Tracking Knowledge Propagation Across Wikipedia Languages

In this paper, we present a dataset of inter-language knowledge propagation in Wikipedia. Covering the entire 309 language editions and 33M articles, the dataset aims to track the full propagation history of Wikipedia concepts, and allow follow-up research on building predictive models of them. For this purpose, we align all the Wikipedia articles in a language-agnostic manner according to the concept they cover, which results in 13M propagation instances. To the best of our knowledge, this dataset is the first to explore the full inter-language propagation at a large scale. Together with the dataset, a holistic overview of the propagation and key insights about the underlying structural factors are provided to aid future research. For example, we find that although long cascades are unusual, the propagation tends to continue further once it reaches more than four language editions. We also find that the size of language editions is associated with the speed of propagation. We believe the dataset not only contributes to the prior literature on Wikipedia growth but also enables new use cases such as edit recommendation for addressing knowledge gaps, detection of disinformation, and cultural relationship analysis

Alternative Depressor for Apatite Flotation

The reality of the phosphate mines in the world has been changing. The reserves content has reduced over the years. As a consequence of this reduction, contaminants such as iron, silica and magnesium contained in phosphate rock concentrate are affecting the stability of the chemical plants, which compromises the rate of phosphate utilization and the quality of the products produced. In order to obtain a concentrate of phosphatic rocks of market acceptable quality (35% P2O5), the flotation process is the most suitable method for processing this. The present study aims to evaluate the potential of replacing corn starch as a depressant in the flotation step. Corn starch is the most commonly used depressant because of its availability, or even lack of studies on the efficiency of other depressants. Microflotation tests were carried out in modified Hallimond tubes with the concentration of the Clariant Flotigam 5806 collector at 5.0 mg / L and the corn starch depressant used in industries, cassava starch and cassava flour at dosages of 0, 400, 800, 1,600, 3,200, 4,800 and 6,400 g / t at pH 8, the depressors were evaluated in overdoses with the objective of analyzing depression stagnation or continuity of the same according to increase of the dosage. The air flow used for the tests was 40 cm3s-1 and a pressure of 10 psi, which provides less hydraulic drag. 1 g of apatite mineral was used in the granulometry of -100 + 150 #. The characterization of the starches and the sample of the apatite mineral were made by scanning electron microscopy SEM, EDS, fluorescence and X-ray diffraction, as well as their zeta potential. The results of the characterization showed that the sample of the mineral has high purity, showing absence of mixed particles. The results below (Figure 1) indicate that corn starch depressor presents a better recovery compared to cassava starch and cassava flour. Cassava starch requires a dosage two times higher than corn starch to achieve the same depression of the apatite mineral. Flotation tests showed can propitiate a better understanding of the dosages of starches and flour used. Please click Additional Files below to see the full abstract

Using Two Alternative Vegetable Oil’s as Collector in Apatite Froth Flotation

The Brazilian phosphate deposits are of igneous origin exhibiting a complex mineralogy where fluorapatite is the predominant mineralogical variety fron the apatite group, this deposits still contain carbonateapatite and hydroxyapatite associated with secondary phosphates, iron oxides (magnetite, goethite and limonite), micas and minerals bearing niobium, titanium and barium. The flotation process as a separation and enrichment of the acceptable levels by the P2O5 market (35%) is the most efficient. Brazilian mineral industries use synthetic collectors from international companies. Many of these oils were initially produced to sort out the demand for biodiesel production, with their market being diminished and farmers having their request reduced, impacting the income of many families, besides what using natural oils is more ecofriendly and sustainable. In the present study were used collectors obtained by the cold saponification of vegetable oil of macaúba (Acrocomia aculeata (Jacq.) Lodd. ex Mart., purchased from a regional producer), pinhão-manso (Jatropha curcas L., donated by EMBRAPA Agroenergia), or the mixture of both in the proportion of 50% (m/m). The saponification process was carried out with the addition of 5 g of each oil or their mixture in 20 g of distilled water and stirred for 5 min. Subsequently, 10 mL water solution of NaOH (10% w/v) was added while stirring was continued for 5 minutes. After this period, the solution was doused with water until 100 g of total mass was reached and homogenized for another 10 min. Microflotation tests were performed on modified Hallimond tubes with a collector concentration of 2.5 mg.L-1 at pH 8, and 1 g of apatite less than 100#. The conditioning time was 7 min and 1 min for flotation. An application rate for tests of 40 cm3s-1 and a pressure of 10 psi. The results below (figure 1) point to the best recovery of the macaúba oil (1) reaching 90% recovery of the apatite, while the pinhão-manso (2) obtained only about 15%. The influence of the mixture of oils can be observed, reducing the recovery of the mixture of oils (3) to 10% when compared to macauba (1). The means are different by the Tukey test at 95% confidence. As each vegetable oil has characteristic lipid profiles, this differentiated composition seems to directly influence the ability to collect the mineral. It is concluded that the oils present employment potential as collectors, requiring more tests to optimize the mixture of them. Please click Additional Files below to see the full abstract

Uma análise do Parâmetro Big M do Modelo Matemático para o Problema do Carteiro Rural Capacitado com Janelas de Tempo/ An Analysis of the Big M Parameter of the Mathematical Model for the Capacitated Rural Postman Problem with Time Windows

As formulações matemáticas para os Problemas de Roteamento em Arcos com Janelas de Tempo, em geral, contém um conjunto de restrições formado por inequações não lineares e para a utilização do método exato de resolução “Branch-and-Bound” existe a necessidade de linearização desse conjunto de restrições. Para isso, a maior parte dos trabalhos que apresentam formulações matemáticas para Problemas de Roteamento em Arcos com Janelas de Tempo utilizam-se de uma constante de grande valor, um parâmetro “Big M”. Este trabalho traz uma análise, por meio do solver GUROBI, do desempenho do método exato de resolução em uma formulação matemática baseada em Programação Linear Inteira Mista do Problema do Carteiro Rural Capacitado com Janelas de Tempo quando são consideradas três diferentes metodologias para gerar o parâmetro Big M do modelo. As três metodologias foram apresentadas nos trabalhos de Monroy-Licht et al. (2014) e Thomaz et al. (2018).  Os testes são realizados sobre 20 instâncias adaptadas de Monroy-Licht et al. (2014) que possuem até 60 nós, 90 arestas, 45 arestas requeridas e 4 veículos. A aplicação real do problema é associada à coleta de lixo. Resultados computacionais mostram que não há metodologia predominante sobre as demais, mas os diferentes valores do parâmetro Big M podem gerar relaxações fracas e dificuldades numéricas no método exato de resoluçã

Construction and validation of a logical model for specialized Rehabilitation Centers

OBJETIVO Construir e validar um modelo lógico para a atenção nos Centros Especializados em Reabilitação (CER) a partir da análise do processo de trabalho e de questões organizativas de centros do Rio Grande do Norte. MÉTODOS Estudo metodológico desenvolvido em três etapas: 1) estudo documental de legislações e portarias relacionadas ao serviço de saúde e à Rede de Cuidados à Pessoa com Deficiência (RCPD); 2) realização de grupos focais, com estudo censitário dos CER do Rio Grande do Norte, para compreender e avaliar o cotidiano do serviço; e 3) sistematização das informações coletadas e, por fim, proposição e validação do modelo lógico avaliativo. RESULTADOS O modelo englobou cinco categorias centrais do processo de trabalho e organizacional: “demandas”, “recursos” (insumos, financeiros e força de trabalho), “processos”, “produtos e resultados” e “missão, valores e fatores externos”. CONCLUSÃO O modelo lógico construído foi adequado para representação gráfica do processo de trabalho e questões organizativas dos CER. Evidenciou-se que o funcionamento dos serviços está alinhado com as normativas. Contudo, ainda há lacunas organizacionais que precisam ser abordadas a fim de melhorar a resolutividade do serviço e a articulação com outros pontos da rede.OBJECTIVE To build and validate a logical model for health care in Specialized Rehabilitation Centers (CER) by analyzing the work process and organizational issues of centers in Rio Grande do Norte. METHODS This is a methodological study developed in three stages: 1) documentary research of legislation and ordinances concerning the healthcare service and the Disability Care Network (RCPD); 2) focus groups with a Census study of the CER in Rio Grande do Norte to understand and assess the daily activities of the service; and 3) systematization of the information collected and, finally, proposition and validation of the evaluative logical model. RESULTS The model encompassed five central categories of the work and organizational process: “demands”, “resources” (inputs, financial and workforce), “processes”, “products and results” and “mission, values and external factors”. CONCLUSION The logical model built was suitable for graphical representation of the work process and organizational issues of the SRC. The study showed that the functioning of the services is in line with the regulations. However, there are still organizational gaps that need to be addressed to improve the resolution capacity of the service and the articulation with other points of the network

Levantamento Retrospectivo dos Atendimentos em Estrias do Ambulatório de Fisioterapia Dermato-Funcional da Universidade Potiguar, NATAL- RN

As estrias são uma atrofia de pele adquirida devido ao rompimento de fibras elásticas e colágenas. Um dos métodos de tratamento para as estrias é a galvanopuntura..Este estudo realizou um levantamento retrospectivo de 8 anos de atendimentos realizados no ambulatório de Fisioterapia Dermato-funcional da Universidade Potiguar utilizando a corrente galvânica como forma de tratamento.Foram analisados 155 prontuários (2000 a 2008), sendo 151 pacientes do sexo feminino e apenas 4 do  masculino, com faixa etária variando de 15 a 51 anos.Avaliando os resultados, evidenciou-se que a média de sessões mais freqüente foi de 4 a 7, sempre uma vez por semana, sendo que 50,96% dos pacientes não concluíram o tratamento, 22% fizeram apenas o teste avaliativo de inflamação e 28,96% no máximo 3 sessões. As causas principais de abandono foram o descrédito na terapia (21,93%), complicações (2%), uso de medicamentos antiinflamatórios (2%) e dor (2%)

Uso de destiladores de mao con solubles en pollos de engorde

            This study aimed to evaluate the inclusion of distiller's dried grains with soluble (DDGS) of corn in the broiler diet on growth performance, carcass and viscera yield, and biometrics of the gastrointestinal tract. In total, 700 male Cobb 500 broilers were distributed in a completely randomized design with five treatments, seven replicates, and 20 chicks per experimental unit. The treatments consisted of a control and four levels of inclusion of DDGS (4, 8, 12, and 16%) in the diet. The inclusion of the DDGS did not influence the performance in the periods of 1 to 7 and 36 to 42 days of age. For broilers 8 to 35 days old, the feed intake was not altered by the treatments, but the average weight gain and feed conversion (p<0.05) had a quadratic polynomial effect. There was a reduction in carcass and breast weight of broilers slaughtered at 42 days of age fed with 12 and 16% DDGS. The DDGS in diets can be considered an alternative ingredient in diets for broilers up to 12% inclusion.El estudio tuvo como objetivo evaluar la inclusión de granos secos de maíz de destilería con solubles (DDGS) en la dieta de pollos de engorde sobre el rendimiento del crecimiento, la canal y las vísceras, y la biometría del tracto gastrointestinal. En total, se distribuyeron 700 pollos de engorde Cobb 500 machos en un diseño completamente al azar con cinco tratamientos, siete repeticiones y 20 pollos por unidad experimental. Los tratamientos consistieron en un control y cuatro niveles de inclusión de DDGS (4, 8, 12 y 16%) en la dieta. La inclusión de los DDGS no influyó en el rendimiento en los periodos de 1 a 7 y 36 a 42 días de edad. Para pollos de engorde de 8 a 35 días de edad, el consumo de alimento no fue alterado por los tratamientos, pero la ganancia de peso promedio y la conversión alimenticia (p<0.05) tuvieron un efecto polinomial cuadrático. Hubo una reducción en el peso de la canal y de la pechuga de los pollos de engorde sacrificados a los 42 días de edad alimentados con 12 y 16% de DDGS. Los DDGS en dietas pueden considerarse un ingrediente alternativo en dietas para pollos de engorde hasta un 12% de inclusión

Qualidade de vida em estudantes adolescentes

De um modo geral, a qualidade de vida é avaliada como satisfatória e foram encontradas associações significativas entre a idade, série e trabalho em relação aos domínios da qualidade de vida. Relativamente à idade os estudantes mais velhos apresentaram um nível superior no Domínio Relações Sociais. Os estudantes do 2o ano apresentaram níveis superiores na qualidade de vida global e nos Domínios Físico e Ambiental. Os estudantes que trabalhavam apresentaram níveis superiores na qualidade de vida global e no Domínio Ambiental. Os estudantes mais velhos que trabalhavam e que cursavam no 2o ano apresentavam níveis superiores nos domínios da qualidade de vida físico e ambiental e no índice de qualidade de vida global. Conclui-se, também, que os Domínios mais preocupantes para a qualidade de vida dos adolescentes que participaram no presente estudo foram o Psicológico e o Ambiente indicando que estratégias de intervenção devem ser direcionadas para estes domínios, aumentando os fatores protetores e diminuindo os fatores de risco