SIDRA: a blind algorithm for signal detection in photometric surveys

We present the Signal Detection using Random-Forest Algorithm (SIDRA). SIDRA is a detection and classification algorithm based on the Machine Learning technique (Random Forest). The goal of this paper is to show the power of SIDRA for quick and accurate signal detection and classification. We first diagnose the power of the method with simulated light curves and try it on a subset of the Kepler space mission catalogue. We use five classes of simulated light curves (CONSTANT, TRANSIT, VARIABLE, MLENS and EB for constant light curves, transiting exoplanet, variable, microlensing events and eclipsing binaries, respectively) to analyse the power of the method. The algorithm uses four features in order to classify the light curves. The training sample contains 5000 light curves (1000 from each class) and 50000 random light curves for testing. The total SIDRA success ratio is $\geq 90\%$. Furthermore, the success ratio reaches 95 - 100$\%$ for the CONSTANT, VARIABLE, EB, and MLENS classes and 92$\%$ for the TRANSIT class with a decision probability of 60$\%$. Because the TRANSIT class is the one which fails the most, we run a simultaneous fit using SIDRA and a Box Least Square (BLS) based algorithm for searching for transiting exoplanets. As a result, our algorithm detects 7.5$\%$ more planets than a classic BLS algorithm, with better results for lower signal-to-noise light curves. SIDRA succeeds to catch 98$\%$ of the planet candidates in the Kepler sample and fails for 7$\%$ of the false alarms subset. SIDRA promises to be useful for developing a detection algorithm and/or classifier for large photometric surveys such as TESS and PLATO exoplanet future space missions.Comment: 8 pages, 9 figures, 2 Table

La naturaleza química del aroma de la sidra

La sidra es la bebida emblemática de Asturias y, también, un atractivo campo de investigación. Profundizar en el estudio de su aroma incluye dos aspectos complementarios: la determinación cuantitativa de su composición volátil y la influencia de ésta en su percepción sensorial. A lo largo del siglo XXI, el sector sidrero ha experimentado un gran desarrollo innovador y las bodegas han mejorado tanto sus instalaciones como las técnicas de elaboración. Fruto de este compromiso entre calidad e innovación ha surgido, entre otros productos, la sidra natural de nueva expresión. Se trata de una sidra natural que no necesita escanciado y en cuya elaboración se incluye una etapa de clarificación/filtración que le proporciona un aspecto transparente y brillante

Elaboración artesana de aguardiente de sidra. III. Maduración

La destilación de la sidra produce un aguardiente de gran complejidad aromática y gustativa, donde destaca un aroma intenso y persistente con matices frutales que recuerdan a la materia prima. Por esta razón, a diferencia de lo que sucede con otros destilados que necesariamente deben ser envejecidos, el consumo del aguardiente de sidra tiene lugar en buena medida en fresco, esto es, sin una estancia previa en contacto con la madera

Evidentialism, Knowledge, and Evidence Possession

Evidentialism has shown itself to be an important research program in contemporary epistemology, with evidentialists giving theories of virtually every important topic in epistemology. Nevertheless, at the heart of evidentialism is a handful of concepts, namely evidence, evidence possession, and evidential fit. If evidentialists cannot give us a plausible account of these concepts, then their research program, with all its various theories, will be in serious trouble. In this paper, I argue that evidentialists has yet to give a plausible account of evidence possession and the prospects for doing so are dim

Cultivo de maceiras e produçâo de sidra com denominaçâo de origen protegida no Principado das Asturias, Espanha

A sidra é obtida a partir da fermentação alcoólica do mosto de maçã. Na Espanha, a bebida é elaborada basicamente no norte do país, sendo o Principado das Astúrias a principal comunidade autônoma produtora. A maçã e a sidra, elementos marcantes da socioeconomia regional, sustentam o preparo do fermentado reconhecido pela qualidade da matéria-prima que emprega. Todavia, longe de um modelo de cultivo extensivo de macieiras, o meio rural asturiano está pautado na presença de pequenas propriedades policultoras familiares. Além disso, até meados da década de 1990, devido à expansão da pecuária bovina, as atividades de cultivo de maçã e produção de sidra presenciaram acentuado descenso. Diante deste panorama desfavorável, a Denominação de Origem Protegida (DOP) "Sidra das Astúrias", obtida em 2003, objetivou promover a bebida e revigorar a fruticultura da maçã. Os resultados alcançados com o selo DOP tem sido promissores considerando o retorno dos produtores ao cultivo da fruta e a expansão do mercado consumidor da sidra asturianaCider is a beverage obtained from the alcoholic fermentation of apple juice. In Spain the drink is produced above all in the north of the country, and the Principality of Asturias is the main producing region. Apples are one of the most important products of the region's agriculture and are responsible for the high quality of the cider made in Asturias. However, far from being modelled on apple-growing monoculture, the rural economy in Asturias is built around small family farms engaging in polyculture. Also, up to the mid-1990s apple cultivation and cider-making saw a significant decline due to the growth of cattle farming. To deal with this unfavourable outlook the "Asturian Cider" Protected Designations Origin (PDO, a government-conferred quality benchmark), obtained in 2003, aimed to promote the beverage and boost apple farming. The results of the PDO seal have been promising, since producers have returned to farming the fruit and the market for Asturian cider has grownLa sidra es una bebida obtenida a partir de la fermentación alcohólica del mosto de la manzana. En España la bebida es elaborada sobre todo en el norte del país, siendo el Principado de Asturias la comunidad autónoma productora más importante. La manzana y la sidra, base de la socioeconomía regional, en la reconocida calidad de la materia primera y el proceso de fermentación que se emplea. El medio rural asturiano está caracterizado por la presencia de pequeñas propiedades familiares de producción mixta, lejos de un modelo de cultivo extensivo del manzano. Además, hasta mediados de la década de 1990, debido a la expansión de la ganadería las actividades del cultivo del manzano y la producción de la sidra tuvieron descenso importante. Ante este panorama desfavorable la Denominación de Origen Protegida (DOP) "Sidra de Asturias", obtenida en el 2003, decidió promover la bebida y fortalecer la fruticultura de manzanas. Los resultados alcanzados con el sello DOP han sido prometedores al conseguir el retorno de los productores al cultivo de la fruta y la expansión del mercado consumidor de la sidra asturian

Descripción de las variedades de manzana de la D.O.P. Sidra de Asturias

69 p. : il. col. ; 24 cm.En el libro se recoge la descripción de veintidos variedades de manzano de sidra acogidas a la Denominación de Origen Protegida "Sidra de Asturias". Se describen las propiedades agronómicas y tecnológicas básicas que permiten hacer una correcta planificación de la plantación, como gestionar el cultivo, conocer el momento óptimo de la recolección y transformación del fruto y establecer, a partir de las propiedades tecnológicas de éste, la mezcla más adecuada para llevar a cabo una elaboración correcta de la sidra.Gobierno del Principado de Asturias, Consejería de medio Rural y Pesca ; INIA, Instituto Nacional de Investigación y Tecnología Agraria y Alimentari

Reasons for betel quid chewing amongst dependent and non-dependent betel quid chewing adolescents: a school-based cross-sectional survey

Background: Betel quid (BQ) chewing in children is initiated in their adolescence. It is pivotal to understand adolescents’ reasons behind chewing BQ. In this study, we aimed to evaluate the reasons for BQ chewing amongst adolescents using reasons for betel quid chewing scale (RBCS) and their associated dependency on it. Methods: This is a cross-sectional school based survey. Out of 2200 adolescents from 26 schools of Karachi, 874 BQ chewers were assessed for their reasons of BQ chewing and dependency on it. Regression analyses were employed to report crude and adjusted (after adjusting for all reasons of BQ chewing) effect sizes with 95% confidence interval and P-value was set significant at < 0.05. Results: Students who believed that BQ chewing relaxes them (stimulation construct) were twice as likely to be dependent on BQ (OR = 2.36, 95% CI (1.20–4.65) as compared with others. Participants who thought it eases their decision making (stimulation construct), were sizably more likely to be dependent on BQ (OR = 9.65, 95% CI (4.15–22.43) than those who did not consider ease in decision making important. Adolescents who considered not chewing as rude (social/cultural construct), were thrice more likely to be dependent on BQ (OR = 2.50, 95% CI (1.11–5.63) than others. Conclusions: Stimulation remained fundamental chewing reason followed by social/cultural trigger amongst adolescents. Any future intervention may get favorable results if it addresses ways to overcome stimulation and social/cultural barriers that are strongly associated with BQ chewing and dependency

Memoria SIDRA 2006

En el ámbito de la gestión documental y la gestión del conocimiento, el Gobierno del Principado de Asturias ha desarrollado un ambicioso proyecto denominado SIDRA (Sistema de Información Documental en Red de Asturias), un sistema integral de información documental en red que, con soporte en una única herramienta, aborda el tratamiento, la recuperación, la distribución y, en su caso, el préstamo de todo tipo de documentación o información, pública o restringida, necesaria para el ejercicio de las funciones de la organización, con dos únicas salvedades: los documentos depositados en las bibliotecas públicas y los expedientes administrativos depositados y custodiados en el archivo, en ambos casos soportados en soluciones específicas .In the field of document and knowledge management, the Government of the Principality of Asturias has developed an ambitious project called SIDRA (Asturias Online Document Information System), which has been conceived as an integrated system that, supported by a single tool, deals with the treatment, recovery, distribution and lending of all kind of documents or information, public or restricted, required to carry out the functions of the Government. SIDRA does not deal with documents deposited in public libraries and administrative files deposited and kept in the archive. In both cases, the documents are supported by specific applications