4,312 research outputs found
"Innovatio educativa tertio millennio": 12 years evoluting from learning from learning to teaching in courses on educational innovation and collaboration with the UNESCO chair of mining and industrial heritage
Twelve years ago a group of teachers began to work in educational innovation. In 2002 we received an award for educational innovation, undergoing several stages. Recently, we have decided to focus on being teachers of educational innovation. We create a web scheduled in Joomla offering various services, among which we emphasize teaching courses of educational innovation. The “Instituto de Ciencias de la Educacion” in “Universidad Politécnica de Madrid” has recently incorporated two of these courses, which has been highly praised. These courses will be reissued in new calls, and we are going to offer them to more Universities. We are in contact with several institutions, radio programs, the UNESCO Chair of Mining and Industrial Heritage, and we are working with them in the creation of heritage courses using methods that we have developed
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La obsolescencia programada es una práctica emergente en la producción de bienes y servicios, por medio de la cual el productor reduce el tiempo de vida útil de los bienes comercializados; el presente ensayo, tiene como objetivo analizar y establecer si la ausencia de información de un producto que adolece de obsolescencia programada, afecta el derecho de información del consumidor final y por ende el principio de buena fe, siendo la información del producto un derecho a favor del consumidor y un deber del productor y proveedor en la etapa precontractual en las relaciones de consumo.Programmed obsolescence is an emerging practice in the production of goods and services, through which the producer reduces the useful life of the goods traded; The objective of this essay is to analyze and establish if the lack of information on a product that suffers of programmed obsolescence affects the right to information of the final consumer and therefore the principle of good faith, being the information about the product a right in favor of the consumer and a duty of the producer and supplier in the pre-contractual stage in consumer relations.Especialista en Derecho ComercialEspecializació
Neuroergonomic Assessment of Wheelchair Control Using Mobile fNIRS
For over two centuries, the wheelchair has been one of the most common assistive devices for individuals with locomotor impairments without many modifications. Wheelchair control is a complex motor task that increases both the physical and cognitive workload. New wheelchair interfaces, including Power Assisted devices, can further augment users by reducing the required physical effort, however little is known on the mental effort implications. In this study, we adopted a neuroergonomic approach utilizing mobile and wireless functional near infrared spectroscopy (fNIRS) based brain monitoring of physically active participants. 48 volunteers (30 novice and 18 experienced) self-propelled on a wheelchair with and without a PowerAssist interface in both simple and complex realistic environments. Results indicated that as expected, the complex more difficult environment led to lower task performance complemented by higher prefrontal cortex activity compared to the simple environment. The use of the PowerAssist feature had significantly lower brain activation compared to traditional manual control only for novices. Expertise led to a lower brain activation pattern within the middle frontal gyrus, complemented by performance metrics that involve lower cognitive workload. Results here confirm the potential of the Neuroergonomic approach and that direct neural activity measures can complement and enhance task performance metrics. We conclude that the cognitive workload benefits of PowerAssist are more directed to new users and difficult settings. The approach demonstrated here can be utilized in future studies to enable greater personalization and understanding of mobility interfaces within real-world dynamic environments
Ideas and perspectives: Allocation of carbon from net primary production in models is inconsistent with observations of the age of respired carbon
Carbon allocation in vegetation is an important process in the terrestrial carbon cycle; it determines the fate of photoassimilates, and it has an impact on the time carbon spends in the terrestrial biosphere. Although previous studies have highlighted important conceptual issues in the definition and metrics used to assess carbon allocation, very little emphasis has been placed on the distinction between the allocation of carbon from gross primary production (GPP) and the allocation from net primary production (NPP). An important number of simulation models and conceptual frameworks are based on the concept that C is allocated from NPP, which implies that C is respired immediately after photosynthetic assimilation However, empirical work that estimates the age of respired CO2 from vegetation tissue (foliage, stems, roots) shows that it may take from years to decades to respire previously produced photosynthates. The transit time distribution of carbon in vegetation and ecosystems, a metric that provides an estimate of the age of respired carbon, indicates that vegetation pools respire carbon of a wide range of ages, on timescales that are in conflict with the assumption that autotrophic respiration only consumes recently fixed carbon. In this contribution, we attempt to provide compelling evidence based on recent research on the age of respired carbon and the theory of timescales of carbon in ecosystems, with the aim to promote a change in the predominant paradigm implemented in ecosystem models where carbon allocation is based on NPP. In addition, we highlight some implications for understanding and modeling carbon dynamics in terrestrial ecosystems
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Nonannual tree rings in a climate-sensitive Prioria copaifera chronology in the Atrato River, Colombia
In temperate climates, tree growth dormancy usually ensures the annual nature of tree rings, but in tropical environments, determination of annual periodicity can be more complex. The purposes of the work are as follows: (1) to generate a reliable tree‐ring width chronology for Prioria copaifera Griseb. (Leguminoceae), a tropical tree species dwelling in the Atrato River floodplains, Colombia; (2) to assess the climate signal recorded by the tree‐ring records; and (3) to validate the annual periodicity of the tree rings using independent methods. We used standard dendrochronological procedures to generate the P. copaifera tree‐ring chronology. We used Pearson correlations to evaluate the relationship of the chronology with the meteorological records, climate regional indices, and gridded precipitation/sea surface temperature products. We also evaluated 24 high‐precision 14C measurements spread over a range of preselected tree rings, with assigned calendar years by dendrochronological techniques, before and after the bomb spike in order to validate the annual nature of the tree rings. The tree‐ring width chronology was statistically reliable, and it correlated significantly with local records of annual and October–December (OND) streamflow and precipitation across the upper river watershed (positive), and OND temperature (negative). It was also significantly related to the Oceanic Niño Index, Pacific Decadal Oscillation, and the Southern Oscillation Index, as well as sea surface temperatures over the Caribbean and the Pacific region. However, 14C high‐precision measurements over the tree rings demonstrated offsets of up to 40 years that indicate that P. copaifera can produce more than one ring in certain years. Results derived from the strongest climate–growth relationship during the most recent years of the record suggest that the climatic signal reported may be due to the presence of annual rings in some of those trees in recent years. Our study alerts about the risk of applying dendrochronology in species with challenging anatomical features defining tree rings, commonly found in the tropics, without an independent validation of annual periodicity of tree rings. High‐precision 14C measurements in multiple trees are a useful method to validate the identification of annual tree rings
Educational innovation applied in the UNESCO chair of mining and industrial heritage
The “Innovatio Educativa Tertio Millennio” group has been 10 years developing educational innovation techniques, actually has reached the level of teaching on the technical teachers has developed, and share them with other groups, that can implement them in their teaching activities.
UNESCO Chair of Mining and Industrial Heritage has been years working on heritage, and on the one hand teaching in conservation and maintenance of heritage, and on the other doing raise awareness of the meaning of heritage, the social value and as must be managed effectively. Recently these two groups work together, thus is spreading in a much more effective manner the concepts of heritage, its meaning, its value, and how to manage it and provide effective protection. On one hand being a work of dissemination based on internet and on radio broadcasting, and on the other one of teaching based on educational innovation, and courses, conferences, and face-to-face seminars or distance platforms
Evaluation of five different rapid immunochromatographic tests for canine leishmaniosis in Spain
Canine leishmaniosis is a vector-borne disease caused by Leishmania parasites. Serological methods are the most common tests used for the diagnosis. This study aimed to evaluate and compare different serological commercial immunochromatographic rapid tests available in Spain to detect anti-Leishmania canine antibodies. The immunochromatographic tests were evaluated in different groups of dogs (healthy seronegative dogs (n = 21), naturally-sick dogs with moderate anti-Leishmania antibodies (n = 39), naturally-sick dogs with high anti-Leishmania antibodies (n = 37), dogs with the serological result of other pathogens infection (n = 20) and exposed dogs (n = 33)) admitted to the Veterinary Teaching Hospital of the University of Zaragoza (Spain) according to the clinical information sent with the sample to the laboratory for diagnostic purposes. The serology status was also routinely recorded through an in-house enzyme-linked immunosorbent assay (ELISA) and an in-house indirect immunofluorescence test (IFAT). The qualitative commercial serological immunochromatographic tests used were: FASTest LEISH, Uranotest Leishmania, Uranotest Leishmania 2.0, Speed Leish K, Witness Leishmania, and DFV Test Leishmania. Performance measures analyzed for each test were: sensitivity, specificity, and area under the receiver-operating (ROC) curve. The maximum specificity (1.00) was attained for Uranotest Leishmania and DFT Test Leishmania, followed by FASTest LEISH (0.98), Uranotest Leishmania 2.0 (0.98), Speed Leish K (0.98), and Witness Leishmania (0.95). The maximum sensitivity was attained for FASTest LEISH (1.00), followed by Uranotest 2.0 (0.97), Speed Leish K (0.97), Uranotest (0.96), and the lowest results with Witness (0.84) and DFV Test (0.59). Regarding the ROC curve, the maximum value was attained with the FASTest LEISH (0.99), followed by Uranotest (0.98), Uranotest 2.0 (0.97), Speed Leish K (0.97), Witness (0.90), and the lowest result with DFV Test (0.79). Efforts in the field of diagnosis should focus on establishing a commercial immunochromatographic test with high sensitivity and specificity with a reasonable cost-benefit balance
La imagen y la narrativa como herramientas para el abordaje psicosocial en escenarios de violencia.
En Colombia, la violencia ha dejado una profunda huella a raíz del conflicto armado que ha afectado a diversas regiones del país y ha dejado muchas víctimas mortales y sobrevivientes. Este trabajo analiza el contexto narrativo y la perspectiva subjetiva al dolor causado por hechos violentos, a través del caso de Amparo y la masacre del Salado. Se destaca la importancia de evaluar y reflexionar sobre los eventos traumáticos, acciones psicosociales, emergentes psicosociales, resiliencia y estrategias de afrontamiento. En el primer apartado se realiza un análisis basado en el discurso narrativo de las experiencias de violencia en la historia de Amparo, desaparición forzada de su esposo y su continúa lucha en contra del silencio y la impunidad, enfrentando el exilio y la fractura familiar de vivir separada de sus hijas. A partir de este caso, se realiza el planteamiento de preguntas circulares, reflexivas y estratégicas desde un abordaje psicosocial. En el siguiente apartado se aborda el caso de la Masacre del Salado, destacando la resiliencia y determinación para reconstruir a pesar de las tragedias, lograr como comunidad, superar los desafíos con cohesión social. A continuación, se proponen tres estrategias éticas y proactivas de acompañamiento psicosocial con el propósito de mejorar la calidad de vida y fortalecer los recursos de afrontamiento de la población del Salado. Por último, se aborda la experiencia de la foto voz como herramienta de diagnóstico para identificar dinámicas de violencia en diferentes regiones del país y el contraste de la transformación como elementos simbólicos.In Colombia, violence has left a deep mark as a result of the armed conflict that has affected various regions of the country and has left many fatalities and survivors. This paper analyzes the narrative context and the subjective perspective to the pain caused by violent events, through the Amparo case and the Salado massacre. It highlights the importance of evaluating and reflecting on traumatic events, psychosocial actions, psychosocial emergents, resilience and coping strategies. In the first section, an analysis is made based on the narrative discourse of the experiences of violence in Amparo's story, the forced disappearance of her husband and her continuous struggle against silence and impunity, facing exile and the family fracture of living separated from her daughters. Based on this case, circular, reflexive and strategic questions are posed from a psychosocial approach. The following section deals with the case of the Salado Massacre, highlighting the resilience and determination to rebuild in spite of the tragedies, to achieve as a community, to overcome the challenges with social cohesion. Next, three ethical and proactive strategies of psychosocial accompaniment are proposed with the purpose of improving the quality of life and strengthening the coping resources of the population of El Salado. Finally, the experience of photovoice as a diagnostic tool to identify dynamics of violence in different regions of the country and the contrast of transformation as symbolic elements are addressed
Disruption of Mouse Cenpj, a Regulator of Centriole Biogenesis, Phenocopies Seckel Syndrome
Disruption of the centromere protein J gene, CENPJ (CPAP, MCPH6, SCKL4), which is a highly conserved and ubiquitiously expressed centrosomal protein, has been associated with primary microcephaly and the microcephalic primordial dwarfism disorder Seckel syndrome. The mechanism by which disruption of CENPJ causes the proportionate, primordial growth failure that is characteristic of Seckel syndrome is unknown. By generating a hypomorphic allele of Cenpj, we have developed a mouse (Cenpjtm/tm) that recapitulates many of the clinical features of Seckel syndrome, including intrauterine dwarfism, microcephaly with memory impairment, ossification defects, and ocular and skeletal abnormalities, thus providing clear confirmation that specific mutations of CENPJ can cause Seckel syndrome. Immunohistochemistry revealed increased levels of DNA damage and apoptosis throughout Cenpjtm/tm embryos and adult mice showed an elevated frequency of micronucleus induction, suggesting that Cenpj-deficiency results in genomic instability. Notably, however, genomic instability was not the result of defective ATR-dependent DNA damage signaling, as is the case for the majority of genes associated with Seckel syndrome. Instead, Cenpjtm/tm embryonic fibroblasts exhibited irregular centriole and centrosome numbers and mono- and multipolar spindles, and many were near-tetraploid with numerical and structural chromosomal abnormalities when compared to passage-matched wild-type cells. Increased cell death due to mitotic failure during embryonic development is likely to contribute to the proportionate dwarfism that is associated with CENPJ-Seckel syndrome
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