bluuebunny/crossref_metadata_2025 huggingface dataset:
Osoba dorosła z niepełnosprawnością słuchowa jako odbiorca sztuki (na podstawie wyników badań zrealizowanych na pograniczu pedagogiki specjalnej i neuroestetyki)
Authors: Lubińska-Kościółek Elżbieta , Zielińska Jolanta
Published: November 2020

In this paper the research of art perception by people with hearing disorder has been presented. This study has been performed from the perspective of special pedagogy and neuroesthetic. The encephalography technique and QEEG analysis has been performed with usage of Mitsar-EEG-202 head. This device is controlled by WinEEG software which allows qualitative and quantitative analysis many aspects of EEG signals integrated with two physiological sensors: rhythm of heard and amplitudes of blade pulse and breathing. The results of this study shown usability of the proposed research process for identification new research topics in area of special pedagogy. They also illustrated as many important information about influence of disorder on functioning disable person may be collected by such study. This related in this case to neurological aspects of art perception by by people with hearing disorder.
Perspectives of Civic Upbringing as in Non formal Education
Authors: YEHOROVA OLEKSANDRA
Published: November 2020

The article covers the theoretical aspects and importance of civic education in its broad sense nowadays and analyzes its role, tasks, the after-school programs, best experiences and practices of after-school education in the United States in the field of civic education and upbringing. In the article civic education in the framework of U.S. out-of-school time is substantiated as a systematic object in its substantive and procedural aspects, which aims to form national, universal human values, civic activity and competencies required in the XXI century. It has been established that civic education and upbringing has been integrated in the secondary school and out-of-school education curriculum and practice, is considered as a priority task for education at the present stage in the United States and is a perspective area for nonformal education in Ukraine and beyond.
Między postprawdą a (pseudo)mądrością tłumu – o epistemicznej pułapce cyfrowych mediów i analogowych kompetencjach jako środkach jej uniknięcia
Authors: PIETRZYKOWSKI ADAM
Published: November 2020

Adam Pietrzykowski, Między post-prawdą a (pseudo)mądrością tłumu – o epistemicznej pułapce cyfrowych mediów i analogowych kompetencjach jako środkach jej uniknięcia [Between post-truth and (pseudo)wisdom of the crowds – on epistemic trap of digital media and analog competences as means of avoiding it]. Interdyscyplinarne Konteksty Pedagogiki Specjalnej, nr 23, Poznań 2018. Pp. 77-91. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.23.04

In the modern world, truth has become an anachronistic value. At the same time, hopes associated with its restitution by the networked crowd have proved futile. The growing dominance of audiovisual media inevitably leads to the formation of a new man, driven more by affection than rationality. Phenomena such as secondary illiteracy, language depletion and the rise of populism are signs of this process. The development of media literacy suggested by theoreticians of education may be an insufficient remedy for the indicated civilization problem. The solution may be returning to basic competences shaped, in particular, by philosophical education, which may become the proper medium for restoring critical reason in society.
Edukacja medialna z perspektywy edukacyjnej analizy transakcyjnej
Authors: ŁĘSKI ZBIGNIEW
Published: November 2020

Zbigniew Łęski, Media education from the perspective of educational transactional analysis, Interdisciplinary Contexts of Special Pedagogy, No. 23, Poznań 2018. Pp. 103–115. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.23.06

Educational transactional analysis is one of the main branches of transactional analysis – a concept, which was developed with psychotherapy in mind. Its tools and clear terminology allow for both theoretical and empirical analysis of many aspectspertaining to the specificity of human functioning in the world of new media. The article shows the possibilities of its application and presents a review of previous theoretical and empirical initiatives that deal with this issue.
Opowieść transmedialna jako przykład kreacyjnych możliwości fandomu
Authors: CZOPEK JAKUB
Published: November 2020

Jakub Czopek, Opowieść transmedialna jako przykład kreacyjnych możliwości fandomu [Transmedia story as an example of creative possibilities of fandom]. Interdyscyplinarne Konteksty Pedagogiki Specjalnej, nr 23, Poznań 2018. Pp. 191-202. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.23.11

The subject of the article is the creative activity of fan communities (fandom), with particular emphasis on the transmedia storytelling, i.e. the story told simultaneously within various media. The development of the Internet in the Web 2.0 formula has opened a number of possibilities for the creation of fandoms centered around a particular series, movies, books or games. The main manifestations of the activity of these groups can be reduced on the one hand to analyzing and commenting on a given text of culture, and on the other hand, to develop it, by adding new stories, often using other medium than the one originally used.
Rodzice a nowomedialne wspomaganie współczesnej polskiej szkoły (raport z badań)
Authors: MICHNIUK ANNA
Published: November 2020

Anna Michniuk, Rodzice a nowomedialne wspomaganie współczesnej polskiej szkoły (raport z badań) [Parents and new media in modern Polish schools]. Interdyscyplinarne Konteksty Pedagogiki Specjalnej, nr 23, Poznań 2018. Pp. 249-266. Adam Mickiewicz University Press. ISSN 2300-391X. DOI: https://doi.org/10.14746/ikps.2018.23.15

The article presents some of the conclusions of the research carried out in 2016 among the junior high schools located in lubuskie voiewodship. One of the subjects of the research was the parents of new media support for modern school assess. The text presents parents’ opinions on the new media activity of students, support of new media in the teaching – learning process, building contact between the school and parents and also (auto)promotion of the school. The article also contains a short description of the new media activity of parents of contemporary teenagers and characteristic of the media world in which modern parents were brought up.
β-Catenin immunocytochemical reactivity in cervicovaginal smears during regular menstrual cycles
Authors: Donmez Hanife Guler
Published: November 2020

Background

β-Catenin mediates cellular adhesion and the Wnt/β-catenin signaling mechanism, thereby controlling cell proliferation and differentiation. Studies of endometrial tissue suggest that there are differences in β-catenin expression during the course of regular menstrual cycles. However, differences in expression in squamous epithelial cells between the proliferative and secretory phases have hitherto remained unknown.

Objectives

To localize β-catenin in squamous epithelial cells in cervicovaginal smears during the course of regular menstrual cycles.

Methods

In this observational study, smears were taken from women (n = 102) with various gynecological complaints. Squamous epithelial cells were stained using a Papanicolaou method to evaluate their cytology and any infection. An anti-β-catenin antibody was used to localize immunoreactivity in the cell membrane, cytoplasm, and/or nucleus.

Results

Women with a regular menstrual cycle (n = 62) were divided into 2 groups: those in a proliferative phase (26/62, 42%) and those in a secretory phase (36/62, 58%). Cytoplasmic and nuclear β-catenin immunoreactivity was observed prominently in the proliferative phase (19/26, 73%), whereas low-level β-catenin immunoreactivity was seen in the secretory phase (9/36, 25%). Compared with the secretory phase, the mean H-scores for β-catenin immunoreactivity in the proliferative phase were significantly increased in the membrane (P = 0.039), the cytoplasm (P < 0.001), and the nucleus (P = 0.033). By contrast, β-catenin immunoreactivity was reduced from parabasal to superficial cells in both the proliferative and secretory phases.

Conclusions

Cytoplasmic and/or nuclear β-catenin immunoreactivity may indicate that the activity of the Wnt/β-catenin signaling pathway is cycle dependent.
DasThothbuch: eine ägyptische Vorlage der platonischen Schriftkritik imPhaidros?
Authors: Poetsch Christoph
Published: November 2020

In 2005, an Egyptian dialogue’seditio princepswas published, named by its editors the ‘Book of Thoth’. While prior research on the relation between this dialogue and theCorpus Hermeticumcould not identify far reaching parallels, another relation has not been taken into account yet: the relation to Plato’s critique of writing in thePhaedrus. The present article argues that very likely theBook of Thothforms a source of the Platonic text, to which Plato responds with a diametrically opposed criticism. To underline the argument, literal and thematic parallels are pointed out in a first step. Then, secondly, the focus is put on the order of the two texts. Finally, a systematic comparison between the Platonic and the Egyptian understanding of scripture underscores the argument. Thematic parallels and literal correspondences are numerous and therefore suggest excluding a similarity by accident: In theBook of Thothwe grasp a concrete Egyptian source of Plato for the first time.
Estudio del test de tolerancia a lactosa como alternativa a test de hidrógeno espirado en el estudio de la malabsorción de lactosa
Authors: Sendino Teresa , Sandúa Amaia , Calleja Sofía , González Álvaro , Alegre Estibaliz
Published: November 2020

Objetivos

La malabsorción de lactosa se estudia habitualmente mediante el test de hidrógeno espirado (HBT), aunque su realización no es recomendable cuando la concentración de hidrógeno basal (H2B) es elevada. Además, la situación actual en relación con el SARS-CoV-2 puede hacer desaconsejable el manejo de muestras de aliento. Objetivo: Evaluar la concordancia del HBT y el test de tolerancia a la lactosa (TTL) en función del H2B.

Métodos

Se estudiaron 430 pacientes (40 años, Q1–Q3 = 28–54 años; 66,7% mujeres) con sospecha de malabsorción de lactosa. Se recogieron basalmente y secuencialmente tras la administración de lactosa, muestras de aliento para medir el hidrógeno espirado y de sangre heparinizada para medir la glucemia.

Resultados

El 69,5% de los pacientes tenían H2B <10 ppm, el 14,7% valores entre 10 y 20 ppm, y el 15,8% >20 ppm. En los pacientes con H2B <20 ppm la concordancia entre el HBT y el TTL era moderada, mejorando siempre al emplear un punto de corte de 15 mg/dL en el TTL. El incremento de hidrógeno y el de glucosa correlacionaron negativamente (r=−0,389; p<0,05). El aumento observado en la glucemia durante el TTL no variaba en función de los niveles de H2B registrados en el HBT.

Conclusiónes

El TTL puede ser una alternativa al HBT para evaluar la malabsorción de lactosa cuando los niveles de H2B sean elevados o las circunstancias desaconsejen el manejo de muestras de aliento. La mejor concordancia se observa cuando se toma como punto de corte en el TTL de 15 mg/dL.
SARS-CoV-2: a new threat
Authors: López Rodríguez Cristina A. , Pons Marc Boigues , Sánchez Bibiana Quirant , Serra Aina Teniente , Martí Joan Climent , Martínez Cáceres Eva Ma
Published: November 2020

Background

The pandemic caused by the emergence of the new SARS-CoV-2 virus worldwide has had a major impact at all levels and has forced in-depth research into its behavior, pathogenicity and treatment.

Content

This review provides an overview of various aspects of the virus and the immune response it triggers, as well as a description of the different diagnostic and therapeutic approaches adopted.

SARS-COV-2 is a RNA virus with some peculiarities that make it different from its predecessors SARS-CoV and MERS. Given its structural characteristics and pathogenesis, it can cause different clinical manifestations as the disease progresses. The immune system has been proven to play a major role in the response to this virus and, therefore, the study of antibodies and lymphocyte populations during the different stages of the disease is crucial.

Outlook

The knowledge of the effect of the virus and the immune response is crucial for the development of good quality vaccines, therapies and diagnostic techniques, which are essential for the control and eradication of the disease.
El CYFRA 21-1 en pacientes con sospecha de cáncer: evaluación de un punto de corte óptimo para evaluar la eficacia diagnóstica y el valor pronóstico
Authors: Garcia-Valdecasas Gayo Sonsoles , Ruiz-Alvarez Maria Jesus , Gonzalez-Gay Daniel , Ramos-Corral Raquel , Marquez-Lietor Eva , Del Amo Nazaret , Plata Maria del Carmen , Guillén-Santos Raquel , Arribas Ignacio , Cava-Valenciano Fernando
Published: November 2020

Objetivos

El punto de corte utilizado del CYFRA 21-1 como marcador tumoral influye considerablemente en su utilidad diagnóstica y pronóstica. El objetivo de este estudio es establecer un punto de corte óptimo de CYFRA 21-1 que tenga validez diagnóstica, determinado con la tecnología Lumipulse® en pacientes con sospecha de cáncer. El objetivo secundario de este estudio es determinar si los niveles de CYFRA 21-1 tienen valor pronóstico.

Métodos

Se llevó a cabo un estudio retrospectivo en una muestra compuesta por 284 pacientes con sospecha de enfermedad maligna procedentes de seis hospitales de Madrid. El punto de corte se obtuvo mediante la curva ROC y el test de Youden. La validez diagnóstica se evaluó de acuerdo con la sensibilidad, especificidad, valores predictivos y ratios de probabilidad. El valor pronóstico de CYFRA 21-1 se determinó por medio de la regresión logística múltiple. Se confirmaron un total de 32 casos de cáncer.

Resultados

El punto de corte más óptimo fue 3,15 ng/mL. Este punto de corte mostró mejor especifidad, de 93,63% (89,66–96,16; IC 95%), Valor Predictivo Positivo (44,54–75,38; IC 95%) y Razón de Probabilidad Positiva 12,65 (7,64–20,95; IC 95%) que el punto de corte recomendado por Fujirebio® (1,8 ng/mL); con una especifidad de 73,71% (67,72–78,95; IC 95%), Valor Predictivo Positivo: 29,79% (21,02–40,23; IC 95%) y una Razón de Probabilidad Positiva de 3,43 (2,71–4,35; IC 95%), mejorando la precisión diagnóstica actual. En el análisis multivariante, se confirmó que los niveles elevados de CYFRA 21-1 (>3,15 ng/mL) son un factor pronóstico desfavorable.

Conclusiones

El mejor punto de corte obtenido para CYFRA 21-1 fue de 3,15 ng/mL en pacientes con sospecha de cáncer. Este nuevo punto de corte reduce la tasa de falsos positivos y mejora la eficacia diagnóstica de CYFRA 21-1 como marcador tumoral, así como su asociación con la mortalidad.
Personalised neural networks for a driver intention prediction: communication as enabler for automated driving
Authors: Reschke Johannes , Neumann Cornelius , Berlitz Stephan
Published: November 2020

In everyday traffic, pedestrians rely on informal communication with other road users. In case of automated vehicles, this communication can be replaced by light signals, which need to be learned beforehand. Prior to an extensive introduction of automated vehicles, a learning phase for these light signals can be set up in manual driving with help of a driver intention prediction. Therefore, a three-staged algorithm consisting of a neural network, a random forest and a conditional stage, is implemented. Using this algorithm, a true-positive rate (TPR) of 94.0% for a 5.0% false-positive rate (FPR) can be achieved. To improve this process, a personalization procedure is implemented, using driver-specific behaviours, resulting in TPRs ranging from 91.5 to 96.6% for a FPR of 5.0%. Transfer learning of neural networks improves the prediction accuracy of almost all drivers. In order to introduce the implemented algorithm in today’s traffic, especially the FPR has to be improved considerably.
Effect of isovalent substitution on the crystal structure and properties of two-slab indates BaLa2−xSmxIn2O7
Authors: Titov Yuri , Belyavina Nadezhda , Slobodyanik Mykola , Nakonechna Olesya , Strutynska Nataliia , Tymoshenko Mariana
Published: November 2020

Exploring the effect of isomorphic substitution of atoms on crystal structure and features of oxide compounds is one of the main tasks of modern materials science. This paper deals with the La/Sm isovalent substitution in a two-slab perovskite-like BaLa2In2O7 structure and its effect on the structural features and magnetic properties of BaLa2−xSmxIn2O7 indates synthesized. A complete characterization including data of scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffraction (XRD), structural calculations (Rietveld method), second optical harmonic generation of the laser radiation, calculations of valence bond sums (VBS), and magnetic susceptibility data of phases obtained is presented. The existence region of BaLa2−xSmxIn2O7 solid solutions with a two-slab perovskite-like structure (0 ≤ x ≤ 1.8) was established, and their coordinate parameters were refined. The character of barium and RE atoms distribution in BaLa2−xSmxIn2O7 structure has determined, and the correlation between substitution degree of lanthanum atoms and the length of Ln–O2 interblock distance has revealed. The magnetic properties of BaLa2−xSmxIn2O7 were considered in terms of the crystal field effect.
Synthesis, spectral and thermo-kinetics explorations of Schiff-base derived metal complexes
Authors: Ahmad Naushad , Alam Manawwer , Wahab Rizwan , Ahmed Mukhtar , Ahmad Ashfaq
Published: November 2020

Schiff-base ligand, 2,6-bis(benzimino)-4-phenyl-1,3,5-triazine (L), and its transition metal complexes of Co(ii), Ni(ii), and Cu(ii) were synthesized by refluxing the reaction mixture and its analytical, spectral, and thermogravimetric characteristics were explored by various techniques: AAS, FT-IR, UV-vis, TG-DTG, CHNS/O, and VSM. It was observed that all the metal containing complexes are non-electrolytic, mononuclear, and paramagnetic in nature, confirmed by the molar conductance and magnetic susceptibility measurements. Optical spectral data were used to investigate the geometrical and spectral parameters of [Co(L)(ac)2], [Ni(L)(ac)2], [Cu(L)(ac)2], [Cu(L)(acac)2], and [Cu(L)(fmc)2] complexes. Simultaneous thermal analyses (TG-DTG) in nitrogen atmosphere reveal that the ligand decomposes in one step, [Co(L)(ac)2], [Ni(L)(ac)2], and [Cu(L) (ac)2] complexes are decomposed in three steps, whereas [Cu(L)(acac)2] and [Cu(L) (fmc)2] are decomposed in five and two steps, respectively. In addition, activation energy (Ea) and pre-exponential factor (ln A) were evaluated by TG-DTG decomposition steps of compounds using the Coats–Redfern formula. Enthalpy (∆H), entropy (∆S), and Gibbs free energy (∆G) of the as-prepared metal complexes were also speculated by various thermodynamic equations.
Text, Werk und Peritext
Authors: Kondrup Johnny
Published: November 2020

The paper investigates Gérard Genette’s concept ‘peritext’ in relation to the concepts ‘text’ and ‘work’. It is obvious that Genette regards both text and work (which he tends to mix up) as immaterial entities and conceives the peritext as their way into the material world. The peritext forms a path between the text, considered as a series of linguistic signs, and the physical document, which is the book.

Certain peritexts are indeed material (such as the format of the book and its typography). But other peritexts are linguistic, i. e. texts, and as such immaterial (e. g. the preface and the colophon). This ambiguity might be avoided if the term ‘peritext’ was confined to the linguistic ones and the material peritexts were labeled ‘materiality’.

Also, Genette’s notion of ‘work’ is ambiguous. On the one hand, he describes a work as synonymous with a text, and on the other hand, he confines the term to a certain class of (literary) texts. None of the notions is in accordance with his argumentation, underneath which lies implicitly the idea of the work as a ‘polytext’.

Finally, the paper discusses which peritexts can be regarded as belonging to the whole work, and which belong only to a certain version of the work or to a specific copy (document).
Harlekine und Grabsteine – oder: Wie ediert man den Zufall?
Authors: Schmitz-Emans Monika
Published: November 2020

In Laurence Sterne’s novel The Life and Opinions of Tristram Shandy, Gentleman, typography, ‹mise en page› and the concrete architecture of the book (page, text and chapter structure) become literary means of staging the work. The same applies to special arrangements of page sequences and the selective use of special material. The so-called black page, actually a recto- and verso page, and the marbled page, made of specially produced marbled paper, are spectacular highlights of the novel. The marbled page makes every book copy unique. New editions of Tristram Shandy, however, have often ignored Sterne’s arrangement, often not understood it, sometimes even interpreted it idiosyncratically. A collection of examples of re-stagings of the marbled page and the black page illustrates different forms of semantization of book material.
Dramatische ‹mise en page› in Handschrift und Druck
Authors: Brüning Gerrit , Pravida Dietmar
Published: November 2020

The paper compares the typography of the first edition of Goethe’s collected writings 1787–1790 with the layout (‹mise en page›) of the manuscript copies from which the print was set. It tries to establish the textual authority of particular typographic devices for print dramas such as the indications of scenes, stage directions, and speech prefixes by tracing their relation to the manuscript setting copies and their development in subsequent volumes of the print edition, but especially for the tragedy Torquato Tasso. It turns out that print typography is sensitive to the manuscript record but shows substantial tendencies to introducing additional typographic hierarchy, thereby underlining outward form, i. e. external characteristics of classicist drama. Later editions published during Goethe’s lifetime seem to go much further in this direction. The consequences for the typographic setup in critical editions of Goethe’s dramas are discussed.
Paratextelemente der Postkarte
Authors: Greinert Cordula , Martin Ariane , Nottscheid Mirko
Published: November 2020

The article examines the main paratextual elements of the postcard. The authors hold that these are not of only secondary importance to understanding this particular medium, but that they constitute it as such. Therefore, paratextual elements must be considered accordingly in an edition. Drawing on examples from the current project Frank Wedekind’s correspondence – digital edition, three aspects are focussed on: (1) the intermedial relations of text(s) and visual paratext(s) on picture postcards, (2) the meaning of specific postal paratexts such as postmark, stamp, or address and (3) the phenomenon of collective communication practices on group postcards. The authors conclude that constitutive paratextual elements of the postcard are better presented as an integral part of the edited text instead of being placed in the critical apparatus.
Investigating the origins of Peter Wessel Zapffe’s notion of tragedy in Aristotle’sPoetics: the case ofmimesis
Authors: Proszewska Agnieszka Maria
Published: November 2020

The aim of this paper is to present the philosophical figure of a Norwegian philosopher and writer, creator of biosophy, Peter Wessel Zapffe (1899–1990), and to investigate the origins of his notion of tragedy (tragic experience) which he introduces in his magnum opusOm det tragiske(1941). I attempt to do so by searching its roots in antique theory of tragedy introduced by Aristotle, especially on the pages ofPoetics, to which Zapffe himself often refers to. A study of how Zapffe “read” and understood Aristotle’sPoetics, a classical piece for the study of tragedy and tragic experience, seems essential for establishing the roots and foundations of his own vision of tragedy and its functions, finally shifting from the purely literary sphere to the biosophical level of human existence. In this paper I will focus mainly on the notion and art ofmimesis, laying the basis for further detailed studies of Zapffe’s biosophical analysis of the subject.
Boundaries of the Stranger
Authors: Hjortshøj Søren Blak
Published: November 2020

In recent cosmopolitan work, scholars such as Julia Kristeva, Zygmunt Bauman, Jacques Derrida, and Ulrich Beck have represented the stranger as a universal ideal for our global age and Georg Simmel’s stranger in theExkurs über den Fremdenhas been emphasized as a model for this ideal. While these uses can be justified by generalized passages in Simmel’s essay, they still omit the problem of European Jewish historical exemplarity. Thus, in the decades before Simmel’s essay, this stranger type was already a well-developed figure related to the so-called Jewish question. Georg Brandes and Henrik Pontoppidan used the Jewish stranger to evaluate the societal changes of the fin-de-siècle period and questions of progress vs. decay. Yet, their work limited the stranger to a specific type of Jewishness not including other marginal existences. Hence, reading Simmel with Brandes and Pontoppidan outlines the boundaries of this stranger type as it raises questions regarding recent cosmopolitan uses of Simmel’s stranger.
Hytte-humor – om sanitetsbind og begjær
Authors: Rees Ellen
Published: November 2020

This article considers two comedy sketches that poke fun at cabin culture, a key praxis in contemporary Norway. The sketches are examples of what philosopher Simon Critchley calls «comedy of recognition», reflecting rather than challenging common experiences and beliefs. Focusing on the attitudes held by men and women toward cabins, the article examines how in particular masculinity is experienced and performed in this setting. The article concludes that cabins express complex feelings connected to personal, gender and national identities, and that they are therefore an apt vehicle for comedy about what it means to be Norwegian today.
Fabrication of flexible SiO2 nanofibrous yarn via a conjugate electrospinning process
Authors: Dai Zhang , Yan Fangfang , Qin Mei , Yan Xu
Published: November 2020

Nowadays, different kinds of polymers, including ceramics, are electrospun into fibrous materials with different structures by electrospinning. Generally, the as-spun ceramic fibers are randomly oriented membranes and brittle without flexibility. Here, we report the fabrication of flexible SiO2 electrospun yarns using poly(vinyl alcohol) (PVA) as a template through a conjugate electrospinning process and calcination. It was found that the calcined as-spun fibers and yarns are obviously thinned with PVA component removal. Fourier transform infrared spectroscopy and energy-dispersive spectroscopy examinations suggested that the obtained yarn after calcination was SiO2 yarn. The SiO2 yarn showed good flexibility without cracking after 180° bending. The flexible ceramic yarn may have potential application in functional textiles.
Assessment of academic performance of licensed athletes
Authors: Aycan Zehra , Akgül Sinem , Gençay Selçuk , Kanbur Nuray , Derman Orhan
Published: November 2020

Objectives

Physical activity and sports can be used to reduce stress and anxiety by increasing aerobic capacity and muscle endurance, gain positive behavioral changes and improve their self-discipline, use time well, adopt positive lifestyle such as regular eating and sleeping, which will result in an increase in school success. There are no comprehensive study that examines the academic performance of licensed student athletes and the factors influencing their success rates. The aim of this study was to evaluate the academic performance and related factors in licensed athletes.

Methods

One hundred eleven licensed athletes at junior high school level were enrolled. Participants filled out questionnaires specifically designed to assess for factors affecting academic performance, where personal and familial factors as well as school performance was taken into consideration. Their academic success rates were evaluated out of mean grade points before as well as after professional sports activities. Academic fields that were graded were, namely, mathematics, life sciences, language, and grammar studies as well as social sciences. Fifty one of participants lived in Ankara (Group 1) and the other 60 lived in Kahramanmaraş (Group 2). The effects of sport and other factors that may affect school success in all groups and between the groups were evaluated before and after sports.

Results

The age of the athletes were 14.1 ± 2.3 years, 49.5% were male. The grades of athletes before they started competing in professional sports were 80.4 ± 10.6 for mathematics, 80.5 ± 12.5 for sciences, 82.7 ± 9.5 for language studies, and 83.6 ± 9.3 for social sciences. Following a mean period of 4.3 ± 3.1 years of professional sports, the grades of athletes were, with the same order for respective discipline were, 81.6 ± 10.9, 82.4 ± 11.9, 84.3 ± 9.4, and 85.5 ± 8.5. Following sports activities, academic performance in life sciences, language, and grammar studies as well as social sciences showed a significant improvement where grades for mathematics did not show any significant change (p=0.054). The most important factor that improves school performance is the financial status of the family. In Group 1 demonstrated grade improvements following sports activities only in social sciences, whereas Group 2 athletes showed such an improvement for all the disciplines (p<0.05).

Conclusions

Licensed athletes’ school success during the junior high school period showed a significant increase after sports in this study. The most important factors that affected the academic performance were the socioeconomic status of the family.
Influence of magnets magnetization direction on the performance of high-speed permanent magnet synchronous starter-generator for micro-gas turbine
Authors: Zhao Haiyang , Zou Xutian , Qiu Hongbo , Ding Yiwei
Published: November 2020

High-speed surface-mounted permanent magnet synchronous machine is often used in micro gas turbine generation system due to its high rotor strength and high efficiency. The electrical machine in this kind of generation system needs to integrate two functions of starter and generator. Therefore, its comprehensive performance, including starting performance and generating performance, has become a comprehensive standard to measure machine performance. In this paper, a 40 kW, 20,000 r/min high-speed machine is taken as an example, the influence of magnets magnetization direction on the machine comprehensive performance is studied. The machine models with different magnets magnetization directions are established by using finite element method and the correctness of the models is verified by comparing the experimental data with the finite element calculation data. On this basis, the influence of different magnetization directions on the performance of the machine, such as generation loss, torque ripple, output voltage, start-up time and maximum starting ability, is analyzed. Furthermore, based on the Fourier decomposition of air gap flux density and the decoupling analysis of starting torque, the influence mechanism of magnetization direction on the performance of the machine is revealed. The presented results provide a reference for the selection of a suitable magnetization direction for high-speed surface-mounted permanent magnet machines.
Frequency regulation of a weakly connected microgrid using the fuzzy-PID controller
Authors: Nachidi Meriem
Published: November 2020

Microgrid system stability is a major source of concern due to the rapid increase in load demand and a high level of renewable energy penetration. During the grid- connected mode, the microgrid power quality is mainly affected by the level of connection strength with the host grid. Thus, this paper aims to investigate the impact of the implemented control strategy in the microgrid, on frequency response when its level of connection strength is weak, that is, the frequency and voltage are not dominantly controlled by the grid. A control scheme based on a fuzzy logic-based self-tuning PID controller (fuzzy-PID) is used to maintain the frequency within the acceptable range. Simulations illustrate that the frequency dynamic response of the microgrid guarantees a good performance using the fuzzy-PID controller despite a large drop in grid inertia and the presence of disturbances whereas the classical PID controller cannot maintain the frequency within the acceptable range.
Mathematical model of high-temperature tube-shaped pasta drying in a conveyer belt drier
Authors: Ostrikov Alexander N. , Ospanov Abdymanap A. , Shevtsov Alexander А. , Muslimov Nurzhan Zh. , Timurbekova Aigul K. , Jumabekova Gulnara B.
Published: November 2020

The drying procedure is a key to producing pasta of intended quality and with a specific price tag. However, the existing models are mainly to describe the drying process in a steady state. A mathematical model of tube-shaped pasta drying in a conveyor belt dryer with a stepwise heating supply allows determining the curve of temperature and moisture gradients for a tube-shaped pasta unit. It also helps select the best settings to minimize the heat-power costs while maintaining the good quality of a dried product. The given model describes the drying process in a true-to-life form and ensures the convergence of calculations to observations (deviation: 12.5%). The model was utilized to design a transient drying protocol for conveyor belt dryers with a stepwise heating supply. The proposed dryer has high service reliability and produces uniformly dried high-quality product.
Norm inequalities on variable exponent vanishing Morrey type spaces for the rough singular type integral operators
Authors: Gürbüz Ferit , Ding Shenghu , Han Huili , Long Pinhong
Published: November 2020

In this paper, applying the properties of variable exponent analysis and rough kernel, we study the mapping properties of rough singular integral operators. Then, we show the boundedness of rough Calderón–Zygmund type singular integral operator, rough Hardy–Littlewood maximal operator, as well as the corresponding commutators in variable exponent vanishing generalized Morrey spaces on bounded sets. In fact, the results above are generalizations of some known results on an operator basis.
Complexity bounds on Semaev’s naive index calculus method for ECDLP
Authors: Yokoyama Kazuhiro , Yasuda Masaya , Takahashi Yasushi , Kogure Jun
Published: November 2020

Since Semaev introduced summation polynomials in 2004, a number of studies have been devoted to improving the index calculus method for solving the elliptic curve discrete logarithm problem (ECDLP) with better complexity than generic methods such as Pollard’s rho method and the baby-step and giant-step method (BSGS). In this paper, we provide a deep analysis of Gröbner basis computation for solving polynomial systems appearing in the point decomposition problem (PDP) in Semaev’s naive index calculus method. Our analysis relies on linear algebra under simple statistical assumptions on summation polynomials. We show that the ideal derived from PDP has a special structure and Gröbner basis computation for the ideal is regarded as an extension of the extended Euclidean algorithm. This enables us to obtain a lower bound on the cost of Gröbner basis computation. With the lower bound, we prove that the naive index calculus method cannot be more efficient than generic methods.
2 × 20 Gbit/s OFDM-based FSO transmission system for HAP-to-ground links incorporating mode division multiplexing with enhanced detection
Authors: M Praveen , B Vasudevan , R Ransom
Published: November 2020

In this work, the integration of free-space optics (FSO) technology for implementing long-haul high-altitude platform (HAP)-to-ground transmission system is proposed. Mode division multiplexing (MDM) and orthogonal frequency division multiplexing (OFDM) are incorporated for carrying high-speed signals without interference. The impact of increasing input power, divergence angle, antenna diameter, and attenuation on the system performance is further investigated. In addition, the performance of the MDM-OFDM-HAP-to-ground FSO transmission system is improved by using a square root module at the receiver for link reach enhancement. The results exhibit a reliable transportation of 40 Gbps information over 20 km FSO distance with good quality of the received signal.
Cascadability analysis of WDM recirculating loop buffer-based switch in optical data networks
Authors: Shukla Vaibhav , Patel Prabhat Kumar , Choubey Dilip Kumar , Kumar Santosh
Published: November 2020

In recent years the development of cloud computing, big data, cell phone application increases day by day and this will increase the work load on the server centers. Once the network traffic increases the power consumption also increases. In recent past, for reducing this power consumption arrayed waveguide grating (AWG) based optical packet switches are proposed. In these switches the physical and network layer analysis has been presented in isolated switch. In the core network to achieve low packet loss probability an effective buffering technique is required into the design of switch. In this paper a recirculating loop buffer based switch is presented, in this switch design for sharing the recirculating buffer, WDM technology is used by the packets. The main advantage of recirculating buffer is that it allows packet priority routing and by using this technique longer duration buffering of packet is achieved. This feature provides the quality of service in optical networks. In this paper, switch is deployed in the network and the performance of switch is measured when multiple switches are cascaded in the network simultaneously. The power analysis of switch is also performed for isolated and cascaded switches. For fixing the size of the switch into the network the concept of graph theory and random graph model is used.
Implementation of wavelet transform based non-Hermitian symmetry OFDM for indoor VLC system using Raspberry Pi
Authors: Khalid Arslan
Published: November 2020

Optical orthogonal frequency-division multiplexing (OFDM) has proven to be an effective technique for the visible light communication (VLC) system in which data is sent and received through the intensity-modulated/direct-detected optical channel. However, OFDM exhibits high peak-to-average power ratio (PAPR) and for the generation of real-valued signal employs Hermitian symmetry (HS) of the frequency symbols which in turn boost the computational complexity (CC) and deteriorates the performance of the system. Besides, OFDM also included cyclic prefix (CP) as redundancy that reduces the spectral efficiency. This paper aims to target the aforesaid OFDM issues and introduce a novel technique in the form of wavelet transform (WT) based on non-HS OFDM (NHS-OFDM). In the proposed technique, an N-point complex OFDM signal is generated by utilizing wavelets as basis function, from which real and imaginary components are extracted and then concatenated to form a 2N-point real signal. The work also confirmed that the CC of the proposed technique is about 83% less than the conventional Fourier transform (FT) based NHS-OFDM technique due to which reduction in PAPR and bit error rate (BER) improvement is also noticed from the simulated results. The superior performance of WT based NHS-OFDM technique is further verified via experiments conducted by interfacing the computer terminal with Raspberry Pi (RPi) 3b+ modules. In the designed VLC prototype, the NHS-OFDM modem work as the software-defined radio (SDR) on a stand-alone computer. The experiment results reveal that real-time text message is transmitted and received without error at the communication range of 1.75 m while the data rate attains from the prototype is 3.921 Mbps.
Almost periodic stochastic Beverton-Holt difference equation with higher delays and with competition between overlapping generations
Authors: Bezandry Paul H.
Published: November 2020

The paper studies the existence of an almost periodic solution of some system of stochastic Beverton-Holt equation with higher delays and with competition between overlapping generations under some reasonable assumptions.
Language shifts in the language biographies of immigrants from Upper Silesia residing in Germany
Authors: Zielińska Anna , Księżyk Felicja
Published: November 2020

The main objective of the article is to illustrate how language ideologies and language management at the macro-level (state language policy), micro-level (in families) and meso-level (local communities) influence language change and the conceptualization of multilingualism of immigrants from Upper Silesia residing in Germany. Language biographies of persons from Silesia demonstrate the significant influence of historical and political events on sociolinguistic processes. Original fragments of biographical interviews of the people surveyed constitute an integral part of the text.
NIST-certified secure key generation via deep learning of physical unclonable functions in silica aerogels
Authors: Fratalocchi Andrea , Fleming Adam , Conti Claudio , Di Falco Andrea
Published: November 2020

Physical unclonable functions (PUFs) are complex physical objects that aim at overcoming the vulnerabilities of traditional cryptographic keys, promising a robust class of security primitives for different applications. Optical PUFs present advantages over traditional electronic realizations, namely, a stronger unclonability, but suffer from problems of reliability and weak unpredictability of the key. We here develop a two-step PUF generation strategy based on deep learning, which associates reliable keys verified against the National Institute of Standards and Technology (NIST) certification standards of true random generators for cryptography. The idea explored in this work is to decouple the design of the PUFs from the key generation and train a neural architecture to learn the mapping algorithm between the key and the PUF. We report experimental results with all-optical PUFs realized in silica aerogels and analyzed a population of 100 generated keys, each of 10,000 bit length. The key generated passed all tests required by the NIST standard, with proportion outcomes well beyond the NIST’s recommended threshold. The two-step key generation strategy studied in this work can be generalized to any PUF based on either optical or electronic implementations. It can help the design of robust PUFs for both secure authentications and encrypted communications.
Dimensional confinement and waveguide effect of Dyakonov surface waves in twisted confined media
Authors: Chermoshentsev Dmitry A. , Anikin Evgeny V. , Dyakov Sergey A. , Gippius Nikolay A.
Published: November 2020

We theoretically study Dyakonov surface waveguide modes that propagate along the planar strip interfacial waveguide between two uniaxial dielectrics. We demonstrate that owing to the one-dimensional electromagnetic confinement, Dyakonov surface waveguide modes can propagate in the directions that are forbidden for the classical Dyakonov surface waves at the infinite interface. We show that this situation is similar to a waveguide effect and formulate the resonance conditions at which Dyakonov surface waveguide modes exist. We demonstrate that the propagation of such modes without losses is possible. We also consider a case of two-dimensional confinement, where the interface between two anisotropic dielectrics is bounded in both orthogonal directions. We show that such a structure supports Dyakonov surface cavity modes. Analytical results are confirmed by comparing with full-wave solutions of Maxwell’s equations. We believe that our work paves the way toward new insights in the field of surface waves in anisotropic media.
Structure of the mixed crystal (S)-(6-(bromo/chloro)-2-methoxy-2,6-dihydroquinolin-3-yl)(phenyl)methanol, C17H14Br0.5Cl0.5NO2
Authors: Geng Yi-Ding , Gong Yi-Xia
Published: November 2020

C17H14Br0.5Cl0.5NO2, monoclinic, P21/n (no. 14), a = 11.7324(5) Å, b = 7.4663(3) Å, c = 17.2211(8) Å, β = 104.890(1)°, V = 1457.87(11) Å3, Z = 4, R

gt
(F) = 0.0334, wR

ref
(F
2) = 0.0693, T = 296(2) K.
The crystal structure of trans-tetraaqua-bis(4-acetylphenoxyacetato-κ1
O)manganese(II), C20H26O12Mn
Authors: Jie Yin , Feng-Jun Zhang , Xi-Shi Tai
Published: November 2020

C20H26O12Mn, monoclinic, P21/c (no. 14), a = 4.8272(7) Å, b = 15.828(2) Å, c = 14.3688(19) Å, β = 95.312(13)°, V = 1093.1(3) Å3, Z = 2, R
gt(F) = 0.0344, wR
ref(F
2) = 0.0789, T = 100(1) K.
The crystal structure of N-(2-methoxy-4,5-bis[phenylselanyl]phenyl)picolinamide, C25H20N2O2Se2
Authors: Wang Lu-Yao , Wang Qing , Zhang Meng-Meng , Li Ping-Ping , Guo Xiao-Long
Published: November 2020

C25H20N2O2Se2, triclinic, P

1

‾

$‾{1}$

(no. 2), a = 9.6050(2) Å, b = 9.7531(2) Å, c = 13.2788(2) Å, α = 75.130(1)°, β = 81.824(1)°, γ = 72.329(2)°, V = 1142.75(4) Å3, Z = 2, R

gt
(F) = 0.0393, wR

ref
(F
2) = 0.1092, T = 294 K.
Geospatial analysis of environmental noise levels in a residential area in Lagos, Nigeria
Authors: Alani Rose Anthony , Ogunmoyela Olajomi Mary , Okolie Chukwuma John , Daramola Olagoke Emmanuel
Published: November 2020

Noise is an inevitable part of daily life and has been identified as a cause of several health deficiencies across the world. It has increasingly become a significant concern on the health and well-being of people. Studies are required to advance knowledge on the sources and impacts of noise in residential neighbourhoods of Lagos State, Nigeria. Therefore, this study assesses the spatial variation of noise levels within a section of the Festac residential area in Lagos in line with noise limits specified by the World Bank Group International Finance Corporation (IFC) Environmental, Health, and Safety (EHS) Guidelines and the Nigerian National Environmental Standards and Regulations Enforcement Agency (NESREA) Noise Standards and Control guidelines for community noise. Data for this research come from a field study comprising measurements of noise levels from 6 observation stations and questionnaire survey with 200 respondents. The criteria for siting the stations was based on factors such as proximity to the roadside, land use and population density, while the questionnaire was administered at random to assess the peoples’ level of awareness on the sources and effects of noise. A digital sound level meter was used to measure noise level variations over a period of 3 weeks for morning, afternoon and evening periods. The measured noise levels were analysed using Analysis of Variance (ANOVA) statistics and the Kriging Geostatistical interpolation technique. Also, logistic regression was used to determine the relationship between the respondents’ perceptions to noise and noise levels. The results indicated that the mean noise levels were within the approximate range of 53.5 – 94.0dBA over the entire period. The highest mean noise levels occurred in the north-western part of the study area where a bus park is present. In general, the noise levels in the area surpass the recommended noise limit of 55dBA, and the logistic regression showed that morning, afternoon and evening mean noise levels were significant predictors of noise variation as perceived by the dwellers. Proper legislation to regulate human activities with respect to noise generation is highly recommended to the local, state and national legislators.