El discernir de familias huerteras en relación con el contexto social-educativo durante la pandemia Covid-19

El propósito de esta investigación se centró en valorar la integración de saberes, haceres, emprenderes a la comprensión de la realidad social de familias huerteras con la finalidad de fortalecer la propuesta pedagógica social de aprendizaje verde en red en proyección ecológica de desarrollo sostenible de la glocalidad. La investigación se apoyó en un enfoque cualitativo-documental en postura epistemológica autónoma de los informantes, a partir de la cual se construye el objeto de investigación, descubriendo e interpretando la realidad impresa en fuentes de información, donde la unidad de análisis son los propios documentos electrónicos recogidos a través de e-mail y grupos whatsapp. Se detectó interés esencial de educar la participación ciudadana, con racionalidad práctica – teórica – práctica, comprensión del beneficio saludable consciente en aprendizaje cotidiano, dinámico de agricultura urbana y rural. Como reflexión se fortifica la actitud positiva en continuar sembrando y participar en instituciones educativas para divulgar conocimiento desarrollado a través de las vivencias del proceso de siembra

Trabajo en equipo y motivación laboral de los colaboradores de una empresa del sector de higiene personal, Lima, 2019

En la actualidad muchas empresas reconocen la importancia de trabajar en equipo, ya que saben que esta es una estrategia para conseguir los objetivos. Muchas empresas saben por experiencia que trabajar en equipo es una manera efectiva para conseguir la productividad en la organización. El trabajo en equipo beneficia a todos en una empresa, debido a que si los trabajadores se apoyan mutuamente el tiempo empleado en una actividad laboral será mucho menor. Esta eficiencia del trabajador ayuda a la empresa a cumplir sus compromisos y sus objetivos planteados y aumenta la motivación de su personal. Los jefes de esta organización, objeto de estudio, no muestran mucha preocupación en que sus trabajadores trabajen en equipo, además el personal no muestra interés en trabajar en conjunto, cada uno prefiere trabajar de manera individual sin importarle el resto, encima ven a su compañero como si fuera competencia, buscando siempre sobresalir sobre los demás. La presente investigación pretende determinar de qué manera el trabajo en equipo se relaciona con la motivación laboral de los colaboradores de una empresa del sector de higiene personal. Esta organización es muy reconocida y muy exitosa, pero no se preocupa en fomentar el trabajo en equipo, este descuido afecta mucho el entorno laboral, ya que ocasiona retrasos y un bajo desempeño, además esta situación desanima mucho a los colaboradores generándoles frustración y desmotivación, creándose muchas reacciones negativas en el talento humano. Por esta razón en esta investigación se presentarán las respectivas recomendaciones para eliminar estas debilidades que tanto afectan a la empresa.Nowadays many companies recognize the importance of teamwork, since they know that this is a strategy to achieve their objectives. Many companies know from experience that teamwork is an effective way to achieve productivity in the organization. Teamwork benefits everyone in a company, because if workers support each other the time spent on a work activity will be much less. This worker efficiency helps the company to meet its commitments and objectives and increases the motivation of its personnel. The bosses of this organization, the object of study, do not show much concern for their workers to work as a team, in addition the staff does not show interest in working together, each one prefers to work individually without caring about the rest, on top of that they see their partner as if it were competition, always seeking to excel over the others. This research aims to determine how teamwork is related to the work motivation of employees of a company in the personal hygiene sector. This organization is well known and very successful, but it does not care about promoting teamwork, this neglect greatly affects the work environment, as it causes delays and poor performance, also this situation discourages a lot of employees generating frustration and demotivation, creating many negative reactions in human talent. For this reason, this research will present the respective recommendations to eliminate these weaknesses that affect the company so much

Modelo de estrategias interactivas colaborativas para el aprendizaje del individuo vegetal

The purpose of the study was the design of a systematic procedural model of interactive-collaborative strategies for meaningful learning of the vegetable individual. The research is qualitative with a hermeneutic interpretive phenomenological approach, the scenario: the classroom of the theoretical-practical courses in Plants Biology and Plants Organography of the Biology Specialty of IPMAR. The analysis of verbalizations was carried out through the constant comparative method, finding a relationship between training, search actions and strategy construction, mediated by the teacher. It is concluded as an authentic model product of formative research in the learning environment, as well as the systematization, deepening and application of knowledge in the exchange of collective discussion, of quality in interactions, and decided self-regulatory function of learning for each student.El propósito del estudio fue el diseño de un modelo sistemático procesual de estrategias interactivas-colaborativas para el aprendizaje con significado del individuo vegetal. La investigación es cualitativa, con un enfoque fenomenológico interpretativo hermenéutico, cuyo escenario correspondió con: el aula de los cursos teórico-práctico de Biología Vegetal y Organografía Vegetal, de la especialidad Biología del IPMAR. El análisis de las verbalizaciones se realizó a través del método comparativo constante, encontrando una relación entre la formación, acciones de búsqueda y construcción de la estrategia, mediados por el docente. Se concluye que el diseño propuesto, constituye un modelo auténtico, producto de una investigación formativa en el ambiente de aprendizaje, así como la sistematización, profundización y aplicación del conocimiento en el intercambio de la discusión colectiva, de calidad en las interacciones, y decidida función autorreguladora del aprendizaje por cada estudiante

Tuned Mass Dampers for Response Reduction of a Reinforced Concrete Chimney Under Near-Fault Pulse-Like Ground Motions

Publisher's version (útgefin grein)The article investigates response mitigation of a reinforced concrete (RC) chimney subjected to pulse-like near-fault ground motions using tuned mass damper (TMD) schemes. The total height of the chimney is 265 m with a mass of 11,109 ton. Three TMD schemes are used: single tuned mass damper (STMD), multiple TMDs having equal stiffness (w-MTMDs) and multiple TMDs having equal masses (e-MTMDs). The STMD is tuned to the fundamental frequency of the chimney while both w-MTMDs and e-MTMDs have three TMDs for controlling each of the first and second modes (total of six TMDs) of vibration. Response of the uncontrolled and controlled structures is calculated for 69 recorded ground motions containing a dominant velocity pulse. Displacement and acceleration at top node of the RC chimney are the response of interest for performance assessment. It is found that e-MTMDs are more effective and robust than other schemes. It is also found that the pulse period of ground motion plays a very important role in how effective the control schemes are. There is a large variability in the reduction of response across these ground motions, and optimization methods independent of ground motion are not robust. There is a need for more advanced optimization methods incorporating information about local seismic sources.We acknowledge support from University of Iceland Research Fund.Peer Reviewe

Shared Tuned Mass Dampers for Mitigation of Seismic Pounding

Publisher's version (útgefin grein)This study explores the effectiveness of shared tuned mass damper (STMD) in reducing seismic pounding of adjacent buildings. The dynamics of STMDs is explored through numerical simulations of buildings idealized as single and multiple degree of freedom oscillators. An optimization method proposed in the literature is revisited. It is shown that the optimization results in two different solutions. The first one corresponds to the device being tuned to one of the buildings it is attached to. The second solution corresponds to a very stiff system where the TMD mass hardly moves. This solution, which has been described as an STMD in the literature, is shown to be impractical due to its high stiffness and use of a heavy stationary mass that plays no role in response mitigation but adds unnecessary load to the structure. Furthermore, it is shown that the second solution is equivalent to a viscous coupling of the two buildings. As for the properly tuned solution, i.e., the first solution, sharing the device with an adjacent building was found to provide no added benefits compared to when it is placed on one of the buildings. Based on results from a large set of real earthquake ground motions, it is shown that sharing a TMD mass with an adjacent building, in contrary to what is reported in the literature, is not an effective strategy.This research was funded by University of Iceland Research Fund.Peer Reviewe

Strong ground motion in the epicentral area of the 2020-2021 earthquake swarm in the Reykjanes Peninsula, Iceland

The Geldingadalur eruption in the Reykjanes Peninsula on 19 March 2021 was preceded by several earthquakes of volcano-tectonic origin throughout 2020 and 2021. Seven earthquakes with magnitude M≥5 took place during the swarm, all of them recorded by the Icelandic Strong Motion Network operated by the Earthquake Engineering Research Centre of the University of Iceland. In this paper we present salient features of strong ground motion in the epicentral area caused by the swarm. Interestingly, earthquakes as small as M5.0 caused peak ground acceleration (PGA) larger than the 475-year return period PGA at a town near the epicentral area. At two recording stations, unusually high energy content at vibration periods <0.3s was detected, with spectral accelerations exceeding the design values. The largest recorded horizontal PGA was ~0.4g at Krýsuvík, station, which is the strongest PGA recorded in Iceland since the MW6.3 2008 Ölfus Earthquake. For this station we present horizontal-to-vertical spectral ratios indicating likely site-effects. We also compare the attenuation of PGA of the largest event of the sequence with two groundmotion prediction equations (GMPEs). The recorded PGA attenuation is well captured by a local GMPE.This work was partly financed by the SERICE project funded by a Grant of Excellence from the Icelandic Centre for Research (RANNIS), Grant number: 218149-051. The authors also acknowledge support from the University of Iceland Research Fund. The authors wish to thank the Icelandic Meteorological Office for access to the earthquake catalogue.Peer Reviewe

Resonant Inelastic X-Ray Scattering from Valence Excitations in Insulating Copper-Oxides

We report resonant inelastic x-ray measurements of insulating La$_2$CuO$_4$ and Sr$_2$CuO$_2$Cl$_2$ taken with the incident energy tuned near the Cu K absorption edge. We show that the spectra are well described in a shakeup picture in 3rd order perturbation theory which exhibits both incoming and outgoing resonances, and demonstrate how to extract a spectral function from the raw data. We conclude by showing {\bf q}-dependent measurements of the charge transfer gap.Comment: minor notational changes, discussion of anderson impurity model fixed, references added; accepted by PR