bluuebunny/crossref_metadata_2025_split huggingface dataset:
Percezione di bulli e di vittime nella scuola dell'obbligo: un confronto fra insegnanti delle elementari e delle medie
Authors: Epifani Graziana , Serino Carmencita , Scelsi Stefania 
Published: June 2021

- Bullying is a widespread social phenomenon involving both individual and group variables. Few researches have explicitly evaluated how this phenomenon is perceived among teachers. The present study is aimed at analyzing and comparing elementary and middle school teachers' perception of bullying. Perceived problems among children/adolescents in the classroom, perceived peer'attitudes toward bullies, perceived victim' attitudes and perceived seriousness of bullying situations were assessed using a questionnaire completed by 81 teachers. Results highlighted differences in perceived seriousness of phenomenon across two di¬ferent conditions (elementary and middle school teachers). Specifically, middle school teachers perceived bullying situations more serious than elementary school teachers. Theoretical and practical implications of these results are discussed in terms of directions for future research and intervention in bullying.Keywords: Bullying, Teachers, School Communities
The trophic transfer of Cd and Pb from navicula pelliculosa (Bacillariophyta) to Hyalella azteca (Amphipoda)
Authors: Stewart Jennifer L 
Published: June 2021

Currently, information identifying the importance of food and water in the trophic transfer of metals for most aquatic organisms is limited, yet such information is essential for modeling metal movement within food webs. Hyalella azteca is a suitable organism to study the trophic transfer of metals since they represent a major, but potentially vulnerable component of the food web of many lakes. Since studies involving the trophic transfer are limited, the objective of this research was to determine the relative importance of food and water sources of Pb and Cd to these animals.

Hyalella azteca browses on the film of microscopic plants, animals and organic debris covering leaves, stems and other substrates. Hyalella azteca are epibenthic freshwater organisms that prefer foods high in protein. A major challenge of this study involved determining a substrate in which algae would grow and stay attached so Hyalella azteca could graze. Preliminary studies found that the diatom species, Navicula pelliculosa grew and adhered well to Teflon ® surfaces and that Hyalella azteca grazed the diatoms from the surface of Teflon ® . Thus, Navicula pelliculosa was grown in the presence of Pb and Cd concentrations and then fed to the organisms. No significant difference was found between organisms exposed to Pb and Cd from water and from water and food, indicating that Pb and Cd bioaccumulation from food is negligible when the dissolved inorganic fractions are buffered with ethylenediamine tetra-acetic acid (EDTA).

The average log 10 bioconcentration factor (BCF) for Cd was calculated to be 5.25 from water exposure and 5.49 from water and food

exposure. The log 10	Hyalella BCF for Pb was calculated as 4.62 from water exposure

and 4.59 from water and food exposure. From these results, it can be concluded

that a food source containing Pb and Cd concentrations of 15 nM Pb and 0.37

nM Cd, had no noticeable effect on metal burdens to Hyalella azteca. Metal

uptake by Hyalella azteca at the levels studied was found to be primarily from

the dissolved phase.
An Exact Solution of the Reaction-Diffusion Equation for the Speed of the Interface Propagation in Superconductors
Authors: Panna Neelufar 
Published: June 2021

The speed of interface propagation in superconductors for the scalar reaction-diffusion equation ut = ∇2u+ F(u) is studied in detail. Here the non linear reaction term F (u) is the time-dependent Ginzburg-Landau or TDGL equation F(u)=u-u3 which describes the dynamics of the order-disorder transition. In contrast to what has been done in previous work [1] here an improved exact solution has derived by using TDGL equation to determine the speed of the front propagation. The analytical treatment of this study has been found in good agreement with the numerical simulation of V. Mendez et al. [2] and Di Bartolo and Dorsey [3].
The Chittagong Univ. J. Sci. 40(1) : 85-95, 2019
UNIVERSIDAD, COMUNICACION Y FE
Authors: Luna-Tobar+ Luis Alberto 
Published: June 2021

La publicación de una revista universitaria conjuga términos cargados de significado y trascendencia. Se deben encontrar en esa revista la misión social de las comunicaciones en el compromiso comunitario de una auténtica universidad. La conjugación de valores tan exigentes no puede realizarse sino en clima de mucha sinceridad. Si a estos términos sustantivos se les adjunta la determinante específica de nuestra universidad, su cualidad de católica y pontificia, nos encontramos frente a un propósito difícil, cuya ejecución exige valentía académica y decisión científica. Si sea posible pedirles lo primero a las academias y si es posible admirar una ciencia que no sea decidida, es asunto que lo clarifica la historia y la historia es la síntesis viva de todo magisterio y toda ciencia entroncada con la existencia. Solamente falta sinceridad en el análisis de lo vivido para aceptar estas realidades indiscutibles.La Pontificia Universidad Católica del Ecuador, Sede en Cuenca, me ha pedido una introducción para el primer número de su revista académica y encuentro que debo asumir este compromiso desarrollando en síntesis el pensamiento de la Iglesia católica sobre los valores anteriormente enunciados, en cuanto se reflejan y viven en una auténtica universidad: la antropología y la teología de la comunicación y de la educación -que es la más noble suerte de comunicación-, en cuanto se realizan en un claustro universitario.
When age matters: boys with Duchenne muscular dystrophy have growth delay and a fat mass accumulation, as they get older
Authors: Cunha Thais Alves , Grilo Evellyn Câmara , Costa Ádila Danielly de Souza , Vermeulen-Serpa Karina Marques , Leite-Lais Lúcia , Dourado-Júnior Mário Emílio Teixeira , Vale Sancha Helena de Lima , Brandão-Neto José 
Published: June 2021

Anthropometry and body composition evaluation in boys with Duchenne muscular dystrophy (DMD) are challenging, but crucial methods to evaluate the nutritional status, and better anthropometric reference values and body composition predictive equations are needed for this population. Based on these aspects, this study aimed to investigate the hypothesis that changes in anthropometric parameters and body composition of boys with DMD occur according to age. A cross-sectional study with 49 individuals diagnosed with DMD at the neurological outpatient facility at the Onofre Lopes University Hospital in Natal, Brazil, was performed between September 2016 and March 2019. These individuals underwent anthropometric and body composition evaluation. According to age, the participants were divided into four groups: G1 (2.6 - 8.2y), G2 (8.5 - 10.8y), G3 (11.0 - 14.0y), and G4 (15.9 - 23.0y). The parameters weight-for-age (W/A) (p=0.025), tricipital skinfold (TSF) (p=0.027), adductor pollicis muscle (p=0.041), and corrected arm muscle area (cAMA) (p=0.005) were different among the groups. Regarding anthropometric parameters, was prevalence in the categories of appropriate W/A and a height-for-age (H/A), and eutrophy for body mass index-for-age (BMI/A). For the TSF, there was a higher frequency of severe malnutrition or obesity. The cAMA indicated severe malnutrition in most individuals. As for %FM, high adiposity was more frequent, increasing over age groups (G1 to G4). The boys with DMD presented different patterns of anthropometric and body composition parameters. An increase of fat mass and a decrease of lean mass with age/disease progression were observed.
APLIKASI RANCANG BANGUN SISTEM INFORMASI ALUMNI PERGURUAN TINGGI DI KOTA JAYAPURA BERBASIS WEB (STUDI KASUS STMIK UMEL MANDIRI)
Authors: Banyal Nur Ain , Angriani Liza , Surianti Surianti 
Published: June 2021

Abtrak Sistem Informasi Alumni merupakan salah satu sistem informasi yang dirancang untuk dapat membantu suatu pekerjaan dari suatu instansi pendidikan khususnya diperguruan tinggi dalam memperoleh data alumni sehingga dapat memberikan data tersebut secara lengkap lewat tersedianya layanan informasi berbasis web. Alumni juga memiliki peranan penting untuk pengembangan institusi pendidikan. Karena alumni bisa berperan sebagai cermin kualitas sebuah institusi pendidikan. Dengan adanya informasi tentang alumni yang baik secara tidak langsung dapat meningkatkan citra baik perguruan tinggi terhadap masyarakat umum. Sampai saat ini masih banyak perguruan tinggi yang belum memanfaatkan penggunaan sistem dalam pendataan dan penelusuran alumni, yang diharapakan mempermudah dalam hal pengolahan data alumni tersebut, selain itu dengan sistem informasi dapat memfasilitasi berbagai keperluan tambahan seperti penelusuran alumni, berita dan informasi kegiatan lowongan kerja. STMIK Umel Mandiri dalam mendata alumninya masih manual dimana alumni hanya mengisi form yang diberikan kepada mahasiswa,Untuk mempermudah pendataan alumni STMIK Umel Mandiri, diperlukan suatu sistem informasi yang dapat menginformasikan data alumni. Agar mendapatkan informasi yang akurat dan mudah dalam pengaksesan datanya, oleh karena itu judul penelitian ini adalah “Aplikasi Rancang Bangun Sistem Informasi Alumni Perguruan Tinggi Di Kota Jayapura Berbasis Web”. Metode yang digunakan dalam penelitian ini adalah deskriptif dengan melakukan observasi dan survei. Alat yang digunakan adalah Flowchard dan DFD. Dengan database yang digunakan yaitu PHP dan MySQL. Pengujian system dilakukan dengan menggunakan metode Black Box, dari hasil analisis input data bahwa proses input data berjalan lancar kecuali terjadi kesalahan kode yang nanti akan membuat sistem memunculkan pesan error.
PENINGKATAN PELAYANAN JASA KONSULTAN LINGKUNGAN HIDUP DENGAN PENGEMBANGAN WEBSITE CV FAHMI JAYA
Authors: Yulindawati Yulindawati , Arfyanti Ita 
Published: June 2021

Research on the improvement of environmental consulting services with the development of the CV website. Fahmi Jaya is a research to make it easier for the public to obtain complete and up-to-date information because information is felt to be very important in making decisions and in achieving goals. In addition to obtaining complete and up-to-date information, the website can also send and publish information to the wider community online. The system development method used in this research is the System Development Life Cycle (SDLC) method, or better known as the system development life cycle in system engineering and software engineering, is the process of making and changing systems and the models and methodologies used to develop these systems. The results of the research are expected that this system can publish its activities for more recent information so that the public can find out the activities that have been carried out, the ease of information about CV FAHMI JAYA.
Risk Stratification for Atrial Fibrillation and Outcomes in Tachycardia-Bradycardia Syndrome: Ablation vs. Pacing
Authors: Zhang Rongfeng , Wang Yue , Yang Minghui , Yang Yiheng , Wang Zhengyan , Yin Xiaomeng , Dong Yingxue , Yu Xiaohong , Xiao Xianjie , Gao Lianjun , Xia Yunlong 
Published: June 2021

Background: Catheter ablation of atrial fibrillation is an alternative treatment for patients with tachycardia-bradycardia syndrome (TBS) to avoid pacemaker implantation. The risk stratification for atrial fibrillation and outcomes between ablation and pacing has not been fully evaluated.Methods: This retrospective study involved 306 TBS patients, including 141 patients who received catheter ablation (Ablation group, age: 62.2 ± 9.0 months, mean longest pauses: 5.2 ± 2.2 s) and 165 patients who received pacemaker implement (Pacing group, age: 62.3 ± 9.1 months, mean longest pauses: 6.0 ± 2.3 s). The primary endpoint was a composite of call cause mortality, cardiovascular-related hospitalization or thrombosis events (stroke, or peripheral thrombosis). The second endpoint was progress of atrial fibrillation and heart failure.Results: After a median follow-up of 75.4 months, the primary endpoint occurred in significantly higher patients in the pacing group than in the ablation group (59.4 vs.15.6%, OR 6.05, 95% CI: 3.73–9.80, P &lt; 0.001). None of deaths was occurred in ablation group, and 1 death occurred due to cancer. Cardiovascular-related hospitalization occurred in 50.9% of the pacing group compared with 14.2% in the ablation group (OR: 4.87, 95% CI: 2.99–7.95, P &lt; 0.001). More thrombosis events occurred in the pacing group than in the ablation group (12.7 vs. 2.1%, OR 6.06, 95% CI: 1.81–20.35, P = 0.004). Significant more patients progressed to persistent atrial fibrillation in pacing group than in ablation group (23.6 vs. 2.1%, P &lt; 0.001). The NYHA classification of the pacing group was significantly higher than that of the ablation group (2.11 ± 0.83 vs. 1.50 ± 0.74, P &lt; 0.001). The proportion of antiarrhythmic drugs and anticoagulants used in the pacing group was significantly higher than that in the ablation group (41.2 vs. 7.1%, P &lt; 0.001; 16.4 vs. 2.1%, P = 0.009).Conclusion: Catheter ablation for patients with TBS was associated with a significantly lower rate of a composite end point of cardiovascular related hospitalization and thromboembolic events. Furthermore, catheter ablation reduced the progression of atrial fibrillation and heart failure.
Spatio-Temporal Distribution of Supra-Glacial Ponds and Ice Cliffs on Verde Glacier, Chile
Authors: Loriaux Thomas , Ruiz Lucas 
Published: June 2021

Known for their important role in locally enhancing surface melt, supraglacial ponds and ice cliffs are common features on debris-covered glaciers. We use high resolution satellite imagery to describe pond-cliff systems and surface velocity on Verde debris-covered glacier, Monte Tronador, and Southern Chile. Ponds and ice cliffs represent up to 0.4 and 2.7% of the glacier debris-covered area, respectively. Through the analyzed period and the available data, we found a seasonality in the number of detected ponds, with larger number of ponds at the beginning of the ablation season and less at the end of it. Using feature tracking, we determined glacier surface velocity, finding values up to 55 m/yr on the upper part of the debris-covered area, and decreasing almost to stagnation in the terminus. We found that larger ponds develop in glacier zones of low velocity, while zones of high velocity only contain smaller features. Meanwhile, ice cliffs appeared to be less controlled by surface velocity and gradient. Persistent ice cliffs were detected between 2009 and 2019 and backwasting up to 24 m/yr was measured, highlighting significant local glacier wastage.
Macular Vessel Density Changes in Young Adults With High Myopia: A Longitudinal Study
Authors: Shi Ya , Ye Luyao , Chen Qiuying , Hu Guangyi , Yin Yao , Fan Ying , Zhu Jianfeng , He Jiangnan , Zheng Zhi , Zou Haidong , Xu Xun 
Published: June 2021

Background: To characterize the longitudinal changes of macular vessel density in young adults and its associated factors.Methods: The right eyes of 309 participants (75 high myopic, 194 mild-to-moderate myopic, and 40 healthy) were followed up for 21 months. OCTA images were acquired at two visits using follow-up scans. Macular vessel density was calculated globally and in the nine early treatment diabetic retinopathy study (ETDRS) subfields of the macula superficial layer.Results: The macular vessel density significantly decreased in young myopes after a 21-month follow up (p &lt; 0.05), with variations among sectors. Compared with healthy eyes, HM group exhibited a faster reduction in global macular vessel density (p = 0.0307) as well as in sectors of inner-inferior (II), inner-temporal (IT), and outer-temporal (OT) (all p &lt; 0.05). Multivariate regression analysis showed that longer baseline axial length (AL) was significantly associated with larger reduction of macular vessel density in the inner-inferior, inner-temporal and outer-temporal sectors (all p &lt; 0.05).Conclusions: Compared with emmetropes, high myopes presented greater loss of macular vessel density over time in global and in the inner-inferior, inner-temporal and outer-temporal sectors. A longer baseline AL was associated with larger changes of macular vessel density in the inner-inferior, inner-temporal and outer-temporal sectors.
Radiological Configuration of the Vestibular Aqueduct Predicts Bilateral Progression in Meniere's Disease
Authors: Bächinger David , Schuknecht Bernhard , Dlugaiczyk Julia , Eckhard Andreas H. 
Published: June 2021

Objective: Meniere's disease (MD) progresses from unilateral to bilateral disease in up to 50% of patients, often chronically and severely impairing balance and hearing functions. According to previous studies, 91% of bilateral MD patients demonstrate bilateral hypoplasia of the endolymphatic sac (ES) upon histological and radiological examination of their inner ears. Here, we seek to validate a radiological marker for ES hypoplasia that predicts the risk for future progression to bilateral MD in individual patients.Methods: Patients with unilateral MD and radiological evidence for ES hypoplasia in either the clinically affected inner ear (cohort MDuni-hpuni) or both inner ears (cohort MDuni-hpbi) were included. Given our hypothesis that ES hypoplasia critically predisposes the inner ear to MD, we expected progression to bilateral MD only in the MDuni-hpbi cohort. To investigate eventual progression to bilateral MD, clinical, audiometric, and imaging data were retrospectively collected over follow-up periods of up to 31 years.Results: A total of 44 patients were included in the MD-hpuni (n = 15) and MDuni-hpbi (n = 29) cohorts. In line with our radiology-based predictions, none (0/15) of the MD-hpuni patients exhibited progression to bilateral MD, whereas 20/29 (69%) MD-hpbi patients have already progressed to bilateral MD. Using the Kaplan–Meier estimator, bilateral disease progression would be observed in 100% of MD-hpbi patients 31 years after the initial diagnosis with an estimated median time to bilateral progression of 12 years. The nine MD-hpbi patients who, so far, remained with unilateral disease demonstrated a median time since initial (unilateral) MD diagnosis of only 6 years and are thus still expected to progress to bilateral disease.Conclusion: Progression to bilateral MD adheres to predictions based on the radiological presence or absence of ES hypoplasia. This prognostic tool, if validated by prospective long-term studies, will provide clinically relevant information about a patient's future disease burden and will help to select more personalized treatment regimens.
Clinical Characteristics and Long-Term Prognosis of Anti-LGI1 Encephalitis: A Single-Center Cohort Study in Beijing, China
Authors: Li Tao-Ran , Zhang Yu-Di , Wang Qun , Shao Xiao-Qiu , Lyu Di-Yang , Lv Rui-Juan 
Published: June 2021

Background: This study aimed to analyze the clinical characteristics of anti-leucine-rich glioma-inactivated protein 1 (LGI1) encephalitis patients and investigate prognostic factors by using a large-sample and long-term follow-up cohort.Methods: The clinical data of 45 patients (29 males; mean age, 57.0 years) from May 2014 to August 2019 were collected. All patients were followed up by face-to-face interviews in the third month after discharge and then by telephone and/or face-to-face interviews every 6 months until November 2020. We evaluated each patient's response to the initial treatments at the first interview and divided them into “responders” and “nonresponders.” Relapses were recorded. At the end of follow-up, each patient was evaluated and reclassified into “complete recovery” or “unhealed” groups. Intergroup differences were assessed.Results: All patients presented with seizures at the initial consultation. Other common manifestations included cognitive dysfunction (82.2%), psychiatric disturbance (66.7%), sleep disorder (54.5%), and hyponatremia (66.7%). During the follow-up period (32.8 ± 13.5 months), six patients experienced relapse within 6–37 months. We observed that the patients who did not respond to the initial treatments and those who relapsed all had a poor long-term prognosis. The patients in the “unhealed” group were older (p = 0.009), had a lower incidence of generalized tonic–clonic seizures (p = 0.041), and had a higher probability of cerebrospinal fluid (CSF) abnormalities (p = 0.024) than those in the “complete recovery” group.Conclusion: Anti-LGI1 encephalitis was characterized by seizures, cognitive impairment, psychiatric disturbance, and sleep disorders and was often accompanied by hyponatremia. Patients who responded poorly to the initial treatments and those patients who relapsed had dismal long-term prognoses. Advanced age and CSF abnormalities may be risk factors for poor prognosis, but these still need to be verified.
Cardia Gastric Cancer Is Associated With Increased PIK3CA Amplifications and HER2 Expression Than Noncardia Gastric Cancer According to Lauren Classification
Authors: Pai Shih-Min , Huang Kuo-Hung , Chen Ming-Huang , Fang Wen-Liang , Chao Yee , Lo Su-Shun , Li Anna Fen-Yau , Wu Chew-Wun , Shyr Yi-Ming 
Published: June 2021

BackgroundTo date, few reports have investigated genetic alterations and clinicopathological features in cardia and noncardia gastric cancer (GC).MethodsIn total, 435 GC patients receiving curative surgery were included. The clinicopathological features, recurrence patterns, prognoses and genetic alterations were compared between cardia and noncardia GC patients.ResultsAmong the 435 enrolled patients, 47 (10.8%) had cardia GC. Compared with noncardia GC, cardia GC was associated with more intestinal-type tumors and similar initial recurrence patterns and 5-year overall survival (OS; 50.8% vs. 50.5%, P = 0.480) and disease-free survival (DFS; 48.6% vs. 48.9%, P = 0.392) rates. For both intestinal-type GC and diffuse-type GC, the clinicopathological features and 5-year OS and DFS rates were not significantly different between the cardia and noncardia GC patients. Multivariable analysis showed that cardia GC was not an independent prognostic factor. Compared with noncardia GC, cardia GC was associated with increased PIK3CA amplification than in patients with intestinal-type GC and was associated with increased HER2 expression in patients with diffuse-type GC.ConclusionsCardia GC is not an independent prognostic factor. In cardia GC patients with intestinal-type GC, PIK3CA amplification was more common, and in those with diffuse-type GC, HER2 expression was more common. Targeted therapy may be beneficial for these patient subgroups.