Aplicación de una metodología multicriterio para el diseño de rutas eficientes en una distribuidora de alimentos en Suba

Alternativa InvestigaciónLas necesidad de optimizar los recursos de las organizaciones en la actualidad ha llevado la competitividad a niveles de exigencia y efectividad sin margen de error, en este trabajo se aplicará una metodología multicriterio en la que se evaluara distancias, tiempos de recorrido, eficiencia en el recurso del transporte de la empresa, recolectando información de la situación, con estudios y variables que nos permitan aumentar el la utilidad y desempeño actual de la empresa, proponiendo mejoras con estudios y pruebas piloto en la empresa, obteniendo información que será el apoyo para una retroalimentación de los resultados antes y después del estudio realizado.PregradoIngeniero Industria

Impacto del uso de objetos de aprendizaje en el desempeño en matemáticas de estudiantes de grado noveno

Este artículo presenta algunos de los resultados de un estudio comparativo que buscaba determinar el impacto de los Objetos de Aprendizaje (OA) en el desempeño académico, en términos del rendimiento (calificación) en diferentes test con estudiantes de grado noveno. Las muestras corresponden a estudiantes de dos instituciones educativas ubicadas en el municipio de Medellín y en el municipio de Duitama. En la primera muestra se intervino la clase de matemáticas con OA y en la segunda no hubo intervención. Los resultados de los test se analizaron de manera cuantitativa y mostraron que las tecnologías en sí mismas y el uso de ellas por parte de los docentes, no generan una mejora significativa en el aprendizaje de las matemáticas que se vea reflejada en el desempeño académico de los estudiantes si no existe la un acompañamiento permanente y un proceso de cambio en sus prácticas docentes

Sizing and Eddy currents in magnetic core nanoparticles: An optical extinction approach

Optical extinction is a handy and ubiquitous technique that allows us to study colloidal nanoparticles in their native state. The typical analysis of the extinction spectrum can be extended in order to obtain structural information of the sample such as the size distribution of the cores and the thickness of the coating layers. In this work the extinction spectra of Fe3O4, Fe3O4@Au, and Fe3O4@SiO2@Au single and multilayer nanoparticles are obtained by solving full Mie theory with a frequency dependent susceptibility derived from the Gilbert equation and considering the effect of Eddy currents. The results are compared with non-magnetic Mie theory, magnetic dipolar approximation and magnetic Mie theory without Eddy currents. The particle size-wavelength ranges of validity of these different approaches are explored and novel results are obtained for Eddy current effects in optical extinction. These results are used to obtain particle size and shell thickness information from the experimental extinction spectra of Fe3O4 and Fe3O4@Au nanoparticles in good agreement with TEM results, and to predict the plasmon peak parameters for Fe3O4@SiO2@Au three layer nanoparticles.Fil: Mendoza Herrera, Luis Joaquin. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; ArgentinaFil: Bruvera, Ignacio Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; ArgentinaFil: Scaffardi, Lucia Beatriz. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; ArgentinaFil: Schinca, Daniel Carlos. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Ópticas. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Centro de Investigaciones Ópticas. Universidad Nacional de La Plata. Centro de Investigaciones Ópticas; Argentin

La lógica proposicional y su aplicación en contexto

Los alumnos, cuando abordan en sus cursos de matemáticas el tema de la lógica proposicional, manifiestan un alto grado de desmotivación, debido a la manera como este se les presenta. Su enseñanza se centra en encontrar el valor de verdad de las proposiciones y demostrar sus propiedades mediante el uso de tablas de verdad, olvidando, en la mayoría de los casos, la importancia de aplicar dichos conceptos y propiedades a situaciones reales, lo que daría sentido a lo que aprenden, pues además de desarrollarles el pensamiento formal, les permitiría adquirir un aprendizaje significativo. De esta manera, lo que se pretende con este trabajo es presentar algunos ejemplos en contextos reales, donde se apliquen ciertos conceptos y propiedades de la lógica proposicional, que sirvan como motivación para el trabajo en el aula tanto para docentes como para estudiantes, como una manera de ayudar a estos últimos a desarrollar el pensamiento formal y a adquirir un aprendizaje significativo de esta área del saber. Se presentan los distintos conectivos lógicos (negación, conjunción, disyunción, condicional y bicondicional), se muestran algunos referentes teóricos y se dan algunos ejemplos en contexto

Towards Sustainable Mobility through a Change in Values. Evidence in 12 European Countries.

The research carried out, as well as the measures taken to promote the use of sustainable transport in our cities, do not fully achieve their purpose. TheWertraitionalirat concept introduced by Max Weber in 1922 stated: “The use of public transport arises more from a system of values with which the person identifies than from the quality of the transport o ered”. This assertion made at the beginning of the 20th century is still valid, where the means, infrastructure and advances achieved do not obtain a proportional response from citizens. The aim of this work is, through this approach, to find variables that complement research on urban mobility habits. For this purpose, data from the International Social Survey Program (ISSP) and the European Social Survey (ESS) are used to analyse postmodern values and citizens’ environmental awareness, linking these to sustainable mobility habits in 12 European countries. The results suggest that a higher index of postmodern values implies greater environmental awareness, which would lead to a greater use of sustainable transport, although there are variables related to environmental knowledge and risk which indicate that greater environmental education and awareness is needed.Partial funding for open access charge: Universidad de Málag

Family Firms and Sustainability. A Longitudinal Analysis.

Two-thirds of the world’s private companies are family owned. It is an organizational model that, despite the arrival of large corporations, remains and is still totally in place. The survival of these organizations is not easy, and is conditioned by multiple factors. The research that addresses the sustainability of family businesses is numerous and has been conducted from multiple disciplines. This document investigates the trends in scientific production related to family businesses and their sustainability, using bibliometric techniques and SciMAT software. Atotal of 286 articles were analysed between 2003 and 2019 from the journals indexed in theWeb of Science (WoS). The results suggest that, although there is a growing interest in the study of the sustainability of family businesses, there is instability in the centrality of the topics, which denotes the existence of a wide margin of development. The most influential and trend-setting themes emerge mainly concentrated in three lines: those that analyse factors that drive sustainability, such as socio-emotional wealth and stakeholders; those interested in knowing about methods or practices that favour sustainability, such as CSR, performance, management or innovation; and those that investigate factors that endanger survival, mainly intergenerational succession processes. The contribution of this work is that, through bibliometric techniques, it sheds light on the groups of topics that condition the sustainability of family businesses, which will help the scientific community in the orientation of future work in this field of researchUniversidad de Málag

Research Trends in Open Innovation and the Role of the University.

Innovation is a key aspect for the sustainability and competitiveness of organisations, and of the economy in general. In recent years, Open Innovation (OI) has burst onto the scene as a more open approach, in which the sources and exchange of knowledge are extended beyond organisational borders. One of the main actors and providers of knowledge is the University. The literature related to OI and the University is very prolific, but at the same time dispersed. This paper aims to expand on the trend in research on OI and University. To do this, bibliometric techniques have been used to analyse a sample of 349 articles from journals indexed in the Web of Science (WoS) between 2005 and 2020. The results suggest that there is a high level of interest in research on this subject and that it is in full swing. The focus of the research is on topics such as collaboration, business–industry, R&D, networks, performance or knowledge-transfer. Emerging themes such as knowledge-spillover or absorptive-capacity appear, which are related to the research sensitivity on the true use of the knowledge generated. In recent years, there has been a trend towards research into entrepreneurship, key aspects of R&D such as strategy and cooperation, or education management. With regard to research related to University–Enterprise cooperation, the focus has been on SMEs, Helix models, entrepreneurship, or commercialisation. Finally, there are areas of research that require greater development related to family businesses and SMEs. This work sheds light on the state of the literature related to OI and University and is very useful for the orientation of future work in the field of research

The Organizational Commitment in the Company and Its Relationship With the Psychological Contract

Business organizations in their work environment, aspire to create a high level of performance and low levels of absenteeism and turnover. Organizational commitment is considered a key factor in achieving this objective, however, it can be conditioned by several factors, among which is the psychological contract. The literature has related the organizational commitment with the fulfillment of the psychological contract framing it as one of the explanatory variables. This work aims to investigate research trends on psychological contract and organizational commitment. For this purpose, bibliometric techniques and the software SciMAT have been used. 220 journal articles indexed in Web of Science (WoS) were analyzed. The findings indicate that the theme chosen for this review is valid. Based on the relationship between the two concepts, as the most recurrent themes, issues such as the sense of justice and the consequences of the violation of the psychological contract, normative commitment, HR management or job insecurity are addressed. However, in the last period analyzed (2015–2018), publications related to more sensitive topics to the present time emerge, such as the employability or the impact of these two concepts in the new generations (millennial and generation-Y) or the retention of talent. On the other hand, shortcomings are detected in the research on the ideologically charged psychological contract, the analysis of the organizational context or cultural and demographic factors in relation to both theoretical constructs. The contribution of this work lies in giving visibility to scientific results, which will serve business organizations as instruments for decision making in their labor management and, for the scientific community, as knowledge of the research spaces to exploreUniversidad de Málag

Corporate Social Responsibility and Human Resource Management: Towards Sustainable Business Organizations.

Today’s organizations are immersed in a global market, where any detail can provide a competitive advantage over rival companies and condition their sustainability. Corporate Social Responsibility and Human Resource Management have become very powerful tools within companies. However, the potential, development, and measurement of Corporate Social Responsibility (CSR) and Human Resource Management (HRM) have not been sufficiently explored. The literature has developed multiple case studies on CSR and HRM and has studied the combination of both factors and their link to economic, environmental, and social sustainability, but has not yet found a solid basis from which to address the new functionality of CSR, HRM, and sustainable business management. This work aims to investigate trends in scientific production related to Corporate Social Responsibility and Human Resource Management. Bibliometric techniques and SciMAT software have been used for this purpose. A total of 314 articles from Web of Science (WOS) indexed journals were analyzed. The results obtained confirm that the interest in the study of these concepts has grown exponentially in the last decade. It should be noted that the definitions of CSR and HRM, and even the relationship between the two, continue to be subject to multiple interpretations. The contribution of this work lies in the fact that, through the longitudinal analysis carried out, light is shed on the groups of issues that emerge with special projection, such as green-management, stakeholders, commitment, competitive-advantage, satisfaction, performance, sustainability, or research-methods-analysis, and which must continue to be explored in order to respond to the demands that business organizations have in this respect, and to help the total integration of the different approaches related to CSR and HRM.Universidad de Málag

La utilización de videos y preguntas como estrategia para la enseñanza del cálculo

Los videos se han consolidado como un recurso de gran acogida entre los estudiantes para su trabajo independiente en los cursos de Matemáticas y Cálculo en los primeros semestres de educación superior. Como precedente puede mencionarse el caso de Khan Academy. Por otro lado, los Objetos Interactivos de Aprendizaje (OIA) también son un recurso que no debe ignorarse en la búsqueda de una mejor enseñanza por el docente y un mejor aprendizaje para el estudiante. Ahora se propone utilizar estos dos recursos en forma simultánea como un complemento el uno del otro buscando aprovechar las ventajas de ambos. Esta convergencia de ambos recursos es una propuesta que busca prevenir que el contenido ininterrumpido en el video llegue a ser tedioso para el estudiante. A la vez, busca que se aprovechen las pausas con preguntas oportunas para lograr que el estudiante vaya retroalimentando durante la reproducción misma del video y no solo al final, que es lo común