bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital competence as arequirement for development of innovative educational environment at university
Authors: Лысова Ирина Ивановна , Витохина Ольга Алексеевна , Волкова Ольга Владимировна
Published: October 2020

The study examines innovative educational technologies for their potential impact on and use in teaching, learning, and creative inquiry within the higher education environment. The analysis of the problem connected with creating (transforming) the educational environment in the context of digitalization showed that this multifaceted task requires further study. The aim of the work is to review and assess the implementation of digital technologies in the university educational environment. Theurgency of using digital technologies in the teaching-learning process has been substantiated; the importance of the digital competence formation for all educational process participants has been shown; the significance of filling the curricular with online products has been emphasized; the need to combine traditional educational methods with innovative technologies has been confirmed by the example of foreign language teaching. A systematic approach, desk research and expert assessment methods were used. The new ways of forming digital competence based on the use of open online resources are revealed; original ways of convergence of traditional and innovative educational environment are presented. The authors attempted to develop a methodological approach towards connecting learning inside/outside the classrooms through the digital cloud and estimate the impact of the digital revolution on the learners and teachers’ profile. The research results can be used by teachers perceiving digital competence as a new tool for converting learning environment into a comfort zone.
Педагогические условия формирования профессионально-педагогической культуры преподавателя СПО аграрного профиля
Authors: Любимова Наталья Ивановна , Никулина Наталья Николаевна
Published: October 2020

Потребность в профессионально подготовленных кадрах педагогов-аграриев для учреждений среднего профессионального образования аграрного образовательного кластера постоянно растет. Однако остается недостаточно исследованной проблема выбора педагогических условий для успешного формирования профессионально-педагогической культуры будущих педагогов-аграриев. Данные тестирования, опроса и анкетирования свидетельствуют о том, что в совершенствовании и развитии нуждаются все компоненты профессионально-педагогической культуры педагога-агрария – мотивационный, аксиологический, профессионально-педагогический, технологический, культурологический и коммуникативный. Результаты исследования показали наиболее оптимальные условия: 1) создание педагогической среды для формирования профессионально-педагогической мотивации и ценностного отношения к профессии педагога профессионального обучения; 2) включение студентов в систему практико-ориентированного обучения на основе контекстного подходя, позволяющего формировать компоненты профессионально-педагогической культуры в процессе учебной, квазипрофессиональной и профессиональной деятельности; 3) ознакомление студентов с основами герменевтического подхода в педагогике и привлечение их к взаимодействию с педагогами и студентами факультета среднего профессионального образования университета на основе взаимного понимания и эмпатии.
Дистанционное обучение английскому языку в системе Moodle (метод синергетического стимулирования)
Authors: Панкратова Светлана Анатольевна
Published: October 2020

Автор обращается к значимой проблеме повышения качества дистанционного обучения на примере применения метода синергетического стимулирования. На современном этапе проблема остается активно дискутируемой, идет наработка практических и теоретических основ дистанционного обучения для оптимизации процесса освоения иностранного языка в системе Moodle. В связи с этим рассмотрена проблема дистанционного обучения английскомуязыку в кинематографическом вузе с учетом эмоциональной составляющей процесса обучения онлайн. Выявлены неочевидные плюсы и минусы дистанционного образования. Предлагаемый метод синергетического стимулирования позволяет сформировать шкалу студенческого прилежания и академической успеваемости и может быть полезен как частным языковым школам, так и государственным образовательным учреждениям. Метод реализуется в онлайн-коммуникации на английском языке и способствует стимулированию студенческого интереса к изучению языка. Составлена девятибалльная шкала студенческой успеваемости согласно российским и английским градациям. Даны языковые примеры персонализированного стимулирования студентов преподавателем.
Система вокализма национального варианта французского языка Швейцарии: оппозиции гласных звуков
Authors: Куксова Елена Леонидовна
Published: October 2020

Французский язык представлен множеством вариантов за пределами метрополии, например, в Швейцарии. Несмотря на множество уникалий, нестандартное произношение в наибольшей степени противопоставляет французский язык метрополии национальному варианту французского языка Швейцарии. Ислледования, посвященные системе вокализма национального варианта французского языка Швейцарии, не отображают фонетические уникалии современной франкоговорящей Швейцарии. В связи с этим автором систематизированы данные по фонетическимявлениям французского языка Швейцарии в системе вокализма. Изучению подвергаются фонетические оппозиции [ɛ̃] – [ɑ̃], [α] – [a], [ɔ] – [o], [e] – [ε], [ɛ̃] – [oẽ]. В ходе работы с фактическим материалом исследования автор фиксирует наличие либо отсутствие выявленных оппозиций, а также уточняет частотность каждого случая оппозиции в целом, вне зависимости от франкоговорящего кантона.
Манипулятивные стратегии и тактики в шванках российских немцев
Authors: Чистюхина Евгения Александровна , Жукова Любовь Владимировна
Published: October 2020

В современном языкознании внимание ученых все больше привлекают проблемыживой коммуникации, результатом чего стало появление исследований, посвященных изучению речевого взаимодействия с точки зрения коммуникативных стратегий и тактик на материале текстов разных жанров. Однако многие стратегии и тактики до сих пор не описаны, что обусловлено, с одной стороны, появлением новых типов дискурса, и с другой стороны, многообразием самих речевых стратегий и тактик в уже существующих типах текста. В связи с этим в качестве цели исследования авторы выдвигают выявление и описание речевых тактик и тактических приемов, способствующих актуализации стратегии манипуляции, используемойгероями шванков в конкретных ситуациях общения. Стратегия манипуляции воплощается в шванках с помощью различных речевых тактик, которые реализуются многочисленными лексическими, грамматическими и стилистическими средствами. Обладая высокой степенью результативности, манипулятивные стратегии и тактики способствуют достижению главной коммуникативной цели – обличению таких человеческих пороков. В процессе исследования получено представление об особенностях речевого взаимодействия российских немцев, носителей уникальных островных говоров, зафиксированных в текстах шванков. Результаты исследованияоткрывают дальнейшие перспективы для изучения шванков российских немцев в русле коммуникативной прагматики.
Evaluation of clinicopathologic and Survival Characteristic of Childhood and Adolescent Hodgkin's lymphoma
Authors: Binesh Fariba , Hashemi Azam Sadat , Naghibi Nazila , Pourhosseini Fatemeh , Mirhosseini Sara
Published: October 2020

Background: Given that Hodgkin’s lymphoma (HL) accounts for 5%–6% of pediatric malignancies, we investigated the clinical characteristics and survival of pediatric patients with HL in our center.
Materials and methods: In this cross sectional and retrospective study, the medical charts of all patients under the age of 18 diagnosed with HL from 2006 to 2016 at Shahid Sadoughi Hospital Yazd, Iran, were retrieved. Data were analyzed by SPSS (version 18) using K square and T-Test. Survival was analyzed using Kaplan-Meier estimates, and multivariate analysis was performed using the Cox regression method.
Results: This study included 34 patients. In terms of gender, there were 20 boys and 14 girls in this study. The mean age of the patients was 10.42 years. The most common subtype of HL was mixed cellularity. Regarding disease stage, 55.9% of the patients were in stage I. All subtypes except for nodular sclerosis were more common in boys. The mean survival of patients in this study was 151.68 months. At the end of the study, there was just one death. The 5-year survival of patients was 100% and the 10-year survival was 94%. There was no significant relationship between survival and sex, histologic subtype, or the stage of the disease.
Conclusion: The results of the current study showed that majority of our patients had been diagnosed in a low stage and we achieved the best results for 5- and 10- year- overall survival through applied treatment.
Comparison of Magnetic Resonance Imaging T2 Results in Beta-Thalassemia Patients Treated by Deferasirox or Combination of Deferoxamine and Deferiprone
Authors: Mirbehbahani Nargesbeigom , Vaseghi Ghazal , Rashidbaghan Azam , Vakili Mohammad Ali , Jahazi Azam
Published: October 2020

Background: Iron extra load is an anticipated and lethal consequence of chronic blood transfusion in major beta-thalassemia patients; therefore it is necessary to use an efficient iron chelator drug to stimulate the evacuation of the surplus iron from the body. This trial was performed to compare myocardial and hepatic magnetic resonance imaging T2 (MRI T2*) results of beta-thalassemia patients treated by Deferasirox or combination of Deferoxamine and Deferiprone.
Material and Methods: In this clinical trial, 44 patients who were on combination therapy with Deferiprone and Deferoxamine and complied with the inclusion criteria were randomized to either case (Deferasirox) or control (combined therapy) groups. Twenty-two patients in the case group received Deferasirox. For 22 patients in the control group, prior treatment with Deferiprone and Deferoxamine was continued. Myocardial and hepatic MRI T2* results were assessed before and after the study. Moreover, serum ferritin level (SFL) was evaluated every 3 months.
Results: SFL at the start of the study did not differ significantly in two groups (2158.1± 1012.2 μg/L in the control group vs. 2145.5±1121.4 μg/L in the case group) (P=0.08). SFL at the end of the study did not differ significantly in two groups (2204.4±1143.5 μg/L in the control group vs. 2347.2±1236.6 μg/L in the case group), either (P=0.12). In each group, myocardial and hepatic MRI T2 at the start and at the end of the trial did not differ significantly (P>0.1).
Conclusion: Myocardial and hepatic MRI T2*results were better in the control (combination therapy) group than those in the case (Deferasirox) group. Major beta-thalassemia patients replied to combined treatment better than Deferasirox.
Kikuchi Fujimoto Disease with Rare Demonstrations Associated with Lupus Erythematosus without Obvious Clinical Symptoms: A Case Report
Authors: Ferdosian Farzad , Binesh Fariba , Vaghefi Marzie , Sanaei Ehsan
Published: October 2020

Kikuchi Fujimoto Disease (KFD), also known as necrotic histiocystic lymphadenitis, is a condition with unknown etiology. Probably, infectious, viral, and also autoimmune etiologies, especially lupus erythematosus, contribute to this disorder. The common signs are lymphadenopathy along with fever and leukopenia. Our case was a13-year-old boy with fever of unknown origin. He underwent ordinary fever of unknow origin (FUO) investigations and the only positive finding on his examination was lymphadenopathic fever of posterior cervical chain. The results of primary tests and also cultures of blood and urine samples did not have any specific contribution to diagnosis of infectious causes. Besides, bone marrow aspiration and biopsy led to the exclusion of chances of lymphoma or other malignancies. Finally, diagnosis of KFD was confirmed by the use of dissection of cervical lymph nodes and also via immunohistochemical tests and simultaneous positive antinuclear antibody (ANA). Hence, the patient was put on suitable medical treatment for lupus. Given the rare demonstrations of this case, i.e., the male sex and fever of unknown origin, and also the positive ANA despite clear clinical symptoms of lupus, this case was presented to provide both proper education and make a faster and more appropriate diagnosis.
White lies in pediatric care: a qualitative study from nurses’ perspective
Authors: Nikbakht Nasrabadi Alireza
Published: October 2020

Communication and sharing information with ill children are challenging. To protect a child from the bitter reality, sometimes use of well-intended untruths, or white lies is necessary. This research aimed at studying the experiences of nurses about the use of white lies in in pediatric clinical setting. In this qualitative, content-analysis study, 24 on-duty pediatric nurses were interviewed in 2019. Data were collected through purposeful sampling using semi-structured interviews, and the collected data were analyzed according to Granheim and Landman’s method using MAXQDA-10 software. Eighteen female and six male nurses with the mean age of 42 ± 3/7 years and mean work experience of 16 ± 4/1 years were selected to participate in this study. Data analysis showed that use of white lies depends on both situation and several other factors classified into five general categories: nature of data, childhood characteristics, family norms, treatment team’s capabilities and organization policies. Treatment team members need to improve their communication skills to convey therapeutic information to the ill child’s family appropriately. To do so, special guidelines should be prepared for healthcare staff in pediatric clinical setting
Protecting Healthcare Workers From COVID-19 and the Assaulting Society: Indian Perspective
Authors: Das Nileswar , Mishra Priyanka
Published: October 2020

The novel Coronavirus Disease (COVID-19) pandemic has created a massive burden on Healthcare Workers (HCWs). Working in a potentially infectious environment, HCWs are at higher risk of physical and psychological illnesses. However, providing adequate Personal Protective Equipment (PPE) is necessary to protect HCWs from rising violence in the community due to fear, frustration, and stigma. The authors highlighted this important yet relatively underresearched entity of public behavior that demands further studies in the future.
Estudo sobre a utilização racional de medicamentos em idosos
Authors: Silva Rodrigo Rodrigues , Campos Marília Silveira de Almeida , Pereira Leonardo Régis Leira , Santos Álvaro Da Silva
Published: October 2020

Este estudo teve como objetivo analisar as Interações Medicamentosas Potenciais e os Medicamentos Potencialmente Inapropriados para Idosos usuários das farmácias da atenção primária. Estudo descritivo com desenho transversal com amostra de 384 idosos/cuidadores, distribuídos entre todas as seis farmácias da cidade de Uberaba, MG no ano de 2015. Todas as prescrições apresentadas foram analisadas e os medicamentos classificados segundo a Anatomical Therapeutic Chemical Classification; e, na base de dados MICROMEDEX® e pelo Critério de Beers-Fick (2015). Foram analisadas 580 prescrições e verificadas 570 Interações, estando 47,4% dos participantes sujeitos a pelo menos uma interação; 54,7% utilizavam medicamentos inapropriados. Os medicamentos mais envolvidos nas interações foram: omeprazol (19,5%), AAS (14,2%) e losartana (13,2%). Verificou-se a necessidade de adoção de medidas gerenciais e educativas que visem mais segurança e eficácia terapêutica para os idosos.
Produção do cuidado e as relações intersubjetivas com usuários hipertensos na Estratégia Saúde da Família
Authors: Torres Geanne Maria Costa , Figueiredo Inês Dolores Teles , Cândido José Auricélio Bernardo , Pinto Antonio Germane Alves , Almeida Maria Irismar De
Published: October 2020

Trata-se de um estudo descritivo, com abordagem qualitativa, realizado em um Município do interior do Estado do Ceará, Brasil, em 2016, com o objetivo de analisar a produção do cuidado e as relações intersubjetivas com usuários hipertensos na Estratégia Saúde da Família. Os dados foram coletados por um checklist para observação sistemática não participante e foram tratados pela Análise de Conteúdo Temática. Participaram 14 usuários e dois profissionais: uma enfermeira e um médico. Duas categorias emergiram: “Produção do cuidado nas relações intersubjetivas: acolhimento, diálogo, escuta, vínculo”; e, “Elementos emanados na interação interpessoal: empatia, respeito mútuo, confiança, acompanhamento nas reflexões”. Nas observações, estas práticas ainda estão centradas na doença, necessitando fortalecer o diálogo no campo das tecnologias relacionais para aprimorar a produção do cuidado sob a perspectiva da intersubjetividade na atenção. Verifica-se a necessidade de impulsionar as tecnologias leves na equipe Saúde da Família que instrumentalizam novas habilidades direcionadas à comunicação, à subjetividade e à produção do cuidado.
Influência do peso elevado no desenvolvimento motor de lactentes: uma revisão integrativa
Authors: Silva Carolina Fioroni Ribeiro da , Pires Roberta Jéssica Silva , Loss Igor De Oliveira , Guimarães Elaine Leonezi
Published: October 2020

Esta é uma revisão integrativa considerando o período de 2007 a 2019, com o objetivo de conhecer as publicações acerca da influência do sobrepeso ou obesidade no desenvolvimento motor de lactentes. As bases de dados consideradas foram: PubMed, Medical Subject Headings, LILACS, MEDLINE, Biblioteca Cochrane, PEDro e Science Direct e os descritores: ‘‘obesidade’’, ‘‘sobrepeso’’, ‘‘desenvolvimento motor’’ e “lactentes”. De uma busca inicial de 210 artigos foram considerados quatro artigos. Os estudos demonstraram que o peso elevado para a idade parece ser um fator de risco para atraso no desenvolvimento motor e cognitivo do lactente. É importante acompanhar o desenvolvimento do lactente com peso elevado, orientar e intervir de maneira a minimizar e prevenir alterações, cuidando para que estas não se estendam e prejudiquem a criança na idade escolar, e, idade adulta. A necessidade de mais estudos na temática se mostrou premente.
Efficiency of direct current catenary distance protection with adaptation to traction mode
Authors:   Omsk State Transport University (OSTU), Khusainov Ermek Kenzhebulatovich , Kondratyev Yuriy Vladimirovich ,   Omsk State Transport University (OSTU)
Published: October 2020

The paper considers efficiency of distance protection with adaptation to rectifier converters of traction substations with different number of pulsations. The authors have revealed the influence of inclination of the external characteristic of rectifier converters on total efficiency of protection. They have also introduced notions for indicators of efficiency of distance protection with adaptation: сoefficient that determines the increase ratio of peak operating current; coefficient that determines the decrease ratio of minimal voltage on traction substation buses; coefficient that determines the increase ratio of maximal peak power of catenary feeder realized by 3.3 kV direct current. The paper presents methods of their calculation.
Incident management in system of technical operation of microprocessor devices of railway automation and telemechanics
Authors:   Irkutsk State Transport University (ISTU), Pultyakov Andrey Vladimirovich , Likhota Roman Victorovich ,   JSC Russian Railways, Alekseenko Vladimir Alexandrovich ,   Irkutsk State Transport University (ISTU)
Published: October 2020

The paper discusses the issues of incident management at technical operation of microprocessor systems of railway automation and telemechanics on the railway network of the JSC Russian Railways. The widely used microprocessor interlocking centralization of switches and signals (MPI) EBILock 950, the development of a joint Russian-Swedish company Bombardier Transportation (Signal), is considered as an object of the research. The analysis of algorithms and patterns of interaction between the operating staff of operating enterprises and specialists of service centres revealed a number of shortcomings in the system of the MPI maintenance and repair organization. As a result, the authors have proposed an alternative scheme for organizing the technical operation of microprocessor systems based on the incident management system implemented as a web application. This application makes it possible to monitor the quality and timing of service operations, accumulate information on methods for eliminating complex non-standard failures and automate the processing of requests by service centres.
Method for assessing fire risk on the basis of monitoring of fire-hazardous conditions of passenger cars electric equipment
Authors:   Russian University of Transport (RUT-MIIT), Khanis Vladislav Andreevich , Bespalko Sergey Valeryevich ,   Russian University of Transport (RUT-MIIT), Khanis Andrey Leonidovich ,   Southwest State University (SWSU), Khanis Anna Andreevna ,   Russian University of Transport (RUT-MIIT)
Published: October 2020

The paper substantiates an approach to assess a probability of electric equipment combustion in passenger cars. The method proposed is based on monitoring of parameters connected with physical processes that lead to combustion, and allows eliminating a human factor as a source of fire hazard from the consideration.
Features of entropy orderliness of transportation process for typical routes of urban public transport
Authors:   Tyumen Industrial University (TIU), Petrov Artur Igorevich
Published: October 2020

The paper presents the possibility, necessity, ideology and essence of the entropy method of estimating the orderliness of the transportation process in relation to urban public transport. Examples of numerical definition of the relative entropy of the transportation process on typical public transport routes are given. The paper shows that the level of orderliness of the transportation process, identified by relative entropy, is determined by the specifics of the spatial location of public transport routes in terms of the urban area and mainly depends on the quality of users of public transport services.
On assessment of fatigue strength of freight car structures for high-speed trains
Authors:   JSC Scientific Research and Design Technology Institute of Rolling Stock, Volokhov Grigoriy Mikhaylovich , Gadzhimetov Gadzhimet Isamedinovich ,   JSC Scientific Research and Design Technology Institute of Rolling Stock
Published: October 2020

The paper presents results of analysis of statements of relevant methods on assessment of fatigue strength of loadbearing structures of cars, locomotives and motive-coach rolling stock. It also discusses methods that are established by regulatory documents supporting technical regulations of the Customs Union and European standards. The authors have carried out an analysis of methods of both rolling stock tests on the line and rig tests of load-bearing structures. During the analysis they revealed strong and weak points of the existing methods for assessing fatigue strength. As a result, methodical approaches to assess fatigue strength of load-bearing structures of freight cars for high-speed trains were proposed.
Improvement of operational indicators of automobile internal combustion engines by development of thermogasdynamics in intake system
Authors:   Ural Federal University named after the first President of Russia B. N. Yeltsin (UrFU), Plotnikov Leonid Valeryevich , Grigoryev Nikita Igorevich ,   Ural Federal University named after the first President of Russia B. N. Yeltsin (UrFU), Kochev Nikolay Sergeevich ,   Ural Federal University named after the first President of Russia B. N. Yeltsin (UrFU), Osipov Leonid Evgenyevich ,   Ural Federal University named after the first President of Russia B. N. Yeltsin (UrFU)
Published: October 2020

Piston internal combustion engines (ICE) are the most widespread sources of energy among heat engines. The ICEs are widely used as power installations on road transport. Nowadays, most of the ICEs are equipped with the boost-pressure charge system. Thermal and mechanical improvement of processes in intake system largely affects the efficiency of piston engines. The paper proposes a method of stabilization of pulsing flows in the intake system by the installation of the equalizing frame in the output channel of the turbocharger (TC). Investigations were carried out on an experimental installation that consisted of single-cylinder engine (8.2/7.1) and boost-pressure charge system (ТКR-6). Determination of instantaneous values of air flow speed and local heat transfer coefficient was conducted by the use of constant-temperature heat loss anemometer with an original design. It is established that the presence of the equalizing frame in the intake system leads to the decrease of turbulence level up to 25 % in comparison with the basic intake system (with preservation of metering characteristics). It is shown that the installation of the equalizing frame in the intake system of the ICE with TC also leads to the decrease in heat transfer intensity up to 15 % in comparison with the basic system. As a result, the authors determined values of breakdown intensity and probability of failure-free operation of engine with basic and modernized intake system.
Prospects of improving technical and economic indicators of electric rolling stock
Authors:   Emperor Alexander I St. Petersburg State Transport University (PSTU), Maznev Alexander Sergeevich , Kiselev Alexander Alexandrovich ,   Emperor Alexander I St. Petersburg State Transport University (PSTU), Usov Vladimir Аndreevich ,   Ural state university of railway transport (USURT), Kalinina Аnnа Аndreevna ,   Emperor Alexander I St. Petersburg State Transport University (PSTU)
Published: October 2020

The paper considers methods of improving technical and economic indicators of direct current electric rolling stock. The authors propose a scheme of electric drive with pulse converters that are controlled by instantaneous values of armature and exciting currents. The scheme provides the realization of regenerative and resistance braking on almost the entire speed range. The paper also presents frequency characteristics of converters at speed from 5 to 100 km/h and proposes a scheme of direct current electric locomotive with pulse regulation of voltage on three connections of traction motors. Moreover, the authors discuss a structure of autonomous voltage inverter with group switching and reduced number of fully controlled semiconductor devices and present methods to prevent wheelspin through changing their load on rails and excitement of traction motors.
Condition analysis of existing technological process for repair of electric traction motors of direct current freight locomotives with the use of theory of network planning and control
Authors:   Omsk State Transport University (OSTU), Bublik Vladimir Vasilyevich , Gatelyuk Oleg Vladimirovich ,   Omsk State Transport University (OSTU), Esin Nikolay Vasilyevich ,   Omsk State Transport University (OSTU), Smirnov Viktor Alexandrovich ,   Omsk State Transport University (OSTU), Yurasov Oleg Dmitrievich ,   Omsk State Transport University (OSTU)
Published: October 2020

The paper provides information about the experience of using network schedules in the conditions of service locomotive depots that contribute to the observance of logical discipline in planning, drawing up calendar plans and managing repair work to restore traction engines of 2ES6 series of freight electric locomotives, as well as a set of measures to optimize the technological process of traction engines repair in the volume of TR-600. The analysis of the existing technological process of repair of traction engines allowed to reveal features of distribution of time of each operation in branches of the network schedule with identification of time parameters of volumes of repair of its separate nodes, and also to justify reserves allowing to accelerate carrying out planned repairs of traction engines in volume of TR-600 of the electric locomotive. The results obtained can be used in service locomotive depots when justifying measures to optimize the technological process of repair of electric locomotives in order to reduce the time and economic costs of repairing electric locomotives 2ES6.
Development of methods for testing catenary cantilevers
Authors:   Omsk State Transport University (OSTU), Lukyanova Olesya Andreevna , Tarasenko Alexander Vladimirovich ,   Omsk State Transport University (OSTU), Chertkov Ivan Evgenyevich ,   Omsk State Transport University (OSTU)
Published: October 2020

Catenary cantilevers are key devices that maintain the spatial position of catenary suspension wires. They determine the catenary parameters and indicators, increase of the calculation accuracy of which requires the consideration for maximum number of factors that affect the work of cantilevers in conditions of operation. The paper includes the overview of methods for testing catenary cantilevers and considers methods and devices for studying friction in cantilever connection joints, including those that consider environment temperature. As a result, the authors propose an improved method of calculation of catenary suspension parameters that is developed on the basis of experimental research results, the use of which will increase the accuracy of adjustment of wires and ropes.
PERFIL MOTOR DE ESCOLARES DO 1º ANO DO ENSINO FUNDAMENTAL I DA SEMEC NO BAIRRO DA TERRA FIRME (BELÉM – PA)
Authors: Vila Nova De Vasconcelos Kaythy Jhullianny
Published: October 2020

O presente estudo objetivou traçar o perfil motor dos escolares do primeiro ano do ensino fundamental I da Secretaria Municipal de Educação (Semec), mais precisamente os alunos das escolas municipais Solerno Moreira, Maria Stellina Valmont e Parque Amazônia, localizadas no bairro da Terra Firme, no município de Belém, Pará, envolvendo crianças na faixa etária de 5 a 8 anos, devidamente matriculadas, cursando o primeiro ano do ensino fundamental I. A amostra foi feita com escolares de ambos os gêneros, em um total de 225 alunos, sendo 97 meninas (n=97) e 128 meninos (n=128), 125 crianças da Escola Municipal Solerno Moreira, 51 crianças da Escola Municipal Maria Stellina Valmont e 49 crianças Escola Municipal Parque Amazônia. Como instrumento utilizou-se o Manual de Avaliação Motora proposto por Francisco Rosa neto (2002), através da Escala de Desenvolvimento Motor (EDM). A análise foi feita através da estatística descritiva e comparativa. Os resultados demonstraram que a maioria das crianças encontram-se num nível Normal Médio na escala de desenvolvimento moto, destes sujeitos apenas 16% pratica atividade esportiva fora do ambiente escolar; quanto à lateralidade a maioria das crianças investigadas são destras. Observou-se que as os praticantes regulares de atividades esportivas, apresentaram índices significativamente inferiores na idade cronológica e significativamente superiores na idade motora geral, no quociente motor geral, na idade cronológica/idade motora, nos parâmetros de idade motora (exceto IM4) e nos parâmetros de quociente motor. Assim, como pontos conclusivos, evidenciou-se a necessidade da implantação curricular da disciplina Educação Física na Educação Infantil para melhorar o acervo motor das crianças e consequentemente elevar seu nível de desenvolvimento motor. Espera-se que este estudo venha contribuir para a melhoria do planejamento dos profissionais que lidam com crianças e que também forneçam subsídios para novas pesquisas.
Mitigation of Flooding in Stormwater Systems Utilizing Imperfect Forecasting and Sensor Data with Deep Deterministic Policy Gradient Reinforcement Learning
Authors: Saliba Sami , Bowes Benjamin , Adams Stephen , Beling Peter , Goodall Jonathan
Published: October 2020

Climate change and development have increased urban flooding, requiring modernization of stormwater infrastructure. Retrofitting standard passive systems with controllable valves/pumps is promising, but requires real-time control (RTC). One method of automating RTC is reinforcement learning (RL), a general technique for sequential optimization and control in uncertain environments. The notion is that an RL algorithm can use inputs of real-time flood data and rainfall forecasts to learn a policy for controlling the stormwater infrastructure to minimize measures of flooding. In real-world conditions, rainfall forecasts and other state information, are subject to noise and uncertainty. To account for these characteristics of the problem data, we implemented Deep Deterministic Policy Gradient (DDPG), an RL algorithm that is distinguished by its capability to handle noise in the input data. DDPG implementations were trained and tested against a passive flood control policy. Three primary cases were studied: (i) perfect data, (ii) imperfect rainfall forecasts, and (iii) imperfect water level and forecast data. Rainfall episodes (100) that caused flooding in the passive system were selected from 10 years of observations in Norfolk, Virginia, USA; 85 randomly selected episodes were used for training and the remaining 15 unseen episodes served as test cases. Compared to the passive system, all RL implementations reduced flooding volume by 70.5% on average, and performed within a range of 5%. This suggests that DDPG is robust to noisy input data, which is essential knowledge to advance the real-world applicability of RL for stormwater RTC.
Optical Sensing Approach to Recognition of Different Types of Particulate Matters for Sustainable Indoor Environment Management
Authors: Ahn Hosang , Kang Jae Sik , Choi Gyeong-Seok , Choi and Hyun Jung
Published: October 2020

As climate changes, our daily life has been much influenced by abnormal meteorological phenomena such as heavy rainfall, heat wave, heavy snowfall, and fine dust. Atmospheric air quality is worsening day by day and indoor air quality is also affected by interconnected daily activities throughout the inside and outside of buildings and houses. Nowadays, pollutants from various sources are emitted, transformed by sunlight, vapor, and ozone and transported into the city from country to country. Due to these reasons, there have been high demands to monitor the transportation of particulate matters and improve air quality. Monitoring of pollutants and identification of type and its concentration enables us to track and control its generation and consequently find out the solution. However, monitoring of pollutants, especially, particulate matter generation and its transportation is still not fully operated in atmospheric air due to its open nature and meteorological factors. Even though indoor air is relatively easy to monitor and control than outdoor in the aspect of specific volume and contaminant source, but it still needs to consider the meteorological parameters because indoor air is not fully separated from the outdoor air flow and contaminants transportation. In this study, optical approach using spectral sensor was attempted to reveal the feasibility of wavelength and chromaticity values of reflected light from specific particles. From the analysis of reflected light of various particulate matters according to different liquid additives, parameter studies were performed to investigate which experimental conditions can contribute to the enhanced selective sensing of particulate matters. Five different particulate matters such as household dust, soil, talc powder, gypsum powder and yellow pine tree pollen were utilized and observed to elucidate the relationship between property of particulate matter and detected light spectrum. Applicable approaches to assist current particle matter sensors and improve the selective sensing were suggested.
Ambeng, Hazairin Zubair, Ngakan Putu Oka dan Adi Tonggiroh
Authors: Ambeng Ambeng -
Published: October 2020

Community structure analysis is one way to describe and assess the environmental quality of an ecosystem. One part of environmental biotic that make up mangrove water ecosystems is bivalves. The mangrove area in the Pangkajene river estuary has become one of the bivalve habitats, which has been widely used by the community. Research on the bivalve community structure of the mangrove area in the Pangkajene river estuary was conducted in April - June 2019, which aims to get an overview and assess the environmental conditions of the mangrove area in the Pangkajene river estuary based on the bivalve community structure. The research place was divided into three stations, each station was divided into two sampling areas, and in each sampling area six sampling points were placed. Sampling was carried out using a 50 x 50 cm plot method. Community structure limits calculated include density, diversity index, uniformity, dominance, and dispersion, as well as measurement of water parameters including pH, Organic C, and substrate texture. The results showed that the composition of bivalve community types consisted of 19 species included in 12 families. The dominant type is Saccostrea sp. with a density of 15.11 ind / m2 (Cr 50.77%). The species diversity index value ranges from 0.91 - 1.91 with an average of 1.50, which indicates the level of diversity of bivalves is relatively low. The Bivalvia community uniformity index includes the unstable criteria and the level of dominance index includes the stable community criteria, with a uniform distribution pattern.
Prevalence of Intestinal Parasites amongst selected age groups within Okada, South –South Nigeria.
Authors: Izevbuwa Osazee Ekundayo , Akpoka Obhioze Augustine , Okafor-Elenwo Ebere Julein
Published: October 2020

This study was conducted to determine the prevalence of intestinal parasites from volunteered individuals in the study site. A total of 300 stool samples, comprising 150 females and 150 males were collected randomly from the study population in Ovia North-East Local Government Area in Edo State, aged between 1 and 60 years. The stool samples were aseptically collected and examined using both direct smear method and formol ether sedimentation techniques to determine the individual parasite load of the sampled population. The age group of 16-20 had the highest number of participants 102(34%) while the age group of 6-10, 51-55 and 56-60 had the least number of participants of 3(1%) respectively. Out of the 300 stool samples examined 87, (29%) were positive with intestinal parasites while 213(71%) were negative, not having any intestinal parasitic infection However the age group of 11-15(N=10) and 31-35(N=10) had the highest prevalence rate of 11.5%, while the lowest prevalence (1%) was found in individuals of ages 41-60 years. There was no intestinal parasites found among the individuals below11 years of age.. Of the 150 male candidates examined, 57 (65.5%) were infected with intestinal parasites. On the other hand, their female counterparts had a total prevalence of 34.5%. A total number of six parasitic species were isolated from the fecal specimens. These were Ascaris lumbricoides, Trichuris trichiura, Strongyloides stercolaris, Entamoeba coli, Hookworms and Entamoeba histolytica. Ascaris lumbricoides had the highest prevalence rate (12%), while Trichuris trichiura and Strongyloides stercolaris had the least prevalence rate (1%) respectively. The intestinal parasite infection and age were negatively correlated and there was a significant difference between the male and female infection rates (p<0.05).
Multifunctional Foaming Agents for Production Enhancement in Oil Wells: Field Test Results
Authors: Parra José Ernesto , Rosales Arias Fermín , Soto-Castruita Enrique , Jiménez de la Cruz Guillermo , Ramírez-Pérez Jorge Francisco , Cerón-Camacho Ricardo , Cisneros-Dévora Rodolfo , Servín-Nájera Ana Graciela , Zamudio-Rivera Luis Silvestre
Published: October 2020

We describe the first field applications of a new multifunctional foaming agent (MFA) for production enhancement in oil wells with gas lift. The tests were conducted in three wells with water cuts from 40 to 90%, depth (>5000 m), bottomhole temperature (150°C), and brine hardness and salinity up to 180,000 ppm and 310,000 ppm TDS, respectively. The MFA was coinjected with lift gas via the annulus and generated foam downhole as it mixed with reservoir fluids in the tubing. Tested MFA concentrations ranged from 160 to 750 ppm. The field tests demonstrated that the MFA was able to increase the oil production for a fixed gas lift injection volume. The MFA also enabled to reduce lift gas consumption, while maintaining or even increasing the original oil production.
Performance of Mattis dementia rating scale-Chinese Version in patients with mild cognitive impairment and Alzheimer's disease
Authors: Qian Shuxia , Chen Keliang , Guan Qiaobing , Guo Qihao
Published: October 2020

Background: To identify the applicability of the Chinese Version of Mattis Dementia Rating Scale (DRS-CV).Methods: The DRS-CV was administered to 483 participants, including 136 normal controls, 167 patients with mild cognition impairment (MCI), and 180 patients with Alzheimer’s disease (AD). Receiver Operating Characteristic (ROC) curve was used to evaluate the sensitivity and specificity of the scale.Results: The scores of DRS-CV were ranked in the order of NC >MCI > mild AD > moderate AD group. Memory was the sensitive function affected at a relatively earlier stage of AD. ROC curve analysis indicated the DRS-CV total score and memory subscale showed excellent sensitivity and specificity in the discrimination between MCI from mild AD and mild AD from moderate AD, but poor sensitivity and specificity in the discrimination between MCI and NC.Conclusion: The DRS-CV is useful to the early diagnosis and severity of AD, not to the early identification of MCI.
KPNA2 expression is a potential marker for differential diagnosis between osteosarcomas and other malignant bone tumor mimics
Authors: Jiang Lucen , Liu Jianghuan , Wei Qingzhu , Wang Yiyang
Published: October 2020

Background: Karyopherin α2 (KPNA2), a member of the karyopherin α family, has been studied in several cancers but has not yet been substantially investigated in malignant bone tumors. The purpose of the current study was to evaluate the KPNA2 expression level and its utility as a novel diagnostic biomarker in osteosarcomas and malignant bone tumor mimics, such as chondrosarcomas and Ewing sarcomas (ESs).Method: We investigated the expression of KPNA2 protein by immunohistochemistry on paraffin-embedded surgical specimens from 223 patients with malignant and benign bone tumors, including 81 osteosarcomas, 42 chondrosarcomas, 15 ESs, 28 osteoid osteomas, 20 osteochondromas and 37 chondroblastomas. Immunoreactivity was scored semiquantitatively based on staining extent and intensity.Results: Sixty-seven of 81 (82.7%) osteosarcoma, zero of 42 (0%) chondrosarcoma and one of 15 (6.7%) ES samples showed immunoreactivity for KPNA2. Negative KPNA2 expression was observed in all benign bone tumors. The expression of KPNA2 in osteosarcoma samples was much higher than that in chondrosarcoma and ES samples (P<0.001). The sensitivity and specificity of KPNA2 immunoexpression for detecting osteosarcoma were 82.7% and 100%, respectively. Several subtypes of osteosarcoma were analyzed, and immunostaining of KPNA2 was frequent in osteoblastic samples (90.9%), with 39 samples (70.9%) showing strong-intensity staining. KPNA2 positivity was observed in ten of 13 (76.9%) chondroblastic, two of 6 (33.3%) fibroblastic, three of 4 (75%) telangiectatic and two of 3 (66.7%) giant cell-rich osteosarcoma samples. The strongest intensity staining was observed in osteoblastic osteosarcoma.Conclusion: KPNA2 is frequently expressed in osteosarcomas, particularly in osteoblastic and chondroblastic tumors, but is rarely positive in chondrosarcomas and ESs. This feature may aid in distinguishing between osteosarcoma and other bone sarcoma mimics. This report supports KPNA2 as a novel marker for the diagnosis of osteosarcoma.
Factors associated with the Uptake of Immediate Postpartum Intrauterine Contraceptive Devices(PPIUCD) in Rwanda: A Mixed Methods Study
Authors: Kanakuze Chris Adrien , Dan Kaye K , Musabirema Priscilla , Pascal Nkubito , Mbalinda Scovia Nalugo
Published: October 2020

Background: Rwanda has a high unmet need for family planning which could be reduced by improving access to postpartum intrauterine contraceptives device (PPIUCD) insertion. The objective of the study was to assess the prevalence and factors associated with the uptake of PPIUCD among postpartum women in Muhima Hospital.Methods: A concurrent mixed-method study was used. Three hundred eight three (383) immediate postpartum mothers, and 10 health services providers were interviewed using a structured questionnaire and in-depth interviews respectively. Logistics regression was done to assess for factors associated with PPIUCD uptake and thematic analysis was used for qualitative data.Results: The prevalence for PPIUCD use was 28.1%, women who had spontaneous vaginal delivery were more likely to take up PPIUCD (Adjusted Odds Ratio (AOR) 2.623, 95%CI=2.017-6.507 compared to those who had cesarean section; women who received PPIUCD counselling during the antenatal period were more likely to use PPIUCD ((AOR 2.072, 95%CI=1.018-4.218) as compared to those who didn’t receive any form of counselling; mothers who received spouse approval were more likely to use PPIUCD (AOR 2.591,95%CI= 1.485-4.492); as compared to those who didn’t receive any spousal approval; women who had more than one child were more likely to use PPIUCD (AOR =2.265, 95%CI=1.472-3.163) as compared to prime gravida; Mothers with birth to pregnancy interval less than two years were more likely to use PPIUCD (AOR =2.123, CI =1.477-2.706) as compared to those who had birth to pregnancy interval more than 2 years. From the qualitative findings, health education of mothers and partners on PPIUCD, training of health care providers, and availability of supplies to provide PPIUCD influenced the use of PPIUCD. Conclusion: The acceptability to use for PPIUCD was high in this population. PPIUCD uptake was associated with normal birth, PPIUCD counselling, spousal approval, parity, birth interval, level of education. Health education of mothers and partners on PPIUCD, training of health providers, and availability of supplies to provide PPIUCD influenced uptake of PPIUCD.
Febrile infants without respiratory symptoms or sick contacts: Are chest radiographs or RSV/influenza testing indicated?
Authors: Ozcan Ali , Laskowski Evelyn , Sahai Shashi , Levasseur Kelly
Published: October 2020

Objectives: Serious bacterial infection rates in febrile infants <60 days are about 8-11%. Less than 1% of febrile infants with no respiratory symptoms will have pneumonia however, chest radiography (CXR) rates remain between 30-60%. Rapid Respiratory Syncytial Virus (RSV) and influenza (flu) testing is common, however, there is not enough data to determine if febrile infants without any respiratory symptoms should be tested. The goal of this study is to determine the rate of positive CXR and RSV/flu results in febrile infants with no respiratory symptoms and no sick contacts. Methods: Well-appearing febrile infants between 7-60 days of age who presented to the pediatric emergency department (PED) from September 1st, 2015 through October 30th, 2017 were enrolled. Demographic data, respiratory symptoms, CXR findings and RSV/flu results were collected. SAS statistical software was used for analysis. Results: 129 infants met enrollment criteria. Of the 129 infants, 58 (45.0%) had no respiratory symptoms and no sick contacts. Of these 58, 36 (62.1%) received a CXR and none of them had any abnormal findings, 48 (82.8%) had RSV/flu testing, no patients tested positive for RSV and only one patient tested positive for flu. Costs of CXR and RSV/flu testing for this cohort was $19,788. Conclusion: The absence of positive CXRs in this patient population reinforces the current recommendations that CXR is not indicated. The low incidence of RSV/flu indicate that routine testing may not be necessary in this population especially outside of the flu season. Reduced testing could decrease overall costs to the healthcare system as well as radiation exposure to this population.