Park K.C.,KAIST |
Park K.C.,University of Colorado at Boulder |
Ohayon R.,French National Conservatory of Arts and Crafts |
Felippa C.A.,University of Colorado at Boulder |
Gonzalez J.A.,University of Design of Costa Rica
Computer Methods in Applied Mechanics and Engineering | Year: 2010
This paper presents a partitioned modeling of internal and gravity fluid waves that interact with flexible structures. The governing interaction model consists of three completely partitioned entities: fluid model, structural model, and interface model that acts as an internal constraint on the fluid-structure interface boundary. Thus, the proposed partitioned multi-physics modeling can employ two completely modular fluid and structure software modules plus an interface solver, hence amenable to partitioned solution algorithms. The interface discretization can exploit the nonmatching interface algorithm previously developed via the method of localized Lagrange multipliers. Also noted is that the present fluid model can make use of widely available finite element software for standard Poisson-type problems. © 2009 Elsevier B.V.
Cartes I.,University of Design of Costa Rica
Revista 180 | Year: 2012
The changes the territory and the landscape have been through after the tsunami on February 27, 2010 have been quite significant: some urban nucleuses were practically "wiped out" by the hydrodynamic power of the water, others managed to survive because of various geographical accidents or construction-related factors. Leaving those places based in the Chilean coast and which are under a clear risk of tsunami results in an unthinkable possibility given that many cities in the country are built on the coastal region and their social economic development is articulated by their marine context. Nevertheless, 50 years have passed since the 1960 Valdivia earthquake and tsunami took place- the most powerful ever recorded rating 9.5 in Richter magnitude scale- to carry out a regular soil type use assessment on the basis of earthquake risk. Even though government policies have not resulted to be very effective to face one of the most destructive natural disasters, it is of paramount importance to assure the human capital, build mitigation barriers, set up resilient communities, implement education programmes and evacuation plans as well as suggest platforms of future development. The aforementioned, all together, constitutes some of the main premises to assure quality life in a wide part of our country. This approach will undoubtedly change the way the coastline is inhabited and generate new perceptions and suggestions for a society still living a post-disaster mourning to be significantly integrated from the reconstruction process to a comprehensive recuperation in which social capital will continue to be the leading participant.
Romero L.,University of Design of Costa Rica |
Dominguez I.A.,University of Design of Costa Rica |
Del Mar Espinosa M.,University of Design of Costa Rica |
Dominguez M.,University of Design of Costa Rica
International Journal of Engineering Education | Year: 2015
This article explains the results of more than three years working in collaborative engineering learning development, at the master's degree level, in the school of industrial engineers of the UNED, distance university of Spain. The fundamental approach is based on the "distance methodology" and "continuous evaluation" of the students' work and periodic reviews. The need for a teamwork aptitude is assumed an implicit requirement and, therefore, there is a specific methodology for the project. The work is supported by data and statistics that show better results than those obtained in other subjects of the same master's where the teamwork option is not applied, or in other master's and degree subjects in the engineering field or other technical areas. The result is success in the response and participation of the students and a new methodology that could be transferred to other subjects that do not have a specific teamwork requirement, but could use this methodology to improve the results. © 2015 TEMPUS Publications.
Heard C.,University of Design of Costa Rica
Applied Thermal Engineering | Year: 2014
Traditional dwellings in the wooded hills and mountains in the vicinity of Mexico City are wooden cabins with very little thermal insulation. A modest change in the internal roof construction was trialed in order to improve thermal comfort. Modelling showed a modest improvement in thermal comfort could be expected. The experimental cabin was used as a show house and community members were invited to stay overnight and subsequently surveyed to obtain their appreciation of the experience. Community surveys to find out attitudes to environmental issues were also carried out and the potential acceptance of the improved cabin design. © 2014 Elsevier Ltd.
Housing projects in the metropolitan concepcion area. Institutionalization of the Modern City, 1939-1973 [Conjuntos habitacionales en el área metropolitana de concepción institucionalización de la Ciudad Moderna, 1939-1973]
Fuentes P.,University of Design of Costa Rica
Revista 180 | Year: 2012
This work covers the developmental rise and fall period. It ranges from 1939, the year of the earthquake and propagation of modern movement in the south of the country, and 1973, when the political crash finished off the housing strategies of the democratic State. The area, strategic for domestic production, allowed numerous projects under the charge of a variety of entities: some, agencies of the State; others, belonging to the regional industry. All of them involved basic essentials corresponding to a collective and contemporary form of housing. Its features indicate the appropriation of the rationalist vicissitudes. They reveal the modernization of popular domain cloaked by the functional and political utopia of the developmental environment that made up part of the urban image of this land. The leaving of this mark had nuances of decisions taken locally, the physical, geographical and territorial surroundings, all actors that imposed determining facts on the construction of the projects. Three factors: the State and its social welfare inspiration, the industrialists and their impulse to be a Good-Samaritan, and the architectural factors with their mission to modernize, all bring together form, the people and the land. This interconnection sustains the identifying relationship of local modernity.
Vila C.,Jaume I University |
Abellan-Nebot J.V.,Jaume I University |
Albinana J.C.,Jaume I University |
Hernandez G.,University of Design of Costa Rica
Procedia Engineering | Year: 2015
Sustainable development has been, is and will be one of the worldwide main issues. Many initiatives have been launched to drive global conscientiousness to the problem of the impact of manufactured products. In order to become a "green company", eco-brands and recycling are well understood but many initiatives are in silos and the unintended wasteful impact to other activities in the company is not always noticed. The key of sustainability also covers all the in-between activities and it depends on a real commitment of society, research and manufacturing firms. The factory of the future must have a Green Product Lifecycle Management strategy sharing responsibilities within the whole supply chain that must be achieved through committed people. The present work describes an approach to green product lifecycle involving mainstay phases: design, manufacturing and service, including usability and renewal. The contribution suggests a framework for sustainable product development that takes the whole product lifecycle into account. © 2015 Published by Elsevier Ltd.
Bruscato U.M.,Federal University of Rio Grande do Sul |
Alvarado R.G.,University of Design of Costa Rica
Revista 180 | Year: 2011
Pezo-Von Ellrichausen's last project which exhibited in Concepcion (in the south of Chile) seems to recover a myth from modernity: The house of glass. This team of architects noted by their austere and monolithic houses has erected a narrow three-storey glass house upon the slopes of the city. By presenting the structure which underlines the stability after the devastating earthquake which hit the region in 2010; it depicts daily events and environmental struggle of residential life as well. It also evokes the daring transparent residences of modernism, but in the present energetic and urban context which questions the relevant architectonic premises.
Productivity gains in a line flow precast concrete process after a basic stability effort [Mejorias en la Productividad de un Proceso de Prefabricados de Concreto con Flujo en Linea Despues de un Esfuerzo de Estabilidad Basica]
Gallardo C.A.S.,Laboratorio Of Investigacion Of Administracion Of Construccion Lagercon |
Granja A.D.,University of Design of Costa Rica |
Picchi F.A.,Lean Institute Brazil
Journal of Construction Engineering and Management | Year: 2014
Lean principles and methods have been successfully applied to precast concrete job shops and batch flows. The conversion of processes from batch flow environments to line flow environments is the main reason for the productivity gains that have been reported in the literature. By means of an action-research approach rooted in the philosophy of lean thinking, the authors show that further productivity gains are possible for precast concrete fabrication processes already running in line flow. This study took place at a company that had previously implemented lean measures, such as value stream mapping (VSM), workplace organization (5S Method), pull systems, and total productive maintenance (TPM). This earlier initiative provided productivity gains, although in a variable and unsustained way. The research approach could devise a simple stability process with a focus on method and manpower. After a series of improvement cycles, the production process achieved almost complete stability and obtained an additional productivity gain of 24%. These results suggest that neglecting stability issues in lean implementations means wasting part of the potential gains, in addition to risking the loss of previously obtained gains, even in environments apparently optimized for line flow. © 2013 American Society of Civil Engineers.
PubMed | University of Design of Costa Rica, University of Skövde and Albanova University Center
Type: | Journal: Carbohydrate polymers | Year: 2014
The potential of lignocellulosic natural fibres as renewable resources for thermal conversion and material reinforcement is largely dependent on the correlation between their chemical composition, crystalline structure and thermal decomposition properties. Significant differences were observed in the chemical composition of cotton, flax, hemp, kenaf and jute natural fibres in terms of cellulose, hemicellulose and lignin content, which influence their morphology, thermal properties and pyrolysis product distribution. A suitable methodology to study the kinetics of the thermal decomposition process of lignocellulosic fibres is proposed combining different models (Friedman, Flynn-Wall-Ozawa, Criado and Coats-Redfern). Cellulose pyrolysis can be modelled with similar kinetic parameters for all the natural fibres whereas the kinetic parameters for hemicellulose pyrolysis show intrinsic differences that can be assigned to the heterogeneous hemicellulose sugar composition in each natural fibre. This study provides the ground to critically select the most promising fibres to be used either for biofuel or material applications.
PubMed | University of Design of Costa Rica
Type: Journal Article | Journal: Historia, ciencias, saude--Manguinhos | Year: 2015
The early twentieth century saw the rise of vacation camps for frail children as educational and health-giving experiences provided by medical and philanthropic organizations. This article analyzes some of these early experiences, seen here as the predecessors of social tourism, in the Province of Buenos Aires. A combination of written sources are examined, mainly institutional reports, periodicals such as the Monitor de la Educacin Comn - published by the Consejo Nacional de Educacin (National Board of Education) - or laws, with photographs and plans for different examples. I argue that these buildings were both physical and cultural brands in the places where they were located, and that their architectural structure encapsulated ideas about leisure space and cures in unique natural environments.