bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação do diafragma piezelétrico de baixo custo no monitoramento do processo de retificação plana tangencial
Authors: Fabiano Luiz Felipe Gilli , Ribeiro Danilo Marcus Santos , Conceição Junior Pedro Oliveira , Silva Kauê Luís Oliveira da , Aguiar Paulo Roberto de , Bianchi Eduardo Carlos
Published: September 2017

RESUMO Os processos de usinagem são de extrema importância para a fabricação de peças mecânicas, as peças exigem alta precisão dimensional e geométrica e qualidade em sua construção. Dentre os processos de usinagem, o processo de retificação se destaca por ser um dos processos mais usado, por sua precisão e bom acabamento. É essencial que se conheça bem este processo, já que o mesmo se encontra na última etapa da manufatura. Assim, problemas durante o processo de retificação compromete-se a peça e pode-se perder o trabalho realizado em todas as etapas anteriores, acarretando em alto custo na produção e perda de matéria-prima. O presente trabalho tem como objetivo desenvolver um método de monitoramento das condições da superfície das peças, realizando um estudo comparativo da rugosidade e queima de peças retificadas com os sinais captados por um diafragma piezelétrico de baixo custo composto por Titanato Zirconato de Chumbo (PZT), bem como por um sensor de emissão acústica (EA). Os ensaios experimentais foram realizados em uma retificadora tangencial plana, onde um banco de ensaios foi desenvolvido empregando-se um rebolo de CBN com ligante resinoide em corpos de prova de aço VC131. Posteriormente, para caracterizar a superfície das peças, foi realizada a inspeção visual, medidas de rugosidade, medidas de micro dureza Vickers e uma análise metalográfica, para verificar a microestrutura de cada peça. Os sinais foram aquisitados através de um osciloscópio de alta taxa de amostragem e, posteriormente, tratados com filtros digitais. Na sequência, esses sinais, foram comparados com a queima e a rugosidade de cada peça em suas respectivas condições, através de técnicas de processamento de sinais. Notou-se que o aumento da rugosidade, bem como a ocorrência da queima da peça, possui um relacionamento com aumento do sinal RMS do PZT e da EA. Por meio deste estudo pôde ser verificada a eficácia do sinal emitido pelo diafragma piezelétrico de baixo custo, que apresentou uma correspondência satisfatória com a condição das peças do aço VC 131 após a retificação, de acordo com a análise espectral e o estudo do sinal nas devidas bandas de frequência utilizadas.
Lajes alveolares pré-fabricadas: estudo da influência do número e do instante de preenchimento de alvéolos no ganho de resistência à força cortante
Authors: Pinheiro Gregory Lee , Carvalho Roberto Chust , Almeida Filho Fernando Menezes de
Published: September 2017

RESUMO Este trabalho aborda a influência do momento e número de alvéolos preenchidos no ganho de resistência à força cortante em lajes alveolares pré-fabricadas, por meio de um estudo teórico que faz uso das equações contidas na ABNT NBR 14861-2011 para o cálculo da resistência ao esforço cortante, e por um estudo experimental onde foram ensaiadas lajes sem alvéolos preenchidos, e com o preenchimento de 2 ou 4 alvéolos antes ou após a liberação da protensão na pista de concretagem. O estudo teórico aponta a vantagem da execução do preenchimento após a liberação da protensão, convergindo aos valores experimentais para lajes com 4 alvéolos preenchidos, porém diverge para o caso de preenchimento de 2 alvéolos.
Propriedades do aço AISI 4140 nitretado a gás
Authors: Diehl Igor Luis , Dong Juan , Rocha Alexandre da Silva
Published: September 2017

RESUMO Nitretação está entre os tratamentos superficiais mais efetivos. Os principais benefícios da nitretação aos aços são o aumento da dureza, resistência ao desgaste, resistência à fadiga e resistência à corrosão. Com isso, este trabalho tem por objetivo avaliar a resposta do AISI 4140 a diferentes condições de nitretação, quanto às propriedades químicas, microestruturais, de dureza e propriedades tribológicas. Para isso, foram feitas análises metalográficas, espectroscopia de emissão óptica de descarga incandescente (GDOES), difração de raios-x, microdureza e ensaio pino-sobre-disco. Nitretações gasosas foram executas em duas diferentes condições, com potenciais de nitretação de 0,6 e 2,0. A duração dos tratamentos foi de duas, quatro e seis horas. Adicionalmente, foi realizado um tratamento de nitrocarbonetação de seis horas, com a adição de carbono via injeção de gás de CO2, com potencial de carbonetação de 1,0. Os resultados mostraram a formação de camada branca seguida de uma camada de difusão com gradiente de propriedades como dureza e composição química. Um aumento significativo de dureza de 400 HV é observado na camada de difusão. Os diferentes tratamentos mostraram que o potencial de nitretação tem maior influência sobre a espessura do que o tempo de tratamento. A nitrocarbonetação formou uma camada nitretada 21% menos espessa do que nas amostras nitretadas de mesmo potencial de nitretação, enquanto que a camada de poros foi semelhante. Nos testes tribológicos realizados, houve uma diminuição do desgaste de 61% com a presença da camada nitretada e o modo de desgaste mudou de abrasivo/adesivo para abrasivo.
Avaliação de inibidores de corrosão para estruturas de concreto armado
Authors: Trevisol César Augusto , Silva Paulo Roberto Paes da , Paula Marcos Marques da Silva , Pelisser Fernando
Published: September 2017

RESUMO A corrosão de armadura é um dos maiores problemas que reduzem a durabilidade das estruturas de concreto, causada, frequentemente, pelo processo de carbonatação e ataque de íons cloretos, presentes em ambientes agressivos e marinhos. Estima-se que 90% dos problemas patológicos em estruturas de concreto no mundo tem como consequência a corrosão de armadura. Dessa forma, a pesquisa por materiais com resistência a este processo de deterioração é fundamental para melhorar a durabilidade e a eficiência das estruturas de concreto. Neste contexto, foi estudado o efeito de três aditivos químicos, um comercial à base de sais de nitrito, o molibdato de sódio (MoNa2O4) e o tungstato de sódio (Na2O4W.2H2O), utilizados nos teores de 1% e 2% em relação à massa de cimento. Foram preparados corpos de prova cilíndricos de argamassa (classe de resistência de 30 MPa) com aço embebidos neste, para serem submetidos ao ensaio eletroquímico de polarização potenciodinâmica. A utilização do aditivo comercial não foi eficiente na redução das taxas de corrosão, porém, o efeito do tempo de cura, reduziu a taxa média de corrosão de 4,7 mm/ano aos 60 dias, para 1,6 mm/ano, aos 90 dias. Os melhores resultados foram obtidos para os aditivos de molibdato e tungstato, nos quais foi observado um índice de eficiência do aditivo de 50%, para adição de 1% de molibdato, e de 29%, para adição de 2% de tungstato.
Uso de granulado de borracha em substituição parcial ao agregado miúdo na produção de tijolos ecológicos
Authors: Silva Thayane Dias , Paula Heber Martins de , Silva Dyego da , Carvalho Igor Mazon , Fonte Jakson Trindade , Pereira Ruvier Rodrigues
Published: September 2017

RESUMO O volume de resíduos sólidos produzido vem aumentando de modo desordenado e prejudicial à natureza, uma vez que não são dados a ele fins adequados. Um dos resíduos sólidos que mais vem preocupando ambientalistas, sociedade e governo são os pneus inservíveis, os quais possuem materiais em sua composição que demoram centenas de anos para se deteriorar. Sendo assim, este trabalho tem como objetivo demonstrar a viabilidade do uso de granulados de borracha de pneus inservíveis na fabricação de tijolos comuns de concreto, tornando-se uma alternativa de destinação para pneus descartados no meio ambiente. Para tanto, foram produzidos tijolos de referência (sem resíduo) e com adições de 5%, 10% e 20% de granulado de borracha em substituição ao agregado miúdo, comparando-os através de ensaios de compressão simples e absorção de água nos blocos. Além disso, os tijolos produzidos foram comparados a blocos maciços cerâmicos utilizados na região de Catalão, Goiás. Houve também a caracterização química e granulométrica dos materiais utilizados para compor os tijolos ecológicos. Frente aos resultados é possível concluir que os blocos com adição do resíduo de borracha apresentaram menor densidade e peso próprio, além de possuírem maior taxa de absorção. Em relação à resistência à compressão, percebeu-se que houve uma queda de aproximadamente 76% com a adição de borracha, não havendo significativa alteração até 20% de borracha. Mesmo com estas características os tijolos atenderam às exigências das normas, o que possibilita sua indicação para alvenaria de vedação.
Evaluation of phytotherapy alternatives for controlling Rhipicephalus (Boophilus) microplus in vitro
Authors: Villarreal José Pablo Villarreal , Santos Pedro Rassier dos , Silva Maria Antonieta Machado Pereira da , Azambuja Rosaria Helena Machado , Gonçalves Carolina Lambrecht , Escareño Jesus Jaime Hernández , Santos Tânia Regina Bettin dos , Pereira Claudio Martin Pereira de , Freitag Rogério Antonio , Nascente Patrícia da Silva
Published: September 2017

Abstract The objective of this study was to identify the main chemical components of the essential oil of Cuminum cyminum L. (cumin) and of the fixed oils of Bertholletia excelsa (Brazil nut) and of Helianthus annuus (sunflower seed). As well as testing the three oils and three different commercial synthetic acaricides against engorged females of Rhipicephalus (Boophilus) microplus in order to explore their acaricidal efficacy. Six different concentrations of the oils (200, 100, 50, 25, 12.5 and 6.25 mg/mL) and the active principles were evaluated with the Adult Immersion Test (AIT). The two main chemicals components of C. cyminum L. were the cuminaldehyde and the γ-terpinene. In both B. excelsa and H. annuus were the linoleic and oleic acid. C. cyminum L. showed high acaricidal activity (100%) over the engorged females and on their reproductive characteristat from the concentration of 100 mg/mL. B. excelsa and H. annuus had low acaricidal activity (39.39% and 58.75% in the concentration of 200 mg/mL respectively). The amidine and the pyrethroid (35.12% and 1.50% respectively). It can be concluded that the oil of C. cyminum L. may be a phytoterapic alternative for the cattle's tick control.
Avispora mochogalegoi n. sp. (Apicomplexa: Sarcocystidae) in the little owl, Athene noctua (Strigiformes: Strigidae), in mainland Portugal
Authors: Cardozo Sergian Vianna , Berto Bruno Pereira , Caetano Inês , Maniero Viviane Camara , Santos Marcos , Fonseca Isabel Pereira da , Lopes Carlos Wilson Gomes
Published: September 2017

Abstract The little owl Athene noctua (Scopoli, 1769) is a small raptor that is widely distributed from northern to southern Portugal and several other countries in Europe, Asia and North Africa, and which has been introduced into New Zealand. In the current study, 18 fecal samples were collected from little owls kept at the Lisbon Center for Wild Animal Recovery, which is located in Monsanto Forest Park, Lisbon, Portugal. Twelve (67%) of them were found to be passing an undescribed species of Avispora in their feces. The oocysts of Avispora mochogalegoi n. sp. were ellipsoidal with a bilayered wall and measured 38.9 × 32.9 µm, with a shape index of 1.18. No micropyle, oocyst residuum or polar granule was present. The sporocysts were subspherical, measuring 21.1 × 20.1 µm. Stieda, sub-Stieda and para-Stieda bodies were absent. The sporocyst residuum was composed of a compact subspherical mass of granules. This is the fourth species of Avispora reported in Strigiformes.
Infrastructure construction in developing countries: a shared approach to sustainability
Authors: Roohnavaz Changiz
Published: October 2017

The oil and gas and extractive industries face the constant challenge of locating new resources in remote parts of the developing world. Skill shortage, inhospitable locations and outdated engineering practices and technology characterise these projects. Companies operate under fixed-period concessions, which place huge time pressures on the exploration and production cycle. Construction of the associated civil engineering infrastructure is often on the critical path. These projects typically use pools of foreign skilled workers and large volumes of imported materials and equipment. The cost and carbon dioxide emissions associated with logistics alone are enormous. Overcoming these challenges calls for a critical rethink in the way traditional civil engineering construction practice is undertaken. This paper reports on the implementation of a sustainability management and resource training framework by a foreign consulting and advisory firm. The framework examines in-country labour skill sets, natural resource and technology relevant to project needs, identifying constraints and knowledge gaps. Innovative engineering solutions that maximise use of local workforce, materials and technology are subsequently designed in line with project timelines. Case studies from Central Asia, the Middle East and Africa, demonstrate that the framework is an effective tool for human resource development and sustainability management.
Potential affordances of public art in public parks: Central Park and the High Line
Authors: Cushing Debra Flanders , Pennings Mark
Published: October 2017

Public art is an artistic expression created in streets, squares and other public spaces, including parks. Using the two popular public parks in the New York City, Central Park and the High Line, this paper explores the affordances offered by public art in these two urban environments, with a focus on physical, intellectual and emotional connections between the visitor, the artwork and the landscape setting. Using affordance theory as a framework, it considers the design of the landscape as a behaviour setting that affords viewing, acknowledgement and reflection of the artwork within the contemporary cultural context. Using preliminary qualitative observations of six artworks within the two parks, this research suggests that public art has the potential to afford such diverse opportunities for public park visitors. In order for these affordances to be actualised, the design of the park and the artwork's intentions should be coordinated to ensure that the experiences of the visitor align with the claimed benefits of public art.
Tendencias de participación y utilitarismo de la naturaleza en Chiapas-México. Un análisis comparativo
Authors: Céspedes Ochoa Elizabeth , Campos Saldaña Rady Alejandra
Published: September 2017

Las políticas de desarrollo han sido utilizadas como instrumentos hegemónicos para legitimar formas de dependencia y justificar la depredación de los recursos naturales, de tal forma, que le otorga características distintivas a las políticas de desarrollo de México a nivel del Gobierno federal y estatal. Este artículo plantea la perspectiva de la construcción estratégica de las políticas del desarrollo en México, desde un análisis de tendencias comparativas con las estrategias de los planes de desarrollo de Chiapas, abordado en términos de la participación del Estado, enfoque sobre el uso y manejo de los recursos naturales y la relación con poblaciones indígenas.
University of Ilorin Final Year Students’ Experience in Practice Teaching Exercise
Authors: Abdullahi Musa Siddiq , Salisu Mussa
Published: October 2017

Practice teaching is a vital aspect of the teacher preparatory program in teacher training institutions. This study examined the University of Ilorin final year students’ experience in a practice teaching exercise. It made use of descriptive survey research design. The population for this study were all students of the Faculty of Education, University of Ilorin, Ilorin, Nigeria. The researchers’ self-developed questionnaire with a reliability coefficient of 0.63 was used for data collection while the data collected were analysed using descriptive statistics of mean and standard deviation and inferential statistics of independent t-test. It was found that during the course of practice teaching exercises, student-teachers acquired skills which enabled them to use a variety of teaching methods, and instructional resources, improved their skills in tests construction, scoring and recording, built their teaching confidence and presentation, among others. However, student-teachers were faced with a number of challenges in the course of lesson presentation during practice teaching. It was, therefore, recommended among others, that student-teachers should not perceive their personality and logical presentation of instructional objectives as challenges but rather should embrace and exploit it to improve and widen their (cognitive) domains.
Modified genomic DNA extraction method for Heterosigma akashiwo v1
Authors: Accerbi Monica , K Nagarajan Vinay , Coyne Kathryn , J Green Pamela
Published: September 2017

This protocol was developed for isolating high quality genomic DNA from Heterosigma akashiwo for the purpose of Next generation sequencing technologies. We successfully repeated this protocol to obtain genomic DNA.
[RETRACTED] Microbial eukaryotic 18S tag-sequence processing/QC - V4 region (automating) v2
Authors: K Hu Sarah
Published: September 2017

[RETRACTED]

This protocol provides step-by-step instructions for implementing a perl script to easily automate quality checking of raw tag sequences. This was specifically constructed for the numerous 18S diversity projects (which target the V4 hypervariable specific for evaluting protistan diversity). It is highly recommended that you follow along this Github repo:https://github.com/shu251/QC_steps_V4_tagsequencing Last updated Sept 30th, 2017
IDEATIONAL AND INTERPERSONAL MEANINGS OF CHILDREN NARRATIVES IN INDONESIAN PICTUREBOOKS
Authors: Hermawan Budi , Sukyadi Didi
Published: September 2017

Recent understanding as strongly believed by studies investigating the interactive or interpersonal meanings of images in such printed texts as textbooks and picturebooks shows that interpersonal relation can be established not only through verbal sentences as the primarily representational mode of our experiences but can also be represented through visual forms such as photographs and pictures. Further, studies on how meanings are represented through verbal and visual modes have revealed how readers’ experiences and readers’ social roles in relation to the content of the texts are constructed. The construction of readers’ social roles through the use of images in printed texts has been regarded to be parallel with how interactants’ social position is enacted in direct communication relying on the use of verbal sentences. In Indonesian contexts, however, studies on how verbal and visual modes represent experiences and construct social position of the interactants seem to be underexplored. The present study examined four Indonesian picturebooks using the perspectives of multimodality and reported how the children’s experiences were represented through the verbal and the visual modes used, and how these two semiotic resources represented the social relationship between the characters in the picturebook and the potential readers of the books. The examination of the verbal texts has been focused on the clauses as the building blocks of the texts by identifying the participants, process types, circumstances, and clause types. The examination of the pictures has been focused on such visual elements as who/what are in the picture, what activities taking place, the attributes possessed by the represented participants, and the circumstances. In addition, how the represented participants address the viewers was also examined. The results of the analysis show that ideasionally the narrative is mostly centered around the activities done by and to children, which are presented as an offer to the readers. Verbally and visually the represented participants are socially equal to the children readers. The three picturebooks are excellent examples of picturebooks that present a narrative of Indonesian children designed for young readers because of their simple vocabulary, simply-constructed Indonesian grammar employed, and simple yet interesting plot they deal with.
Paradoxal relação da vida versus morte e a transfusão de sangue nas Testemunhas de Jeová
Authors: Gonçalves Thaiana Cirqueira
Published: September 2017

Objetivo: O presente trabalho visa estudar o conflito de princípios fundamentais na base de bioética e no ordenamento jurídico brasileiro. Metodologia: Foi feita uma revisão narrativa de literatura. Resultados: Pacientes que são vinculados / adeptos da religião "Testemunhas de Jeová" recusam tratamento de transfusão de sangue por motivo de suas crenças religiosas, contudo, é necessário respeitar o princípio da dignidade humana. O tratamento com sangue para os adeptos da Testemunhas de Jeová é uma problemática complexa que envolve diferentes paradigmas e uma colisão de preceitos fundamentais, como a liberdade de crença e o direito à vida. Há um conflito entre a autonomia do paciente e o dever e responsabilidade civil do profissional de saúde. Para o tratamento alternativo, alguns métodos são oferecidos para mas o sangue não tem um substituto eficaz, sendo muitas vezes o único meio para se manter uma vida. Conclusão: Há escassa literatura para o tema da transfusão de sangue em adeptos da Testemunhas de Jeová e as posições são antagônicas.
Discricionariedade administrativa e eutanásia animal em unidade de vigilância de zoonoses: um estudo de caso
Authors: Silva Camila da , Freccia André , De Arruda Mauro Maciel
Published: September 2017

A discricionariedade do poder público para a prática da eutanásia em animais nas Unidades de Vigilância de Zoonoses (UVZ`s) em prol da saúde pública é tema de muita discussão. Este artigo apresenta um estudo de caso sobre a prática de eutanásia ocorrido em uma Unidade de Vigilância de Zoonose na cidade de Belo Horizonte/MG, visando analisar a discricionariedade pública e o processo da eutanásia bem como as legislações que permeiam as UVZ`s para executar tal processo em cães errantes.
Segurança do paciente cirúrgico e direitos humanos dos pacientes
Authors: Romano Ana Caroline Leoncio , Oliveira Aline Albuquerque Sant'Anna de
Published: September 2017

Introdução: a segurança dos pacientes cirúrgico é um tema abordado há décadas que ainda merece discussão e estratégias incisivas. Objetivo: apresentar o contexto de segurança do paciente cirúrgico e propor uma abordagem conjunta com os direitos humanos. Metodologia: foi realizado buscas nas bases de dados de periódicos online da Biblioteca Virtual de Saúde, Scielo, MedLine, Lilacs, Pubmed, Ministério da Saúde e o portal Proqualis, com os descritores: segurança do paciente, segurança cirúrgica, cirurgia segura, direitos humanos dos pacientes e cuidado centrado no paciente. Conclusão: os princípios dos direitos humanos do paciente, cuidado centrado no paciente e responsabilidade do paciente, são ferramentas que podem contribuir positivamente para melhorar a segurança do paciente.
Schichten mit geschätzten Schichtgrößen II
Authors: Quatember Andreas
Published: September 2017

(Eine Weiterentwicklung und eine Korrektur zum Artikel des gleichen Autors im Heft1/1996 der Österreichischen Zeitschrift für Statistik)
Proberechnungen für den VPI ’86
Authors: Hudec Marcus , Kurzawa Roland , Titz Harald
Published: September 2017

Der Beitritt Österreichs zur Europäischen Union wirkt sich auch auf die bisher in der Amtlichen Statistik praktizierten Konzepte im Zusammenhang mit der Berechnung und Gliederung des Verbraucherpreisindex (VPI) aus. Neben der Verwendung EU-konformer Warenklassifikationssysteme ist auch die Homogenisierung der verwendetenBerechnungsmethodik für den VPI erforderlich. Der vorliegende Artikel dokumentiert in diesem Kontext erstellte Proberechnungen und weitergehende Überlegungen basierend auf den monatlichen Einzelpreisdaten des Warenkorbes für den Analysezeitraum Jänner 1989 bis Dezember 1995.
Characterizations of the Shakil-Kibria-Singh Distribution
Authors: Hamedani G.G.
Published: September 2017

Characterizations of a continuous univariate distribution due to Shakil, Kibria and Singh (2010) (SKS), based on a simple relationship between two truncated moments is presented. We also point out that some special cases of the SKS distribution can be characterized based on the hazard function.
A Bayesian Analysis of FemaleWage Dynamics Using Markov Chain Clustering
Authors: Pamminger Christoph , Tüchler Regina
Published: September 2017

In this work, we analyze wage careers of women in Austria. We identify groups of female employees with similar patterns in their earnings development. Covariates such as e.g. the age of entry, the number of children or maternity leave help to detect these groups. We find three different types of female employees: (1) “high-wage mums”, women with high income and one or two children, (2) “low-wage mums”, women with low income and‘many’ children and (3) “childless careers”, women who climb up the careerladder and do not have children.We use a Markov chain clustering approach to find groups in the discretevaluedtime series of income states. Additional covariates are included when modeling group membership via a multinomial logit model.
Are There Too Many R Packages?
Authors: Hornik Kurt
Published: September 2017

The number of R extension packages available from the CRAN repository has tremendously grown over the past 10 years. We look at this phenomenon in more detail, and discuss some of its consequences. In particular, we argue that the statistical computing community needs a more common understanding of software quality, and better domain-specific semantic resources.
Correlation Between Indicators Over Time in Thematic Maps
Authors: Templ Matthias
Published: September 2017

Visualising indicators in thematic maps is nowadays state-of-theart and many statistical agencies and data providers support their figures also within interactive visualisation. However, mostly raw data values are presented in maps and the visualisation of statistical estimation results is rarely done and topic in this contribution.For the estimation of cross-correlations of one reference time series to other time series, we show that it is important to prewhiten the time series based on the model estimates of the reference time series. In addition, a simple weighting of time series to increase the importance of recent years over values from the very past is proposed.Finally, an application of our implemented visualisation tool using European alcohol consumption statistics is shown.
Why Does It Always Rain on Me? A Spatio-Temporal Analysis of Precipitation in Austria
Authors: Umlauf Nikolaus , Mayr Georg , Messner Jakob , Zeileis Achim
Published: September 2017

It is popular belief that the weather is “bad” more frequently on weekends than on other days of the week and this is often perceived to be associated with an increased chance of rain. In fact, the meteorological literature does report some evidence for such human-induced weekly cycles although these findings are not undisputed. To contribute to this discussion, a modern data-driven approach using structured additive regression modelsis applied to a newly available high-quality data set for Austria. The analysis investigates how an ordered response of rain intensities is influenced by a (potential) weekend effect while adjusting for spatio-temporal structure using spatially varying effects of overall level and seasonality patterns. The underlying data are taken from the HOMSTART project which provides daily precipitation quantities over a period of more than 60 years and a dense netof more than 50 meteorological stations all across Austria.
Application of the L-Moment Method when Modelling the Income Distribution in the Czech Republic
Authors: Bílková Diana , Malá Ivana
Published: September 2017

This paper deals with modelling income distributions in the Czech Republic in 1992–2007. The net annual income per capita for Czech households is evaluated from data based on the microcensus and the EU-SILC 2005–2008. For all analysed years the distribution of incomes was estimated in the whole sample as well as in the subgroup of households, whose heads are physicists (or experts in related sciences), architects and engineers. Inthe paper the three-parametric lognormal distribution is used as a model. Unknownparameters are estimated with the use of four methods – those of maximum likelihood, quantiles, moments and L-moments.
An Overview of FIGARCH and Related Time Series Models
Authors: Tayefi Maryam , Ramanathan T.V.
Published: September 2017

This paper reviews the theory and applications related to fractionally integrated generalized autoregressive conditional heteroscedastic (FIGARCH) models, mainly for describing the observed persistence in the volatility of a time series. The long memory nature of FIGARCH models allows to be a better candidate than other conditional heteroscedastic models for modeling volatility in exchange rates, option prices, stock market returns and inflation rates. We discuss some of the important properties of FIGARCH models inthis review. We also compare the FIGARCH with the autoregressive fractionally integrated moving average (ARFIMA) model. Problems related to parameter estimation and forecasting using a FIGARCH model are presented. The application of a FIGARCH model to exchange rate data is discussed. We briefly introduce some other models, that are closely related to FIGARCH models. The paper ends with some concluding remarks and future directions of research.
On Least Squares Estimation in a Simple Linear Regression Model with Periodically Correlated Errors: A Cautionary Note
Authors: Smadi Abdullah A. , Abu-Afouna Nour H.
Published: September 2017

In this research the simple linear regression (SLR) model with autocorrelated errors is considered. Traditionally, correlated errors are assumed to follow the autoregressive model of order one (AR(1)). Beside this model we will also study the SLR model with errors following the periodic autoregressive model of order one (PAR(1)). The later model is useful for modeling periodically autocorrelated errors. In particular, it is expected to beuseful when the data are seasonal. We investigate the properties of the least squares estimators of the parameters of the simple regression model when the errors are autocorrelated and for various models. In particular, the relative efficiency of those estimates are obtained and compared for the white noise, AR(1) and PAR(1) models. Also, the generalized least squares estimates for the SLR with PAR(1) errors are derived. The relative efficiency of the intercept and slope estimates based on both methods is investigated via Monte-Carlo simulation. An application on real data set is also provided.It should be emphasized that once there are sufficient evidences that errors are autocorrelated then the type of this autocorrelation should be uncovered. Then estimates of model’s parameters should be obtained accordingly, using some method like the generalized least squares but not the ordinary least squares.
“Take the Beuys off!” – Reconsidering the Current Concept of Ekphrasis in the Performative Poetry of Thomas Kling
Authors: Führer Heidrun
Published: October 2017

A portrait poem by the German poet Thomas Kling (1957-2005) about the German artist Joseph Beuys is the starting point to reconsider the current ekphrasis discourse in the light of experienced visuality by combining the concept of ancient rhetoric with modern ideas of imagination, multimodality and performativity.
Simulation of a long-haul fiber optic link with a two-mode optical fiber
Authors:   Povolzhskiy State University of Telecommunications and Informatics, Burdin V. , Bourdine A. ,   Povolzhskiy State University of Telecommunications and Informatics
Published: September 2017

Modern telecommunication networks approach the capacity crunch, which is associated with the so-called nonlinear Shannon limit. So, the passage to fiber optic links with few-mode optical fibers is considered as an alternative solution of the described problem concerned with high nonlinearity of conventional commercial single-mode optical fibers. Presently, various designs of few-mode optical fibers have been known, with the recently published works presenting experimental results demonstrating their potentialities for long-haul fiber optic links. A lot of models of long-haul fiber optic links with few-mode optical fibers have been developed based on which features of a few-mode optical fiber transport network were numerically simulated. This work presents the results of simulation of a 6000-km long-haul fiber optic link with a two-mode optical fiber and 100-km-per-span Erbium doped fiber optic amplifiers system under 100 Gbps DP-DQPSK data transmission. We studied the use of particular linearly polarized modes and optical vortices for signal transmission. The computation results were compared with the simulation of the same fiber optic link with a single-mode optical fiber under the identical conditions.
ABSENTEÍSMO POR MOTIVO DE DOENÇA: UM ESTUDO EM UMA INDÚSTRIA DO POLO INDUSTRIAL DE MANAUS
Authors: Palheta Cláudio Farias , Guimarães Maria da Gloria V.
Published: September 2017

Este estudo teve como objetivo analisar os episódios de absenteísmo causados por doenças em geral em trabalhadores de uma indústria de transformação no Amazonas para produção de fitas para impressão por transferência térmica conhecida como Thermal Transfer Ribbon – TTR. O absenteísmo-doença é um evento que está relacionado à ausência do trabalhador as suas atividades laborais e que causam impactos negativos para a produtividade e a lucratividade das organizações. Analisar as doenças que mais afastam os trabalhadores de seus postos de trabalho torna-se importante porque proporciona uma visão mais clara acerca das causas dessas ausências e pode auxiliar as organizações a adotarem ações que permitam a redução desses eventos. A metodologia da pesquisa foi de campo, na qual foram coletadas informações de 187 atestados médicos, que posteriormente, foram analisadas as informações buscando identificar as principais causas de afastamentos e calculando os índices de frequência das licenças médicas e duração média das ausências. Os resultados apresentados confirmam que o absenteísmo por licença médica são episódios que ocorrem com frequência na indústria estudada e junto a isso apresenta uma compreensão mais clara sobre como absenteísmo-doença pode impactar na produtividade das indústrias.
El Sistema de Tribunales de Inversión. Posibles incompatibilidades con el Derecho europeo
Authors: López Rodríguez Ana Mercedes
Published: October 2017

Con la entrada en vigor del Tratado de Lisboa en 2009 la Unión Europea ha adquirido la competencia exclusiva en materia de inversiones extranjeras directas (art. 207 TFUE), convirtiéndose junto a la política comercial común en uno de los principales pilares de la acción exterior de la misma. Esta circunstancia ha hecho que la Unión Europea haya interpretado esta nueva competencia como una oportunidad para intentar un tratamiento comprensivo de los temas de comercio e inversión a nivel europeo y para proponer una reforma profunda del sistema tradicional de protección de inversiones y de los mecanismos de resolución de controversias inversor-Estado, conocidos en sus siglas anglosajonas de ISDS. Entre las reformas propuestas destaca la creación de un Tribunal Internacional de Inversiones, propuesta no exenta de polémica y que encontraría posibles escollos desde el punto de vista del Derecho de la Unión.

Recibido:10 noviembre 2016
Aceptado: 11 mayo 2017
Publicación en línea: 01 octubre 2017
Papilloma Virus humano na perspectiva da promoção da saúde: revisão narrativa
Authors: Pacheco Van Der Sand Isabel Cristina , Torquetti Jonathas Alan , Cabral Fernanda Beheregaray , Arboit Eder Luiz
Published: October 2017

Estudo com objetivo de conhecer a produção dos últimos dez anos, em publicações brasileiras e de língua espanhola, sobre promoção da saúde, via educação, para redução das taxas de infecção pelo HPV/câncer do colo do útero. Trata-se de revisão bibliográfica do tipo narrativa, baseada na descrição simplificada de estudos e informações sobre determinado assunto, com bases em 16 passos. Da busca realizada na Biblioteca Virtual de Saúde, após os refinamentos, oito artigos compuseram o corpus amostral da pesquisa. Das publicações analisadas, percebeu-se que o conjunto centrou-se em três categorias, definidas a partir do modelo teórico CAP, que utiliza o conhecimento, atitudes e práticas para mapear o cenário educacional de uma comunidade e, a partir disso, avaliar a necessidade de intervenção: “conhecimentos acerca da infecção pelo HPV e sua relação com o câncer do colo do útero; atitudes e práticas promotoras e não promotoras de saúde relativas à infeção pelo HPV e câncer do colo do útero; práticas de promoção da saúde, com foco na educação para prevenir o HPV e o câncer do colo do útero”. O estudo contribui no sentido de evidenciar o déficit de conhecimento dos sujeitos dos estudos acerca da temática e a necessária reorientação das práticas de promoção à saúde e prevenção de agravos, em especial, no campo do ensino. Reforça a necessária busca de equidade na corresponsabilidade da prevenção do HPV entre homens e mulheres e de ações de promoção da saúde pelos profissionais.
The employment of Łódź University tourism and recreation graduates: A sociological analysis
Authors: Żulicki Remigiusz
Published: October 2017

This article is focused on selected aspects of the economic ‘fate’ of Tourism and Recreation graduates of the University of Łódź (UŁ). Its aim is to seek answers to the question: ‘What determines graduate employment?’ Surveys conducted by the Career Office of University of Łódź among graduates one year after graduation in 2014, 2015 and 2016 are the empirical basis. Tourism and Recreation graduates were compared with others from the Faculty of Geographical Sciences UŁ. The logistic regression technique was used to predict the status of graduate employment based on independent variables. The strongest predictors of graduate employment were structural and institutional characteristics. The quantitative results were interpreted in the context of the modern role of universities.
Cone‐Beam Computed Tomography and Interdisciplinary Dentofacial Therapy: An American Academy of Periodontology Best Evidence Review Focusing on Risk Assessment of the Dentoalveolar Bone Changes Influenced by Tooth Movement
Authors: Mandelaris George A. , Neiva Rodrigo , Chambrone Leandro
Published: October 2017

Background: The aim of this systematic review is to evaluate whether cone‐beam computed tomography (CBCT) imaging can be used to assess dentoalveolar anatomy critical to the periodontist when determining risk assessment for patients undergoing orthodontic therapy using fixed or removable appliances.

Methods: Both observational and interventional trials reporting on the use of CBCT imaging assessing the impact of orthodontic/dentofacial orthopedic treatment on periodontal tissues (i.e., alveolar bone) were included. Changes in the alveolar bone thickness and height around natural teeth as well as treatment costs were evaluated. MEDLINE (via PubMed) and EMBASE databases were searched for articles published in the English language, up to and including July 2016, and extracted data were organized into evidence tables.

Results: Thirteen studies were included in this systematic review describing the positive or deleterious changes on the alveolar bone surrounding natural teeth undergoing orthodontic tooth movement or influenced by orthopedic forces through fixed appliances. Clinical recommendation summaries presenting the strengths and weaknesses of the evidence in terms of benefits and harms were generated.

Conclusions: CBCT imaging can improve the periodontal diagnostic acumen regarding alveolar bone alterations influenced by orthodontic tooth movement and can help determine risk assessment prior to such intervention. Clinicians are also better informed to determine risk assessment and develop preventative or plan interceptive periodontal augmentation (soft tissue and/or bone augmentation) therapies for patients undergoing orthodontic tooth movement. These considerations are recognized as being especially critical for treatment approaches in patients where buccal tooth movement (expansion) is planned in the anterior mandible or involving the maxillary premolars.
¿Debe mejorar la forma de diagnosticar en psiquiatría?
Authors: Vega-Dienstmaier Johann M.
Published: September 2017

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Psicopatología de la ipseidad y la corporalidad: a propósito de un caso de esquizofrenia cenestopática.
Authors: Valle Rubén , Di Natale-Guevara Milko , Cruzado Lizardo
Published: September 2017

La fenomenología ha dividido conceptualmente al cuerpo humano en el “cuerpo-objeto”, la entidad física que puede ser percibida por uno mismo y por otros, y en el “cuerpo-vivido”, que es la experiencia inmediata del propio cuerpo, tácitamente experimentado (o vivido) en una perspectiva de primera persona. El “cuerpo-vivido” origina la experiencia pre-reflexiva de la vida, adscribible al yo mínimo, core self o ipseidad que constituye el sustento nuclear de la conciencia del yo. Este modo corporal opera implícitamente en cada acción que ejecutamos en el mundo y nos permite la aprehensión y entendimiento del entorno. Sin embargo, en algunos procesos mórbidos el cuerpo puede perder su calidad de “transparencia” y volverse anormalmente explícito, tal como ocurre en la esquizofrenia. En esta patología, los pacientes sufren un distanciamiento subjetivo entre la mente y el cuerpo al que se denomina descorporalización y, como consecuencia,  experimentan un debilitamiento del sentido básico del yo, alteraciones de la relación sujeto-objeto y del otorgamiento de significados, así como en la vivencia de la intersubjetividad. Anormalidades del “cuerpo-vivido” han sido identificadas previamente en los casos de esquizofrenia desorganizada, paranoide y catatónica. En este reporte analizamos cómo se manifiestan las alteraciones del cuerpo-vivido y de la ipseidad en un caso de esquizofrenia cenestopática.
Coupling Uncertainties with Accuracy Assessment in Object-based Slum Detections, Case Study: Jakarta, Indonesia
Authors: Pratomo Jati , Kuffer Monika , Martinez Javier , Kohli Divyani
Published: September 2017

Object-Based Image Analysis (OBIA) has been successfully used to map slums. In general, the occurrence of uncertainties in producing geographic data is inevitable. However, most studies concentrated solely on assessing the classification accuracy and neglecting the inherent uncertainties. Our research analyses the impact of uncertainties in measuring the accuracy of OBIA-based slum detection. We selected Jakarta as our case study area, because of a national policy of slum eradication, which is causing rapid changes in slum areas. Our research comprises of four parts: slum conceptualization, ruleset development, implementation, and accuracy and uncertainty measurements. Existential and extensional uncertainty arise when producing reference data. The comparison of a manual expert delineations of slums with OBIA slum classification results into four combinations: True Positive, False Positive, True Negative and False Negative. However, the higher the True Positive (which lead to a better accuracy), the lower the certainty of the results. This demonstrates the impact of extensional uncertainties. Our study also demonstrates the role of non-observable indicators (i.e., land tenure), to assist slum detection, particularly in areas where uncertainties exist. In conclusion, uncertainties are increasing when aiming to achieve a higher classification accuracy by matching manual delineation and OBIA classification.
A REVIEW OF MEDICINAL PLANTS USED BY THE BASOTHO FOR TREATMENT OF SKIN DISORDERS: THEIR PHYTOCHEMICAL, ANTIMICROBIAL, AND ANTI-INFLAMMATORY POTENTIAL
Authors: Moteetee A. , Kose L. Seleteng
Published: October 2017

Background: While the incidence of skin diseases is high in developing countries, they are not regarded as priority due to low

mortality rates, however, they are a major concern due to their co-occurrence with HIV/AIDS. Due to lack of accessibility to

healthcare facilities and unaffordability of conventional medicines, many people in rural areas resort to medicinal plants. The aim

of the study is to document the plants used for treating skin afflictions by the Basotho people residing in Lesotho and the Free

State Province of South Africa.

Materials and Methods: A comprehensive survey of existing ethnobotanical literature including numerous books was carried

out. Electronic databases such as Google Scholar, PubMed, and ScienceDirect were also used to obtain information on the antiinflammatory,

antimicrobial, and phytochemical activities of the medicinal plants.

Results and discussion: 57 plant species are utilised for the treatment of various skin ailments with a majority of them used for

wounds (26 species) and venereal sores (19 species). The plants are distributed in 39 families with the Asteraceae being the most

represented with seven species, followed by Solanaceae and Asphodelaceae with four species each. 38 species have previously

been evaluated for their phytochemical properties, 40 for their anti-microbial potential, while 29 have been assessed for their antiinflammatory

activity. Of the 57, 13 species have not been evaluated for any of the three categories.

Conclusion: Many of the plants have been shown to have anti-microbial, anti-inflammatory, and phytochemical properties, which

then validates their traditional use.
TRACE ELEMENTS MAY BE RESPONSIBLE FOR MEDICINAL EFFECTS OF SAUSSUREA LANICEPS, SAUSSUREA INVOLUCRATE, LYCIUM BARBARUM AND LYCIUM RUTHENICUM
Authors: Wang Hui , Wang Shengyi , Cui Dongan , Li Xia , Tuo Xin , Liu Yongming
Published: October 2017

Background: The pharmacodynamics of Saussurea laniceps, Saussurea involucrata, Lycium barbarum and Lycium

ruthenicum have been researched, and trace elements have been considered as the essential elements, but little attention

has been paid to the trace elements of the herbal medicine. We would like to report on the content of copper (Cu),

manganese (Mn), iron (Fe), zinc (Zn) and selenium (Se) levels in the four herbal medicines.

Materials and Methods: A total of 20 whole plant materials were collected of each species in China. The content of

Cu, Mn, Fe and Zn in the dried aerial parts was estimated by the standard atomic absorption spectrophotometry. The

level of Se was detected using hydride generation atomic fluorescence spectrometry.

Results: The mean concentrations of Cu, Mn, Fe, Zn and Se in S. laniceps were 7.758±0.924μg/g, 201.3±16.24μg/g,

222.7±35.10μg/g, 18.48±2.913μg/g and 1.42±0.16μg/g, respectively; S. involucrata were 19.56±2.20μg/g,

88.75±8.53μg/g, 812.7±126.9μg/g, 34.85±3.81μg/g and 1.04±0.05μg/g, respectively; L. barbarum were

10.83±0.26μg/g, 9.598±0.32μg/g, 55.65±3.83μg/g, 11.92±0.27μg/g and 11.84±0.59μg/kg, respectively; L. ruthenicum

were 12.67±0.39μg/g, 13.78±1.13μg/g, 98.04±5.03μg/g, 14.46±1.27μg/g and 35.12±2.34μg/kg, respectively.

Conclusion: This study provided the trace elements content of Cu, Mn, Fe, Zn and Se in the four herbal medicines. The

trace elements are maybe other functional compounds for medicinal effects. Deep relationship between

pharmacological and trace elements contents, especially its mechanism of action should be future research.