Geolocation in the Browser from Google Gears to Geolocation Sensors
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Effects and Opportunities of Native Code Extensions For
Effects and Opportunities of Native Code Extensions for Computationally Demanding Web Applications DISSERTATION zur Erlangung des akademischen Grades Dr. Phil. im Fach Bibliotheks- und Informationswissenschaft eingereicht an der Philosophischen Fakultät I Humboldt-Universität zu Berlin von Dipl. Inform. Dennis Jarosch Präsident der Humboldt-Universität zu Berlin: Prof. Dr. Jan-Hendrik Olbertz Dekan der Philosophischen Fakultät I: Prof. Michael Seadle, Ph.D. Gutachter: 1. Prof. Dr. Robert Funk 2. Prof. Michael Seadle, Ph.D. eingereicht am: 28.10.2011 Tag der mündlichen Prüfung: 16.12.2011 Abstract The World Wide Web is amidst a transition from interactive websites to web applications. An increasing number of users perform their daily computing tasks entirely within the web browser — turning the Web into an important platform for application development. The Web as a platform, however, lacks the computational performance of native applications. This problem has motivated the inception of Microsoft Xax and Google Native Client (NaCl), two independent projects that fa- cilitate the development of native web applications. Native web applications allow the extension of conventional web applications with compiled native code, while maintaining operating system portability. This dissertation determines the bene- fits and drawbacks of native web applications. It also addresses the question how the performance of JavaScript web applications compares to that of native appli- cations and native web applications. Four application benchmarks are introduced that focus on different performance aspects: number crunching (serial and parallel), 3D graphics performance, and data processing. A performance analysis is under- taken in order to determine and compare the performance characteristics of native C applications, JavaScript web applications, and NaCl native web applications. -
HTML5 and the Open Web Platform
HTML5 and the Open Web Platform Stuttgart 28 May 2013 Dave Raggett <[email protected]> The Open Web Platform What is the W3C? ● International community where Members, a full-time staff and the public collaborate to develop Web standards ● Led by Web inventor Tim Berners-Lee and CEO Jeff Jaffe ● Hosted by MIT, ERCIM, Keio and Beihang ● Community Groups open to all at no fee ● Business Groups get more staff support ● Technical Working Groups ● Develop specs into W3C Recommendations ● Participants from W3C Members and invited experts ● W3C Patent process for royalty free specifications 3 Who's involved ● W3C has 377 Members as of 11 May 2013 ● To name just a few ● ACCESS, Adobe, Akamai, Apple, Baidu, BBC, Blackberry (RIM), BT, Canon, Deutsche Telekom, eBay, Facebook, France Telecom, Fujitsu, Google, Hitachi, HP, Huawei, IBM, Intel, LG, Microsoft, Mozilla, NASA, NEC, NTT DoCoMo, Nuance, Opera Software, Oracle, Panasonic, Samsung, Siemens, Sony, Telefonica, Tencent, Vodafone, Yandex, … ● Full list at ● http://www.w3.org/Consortium/Member/List 4 The Open Web Platform 5 Open Web Platform ● Communicate with HTTP, Web Sockets, XML and JSON ● Markup with HTML5 ● Style sheets with CSS ● Rich graphics ● JPEG, PNG, GIF ● Canvas and SVG ● Audio and Video ● Scripting with JavaScript ● Expanding range of APIs ● Designed for the World's languages ● Accessibility with support for assistive technology 6 Hosted and Packaged Apps ● Hosted Web apps can be directly loaded from a website ● Packaged Web apps can be locally installed on a device and run without the need for access to a web server ● Zipped file containing all the necessary resources ● Manifest file with app meta-data – Old work on XML based manifests (Web Widgets) – New work on JSON based manifests ● http://w3c.github.io/manifest/ ● Pointer to app's cache manifest ● List of required features and permissions needed to run correctly ● Runtime and security model for web apps ● Privileged apps must be signed by installation origin's private key 7 HTML5 Markup ● Extensive range of features ● Structural, e.g. -
Platform Independent Web Application Modeling and Development with Netsilon Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin
Platform independent Web application modeling and development with Netsilon Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin To cite this version: Pierre-Alain Muller, Philippe Studer, Frédéric Fondement, Jean Bézivin. Platform independent Web application modeling and development with Netsilon. Software and Systems Modeling, Springer Ver- lag, 2005, 4 (4), pp.424-442. 10.1007/s10270-005-0091-4. inria-00120216 HAL Id: inria-00120216 https://hal.inria.fr/inria-00120216 Submitted on 21 Feb 2007 HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est archive for the deposit and dissemination of sci- destinée au dépôt et à la diffusion de documents entific research documents, whether they are pub- scientifiques de niveau recherche, publiés ou non, lished or not. The documents may come from émanant des établissements d’enseignement et de teaching and research institutions in France or recherche français ou étrangers, des laboratoires abroad, or from public or private research centers. publics ou privés. Platform Independent Web Application Modeling and Development with Netsilon PIERRE-ALAIN MULLER INRIA Rennes Campus de Beaulieu, Avenue du Général Leclerc, 35042 Rennes, France pa.muller@ uha.fr PHILIPPE STUDER ESSAIM/MIPS, Université de Haute-Alsace, 12 rue des Frères Lumière, 68093 Mulhouse, France ph.studer@ uha.fr FREDERIC FONDEMENT EPFL / IC / UP-LGL, INJ œ Station 14, CH-1015 Lausanne EPFL, Switzerland frederic.fondement@ epfl.ch JEAN BEZIVIN ATLAS Group, INRIA & LINA, Université de Nantes, 2, rue de la Houssinière, BP 92208, 44322 Nantes, France jean.bezivin@ lina.univ-nantes.fr Abstract. This paper discusses platform independent Web application modeling and development in the context of model-driven engineering. -
Introducing 2D Game Engine Development with Javascript
CHAPTER 1 Introducing 2D Game Engine Development with JavaScript Video games are complex, interactive, multimedia software systems. These systems must, in real time, process player input, simulate the interactions of semi-autonomous objects, and generate high-fidelity graphics and audio outputs, all while trying to engage the players. Attempts at building video games can quickly be overwhelmed by the need to be well versed in software development as well as in how to create appealing player experiences. The first challenge can be alleviated with a software library, or game engine, that contains a coherent collection of utilities and objects designed specifically for developing video games. The player engagement goal is typically achieved through careful gameplay design and fine-tuning throughout the video game development process. This book is about the design and development of a game engine; it will focus on implementing and hiding the mundane operations and supporting complex simulations. Through the projects in this book, you will build a practical game engine for developing video games that are accessible across the Internet. A game engine relieves the game developers from simple routine tasks such as decoding specific key presses on the keyboard, designing complex algorithms for common operations such as mimicking shadows in a 2D world, and understanding nuances in implementations such as enforcing accuracy tolerance of a physics simulation. Commercial and well-established game engines such as Unity, Unreal Engine, and Panda3D present their systems through a graphical user interface (GUI). Not only does the friendly GUI simplify some of the tedious processes of game design such as creating and placing objects in a level, but more importantly, it ensures that these game engines are accessible to creative designers with diverse backgrounds who may find software development specifics distracting. -
Seamless Offloading of Web App Computations from Mobile Device to Edge Clouds Via HTML5 Web Worker Migration
Seamless Offloading of Web App Computations From Mobile Device to Edge Clouds via HTML5 Web Worker Migration Hyuk Jin Jeong Seoul National University SoCC 2019 Virtual Machine & Optimization Laboratory Department of Electrical and Computer Engineering Seoul National University Computation Offloading Mobile clients have limited hardware resources Require computation offloading to servers E.g., cloud gaming or cloud ML services for mobile Traditional cloud servers are located far from clients Suffer from high latency 60~70 ms (RTT from our lab to the closest Google Cloud DC) Latency<50 ms is preferred for time-critical games Cloud data center End device [Kjetil Raaen, NIK 2014] 2 Virtual Machine & Optimization Laboratory Edge Cloud Edge servers are located at the edge of the network Provide ultra low (~a few ms) latency Central Clouds Mobile WiFi APs Small cells Edge Device Cloud Clouds What if a user moves? 3 Virtual Machine & Optimization Laboratory A Major Issue: User Mobility How to seamlessly provide a service when a user moves to a different server? Resume the service at the new server What if execution state (e.g., game data) remains on the previous server? This is a challenging problem Edge computing community has struggled to solve it • VM Handoff [Ha et al. SEC’ 17], Container Migration [Lele Ma et al. SEC’ 17], Serverless Edge Computing [Claudio Cicconetti et al. PerCom’ 19] We propose a new approach for web apps based on app migration techniques 4 Virtual Machine & Optimization Laboratory Outline Motivation Proposed system WebAssembly -
The Viability of the Web Browser As a Computer Music Platform
Lonce Wyse and Srikumar Subramanian The Viability of the Web Communications and New Media Department National University of Singapore Blk AS6, #03-41 Browser as a Computer 11 Computing Drive Singapore 117416 Music Platform [email protected] [email protected] Abstract: The computer music community has historically pushed the boundaries of technologies for music-making, using and developing cutting-edge computing, communication, and interfaces in a wide variety of creative practices to meet exacting standards of quality. Several separate systems and protocols have been developed to serve this community, such as Max/MSP and Pd for synthesis and teaching, JackTrip for networked audio, MIDI/OSC for communication, as well as Max/MSP and TouchOSC for interface design, to name a few. With the still-nascent Web Audio API standard and related technologies, we are now, more than ever, seeing an increase in these capabilities and their integration in a single ubiquitous platform: the Web browser. In this article, we examine the suitability of the Web browser as a computer music platform in critical aspects of audio synthesis, timing, I/O, and communication. We focus on the new Web Audio API and situate it in the context of associated technologies to understand how well they together can be expected to meet the musical, computational, and development needs of the computer music community. We identify timing and extensibility as two key areas that still need work in order to meet those needs. To date, despite the work of a few intrepid musical Why would musicians care about working in explorers, the Web browser platform has not been the browser, a platform not specifically designed widely considered as a viable platform for the de- for computer music? Max/MSP is an example of a velopment of computer music. -
Introduction to Google Gears
Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google Google Gears Dion Almaer code.google.com ajaxian.com Dion Almaer — Google Gears Slide 1 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google Offline Web via Open Web • Why just solve this problem for Google? • Why not solve it for others? • Solution: Make it open source with a liberal license • New BSD Dion Almaer — Google Gears Slide 2 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google Why? “How often are you on a plane?” • Reliability • 1% of downtime can hurt at the wrong time • Performance • Local acceleration • Convenience • Not having to find a connection • You are offline more than you think! Dion Almaer — Google Gears Slide 3 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google What is the philosophy? •One application, one URL •Seamless transitions between online and offline •Ability to use local data, even when online •Available to all users on all platforms •... and a pony Dion Almaer — Google Gears Slide 4 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google What is the philosophy? Browser plugin: IE, Firefox, Safari (almost!) Dion Almaer — Google Gears Slide 5 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google What is the philosophy? Dion Almaer — Google Gears Slide 6 Colorado Software Summit: October 21 – 26, 2007 © Copyright 2007, Google What is the philosophy? Do for offline what XMLHttpRequest did for web apps Ajax Libraries Gears Libraries Dojo, -
Learning HTML5 Game Programming Addison-Wesley Learning Series
Learning HTML5 Game Programming Addison-Wesley Learning Series Visit informit.com/learningseries for a complete list of available publications. The Addison-Wesley Learning Series is a collection of hands-on programming guides that help you quickly learn a new technology or language so you can apply what you’ve learned right away. Each title comes with sample code for the application or applications built in the text. This code is fully annotated and can be reused in your own projects with no strings attached. Many chapters end with a series of exercises to encourage you to reexamine what you have just learned, and to tweak or adjust the code as a way of learning. Titles in this series take a simple approach: they get you going right away and leave you with the ability to walk off and build your own application and apply the language or technology to whatever you are working on. Learning HTML5 Game Programming A Hands-on Guide to Building Online Games Using Canvas, SVG, and WebGL James L. Williams Upper Saddle River, NJ • Boston • Indianapolis • San Francisco New York • Toronto • Montreal • London • Munich • Paris • Madrid Cape Town • Sydney • Tokyo • Singapore • Mexico City Many of the designations used by manufacturers and sellers to distinguish their products Associate are claimed as trademarks. Where those designations appear in this book, and the publish- Publisher er was aware of a trademark claim, the designations have been printed with initial capital Mark Taub letters or in all capitals. Senior Acquisitions The author and publisher have taken care in the preparation of this book, but make no Editor expressed or implied warranty of any kind and assume no responsibility for errors or omis- Trina MacDonald sions. -
Advanced NFV Features Applied to Multimedia Real-Time Communications Use Case
Advanced NFV Features Applied to Multimedia Real-Time Communications Use Case Ana Pol ∗, Anton Roman ∗, Panagiotis Trakadas†, Panagiotis Karkazis†, Evgenia Kapassa‡, Marios Touloupou‡, Dimosthenis Kyriazis‡, Juan L. de la Cruz§, Pol Alemany§, Ricard Vilalta§, Raul Munoz§ ∗Quobis, O Porrino, Spain, Email: [ana.pol,anton.roman]@quobis.com †Synelixis Solutions S.A. 157, Perissou, str., 14343, Athens, Greece, Email: [ptrak,pkarkazis]@synelixis.com ‡Department of Digital Systems, University of Piraeus, Piraeus, Greece, Email: [ekapassa, mtouloup,dimos]@unipi.gr §CTTC, Castelldefels, Spain, Email:[jdelacruz,palemany,rvilalta,rmunoz]@cttc.es Abstract — Real-time communications are services with very application service on top of the SONATA (powered by demanding requirements in terms of reliability and Quality of 5GTANGO) service platform. Service (QoS) that is not easy to be reached. 5G technologies provide tools and techniques that promise to overcome the The remaining of the paper is organized as follows. Section current shortcomings and thus give the opportunity to service II presents the state of the art of this work, while Section III providers to offer better services to the end users. This paper introduces the overall SONATA (powered by 5GTANGO) aims at describing how an existing real-time communications Service Platform. Section IV describe in detail then enhanced service can leverage the innovative features offered by the proposed features, specially focusing on the recently new- SONATA Service Platform (SP), such as network slicing, added features such as QoS and multi-WIM support. This automated monitoring management and Service Level section describes also the principles of SONATA (powered Agreement (SLA) enforcement, to meet the challenging requirements of the service. -
Will HTML 5 Restandardize the Web?
TECHNOLOGY NEWS Will HTML 5 Restandardize the Web? Steven J. Vaughan-Nichols The World Wide Web Consortium is developing HTML 5 as a stan- dard that provides Web users and developers with enhanced func- tionality without using the proprietary technologies that have become popular in recent years. n theory, the Web is a resource enhanced functionality without using “Microsoft is investing heavily in that is widely and uniformly proprietary technologies. the W3C HTML 5 effort, working with usable across platforms. As Indeed, pointed out Google our competitors and the Web commu- such, many of the Web’s researcher Ian Hickson, one of the nity at large. We want to implement key technologies and archi- W3C’s HTML 5 editors, “One of our ratified, thoroughly tested, and stable Itectural elements are open and goals is to move the Web away from standards that can help Web interop- platform-independent. proprietary technologies.” erability,” said Paul Cotton, cochair of However, some vendors have The as-yet-unapproved standard the W3C HTML Working Group and developed their own technologies takes HTML from simply describing Microsoft’s group manager for Web that provide more functionality than the basics of a text-based Web to creat- services standards and partners in Web standards—such as the ability to ing and presenting animations, audio, the company’s Interoperability Strat- build rich Internet applications. mathematical equations, typefaces, egy Team. Adobe System’s Flash, Apple’s and video, as well as providing offline At the same time though, Web QuickTime, and Microsoft’s Silverlight functionality. It also enables geoloca- companies say their proprietary tech- are examples of such proprietary tion, a rich text-editing model, and nologies are already up and running, formats. -
Document Object Model
Document Object Model Copyright © 1999 - 2020 Ellis Horowitz DOM 1 What is DOM • The Document Object Model (DOM) is a programming interface for XML documents. – It defines the way an XML document can be accessed and manipulated – this includes HTML documents • The XML DOM is designed to be used with any programming language and any operating system. • The DOM represents an XML file as a tree – The documentElement is the top-level of the tree. This element has one or many childNodes that represent the branches of the tree. Copyright © 1999 - 2020 Ellis Horowitz DOM 2 Version History • DOM Level 1 concentrates on HTML and XML document models. It contains functionality for document navigation and manipulation. See: – http://www.w3.org/DOM/ • DOM Level 2 adds a stylesheet object model to DOM Level 1, defines functionality for manipulating the style information attached to a document, and defines an event model and provides support for XML namespaces. The DOM Level 2 specification is a set of 6 released W3C Recommendations, see: – https://www.w3.org/DOM/DOMTR#dom2 • DOM Level 3 consists of 3 different specifications (Recommendations) – DOM Level 3 Core, Load and Save, Validation, http://www.w3.org/TR/DOM-Level-3/ • DOM Level 4 (aka DOM4) consists of 1 specification (Recommendation) – W3C DOM4, http://www.w3.org/TR/domcore/ • Consolidates previous specifications, and moves some to HTML5 • See All DOM Technical Reports at: – https://www.w3.org/DOM/DOMTR • Now DOM specification is DOM Living Standard (WHATWG), see: – https://dom.spec.whatwg.org -
Silo: Exploiting Javascript and DOM Storage for Faster Page Loads
Silo: Exploiting JavaScript and DOM Storage for Faster Page Loads James Mickens Microsoft Research [email protected] Abstract fast-loading pages result in happier users, longer visit times, and higher revenues for page owners. For exam- A modern web page contains many objects, and fetch- ple, when the e-commerce site Shopzilla reduced its av- ing these objects requires many network round trips— erage load time from 5 seconds to 1.5 seconds, it boosted establishing each HTTP connection requires a TCP page views by 25% and revenue by 10% [4]. Faster loads handshake, and each HTTP request/response pair re- also lead to more advertising impact, since Google’s Ad- quires at least one round trip. To decrease a page’s load Words system preferentially displays ads whose target time, designers try to minimize the number of HTTP re- pages load quickly [9]. Search engines also make load- quests needed to fetch the constituent objects. A com- ing speed a factor in their page rankings [22]. mon strategy is to inline the page’s JavaScript and CSS Given all of this, web designers have accumulated a files instead of using external links (and thus separate series of techniques for decreasing load times. Souder’s HTTP fetches). Unfortunately, browsers only cache ex- influential book High Performance Web Sites lists 14 of ternally named objects, so inlining trades fewer HTTP these techniques [23], with the most important one be- requests now for greater bandwidth consumption later if ing to minimize the number of HTTP requests needed a user revisits a page and must refetch uncacheable files.