Catholic University of Cuenca
Cuenca, Ecuador
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Morales D.X.,Catholic University of Cuenca | Icaza D.,Catholic University of Cuenca | Lliguin L.,Catholic University of Cuenca | Melgar S.,Catholic University of Cuenca | Vimos V.A.,Salesian Polytechnic University
2016 IEEE International Conference on Automatica, ICA-ACCA 2016 | Year: 2016

This paper aims to determine the acceptability of residential electric vehicle (EV) on distribution system networks. Since, in Ecuador the last year has been an important impulse for changing the conventional vehicles for electric ones, the government is launching new policies in order to foster the CO2 reductions by some alternatives; the first one considers deploying in the medium term EV in the main cities, the initiative will start changing vehicles in the public enterprises. In this paper, a study based in surveys to forecast the real EV penetration and its impacts into the distribution transformer is presented. © 2016 IEEE.

Minchala L.I.,University of Cuenca | Ochoa S.,University of Cuenca | Velecela E.,University of Cuenca | Astudillo D.F.,University of Cuenca | Gonzalez J.,Catholic University of Cuenca
IEEE Latin America Transactions | Year: 2016

The computer integrated manufacturing (CIM) approach allows the possibility to remotely and optimally control the entire production process in a plant. The implementation of CIM architectures demands the installation of several software platforms, which most of the cases are commercial and have high licensing prices. This research presents the development of an open software architecture for advanced CIM (OSACIM) by using two open software development platforms: Java and Python. The use of open software in the development of this solution allows the creation of a low price CIM approach. The results of using the system in laboratory tests show good results in comparison with commercial softwares for developing OPC communications and SCADA systems, which perform similar functionalities as the proposed OSACIM. The main features and limitations of the system are reported. © 2016 IEEE.

Shuracpamba, a colonial farm located in southern Ecuador, has remained in anonimity. With the aim of making some of the particularities of this architectural complex; tasks such as bibiliographic research and in situ recognition of the preserved building have been carried out. This research is one of the few texts that addresses the object and some of its multiple dimensions, although partially, by constructing its historical and historical-constructive sequence, and tying them in with some social and historical connections. Additionally, this is the first research to test the statigraphic constructive methodological analysis by evidencing five building campaigns, materials and techniques used. © 2016 CSIC.

Romero Viamonte K.,Autonomous Regional University of the Andes | Ulloa Castro A.,Catholic University of Cuenca
Revista Cubana de Obstetricia y Ginecologia | Year: 2016

Introduction: Sexually transmitted diseases affect people from any ethnics, social strata and age. They are more frequent in people with risky sexual behaviors. The conventional diagnosis only allows determining a pathogen at a time and the causative microorganisms of these infections are not fully identified. The use of new better methods of diagnosis such as the molecular methods is a timely research tool that suits to the present realities. Objective: To determine the most common pathogenic agents in sexually transmitted diseases that are diagnosed through multiplex-polymerase chain reaction in all women who go to the health center no.1 in Azogues. Methods: Retrospective study of women who go to the health center no.1 in Azogues from September 2015 to March 2016. Results: Of the group of women who went to physician’s office, 46% were 34 to 44 years. Women living in urban places accounted for 66% and those with higher education 38%. Multiplex polymerase chain reaction allowed determining the presence of Mycoplasma hominis, Neisseria gonorrhoeae, Ureoplasma urealyticun and trichomonas vaginalis even when 98% of patients were asymptomatic. Among the risk factors of the disease were non use of condom and lack of knowledge of sexually transmitted infections and their symptoms. Conclusions: Multiplex polymerase chain reaction technique is an effective tool for early detection of several pathogenic agents. © 2016, Editorial Ciencias Medicas. All rights reserved.

Romero Viamonte K.,Autonomous Regional University of the Andes | Estrada Cherres J.P.,Catholic University of Cuenca
Revista Cubana de Obstetricia y Ginecologia | Year: 2016

Introduction: The inappropriate use of antimicrobials is a world concern and in Ecuador, this problem worsens because there are not relevant measures in place to control the situation. Neither surveillance programs of infections caused by resistant bacteria nor control of the indiscriminate use of antimicrobials are implemented. The health professionals’ knowledge is poor about it and the infection commissions are nonexistent in hospitals. Objective: To evaluate the quality of prescription and the cost of treatment of preoperative antibiotic prophylaxis through drug therapy follow-up in patients operated on for gynecological problems. Method: A retrospective study and an economic assessment of treatment cost minimization type was carried out in “Homero Castanier Crespo” hospital in Ciudad de Azogues, Ecuador, from September 2015 to March 2016. Results: Most of the patients were 21 to 40 years-old. The main reasons for surgery were ruptured ovarian cyst and uterine myoma. Clean-contaminated surgeries predominated. The most used antimicrobial was cefazoline at a single dose every 8, 12 and 24 hours. Around 20% of cases changed their treatment with no justification. PRM6 prevailed. Most of prescriptions were inadequate. The global cost of antimicrobials was 503.09 US dollars. If prophylaxis would have been correctly applied, then 435.45 US dollars had been saved. Conclusions: It is suggested that the preoperative protocol of antibiotic prophylaxis be redesigned in “Homero Castanier Crespo”. © 2016, Editorial Ciencias Medicas. All rights reserved.

Echeverria C.,University of Los Andes, Venezuela | Tucci K.,University of Los Andes, Venezuela | Alvarez-Llamoza O.,University of Carabobo | Alvarez-Llamoza O.,Catholic University of Cuenca | And 3 more authors.
Frontiers of Physics | Year: 2017

We propose a model for studying binary fluids based on the mesoscopic molecular simulation technique known as multiparticle collision, where the space and state variables are continuous, and time is discrete. We include a repulsion rule to simulate segregation processes that does not require calculation of the interaction forces between particles, so binary fluids can be described on a mesoscopic scale. The model is conceptually simple and computationally efficient; it maintains Galilean invariance and conserves the mass and energy in the system at the micro- and macro-scale, whereas momentum is conserved globally. For a wide range of temperatures and densities, the model yields results in good agreement with the known properties of binary fluids, such as the density profile, interface width, phase separation, and phase growth. We also apply the model to the study of binary fluids in crowded environments with consistent results. © 2017, Higher Education Press and Springer-Verlag Berlin Heidelberg.

Gamez B.,Catholic University of Cuenca | Cabrera M.,Catholic University of Cuenca | Serpa L.,Catholic University of Cuenca | Cabrera J.,Catholic University of Cuenca
Proceedings - 2015 Asia-Pacific Conference on Computer-Aided System Engineering, APCASE 2015 | Year: 2015

The design of a distal extremity prosthesis (right hand) based on the anthropometric measures of a 10-year old child is presented. Each finger is disposed in two sections, a fusion of the middle and distal phalanx, and a proximal phalanx articulated to the hand palm. The angles of the movement for the extension and flexion of all fingers, except the thumb, are controlled by a link located sideways. The drive system, that generates three degrees of freedom to execute the cylindrical grasp's functions, the precision grasp, hook prehension and the extended index finger, is based on three linear actuators located on the palm, which have a reference potentiometer that provides its position, such indication is used by the microcontroller via the analogic input signal. To validate the design, a stresses and displacements analysis, and the determination of the safety factor that offers the device for the selected materials is carried out, using a computer program based on the Finite Element Method. The results obtained show a light prosthetic device that weights 150 grams, and can operate safely allowing four grip functions with the normal angles of the hand. © 2015 IEEE.

Cardenas Cantos L.,Catholic University of Cuenca | Lopez Izquierdo J.,Catholic University of Cuenca | Cardenas Cantos E.,Catholic University of Cuenca
IEEE Latin America Transactions | Year: 2016

This article presents an Interactive Multimedia Application developed as an alternative support for education professionals and students Race of Engineering Grade in which it requires make use of different branches of mathematics, with specific focus on analytic geometry, allowing greater agility and quickness on the understanding abstract concepts. This Interactive Multimedia Application was developed through the study of various didactic methods and teaching and learning resources used in the classroom and that lead to loss of motivation by part the students to assimilate meaningful learning topics; therefore, this project is conceived as an additional teaching strategy to the existing ones, on which it tends to place greater emphasis on autonomous work and so try improve academic performance. © 2016 IEEE.

Objective: To describe variations of corneal morphometric haze, in surface Excimer Laser treatment, and its relationship with the ametropy magnitude. Method: A prospective, longitudinal observational and descriptive research was carried out in 56 patients (111 eyes) who underwent of myopic astigmatism LASEK surgical technique, with Mitomycin. We used the confocal microscope NIDEK 4 Confoscan for the collection and analysis of the images. Data were processed through the program SPSS 21.0, ANOVA for repeated measurements for a factor with the confidence interval adjustment by Bonferroni, Pearson correlation and linear regression model. Results: Significant direct correlation between the thickness of the corneal haze and the magnitude of the ametropy was obtained. Higher value of this variable, it is the thickness of the retrieved corneal haze, and there is more correlation to the three months of operation. The value of R2 retrieved is not optimal. Only 39% of the corneal haze variations are dependent on the magnitude of the treated ametropy. Conclusions: The corneal haze thickness obtained in patients who underwent surgery with Excimer Laser through the LASEK technique, is dependent on the magnitude of the ametropy, and acquires its greatest value at 3 months postoperative. The magnitude of the ametropy is not the only factor influencing haze thickness. In transparent corneas in the postoperative of LASEK, always there is some degree of morphometric corneal haze. © 2016 Sociedad Mexicana de Oftalmología.

PubMed | Catholic University of Cuenca
Type: Journal Article | Journal: Archivos de la Sociedad Espanola de Oftalmologia | Year: 2015

To develop corneal morphometric models with refractive error in excimer laser surgery.A prospective-longitudinal study was conducted on 78 patients (151 eyes) using the LASIK surgical technique, and 56 patients (111 eyes) with myopic astigmatism using ESIRIS (Schwind-Germany) equipment with pendulous microkeratome. The results were analyzed using descriptive statistics. A NIDEK Confoscan microscope was used to obtain and study the images.After LASIK treatment 84.3% of the variations in epithelium thickness variations were due to the magnitude of refractive error and the epithelium thickness before LASIK treatment. More than two-thirds (68.8%) of the variations in keratocyte density variations in posterior flap and 48.2% of the variations in the anterior retroablation zone were due to the magnitude of the refractive error. Variations of 90% were found in the corneal thickness after LASEK, which were due to the magnitude of the refractive error before LASEK.Predictive models reveal that morphometrical variations depend of the magnitude of the refractive error. These models are very important in the selection of patient for refractive surgery, and also for the specific technique to use.

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