Memorias en Eventos Académicos
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Item Metadata only An investigation and presentation of a model for factors influencing the agility of human resources a case study of Yazd Electricity Distribution Company to Springer proceedingsSalgado Reyes, Nelson EstebanAgility resembles the idea of speed and change through business environment. Agility focus on responding to dynamic and turbulent markets and customer’s demands. It is while the implications of agile competition dependent upon competitive contexts which are particularly active within an organization. The present study is an attempt to find out which factors are more influential on attaining agility with regard to human resources. The sample for this study includes the staff working in Yazd Electricity Distribution Company. Random sampling method was used in this study and the data were gathered through the use of a questionnaire (after examining its reliability and validity as an instrument of data collection). Furthermore, in order to investigate this issue, the fuzzy approach was used as one of the beneficial instruments for measuring those problems with vague indices. Structural Equation Modeling was also applied to experiment research hypotheses. The results of this study show that in order to face such changes, agility based on human resources’ knowledge, human resources’ skills, the existence of cooperative culture in the organization, and access to information is necessary. Besides, regarding the importance of agility of human resources for organizations, it is suggested to investigate other influential factors on agility in future research to contribute to the further development of the model presented within this research.Item Metadata only More than just a green facade: vertical gardens for sound absorption and architectural acousticsDavis Michael, Joseph Maks; Ramírez Cevallos, René FranciscoNoise can become uncomfortable for us in many situations both indoors and outdoors. External noise consists of activities (airplanes flying overhead, traffic on the road, etc.) that are either loud enough to be considered uncomfortable when outdoors, or are of an elevated volume to the extent that they infiltrate buildings at levels considered uncomfortable. In the case of internal uncomfortable noise, this can either stem from noisy activities that occur inside the building (people speaking loudly, printers, etc.), or when an unexpected sound suddenly permeates an area that has a very low level of background noise. The most common manner by which to mitigate excess noise is through the use of certain materials, which either insulate against noise passing through the material, or absorb the noise wavelengths. In the case of the latter, vertical gardens present themselves as not only an aesthetic element in architecture, but also as a potential acoustic control tool in building design. For this work 10 m 2 of vertical garden substrate modules was tested in a full size reverberation chamber. The objective was to open the doors for vertical gardens to be used in architectural acoustic design.Item Metadata only To evaluate the sustainability of urban planning projects through an LCA approach: example of application of the NEST tool and requirements for its use in the context of Ecuador and Latin AmericaYépez Madruñero, Grace JeannethUrban planners are facing a growing demand for high performance projects in terms of control and reduction of environmental impacts. However, the complex and multidimensional concept of sustainable urban development often loses its core substance when confronted to practice realities of urban projects because of a lack of adapted decision support tools. The question arises as to how the effective consideration of the environment and the limitation of the project impacts can be taken into account as soon as the early design stages? As an answer to this question, we developed NEST (Neighborhood Evaluation for Sustainable Territories), a life cycle assessment (LCA) tool for the built environment at the neighborhood scale. LCA has been increasingly used to assess the environmental impacts of construction products and buildings during the last 25 years. And today, a new trend stems in the application of LCA to larger systems such as urban islets or neighborhoods. NEST addresses early design stages, and uses 3D models of neighborhood projects to quantitatively assess a set of environmental impacts. In this paper we propose a presentation of the tool, and an application through the case study of a new development project for a peri-urban area. Moreover we analyze the opportunity and the requirements for the adaptation of the tool, initially developed in Europe, under the context of Latin America, whether it is for the availability of data and for the coherence with specific challenges and political objectives in the area of South America.Item Metadata only Frequency reconfigurable antenna using double phase-shifted feedChafla Altamirano, Juan Francisco; Nicolalde Rodríguez, Damián AníbalThis paper discusses a novel antenna concept for frequency reconfiguration by means of a simulation of a patch antenna simultaneously fed by two equal-amplitude signals. The frequency reconfiguration occurs by controlling the feeding phase leading to two operation frequencies: f = 850 MHz and f = 1.7 GHz. Numerical simulation results show precise resonances points and similar radiation patterns for both operation frequencies.Item Metadata only The potential for green roofs in sustainable urban drainage systemsDavis Michael, Joseph MaksUrban environments tend to lack the capacity to absorb water from precipitation. This is due to vegetated surfaces being replaced by impermeable ones, such as concrete, bitumen or similar. As a result problems can occur, where a period of heavy rainfall coincides with sudden increases in surface water runoff. This in turn can lead to a city’s sewerage system becoming overloaded. Sustainable Urban Drainage Systems (SUDS), are recognized worldwide as a successful manner by which to mitigate this phenomenon. One of the principal components of SUDS are permeable areas in an urban setting, which have the ability to absorb and retain rainfall that would otherwise flow as surface runoff. To date there has been little research into what the effect of a massive increase in green roofs would have for cities in Ecuador. As a developing country, it is not uncommon for cities’ sewerage systems to suffer collapse when faced with sudden rainfall peak loads. It is suggested in this paper, that instead of looking to implement costly sewerage expansion programs, it would be more cost effective to implement city scale green roof systems. The paper sets out to quantify the theoretical effect of such an initiativeItem Open Access 
Item Metadata only Predicting academic performance of university students from multi-sources data in blended learningChango Sailema, Wilson GustavoIn this paper, we propose to predict academic performance of university students from multi-sources data in multimodal and blended learning environments using data fusion and data mining. We have gathered data from 65 university students and different variables from four different sources. Firstly, we apply data fusion and preprocessing for creating a summary dataset in numerical and categorical format. Then, we have applied different white box classification algorithms provided by Weka data mining tool in order to select the best algorithm. Finally, we show the best predicting model in order to help instructor to take remedial actions with students at risk of dropout or failing.Item Metadata only Specialized design architectural objects for the rehabilitation of people with visual disabilitiesVillacís Tapia, Enrique VinicioIn the city of Quito, the number of people with disabilities is high and approximately12% are visually impaired. Centers dedicated to the rehabilitation are available, one of which is the Atahualpa Day Center (CDA). Although the center has trained personnel,and a set program, the facility was not designed for this purpose, it is an adapted space that tries to cover the needs of the staff and the participants generating gaps which have had to be solved in an improvised manner. The Con Lo Que Hay -With what isavailable-11 (CLQH 11) workshop, identified several spatial needs of the CDA and utilizing a specialized space-object sought to solve the necessity of the step by step methodology process to enable visually impaired individuals into daily life. This means that the skills developed within a controlled space are put into practice in spaces like the city allowing them to acquire the confidence to function autonomously. This study evaluates the pertinence and importance of a space-object specifically designed to help the visually impaired population to reintegrate into daily life. This topic is important within the Ecuadorian context because all the efforts and investments usually are focused on generic buildings and basic services.Item Metadata only The value of the invaluable: the challenge of making a scientific collection visible through its economic estimationBurneo Núñez, Santiago Fernando; Camacho Monge, María Alejandra; Salgado Molina, Jorge AndrésThis year’s conference theme is “Making the Case for Natural History Collections”. As more effort and resources are spent on digitizing collections and making them available to an ever expanding audience we feel it becomes more and more important to explain what museum collections are, how we preserve them, and most importantly why we have these collections and why they matter. New to this meeting is a session called Specimen Spotlight. This is a chance for everyone to highlight one specimen in their collection and explain why that specimen is special and what makes it important. My hope is that these short, five-minute, one-slide presentations will allow everyone to participate at the meeting and when viewed as a group these spotlights will demonstrate the diversity, importance, and greatness of museum collections that we, as collection workers, already understand.Item Metadata only Preserving traditional construction techniques and materials as an answer to future energy-fuel crisisVillacís Tapia, Enrique VinicioOnce a highly skilled and experienced professor told us: the future of architecture is in its handcraft past. We were not able to completely understand him at that time. Looking forward to the future where architecture and engineering professionals will perform facing energy fuel crisis and global warming, an endogenous approach, working with what is available, maybe a subsistence tool. Preserving and further development of traditional construction materials, methods and techniques now hasbecome a must, not form the cultural heritage stand point but as a survival instrument. In this paper we will analyze three different roofing systems, two of them ancestral techniques; toquilla leaf roof and straw thatch roofs, using them in real contemporary construction circumstances by incorporating them into the professional life through real construction projects and the educational system through Con lo que hay, a design-build class room in architectural school in Ecuador, facing them with conventional zinc metal roofing. This study will show the impact of recovering these techniques and materials within the academic, the professional, scientific development and on the local economies.