MEdit4CEP-SP: A model-driven solution to improve decision-making through user-friendly management and real-time processing of heterogeneous data streams

Organisations today are constantly consuming and processing huge amounts of data. Such datasets are often heterogeneous, making it difficult to work with them quickly and easily due to their format constraints or their disparate data structures. Therefore, being able to efficiently and intuitively work with such data to analyse them in real time to detect situations of interest as quickly as possible is a great competitive advantage for companies. Existing approaches have tried to address this issue by providing users with analytics or modelling tools in an isolated way, but not combining them as a onein- all solution. In order to fill this gap, we present MEdit4CEP-SP, a model-driven system that integrates Stream Processing (SP) and Complex Event Processing (CEP) technologies for consuming, processing and analysing heterogeneous data in real time. It provides domain experts with a graphical editor that allows them to infer and define heterogeneous data domains, while also modelling, in a user-friendly way, the situations of interest to be detected in such domains. These graphical definitions are then automatically transformed into code, which is deployed in the processing system at runtime. The alerts detected by the system, in real-time, allow users to react as quickly as possible, thus improving the decision-making process. Additionally, MEdit4CEP-SP provides persistence, storing these definitions in a NoSQL database to permit their reuse by other instances of the system. Further benefits of this system are evaluated and compared with other existing approaches in this paper.Las organizaciones hoy en día están constantemente consumiendo y procesando grandes cantidades de datos. Tales conjuntos de datos son a menudo heterogéneos, lo que dificulta trabajar con ellos de manera rápida y fácil debido a sus restricciones de formato o sus estructuras de datos dispares. Por lo tanto, ser capaz de trabajar de manera eficiente e intuitiva con estos datos para analizarlos en tiempo real para detectar situaciones de interés lo más rápido posible es una gran ventaja competitiva para las empresas. Los enfoques existentes han intentado abordar este problema proporcionando a los usuarios herramientas de análisis o modelado de forma aislada, pero no combinándolas como una solución todo en uno. Para llenar este vacío, presentamos MEdit4CEP-SP, un sistema impulsado por modelos que integra las tecnologías de Procesamiento de Flujo (SP) y Procesamiento de Eventos Complejos (CEP) para consumir, procesar y analizar datos heterogéneos en tiempo real. Proporciona a los expertos del dominio un editor gráfico que les permite inferir y definir dominios de datos heterogéneos, al mismo tiempo que modela, de una manera amigable para el usuario, las situaciones de interés a ser detectadas en dichos dominios. Estas definiciones gráficas se transforman automáticamente en código, que se despliega en el sistema de procesamiento en tiempo de ejecución. Las alertas detectadas por el sistema, en tiempo real, permiten a los usuarios reaccionar lo más rápido posible, mejorando así el proceso de toma de decisiones. Además, MEdit4CEP-SP proporciona persistencia, almacenando estas definiciones en una base de datos NoSQL para permitir su reutilización por otras instancias del sistema. Los beneficios adicionales de este sistema se evalúan y comparan con otros enfoques existentes en este documento.This work was partly supported by the Spanish Ministry of Science and Innovation and the European Regional Development Fund (ERDF) under project FAME (RTI2018-093608-B-C33), and also by the pre-doctoral program of the University of Cádiz, Spain (2017-020/PU/EPIF-FPI-CT/CP)

Survey of Technologies for Web Application Development

Web-based application developers face a dizzying array of platforms, languages, frameworks and technical artifacts to choose from. We survey, classify, and compare technologies supporting Web application development. The classification is based on (1) foundational technologies; (2)integration with other information sources; and (3) dynamic content generation. We further survey and classify software engineering techniques and tools that have been adopted from traditional programming into Web programming. We conclude that, although the infrastructure problems of the Web have largely been solved, the cacophony of technologies for Web-based applications reflects the lack of a solid model tailored for this domain.Comment: 43 page

Research Naval Postgraduate School, v.12, no.3, October 2002

NPS Research is published by the Research and Sponsored Programs, Office of the Vice President and Dean of Research, in accordance with NAVSOP-35. Views and opinions expressed are not necessarily those of the Department of the Navy.Approved for public release; distribution is unlimited

Deployment and Operation of Complex Software in Heterogeneous Execution Environments

This open access book provides an overview of the work developed within the SODALITE project, which aims at facilitating the deployment and operation of distributed software on top of heterogeneous infrastructures, including cloud, HPC and edge resources. The experts participating in the project describe how SODALITE works and how it can be exploited by end users. While multiple languages and tools are available in the literature to support DevOps teams in the automation of deployment and operation steps, still these activities require specific know-how and skills that cannot be found in average teams. The SODALITE framework tackles this problem by offering modelling and smart editing features to allow those we call Application Ops Experts to work without knowing low level details about the adopted, potentially heterogeneous, infrastructures. The framework offers also mechanisms to verify the quality of the defined models, generate the corresponding executable infrastructural code, automatically wrap application components within proper execution containers, orchestrate all activities concerned with deployment and operation of all system components, and support on-the-fly self-adaptation and refactoring

Web 3D for Public, Environmental and Occupational Health: Early Examples from Second Life®

Over the past three years (2006-2008), the medical/health and public health communities have shown a growing interest in using online 3D virtual worlds like Second Life® (http://secondlife.com/) for health education, community outreach, training and simulations purposes. 3D virtual worlds are seen as the precursors of ‘Web 3D’, the next major iteration of the Internet that will follow in the coming years. This paper provides a tour of several flagship Web 3D experiences in Second Life®, including Play2Train Islands (emergency preparedness training), the US Centers for Disease Control and Prevention—CDC Island (public health), Karuna Island (AIDS support and information), Tox Town at Virtual NLM Island (US National Library of Medicine - environmental health), and Jefferson’s Occupational Therapy Center. We also discuss the potential and future of Web 3D. These are still early days of 3D virtual worlds, and there are still many more untapped potentials and affordances of 3D virtual worlds that are yet to be explored, as the technology matures further and improves over the coming months and years

Space station systems: A bibliography with indexes (supplement 9)

This bibliography lists 1,313 reports, articles, and other documents introduced into the NASA scientific and technical information system between January 1, 1989 and June 30, 1989. Its purpose is to provide helpful information to researchers, designers and managers engaged in Space Station technology development and mission design. Coverage includes documents that define major systems and subsystems related to structures and dynamic control, electronics and power supplies, propulsion, and payload integration. In addition, orbital construction methods, servicing and support requirements, procedures and operations, and missions for the current and future Space Station are included

Web 3D for Public, Environmental and Occupational Health: Early Examples from Second Life®

Over the past three years (2006–2008), the medical/health and public health communities have shown a growing interest in using online 3D virtual worlds like Second Life® (http://secondlife.com/) for health education, community outreach, training and simulations purposes. 3D virtual worlds are seen as the precursors of ‘Web 3D’, the next major iteration of the Internet that will follow in the coming years. This paper provides a tour of several flagship Web 3D experiences in Second Life®, including Play2Train Islands (emergency preparedness training), the US Centers for Disease Control and Prevention—CDC Island (public health), Karuna Island (AIDS support and information), Tox Town at Virtual NLM Island (US National Library of Medicine - environmental health), and Jefferson’s Occupational Therapy Center. We also discuss the potential and future of Web 3D. These are still early days of 3D virtual worlds, and there are still many more untapped potentials and affordances of 3D virtual worlds that are yet to be explored, as the technology matures further and improves over the coming months and years