bluuebunny/crossref_metadata_2025 huggingface dataset:
A Comparison of Traffic Flow Performance of Roundabouts and Signalized Intersections: A Case Study in Nigde
Authors: Demir Hatice G. , Demir Yusuf K.
Published: July 2020

Background:

Intersections affect the safety and capacity of urban traffic. Therefore, the design and selection of the type of intersection need to be made very carefully. According to the demand level, a different intersection can be designed. Signalized intersections are one of the intersection types in which the sequence and duration of the flow at the intersection are provided by the lights. Generally, this type of intersection is used on roads with high traffic volume. Modern roundabouts are one of the types of circular intersections that provide advantages over other types of intersection in terms of smooth operation and safety. Modern roundabouts exist in several types today worldwide. In practice, the distinction about the kinds of roundabouts would not be fully clarified; as a result, queuing and delay can be seen as negative effects.

Methods:

In this study, to make a distinction and clarify the kinds of roundabouts, first, the roundabouts types are introduced according to geometric and operational aspects. A signalized intersection, where a circular island is placed and also signalized, was investigated in terms of capacity, delay, and emissions located in Niğde. The traffic flow performance of the current state (nested signalized roundabout) was calculated with HCM Method (for signalized intersection) using SIDRA and compared with roundabout solutions of the intersection with HCM6 (for roundabout) method using SIDRA Intersection analysis software.

Results:

From the results of the intersection capacity analysis study based on HCM6, it was seen that the application of a roundabout scenario (intersection considered as a modern roundabout) showed higher performance at the intersections than the intersection having a secondary signal. Capacity increased to 67.8%, the average delay decreased to 72.8% and 95th percentile queue dropped to 82.2%.

Conclusion:

Roundabout controlling instead of a nested signal system can be an example of the increase in the performance of traffic flow. This highlights the importance of choosing the appropriate roundabout design.
Improvement in Ethanol Yield from Lignocellulo-Starch Biomass using Saccharomyces cerevisiae alone or its Co-culture with Scheffersomyces stipitis
Authors: Mithra Madhanamohanan G. , Padmaja Gouri
Published: July 2020

Background:

Literature on ethanol production from Lignocellulo-Starch Biomass (LCSB) containing starch besides cellulose and hemicellulose, is scanty. Fed-Batch Separate Hydrolysis And Fermentation (F-SHF) was earlier found more beneficial than Fed-Batch Simultaneous Saccharification and Fermentation (F-SSF).

Objective:

The study aimed at modification of the saccharification and fermentation strategies by including a prehydrolysis step prior to the SSF and compared the ethanol yields with co-culture fermentation using hexose-fermenting Saccharomyces cerevisiae and pentose-fermenting Scheffersomyces stipitis.

Methods:

Fed-batch hybrid-SSF and Fed-Batch Separate Hydrolysis and Co-culture Fermentation (F-SHCF) in improving ethanol yield from Steam (ST) or Dilute Sulfuric Acid (DSA) pretreated LCSBs (peels of root and vegetable crops) were studied.

Results:

There was a progressive build-up of ethanol during F-HSSF up to 72h and further production up to 120h was negligible, with no difference among pretreatments. Despite very high ethanol production in the initial 24h of fermentation by S.cerevisiae under F-SHCF, the further increase was negligible. A rapid hike in ethanol production was observed when S. stipitis was also supplemented because of xylose conversion to ethanol.

Conclusion:

While ST gave higher ethanol (296-323 ml/kg) than DSA under F-HSSF, the latter was advantageous under F-SHCF for certain residues. Prehydrolysis (24h; 50°C) enhanced initial sugar levels favouring fast fermentation and subsequent saccharification and fermentation occurred concurrently at 37°C for 120h, thus leading to energy saving and hence F-HSSF was advantageous. Owing to the low hemicellulose content in LCSBs, the relative advantage of co-culture fermentation over monoculture fermentation was not significant.
Amantadine Might be Used as a Drug for SARS-Cov-2 Treatment?
Authors: Ozunal Zeynep Gunes , Sahin Sevki
Published: July 2020

Coronavirus Disease 2019 (COVID-19) infection, the pandemics, caused by severe acute respiratory
syndrome coronavirus 2 (SARS-CoV-2) has no known effective radical pharmacotherapy and
just supportive approach at present. Amantadine is a drug used in Parkinson’s disease and other parkinsonisms;
and is known to increase indirectly dopamine by antagonistic effects at the N-methyl-Daspartate
(NMDA) receptor by increasing the release and blocking the reuptake of dopamine. Initially,
amantadine was approved as an antiviral drug. We hypothesize that if amantadine is considered its antiviral,
immunological and neurostimulant effects might be useful in the supportive treatment of SARSCoV-
2 cases, especially those who developed acute respiratory failure with decreased vigilance and are
being monitored in the intensive care unit. Further phase III clinical trials are needed.
Relationship Between Depression and the Use of Mobile Technologies and Social Media Among Adolescents: Umbrella Review
Authors: Arias-de la Torre Jorge , Puigdomenech Elisa , García Xavier , Valderas Jose M , Eiroa-Orosa Francisco Jose , Fernández-Villa Tania , Molina Antonio J , Martín Vicente , Serrano-Blanco Antoni , Alonso Jordi , Espallargues Mireia
Published: July 2020

Background

Despite the relevance of mobile technologies and social media (MTSM) for adolescents, their association with depressive disorders in this population remains unclear. While there are previous reviews that have identified the use of MTSM as a risk factor for developing depression, other reviews have indicated their possible preventive effect.

Objective

The aim of this review was to synthesize the current evidence on the association between MTSM use and the development or prevention of depressive disorders in adolescents.

Methods

An umbrella review was conducted using information published up to June 2019 from PubMed/MEDLINE, PsycINFO, Web of Science, and The Cochrane Library. Systematic reviews focusing on the adolescent population (up to 20 years old) and depression and its potential relationship with MTSM use were included. Screening of titles, abstracts, and full texts was performed. After selecting the reviews and given the heterogeneity of the outcome variables and exposures, a narrative synthesis of the results was carried out.

Results

The search retrieved 338 documents, from which 7 systematic reviews (3 meta-analyses) were selected for data extraction. There were 11-70 studies and 5582-46,015 participants included in the 7 reviews. All reviews included quantitative research, and 2 reviews also included qualitative studies. A statistically significant association between social media and developing depressive symptoms was reported in 2 reviews, while 5 reviews reported mixed results.

Conclusions

Excessive social comparison and personal involvement when using MTSM could be associated with the development of depressive symptomatology. Nevertheless, MTSM might promote social support and even become a point of assistance for people with depression. Due to the mixed results, prospective research could be valuable for providing stronger evidence.
Model-Based Algorithms for Detecting Peripheral Artery Disease Using Administrative Data From an Electronic Health Record Data System: Algorithm Development Study
Authors: Weissler Elizabeth Hope , Lippmann Steven J , Smerek Michelle M , Ward Rachael A , Kansal Aman , Brock Adam , Sullivan Robert C , Long Chandler , Patel Manesh R , Greiner Melissa A , Hardy N Chantelle , Curtis Lesley H , Jones W Schuyler
Published: July 2020

Background

Peripheral artery disease (PAD) affects 8 to 10 million Americans, who face significantly elevated risks of both mortality and major limb events such as amputation. Unfortunately, PAD is relatively underdiagnosed, undertreated, and underresearched, leading to wide variations in treatment patterns and outcomes. Efforts to improve PAD care and outcomes have been hampered by persistent difficulties identifying patients with PAD for clinical and investigatory purposes.

Objective

The aim of this study is to develop and validate a model-based algorithm to detect patients with peripheral artery disease (PAD) using data from an electronic health record (EHR) system.

Methods

An initial query of the EHR in a large health system identified all patients with PAD-related diagnosis codes for any encounter during the study period. Clinical adjudication of PAD diagnosis was performed by chart review on a random subgroup. A binary logistic regression to predict PAD was built and validated using a least absolute shrinkage and selection operator (LASSO) approach in the adjudicated patients. The algorithm was then applied to the nonsampled records to further evaluate its performance.

Results

The initial EHR data query using 406 diagnostic codes yielded 15,406 patients. Overall, 2500 patients were randomly selected for ground truth PAD status adjudication. In the end, 108 code flags remained after removing rarely- and never-used codes. We entered these code flags plus administrative encounter, imaging, procedure, and specialist flags into a LASSO model. The area under the curve for this model was 0.862.

Conclusions

The algorithm we constructed has two main advantages over other approaches to the identification of patients with PAD. First, it was derived from a broad population of patients with many different PAD manifestations and treatment pathways across a large health system. Second, our model does not rely on clinical notes and can be applied in situations in which only administrative billing data (eg, large administrative data sets) are available. A combination of diagnosis codes and administrative flags can accurately identify patients with PAD in large cohorts.
A Mobile Gaming Intervention for Persons on Pre-Exposure Prophylaxis: Protocol for Intervention Development and Randomized Controlled Trial
Authors: Whiteley Laura , Olsen Elizabeth , Mena Leandro , Haubrick Kayla , Craker Lacey , Hershkowitz Dylan , Brown Larry K
Published: July 2020

Background

In the United States, young minority men who have sex with men (MSM) are the most likely to become infected with HIV. Pre-exposure prophylaxis (PrEP) is an efficacious and promising prevention strategy. However, PrEP’s safety and effectiveness can be greatly compromised by suboptimal adherence to treatment. To maximize the positive impact of PrEP, it is necessary to combine its prescription with cost-effective behavioral interventions that promote adherence and decrease HIV risk behaviors. In this project, we developed a theoretically informed app/gaming intervention to engage young MSM in learning information, practicing behaviors, and improving motivation for HIV preventative behaviors and PrEP adherence.

Objective

The goal of this project was to develop and test a cutting-edge, engaging, and entertaining app/gaming intervention for improving adherence to PrEP and building HIV prevention knowledge, skills, and behavior.

Methods

This study was conducted in two phases. In the developmental phase, we conducted qualitative interviews with young MSM (n=20) to guide the development of the gaming intervention. In the randomized controlled trial, we tested the preliminary efficacy of the gaming intervention compared to a comparison condition among young MSM. Subjects were recruited from the University of Mississippi Medical Center HIV/STI testing clinics (n=60).

Results

Institutional review board approval was received in February 2015. Research activities began in June 2015 and are still ongoing.

Conclusions

This app/gaming intervention aimed to improve PrEP adherence and HIV preventative behaviors in young MSM. Engaging young MSM in learning information, practicing behaviors, and improving motivation for increased adherence to PrEP has the potential to decrease HIV seroconversion. It is important to develop interventions that are enjoyable, engaging, and easily incorporated into clinical settings.

Trial Registration

ClinicalTrials.gov RCT02611362; https://tinyurl.com/y65gkuwr

International Registered Report Identifier (IRRID)

DERR1-10.2196/18640
Decompensation in Critical Care: Early Prediction of Acute Heart Failure Onset
Authors: Essay Patrick , Balkan Baran , Subbian Vignesh
Published: July 2020

Background

Heart failure is a leading cause of mortality and morbidity worldwide. Acute heart failure, broadly defined as rapid onset of new or worsening signs and symptoms of heart failure, often requires hospitalization and admission to the intensive care unit (ICU). This acute condition is highly heterogeneous and less well-understood as compared to chronic heart failure. The ICU, through detailed and continuously monitored patient data, provides an opportunity to retrospectively analyze decompensation and heart failure to evaluate physiological states and patient outcomes.

Objective

The goal of this study is to examine the prevalence of cardiovascular risk factors among those admitted to ICUs and to evaluate combinations of clinical features that are predictive of decompensation events, such as the onset of acute heart failure, using machine learning techniques. To accomplish this objective, we leveraged tele-ICU data from over 200 hospitals across the United States.

Methods

We evaluated the feasibility of predicting decompensation soon after ICU admission for 26,534 patients admitted without a history of heart failure with specific heart failure risk factors (ie, coronary artery disease, hypertension, and myocardial infarction) and 96,350 patients admitted without risk factors using remotely monitored laboratory, vital signs, and discrete physiological measurements. Multivariate logistic regression and random forest models were applied to predict decompensation and highlight important features from combinations of model inputs from dissimilar data.

Results

The most prevalent risk factor in our data set was hypertension, although most patients diagnosed with heart failure were admitted to the ICU without a risk factor. The highest heart failure prediction accuracy was 0.951, and the highest area under the receiver operating characteristic curve was 0.9503 with random forest and combined vital signs, laboratory values, and discrete physiological measurements. Random forest feature importance also highlighted combinations of several discrete physiological features and laboratory measures as most indicative of decompensation. Timeline analysis of aggregate vital signs revealed a point of diminishing returns where additional vital signs data did not continue to improve results.

Conclusions

Heart failure risk factors are common in tele-ICU data, although most patients that are diagnosed with heart failure later in an ICU stay presented without risk factors making a prediction of decompensation critical. Decompensation was predicted with reasonable accuracy using tele-ICU data, and optimal data extraction for time series vital signs data was identified near a 200-minute window size. Overall, results suggest combinations of laboratory measurements and vital signs are viable for early and continuous prediction of patient decompensation.
An Index for Lifting Social Distancing During the COVID-19 Pandemic: Algorithm Recommendation for Lifting Social Distancing (Preprint)
Authors: Chen Sam Li-Sheng , Yen Amy Ming-Fang , Lai Chao-Chih , Hsu Chen-Yang , Chan Chang-Chuan , Chen Tony Hsiu-Hsi
Published: July 2020

BACKGROUND

Implementing and lifting social distancing (LSD) is an urgent global issue during the COVID-19 pandemic, particularly when the travel ban is lifted to revive international businesses and economies. However, when and whether LSD can be considered is subject to the spread of SARS-CoV-2, the recovery rate, and the case-fatality rate. It is imperative to provide real-time assessment of three factors to guide LSD.

OBJECTIVE

A simple LSD index was developed for health decision makers to do real-time assessment of COVID-19 at the global, country, region, and community level.

METHODS

Data on the retrospective cohort of 186 countries with three factors were retrieved from a publicly available repository from January to early July. A simple index for guiding LSD was measured by the cumulative number of COVID-19 cases and recoveries, and the case-fatality rate was envisaged. If the LSD index was less than 1, LSD can be considered. The dynamic changes of the COVID-19 pandemic were evaluated to assess whether and when health decision makers allowed for LSD and when to reimplement social distancing after resurgences of the epidemic.

RESULTS

After large-scale outbreaks in a few countries before mid-March (prepandemic phase), the global weekly LSD index peaked at 4.27 in March and lasted until mid-June (pandemic phase), during which most countries were affected and needed to take various social distancing measures. Since, the value of LSD has gradually declined to 0.99 on July 5 (postpandemic phase), at which 64.7% (120/186) of countries and regions had an LSD<1 with the decile between 0 and 1 to refine risk stratification by countries. The LSD index decreased to 1 in about 115 days. In addition, we present the results of dynamic changes of the LSD index for the world and for each country and region with different time windows from January to July 5. The results of the LSD index on the resurgence of the COVID-19 epidemic in certain regions and validation by other emerging infectious diseases are presented.

CONCLUSIONS

This simple LSD index provides a quantitative assessment of whether and when to ease or implement social distancing to provide advice for health decision makers and travelers.
ИССЛЕДОВАНИЕ ТРЕХОСЕВОГО МИКРОМЕХАНИЧЕСКОГО АКСЕЛЕРОМЕТРА
Authors: Лысенко И.Е. , Ежова О.А. , Ткаченко А.В. , Науменко Д.В.
Published: July 2020

Исследована конструкция сенсора линейного ускорения с тремя осями чувствительности. На основании результатов исследования определены чувствительность трехосного сенсора, перекрестная чувствительность, длительность переходных процессов. В рамках работы изготовлены опытные образцы сенсоров.

The paper highlights the linear acceleration sensor design with three axis of sensitivity the basis of the research results Three-axis device sensitivity, cross-sensitivity, and duration transients have been specified on. As part of the work the experimental sensor prototypes have been fabricated.
ИССЛЕДОВАНИЕ МАГНИТОРЕЗИСТИВНЫХ НАНОСТРУКТУР С МАГНИТОСТРИКЦИОННЫМ ЭФФЕКТОМ ДЛЯ УСТРОЙСТВ МАГНИТНОЙ СТРЕЙНТРОНИКИ
Authors: Жуков Д.А. , Амеличев В.В. , Костюк Д.В. , Крикунов А.И. , Васильев Д.В. , Казаков Ю.В. , Орлов Е.П. , Беляков П.А.
Published: July 2020

Представлены результаты экспериментальных исследований магнитострикционных и магниторезистивных свойств тонкопленочных многослойных наноструктур Ta/FeNiCo/CoFe/Ta и Ta/FeNiCo/CoFeВ/Ta на окисленных кремниевых подложках диаметром 100 мм. Экспериментально установлена зависимость величины анизотропного магниторезистивного эффекта от величины механических деформаций в экспериментальных образцах наноструктур.

The paper presents the results of experimental studies of the magnetostriction and magnetoresistive properties of thin-film multilayer nanostructures Ta/FeNiCo/CoFe/Ta and Ta/FeNiCo/CoFeB/Ta on oxidized silicon substrates with a diameter of 100 mm. The dependence of the magnitude of the anisotropic magnetoresistive effect on the magnitude of mechanical strains in experimental samples of nanostructures has been experimentally established.
ТЕХНОЛОГИЧЕСКАЯ ЛИНЕЙКА ДЛЯ МОДИФИЦИРОВАНИЯ ПОЛУПРОВОДНИКОВ И КОРРЕКЦИИ ХАРАКТЕРИСТИК ПОЛУПРОВОДНИКОВЫХ ПРИБОРОВ МЕТОДАМИ ИМПЛАНТАЦИИ ИОНОВ ВЫСОКИХ ЭНЕРГИЙ НА УНУ «ЦИКЛОТРОН ФТИ»
Authors: Козлов В.А. , Кудояров М.Ф. , Ефанов В.М.
Published: July 2020

В работе рассмотрены возможности технологии модифицирования полупроводников (Si, GaAs, SiC) и коррекции характеристик полупроводниковых приборов с использованием методов имплантации ионов высоких энергий. Обсуждаются особенности построения технологической линейки и оборудования для выполнения процессов обработки пластин большого диаметра на базе циклотрона ФТИ им. А. Ф. Иоффе.

The paper considers the main possible applications of the technology for semiconductor material modification and correction of semiconductor device characteristics via high energy ion implantation. Features of the technological line and equipment for treatment of large diameter wafers have been discussed on the example of the Ioffe Institute cyclotron application.
СИСТЕМЫ РЕНТГЕНОВСКОЙ ИНСПЕКЦИИ ЭЛЕКТРОННЫХ УЗЛОВ ОТЕЧЕСТВЕННОГО ПРОИЗВОДСТВА
Authors: Устинов А.О.
Published: July 2020

Разработан высокочувствительный рентгеновский детектор на основе КМОП-сенсора с размером пикселя 50 мкм и образец системы инспекции для задач неразрушающего контроля электронных узлов. Осуществлены испытания разработанной системы контроля на печатной плате в режиме реального времени с детектированием зоны контакта шарика BGA с металлизацией платы и выводом микросхемы.

The paper highlights a high sensitivity x-ray flat panel detector and inspection system prototype for nondestructive testing of electronic parts. The detector is based on CMOS sensor with pixel pitch 50 um. The inspection system has been tested in real time mode using printed circuit board with detection of BGA ball contact with board metallization and IC.
НЕЙРОМОРФНЫЙ ПРОЦЕССОР «АЛТАЙ» ДЛЯ ЭНЕРГОЭФФЕКТИВНЫХ ВЫЧИСЛЕНИЙ
Authors: Гришанов Н.В. , Зверев А.В. , Ипатов Д.Е. , Канглер В.М. , Катомин М.Н. , Коденко Н.И. , Кострицын И.А. , Макаров Ю.С. , Мамычев В.И. , Павлов П.В. , Панченко К.Е. , Полстянкин А.В.
Published: July 2020

Предложена масштабируемая нейроморфная архитектура для исполнения импульсных нейронных сетей, разработан прототип СБИС с данной архитектурой. Проведены оценки энергопотребления проекта прототипа СБИС при распознавании тестовых изображений из наборов MNIST и CIFAR-10.

The paper presents a scalable neuromorphic architecture for spiking neural network inference. A VLSI prototype based on this architecture has been developed. The energy consumption of the VLSI prototype project was estimated during a test image recognition from the MNIST and CIFAR-10 sets.
ИСПОЛЬЗОВАНИЕ НЕЙРОСЕТЕВЫХ АЛГОРИТМОВ В ЗАДАЧАХ ВЫЧИСЛИТЕЛЬНОЙ ЛИТОГРАФИИ
Authors: Балан Н.Н. , Березин А.А. , Горнев Е.С. , Иванов В.В. , Ипатова Е.В. , Кузовков А.В. , Шканакина М.Д.
Published: July 2020

Работа посвящена вопросам применения нейросетевых алгоритмов в литографических расчетах. Дан обзор основного круга задач вычислительной литографии, допускающих целесообразность применения нейросетей для их решения. Описаны преимущества и недостатки нейросетевых решений, рекомендуемых для использования в рассматриваемых задачах.

This paper is dedicated to the task of applying neural network-based algorithms to lithographic calculations. It reviews the family of problems in computational lithography to which neural networks are applicable. Pros and cons of such solutions have been discussed.
ПРОЦЕССОРЫ, ПАМЯТЬ И ПРОГРАММНОЕ ОБЕСПЕЧЕНИЕ ДЛЯ ЭФФЕКТИВНОЙ РЕАЛИЗАЦИИ НЕЙРОННЫХ СЕТЕЙ
Authors: Тельминов О.А. , Горнев Е.С. , Теплов Г.С.
Published: July 2020

Рассмотрен ландшафт искусственного интеллекта (ИИ) в области реализации перспективных нейронных сетей третьего поколения - спайковых нейронных сетей. Выявлены закономерности в принципах построения современной элементной базы и дана оценка возможности развития перспективной элементной базы. Предложен вариант встраивания деятельности компании в существующую экосистему ИИ.

The paper considers the emerging landscape of artificial intelligence in the field of the third generation spiking neural networks. Some patterns principles of modern hardware components have been discovered, as well as possibilities of advanced components development. The Company’s ways of incorporation into state-of-the-art artificial intelligence ecosystem has been proposed.
Evidencias de fallas de control y fraudes en los resultados de la prueba ENLACE en el nivel medio superior
Authors: Gutiérrez Pulido Humberto , Aguiar Barrera Martha Elena , Gutiérrez González Porfirio
Published: July 2020

Se estudia el contexto y la evolución de los resultados de la prueba ENLACE, los cuales experimentaron enormes incrementos en matemáticas en todos los niveles. Contrario a lo establecido en los manuales, los niveles de dominio en educación media superior (EMS) se obtuvieron directamente de los puntajes. Del análisis de 6.4 millones de puntajes individuales en matemáticas en EMS, se demuestra que el incremento es generalizado y paulatino durante el periodo (2008-2014), lo cual se atribuye a que los ajustes hechos a la prueba o a sus resultados favorecieron dicho patrón. Además, se identifica un importante sesgo en la distribución de dichos puntajes de los últimos años, que refleja claramente las fallas de control y los fraudes en ENLACE. Esto fue lo que propició tales incrementos desproporcionados, incluidos 75 mil jóvenes que en 2013 y 2014 obtuvieron resultados perfectos. En contraste, en lectura en EMS sus resultados no se inflaron.
integración curricular a las políticas de innovación en la educación superior mexicana
Authors: Díaz Barriga Ángel
Published: July 2020

Este ensayo analiza tres temas: la estructura curricular por asignaturas, la estructura curricular integrada y la innovación en la educación superior. Parte de que las llamadas innovaciones curriculares no han producido un cambio significativo en las prácticas docentes de los últimos treinta años. Si bien el término innovación consigna un alto número de referencias en la literatura especializada, una de las razones que dificultan el cambio es que los planes de estudio se organizan por asignaturas, esto es, en torno a las disciplinas, cuando la realidad se presenta en situaciones complejas. Esta organización tiende a segmentar el conocimiento e impide integrarlo con la realidad social y profesional. Se revisan los proyectos curriculares integrados que funcionaron en México en los años setenta del siglo pasado, señalando sus aspectos relevantes y limitaciones. Se plantea que, a principios del siglo XXI, algunos países vuelven a intentar establecer un plan de estudios integrado.
Pengaruh Direct Reading Thinking Activity Terhadap Keterampilan Membaca Pemahaman di Sekolah Dasar
Authors: Ardhian Trio , Trisniawati Trisniawati
Published: July 2020

Penelitian ini bertujuan untuk mengetahui persepsi siswa setelah mengikuti strategi Directed Reading Thinking Activities (DRTA). Metode penelitian yang digunakan adalah metode eksperimen dan teknik analisis data yang digunakan dalam penelitian ini adalah regresi sederhana. Sebelum dilakukan analisis regresi, maka dilakukan uji kualitas data yang meliputi uji validitas dan uji reliabilitas. Selain itu juga dilakukan uji normalitas untuk mengetahui distribusi data penelitian dan juga ui homogenitas. Hasil analisis data menunjukkan bahwa indikator yang digunakan dalam penelitian ini valid, reliable, berdistribusi normal namun tidak homogen. Hasil penelitian menunjukkan bahwa strategi Directed Reading Thinking Activities (DRTA) berpengaruh signifikan terhadap ketrampilan membaca pemahaman siswa yang dibuktikan dengan hasil evaluasi membaca pemahaman yang lebih baik dibandingkan dengan metode konvensional.Kesimpulannya penelitian ini adalah penerapan strategi Directed Reading Thinking Activity (DRTA) sangat efektif dalam meningkatkan keterampilan membaca pemahaman. Keterampilan membaca pemahaman siswa mencapai nilai rata-rata kelas 82,22. Nilai tertinggi adalah 100 sedangkan nilai terendah adalah 70. Ketuntasan belajar mencapai sebanyak 18 siswa atau sebesar 100%. Pengaruh penerapan strategi Directed Reading Thinking Activity (DRTA) terhadap keterampilan membaca pemahaman pada siswa, mencapai nilai koefisien sebesar 0,988 dan nilai signifikansi sebesar 0,031
Peningkatan Hasil Belajar Siswa Melalui Model Contextual Teaching Learning di Sekolah Dasar
Authors: Wardani Rini Setyo , Kumalasari Ratna Nur
Published: July 2020

Penelitian ini dilatarbelakangi oleh rendahnya kemampuan matematika anak kelas I sekolah dasar dalam memahami konsep membandingkan dua bilangan. Tujuan dari penelitian ini untuk mendeskripsikan peningkatan hasil belajar matematika siswa kelas I melalui penerapan model contextual teaching and learning. Subjek penelitian ini adalah siswa kelas I C yang berjumlah 28 orang. Rancangan penelitian tindakan kelas ini menggunakan model Kemmis dan Mc Taggart. Teknik pengumpulan data dalam penelitian ini menggunakan lembar observasi, lembar tes, dan dokumentasi selama pembelajaran. Perkembangan proses pembelajaran dari siklus I ke siklus II mengalami peningkatan, baik dari segi aktivitas guru dan siswa selama pembelajaran maupun hasil belajar siswa. Aktivitas guru pada siklus I ke siklus II mengalami peningkatan sebesar 11,77% dari 76,47% menjadi 88,24% dan aktivitas siswa mengalami peningkatan sebesar 17,31% dari 67% menjadi 84,31%. Selain itu, ketuntasan hasil belajar siswa secara klasikal dari siklus I ke siklus II juga mengalami peningkatan sebesar 17,86% dari 75% menjadi 92,86%. Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa model pembelajaran contextual teaching and learning dapat meningkatkan hasil belajar siswa pada muatan matematika Tema 5 Subtema 3
Realimentación en procesos de aprendizaje y permanencia estudiantil en Educación Superior a Distancia
Authors: Chaves Torres Anívar , Ceballos Villada Zeneida Rocio
Published: July 2020

En Colombia, como en muchos otros países, uno de los problemas más apremiantes que enfrenta el Sistema educativo es el bajo índice de permanencia y graduación de estudiantes. Este problema se siente mucho más en programas de Educación a Distancia, donde menos del 30% de los estudiantes que ingresan logra terminar sus estudios.Ante esta situación, en la Universidad Nacional Abierta y a Distancia (UNAD), institución que acoge a más de cien mil estudiantes, se llevó a cabo un estudio con el propósito de analizar los factores que se asocian a la permanencia estudiantil. La investigación se orientó con el paradigma cualitativo, se aplicó el método etnográfico y, como técnicas de acopio de información, se utilizaron la entrevista en profundidad y los grupos focales, con estudiantes y docentes de la institución.Entre los hallazgos relevantes, se destaca que la realimentación constante, en las interacciones estudiante-docente, contribuye de manera significativa al aprendizaje, la autorregulación, la motivación y la permanencia de los estudiantes. La realimentación surge como un proceso dialógico y cíclico que mantiene a los actores del proceso educativo enfocados en sus metas y conscientes de su desempeño, del progreso en el aprendizaje y el desarrollo de competencias.
El La reforma educativa de 1870 en la formación de maestros y construcción de ciudadanía
Authors: Castillo Alejandro
Published: July 2020

Este artículo analiza los principios generales de la Reforma educativa liberal del siglo XIX, su aplicación y el impacto que produjeron en la sociedad decimonónica las reformas organizativas, curriculares y pedagógicas propuestas. Dentro de la tradición de la educación colombiana y la transformación de sus instituciones escolares, la Reforma liberal significó un momento decisivo en el progreso y la transformación de las prácticas y las relaciones del sujeto con el saber, el estudiante con el maestro y el ciudadano con el Estado. La Reforma de 1870 inició el camino de la formación de maestros. A medida que se revisan los principios pedagógicos de la Reforma, se enfatiza en los procesos de construcción de ciudadanía propuestos por los liberales, quienes controlaban el poder político. Así mismo, se señalan las oposiciones del partido conservador y la Iglesia Católica para la aplicación de esa Reforma. El proyecto educativo liberal terminó tras la Guerra de las escuelas y la instauración de la Regeneración conservadora.
Derechos femeninos en Colombia: una aproximación al sufragio y la educación
Authors: Zuleta Medina Alejandra
Published: July 2020

Este artículo analiza las luchas y batallas de las colombianas por su reconocimiento como ciudadanas a través del sufragio y la relación con el acceso a todos los niveles educativos. A mediados del siglo XX, en Colombia como en otros países de América Latina, los gobiernos se encontraban en constantes pugnas que enfrentaban partidos políticos, no obstante, dichas diferencias se olvidaban cuando se trataba de la participación femenina en la sociedad, puesto que lograban ponerse de acuerdo en frenar las aspiraciones de las mujeres. Al pasar de los años, las luchadoras resilientes apoyadas por algunos hombres visionarios lograron su derecho al voto en 1954, sin embargo, no fue posible ejercerlo hasta 1957. Las conclusiones se orientan hacia la ausencia de iniciativas estatales y sociales altruistas, salvo las emprendidas por las mismas mujeres a favor de sus derechos.
O HEROÍSMO DOS BRUTOS: REMINESCÊNCIAS DO GROTESCO E DO ROMÂNTICO EM FRANKENSTEIN E CARVÃO ANIMAL
Authors: Lima Diego Henrique de
Published: July 2020

O presente artigo tem como objetivo refletir sobre a relação de influência entre a literatura de Mary Shelley e Ana Paula Maia. O que a obra da autora inglesa tem em comum com a autora brasileira em relação à elaboração de personagens anti-heróis e esteticamente grotescos. A tessitura dos protagonistas tanto de Frankenstein, de Shelley, quanto de Carvão Animal, de Maia, constroem um caso de influência atual dos modelos criados na era pré-vitoriana e na vitoriana. A partir dos conceitos de estranho (Umheiliche), de Freud, e do grotesco, por Bakhtin e Kayser, intencionamos discernir a rede de correspondências entre os protagonistas de Frankenstein e Carvão Animal.PALAVRAS-CHAVE: Anti-herói; Romantismo; Mary Shelley; Ana Paula Maia.
THE BRONTËS ON THE STAGE: AN INTERVIEW WITH BLAKE MORRISON
Authors: Fritsch Valter Henrique De Castro
Published: July 2020

Entrevista com o dramaturgo Blake Morrison, autor da peça We are Three Sisters.
Effects of different types of sugars and plant growth regulators on kohlrabi seedling growth and development in vitro
Authors: Cosic Tatjana , Savic Jelena , Raspor Martin , Cingel Aleksandar , Ghalawnji Nabil , Vinterhalter Branka , Ninkovic Slavica
Published: July 2020

Kohlrabi (Brassica oleracea var. gongylodes), with its edible stem tuber formed at the base of the plant stem, presents a valuable source of nutrients. The potential effects of plant growth regulators (PGRs), as well as various concentrations of different sugars on the in vitro development of kohlrabi were studied. Ten-day-old kohlrabi seedlings were cultivated in vitro for 5 weeks at 18?2?C on half-strength MS media containing different concentrations of carbon source such as sucrose, fructose, glucose, xylose and mannitol, combined with or without specific plant growth regulators (N6-benzyladenine (BA), gibberellic acid (GA3), 2,3,5-triiodobenzoic acid (TIBA)). Results showed no tuber formation in all treatments, but growth and development of treated kohlrabi seedlings was significantly affected in a distinctive manner, with a variety of morphological traits being altered in comparison to matching controls.
Kapabilitas Pemasaran dalam Meningkatkan Kinerja Pemasaran pada Coffee Shop
Authors: Suciati Famela Sophya , Danial R. Deni Muhammad , Ramdan Asep Muhamad
Published: July 2020

The purpose of this research is to determine the effect of marketing capabilities in improving marketing performance. The method in this research uses a quantitative method with an associative approach. This research uses a sample of 37 coffee shops with the owner being the respondent. The technique in order to collect a number of data used for this research is primary data, namely observation, interviews and questionnaires and secondary data used is literature study. This research conducts testing to determine the valid and reliable data used. The technique to process a number of data is done using the correlation coefficient test, the coefficient of determination test, the simple linear regression test and the hypothesis test used is the significance test (T test). The conclusions of this research indicate that there is a significant influence of the marketing capability variable on marketing performance.
Analisis SWOT Pada Pemasaran Batik Benang Bintik Lestari Indah Palangka Raya
Authors: Alexandro Rinto , Putri Windy Utami , Nurmawati Yanti
Published: July 2020

This research uses a qualitative approach with a descriptive method, which is the research in question to gather information about the status of existing symptoms, namely the status of a symptom as it is at the time of research. The research aims to determine the right strengths, weaknesses, opportunities, threats and strategies to apply to Lestari Indah. The results of this research show that the strength owned by Lestari Indah yarn Batik is always maintain quality products and high quality but with an affordable price, Batik motifs and colors are varied and with a sprightly understand the wishes of consumers to the product. The strategic location also becomes the strength of Lestari Indah. The weakness in sustainable freckle yarn Batik is the limited number of employees, the risk of decreasing revenue and high distribution cost rates. Batik Freckles Lestari Indah has the opportunity of increasing community income, the ability to capture market share, the presence of corporate cooperation with consumers, positive response of consumers to the existence of the company. The threat to the beautiful sustainable yarn spots Batik is the large number of competitors and high risk of business. A precise strategy that can be used Lestari Indah is an aggressive growth strategy with market penetration.
PENGARUH MODEL PEMBELAJARAN TALKING STICK BERBANTUAN LAGU DAERAH TERHADAP HASIL BELAJAR IPS
Authors: Trianti Lestari Ni Ketut , Kristiantari Mg. Rini , Ganing Ni Nyoman
Published: July 2020

Penelitian ini bertujuan untuk mengetahui perbedaan hasil belajar IPS kelompok siswa yang dibelajarkan dengan model pembelajaran Talking Stick berbantuan lagu daerah  dan kelompok siswa yang dibelajarkan dengan pembelajaran konvensional pada siswa kelas V SD Gugus Lodtunduh Kecamatan Ubud Tahun Ajaran 2016/2017. Sampel penelitian diperoleh Kelas V SD Negeri 3 Lodtunduh sebagai kelompok eksperimen dan Kelas V SD Negeri 4 Lodtunduh sebagai kelompok kontrol. Data yang dikumpulkan menggunakan tes dan dianalisis menggunakan uji-t. Hasil Penelitian menggunakan uji hipotesis diperoleh thitung = 5,057, sedangkan ttabel = 2,00. Sehingga dapat dikatakan bahwa thitung = 5,057 > ttabel= 2,00, maka H0 ditolak dan Ha diterima. Nilai rata-rata hasil belajar IPS siswa pada kelas eksperimen yaitu  = 77,08 dan pada kelas kontrol yaitu  = 67,71. Dengan demikian, dapat disimpulkan bahwa model pembelajaran Talking Stick berbantuan lagu daerah berpengaruh terhadap hasil belajar IPS siswa kelas V SD Gugus Lodtunduh Kecamatan Ubud Tahun Ajaran 2016/2017.
PENGARUH MODEL PEMBELAJARAN ROLE PLAYING BERBASIS TAT TWAM ASI TERHADAP PENGUASAAN KOMPETENSI PENGETAHUAN IPS
Authors: Adnyana I Made Wira , Putra I Ketut Adnyana , Suadnyana I Nengah
Published: July 2020

Penelitian ini bertujuan untuk mengetahui perbedaan yang signifikan penguasaan kompetensi pengetahuan IPS antara kelompok siswa yang dibelajarkan dengan model pembelajaran role playing berbasis tat twam asi  dan kelompok siswa yang dibelajarkan dengan pembelajaran konvensional pada siswa  kelas V SD Negeri Gugus Budi Utomo Tahun Ajaran 2016/2017. Sampel penelitian diperoleh Kelas V SD Negeri 14 Kesiman sebagai kelompok eksperimen dan Kelas V SD Negeri 6 Kesiman sebagai kelompok kontrol. Hasil analisis data diperoleh thitung Sebesar 4,634. Taraf signifikansi 5% dan dk=67 diperoleh batas penolakan hipotesis nol sebesar 2,00. Berarti thitung > ttabel yaitu 4,634 > 2,00, maka Ho ditolak dan Ha diterima. Rata-rata skor penguasaan kompetensi pengetahuan IPS kelompok eksperimen X̅ = 0,60 > X̅ = 0,41 siswa kelompok kontrol. Jadi dapat disimpulkan bahwa terdapat pengaruh model pembelajaran role playing berbasis tat twam asi terhadap kompetensi pengetahuan IPS siswa kelas V SD Negeri Gugus Budi Utomo Tahun Ajaran 2016/2017.
Pengaruh Model Discovery Learning Berbantuan Lingkungan Terhadap Kompetensi Pengetahuan IPA Siswa Kelas V
Authors: Putri Ni M.C.D. , Ardana IK. , Agustika G.N.S.
Published: July 2020

Penelitian ini bertujuan untuk mengetahui pengaruh model discovery learning berbantuan lingkungan terhadap kompetensi pengetahuan IPA siswa kelas V SD Negeri Gugus II Kuta Utara Tahun Ajaran 2017/2018. Penelitian ini merupakan quasi-experiment dengan desain non-equivalen. Populasi pada penelitian ini adalah 10 kelas V dengan jumlah 334 siswa. Sampel penelitian diperoleh dengan teknik simple random sampling, diperoleh kelas V SD No. 3 Tibubeneng sebagai kelompok eksperimen dan kelas VC SD No. 2 Tibubeneng sebagai kelompok kontrol. Metode yang digunakan dalam penelitian ini adalah metode tes dengan tes pilihan ganda biasa. Data yang dikumpulkan adalah data kompetensi pengetahuan IPA dan dianalisis menggunakan uji-t. Analisis yang digunakan dalam menguji hipotesis adalah uji-t, diperoleh t hitung yaitu 3,926. t hitung tersebut dibandingkan dengan t tabel pada taraf signifikansi 5% dan dk = 63 diperoleh t tabel = 1,998. Berdasarkan kriteria pengujian, diperoleh t hitung > t tabel yaitu 3,926 > 1,998, maka Ho ditolak, berarti terdapat perbedaan yang signifikan kompetensi pengetahuan IPA kelompok siswa yang dibelajarkan melalui model discovery learning berbantuan lingkungan dan kelompok siswa yang dibelajarkan melalui pembelajaran konvensional pada kelas V SD Negeri Gugus II Kuta Utara Tahun Ajaran 2017/2018. Dapat dikatakan bahwa terdapat pengaruh yang signifikan model discovery learning berbantuan lingkungan terhadap kompetensi pengetahuan IPA siswa kelas V SD Negeri Gugus II Kuta Utara Tahun Ajaran 2017/2018. Untuk penelitian yang memiliki kesamaan variabel, hasil penelitian ini dapat dipergunakan sebagai kajian penelitian relevan
Pengaruh Model Pembelajaran Think Talk Write (TTW) Terhadap Sikap Ilmiah Dan Hasil Belajar IPA
Authors: Ayu Apriliyani Ni Komang , Dantes Nyoman , Pudjawan Ketut
Published: July 2020

Penelitian ini bertujuan untuk mengetahui perbedaan model pembelajaran Think Talk Write (TTW) terhadap sikap ilmiah dan hasil belajar IPA. Penelitian ini merupakan penelitian quasi experiment dengan desain nonequivalent post-test only control group. Populasi penelitian ini adalah siswa kelas V SD Gugus VI Kecamatan Klungkung Kabupaten Klungkung tahun pelajaran 2017/2018 yang berjumlah 93 siswa. Sampel penelitian berjumlah 42 siswa yang diambil dengan teknik group random sampling. Pengumpulan data sikap ilmiah menggunakan metode non tes dengan instrumen kuesioner, sedangkan hasil belajar IPA menggunakan metode tes dengan instrumen tes pilihan ganda dan pembobotan nilai LKS yang dianalisis dengan statistik deksriptif dan Manova. Hasil penelitian menunjukkan: 1) terdapat perbedaan sikap ilmiah antara siswa yang mengikuti pembelajaran model Think Talk Write (TTW) dengan siswa yang mengikuti pembelajaran konvensional (Fhitung= 26,678 > Ftabel = 4,08); 2) terdapat perbedaan hasil belajar IPA antara siswa yang mengikuti pembelajaran model Think Talk Write (TTW) dengan siswa yang mengikuti pembelajaran konvensional (Fhitung= 33,116 > Ftabel=4,08); dan 3) terdapat perbedaan sikap ilmiah dan hasil belajar IPA antara siswa yang mengikuti pembelajaran model Think Talk Write (TTW) dengan siswa yang mengikuti pembelajaran konvensional (F = 24,285; p
Pengaruh Model Pembelajaran Kooperatif Tipe Team Game Tournament (TGT) Berbantu Media Puzzle Materi Jenis-Jenis Ekosistem Terhadap Prestasi Belajar Siswa Kelas V
Authors: Denpykora Decky , Reffiane Fine , Huda Choirul
Published: July 2020

Penelitian ini bertujuan untuk mengetahui pengaruh penggunaan model pembelajaran kooperatif tipe Team Game Tournament (TGT) berbantu media puzzle materi jenis-jenis ekosistem terhadap prestasi belajar siswa kelas V SDN Trangkil 1 Kabupaten Pati. Jenis penelitian ini adalah penelitian kuantitatif dengan bentuk True Experimental Designs dengan desain Pretest-Posttest Control Group Design. Berdasarkan hasil analisis yang telah dilakukan rata-rata skor pretest pada kelas eksperimen mencapai 62,01 dan kelas kontrol mencapai 56,21 sedangkan rata-rata skor posttest pada kelas eksperimen mencapai 74,82 dan kelas kontrol mencapai 61,65. Nilai ketuntasan klasikal pretest pada kelas eksperimen mencapai 25,93% dan pada kelas kontrol mencapai 19,23% sedangkan pada posttest kelas eksperimen mencapai 81,48% dan pada kelas kontrol mencapai 19,23%. Berdasarkan dari uji t pada kelas eksperimen dan kontrol dengan thitung lebih dari ttabel (3,126>2,009). Disimpulkan bahwa penggunaan model pembelajaran kooperatif tipe Team Game Tournament (TGT) berbantu media puzzle materi jenis-jenis ekosistem berpengaruh terhadap prestasi belajar siswa kelas V SDN Trangkil 1 Kabupaten Pati.
Meningkatkan Kinerja Guru Bahasa Indonesia dalam Melaksanakan Pembelajaran pada Siswa Kelas XI TKRI Semester Satu SMK Negeri 2 Negara Melalui Bimbingan Terjadwal
Authors: Bunga Adam Iskandar
Published: July 2020

Penelitian ini bertujuan untuk meningkatkan kinerja guru mata pelajaran bahasa Indonesia dalam melaksanakan pembelajaran bagi siswa kelas XI TKRI di SMK Negeri 2 Negara. Penelitian ini adalah Penelitian Tindakan Sekolah (PTS) melalui penerapan Bimbingan Terjadwal. Penelitian ini dilakukan dalam beberapa siklus, tiap siklus dalam penelitian meliputi empat langkah yaitu (1) perencanaan (planning), (2) pelaksanaan (acting), (3) observasi (observing), (4) refleksi (reflecting). Data dikumpulkan menggunakan lembar observasi. Setelah data terkumpul dilanjutkan dengan analisis data menggunakan analisis deskriptif. Dari penelitian yang telah dilakukan didapatkan hasil bahwa: pelaksanaan bimbingan terjadwal sangat efektif dilakukan untuk meningkatkan kinerja guru bahasa indonesia dalam melaksanakan pembelajaran pada siswa kelas XI TKRI Semester Satu SMK Negeri 2 Negara Tahun Pelajaran 2018/2019.
Developing Interactive Comics As Learning Media For Civics and Indonesian Language in First Grade
Authors: Herawati Indah Aviolita , Relmasira Stefanus C. , Juneau Janelle L
Published: July 2020

This is a R&D (Research and Development) research with the goal to answer the needs of interactive comics for civics and Indonesian language learning media in 1st-grade of ‘SD Negeri Samirono 01’. Data collection techniques are used observation, experts’ judgment, pre - post tests, and evaluation sheets. Subjects on this research are first grade students at ‘SD Negeri Samirono 01’. This research used ADDIE (Analysis – Design – Develop – Implementation – Evaluation) Devleopment model. The learning media got appropriate category result with percentage 69.23% for media expert judgment and 74.28% for materials experts’ judgment. The learning activity reach into effective, by there is a difference of after using a learning media. The Post-Test average grade is 78.65, which were bigger than Pre-Test average grade is 58.27. The learning media is able to help the students reaching their optimum abilities to understand the learning materials