bluuebunny/crossref_metadata_2025 huggingface dataset:
THE PRACTICE OF CONTINUOUS IMPROVEMENT BEHAVIOURS IN MANUFACTURING COMPANIES WITH ISO 9001
Authors:   University North, Croatia Department of logistics and sustainable mobility, Sesar Vesna , Hunjet Anica
Published: September 2021

Continuous improvement gained much attention in the literature as one of the principles in total quality management and practice under methodologies such as Lean or Six Sigma. Continuous improvement in organizations represents a comprehensive process that includes involvement of all people on all organizational levels to make improvements throughout the whole organization. Therefore, building and sustaining the organizational CI capability through practicing the CI behaviours leads to achieving better efficiency, effectiveness and business results of the organization. Also applying CI behaviours leads to change in organizational culture which is, in the long run, oriented toward making every day continuous improvements. The purpose of this paper is to present which CI behaviours can be developed in organization and measured according to the Bessant's evolutionary model of continuous improvement behaviour. Also, the goal of the research is to present based on the conducted research, the state of CI practice regarding adopted CI behaviours which will be presented as the development level of CI behaviours that researched manufacturing companies in Croatia with ISO 9001 certificate, have. Keywords: continuous improvement behaviours, kaizen, model
ACCOMMODATION AND FOOD SERVICES SUPPLY CHAINS: AN INPUT-OUTPUT METHODOLOGICAL FRAMEWORK
Authors:   Institute for Tourism, Zagreb, Croatia, Ivandić Neven
Published: September 2021

The ratio of direct tourism gross value added to internal tourism consumption varies substantially from country to country. The paper aims to analyze these differences stemming from the variation and structure of their supply chains. The analysis is based on a comparative analysis of the input-output tables of France, Italy, Spain and Croatia in 2005, 2010 and 2015 published by the OECD. The analysis is performed in three steps. In the first step, an analysis based on a technical coefficient matrix is made of the structure of accommodation and food service industries supply chains in four Mediterranean countries. The second step includes the calculation of the industry’s direct import dependence. The third step compares the effects of backward linkages of inputs. Results provide an insight into the factors that determine the different abilities of economies to generate added value and indicate the possibility of increasing the added value of tourism without increasing its physical volume. Keywords: Accommodation and food services, input-output tables, supply chain
IDENTITY FOCUSED ADAPTATION OF NEWCOMERS IN ORGANIZATIONS: RESOURSE FOR PERSONNEL MANAGEMENT
Authors:   National Research University, Moscow, Russia Higher School of Economics Faculty of Social Science School of Public Administration and Department of Psychology, Ivanova Natalia , Klimova Anna
Published: September 2021

The report addresses the issue of adaptation of newcomers in organizations. This problem is very important now in business and public organizations according to the problem of labor productivity, staff turnover, corporate culture etc. In spite of obvious importance of the adaptation in organization, the studies of this problem require new approaches and methods. Mechanisms are explored that help to retain the staff in organization and to create a desire to continue its activities in this organization. The research is implemented to the framework of the business-psychological approach (S Benton, N. Ivanova, theory of social identity (H. Tajfel, J.C. Turner), concepts of adaptation (T. Bazarov, N. Volkova etc.). Adaptation of newcomers is considered as a natural stage of professional and social self-determination of the individual, as overcoming the identity crisis and identity forming process. In the course of adaptation, an identity is formed that is adequate in relation to the new social roles and goals of activity. The purpose of the study: to develop the identity focused adaptation model, to test the role of this model in the work with newcomers in organization. Methodology: questionnaire (N= 109), Job Satisfaction Survey (N=15), case study in organizations. Results: The role of information and psychological support of a novice from the manager, mentor and team while including a specialist in joint activities is revealed. The directions of improving the system of adaptation of newcomers in the organization are highlighted. An identity focused adaptation model has been developed, which includes the following components: A) Preliminary information to newcomers: preparatory briefing about the company; detailed briefing about the company's rules and regulations. B) Information about newcomers to colleagues: about the new employee, his workplace, the tasks of his adaptation, the appointment of a mentor. C) Communications of the mentor: checking the workplace, the initial conversation, monitoring the problems and successes, the employee's initiation into the company's affairs. D) Communications of the manager: aimed at reducing the uncertainty of the newcomer in the first days of work. E) Communication of newcomers: questions, feedback, ideas, doubts, wishes. Results of this research can be useful for management, counseling and coaching for development of newcomer’s identity, loyalty, and performance. Keywords: business psychology, identity focused adaptation model, personnel management, loyalty, adaptation of personnel, social identity, strategy of communication.
ECONOMIES OF MANGO CULTIVATION IN A WHOLE-FARM APPROACH FOR SMALLHOLDER FARMERS: A CASE STUDY FROM INDIA
Authors:   Department of economics, Periyar University, Salem, Tamil Nadu, India, . Mehjabeen , A Saravanadurai ,   Department of economics, Periyar University, Salem, Tamil Nadu, India
Published: September 2021

This case study is about farming systems followed by small mango growers of a Srinivaspur sub-district of Kolar district in Karnataka, India. Over the years, the size of landholdings decreased and suitability has become an issue. The integrated farming system is mostly desired but, the kind of cropping pattern which would bring profitability and sustainability for smallholding farmers under dryland conditions has not been extensively explored. This research analyzes and explains the economies of scale and scope for the smallholder mango growers both in irrigated and rain-fed conditions. The data covers the period from April 2016 to March 2017. Total, 320 smallholder mango growers from Srinivaspur; a sub-district of Kolar in India were randomly interviewed in person, using a structured pre-tested interview schedule. Suitable analytical techniques were used with the data obtained. Further, the results of the study suggested the optimum farming pattern to enhance the income and bring more sustainability to the farmers both in rain-fed and irrigated conditions.
Demographic and KAP determinants of COVID-19 vaccine hesitancy and vaccine refusal: a cross-sectional study in Indian population
Authors: Gupta Meghna , Goyal Rohit , Aggarwal Shruti , Singh Mansunderbir , Gupta Vitull K. , Garg Nikita
Published: September 2021

Background: Recent rise in vaccine non-acceptance is a threat to global health, especially with the ongoing   COVID-19 pandemic. Examining the intentions of the Indian population towards the COVID-19 vaccine and the determinants of vaccine hesitancy and vaccine refusal is of utmost importance.Methods: We conducted a cross-sectional web-based anonymous survey, using pre-validated questionnaires. Demographic and knowledge, attitude, and practice characteristics were collected, and a binary logistic regression was applied to analyse the association between these characteristics and the participants’ intention to for the COVID-19 vaccine. Reasons for vaccine non-acceptance were then determined using a pre-validated vaccine hesitancy questionnaire.Results: Out of the 1172 non-vaccinated participants, 190 (16.2%) refused vaccination, and 219 (18.6%) were hesitant. Adequate knowledge about the COVID-19 disease, made people less likely to be hesitant for vaccination (OR=0.39; 95% CI=0.27-0.57), and less likely to refuse it (OR=0.41; 95% CI=0.27-0.61). Females had a higher tendency to refuse the vaccination (OR=1.47; 95% CI=1.02-2.14), or to be hesitant for it (OR=1.80; 95% CI=1.29-2.52). Social media played an important role in decreasing vaccination refusal (OR=0.40; 95% CI=0.22-0.73), when compared to evidence-based literature.Conclusions: Knowledge about the COVID-19 disease can help people make a more informed decision towards vaccination, and social media can be utilised as a medium to address the gaps in knowledge of the Indian population.
Utilization Waste Brine Water Separator for Binary Electric Energy Conversion in Geothermal Wells
Authors: Herianto
Published: September 2021

Nowadays, geothermal is one of the most environmentally friendly energy that can replace the role of fossils energy by converting steam to electricity. Brine is one of the by-products of the production of geothermal wells that are generally not used or simply re-injected. In fact, brine can be converted into electricity using the binary cycle process. In binary cycle, brine from separator is used as a heater of working fluid and transform it into a vapor phase. The vapor will be used to turn turbines and generators to produce electricity. The working fluid selection in accordance with the heating fluid temperature becomes important because it results in optimization of the thermodynamic cycle. The temperature of the wellhead in the geothermal field will decrease 3% per year and reducing the heating fluid temperature in heat exchanger. So, in this paper intends to utilizes brine to heat the heat exchanger by using iso-butane, n-pentane, and iso-pentane because its critical temperature can be stable at 193℃ wellhead temperatures. From the results of predictions from brain 2 production well for 17 years with iso-butane in this binary cycle planning, can utilize waste brine water separator to converse electric energy to produce 4 MWh electricity.
Mapeamento e redes sociais dos museus de Curitiba: algumas reflexões
Authors: Ferreira Gabriela , Silveira Camila
Published: September 2021

A presente pesquisa teve como objetivo mapear os museus de Curitiba/PR, bem como investigar suas atuações em sites oficiais e nas redes sociais Facebook e Instagram. O estudo é de natureza qualitativa, em que utilizamos a Análise Documental como metodologia. Os dados foram constituídos por meio do Guia dos Museus Brasileiros do Instituto Brasileiro de Museus e do site da Fundação Cultural de Curitiba. Os resultados apontaram que os museus curitibanos, em geral, estão em funcionamento, possuem administração pública e tem perfis diversos com relação ao ano de fundação e tipologia. Na Internet, metade dos museus não possui qualquer atividade e somente 13% dos espaços museais contam com uma atuação efetiva nas mídias sociais. Quanto ao mapeamento, notamos que todos os museus residem na porção norte da cidade, existindo um aglomerado na região central, onde se localizam os centros econômico e histórico. Concluímos que os museus curitibanos, em sua maioria, pouco promovem a inclusão social por meio da inclusão cultural, tomando como referência as fontes de informação desta pesquisa, considerando a escassez de informações e o distanciamento físico com a maior parte da população.
Lia de Itamaracá – Patrimônio vivo de Pernambuco
Authors: Paulino Francys Alves , Sossai Fernando Cesar
Published: September 2021

Em uma iniciativa inédita no Brasil, o estado de Pernambuco, por meio do Decreto Nº 27.503, de 27 de dezembro de 2004, regulamentou a Lei nº 12.196, de 02 de maio de 2002, assegurando aos representantes do “saber-fazer” cultural dessa região a continuidade de adquirir e replicar seus conhecimento, tornando-se o primeiro estado a instituir, no âmbito da Administração Pública, o Registro do Patrimônio Vivo, garantido uma pensão vitalícia mensal aos representantes da cultura popular do Pernambuco. Assim, Lia de Itamaracá, nascida como Maria Madalena Correia do Nascimento, foi reconhecida, em 2005, como Patrimônio Vivo de Pernambuco. À sua maneira, este artigo procura contribuir à compreensão de como se deu esse processo de reconhecimento no âmbito da história de vida de Lia de Itamaracá.
Dossiê “Jornadas Mercosul: Memória, Ambiente e Patrimônio”
Authors: Bem Judite Sanson de , Cademartori Cristina Vargas
Published: September 2021

O Jornadas Mercosul: Memória, Ambiente e Patrimônio é um evento bianual que, desde 2010, busca divulgar, entre pesquisadores, professores e discentes, a relevância da Memória Social e seus entrelaçamentos. Na edição de 2020, contou com participantes de 11 estados brasileiros, pesquisadores estrangeiros, mais de 130 comunicações, Mesas de Debates, Palestras e outros fóruns. Foram três dias de intensos e profícuos diálogos em todas as áreas relacionadas ao Patrimônio, ao Meio Ambiente e à Memória.
Технологические аспекты интраовариальной аутоплазмотерапии (PRP)
Authors: Гаспаров А.С. , Дубинская Е.Д. , Романова Н.В. , Рязанова И.А. , Дутов А.А.
Published: September 2021

В данном исследовании представлены результаты интраовариальной аутоплазмотерапии (PRP – platelet rich plasma) у 80 пациенток с низким овариальным резервом и «бедным ответом» в программах ЭКО и с неэффективными попытками ЭКО в анамнезе. В 1 группу было включено 40 женщин, которым проводилась интраовариальная PRP c использованием навигационной технологии стоп-точек, во 2 группу - 40 женщин, которым применяли PRP без использования навигационной технологии стоп-точек. Полученные данные убедительно демонстрируют, что PRP с использованием навигационной технологии стоп-точек лучше влияет на активацию функции яичников (увеличение антимюллерова гормона (АМГ), увеличение количества антральных фолликулов (КАФ), увеличение эстрадиола, снижение фолликулостимулирующего гормона (ФСГ)), по сравнению с PRP без использования навигационной технологии стоп-точек.
Адгезивные системы и их роль в современной стоматологии
Authors: Сангонова Н.Д. , Фролова К.Е. , Фролова В.В.
Published: September 2021

В данной статье рассмотрены состав и свойства, техника использования адгезивных систем, применяемых в стоматологии. Освещены достоинства и недостатки адгезивных систем разных поколений, а также нюансы работы с современными адгезивными системами.
Оценка эффективности премедикации препаратами бензодиазепинового ряда у пациентов с артериальной гипертензией
Authors: Соболев В.В. , Пылина К.Э. , Цветкова М.А. , Забиров Д.Р.
Published: September 2021

Премедикадией является непосредственная медикаментозная подготовка пациента к проводимому анестезиологическому обеспечению хирургических вмешательств. Она преследует несколько важных задач. Прежде всего, это снижение уровня эмоционального стресса со снижением реакции как на внешние, так и на внутренние раздражители, поддержание нейровегетативной стабильности с уменьшением секреции желез, создание необходимых для безопасности анестезии условий, профилактика возможных аллергических реакций на применение во время проведения анестезиологического пособия медикаментов и инфузионных сред. В статье проведен анализ эффективности премедикации у больных с артериальной гипертензией, показана взаимосвязь проводимой премедикации с получаемой пациентами антигипертензивной терапией.
Оценка выраженности послеоперационного воспаления после операций на лимфокольце глотки у детей
Authors: Топоркова С.Ю.
Published: September 2021

Цель исследования: изучение динамики цитокинового профиля в слюне у детей с гипертрофией лимфокольца глотки до и после аденотомии (1 группа, 17 больных) и аденотонзиллотомии (2 группа, 25 больных). При сравнении исходных результатов между группами выявлены следующие закономерности: содержания IL-6 было повышено у детей обеих групп по сравнению с контрольной. В послеоперационном периоде содержание IL-1β достоверно увеличилось у детей после аденотонзиллотомии, а содержание IL-6 возросло в обеих группах.
Сетевое взаимодействие в работе учреждений дополнительного образования г. Саратова
Authors: Сайганова Е.В. , Тимофеева А.В.
Published: September 2021

Статья посвящена анализу сетевого взаимодействия в работе муниципальных учреждений дополнительного образования г. Саратова, о проводимых ими мероприятиях в условиях пандемии.
Трансформация взглядов Фридриха Мейнеке: от монархиста к республиканцу
Authors: Илларионова А.А.
Published: September 2021

Целью данной статьи является анализ интеллектуальной деятельности немецкого историка Фридриха Мейнеке (1862-1954) во время Первой мировой войны, трансформации его взглядов и мировоззрения в целом. Научная новизна исследования заключается в том, что Фридрих Мейнеке и его наследие достаточно слабо изучены: зарубежные исследователи концентрировались на его работах после Второй мировой войны и его историко-философских представлениях. В рамках отечественной историографии личности Ф. Мейнеке также уделялось внимание как методологу истории и в связи с его осмыслением понятия историзма, и большинство работ не выходят за рамки философских дискуссий. В связи с этим представляет большой исследовательский интерес проанализировать политические работы Ф. Мейнеке 1914-1918 гг., его мемуары и эпистолярное наследие. В результате исследования делается вывод, что после «ментального краха» и ряда поражений Германской империи на фронтах Первой мировой войны пропрусски воспитанный приверженец монархического строя выступил за демократизацию и переустройство Германии в федеративную республику.
Субъективность и идентичность современного человека: некоторые аспекты
Authors: Жижилева Л.И.
Published: September 2021

В настоящее время наблюдается трансформация субъекта, в том числе таких его аспектов как субъективность и идентичность. В общественных науках и философии нет единства их понимания. Для решения сегодняшних задач предлагается обратиться к проблемам декартова субъекта, в частности аспектам равновесия, «заботы о себе», которые не получили в нем развития.
Особенности структурно-функциональной модели процесса познания
Authors: Кузьмин М.В.
Published: September 2021

Определена тенденция в развитии научной методологии на современном этапе ― системные представления, системный подход, при котором материальные объекты представляются в виде многоуровневых иерархических систем. Разработана адекватная этому представлению объективной реальности структурно-функциональная модель процесса познания. В ней на каждом уровне указано множество объектов Еi и множество закономерностей φi , действующих на них. Модель выполнена в виде, аналогичном цепной (непрерывной) дроби. Рассмотрены примеры еѐ применения в философии.
География рекреационного туризма в регионах Приволжского федерального округа
Authors: Сельдушова Д.Д. , Нехаева Н.Е.
Published: September 2021

В статье рассматриваются вопросы географии рекреационного туризма в регионах Приволжского федерального округа с точки зрения сезонности.
Устройство выборки и хранения
Authors: Бондарь С.Н. , Макитрюк С.Б.
Published: September 2021

В статье рассматривается схемное решение построения устройства для формирования выборки мгновенного значения напряжения с улучшенными параметрами.
Аналого-цифровые преобразователи
Authors: Бутков А.А. , Бондарь С.Н.
Published: September 2021

В статье рассматриваются принципы работы аналого-цифровых преобразователей, описываются их основные характеристики.
К вопросу о необходимости совершенствования нормирования в строительстве
Authors: Панченко Н.М.
Published: September 2021

Начиная с 60-х годов прошлого века в сфере строительства все трудоѐмкие процессы механизированы, комплексно механизированы и частично автоматизированы, но эффективность строительного производства при этом не всегда максимальна. Любой комплексный процесс в строительстве сложен и состоит из отдельных элементов, технологически связанных между собой. Если происходит изменение в одной из множества операций, составляющих процесс, то этоприводит к изменению производительности комплексного процесса в целом. За последние десятилетия было создано немало разработок в области совершенствования нормирования в строительстве, но все они не позволяею достоверно оценивать фактическое состояние функционирование технологических процессов. В результате получаем отклонения реальных сроков строительства от запланированных. Для того, чтобы расчѐтные результаты были максимально приближены к реальным, необходимо учитывать совместное влияние технологии, людей и состояния применяемой техники на производительность строительных процессов. А оценив данное влияние, внести изменения в методологию нормирования в строительстве.
Значение плана ГОЭЛРО в развитии электроэнергетики в России
Authors: Колистратов М.В. , Малкина Т.О.
Published: September 2021

В данной статье исследуется значение плана государственной электрификации России в развитии электроэнергетики в нашей стране. Выявлены основные факторы успеха данного проекта как комплекса мероприятий по возрождению национальной экономики и обеспечению всех ее отраслей электричеством с помощью ресурсного потенциала Советского Союза.
Системный анализ взаимосвязи инфляционных процессов и ключевой ставки
Authors: Полякова И.С.
Published: September 2021

В статье изучена взаимосвязь ключевой ставки в России и инфляции – ключевая ставка «привязана», «следует» за индексом инфляции. Но иногда коэффициент инфляции является «раздутым», «ложным», во многом определенным психологией производителей товаров и услуг, а не реальными рыночными процессами. Именно поэтому необходимо «отвязать» ключевую ставку от коэффициента инфляции, а не «слепо» крутить ее вверх за ростом цен.
Взаимосвязь вторичной занятости студенческой молодежи и деятельности малого бизнеса
Authors: Денисевич Е.И. , Плаксин Р.В.
Published: September 2021

Малый бизнес предоставляет возможности для разных слоев населения и для других организаций, а также предоставляет места сбора для различных сообществ. Хотя управление малым бизнесом подразумевает больший риск, чем работа в крупной, устоявшейся компании, выгоды являются как количественными, так и качественными, включая широкое процветание и сеть симбиотических отношений. Актуальность темы исследования обусловлена объективно значимой ролью предпринимательства в социально ориентированной рыночной экономике. Становление рыночных отношений в Российской Федерации является очень сложным процессом. В этих условиях совокупность предприятий представляет тот сектор национального хозяйства, развитие которого может значительно способствовать не только преодолению негативных тенденций в экономике, но и активизации дальнейшей динамики и качества экономического роста.
Перспективы развития финансовых экосистем банковских учреждений в России
Authors: Нечипоренко Е.А. , Башкова К.А. , Павлик В.А.
Published: September 2021

В статье рассмотрено состояние финансовых экосистем банковских учреждений в России. Затрагивается проблема неспособности финансирования и развитие экосистем банками. Представлена основанная информация касаемо финансовых экосистем в банковской сфере. Выявлена основная цель создания финансовых экосистем в банковском учреждении. Рассмотрены основные примеры финансовых экосистем в отечественной практике. Влияние, оказываемое на экономику финансовыми экосистемами, плюсы и минусы их развития. Показатели прибыли от деятельности в сфере развития экосистем.
Анализ тенденций в сельскохозяйственной отрасли России и перспектив ее развития
Authors: Умнов В.А.
Published: September 2021

Рассматриваются основные тенденции развития сельскохозяйственной отрасли России за период с 2005 по 2018 гг. на основе официальных данных Росстат. Проведен анализ изменения производства в отрасли в целом, в том числе с учетом ценовых факторов, а также отдельно по некоторым важным видам продукции. Исследованы тенденции изменения таких важных показателей, как доля добавленной стоимости в продукции, численности занятых и рентабельности отрасли.
Оценка основных направлений инновационного развития и инновационной деятельности Воронежской области в современных условиях
Authors: Шенцева Л.Н. , Тимофеева Е.М.
Published: September 2021

В работе дается оценка основных направлений и достигнутого уровня инновационного развития Воронежской области, выявлены основные проблемы формирования инновационной системы в регионе.
Трансформация бизнес-процессов: предпосылки и вероятная траектория развития организации
Authors: Пригульный А.Г.
Published: September 2021

Понятие трансформация бизнес-процессов связано с преобразованием бизнес деятельности посредством кардинального изменения бизнес-процессов организации. Это происходит вследствие воздействия на компанию разнообразных факторов, как внешних, так и внутренних. При этом одним из самых важных факторов в последние годы является цифровизация и активное внедрение информационных технологий (мобильных, облачных, социальных сетей, искусственного интеллекта и др.) во все направления деятельности организаций. Благодаря информационным технологиям происходят изменения и в формировании клиентам ценностного предложения и в способах взаимодействия компании и клиентов. В статье рассмотрены подходы и предпосылки реализации проектов трансформации бизнес-процессов в организации.
Коммерциализация интеллектуальной собственности вуза в области цифровой трансформации электроэнергетики
Authors: Чечурина М.Н. , Артюх К.Л.
Published: September 2021

Статья посвящена коммерциализации интеллектуальной собственности вуза как результата интеллектуальной деятельности (РИД), использующего технологию предиктивной аналитики, в области цифровой трансформации электроэнергетики.
Фразеологические единицы с компонентом-колоронимом в англоязычных песенных текстах
Authors: Баринова Д.В. , Нестерова А.В. , Гришина Н.С. , Зубарева Е.Н. , Гринева М.С.
Published: September 2021

В статье рассматриваются англоязычные фразеологические единицы с компонентом-колоронимом. Определяется понятие фразеологизма, представлены различные классификации фразеологизмов. Выявлены основные функциональносемантические и морфологические типы фразеологизмов с компонентом-колоронимом, содержащиеся в 37 песенных текстах современных англоязычных исполнителей. Установлено, что наиболее частотными фразеологизмами с компонентом-колоронимом являются именные и глагольные фразеологические сращения и фразеологические единства, содержащие артропоморфную или артефактную метафоры. Наиболее частотные колоронимы-компоненты фразеологизмов в текстах песен – WHITE и BLUE.
О некоторых вокалических явлениях в дракинском кусте мокшанских говоров
Authors: Иванова Н.В.
Published: September 2021

Настоящая работа представляет собой попытку дать краткое описание фонетических особенностей говоров сел Старое Дракино, Новое Дракино, Алькино, п. Красная Поляна Ковылкинского района Республики Мордовия, условно объединенных нами под общим названием ―дракинский куст говоров‖, находящихся на расстоянии 28 – 30 км от города Ковылкино, в близком окружении русских сел: Казенный Майдан, Васильевка, Рыськино, Первомайск, Красный Шадым. Свою задачу мы ограничиваем описанием тех особенностей, которые затрагивают область вокализма.
Recurrent Schowannoma With Extensive Xanthomatous Changes: A Case Report
Authors: Moradi Tabriz Hedieh , Nazar Elham , Eftekhar Javadi Arezoo , Bakhshi Niousha
Published: September 2021

Schwannoma is one of the most common benign intracranial tumors, which originates from the Schwann cells of neural structures in the upper part of the vestibular branch of the eighth cranial nerve. This report describes a 64-year-old woman with headache and vertigo who had a past surgical history of acoustic schwannoma about 10 years ago. The patient underwent excisional surgery. Histological examinations revealed schwannoma with extensive xanthomatous changes. Immunohistochemistry staining confirmed the diagnosis. Base on the diagnosis, the patient received no more treatment. After 6 months of close follow-up examinations, no recurrence and complication were observed. Schwannoma could be seen with a vast variety of histologic changes. Recurrence of Schownnoma is uncommon in patients without neurofibromatosis, but it should be considered in a proper clinical context.
Effectiveness of Cognitive-behavioral Play Therapy on Improving Anxiety and Aggression Disorders in a Child With ADHD: A Case Study
Authors: Hassani Zahra , Hosseinpour Fatemeh , Mirshoja Mina Sadat , Boozhabadi Abolfazl
Published: September 2021

This study aimed to assess the effects of cognitive-behavioral play therapy on anxiety and aggression in children with attention-deficit hyperactivity disorder (ADHD) by reporting a 7-year-old boy with ADHD inattentive type diagnosed by a psychiatrist. According to the interview, it was observed that the child was physically abused by the father. The chief complaint of the patient’s family was the symptoms of aggression, anxiety disorder, and urinary incontinence. We used the trauma system therapy model, which is used for children and adolescents who have had traumatic experiences and problems with emotional and behavioral modifications. The intervention was provided in 8 sessions for 2 days a week and lasted 45 minutes each. The child was evaluated using the Aggression Scale for Preschoolers and Preschool Anxiety Scale. The results of this study showed that cognitive behavior play therapy can reduce anxiety and aggression in ADHD children who are physically abused.
Single-Channel Selection for Detecting Steady-State Visual Evoked Potentials in a Brain-Computer Interface Speller
Authors: Saffari Farzad , Khadem Ali
Published: September 2021

Purpose: Brain-Computer Interface (BCI) provides a secondary communication pathway for patients with neuromuscular diseases such as amyotrophic lateral sclerosis (ALS) or brainstem stroke in which they are almost incapacitated to move or talk. BCI enacts neural oscillations to generate a command signal for machines to operate desired tasks instead of patients. Steady-State Visual Evoked Potential (SSVEP) is the brain response to a visual stimulus, with the same frequency as its eliciting signal (or its harmonics), that has been widely used in BCI environments. In order to provide a more convenient situation for BCI users, we aim to find the best single-channel EEG, which results in the highest accuracy for detecting SSVEP.
Materials and Methods: We developed a Deep Convolutional Neural Network with single-channel EEG as input to classify a 40-class SSVEP; each class represents a stimulus, which has been acquired from 35 subjects. We used 3.5 s windows of the data (Trials of 3.5 seconds length for each class) to train our model and leave-one-subject-out cross-validation for the testing.
Results: The proposed method resulted in the average classification accuracy of 74.30%±20.85 and Information Transfer Rate (ITR) of 57.51 bpm which outperforms the previous single-channel SSVEP BCIs in terms of ITR. Also, the O1 channel achieved the best performance criteria among the channels in the occipital and parietal lobes, which seems reasonable according to previous researches for finding the location of neurons, responsible for visual tasks in the brain.
Conclusion: In this study, we dedicated our efforts to reduce the number of EEG channels to a single channel while proposing a deep learning strategy for an SSVEP-based BCI speller to make it more feasible for patients whose lives are dependent on such systems. The overall results, although not ideal, open a new promising window toward a feasible BCI system.
Semi-Automated Glioblastoma Tumor Detection based on Different Classifiers using Magnetic Resonance Spectroscopy
Authors: Faramarzi Ayob , Loghmani Nazila , Moghadam Roqaie , Allahverdy Armin , Siyah Mansoory Meysam
Published: September 2021

Purpose: Glioblastoma Multiform (GBM) is one of the most common and deadly malignant brain tumors. Surgery is the primary treatment, and careful surgery can minimize recurrence odds. Magnetic Resonance Imaging (MRI) imaging with Magnetic Resonance Spectroscopy (MRS) is used to diagnose various types of tumors in the Central Nervous System (CNS). In this study, several classification methods were used to separate tumor and healthy tissue.
Materials and Methods: This study examined the MRI and MRS results of seven people enrolled in this study in 2018. The data was obtained with a prescription from a neurologist and neurosurgeon. Choline (Cho) and N-Acetylaspartate (NAA) metabolite signals were selected as the reference signal after preprocessing and removing the water signal. With the support of 3 radiologists, each tumor and healthy vesicles were identified for every patient. Then, tumor and healthy voxels were separated based on Multilayer Perceptron (MLP), linear Support Vector Machine (SVM), Gaussian SVM, and Fuzzy system using the obtained values and four different methods.
Results: Data extracted from Cho and NAA metabolites were fed into MLP, linear SVM, Gaussian and Fuzzy SVM as input, and the amounts of accuracy, sensitivity, and specificity were determined for each method. The maximum accuracy for training mode and test mode was equal to 89.7% and 87%, respectively, specific to classification using Gaussian SVM. The results also showed that the classification accuracy can be significantly increased by increasing the number of fuzzy membership functions from 2 to 6.
Conclusion: The results of this study suggested that a more complex classification system, such as SVM with a Gaussian kernel and fuzzy system can be more efficient and reliable when it comes to separating tumor tissue from healthy tissues from MRS data.
A Monte Carlo Study on Dose Enhancement in the Presence of Nanoparticles by Photon Source: A Comparison between Various Concentration and Material of Nanoparticles
Authors: Kazemzadeh Arezoo , Moradi Habiballah
Published: September 2021

Purpose: Recently, the application of high atomic number nanoparticles is suggested in the field of radiotherapy to improve physical dose enhancement and hence treatment efficiency. Several factors such as concentration and material of nanoparticles and energy of beam define the amount of dose enhancement in the target in the presence of nanoparticles.
Materials and Methods: In this approach, a spherical cell was simulated through the Geant4 Monte Carlo toolkit which contained a nucleus and nanoparticles distributed through the cell. To investigate the effect of the concentration of nanoparticles on the deposited dose, it ranged from 3 mg/g to 30 mg/g for different materials like gold, silver, gadolinium, and platinum. Also, various mono-energetic photon beams included low and high energy sources were applied.
Results: The results proved that as the concentration increased, the Dose Enhancement Factor (DEF) enlarged. Overall, almost for all energy and material that were used in this study, the maximum of DEF values occurred in the concentration of 30 mg/g. Moreover, lower energy sources presented higher DEF compared to other sources. The results indicated that the highest amount of DEF transpired for 35 keV photon beams equal to 14.67. Also, the K-edge energy of each material affects DEF values.
Conclusion: To obtain a better outcome in the use of nanoparticles in combination with radiotherapy, a higher concentration of nanoparticles and low-energy photons should be considered to optimize the DEF and thus the treatment ratio.
The Relationship Between Folate, Vitamin B12 and Gestational Diabetes Mellitus with Proposed Mechanisms and Foetal Implications
Authors: Maher Angeline , Sobczyńska-Malefora Agata
Published: September 2021

The incidence of gestational diabetes mellitus (GDM) is rising, which warrants attention due to the associated complications during pregnancy and in the long term for both mother and offspring. Studies have suggested a relationship between maternal folate (vitamin B9) and vitamin B12 status and GDM risk. Seemingly the most problematic scenario occurs when there is B-vitamin imbalance, with high folate and low vitamin B12. This nutritional state can occur in vitamin B12 deficient women who exceed the recommended folic acid supplementation. However, the pathological mechanisms behind this relationship are currently unclear and are explored in this review article. A high folate/low B12 can lead to a functional folate deficiency through the methyl-trap phenomenon, impairing re-methylation of homocysteine and regeneration of folates for DNA synthesis and repair. Consequently elevated homocysteine concentration leads to endothelial dysfunction and oxidative stress. Vitamin B12 deficiency also leads to an impairment of the conversion of methylmalonyl-CoA to succinyl-CoA, which has been associated with insulin resistance. Insulin resistance is thought to contribute to the etiology of GDM. More studies are needed to confirm the impact of these and other mechanisms on disease development. However, it highlights a potential avenue for GDM risk modification through a vitamin B12 supplement and improvement of maternal metabolic health.
Estimation Methods for Infertility Treatment Success: Comparison of Four Methods
Authors: Zarinara Alireza , Kamali Koorosh , Akhondi Mohammad Mahdi
Published: September 2021

Objective: To analyze and compare four methods for estimating the chance of treatment success in infertile couples.
Materials and methods: In a retrospective cohort study, information on demographic and clinical features, including age, body mass index (BMI), duration of infertility, semen analysis, previous history of treatment and clinical examination of infertile couples were analyzed. Treatment success (childbearing) was calculated with four methods as live birth ratio, conditional probability and survival analysis (life table and Kaplan-Meyer method) and results are compared.
Results: The fertility ratio for the first treatment cycle was 29.72% which decreased to 23.13% by total treatment cycles. The success rate was 75.4%. With conditional probability calculation at the end of the five treatment cycles. With the life table method in a five-year period, the probability for live birth was 78% and by Kaplan-Meyer method 73.1% and the median of treatment time was 562 days.
Conclusion: Calculation of infertility treatment success rate by only simple live birth ratio of childbearing couples is associated with underestimation. Using the conditional probability method reduces that underestimation, but it is not considered the censored cases in the treatments. It seems life table (as a proxy of survival analysis) presents the closest estimation to clinical facts with considering the repetition of the treatment cycle and the duration of treatment.
Affecting Factors of Parturient Women’s Privacy Preservation in The Maternity Ward: A Qualitative Study
Authors: Valizadeh Farzaneh , Heshmat Farahnaz , Mohammadi Solmaz , Motaghi Zahra
Published: September 2021

Objective: Different factors have an important role in the positive and negative childbirth experiences of the mothers. The parturient mother’s privacy preservation is one of the factors for increasing the mothers’ satisfaction consistent with natural childbirth. Hence, this study aimed to investigate the factors affecting the parturient mother’s privacy preservation.
Materials and methods: Content analysis was used in this qualitative study that is based on the semi structured individual interviews with women who had experienced natural vaginal delivery, midwives, and the specialist in a maternity ward from 2018 to 2021 in Shahroud, Iran. The collected data were analyzed simultaneously with the sampling procedure using a five-step qualitative content analysis method. To ensure the robustness of the data, Lincoln and Guba's four criteria (credibility, dependability, confirmability, and transferability) were used.
Results: The findings of the study with 40 participants resulted in the extraction of 28 codes, 9 subcategories, and 2 main categories entitled extra-and intra personal factors affecting the mother’s privacy.
Conclusion: To foster the mother’s awareness of her rights and privacy during pregnancy and delivery, continuous education, monitoring, and evaluating both the students and the staff to respect preserving the mother’s privacy is necessary to develop an instrument to measure the preservation of the mother’s privacy in the maternity ward.
Arteriovenous Malformation Complicating Cesarean Scar Pregnancy: A Rare case of Vaginal Bleeding Managed Successfully by Uterine Artery Embolization
Authors: Jha Sangam , Singh Akanksha
Published: September 2021

Objective: Arteriovenous malformation (AVM) can occur in cesarean scar ectopic pregnancy. The presence of retained product of conception can pose a diagnostic dilemma and clinical presentation could be similar.
Case report: A 27 year old female presented with continuous vaginal bleeding for two and half months following dilatation and evacuation (D&E) done for cesarean scar pregnancy (CSP) of 10 weeks 4days period of gestation. Sonography with color Doppler revealed dilated tortuous vessels around the mass in lower uterine segment suggesting CSP with AVM. Digital subtraction angiography confirmed the diagnosis. Bilateral uterine artery embolization achieved complete devascularisation as confirmed on post intervention angiogram. Patient became symptom free since then.
Conclusion: Uterine artery embolization is an effective mode of treatment of AVM complicating CSP if future fertility is desired.
Adverse occupational events and their impact on the centrality of work: A longitudinal study
Authors: Sharabi Moshe , Abu-Hasan Nabwani Ola , Shahor Tal , Simonovich Javier
Published: September 2021

Purpose: The purpose of this study is to examine the changes in work centrality of individuals who experienced meaningful adverse occupational events (dismissal from the workplace, prolonged unemployment, and retirement), as compared to employees who did not experience such events over 12 years.

Methodology: By implementing a fixed-sample panel /longitudinal research,12 years after conducting the Meaning of Work questioner, 411 individuals were located and re-conducted.  The respondents were asked about life and work events they had experienced between the first and second time. The data was analysed by regular and multivariate analysis of variance.

Main Findings: The work centrality of individuals who experienced prolonged unemployment did not change, while it increased among those who did not experience these events. Experiencing dismissal from work increased work centrality. Unexpectedly, work centrality continues to increase among individuals after retirement. 

Applications: There are several suggestions for the social and welfare and policymakers regarding adverse occupational events and the impact these policies may have on the magnitude of these events on work centrality.

Novelty/Originality: This is a unique longitudinal study over twelve years, that compared the change in work centrality among individuals who did and did not experience adverse occupational events.
Equilibrium and oscillations of liquid fuel free surface in coaxial-cylindrical vessels under microgravity conditions
Authors: Zhaokai Y. , Temnov A.N.
Published: September 2021

In the absence of significant mass forces, the behavior of liquid fuel under microgravity conditions is determined by surface tension forces, which are intermolecular forces at the interface of two phases. The paper posed and solved the problem of equilibrium and small oscillations of an ideal liquid under microgravity conditions, and also quantified the influence of various parameters: the contact angle α0, the Bond number, the ratio of the radii of the inner and outer walls of the vessel and the depth of the liquid. For the coaxial-cylindrical vessels, there were obtained expressions in the form of a Bessel series for the potential of the fluid velocities and the free surface displacement field. The study relies on the analytical and experimental data available in the literature and proves the reliability of the developed numerical algorithm. Findings of research show that for and r, with the physical state of the wetted surface being unchanged, the shape of the free surface tends to be flat and the contact angle has little effect on the intrinsic vibration frequency of the free surface of the liquid. The results obtained can be used to solve problems of determining the hydrodynamic characteristics of the movement of liquid fuel in outer space.
The concept of the auxiliary propulsion system of the III stage of the Soyuz launch vehicle
Authors: Gorokhov V.D. , Fomin V.M. , Golubyatnik V.V. , Scheblykin D.A.
Published: September 2021

The paper introduces a concept of creating an auxiliary propulsion system for the III stage of the Soyuz launch vehicle. The concept is aimed at reducing the cost of launching a payload into low Earth orbit. The study describes the auxiliary propulsion system and its constituent elements and gives the results of a preliminary calculation of the main characteristics of a low-thrust engine. Within the research, we developed a sketch layout of the auxiliary propulsion system integrated into the 14D23 liquid propellant rocket engine and analyzed the mass characteristics of the constituent elements and the greatest contribution to the total mass of the propulsion system. The proposed propulsion system is distinguished by electric drives for the power supply system pumps used instead of the turbine drive. This auxiliary propulsion system, combined with a 14D23 liquid propellant rocket engine, powered by oxygen-naphthyl propellants, is proposed for use in the III stage of the Soyuz-2-1b launch vehicle.
Parametric computational study of particle trajectory deviation probabilistic nature influencing the unevenness of their localization in the model tract
Authors: Voronetskiy A.V. , Arefiev K.Yu. , Abramov M.A.
Published: September 2021

The purpose of this research was to investigate the spatial structure of a two-phase flow in a supersonic model channel of circular cross-section with a diameter of the cylindrical part of ~10 mm. For modeling, we used the Euler-Lagrange approach in combination with a probabilistic estimate of the dispersed particles deviation from their base trajectory. Chromium-nickel alloy particles with a diameter of 15 to 40 μm move in the channel in a special way, which was considered in the paper. Furthermore, we analyzed how the nature of the distribution function of the particle’s root-mean-square deviation from its base trajectory influences the quality of mixing of the dispersed phase with the flow and the number of particles interacting with the walls of the flow path.
Ocena przemian i przydatności turystycznej środowiska przyrodniczego nad Zalewem Koronowskim – propozycja metody badawczej
Authors: Pietrzak Piotr
Published: September 2021

Praca dotyczy analizy przemian, jakie wywołała działalność turystyczna w środowisku przyrodniczym obszarów położonych nad Zalewem Koronowskim. Autor, posługując się własną metodą badawczą prezentuje zarówno pozytywne, jak i negatywne skutki działalności turystycznej na badanym obszarze za okres osiemnastu lat (1974-1992).