bluuebunny/crossref_metadata_2025 huggingface dataset:
Scaffolded Self-Explanation with Visual Representations Promotes Efficient Learning in Early Algebra
Authors: Nagashima Tomohiro , Bartel Anna N. , Tseng Stephanie , Vest Nicholas Allan , Silla Elena M , Alibali Martha W. , Aleven Vincent
Published: May 2021

Although visual representations are generally beneficial for learners, past research also suggests that often only a subset of learners benefits from visual representations. In this work, we designed and evaluated anticipatory diagrammatic self- explanation, a novel form of instructional scaffolding in which visual representations are used to guide learners’ inference generation as they solve algebra problems in an Intelligent Tutoring System. We conducted a classroom experiment with 84 students in grades 5-8 in the US to investigate the effectiveness of anticipatory diagrammatic self-explanation on algebra performance and learning. The results show that anticipatory diagrammatic self-explanation benefits learners on problem-solving performance and the acquisition of formal problem-solving strategies. These effects mostly did not depend on students’ prior knowledge. We analyze and discuss how performance with the visual representation may have influenced the enhanced problem-solving performance. Published version available: https://escholarship.org/uc/item/17q6g4db
Gợi ý nâng cao trải nghiệm du khách với du lịch thông minh
Authors: Giao Ha Nam Khanh
Published: May 2021

Sự bùng nổ của du lịch đòi hỏi các điểm đến cần xác định lại vai trò của mình trong quá trình đồng tạo ra giá trị.. Điểm đến du lịch thông minh (Smart tourism destination- STD) được xem là một giải pháp hiệu quả nhằm nâng cao trải nghiệm du khách và nâng cao sự hài lòng du khách. Tuy vậy, đưa tính thông minh vào du lịch đòi hỏi sự tương tác năng động giữa các bên liên quan trong hệ thống du lịch sinh thái. Bài viết nhằm giải thích du lịch thông minh, và cung cấp sự thấu hiểu cho các nhà quản lý điểm đến và cho các nhà lập chính sách về cách thức mà họ có thể sử dụng các công nghệ sang tạo trong các STD nhằm cải thiện kinh nghiệm đồng tạo ra giá trị.
Differential expression of ankyrin 2 in cancers of the breast.
Authors: Mamoor Shahan
Published: May 2021

Breast cancer affects women at relatively high frequency (1). We mined published microarray datasets (2, 3) to determine in an unbiased fashion and at the systems level genes most differentially expressed in the primary tumors of patients with breast cancer. We report here significant differential expression of the gene encoding ankyrin 2, ANK2, when comparing primary tumors of the breast to the tissue of origin, the normal breast. ANK2 mRNA was present at significantly lower quantities in tumors of the breast as compared to normal breast tissue. Analysis of human survival data revealed that expression of ANK2 in primary tumors of the breast was correlated with recurrence-free survival in patients with basal, luminal A, or luminal B subtype cancer, demonstrating a relationship between primary tumor expression of a differentially expressed gene and patient survival outcomes influenced by molecular subtype. ANK2 may be of relevance to initiation, maintenance or progression of cancers of the female breast.
Modeling Considerations for Quantitative Social Science Research Using Social Media Data
Authors: Budak Ceren , Soroka Stuart , Singh Lisa , Bailey Michael , Bode Leticia , Chawla Nitesh , Davis-Kean Pamela , De Choudhury Munmun , De Veaux Richard , Hahn Ulrike , Jensen J. Bradford , Ladd Jonathan M. , Mneimneh Zeina , Pasek Josh , Raghunathan Trivellore , Ryan Rebecca , Smith Noah A. , Stohr Karen , Traugott Michael
Published: May 2021

In this paper, the fourth in a series of white papers, we provide a summary of the discussions and future directions that came from the topical meeting that focused on model construction with social media data. A particularly interesting aspect of this meeting was, in our view, discussion of the different disciplines’ requirements and approaches to modeling and the different considerations that are used to assess model fit.
When average is over: small N but many trials
Authors: Holcombe Alex O.
Published: May 2021

Rouder & Haaf (2021) provide a valuable recipe for testing whether there are qualitative differences. This should hasten the day when psychologists routine consider individual participant data, rather than just the average of the participants’ data. Work remains to be done, however, on how to approach the issue of individual differences with the small-N, many-trials tradition that dates back to the beginning of experimental psychology and continues today in some areas, particularly cognitive modelling and perception.
Hunt-Vitell’s General Theory of Marketing Ethics Predicts ‘Attitude-Behaviour’ Gap in Pro-Environmental Domain
Authors: Zaikauskaite Laura , Butler Gemma , Helmi Nurul F. S. , Robinson Charlotte L. , Treglown Luke , Tsivrikos Dimitrios , Devlin Joseph
Published: May 2021

The inconsistency between pro-environmental attitudes and behaviour, known as the ‘attitude-behaviour’ gap, is not uncommon to ethical decision-making, however it’s exceptionally pronounced in scenarios associated with ‘green’ choice. Despite existing research offering numerous attempts to investigate the causes of the ‘attitude-behaviour’ gap in the pro-environmental domain, it is surprising that the major factors driving the ‘attitude-behaviour’ gap are still unknown. Therefore, we have grounded this study in Hunt-Vitell’s moral philosophy-based framework of ethical decision-making, which assumes morality as the central force impacting one’s behaviour and tested its effectiveness in predicting pro-environmental intentions vs. behaviours. The results from an online study of 612 MTurk participants from the US revealed that participants’ decision-making indeed depended on deontological and teleological framing of pro-environmental scenarios, and this in turn predicted the declining relationship between intention vs. behaviour. These findings suggest that morality is central to pro-environmental decision-making, and the ‘attitude-behaviour’ gap is the result of the disintegrated effects of moral dimension. For this reason, strengthening the impact of morality could be sufficient for aligning intentions with behaviours and thus closing the ‘attitude-behaviour’ gap.
Practical measurement of changes in leg length discrepancy after a myofascial release on the thoracolumbar fascia in patients with acute low back pain. A pilot study.
Authors: Brandl Andreas , Egner Christoph , Schleip Robert
Published: May 2021

Background: Recent work has examined an association between leg length discrepancy (LLD) and acute low back pain (aLBP). Myofascial release (MFR) techniques are thought to be frequently applied in the treatment of aLBP. The purpose of this study was to evaluate a practical measure of LLD and the feasibility of an MFR technique in a randomised con-trolled trial (RCT).Methodology: In 12 subjects (7 women and 5 men) with aLBP and LLD greater than 3 mm, an MFR technique was per-formed on the thoracolumbar fascia. At the baseline, after the intervention, and at follow-up, LLD was measured using a cross line laser and finger-to-floor distance (FFD), and pain was measured with a visual analogue scale (VAS). Patients com-pleted a questionnaire after follow-up to assess the acceptability of the study procedure. The therapist evaluated the methods in terms of their feasibility.Results: LLD measurement and MFR treatment required little time and few resources. Participants agreed to the study pro-cedure with moderate to high acceptance. The LLD decreased by 5.00 mm after treatment and by 4 mm at follow-up. The VAS showed a reduction in pain of 17.50 mm at follow-up but not immediately after treatment.Conclusion: The measurement of LLD is applicable in daily manual therapy practice, but it cannot be assumed to be a val-id method for an RCT. Validated methods such as video raster stereography are therefore recommended. Comprehensive RCTs to study the effects of MFR intervention on leg length are feasible.
Variation in spirometry parameters in children with and without recurrent respiratory problems
Authors: Gauchan Eva , BK Ganesh , Koirala Deepak Prasad
Published: May 2021

Background: Children having recurrent episodes of respiratory symptoms account for a major source of hospitalization. These children have increased morbidities and if not identified in time can have impaired lung function as adults. 

Objectives: The aim of our study was to compare the spirometry parameters and bronchodilator reversibility in children with and without recurrent respiratory problems.

Methodology: This was a prospective observational study conducted in the Pediatric department of Manipal Teaching Hospital comparing 35 children with recurrent respiratory problems and 35 children with no history of recurrent respiratory problems. After thorough instructions, baseline spirometry was done in all children and recordings were noted. Thereafter they were given two puffs of salbutamol (100 µg) and repeat testing was done 20 minutes later. Bronchodilator reversibility was calculated according to standard formula. Various statistical tests were used to compare the findings between the two groups.

Results: The recurrent respiratory problem group had 31 (88%) cases of bronchial asthma, two (5.7%) bronchiolitis obliterans, one (2.8%) pulmonary eosinophilia, and one (2.8%) common variable immunodeficiency syndrome. The median values of FEV1 (p=<0.001), FVC (p=0.007), FEV1/FVC (p=0.005), PEF (p=0.042) and FEF25-75(p=0.026) were lower in the group with recurrent respiratory problems. Post-bronchodilator reversibility of FEV1 (p=0.001), FVC (p=<0.001) and FEF25-75 (p=0.026) was higher in the groups with recurrent respiratory problems

Conclusion: We found that lung function parameters in children with recurrent respiratory problems show features of obstructive defect. The post-bronchodilator response is higher in the group with recurrent respiratory problems as compared to normal children.
Prevalence and pattern of lipid profile among patients with diabetes mellitus attending a tertiary teaching hospital in Nepal
Authors: Kafle Rita , Kadel Anuj Raj
Published: May 2021

Background: Dyslipidemia, a well-known major risk factor for coronary heart disease, is commonly associated with macro-vascular complications in patients with diabetes mellitus. Increased level of triglycerides and reduced levels of HDL cholesterol are common lipid abnormalities in diabetes.

Objectives: The aim of the study was to study the prevalence and pattern of lipid abnormalities among diabetic patients attending general practice outpatient department in Kathmandu Medical College Teaching Hospital.

Methodology: This is a descriptive cross-sectional study conducted in the Department of General Practice and Emergency of Kathmandu Medical College Teaching Hospital, Duwakot, Bhaktapur. Convenience sampling technique was used.After obtaining informed consent, 120 diabetic patients from January 2020 to March 2020 were included. The data collected was entered in the Statistical Package for the Social Sciences software and analyzed. Ethical clearance was taken from the Institutional Review Committee of Kathmandu Medical College.

 

Results:The average TC, HDL, TG and LDL level among the female participants were 186.18 mg/dl, 41.91 mg/dl, 194.63 mg/dl, 111.88 mg/dl respectively and 186.30 mg/dl, 38.80 mg/dl, 205.60 mg/dl, 125.80 mg/dl among the male participants respectively.Eighty-five (71%) patients had a low HDL level. Total cholesterol was found to be high in 38(32%) participants. LDL cholesterol was high in 77(64%) participants. The triglyceride level was high in 85(71%) participants.

Conclusion: This study showed that some diabetic individuals have a lipid abnormality while others did not. This shines light on the importance of regular testing for lipid profile in diabetic individuals because we cannot reasonably predict when a patient will develop dyslipidemia.
Achieving negative margin in Bismuth III and IV hilar cholangiocarcinoma without major hepatectomy
Authors: Ghimire Roshan , Amatya Kapendra Shekhar , Thapa Prabin Bikram
Published: May 2021

Background: Several studies have proposed en bloc resection with major hepatectomy to achieve negative margin in hilar cholangiocarcinoma. These major hepatectomy have morbidity in some subgroups of patients with limited functional hepatic reserve.

Methodology: Patients with Bismuth type III and IV hilar cholangiocarcinoma with underlying early cirrhosis that underwent liver parenchymal preserving bilobar wedge liver resection between July 2017 to June 2020 were included in the study.

Results:  Twelve patients underwent liver parenchymal preserving bilobar wedge liver resection between July 2017 to June 2020. Mean age of the study population was 70.83±3.58 years. Reconstruction of biliary tree was done with intrahepatic cholangiojejunostomy in Roux en Y fashion in multiple segmental hepatic stomas.

Conclusion: Liver parenchymal preserving surgery should be considered in hilar cholangiocarcinoma in selected cases to prevent suspicion increasing morbidity and mortality due to post-operative liver failure.
The Influence of Teacher Training on the Moodle Platform and ESL Language Learning on Students at a Latin American University
Authors: Mendivil Carrión Nora , Campana Concha Abelardo
Published: May 2021

Objective: To accurately know the influence of teacher training on the Moodle platform and English learning in ESL students at a Latin American university. Materials and Methods: For this pre-experimental study, the pre- and post-tests were applied to a sample of 29 students and then processed with the SPSS (Statistical Analysis Software) program. Results: The pre-test reached an average score of 13.86 compared to the post-test, which reached an average score of 17.83. This indicates a positive influence with an increase of 3.97 points, P =000. Therefore, the hypothesis stating that ESL students are able to learn in a virtual class is accepted. In the four specific hypotheses, increases of 4.00,3.50, 3.74 and 4.20 points between the pre- and post-tests, respectively, verify the improvements. Conclusion: We can conclude that there is a positive influence with the Moodle platform teacher training in the learning of English as a second language. Clear evidence is shown in the increase of 3.97 points between the pre- and post-tests, which indicate an academic progress of the students of a regular average to very good. Objectivo: Conocer la influencia de la capacitación de docentes en la plataforma Moodle y aprendizaje del inglés básico en estudiantes de ingles basico de una universidad. Materiales y Método: Para este estudio pre experimental para ello se aplicó el pre y pos test a una muestra de 29 estudiantes, que será procesada con el programa SPSS. Resultados: El pretest alcanzó un promedio de 13.86, a comparación del postest con un puntaje promedio de 17.83, con ello una influencia positiva con un incremento de 3.97 puntos. P = .000, se acepta la hipótesis planteada. En las hipótesis específicas también se comprobó un incremento de 4.00 , 3.50 , 3.74 y 4.20 puntos, respectivamente. Conclusión: Existe una influencia positiva de la Capacitación docente plataforma Moodle en el aprendizaje del inglés básico, ya que entre la prueba pre y pos test se experimentaron un aumento de 3.97 puntos, lo que permite señalar un progreso académico de los estudiantes de un promedio regular a muy bueno.
Los retos urbanos en Lima. Movilidad y espacios públicos contra la desigualdad
Authors: Kahatt Sharif S.
Published: May 2021

Muchas de aquellas grandes áreas denominadas como “parte de la ciudad”, no han alcanzado las mínimas condiciones para desarrollar un ecosistema sostenible, es decir, carecen de una característica fundamental para la convivencia de sus ciudadanos: la urbanidad. En estas condiciones, es clave identificar los problemas y convertirlos en oportunidades para la transformación y mejora de la ciudad como espacio de convivencia ciudadana. Frente a esta situación, la urbanidad es la clave para alcanzar la equidad social, así como la movilidad, y el espacio público constituye la herramienta infraestructural elemental para trazar el camino al desarrollo igualitario e inclusivo.
La defensa del espacio público
Authors: Montaner Josep Maria , Muxí Zaida
Published: May 2021

Este artículo analiza conceptual e históricamente el significado del espacio público, defendiendo su crecimiento y argumentando los peligros de cuando este se reduce y tiende a desaparecer. Se presentan alternativas de peatonalización y renaturalización, especialmente las aplicadas recientemente en Barcelona y otras ciudades catalanas.
Analysis of Retrieved Hydroxyapatite Coated Orthopaedic Implants
Authors: Gross K.A. , Ben-Nissan B. , Walsh W.R. , Swarts E.
Published: May 2021

Hydroxyapatite (HA) coatings are used to improve the adhesion of bone onto implanted devices. This approach increases the integrity and hence the lifetime of the implant. Several orthopaedic appliances (HA coated and macrotextured) were recovered from patients after revision surgery. The implants were cleaned and sterilised in ethanol or formaldehyde before being photographed and sectioned for analysis. X-ray diffraction indicated that the remaining coating was of high crystallinity. Micro textured areas such as ribbings and fenestrations subjected the coating to different modes of stress which has affected the coating. Adhesive failure was evident on implants attributed to dissolution of the amorphous phase at the interface. Observation of the microstructure with scanning electron microscopy showed that coating degradation begins at the surface where the coating is resorbed and continues along the substrate-coating interface thereby compromising interface strength. The microstructure and the dissolution of retrieved implants are discussed in relation to the general coating features in plasma sprayed HA coatings.
Современные проблемы мотивации трудовой деятельности: учебное пособие, [электронное издание сетевого распространения] / М.А. Малышев. — М.: «КДУ», «Добросвет». — 2021. — 60 с.
Authors: Малышев М.А.
Published: May 2021

Учебное пособие посвящено трудовой мотивации, как важнейшему элементу управления персоналом в современной организации. В учебном пособии используются схемы, которые иллюстрируют рассматриваемые вопросы, а так же табличные формы представления учебного материала. В учебном пособии представлены авторские разработки посвященные проблеме мотивации трудового поведения работников на предприятиях (организациях). Для студентов факультета государственного управления МГУ имени М.В. Ломоносова.
Analysis of shipboard fire/explosion accidents occurred in the Turkish search and rescue area
Authors: Yılmaz Fatih
Published: May 2021

A shipboard fire/explosion may be occurred due to various causal factors such as actions, omissions, events or conditions. In this study, it is aimed to carry out an analysis focused on shipboard fire/explosion casualties. With this aim, the data on 127 shipboard fire/explosion casualties occurred in the Turkish Search and Rescue area, which were reported to the Main Search and Rescue Coordination Center between 2006-2015, have been analyzed. As a result of the statistical analysis (descriptive statistics), it has been observed that majority of the shipboard fire/explosion casualties were occurred on-board the Turkish flagged ships, on-board small passenger vessels/recreational vessels/private-commercial yachts among the classified ship types, in the regions of İstanbul, İzmir and Çanakkale, in the summer season, during the night-time, and in machinery spaces of the ships by described locations. It has been also observed that main events caused shipboard fires/explosion casualties were electricity contact/leakage, gas accumulation/leakage, cargo ignition, welding/hot works and other undescribed factors. Additionally, by examining the existing shipboard fire & explosion accident investigation reports of Transportation Safety Investigation Center between 2014-2020, it has been observed that the main possible causal/contributing factors for the shipboard fire/explosion casualties were related with the violations of the ISM-Safety Management System (SMS) requirements. Many previous studies in the relevant literature point out to the ISM/SMS-related causal/contributing factors as well. In conclusion, special attention should be paid to the effective implementation and continuous improvement of the ISM/SMS procedures related with shipboard fire safety for the prevention of shipboard fire/explosion casualties as well.
Female fish farmers: How technically efficient are they? Evidence from Delta State Nigeria
Authors: Gbigbi Theophilus Miebi
Published: May 2021

The study investigated the technical efficiency of female catfish growers in Delta State, Nigeria. Data have been obtained using questionnaires from 112 female catfish farmers who have been randomly selected. Descriptive statistics, cost and return analysis as well as the stochastic model have been used in the analysis of data. The results showed that the mean age, farming experience and household size of the female fish farmers were 42 years old, 8 years and 6 persons respectively. Most of the participants are married and educated. The gross margin and net farm income were N490,378.46 and N416,242.82k respectively. With a rate of return on investment and a BCR (Benefit Cost Ratio) of 0.64 and 1.64, fish farming was found to be profitable. The Stochastic frontier outcome showed that the size of the pond, fingerlings, feed and water supply had a significant and positive effect on fish production, while the cost of medication had an inverse relationship with fish production. Age, education and household size have been found to increase technical performance, while technical inefficiency is increased by distance from farm location and credit access. The finding further revealed that a female fish farmer had a technical efficiency of 53.5% in the area of study. This is a signal that by implementing the technologies practiced by the best farmers, fish productivity can be improved by about 46.5% by the farmers. The coefficient of elasticity was 0.567, which indicated that the female catfish farmers were in Phase II. The failure of farmers to reach the production frontier may however be due to certain factors, including insufficient funding, high feed costs, water supply and fingerlings shortages. On the basis of the results, female fish farmers should be supported by means of professional training in fish production practices to ensure that their resources are optimally utilized.
Assessing water quality in the Kelebek Stream branch (Gediz River Basin, West Anatolia of Turkey) using physicochemical and macroinvertebrate-based indices
Authors: Ertaş Alperen , Yorulmaz Bülent
Published: May 2021

This study was carried out in Kelebek, which is the most important stream in Gediz River Basin, Turkey, to determine water quality by using macroinvertebrate-based metrics and physicochemial variables. In addition, we also aimed to investigate the effects of anthropogenic pressure and dam construction on stream macroinvertebrates during the study period. In this study, following biotic indices are used: Saprobi Index (SI), Biological Monitoring Working Party (BMWP), Average Score per Taxon (ASPT), Family Biotic Index (FBI), Belgian Biotic Index (BBI), as well as diversity indices: Shannon-Weaver index (SWDI), Simpsons index (SDI) and Margalef index (MDI). Collection of macroinvertebrate samples and the physicochemical measurements were carried out monthly for a year. As a result of the identification, the most dominant macroinverterate group was Insecta. Our results show the presence of 9 taxonomic group in the stream which belong to nine groups: Oligochaeta, Mollusca, Crustacea, Ephemeroptera, Plecoptera, Trichoptera, Odonata, Coleoptera, Diptera. Canonical correlation analysis (CCA) indicates importance of physicochemial variables in the distribution of different macroinvertebrates groups (total variance 88%), species (total variance 86.2%) and biotic indices (total variance 88.2%). The water quality along the Kelebek Stream show variation from good class in station #1, #2 and #5, to moderate in station #3 and #4. We conclude that BMWP (Original), BMWP (Spanish), BMWP (Greek) and ASPT indices are suitable for assessing stream health by macroinvertebrates.
Diabetes through transitions in life; from fit to frail
Authors: Strain William
Published: May 2021

The accelerated ageing that occurs in diabetes results in earlier appearance of the geriatric phenotype, including frailty. Recent guidelines have stressed the need for assessing frailty in the evaluation of older adults living with diabetes. Once evaluated and identified, however, the presence of frailty marks a significant change for the individual. Treatments that have been continued and encouraged often for many years, may be discontinued. Life-prolonging medications such GLP-1 analogues, and SGLT-2 inhibitors are replaced with therapies designed to improve quality of life, reduce glycaemic variability and stabilise the sarcopaenia that characterises frailty, such as insulin. With this, however, comes new problems, such as the risk of hypoglycaemia, the need to for capillary glucose monitoring and sub cutaneous administration. Additionally, new diagnoses that are more common in people in diabetes, such as stroke, heart disease, dementia, falls and fractures will result in further changes, with the need for care and possibly even institutionalisation.
Management of Advanced Medullary Thyroid Carcinoma with Vandetanib: Case Series
Authors: Flórez R Andrés
Published: May 2021

Objective: To describe the tumor response and adverse events in patients with advanced medullary thyroid carcinoma (MTC) treated with vandetanib at the National Cancer Institute in Bogotá, Colombia. Materials and Methods: Case series including five patients with advanced MTC treated with vandetanib from April 2011 to August 2018 and a minimum follow-up of 6 months. Results: 5 patients met the inclusion criteria, including 3 women. The mean age was 49 years. A total of 4 patients underwent total thyroidectomy prior to starting vandetanib. The main indication for vandetanib was progression of liver metastasis (4 patients). Regarding treatment response, 3 patients presented stable disease, 1 patient showed partial response, and 1 had disease progression. The mean treatment duration was 16.5 months. Grade 3 or 4 adverse events were observed in three patients, 1 with diarrhea, 1 with hypertension, and 1 with rash. All symptoms improved with dose reduction or temporary suspension of vandetanib. Conclusions: The management of advanced MTC with vandetanib allows for prolonged disease control (stable disease or partial response). Although adverse events are frequent, most are mild and severe cases are manageable.
The Appropriate Approach to Dual Drainage Partial Anomalous Pulmonary Venous Connection
Authors: Khalilipur Ehsan , Khajali Zahra , Firouzi Ata , Hosseini Zahra
Published: May 2021

Partial Anomalous Pulmonary Venous Connection (PAPVC) is a remarkably unusual congenital disorder in which the venous circulation is connected with one or more pulmonary veins. Approximately 90% of all PAPVCs start from the right lung, 7% start from the left lung, and 3% of patients are found to have two-side PAPVCs. Occasionally, PAPVC can be treated percutaneously employing an occlusion device, with regard that when there is a dual drainage PAPVC. Here, we want to share our experience in 5 dual drainages PAPVC patients whose 2 right-sided PAPVC's with dual drainage closure were unsuccessful. We also reviewed all published cases which were tried to treat percutaneously to build a pathway in which percutaneous closure is more feasible in addition to inhibit futile efforts.
pneumopericardium as complication of COVID-19
Authors: Kara Sam
Published: May 2021

The source of gas or air collection in the pericardial sac varies depending on the etiology and can result through one of the following: fistulization between the pericardial sac and an external source of air from neighboring air-containing organs (trachea, bronchi or gastrointestinal tract); tracking of air along pulmonary venous perivascular sheath from accompanying pneumomediastinum through the pericardial reflection; or an infectious process from within with a gas producing microorganism as the case in acute pericarditis. However, the majority of pneumopericardium cases results from an induced increase in the intrathoracic pressure that introduces air into the pericardial space from the tracheobronchial tree which can occur but not limited to the following conditions: blunt or penetrating trauma to the chest, chest surgery, severe obstructive airway disease, or positive pressure ventilation as in patient with COVID-19 developing adult respiratory distress syndrome (ARDS). Depending on the precipitating factors and etiology along with the amount and speed of air accumulation in the pericardial sac, pneumopericardium can be presented as simple or tension pneumopericardium
Three decades of progress from surgery to medical therapy for isolated neuroaxis BRAF V600E–positive Langerhans cell histiocytosis management: illustrative case
Authors: Muthiah Nallammai , Nowicki Kamil W. , Picarsic Jennifer L. , D’Angelo Michael P. , Marker Daniel F. , Andrews Edward G. , Monaco Edward A. , Niranjan Ajay
Published: May 2021

BACKGROUND

“Langerhans cell histiocytosis” (LCH) is a term that encompasses single-system or multisystem disorders traditionally characterized by a proliferation of clonal CD1a+/CD207+ myeloid-derived histiocytes. In most cases of LCH, mitogen-activated protein kinase (MAPK) pathway somatic mutations lead to near universal upregulation of phosphorylated extracellular signal-regulated kinase expression. The clinical manifestations of LCH are numerous, but bone involvement is common. Intracranial lesions, especially as isolated manifestations, are rare.

OBSERVATIONS

The authors presented the case of a long-term survivor of exclusive intracranial LCH that manifested with isolated craniofacial bone and intraparenchymal central nervous system recurrences, which were managed with 3 decades of multimodal therapy. The patient was initially diagnosed with LCH at age 2 years, and the authors documented the manifestations of disease and treatment for 36 years. Most of the patient’s treatment course occurred before the discovery of BRAF V600E. Treatments initially consisted of chemotherapy, radiosurgery, and open resections for granulomatous LCH lesions. Into young adulthood, the patient had a minimal disease burden but still required additional radiosurgical procedures and open resections.

LESSONS

Surgical treatments alleviated the patient’s immediate symptoms and allowed for tumor burden control. However, surgical interventions did not cure the underlying, aggressive disease. In the current era, access to systemic MAPK inhibitor therapy for histiocytic lesions may offer improved outcomes.
Adamantinomatous craniopharyngioma associated with a compromised blood–brain barrier: patient series
Authors: Prince Eric W. , Hoffman Lindsey M. , Vijmasi Trinka , Dorris Kathleen , McWilliams Jennifer A. , Jordan Kimberly R. , Mirsky David M. , Hankinson Todd C.
Published: May 2021

BACKGROUND

Adamantinomatous craniopharyngioma (ACP) is a highly morbid adult and pediatric brain tumor derived from epithelial remnants of the craniopharyngeal canal (Rathke’s pouch), which gives rise to the anterior pituitary gland. Standard therapy includes maximal safe resection with or without radiation therapy. Systemic antitumor therapy remains elusive. Immune-related paracrine signaling involving the interleukin-6 receptor (IL-6R) may contribute to ACP pathogenesis. Tocilizumab, a recombinant humanized monoclonal antibody against IL-6R, is approved by the US Food and Drug Administration but does not cross an intact blood–brain barrier.

OBSERVATIONS

In a phase 0 trial design, a single dose of tocilizumab was delivered intravenously before clinically indicated surgical intervention in 3 children with ACP. The presence of tocilizumab was assayed in plasma, tumor tissue, tumor cyst fluid, and cerebrospinal fluid (n = 1) using a novel enzyme-linked immunosorbent assay. Tocilizumab reached ACP tumor tissue and/or cyst fluid after one systemic dose in every patient.

LESSONS

This finding helps explain extant data that indicate tocilizumab may contribute to ACP therapy. It further indicates that ACP does not reside behind an intact blood–brain barrier, dramatically broadening the range of potential antitumor therapies against this tumor. This has substantial implications for the design of future clinical trials for novel therapies against ACP in both children and adults.
The Effects of Instructional Strategies on Preservice Teachers’ Math Anxiety and Achievement
Authors: Lorenzen Janelle K. , Lipscomb Thomas J.
Published: May 2021

The results reported herein represent the quantitative portion of a mixed method investigation that employed a non-equivalent control group design conducted to determine the effects of teaching methods on math anxiety and achievement among preservice elementary teachers enrolled in a mathematics course. Two teaching methods, inquiry-based learning (IBL) and direct instruction (DI), were compared. These results indicated that math anxiety decreased significantly for the IBL group while increasing for the DI group over the course of an academic semester. There was no difference in measured learning outcomes between the two groups. A significant negative correlation between math anxiety and student achievement, however, was found. Qualitative results, discussed in a companion article, contextualize these findings and reveal that the participants attributed varying levels of math anxiety to several factors including course content, teaching methods, assessments, and student behaviors.
Assessing the Role of Selective Fossilization Hypothesis in Determining Fossilizable Phonetic Errors in Tunisian EFL Learners’ Oral Output
Authors: Rahal Aicha , Smaoui Chokri
Published: May 2021

Fossilization is said to be a distinctive characteristic of second language (L2) learning (Selinker, 1972, 1996; Han, 2004). It is the most pervasive among adult L2 learners (Han and Odlin, 2006). This linguistic phenomenon has been characterized by cessation of learning, even though the learner is exposed to frequent input. Based on the findings of the MA dissertation of the first researcher which is about ‘phonetic fossilization’ and where she conducted a longitudinal study, Han’s Selective Fossilization Hypothesis (SFL) is used to analyze the obtained fossilized phonetic errors in relation to L1 markedness and L2 robustness with a particular focus on fossilized vowel sounds. This is an analytical model for identifying both acquisitional and fossilizable linguistic features based on learners’ first language (L1) markedness and second language (L2) robustness. The article first gives an overview of the theory of Interlanguage and the phenomenon of fossilization. Then, it introduces SFL. This is an attempt to study fossilization scientifically. In other words, it tests the predictive power of a developed L1 Markedness and L2 Robustness rating scale based on Han’s (2009) model. The present study has pedagogic implications; it is an opportunity to raise teachers’ awareness on this common linguistic phenomenon.
Empresa y personalidad
Authors: Suárez de Figueroa Fernando
Published: May 2021

.
Estadísticas selectivas: Cuadros estadísticos sobre Cataluña
Authors: Redacción Consejo de
Published: May 2021

.
La propiedad en el mundo americano
Authors: Duff, S. J. Edward
Published: May 2021

.
El Congreso de Wiesbaden por la Unión Política Europea
Authors: Álvarez, S. J. Alfredo
Published: May 2021

.
Neoliberalismo alemán: algunas acotaciones a su eficiencia
Authors: Recio, S. J. Eugenio M.
Published: May 2021

.
Estadísticas comentadas: La mujer española que trabaja en París en el servicio doméstico
Authors: Martín Montoya S. J. P.
Published: May 2021

.
Ejemplaridad social de la familia
Authors: Brugarola. S. J. Martín
Published: May 2021

.
Periódicos de empresas
Authors: González Páramo José Manuel
Published: May 2021

.
Amar la verdad
Authors: Redacción Consejo de
Published: May 2021

.
I.- Crónica Social de España
Authors: V. F
Published: May 2021

.
Effect of a Sleep Hygiene Education Program Using Telephone Follow-up Method on the Sleep Quality of the Elderly
Authors:   Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran., Moradi Maryam , Mohammadzadeh Hamideh ,   Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran., Noori Reza ,   Department of Community Health and Management Nursing, Faculty of Nursing, Gonabad University of Medical Sciences, Gonabad, Iran., Basiri Moghadam Kokab ,   Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran., Sadeghmoghadam Leila ,   Social Development and Health Promotion Research Center, Gonabad University of Medical Sciences, Gonabad, Iran.
Published: May 2021

Objectives: Low quality sleep is one of the most common problems in old age. The present study aims to determine the effect of a sleep hygiene education program using Telephone Follow-Up (TFU) method on the sleep quality of the elderly. Methods & Materials: This quasi-experimental study was conducted on 80 eligible elderly people aged 60-74 years who were selected using a systematic random sampling method and were randomly assigned into intervention and control groups. The intervention group received a one-hour face-to-face education session on sleep hygiene. The TFU were carried out two times per week in the first month and once a week in the second month after intervention. The control group received routine care. The data collection tools were a demographic form and the Pittsburgh Sleep Quality Index (PSQI) questionnaire. The PSQI was completed for both groups immediately after the second month. Results: There was no statistically significant difference in the mean PSQI score before intervention in the intervention (8.02) and control (7.47) groups (P=0.32), but after the intervention, the mean PSQI score in the intervention group (5.42) was significantly reduced compared to the control group (7.67) (P<0.001). Conclusion: Sleep hygiene education program based on TFU improves the sleep quality of the elderly. It is recommended that health care providers use this method to improve the sleep quality of the elderly.
5G Technology : A Survey of Architecture and Emerging Technologies
Authors: Vandra Hitesh H
Published: May 2021

Research on 5G mobile wireless technologies has been very active in both academia and industry in the past few years. While there has been certain consensus on the overall requirements of 5G wireless systems (e.g., in data rate, network capacity, delay), various enabling wireless technologies have been considered and studied to achieve these performance targets. It has been quite clear, however, that there would be no single enabling technology that can achieve all diverse and even conflicting 5G requirements.
In the near future, i.e., beyond 4G, some of the prime objectives or demands that need to be addressed are increased capacity, improved data rate, decreased latency, and better quality of service. To meet these demands, drastic improvements need to be made in cellular network architecture.
This paper presents the results of a detailed survey on the fifth generation (5G) cellular network architecture and some of the key emerging technologies that are helpful in improving the architecture and fulfil the demands. In this detailed survey, the prime focus is on the 5G cellular network architecture, massive multiple input multiple output technology, and device-to-device communication (D2D). Along with this, some of the emerging technologies that are addressed in this paper include interference management, spectrum sharing with cognitive radio, ultra-dense networks, multi-radio access technology association, full duplex radios, milli-meter wave solutions for 5G cellular networks, and cloud technologies for 5G radio access networks and software defined networks. In this paper, a general probable 5G cellular network architecture is proposed, which shows that D2D, small cell access points, network cloud, and the Internet of Things can be a part of5G cellular network architecture. A detailed survey is included regarding current research projects being conducted in different countries by research groups and institutions that are working on 5G technologies.
The Pursuit of the Beauty of Physical Exercise
Authors: Chen Xiaodan , Chen Yiyi
Published: May 2021

Proceeding from the perspective of aesthetics, this paper mainly adopt the Chinese traditional aesthetic thought with the reference to western mainstream aesthetic theory and focuses on the analysis of the beauty of sports at the micro level. At the same time, the competitive sports, campus education and beauty embodied in the sports for all were recovered and explored and interpreted with the aim to enable more people to be clear of the charm of sports exercise and to improve the appreciation level of people on physical exercise, inspire more people to take part in sports exercise, promote the development of people's physical and mental health level, improve the quality of life of the people. The development of the theories and thoughts of sports aesthetics cannot be separated from the cultural consciousness and guidance of the scholars and workers in this field, and it is also the embodiment of the cultural confidence and cultural consciousness of the sports workers.
Effect of Meteorological Conditions and Anthropogenic Factors on Air Concentrations of PM2.5 and PM10 Particulates on the Examples of the City of Kielce, Poland
Authors: Szeląg B. , Studziński J. , Majewska M.
Published: May 2021

The paper analyzes the influence of meteorological conditions (air temperature, wind speed, humidity, visibility) and anthropogenic factors (population in cities and in rural areas, road length, number of vehicles, emission of dusts and gases, coal consumption in industrial plants, number of air purification devices installed in industrial plants) on the concentration of PM2.5 and PM10 dusts in the air in the region of Kielce city in Poland. Spearman correlation coefficient was used to evaluate the relationship between the mentioned independent variables and air quality indicators. The calculated values of the correlation coefficient showed statistically significant relationships between air quality and the amount of installed air purification equipment in industrial plants. A statistically significant effect of the population in rural settlement units on the increase in air concentrations of PM2.5 and PM10 was also found, which proves the influence of the so-called low emission of pollutants on the air quality in the studied region. The analyses also revealed a statistically significant effect of road length on the decrease in PM2.5 and PM10 air content. This result indicates that a decrease in traffic intensity on particular road sections leads to an improvement in air quality. The analyses showed that despite the progressing anthropopression in the Kielce city region the air quality with respect to PM2.5 and PM10 content is improving. To verify the results obtained from statistical calculations, parametric models were also determined to predict PM2.5 and PM10 concentrations in the air, using the methods of Random Forests (RF), Boosted Trees (BT) and Support Vector Machines (SVM) for comparison purposes. The modelling results confirmed the conclusions that had been made based on previous statistical calculations.
Psychometric Report for the 2019 Knowledge for Teaching Early Elementary Mathematics (K-TEEM) Test
Authors: Schoen Robert , Yang Xiaotong , Solmaz Gizem
Published: May 2021

The 2019 Knowledge for Teaching Early Elementary Mathematics (2019 K-TEEM) test measures teachers’ mathematical knowledge for teaching early elementary mathematics. This report presents information about a large-scale field test of the 2019 K-TEEM test with 649 practicing educators. The report contains information about the development process used for the test; a description of the sample; descriptions of the procedures used for data entry, scoring of responses, and analysis of data; recommended scoring procedures; and findings regarding the distribution of test scores, standard error of measurement, and marginal reliability. The intended use of the data from the 2019 K-TEEM test is to serve as a measure of teacher knowledge that will be used in a randomized controlled trial to investigate the impact—and variation in impact—of a teacher professional-development program for early elementary teachers.
External Negative Pressure Dressing System(ENDPS) VS. Traditional Wound Dressing for Cesarean Section Incision in Obese Women: A Randomized Controlled Trial
Authors: Muhammad : Dalia Magdy Mokhtar
Published: May 2021

What is already known on this subject? AND What does this study add? Obesity is associated with increased cesarean section delivery rates and surgical site wound complication with associated increased post-operative morbidity, post-operative pain and length of hospital stay. What does this study add? Negative pressure wound therapy (NPWT) technology could be used as a prophylactic measure to reduce surgical site wound complications in obese women undergoing cesarean section by immediate postoperative application in clean-contaminated, closed surgical incisions.
Otolaryngology Symptoms and Signs in COVID-19 Patients: A Descriptive Study in Oman
Authors: Al Sheibani Salma Mohammed
Published: May 2021

Objectives To conduct a demographic analysis of COVID-19 cases highlighting on the otolaryngology presenting symptoms and signs that developed throughout the course of the disease. The symptoms related to otolaryngology may present early in the natural course of the disease. The literature on otolaryngology manifestations in these patients is scanty even though they can play an important role in suspecting and investigating positive cases early in the course of disease. This can improve not only the outcome of treatment of these cases but also minimize the spread from these cases if remain unsuspected. The final goal is to add these symptoms to the check list which must be completed by the first contact physician. Methods The physicians who were directly involved in dealing with confirmed cases of COVID-19 were the participants. An online form was generated and circulated to these physicians. The information gathered was about all presenting symptoms including those related to otolaryngology. Patients belonging to both ‘on treatment’ and ‘quarantine’ groups were studied. The patients’ data was analyzed after dividing them into various groups. Results A total of 322 patients aged 5 months to 81years were studied. Fever (71.7%) and cough (70.18%) were the top two commonest symptoms. Sore throat was noted in 15.8%. Headache and rhinorrhea were found in 10.24% and 6.83% cases respectively. There were 4.04% cases who presented with loss of taste and smell. Out of the total 322 patients 70.8% required admission while the others were recommended home quarantine. Ten percent patients required intubation as they were not able to maintain saturation by all other means. Conclusions The otolaryngology manifestation in our study is under reported in the absence of a check list and lack of awareness in the beginning of the pandemic. The literature is scanty on this issue as the knowledge about this new virus and its behavior is still building. Creating a check list including otolaryngology manifestations and made available in all institutions receiving these patients is essential.