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1
tesis de maestría
This master thesis is devoted to the state estimation of a particular form of PDE systems, coupled parabolic PDEs with spatial dependent coefficients. This form of PDEs represent some dynamic systems such as Tubular Reactors, Diffusion in lithium-ion cells and Diffusive Gradient in Thin Films sensor. Other methods for this problem use "Backstepping" observers, in which the estimation error system is transformed into another system that is stable, reducing the problem to calculate the Kernel functions making the transformation possible. In some cases this calculation is not simple, also the simulation in real time of the observer system, that is also a PDE, can be difficult. The method presented in this thesis uses the properties of the so-called Modulating Functions in order to estimate the states. The procedure con- sists of generating an orthonormal basis of functions that can represen...
2
tesis de maestría
This master thesis is devoted to the state estimation of a particular form of PDE systems, coupled parabolic PDEs with spatial dependent coefficients. This form of PDEs represent some dynamic systems such as Tubular Reactors, Diffusion in lithium-ion cells and Diffusive Gradient in Thin Films sensor. Other methods for this problem use "Backstepping" observers, in which the estimation error system is transformed into another system that is stable, reducing the problem to calculate the Kernel functions making the transformation possible. In some cases this calculation is not simple, also the simulation in real time of the observer system, that is also a PDE, can be difficult. The method presented in this thesis uses the properties of the so-called Modulating Functions in order to estimate the states. The procedure con- sists of generating an orthonormal basis of functions that can represen...
3
tesis de grado
Foreground detection is the task of labelling the foreground (moving objects) or background (static scenario) pixels in the video sequence and it depends on the context of the scene. For many years, methods based on background model have been the most used approaches for detecting foreground; however, their methods are sensitive to error propagation from the first background model estimations. To address this problem, we proposed a U-net-based architecture with a feature attention module, where the encoding of the entire video sequence is used as the attention context to get features related to the background model. Furthermore, we added three spatial attention modules with the aim of highlighting regions with relevant features. We tested our network on sixteen scenes from the CDnet2014 dataset, with an average F-measure of 97.84. The results also show that our model outperforms traditio...
4
tesis de maestría
Publicado 2025
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La presente tesis detalla el desarrollo e implementación de un robot diferencial equipado con una Unidad de Medición Inercial Inertial Measurement Unit (IMU), encoders y Lidar. Estos sensores proporcionan datos para la navegación del robot dentro de un entorno controlado. El objetivo principal de esta investigación es mejorar la precisión en la estimación de la posición del robot mediante el uso de funciones modulantes, incrementando así la exactitud en la estimación de sus coordenadas. La IMU, un sensor fundamental para medir aceleraciones y velocidades angulares, es particularmente susceptible al ruido y la deriva, lo que puede comprometer la exactitud de las estimaciones de posición y orientación. Al integrar funciones modulantes, estos problemas se mitigan, resultando en una mejora en la calidad de los datos sensoriales. Este enfoque compensa eficazmente la deriva, lo que ...
5
artículo
Publicado 2022
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In a general parlance, wireless communication tends to be investigated based on the available methods that support enhancing the optimized data link, especially the software-based methods. AI is mainly used to create and design efficient communication network systems and variable node locations. The major factors impacting wireless communications in the current context are enhanced channel frequency, efficiency of using the bandwidth, and modulation type. The software-defined ratio enables collecting the information and analyzing the overall signal-related components and processing them in real-time situations. This will support in detecting unnecessary information and identifying latency at each stage of communication. The study is intended to measure the influence of critical factors in enhancing the overall management of wireless communication systems through the application of AI tec...
6
artículo
Publicado 2018
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The building of a housing module with recyclable materials contributes with an innovative construction system and allows changing environmental behavior. The objective research is the building of a housing module with recyclable material in Huánuco, transforming solid waste into useful elements for the building of houses, as well as presenting a proposal for a solution to the problem of housing deficit and problem of environmental pollution. The proposed methodology research generates new knowledge in the project experience of a project made or one to be built. Compression tests were carried out on the plastic bottles and the foundation was analyzed. It was concluded that the ring tires 16 are suitable for using in foundations and windows; the tires of tricycles are apt for the stem wall; the bottles (pet) of mineral water, filled with compact earth are suitable for the walls and the st...
7
artículo
Publicado 2020
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The intake of dehydrated fruits helps to reduce digestive problems, promotes intestinal transit, improves the gastrointestinal system and prevents throat problems, among other benefits. In this work, using a multipurpose solar module (MSM), which was designed and built by the research team of the Center for Renewable Energies of the National University of San Cristóbal de Huamanga (UNSCH), dehydrated apples, pineapples and bananas, constituting a product to commercialize, which we call SNACK SOLAR. The physical-chemical evaluation of these dehydrated fruits shows that the concentration of ascorbic acid (vitamin C) was greatly improved, thus in 100 g of affected apple from 0.833 mg to 13.33 mg, in 100 g of affected pineapple from 27.5 mg to 39.33 mg and in 100 g of bananas increased from 13.83 mg to 39.33 mg, which represents a significant contribution to human food, even more, using the...
8
artículo
Publicado 2018
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Nowadays it is not enough to be well informed, we need to be able to reach the levels of competencies necessary to develop ourselves in work and in society. In the city of Huánuco, teachers are slowly entering into the use of computer resources within their pedagogical activities, and the Ministry of Education, for its part, implements educational resources with computer resources. There are students who live with computer media, with whom the teacher has to share the teaching - learning process. In this reality, the question is posed: Will the application of the Digital Literacy module improve the digital skills of teachers, Huánuco, 2016? having as objective to determine if when applying the module Digital Literacy improves the digital competences in the teachers. The quasi-experimental design of a pre-test and post-test with a single group is assumed, with 22 teachers as sample. The...
9
artículo
This paper presents an assessment of the need for more serious proposals MINEDU has worked to overcome the serious problems in terms of reading comprehension are presented in Peruvian education: the modules of the National Mobilization for Reading Comprehension, which has been taking out since 2009. This mobilization has ensured that all students in the country are required readings for classroom work, which have been selected and adapted according to the multicultural reality of our country. This research allowed us to evaluate the implementation of these modules through the use of surveys to a representative sample of Peruvians educational institutions (Lima, La Libertad, Moquegua, Junin, Huanuco, San Martin and Madre de Dios). These information gathering tools were applied to teachers and students, which were then contrasted with the Classroom Observation Form. Through them are eviden...
10
artículo
Publicado 2019
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The purpose of this research is to demonstrate the effectiveness of the use of the constructivist strategy to improve reading comprehension in the English language in students of Alternative Basic Education (EBA) of the Ministry of Education of Peru. The application of this strategy allows the student to get involved with the text, since it gathers his previous experiences as a reader, as well as his daily life; pushing it to put together new concepts, facilitating in this way to understand the texts it reads. The "A busy day in the office" Entry and Exit Test is applied, which has achieved the principles of validity and reliability, before starting the experience. A sample of 32 first-year students of the CEBA "Bartolomé Herrera", 16 of the "A" section, control group and 16 of the "B" section of the experimental group was selected. The ages of the students range from 16 to 29 years; Ac...
11
artículo
Publicado 2020
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The intake of dehydrated fruits helps to reduce digestive problems, promotes intestinal transit, improves the gastrointestinal system and prevents throat problems, among other benefits. In this work, using a multipurpose solar module (MSM), which was designed and built by the research team of the Center for Renewable Energies of the National University of San Cristóbal de Huamanga (UNSCH), dehydrated apples, pineapples and bananas, constituting a product to commercialize, which we call SNACK SOLAR. The physical-chemical evaluation of these dehydrated fruits shows that the concentration of ascorbic acid (vitamin C) was greatly improved, thus in 100 g of affected apple from 0.833 mg to 13.33 mg, in 100 g of affected pineapple from 27.5 mg to 39.33 mg and in 100 g of bananas increased from 13.83 mg to 39.33 mg, which represents a significant contribution to human food, even more, using the...
12
artículo
Publicado 2022
Enlace
Enlace
Programmable logic controllers (PLC) devices play an important role in automation systems; therefore, technicians must have adequate training with these devices. If a student wants to learn about PLCs, they will find two problems. First, training programs are expensive, and second, PLC modules are not suitable for gaining hands-on skills. This study proposes the implementation and validation of a less expensive PLC module that is accessible to students interested in learning about this technology. Two prototypes were developed using a PIC16F877 and an ATMEGA328P microcontroller. This study describes the enhancement made in the second prototype over the first prototype. Finally, a comparison test between the two prototypes and two commercial PLCs is demonstrated. A MyRIO programmed as a data logger monitored the PLC operation for 12h. The program recorded the response time of the PLC outp...
13
artículo
Publicado 2022
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The rapid growth of the market for the use of renewable energy has increased the use of solar energy which has a significant role in power generation. This requires the insertion of equipment capable of providing precise measurements of the photovoltaic modules, either to verify the operation of the installation or to find specific problems. In this scenario, the current versus voltage curve tracer is used to describe the electrical behavior of the photovoltaic system through all the operating possibilities, but it has an excessive cost for small installations. This paper presents the development of a current-voltage curve tracer, capable of performing current, voltage and power measurements, contributing to the creation of equipment to test photovoltaic installations. The methods to obtain the I-V curves are presented and the characteristics of the embedded electronic system, which is b...
14
artículo
Publicado 2013
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This work describes and evaluates the application of a module to increase the specific abilities set in action when students resolve math problems. Such abilities are: analyzing the problem, identifying and laying out strategies, applying algorithms and revising the process that leads to the solution. The module presents problems solved by the teacher (modelling strategies) and uses the work of peers in order to consolidate and evaluate the work. The study uses a quasi experimental design with two pre defined groups, pre and post test. The sample was not probabilistic and was formed by 70 students. A test with 10 math problems was used as the instrument meant for the students to use the four strategies suggested in the module. Results show a difference in favor of the experimental group, which allows us to conclude that the module has an influence in the evaluated abilities.
15
artículo
Publicado 2021
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Background: In the diagnostic process of psychological disorders, we can find common characteristics to different problems, being able to explain a variety of clinical difficulties and comorbidities from this cross-sectional category, which has been called transdiagnostic. Being emotional regulation a transdiagnostic variable that is defined as the ability of the person to make use of resources or skills to modulate the behavioral response produced after experiencing a moderate to high intensity emotion. Objective: To explain the impact of the emotional regulation variable in clinical theory and practice through a transdiagnostic look. Discussion: The term transdiagnosis arises from a series of drawbacks in its foundation and practice, being these: dissatisfaction with traditional models such as the International Classification of Diseases and Disorders related t...
16
artículo
Publicado 2020
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Objective. To determine if emotional dependence is a risk factor for family violence of women treated in the Integrated Judicial Module on Family Violence of Huancayo. Methods. Quantitative, analytical, observational study of cases and controls. The sample consisted of 2 groups; the first of 83 women victims of family violence (case), the second of 21 women who did not report family violence (control). The questionnaire of emotional dependence was applied, for the test of hypothesis crossed tables were used, in order to analyze the odds ratio (OR). Results. It was determined that the average age was 32.5 years, the marital status was mostly cohabiting with 42,2%, the level of primary education, secondary, with 44.6%, the majority occupation, housewife in 63.9% and the type of violence they reported was physical and psychological in 41.3% of cases. The levels of dependence on the six fact...
17
artículo
Publicado 2021
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The objective was to evaluate the effect of the application of the GeoGebra software on the problem-solving skills of two-dimensional geometric figures in a sample of 53 university students distributed in two groups (control -experimental) evaluated in two moments: before and after the intervention. . Parametric tests were used to compare independent and related pairs and nonparametric tests were used to compare between classification levels. The results showed that the post-test experimental group was the one that presented the best performance, demonstrating that the use of GeoGebra software improved the solving skills of this type of mathematical problems, promoting collaborative work, social-student integration and improvement of the classroom climate. It is recommended to extend the use of this tool with other applications that help the teaching-learning process.
18
artículo
Publicado 2013
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This work describes and evaluates the application of a module to increase the specific abilities set in action when students resolve math problems. Such abilities are: analyzing the problem, identifying and laying out strategies, applying algorithms and revising the process that leads to the solution. The module presents problems solved by the teacher (modelling strategies) and uses the work of peers in order to consolidate and evaluate the work. The study uses a quasi experimental design with two pre defined groups, pre and post test. The sample was not probabilistic and was formed by 70 students. A test with 10 math problems was used as the instrument meant for the students to use the four strategies suggested in the module. Results show a difference in favor of the experimental group, which allows us to conclude that the module has an influence in the evaluated abilities.
19
tesis doctoral
Publicado 2015
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Enlace
Descargue el texto completo en el repositorio institucional de la Universidade de São Paulo: https://doi.org/10.11606/T.43.2015.tde-14082015-110334
20
tesis de maestría
The field of autonomous driving has been evolving rapidly within the last few years and a lot of research has been dedicated towards the control of autonomous vehicles, especially car-like ones. Due to the recent successes of artificial intelligence techniques, even more complex problems can be solved, such as the control of autonomous multibody vehicles. Multibody vehicles can accomplish transportation tasks in a faster and cheaper way compared to multiple individual mobile vehicles or robots. But even for a human, driving a truck-trailer is a challenging task. This is because of the complex structure of the vehicle and the maneuvers that it has to perform, such as reverse parking to a loading dock. In addition, the detailed technical solution for an autonomous truck is challenging and even though many single-domain solutions are available, e.g. for pathplanning, no holistic framework e...
