Examinando por Materia "Ecology"
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Ítem Conditions for the promotion and development of creative industries within higher education institutions(The Design Society, 2015-01-01) Hernandez, M.C.; Podesta, M.P.; Bedoya, B.E.Higher Education Institutions (HEIs) play an important role on the promotion and development of creative industries (e.g. product design companies). These roles, however, are not clearly defined. Previous studies by the authors, conducted in Colombia, encountered several critical internal factors as well as environmental relationships proper of the ecosystem of business that affect performance in creative industries. HEIs can promote specific activities to become agents that enhance the development of these creative industries, thus contributing to overcome environmental and critical internal factors. This paper presents a model that can serve as a starting point within HEIs to establish policies towards this goal. For such purpose, the present research extended the aforementioned studies to Argentina and the United States, countries recognized worldwide for the development of "creative industries" or "creative economy". Fieldwork was performed in nine cities: two in Colombia, two in Argentina and five in the United States. Data was collected via interviews and focus group studies conducted at universities and creative industries, as well as with experts, government representatives and support organisations. A PESTEL analysis was used to identify weaknesses that could become opportunities for action within HEIs. The results allow for the establishment of nine key roles of the HEIs (i.e. education, moderator of the ecosystem, research, foster discussion, investment, on-going support, dynamism, joker, and simulation/real environment) that can be related to these institutions' substantive functions (i.e. teaching, research, extension, and support and integration), which contribute to enhance the development of creative industries, their growth and long-term sustainability. © 2015, The Design Society. All rights reserved.Ítem Conditions for the promotion and development of creative industries within higher education institutions(The Design Society, 2015-01-01) Hernandez, M.C.; Podesta, M.P.; Bedoya, B.E.; Universidad EAFIT. Departamento de Administración; Estudios en Mantenimiento (GEMI)Higher Education Institutions (HEIs) play an important role on the promotion and development of creative industries (e.g. product design companies). These roles, however, are not clearly defined. Previous studies by the authors, conducted in Colombia, encountered several critical internal factors as well as environmental relationships proper of the ecosystem of business that affect performance in creative industries. HEIs can promote specific activities to become agents that enhance the development of these creative industries, thus contributing to overcome environmental and critical internal factors. This paper presents a model that can serve as a starting point within HEIs to establish policies towards this goal. For such purpose, the present research extended the aforementioned studies to Argentina and the United States, countries recognized worldwide for the development of "creative industries" or "creative economy". Fieldwork was performed in nine cities: two in Colombia, two in Argentina and five in the United States. Data was collected via interviews and focus group studies conducted at universities and creative industries, as well as with experts, government representatives and support organisations. A PESTEL analysis was used to identify weaknesses that could become opportunities for action within HEIs. The results allow for the establishment of nine key roles of the HEIs (i.e. education, moderator of the ecosystem, research, foster discussion, investment, on-going support, dynamism, joker, and simulation/real environment) that can be related to these institutions' substantive functions (i.e. teaching, research, extension, and support and integration), which contribute to enhance the development of creative industries, their growth and long-term sustainability. © 2015, The Design Society. All rights reserved.Ítem Deep sea benthic foraminifera of the Panama basin: Ecology and their possible relation with deep sea currents(Instituto de Ivestigaciones Marinas y Costeras-INVEMAR, 2013-02-01) Patarroyo, German; Ignacio Martinez, J.; Universidad EAFIT. Departamento de Geología; Ciencias del MarDeep sea benthic foraminifera of the Panama basin: ecology and their possible relation with deep sea currents. The relationship between recent benthic foraminifera and bottom currents in the Panama basin (Colombian Pacific) is examined, and the main ecological variables which control the distribution of benthic foraminifera are discussed. The benthic foraminiferal study of 24 core top samples and the integration with previous reports, support the view that in upwelling areas or under high terrigenous influx, the assemblages are dominated by infaunal forms such as Uvigerina, Bolivina, Globobulimina, and Chilostomella, beside common forms such as Uvigerina peregrina Cushman and Epistominella spp., which are indicative of high productivity. In contrast, epifaunal forms such as Cibicidoides, Laticarinina, and Hoeglundina are more common on the flanks of the Cocos and CarnegieRidges indicating a lower surface productivity and a larger content of dissolved oxygen on the sea foor. Infaunal foraminifera are dominated by Siphouvigerina proboscidea (Schwager). In addition, several proxy taxa of the intensity of deep sea currents were detected in the analyzed assemblages. From these taxa, Cibicides wuellerstorf (Schwager) has the best proxy potential for the reconstruction of intense bottom currents in sediments from the Cocos and Carnegie Ridges for the Holocene.Ítem Distribution and environmental preferences of deep sea benthic foraminifera in the panama basin, eastern Pacific Ocean(INST CIENCIAS NATURALES, MUSEO HISTORIA NATURAL, 2013-01-01) Patarroyo Camargo, German David; Martinez Rodriguez, Jose Ignacio; Universidad EAFIT. Departamento de Geología; Ciencias del MarThe Recent benthic foraminiferal families Bolivinidae, Buliminidae and Uvigerinidae from 34 core top samples were studied in order to analyze their geographic distribution and possible environmental controls in the Panama Basin. A cluster analysis defined five assemblages based on the percentage abundance of 33 species. The Bolivinidae and Buliminidae have a homogeneous distribution along the basin, in comparison to the Uvigerinidae, which has its largest proportion over the western flank of the Cocos Ridge and over the north-western flank of the Carnegie Ridge. A canonical correspondence analysis (CCA) over 26 species suggests that the Bolivinidae and Buliminidae are related to bottom temperature, in comparison to the Uvigerinidae, which has a more complex relation with depth, salinity and dissolved O2 content.Ítem Influence of energy consumption on battery sizing of electric fluvial vessels: a Colombian Case Study(Institute of Electrical and Electronics Engineers Inc., 2020-09-12) Giraldo, E.; Gaviria, Gregorio; Betancur E.; Gómez, G.O.; Mejá-Gutiérrez, R.; Giraldo, E.; Gaviria, Gregorio; Betancur E.; Gómez, G.O.; Mejá-Gutiérrez, R.; Universidad EAFIT. Departamento de Ingeniería de Diseño; Ingeniería de Diseño (GRID)Electric vessels represent a sustainable solution for fluvial mobility. However, their energy demand is higher compared to terrestrial vehicles, so that, increasing the hydrodynamic efficiency is mandatory.Ítem Parameter estimation of a predator-prey model using a genetic algorithm(2010-01-01) Restrepo, J.G.; Sánchez, C.M.V.; Restrepo, J.G.; Sánchez, C.M.V.; Universidad EAFIT. Departamento de Ciencias; Modelado MatemáticoThis paper presents the parameter estimation of a biological system with real data extracted from literature, and different model structures: Lotka-Volterra model (basic predator-prey model) and saturation predator-prey model. A third model is proposed and tested in simulation due to lack of appropriated real data; it includes inputs that excite the system and makes the estimation process more manageable. The model parameters were estimated using a genetic algorithm, which gives a combination of parameters used in simulation to compare outputs with real data and decide, using a cost function, which parameters are better. Comparing the models, the Lotka-Volterra model provides better adjustment but with unrealistic assumptions, while saturation model represents a system with real assumptions but the fit is not very high. ©2010 IEEE.