bluuebunny/crossref_metadata_2025 huggingface dataset:
Existence and static stability of a capillary free surface appearing in a dewetted Bridgman process. Part II.
Authors: BALINT Agneta M. , BALINT Stefan
Published: December 2019

This paper presents six theoretical results concerning the existence and static stability of a capillary free surface appearing in a dewetted Bridgman crystal growth technique. The results are obtained in an axis-symmetric 2D model for semiconductors for which 𝜃𝜃𝑐𝑐+𝛼𝛼𝑒𝑒>𝜋𝜋 (where:𝜃𝜃𝑐𝑐- wetting angle and 𝛼𝛼𝑒𝑒- growth angle). Numerical results are presented in case of GaSb semiconductor growth. The reported results can help, the practical crystal growers, in better understanding the dependence of the free surface shape and size on the pressure difference across the free surface and the right choice of crystal size, pressure difference and thermal conditions for the growth process.
Light, Gravity, Expansion, Relativity, Black Holes and Black Energy - Considerations at the Scale of Universe
Authors: BERBENTE Corneliu , BERBENTE Sorin , BREBENEL Marius
Published: December 2019

Light, gravity, the Universe expansion and relativity in a simple but accurate enough model of Universe are studied. The proposed model starts with a singularity (BIG BANG or better said BIG FLASH). Unlike the standard picture where in the first stage there exists a “soup” of light and various particles (electrons, neutrinos, hydrogen, helium etc.), here the light energy is maintained for a longer time interval and a structure by dividing the Universe sphere is introduced. The first stage ends when neutrons (substance) appear by an effect of resonance. Then other particles are first formed by the neutron decay. After the occurrence of the substance, a hydrodynamic model of gravity is introduced through an analogy with the sources interaction in an incompressible fluid. It allows to obtain many interesting results. The model can be easily adapted to include special relativity effects. As regards the general relativity simple expressions for the scale of Universe do not seem to apply to the mass and radius of the Universe, currently accepted. Then, the possibility of using such simple relationships based on the light refractive index in the largest possible regions is studied.
Aerothermodynamic Shape Optimization for Re-entry Capsule Using Genetic Algorithms
Authors: BUNESCU Ionut , PRICOP Mihai-Victor , STOICAN Mihaita Gilbert , DINA Adrian Gheorghe
Published: December 2019

Space hasn’t been for a long time now the final frontier, in the last years more and more spaceships have accessed outer space for different missions, some of them being required to return. The actual and main task of researchers is to find an optimal geometry for new generation of spacecraft which must be reusable and fit the imposed loads (heat flux, pressure, acceleration). The purpose of this paper is to optimize the design of a re-entry capsule configuration, in order to minimize the maximum heat flux on the thermal protection system and to obtain a wanted imposed drag coefficient. For the optimization process we use genetic algorithms and for the solving process, local inclination methods. Even if the latter are low-fidelity methods and do not offer satisfying results on all conditions, we consider them to be good enough for a preliminary study of an optimal design. Thus, this paper purpose is to describe the procedure to obtain an optimal configuration which can be better analyzed with high-fidelity methods.
Technological advancements in Pulse Detonation Engine Technology in the recent past: A Characterized Report
Authors: DOGRA Bharat Ankur , SINGH Mehakveer , JINDAL Tejinder Kumar , CHANDER Subhash
Published: December 2019

Pulse Detonation Engine (PDE), is an emerging and promising propulsive technology all over the world in the past few decades. A pulse detonation engine (PDE) is a type of propulsion system that uses detonation waves to combust the fuel and oxidizer mixture. Theoretically, a PDE can be operate from subsonic to hypersonic flight speeds. Pulsed detonation engines offer many advantages over conventional air-breathing engines and are regarded as potential replacements for air-breathing and rocket propulsion systems, for platforms ranging from subsonic unmanned vehicles, long-range transportation, high-speed vehicles, space launchers to space vehicles. This article highlights the operating cycle of PDE, starting with the fuel-oxidizer mixture, combustion and Deflagration to detonation transition (DDT) followed by purging. PDE combustion process, a unique process, leads to consistent and repeatable detonation waves. This pulsed detonation combustion process causes rapid burning of the fuel-oxidizer mixture, which cannot be seen in any other combustion process as it is a thousand times faster than any other mode of combustion. PDE not only holds the capability of running effectively up to Mach 5 but it also changes the technicalities in space propulsion. The present paper is the extension of the previous study which is also a well characterized status report of PDE in different areas. The present study deals with the categorization of the design approach, computations & simulations, flow visualization, DDT & Thrust enhancement, PDRE’s, experimental detonation engines with some of the experience and research undertaken in Punjab Engineering College under the complete supervision and guidance of Prof. Tejinder Kumar Jindal followed by applications of PDE technology.
612. Más allá de la inseguridad ciudadana: la estigmatización territorial de las clases populares. Una aproximación a partir de una barrio "en disputa"
Authors: Ruiz Chasco Santiago
Published: December 2019

Este artículo va a tratar de arrojar algo de luz sobre un tema poco tratado en España, especialmente desde ópticas críticas, con el fin de abrir un espacio de debate en el que, desde diferentes posiciones (académicas y sociales), pueda llevarse a cabo una puesta en común de ideas, resultados de investigación y prácticas cotidianas. Para ello, comenzaremos explicando brevemente a qué nos estamos refiriendo cuando hablamos de “estigmatización territorial” como una de las caras de la moneda del capital simbólico colectivo (o territorializado) en la ciudad neoliberal. Un concepto sociológico que, frente a la inseguridad ciudadana, aporta claves fundamentales para comprender cómo se desarrolla el gobierno neoliberal de la inseguridad social a través de “cuestiones securitarias”, a través del dispositivo de seguridad ciudadana. Finalizaremos aportando nuestros hallazgos en una investigación sobre el barrio de Lavapiés (Madrid), a través del cual podremos señalar cómo opera semejante capital simbólico y la relación sociológica entre las tomas de posición y las posiciones sociales.
Spatial poetics, place, non-place and storyworlds: Intimate spaces for metaverse avatars
Authors: Ayiter Elif
Published: December 2019

This article will ask questions that connect the conceptions of Marc Augé's 'place/non-place' and Gaston Bachelard's 'poetic space' to the avatar of real-time, perpetual, online, three-dimensional virtual builder's worlds, also known as the metaverse. Are metaverses 'places' or 'non-places'? Do we actually live in the metaverse or do we just traverse these worlds very much in the sense that Marc Augé defines them as transitional loci that are assigned only to circumscribed and specific positions? The question following from this is whether there are nevertheless three-dimensionally embodied virtual spaces that go beyond being transitional 'non-places' to locations in which an imaginative relationship to architecture in the sense in which Bachelard describes them in his seminal work or that correspond to Marc Augé's definition of 'place' exist.
Algunas notas sobre la cronología y el posible carácter métrico de una inscripción nizarda (ILGN 8)
Authors: Bolaños Herrera Alberto , Del Hoyo Calleja Javier
Published: December 2019

A finales del siglo XIX diversos autores situaron en el monasterio de Cimiez (Niza) un fragmento de inscripción reutilizado como peldaño de escalera, desprovisto aparentemente de un contexto arqueológico definido. Por ello, distintos epigrafistas que la han estudiado no han llegado a un consenso en lo concerniente a su datación y a su interpretación, especialmente en lo que toca a su carácter métrico. Se han propuesto diferentes fechas comprendidas entre los siglos III y XII, y se ha especificado muy poco acerca de su forma métrica. Una detenida autopsia de la pieza, acompañada de un estudio en profundidad, provee ahora de datos relevantes acerca de estas cuestiones.
La vía romana del Najerilla. Una introducción a su estudio
Authors: Calonge Miranda Adrián
Published: December 2019

En este trabajo se ponen de manifiesto evidencias que demuestran la existencia de una vía romana secundaria de comunicación que enlazaba la ciudad de Tritium Magallum (Tricio, La Rioja) con la civitas de Nova Augusta (Lara de los Infantes) a través del paso natural de Canales de la Sierra (La Rioja). Gracias a los datos aportados por el comercio de cerámica tritiense, el estudio de las minas de metal de la Demanda y la pervivencia de esta por el valle del Najerilla en época medieval, abordaremos el trazado y la utilidad de esta vía de carácter secundario.
La Antigüedad clásica se recibe en las escuelas. República, valores cívicos y nacionalismo en los manuales de escuela media argentina (1920-1955)
Authors: Dell' Elicine Eleonora
Published: December 2019

En Argentina entre 1920 y 1955, el crecimiento sistemático de corrientes de derecha fuertemente vinculadas a la iglesia y al ejército se enmarcó y fue a su vez potenciado por la crisis del 29 y del modelo único agroexportador. En este contexto, los discursos nacionalistas y antiimperialistas cobraron fuerza inédita, encontrando canales de expresión fundamentalmente en la prensa y revistas de circulación periódica. Por diferentes razones que exploraremos a lo largo del artículo, las líneas de antagonismo que caracterizaban el debate político no acusaron una repercusión lineal en los discursos pedagógicos. Este registro flexible permitió que las sociedades antiguas constituyeran objeto de interés para un público amplio y no profesionalizado en los estudios históricos. En la actualidad, la concurrencia de un discurso nacionalista y de un discurso que ensalza lo inmediato pone en crisis seria la significatividad de estos estudios.
Antigüedad e Historia Social de la Medicina. Un breve apunte sobre Henry E. Sigerist
Authors: Sierra Martín César
Published: December 2019

En el presente artículo tenemos el objetivo de analizar el legado intelectual de los pioneros de la Historia social de la ciencia: John Bernal, Henry Sigerist y Benjamin Farrington. Esta generación de intelectuales, influida por los desastres segunda guerra mundial, propuso nuevos paradigmas de estudio que abrieron vías originales en la historia económica y social. Concretamente, nos centraremos en la asistencia pública sanitaria y las condiciones laborales de los trabajadores.
La Antigüedad vista por dos escritores anticlericales: Carmen de Burgos y Vicente Blasco Ibáñez
Authors: Romero Recio Mirella
Published: December 2019

Los escritores Carmen de Burgos y Vicente Blasco Ibáñez compartieron amistad, ideales y una admiración por el mundo Antiguo que quedó plasmada en su vida y en sus obras. Como tratará de mostrar este artículo, su fascinación por la Antigüedad condujo a ambos a alabar la alegría y la belleza pagana frente al fanatismo y la intransigencia cristiana. L os relatos de sus respectivos viajes a Italia dieron buena muestra de ello, aunque también lo hicieron algunas de sus obras literarias. En el caso de Blasco Ibáñez, destaca, además, su deseo de rodearse de una decoración ambientada en la Antigüedad en la casa que se hizo construir en la Malvarrosa (Valencia), donde podía contemplar el mar desde una terraza con pinturas de estilo griego y pompeyano. El artículo analiza las fotografías que la Fundación Vicente Blasco Ibáñez conserva de este espacio y donde ha sido posible identificar, en el techo, una copia del cuadro del centro de la pared sur del triclinio de la Casa de los Vetios que representa el suplicio de Dirce.
Como en las cavernas. Primitivismo y progreso en los cuentos de épocas pasadas de Emilia Pardo Bazán
Authors: Mora Rodríguez Gloria
Published: December 2019

Entre 1880 y 1921, Emilia Pardo Bazán (1851-1921) publicó más de medio millar de cuentos y narraciones cortas en periódicos y revistas ilustradas de gran difusión en España e Hispanoamérica como El Imparcial, La Esfera, La Ilustración Artística, La España Moderna, La Ilustración Española y Americana, Blanco y Negro, etc. Algunos de estos cuentos se basaban en personajes y episodios de la Antigüedad, demostrando ser buena conocedora de las fuentes grecolatinas y bíblicas, pero me centraré en dos «cuentos prehistóricos» escritos en 1907 y 1912 (con antecedentes en algunos artículos en la prensa de los años 90), que tienen un doble interés: por un lado, presentar los avances y novedades de la investigación en la nueva y polémica ciencia de la Prehistoria, al tiempo que la autora aprovecha la confrontación barbarie-civilización de los estudios sobre la evolución humana para denunciar los problemas de la mujer en la sociedad contemporánea.
Comparative study on the improvement of the gas exchange process efficiency of a high speed IC engine using swinging valve
Authors: Kovacs Laszlo , Szabo Szilard
Published: December 2019

Using poppet valves to control the air-fuel mixture entering and leaving the combustion chamber of an engine is just one among many other more flow efficient alternative solution. The geometry of the poppet valve and its valve seat are the main causes of the flow restriction in the internal combustion engines. The engine downsizing concept dictates to obtain more power from a given engine volume, therefore proportionally more air should be drawn into the cylinders to burn more fuel. These criteria best fulfilled with a new Swinging Valve (SwV) solution that enables the unhindered flow of air and exhaust gas through an engine’s cylinder. The filling of a cylinder is improved while the pumping losses are decreased. In this experiment, a Super Flow SF600 flow bench was used to examine a Suzuki SV650 motorcycle engine’s normal poppet valve cylinder head and a Swinging Valve cylinder head was constructed as well. First the flow parameters of the original cylinder head were obtained then the Swinging Valve head was investigated in the same way. The outcomes of the tests show the superiority of the new concept. The results will also be the base of further 0D/1D engine simulations.
Research in the mechanization of black locust renewal and planting
Authors: Major Tamás , Czupy Imre , Horváth Attila László , Papp Viktória , Kiss Andrea Tünde
Published: December 2019

Nowadays, the black locust (Robinia pseudoacacia) is the most current and the most widely used tree species in Hungary. Due to its penetration and the wide variety of application it’s worth to examine the different mechanization options of the reforestation technologies and their costs.
We provided our research in the area of Nyírerdő Nyírségi Erdészeti Zrt.
According to the tests it can be said, that the cost of the reforestations with root ripping is the most favourable and the reforestation or regeneration with planting costs the most. The disadvantage of the regeneration with root ripping is, that after its multiple application it can be observed the significantly degradation of the assortment composition and of the tree utilization income.
Систематическая структура урбанофлоры различных биотопов городов Орловской области
Authors: Khromova T.M. , Emelyanova O. Yu.
Published: December 2019

В статье представлены результаты многолетнего комплексного исследования эколого-биологических особенностей урбанофлоры различных биотопов городов Орловской области: Орла, Мценска, Ливен, Болхова, Малоархангельска, Новосиля и Дмитровска. Флора города Орла насчитывает 913 видов, Ливен – 786, Мценска – 777, Болхова – 780, Новосиля – 775, Малоархангельска – 776, Дмитровска – 777. В ходе исследований охарактеризована таксономическая структура урбанофлор как один из показателей зональной и эколого-топологической приуроченности флоры. Сопоставление полных флористических списков городов Орловской области показало высокую степень флористического сходства, что свидетельствует о высокой степени единства урбанофлор и сглаживании зональных черт. Отмечается высокая степень сходства аборигенной и адвентивной фракции флор различных городов. Высокая корреляция между систематической структурой ведущих семейств различных типов биотопов связана с единством состава флоры региона и свидетельствует о тесном взаимодействии естественной и урбанизированной флор.
FANATISME PENGGEMAR KPOP DALAM BERMEDIA SOSIAL DI INSTAGRAM
Authors: Rinata Asfira Rachmad , Dewi Sulih Indra
Published: December 2019

Abstract. Korean wave has become a big phenomenon in Indonesia, enthusiasm and passion for K-pop culture has led to fanaticism for fans. The distribution of K-pop content on social media such as Instagram gives fans space to participate in supporting their idols and this is one of the factors forming the fanaticism of k-pop fans. This study aims to determine the fanaticism of kpop fans in social media on Instagram as well as how kpop fans respond in responding to hoax and negative information from favorite idols. This research uses descriptive qualitative methods and data collection techniques used are interviews, and literature study. The selection of informants used a purposive sampling technique. The results showed the fact that fanaticism fans in social media on Instagram evaluated through fan activities such as Meaning Making, Meaning Sharing such as interpreting K-pop idol posts as motivation in research, making posts amazed and happy for K-pop idols . Poaching by following  fansite accounts and making fanfiction and making videos. Collecting such as uploading pictures about the official kpop merchandise needed and knowledge building  with fellow fans. Fanaticism, kpop fans, also through fan responses, asking for information, hoaxes and negatives from their idols responded with many variations such as annoyance, anger until heartache. And to seek clarification of the truth of the news that is by looking at reliable sources such as the official Instagram account K-pop idol, official Instagram account management artist to the Korean major media such as Soompi, Allkpop, and press realease provided by artist management
Kontrol Informal dan Formal Terhadap Yakuza di Jepang
Authors: Fadli Zaki Ainul , Nabila Femiga Salsa
Published: December 2019

(Title: Informal and Formal Controls Against Yakuza in Japan) This research explores how far yakuza's development in Japan and to find social factors which affecting its change. The methods used are literary research. This paper discusses the implementation of formal and informal social control in Japanese society and its ties to yakuza. The fact that yakuza, as Japanese mafia, have been intervening its society for decades, is a strange phenomenon since Japan is known for its low crimes as portrayed on most of the media. The formal control section will be focused on the National Police Agency of Japan, while the informal control section will be focused on Japanese society, emphasizing on its culture. Both controls leave the door open for yakuza to establish power in society. This may lead to the conclusion that Japan’s social control is relatively weak.
Simpler semantics for computational and cognitive linguistics
Authors: Evans Hywel
Published: December 2019

Certain consequences are considered regarding a simpler, more cognitively plausible treatment of semantics in SignBased Construction Grammar, a cognitive, unification- based theory of language. It is proposed that a construction grammar may be able to improve its coverage of core linguistic phenomena in line with minimalist goals (Chomsky 1993). Suggestions are offered regarding relative clauses and wh-expressions to show that a more straightforward account is available, one that allows a unified treatment of scope for quantifiers and wh-expressions.
Scalar representations in the semantics of Japanese. From measurements to pragmatics –The case of dokoroka–
Authors: Grzelak Szymon
Published: December 2019

This study looks into the scalar properties exhibited by some grammaticalized (and subsequently pragmaticalized) expressions of Japanese that are lexically based on the noun tokoro ‘place’. In particular, the argument will be focused on a conjunctive particle p dokoroka q ‘q, let alone p’. In most cases, both p and q can be ascribed some pragmatically inferred scalar values reflecting gradable properties, but the assessment of such a common scale is difficult in some cases. We argue that such “non-scalar” instances of dokoro-ka, occurring in enumerations, can be represented as cardinalities in the semantic model.
Speech-event conceptions behind discoursepragmatic characteristics of the construction ‘do and see’ in East Asian languages
Authors: Izutsu Katsunobu , Koguma Takeshi
Published: December 2019

This study addresses the semantic and functional diversities of the construction literally meaning ‘do and see’ in three East Asian languages: Japanese, Korean, and Ainu. The literal sense is dominant in Ainu, the tentative sense is predominant in Japanese, and the experiential sense as well as the tentative sense is very common in Korean. The study advances a discourse-pragmatic analysis with respect to speech-event conceptions that underlie the different senses of the construction.
'To be tensed or not to be tensed?' The case of Vietnamese
Authors: Phan Trang , Duffield Nigel
Published: December 2019

In this paper, we scrutinise the interpretation and distribution of a number of morphemes that serve as means of expressing temporal/aspectual relations in Vietnamese, investigating whether they should treated as genuine tense and aspect markers. The main goals of the study are two-fold: (i) empirically, to offer a comprehensive description of Vietnamese tense and aspect, in both pre-verbal and post-verbal domains; (ii) theoretically, to offer new pieces of evidence supporting the claim that Tense and Aspect exist as independent functional categories in Vietnamese.
Cognitive Aspects of Relative Clause Production In Oral and Written Narratives
Authors: Pu Ming-Ming
Published: December 2019

The present study aims to investigate relative clause production in Chinese and English from a cognitivefunction approach that explores underlying cognitive, semantic, and discourse-pragmatic factors operative in discourse processing.  With this approach we are able to account for both general and specific distributional patterns of RCs between the two languages on the one hand and between speech and writing on the other, using narrative data elicited from native speakers of both languages.
Teichmüller dynamics and unique ergodicity via currents and Hodge theory
Authors: McMullen Curtis T.
Published: December 2019

We present a cohomological proof that recurrence of suitable Teichmüller geodesics implies
unique ergodicity of their terminal foliations.
This approach also yields concrete estimates for periodic foliations and
new results for polygonal billiards.
Modelling and Analysis of PV-Based Shunt Active Filter with BESS and Conservative Power Theory for Enhancing Power Quality
Authors: Ramalingam Gomathi , Choudhary Ajay Kumar , Mikkili Suresh
Published: December 2019

Power Quality has always been a major concern ever since the increase in the usage of many power electronic loads such as Personal Computers (PCs), TVs, variable frequency drives in nearly every household. These loads are a major source of harmonics into the distribution system. Unbalanced Three-phase loads or different single-phase loads result in unbalance in the three-phase voltages and currents in the grid. Equipment damage, Loss of data, nuisance tripping, overheating of wires, relay tripping are few of the major issues caused due to power quality. Also, there is an increase in the awareness about the various power quality issues as well as its ill-effects amongst the consumers. Hence, it is essential to improve the quality of the power supplied.

Active and Passive filters play a huge role in the mitigation of power quality issues. In recent years, usage of active filters has increased because tuning is possible for various harmonic elimination and active filters when combined with a storage system can provide active as well as reactive power compensation. The fast depletion of non-renewable sources of energy and its effect on the environment has shifted the focus on the usage of non-renewable energy sources such as solar energy, wind energy, etc for the production of electricity.

In this research work, solar energy is combined with shunt active filter for the mitigation of various power quality issues occurring in a grid-connected non-linear and unbalanced three-phase load. The active power filter will provide reactive power compensation to the non-linear load and active power delivery for unbalanced loads such the grid current and voltage will remain balanced and the stress on the grid is reduced while meeting the load demand. A battery system is also integrated to store the excess energy that may be generated by the Photo-Voltaic(PV) array and acts as a source of energy when PV array output is low or nil. Conservative Power Theory is used for controlling the power injection into the system by the Voltage Source Converter(VSC). The proposed system is verified using MATLAB/SIMULINK.
Power Quality Enhancement Using Lyapunov Based Voltage Source Inverter for the Grid Integrated Renewable Energy System
Authors: R Vinifa , A Kavitha , A Immanuel Selwynraj
Published: December 2019

The evolution of high performance power electronic converters makes a feasible way to integrate the Renewable Energy System (RES) to the grid. High performance in terms of stability, good transient and steady state response, load variations is achieved in this work using Current Controlled Voltage Source Inverters (CCVSI) by deriving the control law using Lyapunov function at the expense of a time varying reference current. In this work, a single phase equivalent circuit is represented for the three phase grid connected renewable energy system, and mathematical modeling is developed to design the controller. Analysis using Lyapunov based controller is carried out to ensure the real and reactive power flow from the renewable energy system to the grid connected with the non linear load. The reference current for the controller is generated using the Symmetrical Component theory. This theory requires no transformation and desired source power factor can be achieved. To exhibit the efficacy of the Lyapunov controller, the simulation is carried out using MATLAB/Simulink environment. It is observed that the desired power factor is obtained and Total Harmonic Distortion (THD) is within the IEEE limits in the grid side. The performance of the system is validated experimentally and the results are compared with the conventional hysteresis controller for the same application.
Evaluation of non-Newtonian Viscosities of Liquid Foods in Swallowing Process Using Inclined Flow Channel Instrument
Authors: Yoshida Masanori , Tsuruta Yuko , Takako Yuichiro , Kudo Ayaka , Fujiwara Ryosuke
Published: December 2019

To evaluate the non-Newtonian viscosities of liquid foods thickened for assistance of swallowing in nursing-care practice, an inclined flow channel instrument was investigated for development into a structurally simple and easy-to-use viscometer. Experimental analysis of the flows of Newtonian and non-Newtonian test liquids in the instrument derived a dimensionless relation expressing changes of the friction coefficient in the flow process which was indicated by the relative flow length, considering the shear rate level in the swallowing process. A methodology to evaluate uniquely the viscosities of liquid foods undergoing the swallowing process was presented using the measurements such as the flow length and velocity in the instrument.
Communication strategies and co-construction of meaning in ELF: Drawing on “Multilingual Resource Pools”
Authors: Vettorel Paola
Published: December 2019

Research into communication strategies and ELF is a thriving area of investigation, that has so far looked into cooperative strategies leading to successful communication and mutual understanding, or how miscommunication is resolved, above all in academic as well as business ELF (BELF) contexts, and, more recently, international students’ communities.

ELF interactions have been shown to be characterized by the speakers’ mutual cooperation in the co-construction of meaning. Repetition, paraphrasing, as well as self- and other-repair and pre-emptive moves have emerged as important strategies, together with the exploitation of multilingual resources and repertoires. Communication strategies, rather than a mere compensation device, are thus to be considered an essential element in the process of effective communication, in that they are strategically used by speakers as part of “communicative capability.”

This paper explores communication strategies emerging from data in the Leisure subsection of the VOICE corpus. Through a qualitative Conversation Analysis approach, the analysis focuses particularly on interactional strategies employed to ensure mutual understanding and effective communication. Data have been first analysed through keywords signalling request for clarification and/or repetition, and then qualitatively focusing on how individual multilingual resources are naturally deployed and shared in the strategic co-construction of meaning and comprehension, particularly as to concepts and ideas that are lingua-culturally connoted.
The effects of a 12-week jump rope exercise program on body composition, insulin sensitivity, and academic self-efficacy in obese adolescent girls
Authors: Kim Jun , Son Won-Mok , Headid III Ronald J. , Pekas Elizabeth J. , Noble John M. , Park Song-Young
Published: December 2019

Background

Childhood obesity is strongly associated with the development of cardiovascular disease (CVD). Exercise interventions have been used for obese children and adolescents to prevent the manifestation of CVD risks, such as hypertension and insulin resistance (IR). Additionally, obesity has been shown to be linked to low self-efficacy in adolescents, which has been shown to negatively impact academic performance. Therefore, the purpose of this study was to examine the effects of a 12-week jump rope exercise program on body composition, CVD risk factors, and academic self-efficacy (ASE) in obese adolescent girls with prehypertension.

Methods

Adolescent girls with prehypertension and obesity (n = 48, age 14–16 years) were randomly assigned to either the jump rope exercise group (EX, n = 24) or the control group (CON, n = 24). Body composition, blood pressure (BP), blood glucose, insulin levels, homeostatic model assessment of insulin resistance (HOMA-IR) (marker of IR), and ASE were assessed before and after 12 weeks of exercise training or control.

Results

There were significant group × time interactions following the 12-week exercise program for body fat percent, waist circumference (WC), systolic blood pressure (SBP), blood glucose, insulin levels, and HOMA-IR, which were all significantly reduced (p < 0.05). A significant improvement (p <0.05) was observed in task difficulty preference (TDP) and self-regulatory efficacy (SRE) following exercise training. Additionally, ASE was strongly correlated (r = −0.58) with body composition.

Conclusions

This study provides evidence that jump rope exercise intervention can be a useful therapeutic treatment to improve CVD risk factors and ASE in obese adolescent girls with prehypertension.
Air occlusion in insulin pumps of children and adolescents with type 1 diabetes
Authors: Knoll Michelle M. , Vazifedan Turaj , Gyuricsko Eric
Published: December 2019

Background

Insulin pumps are a frequently used technology among youth with type 1 diabetes. Air bubbles within insulin pump tubing are common, preventing insulin delivery and increasing the risk of large glycemic excursions and diabetic ketoacidosis (DKA). We sought to determine the prevalence of air bubbles in insulin pump tubing and identify factors associated with clinically significant air bubbles.

Methods

Fifty-three subjects were recruited over 65 office visits. The insulin pump tubing was visualized, and any air bubbles were measured by length. The length of air bubbles was then converted to time without insulin at the lowest basal rate. Generalized linear model (GLM) was used to determine the associations between air bubble size and other variables.

Results

Of the 65 encounters, 45 had air bubbles in the tubing. Five (5/65 = 7.7%) encounters had a time without insulin of more than 60 min. Air bubble size was inversely correlated with time since infusion set change (p < 0.001), and directly correlated with age of the subject (p = 0.049).

Conclusions

Significantly more air bubbles were found in the tubing of insulin pumps soon after infusion set change and with older subjects, suggesting a relationship with the technique of filling the insulin cartridge and priming the tubing.
Association between unstable angina and CXCL17: a new potential biomarker
Authors: Gong Fu-han , Xiao Xiao-qiang , Zhang Xue-ping , Long Li , Huang Sheng , Wang Xue-sheng , Shu Zhen-lin , Yang Yong-sheng
Published: December 2019

Atherosclerosis and chemokines are strongly related, but the role of the chemokine CXCL17 in atherogenesis is still poorly understood. We aim to investigate the serum CXCL17 levels in different stages of patients with coronary heart disease and explore whether these differences contribute to atherosclerosis. In the current prospective study, we enrolled 48 patients with unstable angina (UA), 51 patients with stable angina (SA) and 41 patients for the control group (CG). All subjects were diagnosed by coronary angiography and Gensini score was used to evaluate the severity of coronary artery disease. The CXCL17 levels were determined using ELISA, while lipid metabolism indicators and high sensitivity C-reactive protein (hs-CRP) were detected by automatic biochemical analyzer. We observed that the unstable angina group had higher CXCL17 levels compared with the stable angina and the control group. The logistic regression analysis showed that CXCL17 was an independent risk factor for unstable angina. Our results showed that CXCL17 was also statistically correlated with hs-CRP, while it was irrelevant with Gensini score. CXCL17 levels were associated with activity of inflammatory response and the instability of atherosclerotic plaques. These results suggest that CXCL17 elevation may be a potential new biomarker of unstable angina.
CyclinD1 is a new target gene of tumor suppressor miR-520e in breast cancer
Authors: Liang Quan , Yao Qingjuan , Hu GuoYing
Published: December 2019

Objective

To investigate the involvement of miR-520e in the modulation of cancer-promoting cyclinD1 in breast cancer.

Methods

A reverse transcription-polymerase chain reaction (RT-PCR) was applied to test the regulation of miR-520e on cyclinD1. The binding of miR-520e to 3’-untranslated region (3’UTR) of cyclinD1 mRNA was predicted by an online bioinformatics website. The effect of miR-520e on the luciferase reporters with binding sites of miR-520e and 3’UTR of cyclinD1 mRNA was revealed using a luciferase reporter gene assay. The correlation between miR-520e and cyclinD1 in clinical breast cancer samples was detected through quantitative real-time PCR.

Results

The expression of cyclinD1 was gradually reduced as the dose of miR-520e increased. Anti-miR-520e obviously induced cyclinD1 in breast cancer cells. After anti-miR-520e was introduced into the cells, the inhibition of cyclinD1 expression mediated by miR-520e was reversed. The binding of miR-520e with cyclinD1 was revealed via bioinformatics. Under the treatment of dose-increasing miR-520e or anti-miR-520e, the luciferase activities of cyclinD1 3’UTR vector were lower or higher by degrees. However, the activity of the mutant vector was not affected at all. Finally, in clinical breast cancer tissues the negative correlation of miR-520e with cyclinD1 was revealed.

Conclusion

In conclusion, cyclinD1 is a new target of miR-520e in breast cancer.
Independent engineering of individual plasmon modes in plasmonic dimers with conductive and capacitive coupling
Authors: Křápek Vlastimil , Konečná Andrea , Horák Michal , Ligmajer Filip , Stöger-Pollach Michael , Hrtoň Martin , Babocký Jiří , Šikola Tomáš
Published: December 2019

We revisit plasmon modes in nanoparticle dimers with conductive or insulating junction resulting in conductive or capacitive coupling. In our study, which combines electron energy loss spectroscopy, optical spectroscopy, and numerical simulations, we show the coexistence of strongly and weakly hybridised modes. While the properties of the former ones strongly depend on the nature of the junction, the properties of the latter ones are nearly unaffected. This opens up a prospect for independent engineering of individual plasmon modes in a single plasmonic antenna. In addition, we show that Babinet’s principle allows to engineer the near field of plasmon modes independent of their energy. Finally, we demonstrate that combined electron energy loss imaging of a plasmonic antenna and its Babinet-complementary counterpart allows to reconstruct the distribution of both electric and magnetic near fields of localised plasmon resonances supported by the antenna, as well as charge and current antinodes of related charge oscillations.
Reliability of the conditioned pain modulation paradigm across three anatomical sites
Authors: Nuwailati Rania , Curatolo Michele , LeResche Linda , Ramsay Douglas S. , Spiekerman Charles , Drangsholt Mark
Published: December 2019

Background and aims

Conditioned Pain Modulation (CPM) is a measure of pain inhibition-facilitation in humans that may elucidate pain mechanisms and potentially serve as a diagnostic test. In laboratory settings, the difference between two pain measures [painful test stimulus (TS) without and with the conditioning stimulus (CS) application] reflects the CPM magnitude. Before the CPM test can be used as a diagnostic tool, its reliability on the same day (intra-session) and across multiple days (inter-session) needs to be known. Furthermore, it is important to determine the most reliable anatomical sites for both the TS and the CS. This study aimed to measure the intra-session and inter-session reliability of the CPM test paradigm in healthy subjects with the TS (pressure pain threshold-PPT) applied to three test sites: the face, hand, and dorsum of the foot, and the CS (cold pressor test-CPT) applied to the contralateral hand.

Methods

Sixty healthy participants aged 18–65 were tested by the same examiner on 3 separate days, with an interval of 2–7 days. On each day, testing was comprised of two identical experimental sessions in which the PPT test was performed on each of the three dominant anatomical sites in randomized order followed by the CPM test (repeating the PPT with CPT on the non-dominant hand). CPM magnitude was calculated as the percent change in PPT. The Intraclass Correlation Coefficient (ICC), Coefficient of Variation (CV), and Bland-Altman analyses were used to assess reliability.

Results

PPT relative reliability ranged from good to excellent at all three sites; the hand showed an intra-session ICC of 0.90 (0.84, 0.94) before CPT and ICC of 0.89 (0.83, 0.92) during CPT. The PPT absolute reliability was also high, showing a low bias and small variability when performed on all three sites; for example, CV of the hand intra-session was 8.0 before CPT and 8.1 during CPT. The relative reliability of the CPM test, although only fair, was most reliable when performed during the intra-session visits on the hand; ICC of 0.57 (0.37, 0.71) vs. 0.20 (0.03, 0.39) for the face, and 0.22 (0.01, 0.46) for the foot. The inter-session reliability was lower in all three anatomical sites, with the best reliability on the hand with an ICC of 0.40 (0.23, 0.55). The pattern of absolute reliability of CPM was similar to the relative reliability findings, with the reliability best on the hand, showing lower intra-session and inter-session variability (CV% = 43.5 and 51.5, vs. 70.1 and 73.1 for the face, and 75.9 and 78.9 for the foot). The CPM test was more reliable in women than in men, and in older vs. younger participants.

Discussion

The CPM test was most reliable when the TS was applied to the dominant hand and CS performed on the contralateral hand. These data indicate that using the CS and TS in the same but contralateral dermatome in CPM testing may create the most reliable results.
Synthesis and characterization of K5Sn2OF11
Authors: Stoll Christiane , Seibald Markus , Huppertz Hubert
Published: December 2019

The potassium oxidofluoridostannate(IV) fluoride K5Sn2OF11 was synthesized via a solid-state route at T = 300°C in arc-weldeded copper ampoules. It crystallizes in the orthorhombic system in the acentric space group Ama2 (no. 40) with a unit cell volume of V = 2.5727(4) nm3. The cell parameters are a = 1758.3(2), b = 2452.3(2) and c = 596.7(1) pm. As a main structural motif, K5Sn2OF11 exhibits two different kinds of dinuclear [Sn2OF11]5‒ units, which are embedded into a matrix consisting of potassium cations and fluoride anions. The substance was characterized by single-crystal and powder X-ray diffraction, as well as by FT-IR spectroscopy.
New cation-disordered quaternary selenides Tl2Ga2
TtSe6 (Tt=Ge, Sn)
Authors: Babizhetskyy Volodymyr , Levytskyy Volodymyr , Smetana Volodymyr , Wilk-Kozubek Magdalena , Tsisar Oksana , Piskach Lyudmyla , Parasyuk Oleg , Mudring Anja-Verena
Published: December 2019

Two new quaternary selenides of the α-TlSe structure type have been synthesized and characterized. Single crystal X-ray diffraction analysis has revealed that Tl2Ga2SnSe6 crystallizes with space group I4/mmc, a = 8.095(1), c = 6.402(1) Å, with a refined composition of Tl1−

x
Ga1−

y
Sn
y
Se2 (x = y = 0.345(5)), Z = 4, R1 = 0.028; wR2 = 0.066. The crystal structure of the isostructural compound Tl2Ga2GeSe6 has been determined by means of powder X-ray diffraction: space group I4/mmc, Z = 4, a = 8.0770(4), c = 6.2572(5) Å, refined composition Tl1−

x
Ga1−

y
Ge
y
Se2, x = 0.343(5), y = 0.35(2), (R
B(I)
 = 0.084; R
P
 = 0.041; R
Pw
 = 0.058). According to their optical absorption spectra all compounds are semiconductors with relatively narrow direct band gaps of 2.15(3) and 2.05(5) eV for the Ge and Sn phase, respectively.
Evaluation of the clinical efficacy of 1.2% atorvastatin by CBCT in the treatment of periodontal intrabony defects: A randomized controlled clinical trial
Authors: Shirke Prerna Y. , Kolte Abhay P. , Kolte Rajashri A. , Bawanakar Pranjali V.
Published: December 2019

Background. Atorvastatin (ATV), which belongs to the statin class of drugs, is the formidable inhibitor of 3-hydroxy-2-methyl-glutaryl coenzyme A reductase. This clinical trial evaluated and compared the clinical and radiographic changes in chronic periodontitis (CP) patients, obtained through 1.2% ATV as an adjunct to scaling and root planing (SRP) in the treat-ment of intraosseous defects.

Methods. Twenty CP patients, with a minimum of one pair of bilateral intraosseous, were randomly selected for this split-mouth study. Group 1 included 20 sites treated with SRP and subgingival delivery of a placebo gel, whereas an equal number of sites in group 2 were treated by SRP along with subgingival delivery of 1.2% ATV gel. The plaque index (PI), modified sulcus bleeding index (mSBI), probing pocket depth (PPD) and clinical attachment level (CAL) were evaluated at baseline and 3- and 6-month intervals, while the intraosseous defect was assessed at baseline and 6-month interval using cone-beam computed tomography (CBCT). Paired t-test was used to determine statistical significance.

Results. A greater reduction in the mean PPD and gain in CAL was found in group 2 compared to group 1 at 3- and 6-month intervals. Furthermore, a significantly greater bone fill was obtained in group 2 (1.70±0.54 mm) compared to group 1 (0.22±0.43 mm) after six months.Conclusion. ATV, as an adjunct to SRP, enhanced periodontal regeneration, as a noninvasive way to treat periodontal in-traosseous defects.
Need-supportiveness and athlete well-being: Coaches' competence-support at risk in the elite sport context throughout the season
Authors: Berntsen Hedda , Ivarsson Andreas , Kristiansen Elsa
Published: December 2019

The aim of this study was to explore how coaches’ behaviour affected athletes’ well-being by examine: (a) the potential change in perceptions of need-support from the coach (over an academic year), and (b) the within-person relationship between the three aspects of need-supportiveness and subjective vitality at the end of the winter sport season. 102 youth elite student athletes completed ta questionnaire three times. Bayesian growth curve analyses showed that the levels of relatedness and autonomy support were stable and high throughout the year. In contrast, competence support decreased during the season. In addition, the results showed a credible positive within-person relationship between changes in all three facets of need-supportiveness from the coach and vitality measured at the end of the season which support SDT tenets. These findings indicate the importance of need-support for athletes' wellbeing, and that competence support needs extra attention in the elite sport context where the competence need is constantly challenged.
Go soft or go home? A review of empirical studies on the role of self-compassion in the competitive sport setting
Authors: Röthlin Philipp
Published: December 2019

Self-compassion describes a supportive attitude towards oneself. Research outside the sport context suggests that self-compassion might be beneficial in terms of psychological processes that are helpful for athletic performance. At the same time, there are reasons to assume that athletes may fear a negative influence of SC on their self-improvement motivation. Therefore, it seemed worthwhile to clarify the role of self-compassion in the competitive sport setting by reviewing the current research. A literature search was conducted using PsycINFO, PsycARTICLES, PSYNDEX, and SPORTDiscus. Eligibility criteria were peer-reviewed publication, publication in English, original research and research investigating self-compassion in competitive athletes. From 17 publications that met the inclusion criteria, we identified 19 studies, most of which were quantitative, employing a cross-sectional design. Additionally, we found only one intervention study, one experimental study and four qualitative studies using interviews. We provided an integrative narrative description of the study aims, hypotheses, methodological characteristics and study results. Based on the reviewed findings we concluded that future research should relate their research question more often to existing theoretical models and that more intervention and longitudinal studies are needed. Thus far, qualitative studies highlight the potential ambivalence of athletes towards SC. Quantitative research indicates that SC is beneficial for athletes’ well-being and their ability to deal with adversities in sports, whereas the role of self-compassion for self-improvement motivation remains unclear.