photos382 The flickrgeo.php Code383 Summary 393 CHAPTER 14 Exploring Social Bookmarking and Bibliographic Systems 395 The Social Bookmarking Scene 396 Using Programmableweb.com to Examine the Popularity of APIs 396 del.icio.us 397 Using the del.icio.us API 398 Third-Party Tools for del.icio.us405 Third-Party API Kits 405 Yahoo! Bookmarks and MyWeb407 Connotea408 A Flickr and del.icio.us Mashup 412 Summary 416 CHAPTER 15 Accessing Online Calendars and Event Aggregators 417 Google Calendar 418 Setting Up Google Calendar As an End User 418 Exploring the Feed Formats from Google Calendar 420 xvi CONTENTS Using the GData-Based Calendar API Directly 426 Using the PHP API Kit for Google Calendar 434 Using the Python API Kit for Google Calendar 437 30boxes.com 438 An End User Tutorial 439 30boxes.com API 439 Event Aggregators 443 Upcoming.yahoo.com 443 Eventful.com452 Programming with iCalendar 458 Python and iCalendar 458 PHP and iCalendar 460 Exporting an Events Calendar to iCalendar and Google Calendar461 The Source: UC Berkeley Event Calendars 462 Creating an iCalendar Feed of Critic’s Choice Using Python462 Writing the Events to Google Calendar464 Summary 471 CHAPTER 16 Using Online Storage Services 473 Introducing Amazon S3 473 Rationale for S3 474 Conceptual Structure of Amazon S3 475 The Firefox S3 Extension Gets You Started with S3476 Using the S3 REST Interface 477 Listing Buckets Using the REST Interface 480 Using the SOAP Interface to S3481 Amazon S3 API Kits 482 PHP 483 Python 484 Summary 486 CHAPTER 17 Mashing Up Desktop and Web-Based Office Suites 487 Mashup Scenarios for Office Suites 487 The World of Document Markup 488 The OpenDocument Format488 Learning Basic ODF Tags 497 Create an ODF Text Document Without Any Styling of ODF Elements 499 Setting the Paragraph Text to text-body 503 CONTENTS xvii Formatting Lists to Distinguish Between Ordered and Unordered Lists504 Getting Bold, Italics, Font Changes, and Color Changes into Text Spans 505 API Kits for Working with ODF 507 Odfpy 507 OpenDocumentPHP 516 Leveraging OO.o to Generate ODF 518 ECMA Office Open XML (OOXML) 519 Viewers/Validators for OOXML522 Comparing ODF and OOXML 522 Online Office Suites523 Usage Scenarios for Programmable Online Spreadsheets 523 Google Spreadsheets API 524 Python API Kit 524 Mashup: Amazon Wishlist and Google Spreadsheets Mashup528 Zend PHP API Kit for Google Spreadsheets 533 A Final Variation: Amazon Wishlist to Microsoft Excel via COM 535 Zoho APIs 536 Summary 536 CHAPTER 18 Using Microformats and RDFa As Embeddable Data Formats537 Using Operator to Learn About Microformats 537 adr (Addresses) 540 hCard (Contacts) 541 hCalendar (Events)542 geo (Locations)543 tag (Tagspaces) 543 Definitions and Design Goals of Microformats 543 Microformats Design Patterns545 rel-design-pattern 545 class-design-pattern 545 abbr-design-pattern 546 include-pattern546 Examples of Microformats 547 rel-license 547 rel-tag 548 xfn548 xviii CONTENTS xFolk549 geo 549 hCard and adr550 hCalendar 551 Other Microformats 551 Microformats in Practice 552 Programming with Microformats 552 Language-Specific Libraries 552 Writing an Operator Script 553 Studying the Tutorial Script 554 Writing a Geocoding Script556 Resources (RDFa): A Promising Complement to Microformats 557 Reference for Further Study 558 Summary 558 CHAPTER 19 Integrating Search 559 Google Ajax Search 559 Manipulating Search Results 559 Yahoo! Search 561 Yahoo! Images 563 Microsoft Live.com Search 564 OpenSearch 568 Google Desktop HTTP/XML Gateway 570 Summary 571 APPENDIX 573 INDEX 57

An investigation into the application of the IEEE 1394 high performance serial bus to sound installation contro

This thesis investigates the feasibility of using existing IP-based control and monitoring protocols within professional audio installations utilising IEEE 1394 technology. Current control and monitoring technologies are examined, and the characteristics common to all are extracted and compiled into an object model. This model forms the foundation for a set of evaluation criteria against which current and future control and monitoring protocols may be measured. Protocols considered include AV/C, MIDI, QSC-24, and those utilised within the UPnP architecture. As QSC-24 and the UPnP architecture are IP-based, the facilities required to transport IP datagrams over the IEEE 1394 bus are investigated and implemented. Example QSC-24 and UPnP architecture implementations are described, which permit the control and monitoring of audio devices over the IEEE 1394 network using these IP-based technologies. The way forward for the control and monitoring of professional audio devices within installations is considered, and recommendations are provided.KMBT_363Adobe Acrobat 9.54 Paper Capture Plug-i

Virtual Machine Lifecycle Management in Grid and Cloud Computing

Virtualisierungstechnologie ist die Grundlage für zwei wichtige Konzepte: Virtualized Grid Computing und Cloud Computing. Ersteres ist eine Erweiterung des klassischen Grid Computing. Es hat zum Ziel, die Anforderungen kommerzieller Nutzer des Grid hinsichtlich der Isolation von gleichzeitig ausgeführten Batch-Jobs und der Sicherheit der zugehörigen Daten zu erfüllen. Dabei werden Anwendungen in virtuellen Maschinen ausgeführt, um sie voneinander zu isolieren und die von ihnen verarbeiteten Daten vor anderen Nutzern zu schützen. Darüber hinaus löst Virtualized Grid Computing das Problem der Softwarebereitstellung, eines der bestehenden Probleme des klassischen Grid Computing. Cloud Computing ist ein weiteres Konzept zur Verwendung von entfernten Ressourcen. Der Fokus dieser Dissertation bezüglich Cloud Computing liegt auf dem “Infrastructure as a Service Modell”, das Ideen des (Virtualized) Grid Computing mit einem neuartigen Geschäftsmodell kombiniert. Dieses besteht aus der Bereitstellung von virtuellen Maschinen auf Abruf und aus einem Tarifmodell, bei dem lediglich die tatsächliche Nutzung berechnet wird. Der Einsatz von Virtualisierungstechnologie erhöht die Auslastung der verwendeten (physischen) Rechnersysteme und vereinfacht deren Administration. So ist es beispielsweise möglich, eine virtuelle Maschine zu klonen oder einen Snapshot einer virtuellen Maschine zu erstellen, um zu einem definierten Zustand zurückkehren zu können. Jedoch sind noch nicht alle Probleme im Zusammenhang mit der Virtualisierungstechnologie gelöst. Insbesondere entstehen durch den Einsatz in den sehr dynamischen Umgebungen des Virtualized Grid Computing und des Cloud Computing neue Herausforderungen für die Virtualisierungstechnologie. Diese Dissertation befasst sich mit verschiedenen Aspekten des Einsatzes von Virtualisierungstechnologie in Virtualized Grid und Cloud Computing Umgebungen. Zunächst wird der Lebenszyklus von virtuellen Maschinen in diesen Umgebungen untersucht, und es werden Modelle dieses Lebenszyklus entwickelt. Anhand der entwickelten Modelle werden Probleme identifiziert und Lösungen für diese Probleme entwickelt. Der Fokus liegt dabei auf den Bereichen Speicherung, Bereitstellung und Ausführung von virtuellen Maschinen. Virtuelle Maschinen werden üblicherweise in so genannten Disk Images, also Abbildern von virtuellen Festplatten, gespeichert. Dieses Format hat nicht nur Einfluss auf die Speicherung von größeren Mengen virtueller Maschinen, sondern auch auf deren Bereitstellung. In den untersuchten Umgebungen hat es zwei konkrete Nachteile: es verschwendet Speicherplatz und es verhindert eine effiziente Bereitstellung von virtuellen Maschinen. Maßnahmen zur Steigerung der Sicherheit von virtuellen Maschinen haben auf alle drei genannten Bereiche Einfluss. Beispielsweise sollte vor der Bereitstellung einer virtuellen Maschine geprüft werden, ob die darin installierte Software noch aktuell ist. Weiterhin sollte die Ausführungsumgebung Möglichkeiten bereitstellen, um die virtuelle Infrastruktur wirksam zu überwachen. Die erste in dieser Dissertation vorgestellte Lösung ist das Konzept der Image Composition. Es beschreibt die Komposition eines kombinierten Disk Images aus mehreren Schichten. Dadurch können Teile der einzelnen Schichten, die von mehreren virtuellen Maschinen verwendet werden, zwischen diesen geteilt und somit der Speicherbedarf für die Gesamtheit der virtuellen Maschinen reduziert werden. Der Marvin Image Compositor ist die Umsetzung dieses Konzepts. Die zweite Lösung ist der Marvin Image Store, ein Speichersystem für virtuelle Maschinen, das nicht auf den traditionell genutzten Disk Images basiert, sondern die darin enthaltenen Daten und Metadaten auf eine effiziente Weise getrennt voneinander speichert. Weiterhin werden vier Lösungen vorgestellt, die die Sicherheit von virtuellen Maschine verbessern können: Der Update Checker ist eine Lösung, die es ermöglicht, veraltete Software in virtuellen Maschinen zu identifizieren. Dabei spielt es keine Rolle, ob die jeweilige virtuelle Maschine gerade ausgeführt wird oder nicht. Die zweite Sicherheitslösung ermöglicht es, mehrere virtuelle Maschinen, die auf dem Konzept der Image Composition basieren, zentral zu aktualisieren. Das bedeutet, dass die einmalige Installation einer neuen Softwareversion ausreichend ist, um mehrere virtuelle Maschinen auf den neuesten Stand zu bringen. Die dritte Sicherheitslösung namens Online Penetration Suite ermöglicht es, virtuelle Maschinen automatisiert nach Schwachstellen zu durchsuchen. Die Überwachung der virtuellen Infrastruktur auf allen Ebenen ist der Zweck der vierten Sicherheitslösung. Zusätzlich zur Überwachung ermöglicht diese Lösung auch eine automatische Reaktion auf sicherheitsrelevante Ereignisse. Schließlich wird ein Verfahren zur Migration von virtuellen Maschinen vorgestellt, welches auch ohne ein zentrales Speichersystem eine effiziente Migration ermöglicht