Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
1
objeto de conferencia
Publicado 2017
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In this paper, we have performed a closed-form calculation of the radiation pattern of a base station antenna by using Ad Hoc Bessel-Fourier expansion. Once the coordinates system is fixed, we proceed to derived the magnetic potential vector underlining the complex part which is subsequently expanded in a Bessel-Fourier series. Since the radiation intensity is proportional to the square of the polar component of electric field, we used the well-known relation vec{E} \approx \vec{\nabla}\times \vec{\nabla} \times \vec{A} It gives capabilities to apply antenna data to the resulting closed-form expression for obtaining numerical estimations of the possible exposure levels. For this end, we measured the specific absorption radiation (SAR) to evaluate and discard possible effects of contamination by antenna radiation in the vicinity of the emission source. For a source of 2.0 GHz and 1.5 Vm-1...
2
artículo
Publicado 2021
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Intercultural communication is considered a progressively developing trend, both abroad and in modern Russia. The concept of Western research on this topic is interdisciplinary approaches this situation is conditioned by the need for a multilateral analysis of the processes taking place in this field. Attention is focused on studying the barriers to communication of representatives of many socio-cultural systems. The information reflects the experience of using Western methodology to analyze the problems of intercultural interaction. The main barriers that reduce the effectiveness of interactions are the differences in cognitive schemes that are relevant for representatives of certain cultures (in particular linguistic and non-verbal schemes, moments of public consciousness). The results of the study do not allow the dissemination of conclusions to an extremely broad social context. But ...
3
artículo
Publicado 2021
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Intercultural communication is considered a progressively developing trend, both abroad and in modern Russia. The concept of Western research on this topic is interdisciplinary approaches this situation is conditioned by the need for a multilateral analysis of the processes taking place in this field. Attention is focused on studying the barriers to communication of representatives of many socio-cultural systems. The information reflects the experience of using Western methodology to analyze the problems of intercultural interaction. The main barriers that reduce the effectiveness of interactions are the differences in cognitive schemes that are relevant for representatives of certain cultures (in particular linguistic and non-verbal schemes, moments of public consciousness). The results of the study do not allow the dissemination of conclusions to an extremely broad social context. But ...
4
artículo
Concern for the quality of software-based systems has grown as software is integrated into every aspect of our lives. With the increase in the number of users and the data stored, more robust and secure databases are necessary. Quality control testing has progressed systematically from manual to automated applications. The Information Technology for Defense Company has the Center for Quality Standards and Security in charge of certifying and technically evaluating computer products, guaranteeing their quality. Currently the database review process in the SQLite manager is manual, making this process difficult, where there may be a margin of error due to the amount of checks that must be reviewed. The present work aims to develop a data architecture review component for the SQLite management server. For this, a study of a homologous database management system is carried out, the tools for...
5
artículo
Publicado 2025
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Purple corn (Zea mays L.) is a superfood native to Peru, highly regarded for its functional properties and commonly used in the preparation of traditional beverages and desserts, such as chicha morada and mazamorra morada. Following processing, the corn cobs remaining as a byproduct retain significant amounts of bioactive compounds with potential for utilization. This study proposes their use as a primary component in the production of teas. To ensure product safety, the moisture content, total ash, and counts of enterobacteria and aflatoxins in the raw materials were first evaluated. Fourteen formulations were developed, varying in the proportions of corn cobs, quince, stevia, cinnamon, and cloves, as well as extraction times (5 and 10 minutes at 100 °C) with hot water. Two rapid sensory evaluation methods using consumer panels were applied sequentially: Flash Profile (FP) and Check-...
6
objeto de conferencia
Publicado 2017
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The present study proposes a method of automatic detection of tuberculosis (TB) bacilli from digital images of Ziehl Neelsen sputum smear baciloscopy. The method is based on an algorithm that aims to automate the interpretation of optical microscopic images of sputum smears. According to the World Health Organization (WHO), a specialist can not analyze and process more than 20 samples per day (in order to not affect the analysis sensitivity and commit errors in diagnosis). Therefore, an automated tool as the proposed here, is an important contribution to the current efforts to fight tuberculosis. The algorithm is based on geometric eccentricity of ellipses and improvement of RGB component tones. Correspondence functions adjusted to sample preparation conditions were applied in order to improve the RGB primary component tones of the image. This allows to obtain an adequate segmentation of...
7
artículo
Publicado 2009
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The chincho (Tagetes elliptica Sm) is an aromatic grass of the mountain range of Peru, normally is used as culinary additive, apart from this curious property, in some cases it is used for therapeut i c aims, whi ch apparent l y demonstrates it possesses other properties. With the aim to extend the information on the functional properties of this vegetable, it was proposed to investigate the antioxidant components: vitamin C and flavonoids, therefore it was proposed the following aims: determine the content of vitamin C (for espectrofotometría), flavonoids 3-hidroxilo in aqueous extracts and etenólico (for espectrofotometría), and the content of catequinas in the leaves of chincho (for HPLC). The results were: Vitamin C is equal to 14,49 mg of ascorbic acid /100g of humid sample; Flavonoids 3-hidroxilo is equal 39,72 mg of galic acid/g of sample and Flavonoids in terms of catequinas i...
8
artículo
Publicado 2024
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Este texto presenta una reflexión teórica de la teoría de la mente (ToM) y su configuración en la adultez, así como un abordaje de las evidencias respecto a sus componentes, tanto en la infancia como en la adultez, lo que involucra pensar que la habilidad de inferir estados mentales de los demás se manifiesta de manera cualitativamente diferente en la infancia y en la adultez. Se presentan evidencias alrededor de las bases neurocientíficas de la ToM y se termina explorando diferentes enfoques teóricos, en particular el enfoque ejecutivo, que aborda la teoría de la mente como una función ejecutiva (FE). Se concluye indicando que la evidencia señala que si bien la FE es necesaria para la configuración de la ToM no es suficiente para un adecuado desempeño mentalista.
9
artículo
Publicado 2019
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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...
10
artículo
Publicado 2021
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Introduction: The article examines the problem of psychomotor development of preschool children with intellectual disabilities. The researched problem affects learning, upbringing, and socialization of children of said category and its resolution requires implication of not only traditional but also non-traditional tools including correctional eurhythmics. The goal of the study is to develop the organizational and methodical basis for the development of psychomotor functions in preschool children with intellectual disabilities through the means of musical rhythmic exercises.Materials and methods: The basis of the research is formed by general scientific cognition methods: analysis, synthesis, comparison, generalization; pedagogical experiment (ascertaining, forming, control), and empirical data analysis. The data acquired in the course of the study were processed in Excel via the methods...
11
artículo
Publicado 2021
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Introduction: The article examines the problem of psychomotor development of preschool children with intellectual disabilities. The researched problem affects learning, upbringing, and socialization of children of said category and its resolution requires implication of not only traditional but also non-traditional tools including correctional eurhythmics. The goal of the study is to develop the organizational and methodical basis for the development of psychomotor functions in preschool children with intellectual disabilities through the means of musical rhythmic exercises.Materials and methods: The basis of the research is formed by general scientific cognition methods: analysis, synthesis, comparison, generalization; pedagogical experiment (ascertaining, forming, control), and empirical data analysis. The data acquired in the course of the study were processed in Excel via the methods...
12
artículo
Publicado 2020
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Two commercial varieties of Peruvian Pouteria lucuma fruits namely “Seda” and “Beltrán” were characterized in terms of their physicochemical properties as well as their primary and secondary metabolites content and profile. Free sugars, dietary fiber, and starch comprise the main components in both varieties. Phenolic compounds derived from flavanoids (flavan-3-ols), gallic acid, and their derivatives were identified. Xanthophylls were tentatively identified based on their UV-vis spectra and enclosed the majority of the carotenoids found in lucuma. Additionally, both varieties showed to be sources of lipophilic compounds such as tocopherols (?, ?, and ?) and triterpenoids. The triterpenoid ?-amyrin was identified in a Pouteria fruit for the first time. The in vitro antioxidant capacity (AoxC) of the lipophilic fraction represented approximately 30% of the total AoxC. These resul...
13
artículo
Publicado 2019
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The mechanical behavior of advanced composites can be modeled mathematically through unknown variables and Shear Strain Thickness Functions (SSTFs). Such SSTFs can be of polynomial or non-polynomial nature and some parameters of non-polynomial SSTFs can be optimized to get optimal results. In this paper, these parameters are called “r” and “s” and they are the argument of the trigonometric SSTFs introduced within the Carrera Unified Formulation (CUF). The Equivalent Single Layer (ESL) governing equations are obtained by employing the Principle of Virtual Displacement (PVD) and are solved using Navier method solution. Furthermore, trigonometric expansion with Murakami theory was implemented in order to reproduce the Zig-Zag effects which are important for multilayer structures. Several combinations of optimization parameters are evaluated and selected by different criteria of aver...
14
artículo
Publicado 2024
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The soil microbiome, a crucial component of agricultural ecosystems, plays a pivotal role in crop production and ecosystem functioning. However, its response to traditional tillage systems in potato cultivation in the Peruvian highlands is still far from understood. Here, ecological and functional aspects of the bacterial community were analyzed based on soil samples from two traditional tillage systems: 'chiwa' (minimal tillage) and 'barbecho' (full tillage), in the Huanuco region of the Peruvian central Andes. Similar soil bacterial community composition was shown for minimal tillage system, but it was heterogeneous for full tillage system. This soil bacterial community composition under full tillage system may be attributed to stochastic, and a more dynamic environment within this tillage system. 'Chiwa' and 'barbecho' soils harbored distinct bacterial genera into their communities, i...
15
artículo
Publicado 2015
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Myrciaria dubia is an Amazonian fruit shrub that produces numerous bioactive phytochemicals, but is best known by its high L-ascorbic acid (AsA) content in fruits. Pronounced variation in AsA content has been observed both within and among individuals, but the genetic factors responsible for this variation are largely unknown. The goals of this research, therefore, were to assemble, characterize, and annotate the fruit transcriptome of M. dubia in order to reconstruct metabolic pathways and determine if multiple pathways contribute to AsA biosynthesis.RESULTS: In total 24,551,882 high-quality sequence reads were de novo assembled into 70,048 unigenes (mean length = 1150 bp, N50 = 1775 bp). Assembled sequences were annotated using BLASTX against public databases such as TAIR, GR-protein, FB, MGI, RGD, ZFIN, SGN, WB, TIGR_CMR, and JCVI-CMR with 75.2 % of unigenes having annotations. Of the...
16
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 ...
17
Publicado 2021
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El objetivo de este trabajo de investigación fue la definición de un conjunto básico de datos primitivos (enteros, reales, de caracteres y lógicos). Cuando agrupamos estos datos, formamos una estructura. Esta agrupación puede resultar en vectores (matrices unidimensionales), matrices (con más de una dimensión) o registros. El estudio de las estructuras de datos es necesario para que podamos identificar y desarrollar modelos matemáticos que resuelvan problemas abstractos, así como la resolución de problemas prácticos que involucren estructuras de datos. El enfoque de la base de datos tiene ventajas en comparación con el procesamiento de archivos tradicional, entre los que se encuentran la independencia, la integridad y la coherencia de los datos, así como el control de la redundancia. Un esquema de base de datos se refiere a la estructura de la base de datos. Los esquemas se ...
18
artículo
Publicado 2022
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“The objective of the research was to evaluate the consistency of different training proposals, proposing as a reference a competency-based curriculum planning model. Qualitative methodology was used from an interpretive paradigm, making use of inductive and deductive analysis at the same time. Inductively, observations were generated through documentary analysis, interviews with experts, and a focus group with university professors, who then deductively derived interpretations and forecasts regarding curricular planning. As a result, it was obtained that the designed model, based on the triangulation of the information collected, allowed evaluating and determining the strengths and weaknesses of the priority elements of the university curriculum: the graduation profile, the study plan and the evaluation system. The main conclusion was that it is necessary to have clear parameters for ...
19
artículo
Publicado 2022
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“The objective of the research was to evaluate the consistency of different training proposals, proposing as a reference a competency-based curriculum planning model. Qualitative methodology was used from an interpretive paradigm, making use of inductive and deductive analysis at the same time. Inductively, observations were generated through documentary analysis, interviews with experts, and a focus group with university professors, who then deductively derived interpretations and forecasts regarding curricular planning. As a result, it was obtained that the designed model, based on the triangulation of the information collected, allowed evaluating and determining the strengths and weaknesses of the priority elements of the university curriculum: the graduation profile, the study plan and the evaluation system. The main conclusion was that it is necessary to have clear parameters for ...
20
artículo
Publicado 2016
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This paper involves a practical approach to perform quality-control/quality-assessment of concrete using vibration-based NDT. The first component is the analysis of compressive strength and dynamic E-modulus of concrete samples from various construction projects. The second component involves continuous measurements of E-Moduli as a function of curing time in laboratory-controlled specimens. The experimental program allowed proposing a correlation to predict the expected static and dynamic E-modulus at 28 days from their measurement at any instant of the curing process. A similar relationship is proposed to predict compressive strength at 28 days based on the dynamic E-modulus measured at earlier ages.
