Search results for "ICAD"
showing 10 items of 1297 documents
La telecolaboración entre grupos heterogéneos en la clase de lengua extranjera
2014
[ES] En la enseñanza de lenguas extranjeras, numerosos profesores trabajan las competencias lingüísticas y comunicativas por medio de actividades que incluyen las TIC. Entre ellas, se encuentran los proyectos de telecolaboración por Internet, intercambios asincrónicos y sincrónicos, entre grupos de estudiantes pertenecientes a diferentes comunidades lingüísticas distantes geográficamente. Nuestro objetivo ha consistido en comprobar si un proyecto de telecolaboración sincrónico entre grupos heterogéneos de estudiantes, con distintos perfiles y niveles en lengua extranjera, es factible y si contribuye al desarrollo de las competencias comunicativas, intercuturales y tecnológicas.
La pedagogía de las multiliteracidades y la experiencia estética como elementos clave en la enseñanza y el aprendizaje de lenguas. Por la consolidaci…
2019
Referencias bibliográficas: p. 28-31. En el contexto de una enseñanza de lenguas que forma parte de una educación integral en la que la lectura y los procesos interpretativos, emocionales y creativos juegan un papel central, el presente artículo presenta la evolución del concepto de literacidad y la valoración de la experiencia estética como objetivos educativos. La pedagogía de las multiliteracidades y la experiencia estética conforman un nuevo paradigma en la enseñanza de lenguas. En relación a estos conceptos, se muestra una investigación sobre creencias y actuaciones de maestros en formación. Abstract: In the context of language teaching understood as part of a whole education in which …
Lenguaje formulaico del alemán en páginas web hoteleras de los países de lengua alemana: un estudio basado en paquetes léxicos
2021
El presente trabajo estudia el lenguaje formulaico de las páginas web hoteleras de países de lengua alemana a partir de la identificación y el análisis de paquetes léxicos (lexical bundles). Se trata de una investigación basada en metodología de lingüística de corpus sobre la frecuencia, estructura y funciones de este tipo de secuencias del lenguaje formulaico. Nuestro principal objetivo ha consistido en realizar un inventario de los paquetes léxicos más característicos de estos textos y determinar las variaciones de los mismos, a partir de la identificación de marcos frasales, que hemos puesto en correspondencia. Dicho inventario ha sido objeto de análisis y clasificación siguiendo criteri…
Keys to success in investment rounds by immigrant entrepreneurs in Silicon Valley
2019
[EN] This study presents an updated diagnosis of the SV ecosystem itself and offers an insight into the entrepreneurial mobility trends prospects and expectations of the growing number of start-ups launched by immigrant entrepreneurs arriving in SV. The purpose is to determine and rank the attributes most valued by investors when assessing projects and start-ups founded by immigrant entrepreneurs. The model of analysis composed by three hypotheses leads to a series of findings about the profile and expectations of the immigrant entrepreneurs, and reveals remarkable hints and key targets to be met by immigrant entrepreneurs in SV in order to successfully close investment rounds in a hypercom…
Monetary valuation of salicylic acid, methylparaben and THCOOH in a Mediterranean coastal wetland through the shadow prices methodology
2018
The presence of pharmaceutical and personal care products and drugs of abuse (PPCPs) in wastewater treatment plants (WWTPs) indicates discharge of the effluent may not be suitable for the ecological balance of water ecosystems, such as wetlands. These PPCPs degrade water quality, considered as an ecosystem service (ES), provoking serious environmental impacts. Assessing the monetary value of PPCPs can be used as a proxy for environmental status of the ES of water quality (ESWQ). Considering PPCPs as non-desirable outputs of WWTPs, the shadow prices methodology has been implemented using directional distance function to measure the environmental avoided cost of removing salicylic acid (SA), …
Shadow prices of emerging pollutants in wastewater treatment plants: Quantification of environmental externalities.
2017
Conventional wastewater treatment plants (WWTPs) are designed to remove mainly the organic matter, nitrogen and phosphorus compounds and suspended solids from wastewater but are not capable of removing chemicals of human origin, such as pharmaceutical and personal care products (PPCPs). The presence of PPCPs in wastewater has environmental effects on the water bodies receiving the WWTP effluents and renders the effluent as unsuitable as a nonconventional water source. Considering PPCPs as non-desirable outputs, the shadow prices methodology has been implemented using the output distance function to measure the environmental benefits of removing five PPCPs (acetaminophen, ibuprofen, naproxen…
High-pressure structural and vibrational properties of monazite-type BiPO4, LaPO4, CePO4, and PrPO4
2018
[EN] Monazite-type BiPO4, LaPO4, CePO4, and PrPO4 have been studied under high pressure by ab initio simulations and Raman spectroscopy measurements in the pressure range of stability of the monazite structure. A good agreement between experimental and theoretical Raman-active mode frequencies and pressure coefficients has been found which has allowed us to discuss the nature of the Raman-active modes. Besides, calculations have provided us with information on how the crystal structure is modified by pressure. This information has allowed us to determine the equation of state and the isothermal compressibility tensor of the four studied compounds. In addition, the information obtained on th…
High-pressure structural and elastic properties of Tl2O3
2014
The structural properties of Thallium (III) oxide (Tl2O3) have been studied both experimentally and theoretically under compression at room temperature. X-ray powder diffraction measurements up to 37.7 GPa have been complemented with ab initio total-energy calculations. The equation of state of Tl2O3 has been determined and compared to related compounds. It has been found experimentally that Tl2O3 remains in its initial cubic bixbyite-type structure up to 22.0 GPa. At this pressure, the onset of amorphization is observed, being the sample fully amorphous at 25.2 GPa. The sample retains the amorphous state after pressure release. To understand the pressure-induced amorphization process, we h…
Pressure Impact on the Stability and Distortion of the Crystal Structure of CeScO3
2017
[EN] The effects of high pressure on the crystal structure of orthorhombic (Pnma) perovskite-type cerium scandate were studied in situ under high pressure by means of synchrotron X-ray powder diffraction, using a diamond-anvil cell. We found that the perovskite-type crystal structure remains stable up to 40 GPa, the highest pressure reached in the experiments. The evolution of unit-cell parameters with pressure indicated an anisotropic compression. The room-temperature pressure¿volume equation of state (EOS) obtained from the experiments indicated the EOS parameters V0 = 262.5(3) Å3 , B0 = 165(7) GPa, and B0¿ = 6.3(5). From the evolution of microscopic structural parameters like bond distan…
First-order linear differential equations whose data are complex random variables: Probabilistic solution and stability analysis via densities
2022
[EN] Random initial value problems to non-homogeneous first-order linear differential equations with complex coefficients are probabilistically solved by computing the first probability density of the solution. For the sake of generality, coefficients and initial condition are assumed to be absolutely continuous complex random variables with an arbitrary joint probability density function. The probability of stability, as well as the density of the equilibrium point, are explicitly determined. The Random Variable Transformation technique is extensively utilized to conduct the overall analysis. Several examples are included to illustrate all the theoretical findings.