bluuebunny/crossref_metadata_2025_split huggingface dataset:
Students' Perceptions of Peer Teaching in a Coding Course
Authors: SARSAR Fırat , ASİNO Tutaleni İ. , BROWN Wilmon 
Published: December 2019

Mobile learning in education has evolved over the last decade and a half. Associated with this evolution is the increased popularity of teaching how to code using mobile technologies. Then again, finding alternative methods to teach coding, such as peer teaching, might affect learning. Peer teaching is a reciprocal learning relationship between peers. This mixed method case study aimed to explore students’ perceptions of peer teaching in an mLearning coding course. Twentysix participant learners, and three peer teachers, voluntarily participated in the study for six weeks. 77% of participants found that learning from their peers was fun, satisfying and more informative than they expected. However, 42% of participants highlighted that they did not have enough confidence to peer-teach the material they learned during the peer teaching process. Thus, it is important to design a teaching process which considers culture, students' expectations, and students' needs, because those factors affect the learning process.
Análisis Epidemiológico de los Tratamientos Quirúrgicos en el área de Cirugía Oral y Maxilofacial en el Hospital Metropolitano. Periodo 2015-2018. Estudio Retrospectivo.
Authors: Olalla Lopez Evelyn Andrea , Sandoval Portilla Fernando José , Sandoval Vernimen Fernando 
Published: December 2019

Introducción: La cirugía oral y maxilofacial es una especialidad medico quirúrgica, que se ocupa del diagnóstico y tratamiento de traumatismos faciales, anomalías dento faciales, fisuras labio palatinas, infecciones de origen odontogénico, procesos patológicos, oncológicos o neoplásicos que involucran la cavidad bucal, cara y territorio craneofacial, así como de los órganos y estructuras cervicales relacionadas directa o indirectamente con las mismas y que deben ser atendidos quirúrgicamente.
Objetivo: El objetivo de este estudio es determinar la etiología tratamientos quirúrgicos que se realizaron en el Hospital Metropolitano y su prevalencia durante el periodo 2015-2018
Materiales y Métodos: Se realizo un estudio de tipo descriptivo, cuantitativo, retrospectivo y transversal. La muestra de la investigación fue de 245 pacientes que fueron atendidos e intervenidos quirúrgicamente por el especialista de Cirugía oral y Maxilofacial en el Hospital Metropolitano durante el periodo 2015-2018. La información se clasifico en base al diagnóstico, la edad, el sexo y el tipo de procedimiento quirúrgico.
Resultados: La prevalencia de patología de origen no traumático corresponde al 79,18% y la de etiología traumática 20,82 %. Siendo el de mayor prevalencia dentro de la patología no traumática las anomalías dentofaciales, seguidas por infecciones de origen odontogénico, fisuras labio palatinas y patología oral.
Conclusiones: La mayor prevalencia de cirugías realizadas durante el periodo 2015-2018 por el especialista Cirujano oral y Maxilofacial en el Hospital Metropolitano corresponden a cirugías de etiología no traumática y dentro de este grupo la de mayor frecuencia es la cirugía ortognática para corrección de anomalías dentofaciales.
Palabras Claves: epidemiologia, tratamientos quirúrgicos, cirugía maxilofacial, estudio retrospectivo.
Determination of the isolated Rutin And Quercetin Contents In Syrian Ficus Carica L. Leaves Extracts
Authors: ALSHAAL Shaza , DAGHESTANİ Manal , KARABET Francois 
Published: December 2019

The
major flavonoid glycoside in Syrian ficus leaves extracts (rutin) was
identified quantitatively and isolated, then transformed into its aglycone
(quercetin) by acidic hydrolysis of ethanolic and aqueous extracts. The
influence of the hydrolysis process on isoquercitrin content was investigated
too. The determination was carried out by high performance liquid
chromatography, and the isolation done by thin layer chromatography plates,
then identified by mass spectrum. Results showed that the rutin content in the
ethanolic extract 78.79% was higher than the aqueous one 61.90%, by using
ultrasonic extraction procedure, the quercetin content by hydrolysis process
was more satisfaction in the ethanolic extract 81.00% than the aqueous one
72.53%. Acidic hydrolysis process destroyed some of the isoquercitrin in the
extracts, the detection of isoquercitrin was done qualitatively by noticing the
mass spectrum and the photo diode array spectrum. Rutin and quercetin were successfully
isolated, the relative peak areas for isolated rutin and quercetin were 99.80%,
96.46%, respectively. It was concluded that rutin can be easily converted into
quercetin by acidic hydrolysis, allowing the use of Syrian ficus leaves
extracts as an optimal cheap natural antioxidants source.
Prevalencia y factores asociados a la infección por C. trachomatis, N. gonorrheae, T. vaginalis, C. albicans, sífilis, VIH y vaginosis bacteriana en mujeres con síntomas de infección vaginal en tres sitios de atención de Bogotá, Colombia, 2010
Authors: Ángel-Müller Edith , Rodríguez Andrea , Núñez-Forero Lilian M. , Moyano Luisa F. , González Patricia , Osorio Elkin , Díaz Luz A. , Rodríguez-Malagón Nelcy , Ruiz-Parra Ariel I. , Tolosa Jorge E. , Gaitán-Duarte Hernando 
Published: December 2019

Objetivo: estimar la prevalencia y etiología de las infecciones de transmisión sexual, y de las infecciones endógenas en mujeres en edad reproductiva con síntomas de infección del tracto genital inferior sintomáticas, y describir los factores asociados.
Materiales y métodos: estudio de corte transversal en tres centros de atención en Bogotá. Se realizó el diagnóstico etiológico mediante puntaje de Nugent para vaginosis bacteriana (VB), cultivo para Candida, y frotis en fresco para trichomonas. En un subgrupo de pacientes se realizó cultivo In Pouch TM para T. vaginalis (TV), PCR para C. trachomatis (CT) y N. gonorroheae (NG), y pruebas serológicas para sífilis y VIH. Los factores de riesgo fueron evaluados comparando los dos grupos por medio del Odds Ratio (OR) y el intervalo de confianza del 95%.
Resultados: 1385 mujeres fueron incluidas, de ellas 115 (8,3%) eran trabajadoras sexuales. Se confirmó la presencia de alguna infección del tracto genital (ITG) en 731 (52,7%) de las mujeres; 560 (40,4%) presentaron infecciones endógenas y 170 (12,3%) infecciones de transmisión sexual (ITS). La etiología más frecuente fue la VB en 549 (39,6%), seguida por candidiasis en 153 (11%). CT fue detectada en 134 (9,7%) y NG en 19 (1,4%). TV fue detectada por frotis en fresco en 11 (0,8%) y por cultivo en 8 de 634 (1,2%), sífilis en 12 (0,8%) y VIH en 1 (0,07%). Las mujeres trabajadoras sexuales tuvieron mayor riesgo de presentar cualquier ITS (OR: 2,0; IC 95% 1,2-3,3). Las mujeres con ITS tuvieron una edad promedio de 27,9 (± 7,8), y aquellas que no tenían ITS de 31,9 (± 8,9) años. El consumo de licor con frecuencia entre diaria y semanal fue mayor en las mujeres con ITS (OR: 2,6; IC 95%: 1,4-4,5).
Conclusiones: se identificó la etiología en el 52,7% de las mujeres que consultaron por síntomas de infección del tracto genital inferior. La infección más frecuente fue vaginosis bacteriana, y clamidia dentro de la infecciones de transmisión sexual. No se identificó ninguna etiología infecciosa específica en el 47,3% de las mujeres aun cuando se utilizó el patrón de oro diagnóstico para los diferentes microorganismos.
Educação física e o fator neurotrófico derivado do cérebro (BDNF) na aprendizagem escolar
Authors: Ramos Jorge Marcos , Galdeano Denival Soares 
Published: December 2019

Objetivo: O objetivo dessa pesquisa foi fazer uma revisão sistemática para verificar a relação do exercício físico e o BDNF na aprendizagem. Como objetivos específicos: verificar qual o tipo de exercício é mais indicado; intensidade; relação com o gênero e com a faixa etária e ainda o melhor momento para sua realização. Metodologia: A busca pelos documentos foi realizada nas bases de dados: PubMed, LILACS e Google Acadêmico. Foram considerados artigos de revisão, experim entais e dissertações (Doutorado e Mestrado) publicados nos últimos vinte anos (1996 – 2016), escritos em inglês, espanhol e português. Como critérios de inclusão testes realizados em seres humanos e em modelos animais; relacionando à prática de exercícios com o BDNF e a sua influência na aprendizagem. Como critérios de exclusão os documentos que não apresentaram dados como: gênero, idade, intensidade, número e tempo de cada sessão. Foram selecionados 120 documentos, restando somente 19, segundo os critérios de inclusão. Resultado e Discussão: As pesquisas em neurociências relacionadas à educação contribuem para o aprimoramento das práticas pedagógicas levando em conta as funções encefálicas e suas relações com a aprendizagem. O Fator Neurotrófico Derivado do Cérebro (BDNF) tem como função promover a sobrevivência dos neurônios. O exercício físico promoveu alterações positivas nas concentrações de BDNF estando relacionado à melhora do desempenho neurológico. Conclusão: O exercício aeróbio parece ser o mais indicado com intensidade vigorosa para o sexo masculino e a intensidade moderada para o feminino, as intervenções com tempo superiores há 20 minutos e com mais de uma sessão foram mais indicadas, contudo são necessárias novas pesquisas.
Valgo dinâmico de joelho e desempenho de salto entre atletas jovens de voleibol
Authors: Binow-Moreira Caroline , Sarro Karine Jacon , Lira Claudio Andre Barbosa de , Oliveira Hudson Renato de Paula , Rufo-Tavares Weverton , Andrade Marilia dos Santos , Vancini Rodrigo Luiz 
Published: December 2019

Objetivo: O valgo dinâmico de joelho é uma disfunção de movimento muito comum entre os atletas de vôlei, sendo fator de risco para lesões nessa articulação, o que poderia impactar negativamente a produção de potência muscular. Dessa forma, o objetivo deste estudo foi avaliar a influência da lateralidade do valgo dinâmico de joelho (uni- vs. bi-lateral) no desempenho do salto horizontal de atletas jovens de vôlei. Metodologia: Para tanto, foram selecionados 22 atletas de voleibol competitivos (oito do sexo masculino e 14 do feminino) que foram divididos nos grupos: valgo de joelho unilateral [VU - n=10, idade (anos): 13,7±1,4; massa corporal (kg): 56,9±12,9; estatura (cm): 163,5±9,2] e bilateral [VB - n=12, idade (anos): 13,6±2,3; massa corporal (kg): 52,8±13,8; estatura (cm): 165,91±8,65]. Os atletas realizaram três saltos horizontais e as distâncias horizontais obtidas (a melhor de três tentativas em cm) foram submetidas ao teste t para amostras independentes para verificar diferenças entre os grupos VU e VB. Resultados e discussão: Não foram observadas diferenças significativas entre os grupos VU vs. VB no teste de salto horizontal (VU: 166,2 ± 22,0 cm; VB: 162,6 ± 21,3 cm; p=0,703). Conclusão: Na casuística do presente estudo, a presença do valgo dinâmico de joelho/lateralidade não se mostrou um fator que pode influenciar no desempenho físico, particularmente da potência muscular de membros inferiores avaliada através de testes de salto horizontal, de atletas jovens de voleibol.
Study on the Performance Evaluation of Expatriate Technician in Multinational Corporations
Authors: Cui Rixiao , Wang Juanru , Zhang Yu 
Published: December 2019

Abstract
Performance evaluation of expatriate technicians is an important way for multinational corporations to effectively manage their expatriate technicians, which is crucial to the technological innovation of multinational corporations. This paper designs the performance evaluation index system of expatriate technicians, which includes work efficiency, professional competence, work attitude, and personal traits. Then, based on the C-POWA operator, the evaluation method of expatriate technicians is put forward. Lastly, using the index and method of evaluation of expatriate technician, four expatriate technicians’ performance are evaluated, and the results reveal that the index and method we put forward are scientific and practical.
An Extended Grey Model GM(1, 1, exp(bk)) and Its Application in Chinese Civil Air Passenger Volume Prediction
Authors: Cheng Maolin , Shi Guojun , Han Yun 
Published: December 2019

Abstract
In grey models, GM(1, 1) is an important prediction model. The grey model GM(1, 1) has good prediction results in the case original data change exponentially at a low speed. However in practical cases sometimes, original data show exponential changes or approximately exponential changes change at a high speed. In these cases, the grey model GM(1, 1) has poor prediction results because the data fail to meet the laws of traditional model. Therefore, the paper proposes an extended grey model GM(1, 1, ebk) and its modeling method. In the final section, the paper builds grey models of GM(1, 1, ebk) for a practical problem and the results show the grey model proposed has greatly improved simulation and prediction accuracy compared with the traditional model.
Landslide Susceptibility Mapping in the Commune of Oudka, Taounate Province, North Morocco: A Comparative Analysis of Logistic Regression, Multivariate Adaptive Regression Spline, and Artificial Neural Network Models
Authors: Benchelha Said , Aoudjehane Hasnaa Chennaoui , Hakdaoui Mustapha , El Hamdouni Rachid , Mansouri Hamou , Benchelha Taoufik , Layelmam Mohammed , Alaoui Mustapha 
Published: December 2019

ABSTRACTLandslide susceptibility indices were calculated and landslide susceptibility maps were generated for the Oudka, Morocco, study area using a geographic information system. The spatial database included current landslide location, topography, soil, hydrology, and lithology, and the eight factors related to landslides (elevation, slope, aspect, distance to streams, distance to roads, distance to faults, lithology, and Normalized Difference Vegetation Index [NDVI]) were calculated or extracted. Logistic regression (LR), multivariate adaptive regression spline (MARSpline), and Artificial Neural Networks (ANN) were the methods used in this study to generate landslide susceptibility indices. Before the calculation, the study area was randomly divided into two parts, the first for the establishment of the model and the second for its validation. The results of the landslide susceptibility analysis were verified using success and prediction rates. The MARSpline model gave a higher success rate (AUC (Area Under The Curve) = 0.963) and prediction rate (AUC = 0.951) than the LR model (AUC = 0.918 and AUC = 0.901) and the ANN model (AUC = 0.886 and AUC = 0.877). These results indicate that the MARSpline model is the best model for determining landslide susceptibility in the study area.
Antibiotics prescription for febrile patients: associated factors in a health facility-based survey in the Greater Accra region of Ghana
Authors: Opoku Michael Mireku , Bonful Harriet Affran , Koram Kwadwo Ansah 
Published: December 2019

Abstract
Introduction: Frequent and/or misguided prescription of antibiotics are important facilitators of the emergence and spread of antibiotic resistance. In the absence of the implementation of effective interventions to control antibiotic use, its consumption may increase out of proportion to requirements. Antibiotic stewardship interventions must be appropriately targeted and assessed to enhance the proper use of antibiotics. The objective of this study was to determine the factors associated with of antibiotics prescription to febrile patients who seek care in health facilities within the Greater Accra region of Ghana. Methods: Secondary data obtained from a review of medical records of 2,519 febrile patients at the outpatient department of 6 health facilities in 3 municipalities during the baseline survey of a quasi-experiment in 2016 were used. The primary outcome was prescription of any antibiotic. Independent variables included patients’ demographics, symptoms, laboratory investigations (blood film microscopy, malaria rapid diagnostic test, full blood count, urine and stool routine examinations), diagnoses, and prescribers’ demographics. Crude and adjusted logistic regression analyses were used to determine the factors associated with antibiotics prescription. Results: The prevalence of antibiotics prescription was 70.1% (95% CI: 67.7-72.4). Prescribers with more years of practice (>5years) were more likely to prescribe antibiotics compared to those with less than 3 years of practice (p < 0.001). Integrated Management of Neonatal and Childhood Illnesses (IMNCI) training was associated with a 2.3 (95% CI: 1.54, 3.53, p < 0.001) times higher odds of antibiotic prescribing. Patients aged 5 years or more were 60% less likely to be prescribed antibiotics compared with those under 5 years (AOR=0.40, 95% CI: 0.32, 0.51; p<0.001). Patients referred for laboratory investigations were 29% less likely to be prescribed with antibiotics than those not referred. Presenting to the outpatient clinic with cough was associated with a 3.5 (95% CI: 2.54, 4.92) times higher odds of antibiotics prescribing. Conclusion: Prescription of antibiotics to febrile patients was high. Promoting laboratory testing can potentially reduce irrational antibiotics prescribing. Prescribing antibiotics for children under five and the prescribing practices of prescribers with longer years of practice should be targeted with interventions to reduce high use of antibiotics.
Comparison between Natural Drainage Group and Negative Drainage Group after Cervical Laminoplasty: A retrospective STROBE-compliant cohort study
Authors: Guan Fulin , Yin Hongna , Zhu Lin , Zhang Zhizhuang , Gao Qichang , Shao Tuo , Tang Weilong , Guan Guofa , Chen Ming , Chi Zhiyong , Gu Jiaao , Yu Zhange 
Published: December 2019

Abstract
The authors have withdrawn this preprint from Research Square
Tuberculosis treatment results in Western Iran over the past 13 years
Authors: Soofi Moslem , moradi atefeh , Riyahi Parisa , Rezaei Sholeh , Shakiba Ebrahim , Moradinazar Mehdi 
Published: December 2019

Abstract
Background: Tuberculosis is one of Iran's most significant infectious diseases, which with the advent of new and chronic diseases, is still known as the most threatening disease of human community. The goal of this research was to assess the result of TB treatment in western Iran (province of Kermanshah) and its associated factors during 2005 to 2017.
Methods: In this cross-sectional study, all patients who had tuberculosis from 2005 to the end of 2017 were evaluated. Treatment outcomes were categorized into four domains of “treatment completion," “death," “treatment failure," and “recoveries" based on national guidelines, and factors affecting outcome were identified using univariate and multivariate logistic regression.
Results: Tuberculosis incidence was 15.21 in males and 14.32 in females per 100,000 individuals. The therapy result was almost uniform during the years investigated. 32.2% had extra pulmonary TB; 58.7% completed treatment; 9.9% died, and 4.1% had treatment failure. After controlling for key factors, the odds of completion of therapy in females were 1.1 (1.0-1.3) times greater than in males, and therapy failure and mortality caused by tuberculosis were also smaller in females than in males 0.6(0.4-0.8) and 0.5(0.3-0.7) respectively). HIV was the greatest variable in the prevalence of tuberculosis with 9.5 (5.8–16.8) times greater chances of death in HIV-positive people than those without HIV.
Conclusion: Given the high prevalence of pulmonary tuberculosis and public health concerns, early screening and infection diagnosis, education and protective measures are suggested to prevent tuberculosis patients.
Keywords: Epidemiology, Tuberculosis, Tuberculosis treatment results, Iran.
Serum HGF ,PCIII and PLT are Noninvasive Markers for the diagnosis of nonalcoholic fatty liver disease
Authors: An Xiuqin , Liu Jinchun , Zheng Xiaojuan , Dou Zhangfeng , Li Yue , Suo Yuhong , Ma Ya Nan , Sun Meiqing , Tian Zhong Yuan , Xu Lijun 
Published: December 2019

Abstract
Background/Aims: It was suggested that serum HGF,PCIII and PLT play important roles in nonalcoholic fatty liver disease (NAFLD). Thus, we aimed to evaluate their clinical utility in the diagnosis of patients with suspected NAFLD.Methods:300 Patients with NAFLD were compared to 102 matched controls.All were subjected to history taking, anthropometric measurements, and abdominal ultrasonography, as well as laboratory assessments of liver functions, fasting lipid profile, GLU, serum PLT, HGF and PCIII.Results:The levels of HGF,PCIII and PLT were higher in NAFLD cases than controls ,and with progressive increases as the severity of fatty liver increased（P<0.05）.HGF,PCIII and PLT were correlated with various clinical parameters and severity of NAFLD（P<0.05）.The optimal cut-off values for HGF in diagnosis of mild, moderate and severe fatty liver were 14.1pg/ml(AUROC 0.753,P＝0.004), 15.4pg/ml(AUROC 0.836, P < 0.001), 17.7pg/ml(AUROC 0.903, P < 0.001). PCIII had no value in differentiate mild from moderate fatty liver ,but its ability to diagnose severe fatty liver was significant. A cut-off value for PCIII to diagnose severe fatty liver was 7.9ng/L(AUROC 0.773).The optimal cut-off values for PLT in the diagnosis of mild, moderate and severe fatty liver were 194×10^9/L(AUROC 0.732), 195×10^9/L(AUROC 0.765), 200×10^9/L(AUROC 0.925), respectively with P < 0.001. When three indicators were tested together,the AUROC(95%CI)curve for diagnose NAFLD was 0.881(sensitivity0.760,specificity 0.873)(P<0.001) .Conclusion:.Combined detection of serum HGF, PCIII and PLT may be an effective non-invasive method for diagnosing NAFLD.
Serum soluble ST2 is a predictor for poor long-term prognosis after transient ischemic attack and ischemic stroke: a cohort study
Authors: Tian Xuan , Guo Yinan , Wang Xiao , Pei Lulu , Wang Xin , Wu Jun , Sun Shilei , Li Yusheng , Ning Mingming , Buonanno Ferdinando S. , Xu Yuming , Song Bo 
Published: December 2019

Abstract
Background: Soluble ST2 (sST2) is a novel inflammation marker for the prediction of adverse outcomes in patients with cardiovascular disease and diabetes mellitus. The aim of the present study was to examine the predictive value of serum sST2 for prognostic outcomes in patients with transient ischemic attack (TIA)/ischemic stroke.Methods: Patients within 24 h after symptom onset were prospectively enrolled based on the TIA/ischemic stroke database of the First Affiliated Hospital of Zhengzhou University. The 1-year prognostic outcomes were composite adverse events (including ischemic and hemorrhagic stroke, myocardial infarction, and all-cause death) and a combination of major disability and death [modified Rankin Scale (mRS), 3-6]. Cox proportional hazard and logistic regression models were used to evaluate the association between serum sST2 and TIA/ischemic stroke prognosis. The C statistic, net reclassiﬁcation index (NRI), and integrated discrimination index (IDI) were used to present improvement in risk classification.Results: Serum sST2 levels were positively correlated with National Institutes of Health Stroke Scale (NIHSS) scores. Kaplan-Meier analysis indicated a significantly different risk in composite adverse events between patients with higher and those with lower levels of sST2 ( P =0.006). Serum sST2 was an independent predictor for composite adverse events (HR: 2.517, 95% CI: 1.279-4.956, P =0.008) and major disability or death (OR: 3.126, 95% CI: 1.452-6.728, P =0.004) after multivariate adjustment. The addition of the sST2 to the NIHSS score significantly improved the predictive value for prognostic outcomes in patients with TIA/ischemic stroke (C statistic: 0.021, IDI: 1.91%, P =0.042 for composite adverse events; NRI: 32.82%, P =0.042 for major disability or death).Conclusions: Serum sST2 levels were positively associated with the severity of TIA/ischemic stroke and could independently predict composite adverse events and major disability or death, indicating that sST2 may be a potential prognostic marker for TIA/ischemic stroke.