Web Service Architecture

OGC Introduction OGC members are specifying interoperability interfaces and metadata encodings that enable real time integration of heterogeneous sensor webs into the information infrastructure. Developers will use these specifications in creating applications, platforms, and products involving Web-connected devices such as flood gauges, air pollution monitors, stress gauges on bridges, mobile heart monitors, Webcams, and robots as well as space and airborne earth imaging devices. OGC members have developed and tested the following candidate specifications. Others are planned. Observations & Measurements (O&M) - Standard models and XML Schema for encoding observations and measurements from a sensor, both archived and real-time. Please visit our OpenGIS® Specification page to view and comment on publicly available OGC Sensor Web Enablement Specifications. General Documentation Sensor Web Enablement Specification Links

Service Web Un article de Wikipédia, l'encyclopédie libre. Un service web (ou service de la toile[1]) est un programme informatique de la famille des technologies web permettant la communication et l'échange de données entre applications et systèmes hétérogènes dans des environnements distribués. Il s'agit donc d'un ensemble de fonctionnalités exposées sur internet ou sur un intranet, par et pour des applications ou machines, sans intervention humaine, de manière synchrone ou asynchrone. Le protocole de communication est défini dans le cadre de la norme SOAP dans la signature du service exposé (WSDL). Le concept a été précisé et mis en œuvre dans le cadre de Web Services Activity[2], au W3C, particulièrement avec le protocole SOAP. Très grandes généralités sur un service web. Dans sa présentation la plus générale, un service web se concrétise par un agent, réalisé selon une technologie informatique précise, par un fournisseur du service. Introduction[modifier | modifier le code] Portail d’Internet

Web search engine Software system for finding relevant information on the Web A search engine is a software system that provides hyperlinks to web pages and other relevant information on the Web in response to a user's query. The user inputs a query within a web browser or a mobile app, and the search results are often a list of hyperlinks, accompanied by textual summaries and images. Users also have the option of limiting the search to a specific type of results, such as images, videos, or news. For a search provider, its engine is part of a distributed computing system that can encompass many data centers throughout the world. There have been many search engines since the dawn of the Web in the 1990s, but Google Search became the dominant one in the 2000s and has remained so. History Pre-1990s In 1945, Vannevar Bush described an information retrieval system that would allow a user to access a great expanse of information, all at a single desk.[3] He called it a memex. 1990s: Birth of search engines Europe

Understanding WSDL Aaron Skonnard Northface University October 2003 Applies to: Web Services Web Services Description Language (WSDL) 1.1 WS-I Basic Profile Version 1.0 XML Messaging XML Schema Summary: See the importance of WSDL in the overall Web services architecture, as it describes the complete contract for application communication. Make Web services widely approachable by using WSDL definitions to generate code that knows precisely how to interact with the Web service described, and hides tedious details in sending and receiving SOAP messages over different protocols. (24 printed pages) Contents Overview WSDL Basics Types Messages Interfaces (portTypes) Bindings Services WSDL Editors Where Are We? Overview XML makes it possible for developers to expose valuable resources in a highly interoperable fashion, where a resource is any type of application or data store used within an organization. Figure 1: Resources and services A message exchange is also referred to as an operation. WSDL Basics <! Table 1.

W3Schools Online Web Tutorials Constrained Application Protocol (CoAP) CoRE Working Group Z. Shelby Internet-Draft Sensinode Intended status: Standards Track K. Hartke Expires: December 30, 2013 C. [include full document text] Liste des spécifications des services web WS-* Un article de Wikipédia, l'encyclopédie libre. Il existe une variété de spécifications associées aux Services Web WS-*. Ces spécifications sont à des niveaux de maturité parfois différents, et sont maintenus par diverses organisations de standardisation. Les spécifications de ces Services Web sont aujourd'hui désignées sous le terme WS-*, certainement en raison du sigle WS- qui précède la majorité d'entre elles. Cette page liste la plupart des spécifications considérées comme faisant partie des WS-*. Web Services Activity, sur le site du W3C UDDI signifie Universal Description, Discovery, and Integration (UDDI 1.0, 2.0 et 3.0): Normalise l'architecture d'un annuaire distribué permettant de publier les interfaces des services Web (endpoint des contrats WSDL). XML (Extensible Markup Language)Espace de noms XMLXML SchemaXPathXML Information SetXIncludeXML Pointer WS-I Basic ProfileWS-I Basic Security ProfileSimple Soap Binding Profile WS-ReliableMessagingWS-Reliability Portail d’Internet

Web scraping Web scraping, web harvesting, or web data extraction is data scraping used for extracting data from websites.[1] Web scraping software may access the World Wide Web directly using the Hypertext Transfer Protocol, or through a web browser. While web scraping can be done manually by a software user, the term typically refers to automated processes implemented using a bot or web crawler. It is a form of copying, in which specific data is gathered and copied from the web, typically into a central local database or spreadsheet, for later retrieval or analysis. Web scraping a web page involves fetching it and extracting from it.[1][2] Fetching is the downloading of a page (which a browser does when you view the page). Newer forms of web scraping involve listening to data feeds from web servers. There are methods that some websites use to prevent web scraping, such as detecting and disallowing bots from crawling (viewing) their pages. History[edit] Techniques[edit] Human copy-and-paste[edit]

WSDL Example Given below is a WSDL file that is provided to demonstrate a simple WSDL program. Let us assume the service provides a single publicly available function, called sayHello. This function expects a single string parameter and returns a single string greeting. For example, if you pass the parameter world then service function sayHello returns the greeting, "Hello, world!". Example Contents of HelloService.wsdl file: Example Analysis Definitions : HelloServiceType : Using built-in data types and they are defined in XMLSchema.Message : sayHelloRequest : firstName parametersayHelloresponse: greeting return valuePort Type : sayHello operation that consists of a request and a response service.Binding : Direction to use the SOAP HTTP transport protocol.Service : Service available at : Associates the binding with the URI where the running service can be accessed.

Machine vision Early Automatix (now part of Microscan) machine vision system Autovision II from 1983 being demonstrated at a trade show. Camera on tripod is pointing down at a light table to produce backlit image shown on screen, which is then subjected to blob extraction. Machine vision (MV) is the technology and methods used to provide imaging-based automatic inspection and analysis for such applications as automatic inspection, process control, and robot guidance in industry.[1][2] The scope of MV is broad.[2][3][4] MV is related to, though distinct from, computer vision.[2] Applications[edit] The primary uses for machine vision are automatic inspection and industrial robot guidance.[5] Common machine vision applications include quality assurance, sorting, material handling, robot guidance, and optical gauging.[4] Methods[edit] Imaging[edit] Image processing[edit] After an image is acquired, it is processed.[19] Machine vision image processing methods include[further explanation needed] Outputs[edit]

LLNs RPL Representational State Transfer Un article de Wikipédia, l'encyclopédie libre. REST (representational state transfer) est un style d’architecture pour les systèmes hypermédia distribués, créé par Roy Fielding en 2000 dans le chapitre 5 de sa thèse de doctorat[1]. REST n’est pas un protocole (tel que HTTP) ou un format. Ce style d'architecture est particulièrement bien adapté au World Wide Web mais n'en est pas dépendant. Les contraintes, telles que définies par Roy Fielding, peuvent s'appliquer à d'autres protocoles d'application que HTTP. Contraintes d'une architecture REST[modifier | modifier le code] Les contraintes sont les suivantes : Client-serveur : les responsabilités sont séparées entre le client et le serveur. Description de REST[modifier | modifier le code] Confusion entre REST et protocoles[modifier | modifier le code] RPC ainsi que SOAP ne sont pas des styles d'architecture mais des protocoles. Avantages de REST[modifier | modifier le code] Inconvénients de REST[modifier | modifier le code]

Web science From Wikipedia, the free encyclopedia Emerging interdisciplinary field Web science is an emerging interdisciplinary field concerned with the study of large-scale socio-technical systems, particularly the World Wide Web.[1][2] It considers the relationship between people and technology, the ways that society and technology co-constitute one another and the impact of this co-constitution on broader society. An earlier definition was given by American computer scientist Ben Shneiderman: "Web Science" is processing the information available on the web in similar terms to those applied to natural environment.[4] The Web Science Institute describes Web Science as focusing "the analytical power of researchers from disciplines as diverse as mathematics, sociology, economics, psychology, law and computer science to understand and explain the Web. Areas of activity[edit] Emergent properties[edit] Research groups[edit] Related major conferences[edit] See also[edit] References[edit] External links[edit]