Clima organizacional y el desempeño laboral de la empresa Conmetal y Servicios E.I.R.L. Nuevo Chimbote 2017

La presente investigación, tiene como propósito determinar la relación que existe entre Clima Organizacional y el Desempeño Laboral en la Empresa Conmetal y Servicios E.I.R,L, Nuevo Chimbote 2017", el cual cuenta con una población de 45 trabajadores, se utilizó la técnica de la encuesta y como instrumento el cuestionario el cual se aplicó a cada uno de los trabajadores, respecto a la metodología es una investigación cuantitativa, de tipo descriptivo correlacional y el diseño corresponde a una investigación no experimental de corte transversal. Para medir la correlación que existe entre las dos variables, se utilizó el coeficiente de correlación r de Pearson mediante el cual se obtuvo 0.729, que indica correlación fuerte entre las variables, es decir a mejor Clima Organizacional, mayor Desempeño Laboral o mal Clima Organizacional, bajo Desempeño Laboral. Con respecto al valor sig. (Bilateral) es 0.000 o llamado también p-valor es menor que 0.01, por lo que se rechaza la hipótesis nula es decir la relación entre las variables es altamente significativa.Tesi

The Teaching of Mathematics in Preschool Education Students

Este proyecto de investigación profundiza en las percepciones, desafíos y enfoques pedagógicos de futuros maestros de preescolar en el contexto de la enseñanza de las matemáticas a niños pequeños. La recopilación de datos se llevó a cabo principalmente a través de entrevistas en profundidad con los participantes, estructurando las entrevistas en torno a preguntas abiertas que les permitieron expresar sus opiniones y experiencias con respecto a la enseñanza de las matemáticas en el entorno preescolar. Además, se empleó una guía de entrevista que abordaba temas específicos, como la formación de maestros, enfoques pedagógicos y actitudes hacia las matemáticas en preescolar. Se utilizó un método de muestreo no probabilístico intencional para seleccionar a 20 participantes inscritos en un programa de educación preescolar. El estudio ha revelado valiosas percepciones sobre la importancia de enseñar matemáticas en la educación preescolar, los desafíos significativos que enfrentan los educadores, sus enfoques pedagógicos, estrategias para fomentar actitudes positivas hacia las matemáticas y la influencia de las actitudes y la formación del maestro en su capacidad para enseñar matemáticas en preescolar. La mayoría de los participantes considera que las matemáticas son de gran importancia en la educación preescolar, enfatizando la accesibilidad a conceptos matemáticos y la adaptación a las diferencias individuales como desafíos destacados. Pedagógicamente, los participantes tienden hacia enfoques basados en el juego y la exploración, y promueven la resolución de problemas y el pensamiento crítico. Demuestran un compromiso en abordar las diferencias individuales y promover una actitud positiva hacia las matemáticas. La mayoría ha recibido formación específica en matemáticas como parte de su educación como maestros y emplea la observación continua y la retroalimentación como su principal estrategia de evaluación.This research project delves into the perceptions, challenges, and pedagogical approaches of future preschool teachers in the context of teaching mathematics to young children. Data collection was primarily carried out through in-depth interviews with participants, structuring the interviews around open-ended questions that allowed them to express their views and experiences regarding the teaching of mathematics in the preschool setting. In addition, an interview guide was employed, addressing specific topics such as teacher training, pedagogical approaches, and attitudes toward preschool mathematics. A non-probabilistic intentional sampling method was utilized to select 20 participants enrolled in a preschool education program. The study has unveiled valuable insights into the significance of teaching mathematics in preschool education, significant challenges faced by educators, their pedagogical approaches, strategies to promote positive attitudes toward mathematics, and the influence of teacher attitudes and training on their capacity to teach preschool mathematics. The majority of participants consider mathematics to be of great importance in preschool education, emphasizing accessibility to mathematical concepts and adapting to individual differences as notable challenges. Pedagogically, participants lean toward play-based and exploratory approaches and promote problem-solving and critical thinking. They exhibit a commitment to addressing individual differences and promoting a positive attitude toward mathematics. Most have received specific mathematics training as part of their teacher education and employ continuous observation and feedback as their primary assessment strategy

Plan estratégico para mejorar la atención y satisfacción al cliente basado en la teoría de Porter en la empresa Vásquez Comercio y Distribución SRL (Vascomdi – SRL) de la ciudad de Chiclayo, 2008

El siguiente informe denominado: Plan estratégico para mejorar la atención y satisfacción al cliente basado en la teoría de Porter en la Empresa VÁSQUEZ Comercio y Distribuciones SRL (VASCOMDI – SRL) de la ciudad de Chiclayo, 2008, surge en base a la necesidad detectada en la empresa, la cual adolece de una adecuada atención a los clientes, esto conlleva a formular un Plan Estratégico, para cubrir esta necesidad. La atención adecuada de los clientes conlleva a una satisfacción de los mismos y nos asegura en emponderamiento de la empresa, así como el retorno de los mismos. Nuestro problema de investigación se centra en determinar ¿Qué características se deberán de tener en cuenta para diseñar un Plan Estratégico, con la finalidad de mejorar la atención y satisfacción al cliente basado en la Teoría de Michel Porter en la empresa VASCOMDI SRL?, así mismo nuestro objetivo general que rige nuestra investigación es diseñar un Plan Estratégico fundamentado en la Teoría de Michael Porter, con la finalidad de mejorar la atención y satisfacción al cliente. Del mismo modo hemos considerado necesario mencionar que la hipótesis de nuestro trabajo esta construida del siguiente modo: Si se diseña y ejecuta un Plan Estratégico para la mejora en la atención al cliente para empresa VASCOMDI de la ciudad de Chiclayo, entonces se mejorará la atención al cliente logrando la satisfacción de los mismos. La metodología de investigación en la cual se sustenta nuestro trabajo es de carácter descriptivo, su diseño implementado corresponde a un diseño no experimental, habiéndose trabajado en la presente con encuestas y entrevistas, las cuales han recogido la información en el segmento de los clientes que acuden a realizar sus compras y operaciones en la empresa, así mismo a los trabajadores y por último al cuerpo directivo. Como resultado de todo este proceso de campo hemos diseñado una propuesta basada en mejorar de atención al cliente.Tesi

Ether gas-sensor based on Au nanoparticles-decorated ZnO microstructures

Trabajo de Investigación derivado de la estancia Posdoctoral del Dr. Roberto LópezAn ether gas-sensor was fabricated based on gold nanoparticles (Au-NPs) decorated zinc oxide microstructures (ZnO-MS). Scanning electron microscope (SEM) and high-resolution transmission elec- tron microscope (HRTEM) measurements were performed to study morphological and structural proper- ties, respectively, of the ZnO-MS. The gas sensing response was evaluated in a relatively low temperature regime, which ranged between 150 and 250 C. Compared with a sensor fabricated from pure ZnO-MS, the sensor based on Au-NPs decorated ZnO-MS showed much better ether gas response at the highest working temperature. In fact, pure ZnO-MS based sensor only showed a weak sensitivity of about 25%. The improvement of the ether gas response for sensor fabricated with Au-NPs decorated ZnO-MS was attributed to the catalytic activity of the Au-NPs.Investigación realizada bajo proyecto UAEM 1025/2014RIF

Impact of Porous Silica Nanosphere Architectures on the Catalytic Performance of Supported Sulphonic Acid Sites for Fructose Dehydration to 5‐Hydroxymethylfurfural

5‐hydroxymethylfurfural represents a key chemical in the drive towards a sustainable circular economy within the chemical industry. The final step in 5‐hydroxymethylfurfural production is the acid catalysed dehydration of fructose, for which supported organoacids are excellent potential catalyst candidates. Here we report a range of solid acid catalysis based on sulphonic acid grafted onto different porous silica nanosphere architectures, as confirmed by TEM, N2 porosimetry, XPS and ATR‐IR. All four catalysts display enhanced active site normalised activity and productivity, relative to alternative silica supported equivalent systems in the literature, with in‐pore diffusion of both substrate and product key to both performance and humin formation pathway. An increase in‐pore diffusion coefficient of 5‐hydroxymethylfurfural within wormlike and stellate structures results in optimal productivity. In contrast, poor diffusion within a raspberry‐like morphology decreases rates of 5‐hydroxymethylfurfural production and increases its consumption within humin formation

Main Factors for Understanding High Impacts on CSR Dimensions in the Finance Industry

The objective of this study is to explore empirically the dimensions that generate high impact in the finance industry to better understand its contribution from a Corporate Social Responsibility (CSR) perspective. We analyze data concerning impacts of finance sector firms certified by B Corp in order to identify the combinations that are necessary and/or sufficient to obtain a recognition of their high impact generation. The methodology followed to identify the impact dimensions is fsQCA, (fuzzy set Qualitative Comparative Analysis), a qualitative comparative analysis method applied to a sample of finance firms (n-181). The results indicate that financial sector firms exhibited four combinations focusing on different impact dimensions. Specifically, the first route indicates that a high degree of focus on customers and communities is sufficient to obtain a high impact score. The second path signals that the combination of the impacts on customers and corporate governance could lead to the same result, while in the third pathway the focus would be on the employees. Finally, the fourth route indicates that some financial firms focus strongly on their communities, corporate governance and their employees, but very weakly on the environmental dimension. Consequently, diverse combinations of CSR dimensions characterize financial sector contributions to impact generation and sustainable development

Catalytic transfer hydrogenation of furfural to furfuryl alcohol over calcined MgFe hydrotalcites

Catalytic transfer hydrogenation is an alternative catalytic approach for the reduction of carbonyl groups, instead of the use of dihydrogen gas. In this sense, a series of catalysts has been prepared by thermal treatment of layered double hydroxides, hydrotalcite type, of Mg(II) and Fe(III), with different Mg/Fe molar ratios. The resulting mixture of metal oxides was characterized by X-ray diffraction, TEM, N2 adsorption-desorption, CO2-TPD, NH3-TPD and XPS, and then catalysts were tested in the Meenwein-Ponndorf-Verley (MPV) reduction of furfural to obtain furfuryl alcohol. The catalytic results show that the catalysts with a Mg/Fe molar ratio of 3 allows reaching the highest furfural conversion at a lower reaction time, with a FOL yield close to 90% after 6 h of reaction at 443 K. The detailed analysis of these catalysts also revealed that the basicity has a more predominant role in the MPV reaction than acid sites.Spanish Ministry of Innovation, Science and Universities (Project RTI2018-094918-B-C44) and FEDER (European Union) funds. J.A.C. and C.G.S. thank University of Malaga for contracts of PhD incorporation. R.M.T. thanks to the Spanish Ministry of Economy and Competitiveness (IEDI-2016-00743) for the financial support within the I3 program

Auto-positioning solar panel for harvesting power system in wsn marine buoys

Peer Reviewe

Reduced proliferation of endothelial colony-forming cells in unprovoked venous thromboembolic disease as a consequence of endothelial dysfunction

Background Venous thromboembolic disease (VTD) is a public health problem. We recently reported that endothelial colony-forming cells (ECFCs) derived from endothelial cells (EC) (ECFC-ECs) from patients with VTD have a dysfunctional state. For this study, we proposed that a dysfunctional status of these cells generates a reduction of its proliferative ability, which is also associated with senescence and reactive oxygen species (ROS). Methods and results Human mononuclear cells (MNCs) were obtained from peripheral blood from 40 healthy human volunteers (controls) and 50 patients with VTD matched by age (20−50 years) and sex to obtain ECFCs. We assayed their proliferative ability with plasma of patients and controls and supernatants of cultures from ECFC-ECs, senescence-associated β-galactosidase (SA-β-gal), ROS, and expression of ephrin-B2/Eph-B4 receptor. Compared with cells from controls, cells from VTD patients showed an 8-fold increase of ECFCs that emerged 1 week earlier, reduced proliferation at long term (39%) and, in passages 4 and 10, a highly senescent rate (30±1.05% vs. 91.3±15.07%, respectively) with an increase of ROS and impaired expression of ephrin-B2/Eph-4 genes. Proliferation potential of cells from VTD patients was reduced in endothelial medium [1.4±0.22 doubling population (DP)], control plasma (1.18±0.31 DP), or plasma from VTD patients (1.65±0.27 DP). Conclusions As compared with controls, ECFC-ECs from individuals with VTD have higher oxidative stress, proliferation stress, cellular senescence, and low proliferative potential. These findings suggest that patients with a history of VTD are ECFC-ECs dysfunctional that could be associated to permanent risk for new thrombotic events