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Ítem Implementación de una política de seguridad para el manejo de la información en Palmar Santa Elena S.A(Universidad Icesi, 2006-01-01) Vargas Gallego, Jairo Alonzo; Madrid Molina Juan ManuelPALMAR SANTA ELENA S.A. es una empresa que se dedica al cultivo de la palma de aceite y a la extracción de aceite crudo de palma. Las oficinas se encuentran distribuidas en dos zonas así: el personal contable administrativo en la ciudad de Santiago de Cali (Valle del Cauca), el personal de campo y producción en la ciudad de Tumaco (Nariño). Este personal se encuentra a su vez sectorizado en dos áreas geográficas así: el área de la planta extractora, donde se extrae el aceite crudo del fruto de la palma de aceite y el área de cultivo en donde se concentra el personal administrativo de Tumaco y el personal de campo, que se encarga de cultivar y mantener la palma de aceite.Ítem Software platform for services in Colombian cities using the Living Labs approach(Ieee, 2011-12-05) Navarro Cadavid, AndrésComponent Based Software Engineering is a way to improve software modularization and to embed architectural concerns in the source code. Making explicit the architectural concerns in code helps to mitigate the problem of architectural erosion. The restructuring of legacy code with components in mind requires the use of tools to assess compliance with component programming principles. The property of communication integrity is one of the major principles for implementing software architectures. However, there is a paucity of tools for assessing the quality of code components. To cope with this issue, we define a component model in Java and a tool for identifying component types, which relies on a set of rules to statically check potential violations of the communication integrity property in Java source code. We illustrate its application with a case study and report the results of our experiments with it.Ítem Improving context-awareness in self-adaptation using the DYNAMICO reference model(IEEE, 2013-05-20) Muller, Hausi A.Self-adaptation mechanisms modify target systems dynamically to address adaptation goals, which may evolve continuously due to changes in system requirements. These changes affect values and thresholds of observed context variables and monitoring logic, or imply the addition and/or deletion of context variables, thus compromising self-adaptivity effectiveness under static monitoring infrastructures. Nevertheless, self-adaptation approaches often focus on adapting target systems only rather than monitoring infrastructures. Previously, we proposed DYNAMICO, a reference model for self-adaptive systems where adaptation goals and monitoring requirements change dynamically. This paper presents an implementation of DYNAMICO comprising our SMARTERCONTEXT monitoring infrastructure and QoS-CARE adaptation framework in a self-adaptation solution that maintains its context-awareness relevance. To evaluate our reference model we use self-adaptive system properties and the Znn.com exemplar to compare the Rainbow system with our DYNAMICO implementation. The results of the evaluation demonstrate the applicability, feasibility, and effectiveness of DYNAMICO, especially for self-adaptive systems with context-awareness requirements. © 2013 IEEE.Ítem Definición en la Universidad del Valle del dominio "cumplimiento" para el control de los requisitos legales tomando como base la norma ISO 17799:2005(Universidad Icesi, 2008-01-01) Quintana Plaza, Dagoberto; Madrid Molina Juan ManuelEste documento contiene la definición en la Universidad del Valle del dominio "Cumplimiento" para el control de los requisitos legales tomando como base la Norma ISO 17799:2005. La razón para definir este control, es la necesidad que tiene la Universidad del Valle, de obtener a mediano plazo, la certificación institucional de sus sistemas de gestión de la seguridad de la información. Se realizó un estudio, del estado actual de la Universidad del Valle, con base en las recomendaciones de la norma, sobre el dominio de cumplimiento y se definieron los procedimientos para el control de los requisitos legales y derechos de propiedad intelectual, de la Universidad del Valle.Ítem SNR estimation for on body communications in MB OFDM Ultra Wide Band communications(Ieee Computer Society, 2010-04-12) Navarro Cadavid, AndrésIn this paper a new signal to noise ratio estimator algorithm based on the moments of the received signal is presented. The novel algorithm has been designed for Ultra Wide Band communications based on Multi Band Orthogonal Frequency Division Multiplexing (MB-OFDM) communication systems. In this proposal, we analyze the behavior of ultra wide band channels when the time and frequency fading have fast changes. Hence, different time coherence values were considered and all the frequency fading models are based in real measurements made in an anechoic chamber. It is remarkable that all the measurement campaigns were focused on body communications. We conclude that the proposed model can be used for SNR estimation in adaptive modulation and channel estimation and link quality control in MB OFDM systems. The performance of the proposed SNR estimation algorithm and its comparison with other SNR estimators was achieved through simulations based on real channel measurements.Ítem Exploiting social context in personalized web-tasking applications(IBM Corp., 2014-11-03) Villegas Machado, Norha MilenaPersonalized Web-Tasking (PWT) systems automate ordinary and repetitive web interactions while exploiting personal context to deliver personalized features. Among the personal context of a user, social context is all information obtained from the relationships with other users, which is relevant to the user's personalized web-tasks. Current approaches exploit the information of social media, or the explicit input of the user, and use it as is. In addition to this, PWT systems also benefit by inferring social relationships through reasoning over such information and other sources of context. For example, a calendar application might record events the user shares with other people, or the sensors on mobile devices can be used to identify others nearby. This information can be exploited to improve the execution of PWT applications including its personalization and context-adaptive capabilities.Ítem KeyConcept : Un motor de búsqueda conceptual(Universidad Icesi, 2006-07-28) Madrid Molina, Juan Manuel; Gauch, SusanAs the number of available Web pages grows, users experience increasing difficulty finding documents relevant to their interests. One of the underlying reasons for this is that most search engines find matches based on keywords, regardless of their meanings. To provide the user with more useful information, we need a system that includes information about the conceptual frame of the queries as well as its keywords. This is the goal of KeyConcept, a search engine that retrieves documents based on a combination of keyword and conceptual matching. Documents are automatically classified to determine the concepts to which they belong. Query concepts are determined automatically from a small description of the query or explicitly entered by the user. This paper describes the system architecture, the training of the classifier, and the results of our experiments evaluating system performance. KeyConcept is shown to significantly improve search result precision through its use of conceptual retrieval.Ítem Arquitectura de software basada en la Internet para la simulación virtual de cirugía endoscópica otorrinolaringológica(Universidad Icesi, 2006-07-28) Navarro Newball, Andrés Adolfo; Múnera Salazar, Luis Eduardo; Vélez Beltrán, Jorge Alberto; Bernabé, GregorioEn este trabajo el término arquitectura se refiere principalmente a la estructura lógica de sus componentes de software. Sin embargo, cuando se requiera, otros aspectos tales como elhardware y el sistema operativo se tienen en cuenta. El objeto del sistema resultante es brindar dos servicios de telemedicina otorrinolaringológica a practicantes en medicina o a doctores en locaciones remotas. En general, el difícil acceso a la prácticay la dificultad de acceder a servicios médicos en locaciones geográficamente remotas son situaciones comunes en América Latina. De acuerdo con esto, un sistema de soporte sería degran ayuda. Los servicios sugeridos, entrenamiento remoto utilizando simulación virtual y soporte remoto a la toma de decisiones, deben estar soportados por una arquitecturaapropiada a la internet. Este documento presenta primero una introducción al proyecto. Seguidamente se describe la novedad del trabajo. A continuación se detallan los servicios y la arquitectura propuestos. Finalmente, se presentan los resultados y una serie de conclusiones y pasos a seguir.Ítem Estructura básica del proceso unificado de desarrollo de software(Universidad Icesi, 2006-07-28) Castro Gil, Robin AlbertoFor a long time, the traditional waterfall model has been used in software development. Over this time it has demonstrated that it does not reflect properly the inherent complexity of the software development process. The problems that this model presents stem from its structure: a sequence of large stages that have complete documentation as a milestone before being able to continue to the following stage. To solve this problem it is neccesary to use iterative and incremental methods that together with other key practices, such as risk management and the adaptable planning, provide a natural guidance to the software development process. IBM’s RUP is taken into special consideration. RUP is based on the spiral model and organizes iterations into stages and phases in order to obtain a more solid, clear, and adjustable structure of the particular needs of every organization. This article aims to describe iterative development iterative in general and the advantages that its use offers in software develoment processes.Ítem DYNAMICO: A Reference Model for Governing Control Objectives and Context Relevance in Self-Adaptive Software Systems(2010-10-24) Duchien, LaurenceDespite the valuable contributions on self-adaptation, most implemented approaches assume adaptation goals and monitoring infrastructures as non-mutable, thus constraining their applicability to systems whose context awareness is restricted to static monitors. Therefore, separation of concerns, dynamic monitoring, and runtime requirements variability are critical for satisfying system goals under highly changing environments. In this chapter we present DYNAMICO, a reference model for engineering adaptive software that helps guaranteeing the coherence of (i) adaptation mechanisms with respect to changes in adaptation goals; and (ii) monitoring mechanisms with respect to changes in both adaptation goals and adaptation mechanisms. DYNAMICO improves the engineering of self-adaptive systems by addressing (i) the management of adaptation properties and goals as control objectives; (ii) the separation of concerns among feedback loops required to address control objectives over time; and (iii) the management of dynamic context as an independent control function to preserve context-awareness in the adaptation mechanism. © 2013 Springer-Verlag.