Effect of a video on developing skills in undergraduate nursing students for the management of totally implantable central venous access ports

Background: Handling Totally Implantable Access Ports (TIAP) is a nursing procedure that requires skill and knowledge to avoid adverse events. No studies addressing this procedure with undergraduate students were identified prior to this study. Communication technologies, such as videos, have been increasingly adopted in the teaching of nursing and have contributed to the acquisition of competencies for clinical performance. Objective: To evaluate the effect of a video on the puncture and heparinization of TIAP in the development of cognitive and technical competencies of undergraduate nursing students. Method: Quasi-experimental study with a pretest-posttest design. Results: 24 individuals participated in the study. Anxiety scores were kept at levels 1 and 2 in the pretest and posttest. In relation to cognitive knowledge concerning the procedure, the proportion of correct answers in the pretest was 0.14 (SD=0.12) and 0.90 in the posttest (SD=0.05). After watching the video, the average score obtained by the participants in the mock session was 27.20. Conclusion: The use of an educational video with a simulation of puncture and heparinization of TIAP proved to be a strategy that increased both cognitive and technical knowledge. This strategy is viable in the teaching-learning process and is useful as a support tool for professors and for the development of undergraduate nursing students. (C) 2011 Elsevier Ltd. All rights reserved.

Flow Boiling Characteristics for R1234ze(E) in 1.0 and 2.2 mm Circular Channels

Experimental flow boiling heat transfer results are presented for horizontal 1.0 and 2.2 mm I. D. (internal diameter) stainless steel tubes for tests with R1234ze(E), a new refrigerant developed as a substitute for R134a with a much lower global warming potential (GWP). The experiments were performed for these two tube diameters in order to investigate a possible transition between macro and microscale flow boiling behavior. The experimental campaign includes mass velocities ranging from 50 to 1500 kg/m(2) s, heat fluxes from 10 to 300 kW/m(2), exit saturation temperatures of 25, 31 and 35 degrees C, vapor qualities from 0.05 to 0.99 and heated lengths of 180 mm and 361 mm. Flow pattern characterization was performed using high speed videos. Heat transfer coefficient, critical heat flux and flow pattern data were obtained. R1234ze(E) demonstrated similar thermal performance to R134a data when running at similar conditions. [DOI: 10.1115/1.4004933]

Discrimination of media moments and media intervals: sticker-based watch-and-comment annotation

In this paper we discuss the problem of how to discriminate moments of interest on videos or live broadcast shows. The primary contribution is a system which allows users to personalize their programs with previously created media stickers-pieces of content that may be temporarily attached to the original video. We present the system's architecture and implementation, which offer users operators to transparently annotate videos while watching them. We offered a soccer fan the opportunity to add stickers to the video while watching a live match: the user reported both enjoying and being comfortable using the stickers during the match-relevant results even though the experience was not fully representative.

Competência informacional e midiática no ensino superior: Desafios e propostas para o Brasil

A presença das tecnologias e das mídias é hoje tão importante, que é impossível ignorá-la. Os calouros e estudantes universitários de hoje têm telefones celulares com fotos digitais e ídeos. Eles usam blogs, twitter e sites de redes sociais. Ao mesmo tempo, leem livros e artigos, e fazem seus projetos e a lição de casa. Continuamente, diferentes tecnologias e novas informações estão impactando o ensino superior. Isto exige uma rápida atualização da competência informacional e midiática pelos alunos. Apesar do impacto progressivo da tecnologia digital na cultura acadêmica contemporânea, é imperativo resgatar e consolidar um compromisso mais crítico com a informação, mídia e tecnologia. Nós defendemos a convergência da literacia da informação e da literacia dos media no ensino superior. O Projeto CIMES (Competência em Informação e Mídia no Ensino Superior) está em estágio inicial. O presente artigo tem como objetivo revisar as questões teóricas, políticas e práticas sobre a educação para a competência em informação e mídia no ensino superior, especialmente no Brasil. O objetivo final do Projeto CIMES é fornecer uma estrutura para desenvolver programas educacionais no Brasil que tenham a competência em informação e a competência midiática como uma aplicação transversal no ensino superior. O atual estágio do projeto permite apenas traçar um quadro geral analítico

Dynamic texture segmentation based on deterministic partially self-avoiding walks

Recently there has been a considerable interest in dynamic textures due to the explosive growth of multimedia databases. In addition, dynamic texture appears in a wide range of videos, which makes it very important in applications concerning to model physical phenomena. Thus, dynamic textures have emerged as a new field of investigation that extends the static or spatial textures to the spatio-temporal domain. In this paper, we propose a novel approach for dynamic texture segmentation based on automata theory and k-means algorithm. In this approach, a feature vector is extracted for each pixel by applying deterministic partially self-avoiding walks on three orthogonal planes of the video. Then, these feature vectors are clustered by the well-known k-means algorithm. Although the k-means algorithm has shown interesting results, it only ensures its convergence to a local minimum, which affects the final result of segmentation. In order to overcome this drawback, we compare six methods of initialization of the k-means. The experimental results have demonstrated the effectiveness of our proposed approach compared to the state-of-the-art segmentation methods.

¿Qué he hecho yo para merecer esto?

Seis videos a color. I Jornadas de Enfermería celebradas en Lanzarote entre los días 8 al 10 de octubre de 1992, bajo el título de ¿Qué he hecho yo para merecer esto?, con sedes en el Auditorio de los Jameos del agua y en Sala de Audiencia del Fondeadero del Puerto del Carmen ?Tías, se presentaron distintas ponencias y comunicaciones a las mismas, con títulos tan sugerentes como: Dos enfermeras y un programa, ¿Me dejas que te coma el coco?, Yo soy esa, Y yo con estos pelos, ¿Quién, cómo, cuándo y dónde?, La bien pagá, Suave que me estás matando, Ha nacido una estrella, Nena, tu vales mucho, Lo que era, lo que soy, que seré, Quiéreme aunque te duela, Si tú me dices ven, Cuentos inmorales entre otras. Organizadas por la Dirección de Enfermería Hospital General de Lanzarote, la Escuela Universitaria de Enfermería Lanzarote de la Universidad de Las Palmas de Gran Canaria y el Ilustre Colegio Oficial de Enfermería de Las Palmas. En el acto de apertura se contó con la Coral San Ginés y se cerraron con una mesa redonda. Es una grabación de Producciones Nandi.

Identificación visual en ambientes subacuáticos

[ES] Los erizos de mar han servido como modelo prototípico de organismo en el desarrollo de la Biología. La irrupción de este animal como especie invasora en los fondos canarios, combinada con el éxito reproductivo que ha tenido en nuestras aguas, ha creado un problema medioambiental importante que se ha intentado atajar con la puesta en marcha de proyectos e iniciativas orientados a su erradicación (matanzas masivas) o su contención con intentos de estimular su explotación comercial para uso gastronómico. En el transcurso de este trabajo se pretende explorar la robustez con la que se pueden clasificar visualmente diferentes tipos de erizos (principalmente Diadema antillarumy y Erizos autóctonos) a partir tanto de imágenes estáticas como de secuencias de vídeo para evaluar si, mediante el empleo de técnicas de visión por computador, es posible resolver estas tareas mediante la inspección automática de vídeos e imágenes.

Gestión de vídeo distribuido

[ES] El principal objetivo de este Trabajo Final de Grado (TFG) fue la creación de un sistema de gestión de vídeo distribuido utilizando cámaras de videovigilancia IP. Esta propuesta surgió a partir de la idea de ofrecer un acceso simultáneo, tanto online como offline, a las secuencias de vídeo generadas por una red de cámaras IP en un entorno dado. El resultado obtenido fue una infraestructura software ampliable  que ofrece al usuario una serie de funcionalidades con cámaras de red, abstrayéndolo de detalles internos. El trabajo está compuesto por tres elementos claramente diferenciados: integración de cámaras IP, almacenamiento en vídeo y creación del sistema de vídeo distribuido. La integración de cámaras IP tiene como objetivo comunicar al equipo con la cámara de red para la obtención del flujo de imágenes que transmite. Dicha comunicación se establece vía HTTP (Hypertext Transfer Protocol) gracias a la interfaz de programación (API) de la que disponen estos dispositivos. El segundo elemento, el almacenamiento en vídeo, tiene como función guardar las imágenes de la cámara IP en archivos de vídeo. De esta manera se ofrece su posterior visualización en diferido. Finalmente, el sistema de vídeo distribuido permite la reproducción simultánea de múltiples vídeos grabados por la red de cámaras IP. Adicionalmente, vídeos grabados por otros dispositivos también son admitidos. El material desarrollado dispone del potencial necesario para convertirse en una herramienta libre de amplio uso en sistemas UNIX para cámaras IP, así como suponer la base de futuros proyectos relacionados con estos dispositivos.

Estimación del movimiento de objetos en secuencias de imágenes de intensidad y profundidad

Máster Universitario en Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI)

Desarrollo de una aplicación web para la gestión de rutas en sistemas georreferenciados

[ES] El objetivo que se pretendía alcanzar con la realización de este proyecto era desarrollar una aplicación web 2.0 capaz de gestionar rutas independientemente de su tipología u otro tipo de características. El usuario de la aplicación construida tras analizar este proyecto puede crear rutas y modificarlas. Para su visualización se ha optado por un entorno 3D que muestra el globo terráqueo de manera realista: Google Earth en su versión como complemento para navegadores. La variedad de rutas creadas puede ser muy amplia, como por ejemplo: las etapas de la Vuelta Ciclista a España, la travesía de una competición náutica, el recorrido que siguió Colón en su primer viaje a América o los caminos reales de Canarias. Las rutas se crean desplazando el ratón y haciendo clic sobre la superficie del globo terráqueo. La aplicación muestra una línea que pasa por los puntos indicados con la representación de la ruta. Para las rutas creadas el usuario puede añadir una serie de elementos multimedia que permitan obtener un mayor conocimiento de dichas rutas. La aplicación permite añadir fotos, vídeos web, documentos y elementos 3D. Cuando el usuario seleccione mostrar una ruta creada previamente a la que le ha añadido alguno de los elementos indicados previamente, éste se visualizará en el navegador. Además de la posibilidad de gestionar rutas, el usuario también puede gestionar sitios de su interés de manera sencilla. El usuario puede incorporar localizaciones de diversa índole a su biblioteca de elementos para disponer de una mejor accesibilidad de sus lugares predilectos. Los sitios de interés creados aparecen en el globo como un icono junto con su nombre.

A video database for facial behavior understanding

[EN]The use of new technologies in order to step up the inter- action between humans and machines is the main proof that faces are important in videos. Therefore we suggest a novel Face Video Database for development, testing and veri cation of algorithms related to face- based applications and to facial recognition applications. In addition of facial expression videos, the database includes body videos. The videos are taken by three di erent cameras, working in real time, without vary- ing illumination conditions.

Teaching and learning english phonetics and phonology in the EHEA through design and creation of audiovisual material at the ULPGC

[ES]In this paper we describe the procedure followed in the design and recording of a set of videos for teaching and learning ‘English phonetics and phonology’, a second-year undergraduate course at Universidad de Las Palmas de Gran Canaria. The student’s L1 is Spanish. Two different types of technological support were used: screencast and Powerpoint® presentations. The traditional whiteboard together with the lecturer’s presence also contributed both to the integrated learning of certain acoustic/articulatory aspects of the course contents and to the use of specific software for speech analysis. This video production owns the advantage of being an interactive and autonomous tool which favours a continuous learning process on the student’s side.

Exploring the use of local descriptors for fish recognition in LifeCLEF 2015

[EN]This paper summarizes the proposal made by the SIANI team for the LifeCLEF 2015 Fish task. The approach makes use of standard detection techniques, applying a multiclass SVM based classifier on large enough Regions Of Interest (ROIs) automatically extracted from the provided video frames. The selection of the detection and classification modules is based on the best performance achieved for the validation dataset consisting of 20 annotated videos. For that dataset, the best classification achieved for an ideal detection module, reaches an accuracy around 40%.

Study accompaniment with E-Assessments

[EN]In this paper we present our concept of a virtual classroom for mathematics lectures in the study beginning phase. It describes the two main elements the course uses within our Learning Management System. The first element is the dynamic e-tests-method and the second interactive teaching videos. The tests are already in active use. Therefore, initial experience and feedback are described. The videos are in the prototype status. Therefore here only the evaluation approaches are described.

Quality of experience in skype video calls

Skype is one of the well-known applications that has guided the evolution of real-time video streaming and has become one of the most used software in everyday life. It provides VoIP audio/video calls as well as messaging chat and file transfer. Many versions are available covering all the principal operating systems like Windows, Macintosh and Linux but also mobile systems. Voice quality decreed Skype success since its birth in 2003 and peer-to-peer architecture has allowed worldwide diffusion. After video call introduction in 2006 Skype became a complete solution to communicate between two or more people. As a primarily video conferencing application, Skype assumes certain characteristics of the delivered video to optimize its perceived quality. However in the last years, and with the recent release of SkypeKit1, many new Skype video-enabled devices came out especially in the mobile world. This forced a change to the traditional recording, streaming and receiving settings allowing for a wide range of network and content dynamics. Video calls are not anymore based on static ‘chatting’ but mobile devices have opened new possibilities and can be used in several scenarios. For instance, lecture streaming or one-to-one mobile video conferences exhibit more dynamics as both caller and callee might be on move. Most of these cases are different from “head&shoulder” only content. Therefore, Skype needs to optimize its video streaming engine to cover more video types. Heterogeneous connections require different behaviors and solutions and Skype must face with this variety to maintain a certain quality independently from connection used. Part of the present work will be focused on analyzing Skype behavior depending on video content. Since Skype protocol is proprietary most of the studies so far have tried to characterize its traffic and to reverse engineer its protocol. However, questions related to the behavior of Skype, especially on quality as perceived by users, remain unanswered. We will study Skype video codecs capabilities and video quality assessment. Another motivation of our work is the design of a mechanism that estimates the perceived cost of network conditions on Skype video delivery. To this extent we will try to assess in an objective way the impact of network impairments on the perceived quality of a Skype video call. Traditional video streaming schemes lack the necessary flexibility and adaptivity that Skype tries to achieve at the edge of a network. Our contribution will lye on a testbed and consequent objective video quality analysis that we will carry out on input videos. We will stream raw video files with Skype via an impaired channel and then we will record it at the receiver side to analyze with objective quality of experience metrics.