1,854 research outputs found

    Analysis of a 10-year Nearshore Wave Database and its Implications to Littoral Processes

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    The variability of the nearshore wave climate is investigated via the analysis of over 10 years of Acoustic Doppler Current Profiler (ADCP) data from a gauge deployed at Melbourne Beach, FL. Examples of large yearly variability in the significant wave height, peak period, mean direction and energy distribution are found in the data. Estimates of the averaged spectra for the entire record show that the average wave energy is distributed almost symmetrically with the peak being close to shore-normal. It was expected that the peak would be shifted towards the north of shore-normal considering net north to south longshore sediment transport at this location. Further analysis of the directional spectra partitioned into three directional windows reveals that waves from the southeast (avg. Hmo = 0.78 m) are less energetic than those from the northeast (avg. Hmo = 0.87 m), but they arrive from the south 53% more often. Additionally, energy-based significant wave height (Hmo), peak period (Tp) and mean period (Tmean) distributions are studied and modeled with notable success. Radiation stress (Sxy) estimates are computed using both rigorous integration as well as parameter-based approximations. These two estimates are correlated but the parameter-based approximation over predicts Sxy by 42%, because this method assigns all the wave energy into one direction (Ruessink et al., 2001). Finally, it is shown by the Sxy total average that the net longshore forcing at this location is indeed north to south, but yearly and seasonal variability were quite high. The results indicate that short-term wave records may not provide accurate information for planning purposes. For example, if only 3 months of data were collected at this site, there would be a 33% chance that the mean longshore forcing would be erroneously directed from south to north

    Neotectonic activity and paleoseismological analysis in Eastern of Antioquia, in the vicinity of Medellin city - Colombia.

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    The aim of this investigation was the paleoseismological characterization of eastern Antioquia, using trenches analysis and detailed study of indicators of neotectonic activity, some of which had been reported in previous seismic hazard assessment studies of the Aburra Valley. Through techniques of neotectonic, paleoseismology and also age correlation of Quaternary deposits obtained by several authors, it was found at Alcaravanes site (Marinilla Town), evidences of three seismic events with magnitudes Mw 6.4, 6.6 and 6.5 which displaced recent deposits with maximum ages of 440,000, 37,000 and 8,000 years respectively. Likewise, two prehistoric earthquakes, both with magnitude Mw 6.5 were recognized at the Hamburgo site (Guarne Town), dated between 880,000 and 37,000 years respectively, which proves the existence and activity of La Mosca fault. Finally, the Manantiales site (Rionegro Town) revealed a couple of seismic events with magnitude Mw 6.7 and 6.6 that displaced alluvial terraces in Rio Negro basin with a maximum age of onset of neotectonic deformation of 880,000 years. Latest neotectonic findings change the perspective of seismic hazard in Medellin city and surroundings. Prehistoric earthquakes have occurred in the last million years and created small surface rupture and faulting not related with active mountain fronts. Furthermore, the evidence shows obliterated active faults and efficiency of erosion factors in modeling relief and alluvial fill in the basins of Rionegro Erosion Surface.La presente investigación tuvo como objetivo principal la caracterización paleosismológica de varios sitios en el Oriente Antioqueño, apartir del levantamiento de trincheras y análisis detallado de indicios de actividad neotectónica, algunos de los cuales habían sido reportados en los estudios previos de la microzonificación sísmica del Valle de Aburrá. Mediante técnicas de neotectónica, paleosismología y correlación de dataciones en depósitos Cuaternarios obtenidas por diferentes autores en la región, se encontraron en el sitio Alcaravanes (Municipio de Marinilla), evidencias de tres eventos sísmicos con magnitudes Mw 6,4,6,6 y 6,2 que afectaron depósitos recientes con edades máximas de 440.000, 37.000 y 8.000 años respectivamente, para una estimación muy preliminar de un periodo de retorno variable entre 313.000 y 29.000 años. Igualmente, en el punto Hamburgo (Municipio de Guarne) se interpretan dos eventos sísmicos, ambos con magnitud Mw 6,5 con edades de 880.00 y 37.000 años respectivamente, los cuales validan la existencia y actividad de la Falla La Mosca. Por último, en el sitio Manantiales (Municipio de Rionegro), se interpretó la ocurrencia de dos eventos sísmicos con magnitudes Mw 6,7 y 6,6 que afectaron únicamente las terrazas aluviales medias del rio Negro, mostrando que las deformaciones neotectónicas en la región tienen una edad máxima de 880.000 años. Las evidencias neotectónicas halladas cambian la perspectiva de la amenaza sísmica para la ciudad de Medellín y sus alrededores, mostrando la ocurrencia de sismos desde hace menos de un millón de años, con evidencias de ruptura superficial poco preservadas y fallamientos no relacionados con frentes de montaña activos. Se concluye además, la existencia de fallas obliteradas con actividad tectónica reciente

    Temas Socio-Jurídicos. Volumen 22 No. 46 Julio de 2004

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    Presentamos a la comunidad académica la edición número 46 de la revista Temas Socio-Jurídicos de la Facultad de Derecho de la Universidad Autónoma de Bucaramanga, que se inserta como muestra del análisis académico en el marco de las preocupantes modificaciones estructurales que dentro del desarrollo jurídico de país, adelanta el Estado Colombiano.We present to the academic community the 46th edition of the Temas Socio-Jurídicos magazine of the Faculty of Law of the Autonomous University of Bucaramanga, which is inserted as a sample of academic analysis within the framework of the worrying structural modifications that within the legal development of country, advances the Colombian State

    Temas Socio-Jurídicos. Volumen 6 No. 19 Marzo 1988

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    De gran importancia para el desarrollo en la práctica, de los objetivos de modernización de la administración de justicia en nuestro departamento, el convenio suscrito por el instituto ser de Investigación Cámara de Comercio de Bucaramanga Universidad Autónoma de Bucaramanga, en el curso del evento, permitirá dotar al Tribunal Superior de Distrito Judicial de Bucaramanga, de los elementos tecnológicos de la computación y los programas informáticos, que le permitan impartir justicia, rápida, oportuna y eficaz. Presentamos los documentos que recogen la convergencia de voluntades de las entidades comprometidas, así como la intervención del Ministro de Justicia, testigo del acuerdo.Of great importance for the practical development of the objectives of modernizing the administration of justice in our department, the agreement signed by the Bucaramanga Chamber of Commerce Research Institute-Bucaramanga Autonomous University, during the event, It will allow equipping the Superior Court of the Judicial District of Bucaramanga with the technological elements of computing and computer programs that allow it to impart justice quickly, timely and efficiently. We present the documents that collect the convergence of wills of the entities involved, as well as the intervention of the Minister of Justice, witness of the agreement

    Espacio y territorios: razón, pasión e imaginarios

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    En este caleidoscopio de acercamientos hacia lo espacial y territorial, las visiones se mueven desde aquellas románticas y existencialistas, pasando por aquellas objetivistas y positivistas, hasta las estructuralistas y postestructuralistas. Por el espacio y el territorio se interesan con enfoques diversos numerosas disciplinas, desde la psicología, la etología o la literatura, y las ciencias naturales como la biología o la ecología, hasta las ciencias sociales y políticas, como la geografía, la antropología, la economía y la sociología. Este interés multidisciplinario demuestra la importancia y la complejidad del tema espacial y territorial, y reclama la necesidad de su estudio y comprensión interdisciplinarios, como se intenta con esta publicación

    Balance de 25 años de jurisprudencia de la Corte Constitucional

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    La Corte Constitucional de Colombia ha tenido un importante impacto en la vida social, cultural y política del país, a tal punto que, desde su creación, la jurisprudencia de este tribunal se ha convertido en un referente mundial acerca de las diversas materias sobre las que se ha pronunciado . Este libro presenta un balance de la jurisprudencia que durante sus primeros veinticinco años la Corte ha expedido. Con este fin, el magistrado Luis Guillermo Guerrero Pérez y los magistrados auxiliares Miguel Polo Rosero y Claudia Escobar García recogen los trabajos de expertos nacionales e internacionales, funcionarios del Estado y Miembros de la sociedad civil que se presentaron en el XII Encuentro de la Jurisdicción Constitucional, realizado en la ciudad de San Juan de Pasto entre el 27 y el 30 de septiembre de 2017. En ese encuentro, se ratificó que la Corte Constitucional tiene la tarea de velar por la integridad de los compromisos de la Constitución. Los capítulos que conforman este libro ofrecen una mirada multidisciplinaria sobre la eficacia y el impacto de las decisiones de la Corte, específicamente en lo que tiene que ver con la democracia y la participación, el sistema de salud, el sistema pensional, el medio ambiente y el fenómeno discriminatorio con la relación al género y a la condición de discapacidad en Colombia.Bogot

    Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2

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    The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, individuals with clonal mosaic events (clonal mosaicism for chromosome alterations and/or loss of chromosome Y) showed an increased risk of COVID-19 lethality

    Penilaian Kinerja Keuangan Koperasi di Kabupaten Pelalawan

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    This paper describe development and financial performance of cooperative in District Pelalawan among 2007 - 2008. Studies on primary and secondary cooperative in 12 sub-districts. Method in this stady use performance measuring of productivity, efficiency, growth, liquidity, and solvability of cooperative. Productivity of cooperative in Pelalawan was highly but efficiency still low. Profit and income were highly, even liquidity of cooperative very high, and solvability was good

    Juxtaposing BTE and ATE – on the role of the European insurance industry in funding civil litigation

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    One of the ways in which legal services are financed, and indeed shaped, is through private insurance arrangement. Two contrasting types of legal expenses insurance contracts (LEI) seem to dominate in Europe: before the event (BTE) and after the event (ATE) legal expenses insurance. Notwithstanding institutional differences between different legal systems, BTE and ATE insurance arrangements may be instrumental if government policy is geared towards strengthening a market-oriented system of financing access to justice for individuals and business. At the same time, emphasizing the role of a private industry as a keeper of the gates to justice raises issues of accountability and transparency, not readily reconcilable with demands of competition. Moreover, multiple actors (clients, lawyers, courts, insurers) are involved, causing behavioural dynamics which are not easily predicted or influenced. Against this background, this paper looks into BTE and ATE arrangements by analysing the particularities of BTE and ATE arrangements currently available in some European jurisdictions and by painting a picture of their respective markets and legal contexts. This allows for some reflection on the performance of BTE and ATE providers as both financiers and keepers. Two issues emerge from the analysis that are worthy of some further reflection. Firstly, there is the problematic long-term sustainability of some ATE products. Secondly, the challenges faced by policymakers that would like to nudge consumers into voluntarily taking out BTE LEI

    Search for stop and higgsino production using diphoton Higgs boson decays

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    Results are presented of a search for a "natural" supersymmetry scenario with gauge mediated symmetry breaking. It is assumed that only the supersymmetric partners of the top-quark (stop) and the Higgs boson (higgsino) are accessible. Events are examined in which there are two photons forming a Higgs boson candidate, and at least two b-quark jets. In 19.7 inverse femtobarns of proton-proton collision data at sqrt(s) = 8 TeV, recorded in the CMS experiment, no evidence of a signal is found and lower limits at the 95% confidence level are set, excluding the stop mass below 360 to 410 GeV, depending on the higgsino mass
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