bluuebunny/crossref_metadata_2025 huggingface dataset:
”Vi mødtes to gange.” Narrative møder med børn i et pædagogisk miljø
Authors: Jørgensen Hanne Hede
Published: October 2018

Denne artikel tager afsæt i forskerfortællinger om, hvordan børn i mødet med en fremmed forsker tager initiativ til at udforske relationen mellem os. Gennem en narrativ analyse undersøges hvad det er for fortællinger vi, børn og forsker, sammen skaber, når vi mødes. Med udgangspunkt i forskerfortællingerne undersøges hvordan børnehavens pædagogiske miljø kan forstås som kontekst for disse fortællinger. Analysen peger på, at vi ved at betragte hverdagslivet i daginstitutionen som et netværk af levede fortællinger, kan forstå samspillet mellem børn og pædagoger som et spørgsmål om ”plotmageri”, hvor børn er aktører på lige fod med voksne. Artiklen lægger op til en drøftelse af, hvordan børns status som plotmagere kan indgå som et børneperspektiv i såvel pædagogik som forskning.
English abstract
”We have met twice.” Narrative meetings with children in a pedagogical environment
This article builds on research stories about how children when meeting me as a stranger take initiative to explore the relation between us. With a narrative analysis, the article explores what kind of stories children and adults create when they meet. Based on the research stories, the environment of the day-care institution is explored as the context of stories. The analysis points out that by regarding the day-care life as a network of lived stories, we can understand interactions between children and pedagogues as a question of ”plotmaking” which makes the child an actor equal to the adult. The article discusses how children’s plotmaking and actor status in a pedagogical environment can reflect at child perspective in both pedagogy and research.
”Men dom flesta har en liknande situation.” Ett narrativ om bristande personella resurser och omgivningens begränsade förväntngar
Authors: Haglund Björn
Published: October 2018

Artikeln har en narrativ form och baseras på empiri från en etnografiinspirerad studie på ett svenskt fritidshem och fokuserar på hur Ann, den lärare som ansvarar för fritidshemmets verksamhet, försöker att bygga upp och driva verksamheten. Hon, liksom de statliga styrdokument hon försöker att utgå ifrån, har höga ambitioner med verksamheten men de förutsättningar skolan erbjuder för att bedriva kvalitativt hög verksamhet är bristfälliga. Hög personalomsättning i kombination med personal utan utbildning och brister i planeringstiden blir hinder både för Anns ambitionsnivå och fritidshemmets möjligheter att fungera som en plats för utbildning och lärande och på så vis motsvara styrdokumentens skrivningar.
English abstract
”But most of us have a similar situation.” A narrative about lacking staff resources and limited expectations
The article has a narrative design and is based on empirical data from an ethnography inspired study at a Swedish leisure-time centre. The study is focused on how Ann, the teacher that is responsible for the activities at the leisure-time centre, tries to structure and run the everyday practice. She, just as the governmental steering documents from where she takes her point of departure, has high ambitions with the activity. The conditions for managing high qualitative activities offered by the school are, however, inadequate. High staff turnover in combination with staff without relevant training and insufficient opportunities for planning the work becomes obstacles for both Ann’s ambitions and the leisure-time centre’s opportunities to function as a place for education and learning and in that way meet the content of the steering documents.
Enhancing learning practices by understanding formal and informal ways of using computer games
Authors: Øygardslia Kristine
Published: October 2018

A 12-year-old boy – call him Lucas – is in the middle of a boss fight. This is a challenging test, in which he must beat an enemy harder than any he has encountered before. Through hours and hours of play, he has prepared for this moment. Now, he must combine and apply all of his skills to perform at his very best. If you were to try to speak to him, he would probably be so immersed in the game world that he would not even notice you. Tomorrow at school, however, he will tell his friends how he beat the boss and advanced in the game. He will be considered one of the experts within his peer group. He and his friends will then spend their breaks discussing strategies for the game, perhaps looking up YouTube videos of their favorite Internet celebrities playing the game. If it is anything like I was at that age, he will probably be thinking more on that day about the game than about the lesson his teacher has prepared about European Explorers. His teacher – call her Sally – notices this. She also knows that Lucas is not a special case; after all, most kids of his age in Norway regularly play digital games (Medietilsynet 2018). Sally would like to know if it is possible to design learning activities for her students in a way that connects the learning to what matters to them, making the topics they cover in class seem more relevant. At the same time, she wonders what it is about these computer games that enables an 11-year-old to remember hundreds of Pokémon, as well as details about how they evolve, their strengths, and where to find them (Gee 2005), while they struggle to put letters together correctly or to remember where to place Italy on a map. Perhaps, she thinks, games involve some learning principles that could be utilized when designing her lessons?
The Impact of Restrictive Measures on the Price Discovery Function of Stock Index Futures – Evidence From CSI 500 Stock Index Futures
Authors: Wu Maoguo , Zhu Zhehao
Published: October 2018

Restrictive measures implemented by governments have a great impact on the price discovery function of stock index futures. This study compares the price discovery function of CSI 500 stock index futures and CSI 500 stock index before and after the implementation of restrictive measures based on the reaction speed to new information, the price ratio of new information and the price contribution of both future market and spot market. It also analyzes the difference between the price discovery function of the future market and that of the spot market and thus proposes policy implications accordingly.Utilizing data of CSI 500 stock index futures in the period of the stock market crash, this study compares the price discovery function before and after the implementation of restrictive measures. By means of the VECM model and common factor analysis, it further investigates the difference in the price contribution of the two markets. Contributing to existing literature on the relationship between the future market and the spot market, this study explores the change in the price contribution of the two markets and therein studies the impact of restrictive measures on the price discovery function. Empirical evidence finds that before the implementation of restrictive measures, the price discovery function worked more efficiently, while, however, after the implementation of restrictive measures, the price discovery function did not work. Hence, stock index futures do assist in the price discovery of the spot market. In some special time periods, however, due to the impact of restrictive policies, the price contribution of the spot market exceeded that of the future market, implying that the price discovery function of the CSI 500 stock index future market is unstable.
Fintech and the Future of the Payment Landscape: The Mobile Wallet Ecosystem - A Challenge for Retail Banks?
Authors: Omarini Anna Eugenia
Published: October 2018

Technological innovation, recent regulatory initiatives and mass consumers’ changing expectations are quickly re-shaping the payments’ sector, paving the way to a more open environment where even non-banking players see a huge opportunity to gain momentum and disrupt the incumbents, namely the financial institutions. Fintech startups, high-tech firms but also mobile network operators are indeed challenging the status quo with their innovative propositions, trying to disintermediate banks from their traditional function of payment service providers. In the payments market, mobile wallets represent one of the innovations with highest potential of growth in the consumer-to-business segment. Payment market is a large and profitable segment for retail banking. Besides revenue streams from card payment transactions, new sources of revenueas and value creation have been unleashed by digital payments. This paper contributes to provide a better understanding of the mobile wallet ecosystem, also analyzing a set of four business cases so to identify potential sources of competitive advantage for retail banks in a market characterized by an increased non-bank competition. Mobile wallet platforms can be a powerful tool for banks to cope with the customer-centric approach. The structure of the paper analyse the recent trends in the financial services industry, involving the entry of new players (Fintech); the evolution of payments in the market; the concept of ecosystem applied to the new payment landscape; and it outlines the banks’ roles in the new mobile payment environment.
Determination of the Perceptions of Sport Manager Candidates Related on the Concept of Manager: A Metaphor Analysis Study
Authors: Kurtipek Serkan , Gungor Nuri Berk
Published: October 2018

The aim of present study was to determine the perceptions of the candidates of the sport manager on the concept of manager through metaphors. The sample of study consists of a total of 50 sports managers. In order to collect data in the research, a "metaphor form" was prepared to determine the perceptions of sport manager candidates on the concept of manager. In the form of metaphors, the sport manager candidates were asked to complete the sentence   "Manager is like ...; because…". In the research, phenomenological design from qualitative research approaches was used. In the analysis of the data, content analysis technique was used. For the reliability of the analysis of the research data, the inter-participants reliability co-efficient was calculated and found to be 91%. By evaluating the data, it was observed that the sport manager candidates produced totally 33 metaphors. All metaphors were collected in 7 different categories. It was determined that the perceptions of the sport manager candidates on the concept of manager mostly “in terms of being indispensable for organizations” category (14 metaphors), “in terms of being authoritarian” category (10 metaphors) and “in terms of being leader” category (8 metaphors). These categories were followed by the categories of “in terms of being a problem solver”, “in terms of unifying”, “in terms of being guide” and “in terms of being fighter”. The most produced metaphors by the sport manager candidates were the Brain, the Leader, the Father, and the Queen Bee. Alive, lifeless, abstract and concrete metaphors were used for the concept of manager.
Discussion on Flipped Classroom Teaching Mode in College English Teaching
Authors: Du Yanxia
Published: October 2018

Flipped classroom is now one of the most highly valued models in universities. From domestic and foreign research, flipped classroom can provide language input for students’ autonomous learning via modern information technology, which creates more opportunities for classroom output activities and eventually can effectively improve the teaching effect of College English. This paper analyzes the concept of flipped classroom, summarizes the advantages and disadvantages of flipped classroom teaching model in College English teaching from the existing problems in English teaching, and focuses on the innovative exploration of flipped classroom for college English teaching ideas based on the characteristics and theoretical basis of flipped classroom teaching model. This paper is expected to provide implications for the implementation of the flipped classroom teaching model in College English teaching in China, so as to promote the reform of College English teaching, perfect the flipped classroom teaching model to adapt to the form of College English teaching in China, and lay the foundation for implementation of flipped classroom on a large scale.
Assessing the Quality of the Saudi Healthcare Referral System: Potential Improvements Implemented by Other Systems
Authors: Al Shamsi Hilal Salim , Almutairi Abdullah Ghthaith , Al Mashrafi Sulaiman Salim
Published: October 2018

INTRODUCTION: The referral system authorizes and transfers the responsibility for healthcare services from one provider to another. A key component of the system is the communication between primary-care and specialist providers. Poor communication between them is detrimental to and can cause significant issues with coordination of effective care.

OBJECTIVE: The purpose of this review was to evaluate current healthcare referral systems, focusing on the communication among providers, and to suggest practices that could make the Saudi healthcare referral system more effective.

DESIGN: This systematic review identified published studies of the quality of the healthcare referral system in Saudi Arabia and other countries using two databases, Medline and PubMed. Data were summarized and extracted into two tables.

RESULTS: The review included 12 studies that met its selection criteria. These studies were conducted in various regions of Saudi Arabia, but mostly the west and north. The 12 studies included 181,192 participants, with numbers of participants ranging from 21 to 138,484. The present review found that more than 50% of the referral documents and feedback reports in these studies had incomplete patient information. Implementation of electronic referrals (e-referrals) in several countries, including Australia, New Zealand and the United States, improved their referral systems, particularly by solving the problem of incomplete referral documents. In addition, the present review found that in some specialist clinics, referral cases contributed to increased workloads. One study reported on implementation of Lean Six Sigma principles in a military hospital in western Saudi Arabia, which reduced the number of referrals delayed, inappropriate referrals and the response time to referrals (7%). E-referrals and Lean Six Sigma principles may be applicable in Saudi Arabia as solutions to referral and response-time problems.

CONCLUSIONS: An increase in healthcare referrals in Saudi Arabia has caused an increase in missing essential information in referral letters and feedback reports as well as overcrowding in specialist clinics. The results of the present review suggested that implementing e-referral and Lean Six Sigma principles may improve the quality of Saudi Arabia’s healthcare referral system.
Legacy of the Olympic Games in the opinion of students of the International Olympic Academy
Authors: Malchrowicz-Mośko Ewa , Korzeniewska-Nowakowska Paulina
Published: October 2018

The modern Olympic Games are a highly interdisciplinary phenomenon. The current literature abounds with examples
of eff ects of this socio-cultural event: long-term, short-term, direct, indirect, expected, unexpected, desirable,
and undesirable. Olympic Games result in, among others, economical, ecological, social, cultural, psychological,
institutional, political, and logistical eff ects. Top-class sporting events are also infl uential in terms of the development
of tourism. The aim of this article is to demonstrate the concept of Olympic legacy in the past years and to
show potential results of hosting Olympic Games in a particular country in the opinion of students of the International Olympic Academy.
The Effectiveness of Exercise Interventions on Coping with Stress: Research Synthesis
Authors: Sharon-David Hilla , Tenenbaum Gershon
Published: October 2018

Stress‐related health issues are associated with mental and physical health decrements, and poor well-being. One intervention that may be useful for stress reduction is exercise. However, the research on exercise-interventions to reduce stress among non-clinical population is scarce. The purpose of the present paper was to systematically review the empirical work on the effectiveness of exercise as a treatment strategy for coping with stress. First, stress definitions and a stress-coping model are presented. Then, findings regarding the influence of exercise-interventions on stress among healthy populations are summarized. In the second half, the psycho-physiological mechanisms which underline the association between exercise and stress are reviewed. Finally, limitations, implications, and overall conclusion are presented. Altogether, the findings suggest that exercise-interventions may be effective in coping with everyday stress among non-clinical population. However, the role of the psycho-physiological mechanisms in the exercise-stress link and their interactions are yet to be established.
Sports press coverage of Polish female athletes during the Olympic Games in Rio de Janeiro
Authors: Organista Natalia , Mazur Zuzanna
Published: October 2018

During the last Olympic Games in Rio de Janeiro, the Polish female representatives won sig-nificantly more medals compared to men. This fact made the authors examine whether female athletes received proportionate media coverage compared to men. In the course ofresearch, articles from the two largest Polish dailies were analysed (“Gazeta Wyborcza” and “Fakt Gazeta Codzienna”). With the use of content analysis, 197 articles were analysed in order to check whether any quantitative and qualitative differences can be observed in describing women's and men's sport. The results show underrepresentation of press coverage regarding women's sport. The results of qualitative analysis also point to a number of differences when portraying women's and men's sport.
Trema micrantha (L.) Blume. IN PLANTATIONS FOR ECOLOGICAL RESTORATION: EARLY DEVELOPMENT IN THE BRAZILIAN SUBTROPICAL FOREST
Authors: Stolarski Oiliam Carlos , Gorenstein Mauricio Romero , Lubke Marcos , Lubke Lucas , O’Connor Paula Helena Pereira , Bechara Fernando Campanhã
Published: October 2018

The understanding of silviculture of native species in a determined region is fundamental for the selection of more appropriate species for using in ecological restoration. Trema micrantha (Cannabaceae), a pioneer species which is widely distributed, shading and attractive to birds, is intensively planted in restoration projects of the southeastern Brazilian Atlantic Forest. In order to get information regarding to the performance of this species in subtropical forests (subject to the yearly frosts), we analyzed its early growth in a planting carried out with 70 native tree species in 3 x 2 m spacing in four plots of 40 x 54 m. Semianually, we collected data of 72 individuals of Trema micrantha. These data were statistically analyzed using the Statistical Software Assistat-beta submitted to Tukey test (p<0.05) and graphically described by R. Trema micrantha showed excellent performance at 3.5 years of age in root collar diameter (12.01 ± 5.24 cm), total height (5.95 ± 1.44 m), crown projection area (22.56 ± 11.26 m²) and crown volume (61.34 ± 37.46 m³), enduring severe frosts with a yearly survival rate of 78%. Based on the results obtained, and considering that this species has broad natural distribution, we recommend its extensive use also in forestry restoration projects in the subtropical regions of Brazil.
FRAGMENTAÇÃO DA PAISAGEM NO MUNICÍPIO DE BRAGANÇA PAULISTA-SP
Authors: Teixeira Lucimara , Azevedo Fernanda Dall’Ara , Dalmas Fabrício Bau , Saad Antonio Roberto , Paranhos Filho Antonio Conceição , Andrade Marcio Roberto Magalhães de
Published: October 2018

A fragmentação e a destruição de habitat são atualmente as maiores causas da redução da biodiversidade. Uma das estratégias de conservação de habitat é a criação de corredores ecológicos que são áreas de conectividade entre fragmentos isolados. Este estudo foi realizado no município de Bragança Paulista, inserido no domínio da Mata Atlântica, região de abrangência do Corredor Mantiqueira na Área de Proteção Ambiental (APA) Piracicaba-Juqueri-Mirim. Os objetivos deste trabalho foram: i - avaliar o isolamento dos remanescentes florestais nativos com base nos parâmetros de paisagem definidos como tamanho, forma, área interior e conectividade; e, ii - identificar áreas potenciais para formação de corredores ecológicos na região de estudo. A metodologia aplicada foi baseada em técnicas de geoprocessamento, em um Sistema de Informações Geográficas e a base de dados utilizada foi composta pelo Inventário Florestal do Estado de São Paulo do Instituto Florestal; cartas topográficas do IBGE, em escala 1:50.000, associada a um plano de informação constituído pelos limites municipais do Instituto Geográfico e Cartográfico do Estado de São Paulo, toda a base em formato vetorial. Os resultados indicaram que a grande maioria dos fragmentos é pequeno, com forma alongada, com baixo índice de área interior e baixa conectividade, o que torna a paisagem de Bragança Paulista e seu entorno bastante fragmentados. Entretanto, vale destacar que esta região ainda contém importantes remanescentes florestais, tanto quando se considera a área de alguns fragmentos, como a conectividade entre eles. Os corredores ecológicos identificados na área de estudo, denominados Corredor Jaguari e Corredor Baronesa-Iguatemi, incluem 74% de toda a cobertura florestal estudada e, se implantados em Bragança Paulista, poderão contribuir para a formação de um cinturão verde no município com a função de proteção dos recursos hídricos do rio Jaguari e para a manutenção da biodiversidade local e regional.
CARACTERIZAÇÃO MORFOMÉTRICA, GERMINAÇÃO E CONSERVAÇÃO DE SEMENTES DE Triplaris brasiliana CHAM. (POLYGONACEAE)
Authors: Araújo Neto João Correia de , Teixeira Jonhclécio Duarte , Neve Maria Inajal Rodrigues da Silva das , Melo Luan Danilo Ferreira de Andrade , Ferreira Vilma Marques
Published: October 2018

O objetivo deste trabalho foi caracterizar a morfometria de sementes, padronizar o teste de germinação e identificar a condição ideal de armazenamento das sementes de Triplaris brasiliana Cham., uma espécie pioneira, com grande potencial para recuperação de áreas degradadas, de preservação permanente, áreas de mata ciliar e terra firme. Para a caracterização morfométrica, determinou-se o comprimento e espessura, massa de 1000 sementes, coloração, formato e localização do hilo e da micrópila, tipo de embrião, sua localização e tipo de germinação. O teste de germinação foi avaliado a partir das sementes com e sem escarificação em diferentes temperaturas. O armazenamento foi testado em embalagens de vidro e papel e em condições de geladeira, câmara seca e ambiente. O embrião é axial, sendo o eixo embrionário localizado na parte central da metade inferior da semente, a germinação é do tipo epígea e as plântulas são fanerocotiledonares. A semeadura das sementes escarificadas sobre papel submetida à temperatura de 30°C foi favorável para germinação e desenvolvimento das plântulas de Triplaris brasiliana, sendo as sementes sensíveis à desidratação (intermediária), preservando sua qualidade fisiológica por mais tempo, quando armazenadas em geladeira e câmara seca, nas embalagens utilizadas.
INFLUÊNCIA DA FORMA E POSIÇÃO DA ENCOSTA NAS CARACTERÍSTICAS DO SOLO E NA REGENERAÇÃO NATURAL EM ÁREAS DE PASTAGEM ABANDONADAS
Authors: Silva Alessandro de Paula , Resende Alexander Silva de , Chaer Guilherme Montandon , Gonçalves Fernando Lima Aires , Campello Francia Carneiro
Published: October 2018

O objetivo desse trabalho foi avaliar a influência do relevo nas características químicas e físico-hídricas do solo e na regeneração natural, em áreas de pastagens abandonadas. Para o estudo foram consideradas oito áreas de relevo movimentado no município de Itaboraí-RJ, em cada uma das áreas foram selecionadas duas topossequências divididas em terços superior, médio e inferior, contemplando as pedoformas côncavas e convexas. Foram instaladas duas parcelas (20 m x10 m) em cada terço, uma para cada pedoforma, nas quais se avaliaram os atributos físico-hídricos e químicos do solo, a regeneração natural e a biomassa aérea da pastagem (biomassa estocada e taxa de rebrota). O terço superior apresentou os menores teores de argila e as características químicas não foram influenciadas pela posição na encosta. Na pedoforma côncava, nas áreas de textura argilosa, obtiveram-se menores valores de soma de bases trocáveis e de carbono, quando comparada à pedoforma convexa, de mesma classe textural. Essa tendência se repetiu, porém, de forma não significativa, nas áreas com textura média. As características físico-hídricas estiveram mais associadas à granulometria do solo que à posição na paisagem. A regeneração natural apresentou poucas espécies e não foram observadas diferenças tanto para a posição na encosta como para a pedoforma. No entanto, a espécie de Poaceae existente na pastagem de cada área foi um indicador mais sensível do potencial de desenvolvimento da regeneração natural do que as características edáficas, com destaque negativo para a paisagem dominada por Urochloa humidicola (Rendle) Morrone e Zuloaga, na qual se encontraram os menores valores de regeneração natural.
DENSITOMETRIA DE RAIOS X NA AVALIAÇÃO DA DENSIDADE EM PAINÉIS DE PARTÍCULAS
Authors: Gonçalves Fabricio Gomes , Lelis Roberto Carlos Costa , Carvalho Alexandre Monteiro de , Tomazello Filho Mário
Published: October 2018

Objetivou-se neste trabalho determinar o perfil da densidade aparente em painel aglomerado confeccionado com partículas da madeira de Acacia mangium. Utilizou-se a técnica de microdensitometria de raios X correlacionada com a densidade gravimétrica. Foram utilizados os adesivos ureia formaldeído e tanino comercial de Acacia mearnsii aplicado na forma de pó diretamente nas partículas previamente encoladas. Os painéis foram fabricados com quatro razões de compactação (1,39; 1,55; 1,73; e, 2,00) combinadas a quatro proporções de tanino em pó (0, 10, 20 e 30%), totalizando 16 tratamentos (4 painéis por tratamento). Foram determinados, analisados e comparados o perfil da densidade aparente (densidade média, densidade máxima e densidade mínima) e a densidade gravimétrica dos aglomerados produzidos. O perfil da densidade é apresentado graficamente e interpretado por análise de variância e regressão linear múltipla. Os valores de densidade aparente média, máxima e mínima observados para os painéis aglomerados obtidos pela microdensitometria de raios X variaram de 357 a 697 kg/m3, 386 a 824 kg/m3 e 334 a 634 kg/m3, respectivamente, e pelo método gravimétrico de 369 a 742 kg/m3. A técnica mostrou-se eficiente na determinação de variações nos perfis de densidade aparente ao longo da espessura dos painéis em todos os tratamentos, bem como mostrou-se eficiente na obtenção direta da densidade aparente. Estas variações poderiam ser minimizadas se o tanino utilizado fosse anteriormente hidratado em água. Houve forte correlação entre as médias das densidades obtidas pelo método do microdensitômetro de raios X e pelo método gravimétrico.
MODELAGEM DO INCREMENTO DIAMÉTRICO PARA ÁRVORES INDIVIDUAIS DE Araucaria angustifolia (BERTOL.) KUNTZE
Authors: Chassot Tatiane , Fleig Frederico Dimas
Published: October 2018

Este trabalho teve como objetivo formular modelos de incremento diâmetro para árvores individuais de Araucaria angustifolia.  Foram utilizadas medições de 262 indivíduos de araucária amostrados nas parcelas permanentes do Projeto Ecológico de Longa Duração – “Conservação e Manejo Sustentável de Ecossistemas Florestais – Bioma Araucária e suas Transições” (PELD – CNPq). Utilizando análise de correlação, covariância e regressão, foram ajustados modelos de incremento, estratificados em função da classe de diâmetro, variável de maior correlação com o incremento em diâmetro. Foi utilizado o incremento periódico anual, calculado com base no incremento em diâmetro dos indivíduos no período analisado. Os modelos resultaram em boas estimativas do incremento, no entanto, apresentaram resíduos com forte tendência.
INFLUÊNCIA DE DIFERENTES SUBSTRATOS NA PRODUÇÃO DE FITOCONSTITUINTES DE Moringa oleifera Lam. CULTIVADA A PLENO SOL
Authors: Pina José Carlos , Oliveira Ademir Kleber Morbeck de , Matias Rosemary , Silva Fernanda da
Published: October 2018

A análise de extratos de folhas de Moringa oleifera cultivadas em diferentes substratos oferece a oportunidade de se examinar um conjunto de compostos únicos, que podem ser utilizados para diversos fins, em nutrientes e na medicina. Levando-se esses fatores em consideração, foi montado um experimento em delineamento experimental, conduzido com blocos inteiramente casualizados, com sete tratamentos: (1) 100% neossolo quartzarênico; (2) neossolo quartzarênico 60% x 40% vermicomposto; (3) neossolo quartzarênico 80% x 20% vermicomposto; (4) neossolo quartzarênico 60% x 40% casca de arroz carbonizada; (5) neossolo quartzarênico 80% x 20% casca de arroz carbonizada; (6) neossolo quartzarênico 60% x 40% solo argiloso; e, (7) neossolo quartzarênico 40% x 60% solo argiloso, a pleno sol, quatro repetições por tratamento. A avaliação de crescimento da parte aérea foi realizada aos 105 dias, com a coleta das folhas, secas em estufa de ventilação forçada e posteriormente trituradas e pesadas. Com o material obtido foram preparados extratos metanólicos (20%) e aquosos (20%), submetidos à análise fitoquímica. Foi detectada a presença de compostos fenólicos, taninos, flavonoides, cumarinas, esteroides, heterosídeos cardioativos, alcaloides e açúcares redutores. Estes compostos são provavelmente os responsáveis em conferir amplo espectro de atividades biológicas atribuídas às folhas da espécie. Porém, o presente estudo sugere cautela em seu uso indiscriminado, devido à grande presença de heterosídeos cardioativos. A maior ou menor quantidade de metabólitos foi influenciada pelos diferentes substratos e, na dependência do tipo de utilização da espécie diferentes tipos de cultivos seriam necessários para aumentar ou diminuir determinados compostos presentes em suas folhas.
Uma estratégia não-tradicional para o ensino da matemática no 3º grau
Authors: Santos Angela Rocha dos
Published: October 2018

In this paper. we report a teaching experience which has been done in Mathematics Institute of Universidade Federal do Rio de Janeiro since 1983 by a group of teachers.This activity has been presented as an extra-course of Scientific Initiation and its main purpose is to develop the Scientific though and the searching vocation of the undergraduated students.In this Project, mathematical models have been used by teachers and students as a way of acquiring or improving their learning while they rediscover by themselves all the steps on the creative process that lead to scientific development.This scheme is important because it valorizes two aspects of education - the informative and the formative one-changing the focal point of the educational process from the teacher to the students.
Neolignanas de uma Embuia do Rio Grande do Sul, Brasil
Authors: Frick Neto Francisco , Pagliosa Frida Maciel , Vinadé Maria Elizabeth do Canto
Published: October 2018

The n-hexane of the bark of Ocotea porosa fractioned by chromatographic tecniques, afforded there neolignanas of benzofuranoid, type: porosin, (2R,3a,3aR,5R)-3a-allyl-3-methyl-5-methoxy- 2- (3' ,4', dimethoxyphenyl )-6-oxo-2 ,3 ,3a ,4,5,6 hexahydrobenzofuran; II, rel (2R,3S,3aR,5R,6S,7 a S)-3a-allyl-6-7a-dihydroxi-3-methyl-5-methoxy-2- (3' ,4', dimethoxyphenyl )-2-3-3a ,4,5,6,7 ,7a-octahidrobenzofuran, and Il, reI (2R,3S,3aR,5R,6R,7 a S)-3a-allyl-6,7a-dihidroxy-3.;methyl-5-methoxy-2-(3' ,4', dimethoxyphenyl )-2,3,3a,5,6,7,7a-octahydrobenzofuran. The structures of isolated neolignanas were identified using IR, 1H spectral analysis and by comparison with published data of similar compounds.
Estudo anatômico da madeira de Myrceugenia glaucescens (Camb.) Legr. et Kaus
Authors: Marchiori José Newton Cardoso , Muñiz Graciela I. Bolzon
Published: October 2018

The general and minute wood features of Myrceugenia glaucescens are described. Anatomical data and photomicrographs of the wood are presented. The microscopic structure of the wood is compared with references of the species, genus and family Myrtaceae found in literature. The most important characters observed in the wood are the occurrence of perforation plates varying from simples to scelariform and reticulate, vessel-ray pits radially elongated, spiral thickenings in vessel elements and in the relatively scarce vasicentric tracheids. The presence of Heterogeneous type-I rays, vestured pits, very long vessel elements, apotracheal parenchyma, fibre tracheids and solitary pores, are also important features of this wood and of common occurrence in Myrtaceae.
Estudo anatômico da madeira de Vallesia glabra (Cav.) Link (Apocynaceae)
Authors: Muñiz Graciela Inés Bolzón , Marchiori José Newton Cardoso
Published: October 2018

The anatomical structure of the wood of Vallesia glabra (Cav.) Link is described, based in one specimen collected in the Argentinian Province of Santiago del Estero. Quantitative data and photomicrographs of certain wood features are presented. The most importante anatomical features of the wood are the diffuse porosity, small to medium solitary pores, simple perforation plates, small and vestured intervascular bordered pits, heterogeneous rays, apotracheal axial parenchyma, fibretracheids, and rhomboid chrystals in chambered cells of rays and axial parenchyma.
Desenvolvimento e mudanças celulares na estrutura dos raios xilemáticos de Rollinia emarginata Schlecht. (Annonaceae)
Authors: Botosso Paulo Cesar
Published: October 2018

Through microscopical observations in serial tangential sctions from cambium to pith the development and the most significant cellular changes in the structure of rays of Rollinia emarginata Schlecht. (Annonaceae) were observed. The ray characteristics of the outermost layer of secondary xylem are described and the major changes in the ray structure in different stages of secondary develooment are considered. The cellular changes observed are extremely variable, occurring isolated or in complex combinations. The most significant cellular changes observed during ray development are the following: origin of ray initials from fusiform initials or from cambial ray initials; changes resulting from the intrusive growth of fusiform initials through a group of ray initials and the loss of ray initials from the cambium. From these cellular transformations the most important changes in the origin of secondary rays, increase in height and width and reduction in the height of multisseriate rays are considered.
Modelos bayesianos
Authors: Camargo Maria Emilia , Bortoluzzi Odorico Antônio
Published: October 2018

In this work, will be presented the basic concept of Bayesian methodology, as well as the use of a simulated serie to check the sensibility of SBPC program to identify changes of state.
Transformação matemática utilizada na tela gráfica de microcomputador Apple
Authors: Ries Lilian Mari Kieling , Ries Ricardo Iserhardt
Published: October 2018

This work has as its main objective to present a way of transforming the high resolution graphic screen of the microcomputer, thus allowing the utilization of the standard system of cartesian coordinates. The transformation is done through the composition of a reflection RX and a translation TA. This work was developed in a microcomputer APPLE, D.O.S., 64 Kb, 8 Bits in BASIC language.
Equilíbrio físico-químico entre minerais e água do subsolo
Authors: Menegotto Egydio
Published: October 2018

Rock-forming mineral stability is comparedwith groundwater composition of certain ultrabasic massifs of Rio Grande do Sul, Brazil, under subtropical weather conditions. In this sttidy physicochemical equilibrium calculations are made, relating minerals to their hydrolisis solutions as well as relating primary to secondary minerals. These calculations permit one to draw straight line graphics that correspond to each chemical reaction and to limit stability areas whose coordinates are Mg and H4SiO4 concentrations. Plotted in these graphics are the mean compositions of the groundwater for each season of the year which indicate the relative stability scale of the different minerals and the mineralogical compounds that are in equilibrium with the environmental conditions.
Efeito da adição do brometo e cloreto de amônio na formação de micelas de brometo de citiltrimetilamônio
Authors: Polli Vania R. G. , Soares Gláucia U. , Ionescu Lavinel G.
Published: October 2018

The formation of micellar aggregates with cetyltrimethylammoniun bromide (CTAB) in aqueous salt solutions (NH4Br and NH4Cl) was studied by means of tensiometric and viscosimetric techniques. The experimental results indicated that the formation of micelles is enhanced by the addition of salt. The micellar system changes from spherical at low NH4Cl and NH4Br concentrations to elliptical and eventually liquid crystalline mesophases at higher sal concentration.
Gênero Crenicichla da região central do RS: Crenicichla lepidora Heckel, 1840
Authors: Bossemeyer Ilca Marion Knewitz , Weis Maria Lacy Cezimbra
Published: October 2018

Eighty three specimens of fish known as "joanas", belonging to the Zoological Collection of the Biology Department, University of Santa Maria, originating from the Ibicui River and the Dam of the Pisciculture Sector of the same Institution were studied and identified as Crenicichla lepidota Heckel, 1840 and theyr meristic and morphometric data compared with the data available in the literature.
MACHINE LEARNING SYSTEM BASED ON COMPUTER VISION FOR THE AUTOMATIC INSPECTION OF MAGNETIC PARTICLES IN MARINE STRUCTURES
Authors: NAVARRO LORENTE PEDRO JAVIER , MOREO LOPEZ IGNACIO JESUS
Published: October 2018

This work presents a system of supervised learning based on computer vision with the aim of solving the automation of non-destructive inspection tests based on magnetic particles. In this paper, three supervised learning algorithms have been tested: the nearest k neighbor (kNN), a Bayesian classifier (NBC) and the vector support machine (SVM). The developed system has been successfully tested on a set of images extracted during the inspection of magnetic particles on marine structures at the Navantia shipyard in Cartagena. The algorithm that offered the best result was the SVM with a sensitivity of 98.6% and a specificity of 100.0% in the detection of faults by magnetic particles. The vector of characteristics used is composed of a set of 16 elements formed by geometric characteristics and intensity values of the RGB, HSV, and CIE L * a * b * color spaces. The work presents a software application and a hardware system that, using the SVM algorithm, is capable of automatically detecting defects on marine structures during the magnetic particle test.
Keywords. Magnetic particles, Non-destructive testing, Machine learning, Computer vision
Accuracy of digital panoramic radiographs on the vertical measurements of dental implants
Authors: APAYDIN Burak Kerem , YASAR Fusun , KİZİLDAG Alper , TAŞDEMİR Osman Ufuk
Published: October 2018

Objectives:
Panoramic
radiography (PR) is the most commonly used technique to evaluate the dental and
associated structures. The aim of this study was to determine the accuracy of
panoramic radiographs (PRDs) in planning of dental implant treatment and the
magnification rate of a panoramic device for anterior, premolar and posterior
regions.Materials and Methods: Eighty-eight patients, who received PRD after implant surgery, were
included to the study. A total of 240 dental implants (53 anterior, 69
premolar, and 118 molar regions) of which previously vertical lengths were
known, were re-measured on post-operative radiographic images using the scaling
tools of the panoramic system to determine the magnification rate and the
accuracy of PRDs.  Cause the data had
normal distribution, the paired t test was used for the statistical analysis
(p<0.05). The magnification rate of the three regions was calculated as the
rate of measured vertical length of the implants to the actual vertical length
of the implants. Results: Statistically
significant difference was found between the actual and measured vertical
length of the implants on the PRD (p<0.05). However, the correlation rate
was found close to 1 for all regions. 
The difference between the actual and measured vertical length of the
implants on the PRD was 0.50 mm for the anterior region, 0.97 mm for the
premolar region, and 0.83 mm for the molar region. The magnification rate of
the panoramic system corrected by CliniviewTM (Instrumentarium
Corp., Tuusula, FINLAND) software was found around 1 for all the regions.

Conclusions: Due to their readily accessible nature and low radiation dose, PRDs can
be used in implant surgery for vertical measurements with 1 mm confidence
interval.
Low genetic diversity in captive populations of the critically endangered Blue-crowned Laughingthrush (Garrulax courtoisi) revealed by a panel of novel microsatellites
Authors: Chen Guoling , Zheng Chenqing , Wan Nelson , Liu Daoqiang , Fu Vivian Wing Kan , Yang Xu , Yu Yat-tung , Liu Yang
Published: October 2018

Background. Understanding genetic diversity and population structure is critically important for the conservation and management of endangered species. These factors are particularly relevant for species with small populations and/or restricted ranges, such as the critically endangered Blue-crowned Laughingthrush, Garrulax courtoisi, which has only two wild populations left in Wuyuan, Jiangxi and Simao, Yunnan, China.

Methods. In this study, novel microsatellites markers were developed using whole-genome sequencing of the target species. We genotyped 14 and nine individuals from the Oceanic Park of Hong Kong, which are of unknown origin, and the Nanchang Zoo, which were introduced from the wild Wuyuan population, respectively, using the novel microsatellite markers. The genetic diversity of captive Blue-crowned Laughingthrush populations was estimated based on genetic polymorphisms revealed by a new microsatellite data set and mitochondrial sequences.Then, we characterised the population structure using STRUCTURE, principal coordinates analysis, population assignment test using the microsatellite data, and haplotype analysis of mitochondrial data. Additionally, we quantified genetic relatednessbased on the microsatellite data with ML-Relate.

Results. This is the first study to describe this novel set of 12 microsatellite markers for Blue-crowned Laughingthrush. Our results based on the microsatellite dataset and mitochondrial sequences showed equally low levels of genetic diversity of the two captive Blue-crowned Laughingthrush populations. The population structure analysis, population assignment test using the microsatellite data, and haplotype analysis of the mitochondrial data showed some population structuring between these two populations. The average pairwise relatedness coefficient was not significant, and their genetic relatedness was quantified.

Discussion. This study provided a genetic tool which allowed the first estimate of captive population genetic diversity and relatedness for a critically endangered bird species. Furthermore, our results indicate that we cannot exclude the possibility that the origin of the Hong Kong captive population was the wild Wuyuan population. These results provide valuable knowledge that can help improve conservation management and planning for both captive and wild Blue-crowned Laughingthrush populations.
Hear and See: End-to-end sound classification and visualization of classified sounds
Authors: Miano Thomas
Published: October 2018

Machine learning is a field of study that uses computational and statistical techniques to enable computers to learn. When machine learning is applied, it functions as an instrument that can solve problems or expand knowledge about the surrounding world. Increasingly, machine learning is also an instrument for artistic expression in digital and non-digital media. While painted art has existed for thousands of years, the oldest digital art is less than a century old. Digital media as an art form is a relatively nascent, and the practice of machine learning in digital art is even more recent. Across all artistic media, a piece is powerful when it can captivate its consumer. Such captivation can be elicited through through a wide variety of methods including but not limited to distinct technique, emotionally evocative communication, and aesthetically pleasing combinations of textures. This work aims to explore how machine learning can be used simultaneously as a scientific instrument for understanding the world and as an artistic instrument for inspiring awe. Specifically, our goal is to build an end-to-end system that uses modern machine learning techniques to accurately recognize sounds in the natural environment and to communicate via visualization those sounds that it has recognized. We validate existing research by finding that convolutional neural networks, when paired with transfer learning using out-of-domain data, can be successful in mapping an image classification task to a sound classification task. Our work offers a novel application where the model used for performant sound classification is also used for visualization in an end-to-end, sound-to-image system.
Perceptual processing in the ventral visual stream requires area TE but not rhinal cortex
Authors: Eldridge Mark AG , Matsumoto Narihisa , Wittig John H , Masseau Evan C , Saunders Richard C , Richmond Barry J
Published: October 2018

There is an on-going debate over whether area TE, or the anatomically adjacent rhinal cortex, is the final stage of visual object processing. Both regions have been implicated in visual perception, but their involvement in non-perceptual functions, such as short-term memory, hinders clear-cut interpretation. Here, using a two-interval forced choice task without a short-term memory demand, we find that after bilateral removal of area TE, monkeys trained to categorize images based on perceptual similarity (morphs between dogs and cats), are, on the initial viewing, badly impaired when given a new set of images. They improve markedly with a small amount of practice but nonetheless remain moderately impaired indefinitely. The monkeys with bilateral removal of rhinal cortex are, under all conditions, indistinguishable from unoperated controls. We conclude that the final stage of the integration of visual perceptual information into object percepts in the ventral visual stream occurs in area TE.
WNT signaling memory is required for ACTIVIN to function as a morphogen in human gastruloids
Authors: Yoney Anna , Etoc Fred , Ruzo Albert , Carroll Thomas , Metzger Jakob J , Martyn Iain , Li Shu , Kirst Christoph , Siggia Eric D , Brivanlou Ali H
Published: October 2018

Self-organization of discrete fates in human gastruloids is mediated by a hierarchy of signaling pathways. How these pathways are integrated in time, and whether cells maintain a memory of their signaling history remains obscure. Here, we dissect the temporal integration of two key pathways, WNT and ACTIVIN, which along with BMP control gastrulation. CRISPR/Cas9-engineered live reporters of SMAD1, 2 and 4 demonstrate that in contrast to the stable signaling by SMAD1, signaling and transcriptional response by SMAD2 is transient, and while necessary for pluripotency, it is insufficient for differentiation. Pre-exposure to WNT, however, endows cells with the competence to respond to graded levels of ACTIVIN, which induces differentiation without changing SMAD2 dynamics. This cellular memory of WNT signaling is necessary for ACTIVIN morphogen activity. A re-evaluation of the evidence gathered over decades in model systems, re-enforces our conclusions and points to an evolutionarily conserved mechanism.