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1
tesis de grado
Publicado 2023
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The development of this thesis work consists on obtaining the NARMAX model of the dynamic behavior of the end-effector position of a robotic manipulator of three degrees of freedom by means of a parametric identification process. for this experimental data of the angular position of each of the joints is obtained after being excited with a certain signal, from the angular position data and the direct kinematic we obteined the end-effector position of the robotic manipulator, after obtaining the experimental data, we proceeded to select the elements of the structure of our parametric model, once the elements of the structure of the model have been selected, the coefficients of these elements were estimated to end with the validation of the model obtained. For the execution of the experimental tests a robotic manipulator of three degrees of freedom was implemented, which is made up of thre...
2
artículo
In this paper, we study the differential geometry of the transversal intersection curve of two surfaces in Minkowski 3-space, where each pair satisfies the following types spacelike-lightlike, timelike-lightlike and lightlike-lightlike. Surfaces are generally give by their parametric or implicit equations, then the surfacesurface intersection problem appear commonly as parametric-parametric, parametric-implicit and implicitimplicit.We derive the Frenet frame, Darboux frame, curvature, torsion, normal curvature and geodesic curvatures of transversal intersections for all types of intersection problems. We show the intersection curve may be spacelike (timelike, lightlike or pseudo null) curve. Finally, we show our methods by given several examples.
3
artículo
In this paper, we study the differential geometry of the transversal intersection curve of two surfaces in Minkowski 3-space, where each pair satisfies the following types spacelike-lightlike, timelike-lightlike and lightlike-lightlike. Surfaces are generally give by their parametric or implicit equations, then the surfacesurface intersection problem appear commonly as parametric-parametric, parametric-implicit and implicitimplicit.We derive the Frenet frame, Darboux frame, curvature, torsion, normal curvature and geodesic curvatures of transversal intersections for all types of intersection problems. We show the intersection curve may be spacelike (timelike, lightlike or pseudo null) curve. Finally, we show our methods by given several examples.
4
artículo
Publicado 2011
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Introduction: Data envelopment analysis (DEA) helps determining which of the regional hospitals have better relative performance and which could improve the use of resources. Objectives: To analyze, using data envelopment analysis (DEA), hospitals technical efficiency in Chile. Design: Non parametric analysis. Setting: Chile’s Regional Public Hospitals. Interventions: Application of DEA to determine the efficiency of health establishments. Materials: Data for the period 1997-2006 of 190 public hospitals of different levels of expertise of the twelve regions of the country and the Metropolitan Region. Hospital and medical staff activity data have been identified -doctors, nurses, midwives, beds available as inputs and hospital discharge as output. Main outcome measures: Hospitals efficiency. Results: In 1997 regions IV, VII, VIII and IX hospitals were classified as technically efficient...
5
tesis doctoral
Publicado 2025
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The objective was to determine the effect of MindMaster software in the design of the Ishikawa diagram with students of Social Sciences, developed through an experimental methodology of quasi-experimental type with two groups, one experimental and one control, where we sought to find the effect of MindMaster software in the design of the Ishikawa diagram, variables that were studied in a population of 186 students of the Social Sciences career of the Faculty of Education Sciences and Humanities - UNAP, being the non-probabilistic intentional sample where all the students of 4th level were chosen, which were 46 students to whom the technique of the survey and the direct observation were applied, applying a questionnaire and a data collection sheet, arriving at the following results: with non-parametric statistical test of U-Mann Whitney, it was observed that the values of bilateral signif...
6
artículo
Publicado 2024
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Introduction. The metaverse is a construction of universes operated in digital environments where users connect to alternate realities on an identity platform through avatars that reflect their appearance, physical movements, body and facial expressions. Objective. To identify teachers’ knowledge about the metaverse and propose pedagogical strategies that support its incorporation into the thematic content of the subjects. Method. 68 teachers working in higher education institutions between 36 and 55 years of age participated. A non-parametric test (Chi-Square) was applied to identify possible relationships between the variable Knowledge of the Metaverse and the activities of teachers on technological trends, adaptation and learning dynamics on artificial intelligence of students. Results. It was identified that only 46 % of the teaching staff knows what the Metaverse is and that non-p...
7
artículo
Publicado 2024
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Introduction. The metaverse is a construction of universes operated in digital environments where users connect to alternate realities on an identity platform through avatars that reflect their appearance, physical movements, body and facial expressions. Objective. To identify teachers’ knowledge about the metaverse and propose pedagogical strategies that support its incorporation into the thematic content of the subjects. Method. 68 teachers working in higher education institutions between 36 and 55 years of age participated. A non-parametric test (Chi-Square) was applied to identify possible relationships between the variable Knowledge of the Metaverse and the activities of teachers on technological trends, adaptation and learning dynamics on artificial intelligence of students. Results. It was identified that only 46 % of the teaching staff knows what the Metaverse is and that non-p...
8
artículo
Publicado 2018
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Objective. To identify the factors related to the non-adherence of the consumption of multimicronutrients (MMN) sprinkles in mothers of children from 6 to 36 months, users of the Carlos Showing Ferrari Health Center, Amarilis in Huánuco. Methods. It was a cross-sectional, analytical, and observational study. The population was 101 mothers, the selected sample was 41 mothers of children from 6 to 36 months; to whom an interview guide was applied, a questionnaire of the adherence of the consumption of MNN; and the factors of non-adherence; these instruments were valid and reliable. The non-parametric chisquare test was applied, with OR and a p <0.05. Results. When analyzing the adherence to the consumption of sparkling MNN, only 48% (20) of the sample were adherents. In social factors, non-dedication exclusively to the care of your child, in attitudinal factors "if the child had a resp...
9
artículo
Introduction: The changes in the academic life of graduate students due to the pandemic generated complex socioemotional processes that need to be explored. Objective: to compare the socioemotional processes in graduate students during the closure of universities according to the area of knowledge and sex. Method: exploratory-descriptive-comparative quantitative study with a cross-sectional design. A total of 119 questionnaires were analyzed using the Mann-Whitney U non-parametric statistical test to determine significant differences in the independent variables. Results: Significant differences were identified before and during the pandemic in prosocial emotions and mood affectations in both groups of students due to the overload of academic-work activities and the differentiated conditions by area. Women in area 2 were more affected. Discussion: the socio-structural and situational con...
10
artículo
Introduction: The changes in the academic life of graduate students due to the pandemic generated complex socioemotional processes that need to be explored. Objective: to compare the socioemotional processes in graduate students during the closure of universities according to the area of knowledge and sex. Method: exploratory-descriptive-comparative quantitative study with a cross-sectional design. A total of 119 questionnaires were analyzed using the Mann-Whitney U non-parametric statistical test to determine significant differences in the independent variables. Results: Significant differences were identified before and during the pandemic in prosocial emotions and mood affectations in both groups of students due to the overload of academic-work activities and the differentiated conditions by area. Women in area 2 were more affected. Discussion: the socio-structural and situational con...
11
artículo
Publicado 2022
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En este artículo se profundiza el impacto de las Tecnologías de Información y Comunicación (TIC) como innovación pedagógica y tecnológica en el aprendizaje del cálculo I, en estudiantes de Ingeniería Civil de la Universidad Nacional de San Cristóbal de Huamanga, 2020. Para ello, se aborda una investigación aplicada, nivel de investigación explicativa de diseño experimental con pre y postest, método inductivo analítico, se estableció una muestra de 31 estudiantes, los datos fueron recogidos a través de encuesta y prueba pedagógica virtual, haciendo uso las bondades de las TIC; se aplicó la prueba paramétrica t de Student de muestras independientes ordinal para la prueba de hipótesis con un nivel de confianza de 95% y significancia 5%. Consiguiendo resultado del estadístico t de Student t=6.389 y p=0.00 < 0.05. En consecuencia, se demuestra la diferencia significat...
12
artículo
Publicado 2022
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This article deepens the impact of Information and Communication Technologies (ICT) as pedagogical and technological innovation in calculus I learning, in Civil Engineering students at San Cristóbal de Huamanga, National University 2020. For this, it is It addresses an applied research, explanatory research level of experimental design with pre and post-test, analytical inductive method, a sample of 31 students was established, the data was collected through a survey and virtual pedagogical test, making use of the benefits of ICT; The parametric Student t test of ordinal independent samples was applied for the hypothesis test with a confidence level of 95% and significance 5%. Obtaining the result of the Student's t statistic t = 6.389 and p = 0.00 <0.05. Consequently, the significant difference with respect to the pretest is demonstrated, so that a higher percentage of the students ...
13
tesis doctoral
Publicado 2021
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The objective of this research was to determine the relationship between organizational values and job performance in workers at BANCO INTERBANK, Plaza Iquitos, period 2018. The research is descriptive, correlational, not experimental; the population was 34 workers and the sample was non-randomly and for convenience, and is formed of all the entire population because it is very small. The technique used was the survey and the instruments were two questionnaires elaborated with 36 questions, which allowed to identify six components in the organizational values: (1) sense of humor, (2) passion for the client, (3) innovation, (4) collaboration, (5) integrity and (6) courage and three components in job performance: (1) quality and productivity, (2) knowledge and (3) teamwork. The data processing was done with the help of the SPSS version 23 statistical program, which allowed the selection, s...
14
artículo
Publicado 2022
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The objective was to determine the effect of an educational intervention on the level of oral health knowledge in primary school teachers in the district of Huayrapata - Puno, Peru. Methodology: The research approach was mixed, the pre-experimental, longitudinal, and prospective designs. The sample consisted of 32 teachers from eight educational institutions selected as non-probabilistic for convenience considering the sample selection criteria. The study was carried out in three periods. First, a questionnaire of 18 questions was applied to teachers to determine the level of knowledge about preventive measures, main oral diseases, and dental development. Subsequently, the educational intervention was carried out, which consisted of didactic training with images and videos for teachers. Finally, the teachers were evaluated with the same 18-question questionnaire. The levels of knowledg...
15
artículo
Publicado 2025
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Objective: To compare in vitro the mechanical properties and depth of cure of bioactive bulk-fill resins versus bulk-fill composite resins. Materials and methods: An in vitro experimental study was conducted with 48 blocks of three types of resin. Each block received a load of 500 g for 30 seconds and was photopolymerized with a VALO® Cordless-Ultradent unit (1500 mW/cm2) for 4 seconds. Microhardness was evaluated using the Vickers hardness test, employing a calibrated LG® HV-1000 hardness tester. For statistical analysis, the Student's t-test and the non-parametric Kruskal-Wallis test were applied, considering statistical significance if p < 0.05. Results: The bioactive resin Beautifil® Bulk (BB) showed the highest microhardness, reaching a mean value of 55.1 VH (p < 0.01), followed by the resins Tetric® N-Ceram Bulk Fill (TNCBF) with 44.9 VH and Tetric® N-Flow Bulk Fill (TNF...
16
artículo
Publicado 2016
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El objetivo de éste estudio fue estudiar la composición y distribución espacial de cuatro órdenes de insectos acuáticos Ephemeroptera, Plecoptera, Trichoptera y Coleoptera (EPTC), en una quebrada de primer orden, Chanchamayo, Perú. Se realizaron colectas bimensuales desde marzo del 2013 a enero del 2014 en cuatro microhábitats lóticos: piedra, grava, musgo y hojas retenidas en la corriente. Fueron colectados un total de 7825 individuos agrupados en 51 géneros distribuidos en 27 familias de EPTC. El microhábitat de hoja retenida en los rápidos presentó la mayor abundancia, riqueza y diversidad de EPTC. Los géneros más representativos en términos de abundancia fueron Farrodes (10.35%), Phylloicus (10.01%) y Heterelmis (6.07%). La familia Elmidae fue la más diversa con 11 géneros. Las pruebas no parametricas de Kruskall-Wallis para riqueza, abundancia, diversidad y equidad ...
17
artículo
Publicado 2016
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The aim of this paper was to study the composition and spatial distribution of four orders of aquatic insects Ephemeroptera, Plecoptera, Trichoptera and Coleoptera (EPTC) in a first order stream, Chanchamayo, Peru. Sampling was done bimonthly from March 2013 to January 2014 in four lotic microhabitats: stones, gravel, moss and leaf litter from rifles. There were collected 7825 individuals grouped in 51 genera distributed in 27 families of EPTC, being the first records of aquatic insects in a first order stream of a Montane Forest in the Peruvian Central Andes. The microhabitat litter from rifles presented the highest abundance, richness and diversity. The most representative genera in terms of abundance throughout the basin were Farrodes (10.35%), Phylloicus (10.01%) and Heterelmis (6.07%). The family Elmidae was the most diverse with 11 genera. The non-parametric statistical test of Kru...
18
tesis de grado
Publicado 2020
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La reportabilidad de 1,356 incidentes por los colaboradores de la organización Semaint S.R.L., genera un problema de evaluación de los niveles de riesgo, que mantiene una desviación estándar o estadística y existe la necesidad de diseñar y evaluar nuevo formato RACS para corregir la evaluación y construir una relación no paramétrica del nivel de riesgo alto con el tipo de incidentes en las actividades de fabricación, montaje y mantenimiento mecánico de infraestructura minera de la empresa Semaint S.R.L., en un diseño no experimental, transeccional, correlacional, con el método inductivo; para obtener los resultados fue necesario diseñar e implantar nuevo formato de reporte RACS e insertar en él una matriz de riesgos, para establecer las correlaciones estadísticas no paramétricas entre el nivel de riesgos y el tipo de incidentes hallando así la causa raíz del problema. ...
19
tesis doctoral
Publicado 2021
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The Amazonian forests are considered one of the largest carbon sinks, however, there is little information on the carbon stock in them. This information would be very important to assess the CO2 sequestration environmental service and offer it on the carbon market. The objective of this study was to quantify the biomass and carbon stock of low-terrace, mid-terrace and low-hill forests located in the Loreto region, Peru. The results show that the low-terrace forest contains a total carbon stock of 11 088,88 tC and 8,28 tC/ha, where V. albidiflora contains the highest carbon stock of 1512,24 tC and 1,13 tC/ha and the diameter class from 60 cm to 69 cm contains the largest carbon stock of 2371,78 tC and 1.77 tC/ha; in the mid-terrace forest a total of 2834,07 tC and 157,45 tC / ha are reported, where E. alvidiflora contains the highest carbon stock of 302,04 tC and 16,78 tC / ha and the dia...
20
artículo
Publicado 2020
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The objective of the study was to determine the bacteriological quality of water for human consumption and the acute diarrheal disease, in the district of Rázuri. Province of Ascope. Department of La Libertad - Peru. Depending on the type of research is applied and quantitative. Method: prospective study, statistical, interpretative, documentary and judgmental. With a quasi-experimental design with longitudinal cut. The samples of water were collected from 14 localities in 03 sampling points: In well, in reservoir and public network; and microbiological analyzes of water were assessment by the laboratory of the Office of Environmental Health of the sub management of the promotion of the Territorial Management - GERESA / LL. For the determination of acute diarrheal disease (ADD) the data are taken from the record of medical consultations of the Health Center of Rázuri - MINSA and Loggin...
