bluuebunny/crossref_metadata_2025 huggingface dataset:
Smart Parking System Based on the IR Sensor and Node MCU with the Blynk Application
Authors: Chakraborty Anwita , Shah Shrey Chirag , Kumar Yelithoti Sravana , Samant Tapaswini , Swayamsiddha Swati
Published: June 2020

Background:

The prime challenge in Parking Systems is to administer the parking during peak hours or peak
seasons. Besides being time consuming, it is laborious. Amalgamation of various infrastructure of hardware and software
is prodigious and thus adding to its conventional hardware, making the investment in Smart Parking solution highly
hazardous and splintered. Electronic payment vendors causes another crucial drawback.

Objective:

With the evolution of technology, we have proposed the plan to diminish human endeavors to such a degree,
that a limit of one individual will be required to deal with the total colossal parking spot and a most extreme of one or two
volunteers if there should arise an occurrence of any technical issues with minimal cost of operation.

Methods:

In our proposed work we have used Infrared Sensors at each parking slot and also used a Node Micro Controller
Unit, a Wi-Fi microchip for connectivity. The Internet of Things platform used over here is Blynk.

Results:

The proposed technique performs better compared to existing state-of-art methodologies as it is cost-effective
and easy to implement. Also, this can maintain the total vehicle count of a particular day which can be used for further
traffic analysis.

Conclusion:

This paper presents the prototype of a Smart Parking System based on the IR sensor and Node MCU which
is connected to the Blynk app that monitors the whole parking lot. It provides an optimized parking solution for various
places available with parking facilities throughout the city. The proposed Smart parking system enables the guard incharge to obtain necessary information on the availability of parking space and keep a track of the effective number of
vehicles that have entered the arena via a suitable app.
Investigation of Different Selenium Sources and Supplying Methods for Selenium Enrichment of Basil Vegetable (A Case Study under Calcareous and Non-calcareous Soil Systems)
Authors: Motesharezadeh Babak , Ghorbani Samira , Alikhani Hossein Ali , Fatemi Reza , Ma Qifu
Published: June 2020

Background:

Selenium (Se) is a crucial component of selenoaminoacids and selenoproteins. Therefore, Se-enriched agricultural products can reduce health complications induced by Se deficiency.

Objective:

This research was carried out to investigate the effects of Se bio-enrichment on Basil grown in calcareous and non-calcareous soil systems and also to evaluate the changes in Se concentration in the soil after harvesting.

Methods:

The experiment executed in two calcareous and one non-calcareous soil systems, and different Se application methods (control, soil application, seed inoculation, foliar application, and soil + foliar application) were administered. Selenobacteria, a plant growth-promoting rhizobacteria (PGPR), derived from the soil was used as a biofertilizer, compared to the other Se sources.

Results:

The results showed that both soil types and the methods of Se application had significant effects (P ˂ 0.01) on root and shoot dry weights and concentrations of P, K, Zn, Fe, and Se in both of the root and shoot. Shoot dry weight of plants treated with foliar Se was maximum in the calcareous soil. Compared to the control treatment, foliar application of Se increased shoot Se content in both calcareous and non-calcareous soils by 242% and 204%, respectively. Furthermore, the increase in shoot Se concentration in calcareous soil induced by Se application increased the concentration of other nutrients in the shoot and root. Plant growth parameters and concentrations of nutrients were significantly increased by using selenobacter inoculum.

Conclusion:

The application of Se-containing compounds can improve vegetable quality. Considering the daily requirement of the human body for minerals and nutrients, enriching basil with Se can play an important role in community health. Moreover, some patents have reported the effectiveness of endophyte bacteria.
PENGARUH SPORTS MASSAGE PADA EKSTREMITAS BAWAH TERHADAP FLEKSIBILITAS PEMAIN SEPAK BOLA
Authors: Ripai Nurkholis Ipang , Graha Ali Satia
Published: June 2020

Tujuan penelitian ini adalah untuk mengetahui pengaruh sports massage pada ekstremitas bawah setelah latihan terhadap fleksibilitas. Penelitian ini merupakan penelitian quasi experimental design yang mempunyai kelompok kontrol, namun tidak dipilih secara random (nonequivalent control group design). Populasi penelitian adalah pemain tim sepak bola di Desa Argomulyo Cangkringan Sleman Yogyakarta sebanyak 20 orang dengan sampel berjumlah 10 orang. Analisis data yang digunakan dalam penelitian ini adalah uji hipotesis dilakukan dengan uji analysis of varians (Anova). Hasil penelitian menunjukkan bahwa terdapat hasil signifikan terhadap pengaruh sports massage pada fleksibilitas
Исследование фотоотклика графена, полученного методом химического осаждения из газовой фазы
Authors: Бабичев А.В. , Кадинская С.А. , Шубина K.Ю. , Васильев А.А. , Блохин А.А. , Моисеев Э.И. , Блохин С.А. , Мухин И.С. , Елисеев И.А. , Давыдов В.Ю. , Брунков П.Н. , Крыжановская Н.В. , Егоров А.Ю.
Published: June 2020

The paper presents the results of experiments in the fabrication and research of properties of photodetector structures on the basis of monolayer graphene produced by chemical vapor deposition. The base structure was the geometry of a Ta2O5 vertical microcavity with a lower dielectric SiO2/Ta2O5 distributed Bragg reflector with a resonance wavelength of about 850 nm. The conditions were optimized for the transfer and fabrication of mesas in the graphene layer on the microcavity surface. The diagnostics of the structural quality of graphene after the fabrication of mesas in the graphene layer and contact pads by Raman spectroscopy evidence the monolayer structure of graphene with a low singularity strength in its spectrum that is responsible for the structure imperfection. The photocurrent value at local optical pumping was measured.
Раскрытие энергетической щели в области точки Дирака при осаждении кобальта на поверхность (0001) топологического изолятора BiSbTeSe-=SUB=-2-=/SUB=-
Authors: Кавеев А.К. , Банщиков А.Г , Терпицкий А.Н , Голяшов В.А , Терещенко О.Е , Кох К.А , Естюнин Д.А , Шикин А.М
Published: June 2020

It was shown for the first time that Co subnanometer coaverage, being deposited by molecular beam epitaxy method onto the (0001) surface of the BiSbTeSe2 topological insulator at 330 °C, opens an energy band gap in the spectrum of topological surface states in the region of the Dirac point, with a shift in the position of the Dirac point caused by preliminary deposition of the adsorbate at room temperature. The gap band width is 21 +/- 6 meV. Temperature-dependent measurements in the 15-150 K range did not show any width changes.
Особенности транспорта в топологической фазе Hg-=SUB=-0.87-=/SUB=-Cd-=SUB=-0.13-=/SUB=-Te в условиях терагерцового фотовозбуждения
Authors: Галеева А.В. , Казаков А.С. , Артамкин А.И. , Дворецкий С.А. , Михайлов Н.Н. , Банников М.И. , Данилов С.Н. , Рябова Л.И. , Хохлов Д.Р.
Published: June 2020

In this paper, we report on photoconductivity induced by high-power laser radiation with a frequency of 2 THz in Hg0.87Cd0.13Te-based epitaxial structures. Experimental results obtained for a set of the samples with variable geometric parameters allow us to determine the photoresponse features of both bulk and nonlocal contributions to the net response. We show that the persistent photoconductivity effect originates from the non-equilibrium processes related to the bulk carrier excitation.
Особенности роста наноструктур для терагерцовых квантово-каскадных лазеров и их физические свойства
Authors: Цырлин Г.Э. , Резник Р.Р. , Жуков А.Е. , Хабибуллин Р.А. , Маремьянин К.В. , Гавриленко В.И. , Морозов С.В.
Published: June 2020

The data on the synthesis and characterization of structures for a quantum cascade terahertz laser in an AlGaAs/GaAs
material system on GaAs substrates using the molecular beam
epitaxy method are presented. The features necessary for the
implementation of such structures are considered. It was shown
that for this geometry almost single-mode lasing is observed at a
frequency of ∼ 3 THz up to a temperature of ∼ 60 K.
Спектры фотолюминесценции квантовых ям InAs/GaInSb/InAs в среднем ИК диапазоне
Authors: Уточкин В.В. , Фадеев М.А. , Криштопенко С.C. , Румянцев В.В. , Алешкин В.Я. , Дубинов А.А. , Морозов С.В. , Семягин Б.Р. , Путято М.А. , Емельянов Е.А. , Преображенский В.В. , Гавриленко В.И.
Published: June 2020

Abstract The photoluminescence spectra of waveguide AlSb/InAs/GaInSb/InAs/AlSb quantum-well heterostructures designed for the generation of radiation at interband transitions in the mid-infrared region have been studied. The experimentally detected spectral lines are correlated with calculations of the band structure.
Фотодинамика люминесценции гибридных наноструктур InP/InAsP/InP ННК, пассивированных слоем ТОРО-CdSe/ZnS КТ
Authors: Хребтов А.И. , Кулагина А.С. , Данилов В.В. , Громова Е.С. , Скурлов И.Д. , Литвин А.П. , Резник Р.Р. , Штром И.В. , Цырлин Г.Э.
Published: June 2020

The results of studies of the photodynamics of the excited state decay of a hybrid semiconductor nanostructure, which is an array of InP nanowires with InAsP nanoinsertions passivated with a layer of TOPO (trioctylphosphine oxide) containing colloidal CdSe/ZnS quantum dots, are presented. Time- and spectrally resolved measurement of photoluminescence InAsP nanoinsertions in the near infrared region at temperatures of 80 K and 293 K were made. The presence of a quasi-Langmuir layer of TOPO-CdSe/ZnS quantum dots on the surface of InP/InAsP/InP nanowires leads to an increase in the duration of radiative recombination and its dependence on temperature. It was found that the synthesized structure has a type-II heterojunction at the interface between the InAsP nanoinsertion and the InP volume. The influence of interfacial processes on increasing the duration of radiative recombination is discussed.
Una resignificación en los procesos de enseñanza del lenguaje y las matemáticas a partir de la implementación del Programa Todos a Aprender (PTA)
Authors: Díaz Díaz Alex , Uribe Juan Gabriel
Published: June 2020

Este artículo presenta los resultados de un estudio de caso desarrollado con los docentes de básica primaria de la Institución Educativa “San José del Pantano” del Municipio de Puerto Escondido en el Departamento de Córdoba. Así mismo, se pretende demostrar cómo ha sido el impacto del Programa Todos a Aprender en los procesos de enseñanza del Lenguaje y las Matemáticas. La investigación se sustenta dentro del enfoque cualitativo, con un diseño metodológico de estudio de casos, focalizando en las categorías de comunidad de aprendizaje de docentes y conocimiento didáctico de los contenidos. Se desarrolló esta investigación en tres fases: conformación y consolidación de la comunidad de aprendizaje de docentes, seguimiento del aprendizaje y conformación de equipo de trabajo hacia la meta de la excelencia educativa. Se muestran los resultados obtenidos en términos de evaluación formativa del aprendizaje, acompañamiento en el aula y desarrollo profesional docente.
Mediación y autorregulación en la formación de aprendices autónomos: una mirada desde la tarea universitaria
Authors: Fuentes Muñóz Sonia
Published: June 2020

El aprendizaje autónomo en la educación universitaria es una aspiración a lograr desde las instituciones, sus docentes y estudiantes. En busca de esta meta, el paradigma educativo ha experimentado profundas modificaciones en las últimas décadas desplazando el enfoque de aprendizaje centrado en el profesor hacia un enfoque centrado en el protagonismo del estudiante que aprende. Esta condición determina que los estudiantes deban demostrar competencias que les permitan enfrentar esta tarea con autonomía y eficiencia, evidenciando capacidades para generar sus propios conocimientos y para ello precisan de herramientas afectivas, cognitivas, actitudinales y comportamentales. Es decir, los estudiantes necesitan ser participantes activos en su proceso de aprender, ser autorreguladores de su propio aprendizaje. Variados estudios han evidenciado la importancia de los procesos de autorregulación del aprendizaje en los estudiantes de educación superior, relevando así que en esta etapa de aprendizaje, la necesidad de potenciar herramientas para aprender con autonomía, sigue siendo una deuda. Este documento destaca una experiencia de investigación que enfatiza la relevancia del primer año universitario como momento fundamental para la promoción de las herramientas anteriormente mencionadas. El estudio empírico, de diseño cuasi experimental se realizó durante el primer semestre académico. Se administró un instrumento de auto informe sobre las competencias genéricas transversales a 171 estudiantes (87, grupo experimental) (84, grupo control). Posteriormente, se desarrolló un programa de intervención orientado bajo el enfoque de la mediación cognitiva y las estrategias de autorregulación del aprendizaje evaluándose su efecto sobre las competencias ya medidas. Los resultados obtenidos mostraron que el programa de intervención, impacta efectivamente en el desarrollo de competencias universitarias, modificándose positivamente las capacidades para matemáticas, de organización, de expresión oral y de concentración. No se verificaron cambios en las competencias de lectura y de escritura. El grupo de control no evidenció cambios post test en ninguna de las áreas de competencias evaluadas.
Incidencia de las habilidades sociales en el desempeño académico de estudiantes de sexto grado
Authors: Contreras Gloria María , Benítez Olga María , Amaya De Armas Tulio
Published: June 2020

En este trabajo se evaluó la incidencia de las habilidades sociales: empatía, asertividad, trabajo en equipo y autoestima en el desempeño académico de estudiantes de sexto grado. La investigación se enmarca en un enfoque mixto (Creswell, 2009) puesto que en ella se combinan técnicas y métodos de investigación cuantitativos y cualitativos. La muestra la conformaron 155 estudiantes de sexto grado de dos instituciones del municipio de Sincelejo. Los resultados evidencian que el nivel de desarrollo de las habilidades sociales trabajo en equipo y asertividad son bastante heterogéneas tanto intra como inter grupos, es decir, su nivel de desarrollo no guarda una tendencia clara en ninguno de los dos grupos, mientras que autoestima y empatía tienen una tendencia entre en desarrollo a bien desarrolladas. Se encontró asociación estadísticamente significativa entre los desempeños logrados por los estudiantes en las áreas de matemáticas y de Ciencias Naturales, con la institución de donde provenían, lo que quiere decir que las calificaciones de los estudiantes de cada institución tendieron a agruparse alrededor de los mismos niveles de desempeño, pero diferenciables entre los grupo, ligeramente mejores para los de la institución privada. Además, el desempeño académico de los estudiantes en las áreas de Matemáticas y Ciencias Naturales,  guarda cierta relación con el estado de desarrollo de las habilidades Autoestima y Empatía.
Aprendizaje basado en problemas como estrategia para el desarrollo de competencias económicas y financieras desde el algebra
Authors: Ortega Álvarez Sandra , Carrascal Torres Nohemy
Published: June 2020

Este artículo se deriva de un estudio desarrollado con la finalidad de evaluar la efectividad relativa del aprendizaje basado en problemas (ABP), comparado con el método tradicional, para el desarrollo de la competencia económica y financiera (CEF) desde la enseñanza del álgebra, en la Institución Educativa San José de Carrizal del municipio de san Carlos Córdoba - Colombia. Se establece la estrategia de implementación de dos unidades didácticas de trabajo, fundamentadas en el enfoque ABP y organizadas alrededor de tres dominios: los contenidos (económicos y financieros), las competencias (planeación y administración), y los contextos (hogar, empresa y estado). El estudio es de tipo cuasi experimental con dos grupos: experimental y control. A estos grupos se les aplicó un pre-test, y posterior a la intervención, se les aplicó un post-test de control de equivalencia entre ellos. En el análisis de resultados se utilizaron las pruebas no paramétricas de Wilcoxon, y de Mann-Whitney. Los resultados obtenidos permitieron establecer que, en general, las competencias económicas y financieras mejoraron tanto en el grupo experimental como en el grupo control; los estudiantes del grupo control respondieron de manera más acertada en la prueba Post-test, que en la prueba Pre-test, evidenciándose que la aplicación de la metodología tradicional surte efecto, aunque la diferencia es más fuerte cuando se aplica la metodología ABP.
Las comunidades de aprendizaje y la evaluación formativa: Una experiencia significativa para transformar la práctica docente y el aprendizaje de los estudiantes desde el programa Todos a Aprender
Authors: Vargas Arteaga Jacob
Published: June 2020

Este artículo muestra los resultados de una experiencia significativa documentada como estudio de caso a partir de la implementación del programa Todos a Aprender en la Institución Educativa Playas del Viento en el municipio de San Bernardo del Viento, en el departamento de Córdoba. Se abordan las Comunidades de Aprendizaje y la Evaluación Formativa como recursos estratégicos y mediadores para la identificación de dificultades, fortalezas y para la mejora de la práctica docente. La experiencia que se ha llevado a cabo en la institución tiene un elemento especial, y es la utilización de los resultados de los aprendizajes de los estudiantes en las pruebas externas. El análisis de dichos resultados, fue clave para proponer acciones didácticas en aula para la mejora de las dificultades y la planeación de actividades utilizando diversos insumos provistos por el programa Todos a Aprender. Esto permitió hacer uso de estrategias de evaluación continua, centrada en los procesos y orientada para hacer seguimiento a las dificultades de aprendizaje detectadas en los estudiantes. A partir de los resultados del estudio y de la experiencia, se puede considerar que la consolidación de una comunidad de aprendizaje, las acciones didácticas aplicadas y las prácticas de evaluación formativa contribuyen de manera sustancial en el aprendizaje de los estudiantes.
El maestro investigador y la movilización para mejorar la calidad en educación
Authors: Doria Correa Rudy
Published: June 2020

La investigación educativa y pedagógica ha alcanzado un desarrollo importante desde finales del siglo XX, por dos razones fundamentales: por un lado, debido al impulso de ejercicios de reflexión e indagación agenciados por maestros, en la búsqueda de respuestas contundentes a las coyunturas políticas que han afectado a la educación colombiana; y por otro, la necesidad de estudiar, mediante una crítica rigurosa, los problemas concretos por los que atraviesan las instituciones educativas desde el contexto de sus currículos. Ambos asuntos responden a un mismo correlato: el imperativo de defender la educación pública, en correspondencia con la transformación de las prácticas educativas con base en nuevos enfoques pedagógicos, que derivaran en nuevas formas de enseñar y aprender. Esto, en la perspectiva de mejorar la calidad de la educación, y con ello, avanzar hacia el desarrollo social y cultural de los pueblos.
Comprensión de la Discapacidad desde las Representaciones Sociales de estudiantes y docentes en contextos rurales.
Authors: Peñata Doria Leidis Sofía , Carrascal Torres Nohemy
Published: June 2020

Comprender la educación inclusiva, entendiéndola como un proceso transversal e interdisciplinario que convoca a diferentes actores de las comunidades educativas, es uno de los grandes retos en la implementación  y empoderamiento de las políticas educativas y en la transformación de prácticas. El presente proyecto investigativo, se propuso Caracterizar las representaciones sociales (RS) de los estudiantes con discapacidad (EcD) y de los docentes de la Institución Educativa Leticia en sus prácticas pedagógicas, para que se contribuya a la comprensión frente al reconocimiento y acogida de la discapacidad, en atención las políticas actuales de educación inclusiva. Orientado desde la metodología cualitativa con corte fenomenológico y desde la teoría de las representaciones sociales, utilizando como estrategia el análisis de contenido, a partir de tres categorías: Representaciones sociales de la discapacidad, Educación inclusiva y Prácticas pedagógicas. Utilizando técnicas como la entrevista y la observación, el diario de campo, teniendo como centro de análisis  la voz de los sujetos participantes. Se logra concluir que las RS permiten develar, que se evidencia una dicotomía entre discapacidad como limitación y discapacidad como reto. La limitación desde creencias y prejuicios sustentados en parte en diagnósticos médicos ceñidos a la deficiencia y como reto,  para los EcD, porque reconocen que se enfrentan a diversas situaciones en distintos ámbitos personales y sociales, de los cuales aprenden. Por parte de algunos docentes, el reto es asumido desde su práctica como la necesidad de poner en escena sus saberes y experiencias para abordar situaciones en el aula para las cuales no se sienten preparados, sin embargo, adelantan esfuerzos para mejorar su práctica.  Destacándose la urgencia de formar a todos los actores de la comunidad educativa para favorecer ambientes de acogida y reconocimiento de la diversidad.
Sostenibilidad ambiental de la producción de quinua (Chenopodium quinoa Willd.) en los valles interandinos del Perú
Authors: Pinedo taco Rember Emilio , Gómez Pando Luz Rayda , Julca Otidiano Alberto Marcial
Published: June 2020

En los últimos diez años, la producción de quinua en el Perú se ha intensificado, pasando de las prácticas tradicionales a sistemas de producción tecnificada en función de la demanda del mercado, lo que ha ocasionado cambios en términos económicos, sociales y, principalmente, ambientales. El objetivo de la investigación fue determinar los índices de sostenibilidad ambiental en tres comunidades productoras de quinua de la zona altoandina del departamento de Ayacucho, Perú. Bajo el enfoque metodológico de análisis multicriterio, se construyó una escala en porcentaje de valoración de sostenibilidad, siendo el valor cero (0) no sostenible, y 100 el umbral máximo de sostenibilidad. Para ello, se aplicaron encuestas con preguntas estructuradas en la dimensión ambiental. Los sistemas de producción de quinua alcanzan un Indicador Ambiental (IA) de 49,43 % o un rango de sostenibilidad baja. La variable de mayor contribución fue el riesgo de erosión (51,28 %), seguido del manejo de biodiversidad (48,68 %) y la conservación de la vida del suelo (48,32 %).
Development and Usability Evaluation of a Facebook-Based Intervention Program for Childhood Cancer Patients: Mixed Methods Study
Authors: Park Bu Kyung , Kim Ji Yoon , Rogers Valerie E
Published: June 2020

Background

Childhood cancers previously considered to be incurable now have 5-year survival rates up to 84%. Nevertheless, these patients remain at risk of morbidity and mortality from therapy-related complications. Thus, patient education and self-management strategies for promoting a healthy lifestyle are of tantamount importance for improving short- and long-term health outcomes. A Facebook-based “Healthy Teens for Soaam” (a Korean term for childhood cancers) program was developed to help improve knowledge and self-management practices of teens with cancer related to their disease and treatment.

Objective

The two-fold purpose of this usability study was (1) to describe the process of developing an 8-week Facebook-based intervention program for teens with cancer, and (2) to evaluate its usability to refine the program.

Methods

Multiple phases and methods were employed to develop and evaluate the usability of the program. Study phases included: (1) needs assessment through focus group interviews and qualitative content analysis, (2) development of module content, (3) expert review and feedback on module content, (4) Facebook-based program development, (5) usability evaluation by heuristic evaluation, (6) usability evaluation by targeted end-user testing, and (7) modification and final version of the program. Usability of the final version was confirmed through feedback loops of these phases.

Results

Based on 6 focus group discussion sessions, it was determined that teens with cancer were interested in seeing stories of successful childhood cancer cases and self-management after discharge, and preferred multimedia content over text. Therefore, each Facebook module was redesigned to include multimedia materials such as relevant video clips tailored for teens. Usability assessed by heuristic evaluation and user testing revealed several critical usability issues, which were then revised. Potential end users tested the final program and perceived it to be usable and useful for teens with cancer.

Conclusions

To our knowledge, “Healthy Teens for Soaam” is the first Facebook-based intervention program for teens with cancer. We actively worked with current childhood cancer patients and survivors to develop and improve this program, achieved good usability, and met the expressed needs and preferences of target end users. This 8-week Facebook-based educational program for teens with cancer, developed as the first step of an upcoming intervention study, will be useful for improving knowledge and self-management strategies of teens.
Information Overload in Emergency Medicine Physicians: A Multisite Case Study Exploring the Causes, Impact, and Solutions in Four North England National Health Service Trusts
Authors: Sbaffi Laura , Walton James , Blenkinsopp John , Walton Graham
Published: June 2020

Background

Information overload is affecting modern society now more than ever because of the wide and increasing distribution of digital technologies. Social media, emails, and online communications among others infuse a sense of urgency as information must be read, produced, and exchanged almost instantaneously. Emergency medicine is a medical specialty that is particularly affected by information overload with consequences on patient care that are difficult to quantify and address. Understanding the current causes of medical information overload, their impact on patient care, and strategies to handle the inflow of constant information is crucial to alleviating stress and anxiety that is already crippling the profession.

Objective

This study aims to identify and evaluate the main causes and sources of medical information overload, as experienced by emergency medicine physicians in selected National Health Service (NHS) trusts in the United Kingdom.

Methods

This study used a quantitative, survey-based data collection approach including close- and open-ended questions. A web-based survey was distributed to emergency physicians to assess the impact of medical information overload on their jobs. In total, 101 valid responses were collected from 4 NHS trusts in north England. Descriptive statistics, principal component analysis, independent sample two-tailed t tests, and one-way between-group analysis of variance with post hoc tests were performed on the data. Open-ended questions were analyzed using thematic analysis to identify key topics.

Results

The vast majority of respondents agreed that information overload is a serious issue in emergency medicine, and it increases with time. The always available culture (mean 5.40, SD 1.56), email handling (mean 4.86, SD 1.80), and multidisciplinary communications (mean 4.51, SD 1.61) are the 3 main reasons leading to information overload. Due to this, emergency physicians experience guideline fatigue, stress and tension, longer working hours, and impaired decision making, among other issues. Aspects of information overload are also reported to have different impacts on physicians depending on demographic factors such as age, years spent in emergency medicine, and level of employment.

Conclusions

There is a serious concern regarding information overload in emergency medicine. Participants identified a considerable number of daily causes affecting their job, particularly the traditional culture of emergency departments being always available on the ward, exacerbated by email and other forms of communication necessary to maintain optimal, evidence-based practice standards. However, not all information is unwelcome, as physicians also need to stay updated with the latest guidelines on conditions and treatment, and communicate with larger medical teams to provide quality care.
Perspective of Medical Students on the COVID-19 Pandemic: Survey of Nine Medical Schools in Uganda
Authors: Olum Ronald , Kajjimu Jonathan , Kanyike Andrew Marvin , Chekwech Gaudencia , Wekha Godfrey , Nassozi Dianah Rhoda , Kemigisa Juliet , Mulyamboga Paul , Muhoozi Oscar Kabagambe , Nsenga Lauryn , Lyavala Musilim , Asiimwe Asaph , Bongomin Felix
Published: June 2020

Background

The coronavirus disease (COVID-19) pandemic is a global public health concern affecting over 5 million people and posing a great burden on health care systems worldwide.

Objective

The aim of this study is to determine the knowledge, attitude, and practices of medical students in Uganda on the COVID-19 pandemic.

Methods

We conducted an online, descriptive cross-sectional study in mid-April 2020, using WhatsApp Messenger. Medical students in 9 of the 10 medical schools in Uganda were approached through convenience sampling. Bloom’s cut-off of 80% was used to determine good knowledge (≥12 out of 15), positive attitude (≥20 out of 25), and good practice (≥12 out of 15).

Results

The data of 741 first- to fifth-year medical students, consisting of 468 (63%) males with a mean age of 24 (SD 4) years, were analyzed. The majority (n=626, 84%) were pursuing Bachelor of Medicine and Bachelor of Surgery degrees. Overall, 671 (91%) had good knowledge, 550 (74%) had a positive attitude, and 426 (57%) had good practices. Knowledge was associated with the 4th year of study (adjusted odds ratio [aOR] 4.1, 95% CI 1.6-10.3; P<.001). Attitude was associated with the female sex (aOR 0.7, 95% CI 0.5-1; P=.04) and TV or radio shows (aOR 1.1, 95% CI 0.6-2.1; P=.01). Practices were associated with the ≥24 years age category (aOR 1.5, 95% CI 1.1-2.1; P=.02) and online courses (aOR 1.8, 95% CI 1.1-3.2; P=.03). In total, 592 (80%) medical students were willing to participate in frontline care if called upon.

Conclusions

Medical students in Uganda have sufficient knowledge of COVID-19 and will be a large reservoir for health care response when the need arises.
Using Geocaching to Promote Active Aging: Qualitative Study (Preprint)
Authors: Fornasini Silvia , Dianti Marco , Bacchiega Alessandro , Forti Stefano , Conforti Diego
Published: June 2020

BACKGROUND

Over the past few years, the development of technologies supporting active aging has been increasing. Among the activities that promote physical exercise by using technologies is geocaching—a treasure hunt of sorts in which participants use a receiver GPS to hide or find real or virtual objects. Although this activity is particularly suited to the promotion of healthy lifestyles in older people, geocaching remains to be unexplored in this area.

OBJECTIVE

This study aimed to investigate the effectiveness of activities combining geocaching and self-tracking technologies to promote active aging, evaluate the usability of technologies, and explore the ways in which technologies have been integrated in the organizational context under examination to determine the user experience of participants.

METHODS

A group of individuals aged 65 years and older (N=14) attending a senior center managed by a social cooperative was involved in the study. Some of them created the geocaching contents, and others, split into 2 teams, participated in the game. Each participant was given a pedometer bracelet and the geocaching app. The steps taken by individual participants along with the number of caches found by each group translated into team scores.

RESULTS

The main results of the study were as follows: (1) activities in favor of active aging that involve the use of new technologies can foster the participation of elderly people; in particular, adding gamification to self-tracking can be a valid strategy to promote physical exercise among the elderly; (2) for this to happen, involvement of older people firsthand is crucial, and there must be a focus on their active involvement and empowerment in every phase of the project; and (3) the mediation of conflicts and competition that arise from the gamification could only take place because of the strong support of the organization in the form of social workers.

CONCLUSIONS

The results show that promoting active aging through technologies requires more effort than simply using these tools; it requires a wider process that involves an articulated organizational network with heterogeneous actors, technologies, and relations.
Therapeutic Alliance in Technology-Based Interventions for the Treatment of Depression: Systematic Review (Preprint)
Authors: Wehmann Eileen , Köhnen Moritz , Härter Martin , Liebherz Sarah
Published: June 2020

BACKGROUND

There is growing evidence that technology-based interventions (TBIs) are effective for the treatment of depression. As TBIs are gaining acceptance, a question arises whether good therapeutic alliance, considered a key aspect of psychotherapy, can be established without or with minimal face-to-face contact or rather changes if blended concepts are applied. While therapeutic alliance has been studied extensively in the context of face-to-face therapy, only few studies have reviewed evidence on alliance ratings in TBIs.

OBJECTIVE

The purpose of this study was to examine therapeutic alliance in technology-based psychological interventions for the treatment of depression.

METHODS

We searched Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, PsycINFO, PSYNDEX, CINAHL, clinical trial registers, and sources of grey literature for randomized controlled trials on TBIs in the treatment of adults with unipolar depression. All publications were selected according to prespecified criteria. Data were extracted by two independent reviewers.

RESULTS

A total of eight out of 98 studies (9.5%) included in the review on TBIs for depression considered therapeutic alliance as part of their evaluation. The available data covered eight different treatment conditions, including four stand-alone treatments (face-to-face psychotherapy, email, telephone, and internet program) and four combined treatments (face-to-face psychotherapy plus a smartphone app and an internet program combined with face-to-face psychotherapy, treatment as usual, or email/telephone). On average, patients rated the alliance positively across all groups. Importantly, no relevant group differences regarding therapeutic alliance sum scores were found in any of the studies. Five studies investigated the relationship between patients’ alliance ratings and treatment outcome, revealing mixed results.

CONCLUSIONS

Our results suggest that it is possible to establish a positive therapeutic alliance across a variety of different TBIs for depression, but this is based on a small number of studies. Future research needs to determine on what basis therapeutic alliance is formed in settings that do not allow for additional nonverbal cues, perhaps with adapted instruments to measure therapeutic alliance.

CLINICALTRIAL

PROSPERO International Prospective Register of Systematic Reviews CRD42016050413; https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42016050413)

INTERNATIONAL REGISTERED REPORT

RR2-10.1136/bmjopen-2018-028042
Web-based Self-help Program for Adjustment Problems After an Accident (SelFIT): Protocol for a Randomized Controlled Trial (Preprint)
Authors: Hegy Julia Katharina , Brog Noemi Anja , Berger Thomas , Znoj Hansjoerg
Published: June 2020

BACKGROUND

Accidents and the resulting injuries are among the world’s biggest health care issues, often causing long-term effects on psychological and physical health. With regard to psychological consequences, accidents can cause a wide range of burdens including adjustment problems. Although adjustment problems are among the most frequent mental health problems, there are few specific interventions available. The newly developed program SelFIT (German acronym: Selber wieder fit nach einem Unfall; “fit again after an accident”) aims to remedy this situation by offering a low-threshold, web-based self-help intervention for psychological distress after an accident.

OBJECTIVE

The overall aim is to evaluate the efficacy and cost-effectiveness of the SelFIT program plus care as usual (CAU) compared to only CAU. Furthermore, the program’s user-friendliness, acceptance, and adherence are assessed. We expect that the use of SelFIT will be associated with a greater reduction in psychological distress, greater improvement in mental and physical well-being, and greater cost-effectiveness compared to CAU.

METHODS

Adults (n=240) experiencing adjustment problems due to an accident they had between 2 weeks and 2 years before entering the study will be randomized into either the intervention or control group. Participants in the intervention group receive direct access to SelFIT. The control group receives access to the program after 12 weeks. There are 6 measurement points for both groups (baseline as well as after 4, 8, 12, 24, and 36 weeks). The main outcome is a reduction in anxiety, depression, and stress symptoms that indicate adjustment problems. Secondary outcomes include well-being, optimism, embitterment, self-esteem, self-efficacy, emotion regulation, pain, costs of health care consumption, and productivity loss, as well as the program’s adherence, acceptance, and user-friendliness.

RESULTS

Recruitment began in December 2019 and will continue at least until January 2021, with the option to extend this for another 6 months until July 2021. As of July 2020, 324 people have shown interest in participating, and 48 people have given their informed consent.

CONCLUSIONS

To the best of our knowledge, this is the first study examining a web-based self-help program designed to treat adjustment problems resulting from an accident. If effective, the program could complement the still limited offerings for secondary and tertiary prevention of psychological distress after an accident.

CLINICALTRIAL

ClinicalTrials.gov NCT03785912; https://clinicaltrials.gov/ct2/show/NCT03785912

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/21200
Investigation of Risk Factors Associated with Atmospheric Pollution on the Spread of COVID-19 Using Open Data from the Internet: Italy as an Example (Preprint)
Authors: Chen Li-Wei , Cheng Po-Hsun , Lee Hsien-Da , Chen Tin-Kai
Published: June 2020

BACKGROUND

As coronavirus disease 2019 (COVID-19) rapidly spreads worldwide, some attention has focused on studying the relationship between atmospheric pollution and the disease. Fine particulate matter with a diameter of 2.5 μm or less (PM2.5) is the most harmful form of atmospheric pollution because it can penetrate deep into the lungs and enter the blood stream unfiltered.

OBJECTIVE

To investigate the effects of risk factors associated with atmospheric pollution on the spread of COVID-19, taking Italy as an example.

METHODS

For descriptive statistical methods, the statistics of minimum, maximum, mean, median, standard deviation, rank, mean rank, and rank summation as well as time-series charts were used to depict the profiles of the relations among these input and output variables. For inferential statistical methods, Mann-Whitney U tests and Pearson, Kendall, and Spearman correlation tests were introduced to obtain more reliable conclusions regarding the study topic.

RESULTS

Statistical analysis showed that higher PM2.5 concentration and an industrial orientation may increase the spread of COVID-19. Moreover, 3-week time-shift and nonlinear relations may be optimal for use with PM2.5 concentration for predicting the spread of COVID-19.

CONCLUSIONS

Our results empirically proved that certain risk factors associated with atmospheric pollution (such as PM2.5 concentration and industrial orientation) affect the spread of COVID-19. In future analyses, additional factors that may affect the outcomes of COVID-19 as well as data from other countries will be included to obtain more complete conclusions.

CLINICALTRIAL

None.
Synthesis of Soluble Novel Polyacetylenes Containing Carbamate and Eugenol Moieties
Authors: Abdul Rahim Erwin
Published: June 2020

This study was aimed to synthesize a series of novel polyacetylenes containing carbamate and eugenol moieties. The polymerization of 1-(3,4-dimethoxyphenyl) propane-2-yl prop-2-ynylcarbamate (1), 1-(3,4-dimethoxyphenyl)propane-2-yl 3-ethynyl phenylcarbamate (2), 1-(3,4-dimethoxyphenyl)propane-2-yl 4-ethynylphenylcarbamate (3), (2S)-1-(3,4-dimethoxyphenyl)propane-2-yl 2-((prop-2ynyloxy)carbonylamino)propanoate (4) in the presence of (nbd)Rh+[ɳ6-C6H5B–(C6H5)3] as catalyst have successfully produced corresponding polyacetylenes [poly(1)–poly(4)] in high yield. The molecular weight of the synthesized polyacetylenes ranged between 13,900–18,400 g/mol. In particular, the molecular weight of poly(1) could be increased by the addition of menthol. Practically, these polymers were found to have a stable helical structure and soluble in common organic solvents.
Creating Customer Value for Enhanced Customer Satisfaction and Retention
Authors: Kabue Hellen W.
Published: June 2020

Customers are increasingly becoming sophisticated due to forces such as advancement in technology, changing social roles and globalization. As a result, customer churning is today a common reality that most companies have to deal with in order to satisfy and retain their customers. Creating customer value has emerged as one of the winning strategic tools that firms could use to gain competitive advantage in the contemporary marketing environment. This paper is an empirical study that presents a comprehensive analysis of the relationship between customer value, customer satisfaction and customer retention. Data was obtained through a survey involving clients of Commercial Banks in Kenya; the survey yielded a total of 385 responses. A self administered questionnaire was used for the customers’ survey while interviews were conducted for Management. Descriptive statistics and regression data analysis methods were employed utilizing SPSS software. The findings of the study revealed that customer value has a positive statistically significant relationship with both customer satisfaction and customer retention.
Aktivitas Antioksidan Si Ungu Mentawai
Authors: Salim Reny , Suryani Suryani
Published: June 2020

Daun ungu merupakan salah satu tumbuhan yang telah cukup banyak diteliti kekuatan antioksidannya. Namun kandungan antioksidan pada tumbuhan sangat dipengaruhi oleh lingkungan tempat tumbuh dari tumbuhan tersebut. Pengaruh ini menimbulkan ketertarikan pada peneliti untuk meneliti kekuatan antioksidan dari daun ungu yang diambil dari kepulauan Mentawai. Penelitian tentang kekuatan antioksidan daun ungu ini dilakukan dengan cara daun ungu dimaserasi menggunakan pelarut etanol 70% dalam suasana sedikit asam, setelah itu dilanjutkan dengan fraksinasi menggunakan pelarut kloroform, etil asetat, dan air. Hasil ekstrak dan fraksi diteliti kekuatan antioksidannya dengan metoda DPPH. Hasil dari penelitian diperoleh nilai IC50 ekstrak dan fraksi (kloroform, etil asetat, air) berturut-turut adalah (9; 138,56; 15,62; 16,65) µg/mL. Kategori kekuatan antioksidan dari ekstrak dan fraksi adalah kuat dan sedang.

Kata Kunci: aktivitas antioksidan, daun ungu, metoda DPPH

Purple leaves are one of the plants that have quite a lot of antioxidant power. However, the antioxidant content in plants varies greatly by the environment in which they are grown. This influence attracted interest in researchers to explore the antioxidant power of purple leaves taken from the Mentawai islands. Research on the antioxidant power of purple leaves was carried out by means of the purple leaves macerated using 70% ethanol solvent in a slightly acidic solution after that continued with fractionation using chloroform, ethyl acetate, and air solvents. The results of extracts and antioxidant extracts with the DPPH method. The results of the study obtained IC50 values of extracts and fractions (chloroform, ethyl acetate, air) respectively (9; 138.56; 15.62; 16.65) μg/mL. The category of antioxidant strength from extracts and fractions is strong and moderate.

Keywords: antioxidant activity, leaf purple, DPPH method.
Humor gráfico, radio, cine: la configuración del estereotipo del chanta en Avivato y El Gordo Villanueva
Authors: Rodríguez Riva Lucía
Published: June 2020

En este artículo son reconstruidas las trayectorias de dos personajes ficcionales, desde sus inicios hasta la llegada al cine: Avivato y El Gordo Villanueva. Ambos tuvieron sus orígenes en la prensa, pero su atractivo para los públicos fue tan importante que pasaron a la radio y el cinematógrafo. Si bien no se trata de los únicos personajes gráficos que atravesaron ese pasaje, el interés por ellos radica en que componen un tipo característico: el chanta. Los dos comparten cierta idiosincrasia y modo de comportamiento representativo de una fracción de las clases populares urbanas en Argentina. La lectura de estos casos se inscribe dentro de la historia cultural y permite observar cómo se articulaba la proyección de un personaje ficcional en su configuración transmedial. Finalmente, el análisis textual y situado de ambos filmes despliega algunas permanencias y transformaciones producidas entre los años 1949 y 1964 dentro de la industria cultural argentina.
Endocarditis infecciosa debida a candida lusitaniae en un lactante menor: Reporte de caso
Authors: Portillo-Miño José Darío , Cerón-Muñoz Esteban , Toro-Zapata Cristian , Chaucanez-Bastidas Yamile
Published: June 2020

Introducción: La endocarditis fúngica es una enfermedad infecciosa agresiva e infrecuente, considerada una emergencia en los servicios hospitalarios. Se ha evidenciado una incidencia de 0-12% del total de las admisiones pediátricas por endocarditis infecciosa. La mortalidad por Candida spp se encuentra alrededor del 50-80% en todos los casos. La Candida lusitaniae afecta principalmente a pacientes inmunocomprometidos, con uso de dispositivos intravasculares y el empleo de antibióticos de amplio espectro. Reporte de caso: Se presenta el caso de un lactante menor quien es diagnosticado con fungemia y endocarditis infecciosa por Candida lusitaniae en válvula nativa posterior a cirugía de corrección por transposición de grandes vasos. Discusión y Conclusiones: La endocarditis infecciosa por Candida lusitaniae es una entidad poco frecuente, con una prevalencia menor al 2% constituyéndose un escenario desafiante en la práctica clínica. Se describen las características de un lactante menor quien presentó endocarditis fúngica ya definidas en la literatura mundial. Es imprescindible la detección temprana y una intervención terapéutica vertiginosa; puesto que, la persistencia del inoculo, la resistencia antimicótica y el retraso en el diagnóstico conllevan a una condición amenazante para la vida del paciente.