63 research outputs found
Reconstruction, with tunable sparsity levels, of shear wave velocity profiles from surface wave data
No full textThe analysis of surface wave dispersion curves is a way to infer the vertical distribution of shear wave velocity. The range of applicability is extremely wide: going, for example, from seismological studies to geotechnical characterizations and exploration geophysics. However, the inversion of the dispersion curves is severely ill-posed and only limited efforts have been put in the development of effective regularization strategies. In particular, relatively simple smoothing regularization terms are commonly used, even when this is in contrast with the expected features of the investigated targets. To tackle this problem, stochastic approaches can be utilized, but they are too computationally expensive to be practical, at least, in case of large surveys. Instead, within a deterministic framework, we evaluate the applicability of a regularizer capable of providing reconstructions characterized by tunable levels of sparsity. This adjustable stabilizer is based on the minimum support regularization, applied before on other kinds of geophysical measurements, but never on surface wave data. We demonstrate the effectiveness of this stabilizer on (i) two benchmark—publicly available—data sets at crustal and near-surface scales and (ii) an experimental data set collected on a well-characterized site. In addition, we discuss a possible strategy for the estimation of the depth of investigation. This strategy relies on the integrated sensitivity kernel used for the inversion and calculated for each individual propagation mode. Moreover, we discuss the reliability, and possible caveats, of the direct interpretation of this particular estimation of the depth of investigation, especially in the presence of sharp boundary reconstructions
Sparse laterally constrained inversion of surface wave dispersion curves via minimum gradient support regularization
No full textWe present a 1D laterally constrained inversion of surface wave dispersion curves based on the minimum gradient support regularization, which allows solutions with tunable sharpness in both vertical and horizontal directions. The forward modelling consists of a finite elements approach incorporated in a flexible non-parametric gradient-based inversion scheme, which has already demonstrated good stability and convergence capabilities when tested on other kinds of data. Our deterministic inversion procedure is performed in the shear-wave velocity log-space as we noticed that the associated Jacobian shows a reduced model dependency, and this, in turn, decreases the risks of local non-convexity. We show several synthetics and one field example to demonstrate the effectiveness and the applicability of the proposed approach
Motivación laboral y compromiso organizacional en la satisfacción laboral de los juzgados penales de la sede Anselmo Barreto Lima, 2018
No full textLa investigación titulada Motivación laboral y compromiso organizacional en la satisfacción
laboral de los trabajadores administrativos de los Juzgados Penales de la sede Anselmo Barreto
Lima, 2018, cuyo objetivo fue determinar la influencia de la motivación laboral y compromiso
organizacional en la satisfacción laboral de los trabajadores administrativos de los Juzgados
Penales de la sede Anselmo Barreto Lima, 2018.
El enfoque fue cuantitativo, de tipo básica, el diseño no experimental y método
hipotético deductivo, la población en estudio estuvo integrada por 279 trabajadores de los
juzgados penales de la sede Anselmo Barreto en el Centro de Lima – 2017 y la muestra fue de
162 secretarios judiciales, la técnica fue la encuesta y los instrumentos fueron los cuestionarios,
la prueba de hipótesis se realizó con regresión logística ordinal.
La investigación concluyó que la motivación laboral y el compromiso organizacional
inciden en la satisfacción laboral de los trabajadores administrativos de los Juzgados Penales
de la sede Anselmo Barreto Lima, 2018; cabe resaltar que los datos se ajustan en un 41.4% y
el modelo es explicado en 46.6% y 24.4%, en consecuencia entre el 53.4% y 75.6% la
satisfacción laboral es explicado por otras variables que no fueron objeto del estudio, pero que
amerita explorar en otra investigación
Estrategias de afrontamiento frente al estrés relacionado con el trabajo en casa, en mujeres adultas cabeza de hogar de Villavicencio
No full textEsta es una propuesta de investigación, surge en el seminario de profundización en seguridad y salud en el trabajo, de la Universidad Cooperativa de Colombia, este tiene como objetivo, describir las estrategias de afrontamiento ante el estrés relacionado con el trabajo en casa, en mujeres adultas cabeza de hogar, de la ciudad de Villavicencio, destacando como tema principal el estrés, debido a que en la actualidad este es un tema común en relación a factores psicológicos, fisiológicos y laborales, debido a las condiciones sociales y ambientales a las que el ser humano se encuentra inmerso. Por ello, es importante saber identificar adecuadamente la presencia del estrés laboral en mujeres y sus estrategias de afrontamiento para así generar un cambio a nivel individual y social, contribuyendo, además, a la disminución de los factores y los niveles de estrés, favoreciendo así un desarrollo integral del personal que trabaja en casa, de manera que el estudio que se llevó a cabo es de tipo cualitativo descriptivo, teniendo en cuenta criterios de inclusión; entre ellos ser mujeres que laboren en la modalidad de trabajo conocida como trabajo en casa, de la Ciudad de Villavicencio y contar con un rango de edad entre los 27 y 49 años de edad, además ser mujeres cabeza de hogar.This is a research proposal, it arises in the seminar to deepen safety and health at work, of the Cooperative University of Colombia, this aims to describe the coping strategies in the face of stress related to work at home, in women adult heads of household, from the city of Villavicencio, highlighting stress as the main theme, because at present this is a common theme in relation to psychological, physiological and labor factors, due to the social and environmental conditions to which the human being is immersed. For this reason, it is important to know how to properly identify the presence of work stress in women and their coping strategies in order to generate a change at an individual and social level, also contributing to the reduction of stress factors and levels, thus favoring a comprehensive development of staff working at home, so that the study carried out is qualitative and descriptive, taking into account inclusion criteria; Among them are women who work in the work modality known as work at home, from the City of Villavicencio and have an age range between 27 and 49 years of age, in addition to being female heads of household.Resumen. -- Introducción. -- Planteamiento del problema. -- Justificación. -- Objetivos. -- Marco referencial. -- Marco empírico. -- Metodología. -- [email protected]@campusucc.edu.c
Factores de riesgo psicosocial frente al acoso sexual laboral en trabajadores del Banco Popular de Villavicencio
No full textEl acoso sexual es una realidad que existe en la sociedad, pero se mantiene de manera silenciosa, influyendo de manera negativa la vida tanto laboral como personal de las víctimas. Esta investigación sitúa el acoso sexual en el escenario laboral de los trabajadores de la ciudad de Villavicencio-Meta, con el fin de identificar los factores que se presentan en estos espacios a los cuales están inmersos las personas y que han pasado desapercibido por las organizaciones, la justicia y que en muchos casos han sido situaciones que no han sido expresadas de ninguna forma y esto ha hecho que se repriman problemáticas que muchas veces crean alteraciones en las conductas de las víctimas. El objetivo de la investigación es describir los factores de riesgo psicosocial que se evidencian en los trabajadores de Villavicencio que han sido víctimas de este flagelo, además, se implementará un cuestionario de tipo entrevista semi- estructurada como instrumento para la recolección de datos tipo fenomenológico , aplicándola a 15 trabajadores que pertenezcan al banco popular de la ciudad de Villavicencio a través de un muestreo por conveniencia, con los resultados obtenidos se realizara la interpretación por medio del programa Atlas Ti, se pretende generar orientaciones que sirvan como guía de prevención para las empresas que existen en la ciudad de Villavicencio, evidenciar los daños psicosociales que se generan en los afectados, contribuyendo así a la rama de la psicología dentro de las organizaciones.Sexual harassment is a reality that exists in society, but it remains silent, negatively influencing both the work and personal life of the victims. This research places sexual harassment in the workplace of workers in the city of Villavicencio-Meta, in order to identify the factors that occur in these spaces to which people are immersed and that have gone unnoticed by organizations, justice and that in many cases have been situations that have not been expressed in any way and this has caused problems to be repressed that often create alterations in the behavior of the victims. The objective of the research is to describe the psychosocial risk factors that are evident in the workers of Villavicencio who have been victims of this scourge, in addition, a semi-structured interview type questionnaire will be implemented as an instrument for the collection of phenomenological data, applying it to 15 workers who belong to the popular bank of the city of Villavicencio through a convenience sampling, with the results obtained the interpretation will be carried out through the Atlas Ti program, it is intended to generate guidelines that serve as a prevention guide for companies that exist in the city of Villavicencio, show the psychosocial damages that are generated in those affected, thus contributing to the branch of psychology within organizations.Resumen. -- Introducción. -- Planteamiento del problema. -- Justificación. -- Objetivos. -- Marco referencial. -- Metodología. -- Referencias. -- Apé[email protected]@campusucc.edu.c
Dance and child psychomotor development: reflections
No full textSomos seres vivos em constante movimento. Pensando que o desenvolvimento motor ocorre simultaneamente com os processos do desenvolvimento cognitivo, a dança pode ser um meio potente para o desenvolvimento integral do ser, desde a infância. O propósito deste trabalho é explorar e investigar a importância da Dança como instrumento no desenvolvimento motor e cognitivo infantil; a pesquisa busca explorar modos como a dança pode ser incorporada no ambiente escolar. Não apenas como uma prática superficial, mas como um meio poderoso de interação e estímulo cognitivo. A metodologia abordada será qualitativa, utilizando minhas vivências práticas que têm a dança como elemento-chave na Educação Infantil. As atividades foram planejadas e pensadas visando estimular e incentivar a criatividade, fazendo com que o processo de aprendizagem se torne mais leve e estimulante, tornando o momento de aprendizagem prazeroso
La investigación como inclusión educativa con sentido social
No full textEste material contempla la investigación como inclusión educativa: tema en desarrollo, en reconocimiento, en la inserción de las diferencias del otro. Compromiso desde la educación en la inclusión para el desarrollo de una comunidad en igualdad de condiciones con responsabilidad de todos para todos. Es preciso tener en cuenta que no solo en un salón de clase se puede investigar y sensibilizar acerca de este tema, sino en todo lugar donde se puedan llevar a cabo procesos de enseñanza. La inclusión es un proceso que asegura que todas las personas tienen las mismas oportunidades para participar plenamente en la vida, social, política y económica. Las investigaciones en inclusión educativa generan conocimiento crucial para la toma de decisiones sociales
Inversion strategies for seismic surface waves and time-domain electromagnetic data with application to geotechnical characterization examples.
No full textGeophysical methods are broadly used to map the subsurface. Their ability to investigate large areas in a short time and to reach significant depths with good resolution makes them suitable for a wide range of applications: from hydrological studies, mineral exploration, archaeological investigations to geotechnical characterization.
Unfortunately, most of the geophysical methods are ill-posed. Thus, to be able to effectively invert the geophysical data and get meaningful models of the subsurface a priori information needs to be included in the process. This is the basic idea behind the inversion theory. This thesis deals with the inversion of two types of geophysical measurements:
the Seismic Surface Waves (SSW) data and the Time Domain Electromagnetic (TDEM) observations.
The present work consists of two parts: (1) The first one is about possible implementations of the minimum gradient support stabilizer into a SSW inversion routine and its extension to the laterally constrained case. By means of this novel approach, it is possible to tune the level of sparsity of the reconstructed velocity model, providing a solution with the desirable characteristics (smooth or sharp) in both directions (vertically and laterally).
The capabilities of the proposed approach have been tested via applications on synthetic and measured data. (2) The second part of the thesis is about the joint interpretation of SSW and TDEM measurements for an improved geotechnical characterization of an area intended for construction. In this case, the SSW results, together with other ancillary data, are used as prior information for the subsequent inversion of TDEM measurements.
In this respect, the SSW results have been translated into pieces of information to be used in the TDEM inversion via a petrophysical relationship.
This work is coherent with one of the goals of the United Nations Agenda 2030 for sustainable development, specifically, the item 11b, as geotechnical characterization is one of the essential components for the design of civil engineering works, ensuring the necessary safety and resilience to natural disasters and climate change. However, the field of application of the proposed approaches is very broad as they can also be used, e.g., for groundwater mapping, as well as for the evaluation of aquifer contamination. In this respect, the present work is also in line with items 6.1, 6.3 and 6.4 of the 2030 UN Agenda
A investigação como inclusão educativa com sentido social
No full textThis paper examines research as educational inclusion: a topic about development, recognition, and the introduction of the other’s differences; a commitment from education with inclusion for the development of a community under the same conditions, where everyone is everyone else’s responsibility. It isnecessary to take into consideration that research and awareness on this topic not only take place in the classroom, but in any place where the teaching process can be carried out. Inclusion is a process which guarantees that everybody has the same opportunities to fully participate in social, political and economiclife. Researches in educational inclusion produce essential knowledge for making social decisions. Este material contempla la investigación como inclusión educativa: tema en desarrollo, en reconocimiento, en la inserción de las diferencias del otro. Compromiso desde la educación en la inclusión para el desarrollo de una comunidad en igualdad de condiciones con responsabilidad de todos para todos. Es preciso tener en cuenta que no solo en un salón de clase se puede investigar y sensibilizar acerca de este tema, sino en todo lugar donde se puedan llevar a cabo procesos de enseñanza. La inclusión es un proceso que asegura que todas las personas tienen las mismas oportunidades para participar plenamente en la vida, social, política y económica. Las investigaciones en inclusión educativa generan conocimiento crucial para la toma de decisiones sociales.Este material contempla a investigação como inclusão educativa: tema em desenvolvimento, em reconhecimento, na inserção das diferenças do outro. Compromisso desde a educação na inclusão para o desenvolvimento de uma comunidade em igualdade de condições com responsabilidade de todos paratodos. É preciso ter em conta que não só numa sala de aula pode ser pesquisado e sensibilizar a respeito deste tema, senão em todo local onde possam ser levado a cabo processos de ensino. A inclusão é um processo que assegura que todas as pessoas têm as mesmas oportunidades para participar plenamentena vida, social, política e econômica. As investigações em inclusão educativa geram conhecimento crucial para a tomada de decisões sociais
Modelação da interação lateral balastro-travessa em vias-férreas
No full textA estabilidade lateral da via-férrea e sua importância para o comportamento
adequado da mesma é um fator determinante nos caminhos de ferro. Deste
modo, o presente estudo visa, numa primeira parte, introduzir o leitor ao assunto
disponibilizando de forma sucinta e clara informações sobre a via férrea em
geral e a estabilidade lateral da mesma, obtidas através de uma extensa revisão
bibliográfica.
Ao longo da investigação, com base no estudo da literatura existente, foi elaborada
uma tabela com valores para resistência lateral em alguns tipos de casos.
Numa fase posterior, foi elaborada a modelação e análise da via férrea com
recurso ao programa de elementos finitos Pegasus que permite a introdução de
cargas dinâmicas e um modelo constitutivo para o comportamento resiliente do
balastro não linear, visando sempre o comportamento lateral da via.
Com esse estudo, pretende-se auxiliar os desenvolvimentos futuros de modelos
mais simples que utilizem molas e amortecedores, fornecendo uma aproximação
para os valores de rigidez a adoptar nessas molas
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