Verbalklammer und Trennbarkeit. Beitrag zur semantischen Begründung der Klammerfähigkeit bei den trennbaren Verbbildungen

The aim of this essay is to bring the verbal bracket, as the structural pattern of the german clause, together with the semantic characteristics of the separable verb formations. A very important part is played in this context by the content-related properties of composita and other verb formations inside and outside the frame of word formation, referring here to the semantic confrontation between determining words and primary words. These properties mean that separable verb formations are able to build a verbal bracket, whereas inseparable formations are clearly unable to do so. This essay deals with this topic and provides not only a general description of the phenomenon, but also a semantic explanation of the fact that separable verb formations can build a verbal bracket

A Narrow Optical Pulse Emitter Based on LED: NOPELED

Light sources emitting short pulses are needed in many particle physics experiments using optical sensors as they can replicate the light produced by the particles being detected and are also an important calibration and test element. This work presents NOPELED, a light source based on LEDs emitting short optical pulses with typical rise times of less than 3 ns and FullWidth at Half Maximum lower than 7 ns. The emission wavelength depends on the model of LED used. Several LED models have been characterized in the range from 405 to 532 nm, although NOPELED can work with LED emitting wavelengths outside of that region. While the wavelength is fixed for a given LED model, the intensity and the frequency of the optical pulse can be controlled. NOPELED, which also has low cost and simple operation, can be operated remotely, making it appropriate for either different physics experiments needing in-place light sources such as astrophysical neutrino detectors using photo-multipliers or positron emission tomography devices using scintillation counters, or, beyond physics, applications needing short pulses of light such as protein fluorescence or chemodetection of heavy metals.Spanish Ministerio de Ciencia, Innovacion, Investigacion y Universidades (MCIU) PGC2018-096663-B-C41 PGC2018-096663-A-C42 PGC2018-096663-B-C43 PGC2018-096663-B-C44Center for Forestry Research & Experimentation (CIEF) PROMETEO/2020/019Generalitat Valenciana: Grisolia GRISOLIA/2018/119 Generalitat Valenciana: GenT CIDEGENT/2018/034 CIDEGENT/2020/04

Effect of Vinyl Flooring on the Modal Properties of a Steel Footbridge

Damping ratios associated with non structural elements play an important role in mitigating the pedestrian-induced vibrations of slender footbridges. In particular, this paper analyses the effect of vinyl flooring on the modal parameters of steel footbridges. Motivated by the unexpected high experimental damping ratios of the first vibration modes of a real footbridge, whose deck was covered by a vinyl flooring, this paper aims at assessing more accurately the experimental damping ratios generated by this non-structural element on steel footbridges. For this purpose, a laboratory footbridge was built and vinyl flooring was installed on it. Its numerical and experimental modal parameters without and with the vinyl flooring were determined. The operational modal analysis method was used to estimate experimentally the modal parameters of the structure. The damping ratios associated with the vinyl flooring were obtained via the substraction between the experimental damping ratios of the laboratory footbridge with and without the vinyl flooring. An average increase of the damping ratios of 2.069% was observed due to the vinyl flooring installed. According to this result, this type of pavement may be a useful tool to significantly increase the damping ratios of steel footbridges in order to reduce pedestrian-induced vibrationsMinisterio de Economía y Competitividad DPI2014-53947-RFondo Europeo de Desarrollo Regional DPI2014-53947-

Sacrificio y cambio cósmico en Diamantes y pedernales, de José María Arguedas

Este trabajo analiza la realización textual del motivo del sacrificio en Diamantes y pedernales, de José María Arguedas, y las coincidencias que establece con el mito del cambio cósmico de la cultura andina. En el extenso discurso crítico arguediano, el tema del sacrificio ha sido analizado en estrecha relación con la tragedia y lo trágico; sin embargo, Horacio Legrás ha identificado un error bastante frecuente: la reiteración de dichos términos en un sentido adjetival, para caracterizar la complejidad de la trama o para referirse a los avatares de la vida del autor o al hecho de su suicidio, en detrimento de un empleo técnico y preciso.Tesi

Análisis del desarrollo de competencias genéricas en la formación de docente relacionadas con la implementación de proyectos ambientales escolares (PRAE) en los programas de Licenciatura en Ciencias Naturales de las instituciones de educación superior de Santiago de Cali: percepciones de expertos y egresados

Los Proyectos Ambientales Escolares (PRAE) son una herramienta pedagógica de carácter obligatorio para todas las Instituciones Educativas de Básica y Media del país, que usualmente son liderados por los maestros licenciados en ciencias naturales quienes deben encargarse de formularlo e implementarlo. Sin embargo, de dichos proyectos se reportan una serie de debilidades que le restan capacidad para la generación de espacios de aprendizaje significativos que promuevan el desarrollo de competencias en los estudiantes para la sostenibilidad ambiental. Si bien existen diferentes causalidades que limitan los PRAE, se ha identificado que las competencias genéricas de los docentes que los coordinan resultan determinantes para su funcionalidad, pues más que competencias genéricas en temas ambientales o pedagógicos, el desarrollo de estos proyectos también implican destreza para el trabajo en equipo, planificación del tiempo, creatividad e innovación, habilidades interpersonales, entre otros. Dicho esto, el presente trabajo representa una propuesta que pretende indagar si los programas de licenciatura en ciencias naturales le están apuntando al desarrollo de competencias genéricas que le aporten mayores capacidades a los docentes para el desarrollo de este tipo de proyectos

Precise Network Time Monitoring: Picosecond-level packet timestamping for Fintech networks

Network visibility and monitoring are critical in modern networks due to the increased density, additional complexity, higher bandwidth, and lower latency requirements. Precise packet timestamping and synchronization are essential to temporally correlate captured information in different datacenter locations. This is key for visibility, event ordering and latency measurements in segments as telecom, power grids and electronic trading in finance, where order execution and reduced latency are critical for successful business outcomes. This contribution presents Precise Network Time Monitoring (PNTM), a novel mechanism for asynchronous Ethernet packet timestamping which adapts a Digital Dual Mixer Time Difference (DDMTD) implemented in an FPGA. Picosecond-precision packet timestamping is outlined for 1 Gigabit Ethernet. Furthermore, this approach is combined with the White Rabbit (WR) synchronization protocol, used as reference for the IEEE 1588-2019 High Accuracy Profile to provide unprecedented packet capturing correlation accuracy in distributed network scenarios thanks to its sub-nanosecond time transfer. The paper presents different application examples, describes the method of implementation, integration of WR with PNTM and subsequently describes experiments to demonstrate that PNTM is a suitable picosecond-level distributed packet timestamping solutionNational project AMIGA7 RTI2018-096228-B-C32Andalusian project SINPA B-TIC-445-UGR1

Motion-Based Design of Passive Damping Systems to Reduce Wind-Induced Vibrations of Stay Cables under Uncertainty Conditions

Stay cables exhibit both great slenderness and low damping, which make them sensitive to resonant phenomena induced by the dynamic character of external actions. Furthermore, for these same reasons, their modal properties may vary significantly while in service due to the modification of the operational and environmental conditions. In order to cope with these two limitations, passive damping devices are usually installed at these structural systems. Robust design methods are thus mandatory in order to ensure the adequate behavior of the stay cables without compromising the budget of the passive control systems. To this end, a motion-based design method under uncertainty conditions is proposed and further implemented in this paper. In particular, the proposal focuses on the robust design of di erent passive damping devices when they are employed to control the response of stay cables under wind-induced vibrations. The proposed method transforms the design problem into a constrained multi-objective optimization problem, where the objective function is defined in terms of the characteristic parameters of the passive damping device, together with an inequality constraint aimed at guaranteeing the serviceability limit state of the structure. The performance of the proposed method was validated via its application to a benchmark structure with vibratory problems: The longest stay cable of the Alamillo bridge (Seville, Spain) was adopted for this purpose. Three di erent passive damping devices are considered herein, namely: (i) viscous; (ii) elastomeric; and (iii) frictions dampers. The results obtained by the proposed approach are analyzed and further compared with those provided by a conventional method adopted in the Standards. This comparison illustrates how the newly proposed method allows reduction of the cost of the three types of passive damping devices considered in this study without compromising the performance of the structure.Ministerio de Ciencia, Innovación y Universidades RT12018-099639-B-I00Universidad de Sevilla USE-17047-

Caracterización de los componentes de actividad física, dieta saludable y espacios libres de humo en 4 colegios del núcleo educativo No 4 de Pereira

La presente investigación tuvo por objeto la caracterización de los componentes de: Actividad Física, Dieta Saludable y Espacios Libres de Humo, en 4 colegios pertenecientes al núcleo educativo No 4 del Municipio de Pereira; pues se considera que la caracterización de estos hábitos en este sector es una base que puede permitir la generación de estrategias preventivas y de gran impacto social. Para este propósito se aplicó la Encuesta Mundial de Salud para Escolares, de la Organización Mundial de la Salud. Entre los resultados que se encontraron en cuanto a la actividad física, los estudiantes consideran que es buena. Sin embargo, aunque un gran porcentaje de estudiantes ya hacen actividad física y quieren aumentarlo, (32%) o quieren mantenerlo, (31%), un porcentaje significativo no tiene ningún interés por la actividad física (31%), lo que supone que la población tiende a ser sedentaria, pues se necesitan por lo menos 30 minutos diarios de actividad física entre 4 o 5 días a la semana e incluso se reporta que la actividad física por un tiempo superior a 60 minutos diarios reportará un beneficio aún mayor para la salud.1 Frente a la dieta saludable, consideran que es regular, pocos estudiantes ya llevan una dieta saludable (28%), un 26% de la población piensa que no tiene necesidad de llevar una dieta saludable y sólo a un 14% le gustaría llevarla y no sabe cómo hacerlo, lo que indica que para ellos el concepto de la dieta saludable que tienen, es el ideal, pues según estudios, la dieta se define como el conjunto y cantidades de los alimentos o mezclas de alimentos que se consumen habitualmente,2 y ellos consideran que se hace referencia a la privación de determinados alimentos por un tiempo determinado. Ahora, con respecto a los espacios libre de humo, un porcentaje importante de la población no piensa en defender los espacios libres de humo (37%) o ahora no piensa hacerlo (21%), o considera que no tiene la necesidad de defenderlos (17%), un 20%, son fumadores pasivos y un 48% no está de acuerdo con prohibir el cigarrillo en lugares públicos

Burnout syndrome in Spanish medical students

Background: Burnout syndrome is a frequent syndrome related to people that feel a deterioration in their daily activities due to highly demandant psychological requirements in their workplaces. Within last decades, this syndrome has been studied across medical professionals, concluding that stress levels that physicians suffer is high enough to make them develop burnout syndrome. In the case of medical students, there are some recent studies, although with small samples. For this reason, given that this phenomenon may produce a huge impact in medical students' development, the aim of this study is to analyze the influential factors that may contribute to its occurrence. Methods: The necessary information was gathered through a web-based questionnaire, divided in two parts. The first part of the survey included questions related to personal aspects of the students. Burnout related questions (second part) were divided in three subscales to evaluate exhaustion, cynicism, and academic efficacy levels. Results: Family support for studying medicine is associated with lower burnout levels in all three scales of the Maslach Burnout Inventory. The number of years spent in the degree show the opposite trend: the more years in the degree, the higher score in all burnout scales. Conclusions: Burnout syndrome is a problem among medical students in Spain that increases with the number of years studying medicine. It should be also noticed that family support and vocational studies are independent factors related to lower levels of burnout

Persistent-homology-based gait recognition

Gait recognition is an important biometric technique for video surveillance tasks, due to the advantage of using it at distance. In this paper, we present a persistent homology-based method to extract topological features (the so-called topological gait signature) from the the body silhouettes of a gait sequence. It has been used before in sev- eral conference papers of the same authors for human identi cation, gender classi cation, carried object detection and monitoring human activities at distance. The novelty of this paper is the study of the sta- bility of the topological gait signature under small perturbations and the number of gait cycles contained in a gait sequence. In other words, we show that the topological gait signature is robust to the presence of noise in the body silhouettes and to the number of gait cycles con- tained in a given gait sequence. We also show that computing our topological gait signature of only the lowest fourth part of the body silhouette, we avoid the upper body movements that are unrelated to the natural dynamic of the gait, caused for example by carrying a bag or wearing a coat.Ministerio de Economía y Competitividad MTM2015-67072-