bluuebunny/crossref_metadata_2025 huggingface dataset:
Плавление и электромиграция в тонких пленках хрома
Authors: Sharma M. , Kumar P. , Иржак А.В. , Kumar S. , Pratap R. , фон Гратовски С.В. , Шавров В.Г. , Коледов В.В.
Published: March 2020

Abstract Chromium films with a thickness of 10–40 nm deposited onto silicon substrates by magnetron sputtering are subjected to the action of electric current induced by the tip of an atomic force microscope (AFM) cantilever in air under regular environmental conditions. The melting process at the nanoscale, electric field-induced migration of material, and the chemical reaction of chromium oxidation that occur in melt craters formed around the region affected by the current are investigated using optical and scanning electron microscopies, AFM, and Raman spectroscopy. The flow of melted material induced by electric current is accompanied by the formation and motion of an array of spherical nanoparticles in the melt crater along its periphery. We propose that the formation of nanodrop array at relatively low current densities can be explained by the chromium oxidation reaction and the surface tension of melted material on the silicon substrate.
Предпереходные явления в области фазовых переходов первого рода в ионно-молекулярных кристаллах
Authors: Алиев А.Р. , Ахмедов И.Р. , Какагасанов М.Г. , Алиев З.А.
Published: March 2020

Raman spectroscopy was used to study the molecular relaxation processes in sulfates Li2SO4, Na2SO4, K2SO4, carbonates Li2CO3, Na2CO3, K2CO3, perchlorates NaClO4, KClO4 and nitrates Ca(NO3)2, Sr(NO3)2, Ba(NO3)2. It has been established that in the systems under study, phase transitions of the first kind are stretched in nature (diffuse phase transition): in sulfates, carbonates and perchlorates they are structural phase transitions, and in nitrates this is a crystal-melt phase transition. The existence of a pre-transition region was found in all the crystals studied.
Поверхностные волны на границе фоторефрактивного кристалла и среды с положительной керровской нелинейностью
Authors: Савотченко С.Е.
Published: March 2020

The types of nonlinear surface waves of extraordinary polarization that occur at the interface between a photorefractive crystal and a medium with positive Kerr nonlinearity are described. It is shown that nonlinear surface waves of an asymmetric profile of two types can exist in such a system. The waves of the first type decay when moving away from the interface without oscillations both in the depth of the photorefractive crystal and in the Kerr crystal, and the waves of the second type decay in the depth of the photorefractive crystal with oscillations. Dispersion relations are obtained, and the conditions for the existence of all the described types of waves are indicated depending on the optical characteristics of the crystals.
Неэмпирические расчеты структуры и устойчивости нанотрубок на основе монохалькогенидов галлия
Authors: Карпов В.В. , Бандура А.В. , Эварестов Р.А.
Published: March 2020

For the first time first-principles calculations were performed to get the dependences of strain energy and band gap of achiral nanotubes obtained by rolling up monolayers of gallium (II) sulfide and selenide. The hybrid density functional method (with 13% of the Hartree-Fock exchange) within the CRYSTAL17 computer code was used. The empirical Grimme correction was applied to describe the dispersion interactions between layers accurately. As a result of simulations of nanotubes with different chirality and different diameters, the minimum diameters of the stable single-walled nanotubes were determined, which retain the continuity of the chemical bonds on the outer nanotube surface. It was shown that the strain energy dependence on a diameter obeys a classical law of inverse squares and is the same for «zigzag» and «armchair» nanotubes.
Механические свойства ультрамелкозернистого алюминия в области температур 4.2-300 K
Authors: Орлова Т.С. , Шпейзман В.В. , Мавлютов А.М. , Латынина Т.А. , Аверкин А.И. , Тимашов Р.Б.
Published: March 2020

Abstract The tensile curves of ultrafine-grained (UFG) aluminum structured by high pressure torsion (HPT) technique have been obtained at 4.2 and 77 K for the first time as well as the temperature dependence of its yield strength in the range 4.2–300 K. The analysis of the results in correlation with microstructure parameters and comparison with the results of such studies for UFG aluminum structured by equal-channel angular pressing (ECAP) technique has been performed. It has been shown that the HPT-processed aluminum has a significantly higher yield strength at low temperatures than the ECAP-processed aluminum. Combination of high strength and plasticity (440 MPa and 55%, respectively) was obtained at 4.2 K, which makes this material attractive for practical use at low temperatures. The analysis of the obtained results indicates that, at room and low (77 K) temperatures, the plasticity of the UFG aluminum with a grain size less than 1 μm largely depends on the nature of the grain size distribution, as well as on the type and state of the grain boundaries (equilibrium or nonequilibrium), which opens up prospects for controlling the value of plasticity by creating a given microstructural design while maintaining a high level of strength of ultrafine-grained materials.
Фотолюминесценция гетероструктур CdTe/ZnTe с номинальными толщинами слоев CdTe от 1 до 8 монослоев, выращенных методом атомного наслаивания
Authors: Агекян В.Ф. , Серов А.Ю. , Философов Н.Г. , Karczewski G.
Published: March 2020

The luminescence of CdTe layers with a nominal thickness of 1, 2, 4, and 8 monolayers grown by atomic layer epitaxy in ZnTe matrix was studied. It is shown that layers with a thickness of 1 and 2 monolayers are homogeneous, while layers with a nominal thickness of 4 and 8 monolayers are the planar QD arrays. The sizes of QDs and their size dispersion increase with an increase in the nominal thickness of CdTe layer. The luminescence excitation spectra of CdTe layer in the samples vary significantly. It has been shown that, depending on the energy distance between the CdTe and ZnTe exciton levels, the ratio of contributions to the energy transfer via the exciton ZnTe and charge carriers varies greatly.
К теории инициирующего действия непрерывного нагрева на структурные перестройки и температуру фазового перехода в кристаллах
Authors: Хон Ю.А.
Published: March 2020

A model and kinetic theory of structural changes in crystals upon continuous heating are proposed. Nonadiabatic transitions of atoms between different states of a system of nuclei and electrons are taken into account. Non-adiabatic transitions initiate structural rearrangements determined by a change in the short-range order upon the redistribution of electron density. It was shown that continuous heating stimulates structural changes in the crystal and lowers the temperature of a known phase transition.
Экспериментальное исследование коэффициента теплопроводности в тонких пленках на основе одностенных углеродных нанотрубок
Authors: Тамбасов И.А. , Воронин А.С. , Евсевская Н.П. , Кузнецов Ю.М. , Лукьяненко А.В. , Тамбасова Е.В. , Горнаков М.О. , Дорохин М.В. , Логинов Ю.Ю.
Published: March 2020

Thin films based on single walled carbon nanotubes with a thickness of 11 ± 3 to 157 ± 18 nm were formed using vacuum filtration. The thermal conductivity coefficient in thin films was studied depending on the thickness and temperature up to 450 K using the 3ω method. It was found that, in the region of 49 nm, the supplied heat from the gold strip began to efficiently propagate into the plane of the thin film. The thermal conductivity coefficient for thin films with a thickness of 49 ± 8 nm was measured according to the 3ω method for bulk samples. It was found that the thermal conductivity in thin films based on single walled carbon nanotubes strongly depends on the thickness and temperature. The thermal conductivity increased sharply (~ 60 times) with increasing thickness from 11 ± 3 to 65 ± 4 nm. In addition, it was revealed that the thermal conductivity coefficient for 157 ± 18 nm thin film rapidly decreased from 211 ± 11 to 27.5 ± 1.4 W · m-1 · K-1 for 300 and 450 K, respectively.
Термическая устойчивость карбинофуллеренов C-=SUB=-38-=/SUB=-, C-=SUB=-62-=/SUB=- и C-=SUB=-64-=/SUB=-
Authors: Подливаев А.И.
Published: March 2020

Abstract The thermal stability of recently predicted carbinofullerenes C_38, C_62, and C_64 was examined using the molecular dynamics method. Their decomposition channels and temperature dependences of the lifetime were characterized. The activation energies and frequency factors in the Arrhenius law were determined. New isomers of carbinofullerenes C_38 and C_62, which are more thermally stable than the initial carbinofullerenes, were found.
Long-Term Effectiveness and Cost-Effectiveness of Videoconference-Delivered Cognitive Behavioral Therapy for Obsessive-Compulsive Disorder, Panic Disorder, and Social Anxiety Disorder in Japan: One-Year Follow-Up of a Single-Arm Trial
Authors: Matsumoto Kazuki , Hamatani Sayo , Nagai Kazue , Sutoh Chihiro , Nakagawa Akiko , Shimizu Eiji
Published: March 2020

Background

Face-to-face individual cognitive behavioral therapy (CBT) and internet-based CBT (ICBT) without videoconferencing are known to have long-term effectiveness for obsessive-compulsive disorder (OCD), panic disorder (PD), and social anxiety disorder (SAD). However, videoconference-delivered CBT (VCBT) has not been investigated regarding its long-term effectiveness and cost-effectiveness.

Objective

The purpose of this study was to investigate the long-term effectiveness and cost-effectiveness of VCBT for patients with OCD, PD, or SAD in Japan via a 1-year follow-up to our previous 16-week single-arm study.

Methods

Written informed consent was obtained from 25 of 29 eligible patients with OCD, PD, and SAD who had completed VCBT in our clinical trial. Participants were assessed at baseline, end of treatment, and at the follow-up end points of 3, 6, and 12 months. Outcomes were the Yale-Brown Obsessive-Compulsive Scale (Y-BOCS), Panic Disorder Severity Scale (PDSS), Liebowitz Social Anxiety Scale (LSAS), Patient Health Questionnaire–9 (PHQ-9), General Anxiety Disorder–7 (GAD-7), and EuroQol-5D-5L (EQ-5D-5L). To analyze long-term effectiveness, we used mixed-model analysis of variance. To analyze cost-effectiveness, we employed relevant public data and derived data on VCBT implementation costs from Japanese national health insurance data.

Results

Four males and 21 females with an average age of 35.1 (SD 8.6) years participated in the 1-year follow-up study. Principal diagnoses were OCD (n=10), PD (n=7), and SAD (n=8). The change at 12 months on the Y-BOCS was −4.1 (F1=4.45, P=.04), the change in PDSS was −4.4 (F1=6.83, P=.001), and the change in LSAS was −30.9 (F1=6.73, P=.01). The change in the PHQ-9 at 12 months was −2.7 (F1=7.72, P=.007), and the change in the GAD-7 was −3.0 (F1=7.09, P=.009). QALY at 12 months was 0.7469 (SE 0.0353, 95% Cl 0.6728-0.821), and the change was a significant increase of 0.0379 (P=.01). Total costs to provide the VCBT were ¥60,800 to ¥81,960 per patient. The set threshold was ¥189,500 ($1723, €1579, and £1354) calculated based on willingness to pay in Japan.

Conclusions

VCBT was a cost-effective way to effectively treat Japanese patients with OCD, PD, or SAD.

Trial Registration

University Hospital Medical Information Network Clinical Trials Registry UMIN000026609; https://upload.umin.ac.jp/cgi-open-bin/ctr_e/ctr_view.cgi?recptno=R000030495
The Determination of Relevant Contextual Factors for the Interpretation of Intervention Studies: a Stepwise Approach with Online Information (Preprint)
Authors: Van der Elst Michael , Schoenmakers Birgitte , Dierckx Eva , De Donder Liesbeth , De Roeck Ellen , Duppen Daan , Fret Bram , Schols Jos M.G.A. , Kempen Gertrudis I.J.M , De Lepeleire Jan ,   D-SCOPE Consortium
Published: March 2020

BACKGROUND

The role of the context within intervention studies is often ignored. To consider the context in future research, one needs to know whether enough information is available, and a uniform methodology to study the local context in a standardized way is desirable. Through the World Wide Web, a lot of information is nowadays available.

OBJECTIVE

The present study aims to test the feasibility of studying the local context with online information and to provide a stepwise approach how to detect these relevant contextual factors which might moderate the effect of an intervention.

METHODS

The present study is framed within the D-SCOPE project, where a complex intervention by means of home visits was set up to improve the access to tailored care in 3 municipalities (Ghent, Knokke-Heist and Tienen). A case study of these three municipalities was performed to determine which contextual factors could influence the D-SCOPE intervention, a five-step approach was designed and tested: (1) a theoretical/conceptual discussion of relevant contextual factor domains was held; (2) a search was done to find appropriate web-based public datasets which covered these topics with standardized information (e.g., official statistics); (3) a list of all identified contextual factors was made (inventory); (4) a concise list with the assumedly most relevant contextual factors was made by two independent reviewers to reduce the long list of contextual factors+; and (5) a Nominal Grouping Technique was applied.

RESULTS

Based on the aims of the D-SCOPE intervention, the research team decided that the datasets should cover sociodemographic contextual factors, socioeconomic contextual factors, contextual factors related to care supply/availability or care use and contextual factors related to the local government. The team also decided to use only standardized data. Three public web-based datasets were found resulting in an inventory of 157 contextual factors. After the selection by two independent reviewers, 41 contextual factors were left over and presented in the Nominal Grouping Technique. According to the Nominal Grouping Technique, contextual factors such as: dependency ratio (65+/20-64y), availability of a community center, percentage of people aged 65 or more living alone, and the total resources of the community social security system were considered as most decisive.

CONCLUSIONS

The present study shows that the five-step approach is feasible to determine relevant contextual factors that might affect the results of an intervention study. Such information may be used to correct for in the statistical analyses and for interpretation of the outcomes of intervention studies.

CLINICALTRIAL

none
Comparison of Endoscopy First and Laparoscopic Cholecystectomy First Strategies for Patients With Gallstone Disease and Intermediate Risk of Choledocholithiasis: Protocol for a Clinical Randomized Controlled Trial (Preprint)
Authors: Aleknaite Ausra , Simutis Gintaras , Stanaitis Juozas , Jucaitis Tomas , Drungilas Mantas , Valantinas Jonas , Strupas Kestutis
Published: March 2020

BACKGROUND

The optimal approach for patients with gallbladder stones and intermediate risk of choledocholithiasis remains undetermined. The use of endoscopic retrograde cholangiopancreatography for diagnosis should be minimized as it carries considerable risk of postprocedural complications, and nowadays, less invasive and safer techniques are available.

OBJECTIVE

This study compares the two management strategies of endoscopic ultrasound before laparoscopic cholecystectomy and intraoperative cholangiography for patients with symptomatic cholecystolithiasis and intermediate risk of choledocholithiasis.

METHODS

This is a randomized, active-controlled, single-center clinical trial enrolling adult patients undergoing laparoscopic cholecystectomy for symptomatic gallbladder stones with intermediate risk of choledocholithiasis. The risk of choledocholithiasis is calculated using an original prognostic score (the Vilnius University Hospital Index). This index in a retrospective evaluation showed better prognostic performance than the score proposed by the American Society for Gastrointestinal Endoscopy in 2010. A total of 106 participants will be included and randomized into two groups. Evaluation of bile ducts using endoscopic ultrasound and endoscopic retrograde cholangiography on demand will be performed before laparoscopic cholecystectomy for one arm (“endoscopy first”). Intraoperative cholangiography during laparoscopic cholecystectomy and postoperative endoscopic retrograde cholangiopancreatography on demand will be performed in another arm (“cholecystectomy first”). Postoperative follow-up is 6 months. The primary endpoint is the length of hospital stay. The secondary endpoints are accuracy of the different management strategies, adverse events of the interventions, duct clearance and technical success of the interventions (intraoperative cholangiography, endoscopic ultrasound, and endoscopic retrograde cholangiography), and cost of treatment.

RESULTS

The trial protocol was approved by the Vilnius Regional Biomedical Research Ethics Committee in December 2017. Enrollment of patients was started in January 2018. As of June 2020, 66 patients have been enrolled.

CONCLUSIONS

This trial is planned to determine the superior strategy for patients with intermediate risk of common bile duct stones and to define a simple and safe algorithm for managing choledocholithiasis.

CLINICALTRIAL

ClinicalTrials.gov NCT03658863; https://clinicaltrials.gov/ct2/show/NCT03658863.

INTERNATIONAL REGISTERED REPORT

DERR1-10.2196/18837
Contrastive Corpus Analysis: Investigating the Use of Opinion Verbs in Italian by Greek Learners
Authors: Florou Katerina
Published: March 2020

In this paper, we investigate the usage of opinion verbs in Italian as a foreign language and any errors this usage may cause, taking into account intralanguage and interlanguage factors. First of all, we analyze the frequency of opinion verb types, in a Greek corpus of native speakers and we investigate the frequency of the same type of verbs in an Italian Translator Learner Corpus compiled by the same learners. Secondly, we explore to what extent there are errors regarding the use of opinion verbs. The data will show that learners, in some cases, commit errors because of their mother tongue influence while in others they avoid using opinion verbs because of this particular lack of knowledge.
SURFACE MORPHOLOGY AND MICROHARDNESS BEHAVIOR OF 316L IN HAP-PMEDM
Authors: Singh Gurpreet , Lamichhane Yubraj , Bhui Amandeep Singh , Sidhu Sarabjeet Singh , Bains Preetkanwal Singh , Mukhiya Prabin
Published: March 2020

The development of biomaterials for implants nowadays requires materials with superior mechanical and physical properties for enhanced osseointegration and sustained longevity. This research work was conducted to investigate the influence of nano hydroxyapatite (HAp) powder mixed electrical discharge machining (PMEDM) on surface morphology and microhardness of modified 316L stainless steel surface. The chosen process parameters were discharge current, pulse on/off duration and gap voltage in order to analyze the selected output responses. HAp concentration (15 g/l) along with reverse polarity was kept constant for current experimentation. The experimental results testified that surface morphology of PMEDM surface was significantly improved along with augmentation of 79% in microhardness (HV) of HAp modified surface of medical grade stainless steel. Furthermore, XRD and SEM characterization confirmed the deposition of calcium, phosphorous and inter-metallic compounds on HA-PMEDMed surface. The surface thus produced is expected to facilitate better bone-implant adhesion and bioactivity.
OPTIMIZATION OF MULTI-PASS FACE MILLING PARAMETERS USING METAHEURISTIC ALGORITHMS
Authors: Diyaley Sunny , Chakraborty Shankar
Published: March 2020

In this paper, six metaheuristic algorithms, in the form of artificial bee colony optimization, ant colony optimization, particle swarm optimization, differential evolution, firefly algorithm and teaching-learning-based optimization techniques are applied for parametric optimization of a multi-pass face milling process. Using those algorithms, the optimal values of cutting speed, feed rate and depth of cut for both roughing and finishing operations are determined for having minimum total production time and total production cost. It is observed that the teaching-learning-based optimization algorithm outperforms the others with respect to accuracy and consistency of the derived solutions as well as computational speed. Two statistical tests, i.e. paired t-test and Wilcoxson signed rank test also confirm its superiority over the remaining algorithms. Finally, these metaheuristics are employed for multi-objective optimization of the considered multi-pass milling process while concurrently minimizing both the objectives.
Sampling the Porridge: A Comparison of Ordered Variable Regression with F and R2 and Multiple Linear Regression with Corrected F and R2 in the Presence of Multicollinearity
Authors: Baird Grayson L. , Bieber Stephen L.
Published: March 2020

Differences between the multiple linear regression model with Corrected R2 and Corrected F and the ordered variable regression model with R2 and F when intercorrelation is present are illustrated with simulated and real-world data.
Report — 2nd meeting of mediation of knowledge and scientific culture
Authors: Santos Diogo
Published: March 2020

On 3rd and 4th February, at Pavilhão do Conhecimento (Lisbon, Portugal), Ciência Viva organized the 2nd meeting of Mediation of Knowledge and Scientific Culture. This edition reunited politicians, teachers, science communicators and researchers to discuss culture, science communication and museums. The organization promoted workshops and invited three keynote speakers: Abdulaziz Alhegelan, Brian Trench and Ngaire Blankenberg who led discussions around cultural differences, science communication processes such as evaluation or impact, and how museums need to change to became more neutral.
Image of doctor of Italy in the XIV century through the eyes of a contemporary (based on the example of “Invectives against a doctor” by Francesco Petrarch)
Authors: Bushlia A. A.
Published: March 2020

This article presents an attempt to reconstruct the image of doctor and the state of medicine in Italy in the XIV century. The work has an interdisciplinary character, is based on the traditions of the social and cultural history of medicine. The main source is Francesco Petrarch’s essay “Invectives against a doctor” (the mid-XIV century). The study of the main source, which is a subjective reﬂection of the processes and phenomena of that time, is supplemented by a careful study of the cultural and historical component, the picture of the world at that time. The author concludes that Petrarch, a representative of the Renaissance worldview, uses medieval methods of appealing to authorities. In order to create a voluminous reconstruction, it becomes necessary to study the medieval worldview (Le Goﬀ J., Truon N.). Signiﬁcant attention is paid to the disclosure of such issues as the place of a symbol, hierarchy, words in the culture of that time. Such components of the picture of the world as corporatism, attitude to virtue and sin, manual labor, authorities, science, art and medicine are involved. Negative components of the image of doctor and medicine of Italy in the XIV century, as evidenced by Petrarch, are supplemented with an alleged positive or ideal component, which results in a volumetric characteristic of the issue.
Authentic Development: Key Aspects of the Concept
Authors: Ilinskaya Svetlana G.
Published: March 2020

The article focuses on the social, political, philosophical and economic aspects of the concept of authentic development. Besides being based on Russia’s historical experience and socio-cultural values, the project relies on certain socio-humanitarian scientific studies conducted by domestic scholars of previous generations. By applying interdisciplinary and systematic approaches, the author is able to map out not only the socio-political and humanitarian components of the concept, but also a whole complex of problems the project is aimed to solve.
Migration Policy in the Programs of FRG’s Leading Political Parties
Authors: Amiantova Irina S. , Ivanova Ekaterina A.
Published: March 2020

The presented study is devoted to the reflection of migration policy concepts in the program documents of the leading political parties in Germany. The purpose of this work is to conduct a comprehensive assessment of migration policy concepts of Germany’s leading parties, incorporated in their programs. The research methodology is based on a combination of comparative descriptive analysis and elements of case study. The empirical basis of the research is constituted by program materials of 6 parties and party blocs, whose representatives became part of the Bundestag, according to the results of the 2017 federal elections. The author believes that despite certain differences, the majority of parties hold to the consensus stance on migration policy, which may entail maintaining the current course for the foreseeable future. Significant changes in migration policy are possible only if the leadership of the CDU/CSU is able to convince the leaders of the SPD to continue tightening migration policy in terms of restricting the flow of refugees. Attempting to sustain the existing model of migration policy with the current dynamics of the socioeconomic situation can lead to an increase in the popularity of AfD. However, this course of events does not threaten the stability of German political system, provided AfD does not ally itself with another influential party.
The Influence of Modern English Loanwords on the Verbal Code of Russian Culture
Authors: Alyunina Yulia M. , Nagel Olga V.
Published: March 2020

The aim of the article is to introduce the authors’ perspective on how English loanwords are changing the structure and the content of the verbal code of Russian culture and the Russian linguistic pictures of the world, as well as on how the latter might change the former. Having used the continuous sampling method, observation method, and synchronic-diachronic approach (lexical semantic analysis, comparative semantic analysis, morphological and quantitative analysis), the authors have allocated and analyzed 487 loanwords, which led to the introduction of three distinguished types of interaction between the verbal code of the Russian language and foreign loanwords. The first interaction type is the process whereby the loanwords adapt semantically to the rules of the host language and culture, which leads to the complete change of a loanword meaning or its modification (15 words). The second interaction type is connected with the loanwords bringing new concepts to a host language and indicating borrowed ideas and objects (270 words). The differentiation of these two interaction types is based on the results of a synchronic and diachronic study of the loanwords in Russian. The analyzed interaction types are linked to the changes in the host language’s verbal code. A concept of a “hybrid linguistic picture of the world” is being introduced as the one constituting the third interaction type (201 words). According to the authors, the hybrid linguistic picture of the world is developing at the current stage of the Russian language and is caused by the process of the morphological adaptation of English loanwords, which is manifested in the production of hybrid words and Russian words being actively substituted by English borrowings.
Hans Lofgren and Alan Shima (eds): After Consensus: Critical Challenge and Social Change in America
Authors: Carter Dale
Published: March 2020

-
Gerald Vizenor and A. Robert Lee: 'Postindian Conversations'
Authors: Coleman Michael C.
Published: March 2020

-
PROJETOS DE ENRIQUECIMENTO CURRICULAR DE ATIVIDADES FÍSICAS E DESPORTIVAS EM ESCOLAS PÚBLICAS DE PORTUGAL
Authors: Soares Jorge , Antunes Hélio
Published: March 2020

Este estudo teve por objetivo determinar a gênese dos projetos de enriquecimento curricular ligados à atividade física e desportiva de escolas públicas de Portugal e compreender os seus resultados e fatores de sucesso junto à comunidade educativa. Realizou-se uma entrevista com quatro coordenadores responsáveis pelos projetos. Os projetos orientavam-se para três categorias de missão: exercício físico e saúde; desenvolvimento socioafetivo e oferta desportiva através do clube escolar. A diversidade e a especificidade dos projetos ajustados a cada contexto, bem como as competências e o compromisso do professor responsável, foram consideradas elementos determinantes. Os fatores de sucesso e os parâmetros de avaliação dos resultados dos projetos são explicados por indicadores quantitativos de participação dos jovens e não pelos impactos que causam na educação, na aptidão física e desportiva dos jovens. Não foi encontrada uma ligação coerente entre os objetivos dos projetos e os indicadores utilizados na avaliação dos resultados.
AS IMPLICAÇÕES DO COACHING SCIENCE NOS ESPORTES DE AVENTURA: UM ESTUDO DE REVISÃO SISTEMÁTICA
Authors: Iha Tayná , Ciampolini Vitor , Zeilmann Brasil Vinicius , Milistetd Michel
Published: March 2020

O objetivo deste estudo foi analisar a produção científica sobre o coaching nos esportes de aventura, de modo a identificar as características dos artigos, os direcionamentos metodológicos e as tendências temáticas. Para a obtenção dos artigos foi realizada uma revisão sistemática segundo as orientações do ENTREQ e PRISMA. Foram selecionados 24 artigos indexados nas bases de dados Scielo, SPORTDiscus, Web of Science, PubMed e PsycINFO. Os artigos incluídos foram, em sua maioria, publicados nos últimos cinco anos e originários do Reino Unido. O método mais utilizado foi o qualitativo, pelas técnicas de entrevistas e observações. Já as tendências temáticas dividiram-se em: atuação e desenvolvimento do treinador de esportes de aventura (TEA). Conclui-se que as características do ambiente de prática (ex: risco e instabilidade) é o que influencia diretamente a atuação e desenvolvimento do TEA. Apesar desta área ser recente, acredita-se que ela já apresenta conhecimentos de base para estudos futuros.
A construção da docência no ensino superior a partir do conceito de experiência
Authors: Nedel Victor Hugo Oliveira , Lacerda Miriam Pires Corrêa de , Santos Andreia Mendes dos
Published: March 2020

A construção da identidade docente configura-se como importante processo para que os professores desempenhem a docência ligada aos seus alunos. Esta pesquisa buscou analisar as percepções de experiência de professores do ensino superior em instituições públicas e privadas em Porto Alegre. Para atingir os objetivos propostos, foi aplicado um questionário com a caracterização da amostra, a apresentação de afirmações na Escala Likert e uma pergunta aberta versando sobre as recomendações dos sujeitos para os jovens professores do ensino superior. Os resultados apontaram que os sujeitos manifestam indiferença quanto à afirmação de que a experiência seja um fator de relevância na formação do docente. Pode-se constatar que os sujeitos concordam que a identidade do professor se constrói na educação básica. Verifica-se que a maioria dos sujeitos acredita que um doutorado não seja uma exigência para ser um bom professor no nível superior.
Structure, dielectric and piezoelectric properties of Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 ceramics
Authors: Hamzioui Louanes , Kahoul Fares , Boutarfaia Ahmed , Guemache Abderezak , Aillerie Michel
Published: March 2020

This study describes structure, dielectric and piezoelectric properties of
Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 (PZT-PMS) ceramics prepared by
conventional mixed-oxide route and sintered at up to 1180?C. The prepared
ceramics was characterized by X-ray diffraction and scanning electron
microscopy. The piezoelectric constants, dielectric constant, Young?s
modulus and electromechanical factors were measured in broad temperature
range. The results showed that the PZT-PMS ceramics is composed of
tetragonal and rhombohedral phases and has the average grain size of about 1
?m. The Pb[(Zr0.45,Ti0.5)(Mn0.5,Sb0.5)0.05]O3 ceramics has excellent
dielectric and piezoelectric properties for wide practical applications.
Thus, planar coupling factor of 0.70, poled dielectric constant of 8215, the
Curie temperature of 345?C and dielectric loss of 6% were attained in the
PZT-PMS ceramics sintered at 1180?C.
Research on fuel cell based on photovoltaic technology
Authors: Liu Jing
Published: March 2020

To investigate the hybrid thermal energy storage in photovoltaic fuel cells, a hybrid thermal energy storage control system for photovoltaic fuel cells is explored model construction and simulation. The correlations between the system components and the external factors are analyzed. The results show a positive correlation of the state of charges between the storage battery and the hydrogen storage tank at 0-15 hours, while no correlation exists between them at 15-35 hours. Meanwhile, the sunshine intensity and the photovoltaic output share a positive correlation. In summary, the hybrid thermal energy storage system is critical for photovoltaic fuel cells. The charging and discharging of the battery depends on the photovoltaic intensity. The constructed grouping management model for storage battery is outstanding and satisfies the operational requirements of photovoltaic fuel cells.
Complete denture parameters reflecting the satisfaction of dentists and patients
Authors: Ahmed Abdul , Chaturvedi Saurabh , Das Gotam , Khan Muhammad , Suleman Ghazala , Sibghatullah Muhammad
Published: March 2020

Background/Aim. Patients? expectations with regard to their complete dentures are usually high. It is quite challenging to meet the patient?s criteria for denture satisfaction. Moreover, it also becomes a challenging task when the patient?s expectation exceeds the patient?s satisfaction regardless of the denture quality. The aim of this study was to determine the correlation in the denture satisfaction levels between the dentist and complete denture wearers. Methods. The study included 134 completely edentulous participants, between 48 and 65 years of age. The data were recorded through a validated questionnaire having a Cronbach ? validity of 85%. Sociodemographic data, patients? priorities, dentists' and patients' satisfaction with the dentures were recorded and rated on a Likert scale (1 to 5). Spearman?s correlation was applied to measure the similarity between the dentist?s and patient?s satisfaction score. Results. The mean dentists' and patients' overall satisfaction scores were calculated as 3.58 ? 0.74 and 3.538 ? 0.521, respectively. Participants ? 60 years of age and females showed a higher correlation than younger patients and men, while the employed participants showed a stronger correlation between dentist?s and patient?s satisfaction, compared to the opposite. In the educated participants a positive, moderate correlation between dentist's and patient's satisfaction was shown. The correlation between dentist?s satisfaction with occlusion and patient?s satisfaction with comfort was moderately strong (p < 0.05); weakly positive correlation (p < 0.05) was found between dentist?s satisfaction with the quality of denture and extension and patient?s satisfaction with aesthetics, mastication, phonetics, and comfort. Conclusion. A positive correlation between the dentists' and patients' satisfaction regarding denture quality was shown in older-age patients, females, as well as employed and educated patients. Improving dentist-patient communication is the most useful strategy to improve patients? satisfaction with their dentures.
A Randomized Trial Evaluating the Efficacy and Safety of Fast-Acting Insulin Aspart Compared With Insulin Aspart, Both in Combination With Insulin Degludec With or Without Metformin, in Adults With Type 2 Diabetes (ONSET 9)
Authors: Lane Wendy S. , Favaro Elena , Rathor Naveen , Jang Hak C. , Kjærsgaard Maiken I.S. , Oviedo Alejandra , Rose Ludger , Senior Peter , Sesti Giorgio , Soto Gonzalez Alfonso , Franek Edward
Published: March 2020

OBJECTIVE

To evaluate the efficacy and safety of fast-acting insulin aspart (faster aspart) compared with insulin aspart (IAsp), both with insulin degludec with or without metformin, in adults with type 2 diabetes not optimally controlled with a basal-bolus regimen.

RESEARCH DESIGN AND METHODS

This multicenter, double-blind, treat-to-target trial randomized participants to faster aspart (n = 546) or IAsp (n = 545). All available information, regardless of treatment discontinuation or use of ancillary treatment, was used for evaluation of effect.

RESULTS

Noninferiority for the change from baseline in HbA1c 16 weeks after randomization (primary end point) was confirmed for faster aspart versus IAsp (estimated treatment difference [ETD] −0.04% [95% CI −0.11; 0.03]; −0.39 mmol/mol [−1.15; 0.37]; P < 0.001). Faster aspart was superior to IAsp for change from baseline in 1-h postprandial glucose (PPG) increment using a meal test (ETD −0.40 mmol/L [−0.66; −0.14]; −7.23 mg/dL [−11.92; −2.55]; P = 0.001 for superiority). Change from baseline in self-measured 1-h PPG increment for the mean over all meals favored faster aspart (ETD −0.25 mmol/L [−0.42; −0.09]); −4.58 mg/dL [−7.59; −1.57]; P = 0.003). The overall rate of treatment-emergent severe or blood glucose (BG)–confirmed hypoglycemia was statistically significantly lower for faster aspart versus IAsp (estimated treatment ratio 0.81 [95% CI 0.68; 0.97]).

CONCLUSIONS

In combination with insulin degludec, faster aspart provided effective overall glycemic control, superior PPG control, and a lower rate of severe or BG-confirmed hypoglycemia versus IAsp in adults with type 2 diabetes not optimally controlled with a basal-bolus regimen.
Use of Premixed Insulin, Metformin, and a Glucagon-Like Peptide 1 Receptor Agonist as a Therapeutic Approach for Uncontrolled Type 2 Diabetes
Authors: Ehrhardt Nicole , Fazeli Sasan , Rao Sanjana , Amdur Richard
Published: March 2020

OBJECTIVE | To explore the use of premixed insulin, a glucagon-like peptide 1 (GLP-1) receptor agonist, and metformin as combination therapy for type 2 diabetes.

DESIGN AND METHODS | All adult patients with type 2 diabetes who had been prescribed premixed insulin and a GLP-1 receptor agonist simultaneously at our outpatient clinic were selected for retrospective review. We reviewed A1C, weight, cumulative daily insulin dose, and adverse events over 12 months.

RESULTS | A total of 72 patients received premixed insulin and a GLP-1 receptor agonist, of which 32 met inclusion criteria. The average duration of type 2 diabetes for these patients was 14.2 ± 7.1 years. Mean A1C at baseline was 10.5 ± 2.1%. At 12 months, mean A1C was 8.3 ± 1.9%. The change in mean A1C after 12 months was −2.2% (95% CI −3.433 to −1.014, P <0.0001). At 12 months, the mean cumulative insulin dose was 33.3 units less than before the therapy change (95% CI −57.13 to −9.46, P = 0.0030). Average weight change at 12 months was −2.2 kg (95% CI −27.6 to 37.6, P = NS). After 12 months, 61% of included patients (19 of 31) had an A1C ≤8%. Six additional patients were not included in analysis because they stopped the regimen after <3 months because of adverse events.

CONCLUSION | Despite a decreased cumulative daily dose of insulin, patients with historically uncontrolled type 2 diabetes using metformin, premixed insulin, and a GLP-1 receptor agonist in combination experienced improved glycemic control over 12 months. Prospective randomized trials are needed to better assess the potential benefit of this combination therapy.
External Marginal Gap Evaluation of Different Resin-filling Techniques for Class II Restorations—A Micro-CT and SEM Analysis
Authors: Sampaio CS , Garcés GA , Kolakarnprasert N , Atria PJ , Giannini M , Hirata R
Published: March 2020

Clinical Relevance

Secondary caries are the main reason for the failure of restorations, class II being the most affected. Techniques that promote less gap percentage are important. Flowable bulk fill composites used at such locations have been shown to decrease gap formation while being a faster procedure than an incremental technique.

Purpose:

To evaluate gap formation of class II restorations, resin-filling techniques using microcomputed tomography (μCT) and scanning electronic microscopy (SEM) are discussed.

Methods and Materials:

Class II cavities were prepared in 30 third molars and analyzed in distal and mesial views. Prime&Bond Universal adhesive was applied in all teeth and divided into five groups (n=6): G1, SS+HIT (Spectra Smart+Horizontal Incremental Technique); G2, SS+OBL (Oblique Incremental Technique); G3, SDR+BFT (Surefil SDR+Bulk Fill Technique); G4, SDR+SS (SDR placed on cervical floors from mesial and distal boxes (not light cured), followed by incremental layering with SS and light curing incrementally with the horizontal technique); and G5, BEZ+BFT (Bulk EZ+BFT). All light-curing procedures were performed with high-mode/1200 mW/cm2, Bluephase Style 20i. Teeth were scanned twice (first scan, empty tooth; second scan, filled tooth after light curing) by μCT. Acquired μCT data were evaluated with software looking for gaps at the external mesial and distal margins and submitted to statistical analysis (one-way analysis of variance and least significant differences post hoc test). Validation of the μCT analysis was performed by SEM.

Results:

G5 showed the lowest gap formation percentage, similar to G4 (p=0.20). G4 also showed statistical similarities to G1 and G3 (p>0.05). G2 showed the highest percentages, similar to G1 (p=0.10) but different from the rest of the groups (p<0.05). SEM validated the μCT technique by showing qualitative similar images regarding external marginal gap.

Conclusions:

The dual-cure composite and the use of flowable nonpolymerized plus horizontal filling technique showed the best marginal adaptations. The μCT technique was validated for visualization of gap formation after being compared to the SEM technique.
Strategi Anti Fraud dalam Pengelolaan Dana Desa
Authors: Poima Agri Christy , Nugraheshty Hapsari Apriana
Published: March 2020

Peningkatan jumlah kucuran dana desa yang dilakukan pemerintah ternyata tidak sejalan dengan pengelolaan yang baik. Terbukti dengan ditemukannya beberapa kasus fraud dalam pengelolaan dana desa. Penelitian ini bertujuan untuk mengetahui potensi fraud dan strategi anti fraud dalam pengelolaan dana desa di Desa Karangtengah, Kecamatan Tuntang, Kabupaten Semarang. Penelitian ini merupakan penelitian deskriptif kualitatif.  Sumber data dalam penelitian ini diperoleh dari data primer melalui wawancara mendalam dan dokumentasi. Teknik analisis yang digunakan yaitu reduksi data, penyajian data dan penarikan kesimpulan. Jenis fraud yang diteliti dalam penelitian ini adalah fraud dalam pelaporan keuangan. Hasil dalam penelitian ini menunjukkan bahwa tidak ditemukannya potensi fraud dalam pengelolaan dana desa karena adanya penerapan strategi anti fraud yang dilakukan di Desa Karangtengah.
Peran Pencapaian Tujuan BUMDes Mandiri Jaya dalam Pengelolaan Dana Desa di Desa Sepakung Kabupaten Semarang
Authors: Lestari Putri Ayu , Hapsari Aprina Nugrahesthy Sulistya
Published: March 2020

Tujuan dari penelitian mendiskripsikan peran BUMDes Mandiri Jaya dalam mengelola dana desa di Desa Sepakung, Kabupaten Semarang. Teori yang digunakan dalam penelitian ini teori desa dan dana desa serta teori Badan Usaha Milik Desa (BUMDes). Jenis penelitian kualitatif dengan teknik pengumpulan data wawancara mendalam dan dokumentasi. Teknik analsis data penelitian ini menggunakan teknik triangulasi. Teknik triangulasi adalah teknik pemeriksa keabsahan data atau kebenaran data dengan melalui langkah – langkah yang terdiri dari: reduksi, penyajian data, dan penarikan kesimpulan. Hasil penelitian menunjukkan bahwa peran BUMDes Mandiri Jaya secara umum sudah dilakukan sesuai dengan Peraturan Menteri Desa Pembangunan Daerah Tertinggal, dan Transmigrasi Republik Indonesia Nomor 4 Tahun 2015 Pasal 2. Namun dilihat dari seluruh perannya, analisis yang dilakukan masih terdapat kendala dalam implementasi peran BUMDes Mandiri Jaya antara lain: belum terlaksannya wadah penyalur hasil pertanian desa ke pasar tradisional, kurangnya pemahaman pengelola tentang BUMDes, keberadaan BUMDes Mandiri belum diketahui oleh masyarakat sekitar, terbatasnya modal yang dimiliki oleh BUMDes Mandiri Jaya, serta kendala dalam menemukan kesepakatan bersama untuk ide pengembangan objek wisata yang di Desa Sepakung. Bagi penelitian selanjutnya diharapkan melakukan identifikasi kendala secara lebih detail dalam pengelolaan BUMDes serta memperluas narasumber guna untuk mendapatkan informasi yang lengkap.
Mecanismos alternativos de solución de conflictos. Análisis bibliométrico 2009-2018: base de datos Scopus
Authors: Silva Gutiérrez Blanca Noemí , Chávez Meléndez Jorge Alan
Published: March 2020

El objetivo del presente estudio consistió en realizar un análisis bibliométrico de la producción académica en el campo de los mecanismos alternativos de solución de conflictos (MASC) en la base de datos Scopus. Lo anterior con el propósito de identificar en esta temática los indicadores por año, autor, afiliación, país o territorio, tipo de documento y área del conocimiento. Se aplicó la metodología de análisis bibliométrico descrita por Escorcia (2008) y Arias (28 de noviembre de 2014), que consiste en realizar técnicas estadísticas que tienen como propósito evaluar el proceso de investigación y su evolución. El estudio fue de carácter cuantitativo longitudinal con descripción de tendencias de la producción científica. Como parte de los principales resultados, se identificó que el 2015 fue el año que contó con el mayor número de registros sobre el tema, con un total de 80 documentos publicados en la base de datos, considerando que Scopus cuenta con registros desde el año de 1985. Mientras que el autor que más publicaciones tuvo sobre el término MASC fue el investigador Cheung So, de la Universidad de Hong Kong, con un total de 19 documentos. De igual forma, se localizó que el país con más publicaciones en dicha base de datos fue Estados Unidos con 369 documentos entre los años de 1985 y 2018. Si bien en Scopus se tiene registro desde 1985, el periodo de análisis correspondió al decenio del 2009 al 2018. A pesar de que se observó un incremento en las publicaciones sobre los MASC, cabe destacar que se identificó un decremento significativo en la publicación de documentos alusivos al tema a partir del año 2015.
Capacitación docente en línea para atención de estudiantes universitarios con TDAH
Authors: Salinas Padilla Heidi Angélica , Díaz Perera Juan José , Montiel Cantarell Gabriela Guadalupe
Published: March 2020

El propósito del presente estudio fue evaluar el impacto de una capacitación docente diseñada en un ambiente virtual de aprendizaje que tiene como meta proveer a los docentes de la Universidad Autónoma del Carmen (Unacar) de los conocimientos necesarios para atender a los alumnos que padecen trastorno por déficit de atención con hiperactividad (TDAH). Se realizó una investigación de tipo correlacional, con un diseño de tipo cuasi experimental de un solo grupo con pre y postest, transeccional. Teniendo una población de 227 profesores de tiempo completo, la muestra se conformó de 25 docentes pertenecientes a todas las dependencias de educación que integran la institución; la selección fue no probabilística. El instrumento para la recolección de datos fue un cuestionario que buscó conocer el nivel de actitud de los docentes. Se desarrolló un análisis por puntaje y, para probar si existió un incremento significativo en la actitud, se realizó la prueba t de Student entre la fase pre y postest. Los resultados obtenidos reflejan un incremento significativo por parte de los docentes en la actitud de inclusión hacia los estudiantes con TDAH y una mayor atención en la diversidad en el aula.