A community electrification project: combination of microgrids and household systems fed by wind, PV or micro-hydro energies according to micro-scale resource evaluation and social constraints

When electrifying isolated rural communities, usually standardized solutions have been implemented using the same technology at all the points. However these solutions are not always appropriate to the community and its population. This article aims to describe the technical design of the electrification system of the community of Alto Peru (in the region of Cajamarca, Peru), where the adequate technology was used at each area according to micro-scale resource evaluation and the socioeconomic requirements of the population. Specifically four technologies were implemented: wind microgrids in highlands, a micro-hydro power plant in the presence of a waterfall, a PV microgrid in a group of points sheltered from the wind and individual PV systems in scattered points with low wind potential. This project brought electricity to 58 households, a health center, a school, a church, two restaurants and two shops.Peer ReviewedPostprint (author’s final draft

Sobre els carrers de Castelló de 1928. Nomenclatura Oficial vs Nomenclatura Popular

Terceres Jornades de Foment de la Investigació de la FCHS (Any 1997-1998

IDENTIFICACIÓN DE LOS CRITERIOS DE POSICIONAMIENTO WEB APLICADOS A LAS WEBS UNIVERSITARIAS PÚBLICAS VALENCIANAS

Se realiza un estudio sobre el estado del arte del posicionamiento web en la actualidad, para a continuación investigar la aplicación de dichos criterios por las universidades públicas valencianas, compararlos con su visibilidad y entre las diferentes universidades, para establecer en qué fallan y qué propuestas de mejora serían las más adecuadas.Pastor López, P. (2010). IDENTIFICACIÓN DE LOS CRITERIOS DE POSICIONAMIENTO WEB APLICADOS A LAS WEBS UNIVERSITARIAS PÚBLICAS VALENCIANAS. http://hdl.handle.net/10251/14209Archivo delegad

Improving perception accuracy in bar charts with internal contrast and framing enhancements

Bar charts are among the most commonly used visualization graphs. Their main goal is to communicate quantities that can be visually compared. Since they are easy to produce and interpret, they are found in any situation where quantitative data needs to be conveyed (websites, newspapers, etc.). However, depending on the layout, the perceived values can vary substantially. For instance, previous research has shown that the positioning of bars (e.g. stacked vs separate) may influence the accuracy in bar ratio length estimation. Other works have studied the effects of embellishments on the perception of encoded quantities. However, to the best of the authors’ knowledge, the effect of perceptual elements used to reinforce the quantity depicted within the bars, such as contrast and inner lines, has not been studied in depth. In this research we present a study that analyzes the effect of several internal contrast and framing enhancements with respect to the use of basic solid bars. Our results show that the addition of minimal visual elements that are easy to implement with current technology can help users to better recognize the amounts depicted by the bar charts.Peer ReviewedPostprint (author's final draft

MAPT H1 haplotype is associated with late-onset Alzheimer's disease risk in APOE ε 4 noncarriers: Results from the dementia genetics Spanish consortium

The MAPT H1 haplotype has been linked to several disorders, but its relationship with Alzheimer's disease (AD) remains controversial. A rare variant in MAPT (p.A152T) has been linked with frontotemporal dementia (FTD) and AD. We genotyped H1/H2 and p.A152T MAPT in 11,572 subjects from Spain (4,327 AD, 563 FTD, 648 Parkinson's disease (PD), 84 progressive supranuclear palsy (PSP), and 5,950 healthy controls). Additionally, we included 101 individuals from 21 families with genetic FTD. MAPT p.A152T was borderline significantly associated with FTD [odds ratio (OR)=2.03; p=0.063], but not with AD. MAPT H1 haplotype was associated with AD risk (OR=1.12; p=0.0005). Stratification analysis showed that this association was mainly driven by APOE ε4 noncarriers (OR=1.14; p=0.0025). MAPT H1 was also associated with risk for PD (OR=1.30; p=0.0003) and PSP (OR=3.18; p=8.59 × 10-8) but not FTD. Our results suggest that the MAPT H1 haplotype increases the risk of PD, PSP, and non-APOE ε4 AD.Spanish Ministry of Science and Innovation SAF 2006-10126 (2006–2009) and SAF2010-22329-C02-01 (2011–2013) to P.P and by the UTE project FIMA to P.P. Grants from the Ministry of Science (SAF2010-15558) and CIBERNED. Agust´ın Ruiz is supported by grant PI13/02434 (Acción Estratégica en Salud. Instituto de Salud Carlos III. Ministerio de Economía y Competitividad, Spain). Grant: Consolider (CSD2010-00045).Peer Reviewe

Amplitude death and restoration in networks of oscillators with random-walk diffusion

Systems composed of reactive particles diffusing in a network display emergent dynamics. While Fick's diffusion can lead to Turing patterns, other diffusion schemes might display more complex phenomena. Here we study the death and restoration of collective oscillations in networks of oscillators coupled by random-walk diffusion, which modifies both the original unstable fixed point and the stable limit-cycle, making them topology-dependent. By means of numerical simulations we show that, in some cases, the diffusion-induced heterogeneity stabilizes the initially unstable fixed point via a Hopf bifurcation. Further increasing the coupling strength can moreover restore the oscillations. A numerical stability analysis indicates that this phenomenology corresponds to a case of amplitude death, where the inhomogeneous stabilized solution arises from the interplay of random walk diffusion and heterogeneous topology. Our results are relevant in the fields of epidemic spreading or ecological dispersion, where random walk diffusion is more prevalent

What causes a heavy precipitation period to become extreme? The exceptional October of 2018 in the Western Mediterranean

The Mediterranean region is particularly exposed to heavy precipitation and flash flooding. Every autumn the region is affected by these weather-related hazards, frequently with immense costly and deadly consequences. What makes an already potentially damaging period in terms of heavy precipitation, even more intense? This is the underlying question in this study, in which the atmosphere and the ocean conditions in October 2018 are examined to identify anomalies favoring this intensification. Furthermore, the model representativity of the over-averaged precipitation period and underlying anomalies is analyzed across scales using climatological, seasonal, and event-based COSMO high-resolution model simulations. Our investigation shows that October-2018, in the context of the climatological series from 1982 to 2018, could be marked as an unprecedented period because of the presence of intense and numerous low-pressure systems. Additionally, atmospheric moisture values placed this time above the climatological average, mainly for the high percentiles of the TCWV hourly anomalies. Specific humidity showed similar behaviour as TCWV except for pressure levels lower than 700 hPa, probably in relation to the evolution of the former Hurricane Leslie. The atmosphere-ocean interaction presented combined strong sea surface temperature (SST) and evaporation anomalies. April to October SST clearly exceeds climatological values while October-2018 presents both strong monthly anomaly and intense evaporation peaks preceding the most intense precipitation events. These large-scale features’ anomalies were in general well captured by the high-resolution regional climate model simulations at climatic and seasonal scales leading to an accurate representation of accumulated precipitation for the October period. However, the numerical weather prediction simulations on an event scale revealed low predictability, in agreement with former investigations, due to differences at the location and intensity of the cut-off lows and particularly at the atmospheric moisture field. The conclusions of this study show that it is not the most extreme period in terms of single anomalies which lead to extreme wet seasons, but the synergy of atmospheric and oceanic anomaly conditions with a constant interplay which made Autumn/October 2018 an extreme season/month

Validity and sensitivity of instrumented postural and gait assessment using low-cost devices in Parkinson's disease

[EN] Background Accurate assessment of balance and gait is necessary to monitor the clinical progress of Parkinson's disease (PD). Conventional clinical scales can be biased and have limited accuracy. Novel interactive devices are potentially useful to detect subtle posture or gait-related impairments. Methods Posturographic and single and dual-task gait assessments were performed to 54 individuals with PD and 43 healthy controls with the Wii Balance Board and the Kinect v2 and the, respectively. Individuals with PD were also assessed with the Tinetti Performance Oriented Mobility Assessment, the Functional Gait Assessment and the 10-m Walking Test. The influence of demographic and clinical variables on the performance in the instrumented posturographic and gait tests, the sensitivity of these tests to the clinical condition and phenotypes, and their convergent validity with clinical scales were investigated. Results Individuals with PD in H&Y I and I.5 stages showed similar performance to controls. The greatest differences in posture and gait were found between subjects in H&Y II.5 and H&Y I-I.5 stage, as well as controls. Dual-tasking enhanced the differences among all groups in gait parameters. Akinetic/rigid phenotype showed worse postural control and gait than other phenotypes. High significant correlations were found between the limits of stability and most of gait parameters with the clinical scales. Conclusions Low-cost devices showed potential to objectively quantify posture and gait in established PD (H&Y >= II). Dual-tasking gait evaluation was more sensitive to detect differences among PD stages and compared to controls than free gait. Gait and posture were more impaired in akinetic/rigid PD.This study has been funded by project VALORA, Grant 201701-10 of the Fundacio la Marato de la TV3 (Barcelona, Spain) and the European Union through the Operational Program of the European Regional Development Fund (ERDF) of the Valencian Community 2014-2020 (IDIFEDER/2018/029) to RL, and Alter Laboratories SA to PP.Álvarez, I.; Latorre, J.; Aguilar, M.; Pastor, P.; Llorens Rodríguez, R. (2020). Validity and sensitivity of instrumented postural and gait assessment using low-cost devices in Parkinson's disease. Journal of NeuroEngineering and Rehabilitation. 17(1):1-10. https://doi.org/10.1186/s12984-020-00770-7S110171Nussbaum RL, Ellis CE. Alzheimer’s Disease and Parkinson’s Disease. N Engl J Med. 2003;13:56–64.Hass CJ, Malczak P, Nocera J, Stegemöller EL, Shukala A, Malaty I, et al. Quantitative normative Gait data in a large cohort of ambulatory persons with parkinson’s disease. 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Utilidad de las secuencias potenciadas en susceptibilidad paramagnética (SWI) para diferenciar crisis somestésicas de accidentes isquémicos transitorios en un paciente con angiopatía amiloide cerebral

Background. Cerebral amyloid angiopathy (CAA) is characterized by the deposit of β-amyloid on the walls of small and medium-sized arteries of the cerebral cortex and leptomeninges causing cerebral bleeding. Clinical presentations may include transient neurological events for which differential diagnosis can be difficult. Case report. We report a subject with a medical history of recent stroke who presented somesthetic seizures mimicking transient ischemic attacks owing to CAA microbleeding. Antiplatelet treatment was reduced and after lamotrigine was commenced the episodes disappeared. Susceptibility-weighted magnetic resonance imaging was very helpful for diagnosis (SWI-MRI). Conclusions. CAA microbleeding can be manifested in the form of seizures mimicking focal transient sensitive neurological deficits that can be erroneously attributed to cerebral ischemia. The present case report suggests that, despite the presence of a past medical history of strokes, neurologists should consider CAA microbleeding as a possible cause of pseudo-transient ischemic attacks. High-resolution neuroimaging including SWIMRI imaging can be helpful in identifying cortical microbleedings. In this way, the start or increase of antiplatelet treatment can be avoided, and the risk of potentially fatal complications minimize

Predicción del valor de actividad de agua de una disolución de electrolitos

La actividad de agua de una disolución de electrolitos, como por ejemplo una salmuera, es un factor fundamental a tener en cuenta si se desea mantener la estabilidad y calidad de un alimento durante un periodo de tiempo prolongado. La actividad de agua será considerada segura para un alimento si se proporcionan los datos adecuados que demuestren que el alimento a esa actividad de agua o por debajo de ella no permite el crecimiento de microorganismos.Pastor Navarro, C.; Talens Oliag, P. (2017). Predicción del valor de actividad de agua de una disolución de electrolitos. http://hdl.handle.net/10251/83394DE