bluuebunny/crossref_metadata_2025 huggingface dataset:
Presencia y transfiguración en la imagen de culto oriental
Authors: Moya Ruiz Albert
Published: May 2019

Presencia y transfiguración constituyen en el oriente cristiano dos conceptos clave de la teología del icono a partir de los cuales pueden establecerse las distintas funciones que Oriente atribuye a la imagen de culto cristiana. Vinculadas a la teológica dogmática y enmarcadas en el misterio de la Encarnación de Cristo, estas dos nociones condensan tanto las enseñanzas y exigencias de la tradición teológica de los Padres de la Iglesia, basadas esencialmente en la lógica de la deificación, como la fundamentación ontológica de la imagen de culto asentada en la anámnesis y el testimonio presencializante del prototipo en la imagen.
Contemporary Ecology and Augustine on Creation
Authors: Ferraren Renacia Mark Rochelle
Published: May 2019

Agustín de Hipona, a pesar de su reputación como una de las figuras más importantes de la teología occidental, no es una figura popular en las discusiones teológicas actuales sobre temas ecológicos. Este artículo busca saber por qué. Investiga sobre cómo algunos críticos contemporáneos interpretan las doctrinas de Agustín sobre la creación y la Trinidad, que pueden haber contribuido a hacer que Agustín sea menos relevante en temas relacionados con la ecología. Si bien el artículo no discute directamente la posible mala interpretación del esquema de Agustín por parte de algunos teólogos contemporáneos que tienen una gran preocupación ecológica, ofrece una interpretación alternativa de Agustín que puede arrojar luz positiva sobre las doctrinas clásicas que pueden ayudar a promover la llamada «conversión ecológica» en los tiempos modernos.
Eléments de morphologie et de syntaxe de la langue hourrite. Destinés à l’étude des textes mittaniens et anatolo-hittites
Authors: Fournet Arnaud
Published: May 2019

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Les lieux de rédaction des lettres de Paul d’après la tradition manuscrite
Authors: Amphoux Christian-Bernard
Published: May 2019

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Le souverain chaldéen assimilé au monde souterrain (arallû) en Hb 2,16a ?
Authors: Loiseau Anne-Françoise
Published: May 2019

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L’individu et le péché par inadvertance : une comparaison de rites expiatoires en Mésopotamie et en Israël ancien
Authors: Foguenne Émilie
Published: May 2019

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Dadisho‘ Qatraya’s Letter to Ab-kosh: the text according to MS Baghdad Archbishopric of the East n° 210 with critical notes and a translation
Authors: Phillips David
Published: May 2019

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Les premiers psaumes en berbère tachelhit. Une collection de prières chrétiennes dans l’espace nord-africain au XXe siècle
Authors: Afif Naïma
Published: May 2019

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L'édit de Milan entre tradition et renouveau
Authors: Maraval Pierre
Published: May 2019

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Béthanie, de l’autre côté du Jourdain
Authors: Amphoux Christian-Bernard
Published: May 2019

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Wybory prezydenckie 2015 – kandydaci i ich programy gospodarcze
Authors: Kacperska Magdalena
Published: May 2019

Celem artykułu jest krótka prezentacja sylwetek wszystkich zarejestrowanych kandydatów w wyborach prezydenckich z 2015 roku oraz ich najważniejszych postulatów w sferze gospodarczej, a także szersza analiza programów wyborczych w tym zakresie zaprezentowanych przez dwóch kandydatów, którzy uzyskali największe poparcie i spotkali się w drugiej turze wyborów, czyli Andrzeja Dudy i Bronisława Komorowskiego. Analizie poddane zostaną programy w części odnoszącej się do sfery gospodarczej, ze szczególnym uwzględnieniem kwestii poświęconych zatrudnieniu i przedsiębiorczości.
Partycypacja mieszkańców na poziomie lokalnym – przykład Elbląga
Authors: Sidorkiewicz Krzysztof
Published: May 2019

Celem artykułu była charakterystyka udziału mieszkańców Elblągaw sprawach miasta. Dokonano analizy zasad budżetu obywatelskiego, scharakteryzowano zasady inicjatywy uchwałodawczej oraz konsultacji społecznych. Duże znaczenie dla mieszkańców Elbląga miało referendum z 2013 roku w sprawie odwołania prezydenta miasta i rady. Ze względu na obszerność tego wątku nie uwzględniono w tekście. Wspomniano także o inicjatywie lokalnej, do której zostały wprowadzone procedury, ale jeszcze nie było konkretnych działań. Analiza treści obejmowała uchwały Rady Miejskiej Elbląga, zarządzenia prezydenta miasta, strategię rozwoju miasta, raporty, materiały Biura Rady Miejskiej w Elblągu. Autor przeprowadził także wywiady z przedstawicielami organizacji pozarządowych oraz samorządu terytorialnego. W końcowej części sformułowano wnioski. Najważniejszym było stwierdzenie, że w Elblągu występują wszystkie istotne elementy partycypacji społecznej, ale należało w dalszym ciągu wzmacniać mechanizmy, stosować różnorodne formy komunikacji i informacji oraz zachęcać obywateli do coraz większej aktywności lokalnej.
Division of shale sequences and prediction of the favorable shale gas intervals: an example of the Lower Cambrian of Yangtze Region in Xiuwu Basin
Authors: Li Zhuo , Zhang Kun , Song Yan , Jiang Zhenxue , Liu Xiaoxue , Jiang Shu , Jia Chengzao , Huang Yizhou , Liu Weiwei , Wen Ming , Wang Pengfei , Liu Tianlin , Xie Xuelian , Shan Chang’an , Wang Xin
Published: May 2019

It is a common method to use sequence stratigraphic theory to identify favourable intervals in hydrocarbon exploration. The Lower Cambrian shale of Well Jiangye-1 in Yangtze Region in Xiuwu Basin was chosen as the research object. The content of excess silicon of siliceous minerals in shale was calculated quantitatively, and the concentration distribution of Al, Fe, Mn showed that the excess silicon is of hydrothermally origin and the shale deposited in an environment with hydrothermal activity. Using U/Th values in the study, combined with lithology and logging data, in order to divide sequences of the Lower Cambrian shale in Yangtze Region in Xiuwu Basin. The result shows that the shale of the Lower Cambrian shale is recognized as 1 2nd sequence (TST-RST, TST = Transgressive systems tract; RST = Regressive systems tract) and then further subdivided into 5 3rd sequences (SQ1-SQ5). During the deposition of SQ2 and SQ3, hydrothermal activity was active, and their excess silicon content was generally above 20%-30%. Rising sea level and active hydrothermal activity were beneficial for the enrichment of siliceous minerals and organic matter. Based on the comparison of the reservoir parameters, it tells that SQ2 and SQ3 have relatively higher content of TOC, higher content of brittle minerals (such as siliceous minerals, carbonate minerals and so on), larger effective porosity and higher content of gas, which make it as the most favourable intervals of the Lower Cambrian in Xiuwu Basin.
MEMBUMIKAN PANCASILA ARTI PENTING MENEGAKKAN HAM SEBAGAI TAMENG TOLERANSI KEBERAGAMAN
Authors: Wicaksono Indra
Published: May 2019

Pentingnya membumikan pancasila guna menegakkan HAM sebagai tameng toleransi keberagaman. Dengan mengetahui tentang intoleransi dapat melanggar HAM dan mengetahui peran sila-sila dalam pancasila guna menghadapi intoleransi keberagaman. Namun demikian tafsiran itu dijabarkan melalui pasal-pasal dalam peraturan perundang-undangan salah satunya seperti yang dinyatakan dalam pasal 28E UUD NRI 1945 dan didalam pasal 22 ayat (1) UU No. 39 Tahun 1999 tentang Hak Asasi Manusia. Jika hak yang dimaksud dalam pasal tersebut dirampas oleh orang lain maka yang akan terjadi adalah intoleransi keberagaman yang melanggar HAM. Sila dalam pancasila itu sendiri memiliki peran penting dalam menghadapi intoleransi ini. Lima sila pancasila tersebut merupakan wujud dari persatuan warga negara Indonesia atas perbedaannya.
Recurrencia de sismos en el Valle Central de Costa Rica
Authors: Quintero-Quintero Ronnie , Porras-Espinoza Hernán
Published: May 2019

En los periodos 1910-1912, 1951-1955 y 1990-1993 se localizaron en el Valle Central de Costa Rica sismos superficiales importantes, por su magnitud y daños causados en la población, estructura y paisaje. La recurrencia de estos sismos es de aproximadamente cada 40 años y sucedieron entre 7 y 10 años, después de haber ocurrido los sismos mayores de subducción de 1904, 1941 y 1983 en la Península de Osa. En la zona central del país, también han ocurrido sismos esporádicos con magnitud de moderada a fuerte y que han causado daños. Por ejemplo, el sismo de Orotina de 1924, Pérez Zeledón de 1983, de Cinchona 2009 y Capellades del 2016. Si consideramos todos los sismos más importantes que han ocurrido en el interior de la parte central del país desde inicios del siglo XX y que han causado daños en el Valle Central; el período de recurrencia es de 21 años y la probabilidad de que el próximo se presente antes del 01/01/2038; 21 años después de haber ocurrido el sismo de Capellades el 01/12/2016, es mayor a 0.86 con un intervalo de confiabilidad del 95% de [0.71, 0.98].
Copeptin levels in patients with coronary artery ectasia
Authors: Yavcin Ozkan , Askin Lutfu , Seçen Ozlem , Turkmen Serdar , Akturk Erdal , Tanriverdi Okan , Necati Dagli Mustafa
Published: May 2019

Background and aims

The etiology and pathophysiology of coronary artery ectasia (CAE) has not been fully elucidated. A rapid rise in plasma copeptin has been observed in cardiovascular diseases, stroke, sepsis, and shock. This increase has diagnostic and prognostic value. The aim of this study was to investigate whether copeptin has a relationship with CAE.

Methods

This observational prospective study was carried out between October 2012 and March 2013 in the cardiology catheter laboratory with the inclusion of 44 subjects with a diagnosis of CAE and 44 age- and gender-matched individuals with normal coronary arteries. Blood samples obtained from the patients were stored at −70 °C until analysis and copeptin levels in sera were measured by ELISA.

Results

This study comprised 88 study participants, among whom 44 were patients meeting ectasia criteria [mean age: 58.0 ± 11.5 years; 59% (n = 26) male], and 44 were control subjects with angiographically normal coronary anatomy [mean age: 49.2 ± 10.1 years; 30% (n = 13) male]. Copeptin levels were similar between the groups (p > 0.05). In addition, there was no correlation between copeptin levels and CAE.

Conclusion

In this study, it is examined that copeptin levels were not elevated in CAE patients.
Variação da entropia total para um corpo em contato com reservatórios térmicos: o caminho da reversibilidade
Authors: Freitas Lucas R. D. , Pereira Luiz Felipe C.
Published: May 2019

Resumo A segunda lei da termodinâmica é um dos tópicos de física fundamental menos compreendidos por estudantes e profissionais de ciências exatas e engenharias, talvez devido à sua sutileza e abundância de enunciados. Neste trabalho analisamos a variação de entropia de um sistema isolado, formado por um corpo de capacidade calorífica C(T) e um ou mais reservatórios térmicos, quando a temperatura absoluta do corpo varia através da troca de calor com os reservatórios de maneira sucessiva. Obtemos uma expressão geral para a variação de entropia total, ΔS(0), em função de C(T) e do número de reservatórios térmicos N. Mostramos numericamente que ΔS(0) diminui à medida de N aumenta e, considerando que no limite N → ∞ a diferença de temperatura entre reservatórios sucessivos é infinitesimal, mostramos analiticamente que lim N → ∞ Δ S ( 0 ) = 0, resultado esperado da segunda lei da termodinâmica para um processo quase-estático reversível. Por fim, sugerimos que a demonstração de que a variação da entropia total é nula quando a temperatura do corpo varia quase-estaticamente pode servir de base para uma avaliação do entendimento da segunda lei da termodinâmica por parte de estudantes de graduação em ciências exatas e engenharias.
Learning Preferences and Multiple Intelligences: An Observational Study in Brazilian Studies
Authors: Biscardi João Márcio dos Santos , Costa Henrique Rodrigues da , Petterle Ricardo Rasmussen , Fraga Rogério de
Published: May 2019

ABSTRACT In recent years, Multiple Intelligences (MI – bodily-kinesthetic, spatial, intrapersonal, interpersonal, linguistic, logical-mathematical, musical, and naturalist) and Learning Preferences (LP – visual, aural, read/write, kinesthetic, and multimodal) have been intensely studied throughout the world. In this context, plenty of tools that evaluate such parameters have been created and later improved over the past decades. Nowadays, the necessity for optimal learning strategies and more individualized teaching continues to rise, reinforcing the importance of identifying individual strengths and cognitive preferences. Objectives to analyze the distribution of MI – and how they influence one another – and LP in medical students at the Federal University of Paraná (UFPR), Brazil. The results could lead to improvements in the educational setting. Methods a descriptive cross-sectional study involving UFPR medical students of all 12 semesters, who were analyzed through questionnaires with regard to both their MI (“Multiple Intelligences Checklist for Students”) and LP (“Visual, Aural, Read/Write, Kinesthetic – VARK – Questionnaire”). Results a total of 1054 questionnaires were processed (527 students). Intrapersonal (71 ± 10.5), logical-mathematical (69.3 ± 14), and linguistic (68.4 ± 11.8) intelligences predominated, whereas naturalist achieved the lowest mean score (47.3 ± 19.5). Positive correlations were identified between all of the MI. Regarding the LP, the multimodal (42.3%) was the most frequent, followed by visual (21.3%), aural (18.6%), kinesthetic (11.2%), and read/write (6.6%). When both cognitive theories were correlated, the following associations prevailed: visual LP and intrapersonal intelligence; aural LP and interpersonal intelligence; read/write LP and logical-mathematical intelligence; kinesthetic LP and logical-mathematical intelligence; and multimodal preference and intrapersonal intelligence. Conclusions intrapersonal intelligence achieved the highest overall scores, followed by logical-mathematical and linguistic. Naturalist intelligence achieved the lowest scores in terms of semester, cycle, and overall analysis. All MI were positively correlated. Multimodality was the most commonly observed LP, whereas the read/write preference was the least frequent. Correlations initially expected between MI and LP were confirmed. As for future perspectives, it is expected that teachers and education managers adapt current teaching strategies in order to meet the students’ preferences. Together, MI and LP indicate that the focus should not rely on how smart a given person is, but in which ways.
DELINEATION OF SOCIAL PRACTICES: THE METHODOLOGICAL ANALYSIS
Authors: Kuntsevska A.
Published: May 2019

Defining the boundaries of practice is an important prerequisite for the developing of professional responsibility and a crucial condition of raising awareness and understanding of professional tasks and responsibility of specialists in social pedagogy. Through time in different countries the professional boundaries of social pedagogy have been constantly changing. That's why the concept of social pedagogy is different from country to country. In Ukraine we have an issue of defining clear and understandable boundaries of socio-pedagogical theory and practice. Thus, the aim of given article was to analyze origins and main tendencies of social pedagogy and close practices (social work and pedagogy) in European countries to establish basic parameters.

To understand the difference between three social practices, there have been defined basic distinguishing criteria: the idea; the main prerequisite; specific research tasks; specific practical tasks and general characteristic of technologies.

The main idea of pedagogy is cognition, while social work practice comes from an idea of integration and social change. And, ultimately, the main idea of social pedagogy is inclusion and empowerment to promote individuals' social functioning, participation, social belonging and social competence. The specific scopes of its responsibility are: problems of inclusion in social processes and life managing.

The prerequisite of classical pedagogy is relatively stable social system and established social values / standards. The basic precondition of social work are social problems resulted from violation of human rights, social injustice or difficult/extreme circumstances. And essential for appearance and developing of socio-pedagogical ideas was social injustice as a result of social inequality. Therefore, the main tasks of those social practices are differed as well. Pedagogy have to design the best possible conditions for the cognition and thinking processes development. Social work has to elaborate and improve new social conditions of life and human well-being, while the main task of social pedagogy is designing an individuals', groups' and communities' life perspective.
SIMULATION AS A TEACHING TOOL FOR ACQUISITION CLINICAL SKILLS OF NURSING STUDENTS
Authors: Šakalytė Danguolė
Published: May 2019

Nursins education is organized with theoretical training and in practical training, it is required to provide an experience for enhancing the clinical practice performance in addition to the basic nursing technique. Simulation is growing in popularity in nursing education for augmenting learning, teaching patient safety,  teaching resuscitation and teaching clinical skills. The purpose of this research is to examine the effect of simulation as a teaching tool for  acquisition clinical skills of of Utena University of Appling Science General Practice Nursing program‘ students. A quasi-experimental, pree-post test design was used to examine the effectiveness of simulation scenario on knowledge acquisition, knowledge retention, and self-efficacy in 4nd-year students in Utena University of Appling Science General Practice Nursing program.
VALUES IN EDUCATIONAL PRACTICE: EXPLORING LATVIA’S TEACHERS’ PERSPECTIVES
Authors: Delijeva Gunita
Published: May 2019

An increasing importance in today's education is placed on emphasising values. Values provide a reference in people’s life and serve as criteria, when making daily choices. However, values are often unconscious and rarely discussed among teachers. Hedonic values that are oriented towards individualism have become self-evident in the society, while classical values are being pushed in the background. The aim of this study is to identify teachers’ perspectives on values within an educational practice. A survey of teachers working in municipal schools and preschools in Latvia was conducted. An in-depth examination was reached by implementing interviews with educational experts. The values definied in the Republic of Latvia recent legislative documents were used in designing the content of a questionnaire. Data were analysed using descriptive and inferential statistics as well as qualitative content analysis. Implementation of values education is influenced by regulatory framework, its emphasising in educational practice and individual teacher’s personal judgement. The present-day situation in Latvia’s education reveals a discrepancy between the legislation requirements and the educational practice. Unfortunately some teachers lack confidence in the content of values defined in the Constitution (the Satversme) of the Republic of Latvia, namely – in the Latvian folk wisdom, universal human and Christian values. Thus it is important to set common values in upbringing in a family and in an educational institution. By defining and emphasising values at the institutional level, they become a subject of reflection and discussion among teachers and parents.
Pedagogia Universitária e Prática Didática: um Relato de Experiência
Authors: De Jesus Samuel José Amaral
Published: May 2019

A Universidade é um espaço que alia conhecimentos, competências e atitudes, em uma conexão direta com a identidade do sujeito. Nesta, o docente tem o papel primordial de mediar a sistematização de conhecimentos, permitindo assim a sua troca e contribuindo para um aprendizado significativo. No entanto, este contexto é marcado por diversas barreiras, principalmente, no que diz respeito às práticas pedagógicas. Com o objetivo de discutir o processo de construção da didática universitária e a importância da inovação, este relato de experiência foi construído a partir de uma microaula ministrada durante o componente curricular Didática do Ensino Superior. Para tal, foi realizada a elaboração da aula, que ocorreu por meio da construção de um plano específico e orientado, o qual culminou na explanação do conteúdo, com práticas condizentes ao tema e o emprego de elementos inovadores. Após a apresentação, foi aberto um espaço para a avaliação do público, que se realizou pela exposição de críticas (ou de análises) sobre os diversos pontos observados. Em suma, a microaula foi uma oportunidade para vivenciar como se planeja e atua no Ensino Superior. Por outro lado, também contribuiu de uma forma significativa para a construção enquanto docente, em relação aos procedimentos metodológicos. Palavras-chave: Docência. Inovação. Didática. AbstractThe university is a space that combines knowledge, skills and attitudes, in a direct connection with the subject’s  identity . In it, the professor has the primary role of mediating the  knowledge systematization, thus allowing its exchange and contributing to meaningful learning. However, this context is marked by several barriers, especially regarding pedagogical practices. With the objective of discussing the construction process of university didactics and the importance of innovation, this experience report was constructed from a micro class taught during the curricular component Didactics of Higher Education. For this, the lesson was elaborated, which was done by means of the construction of a specific and oriented plan, which culminated in the content explanation, with practices consistent with the theme and the use of innovative elements. After the presentation, a space was opened for the public evaluation, which was the exposure of criticism (or analysis) on the various observed points. In short, the  micro class was an opportunity to experience how to plan and act in higher education. On the other hand, it also contributed significantly to the construction as a professor, in relation to the methodological procedures. Keywords: Teaching. Innovation. Didactics.
PROTECCIÓN DE LAS COMUNIDADES ÉTNICAS EN EL SISTEMA INTERAMERICANO: CASO RIOSUCIO – CHOCÓ
Authors: Ribero Salazar Katherine Paola
Published: May 2019

Esta investigación tiene como objetivo identificar los vacíos estatales derivados de la ausencia de mecanismos suficientes para una reparación efectiva de los habitantes afrodescendientes del municipio de Riosucio (Chocó), que han sido víctimas del conflicto armado.

Para cumplir con el objetivo planteado, se procede mediante una metodología de análisis documental y jurisprudencial de sentencias de la Corte Interamericana de los Derechos Humanos y de la Corte Constitucional, así como informes estatales, reseñas testimoniales y fuentes secundarias. A partir de allí, se realiza un estudio de caso de la comunidad de la cuenca del Río Cacarica, en Riosucio (Chocó).

El análisis de los documentos de estudio, testimonios y la jurisprudencia proferida al respecto a nivel nacional e internacional, permite establecer que el Estado, como principal protector de derechos fundamentales, ha faltado a los compromisos legales adquiridos respecto de la reparación a la comunidad desplazada de la cuenca del Río Cacarica, donde acontecieron operaciones militares contra la población civil, una de ellas denominada ‘Operación Génesis’.

En definitiva, este artículo concluye que el Estado no cumple los compromisos relacionados con la reparación de víctimas y carece de instrumentos internos para garantizar una reparación satisfactoria y total de los afectados.
Motivation and The Concept of Self-Regulation: Theory and Implications for English Language Teaching and Learning in Colombia
Authors: Peña Dix Beatriz
Published: May 2019

Motivation is a complex concept, particularly when applied to the learning of a second or foreign language. For this reason and due to the importance that the notion of motivation has in the field of education, this topic has generated great interest among teachers and researchers in L2, making this one of the central concerns in socio-cognitive motivational approaches.  For this reason, the main aim of this article is to critically examine the theory and the implications of motivation in relation to the concept of self-regulation or autonomy in foreign language teaching and learning. Frequent reference is made to the case of the teaching of English in the Colombian context in order to exemplify some of the definitions and issues related to motivation in the foreign language classroom.
Educación sexual e incertidumbre entre el profesorado. Análisis de la implementación del Programa de Educación Sexual Integral en los Institutos Provinciales de Educación Media de la ciudad de Córdoba (Argentina)
Authors: Iosa Tomás
Published: May 2019

In Argentina, the 26.150 Act of educational reform sanctioned in 2006 created the Integral Sex Education Program (PESI). This policy aims at the transformation of pedagogical practice in sex education and at guaranteeing equal opportunities for boys and girls, by transcending family socialization in gender and sexuality issues. Nevertheless, given some structural patterns of the educational system that limit the possibilities for adaptation to this reform by teachers, we decided to study how they perceive and implement this reform. Focusing on public middle school teachers from Cordoba city, this paper analyzes general trends on the practice of sex education before the sanction of this law as well as patterns of teacher adaptation to the Integral Sex Education Program. Data were generated by theoretical sampling survey. Our analysis reveals a paradox: the institutionalization of a public policy, whose goal is to increase equity by promoting an educational practice, resulted, in many cases, negatively evaluated by teachers. This article thus considers a typical topic in political sociology of education and identifies factors generating a negative representation by teachers of this public policy.
Una comparación entre cursos de Física para estudiantes de Medicina y Biología utilizando diseños centrados en el profesor o en los estudiantes
Authors: Hernández Carola , Leidy Chad , Olarte Juan Carlos , Valero Paola
Published: May 2019

This article presents the findings of research conducted to compare the results obtained in the first Physics course for students of Medicine and Biology, comparing two class designs: the original one, based on teacher-centred master lectures and a new student-centred pedagogical model inspired in the Project Organized – Problem Based Learning - PO–PBL model developed at Aalborg University in Denmark. The analysis shows important differences in at least three aspects: 1) the levels of achievement of the students and the types of learning they show; 2) the perception of the students in relation to their professional development; and 3) the learning dynamics given in the course for each proposal. These results suggest that the PO-PBL system has advantages compared to the traditional system in the three aspects analyzed. This opens up the possibility of new approaches to the teaching of Physics to students from other scientific disciplines.
Procedure for Measuring the Weight Fraction of Products of Catalytic Pyrolysis of Ethylbenzene
Authors: Yakovleva E. Yu. , Shanshan Yan , Pai Z. P.
Published: May 2019

A capillary column with functionalized poly(1-trimethylsilyl-1-propyne) (PTMSP/N2O) was proposed to use for detecting products of catalytic pyrolysis of ethylbenzene. The capillary PTMSP/N2O column separated selectively light C1–C2 (methane, ethane, ethylene, acetylene) and aromatic (benzene, toluene, ethylbenzene, styrene) hydrocarbons. A procedure for gas-phase measuring weight fractions of light C1–C2 and aromatic hydrocarbons was developed. The analytical measurement range was 2.9·10–8 to 1.2·10–1 mg/mL for light C1–C2 components and 3.5·10–11 to 4.0·10–3 mg/mL for liquid components. The analytical error margin at repetition ranged from 1.9 % to 4.7 %.
Catalytic Fluidized-Bed Co-Combustion of Peat and Anthracite
Authors: Yazykov N. A. , Simonov A. D. , Dubinin Yu. V. , Zaikina O. O.
Published: May 2019

Results of the studies of catalytic combustion of peat, anthracite, as well as the mixture at the peat to anthracite weight percent ratio 40/60 are discussed. The degree of the mixture burning-off was shown to increase when peat evolving large quantity of volatile substances is added to anthracite. The burn-up degrees of the solid fuel particles less than 1.25 mm in size were 98.2 % of peat, 50.9 % of anthracite, 74.2 % of the peat and anthracite mixture at 700–750 °C and 1 m height bed of the industrial aluminum-copper-chromium oxide catalyst IC-12-70. In combusting coarse particles (equivalent diameter 11.6–18.6 mm) of molded peat and anthracite mixture, the burn-up degree was 80.5 % at the top of the fluidized catalyst bed. The burn-up degree of the coarse particles fed to the bottom of the fluidized bed was estimated with allowance for the burn-up degree of fine particles moving through the bed. With the coarse molded particles of the peat and anthracite mixture fed to 1 m height catalyst bed, the burn-up degree was shown to reach no less than 95 %. When the catalyst used is 2 mm in size, the peat and anthracite particles comprised in the molded fuel must be no more than 1–1.5 mm in size in order to prevent from ash accumulation in the fluidized catalyst bed.
Design and performance evaluation of spheroid geometry for brain PET scanner using Monte Carlo modeling
Authors: Sheikhzadeh Peyman , Ghadiri Hossein , Geramifar Parham , Ghafarian Pardis , Reza Ay Mohammad
Published: May 2019

Introduction: There has been a curiosity about the spheroid geometry for PET scanners developments since several years ago, therefore in this study, we are aiming to evaluate the performance of this geometry and compare its performance with cylindrical geometry using Monte Carlo simulation. Methods: We simulated a spheroid geometry with a radius of 199 mm, patient bore with of radius of 175 mm, which is compatible with brain size. In second design, cylindrical geometry was simulated with transaxial FOV and ring radius of 175 mm as well. Photon detection efficiency (PDE), NEMA line source sensitivity, spatial resolution and Derenzo phantom image quality were analyzed. Results: We obtained PDE about 21.7% versus 23.8% in 250-750 keV and 19.5% versus 21.3% in 410-613 keV for point source in center of FOV for spheroid and cylindrical PET respectively. The results of NEMA sensitivity measurements indicate 3.29 kcps/MBq versus 3.64 kcps/MBq for spheroid and cylindrical designs. The spatial resolution (FWHM) calculations using MLEM reconstruction algorithm show around 1.6 mm for transvers and axial resolution for point source placed in center of FOV for both scanners. Also we found for spheroid and cylindrical designs 4.8 and 2.7 mm versus 4 and 3.6 mm as transvers and axial mean resolution for off-center point sources. Conclusion: Performance evaluation study indicates that the spheroid geometry delivers better axial resolution whereas cylindrical design can still provide higher sensitivity and transvers spatial resolution than the spheroid geometry PET with same scanner bore size.
Incidental thyroid uptake during 99mTc-methylene diphosphonate bone scintigraphy in oncologic patients
Authors: Sinisa Stojanoski , Nevena Manevska , Anamarija Jovanovska
Published: May 2019

Introduction: Extraosseous accumulation of 99mTc – methylene diphosphonate (MDP) may be due to neoplastic, dystrophic, hormonal, inflammatory, ischemic, traumatic or excretory disorders. 99mTc-MDP incidental thyroid uptake is not frequent and is possibly caused by the presence of dystrophic or metastatic calcification, biopsy procedure and presence of benign or malignant thyroid nodules. To analyze the etiological factors leading to 99mTc-MDP uptake in the thyroid gland. Methods: Fifty patients (pts), 19 females (38%) and 31 males (62%), 62±12 years, with no pervious history of thyroid disease, were included in the study. In the period January 2016 – January 2018, all pts underwent MDP bone scintigraphy due to oncologic indication and incidental tracer uptake was noted in the region of the thyroid gland. Ultrasonography (US) was performed in all pts. Patients with detected nodules underwent 99mTc-pertechnetate scintigraphy and fine needle aspiration cytology (FNAC). Thyroid hormone and autoantibodies levels were also analyzed. SPECT/CT procedure was performed in all patients to precisely localize the MDP uptake. Results: Thirty-nine patients had calcifications in the thyroid gland (29 with microcalcifications and 10 with macrocalcifications). In 23 patients, thyroid nodules were detected. 99mTc-pertechnetate scintigraphy presented 15 cold nodules and 8 nodules with increased tracer uptake. FNAC in 3 patients presented nuclear anisocariosis, with Hurthle cell metaplasia, and surgery was advised. In 11 patients, thyroid cartilage calcifications were detected. Conclusion: Incidental findings of thyroid 99mTc-MDP accumulation during bone scintigraphy indicate presence of additional, previously unexpected, active disease processes.
Method of Selecting a Function to Outsource for a Mechanical Engineering Enterprise
Authors: Tretyakova V.A.
Published: May 2019

The paper presents a method of selecting a function to outsource for a mechanical engineering enterprise. The method is based on a bi-parametric selection criterion. The first parameter of the criterion considers the strategic importance of the function transferred; the second one considers the degree to which the function transferred affects the enterprise activities in general. This second parameter makes it possible to use an unlimited number of potentially importance-weighted evaluation metrics that the mechanical engineering enterprise will identify individually. We propose to mainly use qualitative metrics for this type of estimation. Originally various measurement scales may be set up, which is especially convenient when evaluating; later these scales are converted to a unified measurement scale. The method presented makes it possible to determine the priority of function transfer, that is, isolating those functions that must be outsourced first
Self-Similar Heat Transfer Processes in a Radiation-Transparent Solid Body Containing an Absorptive Inclusion with the System Featuring Phase Transitions
Authors: Attetkov A.V. , Volkov I.K. , Gaydaenko K.A.
Published: May 2019

The paper considers the problem of determining temperature field parameters in a radiation-trans-parent isotropic solid body containing an absorptive inclusion, when the system features phase transitions. We identify sufficient conditions, meeting which ensures the possibility of self-similar heat transfer process taking place in the system under con-sideration. We qualitatively investigated physical properties of the self-similar process under study and determined its specifics. We provide a theoretical validation of implementing a thermostating mode of the moving phase transition boundary in the heat transfer process investigated
Form-Relieving Method for Thread Mills
Authors: Malkov O.V. , Pavlyuchenkov I.A. , Smirnov Al.A.
Published: May 2019

The paper presents a form-relieving method for thread mill teeth by means of a grinding wheel rotated about two axes, which significantly simplifies design process for tool manufacturing, since combining rotation angles makes it possible to use the same standard grinding wheel to profile thread mills of several size classes, accounting for acceptable accuracy class for the thread being processed. The algorithm and software proposed, based on the mathematical technique we developed, allow the user to compute the grinding wheel positioning angles to obtain the desired relief angles for a thread mill. We present an example of computing the grinding wheel rotation angles for a set of input data
Determining Anisotropic Material Properties by Means of Simulating Transmission in a Planar Waveguide
Authors: Vintaikin B.Е. , Kondakov O.V. , Ivanov K.G.
Published: May 2019

The paper presents investigation results concerning a magneto-optic effect occurring in the far infrared range in bismuth. The investigation involves recording transmission in a planar waveguide located in a variable magnetic field. We ran a numerical simulation of the magneto-optic spectrum shapes in the relaxation-time approximation and determined a set of parameters for the electron energy spectrum in bismuth in the effective mass tensor approximation. We found that there is a discrete function describing how relaxation time and charge carrier concentration depend on the magnetic field magnitude. The function stems from the presence of electrons with different effective masses, which are concentrated in the three equivalent L points of the Brillouin zone, and holes in the T point of the Brillouin zone, which have topologically unconnected anisotropic constant energy surfaces
Investigation of the speed of the small-sized spacecraft control algorithm using reaction wheels
Authors: Akimov I.O.
Published: May 2019

The paper considers a mathematical model of spacecraft motion in quaternions, taking into account the control constraints on the kinetic and control torque of the reaction wheel. We analyzed current approaches to the search for reaction wheel control factors providing quasi-optimal performance. Boundary conditions for different types of reaction wheel control have been obtained analytically. Furthermore, we introduced our own approach to the study of the effective control coefficients of the two term controller of the reaction wheel. By means of the new approach, the maneuver was successfully analyzed without any control constraints on the kinetic and control torque of the reaction wheel, and the dependences of the control coefficients were obtained providing the required speed for the considered case. Findings of research show that the dependences of the control coefficients obtained provide the highest performance for any initial angles of rotation in comparison with the previously obtained theoretical dependences of the coefficients
Pre-Primary Education: Its Impact on Academic Achievement of the Learners Learning at an Elementary Stage in Odia Language Subject in Odisha
Authors: Puhan Rasmi Ranjan , Ray Swagatika , Das Sunakar
Published: May 2019

This paper discussed the impact of Pre-Primary Education on the academic achievement of the learners learning at an elementary stage in Odia language subject. The study dealt with the Descriptive Survey method in order to study the problem. The sample of 120 elementary learners of the class consisted of 60 boys and 60 girls using random sampling technique for this study. The investigator prepared a tool of Achievement test questionnaire with the help of the investigator and experts. The test questionnaire was prepared on Odia language subject for Class-I. This test measured the performance of the learners with and without Pre-Primary education in Odia Language subject. For the present study, the investigator used statistical techniques such as mean, standard deviation and t-test in order to compare the academic achievement of the learners. The findings of the study revealed that the learners learning in elementary level receiving Pre-Primary Education do better in their oral and written test in Odia Language subject than the learners receiving no Pre-Primary Education. There exists a significant difference between the performance of boys learning at elementary school level in Odia language subject both written and oral test with and without receiving pre-primary education. There exists a significant difference between the achievement of girls learning at elementary school level in Odia language subject both written and oral test with and without pre-primary education.
K-Means Clustering of Self-Organizing Maps: An Empirical Study on the Information Content of Self-Classification of Hedge Fund Managers
Authors: Deetz Marcus
Published: May 2019

With the implementation of the 2-step approach according to Vesanto & Alhoniemi (2000), this article extends the procedure of visual evaluation of the Kohonen Maps usually chosen in the hedge fund literature for classification with Self-Organizing Maps. It introduces an automated procedure which guarantees a consistent combination of adjacent output units and thus an objective classification. The practical application of this method results in a reduction of the strategy groups specified by the database. This is also accompanied by a significant reduction in the Davies Bouldin Index (DBI) of the SOM partitions. Since a small dispersion within the clusters and large distances between the clusters lead to small DBIs, a minimization of this measure is desired. This significantly better partitioning of SOMs in comparison to the classification of hedge funds into the categorization scheme specified by the database provider can be observed in all examined data samples (robustness analyses). Ultimately, none of the original 23 strategy groups can be empirically validated. Furthermore, no stable classification can be found. Both the number of empirically determined categories (SOM clusters) and the composition of these clusters differ significantly in the subsamples examined. Thus the results essentially confirm the results and conclusions in the literature, according to which the original, self-classified strategy labels of the database providers are misleading and therefore do not contain any information content.
Tam Spektrumlu Gün Işığı Floresan Lamba ile Yapay Işıklandırmanın Marulda Fide Kalitesine Etkisi
Authors: ÖZTEKİN Gölgen Bahar , TÜRE Kevser
Published: May 2019

Amaç:
Bitkiler büyüme ve gelişmeleri için ışığa ihtiyaç duymaktadırlar. Ancak, kış
aylarındaki kısa ve bulutlu gün sayısından kaynaklanan doğal ışık miktarındaki
azalma bitkilerde büyüme ve gelişmeyi sınırlandırmaktadır. Bu durumda
elektriksel yolla yapay ışıklandırma yapılabilmektedir.

Materyal
ve Metot: 2016 yılı Aralık ayında Ege Üniversitesi Ziraat
Fakültesi Bahçe Bitkileri Bölümü fide üretim seralarında yürütülen bu çalışmada,
1-2 gerçek yapraklı genç marul fideleri dikim büyüklüğüne gelene kadar (1)
karanlık koşulda lamba kullanılarak (2) gün ışığı altında lamba kullanılarak ve
(3) gün ışığı (kontrol) altında yetiştirilmiştir. Karanlık koşul fidelerin
üstüne konulan ahşap iskeletin siyah örtüyle kaplanması ile, yapay ışıklandırma
LifeLite negatif iyon yüklü tam spektrumlu gün ışığı floresan lambası kullanımı
ile sağlanmıştır. Fideler bir ay boyunca yetiştirilmiş ve haftada bir defa
marul için kullanılan kışlık besin solüsyonu reçetesine göre hazırlanmış besin
solüsyonu ile sulanmıştır. Dikime hazır hale gelen fidelerde morfolojik
gelişim, biyolojik kütle, klorofil ve renk ölçümleri yapılmıştır.

Bulgular:
Karanlık koşulda lamba kullanımı ile fideler daha uzun boylu ve daha açık
renkli olmuş, ancak fide kalitesi diğer uygulamalardan daha düşük olmuştur. En
iyi fide gelişimi ve kalitesi gün ışığı + lamba uygulamasından elde edilmiş;
bunu gün ışığı uygulaması izlemiştir. Sonuç:
Çalışma sonucunda tam spektrum lamba ile yapılan yapay ışıklandırmanın marulda fide gelişimi ve kalitesini
artırdığı belirlenmiştir.
Revisión de la influencia de la motivación docente en el empleo de las pizarras digitales interactivas
Authors: Rojas Segovia Miriam M. , Romero-Varela Douglas Y.
Published: May 2019

El presente artículo corresponde a la revisión de un tema que pretende otorgar una visión general acerca de los datos recabados sobre el uso de las pizarras digitales interactivas en el desarrollo de las sesiones de enseñanza-aprendizaje que toman como factor determinante la motivación de los docentes. Se realizó una examinación de la literatura disponible en línea para elaborar un análisis de la situación actual de esta innovadora herramienta didáctica y su relación con la predisposición del pedagogo que la emplea, como parte del proyecto final para la asignatura de Investigación Académica en la Universidad Tecnológica del Perú. Luego de la investigación, se llegó a la conclusión de que, a la fecha de edición, no existen suficientes investigaciones que centren su atención en la actitud del profesor, sobre todo en el Perú, por lo que no se puede determinar a cabalidad que exista una relación directa entre ambos aspectos y se incentiva a desarrollar proyectos que consideren la relevancia del educador en el empleo eficiente de la tecnología con el fin de lograr una educación de calidad y adaptada a los estándares de la sociedad de la información emergente.
Comparison of subfoveal choroidal thickness in eyes with CRVO and BRVO
Authors: Tang Fen , Xu Fan , Zhong Haibin , Zhao Xin , Lv Mingliang , Yang Ke , Shen Chaolan , Huang Hui , Lv Jian , Zeng Siming , Li Min , Chen Qi
Published: May 2019

Backgroud: To evaluate the subfoveal choroidal thickness (SFCT) in eyes with macular edema (ME) secondary to retinal vein occlusion（RVO），and to investigate the short term response after a single intravitreal ranibizumab (IVR) injection. What is more, to compare SFCT and SFCT change between central RVO (CRVO) and branch RVO (BRVO).
Methods: In the retrospective study, we had collected thirty-six treatment-naïve patients with unilateral ME secondary to RVO (including nineteen CRVO and seventeen BRVO). All patients had received IVR injection after newly diagnosed. The SFCT was measured at the onset and after two weeks of IVR injection. Paired t test was performed to compare the SFCT of RVO eyes and fellow eyes, as well as the SFCT of pre-injection and post-injection. In further, independent t test was used to compare SFCT and SFCT change between CRVO eyes and BRVO eyes.
Results: The mean SFCT at the onset was 326.03±30.86 μm in CRVO eyes, which was significantly thicker than that in contralateral fellow eyes (p<0.01, paired t test), and reduced to 294.15±30.83 μm rapidly after two weeks of IVR injection (p<0.01, paired t test). Similarly, the SFCT in BRVO eyes was significantly thicker than that in contralateral eyes at the onset, and decreased significantly after IVR injection. However, our findings showed that there was no statistically significant difference in SFCT and SFCT reduction after IVR injection between CRVO eyes and BRVO eyes.
Conclusions: The SFCT in eyes with ME secondary to CRVO and BRVO was significantly thicker than that in fellow eyes, and decreased significantly within a short time in response to a single IVR injection. In further, the study showed that SFCT and SFCT change had no correlation with RVO subtypes.
Retinal relaxation following membrane peeling: Effect on vision, central macular thickness, and vector analysis of motion
Authors: Smet Marc D. de , Julian Karina , Maurin Jerick , Jolissaint Laurent P. , Mura Marco
Published: May 2019

Purpose

Removal of an epiretinal membrane (ERM) leads to the outward displacement of retinal vessels and visual improvement. The direction and extent of displacement in the form of a vector analysis over the posterior pole can provide a better understanding of the dynamics and duration of this process, while the magnitude might have implications in terms of visual outcome.

Methods

Scanning laser ophthalmoscope images of the retina of eyes undergoing ERM peeling were compared before and 6 months after surgery. Stratification was made between prominent and limited displacement, with assessment of visual acuity (VA), and central macular thickness (CMT). In three cases, using the optic nerve as reference, 50 landmarks were chosen within the posterior pole along large and small vascular structures allowing the construction of a vector map of displacement over 1 year.

Results

Nine eyes with prominent and 6 with limited displacement were assessed. Improvement in VA was similar for both groups, while CMT drop was greatest for the worst group. Vector analysis showed that most vascular movement occurs over the first 6 months, covers most of the posterior retina, is centered around distinct nodes, may lead to several hundred microns of displacement.

Conclusions

Retinal relaxation has no direct implication on visual recovery. It originates in nodes of retinal contraction. Its extent can be significant