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We report the synthesis, crystal structure and photo-magnetic properties of novel Tb/Eu polymeric complexes of general formula {TbxEu1−x(α-fur)3(H2O)3}n, supported by 2-furancarboxilic acid: the homonuclear Tb(III) complex {Tb} (1), four heterodinuclear complexes, {Tb0.8Eu0.2} (2), {Tb0.7Eu0.3} (3), {Tb0.3Eu0.7} (4), and {Tb0.1Eu0.9} (5), and the homonuclear Eu(III)-only complex {Eu} (6). X-ray diffraction experiments show that the α-furoate ligands, acting in bridging mode, consolidate the 1D polymeric chains along the c-axis. Luminescence studies show the sensitization capability of the furoic acid ligand. Color tuning from green to red can be successfully achieved through the heterodinuclear strategy. We have measured Eu emission by direct excitation at the resonant 7F0 → 5L6 (395 nm), and indirectly, by excitation of the non-resonant wavelength (280 nm) which provokes ligand → Tb → Eu energy transfer. Besides, ac susceptibility measurements under varying frequencies and temperatures reveal that mixed {TbxEu1−x} complexes exhibit field-induced slow relaxation dynamics, with extremely slow relaxation times, owing to direct processes affected by the bottleneck effect. Thus, the {TbxEu1−x} complexes represent interesting low-dimensional multifunctional materials combining both luminescent and SMM magnetic properties.

Resumen del trabajo presentado a la 21st International Conference on Magnetism (ICM), celebrada en San Francisco (US) del 15 al 20 de julio de 2018., The self-assembly of magnetic molecules on supporting surfaces provides potentially very interesting magnetic nano-devices. In a previous work we have evaporated wheel molecules of formula {Cr10(OMe)20(O2CCMe3)10}, abbreviated {Cr10} (Fig. 1a), by direct sublimation in UHV on a Ag(110) single-crystal. In powder form, the Cr-Cr interaction may be ferro- or antiferromagnetic, yielding to a paramagnetic molecule with ground state S=9 (implying that two Cr spins lie anti-parallel to the other eight, at T and H zero). For the powder the χT increases below 10 K, indicating average intracluster ferromagnetic behavior. In this work, the molecules are deposited onto the Au(111) surface. The STM image in Fig. 1b shows a monolayer of {Cr10} molecules, self-organized in a quasi-hexagonal 2D network. XMCD measurements were performed on the monolayer (1ML) and multilayer (14 ML) samples at the L2,3 edges of Cr at T=1.8 K and magnetic field up to μoH=6T. Magnetization and susceptibility were measured by SQUID magnetometry on the powder and the 14 ML samples (Fig. 2). In contrast to the powder sample, the 14 ML sample shows an overall intracluster antiferromagnetic coupling (χT decreases below 10 K). The M(H) XMCD determination of the {Cr10} 14 ML scales nicely to the SQUID measurement, with absolute values of the average Cr moment (mCr=1.89 μB). The M(H) XMCD for the 1ML sample is lower than the 14ML, evidencing a quenching effect of the substrate on mCr. Neither of the ML’s show any anisotropy. Monte-Carlo simulations for the {Cr10}, performed considering Cr(III) as individual S=3/2 spin entities coupled via Heisenberg interactions, allow to determine the exchange constants for the powder and 14 ML samples. In short, the self-assembly of 1ML {Cr10} molecules on Au(111) modifies the Cr-Cr intramolecular exchange pathways leading to a dominant antiferromagnetic intracluster coupling, and decreases the average Cr magnetic moment.

La motivación y la inteligencia emocional aparecen como dos importantes aspectos de la educación de los jóvenes, cuya relación en Educación Física ha sido poco estudiada. Bajo la teoría de la autodeterminación, el estudio analizó las relaciones existentes entre la inteligencia emocional (IE) y la motivación de los estudiantes en las clases de Educación Física (EF). Se utilizó una muestra de 170 estudiantes pertenecientes al primer ciclo de Educación Secundaria Obligatoria (E.S.O) de un centro de Gibraleón (Huelva). Los instrumentos empleados fueron: la versión española del Trait Meta-Mood Scale (TMMS), una adaptación para EF del Cuestionario de Clima Motivacional Percibido (PMCSQ-2), el Cuestionario de Necesidades Psicológicas Básicas (BPNS), y la Escala del Locus Percibido de Causalidad (PLOC). Los resultados del análisis de correlación mostraron relaciones entre las variables clima motivacional, necesidades psicológicas y motivación en línea con la teoría de la autodeterminación. Los factores de la IE percibida correlacionaron con el clima motivacional, con algunas necesidades psicológicas y con las diferentes formas de motivación, aunque con un coeficiente de correlación bajo. Por su parte, se destaca que en los análisis de regresión la claridad emocional predijo positivamente la regulación introyectada. Son necesarios más estudios que permitan profundizar en esta relación.Palabras clave. Inteligencia Emocional, Motivación, Educación Secundaria Obligatoria, Educación Física.Abstract. Motivation and emotional intelligence appear as two important aspects of education of young people, whose relationship in Physical Education is an understudied topic. Based on the Self-Determination Theory, the study analyzed the relationship between emotional intelligence and motivation in physical education students. A sample of 170 students from the first cycle of compulsory secondary education in Gibraleón (Huelva) was used. The instruments used were: the Trait Meta-Mood Scale (TMMS), the Perceived Motivational Climate Questionnaire (PMCSQ-2), the Basic Psychological Needs Questionnaire (BPNS) and the Perceived Locus of Causality Scale (PLOC). The results of correlation analysis showed relationships between motivational climate, psychological needs and motivation in line with Self-Determination Theory. The three dimensions of emotional intelligence (Attention, Clarity, and Mood Repair) correlated with perceived motivational climate, with some psychological needs and the different forms of motivation, although with a low correlation coefficient. The regression analysis showed that emotional clarity predicted positively the introjected regulation. Further studies are necessary to enable us to deepen our understanding of the relationship between emotional intelligence and motivation in PE classes.Keywords. Emotional Intelligence, Motivation, Secondary Education, Physical Education

WOS: 000398117600023, PubMed ID: 28025382, Background. From an individual participant data (IPD) meta-analysis from four randomized controlled trials comparing haemodialysis (HD) with post-dilution online-haemodiafiltration (ol-HDF), previously it appeared that HDF decreases all-cause mortality by 14% (95% confidence interval 25; 1) and fatal cardiovascular disease (CVD) by 23% (39; 3). Significant differences were not found for fatal infections and sudden death. So far, it is unclear, however, whether the reduced mortality risk of HDF is only due to a decrease in CVD events and if so, which CVD in particular is prevented, if compared with HD. Methods. The IPD base was used for the present study. Hazard ratios and 95% confidence intervals for cause-specific mortality overall and in thirds of the convection volume were calculated using the Cox proportional hazard regression models. Annualized mortality and numbers needed to treat (NNT) were calculated as well. Results. Besides 554 patients dying from CVD, fatal infections and sudden death, 215 participants died from 'other causes', such as withdrawal from treatment and malignancies. In this group, the mortality risk was comparable between HD and ol-HDF patients, both overall and in thirds of the convection volume. Subdivision of CVD mortality in fatal cardiac, non-cardiac and unclassified CVD showed that ol-HDF was only associated with a lower risk of cardiac casualties [0.64 (0.61; 0.90)]. Annual mortality rates also suggest that the reduction in CVD death is mainly due to a decrease in cardiac fatalities, including both ischaemic heart disease and congestion. Overall, 32 and 75 patients, respectively, need to be treated by high-volume HDF (HV-HDF) to prevent one all-cause and one CVD death, respectively, per year. Conclusion. The beneficial effect of ol-HDF on all-cause and CVD mortality appears to be mainly due to a reduction in fatal cardiac events, including ischaemic heart disease as well as congestion. In HV-HDF, the NNT to prevent one CVD death is 75 per year., EuDial working group; European Nephrology and Dialysis Institute; Catalan Society of Nephrology; Fresenius Medical Care; Dutch Kidney Foundation [C02.2019]; Fresenius Medical Care, Netherlands; Gambro Lundia AB, Sweden; Dr E.E. Twiss Fund; International Society of Nephrology/Baxter Extramural Grant Program; Netherlands Organization for Health Research and DevelopmentNetherlands Organization for Health Research and Development [170882802]; national grant from the Health Ministry (Programme Hospitalier de Recherche Clinique, PHRC); Gambro through the Catalan Society of Nephrology; Roche Netherlands, The HDF Pooling project was designed, conducted and analysed independently of the financial contributors of the individual studies as listed below. Study data were collected and retained by the investigators and were not available for the financial contributors of the individual studies. S.A.E.P. and the meetings of the representatives of the combined authors of the four studies were financially supported by the EuDial working group. EuDial is an official working group of the European Renal Association-European Dialysis Transplant Association (ERA-EDTA, http://era-edta.org/eudial/European_Dialysis_Working_Group.html). No industry funding was received for any part of or activity related to the present analysis.; The Turkish HDF study was supported by European Nephrology and Dialysis Institute with an unrestricted grant. The study was performed in Fresenius Medical Care haemodialysis clinics in Turkey. ESHOL was supported by The Catalan Society of Nephrology and by grants from Fresenius Medical Care and Gambro through the Catalan Society of Nephrology. The CONTRAST study was supported by a grant from the Dutch Kidney Foundation (Nierstichting Nederland Grant C02.2019), and unrestricted grants from Fresenius Medical Care, Netherlands, and Gambro Lundia AB, Sweden. Additional support was received from the Dr E.E. Twiss Fund, Roche Netherlands, the International Society of Nephrology/Baxter Extramural Grant Program, and the Netherlands Organization for Health Research and Development (ZONMw Grant 170882802). The French HDF study was supported by a national grant from the Health Ministry (Programme Hospitalier de Recherche Clinique, PHRC) as a means to improve care and outcome of elderly chronic disease patients.

El objetivo del estudio fue examinar y profundizar en las motivaciones de los jugadores de baloncesto adolescentes para seguir practicando su deporte. La muestra estuvo compuesta por un total de 6 jugadores de baloncesto (3 chicas y 3 chicos), con edades comprendidas entre los 14 y los 16 años. Se empleó una entrevista semi-estructurada con preguntas abiertas a cada deportista. Se realizó un análisis de contenido de las transcripciones de las entrevistas, en el que se empleó un procedimiento deductivo. Los resultados revelaron que los siguientes factores tienen una gran importancia para que los jugadores de baloncesto entrevistados mantengan su práctica: una motivación autodeterminada para practicar, la satisfacción de sus necesidades psicológicas, el clima de apoyo a la autonomía que genera el entrenador, así como la relación con éste, el apoyo familiar y la posibilidad de poder compatibilizar con los estudios. En esta línea, se pone de manifesto la necesidad de emplear estrategias para ayudar a que los deportistas adopten formas de motivación autodeterminadas, generar un clima de apoyo a la autonomía en los entrenamientos y en la competición, que facilite la satisfacción de las tres necesidades psicológicas y que, además, el adolescente cuente con el apoyo familiar en las diversas facetas de su vida; todo ello es fundamental para garantizar la adherencia a la práctica entre los jóvenes jugadores de baloncesto Abstract: Te aim of the study was to examine and deepen the motivations of teenage basketball players to continue practicing their sport. Te sample consisted of a total of 6 basketball players (3 girls and 3 boys), aged between 14 and 16 years. A semi-structured interview with open questions was used each athlete. A content analysis of the transcripts of the interviews, in which a deductive procedure was used was performed. Te results revealed that the following factors are very important for players interviewed basketball maintain their practice: a self-determined motivation to practice, to satisfy their psychological needs, the climate of autonomy support generated by the coach and the relationship with it, family support and the possibility to reconcile with studies. In this line, it highlights the need for strategies to help athletes adopt forms of self-determined motivation, create a climate of support for autonomy in training and competition, to facilitate the satisfaction of the three psychological needs and also, the teenager has the family support in the various facets of his life; this is essential to ensure adherence to the practice among young basketball players. Resumo: O propósito do estudo foi aprofundar conhecimentos sobre as motivações dos jogadores de basquetebol adolescentes para promover a sua adesão esporte no futuro, en numa amostra de adolescentes de 6 jogadores de basquete (3 meninas e 3 meninos) e com idades compreendidas entre os 14 e 16 anos. Para tal, foi utilizado como instrumento de trabalho uma entrevista semi-estruturada com perguntas abertas par cada atleta. Foi realizada uma análise de conteúdo das transcrições das entrevistas. Os resultados revelaram que os seguintes fatores são muito importantes para manter sua participação de esportes: motivação auto-determinada para a prática, satisfazer as suas necessidades psicológicas, clima de apoio autonomia gerado pelo treinador eo relacionamento com ele, apoio familiar ea possibilidade de conciliar com os estudos. Nesta linha, destaca a necessidade de estraté- gias para ajudar os atletas adotam formas de motivação auto-determinada, criar um clima de apoio para a autonomia em treinamento e competição, para facilitar a satisfação das três necessidades psicológicas e também, o adolescente tem o apoio da família nas várias facetas da sua vida; isto é essencial para garantir a adesão à prática entre os jovens jogadores de basquete

The crossover from antidot to dot magnetic behavior on arrays patterned in a ferromagnetic thin film has been achieved by modifying only the geometry. A series of antidot arrays has been fabricated on cobalt with fixed diameter d and by reducing the period of the array p from pd to p

El objetivo del estudio fue detectar posibles perfiles motivacionales en una muestra de deportistas adolescentes. Además, el estudio analizó las diferencias en los subfactores del clima motivacional percibido y en la satisfacción de las necesidades psicológicas básicas de los diferentes perfiles encontrados. Se utilizó una muestra de 608 deportistas, con una edad media de 14.43 años. Se midió el clima motivacional percibido (PMCSQ-2), los mediadores psicológicos (BPNES) y la motivación en el deporte (SMS). El análisis de cluster reveló dos perfiles: un perfil altamente motivado, con puntuaciones altas tanto en formas de motivación autodeterminada (motivación intrínseca y regulación identificada) como en motivación no autodeterminada (regulación introyectada y externa), salvando la desmotivación; y un perfil moderadamente motivado, con puntuaciones moderadas (en torno a 3 y 4) en formas de motivación autodeterminada y no autodeterminada. En el análisis multivariante de los subfactores del clima motivacional percibido y de las necesidades piscológicas básicas según el perfil, se encontraron diferencias significativas a favor del perfil altamente motivado tanto en los subfactores del clima motivacional tarea como ego, así como en los tres mediadores psicológicos. Se discuten los resultados en función de la importancia de fomentar un clima que implique a la tarea y que trate de satisfacer las necesidades de autonomía, competencia y relación con los demás durante los entrenamientos para obtener perfiles motivacionales más autodeterminados.

El estudio analizo la prediccion del clima motivacional percibido, la satisfaccion de las necesidades psicologicas basicas y la motivacion intrinseca sobre la adherencia a la practica deportiva. Se utilizo una muestra de 580 deportistas con una edad media de 14.46 anos. Se emplearon el Cuestionario del Clima Motivacional Percibido en el Deporte-2, la Escala de las Necesidades Psicologicas Basicas en el Ejercicio, el factor motivacion intrinseca de la Escala de Motivacion Deportiva y la Medida de la Intencionalidad para ser Fisicamente Activo. Los resultados del modelo de ecuaciones estructurales mostraron que el clima motivacional que implica a la tarea predecia las tres necesidades psicologicas basicas y la intencion de seguir siendo fisicamente activo. Por otro lado, el clima motivacional que implica al ego predecia la necesidades de autonomia y de competencia, aunque con un peso de regresion en ambos casos mucho menor que como lo hacia el clima tarea. La satisfaccion de las tres necesidades psicologicas basicas predijo positivamente la motivacion intrinseca. Por su parte, la motivacion intrinseca predijo la intencion de ser fisicamente activo en el futuro. Se discuten los resultados en relacion a la importancia de fomentar un clima motivacional tarea en los practicantes para incrementar la adherencia a la practica deportiva. Palabras clave : clima motivacional; motivacion; teoria de la autodeterminacion; adherencia al deporte. Abstract The study analyzed the prediction of perceived motivational climate, basic psychological needs satisfaction and intrinsic motivation on adherence to sports. A sample of 580 athletes with a mean age of 14.46 years, participated in the study. The Perceived Motivational Climate in Sport Questionnaire-2, the Basic Psychological Needs in Exercise Scale, the intrinsic motivation factor of the Sport Motivation Scale and Intention of Being Physically Active were used. Structural equation modeling results showed that the task-involving motivational climate positively predicted the three basic psychological needs and the intention to practice physical activity into the future. Moreover, the ego-involving motivational climate predicted autonomy and competence needs, although with regression weight in both cases much less than it did the the task-involving motivational climate. The satisfaction of the three basic psychological needs positively predicted intrinsic motivation. Besides, intrinsic motivation predicted the intention to be physically active in the future. Results are discussed in relation to the importance of promoting a task-involving motivational climate to increase adherence to sport. Key words : motivational climate; motivation; self-determination theory; adherence to sports. doi:10.5232/ricyde2011.02501 ------------------------------------------------------------------------------------- Referencias/references Deci, E. L., & Ryan, R. M. (2000). The “what” and “why” of goal pursuits: Human needs and the self-determination of behaviour. Psychological Inquiry, 11, 227-268. doi:10.1207/S15327965PLI1104_01 Gagne, M.; Ryan, R. M., & Bargmann, K. (2003). Autonomy support and need satisfaction in the motivation and well-being of gymnasts. Journal of Applied Sport Psychology, 15, 372-390. doi:10.1080/714044203 Hein, V.; Muur, M., & Koka, A. (2004). Intention to be physically active after school graduation and its relationship to three types of intrinsic motivation. European Physical Education Review, 10, 5-19. doi:10.1177/1356336X04040618 Hu, L., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6, 1-55. doi:10.1080/10705519909540118 Kowal, J., & Fortier, M. S. (2000). Testing relationships from the hierarchical model of intrinsic and extrinsic motivation using flow as a motivational consequence. Research Quarterly for Exercise and Sport, 71, 171-181. PMid:10925814 Le Bars, H.; Gernigon, C., & Ninot, G. (2009). Personal and contextual determinants of elite young athletes’ persistence or dropping out over time. Scandinavian Journal of Medicine and Science in Sports, 19, 274-285. doi:10.1111/j.1600-0838.2008.00786.x PMid:18384491 Lim, B. S. C., & Wang, C. K. J. (2009). Perceived autonomy support, behavioural regulations in physical education and physical activity intention. Psychology of Sport and Exercise, 10, 52-60. doi:10.1016/j.psychsport.2008.06.003 Mageau, G. A., & Vallerand, R. J. (2003). The coach-athlete relationship: a motivational model. Journal of Sports Sciences, 21, 883-904. doi:10.1080/0264041031000140374 PMid:14626368 Marsh, H.W.; Hau, K.T., & Wen, Z. (2004). In search of golden rules: Comment on hypothesis-testing approaches to setting cutoff values for fit indexes and dangers in overgeneralizing Hu & Bentler’s (1999) findings. 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PMid:20167951 Reinboth, M., & Duda, J. L. (2006). Perceived motivational climate, need satisfaction and indices of well-being in team sports: A longitudinal perspective. Psychology of Sport and Exercise, 7, 269-286. doi:10.1016/j.psychsport.2005.06.002 Sarrazin, P.; Vallerand, R.; Guillet, E.; Pelletier, L., & Cury, F. (2002). Motivation and dropout in female handballers: A 21-month prospective study. European Journal of Social Psychology, 32, 395-418. doi:10.1002/ejsp.98 Standage, M.; Duda, J. L., & Ntoumanis, N. (2006). Students’ motivational processes and their relationship to teacher ratings in school physical education: A self-determination theory approach. Research Quarterly for Exercise and Sport, 77, 100-110. PMid:16646357 Sproule, J.; Wang, C. K. J.; Morgan, K.; McNeills, M., M Amorose, A. J., & Wilko, A. M. (2009). Coaching behaviors, motivational climate, and psychosocial outcomes among female adolescent athletes. Pediatric Exercise Science, 21, 475-492. PMid:20128366

The aim of the present study was identify the most significant problems that Spanish novice physical education teachers encountered during their first teaching experiences. A mixed methodology (quantitative and qualitative) was utilized through questionnaires and interviews. The Inventory of Teaching Problems developed by Jordell (1985) was translated, revalidated to physical education and completed by 45 novice teachers. From the entire sample, 6 teachers we randomly selected to be interviewed by the main researcher. The results allowed identifying and emphasizing the follow- ing problems: organization and control of the class, the low social status of physical education, the scarcity of material resources and facilities, the relationships, the planning, and the teaching methodology. However, the gender effect was not statistically significant. The results allow suggesting that the establishment of specific, continuing educational programmes for novice teachers seems imperative.

The purpose of this study was to test a motivational model of the coach-athlete relationship, based on self-determination theory and on the hierarchical model of intrinsic and extrinsic motivation. The sample comprised of 608 athletes (ages of 12-17 years) completed the following measures: interest in athlete's input, praise for autonomous behavior, perceived autonomy, intrinsic motivation, and the intention to be physically active. Structural equation modeling results demonstrated that interest in athletes' input and praise for autonomous behavior predicted perceived autonomy, and perceived autonomy positively predicted intrinsic motivation. Finally, intrinsic motivation predicted the intention to be physically active in the future. The results are discussed in relation to the importance of the climate of autonomy support created by the coach on intrinsic motivation and adherence to sport by adolescent athletes. Further, the results provide information related to the possible objectives of future interventions for the education of coaches, with the goal of providing them with tools and strategies to favor the development of intrinsic motivation among their athletes. In conclusion, the climate of autonomy support created by the coach can predict the autonomy perceived by the athletes which predicts the intrinsic motivation experienced by the athletes, and therefore, their adherence to athletic practice. Key pointsImportance of the climate of autonomy support created by the coach on intrinsic motivation and adherence to sport by adolescent athletes.Interest in athletes' input and praise for autonomous behavior predicted perceived autonomy, and perceived autonomy positively predicted intrinsic motivation.Intrinsic motivation predicted the intention to be physically active in the future.

The intracluster exchange interactions within the "butterfly" Fe3Ln(µ3-O)2(CCl3COO)8(H2O)(THF)3] molecules, where Ln(III) represents a lanthanide cation, have been determined by a combination of x-ray magnetic circular dichroism (XMCD) and vibrating sample magnetometry (VSM) along with an interaction model. We have studied the compounds with Ln=Tb and Ho, both non-Kramers lanthanides and with high uniaxial anisotropy, and Ln=Lu(III) and Y(III) as pseudolanthanides, which supply nonmagnetic Ln reference cases. At low temperature, the three Fe atoms can be considered as a self-unit with total spin SFe3=5/2. Using the element selectivity of the XMCD magnetometry, measured at the Ln L2,3 edges, together with the VSM measurements, the local magnetization of the Ln ion and the Fe3 subcluster, as a function of the field and low temperature (T˜2.5K), has been determined separately. These results are described quantitatively in the framework of a theoretical model based on an effective spin Hamiltonian, which considers the competing effects of intracluster interactions and the external applied magnetic field. The Ln-Fe3 exchange interaction within the {Fe3LnO2} cluster has been determined to be antiferromagnetic, in both Tb and Ho compounds, with JFeTb/kB=-0.13(1)K and JFeHo/kB=-0.18(1)K, respectively. In both cases, a field-induced reorientation of the Fe3 and Ln spins from antiparallel to parallel orientation takes place at a threshold field µ0H=1.1 and 2 T, for the {Fe3TbO2} and {Fe3HoO2} compounds, respectively. By comparison with other compounds of the series with uniaxial anisotropy, it is concluded that the polarizability of the Fe3 subcluster magnetic moment decreases in the trend {Fe3YO2}¿{Fe3TbO2}¿{Fe3HoO2}¿{Fe3DyO2}, because of the increasing opposition of the exchange antiferromagnetic field caused by the Ln ion. In the Ln=Tb, Ho, and Dy, the magnetization of the whole molecule is dominated by the anisotropy of the Ln ion. The intracluster Fe3-Ln exchange interactions are very weak compared to the Ln ligand field and Fe-Fe exchange interactions.

Scanning tunneling microscopy and x-ray absorption spectroscopic results at the Fe K edge of Fe phthalocyanine (FePc) thin films grown on Au substrates, together with theoretical calculations, allow us to refine the structure of the film. In particular, we show that the columnar stacking of the FePc molecules is different from that found in bulk a and ß phases. Moreover, the molecules do not lay parallel to the surface of the substrate. These structural findings are relevant to understand magnetism of FePc films.

Este proyecto consiste en crear una implementación Android del intérprete VoiceXML de código abierto JVoiceXML (Java VoiceXML) permitiendo así la ejecución de aplicaciones basadas en el estándar VoiceXML en la plataforma Android. Como demostrador se crea una aplicación llamada Help Desk que imita un centro de ayuda de una aplicación de música en streaming tipo Spotify. El fin del proyecto es permitir que los desarrolladores puedan portar sus aplicaciones VoiceXML existentes a Android sin esfuerzo o también crear otras sólo para Android aprovechando la potencia del estándar VoiceXML. Los desarrolladores pueden entonces de una manera sencilla mejorar la accesibilidad de sus aplicaciones para las personas con déficit de visión pronunciado utilizando interfaces de voz para el control de las mismas., This project consists of creating an Android implementation of the open source VoiceXML interpreter JVoiceXML thus allowing for the execution of VoiceXML based applications on the Android platform. To demonstrate it an application called Help Desk is created. This application mimics a help desk of a music streaming application such as Spotify. The goal of the project is to allow developers to port their existing VoiceXML applications to Android with no effort or create Android specific apps enjoying the power of the VoiceXML standard. Therefore developers will be able to easily improve their apps accessibility for people with severe vision problems by means of voice interfaces.