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Mostrando 1 - 20 Resultados de 201 Para Buscar 'componente ((cred function) OR (based function))*', tiempo de consulta: 1.16s Limitar resultados
1
artículo
Intelligence is a construct of notable impact in our sociocultural context, related to a wide range of conceptual and operational definitions which originate positions that highlights cognitive and abstract elements and emotional and social skills, as well was perspectives that are focused on processes underlying the intelligent performance, such as in the case of executive functions (EFs), which are configured as cognitive processes that make it possible the self-regulation (Miyake & Friedman, 2012). Similarly, there are approaches that give intelligence a relevant and predictive role of school performance, an aspect strengthened by the psychometric perspective, where the concept of intelligence has been closely linked to learning. In this line, we also find the classical perspective of crystallized Intelligence of Cattell (1943), which refers to the knowledge acquired through educa...
2
artículo
The application of different unit root statistics is by now a standard practice in empirical work. Even when it is a practical issue, these statistics have complex nonstandard distributions depending on functionals of certain stochastic processes, and their derivations represent a barrier even for many theoretical econometricians. These derivations are based on rigorous and fundamental statistical tools which are not (very) well known by standard econometricians. This paper aims to fill this gap by explaining in a simple way one of these fundamental tools: namely, the Functional Central Limit Theorem. To this end, this paper analyzes the foundations and applicability of two versions of the Functional Central Limit Theorem within the framework of a unit root with a structural break. Initial attention is focused on the probabilistic structure of the time series to be considered. Thereafter...
3
artículo
El chincho (Tagetes elliptica Sm) es una hierba aromática de la sierra del Perú, normalmente utilizada como aditivo culinario, aparte de esta resaltante propiedad, en algunos casos es utilizada para fines terapéuticos, lo que aparentemente evidencia que posee otras propiedades. Con el fin ampliar la información sobre las propiedades funcionales de esta hortaliza, se planteó investigar los componentes antioxidantes: vitamina C y flavonoides, para ello se plantearon los siguientes objetivos: determinar el contenido de vitamina C (por espectrofotometría), flavonoides 3-hidroxilo en extractos acuoso y etenólico (por espectrofotometría), y el contenido de catequinas en las hojas del chincho (por HPLC). Los resultados fueron: vitamina C igual a 14,49 mg de ácido ascórbico/100g de muestra húmeda; flavonoides 3-hidroxilo igual 39,72 mg de ácido gálico/g de muestra y flavonoides en t...
4
tesis de grado
Microbial action is one of the main causes of food decomposition, causing concern, not only in the area of public health but also in the industry, since it generates large economic losses. This is why packaging is one of the main measures or strategies used to protect products; however, the most used material for this purpose is plastic, which after fulfilling its function is discarded, becoming a serious environmental problem. Therefore, in recent years, edible packaging made from food-grade biopolymers has attracted attention because, in addition to being friendly to the environment, they also allow the incorporation of antimicrobial substances or preservatives, which help to extent the shelf life of food products. To date, nitrites and benzoates have been used as food preservatives; however, they have raised concerns due to the allergic reactions they can cause and the possible format...
5
documento de trabajo
Este documento analiza diferentes estadísticos basados en los residuos para la hipótesis nula de no cointegración utilizando MCG para eliminar los componentes determinísticos. Las distribuciones asintóticas son simuladas para los casos donde un intercepto y un intercepto y una tendencia son incluidos en la ecuación de cointegración. Los resultados muestran que las distribuciones asintóticas dependen del número de regresores (variables xt), el número y clase de componentes determinísticos y un parámtro de nuisamce R2 que mide la correlación de largo plazo entre los regresores xt y la variable yt. Los resultados muestran que MCG permiten obtener más potencia que el uso de MCO. Esto es más claro para valores de R2 menores que 0:4 y un solo regresor xt. Para valores mayores de R2 los denominados estadísticos ECR son mejores para cualquier número de regresores. En particular ...
6
tesis de maestría
Universidad Nacional Agraria La Molina. Escuela de Posgrado. Maestría en Estadística Aplicada
7
tesis de grado
En el presente proyecto se describen los problemas de sujetar y colocar componentes electrónicos SMD en tarjetas PCB cuando se aplica el método convencional. Los componentes SMD pueden estar mal soldados y averiados por consiguiente la PCB es de baja calidad. Los componentes de montaje superficial no deben de ser tocados con la mano, porque ésta podría generar descargas eléctricas al circuito integrado. El tiempo en colocar los componentes SMD de forma correcta en su posición de referencia depende del número de componentes y el tipo de empaquetadura a colocar en la PCB. El presente trabajo se plantea dos propuestas de diseño mecánico. Se diseñó el módulo de succión neumática en el programa SolidWorks y realizó pruebas de estabilidad con función escalón y entradas de posiciones para analizar el comportamiento del en lazo abierto y en lazo cerrado. El primer modelo está d...
8
tesis de grado
Introducción: La esquizofrenia es un trastorno mental complejo que afecta el pensamiento, el comportamiento y el lenguaje, impactando significativamente la comunicación y la interacción social de los pacientes. Las alteraciones del lenguaje en esquizofrenia incluyen dificultades fonológicas, morfosintácticas, semánticas y pragmáticas, las cuales afectan la calidad de vida y la funcionalidad del paciente. Objetivo: Mapear la evidencia existente sobre las alteraciones del lenguaje en pacientes con esquizofrenia en entornos clínicos. Metodología: Estudio de tipo Scoping review, se realizaron búsquedas en las bases de datos Medline, Embase, Google Scholar y SCOPUS. Se incluyeron artículos que cumplieron con los criterios de inclusión y exclusión adecuados, desde el periodo 2001 - 2024. Las pruebas identificadas en los estudios son instrumentos generales del lenguaje, no creados ...
9
artículo
The physicochemical and biological indices have been used in isolation; if the parameters of these indices were applied in an integrated manner, they would bring together in a single measure the functional and structural variability of the biotic and abiotic components of water quality. The aim of this study was to build a comprehensive water quality index. Eleven sampling points were selected considering different degrees of agro-industrial intervention. 21 abiotic variables and 27 biological metrics were measured. Macroinvertebrates were quantitatively collected and identified to family taxonomic level. Using Principal Component Analysis, after standardization and exclusion of uncorrelated variables (VIF ≤ 10), the abiotic gradient was determined, which represented the abiotic variables that explained the disturbances in the water; with the abiotic gradient and the biological metrics...
10
tesis de grado
El enfoque de la investigación es cualitativo y las técnicas que se utilizan son la observación y la entrevista, teniendo como objetivo general analizar las estrategias docentes para el desarrollo del componente pragmático del lenguaje en los niños de cuatro años en una institución educativa estatal del Cercado de Lima, y como objetivos específicos: Describir cómo se trabajan las habilidades no lingüísticas y paralingüísticas, describir cómo se trabajan las funciones comunicativas, y describir cómo se trabaja el discurso conversacional. Este estudio resulta fundamental porque se aborda de manera diferenciada la comunicación, el lenguaje y el habla, y permite comprender las estrategias didácticas que se utilizan para desarrollar el componente pragmático en las interacciones comunicativas cotidianas. Los resultados muestran que las docentes utilizan con poca frecuencia es...
11
tesis de grado
El enfoque de la investigación es cualitativo y las técnicas que se utilizan son la observación y la entrevista, teniendo como objetivo general analizar las estrategias docentes para el desarrollo del componente pragmático del lenguaje en los niños de cuatro años en una institución educativa estatal del Cercado de Lima, y como objetivos específicos: Describir cómo se trabajan las habilidades no lingüísticas y paralingüísticas, describir cómo se trabajan las funciones comunicativas, y describir cómo se trabaja el discurso conversacional. Este estudio resulta fundamental porque se aborda de manera diferenciada la comunicación, el lenguaje y el habla, y permite comprender las estrategias didácticas que se utilizan para desarrollar el componente pragmático en las interacciones comunicativas cotidianas. Los resultados muestran que las docentes utilizan con poca frecuencia es...
12
tesis de grado
Artículo sustentado el 04 de junio 2025 para la obtención del título profesional de Bioingeniera.
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artículo
The fruit of Antidesma bunius has both medicinal and edible properties. In previous studies, the fruit extract of A. bunius showed anti-proliferation activity on breast cancer cells, but its functional components and anti-tumor mechanism are still unclear. In this research, the main active components of A. bunius fruits (detected by UHPLC-MS/MS) and the corresponding targets were analyzed by network pharmacology method, and its interactions were verified by molecular docking to explore the possible tumor suppressor mechanisms. A total of 24 active chemical components were screened from fruits extract of A. bunius,and 44 targets genes were intersected with breast cancer, among them, AKT1, ESR1, EGFR, EP300, ERBB2 and AR were the top core targets.The GO enrichment of target genes mainly involved processes of cellular lipid metabolism, response to hormones, tube development, and KEGG pa...
14
artículo
In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
15
artículo
In this work, maximum flows observed in the Paranapanema river basin are modeled by a mixture of two GEV distributions whose components correspond to the summer and winter subpopulations. The nonlinear discriminant function allowed to confirm the assumption of mixture model.The proposed model is then used to determine probabilities of exceedance and return periods associated with extreme flows, which are of fundamental importance for hydraulic projects. The results show significant differences when a mixture model is used and therefore an approach more coherent with the observed data.
16
artículo
We study the diet and trophic structure of 36 bat species from the Pampa Hermosa National Sanctuary. Faeces samples and gels with pollen were analyzed; seeds, pollen and remains of arthropods were found in the feces. Bats were classified in six functional groups. We found in the diet of the sedentary frugivores (FS), frugivorous nomads (FN) and nectarivores (N), 70 morphospecies of seed and pollen; in the diet of the aerial insectivorous (IA) and foliage gleaners (IR), nine morphospecies of arthropods. Principal component analysis shows the separation of bats and their diets; Carollia brevicauda-Piperaceae (Piper spp.), Vampyressa melissa-Moraceae (Ficus spp.), Sturnira lilium-Solanaceae; Anoura peruana and Anoura cultrata were separated by the consumption of Fabaceae and Bombacaceae, respectively, and Myotis spp. for the consumption of arthropods. The niche breadth was less than 0.50, i...
17
artículo
We study the diet and trophic structure of 36 bat species from the Pampa Hermosa National Sanctuary. Faeces samples and gels with pollen were analyzed; seeds, pollen and remains of arthropods were found in the feces. Bats were classified in six functional groups. We found in the diet of the sedentary frugivores (FS), frugivorous nomads (FN) and nectarivores (N), 70 morphospecies of seed and pollen; in the diet of the aerial insectivorous (IA) and foliage gleaners (IR), nine morphospecies of arthropods. Principal component analysis shows the separation of bats and their diets; Carollia brevicauda-Piperaceae (Piper spp.), Vampyressa melissa-Moraceae (Ficus spp.), Sturnira lilium-Solanaceae; Anoura peruana and Anoura cultrata were separated by the consumption of Fabaceae and Bombacaceae, respectively, and Myotis spp. for the consumption of arthropods. The niche breadth was less than 0.50, i...
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artículo
The following article evidences the importance of considering the concept and the components of the right to the city in the Peruvian legislation. For that purpose, it considers the growing recognition of the importance of cities under the ‘New Urban Agenda’ and the search for assurance of decent life quality for the inhabitants of a city. Moreover, the authors propose to overcome the conception of the city as a physical space where its sole purpose is to produce individual wealth and benefits, for its recognition as a space of interaction and citizen development as a collectivity. Based on this definition, the right to the city implies a guiding principle that seeks to generate spaces for community participation, a fair distribution of urban charges and benefits, and the promotion of active citizenship.
19
tesis de grado
Se elaboró producto alimenticio liofilizado utilizando mezcla de jugos de maracuyá (Passiflora edulis) y camu camu (Myrciaria dubia), frutas tropicales de la amazonia, que aportan componentes bioactivos importantes para el cuerpo humano. Se formularon mezclas de maracuyá/camu camu (v/v: 50/50; 70/30 y 90/10) usando encapsulante 0,2% CMC y 1,5% Goma arábiga, se formaron cubos de 1,5 cm de espesor congelados a -24°C/24 horas y secados en un liofilizador a 0,2 y 165 Pa durante 24 horas. Se determinaron las propiedades fisicoquímicas del jugo y en polvo liofilizado, como color, polifenoles totales y vitamina C. Los resultados indican 15 °Brix, 74,61 mgAG/ml y 24,55 mgAA/ml (vitamina C) en jugo maracuyá; 6 °Brix, 622,88 mgAG/ml y 2714,10 mgAA/ml (vitamina C) en jugo camu camu, lo que confirma una ligera sinergia en la mezcla de jugos 50/50 y en polvo liofilizado con 0,2% CMC a una pr...
20
artículo
Currently there is a great demand for food products containing functional properties and/or bioactive compounds. One of the fruits that has been widely studied is the murta (Ugni molinae), which appears to contain various beneficial health properties. This review compiles scientific information on the functional and beneficial properties of murta for human health, such as the main components associated with anti-inflammatory activity, antimicrobial activity, antioxidant activity, nutritional composition, other uses of murta, economic aspects, and current and future challenges of murta, all based on updated scientific work.