bluuebunny/crossref_metadata_2025 huggingface dataset:
Definition of selection criterion using correlation and path coefficient analysis in rice (Oryza sativa L.) genotypes
Authors: Saleh Maysoun M. , Salem Khaled F. M. , Elabd Abdelmoaty B.
Published: August 2020

Background and objective

Investigation on genetic variability and correlation study between yield and its components of genotypes on rice may increase the opportunity to exploit its potential which will help meet the demand of high grain yield and nutrition supply. The current study aimed to determine correlation and path coefficients between twenty-two Egyptian and exotic rice genotypes to establish selection criteria which might help to develop genotypes for high yielding.

Materials and methods

Twenty-two Egyptian and exotic rice genotypes were evaluated through seven agronomic traits. Agronomic data were collected during the two successive rice growing seasons, 2017 and 2018. The matrix of phenotypic correlations was estimated and analyzed into direct and indirect effects through path coefficient analysis.

Results

Results showed that grain yield per plant had a high positive and significant correlation (p ≤ 0.01) with panicle number per plant, full grain number per panicle, and 1000 grain weight, 0.791**, 0.670**, and0.766**, respectively. As expected, there was a negative correlation (p ≤ 0.05) between days to heading and panicle number per plant (r = – 0.496*) and with1000 grain weight (r = – 0.433*). Path coefficient analysis showed that despite high positive and significant correlation (p ≤ 0.01) between grain yield per plant and many variables, a small number of these correlations was verified to have a relationship of cause and effect. Variables with positive and significant correlation and with a high direct effect on grain yield per plant were 1000 grain weight (0.5107 direct effects) followed by panicle number per plant (0.4003), and full grain number per panicle (0.3028).

Conclusion

The three traits (1000 grain weight, panicle number per plant, and full grain number per panicle) are the most important variables for use in grain yield per plant assessment programs as selection indices because they have positive and significant correlations and direct and/or indirect effect on the correlation value of the increased rice grain yield production. Hence, for increasing grain yield, the direct selection of genotypes based on positively correlated traits will be more fruitful while planning any rice breeding program to achieve higher grain yield in rice.
The influence of suture materials on the biomechanical behavior of suture-meniscal specimens: a comparative study in a porcine model
Authors: Matthews John Reza , Wang Jiefei , Zhao Jiwei , Kluczynski Melissa A. , Bisson Leslie J.
Published: August 2020

Background

Repair of a meniscal tear is indicated in certain conditions. Despite extensive research on the biomechanics of various repair methods, there has been minimal investigation of whether the suture material influences the meniscal-suture construct. The purpose of this study was to compare the biomechanical properties of nine different suture materials under cyclic and load-to-failure conditions.

Methods

Ninety porcine menisci were randomly allocated to simple suture placement using either Ultrabraid®, Ultratape®, Magnum Wire®, TigerWire®, TigerTape®, LabralTape®, Orthocord®, 0 FiberWire®, or 2-0 FiberWire®. Each suture-meniscus specimen underwent cyclic loading followed by load-to-failure testing. Elongation, maximum load to failure, stiffness, and mode of failure were recorded and compared between each suture type using non-parametric testing. Mean ± standard deviation was reported and the statistical significance was p < 0.05.

Results

Elongation during cyclic loading was lowest with 2-0 FiberWire (0.95 ± 0.17 mm); this value was statistically significantly different than the results for all other sutures except 0 FiberWire® (1.09 ± 0.17 mm, p = 0.79), TigerWire® (1.09 ± 0.29 mm, p = 0.85), TigerTape® (1.39 ± 0.29 mm, p = 0.08), and LabralTape® (1.20 ± 0.33 mm, p = 0.41). The highest elongation was seen with Ultrabraid® (1.91 ± 0.34 mm); this value was statistically significantly greater than the results for all other suture materials except Orthocord® (1.59 mm ± 0.31 mm, p = 0.46) and Magnum Wire® (1.43 ± 0.25 mm, p = 0.14). Load to failure was highest for TigerTape® (287.43 ± 41.15 N), and this result was statistically significantly different than the results for all other sutures except LabralTape® (271.34 ± 48.48 N, p = 0.99) and TigerWire® (251.03 ± 25.8 N, p = 0.51). Stiffness was highest for LabralTape® (195.77 ± 49.06 N/mm), and this result was statistically significantly different than the results for all other sutures except TigerWire® (186.49 ± 19.83 N/mm, p = 0.45) and TigerTape® (173.35 ± 15.60 N/mm, p = 0.19). The majority of sutures failed by pullout (n = 46, 51%) or tearing (n = 40, 45%).

Conclusion

Suture design and material affect the biomechanical behavior of porcine meniscal-suture specimens. LabralTape®, TigerWire®, and TigerTape® demonstrated better overall combinations of low elongation, high maximum load to failure, and high stiffness.
MR defecography in ano-rectal dysfunction: a clinical-radiological correlation study
Authors: Saraya Samira , Awad Ahmed , EL Bakry Rehab El
Published: August 2020

Background

The aim of this work is to assess the diagnostic accuracy of MR defecography in ano-rectal dysfunction [ARD] for proper treatment planning.

Results

MR defecography was done to 30 patients with ARD for detection of its functional and structural causes. Increased perineal descent was detected in 70% of cases, rectocele in 46.7%, rectal intussusception in 40%, cystocele in 26.7%, uterine prolapse in 27.7%, enterocele in 13.3%, and paradoxical puborectalis contraction in 30%.

Conclusion

MR defecography is an essential diagnostic tool for optimum management of ano-rectal dysfunction patients.
Impact of narcissistic personality disorder on cognitive organizational cynicism with mediating role of psychological capital in selected hospitals of Punjab Pakistan
Authors: Sabir Irfan , Hussain Shahbaz , Majid Muhammad Bilal , Rehman Asad-ur , Sarwar Arslan , Nawaz Farooq
Published: August 2020

Purpose

The purpose of this research work was to analyze the narcissism personality disorder in nurses and their impact on cognitive organizational cynicism with mediating role of psychological capital.

Design/methodology/approach

In the current study, constructs developed from existing theories, generate hypotheses, adopt strategies for data collection and perform test to prove the proposed hypothesis. The nursing carder is the unit of analysis in this research study. Descriptive statistics, correction, and mediation analysis through Baron and Kenny’s were performed for analysis.

Findings

This research concludes narcissism personality disorder has significant positive association with cognitive organizational cynicism. The role of psychological capital is mediating to minimize the negative employee’s behavior toward their bosses and organization.

Practical implications

In the light of findings, the current research work has implications at individual and organization levels. This research work will become as foundation stone to formulate strategies to overcome the organization cynicism in nursing profession. Furthermore, the organization formulates selection process more affective to find those candidates having narcissism disorder.

Originality/value

The current research work is designated first study to evaluate the relationship between narcissistic personality disorder and cognitive organization cynicism with mediating role of psychological capital in Pakistan.
Psychological distress and sleep problems when people are under interpersonal isolation during an epidemic: A nationwide multicenter cross-sectional study
Authors: Wang Shu , Zhang Yuan , Ding Wei , Meng Yao , Hu Huiting , Liu Zhenhua , Zeng Xianwei , Wang Minzhong
Published: August 2020

Background.

During the outbreak of coronavirus disease 2019 (COVID-19), people are under the dual pressure of interpersonal isolation and concerns about infection. An evaluation of people’s psychological status and risk factors is needed to conduct target interventions.

Methods.

This was a nationwide, multicenter, cross-sectional study using quota and snowball sampling methods during the COVID-19 epidemic in China. Participants’ characteristics and experiences were obtained by an online questionnaire and telephone review. Psychological distress and sleep problems were measured by the Generalized Anxiety Disorder-7, the Patient Health Questionnaire-9, and the Insomnia Severity Index.

Results.

A total of 23,500 participants were recruited, and 19,372 valid questionnaires were received from 11 centers. Overall, 11.0–13.3% of the participants had anxiety, depression, or insomnia symptoms, and 1.9–2.7% had severe symptoms. The prevalence of psychological and sleep problems has increased. Working as frontline medical staff (Odds Ratio OR = 3.406), living in Hubei Province (OR = 2.237), close contacts with COVID-19 (OR = 1.808), and age 35–49 years (OR = 1.310) were risk factors for anxiety symptoms; no outside activity for 2 weeks (OR = 2.167) and age 35–49 years (OR = 1.198) were risk factors for depression symptoms; and living in Hubei Province (OR = 2.376), no outside activity for 2 weeks (OR = 1.927), and age 35–49 years (OR = 1.262) were risk factors for insomnia symptoms. Only 1.9% of participants received counseling during the epidemic.

Conclusions.

Psychological and sleep problems increased during interpersonal isolation due to COVID-19. Current psychological interventions are far from sufficient.
Determinants of newborn care utilization in Pakistan: Findings from the Demographic and Health Surveys
Authors: Pongpanich Sathirakorn , Ghaffar Abdul , Ghaffar Najma , Majid Hafiz Abdul
Published: August 2020

Background: Information on determinants of postpartum care is essential for public health action, yet this information is scarce in Pakistan. Hence, the current study aimed to determine the factors of newborn postpartum care utilization from the Pakistan Demographic and Health Surveys conducted from 2006–2018.

Methods: We analyzed data from three rounds of cross-sectional, nationally representative Pakistan Demographic and Health Surveys (PDHS) 2006–07, 2012–13, and 2017–18. Multivariable logistic regression models were applied to explore factors associated with utilization of newborn postpartum care within two months.

Results: This study included 5724 women from the 2006–07 PDHS, 7461 from the 2012–13 survey, and 8287 from the 2017–18 survey. The proportion of women receiving newborn postnatal care within the first two months of delivery increased from 13% in 2006–07 to 43% in 2012–13 but dropped to 27% in 2017–18. Respondent’s occupation and prenatal care utilization of maternal health services were common factors that significantly influenced newborn postnatal care utilization within two months. The utilization of postnatal care was greater among women having educated husbands and where the first child was a male in PDHS 2007 round. Higher wealth index and educated respondent had higher postnatal care utilization odds in DHS 2012 and DHS 2018. However, the odds of using postnatal care decreased with the number of household members and total number of children ever born in DHS 2012 and 2018 rounds.

Conclusions: There was a general increase in the proportion of women who utilized postnatal care for their newborns during 2006–2013 but a decrease in 2018. The decreased utilization in 2018 warrants further investigation. Improving women’s economic status, education, employment, and antenatal care attendance and reducing parity may increase newborn postnatal care utilization.
STRATA: A Spreadsheet Tool for Multidimensional Analysis of Operations Research/Management Science Assessment Test Data
Authors: Palocsay Susan W. , Stevens Scott P. , Novoa Luis J.
Published: August 2020

Accrediting organizations in higher education have shifted emphasis from indirect measures such as student course evaluations, focus-group interviews, and employer surveys to direct measurement of student performance using appropriate assessment instruments. In response, we developed a spreadsheet tool for reports and analysis of test assessments (STRATA) to document and evaluate quantitative data from test questions linked to learning objectives in an introductory undergraduate management science (MS) course. STRATA automatically generates a variety of tables and charts that allow us to examine our students’ achievement at three different levels: individual question item, MS topic (subsets of items), and total score. It also tracks test results over time and produces summary reports. In this paper, we discuss STRATA’s features, its usefulness in meeting accreditation requirements, and how it can provide faculty with valuable feedback in ways that encourage meaningful conversations about course content and pedagogy.
TRANSFORMAÇÕES GEOMORFOLÓGICAS NA CIDADE DO RIO DE JANEIRO DURANTE OS SÉCULO XIX E XX
Authors: Da Silva Telma Mendes da Silva , Eduardo Carolina Campos
Published: August 2020

As transformações ocorridas ao longo dos séculos XIX e XX no relevo da cidade do Rio de Janeiro, vinculadas às necessidades de expansão de seu sítio urbano, levaram a uma mudança significativa de sua paisagem natural. O artigo aqui apresentado procura discutir algumas das alterações ocorridas calcadas nos conceitos de paisagem e de relevos tecnogênicos, procurando evidenciar alterações provenientes das intervenções e alterações morfológicas associadas à política de uso e ocupação do terreno. A base metodológica está pautada em análises da produção bibliográfica sobre a evolução urbana e de imagens e registros fotográficos históricos capazes de demonstrarem alterações antrópicas no terreno. Com isso, procuramos elucidar como a cidade foi sendo transformada e expandida, principalmente, através de inúmeros aterros (sobre ecossistemas de manguezais, lagoas e áreas pantanosas), reconhecidos aqui como tipologias de relevo tecnogênico denominado de “terrenos construídos (“made ground”) no campo das pesquisas científicas.
MEMÓRIAS DE UMA EXPERIÊNCIA DE TRINTA DIAS EM MAPUTO-MOÇAMBIQUE
Authors: De Farias Marisa de Fátima Lomba
Published: August 2020

Este artigo resultou da participação no Projeto “Práticas sociais e saberes de mulheres e homens e a produção do território rural no Distrito de Marracuene em Moçambique: viabilidade das alternativas produtivas no mundo da sustentabilidade”, desenvolvido de 2013 a 2017 e estruturado sob uma proposta interdisciplinar e interinstitucional. A minha atuação no referido projeto, no que tange ao contato direto com a população, compreendeu a experiência de permanência em Maputo-Moçambique por trinta dias. O objetivo neste texto é o de apresentar minhas impressões deste período, com o olhar voltado às mulheres e à produção de suas próprias vidas, seja material ou imaterial, por meio de uma metodologia de aproximação e de respeito às diversidades culturais e à organização do trabalho. As observações, os diálogos, os registros em caderno de campo e fotográficos ocorreram em espaços rurais e urbanos, em locais de produção de alimentos e de sua comercialização. Os resultados são indescritíveis. O que ora apresento são manifestações de conhecimentos coletivizados e demonstro, também, relevância em valorizar os aprendizados compartilhados entre os dois países de modo respeitoso, rompendo com as hierarquias impostas pelo conhecimento científico, quando nega ou exclui os saberes tradicionais e os modos de vida alicerçados em culturas díspares.
AUDITORIAS REMOTAS SÃO POSSÍVEIS? COMO FAZER?
Authors: Couto Marcello Guimarães
Published: August 2020

As técnicas e métodos para auditorias remotas já eram previstas e aceitas antes mesmo do surto de COVID-19. Com a pandemia e a necessidade de distanciamento social, tornaram-se uma ferramenta frequente e amplamente utilizada, nesta fase que chamamos agora de “novo normal”. Este artigo aborda a sua previsão normativa, os principais cuidados e a sua viabilidade.
‘Getting the keys to my practice is the highlight of my career so far’
Authors: Jackson Rachel
Published: August 2020

Dental nurse Rachel Jackson opened the doors to her dental practice just two years ago. For her, the last 17 years has been a journey of discovery, learning, upskilling and refining…
Maternity leave and the COVID-19 pandemic
Authors: Buxton Sarah
Published: August 2020

What are the next steps for those dental nurses who are having babies? Sarah Buxton shares some legal insight
A dental nurse by any other name
Authors: Needham Helen
Published: August 2020

Strive to be the best assistant you can be… Helen Needham talks about titles and responsibilities
Imagine that – revision in a flash!
Authors: Walking Francesca
Published: August 2020

Trainee dental nurse Francesca Walking on how her home-crafted learning tools are helping fellow students visualise a successful future
Upping your game
Authors: Morris Rebecca
Published: August 2020

Rebecca Morris considers how to achieve your goals despite the pandemic's effect on dental nurse education
Why is the ARF the same for all DCPs?
Authors: Howe Shaun
Published: August 2020

Dental therapist Shaun Howe shares his insight into the General Dental Council and its fee setting
Design of a high-precision, 0.5  m aperture Cassegrain collimator
Authors: Karcı Ozgur , Ekinci Mustafa
Published: August 2020

We present the realization of a high-precision, 0.5 m aperture size Cassegrain collimator system. The optical design, the optomechanical design, the mirror manufacturing, and the telescope alignment with a performance evaluation are extensively discussed. The optical design of the collimator is based on the Cassegrain telescope design with two aspheric mirrors. An athermalized, high stability optomechanical structure is conceived for the collimator to meet stringent performance requirements. The high-quality mirrors are made of low-expansion Zerodur glass–ceramic and the primary mirror is light-weighted to 63% of its initial weight. The design of a dedicated five-axis flexure mechanism driven by nanopositioner stages to compensate the secondary mirror misalignments is given. Primary and secondary mirrors with aspheric surfaces are manufactured, and their forms are measured by computer-generated holograms with a phase-shifting Fizeau interferometer. The alignment strategy is based on minimizing Fringe Zernike coefficients of wavefront decomposition measured by an autocollimation test setup. The alignment sensitivity and corresponding Fringe Zernike coefficient terms are determined by the ray-tracing software that introduces the intentional misalignments of the secondary mirror. The on-axis alignment of the collimator is performed with the guidance of sensitivity analysis results. The final root-mean-square wavefront error for the collimated beam is measured to be

0.021

λ

.
Joint Retinex-based variational model and CLAHE-in-CIELUV for enhancement of low-quality color retinal images
Authors: Huang Zongheng , Tang Chen , Xu Min , Lei Zhenkun
Published: August 2020

Poor visual quality of color retinal images greatly interferes with the analysis and diagnosis of the ophthalmologist. In this paper, we propose an enhancement method for low-quality color retinal images based on the combination of the Retinex-based enhancement method and the contrast limited adaptive histogram equalization (CLAHE) algorithm. More specifically, we first estimate the illumination map of the entire image by constructing a Retinex-based variational model. Then, we restore the reflectance map by removing the illumination modified by Gamma correction and directly enable the reflectance as the initial enhancement. To further enhance the clarity and contrast of blood vessels while avoiding color distortion, we apply CLAHE on the luminance channel in CIELUV color space. We collect 60 low-quality color retinal images as our test dataset to verify the reliability of our proposed method. Experimental results show that the proposed method is superior to the other three related methods, both in terms of visual analysis and quantitative evaluation while testing on our dataset. Additionally, we apply the proposed method to four publicly available datasets, and the results show that our methods may be helpful for the detection and analysis of retinopathy.
Extraordinary optical transmission in nano-bridged plasmonic arrays mimicking a stable weakly-connected percolation threshold
Authors: Akinoglu Eser Metin , Luo Lingpeng , Dodge Tyler , Guo Lijing , Akinoglu Goekalp Engin , Wang Xin , Shui Linling , Zhou Guofu , Naughton Michael J. , Kempa Krzysztof , Giersig Michael
Published: August 2020

Ultrasensitive sensors of various physical properties can be based on percolation systems, e.g., insulating media filled with nearly touching conducting particles. Such a system at its percolation threshold featuring the critical particle concentration, changes drastically its response (electrical conduction, light transmission, etc.) when subjected to an external stimulus. Due to the critical nature of this threshold, a given state at the threshold is typically very unstable. However, stability can be restored without significantly sacrificing the structure sensitivity by forming weak connections between the conducting particles. In this work, we employed nano-bridged nanosphere lithography to produce such a weakly connected percolation system. It consists of two coupled quasi-Babinet complementary arrays, one with weakly connected, and the other with disconnected metallic islands. We demonstrate via experiment and simulation that the physics of this plasmonic system is non-trivial, and leads to the extraordinary optical transmission at narrowly defined peaks sensitive to system parameters, with surface plasmons mediating this process. Thus, our system is a potential candidate for percolation effect based sensor applications. Promising detection schemes could be based on these effects.
Anomalous relative intensity noise transfer in ultralong random fiber lasers
Authors: Rota-Rodrigo Sergio , Rizzelli Giuseppe , Leandro Daniel , Nuño J. , Lopez-Amo Manuel , Santarelli Giorgio , Ania-Castañón Juan Diego
Published: August 2020

We present, for the first time, an experimental demonstration of RIN noise transfer dampening at low frequencies in random distributed feedback ultralong Raman fibre lasers based on conventional telecommunication fibres. Furthermore, we present a thorough theoretical description of the phenomenon and demonstrate how our model can be used to predict the observed behaviour, identifying the general requirements for system improvement through RIN transfer reduction.
Coherent feedback induced transparency
Authors: Fan Bixuan , Ning Jiahui , Xie Min , Liu Cunjin , Guan Shengguo
Published: August 2020

We propose a light transparency effect induced by coherent feedback. By studying a system comprising a linear optical cavity controlled by a linear coherent feedback loop, we show that the optical signal field passing through the system cavity exhibits novel transparency behaviors. Unidirectional coupling between the system and its feedback control loop enables the group velocity and transmission rate to be tuned separately, thus maintaining the unity transmission rate when the group velocity is significantly suppressed. Furthermore, we demonstrate that simply applying a certain phase shift to the output of the system cavity and feeding it back into the system can induce perfect transmission. Our proposal offers a simple and effective way to control light transmission and group velocity using only linear optics elements.
Topological edge states of nonequilibrium polaritons in hollow honeycomb arrays
Authors: Ma Xuekai , Kartashov Yaroslav V. , Ferrando Albert , Schumacher Stefan
Published: August 2020

We address topological currents in polariton condensates excited by uniform resonant pumps in finite honeycomb arrays of microcavity pillars with a hole in the center. Such currents arise under combined action of the spin–orbit coupling and Zeeman splitting, which breaks the time-reversal symmetry and opens a topological gap in the spectrum of the structure. The most representative feature of this structure is the presence of two interfaces, inner and outer ones, where the directions of topological currents are opposite. Due to the finite size of the structure, polariton–polariton interactions lead to coupling of the edge states at the inner and outer interfaces, which depends on the size of the hollow region. Moreover, switching between currents can be realized by tuning the pump frequency. We illustrate that currents in this finite structure can be stable and study bistability effects arising due to the resonant character of the pump.
In vivo deep-brain imaging of microglia enabled by three-photon fluorescence microscopy
Authors: Cheng Hui , Tong Shen , Deng Xiangquan , Li Jia , Qiu Ping , Wang Ke
Published: August 2020

Microglia act as the first and main form of active immune defense in brain. However, in animal models, research on these cells is limited to the superficial layer of the brain, due to the lack of a deep-imaging technique. Here we break this depth limit using three-photon fluorescence (3PF) microscopy excited at the 1700-nm window. Three-photon action cross-section (

η

σ
3

) measurement lays the basis for dye selection and the resultant maximization of 3PF generation. 3PF imaging suppresses the surface background, leading to a much improved signal-to-background ratio compared to the commonly used two-photon microscopy (2PM). We can image microglia 1124 µm below the brain surface in vivo, 3.7 times deeper than previous results using 2PM for microglia imaging. This technique enables us to visualize microglia in the white matter layer in vivo for the first time.
Parental knowledge, attitude, and behavioral factors in immunization response following a diphtheria outbreak in children in 2018-2019
Authors: Arfimita Nabila , Surjono Edward
Published: August 2020

Background A diphtheria outbreak was declared at the end of 2017. The outbreak response immunization (ORI) was a key Indonesian government strategy to control diphtheria in three outbreak areas. This strategy was implemented starting December 11, 2018.  Parents’ positive knowledge, attitude, and behavior regarding diphtheria and the diphtheria ORI may influence the coverage of diphtheria ORI in Indonesia.

Objective To assess for relationships between parental knowledge, attitude, and behavior to coverage of diphtheria ORI in children. 

Method This cross-sectional study was conducted at Kapuk Muara Public Elementary School 03, North Jakarta from November 2018 to August 2019. The respondents were parents of the schoolchildren. Parents filled questionnaires about their knowledge, attitude, and behavior with regards to diphtheria ORI coverage in children.

Results The coverage of diphtheria ORI in children was 61.8%. From 110 respondents, 40.9% of parents had at least sufficient knowledge, 73.8% had good attitude, and 55.5% had good behavior regarding diphtheria and diphtheria ORI. Parental knowledge had no significant association to coverage of diphtheria ORI in their children. However, there were significant relationships between parental attitude and behavior to coverage of diphtheria ORI in their children.

Conclusion The coverage of diphtheria ORI needs improvement. Most parents have sufficient level of knowledge, good attitude, and good behavior towards diphtheria and diphtheria ORI. There is no association between parental knowledge about diphtheria and diphtheria ORI to coverage of diphtheria ORI, but there are significant association of parental attitude and behavior toward diphtheria ORI coverage.
Influence of screen time and sleep duration on obesity in early adolescents
Authors: Malik Shafira Maharani , Rahmadi Farid Agung , Wistiani Wistiani
Published: August 2020

Background Behavioral and environmental factors increase the risk of obesity. Many Indonesian children have their own smartphones and engage in excessive screen time, which may negatively impact their nutritional status and sleep duration. However, to our knowledge no studies have explained the magnitude of the influence of screen time and sleep duration on obesity in early adolescents.

Objective To analyze the influence of screen time and sleep duration on obesity in children aged 10-13 years.

Methods This case-control study was done from April to June 2019 in Semarang, Central Java. Subjects comprised 70 obese and 70 non-obese children, based on CDC body mass index-for-age percentiles. Subjects were recruited from 7 primary schools. Children’s screen time and sleep duration data were collected from the modified 3DPAR questionnaire. Statistical analysis was conducted using Chi-square and logistic regression tests.

Results Obesity had significant associations with short sleep duration (aOR=4.20; 95%CI 1.80 to 9.78) and long computer screen time (OR=4.13; 95%CI 1.28 to 13.25). Total screen time on other media or all media combined were not associated with obesity since both the obese and non-obese groups spent >2 hours/day on screens. Short sleep duration was the dominant risk factor for obesity (OR=4.08; 95%CI 1.78 to 9.35).

Conclusion Short sleep duration (<9 hours/day) is associated with and a dominant risk factor for obesity in children aged 10-13 years. However, screen time is not associated and not influential as a dominant risk factor for obesity, despite the high odds of obesity in children with long computer screen time (>2 hours/day).
Validation of the Indonesian Version of Modified Checklist for Autism in Toddlers: a diagnostic study
Authors: Salim Hendra , Soetjiningsih Soetjiningsih , Windiani I Gusti Ayu Trisna , Widiana I Gede Raka , ASPR PITIKA
Published: August 2020

Background Autism is a developmental disorder for which early detection in toddlers is recommended because of its increased prevalence. The Modified Checklist for Autism in Toddlers (M-CHAT) is an easy-to-interprete tool that can be filled out by parents. It has been translated into the Indonesian language but needs to be validated.

Objective To evaluate the diagnostic validity of the Indonesian version of M-CHAT in detection of autism spectrum disorder in Indonesia.

Methods A diagnostic study was conducted at Sanglah Hospital, Denpasar, Bali, from March 2011 to August 2013. Pediatric outpatients aged 18 to 48 months were included. The Indonesian version of the M-CHAT tool was filled by parents. Autism assessment was done according to the Diagnostic and Statistical Manual of Mental Disorders, fourth edition (DSM-IV-TR). The assessment results were analyzed with the MedCalc program  software, in several steps: (i) reliability of M-CHAT; (ii) description, distribution, and proportion to determine the characteristics of the subjects of research; and (iii) validity of M-CHAT compared to the gold standard DSM-IV-TR by a receiver operating characteristic curve and several area under the curve cut-off points, in order to assess the sensitivity, specificity, positive predictive value, negative predictive value, and positive and negative likelihood ratio, accompanied by the 95% confidence interval of each value.

Results The Indonesian version of M-CHAT in toddlers had 82.35% sensitivity and 89.68% specificity, using the cut-off point of more than 6 failed questions.

Conclusion The Indonesian version M-CHAT translated by Soetjiningsih has optimal diagnostic validity for detection of autism in toddlers.
Case Item Creation and Video Case Presentation as Summative Assessment Tools for Distance Learning in the Pandemic Era
Authors: Amin Hebat Allah , Khalil Haidy , Khaled Doaa , Mahdi Mamdouh , Fathelbab Mohamed , Gaber Dalia A.
Published: August 2020

There is an urgent need for more diverse methods for student evaluation, given the sudden shift to online learning necessitated by the Coronavirus Disease 2019 (COVID-19) pandemic. Innovative assessment tools will need to cover the required competencies and should be used to drive self-learning. Self and peer assessments may be added to the traditional classroom-based evaluations in order to identify individual insecurities or overconﬁdence. Identification of these factors is essential to medical education and is a focus of current research. A modified operational assessment was introduced for the evaluation of third-year medical students. This intervention has facilitated sustained education and has promoted interactive student learning. Members of the entering class of 2017 participated in an integrated team and a competency-based online project that involved innovative item creation and case presentation methods.

Results: The new assessment process has been implemented successfully with positive feedback from all participants; a usable product has been generated.

Conclusions: We created new assessment tools in response to the COVID-19 pandemic that have been used successfully at our institution. These tools have provided a framework for integrated and interactive evaluations that can be used to facilitate the modification of traditional assessment methods.
Please delete Article. A revised version will come up in a few weeks.
Authors: Fernandes Rodrigo
Published: August 2020

Please delete Article. A revised version will come up in a few weeks.
Avaliação da centrífuga rotarex na determinação do teor de ligante e granulometria de diferentes concretos asfálticos
Authors: Gonçalves Bruno César Silva , Pereira Deividi Da Silva , Specht Luciano Pivoto , Pinheiro Rinaldo José Barbosa
Published: August 2020

O presente artigo avaliou os procedimentos de determinação de teor de ligante e granulometria de concretos asfálticos, utilizando o método de extração de ligante por centrifugação com o Rotarex. No estudo foram utilizados: faixa B e C do DNIT; 6 diferentes rochas; 3 teores de ligante; CAP 50-70 e AMP 60/85-E-SBS e solvente tricloroetileno, avaliando suas influências nos resultados. Desta maneira, obter o teor de ligante e a granulometria por meio de análise estatística: desvio padrão; erro absoluto e ANOVA. Nessa pesquisa, os teores de ligante obtidos por intermádio da centrífuga revelaram uma baixa confiabilidade. Os valores de desvio padrão e erro absoluto médio extrapolaram o limite de 0,3% de variação de teor de ligante do DNIT para produção de concretos asfálticos, colocando em dúvida a centrífuga como metodologia a ser utilizada em controle de produção e qualidade. O erro absoluto médio da obtenção de teor de ligante mostrou-se inversamente proporcional ao teor empregado na mistura, impossibilitando um fator de correção para calibração. Esses erros da centrífuga estão diretamente ligados à sua extração ineficiente do ligante asfáltico com uma alta sensibilidade dos seus dados. A análise granulométrica foi igualmente influenciada pela extração incompleta do ligante pela centrífuga, onde o acúmulo de material fino junto ao ligante não extraído em peneiras mais grossas provocou distorções nas curvas granulométricas. Em várias misturas as curvas extrapolaram equivocadamente os limites de trabalho.
Estudo dos efeitos de produtos rejuvenescedores no comportamento físico, químico e reológico de ligante asfáltico envelhecido
Authors: Silva João Paulo Souza , De Farias Márcio Muniz
Published: August 2020

A reciclagem é um tema que vem ganhando espaço em diversas áreas da engenharia. Quando se reutiliza um material em obras civis, indiretamente há uma contribuição para a preservação da natureza. Dentro deste contexto, a reciclagem de revestimentos asfálticos é um assunto que desperta grande interesse, mas que requer estudos mais aprofundados. Assim, este trabalho tem como objetivo estudar os efeitos de produtos rejuvenescedores sobre o comportamento do ligante asfáltico envelhecido, para possível aplicação na reciclagem de revestimentos de pavimentos asfálticos. Inicialmente foi extraído o ligante residual e, em seguida, foram adicionados rejuvenescedores a base de alcatrão (RejuvaSeal) e outro a base de óleo de xisto, comercialmente conhecido como AR-5, AR-250 e AR-500, nas taxas de 15, 20 e 25%, a fim de verificar qual a porcentagem seria apropriada para recuperar as características originais do ligante envelhecido. Dentre as principais conclusões encontradas neste estudo, destaca-se que a mistura contendo 20% de AR-5 apresenta o melhor desempenho físico e mecânico quando comparada a uma mistura contendo ligante asfáltico novo (CAP 50-70).
Considerações sobre o ensaio de retorno elástico por torção para asfaltos modificados
Authors: Da Cruz Thiago Hilário , Woellner Thiago Seliger , De Gouveia Lilian Tais , Senger Luciano José
Published: August 2020

O objetivo deste trabalho é analisar o ensaio de Retorno Elástico por Torção (NLT-329/91) quanto ao tempo de giro da amostra de asfalto e quanto ao controle da temperatura de banho do asfalto durante o retorno elástico, assim como a Repetibilidade e a Reprodutibilidade. O ensaio de Retorno Elástico por Torção avalia a recuperação elástica dos asfaltos e consiste em submeter uma amostra de asfalto à uma torção de 180°, sendo o giro de torção realizado em um intervalo de 3 s a 5 s. O resultado do ensaio é expresso em porcentagem de recuperação elástica, após 30 minutos de retorno elástico. Neste estudo, foram utilizados três tipos de ligantes modificados. Os ensaios foram executados por dois operadores em tempos de giro entre 3 s e 5 s e entre 30 s e 50 s, com e sem controle de temperatura de banho da amostra durante o tempo de retorno elástico. Os resultados mostraram que o tempo de giro influencia os resultados de retorno elástico. Quanto maior o tempo de giro, menor o retorno elástico. A pequena variação da temperatura de banho do asfalto durante o tempo de retorno elástico não influenciou os resultados. No entanto, recomenda-se que a temperatura de banho seja mantida constante. A Repetibilidade, mesmo operador e mesmo equipamento, e Reprodutibilidade do ensaio se mostraram elevadas, ou seja, as diferenças entre resultados replicados por um mesmo operador, assim como as diferenças de resultados replicados entre operadores distintos, apresentaram variabilidade baixa. A variação total foi de 3,5% em relação à média e desvio padrão médio de 2,3.
A fuzzy multicriteria method for ranking the factors that influence the settlement of Brazilian highway speed limits
Authors: Lanzaro Gabriel Andrade , Andrade Michelle
Published: August 2020

O processo de definição da velocidade limite em rodovias envolve uma série de fatores, não claramente definidos em termos de uma ordem de relevância que possibilite o especialista – responsável por tomar decisão – optar pela melhor escolha. Como o estabelecimento de um limite de velocidade se caracteriza pela subjetividade, sendo um processo regido pela incerteza e pela imprecisão, a lógica fuzzy mostra-se como alternativa para a solução deste problema. Assim, especialistas da área foram questionados quanto à influência de fatores pré-determinados na velocidade limite de rodovias e, em seguida, foi aplicado um método fuzzy multicritério, otimizado por meio de um algoritmo genético, para que as variáveis fossem hierarquizadas em termos de pesos e, consequentemente, relevância. O método convergiu a resultados satisfatórios, possibilitando não somente a concepção de um sistema especialista para o estabelecimento de velocidades limites, mas também aplicações em outras áreas.
Market Orientation and Innovation Performance: Mediating Effects of Customer Engagement in SMEs
Authors: Wahyuni Ni Made , Sara I Made
Published: August 2020

This study's objective is to develop an innovation performance model based on the role of market orientation and customer engagement. Market-oriented practices through customer engagement will enable companies to achieve innovation performance. This research was conducted on small and medium enterprises (SMEs) engaged in manu-facturing in Bali. A conceptual model was developed to determine the mediating role of customer engagement in the relationship between market orientation and innovation performance. The research design used was cross-sectional. Quantitative data were collected from 242 respondents by distributing questionnaires to managers and own-ers of manufacturing SMEs in Bali. The model was tested using Partial Least Square (PLS). The results of this study show that market orientation has a significant positive effect on innovation performance, market orientation has a positive effect on customer engagement, customer engagement has a positive effect on innovation performance, and customer engagement partially mediates the relationship between market orienta-tion and innovation performance. The results of this study are expected to be able to increase managers' insight and understanding of the mechanisms of how market ori-entation and customer engagement can contribute to innovation performance in ex-port-oriented SMEs.
Analysis of Access to Financial Services on Poverty Alleviation with MARS Approach
Authors: Effendi Moch Bisyri , Sunani Avi
Published: August 2020

This study aimed to determine the barriers of public access to financial services and their effects on poverty alleviation. The sample used was 6 ASEAN countries (Indonesia, Singapore, Malaysia, Vietnam, Thailand, and the Philippines) from 2006 to 2015. The analytical method used was the MARS. MARS is one of the nonparametric regression methods as an alternative to the multiple linear regression method, which must fulfill parametric assumptions. The results of the study using MARS show that the model formed has a high coefficient of determination, and criteria of the test of the suitability of the model are met. In other words, multivariate adaptive regression spline (MARS) can explain well the variability of the independent variables on the dependent variable. The results of the hypothesis testing using the MARS method show that indicators of macroeconomic, social, bank characteristics, institutions, and regulations affect access to financial services (AFS) and AFS affect poverty alleviation. This finding shows that increasing AFS will affect poverty reduction, and to increase public AFS can be done by minimizing macroeconomic, regulatory, social, bank, and institutional constraints.
The Determinants of Capital structure in Ethiopian Private Commercial Banks: A Panel Data Approach
Authors: Assfaw Abdu Mohammed
Published: August 2020

A wrong capital structure decision causes business frailer. However, still, what determinants optimal capital structure decision of companies remain the puzzles of many research scholars. This study is, therefore, aimed to investigate the determinants of the capital structure decision of private commercial banks in Ethiopia. The secondary data were obtained from audited annual financial reports of ten private commercial banks and the National Bank of Ethiopia covering the period of 2010-2018. The panel data were analyzed with a clustered robust random effect regression model. The study reveals that there is a significant positive relationship between earning volatility, size of banks, and taxation with leverage while profitability and asset tangibility are found to have a significant negative effect on the banks' leverage decision. The empirical findings of the study imply that the two capital structure theories, static trade-off and pecking order, are essentially explaining the capital structure decision of Ethiopian private commercial banks. Private commercial banks in Ethiopia should pay due attention to the microeconomic variables without overlooking the macroeconomic condition while articulating their optimal capital mix which can minimize the weighted average cost of capital and enhance the value of the company.
Adolescência em dois livros didáticos de ciencias
Authors: Souza da Luz Mateus , Conterno Solange de Fátima Reis , Machineski Gicelle Galvan , Martins Letícia Katiane , Reis Alessandra Crystian Engles dos , Meglhioratti Fernanda Aparecida
Published: August 2020

Este estudo teve como objetivo analisar dois livros didáticos de Ciências do oitavo ano do Ensino Fundamental, fornecidos pelo Programa Nacional do Livro Didático do Brasil, utilizados em um munícipio da região Oeste do Paraná, em relação aos temas e aos conceitos pertinentes à adolescência. Trata-se de um estudo exploratório-descritivo, do tipo qualitativo fundamentado na análise de conteúdo. Foi possível constatar que os dois livros abordam assuntos relacionados ao adolescente, porém de maneira restrita. Mediante a importância dos conceitos e a carência de informação, evidencia-se que as inclusões dos assuntos relacionados à essa faixa etária são vitais para a abordagem pedagógica. Pode-se afirmar, que o livro didático nem sempre contempla os assuntos pertinentes a essa fase, devendo o professor enriquece-lo, pois, temas importantes podem estar negligenciados nas obras.
Un panorama de la modelación matemática en los encuentros colombianos de matemática educativa entre 2012-2015
Authors: Mancera Ortiz Gabriel , Camelo Bustos Francisco Javier
Published: August 2020

Presentamos el análisis, los resultados y el método de una revisión de tipo documental que da cuenta de aspectos, que consideramos importantes, sobre el reconocimiento que diversos trabajos han venido haciendo sobre la modelación matemática en Encuentros Colombianos de Matemática Educativa (ECME) celebrados entre el 2012 y el 2015. Para ello, hemos adaptado las tres etapas propuestas por Planas y Valero (2016) para el análisis de estados del arte: Selección (de literatura), estructuración (búsqueda de perspectivas, líneas y conexiones) y análisis (novedades), con la intención de identificar posibles perspectivas, líneas de preocupación, conexiones (o desconexiones) entre esas líneas, representantes y regiones de donde proceden los trabajos. Encontramos que, los trabajos se clasifican en ocho perspectivas, evidenciando mayor producción en la perspectiva educacional, socio crítica y realística. En cuanto a las líneas de preocupación señalamos la existencia de un énfasis en el desarrollo de trabajos que plantean a la modelación como medio para la enseñanza o aprendizaje de contenidos; seguido de una preocupación por utilizarla para el desarrollo de algún tipo de pensamiento crítico. De igual manera, dentro de lo que se logra evidenciar, encontramos que existe un mayor interés de producción y difusión en los trabajos que proceden de las ciudades de Bogotá, Medellín y Cali.
Adição de monômios na perspectiva da teoria das situações didáticas
Authors: Dos Santos Jonas , Madruga Zulma Elizabete de Freitas , Santana Eurivalda Ribeiro dos Santo
Published: August 2020

Este artigo apresenta uma pesquisa que teve como objetivo analisar as possíveis contribuições da Teoria das Situações Didáticas para a construção do conceito de adição de monômios por estudantes do 8º ano do Ensino Fundamental. A escola onde foi aplicada a intervenção faz parte da rede municipal de uma cidade, localizada na região cacaueira do sul da Bahia, Brasil. A situação didática se deu por meio de um problema no qual os estudantes teriam que extrair os monômios e efetuar a adição com o objetivo de encontrar a representação do lucro de vendas. Esses estudantes foram divididos em quatro grupos com quatro integrantes. Durante o desenvolvimento foram observadas as motivações e inquietações dos estudantes para solucionar o problema. Assim como os obstáculos epistemológicos e as dificuldades enfrentadas por eles para expressarem com clareza as etapas do desenvolvimento da situação. A Teoria das Situações Didáticas foi o aporte teórico para a construção e aplicação da situação e os resultados foram analisados de forma qualitativa. Como resultado, observou-se que a situação didática motivou os estudantes a questionarem e buscar estratégias para conseguirem construir o conceito de adição de monômios.