bluuebunny/crossref_metadata_2025_split huggingface dataset:
Спектроскопия и кинетика люминесценции ионов Pr-=SUP=-3+-=/SUP=- в K-=SUB=-3-=/SUB=-LuSi-=SUB=-2-=/SUB=-O-=SUB=-7-=/SUB=- : Pr-=SUP=-3+-=/SUP=-
Authors: Пустоваров В.А. , Ивановских К.В. , Хатченко Ю.Е. , Bettinelli M. , Shi Q. 
Published: April 2019

Abstract—The luminescent characteristics of K_3LuSi_2O_7:Pr^3+ (1%), which is a promising optical material for the use as a scintillator, have been studied using a set of techniques. The luminescence spectra of K_3LuSi_2O_7:Pr^3+ (1%) contain two bands in the UV-range with peaks at 284 and 330 nm, which correspond intraconfigurational 5 d → 4 f transitions in the Pr^3+ ions. The radiation in the visible and near IR range (480–850 nm) has been represented by the intraconfigurational 4 f → 4 f transitions. The kinetics of 5 d → 4 f -luminescence contains a build-up stage (τ_rise ∼ 7–12 ns), nonexponential decay stage (τ_1/2 ∼ 60 ns), and a slow component of the μs-range when excited by high-frequency (∼8 MHz) synchrotron radiation of the X-ray range. The fast component of the decay (τ = 54 ns) dominates in the decay kinetics of luminescence along with the build-up stage while the contribution of the μs decay component is less than 0.5% at the excitation by an pulse electron beam (5Hz). The excitation spectra of d – f - and f–f -photoluminescence in the ultraviolet and vacuum ultraviolet range that are measured using synchrotron radiation reveal features that are caused by both intracenter transitions and processes related to the energy transfer from the intrinsic electronic excitations to the impurity center.
Анализ причин концентрационного тушения люминесценции в кристаллофосфорах Zn-=SUB=-2-=/SUB=-SiO-=SUB=-4-=/SUB=- : Mn
Authors: Онуфриева Т.А. , Красненко Т.И. , Зайцева Н.A. , Бакланова И.В. , Ротермель М.В. , Иванова И.В. , Попов И.Д. , Самигуллина Р.Ф. 
Published: April 2019

AbstractThe analysis of the unified series of single-phase Zn_2 – 2 x Mn_2 x SiO_4 samples ( x ≤ 0.2) has provided the possibility to determine the optimal dopant concentration x = 0.13 for the maximum luminescence intensity. It has been established that the dominating mechanism of concentration luminescence quenching and excitation energy dissipation is the oxidation of some Mn^2+ activating ions and the growth of defectness in the luminophore due to this process Phosphors.
Синтез и люминесцентные свойства титанатов висмута Bi-=SUB=-1.6-=/SUB=-Ho-=SUB=-x-=/SUB=-Ti-=SUB=-2-=/SUB=-O-=SUB=-7-delta-=/SUB=- и Bi-=SUB=-1.6-=/SUB=-Mg-=SUB=-0.1-=/SUB=-Ho-=SUB=-x-=/SUB=-Ti-=SUB=-2-=/SUB=-O-=SUB=-7-delta-=/SUB=-
Authors: Ищенко А.В. , Королева М.С. , Власов М.И. , Истомина Е.И. , Пийр И.В. 
Published: April 2019

AbstractPyrochlores Bi_1.6Ho_ x Ti_2O_7 – δ and Bi_1.6Mg_0.1Ho _ x Ti_2O_7 – δ, where x = 0, 0.01, 0.05, and 0.1, and Bi_1.5Ho_ x Ti_2O_7 – δ, where x = 0.25 and 0.5, have been synthesized and their structural, optical, and luminescence properties have been studied. As a result of analyzing the data obtained experimentally and the available theoretical data, it is shown that the intrinsic luminescence of the samples is due to the O2 p ↔ Bi6 p and Bi6 s ↔ Bi6 p electron transitions and the impurity luminescence is due to the f – f transitions in Ho^3+ and the O2 p → Ho^3+ charge transfer.
A PL and PLE study of high Cu content Cu-=SUB=-2-=/SUB=-ZnSnSe-=SUB=-4-=/SUB=- films on Mo/glass and solar cells -=SUP=-*-=/SUP=-
Authors: Sulimov Mikhail A. , Yakushev Mikhail V. , Forbes Ian , Prieto Jose M. , Mudryi Alexander V. , Krustok Juri , Edwards Paul R. , Martin Robert W. 
Published: April 2019

AbstractCu_2ZnSnSe_4 (CZTSe) is amongst leading candidates for the absorber layer in sustainable solar cells. We examine CZTSe thin films with [Cu]/[Zn + Sn] of 0.99 and [Zn]/[Sn] of 1.07, deposited on Mo/glass substrates, and solar cells fabricated from these films. The bandgap ( E _ g ) of the as deposited films and solar cells was examined by photoluminescence excitation (PLE) whereas the temperature and excitation intensity dependence of photoluminescence (PL) spectra was used to examine the nature of radiative recombination. The 6 K PL spectra of CZTSe/Mo exhibit an intense broad and asymmetrical band P1 at 0.822 eV and a lower intensity band P2 at 0.93 eV. The shape of this band, high rates of blue shift with excitation intensity rise ( j -shift) j (P1) = 14 meV and j (P2) = 8 meV per decade, and red shifts of both bands with increasing temperature suggest that both bands are associated with valence band tails due to potential fluctuations caused by high populations of charged defects. The mean depth of such fluctuation γ of 24 meV was estimated from the low energy side of P1. Device processing increased E _ g , blue shifted P1, decreased its width, j -shift and the mean depth of potential fluctuations. These can be due to the annealing and/or can partly be related to KCN etching and the chemical effect of Cd, from CdS replacing copper at the CdS–CZTSe interface layer. Processing induced a new broad band P3 at 1.3 eV (quenching with E _ a = 200 meV). We attributed P3 to defects in the CdS layer.
Высокоселективный полосно-пропускающий фильтр на резонаторах с двухсторонним рисунком полосковых проводников на подвешенной подложке
Authors: Беляев Б.А. , Сержантов А.М. , Бальва Я.Ф. , Лексиков Ан.А. , Грушевский Е.О. 
Published: April 2019

AbstractNew resonator design employing a hairpin stripline conductor with a stub situated on one side of a dielectric substrate and regular stripline conductors (connected to a screen) on the other side. Eigenfrequencies of the first three oscillation modes of this resonator can be made closer to each other, so that the resonances of two modes are involved in the formation of the passband while the third mode resonance forms a minimum of the transmission coefficient adjacent to the passband. A structure comprising four resonators of this type has the characteristic of an eighth-order bandpass filter arranged in a case with 45 × 16 × 6.25-mm internal dimensions possessing f _0 = 0.52 GHz central frequency with a 14% relative bandwidth. The filter is highly selective due to the attenuation poles being close to the pass band and a wide high-frequency stopband extending above a fivefold f _0 value at a level of –100 dB.
How Prefrail Older People Living Alone Perceive Information and Communications Technology and What They Would Ask a Robot for: Qualitative Study
Authors: Daniele Katia , Marcucci Maura , Cattaneo Cesarina , Borghese Nunzio Alberto , Zannini Lucia 
Published: April 2019

BackgroundIn the last decade, the family system has changed significantly. Although in the past, older people used to live with their children, nowadays, they cannot always depend on assistance of their relatives. Many older people wish to remain as independent as possible while remaining in their homes, even when living alone. To do so, there are many tasks that they must perform to maintain their independence in everyday life, and above all, their well-being. Information and communications technology (ICT), particularly robotics and domotics, could play a pivotal role in aging, especially in contemporary society, where relatives are not always able to accurately and constantly assist the older person.ObjectiveThe aim of this study was to understand the needs, preferences, and views on ICT of some prefrail older people who live alone. In particular, we wanted to explore their attitude toward a hypothetical caregiver robot and the functions they would ask for.MethodsWe designed a qualitative study based on an interpretative phenomenological approach. A total of 50 potential participants were purposively recruited in a big town in Northern Italy and were administered the Fried scale (to assess the participants’ frailty) and the Mini-Mental State Examination (to evaluate the older person’s capacity to comprehend the interview questions). In total, 25 prefrail older people who lived alone participated in an individual semistructured interview, lasting approximately 45 min each. Overall, 3 researchers independently analyzed the interviews transcripts, identifying meaning units, which were later grouped in clustering of themes, and finally in emergent themes. Constant triangulation among researchers and their reflective attitude assured trustiness.ResultsFrom this study, it emerged that a number of interviewees who were currently using ICT (ie, smartphones) did not own a computer in the past, or did not receive higher education, or were not all young older people (aged 65-74 years). Furthermore, we found that among the older people who described their relationship with ICT as negative, many used it in everyday life. Referring to robotics, the interviewees appeared quite open-minded. In particular, robots were considered suitable for housekeeping, for monitoring older people’s health and accidental falls, and for entertainment.ConclusionsOlder people’s use and attitudes toward ICT does not always seem to be related to previous experiences with technological devices, higher education, or lower age. Furthermore, many participants in this study were able to use ICT, even if they did not always acknowledge it. Moreover, many interviewees appeared to be open-minded toward technological devices, even toward robots. Therefore, proposing new advanced technology to a group of prefrail people, who are self-sufficient and can live alone at home, seems to be feasible.
A APRENDIZAGEM NO CONTEXTO DAS TECNOLOGIAS: UMA REFLEXÃO PARA OS DIAS ATUAIS
Authors: Scheller Morgana , Viali Lori , Alexandre Lahm Regis 
Published: April 2019

Este artigo apresenta uma análise reflexiva de três teorias que podem ser utilizadas no contexto de ensino e de aprendizagem na era digital. Para tanto, de posse das concepções de aprendizagem de David Ausubel, Seymour Papert e George Siemens, traçou-se um paralelo entre as teorias na busca de semelhanças e diferenças entre elas, explicitando uma reflexão para a aprendizagem no contexto educacional na era digital. A análise permitiu verificar que em uma reflexão conjunta, a aprendizagem deve ocorrer formal e informalmente por meio de conexões estabelecidas nas redes em que o estudante motivado, constantemente estabelece relações com o que é potencialmente significativo. Trata-se de um processo contínuo, frequentemente atualizado, ocorrendo em um contexto de interação e de forma colaborativa, sendo o sujeito ativo em sua aprendizagem.
A SUB-REPRESENTAÇÃO DO FUTEBOL PRATICADO POR MULHERES NO JORNALISMO ESPORTIVO DE PORTUGAL: UM ESTUDO SOBRE A ALGARVE WOMEN’S FOOTBALL CUP
Authors: Goellner Silvana Vilodre , Silva Paula , Botelho-Gomes Paula 
Published: April 2019

Fundamentada nos Estudos Culturais e de Gênero esta pesquisa analisa a cobertura que o jornal esportivo português A Bola empreendeu sobre a 19ª edição da Algarve Women´s Football Cup. Como fontes foram consideradas todas as edições de A Bola on-line publicadas durante a competição assim como reportagens veiculadas nos jornais Recorde, O Jogo e O Norte Desportivo. A análise do material empírico evidencia que a sub-representação do futebol praticado por mulheres acontece pelo ínfimo número de reportagens publicadas, pela valorização de uma representação tradicional de feminilidade e pela pouca visibilidade conferida à modalidade e suas atletas
LA VOZ DEL ALUMNADO Una investigación narrativa acerca de lo que siente, piensa, dice y hace el alumnado de Magisterio de Educación Física en su formación inicial.
Authors: Medina Berenice Mattos , Megías Esther Prados , Arcos Daniela Padua 
Published: April 2019

Esta investigação descreve e a interpreta o que sente, pensa, diz e faz o aluno (a) de magistério especialidade educação física em sua formação inicial. Foram utilizados diferentes instrumentos de coleta de informações: observação participante, grupos de discussão, entrevistas individuais, entrevistas em profundidade e documentos dos alunos. Proponho que se continue investigando com a possibilidade de viver a complexidade, a incerteza e a tensão da vida real em contextos educativos e que se amplie a reflexão da formação inicial.
A EDUCAÇÃO FÍSICA NA ESCOLA DO VESTIBULAR: AS POSSÍVEIS IMPLICAÇÕES DO ENEM
Authors: Beltrão José Arlen 
Published: April 2019

Vivemos um momento em que o “velho vestibular” está sendo substituído progressivamente pelo “novo ENEM” como instrumento de seleção dos candidatos ao ensino superior. Pretendemos nesse ensaio, a partir de análise dos documentos que normatizam o ENEM e da produção teórica, refletir sobre as influências exercidas pelo ENEM na educação escolar, analisando seus significados e possíveis implicações para Educação Física, visto que o exame incorporou na sua matriz de referência os conteúdos da Educação Física. A experiência vivida pelos demais componentes escolares nos mostra que a prática pedagógica do professor de Educação Física pode passar a ser determinada/influenciada pelo ENEM.
Da Repulsa ao Gosto da Mina: uma análise sobre a construção do heroísmo dos trabalhadores
Authors: Cioccari Marta Regina 
Published: April 2019

A partir de estudo etnográfico, documental e bibliográfico, analiso neste artigo os modos pelos quais se constituiu uma imagem de heroísmo dos trabalhadores nas minas de carvão, calcada na dimensão trágica da profissão. Esta “grande honra”, visível ainda entre operários franceses, alimentada pela literatura a partir das obras de Victor Hugo (1866) e Émile Zola (1881), entre outras, ganhou corpo com as campanhas estatais, como no caso da França, visando tornar o mineiro “o primeiro operário” do país. Esta análise integra pesquisa mais ampla sobre as formas contemporâneas da honra de trabalhadores no contexto brasileiro e francês – a partir de experiências etnográficas em Minas do Leão (RS) e em Creutzwald, na Lorena - que serviu de base à minha tese de doutorado (Cioccari, 2010b). Na última década, o fechamento da mina francesa La Houve, a última em operação no país, imprimiu na categoria uma espécie de “heroicidade ferida”, um sentimento de desonra da sua condição de trabalhadores. Palavras chave: Mineiros de carvão. Heroísmo. Honra. Trabalhadores. From Repulsion at Taste of Mine: a review on the construction of heroism of the workers Abstract From ethnographic study, documentary and literature, I analyze in this article how to set up an image of heroism of the workers in coal mines anchored in tragic dimension of the profession. This "great honor", visible even among French workers, fueled by literature from the works of Victor Hugo (1866) and Emile Zola (1881), among others, gained body with the state campaigns, as in the case of France in order to make the miner "the first worker" in the country. This analysis is part of the more extensive research on contemporary forms of honor workers in the Brazilian and French - from ethnographic experiences in Minas do Leão (RS) and Creutzwald in Lorraine - which formed the basis of my doctoral dissertation (Cioccari, 2010b). In the last decade, the closure of the mine La Houve, in France, the last in operation in the country, brought in the category a kind of "heroic wound", a sense of dishonor of their status as workers. Keywords: Coal miners. Heroism. Honor. Workers.
O Pontal do Estaleiro: estudo etnográfico da memória do trabalho na cidade de Porto Alegre, RS
Authors: Soares Ana Paula Marcante 
Published: April 2019

A partir da experiência etnográfica no contexto urbano da cidade de Porto Alegre, RS, propõe-se refletir a dinâmica espaço-temporal da memória do trabalho apoiando-se em narrativas biográficas de ex-trabalhadores de um antigo Estaleiro. Com base no estudo das redes de trabalho vinculadas à territorialidade da região da Orla do rio Guaíba, próximo ao Cristal, em Porto Alegre, RS, propõe-se investigar a rítmica e ressonâncias do fluxo das transformações urbanas nas suas relações com práticas de trabalho operário. Trata-se de pensar as continuidades e descontinuidades do tempo vivido de uma experiência de trabalho tida como singular sob o contexto de conformação e transformação dessa região da cidade. Pretende-se refletir sobre as transformações urbanas propostas recentemente para o Pontal pelo viés de trajetórias de trabalho e das dimensões simbólicas e materiais que esse território evoca. As reflexões aqui propostas perpassam as tensões representadas pelo fenômeno de crise experienciada pela comunidade de trabalho do Estaleiro com o encerramento das suas atividades e a recente destruição de suas ruínas. Palavras chave: Trabalho Operário. Memória. Cidade. Pontal do Estaleiro (Shipyard Point): an ethnographic study of the memories of employment work in the city of Porto Alegre, RS Abstract The study aims at reflecting the spatial temporal dynamics of the memories on work based on the ethnographic experience in the urban context of Porto Alegre – RS according to the biographic narratives of former workers employed at an extinct shipyard. Based on the work networks linked to the area of the Guaiba River waterfront, in the Cristal suburb of Porto Alegre, RS, the proposal is to investigate the rhythm and resonance of the flow of urban transformation in its relationship with work practices. It is a matter of thinking of the continuities and discontinuities of time seen through a work experience which was considered singular in the context of the conformation and transformation of this part of town. The idea is to reflect on the urban transformations that have been recently proposed for the Pontal, through work trajectories and the symbolic and material dimensions evoked by this area. The reflections proposed herein go beyond the tensions represented by the phenomenon of the crisis the Shipyard’s labor community was subjected to at the time it was closed down, and the recent razing of its ruins. Keywords: Work Labor. Memory. City.
Recordações ao Mar: a memória das embarcadas sobre o trabalho em plataformas de petróleo
Authors: Daniel Camila 
Published: April 2019

Ao contrário do que se possa imaginar, as mulheres sempre estiveram presentes no mundo do trabalho brasileiro. No ramo petrolífero, elas também marcaram presença desde as primeiras descobertas de petróleo em solo brasileiro. As mulheres trabalhando em plataformas de petróleo desafiam as noções tradicionais que encaram o espaço da plataforma como essencialmente masculino. O presente trabalho tem como objetivo discutir a presença de mulheres em plataformas de petróleo, tendo como referência a experiência de gênero que estas mulheres vivem em seu trabalho. O caso das embarcadas, as mulheres que trabalham em plataformas de petróleo, nos mostra que o gênero funciona como um classificador fundamental das relações entre os trabalhadores e trabalhadoras embarcadas, por isso ele não pode ser preterido nas análises sobre este sistema de trabalho e sobre a inserção de mulheres em espaços de trabalho masculinos. Palavras chave: Gênero. Trabalho. Plataforma de petróleo. Remembrance on the Sea: the offshore women memory about labor on oil rigs Abstract Unlike to what one can imagine, women have always been present in brazilian labor world. In the petroliferous branch, they have also been present since the first oil discoveries in Brazilian soil. Women working on oil rigs challenge traditional notions that face the rig as an essentially male space. This paper aims to discuss the presence of women on oil rigs, having as reference the gender experience that these women live in their work. The case of the offshore women, women who work on oil rigs, shows that gender works as a fundamental classifier of the relations between man and woman offshore workers. Therefore it can not be passed over in the analysis of this work system and on the inclusion of women in male workplaces. An ethnographic approach to the professionalizing education. Keywords: Gender. Labour. Oil Rigs.
Calles de la memoria: filmando los procesos performativos de la memorialización
Authors: Guarini Carmen 
Published: April 2019

Es sabido que la memoria es una construcción del pasado desde un presente. Sin presente no hay memoria posible. Partiendo desde esta línea conceptual mi trabajo se ha sustentado desde sus inicios en el principio de observar y filmar en qué elementos del presente se instala la memoria, en pos de construir imágenes que den cuenta del modo en que el pasado circula en nuestro presente y lo resignifica. En mi último film Calles de la Memoria exploro desde un doble proceso performativo un reciente proceso de memorialización: las “baldosas x la memoria” en la ciudad de Buenos Aires a cargo de grupos de emprendedores de Memoria. Palabras clave: Memoria. Baldosas. Desaparecidos. Memorialización. Performa. Streets of Memory: filming performative processes of memorialization Abstract It is known that memory is a construct of the past from a present. Without this there is no memory possible. Starting from this conceptual line my work has been based in the principle of observing and filming in which elements of this memory is installed, after constructing images that account for the way in which circulates in the past and our present new meaning. In my last film Streets of Memory I explore a recent performative memorialization process: the "memory’s flagstones" in the city of Buenos Aires made by groups of entrepreneurs Memory. Keywords: Memory. Flagstones. Desaparecidos. Memorialization. Performa.
Uma experiência etnofotográfica num presídio feminino
Authors: Oliveira Micheline Ramos de 
Published: April 2019

Esse artigo tem como objetivo contribuir com o debate em torno da perscrutação das feições fabulatórias dos jogos de memória no ato de etno-fotografar. Emerge aí o confronto entre o tempo subjetivo da antropóloga, mulher letrada, oriunda de camadas médias, intelectualizada, e o tempo subjetivo das mulheres foco deste estudo, mulheres de camadas populares, semi-alfabetizadas, pobres e encarceradas. Problematizar o sentido daquilo que é narrado pelo etnógrafo como “dado etnográfico” e o caráter interpretativo que está por trás das situações sociais e culturais de violências urbanas, eis o exercício proposto aqui por meio da discussão de uma experiência do uso dos recursos de uma máquina fotográfica em campo, onde o processo de confecção de imagens revela aspectos sobre a própria etnografia (etnofotografia). Palavras chave: Etnofotografia. Presídio feminino. Memória. Ethno Photographic Experience in Women´s Prision Abstract This article aims to contribute to the discussion surround the scanning of the fable features of memory games in the ethno photographing act. There emerges the confrontation between the subjective time of the anthropologist, a literate and intellectual woman, coming from middle class, and the subjetive time of the women who are focus of this stude, semi-illiterate, poor and imprisioned women, originated from lower classes. Problematize the meaning of what is narrated by the ethnographer as ethnographic data and the interpretative character that lies behind the social and cultural situations of urban violence, that is the exercise proposed here by discussing the experience of using the camera resources in field, where the process of elaborating images reveals aspects about the own ethnography (ethno photographic). Keywords: Ethno Photographic. Women´s Prision. Memory.