bluuebunny/crossref_metadata_2025 huggingface dataset:
CAUSES AND STRATEGIES TO COPE ENGLISH LANGUAGE SPEAKING ANXIETY IN PAKISTANI UNIVERSITY STUDENTS
Authors: Hussain Syed Qaiser , Akhtar Naeem , Shabbir Nida , Aslam Nazia , Arshad Samra
Published: May 2021

Purpose of the study: This study aims to explore the possible causes of speaking anxiety among Pakistani university students in an engineering university in Karachi. Another aim of this study is to find out the strategies used by these students to cope with the anxiety they have while speaking English as a second or foreign language. Methodology: The research was qualitative and used an open-ended questionnaire to take the detailed responses of the participants. 80 (40 males and 40 females) participants were selected for this study using the purposive sampling technique. The researchers also translated the tool into the Urdu language to make it more intelligible for the participants. Main Findings: The causes of speaking anxiety were lack of confidence, vocabulary, fear of being ridiculed, peer pressure, facing a lot of people, rules of grammar, lack of preparation, fear of making mistakes, and negative attitude of the teacher and the coping strategies were avoiding the audience, taking help from teacher or peer, preparing well, taking deep breaths, facilitating anxiety, distracting the anxiety, self-talk/praise, restarting, physical movement, using humor and maintaining eye contact with only one person. Applications of this study: This study is useful for the teachers teaching courses related to speaking English as a second or foreign language. This study will help the teachers in tracing the explored elements of anxiety in a class in general and in a student in particular. They will try to mold their pedagogy to make the learning process more enjoyable and less anxious. Novelty/Originality of this study: The current study explores the elements of speaking anxiety in the Pakistani context. Earlier studies have implemented pre-invented tools rather than unearthing the anxiety-provoking elements. Hence, this study can be considered as an ice breaker when it comes to exploring the elements of speaking anxiety in the Pakistani context.
Aplicar y medir la innovación social Experiencias en instituciones de educación superior
Authors: Jaillier Castrillón Erika
Published: May 2021

Este segundo libro sobre el tema de Innovación Social se centra en este caso en cómo aplicar y cómo medir el potencial de innovación social y de impacto social de los proyectos o iniciativas que buscan transformar tanto las prácticas cotidianas como a los sujetos participantes en iniciativas innovadoras para la solución de problemáticas de diversa índole en los territorios. Parte de los aprendizajes previos del anterior material, titulado “Construyendo la Innovación Social. Guía para comprender la Innovación social en Colombia.” (2017 ver en https://repository.upb.edu.co/handle/20.500.11912/5464) y acrecentar un poco más el proceso de la innovación en contextos colombianos y por qué no, latinoamericanos. Este libro de investigación es resultado del proyecto “Apropiación y fomento de la Innovación Social: Evaluación de capacidades, seguimiento a transformaciones sociales y medición de impactos” presentado por universidades miembros de la Red de Innovación desde la Educación Superior.
Cognitive-Behavioral Model of Generalized Anxiety Disorder Psychotherapy
Authors: Kuzo Lyubov , Kuzo Oleksandra , Posokhova Anzhela
Published: May 2021

Among the variations of anxiety disorders, generalized anxiety disorder is considered to be one of the most problematic. In times of intense social transformation, the issue of mental health of the youth, in particular the prevalence of tendencies to generalized anxiety disorder among young people arises. For this reason, the purpose of the article is to investigate the propensity of young students to excessive experiences and propose a model of understanding and treatment of generalized anxiety disorder. Cognitive-behavioral methodology is used while the study for understanding generalized anxiety disorder, PSWQ experience questionnaire, WWS-II experience value scale, and two survey items. The results of the study show that 18% of the youth surveyed have a high level of anxiety. Such young people can be considered a risk group for generalized anxiety disorder. The results of the study indicate that respondents with a high level of worry are statistically more likely to perceive worries as those helping them to solve problems, motivate them to act and are able to prevent negative results. Such positive beliefs about the experience may reduce the perceived need to seek help from psychologists and psychotherapists. A description of the clinical case is given and the effectiveness of psychotherapeutic interventions is demonstrated. An algorithm for working with clients is proposed, which is based on a modern protocol for the treatment of generalized anxiety disorder. It includes: qualified examination; reassessment of the usefulness of the worry; assistance in a realistic understanding of ambiguous situations as such that are not clearly threatening; rethinking attitudes to situations of uncertainty; use of exposures for the purpose of deeper processing of the stimulus in a nonverbal way; skills of overcoming negative emotions without avoiding them. An attempt to combine the clinical paradigm and the scientific position is made in the article. Nowadays there are very few studies based on cognitive-behavioral methodology in Ukraine.
Psychological Correction of Parents' Attitude to Their Children with Special Educational Needs by Means of Art Therapy
Authors: Havrylkevych Viacheslav , Podkorytova Larysa , Danylchuk Larysa , Romanovska Liudmila , Kravchyna Tetiana , Chovgan Olena
Published: May 2021

The paper presents the results of empirical study of parents' attitudes towards their children with special educational needs. The following methods have been used: PARI method (E. Schaefer, R. Bell; adaptation by T. Nescheret), test-questionnaire of parental attitude of A. Varga and V. Stolin; questionnaire 'Analysis of family myth' by A. Nesterova. To clarify and deepen the analysis of research data, two samples of selected participants have been created: a) parents of children with special educational needs and b) parents of children without special educational needs. Two Google forms have been made with appropriate introductory questionnaires and research instructions. The analysis of the results obtained by the methods has revealed the following tendencies in the attitude of parents of children with special educational needs, in comparison with parents of other children: lower level of acceptance; greater concentration on the child and his/her control; a kind of inconsistency in the attitude to their children (simultaneous optimal emotional contact and excessive emotional distance); a sense of self-sacrifice and belief in its necessity. It has been proved, that the usage of different types and forms of art therapy (music, dance-movement, bibliotherapy, fairy tale therapy, phototherapy, film therapy, fine art therapy) helps to correct parents' attitude to their children with special educational needs. In addition, a number of recommendations for the use of art therapy to work with parents of children with special educational needs has been proposed.
Stress-Coping Behavior of the Individual as a Psychological Problem in the Context of the Application of Sanogenic Health Thinking
Authors: Yarosh Nina , Artiukhova Vladyslava , Panchenko Viktoriia , Fera Svitlana , Prykhodko Dmytro
Published: May 2021

Psychologists face an urgent task - to teach a person to effectively deal with stressors, which he encounters every day. The aim is to investigate the features of sanogenic thinking as a factor of stress-coping behavior of the individual. The test-persons were of cadets in the amount of 345 people, of whom women - 167 people and men - 178 people. As a result of a formative experiment to teach the skills of sanogenic thinking, the article investigated the presence of changes in the degree of stress using the methods of "Psychological Stress Scale PSM-25" and the questionnaire "Fatigue-Monotony-Satiety-Stress". It is determined that the formation of sanogenic thinking skills as a result of the formative experiment, helps to reduce the level of fatigue, monotony, satiety and stress in the individual. Relationships between the level of development of sanogenic thinking and coping strategies used by the individual are revealed. Regression analysis showed that the study of personality theory and practice of sanogenic thinking allows you to expand awareness of emotional mental operations and acquire skills and abilities to introspect their own emotions, experiences in overcoming stress. That is, sanogenic thinking can be a factor in stressful behavior of the individual.
Stress Resistance in the Situation of Uncertainty as a Factor of Development of Adaptive Ability of Medical Personnel
Authors: Halian Andriy , Halian Ihor , Popovych Ihor , Zavatskyi Yurii , Semenov Oleksandr , Semenova Nataliia
Published: May 2021

Aim. The aim of the study is to perform psychological and psychophysiological analysis of the features of stress resistance that provide adaptation of medical personnel in the situation of uncertainty. Materials and methods. The study involved: 125 students of III and IV years of study majoring in “Treatment” and “Nursing”; 95 internship doctors 2-3 years of training in various specializations. 36.84% of the total numbers of studied internship doctors were those whose specialization is characterized by an increased level of stress. Methods: correlation analysis, tests with standardized questionnaires. Result. It was found that the manifestation of open, direct aggression by respondents is an acceptable strategy of interaction, which does not significantly affect adaptability. It has been studied that hostility, as an internal directive of the personality, is often not observed externally and determines the decrease in emotional comfort and violation of adaptation. Conclusions. It is proved that adaptive activity as a system-forming factor is accompanied by a number of psychological, biological and social processes and collectively forms the stress resistance of the personality. It is indicated that the immune system is an important part of the functional systems that form the biological factor of functional diagnosis at the stage of low stress resistance and borderline disorders. It is noted that it is appropriate to use functional diagnosis as a basis for diagnosing a person’s mental state in the development of stress resistance.
ИСПОЛЬЗОВАНИЕ ВТОРИЧНЫХ МАТЕРИАЛОВ ПРИ ВОССТАНОВЛЕНИИ РАБОТОСПОСОБНОСТИ ВТУЛОК ПОДШИПНИКОВ СКОЛЬЖЕНИЯ
Authors: Пилипенко Станислав Владимирович , Фруцкий Виктор Александрович , Дудан Александр Витальевич
Published: May 2021

Актуальность работы обусловлена необходимостью ремонта втулок, имеющих рабочий износ, повышения антифрикционных характеристик трибосопряжений, экономии дорогостоящего сырья и внедрения ресурсосберегающих технологий. Вопрос экономии дорогостоящих материалов или замены их на менее дорогостоящие, а также применение отходов металлообрабатывающих производств не вызывает сомнений. Обеспечение повышенных значений нагрузок и скоростей скольжения при общем снижении стоимости сопряжений и соизмеримых межремонтных периодов достигается путем применения отходов стружки и проведения экономного динамического легирования на микроуровне материалами, способными улучшить эксплуатационные показатели сопряжения в целом. Снижение уровня антропогенного влияния достигается вследствие применения относительно безотходных методов восстановления. Цель: создать трибосопряжение, эффективно работающее при заданных условиях эксплуатации, при этом ограничивая количество потерь дорогостоящих ресурсов и сводя к минимуму негативное влияние на окружающую среду. Для этого применяется основа из измельченных металлоотходов с использованием экономного динамического легирования. Методы: теоретические исследования стойкости предложенного материала, конструкции сопряжения и метода его нанесения; расчет технологических параметров нанесения материала в зависимости от условий эксплуатации. Результаты. Определено наилучшее значение линейных параметров элементарных стружечных отходов, оптимальное значение легирующих элементов для данных условий эксплуатации трущихся пар. Разработана технология получения материалов с прогнозируемыми свойствами, с возможностью регулировки отдельных свойств материалов в зависимости от реальных условий эксплуатации. Разработанная технология ремонта тяжелонагруженных подшипников скольжения, работающих в неблагоприятных условиях эксплуатации, проверена в условиях современного машиностроительного предприятия.
ОБЗОР СОВРЕМЕННОГО СОСТОЯНИЯ СОЛЯНОЙ ПРОМЫШЛЕННОСТИ РОССИИ
Authors: Боярко Григорий Юрьевич , Хатьков Виталий Юрьевич
Published: May 2021

Актуальность работы обусловлена необходимостью изучения состояния соляной промышленности России при наличии значительной импортозависимости по хлориду натрия. Цель: изучение динамики товарных потоков (производства, импорта, экспорта, потребления) хлорида натрия и производимых из него товарных продуктов, их цен (мировых, российского импорта и экспорта), сырьевой базы каменной соли России и перспектив увеличения ее национального производства. Методы: статистический, графический, логический. Результаты. Соляная промышленность России, несмотря на значительные объемы добычи (до 6,5 млн т/год) на фоне роста потребления (+3,8 %/год, до 7,8 млн т/год), длительное время являлась импортозависимой отраслью, импортируя до 2,4 млн т/год, или до 45 % от национального потребления. Лишь в 2019 г. доля импорта каменной соли снизилась до 18 %. Зависимость обусловлена устоявшимися товарными потоками каменной соли в экономическом пространстве СНГ, первоначально в основном с Украины. После политических санкций 2014 г. поток украинской соли был замещен увеличением импорта из Беларуси и Казахстана. Сырьевая база каменной соли России практически не ограничена, но востребованы преимущественно объекты добычи поблизости от главных потребителей (население Европейской части России и химические предприятия запада страны). Фактор транспортной логистики для каменной соли является определяющим. Создание новых центров добычи каменной соли, а также расширение имеющихся производств хлористого натрия, проблемно ввиду невысокой стоимости этого товара. Поэтому темпы производства соли медленно замещали импортные потоки каменной соли на фоне опережающего роста ее национального потребления. Рост национального производства каменной соли происходил в основном за счет увеличения выпуска попутного технического хлорида натрия при добыче калийных солей ПАО «Уралкалий» (с 0,76 млн т в 2015 г. до 1,8 млн т в 2019 г.). Увеличение потребления технической соли обусловлено ростом производства соляной кислоты (+3,5 %/год), гипохлоритов, хлоратов и перхлоратов (+2,4 %/год), а также значительным ростом потребления антиобледенительных материалов. Увеличение объемов заготовки поваренной соли возможно на объектах геотехнологической разработки месторождений ПАО «Руссоль» и АО «Башкирская содовая компания». Прирост объемов добычи технической соли наиболее реален путем увеличения выхода попутного хлорида натрия при добыче калийных солей в ПАО «Уралкалий», а также в рамках подготавливаемого проекта строительства Гремячинского ГОКа АО «МХК "ЕвроХим"».
Sintesis dan Karakterisasi Poly (Anthranilic Acid-Co-Formaldehyde) untuk Adsorpsi Ion Pb(II)
Authors: Kartika Siska Ela , Amran Muhammad Bachri
Published: May 2021

Besides having a positive impact, rapid industrial development also gives a negative impact in the form of industrial waste causing environmental pollution. Lead is one of the heavy metal ions that become a primary indicator of pollution according to the United States Environmental Protection Agency (US EPA). The determination of lead directly in environmental samples is often difficult because of the very low concentration of metal ions and the matrix interferences. Therefore, preconcentration techniques that can simplify the matrix are required. Ionic exchange resins, functionalized chelating resins, and ion imprinted polymers are mostly used to preconcentrate the trace elements. Poly (anthranilic acid-co-formaldehyde) is polymer synthesized by mixing anthranilic acid, formaldehyde, and HCl. The poly (anthranilic acid-co-formaldehyde) was characterized by FTIR and SEM analysis. Characterization results indicate that polymerization reaction has been formed indicated by the vibration of the CH2 bridge. Poly (anthranilic acid-co-formaldehyde) has a relatively smooth surface with pores. The batch method was applied. The maximum adsorption for Pb(II) ions was 16.37 mg/g at pH 5 with a contact time of 10 minutes. Keywords: poly (anthranilic acid-co-formaldehyde), adsorption, lead Selain memberikan dampak positif, perkembangan industri yang pesat juga dapat memberikan dampak negatif berupa limbah industri penyebab pencemaran lingkungan. Timbal merupakan salah satu ion logam berat yang menjadi indikator primer pencemaran menurut United States Environmental Protection Agency (US EPA). Penentuan konsentrasi timbal secara langsung dalam sampel lingkungan seringkali sulit dilakukan karena terdapat pada konsentrasi renik dengan matriks yang rumit. Oleh karena itu, teknik prakonsentrasi yang dapat menyederhanakan matriks sangat diperlukan. Resin penukar ion, resin pengkhelat, dan ion imprinted polymers banyak digunakan untuk prakonsentrasi unsur renik. Poly (anthranilic acid-co-formaldehyde) merupakan polimer yang disintesis dengan cara mencampurkan asam anthranilat, formaldehida, dan HCl. Karakterisasi poly (anthranilic acid-co-formaldehyde) telah dilakukan menggunakan FTIR dan SEM. Hasil karakterisasi mengindikasikan bahwa reaksi polimerisasi telah terbentuk yang ditunjukkan dengan adanya vibrasi CH2 bridge. Poly (anthranilic acid-co-formaldehyde) memiliki morfologi permukaan yang relatif halus dan berpori. Metode yang digunakan untuk mempelajari kemampuan adsorpsi adalah metode batch. Kapasitas adsorpsi poly (anthranilic acid-co-formaldehyde) terhadap ion Pb(II) adalah 16,37 mg/g pada pH 5 dengan waktu kontak 10 menit. Kata kunci: poly (anthranilic acid-co-formaldehyde), adsorpsi, timbal
Working in Unfamiliar Territory: A Rhetorical Criticism of the Work-Related Sequences in The Arrival by Shaun Tan
Authors: Albritton Andrew
Published: May 2021

Shaun Tan’s 2006 wordless graphic novel The Arrival presents readers with an affecting portrait of the immigrant experience. Drawing from semiotic theory and the narrative paradigm, this paper offers a rhetorical criticism of the scenes in The Arrival related to the main character’s employment-related experiences. The paper proposes a novel theoretical concept – a semiotics of unfamiliarity – and, guided by this concept and the narrative paradigm, concludes that The Arrival is an effective rhetorical artifact that poignantly presents important information about the professional difficulties faced by immigrants. It is recommended that The Arrival be considered for use in organizations that employ newly arrived immigrants.
Near Infrared Spectrum for Non-Invasive Glucose Measurement
Authors: Dorsaf Ghozzi
Published: May 2021

This paper deals with novel approach for non-invasive glucose monitoring based on NIR spectroscopy. The technique was demonstrated on 300 human serums of different concentrations range of 08-297 mg/dl. In order to compare the proposed approach to a standard one, a regression analysis was performed and used to predict glucose concentration overall range of values. In vitro experiments showed a strong correlation between noninvasively device result and real glucose concentration. The correlation was 0.97 and Clarke error grid analysis showed that 97.33% of the measured fall within the clinically acceptable regions. Results showed that the created model can open a new path to a real-time, painless and a portable device that would well-being the lives of millions of diabetics in the world.
Screening Diabetic Retinopathy by smartphone, which adapter to choose? Algerian model (Youssouf Dr Model)
Authors: Youssouf Belazzouz Abderrahmen
Published: May 2021

Diabetes mellitus has become a global epidemic, this increase in frequency is the result of screening more and more frequent. The improvement in therapeutic management has made that survival among diabetics has increased enormously and has made a transition of complications forms ranging from fatal renal complications to complications threatening the functional prognosis (like diabetic retinopathy). The latter is often discovered at a late stage because of several causes, some of which are related to the pathology (silent, rarely florid), others related to the patient (inobservance of the monitoring of complications checkup) and the environment (social conditions).
Entrepreneurial ecosystem: Analysis of the contribution of universities in the creation of technology-based firms
Authors: Silva João Paulo Moreira , Guimarães Liliane de Oliveira , Inácio Júnior Edmundo , Castro José Márcio de
Published: May 2021

This paper aimed to analyze how higher education institutions contribute to the creation of technology-based firms. The research method was that of multiple cases, represented by two universities and five technology-based firms in Belo Horizonte. We selected businesses that had as founders students or former students of the researched universities. The results showed that the institutions have robust structures and programs, but still act in a little internally integrated way. In addition, the entrepreneurs do not identify the contribution of their university education in their entrepreneurial trajectory. The study contributes to the understanding of the role of the university in the entrepreneurial ecosystem. From a theoretical point of view, the study identified categories of analysis to evaluate entrepreneurial universities.
Contexts of illustrations in RPG manuals as exemplified by The Dungeons & Dragons series
Authors: Chudy Jakub
Published: May 2021

Role playing games (RPGs) based on Polish bibliological research are an almost non-existent subject that is beyond the researchers’ area of interest. Rulebooks created for their needs are characteristic and unique publications, mainly due to their speciﬁc form and the goals they pursue, among others with the help of illustrations. For the needs of the article, thematic, quantitative and aesthetic analyses of basic rulebooks from the main publishing line of the Dungeons & Dragons series were given. Based on the collected data, the characteristics of the trends and regularities of the aspects of the illustration were examined to draw attention to the potentially new ﬁeld of bibliological research. According to the author, these publications are an intriguing element of the Polish and global world of the book which is worth exploring.
Selected polite expressions in contemporary Polish written in Ukraine (against the background of the Polish nationwide standard)
Authors: Krawczyk Ałła
Published: May 2021

The aim of the article is to show some deviations from the Polish nationwide rules in selected polite expressions in the written text on a large amount of research material (over two thousand units), extracted from almost half a thousand issues of Polonia newspapers, published in Ukraine in the 21st century. What is analysed are some peculiarities of the structure of these units against the background of their pragmatic Polish nationwide equivalents, their functions in the press text of the inherited Polish language, and the communication capabilities both within and without the studied communicative community. The influence of Ukrainian polite expressions on the studied expressions of inherited Polish language is evaluated. The research results give rise to a reflection on the issue of differential acceptability — against the background of the general standard — of the features of the linguistic label in the inherited Polish language in Ukraine.
Co łączy nazwy dźwięków ze świadomością językową?
Authors: Kładoczny Piotr
Published: May 2021

Names of sound can be used to assess language awareness. Their psycholinguistic aspect is observed in the case of teaching small children language. The second aspect is descriptive and registering in nature, and is related to the knowledge of words. Some names of sounds take on a stylistic character and their use is sometimes assessed by others. Names of animal sounds that have a secondary reference to humans have a negative character, as do names of sounds that are used secondarily as speaking names. The sociolinguistic aspect is associated with the names of sounds typical of cer-tain backgrounds and used in a certain geographical area. The last manifestation of linguistic awareness regarding the names of sounds is related to communicative and discursive usage, i.e. applied to particular situations, persons, and a subject matter of an utterance. One can also see a manifestation of creative activity of people in the area of sound names. Artists and creative individuals not only use well-known names of sounds, but they also create completely new ones.
O silenciamento da participação da juventude na seleção de diretores no PEE/RJ
Authors: Castro Marcela
Published: May 2021

Analiso o silenciamento da participação da juventude na Lei n° 7.299/16 (RIO DE JANEIRO, 2016), no contexto Documento de Referência do Plano Estadual do Rio de Janeiro (PEE/RJ). Articulo o Estado, contexto macro da política democrática, na relação com contexto micro: movimento de ocupação e a política, assumindo a relação agonística pela participação na seleção de diretores no estado. Opero com a perspectiva cíclica da construção de políticas e sua leitura como texto e discurso, problematizando a ação do jovem no cenário das ocupações em 2016 e no texto do Documento. Considero que o movimento que retira o jovem da cena política e induz à hibernação da Lei, reduzindo a participação da comunidade na prática democrática atua para ampliar as fissuras para os atos discricionários neste ordenamento.
O ensino médio e a continuidade da pedagogia da exclusão
Authors: De Paiva Suzy Helen Santos
Published: May 2021

O artigo aborda um panorama do Ensino Médio no Brasil a partir de 1985, ano que marca o final do Regime Civil Militar e o começo da República Nova sob o contexto da Declaração Universal dos Direitos Humanos que reconhece a educação como um direito fundamental. O foco do estudo incide na continuidade do que Saviani chamou de “pedagogia da exclusão”, ou seja, a continuidade de um sistema de Ensino Médio com altos índices de evasão e reprovação. Baseado na metodologia quali-quantitativa busca mesclar dados procedentes da bibliografia e da legislação educacional com dados estatísticos, com o intuito de ilustrar que o estado não cumpre efetivamente o seu dever de proporcionar o direito pleno a educação o que consequentemente expande as diferenças.
Reflexões sobre letramento crítico e análise de textos multimodais (artigo despublicado a pedido da autora em 27/12/2020)
Authors: França Simone Dos Santos
Published: May 2021

Artigo despublicado a pedido da autora em 27/12/2020.
New combinations in Debia, Dimetia and Scleromitrion (Rubiaceae) relating to the Flora of Thailand
Authors:   1  Department of Biology, Faculty of Sceince, Mahasarakham University, Maha Sarakham 44150, Thailand, Wangwasit Khanit , Chantaranothai Pranom ,   Applied Taxonomic Research Center, Department of Biology, Faculty of Sceince, Khon Kaen University, Khon Kaen 40002,  Thailand
Published: May 2021

New combinations for five taxa in the Hedyotis-Oldenlandia complex (Rubiaceae) in Thailand are proposed, namely Debia rosettifolia, Dimetia capitellata var. pubescens, D. prainiana, D. ridleyana and Scleromitrion kerrii. Six relevant taxa are lectotypified.
Antheroporum puudjaae (Millettieae: Fabaceae), a new species from Thailand
Authors:   Department of Biology, Faculty of Science, Udon Thani Rajabhat University, Udon Thani 41000, Thailand, Mattapha Sawai , Tetsana Naiyana ,   Forest Herbarium, Department of National Parks, Wildlife and Plant Conservation, 61 Phahonyothin Road, Ladyao, Chatuchak,  Bangkok 10900, Thailand
Published: May 2021

Antheroporum puudjaae, a new species discovered in Northern Thailand, is described and illustrated. It differs from other described species of Antheroporum by its drooping inflorescences and oblong fruits with 2–4 seeds. The generic description is expanded based on these new characters. An emended key to the species for the Flora of Thailand is also provided.
Identification of Long-term Behavior of Natural Circulation Loops: A Thresholdless Approach from an Initial Response
Authors: Bhattacharya Chandrachur , Saha Ritabrata , Mukhopadhyay Achintya , Ray Asok
Published: May 2021

Natural circulation loop (NCL) systems are buoyancy-driven heat exchangers that are used in various industrial applications. The concept of passive heat exchange in NCL systems is attractive, because there is no need for an externally driven equipment (e.g., a pump) to maintain the fluid circulation. However, relying on buoyancy as the sole driving force may lead to several potential difficulties, one of which is generation of (possibly) time-varying nonlinearities in the dynamical system, where a difference in the time scales of heat transfer and fluid flow causes the flow to change from a steady-state regime to either an oscillatory regime or a flow-reversal regime, both of which are undesirable. In this paper, tools of symbolic time series analysis (e.g., probabilistic finite state automata (PFSA)) are proposed to identify selected regimes of operation in NCL systems, where the underlying principle is built upon the concept of pattern classification from measurements of fluid-flow dynamics. The proposed method is shown to be capable of identifying the current regime of operation from the initial time response under a given set of operational parameters. The efficacy of regime classification is demonstrated by testing on two data sets, generated from numerical simulation of a MATLAB SimuLink model that has previously been validated with experimental data. The results of the proposed PFSA-based classification are compared with those of a hidden Markov model (HMM) that serves as the baseline.
Critical-Sized Bone Defect Regeneration: A Novel Scaffold Made by Electrospinning of Metformin-Incorporated Gelatin/Hydroxyapatite Nano-Fibers
Authors: Sun Chung-Kai , Weng Pei-Wei , Chang Zwei-Chieng , Lin Yi-Wen , Tsuang Fon-Yih , Lin Feng-Huei , Tsai Tung-Hu , Sun Jui-Sheng
Published: May 2021

Tissue engineering and regenerative medicine has gradually evolved as a promising therapeutic strategy to the modern healthcare of the aging and diseased population. In this study, we developed a novel nano-fibrous scaffold and verified its application in the critical bone defect regeneration.
The metformin-incorporated nano-gelatin/hydroxyapatite fibers (NGF) was produced by electrospinning, cross-linked, and then characterized by XRD and FTIR. Cytotoxicity, cells adhesion, cell differentiation, and quantitative osteogenic gene and protein expression were analyzed by bone marrow stem cells from rat. Rat forearm critical bone defect model was performed for the in vivo study.
The nano-gelatin/hydroxyapatite fibers (NGF) were characterized by their porous structures with proper interconnectivity without significant cytotoxic effects; the adhesion of bone marrow stem cells on the nano-gelatin/hydroxyapatite fibers (NGF) could be enhanced. The osteogenic gene and protein expression were upregulated. Post implantation, the new regenerated bone in bone defect was well demonstrated in the NGF samples.
We demonstrated that the metformin-incorporated nano-gelatin-hydroxyapatite fibers greatly improved healing potential on the critical sized bone defect. Although metformin-incorporated nano-gelatin/hydroxyapatite fibers had advantageous effectiveness during bone regeneration, further validation is required before it can be applied to clinical applications.
COP and the Cloth: Quantitatively and Normatively Assessing Religious NGO Participation at the Conference of Parties to the United Nations Framework Convention on Climate Change
Authors: Krantz David
Published: May 2021

How much is religion quantitatively involved in global climate politics? After assessing the role of the Conference of Parties to the United Nations Framework Convention on Climate Change from a normative perspective, this descriptive, transdisciplinary and unconventional study offers the first comprehensive quantitative examination of religious nongovernmental organizations that formally participate in its annual meetings, the largest attempts to solve the climate crisis through global governance. This study finds that although their numbers are growing, only about 3 percent of registered nongovernmental organizations accredited to participate in the conference are overtly religious in nature — and that more than 80 percent of those faith-based groups are Christian. Additionally, this study finds that religious nongovernmental organizations that participate in the conference are mostly from the Global North. The results call for greater participation of religious institutions in the international climate negotiations in order for society to address the planetary emergency of climate change.
Investigation of the Scattering Noise in Underwater Optical Wireless Communications
Authors: Majlesein Behnaz , Gholami Asghar , Ghassemlooy Zabih
Published: May 2021

In underwater optical wireless communications (UOWC), scattering of the propagating light beam results in both intensity and phase variations, which limit the transmission link range and channel bandwidth, respectively. Scattering of photons while propagating through the channel is a random process, which results in the channel-dependent scattering noise. In this work, we introduce for the first time an analytical model for this noise and investigate its effect on the bit error rate performance of the UOWC system for three types of waters and a range of transmission link spans. We show that, for a short range of un-clear water or a longer range of clear water, the number of photons experiencing scattering is high, thus leading to the increased scattering noise.
Table in Gradshteyn and Ryzhik: Derivation of definite integrals of a Hyperbolic Function
Authors: Reynolds Robert , Stauffer Allan
Published: May 2021

We present a method using contour integration to derive definite integrals and their associated infinite sums which can be expressed as a special function. We give a proof of the basic equation and some examples of the method. The advantage of using special functions is their analytic continuation which widens the range of the parameters of the definite integral over which the formula is valid. We give as examples definite integrals of logarithmic functions times a trigonometric function. In various cases these generalizations evaluate to known mathematical constants such as Catalan’s constant and π
Hypergolic Synthesis of Inorganic Materials by the Reaction of Metallocene Dichlorides With Fuming Nitric Acid At Ambient Conditions: The Case of Photocatalytic Titania
Authors: Chalmpes Nikolaos , Asimakopoulos Georgios , Baikousi Maria , Bourlinos Athanasios B. , Karakassides Michael A. , Gournis Dimitrios
Published: May 2021

Hypergolic materials synthesis is a new preparative technique in materials science that allows a wide range of carbon or inorganic solids with useful properties to be obtained. Previously we have demonstrated that metallocenes are versatile reagents in the hypergolic synthesis of inorganic materials, such as γ-Fe2O3, Cr2O3, Co, Ni and alloy CoNi. Here, we take one step further by using metallocene dichlorides as precursors for the hypergolic synthesis of additional inorganic phases, such as photocatalytic titania. Metallocene dichlorides are closely related to metallocenes, thus expanding the arsenal of organometallic compounds that can be used in hypergolic materials synthesis. In the present case, we show that hypergolic ignition of the titanocene dichloride-fuming nitric acid pair results in the fast and spontaneous formation of titania nanoparticles at ambient conditions in the form of anatase-rutile mixed phases. The obtained titania shows good photocatalytic activity towards Cr(VI) removal (100 % within 9 h), the latter being dramatically enhanced after calcination of the powder at 500 °C (100 % within 3 h). Worth noting, this performance was found to be comparable to that of commercially available P25 TiO2 under identical conditions. The cases of zirconocene, hafnocene and molybdocene dichlorides are complementary discussed in this work, aiming to show the wider applicability of metallocene dichlorides in the hypergolic synthesis of inorganic materials (ZrO2, HfO2, MoO2).
Prognostic Value of PD-L1, PD-1 and CD8A in Canine Diffuse Large B-cell Lymphoma Detected by RNAscope
Authors: Aresu Luca , Marconato Laura , Martini Valeria , Fanelli Antonella , Licenziato Luca , Foiani Greta , Melchiotti Erica , Nicoletti Arturo , Vascellari Marta
Published: May 2021

Immune checkpoints are a set of molecules dysregulated in several human and canine cancers and aberrations of the PD-1/PD-L1 axis are often correlated with a worse prognosis. To gain insight into the role of immune checkpoints in canine diffuse large B-cell lymphoma (cDLBCL), we investigated PD-L1, PD-1 and CD8A expression by RNAscope. Results were correlated with several clinico-pathological features, including treatment, Ki67 index and outcome. A total of 33 dogs treated with CHOP (n=12) or CHOP plus APAVAC (n= 21) were included. PD-L1 signal was diffusely distributed among neoplastic cells, whereas PD-1 and CD8A were localized in tumor infiltrating lymphocytes. However, PD-1 mRNA was also retrieved in tumor cells. An association between PD-L1 and PD-1 scores was identified and a higher risk of relapse and lymphoma-related death was found in dogs treated with chemotherapy alone and dogs with higher PD-L1 and PD-1 scores. The correlation between PD-L1 and PD-1 is in line with the mechanism of immune checkpoints in cancers, where neoplastic cells overexpress PD-L1 that, in turn, binds PD-1 receptors in activated TIL. We also found that Ki67 index was significantly increased in dogs with the highest PD-L1 and PD-1 scores, indirectly suggesting a role in promoting tumor proliferation. Finally, even if the biological consequence of PD-1+ tumor cells is unknown, our findings suggest that PD-1 intrinsic expression in cDLBCL might contribute to tumor growth escaping adaptive immunity.
Deep Learning for COVID-19 Recognition
Authors: Zhang Yuchen , Zhang Yanyan
Published: May 2021

Pneumonia is a leading cause of death worldwide, and one of the most significant approaches to diagnose pneumonia is Chest X-ray (CXR) since it was used in clinical scenes. Convolutional neural networks (CNNs) have been widely used in computer vision community. Along with the development of CNNs, we want to make use of CNNs to recognize CXR of people who get pneumonia and make classification. It is important, especially during epidemic period. In this paper, we present a new type of residual learning framework, PEPX-Resnet, which makes use of a type of lightweight residual, and apply this network to CXR dataset. The result shows that PEPX-Resnet is easier to optimize and can have better results, especially for COVID-19 cases. PEPX-Resnet could reach higher accuracy, f1 score and some other evaluations for CXR dataset.
Диффузионная модель для описания стационарной работы биохимического реактора при учете релаксационного переноса вещества
Authors: Мошинский Александр Иванович , Moshinskii Aleksandr Ivanovich
Published: May 2021

Рассматривается нелинейная краевая задача, описывающая работу проточного биохимического реактора при учете релаксации потока вещества. В качестве источника вещества принят логистический закон. Разыскиваются нетривиальные решения при однородных граничных условиях. За основу анализа взята предельная форма уравнений релаксационной модели. Анализируется смена режимов работы реакторов при наличии двух решений уравнений процесса.
Landslide Investigation Results in Sapa Town, Lao Cai Province, Vietnam in December 2019
Authors: Thang Nguyen Van , Sato Go , Wakai Akihiko , Hung Hoang Viet , Manh Nguyen Duc , Kimura Takashi , Yamasaki Takanari , Tosa Shinichi , Hayashi Kazunori , Watanabe Akino , Ozaki Takatsugu , Asai Nobuyuki , Kitamura Nanaha ,   Gunma University 1-5-1 Tenjin, Kiryu, Gunma 376-8515, Japan,   Teikyo Heisei University, Tokyo, Japan,   Thuyloi University, Hanoi, Vietnam,   University of Transport and Communications, Hanoi, Vietnam,   Ehime University, Ehime, Japan,   Japan Conservation Engineers & Co., Ltd., Tokyo, Japan,   Okuyama Boring Co., Ltd., Miyagi, Japan,   Department of Mathematics, Faculty of Science and Technology, Tokyo University of Science, Tokyo, Japan
Published: May 2021

Every year, especially in the rainy season, landslides occur quite often in Lao Cai – a northern mountainous province of Vietnam. Specifically, in the year 2019, several landslides were observed to occur near the Sapa Ancient Rock Field in Hau Thao commune, Sapa town, Lao Cai province. In December 2019, a landslide investigation was conducted to examine the mechanism and possible causes of the landslides. Besides that, as the landslide distribution in this area is still unclear, this study will also aim to show the landslide denseness in a 700 m × 700 m square map as well as survey results in 2019 of two main landslides in such map. According to the survey, the landslide is the main phenomenon of geomorphological development in this area, being a combination of multiple different landslides with varying sizes and dissimilar triggers. The first survey landslide is about 50 m wide and 350 m long and has still been going on in recent years, with annual horizontal displacement being around 0.8 m. Meanwhile, the second one is a typical flash-landslide caused by rainfall. Despite being quite small in scale, about 15 m × 40 m, its characteristics indicate a dangerous implication in the future. This information will be the basis for further ongoing studies.
Study on Combining Two Faster R-CNN Models for Landslide Detection with a Classification Decision Tree to Improve the Detection Performance
Authors: Tanatipuknon Asadang , Aimmanee Pakinee , Watanabe Yoshihiro , Murata Ken T. , Wakai Akihiko , Sato Go , Hung Hoang Viet , Tungpimolrut Kanokvate , Keerativittayanun Suthum , Karnjana Jessada ,   Sirindhorn International Institute of Technology, Thammasat University Pathum Thani, Thailand,   National Electronics and Computer Technology Center (NECTEC),  National Science and Technology Development Agency, Pathum Thani, Thailand,   School of Engineering, Tokyo Institute of Technology, Tokyo, Japan,   National Institute of Information and Communications Technology (NICT), Tokyo, Japan,   Graduate School of Science and Technology, Gunma University, Gumma, Japan,   Graduate School of Environmental Informations, Teikyo Heisei University, Tokyo, Japan,   Faculty of Civil Engineering, Thuyloi University, Hanoi, Vietnam
Published: May 2021

This study aims to improve the accuracy of landslide detection in satellite images by combining two object detection models based on a faster region-based convolutional neural network (Faster R-CNN) with a classification decision tree. The proposed method combines the predicted results from the two Faster R-CNN models and classifies their features with a classification decision tree to generate a bounding-box that surrounds the landslide area in the input image. The first Faster R-CNN model is trained by using a training set of color images (RGB images). The second model is trained by using grayscale images that represent digital elevation models (DEMs). The results from both models are used to construct features for training a classification decision tree. The resulting bounding-box is selected from the following four classes: the box obtained from the RGB model, the box obtained from the DEM model, the intersection of those two boxes, and the smallest box that contains the union of them. The evaluation results show that the proposed method is better than the RGB model in terms of accuracy, precision, recall, F-measure, and Intersection-over-Union (IoU) score. It is slightly better than the DEM model in almost all evaluation metrics, except the precision.
Surviving “la lucha” in Ciudad Juárez. An anthropological reflection on the cuban community in Ciudad Juárez, México
Authors: Morales Stephanie Alexandra , Vazquez Victor Manuel
Published: May 2021

The following article presents a brief anthropological and historical reflection based on the Cuban community in Ciudad Juarez, Chihuahua, Mexico. Additionally, we discuss important historical aspects that have contributed to the development of the Cuban community in the El Paso, TX – Ciudad Juárez, CH border, such as the migrant caravans that occurred between 2017-2019 and the migratory policies that have been put into effect. Furthermore, we present an ethnographic analysis on the migration experience of certain participants, placing an emphasis on created networks, and expanding on the concept of community through spatial solidarity and survival in Ciudad Juárez
La medición de la creatividad en destinos urbano-culturales españoles
Authors: Pulido-Fernández Juan Ignacio , García Suárez José Antonio , Casado-Montilla Jairo , Rodríguez-Díaz Beatriz
Published: May 2021

Este artículo propone una metodología para la medición del peso específico de la creatividad en los destinos turísticos urbano-culturales. Para ello, recurre al empleo de un índice sintético agregado basado en el DP2 (distancia al peor). Dicho índice, denominado Creacity, aplicado a las ciudades turísticas culturales españolas, permite conocer cuán creativos son estos sistemas locales a través de tres áreas: la espacial, ambiental e institucional. A partir de los indicadores generales y parciales, establece matrices creativas de cada una de las áreas estudiadas, determinando las ventajas y desventajas creativas de los sistemas analizados. La selección de las distintas variables que componen el Creacity se obtiene del análisis de la literatura científica, que parte de un itinerario sobre la epistemología del pensamiento divergente, abordando la idea de ciudad creativa y su adaptación al turismo. Siendo el índice obtenido refrendado por un panel de expertos, a través de un Delphi. Los resultados ponen de manifiesto la importancia de las clases creativas y la existencia de un ambiente de tolerancia, calidad de vida y participación ciudadana en el que se ubican espacios culturales y creativos que fomentan el desarrollo de la creatividad.