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Ítem Managing Dynamic Context to Optimize Smart Interactions and Services(2010-01-01) Villegas Machado, Norha MilenaWith the rapid growth of socio-technical ecosystems, smart interactions and services are permeating every walk of life. As smart interactions must managed automatically and interactively in response to evolving user's matters of concern, the smart Internet requires creative approaches where services and interactions are implemented with awareness of, and dynamic adaptation to, users, computational environments, changing policies and unknown requirements. Consequently, modeling and managing dynamic context is critical for implementing smart services and smart interactions effectively. Thus, smart interactions need infrastructure to acquire, compose, and distribute context information to multiple execution endpoints. Moreover, context management must be controlled and governed to optimize system properties. This chapter surveys context modeling and management approaches intended for the optimization of smart interactions and services, discusses the main challenges and requirements of context-awareness in the smart Internet, and provides a feature-based framework useful for the evaluation and implementation of context modeling and management mechanisms. © 2010 Springer-Verlag Berlin Heidelberg.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 Adaptación Automática de Software (in Spanish)(2011-03-31) Villegas Machado, Norha MilenaThe ability of organizations and their products, systems, and services to compete, adapt, and survive will depend increasingly on software and on the ability to integrate related software-intensive systems into systems of systems.Boehm (ICSE 2006)Ítem Managing Dynamic Context to Enable User-Driven Web Integration in the Personal Web(2010-10-15) Lau, AlexThe Personal Web is the people-centric instan-tiation of the Smart Internet where informa-tion systems, services and web content are ar-ticulated by users according to their matters of concern. To realize the vision of the Per-sonal Web, the Smart Internet requires infras-tructure to support the user in the integra-tion of personal data and the composition of personal services within a highly dynamic con-text that constitutes the user's Personal Web Sphere. To address these requirements, we pro-pose a user-driven context management frame-work, built on the top of the basic enabling infrastructure of the Personal Web, to support users in the run-time modification of personal context models. The core of our proposal is the management of monitoring concerns by imple-menting feedback loops, where the user acts as the planner of the controller to adapt the mon-itoring strategy by means of using web inter-actions to modify the personal context models. These context models, deployed at three differ-ent levels of abstraction, represent monitoring concerns by defining abstract types of contex-tual entities, the relationships among them and the interactions that the user can instantiate to drive web integration.Ítem A Framework for Automated and Composable Testing of Component-Based Services(IEEE, 2014-09-29) Villegas Machado, Norha MilenaThe vision of service-oriented computing has been largely developed on the fundamental principle of building systems by composing and orchestrating services in their control flow. Nowadays, software development is notably influenced by service-oriented architectures (SOAs), in which the quality of software systems is determined by the quality of the involved services and their actual composition. Despite the efforts on improving their individual quality, adding or replacing services in an evolving system can introduce failures, thus compromising the satisfaction of the system's functional and extra-functional requirements. These failures erode the trust in the SOA vision. Thus, a key issue for the industrial adoption of SOA is providing service providers, integrators, and consumers the means to build confidence that services behave according to the contracted quality conditions. In this paper we present a first version of PA SCA NI, a framework for specifying and executing test specifications for service-oriented systems.Ítem An Approach to the Implementation Process of CDIO(ResearchGate, 2014-06-01) Ulloa Villegas, Gonzalo VicenteThe implementation of integrated curricula following the CDIO recommendations may result in natural and straightforward processes for mature universities. Nevertheless, a CDIO-based curricular reform can result in an overwhelming and error-prone process when universities lack experience in the consolidation of curricula that naturally integrate disciplinary learning outcomes with engineering skills. In this paper we propose a general and replicable approach to the implementation and continual improvement of integrated curricula based on CDIO; and report on our experience and lessons learned during the redefinition of the curricula of the Telematics Engineering and Computing Systems Engineering programs at Universidad Icesi, in Colombia.Ítem Aspectos claves en la definición y adopción de estándares de interoperabilidad electrónica de datos : El caso de HL7 en el área de la salud(Universidad Icesi, 2008-12-18) Tamura Morimitsu, Gabriel; Villegas Machado, Norha MilenaThis article presents the results of the analysis that the DRISO research group has conducted about some aspects which have been found as critical in the process of definition and adoption of standards for exchange of electronic data, in the context of the HL7 standard for interoperability in health. For each considered aspect, its potential contribution to a standard for semantic interoperability is identified, as well as how it is used in the modeling of the objects to exchange, and in the modeling of the exchange process itself. The analysis of the critical aspects of standards is done following the line of the evolution of HL7 standard, identifying and distinguishing their structural and dynamic aspects. Finally, as a matter of conclusion, a reflection about the applicability of this analysis to the Colombian Ministry of Communications GEL-XML project, for electronic data exchange of basic data in all sectors of the economy.Ítem Análisis descriptivo del proceso de implementación del nivel 2 del modelo CMMI en una empresa regional de desarrollo de software(Universidad Icesi, 2008-12-18) Picazzo M., Catherine; Villegas Machado, Norha Milena; Tamura Morimitsu, GabrielCMMI (Capability Maturity Model Integration) is basically a continuous- improvement inspired model to classify software development organizations according to a fivelevel maturity and capability scale. The classification in a given level is based on the dominance that an organization shows evidence to have over the areas of that level, which in turn reflects the degree of maturity of the organization and of the processes that it follows to develop software. This article presents a preliminary descriptive analysis of a level 2 implementation process of the CMMI model in a Colombian software development company, making an overall presentation of how it was brought into practice the theory of the model in the processes of the company, to be compliant with the conditions, goals and practices defined in the level 2 process areas of the model. The article also describes the problems which arose in the execution of the project, as well as how they were solved. As preliminary results are presented some of the indicators defined by the company for the software processes, and the software tools that were acquired or developed for the support of the implementation of the process areas. Finally, some conclusions and recommendations which can be found.Ítem Aspectos metodológicos del proceso de adopción del estándar HL7v3 en Colombia: la experiencia del Comité Técnico de Casos de Uso de Laboratorio Clínico(Universidad Icesi, 2010-03-24T23:24:57Z) Villegas Machado, Norha Milena; Tamura Morimitsu, Gabriel; Tamura Morimitsu, GabrielThe clinical laboratory orders and results was the first Use Case Technical Committee (UCTC) which began operations in Colombia and the first one in proposing HL7 adapted standards for Colombia. The collaborative work among its members has been the basis for defining implementation guides for the clinical laboratory orders and results use cases. Additionally, as a pioneer UCTC in Colombia, it developed a guide-forguides proposal, i.e. a standard for defining implementation guides in any domain within the CDA scope. This article presents an overview of the evolution of health information systems in Colombia and the first steps that have been taken for the adoption of the HL7 international standard in the country. It also describes the methodology for the development and adaptation of the first HL7 implementation guides.Ítem Las Facultades de Ingeniería y Su Papel en la Definición de Políticas Públicas: Participación de la Universidad Icesi en la Definición del Estándar Colombiano de Interoperabilidad GEL-XML(ResearchGate, 2008-01-01) Tamura Morimitsu, GabrielThis paper presents the results of the Colombian HL7 foundation and the Icesi University joint efforts, in terms of the contribution of their work in the checking of interoperability properties the GEL-XML standards definition, which is being developed by the “Agenda de conectividad”, a program of the Colombian Communications Ministry. The GEL-XML standards collection is fundamental for the country because of its scope and impact in the electronic data exchange among its public and private entities. It is considered by the national government as one of the foundations for the e-government strategy, which in turn is one of the basements to achieve the so called “digital leap”