bluuebunny/crossref_metadata_2025 huggingface dataset:
The Perception and Usage of Google Drive Among Higher Education Institution Students in Brunei Darussalam
Authors: Rossiman Nur Diyana , Rashid Norzaidah Hidayah , Ramzuna Wardah Annadiah Ahmad , Almunawar Mohammad Nabil
Published: May 2021

Recently cloud computing services have been adopted by many people and organizations. Google Drive is one of the cloud computing platforms that has gained popularity among students in higher education institutions. This study examines the perceptions and the current usage of Google Drive among students in higher education institutions in Brunei Darussalam. The study adopted the technology acceptance model (TAM) and two additional factors, namely perceived speed of access (PSA) and perceived security (PS). The primary objectives of this research are to explore the factors affecting the usage of Google Drive by the students in higher education institutions in Brunei, to investigate the perceptions of the students on the use of Google Drive, and to find whether attitude influences the behavioral intention to use Google Drive among the students. The findings of this study connote that the students' perceptions on Google Drive have a significant influence towards their attitude to use Google Drive which in turn influence their behavioral intention to use Google Drive in the future.
International Joint Venture in Thailand
Authors: Brahmasrene Tantatape , Suwannarat Pornlapas
Published: May 2021

This research investigates the effects of cultural characteristics, awareness of international joint venture (IJV) importance, commitment, and team commonality on team and IJV performances. This study employs a database of IJV firms from the Thailand Board of Investment and an original survey conducted of IJV top managers via a mailed questionnaire. Data was analyzed using ordinary least square regression. The results indicate that the cultural characteristics of IJV managers have no significant effect on the awareness of IJV importance while individualism and power distance show significant effects on commitment. Also, uncertainty avoidance and power distance exhibit a significant positive impact on team performance. Subsequently, IJV importance awareness mediates between commitment and cultural characteristics to some degree, while individualism and power distance significantly alter commitment. In addition, uncertainty avoidance and power distance exhibit a significant positive impact on team performance, while team commonality reveals no moderating effect.
Initiating Brunei Cross-Border Tourism (BCBT) as a Gateway to Borneo
Authors: Alas Yabit , Anshari Muhammad
Published: May 2021

Borneo is the third-largest island in the world, sharing three countries: Indonesia, Malaysia, and Brunei Darussalam. There is rarely research conducted for cross-border tourism (CBT) in Borneo. The study examines tourism development in Borneo then assesses potentials and challenges associated with Brunei-CBT as gateway to tourism in Borneo. A qualitative approach has been deployed focusing on advantages and challenges associated with Brunei as gateway for CBT in the Borneo Island. The analysis has shown that there is great potential in CBT for mobility and connectivity of people, goods, and services in Brunei-CBT's initiative. Brunei-CBT (BCBT) will trigger Brunei's economic shifting from an oil-based country to a service-based economy. Identified challenges mainly concern political support and willingness among participating countries, which may lead to barriers for connecting Borneo through CBT development.
The Impact of Using Social Networking Sites at Work on Organizational Knowledge
Authors: Akhlaq Ather , Ali Wajaht , Gul Kanwal
Published: May 2021

Many of the employers fear a reduction in productivity when employees use social networking sites (SNSs) such as Facebook for non-work purposes during office hours. Employers then have started regulating SNSs usage at work, but extreme monitoring and blockage of SNSs can spoil the relationship between employers and employees and can negatively affect organizational knowledge (OK). Therefore, this study investigates the effect of using SNSs on OK by employees at work. Collecting data from employees working in national and multinational organizations and using structural equation modelling for data analysis, the results showed that using SNSs for business activities and for emotional disclosure enhanced OK. In contrast to these findings, work deviation caused using SNSs decreased OK but had no effect on productivity. Finally, the study concluded that the benefits of using SNSs at work are increasingly growing but require transparent policies to reduce employee distractions.
Unlocking the Relationship Between Talent Management Practices and Performance Sustainability in the Sports Industry
Authors: Khan Abdul Gaffar , Banik Somiron , Uddin Md. Aftab , Moudud-Ul-Huq Syed
Published: May 2021

The present study investigated the effect of talent management practices on performance sustainability in the sports industry. The study used the deductive reasoning approach to predict new cricketer performance sustainability. The hypotheses were tested using partial least square structural equation modeling (PLS-SEM) techniques. The self-administered structured questionnaires were used to collect data. The total sample size was 270, which were collected from respondents playing in Bangladesh Premier League domestic and international matches. The results revealed that onboarding and engagement, player development, performance management, and strategic teamwork planning positively influence performance sustainability. However, the findings suggested that policymakers and other concerned authorities should implement this result to sustain players' performance continuously. This is the first paper that applies talent management practices to magnify performance sustainability.
A Comparative Study of Jet Airways and Indigo Airline Employee's Motivation in Context With “Hygiene Factor”
Authors: Siddiqui Neha Nazneen , Bisaria Gaurav
Published: May 2021

In this paper, effective human resource management practices and their impact on airline ground staff have been studied. The aviation industry's attrition rates have multiplied in the most recent years in the entry and mid-administration level. It is occurring because of the view of being poor paymasters, delay in pay rates, work uncertainties, and little concern for worker welfare factors; for example, attractive and distinct pay packages with incentives and working conditions appear to be progressively moderate and controlled in regions of aviation. It is needed to know what aspects have changed over time to bridge the employee's expectations. In this paper, different factors of motivation have been analyzed. It has been attempted to discover the innovative techniques of motivation to retain the talent and offer some suggestions to lower the attrition rates of the ground staff of airlines at Lucknow Airport.
Cognitive Support Tools for a Pre-Performance Routine in a Darts Game
Authors: Hiraishi Hironori
Published: May 2021

This paper describes two types of a cognitive support tool for a pre-performance routine (PPR) in darts game. PPRs entail the performance of determined motions before an action and are often executed in sports for the purpose of removing stress or raising concentration. The concentration-stabilizing phenomenon was discovered by the previous research and it determined that the phenomenon appears more conspicuous in the case of experts and PPRs. A tool using a simple brainwaves sensor has been designed and shows us the current status of concentration and notifies us of the concentration-stabilizing phenomenon on a tablet computer. Another tool has been developed on a smart watch with a heart rate sensor. The smart watch indicated heartbeat as a “beep” sound to a user. It was designed based on a result that indicated that darts game scores tend to improve by throwing immediately after a heartbeat. The effectiveness of the tools was verified in several experiments.
The Online Social Network and User Innovation in the Context of an Online Innovation Platform
Authors: Chen Jiali , Liang Yikai , Zhang Jiacheng , Qi Guijie
Published: May 2021

The wide use of social media technology boosts many online innovation platforms, providing effective communication channels for innovation spreading among online users. From the social network perspective, this paper investigates the impact of online interactive relations on user innovation by holistically examining online relations from relational and structural embeddedness, qualified by both the ego-centered and the entire network, respectively. User interaction data from LEGO Ideas are used to empirically test the effects of relational and structural characteristics of online social networks on users’ idea contributions. The results for relational characteristics reveal that the number of online ties has an inverted U-shaped relationship with user innovation, the strength of online ties positively affects user innovation, and neighbor characteristics cannot affect user innovation. For structural characteristics, both centrality and bridge location positively affect user innovation. The findings provide reasonable suggestions for both online users and innovation platforms.
A simple method to provide positive end expiratory pressure to treat hypoxaemia in an anaesthetised Asian Elephant (Elephas maximus)
Authors: Leung Jessica , Beths Thierry , Lynch Michael , Frith Sarah , Bauquier Sebastien H.
Published: May 2021

Hypoxaemia is a common complication in anaesthetised or immobilised elephants. It is presumably because of hypoventilation and ventilation-perfusion mismatch. To prevent hypoxaemia, orotracheal intubation and positive pressure ventilation are recommended. This case report describes a hypoxaemic period despite positive pressure ventilation in a 46-year-old female Asian elephant (Elephas maximus) anaesthetised with azaperone-etorphine, medetomidine and an etorphine constant rate infusion in lateral recumbency for a dental procedure. The hypoxaemia was corrected utilising positive end-expiratory pressure (PEEP) of 5 cm – 10 cm H2O, a technique that has not previously been reported in the management of anaesthetised elephants. PEEP decreases atelectasis, shunt fraction, and increases lung compliance. Positive end-expiratory pressure was achieved by partial occlusion of the tailpiece of a manually triggered demand valve ventilator during expiration. This is a simple effective method of generating PEEP and correcting hypoxaemia without the need for any additional specialised equipment. However, PEEP decreased arterial blood pressure and should be implemented with caution if arterial blood pressure is not monitored.
Road Parameter-Based Driver Assistance System for Safe Driving
Authors:   Indian Institute of Information Technology (IIIT) Sri City, India, Charan Addanki Sai , Sowmya Vasuki J ,   Indian Institute of Information Technology (IIIT) Sri City, India, Venkataraman Hrishikesh ,   Indian Institute of Information Technology (IIIT) Sri City, India
Published: May 2021

One of the key aspects of Advanced Driver Assistance Systems (ADAS) is ensuring the safety of the driver by maintaining a safe drivable speed. Overspeeding is one of the critical factors for accidents and vehicle rollovers, especially at road turns. This article aims to propose a driver assistance system for safe driving on Indian roads. In this regard, a camera-based classification of the road type combined with the road curvature estimation helps the driver to maintain a safe drivable speed primarily at road curves. Three Deep Convolutional Neural Network (CNN) models viz. Inception-v3, ResNet-50, and VGG-16 are being used for the task of road type classification. In this regard, the models are validated using a self-created dataset of Indian roads and an optimal performance of 83.2% correct classification is observed. For the calculation of road curvature, a lane tracking algorithm is used to estimate the curve radius of a structured road. The road type classification and the estimated road curvature values are given as inputs to a simulation-based model, CARSIM (vehicle road simulator to estimate the drivable speed). The recommended speed is then compared and analyzed with the actual speeds obtained from subjective tests.
AN EVALUATION OF SECURITY IN THE NIGERIAN AIRPORTS
Authors:   Department of Transport Management Technology, Federal University of Technology Owerri, Nigeria., Nwasonuba O.C , Okeudo G.N ,   Department of Transport Management Technology, Federal University of Technology Owerri, Nigeria.
Published: May 2021

The air transport industry plays a significant role in the global economy. Secure air transport service enhances connectivity in trade, tourism, political and cultural links between States. The research aims to evaluate airport security at Nigerian airports. And the specific objectives are; to assess passengers’ perception of security service in Nigerian airports, determine the effect of airport security on the utility for air travel, and describe the new technologies maximizing airport security as well as proffer possible ways of promoting airport security in Nigeria. The research employed a descriptive survey design relying on a review of literature and questionnaires distributed to respondents to justify the objectives of the research. It was found that security in the Nigerian airport leaves much to be desired, though on the growth path. The research calls for increased security consciousness in the Nigerian Airport given the security challenges, especially the Boko Haram insurgence bedeviling the country, and required that the government embrace new and innovational trends in aviation security to maximize airport security in the country.
AN EVALUATION OF THE INFLUENCE OF PUPILS’ EATING HABITS ON THEIR ACADEMIC PERFORMANCE IN THE CONTEMPORARY SCHOOL SYSTEM
Authors:   College of Education, Agbor, Delta State, Nigeria., Egede Bernadette
Published: May 2021

The nexus between academic performance, nutrition and eating habit is globally recognized to the extent that it has inspired various strategies such as ‘school feeding programmes’ in many nations including Nigeria. This correlational study was aimed to evaluate the relationship between the eating habits of primary school pupils and their academic performance, using a survey design. Fifty pupils in two intact classes from two schools in rural areas, formed the sample. Data was collected using interviewer-questionnaire, coupled with naturalistic observation, for the eating habits and their results from the term’s examination done within the same periodin the schools. The data was analyzed using SPSS – 23 to determine the correlation coefficients. The results suggest that there is strong relationship between pupils’ eating habits, in terms of frequency of feeding, quality of feeding pattern, and quality of breakfast and their academic performance. In addition, the pupils perceived that eating light breakfast enhances their attention span to learn unlike, skipping of breakfast and eating heavy breakfast. The results of this study provide empirical evidence which can be used to encourage parents in rural areas to provide adequate nutrition for their wards/children to enhance their performance in school as recommended in this paper.
(Ne) Mogućnost ostvarivanja prava deteta na zdravlje i prava deteta na socijalno obezbeđenje
Authors: Vlaskovic Veljko
Published: May 2021

Human rights from the category of economic, social and cultural rights closely resemble moral ideas and proclamations. Therefore they must be realized progressively and gradually, in accordance with the available resources and with respect to minimum core obligations of the States Parties. The child’s right to health and child’s right to social security are typical examples of it. In this paper, the author deals with the problems of interpretation of those rights and their implementation at the national level, with special regard to the Serbian legislation. Special attention is paid to implementation of child’s right to health and child’s right to social security in the area of health care and social protection. The child’s right to health is directly incorporated into domestic law including various entitlements acquired by the child as a patient. Among these entitlements, the most significant are those involving child’s participation rights, such as the right of the child to consent to medical treatment. On the other hand, the child’s right to social security has not been directly incorporated into domestic law, but its implementation is dispersed over the rules on social care and different forms of health insurance. Thereby, a child is primarily considered as a passive user of social security services.
Driver Rating: a mobile application to evaluate driver behavior
Authors: Trindade Nielson S. , Kronbauer Artur H. , Aragão Helder 	G. , Campos Jorge
Published: May 2021

The combination of data from sensors embedded in vehicles and smartphones promises to generate great innovations in intelligent transportation systems. This article presents Driver Rating, a mobile application to evaluate the behavior of drivers based on the data gathered from vehicles´ and smartphones´ sensors. The Driver Rating application analyzes five variables (fuel consumption, carbon dioxide emission, speed, longitudinal acceleration, and transverse acceleration) to evaluate driver´s behaviors while driving. To test the Driver Rating application and identify its potentialities, an experiment was carried out on an urban environment, showing promising results regarding the classification of drivers’ behavior.
La lectoescritura como capacidad cognitiva: procesos componentes. Intervención en educación primaria
Authors: Muñoz Juani González , Calderón Belén Cánovas , Melgar Rocío Muñoz , Alonso Jose María Rabal
Published: May 2021

En el presente artículo se tratarán aspectos relevantes relacionados con la lectoescritura como capacidad cognitiva. La competencia lectora es la capacidad de las personas de poner en práctica  su comprensión lectora de una manera eficaz. La comprensión lectora es la habilidad de las personas de poder entender lo que nos dice un texto escrito de una manera objetiva. Para esto se deben desarrollar distintas habilidades necesarias como el reconocimiento de palabras escritas y de comprensión lectora, y se deben de tener en cuenta distintos procesos implicados en la escritura como son la elaboración y la producción de un texto. A su vez, la memoria operativa controla y almacena la información, por lo que puede explicar diversas complicaciones y dificultades relacionadas con la escritura. Por último, cabe destacar que la lectura y la escritura son procesos relacionados y según Utha Frith (1985) citado por Ramos (2004), para el aprendizaje y enseñanza de la lectoescritura se deben tener en cuenta las etapas logográfica, alfabética y ortográfica.
Socioeconomic profile and quality of life In triângulo mineiro and alto Paranaíba region (Brazil)
Authors: De Souza Josimar dos Reis , Souza Tatiana Silva , Soares Beatriz Ribeiro
Published: May 2021

The present work aims to present the results of the analysis regarding the Socioeconomic Profile of the municipalities that make up the Mesoregion of Triângulo Mineiro/Alto Paranaíba, Minas Gerais, Brazil. The survey and analysis of socioeconomic indicators, from the years 2004 and 2014, aimed to search for devices in order to develop a methodology for analyzing the quality of life of the municipalities that make up the mesoregion, taking into account the specificities of the urban network from the Cerrado Mineiro and the Brazilian urbanization process. It is understood that the quality of life does not depend only on a good offer of essential public services, but on an effective spatial distribution of advanced services regarding health, education, culture, leisure, etc., among the municipalities of the same region. In addition, it is extremely important to consider the population's financial capacity to access these services, a factor that demonstrates the real need to analyze their Socioeconomic Profile. For this analysis, we used the indicators made available by the João Pinheiro Foundation, through the Minas Gerais Social Responsibility Index (IMRS), using the 66 municipalities that make up the mesoregion of Triângulo Mineiro and Alto Paranaíba as the scale of analysis. The data were collected, tabulated and imported into the ArcGIS 10.1 software, in which cartograms were produced. The results presented provided the recognition of the positive evolution overview of the socioeconomic profile, following the Brazilian trend of economic growth experienced in the first decade of the 21st century. In the analyzed period, there was a significant increase in all the indicators assessed. However, it is worth noting the existence of disparities within the same region, with some municipalities showing a high rate of increase in income and employment, while others have reached medium and low growth peaks. It is worth mentioning that the improvement in quality, especially in terms of income and employment, ended up directly influencing the improvement of the population's quality of life.
Positive and negative likelihood ratios of two anthropometric indices (Waist/Height Index and Waist/Hip Index) in the diagnosis of pathological nutritional situations overweight and obesity
Authors: Franco–Monsreal José , May–Panti Alicia , Serralta–Peraza Lidia Esther del Socorro , Sánchez–Uluac María Selene
Published: May 2021

Background and objective. Koch et al., reported that the Waist/Hip Index more accurately predicts cardiovascular risk factors and mortality. Huaman et al., reported that the Waist/Height Index can be used as a diagnostic test for metabolic syndrome, since it has a high significant value. To determine whether two anthropometric indices have sufficient prognostic efficiency or moderate prognostic efficiency by combining sensitivity and specificity using positive and negative likelihood ratios in a single expression. Material and methods. Quantitative epistemological approach. Descriptive observational epidemiological study without directionality and with prospective temporality. Three husband adult patients of both genders who attended the Integral Hospital "Jose Maria Morelos" were studied. As a reference test or Gold Standard was used the Lorentz Equation as a reference test. Results. The results for the positive likelihood ratios corresponded to 13.41 and 1.72 for the anthropometric indices Waist/Height Index and Waist/Hip Index, respectively. The results for the negative likelihood ratios corresponded, respectively, to 0.07 and 0.48 for the anthropometric indices Waist/Height Index and Waist/Hip Index. Conclusions. The best anthropometric index for the diagnosis of overweight and obesity pathological nutritional situations corresponds to the Waist/Height Index, since the results of the positive and negative likelihood ratios report sufficient prognostic efficiencies. On the other hand, the results of the positive and negative likelihood ratios report, respectively, negligible prognostic efficiency and poor prognostic efficiency for the Waist/Hip Index.
El adobe: factores históricos gatillantes en la pérdida de la cultura constructiva en Chile
Authors: Pérez Rodrigo
Published: May 2021

Chile, presenta una larga geografía y una diversidad climática que ha condicionado históricamente la respuesta local arquitectónica y constructiva, adaptándo las soluciones a los recursos naturales disponibles. Entre los sistemas constructivos con tierra, el Adobe ha sido el más utilizado pero también el más cuestionado por su fragilidad a los movimientos telúricos y por tanto a la seguridad que ofrece. Frases como “el adobe mata” o “el adobe es peligroso”, reflejan algunos de los prejuicios que existen contra este material y que desgraciadamente no sólo están en la mente del ciudadano común sino también en la opinión (desinformada) de profesionales, autoridades políticas, etc. Esto da pié a esta investigación, para encontrar respuesta a ¿Qué ha sucedido a lo largo de la historia chilena que ha llevado a este noble material de ser el más utilizado desde épocas pre-hispánicas al más despreciado en la actualidad?. El objetivo principal es buscar y dar a conocer las razones y acontecimientos para rescatar y revalorar el Adobe, rompiendo con algunos mitos y paradigmas muy arraigados en nuestra sociedad actual que ponen freno al uso del material tierra y al desarrollo de técnicas innovadoras con este material tan noble, ecológico y sustentable. En una primera etapa, se realiza un análisis histórico para descubrir la base de estos saberes y técnicas locales en torno al Adobe, estableciendo una cronología de los hechos importantes que fueron gatillando los cambios para finalizar en una segunda etapa con un análisis comparativo del estado del arte de las construcciones que a la fecha están en pié y en buen estado de conservación. La investigación esta en etapa inicial pero ya se vislumbran algunos resultados que dan luces del origen del problema, no sólo socio-culturales y comunicacionales, sino también técnicos, condicionados por políticas
Diplomado de Investigación con Enfoque en la Salud Pública Sistematización Experiencia de Formación en Investigación en Salud
Authors: Sembileon Adelaida Felicia Oreste
Published: May 2021

El diplomado en investigación con enfoque en la Salud Publica/Salud Colectiva, fue realizado con el propósito de reducir las brechas en el nivel de conocimiento sobre investigación científica, en docentes universitarios, gestores y prestadores de servicios de salud en la Republica Dominicana.  Se asumió el enfoque de la Salud Publica por la necesidad de reorientar supuestos teóricos y metodológicos del enfoque biologista y hospitalocéntrico, que predomina en la formación de recursos humanos en salud, redirigiendo la formación hacia una visión integral y crítica sobre los problemas de salud. Acá se entendió a la salud como proceso histórico socialmente determinado.  Este cambio de paradigma requirió el uso de metodología congruente con los valores y principios del enfoque asumido, la metodología de investigación acción participativa, creando un proceso de enseñanza-aprendizaje dialógico y colaborativo en el cual el análisis y la reflexión propositiva, dieron paso a una mirada y acción más integral sobre los problemas de salud. Fue ejecutado en un periodo de siete meses (7) con seis (6) módulos desarrollados a través de distintas estrategias y técnicas didácticas. Los temas fueron Salud Publica/Salud Colectiva, Investigación Científica en Educación Superior, Investigación Cualitativa en Salud y el Proceso de Investigación Científica, todos transversalizados por tres ejes: El derecho universal a la salud, Determinación Social, Equidad en salud y de género.  Se formó un comité de dirección, cinco (5) grupos de trabajos, un equipo de coordinadores, un equipo de docentes y conferencistas nacionales e internacionales, entre los que hubo un ex premio Nobel de la Paz. Entre los resultados destacan alto porcentaje de permanencia, 48 personas iniciaron y 41 egresaron, para un 85.4 %, 19 de estos realizaron una pasantía en la Universidad de Guadalajara, Jalisco y en la Universidad Nacional Autónoma de México y se elaboraron cinco (5) propuesta de investigación, de los cuales dos (2) han sido ejecutadas.
Influencia de las masculinidades en la construcción del concepto de familia, cultura jurídica y sociedad entre 1900 -1950. Un estudio comparativo entre México y Colombia
Authors: Mendoza Alba Luz Robles , Castillo Nancy Andrea Forero
Published: May 2021

Introducción: La masculinidad es un conjunto de características, valores y comportamientos que una sociedad impone a un varón. Los hombres construyen su masculinidad, es decir, aprenden a comportarse de acuerdo con el lugar y momento histórico en el que viven, donde el modelo tradicional masculino es el que define cómo deben sentir, pensar y comportarse. Entre algunos de los atributos que el varón debe poseer para considerarse como un hombre socialmente aceptado, están el ser poderoso, fuerte, rudo, competitivo, dominante, triunfador y seguro de sí mismo. Sin embargo, cada hombre tiene la capacidad de decidir si está de acuerdo con los patrones de conducta impuestos, o bien, prefiere vivir su masculinidad de manera diferente; de tal manera que no hay sólo una expresión, sino muchas masculinidades. Objetivo: identificar cómo las masculinidades contribuyen en la noción de cultura jurídica, familia y sociedad entre los años 1900 a 1950 haciendo un estudio comparativo entre México y Colombia. Método: Es un estudio comparativo histórico conceptual de carácter cualitativo el cual, a través de la exploración de textos de carácter jurídico, psicológico, histórico, sociológico y cultural, permita determinar cómo las masculinidades han influido en la construcción del concepto de familia y cultura jurídica y cómo estos preceptos siguen vigentes en la actualidad. Resultados: Las dominancias androcéntricas colocan al varón en posición cultural y educativa superior y en proceso de cambio hacia el establecimiento determinante de las clases sociales y de diferenciación del género. Conclusiones: El desarrollo socio-histórico que la masculinidad ha tenido demuestra la influencia de los contextos sociales en las identidades masculinas, así como en sus prácticas paternas y de representación social.
The musts for teaching english in secondary education: theory and practice
Authors: Ponce Sonia María Martínez
Published: May 2021

This paper presents a conceptual approach —made after a detailed review of the current existing bibliography— of the current situation in relation to teaching in Secondary Education in Spain from a theoretical-legal point of view highlighting the importance of inclusive education —truthful and of quality—. This research also presents a practical intervention proposal to address assertiveness in the English classroom that will make a good account of the correct teaching involvement.
Ja Software Libre para el Análisis Espectral de Señales
Authors: Vanegas Carlos , Guerrero Rocío Rodríguez , Montiel Gerardo Castang
Published: May 2021

En el presente artículo se realiza el análisis espectral de señales en particular de algunos de los códigos de línea más utilizados o comunes en la representación eléctrica de una secuencia binaria de datos , con el propósito de validar su comportamiento espectral, así como su dependencia de los parámetros tasa de bit (R) que corresponde a la velocidad a la cual se transmiten los datos, en bits por segundo; frecuencia (f) definida como aquellas bandas o rangos en las que se distribuyen los componentes de potencia, dada en hertz y tiempo de bit (Tb) que corresponde al tiempo que dura la presencia o transmisión de un bit, dada en segundos y su incidencia en las gráficas de la densidad espectral de potencia.

Se utiliza el software libre Python aplicado en casos de análisis de señales y en la enseñanza de temas de ingeniería, particularmente en la telemática y  las comunicaciones.
Reaction of advanced lines of triticale to karnal bunt (Tilletia indica)
Authors: Fuentes-Dávila Guillermo , Rosas-Jáuregui Ivón Alejandra , Ayón-Ibarra Carlos Antonio , Félix-Fuentes José Luis , Félix-Valencia Pedro
Published: May 2021

Twenty advanced lines of triticale were evaluated for resistance to karnal bunt during the 2014-2015 crop season, at the Norman E. Borlaug Experimental Station. The sowing dates were November 19 and 29, 2014. One mL of an allantoid sporidial suspension (10,000/mL)  was injected during the boot stage of ten spikes per line. A mist-irrigation system was used to provide high humidity in the experimental area. Harvesting and threshing were done manually, and the counting of infected and healthy grains was perfomed by visual inspection. The range of infection for the first sowing date was 0 - 2.4%, with an average of 0.3, and for the second 0 - 1.4%, with an average of 0.4. Five lines did not show any infected grains in both dates and the rest was in the  0.1-2.5% infection category. The average of infection of the susceptible check during the period of inoculation of this group of lines was 86.6%. The highest average percentage of infection of both dates were shown by lines: TURACO/CENT.SARDEV/7/LIRON_2/5/DISB5/3/SPHD/ PVN//YOGUI_6/4/KER_3/6/BULL_10/MANATI_1/8/LIRON_2/5/DISB5/3/SPHD/PVN// YOGUI_6/4/KER_3/6/BULL_10/MANATI_1/9/BICEN (CTSS08Y00035S-099Y-026M-19Y-099M-2Y-2BMX-4Y)  with 1.6 and POPP1_2/CAAL//THELIN#2/5/PRESTO//2*TESMO_1/ MUSX603/4/ARDI_1/TOPO1419//ERIZO_9/3/SUSI_2/6/ARDI/GNU//2*FAHAD_1/4/BULL_ 10/MANATI_1/3/ELK54/ BUF_2//NIMIR_3 with 1.3%. These lines also showed the highest percentage of infection in the first date with 1.8 and 2.4%, respectively.
Effect of flavored water on the morphological and chemical composition of human dental enamel microestructure in vitro
Authors: Francisco Gómez B. , María P. Guzmán , Jimena Papasodaro , Melina M. Procopio R. , J. Saldías Alejandro , S. Ogas Cintia , M. Motta Guillermo , Rosario De Landaburu
Published: May 2021

There is a remarkable interest in the dental area about the effect produced by the acidic agents contained in commercial non-alcoholic drinks on dental enamel due to their ability to produce caries or erosive lesions. The objective was to characterize the morphological and the chemical alterations of the adamantine structure exposed to the action of a flavored water. Human dental crowns sectioned in the buccolingual direction were embedded in polymer. Flat and highly polished surfaces were obtained by wear with descending granulation sandpaper. Observations and chemical analyses were performed on radial enamel before and after exposure to the beverage, at the ESEM FEI QUANTA 200-EDS (SeMFi-LIMF. FI- UNLP). For the morphological description, the etching patterns of the enamel were considered. The chemical elements sodium, magnesium, chlorine, and the calcium/phosphorus ratio were studied. The samples were immersed in 100 ml of a flavored water for 12 minutes. At the ESEM, the prisms presented different patterns of acid etching, which may affect the core or the profile. The chemical composition showed variations according to the area, before and after the treatment. Although the studied elements were present in the healthy enamel, both in the radial and in the Hunter Schreger bands, the percentage values were different. In the bands, sodium and magnesium increased while chlorine decreased. After the action of the flavored water, sodium and magnesium increased even more and the chlorine dropped markedly. A significant difference was found in Ca/P ratio before and after treatment. The beverage used contains acid agents in its composition that produce loss of minerals from the adamantine tissue. We conclude that the exposure of tooth enamel to flavored water produces demineralization compatible with erosion lesions.
Mechanical characterization of the enamel microstructure treated with non alcoholic drinks
Authors: E. Lazo Gabriel , A Abal Adrián , Federico Belloni , A Merlo Diego , A Barceló Miguel , Emanuel H Barrasa , Patricia S. Pérez , M. Tanevitch Andrea
Published: May 2021

In previous studies, it has been shown that the microstructure of prismatic dental enamel presents differences between the external and internal zone. Radial enamel is found in the outer third of enamel and has higher microhardness values than enamel with Hunter- Schreger Bands (HSB) that occupies the inner 2/3. Our aim was to evaluate the mechanical behavior of radial enamel and HSB due the action of a non-alcoholic beverage in vitro. Longitudinal sections of dental crowns were embedded in polymer, worn and polished with sandpapers of decreasing granulation. The samples were immersed in a flavoured natural water for 12 minutes. Nanohardness tests (Triboindenter Hysitron) were performed on the radial and HSB enamel before and after the exposure to the drink. Hardness determinations "H", reduced modulus "Er" and contact depth "hc" were obtained. The percentage of reduction of hardness was determined. The values found in healthy radial enamel were H: 5.48±0.23 GPa; Er: 86.97±8.11 GPa; hc: 149.73±4.25 nm and in HSB H: 4.24±0.43 GPa; Er: 75.24±7.09 GPa; hc: 176.36±11.29 nm. After exposure to beverage, it was found in the radial enamel H: 2.22±0.31 GPa; Er: 58.73±10.79 GPa; hc: 270.29±21.22 nm, and in HSB H: 1.54±0.42 GPa; Er: 48.11±6.54 GPa; hc: 350.10±63.33 nm. After the drink action, the values of hardness of the radial enamel and HSB decreased and the trend observed in healthy enamel remained, where the highest values corresponded to the radial enamel. The percentage reduction of H in the radial enamel was 59.48% and in the HSB enamel it was 63.67%. The contact depth increased by about 50%.The decrease in hardness is related to the mineral loss produced by the acids contained in the drink. We conclude that the action of the non-alcoholic beverage produces a decrease in the mechanical properties in both the radial enamel and the HSB. The lower values in the reduced module Er indicate the formation of a superficial softened layer, the enamel with HSB being more vulnerable.
Educación emocional y centros de interés: cómo trabajar las emociones en educación infantil
Authors: Montoya Marta Mendez , Martínez Marta Pérez , Alonso Ana Ruiz , Alonso Jose María Rabal
Published: May 2021

Partiendo de un marco teórico, la educación emocional y las emociones positivas deben ser trabajadas en los niños y niñas. Más aún si se trata de la Educación Infantil, donde aún no comprenden bien o no saben gestionar las mismas, debido a su egocentrismo, entre otras dificultades que no les permiten ponerse en el lugar de los demás o resolver conflictos de forma positiva. En este artículo, planteamos una serie de actividades y técnicas para conocer y trabajar tanto las emociones como las emociones positivas, pudiendo éstas ayudar al alumnado en diversas situaciones de la vida cotidiana.
Perfil motor según la batería vítor da fonseca en una población escolar de instituciones educativas del distrito de barranquilla en el año 2018
Authors: Rodero Eulalia Amador , Iriarte Tammy Pulido , Esmeral Leslie Montealegre , De la Hoz Emilyn Johana Martínez , Carbarcas Sergio Pacheco , Modesto Stefhanie Rivera , Pereira Laura Ardila , León Gina Bustos
Published: May 2021

El perfil psicomotor del niño está relacionado directamente con su desarrollo psicomotor, el cual se entiende como un proceso de evolución continua que sucede a medida que van trascurriendo los años. Dicho proceso se da en diferentes etapas, cada una con características específicas, lo cual le permite al niño ir adquiriendo y desarrollando nuevas habilidades

OBJETIVO: Determinar el Perfil motor según la batería Vítor Da Fonseca en una población escolar de instituciones educativas distritales de Barranquilla. MATERIALES Y MÉTODOS: Se conto con una población de 4867 escolares de las Instituciones Distritales Educativas de la Ciudad de Barranquilla, de la cual se calculo una muestra de 341 inividuos con edades entre 5 a 9 años, escogidos por medio de un muestro aleatorio simple, a los que se les aplico la Batería Psicomotora de Vítor Da Fonseca para evaluar las habilidades y competencias motrices. RESULTADOS: De acuerdo con los resultados obtenidos según la Batería Vítor Da Fonseca se determinó que el 60% de los niños evaluados tienen su desarrollo motor bueno, el 25% resultó en una calificación de normal y un 15% de la población se encuentra dentro de la clasificación de superior. El rango de edad fue de los 5-9 años, con una distribución homogénea, el valor mínimo estuvo para los niños de 5 años conformado por 39 niños (11,4%) y la edad promedio fue de 7 años (24,9%). Según el sexo 202 de los participantes en el estudio pertenecían al género femenino (59,2%) y 139 (40,1%) correspondía al género masculino, por último, según el estrato socioeconómico al estrato socioeconómico, el 38,1% de los participantes pertenecen al estrato 2 y el 32, 9 % al corresponden al estrato 3 CONCLUSION: Se concluyo que el 60% de los niños evaluados tienen su desarrollo motor bueno, el 25% resultó en una calificación de normal y un 15% de la población se encuentra dentro de la clasificación de superior, dando como explicación que puede que exista una prevalencia del 50% de la población con alteraciones motoras y un 50% de no presentar prevalencias en las alteraciones motoras.
Cambios fisiologicos producidos por las bebidas energizantes: Estandarizacion del procedimiento con el uso de un polígrafo digital
Authors: Ruiz Paula Alexandra Correa , Mantilla Alvaro José Lora
Published: May 2021

La poligrafía digital es una herramienta util en la evaluacion de los cambios fisiologicos ante los diversos estimulos y ha  sido usada en diferentes ámbitos tanto de las ciencias de la salud como en el área laboral con el llamado detector de mentiras. En la actualidad el uso de bebidas energizantes tiene  una  alta prevalencia y a traves de la poligrafia se puede evaluar y ampliar el conocimiento del efecto que producen estas a nivel fisiologico y que pudieran en algún momento amenazar la salud  de  los usuarios. En este estudio piloto se hizo la estandarizacion de la toma de muestras de: electrocardiografía, respuesta galvánica de la piel y frecuencia respiratoria para obtener buenas señales que puedan ser analizadas.
Recognition of emotions through facial expression analysis
Authors: Salinas Freddy Alejandro Castro , Ortiz Geovanny Genaro Reivan , Suarez Pedro Carlos Martínez
Published: May 2021

The possibility of recognizing what emotion one of our peers is experiencing has been the subject of study by various researchers over the years, Paul Ekman being the one who has delved most deeply into this subject, the most viable and simple way to achieve this would be through the analysis of people's facial expressions. The search for information was carried out using rigorous exclusion criteria such as studies corresponding to grizzly data and letters to the editor, and inclusion criteria such as studies published only in high impact journals such as PubMed, Elsevier, Taylor & Francis, ScienceDirect, APA PsycNet and Springer, PRISMA guidelines and AMSTAR check-list were used. The main objective of this systematic review was to determine whether there is sufficient scientific literature evidence to clarify whether it is possible to accurately identify the six basic universal emotions "happiness, surprise, sadness, anger, fear and disgust" proposed by Paul Ekman through facial expressions. After the analysis of the articles collected and based on the main findings, it is concluded that the recognition of emotions through facial expressions is a subject that still needs to be studied in greater depth, as suggested by the results obtained.
Caracterización estructural y óptica de películas delgadas de dióxido de titanio depositadas por rociado pirolítico
Authors: Vera Ricardo Otilio Verde , Cruz Oscar Enrique Tang , Rojas Juan Manuel Pesantes , Tarmeño Eusebio Idelmo Cisneros , Kiyán Julio Alfonso Arakaki , Gutierrez Hernan Oscar Cortez , Gutierrez Milton Milciades Cortez
Published: May 2021

Se sintetizó películas de dióxido de titanio (TiO2) por rociado pirolítico, mediante una solución precursora de diisopropóxido de titanio estabilizado con acetil–acetonato al 75 % en isopropanol disuelto en metanol. Esta solución se roció sobre sustratos de vidrio en una cámara de reacción a 30 psi de presión a diferentes temperaturas (380, 430 y 480 y 380 recocida a 500 °C). La difracción de rayos X (DRX), estudió, el tamaño de grano, microtensión y parámetros de red. La espectroscopia UV–Vis, estudió la transmitancia, índice de refracción, espesor de las películas y ancho de banda prohibida. El equipo de cuatro puntas colineales estudió la relación voltaje–corriente. A 380 °C, la película es amorfa y las demás presentaron fase anatasa con pico predominante (101). La película crecida a 480 °C presenta el pico de rutilo (211). El tamaño de grano disminuye y la microtensión aumenta con la temperatura. Las películas de 480 y 500 °C muestran regular transparencia en la región visible (50–75 %). El índice de refracción se encuentra el rango de 1,96–2,43 y el ancho de banda prohibida tiene aproximadamente 3,2 eV. La gráfica voltaje – corriente, es lineal para las muestras crecidas a 480 °C.
Perspectivas de docentes y gestores educativos ante las medidas adoptadas en Paraguay debido al covid-19
Authors: Canese Valentina , Mereles Juan Ignacio , Amarilla Jessica
Published: May 2021

Debido a la pandemia causada por el COVID-19, gobiernos en todo el mundo han tomado medidas que han afectado a los sistemas educativos, interrumpiendo las clases presenciales de al menos 70% de las instituciones, para evitar la propagación del virus (UNESCO 2020). En Paraguay se dio un cierre abrupto y temprano. Este estudio presenta un análisis de las perspectivas institucionales de gestores y docentes con respecto a los desafíos presentados teniendo en cuenta la preparación que existía en relación a factores tales como infraestructura y acceso a la tecnología, capacitación docente, limitaciones de estudiantes y padres. Se utilizó una metodología mixta cuan-cual con cuestionarios de preguntas cerradas y abiertas. La muestra incluyó a 1030 docentes y 110 gestores educativos de instituciones públicas y privadas de todos los niveles de todo el país. El estudio muestra que a inicios de las medidas adoptadas por el gobierno las instituciones educativas tuvieron inconvenientes en el desarrollo de las clases a distancia. Las principales dificultades fueron el limitado acceso a internet, la escasa capacitación en el uso de las TIC educativas y el acceso a ellas. De igual manera, minimizar la deserción estudiantil y conservar la calidad de la educación representan los mayores desafíos para la continuidad del proceso educativo. Estos aspectos demuestran la necesidad de un mayor y mejor acceso a las tecnologías educativas por parte de los principales actores educativos del país.
DAYA TARIK WISATA TERHADAP KEPUASAN WISATAWAN OBJEK WISATA BENTENG ROTTERDAM KOTA MAKASSAR
Authors: Rajab Muhammad Arhan
Published: May 2021

This study aims to determine whether there is an influence between the development of tourist objects on tourist satisfaction at the tourist attraction of Fort Rotterdam in Makassar City. This research was conducted at the tourist attraction of Fort Rotterdam, the population of which was all visitors who visited in 2019, amounting to 2,350 people. To determine the sample to be the respondent is determined by the Slovin formula so that the sample is 96 tourists, while the data collection techniques used questionnaires and interviews, while the data analysis used the statistical product moment correlation with the rough number formula (rXY). The results of data analysis show that the influence of tourism development on tourist satisfaction has a strong correlation, indicated by the correlation coefficient rcount of 0.782 in fact> (greater) than r table of 0.195 at a significant level of 5% and 0.254 at a significant level of 1%. The results of the calculation of the coefficient of determination show that the Tourism Object Development variable (X) has an effect of 78.2% on the tourist satisfaction variable (Y), while the remaining 21.8% is influenced by other variables which are not investigated in this study.

Keywords: Satisfaction, Tours, Rotterdam Fort, Makassar City