Qualidade de vida profissional e a disposição à mudança organizacional em funcionários de empresas da cidade de Bogotá - Colômbia

O propósito desta pesquisa foi determinar a relação entre a qualidade de vida profissional e a disposição à mudança organizacional numa amostra de 100 funcionários de empresas da cidade de Bogotá. Realizou-se sob um desenho transversal correlacional por meio da aplicação de dois instrumentos: o instrumento de medição de mudança organizacional (García e Forero, 2010) e o de qualidade de vida percebida em organizações (Gómez-Rada, 2011). A participação da população foi voluntária. A análise dos dados foi realizada por meio do rho de Spearman. Os resultados obtidos mostram uma correlação significativa a 0.001 com todas as variáveis de mudança organizacional e de qualidade de vida, exceto as de resistência à mudança. Esses achados sugerem que alguns dos aspectos a ressaltar são a importância da qualidade de vida e do compromisso com as tarefas a realizar visto que estes definem as metas e os objetivos propostos pela entidade e determinam o trabalho e a produtividade dos empregados, assim como sua disposição à mudança.The purpose of the research was to determine the relationship between quality of work life and readiness to organizational change in a sample of 100 company workers in the city of Bogota. It was conducted following a correlational cross-sectional design through the application of two instruments: one that measures organizational change (BMI) (García & Forero, 2010) and another one that assesses perceived quality of life in organizations (Gómez - Rada, 2011). The sample participation was voluntary and data were analyzed using Spearman’s Rho. Results show a significant correlation at 0.001 in all the variables of organizational change and quality of life with the exception of resistance to change. This suggests that some of the aspects to be highlighted are the importance of quality of life and commitment to the tasks to be performed as these define the goals and objectives set by the entity and frame the work and productivity of employees as well as their readiness to change. Key words: organizational change, quality of work life.El propósito de la investigación fue determinar la relación entre la calidad de vida laboral y la disposición al cambio organizacional en una muestra de 100 funcionarios de empresas de la ciudad de Bogotá. Se realizó bajo un diseño transversal correlacional, a través de la aplicación de dos instrumentos: el instrumento de medición de cambio organizacional (IMC) (García & Forero, 2010) y el de calidad de vida percibida en organizaciones (Gómez – Rada, 2011). La participación de la población fue voluntaria. El análisis de los datos se realizó por medio del Rho de Spearman. Los resultados obtenidos muestran una correlación significativa al 0.001 con todas las variables de cambio organizacional y de calidad de vida, excepto las de resistencia al cambio. Estos hallazgos sugieren que algunos de los aspectos a resaltar son la importancia de la calidad de vida y el compromiso con las tareas a realizar, ya que estos definen las metas y objetivos planteados por la entidad y enmarcan el trabajo y la productividad de los empleados, al igual que su disposición al cambio

Caracterización fundamental de superficies metálicas a condiciones relevantes para la catálisis

Heterogeneous catalysis involves chemisorption, reactions of chemisorbed species, and desorption of the products formed. The enthalpies and entropies for these elementary steps and their transition states provide the thermodynamic context that allows rigorous interpretations of the rates and selectivities of chemical reactions mediated by surfaces. The measurement of rates and/or thermodynamic properties at conditions relevant for catalysts and in the absence of mass and heat transport limitations are required for the proper reactor and catalyst design. Different challenging examples are provided, in which chemical rates and/or thermodynamic properties are measured under rigorous kinetic or thermodynamic conditions, giving information regarding the nature of the active metal surfaces and their role at reaction conditions. Among the cases to be presented are the alkane oxidation reactions on noble metals, Pd-PdO phase transition and its consequences for catalysis, and the surface characterization of metals by H2 chemisorption at elevated temperatures. Alkane-O2 (CH4 and C2H6) reactions are highly exothermic and tend to occur within the length scale of conductive or convective heat and mass transfer, which lead to severe gradients within undiluted catalyst pellets and reactors. Extensive dilution within the pellets and reactor has been used to get kinetic and isotopic data for Alkane-O2 reactions on supported Pt, Rh and Pd. These data have shown that CO and H2 do not form via direct alkane partial oxidation but instead via sequential combustion-reforming pathways. Alkane-O2 reactants form CO2 and H2O on Pt in three kinetic regimes (KR), each with distinct rate equations, kinetically-relevant steps, most abundant surface intermediates (MASI), and cluster size effects. Transitions among these regimes are determined by the prevalent steady-state coverages of chemisorbed oxygen (O*), which are given by O2 pressure when O2 dissociation is equilibrated and by O2 to Alkane ratios when it is irreversible. Mechanistic interpretations remain valid for other metals such as Pd, and the difference in reactivity among metals is correlated to O* binding strengths when O* is involved in the kinetically-relevant steps. On Pd and Rh, however, the clusters undergo phase transition to PdO and RhO2, leading to an additional kinetic regime characterized by an abrupt increase in reactivity caused by the transition from metal to oxide. Ex-situ O2 uptake measurements, at equilibrium, were performed to correlate the oxygen content during the phase transition with the measured rates at reaction conditions. Another example is given by the use of dissociative H2 chemisorption methods at conditions relevant for catalysis as a thermodynamic probe instead of mere site counting technique, in which differential enthalpies and entropies of adsorption are obtain to probe the non-uniformity of cluster surfaces. H-atoms formed via H2 dissociation are attractive titrants because of the reversible nature of the adsorption processes and the well-defined adsorption stoichiometry, but also because of the ubiquitous involvement of H-atoms in hydrogenation-dehydrogenation catalysis.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Descripción de diferencias en determinados factores motivacionales de los empleados que pertenecen al departamento administrativo y de producción de una empresa en crisis económica de la ciudad de Bogotá

This research with a transectional descriptive design had as objective to do a characterization of possible differences in some motivational factors of employees that work in the administrative and production departments in a company that has had a long period of economical crisis. 132 workers were selected using a non probabilistic intentional sample. As instrument was employed the Cuestionario de Motivación para el Trabajo (CMT). The results were analyzed by means of descriptive statistical (X, Me, DT) and inferencials (anova of a factor and t of student) to characterize the motivational divergences by departments, areas, kinds of contract and genres, in each variable that composes the test. Significant differences were found between affiliation and wage for the departments with a α= 0.05Esta investigación con un diseño transeccional descriptivo tuvo como objetivo realizar la caracterización de posibles diferencias en determinados factores motivacionales en los empleados de los departamentos administrativo y de producción de una empresa en crisis económica. Se consideró a 132 trabajadores, seleccionados mediante un muestreo no probabilístico intencional. Como instrumento se empleo el Cuestionario de Motivación para el Trabajo (CMT). Los resultados fueron analizados mediante estadísticos descriptivos ( X, Me, DT) e inferenciales (anova de un factor y t de student) para caracterizar las divergencias motivacionales por departamentos, áreas, tipos de contratación y géneros, en cada variable que compone la prueba. Se encontraron diferencias significativas entre afiliación y salario para los departamentos con un α = 0.0

Detection of interannual vegetation responses to climatic variability using AVIRIS data in a coastal savanna in California

11 pages, 10 figures.Ecosystem responses to interannual weather variability are large and superimposed over any long-term directional climatic responses making it difficult to assign causal relationships to vegetation change. Better understanding of ecosystem responses to interannual climatic variability is crucial to predicting long-term functioning and stability. Hyperspectral data have the potential to detect ecosystem responses that are undetected by broadband sensors and can be used to scale to coarser resolution global mapping sensors, e.g., advanced very high resolution radiometer (AVHRR) and MODIS. This research focused on detecting vegetation responses to interannual climate using the airborne visible-infrared imaging spectrometer (AVIRIS) data over a natural savanna in the Central Coast Range in California. Results of linear spectral mixture analysis and assessment of the model errors were compared for two AVIRIS images acquired in spring of a dry and a wet year. The results show that mean unmixed fractions for these vegetation types were not significantly different between years due to the high spatial variability within the landscape. However, significant community differences were found between years on a pixel basis, underlying the importance of site-specific analysis. Multitemporal hyperspectral coverage is necessary to understand vegetation dynamics.This work was supported in part by Foundation Barrie de la Maza, Spain, and NASA EOS Program Grant NAS5-31359.Peer reviewe

Análisis económico financiero de sociedades cooperativas y empresas del mismo sector en España: una comparación

El presente trabajo consiste en la realización de un análisis comparativo sobre los indicadores económico-financieros de las áreas de solvencia, estructura financiera, liquidez y rentabilidad de trece sociedades cooperativas españolas y la media de las empresas de su sector. De acuerdo con los resultados obtenidos, hemos comprobado como las sociedades cooperativas presentan mejores valores que la media de su sector en cada una de las áreas analizadas. Podemos afirmar que las sociedades que predican con los valores cooperativos, como la igualdad, la democracia y la primacía de los trabajadores sobre el beneficio económico, también pueden ser viables económicamente y obtener los mejores resultados financieros de sus respectivos sectores. Esto nos lleva a plantearnos que sería factible y beneficioso para toda la sociedad, un posible cambio en la forma de actuar de las empresas, tan preocupadas por la maximización de beneficios económicos como único objetivo, que consistiera en la aplicación de una economía más social y solidaria.Universidad de Sevilla. Doble Grado en Derecho, Finanzas y Contabilida

Review of Making Cinelandia: American Films and Mexican Film Culture before the Golden Age

Review of Making Cinelandia: American Films and Mexican Film Culture before the Golden Age. By Laura Isabel Serna. Durham, NC: Duke UP, 2014. 317 pp

Una posibilidad de (re)significar el currículo de matemáticas

Este artículo tiene como objetivo presentar las reflexiones de corte teórico y metodológico, que se tejieron alrededor de la (re) significación del currículo de matemáticas del grado quinto, de la I. E. Ciudadela Las Américas. El cuerpo de esta experiencia pedagógica está basado en el reconocimiento y vinculación de los saberes cotidianos de los estudiantes y padres de familia, en los procesos de enseñanza y en los procesos de aprendizaje de las matemáticas. Estos saberes cotidianos fueron constituyentes de los proyectos de aula, desarrollados en la clase de matemáticas, los cuales posibilitaron las interrelaciones entre los estudiantes y el conocimiento matemático, posibilitando así la (re) constitución de sujetos políticos

Papel de los seguidores en el desarrollo de las teorías de liderazgo organizacional

The most reviews about leadership have focused on the leader and his role in the organization. Modern research shows that the followers, as an important element of leadership, have an active role in the selection of leadership style and theory from which you evaluate a leader. From this point, the aim of this article is to identify what has been the role of followers in the development of theories of organizational leadership. In assessing the role of the follower in the development of theories of leadership, it was concluded that according to their perception, their behavior and their needs require a certain category of leader, which can be seen from each theory. La mayoría de revisiones acerca del liderazgo se han enfocado en el líder y su papel dentro de la organización. Las investigaciones actuales demuestran que los seguidores, como un elemento importante del liderazgo, poseen un papel activo en la selección del estilo de liderazgo y en la teoría desde la cual se le evaluará a un líder. Desde este punto, el objetivo de este artículo es identificar cuál ha sido el papel de los seguidores en el desarrollo de las teorías del liderazgo organizacional. Al evaluar el papel que tiene el seguidor dentro del desarrollo de las teorías del liderazgo se pudo concluir que de acuerdo con su percepción, su comportamiento y sus necesidades, exige cierta categoría de líder, que puede ser vista desde cada teoría

“Their Time, Their Moment, Their City”: A Critique and Black Feminist Reading of Harlem

This article analyses Tracy Oliver’s comedy series Harlem (2021) through the lens of Black Feminism. Invoking combined traces of Living Single (1993-1998) and Sex and the City (1998-2004), I contend Harlem aims to fill in the representation void that has erased Black women from mainstream comedies that are reduced to the white experience as it also aims to transgress the stigmatizing image of Black women in mainstream popular culture. In this manner, Oliver’s Harlem addresses several aspects of the Black female experience and shows the gendered racism Black women endure, such as racial stereotypes, medical mistreatment, or white women’s tears, among many others, prioritizing social accuracy and racial sensibilities through comedy as it follows the lives of four Black women in the neighborhood of Harlem in the twenty-first century