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1
artículo
Publicado 2021
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A esthetic and functional rehabilitation is considered the maximum objective of any dental treatment, with a sustained and updated scientific base, always seeking a complete and comprehensive diagnosis, focused on presenting a treatment plan according to comprehensive needs of the patient, executed in a conscious way with an established multidisciplinary approach, with foundations based on constant dialogue between the professional, the patient and the dental technician. The objective of this report is to describe step by step the clinical stages of a multidisciplinary treatment which is based on prior diagnosis and planning; looking for the interaction of different specialties: periodontics, oral rehabilitation, aesthetic dentistry, occlusion, and an integral work with the dental laboratory, to achieve the stability of periodontal and dental tissues. Thus recovering the masticatory fu...
2
tesis de maestría
A neural network is a mathematical model that is able to perform a task automatically or semi-automatically after learning the human knowledge that we provided. Moreover, a Convolutional Neural Network (CNN) is a type of sophisticated neural network that has shown to efficiently learn tasks related to the area of image analysis (among other areas). One example of these tasks is image segmentation, which aims to find regions or separable objects within an image. A more specific type of segmentation called semantic segmentation, makes sure that each region has a semantic meaning by giving it a label or class. Since neural networks can automate the task of semantic segmentation of images, they have been very useful for the medical area, applying them to the segmentation of organs or abnormalities (tumors). Therefore, this thesis project seeks to address the task of semantic segmentation of ...
3
artículo
Publicado 2021
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CF is an autosomal recessive disease, requiring mutations to be present in both alleles in the CF transmembrane conductance regulatory gene (CFTR). The c.3274T> C (p.Tyr1092His) mutation is not registered in the “CFTR2 project” database, but it is registered in The Human Gene Mutation Database. Neither are the two DNAAF4 c.1177C> T (p.Leu393Phe) and DNAAF5 c.1195G> A (p.Glu399Lys) mutations found in the "CFTR Project”, and their clinical consequences are currently uncertain. Here, we report the case of a Peruvian woman presenting this mutation, bronchiectasis and loss of lung function and provide a review of the literature.
4
artículo
Publicado 2021
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CF is an autosomal recessive disease, requiring mutations to be present in both alleles in the CF transmembrane conductance regulatory gene (CFTR). The c.3274T> C (p.Tyr1092His) mutation is not registered in the “CFTR2 project” database, but it is registered in The Human Gene Mutation Database. Neither are the two DNAAF4 c.1177C> T (p.Leu393Phe) and DNAAF5 c.1195G> A (p.Glu399Lys) mutations found in the "CFTR Project”, and their clinical consequences are currently uncertain. Here, we report the case of a Peruvian woman presenting this mutation, bronchiectasis and loss of lung function and provide a review of the literature.
5
artículo
Publicado 2023
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The functions performed by the Board of Directors are delimited by the diligence and loyalty duties it maintains with the company. However, this delimitation is developed on the basis of the normal operation of the company in question. However, this delimitation structured based on regular business situations, leaving undefined duties that may be demanded during a situation of financial difficulties.This article will explore how the behaviour of the Board of Directors should be when companies are in the ‘zone of insolvency’ considering the different economic scenarios that may arise in distress situations.
6
documento de trabajo
Para evaluar el efecto de los costos laborales sobre el empleo es crucial tener estimaciones confiables de la elasticidad costo laboral de la demanda de trabajo. Usándose una base de datos emparejados a nivel de firmas y trabajador, estimamos una función de demanda no condicionada de trabajo de largo plazo, explotando información sobre trabajadores para corregir la endogeneidad en la determinación de los salarios. Evaluamos los efectos sobre el empleo y la pérdida de eficiencia social de los valores observados de las aportaciones de los empleadores impuestas por la legislación laboral (seguro de salud, capacitación e impuestos) así como de las deducciones a los trabajadores (seguridad social e impuesto a la renta). Encontramos que los costos laborales no salariales reducen el empleo en 17% para los empleados y en 53% para los obreros, con pérdidas de eficiencia social asociadas ...
7
artículo
Publicado 2019
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A neural network is a mathematical model that is able to perform a task automatically or semi-automatically after learning the human knowledge that we provided. Moreover, a Convolutional Neural Network (CNN) is a type of neural network that has shown to efficiently learn tasks related to the area of image analysis, such as image segmentation, whose main purpose is to find regions or separable objects within an image. A more specific type of segmentation, called semantic segmentation, guarantees that each region has a semantic meaning by giving it a label or class. Since CNNs can automate the task of image semantic segmentation, they have been very useful for the medical area, applying them to the segmentation of organs or abnormalities (tumors). This work aims to improve the task of binary semantic segmentation of volumetric medical images acquired by Magnetic Resonance Imaging (MRI) usi...
8
artículo
Publicado 2024
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This work presents a sensor-based fluid pipeline leak detection system using an Adaptive Neuro-Fuzzy Inference System (ANFIS). The implemented model consists of multiple flow sensors and pressure differentials, processed through a hybrid neural network and fuzzy logic hybrid system. The network comprises five layers, with layer 1 being in charge of performing the membership function and layer 5 being part of the calculation of the exit rule. The system aims to detect and prevent fluid leakage in fluid passages by identifying changes in fluid flow and pressure differential. The results demonstrate that the ANFIS system can accurately detect leaks in the ducts, reaching 93.24 % of accuracy, indicating the percentage of correct predictions in the training set. Additionally, a validation set not part of the training was used for the model's generalization ability. This data set allowed us to...
9
artículo
Publicado 2022
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Peru is one of the countries most exposed to catastrophic events worldwide such as: floods, debris flow, tsunamis, earthquakes. Particularly, earthquakes are generated by the interaction of the Nazca and South American plates known as the subduction process and shallow faults. Likewise, another major problem that Peru is going through is informality in construction, which, added to a large earthquake, could bring with it great economic losses and human lives. Therefore, these problems have motivated the development of this research, which aims to evaluate the seismic risk of buildings in the district of Ayacucho - Peru. In this sense, the probabilistic seismic threat is evaluated using the R-CRISIS program, accompanied by geophysical studies such as MASW (Multichannel Analysis of Surface Waves) that allow the soil to be characterized based on shear wave velocities. Furthermore, the seism...
10
artículo
Publicado 2015
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In this article a case study on the loss of appetite approached from the Acceptance and Commitment Therapy is presented. First, experiential avoidance was conceptualized as a transdiagnostic dimension common to various human problems. Then, the story of the participant was reviewed and the assessment of the case was done by the Parental Acceptance and Action Questionnaire (PAAQ) and a record length of conduct, based on all functional analysis of the case was conducted. Subsequently, Acceptance and Commitment Therapy (ACT) was applied in order to break the avoidant repertoire and route the path of life towards the valued actions, after that three follow-ups were conducted. Finally, the results obtained from topographic and functional successful benefits were analyzed and discussed, contingent on the application of ACT in the field of eating behavior problems.
11
artículo
Publicado 2024
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This paper introduces an innovative approach to address the distribution network reconfiguration (DNR) challenge, aiming to reduce power loss through an advanced hyperbolic tangent particle swarm optimization (HT-PSO) method. This approach is distinguished by the adoption of a novel hyperbolic tangent function, which effectively limits the rate of change values, offering a significant improvement over traditional sigmoid function-based methods. A key feature of this new approach is the integration of a tunable parameter, δ, into the HT-PSO, enhancing the curve’s adaptability. The careful optimization of δ ensures superior control over the rate of change across the entire operational range. This enhanced control mechanism substantially improves the efficiency of the search and convergence processes in DNR. Comparative simulations conducted on 33- and 94-bus systems show an improvement...
12
tesis de maestría
Publicado 2019
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La estimación de funciones de vulnerabilidad se obtuvo mediante la estimación del costo medio y desviación estándar debido a daño sísmico producido por una cierta intensidad de evento sísmico, para una tipología estructural específica que caracterizan la incertidumbre del costo de daño desde el punto de vista probabilístico dado una intensidad sísmica que se asume aleatoria. El daño y su estimación se evaluaron para los elementos estructurales (columnas, vigas, losas aligeradas, placas etc.) y los no estructurales (tabiques, equipos, tuberías, instalaciones, vidrios, etc.). También se incluye los costos derivados de las pérdidas parciales o totales de funcionalidad del sistema estructural. Las curvas de vulnerabilidad son utilizadas como parte del análisis de riesgo sísmico que comprende las siguientes etapas: •Análisis del peligro sísmico •Análisis de la exposi...
13
tesis de maestría
Publicado 2019
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La estimación de funciones de vulnerabilidad se obtuvo mediante la estimación del costo medio y desviación estándar debido a daño sísmico producido por una cierta intensidad de evento sísmico, para una tipología estructural específica que caracterizan la incertidumbre del costo de daño desde el punto de vista probabilístico dado una intensidad sísmica que se asume aleatoria. El daño y su estimación se evaluaron para los elementos estructurales (columnas, vigas, losas aligeradas, placas etc.) y los no estructurales (tabiques, equipos, tuberías, instalaciones, vidrios, etc.). También se incluye los costos derivados de las pérdidas parciales o totales de funcionalidad del sistema estructural. Las curvas de vulnerabilidad son utilizadas como parte del análisis de riesgo sísmico que comprende las siguientes etapas: •Análisis del peligro sísmico •Análisis de la exposi...
14
tesis de grado
Real-Time Low-Cost Fault Detection System Placed in Non-Drive End of Motors Based on Neural Networks
Publicado 2025
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In modern industry, electric motors are essential components in a wide range of applications, from manufacturing production to transportation and power generation. These motors are critical in industrial machinery and equipment, and their proper functioning is crucial for maintaining operational efficiency and productivity. However, motors are susceptible to various types of faults that can be costly in terms of downtime, production loss, and repair expenses. Early detection of these faults is essential to prevent unscheduled shutdowns, reduce maintenance costs, and avoid workplace accidents. This paper proposes a low-cost, real-time fault detection system for motors placed on the Non-Drive End based on neural networks, aimed at improving operational efficiency and reducing maintenance costs in the industry.
15
tesis de grado
Publicado 2012
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The present investigation work was developed with the intention of sketching our posture in the face of a critical reality, and as professionals in the countable sciences to establish proposals of Increment of the Tributary Base. The National Tributary System is regulated through the Ordinance Legislative number 771 Law Marco of the National Tributary System. The National Tributary System is based on three strategic lines as they are: the execution control, facilitation of the execution and the fight against the tributary nonfulfillment. It is conformed by the tax to the rent, the General Tax to the Sales, the Selective Tax to the Consumption, the tariff rights, the municipal tributes and the contributions to the Public Health and the state system of pensions administered by the Office of Normalization of Forecast. The Tributary Code is the norm rector of the principles, institutions and...
16
artículo
Publicado 2024
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The loss of biodiversity and the effects of climate change hurt agricultural production and food security in Peru and around the world. The family farming sector in Peru (97% of agricultural units – AU) faces numerous challenges when it comes to sustainably producing food. To sustain Peruvian agriculture in the face of climate change, climate-smart agricultural (CSA) practices and agrobiodiversity conservation are essential. This document characterizes the level of agrobiodiversity (index IDA) of family AUs in the Crisnejas basin and analyzes the impact of the elements that affect farmers’ decisions to apply multiple CSA measures. CSA adoption decisions were analyzed using an econometric analysis framework combining multivariate and ordered probit models for 340 family AUs. Results indicate that AUs with a lower agrobiodiversity index (IDA) have a higher monthly income (IDA = 0.56, 3...
17
artículo
Publicado 2024
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Permanent hearing loss is common at birth, and the negative consequences for language, cognitive, and social-emotional skills are particularly important. Microtia and congenital aural atresia is a disorder of the external ear that can occur in isolation or in association with another malformation. The objective of the present study was to know and compile the current evidence on microtia and aural atresia. The PubMed, Scopus, and SciELO databases were consulted, from the year 2010 to the year 2023. All the bibliographic references were searched in relation to the keywords: microtia, and aural atresia. Were evaluated review and research articles, which in general, were less than 05 years published. It was limited to articles in Spanish and English and were identified by titles. Were identified once the articles of interest, the following were considered as inclusion criteria: 1. That they...
18
tesis de maestría
Publicado 2021
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El Perú está ubicado en el conocido cinturón de fuego, donde interactúan la placa de nazca bajo la sudamericana, el mismo que se desarrolla con una velocidad promedio de 7-8 cm/año (DeMets et al, 1980; Norabuena et al, 1999), por lo que estamos expuestos a movimientos tectónicos importantes con periodos de recurrencia cortos, terremotos que han causado muchas muertes e ingentes perdidas económicas; Arequipa está ubicada en una zona sísmica. Debido a esta amenaza sísmica es que la innovación tecnológica estructural propone la protección sísmica de las estructuras a través de dispositivos pasivos como aisladores y disipadores de energía visco elásticos, de fricción o metálicos. Estos permiten que las estructuras tengan un mejor comportamiento estructural, desacoplando la estructura del suelo con estos dispositivos reduciendo drásticamente el movimiento sísmico en la su...
19
tesis de maestría
Publicado 2021
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El Perú está ubicado en el conocido cinturón de fuego, donde interactúan la placa de nazca bajo la sudamericana, el mismo que se desarrolla con una velocidad promedio de 7-8 cm/año (DeMets et al, 1980; Norabuena et al, 1999), por lo que estamos expuestos a movimientos tectónicos importantes con periodos de recurrencia cortos, terremotos que han causado muchas muertes e ingentes perdidas económicas; Arequipa está ubicada en una zona sísmica. Debido a esta amenaza sísmica es que la innovación tecnológica estructural propone la protección sísmica de las estructuras a través de dispositivos pasivos como aisladores y disipadores de energía visco elásticos, de fricción o metálicos. Estos permiten que las estructuras tengan un mejor comportamiento estructural, desacoplando la estructura del suelo con estos dispositivos reduciendo drásticamente el movimiento sísmico en la su...
20
tesis de grado
Publicado 2018
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En la presente investigación se trata de establecer las bases teóricas para el diseño estructural e hidráulico una defensa ribereña, en este caso, en el Rio Chicama Tramo desde el Puente San Polo y los Baños Chimú, donde se lleva a cabo el revestimiento de enrocado. Es necesario la propuesta de un Diseño de la defensa ribereña por el alto riesgo de inundaciones que existe en la zona y las pérdidas que se producen son sustantivamente económicas, pues impactan de manera negativa en la economía de los pobladores, (agricultura y ganadería); de transporte, pues produce la obstrucción de caminos y trozas carrozables; en salud por las enfermedades y epidemias que estas producen; siendo que la consecuencia resalta en el atraso y desarrollo de las comunidades cercanas al rio. La colocación del enrocado es importante ya que su estabilidad es función de la trabazón cuando la coloca...
