Tópicos Sugeridos dentro de su búsqueda.
Tópicos Sugeridos dentro de su búsqueda.
1
artículo
Publicado 2025
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This study presents the design exploration and kinematic validation of a transtibial prosthesis based on a 2SPU-RU parallel mechanism. The prototype is currently at Technology Readiness Level 3 (TRL 3), indicating an early-stage concept that has been evaluated under controlled conditions. The mechanism replicates dorsiflexion–plantarflexion, inversion–eversion, and abduction–adduction, corresponding to ankle motion in the sagittal, frontal, and transverse anatomic planes. The system integrates electric actuators and an ESP32 DevKit V1 microcontroller to control joint movements. Functional tests were conducted to assess kinematic performance using inertial sensors and video tracking. Additional evaluations included force distribution analysis using pressure insoles during dorsiflexion and plantarflexion, as well as energy consumption measurements across gait cycles. While the protot...
2
artículo
Publicado 2021
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This study aimed to draw a parallel between instruments assessing marital quality and the way couples conceptualize their relationship quality. Twenty-five couples were interviewed to understand their ideas about a good quality relationship. The interviews were analyzed according to the topics couples presented, which were then compared with the concepts included in the instruments measuring marital quality. Five themes were identified, partially correspondent to the concepts assessed by the instruments. Cultural differences were found in the American instruments regarding the valuation of some themes to the detriment of others. Research with the Latin American population is necessary to understand its particularities and to develop measures in accordance with these specificities.
3
artículo
Publicado 2022
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Introduction: Transversal competences constitute a key element for the academic-professional training and sociolabour insertion of university students. Numerous studies reveal a gap between the level of generic skills and the level demanded by the labor market. The evaluation of these competencies becomes essential in university education, so it is necessary to have valid evaluation tools. Objective: To develop a measurement instrument that effectively evaluates said competencies. Method: a questionnaire has been designed based on the model used by Solanes et al. (2008), using the Delphi method to assess content validity. The test has been administered to 946 students, dividing this sample into four equal subgroups to carry out two parallel analyzes and two confirmatory factor analyzes. Results: The final scale is composed of 38 items that explain 53.1% of the variance, with a McDonald...
4
artículo
Publicado 2022
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Introduction: Transversal competences constitute a key element for the academic-professional training and sociolabour insertion of university students. Numerous studies reveal a gap between the level of generic skills and the level demanded by the labor market. The evaluation of these competencies becomes essential in university education, so it is necessary to have valid evaluation tools. Objective: To develop a measurement instrument that effectively evaluates said competencies. Method: a questionnaire has been designed based on the model used by Solanes et al. (2008), using the Delphi method to assess content validity. The test has been administered to 946 students, dividing this sample into four equal subgroups to carry out two parallel analyzes and two confirmatory factor analyzes. Results: The final scale is composed of 38 items that explain 53.1% of the variance, with a McDonald...
5
artículo
Publicado 2025
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The report addresses the management of parallel processes and synchronization in concurrent systems, highlighting common problems in accessing shared resources that affect efficiency and stability. It also highlights the need to optimize the management of large volumes of data and improve academic cooperation to develop advanced solutions.The objective of the study is to identify and analyze synchronization strategies that optimize parallel processes, evaluating their effectiveness in different scenarios and offering recommendations based on recent literature. A systematic review was conducted using the PRISMA methodology, selecting relevant articles published in the last five years and formulating key questions to guide the analysis. The results highlight that non-blocking strategies are more effective for managing shared resources, and techniques such as the use of mutex and actor mode...
6
artículo
Publicado 2019
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Purpose: Hereditary Breast and Ovarian Cancer (HBOC) syndrome is responsible for ~5–10% of all diagnosed breast and ovarian cancers. Breast cancer is the most common malignancy and the leading cause of cancer-related mortality among women in Latin America (LA). The main objective of this study was to develop a comprehensive understanding of the genomic epidemiology of HBOC throughout the establishment of The Latin American consortium for HBOC-LACAM, consisting of specialists from 5 countries in LA and the description of the genomic results from the first phase of the study. Methods: We have recruited 403 individuals that fulfilled the criteria for HBOC from 11 health institutions of Argentina, Colombia, Guatemala, Mexico and Peru. A pilot cohort of 222 individuals was analyzed by NGS gene panels. One hundred forty-three genes were selected on the basis of their putative role in suscept...
7
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Conventional performance indicators, especially after recent financial restructuring initiatives, are criticized more than ever for not associating performance and risk. The purpose of this study is to benchmark performance of banks in comparison to risk-taking preferences, under different models with data envelopment analysis, to evaluate whether risks are reasonably priced. Comparing a bank’s risk efficiency with its competitors may provide additional insights to regulatory and supervisory authorities together with bank management. The results indicate that profitability of banks is not necessarily parallel with their risk-taking preferences. Banks with low risk efficiency should revise their business style for potential improvements.
8
artículo
Publicado 2008
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At present we observe a vigorous developmental of the cognitive science like a multidisciplinary field that involve several disciplines, such as cognitive psychology, artificial intelligence, linguistics, philosophy, neuroscience, and cognitive anthropology, in order to study the cognition. The study of cognition and mind has been made from a point of view of the speculative philosophy, or from perspective of the philosophy of mind, or from a point of view scientific. The hypothetical and/or theoretical proposals offered from those studies, are discussed and are submitted to experimental analysis, for the purpose to test their scientific validity. Thus, the cognitive science set the essential properties of mind and cognition, such as the representational nature of mind, the causal relation between the cognitive representation and the behavior, the symbolic nature of information mentally ...
9
artículo
Publicado 2008
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At present we observe a vigorous developmental of the cognitive science like a multidisciplinary field that involve several disciplines, such as cognitive psychology, artificial intelligence, linguistics, philosophy, neuroscience, and cognitive anthropology, in order to study the cognition. The study of cognition and mind has been made from a point of view of the speculative philosophy, or from perspective of the philosophy of mind, or from a point of view scientific. The hypothetical and/or theoretical proposals offered from those studies, are discussed and are submitted to experimental analysis, for the purpose to test their scientific validity. Thus, the cognitive science set the essential properties of mind and cognition, such as the representational nature of mind, the causal relation between the cognitive representation and the behavior, the symbolic nature of information mentally ...
10
artículo
Publicado 2025
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Objective: This study analyzes practical, didactic, and evaluative experiences in the context of university professional practice, drawing on the narratives of 47 students (from initial, intermediate, and final internships) and 9 tutor-teachers from two campuses of a state university in southern Chile. Method: Data were collected through discussion groups guided by a thematically validated script and analyzed using structural analysis, applying a parallel structure in the form of binary discourse. Results: The findings show that tutor-teacher supervision promotes dialogic learning and that the emotional dimension is a central component of student–teacher interactions. In addition, the portfolio of evidence emerges as the most widely used didactic and evaluative resource in the training process. Discussion: Student narratives reveal tensions related to the outdated knowledge of some tut...
11
artículo
Emotional perception of COVID-19 in Mexico: Comparative study between phase 1, phase 2 and the media
Publicado 2021
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Background: Since the first COVID-19 cases in Mexico there have been a variety of emotional responses which have in common fear and stress. The emotional impact of COVID-19 is builded in some way because the information flooding parallel to the pandemic phases, the transition between them and illness perception. The aim of the present work was to compare the perception of COVID-19 between phase 1 and 2 of the pandemic and between the information media used to inform themselves in the Mexican population. Methods: Considering a chain sampling, a comparative study was carried out in which an evaluation battery was disseminated through email and social networks, which was answered by 1560 participants. Results: The concern about the consequences of COVID-19 and its emotional impact increased when going from phase 1 to phase 2 of the pandemic. In addition, it was iden...
12
artículo
Publicado 2015
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El Consejo Editorial es un equipo de expertos en el campo de la revista.
13
artículo
Publicado 2018
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Through a systematic review of peer-reviewed and grey literature, this paper analyzes evidence of the livelihood impacts of Payments for Environmental Services (PES). Forty-six studies assessed PES livelihood impacts. The assessments presented more positive livelihood impacts than negative ones, focusing on financial benefits. Non-monetary and non-material impacts of PES were largely understudied. Most reviews focused on ES providers, hindering the understanding of broader societal impacts. The review yielded examples where participants lost from their participation or where improvements in one livelihood dimension paralleled deterioration in another. Consequently, we identified key research gaps in: i) understanding the social and cultural impacts of PES, ii) evaluating environmental and economic additionality from improving other ES at the expense of cultural ones, iii) and assessing P...
14
tesis de grado
Publicado 2023
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[The aim of this study was to determine the physical-mechanical properties of a 20-year-old plantation of the species Calycophyllum spruceanum, known as "capirona" in Peru, due to its potential in wood flooring production. Samples were taken from six trees in a plantation in Curimaná-Ucayali, Peru, and tests were conducted according to ASTM standards (ASTM D 143-94 – 2 000). The results revealed that capirona has a basic density of 0.68 g/cm3, categorizing it as heavy wood, with moderate dimensional stability. Mechanical properties indicated high resistance to bending and parallel compression, and very high resistance to perpendicular compression, hardness, shear, and toughness. According to NTP 251.135.2013, capirona wood was positively evaluated, highlighting its potential for the production of solid wood flooring].
15
artículo
Publicado 2023
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The present study aimed to determine the physical and mechanical properties of a 20-year-old plantation of the species Calycophyllum spruceanum, known in Peru as “capirona,” for its potential for wood flooring production. For this purpose, samples were collected from six trees in a plantation located in the district of Curimaná, department of Ucayali, Peru. Physical and mechanical property tests were conducted following the American Society for Testing and Materials (ASTM) D143-94(2000) standard. The results showed that capirona has a basic density of 0,68 g/cm3, which is considered a heavy wood, and exhibits moderate dimensional stability. The mechanical properties demonstrated that the wood has a high resistance to bending and compression parallel to the grain, and a very high resistance to compression perpendicular to the grain, hardness, shear, and toughness. Based on the Peruvi...
16
artículo
Publicado 2023
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The present study aimed to determine the physical and mechanical properties of a 20-year-old plantation of the species Calycophyllum spruceanum, known in Peru as “capirona,” for its potential for wood flooring production. For this purpose, samples were collected from six trees in a plantation located in the district of Curimaná, department of Ucayali, Peru. Physical and mechanical property tests were conducted following the American Society for Testing and Materials (ASTM) D143-94(2000) standard. The results showed that capirona has a basic density of 0,68 g/cm3, which is considered a heavy wood, and exhibits moderate dimensional stability. The mechanical properties demonstrated that the wood has a high resistance to bending and compression parallel to the grain, and a very high resistance to compression perpendicular to the grain, hardness, shear, and toughness. Based on the Peruvi...
17
tesis de grado
Publicado 2025
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Esta investigación tiene como finalidad mejorar la calidad de los afirmados de los caminos vecinales de la ciudad de Candarave-Tacna, producidos en canteras mediante la “Estabilización de afirmados obtenidos de las canteras Arunta, Cerro Blanco, Hospicio, Miculla y Morán para conformación de Afirmados incrementando los valores referenciales de los parámetros de calidad propuestos por el manual de carreteras EG 2013”. Los estabilizadores seleccionados para el material son la Tierra de Chacra y el estabilizador Z con polímeros. La Tierra de Chacra desempeña un papel crucial al incrementar la proporción de finos en la mezcla de agregados, mientras que el estabilizador Z destaca por sus propiedades que optimizan la cohesión y compactación del material afirmado. Para la estabilización, se seleccionaron muestras de estudio provenientes de canteras con la mejor curva granulométr...
18
tesis de grado
Publicado 2023
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La presente investigación tiene como objetivo evaluar la efectividad del aceite de linaza como preservante natural en elementos estructurales fabricados con madera Tornillo. De manera que pueda utilizarse como una alternativa sostenible para el medio ambiente. Por ello, se realizaron ensayos de densidad básica, contenido de humedad, dureza, flexión y compresión paralela al grano a 3 tipos de muestras: muestras de madera natural sin tratamiento, muestras tratadas con aceite de linaza y muestras tratadas con preservante químico. Los resultados fueron comparados con la Norma E.010 y los resultados obtenidos en estudios previos. Concluyendo que el aceite de linaza ayuda a preservar la madera, formando una delgada película alrededor de la misma, que brinda resistencia a la compresión permitiendo que no aumente su contenido de humedad. Sin embargo, los resultados del ensayo de flexión ...
19
artículo
Publicado 2021
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The work was supported by Fondo Nacional de Desarrollo Cientifico, Tecnologico y de Innovacion Tecnologica, FONDECYT, Peru (N084-2016) to Y. E. C.-S.; the National Institutes of Health (R01-AI87776 and D43-TW010074 to R. H. G. and D43 TW007393 to A. G. L.); and InBios International, Inc to R. H. G. through the Johns Hopkins Bloomberg School of Public Health.
20
artículo
Publicado 2021
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The right to have free access to information is one of the most underlying examples of the first generation of human rights. Also, it is a requirement of realization of citizenship rights and one of the vital issues in the principle of democratic participation discourse. Due to the importance of this issue, the approval of the Law on Dissemination and Free Access to Information in 2009 in Iran can be a vital step toward the achievement of free access to information, transparency, and favorable democracy. The purpose of this study is to explain the challenges and opportunities of the Law on Dissemination and Free Access to Information in Iran. Hence, by referring to scholars in the field of law, formal and natural evaluation of Law on Dissemination and Free Access to Information was done. The method in this study is data-based, and deep interviews are used to analyze the different aspects...
