bluuebunny/crossref_metadata_2025 huggingface dataset:
Impacts of the online gambling prohibition policy: a comparative survey of Brazil versus the European Union
Authors: Catarino João Ricardo , Cordeiro José Duarte , Soares Ricardo de Moraes e
Published: November 2020

Online gambling is a form of gambling. Its direct ban or lack of regulation leads to loss of revenue. These are used to support the social functions of the state. In this research we analyse the estimates about the relevance of online gambling, taking as a reference the European Union where online gambling activity is allowed. These data are compared with estimates for Brazil that does not allow online gambling. Some principles on game regulation are proposed, which can serve the Brazilian case, based on the experience of European and world regulation.
Autonomia pessoal, destino, julgamentos e instituições no Brasil: notas sobre uma pergunta e algumas respostas
Authors: Fachin Luiz Edson
Published: November 2020

Neste artigo, proponho responder se a Constituição brasileira autoriza a desobediência a decisões democráticas por razões de justiça, ainda que isso signifique seguir decisões erradas. Debato, a partir do desenho poético do Brasil que se encontra na obra de Emily Dickinson, controvérsias sobre autoridade pública, legitimidade do poder e participação. A partir do exame dos julgados proferidos pelo Supremo Tribunal Federal, nos últimos cinco anos, defendo que a razão para apoiar a decisão reside, precisamente, em reconhecer que, em boa medida, as instituições contribuíram para o aprimoramento da democracia brasileira.
The COVID-19 pandemic and diabetes mellitus
Authors: Papazafiropoulou Athanasia , Antonopoulos Stavros
Published: November 2020

COVID-19, a disease caused by a novel coronavirus, SARS-CoV-2, has reached the proportion of a pandemic and presents with either mild and moderate symptoms or in severe cases with acute respiratory distress syndrome, multiple organ dysfunction syndrome and even death. Older age, hypertension, cardiovascular disease, diabetes mellitus and obesity significantly increase morbidity and mortality in COVID-19 patients. In the present review we summarize the existing, and daily growing, data on the impact of COVID-19 infection on patients with diabetes, their antidiabetic therapy as well as the extra precautions, apart from good glucose control, they have to take in order not to contract the virus. Social distancing and strict hand hygiene are of great importance in order to help the global goal of eradication of the disease.
Pacing at accelerated heart rate during echocardiography-guided atrioventricular optimisation following cardiac resynchronisation therapy
Authors: Spevack Daniel M. , Chirumamilla Amala , Aronow Wilbert
Published: November 2020

Introduction

Although echo-guided atrioventricular optimisation (AVO) is standardly performed at rest, this approach may not provide optimal AV synchrony during daily activities.

Material and methods

The AVO protocol at one of two hospital campuses had been modified to be performed while pacing at an accelerated heart rate. We tested if this approach would improve the yield from AVO compared to the other campus, where AVO was performed at the intrinsic sinus rate.

Results

Between campuses, no significant differences were seen in demographics, chamber sizes, left ventricular ejection fraction, and diastolic function grade. Those having AVO at C2 were more likely to demonstrate “fusion prone” physiology (36% vs. 9%; p = 0.006) and were more likely to display either “truncation- or fusion-prone” physiology (58% vs. 27%; p = 0.007).

Conclusions

When AVO was performed at an accelerated heart rate, patients with “truncation-prone” or “fusion-prone” physiology were identified more readily.
Outcomes of oesophageal variceal bleeding among patients with atrial fibrillation: a propensity-matched analysis of a nationwide inpatient sample
Authors: Garlapati Pavani , Ur Rahman Ebad , Gayam Vijay , Ditah Chobufo Muchi , Fatima Farah , M. Khan Arfaat , Suliman Mohamed , A. Thompson Ellen , El-Hamdani Mehiar , Aronow Wilbert
Published: November 2020

Introduction

We aimed to determine the influence of atrial fibrillation (AF) on mortality, morbidity, length of hospital stay, and resource utilisation in patients with oesophageal variceal bleeding (OVB).

Material and methods

The National Inpatient Sample database (2016 and 2017) was used for data analysis using the International Classification of Diseases, Tenth Revision codes to identify patients with the principal diagnosis of OVB and AF. We assessed the all-cause in-hospital mortality, morbidity, predictors of mortality, length of hospital stay (LOS), and total costs between propensity-matched groups of OVB with AF vs. OVB alone.

Results

We identified 80,325 patients with OVB, of whom 4285 had OVB with AF, and 76,040 had OVB only. The in-hospital mortality was higher in OVB with AF (OR = 1.4, 95% CI: 1.09–1.83; p < 0.001). OVB with AF had higher odds of sepsis (OR = 1.4, 95% CI: 1.1–1.8; p = 0.007), acute kidney injury (OR = 1.2, 95% CI: 1.12–1.32; p < 0.001), and mechanical ventilation (OR = 1.2, 95% CI: 1.12–1.32; p < 0.001). Advanced age (OR = 1.06, 95% CI: 1.05–1.07; p < 0.001), congestive heart failure (OR = 1.7, 95% CI: 1.3–2.3; p < 0.001), coronary artery disease (OR = 1.4, 95% CI: 1.03–1.92; p = 0.02), and sepsis (OR = 1.3, 95% CI: 1.06–1.70; p = 0.01) were identified as predictors of mortality in OVB with AF. Mean LOS (7.5 ±7.4 vs. 6.0 ±7.2, p < 0.001) and mean total costs ($25,452 vs. $21,109, p < 0.001) were also higher.

Conclusions

In this propensity-matched analysis, OVB with AF was associated with higher odds of in-hospital mortality, sepsis, acute kidney injury, and mechanical ventilation.
Feeding difficulties: etiology and growth parameters
Authors: Bąbik Katarzyna M. , Horvath Andrea , Dziechciarz Piotr , Ostaszewski Paweł
Published: November 2020

Introduction

In the first year of life it is crucial to maintain a well-balanced diet. It ensures optimal growth and development of the child. Feeding difficulties experienced by a child might lead to impairment of the nutritional status. Despite the importance of the subject, we did not find much recent published information. The aim of the study was to assess the etiology and growth parameters in children with feeding difficulties.

Material and methods

Children with feeding difficulties admitted to the Department of Pediatrics (September 2013 – April 2019) were recruited. Feeding difficulties were diagnosed by a minimum of two specialists. Based on medical records and clinical evaluation they were categorized as: organic, nonorganic or mixed (both medical and behavioral). To assess nutritional status weight, length/height, and body mass index (BMI) were obtained and compared with WHO reference standards.

Results

Four hundred twenty-two children with mean age of 35 months (range: 3 to 156 months) were recruited. Fifty-three percent of feeding difficulties were nonorganic (behavioral), whereas the remaining 47% were caused by mixed factors. Organic factors were mostly related to gastroenterological disorders, food allergy or coexistence of more than one medical problem. Underweight (weight < –2 z-score) was observed in 18% of patients, stunted growth (length/height < –2 z-score) in 11%, wasting (BMI < –2 z-score) in 15%, and overweight (BMI > + 2 z-score) in 1%.

Conclusions

Our study showed that organic feeding difficulties coexisted with a behavioral component. The observed nutritional impairments in children with feeding difficulties indicate that there is a need for quick detection of these difficulties in order to provide appropriate support and help as soon as possible.
Kawasaki disease in Latvia 2012–2019: epidemiology and rate of resistance to initial treatment
Authors: Vasiļevska Lauma , Dāvidsone Zane , Ligere Elīna , Šantere Ruta , Staņēviča Valda
Published: November 2020

Introduction

Kawasaki disease (KD) is an acute febrile illness of early childhood, characterised by vasculitis of the coronary and medium-sized arteries. The incidence of the disease differs worldwide, but the incidence of KD has not been established in Latvia. The aim of the study was to describe the epidemiological characteristics and estimate the incidence rate and resistance to initial treatment of KD among hospitalised children in Latvia.

Material and methods

The study was a descriptive, population-based study, which used hospital discharge records of patients < 18 years old diagnosed with KD in the years 2012–2019. Incidence rate was calculated using the number of KD patients and corresponding national census data.

Results

here were 36 KD patients in Latvia. The median age at admission was 2.8 years, with 67% of cases under 5 years of age, and the male/female ratio was 1.3 : 1. The mean annual incidence rate was 1.3 per 100,000 children 0–18 years old, and 2.9 per 100,000 for children < 5 years old. The mean length of hospital stay was 14 days. Coronary artery dilatation was recorded in 8% of the patients (all of whom were male). Every patient received intravenous immunoglobulin (IVIG), with a median of 7 days from fever onset to IVIG administration. Refractory treatment was reported in 25% of cases.

Conclusions

This is the first epidemiological study of KD in Latvia. The incidence rates are lower than those reported for other European countries. The percentage of refractory treatment was higher than in other studies.
Periodization of volleyball training: characterization of training loads distribution in different macrocycles of Brazilian national u-19 male players
Authors: Lopes Juliana Astolpho , da Silva Karina Alves , Reeberg Stanganelli Luiz Cláudio
Published: November 2020

Purpose

The objective was to characterize training loads distribution among Brazilian national U-19 male volleyball
players.

Methods

Documentary research was performed to analyse 8 training diaries. The contents were tabulated in a spreadsheet
and classified into variables and subvariables. Data for each macrocycle were classified depending on the time spent on each
variable and the percentage of time on each of them. To identify differences in time of each year for each training attribute,
a model was executed in minutes and another based on the percentage of time spent on each variable (technical-tactical training,
physical conditioning, physical tests, friendly games, recreational activities, official games) and subvariable (weight training,
anaerobic power, aerobic power, jumping power, flexibility, postural work, recovery activities, proprioception, coordination).
The results were stratified by tertiles. The Levene’s test verified the homogeneity assumption. Comparisons involved analysis
of variance test followed by the Bonferroni post-hoc, with a significance of p < 0.05. The data are presented as descriptive
statistics.

Results

The longest macrocycle lasted 29 weeks and the shortest 12 weeks. The largest distribution was for technical-tactical
training (ca. 49.2%) followed by physical conditioning (ca. 27.5%). No significant differences were found between the variables
during the analysed period. However, weight training became the main method of physical conditioning over the years; this
variable improved as the training loads adjusted to the real game demands.

Conclusions

The observed periodization corroborates the training methodology indicated by literature.
Injuries in high school level rugby union: how do coaches manage injuries?
Authors: Pote Lee , Robinson Bradley , Christie Candice
Published: November 2020

Purpose

The purpose of the investigation was to determine the injuries and injury prevention strategies in high school
rugby union players, as reported by the coaches.

Methods

A cross-sectional, descriptive study was conducted where participants (from fee-paying and no-fee-paying schools)
were required to complete an electronically based questionnaire focusing specifically on injuries and injury prevention
strategies in male high school level rugby players.

Results

The results indicated that the most common injured position was the back row, while 60% of all injuries were to
the shoulder region. Furthermore, while the majority (75%) of coaches did record injury statistics, only a limited number
implemented injury prevention strategies (mainly from fee-paying schools). The most common injury prevention tool reported was ‘strengthening target areas’

Conclusions

It was concluded that all schools should monitor injuries and implement some form of strength and conditioning program to reduce the risk of player injury. Furthermore, it was noted that for this to occur, the education of the
coach as well as the player was highly important.
Influence of fitness techniques integration on the development of physical qualities and morpho-functional state of adult females
Authors: Mozolev Oleksandr , Bloshchynskyi Ihor , Prontenko Kostiantyn , Zdanevych Larysa , Kruty Kateryna , Popovych Oksana , Pisotska Leonida
Published: November 2020

Purpose

The article focuses on the influence of recreational fitness exercises on the level of adult females’ physical qualities
and morpho-functional state development.

Methods

Overall, 32 women aged 30–45 years took part in the research, based on the authors’ program combining various
types of fitness exercise. One-hour workouts were conducted 2 times per week at Khmelnytskyi Humanitarian-Pedagogical
Academy for 9 months. The morpho-functional state of the participants was determined by measuring their height, weight, lung
capacity, heart rate, arterial blood pressure, body parts circumferences, and skin folds. The level of physical qualities development
was assessed with the following tests: sitting forward bend, running in place for 10 seconds, rope skipping for 30 seconds,
bench push-ups for 30 seconds, sit-ups for 30 seconds, plank exercise, maintaining balance while standing on one leg

Results

A confirmed improvement of the morpho-functional state indicators and physical qualities development of the participants
of the pedagogical experiment (p < 0.05) was established. The most significant effect referred to body mass decrease,
enhancement of cardiorespiratory system functional capabilities, as well as improvement of power and coordination abilities

Conclusions

. The implemented authors’ program, combining different types of fitness exercise, made the workouts flexible
and varied, allowed to find an individual approach to each woman, and thus contributed to an increase of their physical
condition by improving the morpho-functional state of the body and the level of physical health.
Effects of foam rolling on blood lactate concentration in elite futsal players
Authors: Pelana Ramdan , Apriantono Tommy , Bagus Bagus Winata , Juniarsyah Agung Dwi , Indah Ihsani Sri
Published: November 2020

Purpose

Foam rolling (FR) is a known recovery method based on self-myofascial release. Detailed data on FR to reduce
muscle fatigue and enhance performance in futsal athletes are still limited. The study aimed to assess whether FR was
a suitable recovery method for futsal athletes to enhance performance and reduce their lactic acid concentration

Methods

A total of 30 male futsal athletes participated in this study. They were randomly divided into 2 groups: 15 subjects
assigned to the experimental (FR) group practised foam roller exercises, while 15 individuals assigned to the control group
were given slow jogging recovery. Both groups completed pre- and post-recovery tests for anaerobic capacity and agility.
Blood lactate was measured before the experiment, immediately after the tests, and immediately after recovery. A 2 × 2 repeated measures analysis of variance (ANOVA) was used to calculate each parameter results.

Results

In the post-recovery lactate concentration, the independent t-test revealed a significant decrease between pre- and
post-test values in the FR group (p = 0.033). Conversely, an increase in lactate between pre- and post-test measurements
occurred in the control group (p = 0.058). Furthermore, ANOVA revealed significant time × group interactions (p = 0.002) and
a significant main effect for group (p = 0.001).

Conclusions

FR after exercise-induced muscle fatigue had an effect on the recovery of elite futsal players by increasing
the rate of blood lactate clearance. There was no increase in performance in 20-m sprint or agility (t-test).
Working conditions and their impact on work satisfaction in migrating and non migrating workers. Factor structure of the Polish version of the Working Conditions Questionnaire
Authors: Walczak Radosław , Vallejo-Martín Macarena
Published: November 2020

Background

The study compares the impact of working conditions and wages as predictors of work satisfaction of Poles, working in Poland and abroad. Although the work environment plays a crucial role in determining the work sat-isfaction of migrants, most mention higher income abroad as the main migration motive. The increased in-come may not boost the work satisfaction however, because during migration the wage reference point chang-es. Based on those observations, it was assumed that working conditions will have a greater impact on mi-grants’ work satisfaction than nominal earnings. Additionally, migrants, while having higher nominal wages, should subjectively judge them as lower.

Participants and procedure

Two samples – 351 subjects working in Poland, and 158 working in the UK and Germany – were analyzed. Everyone filled in an online survey including questions about their work environment and income, the Polish versions of the Working Conditions Questionnaire and the Work Satisfaction Scale. The results of the structural analyses (EFA and CFA) and between-sample measurement invariance of the Working Conditions Question-naire were obtained. Migrants and stayers were compared using a Kruskal-Wallis ANOVA. The impact of work-ing conditions and wages on work satisfaction was analyzed with multiple linear regression.

Results

The factorial structure of the Working Conditions Questionnaire in the Polish version is comparable to the Span-ish original. Additionally, the nominal wages were perceived as higher for migrants than stayers. The reverse was true for subjective wage evaluations. Some working conditions were shown to have a significant impact on work satisfaction.

Conclusions

The Polish version of the Working Conditions Questionnaire is an internally consistent and reliable tool for measuring work properties. Higher nominal wages of migrants do not lead to their higher work satisfaction. Working conditions are a better predictor of work satisfaction than wages for all analyzed groups.
MULTITEMPORAL SPECTRAL ANALYSIS FOR ALGAE DETECTION IN AN EUTROPHIC LAKE USING SENTINEL 2 IMAGES
Authors: German A. , Ferral A. , Scavuzzo C. M. , Shimoni M.
Published: November 2020

Abstract. Eutrophication is characterized by excessive plant and algal growth due to the increased of organic matter, carbon dioxide and nutrients in water body. Although eutrophication naturally occurs over centuries as lakes age, human activities have accelerated it processes and caused dramatic changes to the aquatic ecosystems including elevated algae blooms and risk for hypoxia as well as degradation in the quality of drinking water and fisheries. Monitoring eutrophic processes is therefore highly important to human health and to the aquatic environment. However, the spatial and seasonal distribution of the phenomena and its dynamic are difficult to be resolved using conventional methods as water sampling or sparse acquisition of remote sensing data. This research work proposes a methodology that takes advantage of the high temporal resolution of Sentinel-2 (S2) for monitoring eutrophic reservoir. Specifically, it uses large temporal series of S2 images and advanced temporal unmixing model to estimate the abundance of [Chl-a] and algae species in San Roque reservoir, Argentina, in the period August 2016 to August 2019. The spatial patterns and the temporal tendencies of these aquatic indicators, that have a direct link to Eutrophication, were analysed and evaluated using in situ data in order to assess their contribution to the local water management.
CERRADO KNOWLEDGE PLATFORM: A SOCIAL AND ENVIRONMENTAL MANAGEMENT TOOL TO CONSERVE BRAZILIAN SAVANNAS
Authors: Ferreira M. E. , Silva E. B. , Malaquias F. S. S. , Teixeira L. M. S. , Pascoal L. M. , Santos N. B. , Oliveira T. F.
Published: November 2020

Abstract. In the last decade, the access to geographic information through Web platforms has grown substantially in Brazil, and is now a strategic condition for the social and environmental governance of large biomes such as Cerrado (savanna) and Amazonia. This paper aims to present the first version of the Cerrado Knowledge Platform, designed within the scope of the Critical Ecosystem Partnership Fund (CEPF) for the Brazilian savanna. The Platform aims to provide geospatial and census data, organize and systematize the accumulated knowledge about the Cerrado, and also highlight the actions of researches and social networks in this region. It was developed based on three components: (1) protocols and data formats; (2) adaptation of computational tools for social and environmental analysis and monitoring, in order to notify possible threats to the ecosystem (e.g. burning and deforestation); (3) training and maintenance database component. Although still in a beta version, our platform already has some active features, including access to dynamic land use maps, deforestation, and aerial imagery provided by Unmanned Aerial Vehicles (UAVs). With its enhancement and constant data input from partners, we expect the Cerrado Knowledge Platform can better assist the management of land use and land cover of Cerrado, with a perspective of maintaining key areas for biodiversity conservation.
ANALYSIS OF VHR IMAGE CLASSIFICATION BY SINGLE AND ENSEMBLE OF CLASSIFIERS
Authors: Lacerda M. G. , Shiguemori E. H. , Damião A. J. , Anjos C. S. , Habermann M.
Published: November 2020

Abstract. Given the wide variety of image classifiers available nowadays, some questions remain about the accuracy and processing time of Very High Resolution (VHR) images. Another question concerns the use of a Single or Ensemble Classifiers. Of course, the main factor to consider is the quality of the classified image, but computational cost is also important, especially in applications that require real-time processing. Given this scenario, this paper aims to relate the accuracy of seven single classifiers and the ensemble of the same classifiers with the processing time. In this paper the ensemble of classifiers had the best results in terms of accuracy, however, it comes to processing time, the decision tree had the best performance.
SPECTRAL DIFFERENCES OF TREE SPECIES BELONGING TO ATLANTIC FOREST OBTAINED FROM UAV HYPERSPECTRAL IMAGES
Authors: Miyoshi G. T. , Imai N. N. , Tommaselli A. M. G. , Honkavaara E.
Published: November 2020

Abstract. The objective of this study is to evaluate the spectral difference between and within 11 tree species belonging to Brazilian Atlantic Forest located in the countryside of São Paulo State, Brazil. Tree species with different development stages may have different reflectance spectra because of the structural and phenological influence on it. Tree structure can affect the crown spectra due to the differences in geometry of view and density of shadow and sunlight pixels. Additionally, reflectance spectra can be similar between tree species belonging from different species, which affect the classification accuracy of these targets. In this sense, we evaluate the spectral difference between highly diverse Atlantic Forest using two different features extracted from individual tree crowns (ITCs). Mean reflectance spectra and mean normalized reflectance spectra of each ITC were used. They were computed from hyperspectral images acquired with sensor onboard unmanned aerial vehicle. Differences between tree species and within-species were calculated. Wilcoxon-Mann-Whitney test was applied in order to statistically evaluate whether the reflectance spectra were different. Results showed that the normalized values are more propense to increase the classification accuracies than using the mean values since it reduces the variability within-species and present a higher number of different values between-species.
3D RECONSTRUCTION OF CITRUS TREES USING AN OMNIDIRECTIONAL OPTICAL SYSTEM
Authors: Castanheiro L. F. , Tommaselli A. M. G. , Campos M. B. , Berveglieri A. , Santos G.
Published: November 2020

Abstract. This paper presents a feasibility study on the use of omnidirectional systems for 3D modelling of agricultural crops, aiming a systematic monitoring. Omnidirectional systems with multiple sensors have been widely used in close-range photogrammetry (CRP), which can be a good alternative to provide data for digital agriculture management. The GoPro Fusion dual-camera is the omnidirectional system used in this work. This system is composed of two cameras with fisheye lenses that cover more than 180° each one in back-to-back position. System calibration, camera orientation and 3D reconstruction of an agricultural cultivated area were performed in Agisoft Metashape software. A 360° calibration field based on coded targets (CTs) from Agisoft Metashape software was used to calibrate the omnidirectional system. The 3D reconstruction of an orange orchard was performed using fisheye images taken with GoPro Fusion. The results show the potential of using an omnidirectional system for 3D modelling in agricultural crops, in particular citrus trees. Interior orientation parameters (IOPs) was estimated using Agisoft Metashape target/software with a precision of 9 mm. A 3D reconstruction model of the orange orchard area was obtained with an accuracy of 3.8 cm, which can be considered acceptable for agricultural purposes.
DeepBedMap: a deep neural network for resolving the bed topography of Antarctica
Authors: Leong Wei Ji , Horgan Huw Joseph
Published: November 2020

Abstract. To resolve the bed elevation of Antarctica, we present DeepBedMap – a novel machine learning method that can produce Antarctic bed topography with
adequate surface roughness from multiple remote sensing data inputs. The super-resolution deep convolutional neural network model is trained on
scattered regions in Antarctica where high-resolution (250 m) ground-truth bed elevation grids are available. This model is then used to
generate high-resolution bed topography in less surveyed areas. DeepBedMap improves on previous interpolation methods by not restricting itself to a
low-spatial-resolution (1000 m) BEDMAP2 raster image as its prior image. It takes in additional high-spatial-resolution datasets, such as ice
surface elevation, velocity and snow accumulation, to better inform the bed topography even in the absence of ice thickness data from direct
ice-penetrating-radar surveys. The DeepBedMap model is based on an adapted architecture of the Enhanced Super-Resolution Generative Adversarial Network,
chosen to minimize per-pixel elevation errors while producing realistic topography. The final product is a four-times-upsampled (250 m) bed
elevation model of Antarctica that can be used by glaciologists interested in the subglacial terrain and by ice sheet modellers wanting to run
catchment- or continent-scale ice sheet model simulations. We show that DeepBedMap offers a rougher topographic profile compared to the standard
bicubically interpolated BEDMAP2 and BedMachine Antarctica and envision it being used where a high-resolution bed elevation model is required.
Sistemas colaborativos y de cooperación internacional como mecanismos para afrontar la crisis
Authors: Aza Jácome Alfonso , Pinzón Ríos Cindy Paola
Published: November 2020

Este capítulo plantea los sistemas colaborativos y de cooperación internacional como mecanismos clave para afrontar y superar la crisis. Ante la crisis que se deriva de un mal público global (MPG), como la pandemia originada por la covid-19, se hace necesario recurrir a diferentes mecanismos para combatir esos males públicos globales. Para esto, se ilustran los problemas de actuación colectiva y los métodos de provisión de bienes públicos. También, se presentan las soluciones cooperativas, la interdependencia, soberanía y cooperación. Finalmente, se explican las características de los sistemas de colaboración y cooperación, y cómo replicarlas en otros sectores, lo que se ilustra en un caso de cooperación científica para la atención de la covid-19 entre hospitales españoles y colombianos.
Análisis bibliométrico de estudios sobre factores socioeconómicos en estudiantes universitarios
Authors: Palacio Sprockel Lilia Esther , Vargas Babilonia Javier Dionicio , Monroy Toro Stella Lucila
Published: November 2020

El artículo presenta una actualización de las variables socioeconómicas relacionadas con el abandono de los estudios universitarios. Se utilizó la metodología del metaanálisis, a partir de la revisión sistemática de estudios científicos relacionados con el tema. De 143 artículos publicados en el período 2005-2019, se seleccionaron 71 que cumplieron plenamente con los criterios de selección de la muestra: relación directa con la temática del estudio, publicados en revistas en español del área de educación e indexadas en bases de datos especializadas de acceso abierto. El presente estudio corrobora las incidencias de las variables socioeconómicas y sociodemográficas como causales del bajo rendimiento académico y de la consecuente deserción estudiantil; uno de los factores socioeconómicos preponderantes resultó ser la escolaridad del padre o la madre. También muestra que la finalidad de las investigaciones sobre las variables socioeconómicas se orienta principalmente a la formulación de políticas universitarias para disminuir el abandono estudiantil.
Percepción de los docentes sobre sus acciones innovadoras
Authors: Leal-Fonseca Diego Ernesto , Rojas De Francisco Laura Isabel , Ortiz-Pradilla Tatiana , Monroy-Osorio Juan Carlos
Published: November 2020

El estudio presenta una exploración acerca de las percepciones de docentes de instituciones oficiales sobre sus acciones innovadoras, en Bogotá, Colombia. Se utilizaron métodos mixtos, para explorar percepciones sobre la generación y desarrollo de acciones de innovación educativa, identificar los mecanismos utilizados para difundirlas y conocer las problemáticas asociadas al logro de las actividades innovadoras en la educación pública. Los resultados ofrecen las bases para construir estrategias de difusión y reconocimiento de las acciones innovadoras en la práctica docente, y muestran la necesidad de comprender mejor las condiciones, situación, intereses y posibilidades de los docentes de instituciones oficiales.
Perceived Organisational Support and Organisational Commitment among Oil and Gas Offshore Employees in Malaysia
Authors: Mokhtar Ridwan , Azwa Ambad Sylvia Nabila , Syed Annuar Sharifah Nurafizah , Lajuni Nelson
Published: November 2020

With the fast growth of business and rapid changes in the economic landscape, organisational commitment remains an important subject to be discussed in any part of an organisation. Thus, the present study examines the effects of perceived organisational support on organisational commitment among offshore employees in Malaysia. A study was conducted by distributing online questionnaire via Google Forms among offshore employees. A total of 246 completed responses were collected, and data collected were then analysed using PLS-SEM 3.3.2. The outcomes suggest that all dimensions of perceived organisational support have a significant relationship towards organisational commitment among offshore employees in Malaysia, except for supervisor support.
Analysis of Fibrous Compounds Using a Pressurized and Non-pressurized Conditions
Authors: Malaguez Edgard Gonçalves , Rodrigues Andressa Tellechea , Garcez Kelli Flores , Hoch Gabriela Ceratti , Schmidt Ana Paula , Del Pino Francisco Augusto Burkert , Castagnara Deise Dalazen
Published: November 2020

Neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were evaluated in pressurized and unpressurized conditions using samples of roughage and concentrates. In summary, the samples were dried, processed in a knife mill, weighed in nonwoven bags (100g/m²), placed in a container and treated with neutral or acid detergents. Extractions of NDF and ADF content were carried out in a non-pressurized condition at temperature of 100°C for 60min and in pressurized condition using different temperatures of 100 and 110°C for 60min. Results of the different temperatures using the pressurized procedure were compared to those obtained with the pressurized through the linear regression analysis. The method with the temperature 110°C for 60 min had a high level of agreement. Was not observed a bias potential of proportion (P>0.05). There was not a systematic inclination of the methods to overestimate or underestimate errors. This methodology can be carried out with roughage and concentrate feedstuffs simultaneously.
Thornton Wilder: At Home in the Southwest
Authors: Caldwell Ann
Published: November 2020

Thornton Wilder is regarded by most as a New Englander, with a house in Hamden, Connecticut, built with early proceeds from The Bridge of San Luis Rey, and a second home purchased in 1966 in Edgartown on Martha's Vineyard. Throughout his adult life, however, Wilder had a recurring urgency to leave home when he was working on novels or plays. For over a third of his life, he found a temporary refuge in the American Southwest. He established deep friendships there with fellow writers Mabel Dodge Luhan and Witter Bynner and found desert retreats in which to start one novel (The Eighth Day), finish another (Heaven's My Destination), and write most of his play The Merchant of Yonkers. This article theorizes that Wilder, like characters in Heaven's My Destination and Theophilus North, might have been in Wilder biographer Penelope Niven's words, a lifelong traveler “searching for home” (672). For Wilder, the Southwest may have been as close to a creative and spiritual home as any he would ever find.
“That's What It Was To Be Alive”: A Social Gospel Reading of Our Town
Authors: Calloway Jamall A.
Published: November 2020

Our Town resonates with the Social Gospel by beckoning the audience to consider the ethical implications of how we decide to use our ever-dwindling time. This undertheorized resonance with the Social Gospel, although subtle, in turn allows for a counter-reading of Tom F. Driver's theological critique that the play fails to offer constructive thoughts regarding social injustice and the problem of evil. This article illuminates more of Wilder's implicit Social Gospel qualities and outlines through key passages the significance of context for Wilder in time and history.
Examining the impact of emotional and behavioral problems on parenting stress in mothers of children with autism in Mongolia
Authors: Tumurbaatar Bulganzaya , Chuluunbaatar Baigalmaa
Published: November 2020

The present study examined the effects of emotional and behavioral problems on parenting stress among mothers of children with autism in Mongolia. The hypothesis is that if children with autism presented more problems on their emotional and behavioral aspects, the higher parenting stress perceived among the mother of children with autism. The convenience sample of the study was composed of 62 mothers of children with autism spectrum disorder. The present study used the Parenting Stress Index-Short form (PSI/SF) and the Strengths and Difficulties Questionnaire (SDQ), which are translated into Mongolian language by research team. Using the current sample of mothers of children with autism, Cronbach`s alpha coefficients of PSI/SF-M was 0.94 and SDQ-M was 0.62 for our sample. Bivariate correlation between the variables measuring difficulties of child and parenting stress revealed the existence of small to moderate correlations between SDQ subscales and PSI/SF subscales. PSI/SF total score and SDQ total score are correlated significantly at 0.35 (p=0.01). Difficult child subscale is correlated mild to moderate with SDQ total score (0.53), emotional symptoms (0.37), hyperactivity/inattention (0.35) and conduct problem (0.50) in positive way. Strong correlations were found between subscales of PSI/SF (0.67-0.89). The result of multiple regression analysis indicated that in addition with emotional and behavioral problems of children, income sufficiency of household and social support variables is significantly associated with parenting stress of mothers.
NEUROANATOMÍA DEL SAURÓPODO TITANOSAURIO NARAMBUENATITAN PALOMOI DEL CRETÁCICO SUPERIOR DE PATAGONIA, ARGENTINA.
Authors: Paulina-Carabajal Ariana , Filippi Leonardo , Knoll Fabien
Published: November 2020

this taxon has uncertain phylogenetic relationships within the clade. An X-ray Computed Tomography (CT) scan of the holotypebraincase allowed the first reconstruction of the brain and inner ear of this taxon, making it possible to compare the neuroanatomy with thatof closely related forms. Except for the slightly sigmodal shape of the endocast in lateral view—considered a basal condition—, the brainshows derived titanosaurian traits such as a poorly developed dorsal expansion and a single exit for Cranial Nerve (CN) XII. In contrast, the innerear exhibits slender and long semicircular canals (the anterior semicircular canal is distinctly longer than the posterior semicircular canal), whichis a character present in more basal representatives of the group, such as Sarmientosaurus. We consider, however, the morphology of theinner ear as an unreliable indicator of phylogenetic position. Furthermore, there is a remarkable similarity between the morphology of theendocast of Narambuenatitanand the possible saltasaurid from (FAM 03.064), from the Upper Cretaceous of Fox-Amphoux-Métisson, France,suggesting saltasaurine affinities for the Argentinean taxon.
Ensino e Educação Especial: análise bibliométrica e metassíntese qualitativa da produção científica indexada na base Web of Science
Authors: Pereira Mônica Luciana Da Silva , Barbosa Mayara Lustosa de Oliveira
Published: November 2020

Estudos sobre Educação Especial e Inclusiva avançaram ao longo das últimas décadas. Porém, no ensino, nem sempre ocorre uma aplicação imediata e eficaz dos achados científicos. Dessa forma, é de extrema importância que haja uma sistematização das publicações, de modo a facilitar a divulgação e incentivar suas aplicações. O objetivo deste estudo foi realizar uma análise bibliométrica da produção científica na área de ensino na Educação Especial e Inclusiva, pela base de dados Web of Science de 1947 a 2020. Os dados levantados foram: número de publicações, autores e periódicos mais proeminentes, países que mais publicaram e principais agências financiadoras. Além disso, por meio da metassíntese, foram analisados artigos relacionados às categorias pesquisa educacional e educação especial. Como resultados, foi possível identificar 10.138 artigos em 1.752 fontes ao longo dos quase 73 anos, sendo a taxa de crescimento anual de 6,3%. A revista com maior número de publicações no período foi a Exceptional Children, a agência que mais financiou pesquisas foi o Departamento de Saúde dos Estados Unidos - Serviços Humanos. Os países que mais publicaram foram Estados Unidos, seguido pelo Brasil, e o autor com maior número de produções foi Antonis Katsiyannis. Com relação à metassíntese, foram identificados 27 artigos, cujo foco estava no uso de práticas baseadas em evidências. Os resultados encontrados podem ter implicações no sentido de guiar Docentes que atuam com alunos com NEE, pós-graduandos que tenham interesse em especializar-se e Pesquisadores que atuam com a temática e querem estabelecer redes de colaborações mais proeminentes.
The functions of the preamble of the constitution and the characteristics of the preamble of the Constitution of the Republic of Serbia
Authors: Simović Darko
Published: November 2020

Contrary to the normative part of the constitution whose basic function is of legal character, the preamble of the constitution is characterized primarily by sociological functions. There are many of them, however they are intertwined, hence one sociological function, as a rule is tied to the majority of other sociological functions. However, it is possible for certain functions of the preamble to be in collision. Based on a comparative analysis of modern constitutions we can discuss the following sociological functions of the preamble of the constitution: symbolic, legitimacy, integrative, ideological, educational and programmatic. Aside from sociological functions, the preamble can also have, although more rarely, a legal function. With respect to the preamble of the Constitution of the Republic of Serbia, its content is directed at establishing the territorial identity of the country. In that sense, it can be concluded that the symbolic function of the preamble of the Constitution is more dominant. Although in its content it does not offer anything new in relation to the normative part of the constitution, it announces in a celebratory tone, that Kosovo and Metohija are an integral part of the Republic of Serbia.
Eliciting Critical Thinking through Purposeful Questioning
Authors: Rhodes Sam
Published: November 2020

Teachers can use the SCAMPER framework to help students understand and appreciate rich mathematical connections in topics such as functions. The framework facilitates critical and creative thinking by allowing students to explore concepts through open mathematics.
Improving Written Mathematical Arguments
Authors: Pallanck Jennifer L. , Castro Gabriel O. , Colonnese, Madelyn W. , Casa Tutita M.
Published: November 2020

Two teachers have students imitate verbal discussions to compose and revise their writing.
Supporting LGBTQ+ Students in K–12 Mathematics
Authors: Waid Brandie E.
Published: November 2020

Strategies range from engaging in self-education to creating inclusive classroom spaces and adopting inclusive curriculum and pedagogy.
Exploring Playground Access with Mathematics
Authors: Ward Jennifer
Published: November 2020

Four-year-old children used mathematics to examine the location of and access to public playgrounds in their community. They collected and recorded data, using the information to advocate for a social justice issue.
The Math Pact: A Commitment to Instructional Coherence
Authors: Karp Karen S. , Bush, Sarah B. , Dougherty Barbara J.
Published: November 2020

Ear to the Ground features voices from various corners of the mathematics education world.
Reasoning and Sense Making in High School Mathematics with Two Ways
Authors: Megan Che S. , Utley, Juliana , Reeder Stacy
Published: November 2020

This article illustrates ways to extend Two Ways into high school mathematics content and advantages of doing so.
Fundamental principles, key enabling technologies, and research progress of atom chips
Authors: Li Mo , Chen Fei-Liang , Luo Xiao-Jia , Yang Li-Jun , Zhang Jian ,   School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China,   Institute of Electronic Engineering, China Academy of Engineering Physics, Mianyang 621999, China
Published: November 2020

The laser cooling, trapping and manipulating of neutral atoms has become a valuable tool for scientists, providing innovative ways to probe the nature of reality and giving rise to transformative devices in the fields of precise measurement and quantum information processing. Unlike traditional complex and bulky atomic experimental facilities, atom chips, through the design, fabrication of surface-patterned microstructures, and the integration of devices on the substrates, can precisely control the magnetic, electric or optical fields on a micro-nano scale with low power consumption. It can realize strong trapping as well as coherent atomic manipulation. Since atom chip was first proposed twenty years ago, it has built a robust quantum platform for miniaturizing and integrating quantum optics and atomic physics tools on a chip. In this paper, first, we briefly review the development history of atom chips, then introduce the basic knowledge of micro potential traps and micro guides based on on-chip current-carrying wires. Afterwards, the key technologies about the chip material, design, fabrication, characterization and integration of atom chips are discussed in detail. We not only focus on the currently most active and successful areas - current carrying wires, but also look at more visionary approaches such as to the manipulation of atoms with real nano structures, say, carbon nano tubes. The design and fabrication principles of ideal atom chips are discussed as well. In the forth part, the worldwide plans and research projects involving with atom chip technologies are summarized, showing that many countries see this as an important foundational technology. Following that, the major developments in the application fields including atom clocks, atom interferometer gyroscope, cold atom gravimeter, etc are described. Finally, the challenges faced by atom chips towards practical application are pointed out and the prospects for their subsequent development are depicted.
Electronic structure of graphene nanoribbons under external electric field by density functional tight binding
Authors: Cui Yang , Li Jing , Zhang Lin ,   Key Laboratory for Anisotropy and Texture of Materials, Northeastern University, Shenyang 110819, China,   The State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China,   School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China
Published: November 2020

 In recent years, the rapid development of electronic information technology has brought tremendous convenience to people’s lives, and the devices used have become increasingly miniaturized. However, due to the constraints of the process and the material itself, as the size of the devices made of silicon materials is further reduced, obvious short channel effects and dielectric tunneling effects will appear, which will affect the normal operations of these devices. In order to overcome this development bottleneck, it is urgent to find new materials for the devices that can replace silicon. Carbon has the same outer valence electron structure as silicon. Since 2004, Geim [Novoselov K S, Geim A K, Morozov S V, et al. 2005 Nature 438 197] prepared two-dimensional graphene with a honeycomb-like planar structure formed by sp2 hybridization, graphene has received extensive attention from researchers and industrial circles for its excellent electronic and mechanical properties. However, graphene is not a true semiconductor, and it has no band gap in its natural state. The energy gap can be opened by preparing graphene nanoribbons. On this basis, the electronic structure of the nanoribbons can be further controlled by using an external electric field to destroy the symmetric structure of the nanoribbons.

In this paper, the tight-binding method based on density functional theory is used to calculate and study the influence of external transverse electric field on the electronic structure and electron population of un-hydrogenated/hydrogenated armchair graphene nanoribbons. The calculation results show that whether there is hydrogen on the edge of the graphene nanoribbons or not, the energy gap changed at the Г point shows a three-group periodic oscillation decreasing law, and as N increases, the energy gap will disappear. Under the external electric field, the band structure and the density of states of the nanoribbons will change greatly. For un-hydrogenated nanoribbons with semiconducting properties, as the intensity of the external electric field increases, a semiconductor-metal transition occurs. At the same time, the electric field will also have a significant influence on the energy level distribution, resulting in significant changes in the peak height and peak position of the density of states. The external electric field causes the electron population distribution on the atoms in the nanoribbons to break its symmetry. The greater the electric field strength, the more obvious the population asymmetry is. The edge hydrogenation passivation can significantly change the population distribution of atoms in nanoribbons.