Fisimed : una herramienta informática (L.M.S.) para la ayuda en el proceso de enseñanza - aprendizaje de la Física Médica.

Monográfico con el título: 'Avances tecnológicos digitales en metodologías de innovación docente en el campo de las Ciencias de la Salud en España'. Resumen basado en el de la publicación

M-Learning en Ciencia : introducción de aprendizaje móvil en Física.

Resumen basado en el de la publicación

Apoyo adaptativo basado en IMS-LD y estrategias psicoeducativas para la familiarización de estudiantes con discapacidad con su entorno virtual de aprendizaje.

Monográfico con el título: 'Adaptación y accesibilidad de las tecnologías para el aprendizaje'. Resumen basado en el de la publicación

Adaptación de material educativo guiada por IMS Learning Design : experiencias con .LRN.

Monográfico con el título: 'Adaptación y accesibilidad de las tecnologías para el aprendizaje'. Resumen basado en el de la publicación

Sistema Inteligente de Tutorización Avanzada (SITA). Un caso de aplicación : GEKA.

El artículo está incluido en un número monográfico especial con los trabajos del I Simposio Pluridisciplinar sobre Diseño, Evaluación y Descripción de Contenidos Educativos Reutilizables (Guadalajara, Octubre 2004).Resumen basado en el de la publicación

Las Webquest en la docencia universitaria : aprendizaje colaborativo con LAMS.

Número especial dedicado al VII Simposio Pluridisciplinar sobre Diseño y Evaluación de Contenidos Digitales Educativos (SPDECE 2010).Resumen basado en el de la publicación

e-Autoevaluación en la universidad : un reto para profesores y estudiantes.

Monográfico con el título: 'Mejorar la escuela: perspectivas didácticas y organizativas'. Resumen basado en el de la publicación

Caso práctico de utilización de nuevas tecnologías en docencia de maquinaria de movimientos de tierras.

Resumen basado en el de la publicación

Implantaci??n de UBUVirtual en la Universidad de Burgos: evaluaci??n y expectativas de uso

Resumen tomado de la publicaci??n

Una revisi??n actualizada del concepto de eLearning : d??cimo Aniversario

Resumen basado en el de la publicaci??n

Plataformas virtuales e innovaci??n docente universitaria : affordance de una gu??a de trabajo aut??nomo en Antropolog??a para trabajar competencias de intervenci??n en contextos de diversidad

Resumen basado en el de la publicaci??n

Régimen jurídico de la seguridad alimentaria. De la policía administrativa a la gestión de riesgos

La policia administrativa, una de les més clàssiques formes d'intervenció pública en l'esfera jurídica dels particulars, ha vingut caracteritzant fins a temps recents l'acció administrativa en el sector dels aliments. No obstant, les limitacions que sembla presentar aquesta forma d'intervenció davant el riscos que avui emergeixen de tal sector, i en particular de l'industria alimentària, han propiciat la construcció d´un nou i, fins a cert punt, complex sistema, caracteritzat a grans trets per la intersecció entre agents públics i privats: els sistema d´anàlisis i gestió de riscos.

A longitudinal study of sero-conversion to tick-borne pathogens in smallholder dairy youngstock in Tanzania

A longitudinal study of sero-conversion of youngstock to the tick-borne pathogens Theileria parva, T mutans, Anaplasma marginale, Babesia bigemina and B. bovis was conducted over two years on smallholder dairy farms in Tanga region, Tanzania. There was evidence of maternal antibodies to all tick-borne pathogens in animals less than 18 weeks of age. Seroprevalence increased as expected with age in animals older than this but seroprevalence profiles underestimated the force of infection due to waning antibody levels between samplings. By the end of the 2-year study, less than 50% of study animals had seroconverted to each of the tick-borne pathogens investigated, consistent with the low levels of tick attachment observed on the study animals. Some associations between seroconversion to tick-borne pathogens, and counts of their known tick vectors on the animals, were identified as expected. However, some were not, suggesting that counts of some tick species may act as an index of rates of attachment of other vector species. Variation in acaricide treatment frequencies was not associated with variations in tick-borne pathogen seroprevalence suggesting that acaricides may be used more frequently than necessary on many farms. Most animals were zero-grazed, a management system associated with a significantly lower likelihood that animals seroconverted to any tick-borne pathogen exceptA. marginale. Seroprevalence varied locally with farm location (particularly for Babesia spp.) but was not well predicted by indices of ecological conditions. Our findings suggest that attempts to achieve a state of 'endemic stability' for tick-bome pathogens may be unreasonable on the smallholder dairy farms studied but reductions in the frequency of use of acaricides may be possible following prospective studies of effects on mortality and morbidity due to tick-bome pathogens. (c) 2005 Elsevier B.V. All rights reserved.

Prevalence and determinants of Cryptosporidium spp. infection in smallholder dairy cattle in Iringa and Tanga Regions of Tanzania

The prevalence of Cryptosporidium spp. infection in a cross-sectional study of dairy cattle, from two contrasting dairying regions in Tanzania, were determined by staining smears of faecal samples with the modified Ziehl-Neelsen technique. Of the 1126 faecal samples screened, 19.7% were positive for Cr\yptosporidium spp. The prevalence was lower in Tanga Region than in Iringa Region. The prevalence of affected farms was 20% in Tanga and 21 % in Iringa. In both regions, the probability of detecting Cryptosporidium oocysts in faeces varied with animal class, but these were not consistent in both regions. In Tanga Region, Cryptosporidium oocysts were significantly more likely to be found in the faeces of milking cows. In Iringa Region, the likelihood that cattle had Cryptosporidium-positive faeces declined with age, and milking cattle were significantly less likely to have Cryptosporidium-positive faeces. In this region, 7% of cattle were housed within the family house at night, and this was marginally associated with a higher likelihood that animals had Ctyptosporidium-positive faeces. Our study suggests that even though herd sizes are small, Cryptosporidium spp. are endemic on many Tanzanian smallholder dairy farms. These protozoa may impact on animal health and production, but also on human health, given the close associations between the cattle and their keepers. Further studies are required to assess these risks in more detail, and understand the epidemiology of Cryptosporidium spp. in this management system.

Effects of UV-blocking films on the dispersal behavior of Encarsia formosa (Hymenoptera : Aphelinidae)

The parasitoid Encarsia formosa Gahan (Hymenoptera: Aphelinidae) has been used successfully for the control of Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae). The development of UV-blocking plastic films has added a new component to future integrated pest management systems by disrupting insect pest infestation when UV light is excluded. Because both T. vaporariorum and E. formosa are reported to have similar spectral efficiency, there was a need to identify the impact of UV-blocking films on the dispersal behavior of both the pest and the natural enemy. In field studies, using choice-chamber experiments, E. formosa showed some preference to disperse into compartments where less UV light was blocked. However, further studies indicated that the effect was primarily attributable to the different light diffusion properties of the films tested. Thus, unlike its whitefly host, when the UV-absorbing properties of the films were similar, but the light diffusion properties differed, E.formosa adults preferred to disperse into compartments clad with films that had high light diffusion properties. When the plastic films differed most in their UV-absorbing capacity and had no light-diffusion capability, the initial dispersal of E. formosa between treatments was similar, although a small preference toward the environment with UV light was observed over time. When parasitoid dispersal was measured 3 h after release, more parasitoids were found on plants, suggesting that the parasitoids would search plants for whitefly hosts, even in a UV-blocked light environment. The potential for the integration of UV-blocking films with E. formosa in an advanced whitefly management system is discussed.