Internet y deficiencia auditiva: tecnología, utopía y accesibilidad

Dentro de las tecnologías de la Sociedad del Información(TSI), Internet es otro nuevo medio donde los deficientes auditivos encuentran la barrera de la accesibilidad. Nuestro caso de estudio fue un grupo de 9 alumnos de ESO, deficientes auditivos, escolarizados en el Colegio de Aransgui de Bergara. Hemos constatado que los alumnos tienen conocimiento de informática e Internet, que utilizan la red, pero que no se da una forma significativa de navegar, y que asumen un rol pasivo en la comunicación sincróna mediada por ordenador que nosotros atribuimos a los problemas de competencia lingüística.Among the technologies of the mass media-based society, Internet is another new medium which can present access barriers to the hearing impaired. Our case study was a group of 9 hearing impaired high school students from the Aransegui school in Bergara. We have determined that the students have a working knowledge of computer science and of Internet, they are familiar with the web, but they do not navigate in a meaningful way. The students assume a passive role in synchronic communication mediated by the computer that we attribute to problems of linguistic competence

Novel Metallic Alloys as Phase Change Materials for Heat Storage in Direct Steam Generation Applications

Concentrating Solar Power (CSP) is one of the key electricity production renewable energy technologies with a clear distinguishing advantage: the possibility to store the heat generated during the sunny periods, turning it into a dispatchable technology. Current CSP Plants use an intermediate Heat Transfer Fluid (HTF), thermal oil or inorganic salt, to transfer heat from the Solar Field (SF) either to the heat exchanger (HX) unit to produce high pressure steam that can be leaded to a turbine for electricity production, or to the Thermal Energy Storage (TES) system. In recent years, a novel CSP technology is attracting great interest: Direct Steam Generation (DSG). The direct use of water/steam as HTF would lead to lower investment costs for CSP Plants by the suppression of the HX unit. Moreover, water is more environmentally friendly than thermal oils or salts, not flammable and compatible with container materials (pipes, tanks). However, this technology also has some important challenges, being one of the major the need for optimized TES systems. In DSG, from the exergy point of view, optimized TES systems based on two sensible heat TES systems (for preheating of water and superheating vapour) and a latent heat TES system for the evaporation of water (around the 70% of energy) is the preferred solution. This concept has been extensively tested [1, 2, 3] using mainly NaNO3 as latent heat storage medium. Its interesting melting temperature (Tm) of 306°C, considering a driving temperature difference of 10°C, means TES charging steam conditions of 107 bar at 316°C and discharging conditions of 81bar at 296°C. The average value for the heat of fusion (ΔHf) of NaNO3 from literature data is 178 J/g [4]. The main disadvantage of inorganic salts is their very low thermal conductivity (0.5 W/m.K) requiring sophisticated heat exchanging designs. The use of high thermal conductivity eutectic metal alloys has been recently proposed [5, 6, 7] as a feasible alternative. Tms of these proposed eutectic alloys are too high for currently available DSG solar fields, for instance the Mg49-Zn51 alloy melts at 342°C requiring saturated steam pressures above 160 bar to charge the TES unit. Being aware of this, novel eutectic metallic alloys have been designed reducing the Tms to the range between 285°C and 330°C (79bar and 145bar of charging steam pressure respectively) with ΔHfs between 150 and 170 J/g, and thus achieving metallic Phase Change Materials (PCM) suitable for the available DSG technologies.European Comission's FP

Model for the Prediction of Deformations in the Manufacture of Thin-Walled Parts by Wire Arc Additive Manufacturing Technology

Gas Metal Arc Welding (GMAW) is a manufacturing technology included within the differentWire Arc Additive Manufacturing alternatives. These technologies have been generating great attention among scientists in recent decades. Its main qualities that make it highly productive with a large use of material with relatively inexpensive machine solutions make it a very advantageous technology. This paper covers the application of this technology for the manufacture of thin-walled parts. A finite element model is presented for estimating the deformations in this type of parts. This paper presents a simulation model that predicts temperatures with less than 5% error and deformations of the final part that, although quantitatively has errors of 20%, qualitatively allows to know the deformation modes of the part. Knowing the part areas subject to greater deformation may allow the future adaptation of deposition strategies or redesigns for their adaptation. These models are very useful both at a scientific and industrial level since when we find ourselves with a technology oriented to Near Net Shape (NNS) manufacturing where deformations are critical for obtaining the final part in a quality regime.This research was funded by the vice-counseling of technology, innovation and competitiveness of the Basque Government grant agreement kk-2019/00004 (PROCODA project) and the QUALYFAM project, through the ELKARTEK 2020 (KK-2020/00042) and the ADIFIX project funded by HAZITEK 2019 and 2020 (ZL-2019/00738, ZL-2020/00073) programs and the Spanish Government CDTI-Red Cervera Programme (EXP 00123730/IDI-20191162)

Pixel-Bit

Resumen basado en el de la publicaciónDentro de las Tecnologías de la Sociedad del Información (TSI), Internet es otro nuevo medio donde los deficientes auditivos encuentran la barrera de la accesibilidad. Se presenta un caso de estudio con un grupo de 9 alumnos de ESO, deficientes auditivos, escolarizados en el Colegio de Aransgui de Bergara (Guipúzcoa). Se constata que los alumnos tienen conocimiento de informática e Internet, que utilizan la Red, pero que no se da una forma significativa de navegar, y que asumen un rol pasivo en la comunicación síncrona mediada por ordenador que se atribuye a los problemas de competencia lingüística.AndalucíaBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín, 5 - 3 planta; 28014 Madrid; Tel. +34917748000; [email protected]

Jardunbide egokien gidaliburua. Irakasleak eta irakurketaren irakaskuntza

Existe una versión en español, con el título "Guía de buenas prácticas. El profesorado ante la enseñanza de la lectura”Conocedores de la importancia que tiene una correcta enseñanza de la lectura en la prevención del fracaso lector y escolar y en un marco de coordinación y colaboración del Departamento de Educación, Universidades e Investigación con DISLEBI, asociación vinculada a las dificultades especificas de aprendizaje relacionadas con trastornos de la lectura, escritura y cálculo, dicho departamento ha reunido a un equipo de profesionales de la Educación para elaborar el presente documento dirigido principalmente al profesorado de la Etapa Infantil, Primaria y Secundaria. En el documento se enfoca el aprendizaje de la lectura desde una doble vertiente: la del aprendizaje del código escrito y la de la comunicación a través del lenguaje escrito.Ondo irakurtzen irakasteak garrantzi handia du irakurle onak sortu eta eskola-porrotari aurrea hartzeko. Horren jakitun, Eusko Jaurlaritzako Hezkuntza, Unibertsitate eta Ikerketa Sailak hezkuntza-arloko profesionalen talde bat osatu du, dokumentu hau presta dezan, Haur Hezkuntzako, Lehen Hezkuntzako eta Bigarren Hezkuntzako irakasleentzat nagusiki. DISLEBI elkartearekiko koordinazioaren eta elkarlanaren esparruan egin du hori; hain zuzen ere, ikasteko zailtasun espezifikoekin lan egiten du elkarte horrek, irakurmenaren, idazmenaren eta kalkuluaren trastornoen esparruan. Dokumentuak bi ikuspegitatik aztertzen du irakurketaren ikaskuntza: idatzizko kodea ikastearen ikuspegitik eta idatzizko hizkuntzaren bidez komunikatzearen ikuspegitik.ES