http://biblioteca.universia.net/vernivel.do?nivel=2203 Mostrando recursos 1 - 20 de 75,750 es http://biblioteca.universia.net/img/logotipo.jpg http://biblioteca.universia.net/ http://biblioteca.universia.net/ficha.do?id=42146757 Conceptual modelling is needed to form a description of the domain of application at hand. In order to express the result of conceptual modelling, we need a modelling language. First order predicate logic (FOPL) or its variants (like Horn-clauses and Description Logics) and extensions (second order logics) can form a backbone of such a language, but some criteria is needed to define the fruitfulness or suitability of a modelling language, given the modelling task. The modelling language toget... Acta Electronica,Universitatis Tamperensis http://biblioteca.universia.net/ficha.do?id=41846897 . This paper describes the design of an electronic journals application where the article header information is held as Dublin Core metadata. Current best practice in the use of Dublin Core for bibliographic data description is indicated where this differs from pragmatic decisions made at the time when the application was designed. Using this working application as a case study to explore the specification of a metadata schema to describe bibliographic data has indicated that the use of Dubli... Dublin Core,Metadata Electronic Journals,Ross Macintyre http://biblioteca.universia.net/ficha.do?id=41691393 In this paper, we analyze the creation of electronic trading infrastructures using Electronic Data Interchange (EDI) standards and associated technologies. We compare the evolution of such infrastructures in Denmark, Finland, and Hong Kong. We analyze attempts to build trading infrastructures in these three countries by examining eight initiatives. We probe how these initiatives support the building efforts by locating the eight initiatives into a two dimensional framework, which distinguishe... An Electronic Trading http://biblioteca.universia.net/ficha.do?id=6716335 El sector que vamos a analizar, "La electrónica, Tecnologías de la Información y las telecomunicaciones", de acuerdo con la denominación de AETIC (Asociación de Empresas de Electrónica, Tecnologías de la Información y Telecomunicaciones de España), está compuesto de más de 2.000 posiciones estadísticas Taric, primordialmente de los capítulos 84, 85, 90 y 94. El sector está integrado a su vez por un sector industrial, que es el que se va a estudiar en este informe, y otro de servicios. Alonso Panero, Juan José http://biblioteca.universia.net/ficha.do?id=41711252 Teaching college pre-calculus is traditionally done in large sections, usually complemented with separate and smaller tutoring sections where students get to discuss problems with a tutor or a professor. The introduction of electronic workbooks, intelligent tutors, and computer assisted instruction into this traditional setting could result in higher achievement on the students part. This paper presents the design of an electronic workbook for practicing the concept of mathematical function. ... An Electronic-workbook,Jess H. Trespalacios,Manuel A. Prez-quiones http://biblioteca.universia.net/ficha.do?id=49082144 1 v. : International Colloquium on Automotive Electronic Technology. http://biblioteca.universia.net/ficha.do?id=42101635 Many fossils cannot be fully illustrated using a setting of physical light sources, and conventional photographic approaches are therefore insufficient. Polynomial texture mapping (PTM), a new technique for imaging surface relief using an ordinary digital camera and multiple light sources, offers an opportunity to resolve these difficulties. Palaeontologia Electronica,Yvind Hammer,Stefan Bengtson,Tom Malzbender,Dan Gelb http://biblioteca.universia.net/ficha.do?id=33759488 electronic calculator against a sliderule http://biblioteca.universia.net/ficha.do?id=37872321 0885-8985 IEEE Aerospace and Electronic Systems Society http://biblioteca.universia.net/ficha.do?id=41896325 y in comparing multiple products on the same screen all have adverse effects on electronic shopping [2]. Can customers find what they want in the stores? Are customers aware of what products are available? After all, diligence in browsing a store is not a virtue retailers should expect from its online customers. We review online retail store attributes such as the number of links into the store, image sizes, number of products, and store navigation features. By reviewing the user interface fe... http://biblioteca.universia.net/ficha.do?id=41908491 Introduction Soon you may find yourself e-mailing bytes representing your money to service providers across the ocean, using a smart card or a handheld computer to pay at your local grocery, and making backup copies to protect your money against hard-disk crashes. Now that technological advances in chip manufacturing have brought vast computing powers within everyone's reach, traditional cash is about to be replaced for an invention based on modern cryptography: electronic cash. This chapter ... http://biblioteca.universia.net/ficha.do?id=48851009 128 p. Symposium on Electronic Systems Reliability, http://biblioteca.universia.net/ficha.do?id=41786176 This paper will attempt to identify the issues that need to be addressed in order for stored-value cards and other electronic money systems to become a major payment mechanism in the global financial market. These new payments devices require a thorough evaluation of the appropriate regulatory, legal, and policy responses, as well as an estimate of the market acceptance (diffusion of this technology) throughout the financial and social system. These types of cards have the potential to have f... http://biblioteca.universia.net/ficha.do?id=2047938 En este artículo se propone la estructura de una secuencia organizada de bits que representa un billete electrónico. Los procedimientos considerados en el trabajo fueron: la comparación y análisis de los sistemas de pago electrónico actuales (First Virtual, Cybercash, Cybercoin, Millicent, eCash, Mondex y Tarjetas Inteligentes), y el análisis de las propiedades de un billete bancario en México. El billete electrónico generado se construye con Funciones Hash, Firmas Digitales y Códigos MAC, y ... García, M.E.; Vázquez, R. http://biblioteca.universia.net/ficha.do?id=10300482 En este artículo se realiza una simple presentación del nuevo instrumento de la Sociedad de la Información (SI) -la firma electrónica, o mejor, las firmas electrónicas- que acaba de regularse en la Unión Europea y, hace poco, en España. También se tratan brevemente su origen y finalidad, su contenido, sus posibilidades de aplicación y los usos que ya se le está dando dentro de las Administraciones Públicas. Balsells Traver, Marisa; Marcos Martín, José Luis http://biblioteca.universia.net/ficha.do?id=49019847 1 v. (various pagings) : President's Management Council (U.S.). Electronic Processes Initiatives Committee. http://biblioteca.universia.net/ficha.do?id=46619616 This article provides an overview of Internet-based electronic markets as a mechanism Arie Segev; Judith Gebauer; Frank Färber http://biblioteca.universia.net/ficha.do?id=46366344 ) Thomas Hardjono 1 and Jennifer Seberry Centre for Computer Security Research University of Wollongong Wollongong, NSW 2522 Australia email: thomas/jennie@cs.uow.edu.au Abstract As electronic commerce becomes a reality, additional services related to electronic commerce will also emerge. The current paper proposes the provision of electronic strongboxes as an integrated part of the wider electronic commerce. The strongbox concept is introduced as an electronic counterpart of physic... Thomas Hardjono; Thomas Hardjono; J. Seberry; Jennifer Seberry http://biblioteca.universia.net/ficha.do?id=49277505 Introducción a los dispositivos electrónicos. Emisión termoiónica. El diodo. El triodo. el tetrodo y el pentodo. Beléndez Vázquez, Augusto; Pastor Antón, Carlos; Martín García, Agapito http://biblioteca.universia.net/ficha.do?id=46621105 There is a tremendous demand for the ability to electronically buy and sell goods over networks. Electronic commerce has inspired a large variety of work. Unfortunately, much of that work ignores traditional transaction processing concerns --- chiefly atomicity. This paper discusses the role of atomicity in electronic commerce. It then briefly surveys some major types of electronic commerce pointing out flaws in atomicity. We pay special attention to the atomicity problems of proposals for di... J. D. Tygar