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1
objeto de conferencia
Publicado 2017
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Aunque las señales electromiográficas superficiales son la señal de entrada más común para los algoritmos de aprendizaje automático en aplicaciones de reconocimiento de gestos de la mano y estimación de la fuerza del dedo, sólo hay unos pocos sistemas disponibles comercialmente para la adquisición de EMG superficial. Este trabajo propone una matriz de electrodos superficiales seca, barata y fácil de fabricar. Este sistema utiliza múltiples sensores diferenciales activos integrados en una pequeña placa de circuito impreso de doble capa, cada uno de los cuales utiliza dos pequeñas áreas rectangulares de la capa inferior como capa conductora para la adquisición de la señal. Con una ganancia diferencial de 60dB entre 23 y 3000Hz y una relación de rechazo de modo común de -60dB a 60Hz. Se presentan los criterios de diseño y las simulaciones.
2
artículo
Paprika’s export requires optimization in terms of drying, to be competitive. The research achieved the construction of a commercial dryer 25 0kg and 1000 kg industrial, after experiencing different conditions without exceeding temperatures that can damage the labile elements, We can provide information on the importance of automation in the process of drying paprika export in Arequipa region through the accumulation of solar energy in solar collectors industrial dryers paprika. The determining parameters of the process are speed, temperature and relative humidity, moisture product also sun light, while commissioning of centrifugal fans, down time for centrifugal fans proper control and optimization in the drying process. The results were cut losses capsinas carotenoids and 10% and reduce the cost of drying 0.9 kg of dried soles pepper exportersincreasing income.
3
artículo
Publicado 2010
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The present work propose the replacement of the three stages of the activation process of bentonite with sulfuric acid by the only stage spray drying.
4
artículo
Publicado 2010
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The present work propose the replacement of the three stages of the activation process of bentonite with sulfuric acid by the only stage spray drying.
5
artículo
Publicado 2012
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El presente trabajo presenta el estudio experimental sobre el secado por atomización con el objetivo de que tal operación reemplace las tres últimas etapas del proceso de fabricación de la bentonita activada como son: filtro rotatorio continuo al vacío, secador de horno rotatorio y el molino Raymond. Se ha logrado demostrar experimentalmente que con el secado por atomización se logra un producto que tiene un 10% de humedad y que el 100% del producto pasa la malla 200 Tyler, superando ampliamente las especificaciones comerciales de la bentonita activada.
6
artículo
Publicado 2014
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This article seeks to be a source of knowledge and help students and teachers, from the synthesis of the personal college student’s experience in developing their learning to the teaching of natural sciences at the secondary level. In addition, during the development of this article, there are some of the advantages and limitations encountered at this stage of studies contrasted with the reality of education in our country, and it provides a global vision and a neutral point of view about the problems faced by many students during the university life, which often has not been able to be transmitted in its entirety, however, through this document it seeks to break these patterns and improve communication between the authorities and students.
7
artículo
Publicado 2014
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The study of Neuroscience and The seven Learnings introduce Neuroscience as the new paradigm that enables to analyze and explain the intelligent human behavior. The discoveries found in this field have been shown not only in the theory but in the pedagogical practice as well. In the first case, one of the most recent theories about intelligent behavior has been conceived from the perspective of neuroscience (science that studies HUMAN BRAIN). (Beauport and Diaz, 1994) This study has given more relevance to the relation between the function of the brain and human behavior as well as the conditions that lead to an efficient teaching – learning process. In this context, we introduce The seven Learnings, described by Edgar Morin that state central problems which have been ignored and that are necessary in order to reach a successful teachinglearning process in this century. These seven Lea...
8
artículo
Publicado 2024
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Beef aging is a process that involves the interaction of enzymes and chemical transformations that directly influence changes in flavor and texture, which in turn can determine the sensory experience for guests. The purpose of this study was to compare, in terms of texture, the aging of beef brisket cuts through two techniques: with animal fat coating and dry aging, over a period of 21 days, and to determine the acceptability of end consumers. The cuts were stored under controlled temperature and moisture conditions (2 °C and 60 % relative moisture, respectively), with continuous monitoring to ensure food safety. Finally, they were cut into 2 cm thick steaks, fried to medium doneness with salt, and sensorially evaluated by a panel of 27 individuals. The results revealed an acceptance rate of 74.1 % for the meat sample aged with animal fat, surpassing the dry-aged sample (22.3 %) and the...
9
artículo
Publicado 2024
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Beef aging is a process that involves the interaction of enzymes and chemical transformations that directly influence changes in flavor and texture, which in turn can determine the sensory experience for guests. The purpose of this study was to compare, in terms of texture, the aging of beef brisket cuts through two techniques: with animal fat coating and dry aging, over a period of 21 days, and to determine the acceptability of end consumers. The cuts were stored under controlled temperature and moisture conditions (2 °C and 60 % relative moisture, respectively), with continuous monitoring to ensure food safety. Finally, they were cut into 2 cm thick steaks, fried to medium doneness with salt, and sensorially evaluated by a panel of 27 individuals. The results revealed an acceptance rate of 74.1 % for the meat sample aged with animal fat, surpassing the dry-aged sample (22.3 %) and the...
10
artículo
Publicado 2017
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Cocoa in grain is a tropical fruit considered as a heritage in Ecuador and constitutes 60% of the premium quality in chocolates worldwide, has sensory characteristics unmatched by other producing countries. Manual drying and selection activities contain many occupational hazards, affecting the safety and well-being of the people involved in these tasks, with the ergonomic risk of an intolerable level requiring immediate intervention. This research provides safe automated mechanisms for operations through internationally validated methodologies, without affecting the sensory characteristics.
11
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...
12
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...
13
artículo
The objective of the research work was to propose a teaching method that allowed the self-management of knowledge related to the zoology of invertebrates by the students of the 3rd year of the Bachelor of Education career, comparing in-person learning vs. those not in attendance. For the development of the research, information gathering and processing methods were used, which allowed us to verify the shortcomings in terms of the use and elaboration of this type of teaching medium, for the teaching-learning process from the non-face-to-face modality. The illustrations were made to correspond with the pedagogical and hygienic requirements, which contributed to the aesthetic education of the students and raised the interest in the didactic material. Suggestions and arguments made by different experts were taken into consideration, which were largely the basis for the realization of the wor...
14
artículo
The virtual classroom is an innovative educational resource that allows teachers and students to access and use of various media (chat, web pages, discussion forums, blogs, wikis, etc); in order to perform activities that are conducive to learning. The use of this resource will help optimize the teaching-learning process in person, because it creates a development environment and collaborative work between all actors of learning. This will maintain effective communication between students and teachers. This research was conducted during the academic semester 2016-II, applied to students of the Faculty of Architecture and Urbanism of the Private University of Tacna, regarding the use of virtual classrooms. They were part of the sample 300 students of different cycles. Objective: The objective is to identify the perception of college students from the Faculty of Architecture and Urbanism a...
15
artículo
Publicado 2022
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The objective of this work is the design of a prototype of a pneumatic centrifugal concentrator that allows small-scale mining that takes place in desert and isolated places, to process ultrafine gold minerals in situ, cleanly, without the use of water and chemical reagents. A mathematical model based on the physico-phenomenological analysis of the differential sedimentation separation mechanism was applied in a film of laminar flow fluid, to determine the particle trajectory inside the bowl of the centrifugal concentrator as a function of the variables of bowl geometry, operating variables and physical characteristics of the particle and fluid. The simulations carried out showed a remarkable effect of the use of air instead of water on the trajectory of the particles within the fluid film. The results also showed that the capacity of the concentrator for the separation of particles by d...
16
artículo
The teaching-learning process in higher education should guide, orient and train students towards the acquisition of computer skills, in a society increasingly permeated by Information and Communication Technologies. The objective of the research is to propose a system of Virtual Practical Classes, for the study of the external and internal morphology of vertebrates that are studied as part of the Chordates Zoology program, in the Bachelor's Degree in Education. Biology, in the third year of the Regular Day Course, at the Central University "Marta Abreu" of Las Villas, Villa Clara, Cuba. The system is based on the Historical-Cultural Theory of L. S. Vigotsky and his followers. The information for the diagnosis is obtained from the application of different methods of information gathering and processing, such as surveys, interviews, observation and document review. In order to mitigate th...
17
artículo
Publicado 2014
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In the past decade is frequent use of information and communication technologies as part of the educational and pedagogical task, since it develops a variety of relationships, behaviors, attitudes, roles, skills and other domains, which involves creativity and innovation based on the capabilities and interest of those involved so it has become an essential tool for teaching and learning processes, information, communication, and the generation, appropriation and use of knowledge and the development of technology, science and knowledge, requiring only the use of Internet, telematics, robotics, computer, technology, cyber, cyberspace, cyber art and the like, with very specific performance criteria that would help address the how and with what care the nature of learning and performance of teachers.
18
artículo
This research is based on a framework of educational innovation by making use of Facebook as a pedagogical tool in teaching of Logical thinking course with the aim of moving the teaching practice in new learning environments, increase the interest, high motivation students and results in the assessment of learning. The sample was 80 students ( considered as users) of A and B sections of the Professional School of Accounting during the academic semester 2015- 11. In the frrst instance starts the development of the subject using standard strategies during the first unit; then, in units 2 and 3, use the social network Facebook asan educational tool. Through this space could create among members, open communication channels, sharing information in a dynamic and effective way to strengthen practices related to learning; class guides whose presentations were associated with the use of web 2.0 ...
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20
artículo
We show the results of the teaching-learning experience of the Math 'Level 0' course given to the freshers at UPC who do not pass the Math 'Level Exam'. The work was based on the feedback of the learning process and it was done at the same time that the university 'methodology of competencies' was being applied. The difference was based on the feedback given on each class based on evaluations that measured their cognitive and 'procedural knowledge'(part calculus and modelling of everyday situations). The comparison with the results obtained at the end of the week in general evaluations (common for each class) were positive, which encouraged us to keep up this learning process by common agreement.At the end of the course when comparisons between each class were made we saw that 70% passed the course due to applying this methodology. The in...
