Digital workflow for the design, construction and management of natural bamboo pole structures

The ever-growing global urbanisation has been lately associated with a negative environmental impact caused by the energy consumption and carbon dioxide emissions that the building industry has been responsible for. To turn the tide, the building industry needs to transition from industrialised, non-renewable materials, to natural, sustainable and renewable ones. Bamboo poles are currently the most promising resource due to their relatively good environmental credentials, in comparison with industrialised materials. However, there are significant technical challenges that have prevented bamboo poles from their formal integration into the building industry. One of the main challenges is associated with the inherent variability of the geometric, physical and mechanical properties and the impact that this produces on the reliability of bamboo structures. This research focuses on the development of a digital workflow that tackles the inherent variability of bamboo poles through the quantification of material properties on every single pole and thus, provides the fundamental basis to ensure structural reliability. Reverse engineering methodologies supported by modern digital technologies, such as 3D scanners and robotic fabrication, were developed to intensively measure the geometric, physical and mechanical properties of a stock of bamboo poles, regardless their species, age or size. These methodologies were then integrated and implemented into a proof-of-concept digital workflow that quantifies the variability and uses the resulting data to design and construct a reciprocal frame bamboo structure. This research sets out the initial steps towards an alternative approach that allows the design and construction of reliable bamboo structures through the management of their digital data, which in turn, will allow bamboo poles to competing with industrialised construction materials

O primeiro contacto com as narrações multimodais no âmbito de um curso de profissionalização docente em contexto on-line

Relatamos a exploração da Narração Multimodal (NM) enquanto instrumento em contexto on-line, na Universidade Aberta, durante o curso de profissionalização em serviço de docentes do ensino básico e secundário para o grupo de recrutamento 550 (Informática, Ministério da Educação da República Portuguesa), na unidade curricular Seminário de Prática Pedagógica. Das várias tarefas solicitadas aos formandos, a exploração de NM ocorreu nos 3.º, 4.º e 6.º tópicos de aprendizagem. Neste capítulo apresentamos os aspetos que apresentaram maiores fragilidades e os que foram corretamente executados antes e após feedback, no 1.º contacto com a NM (que ocorreu no 3.º tópico). O 1.º contacto com as NM revelou-se desafiante para os formandos, tanto na sua execução inicial como na melhoria das fragilidades identificadas. De quatro categorias analisadas, verificou-se que a maior incidência de fragilidades ocorreu nas categorias referentes aos aspetos que enriquecem a NM. Nas categorias referentes à estrutura e às características da NM, apesar de terem apresentado vários tipos de fragilidades, as NM foram concluídas com êxito, após colmatadas e resolvidas as fragilidades por recurso a feedback. Recomenda-se que em futuras abordagens haja adaptação dos materiais e de práticas de apoio pedagógico.info:eu-repo/semantics/publishedVersio

Distributed training of deep neural networks with spark: The MareNostrum experience

Deployment of a distributed deep learning technology stack on a large parallel system is a very complex process, involving the integration and configuration of several layers of both, general-purpose and custom software. The details of such kind of deployments are rarely described in the literature. This paper presents the experiences observed during the deployment of a technology stack to enable deep learning workloads on MareNostrum, a petascale supercomputer. The components of a layered architecture, based on the usage of Apache Spark, are described and the performance and scalability of the resulting system is evaluated. This is followed by a discussion about the impact of different configurations including parallelism, storage and networking alternatives, and other aspects related to the execution of deep learning workloads on a traditional HPC setup. The derived conclusions should be useful to guide similarly complex deployments in the future.Peer ReviewedPostprint (author's final draft

Influencia de la temperatura del agua en la resistencia del concreto 175 kg/cm2 a 3810 msnm, Puno - 2022

El presente investigación elaborada en la ciudad de Puno, tuvo como objetivo determinar la influencia de la temperatura del agua en la resistencia del concreto, se elaboró muestras de concreto con temperatura de agua de 5°C, 14°C, 28°C, 50°C y 70°C; con curado a temperatura ambiental de 14°C; los resultados a los 28 días de edad. Validan que las muestras elaboradas con agua a 28°C y 50°C lograron mayor resistencia. Sin embargo las muestras elaboradas con agua a 5°C y 14°C obtuvieron una resistencia de compresión 134.5 kg/cm2 y 165.85 kg/cm2, lo que indica que no alcanzaron la resistencia de diseño de mescla (175 kg/cm2), por otro lado las muestras que fueron elaboradas con agua a temperatura 70°C igualaron la resistencia calculada; Verificándose que la temperatura del agua influye en la resistencia a la compresión uniaxial del concreto, a medida que se incrementa más la temperatura del agua influye de manera favorable para obtener mayor resistencia a la compresión uniaxial y desfavorece el asentamiento del concreto. Los resultados, nos permite argumentar que la temperatura del agua óptima (patrón) para la elaboración del concreto es 50°C, por haberse obtenido la mayor resistencia a la compresión uniaxial

Non-verbal aspects of collaboration in virtual worlds: a CSCW taxonomy-development proposal integrating the presence dimension

Virtual worlds, particularly those able to provide a three-dimensional physical space, have features that make them suitable to support collaborative activities. These features distinguish virtual worlds from other collaboration tools, but current taxonomies of the field of Computer-Supported Cooperative Work do not account for several distinctive features of virtual worlds, namely those related with non-verbal communication. We intended to find out how the use of an avatar, gestures, spatial sounds, etc., influence collaboration in order to be able to include non-verbal communication in taxonomies of the field Computer-Supported Cooperative Work. Several cases of collaboration in virtual worlds are analysed, to find the impact of these non-verbal characteristics of virtual worlds. We proposed adding the concept of Presence to taxonomies of Computer-Supported Cooperative Work and contribute with guidance for future taxonomy development that includes it as a new dimension. This new dimension of Presence is subdivided into "avatar" and "physical space" subdimensions. In turn, these are divided into "physical appearance", "gestures, sounds and animations" and "focus, nimbus and aura"; "environment" and "objects / artefacts". This new taxonomy-development proposal may contribute to inform better design of virtual worlds in support of cooperative work.info:eu-repo/semantics/publishedVersio

Long short-term memory networks for earthquake detection in Venezuelan regions

Reliable earthquake detection and location algorithms are necessary to properly catalog and analyze the continuously growing seismic records. This paper reports the results of applying Long Short-Term Memory (LSTM) networks to single-station three-channel waveforms for P-wave earthquake detection in western and north central regions of Venezuela. Precisely, we apply our technique to study the seismicity along the dextral strike-slip Boconó and La Victoria - San Sebastián faults, with complex tectonics driven by the interactions between the South American and Caribbean plates.Peer ReviewedPostprint (author's final draft

ANGINA INESTABLE. PROPUESTA DE PROTOCOLO DE TRATAMIENTO EN EL HOSPITAL

Unstable angina is an acute coronary syndrome without elevation of the ST segment. It is clinically important because of its threatening and crippling nature, due to the possibility that it could precede acute myocardial infarction. That is why it is determined that the patient suffering from this condition must be hospitalized in the Intensive Care Unit. There are various therapeutic strategies and several forms to approach the treatment of each patient, but in many cases it is necessary a percutaneous coronary intervention and this procedure is not carried out in this hospital. That is why it is necessary to establish a guideline for the treatment of this condition with the aim of optimizing the medications and making an adequate selection of the patients who require being transferred to a hospital with interventional cardiology services. A proposal for treatment protocol is presented in this work. It can function as a guideline for those who on daily basis treat patient with this condition at the Roberto Rodriguez Fernandez University Hospital in Morón city

Collaboration in 3D virtual worlds: designing a protocol for case study research

Three-dimensional virtual worlds (3DVW) have been growing fast in number of users, and are used for the most diverse purposes. In collaboration, 3DVW are used with good results due to features such as immersion, interaction capabilities, use of avatar embodiment, and physical space. In the particular cases of avatar embodiment and physical space, these features support nonverbal communication, but its impact on collaboration is not well known. In this work we present the initial steps for creation of a protocol for case study research, aiming to assert itself as a tool to collect data on how nonverbal communication influences collaboration in 3DVW. We define the propositions and units of analysis, and a pilot case to validate them

La incorporación de la preocupación ambiental en la formación profesional en Colombia : Un análisis situado en el Servicio Nacional de Aprendizaje durante el período 1968-1993

Esta investigación tuvo un enfoque cualitativo de tipo exploratorio. Se utilizaron fuentes secundarias y centró su interés en indagar cómo ha sido el desarrollo histórico de la inclusión de las preocupaciones ambientales en el Servicio Nacional de Aprendizaje (SENA) para el periodo comprendido entre 1968 y 1993. Como estrategia metodológica, se apoyó en la propuesta de “coreografía” del análisis cualitativo propuesta por Hernández-Sampieri y Torres (2018). El análisis documental incluyó la producción de contenidos y recursos didácticos presentes en el repositorio Institucional. La unidad de análisis seleccionó 50 documentos de los 4055 documentos disponibles en las bases de datos del repositorio del Sistema de Bibliotecas del SENA, en donde reposa una parte significativa de la producción y memoria institucional de la entidad. Lo anterior, permitió rastrear la evolución histórica de la preocupación medioambiental, los enfoques del concepto de ambiente y las estrategias didácticas de la educación ambiental que se han empleado en la formación profesional, a la luz de los cambios normativos y de la política educativo ambiental tanto a nivel global como en el seno del SENA. El recorte espacio temporal tuvo como punto de partida la creación del INDERENA (Instituto Nacional de los Recursos Naturales Renovables) en el año de 1968 y culminó con la creación del SINA (Sistema Nacional Ambiental) a través de la Ley 99 de 1993. Para abordar la inclusión de las preocupaciones medioambientales dentro de la formación profesional integral y del SENA, primero reconstruimos los rasgos generales de los debates entre los 70s y 90s, relacionados con la emergencia y consolidación de la educación ambiental en el contexto internacional y nacional. Luego describimos las formas y características que tuvo dicha inclusión a partir del análisis documental, en donde se identificaron y ubicaron las concepciones de ambiente y los enfoques de educación ambiental a partir del análisis de los materiales didácticos. Y finalmente reconocemos la participación de algunos agentes que aportaron en esta discusión al interior de la institución.Facultad de Humanidades y Ciencias de la Educació

Aplicações híbridas para smart homes

Dissertação de mestrado em Engenharia InformáticaInternet of Things concept has achieved a huge popularity in the last years due to the quality of life its use is able to provide its users. Among the several areas where this concept is applied, Smart Homes are one of the most popular, which are increasingly a reality in our daily lives. In a smart home, in addition to the IoT devices and a Hub that connects them to each other, it’s indispensable the use of an application that allows the management of their equipment, regardless of the location around the house. In this context, whenever a company decides to invest in this business sector, among which several decisions are made in the initial phase of the project, stands out the choice of the type of application to be developed to control the different equipment. This choice may prove difficult due to the little information available regarding the behavior of application types changes in this context. The goal of this dissertation is to study one of the existing types of applications, hybrid applications, and to bridge the analysis results in the development of one that allows the management of a smart home. This application will allow the analysis of the behavior of hybrid applications in the context of Smart Homes, providing study tools for the evolution of this business area.O conceito de Internet of Things alcançou uma enorme popularidade ao longo dos últimos anos graças à qualidade de vida que a sua utilização consegue proporcionar aos seus utilizadores. Entre as diversas áreas onde este conceito é aplicado, destacam-se as Smart Homes, ou casas inteligentes, que são cada vez mais uma realidade no nosso quotidiano. Numa casa inteligente, para além dos dispositivos de IoT e de um Hub que os conecta entre si, é indispensável a existência de uma aplicação que possibilite ao utilizador a gestão integrada dos seus equipamentos, independentemente da localização destes pela casa. Nesse sentido, sempre que uma empresa decide investir neste setor de negócio, entre as diversas decisões que são tomadas na fase inicial do projeto, destaca-se a escolha do tipo de aplicação a desenvolver para controlar os diferentes equipamentos. Esta escolha pode revelar-se difícil devido à pouca informação existente no que diz respeito ao comportamento das respetivas tipologias neste contexto. O objetivo desta dissertação passa por estudar uma das tipologias de aplicações existentes, as híbridas, e colmatar os resultados da análise no desenvolvimento de uma aplicação que possibilite a gestão de uma casa inteligente. A sua conceção irá permitir a análise do comportamento das aplicações híbridas no contexto das Smart Homes, fornecendo assim ferramentas de estudo para o desenvolvimento deste setor