Analyzing First-Person Stories Based on Socializing, Eating and Sedentary Patterns

First-person stories can be analyzed by means of egocentric pictures acquired throughout the whole active day with wearable cameras. This manuscript presents an egocentric dataset with more than 45,000 pictures from four people in different environments such as working or studying. All the images were manually labeled to identify three patterns of interest regarding people's lifestyle: socializing, eating and sedentary. Additionally, two different approaches are proposed to classify egocentric images into one of the 12 target categories defined to characterize these three patterns. The approaches are based on machine learning and deep learning techniques, including traditional classifiers and state-of-art convolutional neural networks. The experimental results obtained when applying these methods to the egocentric dataset demonstrated their adequacy for the problem at hand.Comment: Accepted at First International Workshop on Social Signal Processing and Beyond, 19th International Conference on Image Analysis and Processing (ICIAP), September 201

A silence black hole: Hawking radiation at the Hagedorn temperature

We compute semi-classically the Hawking emission for different types of black hole in type II string theory. In particular we analyze the thermal transition between NS5 branes and Little String Theory, finding compelling evidence for information recovering. We find that once the near horizon limit is taken the emission of a full family of models is exactly thermal even if back-reaction is taken into account. Consequently these theories are non-unitary and can not convey any information about the black hole internal states. It is argue that this behaviour matches the string theory expectations. We suggest a plausible reason for the vanishing of the jet-quenching parameter in such theories.Comment: 18 pages, harvma

Analysis of the Radon-222 Concentration and Physical-chemical Quality, in Drinking Water of Taxco, Guerrero

In this work the determination of radon gas (222Rn) and the characterization of chemical elements in drinking water of the city Taxco was carried out. Ingesting or inhaling a small number of radionuclides, as well as water of poor chemical quality, can become a potential public health problem. We are collecting 8 samples of water from a spring, physicochemical parameters were measured in field on different days of the dry season. Measurements of 222Rn were performed in the laboratory with an AlphaGUARD equipment. The chemical quality was analyzed in laboratory too by means of mayor and minor ions, by volumetry and colorimetry. The sodium was determined by Flama Atomic Absorption Spectroscopy (FAAS). Trace elements were analyzed by were determined by Atomic Emission Spectroscopy with Plasma Coupled by Induction (ICP-AES). The concentrations of 222Rn present an average of 22.06 ± 2.52 BqL-1. The results obtained from the main ions and field parameters show a type of diluted sodium-calcium-bicarbonate water. The trace elements present are very small and not exceed the limit of quantification. Radon gas is produced by the igneous rock that is the top of the stratigraphic column, of the hydric recharge. Rainwater when descending through the fractures is impregnated with 222Rn gas and accumulated in the underlying rock that has sufficient porosity to accumulate water and gas in the Chacualco´s spring

Dietary Glycemic Index, Dietary Glycemic Load, Blood Lipids, and Coronary Heart Disease

Objective. To examine the associations of dietary glycemic index (GI) and dietary glycemic load (GL) with blood lipid concentrations and coronary heart disease (CHD) in nondiabetic participants in the Health Worker Cohort Study (HWCS). Materials and Methods. A cross-sectional analysis was performed, using data from adults who participated in the HWCS baseline assessment. We collected information on participants' socio-demographic conditions, dietary patterns and physical activity via self-administered questionnaires. Dietary GI and dietary GL were measured using a validated food frequency questionnaire. Anthropometric and clinical measurements were assessed with standardized procedures. CHD risk was estimated according to the sex-specific Framingham prediction algorithms. Results. IIn the 5,830 individuals aged 20 to 70 who were evaluated, dietary GI and GL were significantly associated with HDL-C, LDL-C, LDL-C/HDL-C ratio, and triglycerides serum levels. Subjects with high dietary GI have a relative risk of 1.56 (CI 95%; 1.13–2.14), and those with high dietary GL have a relative risk of 2.64 (CI 95%; 1.15–6.58) of having an elevated CHD risk than those who had low dietary GI and GL. Conclusions. Our results suggest that high dietary GI and dietary GL could have an unfavorable effect on serum lipid levels, which are in turn associated with a higher CHD risk

Drag force in a string model dual to large-N QCD

We compute the drag force exerted on a quark and a di-quark systems in a background dual to large-N QCD at finite temperature. We find that appears a drag force in the former setup with flow of energy proportional to the mass of the quark while in the latter there is no dragging as in other studies. We also review the screening length.Comment: 15 pages, typos removed, error corrected, refs adde

The XMM-Newton serendipitous ultraviolet source survey catalogue

The XMM-Newton Serendipitous Ultraviolet Source Survey (XMM-SUSS) is a catalogue of ultraviolet (UV) sources detected serendipitously by the Optical Monitor (XMM-OM) on-board the XMM-Newton observatory. The catalogue contains ultraviolet-detected sources collected from 2,417 XMM-OM observations in 1-6 broad band UV and optical filters, made between 24 February 2000 and 29 March 2007. The primary contents of the catalogue are source positions, magnitudes and fluxes in 1 to 6 passbands, and these are accompanied by profile diagnostics and variability statistics. The XMM-SUSS is populated by 753,578 UV source detections above a 3 sigma signal-to-noise threshold limit which relate to 624,049 unique objects. Taking account of substantial overlaps between observations, the net sky area covered is 29-54 square degrees, depending on UV filter. The magnitude distributions peak at 20.2, 20.9 and 21.2 in UVW2, UVM2 and UVW1 respectively. More than 10 per cent of sources have been visited more than once using the same filter during XMM-Newton operation, and > 20 per cent of sources are observed more than once per filter during an individual visit. Consequently, the scope for science based on temporal source variability on timescales of hours to years is broad. By comparison with other astrophysical catalogues we test the accuracy of the source measurements and define the nature of the serendipitous UV XMM-OM source sample. The distributions of source colours in the UV and optical filters are shown together with the expected loci of stars and galaxies, and indicate that sources which are detected in multiple UV bands are predominantly star-forming galaxies and stars of type G or earlier.Comment: Accepted for publication in MNRA

Flavour Mixing, Gauge Invariance and Wave-function Renormalisation

We clarify some aspects of the LSZ formalism and wave function renormalisation for unstable particles in the presence of electroweak interactions when mixing and CP violation are considered. We also analyse the renormalisation of the CKM mixing matrix which is closely related to wave function renormalisation. We critically review earlier attempts to define a set of "on-shell" wave function renormalisation constants. With the aid of an extensive use of the Nielsen identities complemented by explicit calculations we corroborate that the counter term for the CKM mixing matrix must be explicitly gauge independent and demonstrate that the commonly used prescription for the wave function renormalisation constants leads to gauge parameter dependent amplitudes, even if the CKM counter term is gauge invariant as required. We show that a proper LSZ-compliant prescription leads to gauge independent amplitudes. The resulting wave function renormalisation constants necessarily possess absorptive parts, but we verify that they comply with the expected requirements concerning CP and CPT. The results obtained using this prescription are different (even at the level of the modulus squared of the amplitude) from the ones neglecting the absorptive parts in the case of top decay. The difference is numerically relevant.Comment: 19 pages, plain latex, one ps figur

Development of an economic model for the optimal management of water meters installed in banks inside buildings in water supply network

[ES] Reducir las pérdidas aparentes debidas a las inexactitudes de los contadores de agua, conocer la vida útil de los contadores o mejorar la eficiencia del parque de contadores de agua son algunos de los objetivos de las compañías de abastecimiento de agua. En este artículo se presenta el desarrollo de un modelo económico que le permite a las empresas conocer cuál es el tiempo óptimo de renovación de los contadores de agua instalados en batería y gestionar la sustitución de los mismos, con el objetivo de mejorar la eficiencia del parque de contadores de agua y mejorar el beneficio neto que obtienen las empresas por los volúmenes de agua registrada. El modelo económico estudia el estado de las baterías de contadores, localizando aquellas que se encuentran en peor estado metrológico y que, por lo tanto, deben sustituirse con mayor prioridad, y busca la ruta óptima que deben seguir los operarios para reducir los costes de desplazamiento de las labores de sustitución.[EN] One of the key objectives of water distribution companies is to reduce apparent losses caused by water meters inaccuracies, to know the useful life of water meters and to improve the overall efficiency of the meters installed in the system. This article details the development of an improved economic model that allows for a more accurate calculation of the useful life of water meters installed inside buildings, in meter banks. The new methodology improves water meter management, reduces costs and increases the water utility revenue by making the replacement activities of those meters more efficient. The new economic model searches for residential buildings in which the meters are installed in meter banks and have the worse metrological conditions. The economic model makes a selection of the meters in those buildings that need to be replaced and the ones that can be left in the bank. Then, the new economic model searches for the buildings nearby that need to be visited to optimize the tHernández-García, A.; Bazán, L.; Valera-Talavera, O.; Arregui-De La Cruz, F. (2020). Desarrollo de un modelo económico para la gestión de contadores de agua instalados en batería en redes de abastecimiento. Ingeniería del agua. 24(1):1-13. https://doi.org/10.4995/ia.2020.12164OJS113241Allender, H. 1996. Determining the economical optimum life of residential water meters. Journal of Water Engineering and Management, 143(9), 20-24.Arregui-de la Cruz, F., Cabrera-Rochera, E., Cobacho-Jordán, R. 2007. Gestión integral de contadores de agua. Valencia: Gil Industrias Gráficas, SL.Arregui, F., Cobacho, R., Cabrera, E., Espert, V. 2011. Graphical Method to Calculate the Optimum Replacement Period for Water Meters. Journal of Water Resources Planning and Management, 137(1), 143-146. https://doi.org/10.1061/(ASCE)WR.1943-5452.0000100Gavara-Tortes, F., Arregui-de la Cruz, F. 2018. Análisis metrológico de contadores de agua en abastecimientos. TecnoAqua, (30), 72-80. http://hdl.handle.net/10251/120333Instituto Nacional de Estadística, 2018. Estadística sobre el suministro y saneamiento del agua en el año 2016, s.l.: Notas de prensa. Disponible en: https://www.ine.es/prensa/essa_2016.pdfMale, J., Noss, R., Moore, I. 1985. Identifying and reducing losses in water distribution systems. Noyes Publications.Planells, F., Antolí, A., López, V., Sanz, F., García-Serra, J. 1987. Diagnóstico de la gestión óptima de contadores en un sistema de distribución de agua. Tecnología del agua, 38, 42-55.Szilveszter, S., Beltran, R., Arturo, F. 2015. Performance analysis of the domestic water meter park in water supply network of Ibarra, Ecuador. Urban Water Journal, 21 Mayo.pp. 85-96. https://doi.org/10.1080/1573062X.2015.1057181Taborda, C., Anunciaçao, A. 1997. Os contadores e a qualidade da medição. Agua Scripta.Vindas Villalobos, J.C. 2005. Modelo para la cuantificación y desagregación de las pérdidas en sistemas de agua potable como herramienta para el establecimiento de un programa eficiente de reducción de pérdidas. Revista Evolución, 3(1), 29-45.Yee, M. 1999. Economic analysis for replacing residential meters. Journal of AWWA, 91(7), 72-77. https://doi.org/10.1002/j.1551-8833.1999.tb08666.

DNA methylation in genes of longevity‐regulating pathways: association with obesity and metabolic complications

Aging is the main risk factor for most chronic diseases. Epigenetic mechanisms, such as DNA methylation (DNAm) plays a pivotal role in the regulation of physiological responses that can vary along lifespan. The aim of this research was to analyze the association between leukocyte DNAm in genes involved in longevity and the occurrence of obesity and related metabolic alterations in an adult population. Subjects from the MENA cohort (n=474) were categorized according to age () and the presence of metabolic alterations: increased waist circumference, hypercholesterolemia, insulin resistance, and metabolic syndrome. The methylation levels of 58 CpG sites located at genes involved in longevity‐regulating pathways were strongly correlated (FDR‐ adjusted< 0.0001) with BMI. Fifteen of them were differentially methylated (p<0.05) between younger and older subjects that exhibited at least one metabolic alteration. Six of these CpG sites, located at MTOR (cg08862778), ULK1 (cg07199894), ADCY6 (cg11658986), IGF1R (cg01284192), CREB5 (cg11301281), and RELA (cg08128650), were common to the metabolic traits, and CREB5, RELA, and ULK1 were statistically associated with age. In summary, leukocyte DNAm levels of several CpG sites located at genes involved in longevity‐ regulating pathways were associated with obesity and metabolic syndrome traits, suggesting a role of DNAm in aging‐related metabolic alterations