Browsing by Author "DIUC"

Now showing 1 - 20 of 167

Adquisición y análisis de señales cerebrales utilizando el dispositivo MindWave
(Universidad de Cuenca, 2014) Torres, Felipe; Sánchez, Christian; Palacio Baus, Kenneth Samuel; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
Brain activity can be monitored through electroencephalography and used as a bioelectric indicator. This paper shows how a low cost device can be used in developing brain-computer interface based applications. The obtained results show that the MindWave device can be used for EEG signal acquisition, and that the Wavelet transform can be employed to improve the signal representation in order to apply artificial intelligence algorithms and pattern recognition techniques to classify brain responses.
Alteraciones de la calidad y cantidad de la produccion de leche en presencia de map a traves de ELISA PPA
(Universidad de Cuenca, 2015) Villamar Manrique, S. A.; Jaurena, G.; Mundo, S. L.; Gillardoni, L. R.; Fortuni, M. L.; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
An analysis of the relationship between higher education performance and socio-economic and technological indicators: the Latin American case study
(Universidad de Cuenca, 2013-12) Feyen, Jan; Hoof, Hubert B. Van; Universidad de Cuenca; DIUC; Dirección de Investigación de la Universidad de Cuenca
This paper reports on a study that analyzed the research output of higher education systems in a select number of Latin American countries and its relationship to several socio-economic and technological success indicators. This was placed within a broader discussion of the changing role of the university in society. The study used the rankings of the countries surveyed with respect to two major indicators: 1. higher education and training (Global Competiveness Report 2012-2013) and 2. scientific productivity of higher education institutions (HEI) as measured by the number of research papers published in international, peer reviewed journals as archived in the Scopus Database (Elsevier B.V.) and available in the SIR Iberoamericano Ranking Reports 2009-2013. The relationship of both indicators with various socio-economic and technology indicators was examined to assess the extent to which the quality and scientific productivity of a country’s higher education system affected a number of country performance indices such as global competitiveness, innovation, health and primary education, government effectiveness, knowledge and technology output and GDP per capita. The relationship between scientific productivity in the form of published, refereed papers and a country’s investment in R&D, researcher headcount per million inhabitants and the quality of its research institutes was analyzed as well. The findings at the Latin American level were compared to the research effectiveness of higher education institutes at the global level. The study found that, notwithstanding the huge variation that existed between the countries studied in the survey, the education and training country rank and the country average HEI publication record correlates with several important socio-economic indicators. Although improvements have been made many Latin American countries still trail their global counterparts in the area of research and publication.
An information system for heritage documentation management of Cuenca city, Ecuador
(Universidad de Cuenca, 2012-06) Heras B., Verónica; Steenberghen, Thérese; Zúñiga López, Marcelo; Cardoso Martínez, Fausto; Santana Q., Mario; Van Balen, Koenraad; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
The understanding and safeguarding of Cultural Heritage involves the collection, storage and processing of all forms of relevant information pertaining to it. Whereas the heterogeneous sets of data help understanding the heritage monument or site; heritage data management is an essential task for the use, dissemination, protection and conservation of the monuments. Compiling heritage monument records is still mostly a manual procedure, while computer technology partially solved data organization and archiving of individual components. Additionally, a main bottle neck for the archiving of heritage information of sites belonging to the World Heritage List is that information is collected and archived by a variety of institutions and that each archiving organization has its own protocol and tradition of data storage and dissemination. To integrate the dispersed available information, which would facilitate the retrieval of information and making the information available for decision-making, this paper presents a concept of Heritage Information System (HIS) based on: (i) value-based assessment at different scales, (ii) a heritage (geo) database, and (iii) a geographic information system (GIS). For the development of the concept heritage data of the historic city of Cuenca (World Heritage Site, 1999), Ecuador, were used.
Análisis de rendimiento y profiling del modelo WRF en un clúster HPC
(Universidad de Cuenca, 2014) Gualán S., Ronald M.; Solano-Quinde, Lizandro D.; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
The Weather Research and Forecast (WRF) model is a fully functional modeling system that supports atmospheric research and weather prediction. WRF was developed with emphasis on efficiency, portability, maintainability, scalability and productivity, allowing it to be successfully implemented in a wide variety of HPC equipment. Therefore, the size of the problems supported by WRF has increased, so the understanding of the WRF’s dependence on the various elements of the cluster, such as CPU, networking and libraries are crucial to enable efficient forecasting and high productivity. In this context, this manuscript examines WRF scalability in HPC equipment, taking into account three parameters: number of CPUs and nodes, communications and libraries. Two benchmarks carried out on a cluster of high performance provided with a GigaEthernet network, allow to establish the relationship between scalability and the three parameters studied, particularly WRF demonstrates sensitivity to inter-node communication. This factor is essential for maintaining the scalability and increasing productivity by adding nodes to the cluster.
Análisis histórico constructivo de la iglesia de Santo Domingo de Guzmán (Pajarejos, Segovia) por medio del análisis estratigráfico constructivo
(Universidad de Cuenca, 2015-06) Aguirre Ullauri, María del Cisne; Alvarez G., Alvaro J.; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
The article illustrates the potential of stratigraphic analysis, an archaeological method reading the information contained on surfaces, enabling the acquisition of knowledge and the documentation of architectural heritage. The vicissitudes of the method permit to reconstruct the architectural stratification of heritage buildings, yielding more in-depth knowledge than what can be derived through historical and typological analysis. The approach involves the application of a logic and contextualized stratigraphic survey of the legible and tangible elements of the building, the primary source, enabling the reestablishment of the chronology of technical and constructive interventions that have led to the current appearance of the building. Consideration of this knowledge, prior to any new interference, will automatically result in a more rational and justified intervention in heritage assets. The detailed stratigraphic study of the Romanesque church of Santo Domingo de Guzmán (Castilla and León, Spain) has clearly demonstrated the virtues of the method, and this in the absence of previous studies and the limited availability of historical references. The study revealed the succession of thirteen specific and complementary phases of constructive campaigns between the twelfth century and today, previously architectonically not documented.
Análisis no lineal del pandeo de columnas esbeltas para cargas estáticas
(Universidad de Cuenca, 2014) Moscoso Fernández Salvador, Jorge Fernando; Alvarez Ruilova, Juan; Argudo Sánchez, Geovanny; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
The design of reinforced concrete structural elements has improved over the years due to better knowledge of the behavior of its comprising materials. Columns as structural elements are very important in the structure life span. This paper develops a method for testing and analyzing nonlinear slender rectangular reinforced concrete columns and concrete filled steel columns, whose aim is to calculate the geometric and mechanical guideline of a column to determine the maximum moment which can withstand an axial load due to either depletion or instability. The method comprises an iterative process in which the neutral fiber depth and the radius of curvature. Graphics solutions (Guideline geometric and mechanical) that indicate the status of the last column were obtained. The method is versatile as it can be used to analyze columns consisting of different types of materials incorporating only stress-strain diagram; also the method is optimal as to check if a certain combination of column load resists, is not necessary to construct the interaction diagram
Análisis preliminar de la fitotoxicidad del material particulado sedimentable de la zona urbana de Cuenca
(Universidad de Cuenca, 2015-06) García Alvear, Nancy Beatriz; Abad Terán, Mónica Eulalia; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
This paper reports on the phytotoxicity of Sedimentable Particulate Material (acronym in Spanish: MPS) in the urban area of Cuenca. MPS was collected at three sites in the city of Cuenca applying the method described in the Unified Text of Secondary Environmental Legislation of the Ministry of Environment (acronym in Spanish: TULASMA). The concentration of components in the sedimentable particulates was measured using gravimetric analysis, atomic absorption spectroscopy for heavy metals, and a method adopted from the EPA 300.1 reference for anions. The phytotoxicity of MPS was evaluated in bioassays measuring respectively the germination, and the root and hypocotyl elongation of seeds of the following plants: Lactuca sativa, Brassica oleracea italica, Allium cepa, and Raphanus sativus. In the bioassay seeds were exposed to different dilutions of the aqueous suspension of MPS. Results clearly revealed that the effect is concentration and species dependent, showing different levels of phytotoxicity.
Analyzing downloaded data from road side units
(Universidad de Cuenca, 2014) Astudillo S., Darwin; Barros G., Juan Gabriel; Chaput, Emmanuel; Beylot, André-Luc; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
In the context of vehicular networks a map updating application was analyzed, which enables vehicles to download relevant geographic data related to their position. Possible strategies for data sharing are the networks from infrastructure to a vehicle (I2V) and from vehicle to vehicle (V2V). In this study two chunking techniques, the Random Sort Strategy (RSS) and the Network Coding (NC), for the I2V network segment were compared. The study revealed that the distribution of different received chunks is independent of the file size when NC is used; when RSS is used the mean and standard deviation depend on the file size. The authors intend to integrate in a next step these results in the analysis of the V2V network segment.
Aplicación de SPEA2 al cálculo de esquemas de dosificación para el tratamiento quimioterapéutico del cáncer
(Universidad de Cuenca, 2014) Jordán Villamar, Carlos; Valderrama Saltos, Ismael; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
This paper presents the application of SPEA2 to calculate optimal dosage schemes for the chemotherapeutic treatments of tumors, where such schemes consists in the specification of several cytotoxic agents, its frequencies and doses to be administered. In this optimization problem, the calculated schedules should optimize more than one objective at the same time: not only tumor size but also the toxicity that remains after the treatment, cost, etc. SPEA2 is a genetic algorithm that applies the Pareto optimality criterion to calculate an approximation to the Pareto frontier, from which the user can choose the "best" or more appropriate solution. In this work a software tool was developed: SoT-Q. It has two main modules: an optimizer that calculates optimal dosage schemes and a simulator that applies these schedules to a simulated patient with a tumor; the functioning of the simulator is based on a pharmacodynamic model to represent the tumor. In the future, once SoT-Q is extensively tested and debugged, this computer program could assist oncologists in decision making about chemotherapy treatments; it could also serve as a teaching aid in training new health professionals. Results obtained using this tool were very good; in all test cases, both tumor size and residual toxicity at the end of treatment were reduced significantly; even more, in some examples the reduction was of three orders of magnitude.
BASES DEL X CONCURSO UNIVERSITARIO DE PROYECTOS DE INVESTIGACIÓN
(Universidad de Cuenca, 2011-03) Dirección de Investigación de la Universidad de Cuenca; DIUC
Bases del XIII Concurso Universitario de Proyectos de Investigación. Organizado por la Dirección de Investigación de la Universidad de Cuenca durante el año 2011. Los proyectos ganadores comenzaron a ejecutarse en 2012.
BASES DEL XIII CONCURSO UNIVERSITARIO DE PROYECTOS DE INVESTIGACIÓN
(Universidad de Cuenca, 2014-07) Dirección de Investigación de la Universidad de Cuenca; DIUC
Bases del XIII Concurso Universitario de Proyectos de Investigación. Organizado por la Dirección de Investigación de la Universidad de Cuenca durante el año 2014. Los proyectos ganadores comenzaron a ejecutarse en 2015.
BASES DEL XIV CONCURSO UNIVERSITARIO DE PROYECTOS DE INVESTIGACIÓN
(Universidad de Cuenca, 2015-10-01) Dirección de Investigación de la Universidad de Cuenca; DIUC
Estas son las Bases y Condiciones del XIV Concurso Universitario de Proyectos de Investigación. La Dirección de Investigación de la Universidad de Cuenca (DIUC) tiene como política institucional, el fortalecer el desarrollo de las ciencias, las tecnologías, las artes, las humanidades y los conocimientos ancestrales en la Universidad de Cuenca, con enfoque disciplinario e interdisciplinario e incentivando la creación y la inserción de los grupos en redes de investigación, en respuesta a las necesidades sociales nacionales, regionales y locales. Dentro de esta política, la Universidad de Cuenca, a través de la DIUC, convoca al XIV Concurso Universitario de Proyectos de Investigación cuyo propósito general es fomentar y consolidar la investigación en los grupos de investigación de la Universidad de Cuenca, a través del desarrollo de proyectos de investigación.
Bioleta Mata: una planta que interactúa por medio de realidad aumentada
(Universidad de Cuenca, 2014) Chang, Carolina; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
This paper describes a real plant that features an intelligent vehicle. The plant navigates through indoor environments, responds to environmental stimuli, interacts with humans through augmented reality, detects fire, and asks for help via Twitter. Experiments show that there are no false positives in the detection of fire, and that the detection of fire is greater than 50%, for distances along the sight line between the flames and the sensor of less than 5 m. Communication by XBee radios in indoor environments is effective up to 25 m at least.
Buscando la excelencia educativa: gestión de procesos académicos y administrativos en instituciones públicas de educación mediante BPM
(Universidad de Cuenca, 2014) Flores, Ana; Lavín, José M.; Calle, Xavier; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC; Alvarez, Edison
The need to improve the efficiency of organizations has forced to adopt new management policies. This need has also come to public institutions, including universities. One possibility for improvement is the application of the Business Process Management (BPM) to public management. ICT provides the opportunity to implement this approach through a tool like a Business Process Management Suite (BPMS), which increases the benefits of the new management providing process automation, redesign and a continuous improvement. The case study is the implementation of a BPMS in a public educational institution in Ecuador to see how management is improved, achieving higher levels of quality and reduced processing times.
Caracterización de Líneas de Investigación de la Universidad de Cuenca
(Universidad de Cuenca, 2013-06-17) Dirección de Investigación de la Universidad de Cuenca; DIUC; Bermúdez, Fernando Gerardo; Castro, Cecilia; Bojorque Iñeguez, Jaime Asdrúbal; Samaniego, Esteban; Borrero Vega, Ana Luz; Cuesta Delgado, Daniel; Quinde Herrera, Karina; Pozo Rodríguez, Santiago Estuardo
Este documento tiene como objetivo realizar algunas definiciones relacionadas con el concepto de línea de investigación. Estas definiciones son fundamentalmente de carácter instrumental y apuntan a la creación de mecanismos institucionales de puesta en marcha y consolidación de procesos de investigación a largo plazo en la Universidad de Cuenca. La Dirección de Investigación de la Universidad de Cuenca (DIUC) ha decidido centrar sus esfuerzos en el desarrollo de líneas como una forma de dotar de claridad, coherencia y continuidad en el tiempo a las actividades de los grupos de investigación de nuestra institución. Se busca ante todo coordinar las iniciativas individuales y colectivas para potenciarlas mediante políticas apropiadas.
Caracterización de señales sísmicas del Volcán Cotopaxi utilizando estimadores espectrales clásicos y de máxima entropía
(Universidad de Cuenca, 2014) Jaramillo A., Carolina E.; León V., Rubén D.; Lara C., Román A.; Benítez M., Diego S.; Ruiz, Mario; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
A study of the detection and characterization of volcano-tectonic seismic type of events, using a long period of records of the Cotopaxi volcano, is presented. The sequential detection structure, proposed as part of this work, allows maximizing the likelihood of the presence of an event and minimizes the absence of this from a seismic record. The detection is performed in the near real time domain, maintaining a constant false alarm rate, enabling in a later stage a more detailed study of the spectral content of the events using classical spectral estimators such as the periodogram and the parametric maximum entropy method by Burg. The approach enabled to categorize phenomenon detected as volcano-tectonic from a long record of observations which even include activities of non-tectonic origin, such as the other two types of lightning.
Caracterización espectroscópica de impedancia de polímeros para el uso en electrodos de electrocardiogramas
(Universidad de Cuenca, 2014) Véliz, Bremnen; Huilcapi, Víctor; Cajo, Ricardo; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
A comparative impedance study of a polymer type Thermoplastic Polyolefin Elastomer with a commercial universal gel electrode has been made in order to know whether the polymer can be used as dry electrode for the acquisition of cardiac signals. The results of the impedance spectroscopy showed very similar characteristics and that both devices behave as resistors. For instance, at 120 Hz the polymer measured a resistance of 6,3 k and the commercial gel electrode 7,2 k . Further, it was getting a linear relation of current versus voltage, determining resistances of 7 k and 8,2 k for the polymer and commercial gelled electrode respectively. Finally we have concluded that the polymer is applicable to construct dry electrodes.
Characteristics of romantic relationships during adolescence: A review of Anglo-western literature
(Universidad de Cuenca, 2013-12) Jerves Hermida, Elena Monserrath; Rober, Peter; Enzlin, Paul; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca; DIUC
Romantic relationships are a central aspect of the life of adolescents and have an important influence on the socio-affective and sexual development. This paper presents a review of the scientific literature on romantic relationships during adolescence and aims to unravel the ongoing debate in the literature and to identify possible gaps. The review encompasses the analysis of 36 studies on romantic relationships in adolescence, all published in peer-reviewed English scientific journals. The analysis of the published data was guided by five central characteristics of romantic relationships of adolescents: i.e., involvement, partner selection, content, quality, and emotions and cognitions emerging from the relationship. It was found that although during the last decade a growing interest of scholars in the study of romantic relationships in adolescents emerged, providing a certain body of knowledge on the topic in general, there are still gaps in the understanding of adolescents’ romantic relationships in different socio-cultural contexts. Limitations of the reviewed studies in terms of agreement on definitions, inconsistencies in sample population, research design and methodological approach are discussed.
Characterizatión of main external climate influences in rainfall and air temperature in the Paute River Basin - Southern Andes of Ecuador
(Universidad de Cuenca, 2011-07) Mora, D. E.; Willems, Patrick; DIUC; Universidad de Cuenca; Dirección de Investigación de la Universidad de Cuenca
Characterization of climate variability in the Andes mountain range needs special assessment as rainfall and temperature are extremely variable in space and time. This paper examines the anomalies of observed month rainfall and temperature data of respectively 25 and 16 stations, from the early 1960‟s to the 1990‟s and compare them against anomalies from different external climate influences in annual and 3-month seasonal block periods. The stations are located in the Río Paute Basin in the Ecuador‟s southern Andes. All stations are within the elevation band 1800 and 4200 m a.s.l. and affected by the Tropical Pacific, Amazon and Tropical Atlantic climate. The results show similar temperature variations for the entire region, which are highly influenced by the ENSO, especially during the DJF season. During JJA, the correlation is weaker showing the influence of other climate factors. Higher temperature anomalies are found at the high elevation sites while in deep valleys the anomalies are less significant. Rainfall variations depend, in addition to elevation, on additional factors such as the aspect orientation, slope and hydrological regime. Highest and most significant rainfall anomalies are found in the eastern sites.