Sistema Informático de Encuestas a los Alumnos Aceptados del PE de Contaduría del Centro Universitario UAEM Zumpango

Actualmente las aplicaciones Web son comunes en diversas áreas, no es difícil encontrarsecon aplicaciones Web de contabilidad, de ventas o educativas. En este trabajo se desarrolló un Sistema de Información Web para Aplicación de Encuestas (SIWAE) para estudiantes de Licenciatura en Contabilidad del Centro Universitario UAEM Zumpango. El proyecto se derivó de la necesidad de contar con un sistema capaz de almacenar y analizar datos acerca de alumnos de primer año de Contabilidad. Antes de este proyecto los cuestionarios eran manualmente aplicados usando formatos impresos y las respuestas eran capturadas después en hojas de cálculo electrónicas. Es bien sabido que los procesos realizados manualmente no son recomendados especialmente si la cantidad de información crece rápidamente. La mayor contribución de este trabajo es el desarrollo de SIWAE el cual automatiza la tarea de capturar respuestas, ejecuta validaciones sobre ellas y es capaz de generar reportes básicos que pueden ayudar a analizar los datos en la base de datos del sistema. La aplicación ofrece algunas opciones para administración como respaldar la base de datos, modificar los datos de usuarios,cambiar permisos y eliminar usuarios. Permite también realizar algunos reportes y gráficas de los resultados de las encuestas

Innovation Challenges in Latin America

Innovation emerges as an option for companies to achieve growth and sustainability in a dynamic, complex and increasingly competitive environment. Thus, the innovation process has been analyzed from different perspectives, finding different definitions and classifications (Porter, 1998; Cooke, 2008; McCann and Ortega-Argiles, 2015; Geldes et al, 2017a).However, most innovation studies have focused on developed economies. In fact, in the case of Latin America, studies started late and are relatively scarce (Ketelhöhn and Ogliastri, 2013; Olavarrieta and Villena, 2014). In addition, it has been established that business innovation is determined by internal and external factors that are specific to each industrial sector and country, so those general recommendations can only be made to promote innovation in developing or emerging countries (Brenes et al, 2016; Geldes et al, 2017a; Heredia et al, 2018a). Moreover, there are specific variables in Latin American and emerging economies that affect innovation processes such as high levels of informal competition, low levels of inter-organizational cooperation, differences between companies in regions and capitals, among others (Pino et al, 2016; Brache and Felzensztein, 2017; Geldes et al, 2017b; Heredia et al, 2018b).Given the above, we propose this "special issue" of the Journal of Technology Management and Innovation (www.jotmi.org), with the purpose of contributing to the discussion of the challenges to promote innovation in Latin America. With the purpose of orienting the research proposals, we propose the Global Index of Innovation[1] as a framework, considering the disaggregation of its dimensions and components. It will allow shedding light on topics that can be addressed for this special issue oriented to the firm´s innovation, such as:InstitutionsEase of starting a businessEase of resolving insolvencyHuman Capital and ResearchResearchersGlobal R&D companiesInfrastructureUses and access of Information and Communication TechnologiesISO 14001 environmental certificatesMarket sophisticationEase of getting creditIntensity of local competitionDomestic market scaleBusiness sophisticationThe percentage of females employed with advanced degrees out of total employedUniversity/industry research collaborationIntellectual property paymentsResearch talent in business enterpriseKnowledge and technology outputsPatent applications by originNew business densityTotal computer software spendingHigh-tech exportsCreative outputs.Cultural and creative services exportsMobile app creation [1] https://www.globalinnovationindex.org/Hom

Spatial ecology of blue shark and shortfin mako in southern Peru: local abundance, habitat preferences and implications for conservation

While global declines of pelagic shark populations have been recognized for several years, conservation efforts remain hampered by a poor understanding of their spatial distribution and ecology. Two species of conservation concern are the blue shark Prionace glauca and the shortfin mako shark Isurus oxyrinchus. To improve management of these species, this study examined their local abundance patterns, habitat preferences, and distribution in the Southeast Pacific. Catch per unit effort (CPUE) data from an artisanal fishery in Peru were used to identify geographic hot spots and model abundance estimates as a function of environmental variables, including the El Nino Southern Oscillation (ENSO). A 10 yr data series revealed declining annual landings since 2012, despite no changes in management structures. Significant aggregations of both species were found in southwestern Peruvian waters (74-76 degrees W, 17-19 degrees S), with both species-specific hot spots targeted by major fishing efforts. P. glauca CPUE increased during La Nina conditions (i.e. low water temperature anomaly), and CPUE of both species declined when water depths exceeded 1000 m. Correlations with lunar illumination and chlorophyll a were revealed in P. glauca and I. oxyrinchus, respectively. Modeling explained 57 to 61% of the deviance, indicating that other factors not included in the present study might account for unexplained variance in CPUE (e.g. thermocline depth, location of marine fronts, dissolved oxygen, and gear characteristics). Given the importance of the examined area to shark fisheries and the exploitation of multiple species of conservation concern, the information presented here can be used to inform management strategies designed to limit the depletion of pelagic sharks

Evaluación objetiva estructurada de habilidades técnicas aplicadas según género en estudiantes de medicina para la técnica de sutura

Objetivo: Determinar si la evaluación objetiva estructurada de habilidades técnicas (OSATS) aplicadas según género en estudiantes de medicina mejora la técnica de sutura. Material y Métodos: se llevó a cabo un estudio pre experimental, aplicando un taller de enseñanza de sutura, con una muestra de 65 estudiantes de medicina. Resultados: la aplicación de la evaluación objetiva estructurada de habilidades técnicas (OSATS) aplicadas según género en estudiantes de medicina, si mejoro, siendo antes de la aplicación una calificación mala en su totalidad a un 100% de sus participantes, el cual el 66.2% femeninos y el 33.8% en masculino; y después de la aplicación con una calificación buena siendo el 58.5% en femeninos y el 24.6% en masculino, con un valor de t = 28.419 siendo p<0.05 (p =0.000), a un nivel de significancia del 5%.. Conclusiones: La herramienta de evaluación objetiva estructurada de habilidades técnicas (OSATS), si mejora la técnica de sutura en el género de los estudiantes de medicina.Objective: To determine if structured objective evaluation of technical skills applied according to gender in medical students improves suture technique. Material and Methods: a pre experimental study was carried out, applying a teaching workshop, with a sample of 65 students. Results: the application of the objective structured assessment of technical skills (OSATS) applied according to gender in medical students, improved suture technique, being before the application of the tool a bad score 100% of its participants, which 66.2% were female and 33.8% male; and after the application with a good rating being 58.5% in women and 24.6% in men, with a value of t = 28.419 being p <0.05 (p = 0.000), at a level of significance of 5%. Conclusions: The objective structured technical skills assessment tool (OSATS), improved suture technique in the gender of medical students.Tesi

EMGTFNet: Fuzzy Vision Transformer to decode Upperlimb sEMG signals for Hand Gestures Recognition

Myoelectric control is an area of electromyography of increasing interest nowadays, particularly in applications such as Hand Gesture Recognition (HGR) for bionic prostheses. Today's focus is on pattern recognition using Machine Learning and, more recently, Deep Learning methods. Despite achieving good results on sparse sEMG signals, the latter models typically require large datasets and training times. Furthermore, due to the nature of stochastic sEMG signals, traditional models fail to generalize samples for atypical or noisy values. In this paper, we propose the design of a Vision Transformer (ViT) based architecture with a Fuzzy Neural Block (FNB) called EMGTFNet to perform Hand Gesture Recognition from surface electromyography (sEMG) signals. The proposed EMGTFNet architecture can accurately classify a variety of hand gestures without any need for data augmentation techniques, transfer learning or a significant increase in the number of parameters in the network. The accuracy of the proposed model is tested using the publicly available NinaPro database consisting of 49 different hand gestures. Experiments yield an average test accuracy of 83.57\% \& 3.5\% using a 200 ms window size and only 56,793 trainable parameters. Our results outperform the ViT without FNB, thus demonstrating that including FNB improves its performance. Our proposal framework EMGTFNet reported the significant potential for its practical application for prosthetic control

Hybrid Allocation Mechanisms for Publicly Provided Goods

Motivated by efficiency and equity concerns, public resource managers have increasingly utilized hybrid allocation mechanisms that combine features of commonly used price (e.g., auction) and non-price (e.g., lottery) mechanisms. This study serves as an initial investigation of these hybrid mechanisms, exploring theoretically and experimentally how the opportunity to obtain a homogeneous good in a subsequent lottery affects Nash equilibrium bids in discriminative and uniform price auctions. The lottery imposes an opportunity cost to winning the auction, systematically reducing equilibrium auction bids. In contrast to the uniform price auction, equilibrium bids in the uniform price hybrid mechanism vary with bidder risk preferences. Experimental evidence suggests that the presence of the lottery and risk attitudes (elicited through a preceding experiment) impact auction bids in the directions predicted by theory. Finally, we find that theoretically and experimentally, the subsequent lottery does not compromise the efficiency of the auction component of the hybrid mechanisms

Knowledge of mathematics teachers in initial training regarding mathematical proofs: Logic-mathematical aspects in the evaluation of arguments

The total percentage of contribution for the conceptualization, preparation and correction of this article was the following: C.A.C. 50%, P.F.M. 25% and G.V.S. 25%.The objective of this study is to characterize the knowledge of mathematics teachers in initial training (MTITs) at the Universidad Nacional (Costa Rica) on the logic-syntactic and mathematical aspects involved in proving, when evaluating mathematical arguments. The research is positioned in the interpretive paradigm and has a qualitative approach. It consists of two empirical phases: in the first, a questionnaire regarding logic-syntactic aspects was applied to 25 subjects, during the months of September and October 2018 and; in the second phase, a second questionnaire covering mathematical aspects was applied to 19 subjects, during the months of May and June 2019. For the analysis of the information, knowledge indicators were proposed. Knowledge indicators are understood as phrases to determine evidence of knowledge in the responses of the subjects. It was appreciated that the vast majority of future mathematics teachers show knowledge to discriminate when a mathematical argument corresponds or not to a proof by virtue of the logic and syntactic aspects, and of mathematical elements associated with propositions with the structure of universal implication. In general, subjects displayed greater evidence of knowledge on the logic-syntactic aspects than on the mathematical aspects. Specifically, they evidenced that consideration of a particular case or the proof of the reciprocal proposition does not prove the result; likewise, subjects evidenced knowledge about the direct and indirect proof of the universal implication. In the case of the mathematical aspects considered as hypotheses, axioms, definitions and theorems, it was appreciated that subjects could have different levels of difficulties to understand a proof.El objetivo de este estudio es caracterizar el conocimiento de profesores de matemáticas en formación inicial en la Universidad Nacional de Costa Rica sobre aspectos lógico-sintácticos y matemáticos de la demostración, al evaluar argumentos matemáticos. La investigación se posiciona en el paradigma interpretativo y tiene un enfoque cualitativo. Consta de dos fases empíricas: en la primera, se aplicó un cuestionario sobre los aspectos lógico-sintácticos a 25 sujetos, durante los meses de setiembre y octubre de 2018 y, en la segunda, un cuestionario sobre los aspectos matemáticos a 19 sujetos, durante los meses de mayo y junio de 2019. Para el análisis de la información, se propusieron indicadores de conocimientos, entendidos como frases para determinar evidencias de conocimientos en las respuestas de los sujetos. Se apreció que la gran mayoría de los futuros profesores de matemáticas evidencian conocimiento para discriminar cuándo un argumento matemático corresponde o no a una demostración en virtud de los aspectos lógicos y sintácticos, y de elementos matemáticos asociados a proposiciones con la estructura de la implicación universal. En general, brindaron mayores evidencias de conocimiento sobre los aspectos lógico-sintácticos que sobre los aspectos matemáticos. Concretamente, evidenciaron que un caso particular o la prueba de la proposición recíproca no demuestra el resultado; asimismo, evidenciaron conocimiento sobre la demostración directa e indirecta de la implicación universal. En el caso de los aspectos matemáticos considerados como las hipótesis, los axiomas, las definiciones y los teoremas, se apreció que podrían tener diferentes niveles de dificultades para comprender una demostración.Este estudo teve como objetivo caracterizar o conhecimento de professores de matemáticas em formação inicial na Universidade Nacional da Costa Rica sobre aspectos lógico-sintáticos e matemáticos da demonstração ao avaliar argumentos matemáticos. A pesquisa está posicionada no paradigma interpretativo e tem um enfoque qualitativo. Consiste em duas fases empíricas: na primeira foi aplicado um questionário sobre os aspectos lógico-sintáticos a 25 sujeitos, durante os meses de setembro e outubro de 2018 e, na segunda, um questionário sobre os aspectos matemáticos a 19 sujeitos, durante os meses de maio e junho de 2019. Para a análise das informações foram estabelecidos indicadores de conhecimentos, entendidos como frases para determinar evidências de conhecimentos nas respostas dos sujeitos. Constatou-se que a grande maioria dos futuros professores de matemáticas evidencia conhecimento para discriminar quando um argumento matemático corresponde ou não a uma demonstração em função dos aspectos lógicos e sintáticos, e de elementos matemáticos associados às proposições com a estrutura da implicação universal. Em geral, foram fornecidos maiores evidências de conhecimento sobre os aspectos lógico-sintáticos do que sobre os aspectos matemáticos. Concretamente, evidenciaram que um caso particular ou a prova da proposição recíproca não demonstra o resultado; da mesma forma, evidenciaram conhecimento sobre a demonstração direta e indireta da implicação universal. No caso dos aspectos matemáticos considerados como as hipóteses, os axiomas, as definições e os teoremas, percebe-se que poderiam ter diferentes níveis de dificuldades para compreender uma demonstração