bluuebunny/crossref_metadata_2025 huggingface dataset:
Performance Assessment of a Humidity Measurement System and Its Use to Evaluate Moisture Characteristics of Wheelchair Cushions at the User–Seat Interface
Authors: Liu Zhuofu , Cheng Haifeng , Luo Zhongming , Cascioli Vincenzo , Heusch Andrew , Nair Nadia , McCarthy Peter
Published: April 2017

Little is known about the changes in moisture that occur at the body–seat interface during sitting. However, as increased moisture can add to the risk of skin damage, we have developed an array of MEMS (Micro-Electro-Mechanical System) humidity sensors to measure at this interface. Sensors were first evaluated against traceable standards, followed by use in a cross-over field test (n = 11; 20 min duration) using different wheelchair cushions (foam and gel). Relative humidity (RH) was measured at the left mid-thigh, right mid-thigh and coccyx. Sensors were shown to be unaffected by loading and showed highly reliable responses to measured changes in humidity, varying little from the traceable standard (<5%). Field-test data, smoothed through a moving average filter, revealed significant differences between the three chosen locations and between the gel and foam cushions. Maximum RH was attained in less than five minutes regardless of cushion material (foam or gel). Importantly, RH does not appear to distribute uniformly over the body–seat interface; suggesting multiple sensor positions would appear essential for effectively monitoring moisture in this interface. Material properties of the cushions appear to have a significant effect on RH characteristics (profile) at the body–seat interface, but not necessarily the time to peak moisture.
Comments on: Uncertainty of Blood Alcohol Concentration (BAC) Results as Related to Instrumental Conditions: Optimization and Robustness of BAC Analysis Headspace Parameters. Chromatography 2015, 2, 691–708
Authors: Tiscione Nicholas
Published: April 2017

The 2015 publication of original research by Boswell and Dorman [1], Uncertainty of Blood Alcohol Concentration (BAC) Results as Related to Instrumental Conditions: Optimization and Robustness of BAC Analysis Headspace Parameters described an evaluation of the effect of modifying headspace parameters on ethanol analysis by gas chromatography with dual flame ionization detection (GC-FID).[...]
Reply to Comment on “Uncertainty of Blood Alcohol Concentration (BAC) Results as Related to Instrumental Conditions: Optimization and Robustness of BAC Analysis Headspace Parameters”. Chromatography 2015, 2, 691–708
Authors: Dorman Frank , Boswell Haleigh
Published: April 2017

The original publication [1] was a short communication paper where a series of experiments were performed using a range of headspace oven temperatures and vial pressures to measure the resulting accuracy and precision of ethanol concentrations using headspace gas chromatography coupled to flame ionization detection (HS-GC-FID) analysis.[...]
Impacts of Low-Carbon Innovation and Its Heterogeneous Components on CO2 Emissions
Authors: Yan Zheming , Yi Lan , Du Kerui , Yang Zhiming
Published: April 2017

This paper aims to investigate the impact of low-carbon innovation on CO2 emissions. Using patent statistics, we measured low-carbon innovations for 15 major economies during the period of 1992–2012. Then, we classified low-carbon technology into clean and gray technology according to the patent classification system. Following the empirical Environmental Kuznets Curve (EKC) framework, we explored the effects of low-carbon innovation and its components on CO2 emissions. We did not find any evidence of significant influence of low-carbon innovation. Through further estimations, a significantly negative effect of clean innovation was found while the effect of gray innovation is not clear. Heterogeneous impacts within low-carbon technology provide an explanation for the insignificant impact of low-carbon innovation.
Impacts of Hydrogen Peroxide and Copper Sulfate on the Control of Microcystis aeruginosa and MC-LR and the Inhibition of MC-LR Degrading Bacterium Bacillus sp.
Authors: Kansole Michelline , Lin Tsair-Fuh
Published: April 2017

Laboratory batch experiments were carried out to evaluate the impacts of H2O2 and copper sulfate on M. aeruginosa PCC7820, microcystin-LR (MC-LR) and its degrading bacteria Bacillus sp., previously isolated from Hulupi Lake in Taiwan. The study shows that 3 mg·L−1 hydrogen peroxide removed only 9% M. aeruginosa within seven days of exposure, from an initial cell concentration of 2 × 106 cells/mL. With copper sulfate, a concentration of 2 mg·L−1 removed 99% M. aeruginosa cells, but showed negligible efficacy in removing 0.05 mg·L−1 MC-LR. At a higher dosage, 20 mg·L−1 H2O2 led to 40% and 95% removal, respectively for MC-LR and M. aeruginosa cells. Copper sulfate and H2O2 were both lethal to Bacillus sp. population, with mortality rate constants of k = 0.04 h−1 and 0.03 h−1 under 1 mg·L−1 copper sulfate and 5 mg·L−1 H2O2, respectively. H2O2 is competitive in terms of cost, with a capability of degrading organic compounds with the assistance of ultraviolet (UV) light, and it may be considered as an alternative algaecide to copper sulfate in reservoirs for algae growth control.
What triggers healthcare-seeking behaviour when experiencing a symptom? Results from a population-based survey
Authors: Elnegaard Sandra , Pedersen Anette Fischer , Sand Andersen Rikke , Christensen René de-Pont , Jarbøl Dorte Ejg
Published: April 2017

Background

The decision process of whether or not to contact the GP is influenced by different factors which have not all been well examined.

Aim

The aim of this study was to analyse whether contact to the GP is associated with concern about the symptom, influence on daily activities and symptom burden, such as the total number of symptoms experienced by each person in a general population.

Design & setting

This Danish nationwide cross-sectional study comprises a random sample of 100 000 people, representative of the adult Danish population ≥20 years.

Method

Baseline data were collected in a web-based survey conducted from June to December 2012.

Results

In total 49 706 (52.5%) individuals answered the questionnaire; 45 483 (91.5%) individuals experienced at least one of 44 predefined symptoms during the 4 weeks preceding the completion of the questionnaire. They reported 268 772 symptom experiences of which 58 370 symptoms (21.7%) resulted in contact with a GP. A high level of concern and influence on daily activities was associated with significantly higher odds for GP contact. A high burden of symptoms was associated with lower odds of contact with the GP.

Conclusion

Approximately every fifth symptom reported by individuals from the general population leads to GP contact. Influence on daily activities, burden of symptoms, and concern about the symptom were significant factors associated with the decision of whether to contact the GP. No overall association between sex and GP contact was observed.
Clinical Epidemiological Profile of Children with Acute Respiratory Insuficiency in a Pediatric Intensive Care Unit
Authors: Dourado Sandra Beatriz Pedra Branca , Dourado Paulo Vicente , Veloso Marylane Viana , Nunes Geandra Batista Lima , Cardoso Hélida Lessa De Aragão , Cavalcante Andreia Karla De Carvalho Barbosa , Feitosa Verbenia Cipriano , Cavalcante Milena France Alves , Coêlho Danieli Maria Matias , Ribeiro José Francisco , Monteiro Elizabeth Soares Oliveira De Holanda , Chagas Diego Cipriano
Published: April 2017

Objective: to know the epidemiological clinical profile of children admitted for acute respiratory failure (ARF) in the Pediatric Intensive Care Unit (ICU) of the Teresina Emergency Hospital (TEH), from 2010 to 2015.

Method: a quantitative approach, with a sample of 451 medical records obtained in the electronic system of hospitalization of the patients who were admitted to the Pediatric ICU of the Hospital. After approval by the Ethics Committee of Estácio Ceut Faculty, the study was started.

Results: Of the 721 hospitalizations due to ARF in children, 451 (62.6%) required clinical interventions in the ICU. Of these, 59.4% were male, in the age range of one to six years (61.9%), with a diagnosis in the ICD 10 by J96.0. In 99.7% of the cases, hospitalized for a period of more than ten days (72.4%), originating in the interior of Piauí (63.4%), whose discharge occurred by administrative closure (75.6%), followed by deaths, which were 19,3%.

Conclusion: Acute Respiratory Insufficiency is a serious problem of global, national and local public health, because it is a morbidity that requires advanced technology for health treatment, with relative mortality. It is reasonable for therapeutic measures to prevent respiratory diseases to be systematically stimulated and implemented by health services to prevent them.

KEYWORDS: Infant Mortality; Respiratory Insufficiency; Epidemiology.
Masses of Kepler-46b, c from Transit Timing Variations
Authors: Saad-Olivera Ximena , Nesvorný David , Kipping David M. , Roig Fernando
Published: April 2017

We use 16 quarters of the Kepler mission data to analyze the transit timing variations (TTVs) of the extrasolar planet Kepler-46b (KOI-872). Our dynamical fits confirm that the TTVs of this planet (period

days) are produced by a non-transiting planet Kepler-46c (

days). The Bayesian inference tool MultiNest is used to infer the dynamical parameters of Kepler-46b and Kepler-46c. We find that the two planets have nearly coplanar and circular orbits, with eccentricities

somewhat higher than previously estimated. The masses of the two planets are found to be

and

Jupiter masses, with M

b
being determined here from TTVs for the first time. Due to the precession of its orbital plane, Kepler-46c should start transiting its host star a few decades from now.
A 2MASS/AllWISE Search for Extremely Red L Dwarfs: The Discovery of Several Likely L Type Members of β Pic, AB Dor, Tuc-Hor, Argus, and the Hyades
Authors: Schneider Adam C. , Windsor James , Cushing Michael C. , Kirkpatrick J. Davy , Shkolnik Evgenya L.
Published: April 2017

Young brown dwarfs share many properties with directly imaged giant extrasolar planets. They therefore provide unique laboratories for investigating the full range of temperature and mass encompassed by the growing collection of planets discovered outside our Solar System. Furthermore, if they can be tied to a particular group of coeval stars, they also provide vital anchor points for low-mass empirical isochrones. We have developed a novel procedure for identifying such objects based on their unique 2MASS and AllWISE colors. Using our search criteria, we have identified 50 new, late-type L dwarf candidates, 47 of which are spectroscopically confirmed as L dwarfs with follow-up near-infrared spectroscopy. We evaluate the potential membership of these objects in nearby, young moving groups using their proper motions, photometric distance estimates, and spectroscopic indicators of youth, and find seven likely L-type members belonging to the β Pictoris moving group, the AB Doradus moving group, the Tucana-Horologium association, or the Argus association, in addition to several lower probability members. Also found are two late-type (L5 and L6) potential members of the nearby Hyades cluster (WISEA J043642.75+190134.8 and WISEA J044105.56+213001.5).
High Dense Gas Fraction in a Gas-rich Star-forming Galaxy at z = 1.2∗
Authors: Gowardhan Avani , Riechers Dominik A. , Daddi Emanuele , Pavesi Riccardo , Dannerbauer Helmut , Carilli Chris
Published: April 2017

We report observations of dense molecular gas in the star-forming galaxy EGS 13004291 (z = 1.197) using the Plateau de Bure Interferometer. We tentatively detect HCN and HNC

emission when stacked together at

significance, yielding line luminosities of

K km s−1 pc2 and

K km s−1 pc2, respectively. We also set 3σ upper limits of <7–8 ×109 K km s−1 pc2 on the

,

), and HC3N(J = 20 → 19) line luminosities. We serendipitously detect CO emission from two sources at

and

in the same field of view. We also detect CO(

) emission in EGS 13004291, showing that the excitation in the previously detected CO(

) line is subthermal (

). We find a line luminosity ratio of

/

= 0.17 ± 0.07, as an indicator of the dense gas fraction. This is consistent with the median ratio observed in

galaxies (

/

 = 0.16 ± 0.07) and nearby ULIRGs (

/

 = 0.13 ± 0.03), but higher than that in local spirals (

/

= 0.04 ± 0.02). Although EGS 13004291 lies significantly above the galaxy main sequence at

, we do not find an elevated star formation efficiency (traced by

/

) as in local starbursts, but a value consistent with main-sequence galaxies. The enhanced dense gas fraction, the subthermal gas excitation, and the lower than expected star formation efficiency of the dense molecular gas in EGS 13004291 suggest that different star formation properties may prevail in high-z starbursts. Thus, using

/

as a simple recipe to measure the star formation efficiency may be insufficient to describe the underlying mechanisms in dense star-forming environments inside the large gas reservoirs.
Helium Ionization in the Diffuse Ionized Gas Surrounding UCH ii Regions
Authors: Roshi D. Anish , Churchwell E. , Anderson L. D.
Published: April 2017

We present measurements of the singly ionized helium-to-hydrogen ratio (

) toward diffuse gas surrounding three ultracompact H ii (UCH ii) regions: G10.15-0.34, G23.46-0.20, and G29.96-0.02. We observe radio recombination lines of hydrogen and helium near 5 GHz using the GBT to measure the

ratio. The measurements are motivated by the low helium ionization observed in the warm ionized medium and in the inner Galaxy diffuse ionized regions. Our data indicate that the helium is not uniformly ionized in the three observed sources. Helium lines are not detected toward a few observed positions in sources G10.15-0.34 and G23.46-0.20, and the upper limits of the

ratio obtained are 0.03 and 0.05, respectively. The selected sources harbor stars of type O6 or hotter as indicated by helium line detection toward the bright radio continuum emission from the sources with mean

value 0.06 ± 0.02. Our data thus show that helium in diffuse gas located a few parsecs away from the young massive stars embedded in the observed regions is not fully ionized. We investigate the origin of the nonuniform helium ionization and rule out the possibilities (a) that the helium is doubly ionized in the observed regions and (b) that the low

values are due to additional hydrogen ionizing radiation produced by accreting low-mass stars. We find that selective absorption of ionizing photons by dust can result in low helium ionization but needs further investigation to develop a self-consistent model for dust in H ii regions.
XMM-Newton and NuSTAR Simultaneous X-Ray Observations of IGR J11215-5952
Authors: Sidoli L. , Tiengo A. , Paizis A. , Sguera V. , Lotti S. , Natalucci L.
Published: April 2017

We report the results of an XMM-Newton and NuSTAR coordinated observation of the Supergiant Fast X-ray Transient (SFXT) IGR J11215–5952, performed on 2016 February 14, during the expected peak of its brief outburst, which repeats every ∼165 days. Timing and spectral analysis were performed simultaneously in the energy band 0.4–78 keV. A spin period of 187.0 (±0.4) s was measured, consistent with previous observations performed in 2007. The X-ray intensity shows a large variability (more than one order of magnitude) on timescales longer than the spin period, with several luminous X-ray flares that repeat every 2–2.5 ks, some of which simultaneously observed by both satellites. The broadband (0.4–78 keV) time-averaged spectrum was well deconvolved with a double-component model (a blackbody plus a power law with a high energy cutoff) together with a weak iron line in emission at 6.4 keV (equivalent width, EW, of 40 ± 10 eV). Alternatively, a partial covering model also resulted in an adequate description of the data. The source time-averaged X-ray luminosity was 1036 erg s−1 (0.1–100 keV; assuming 7 kpc). We discuss the results of these observations in the framework of the different models proposed to explain SFXTs, supporting a quasi-spherical settling accretion regime, although alternative possibilities (e.g., centrifugal barrier) cannot be ruled out.
Broadband Photon Spectrum and its Radial Profile of Pulsar Wind Nebulae
Authors: Ishizaki Wataru , Tanaka Shuta J. , Asano Katsuaki , Terasawa Toshio
Published: April 2017

The observed radial profiles of the X-ray emission from pulsar wind nebulae (PWNe) have been claimed to contradict the standard 1D steady model. However, the 1D model has not been tested to simultaneously reproduce the volume-integrated spectrum and the radial profile of the surface brightness. We revisit the 1D steady model and apply it to PWNe 3C 58 and G21.5−0.9. We find that the parameters of the pulsar wind, the radius of the termination shock

, and magnetization σ greatly affect both the photon spectrum and radial profile of the emission. We have shown that the parameters constrained by the entire spectrum lead to an X-ray nebula smaller than the observed nebula. We have also tested the case that reproduces only the observations in X- and gamma-rays, ignoring the radio and optical components. In this case, there are parameter sets that reproduce both the spectrum and emission profile, but the advection time to the edge of the nebula becomes much smaller than the age. Our detailed discussion clarifies that the standard 1D steady model has severe difficulty to simultaneously reproduce both the volume-integrated spectrum and the surface brightness. This implies that the model should be improved by taking into account extra physical processes such as spatial diffusion of particles. Additionally, we calculate the surface brightness profile of the radio, optical, and TeV gamma-rays. The future observations in these wavelengths are also important to probe the spatial distributions of the relativistic plasma and the magnetic field of PWNe.
Explorando conceitos de Reações Químicas por meio do Método Jigsaw de Aprendizagem Cooperativa
Authors: Broietti Fabiele Cristiane Dias , Souza Miriam Cristina Covre de
Published: April 2017

Este artigo descreve uma proposta de atividade baseada na aprendizagem cooperativa, usando o método Jigsaw. A atividade foi desenvolvida com bolsistas do projeto PIBID/Química de uma universidade pública do Paraná, na qual foram abordados conceitos de Reações Químicas e discutidas as possibilidades de implementação desse método em turmas do Ensino Médio. Os resultados obtidos por meio de questionário e discussão apontam que o método Jigsaw pode propiciar uma forma mais organizada de trabalho em grupos cooperativos, uma vez que os integrantes atuam com funções específicas e imprescindíveis ao grupo; oportunizar o desenvolvimento ou aperfeiçoamento de habilidades, tais como fala, escrita, organização de ideias, resolução de conflitos de opinião; possibilitar condições de (re)significação conceitual, por meio das discussões nos distintos grupos (base e especialistas); contribuir para que os estudantes tenham um papel mais ativo no processo de aprendizagem; e estimular o papel de mediador do professor ao elaborar, organizar e desenvolver a proposta envolvendo o método.
Objeto de Aprendizagem de Números Complexos com aplicações na área técnica em eletroeletrônica
Authors: Pinto José Eustáquio , Laudares João Bosco
Published: April 2017

Neste artigo, apresentamos resultado de uma pesquisa de Mestrado, apoiada pelo Projeto de Pesquisa “Objetos de aprendizagem para o ensino de matemática na Educação Profissional Técnica de Nível Médio”, edital 13/2012, financiado pela FAPEMIG, sendo desenvolvido no período 2012/ 2016.  O Objeto de Aprendizagem, denominado “Descomplicando os complexos”, foi criado em apoio ao professor de matemática e aos estudantes do ensino médio e técnico. Foi estruturado em seis atividades, sendo as duas primeiras sem aplicações técnicas, de forma a atender estudantes do ensino médio regular, e as demais direcionadas aos cursos médios profissionais técnicos com aplicações na área eletroeletrônica. Ficou referenciado teoricamente por parâmetros da Informática Educativa, especialmente, quanto a pressupostos conceituais e metodológicos de Objeto Aprendizagem e Sequência Didática.  As atividades foram construídas com base nas representações algébricas e geométricas de pontos e vetores que representam números complexos, num contexto da interdisciplinaridade: Matemática e Eletricidade; assim os elementos dos circuitos são analisados por números complexos. Pelos resultados da aplicação experimental constatamos que a dinamicidade e interação dos estudantes proporcionadas pelo Objeto de Aprendizagem otimizaram o processo de aprendizagem.
GNSS: status, modelagem atmosférica e métodos de posicionamento
Authors: Alves Daniele Barroca Marra , Abreu Pedro Augusto Giraldes de , Souza Jéssica Saldanha
Published: April 2017

O GNSS (Global Navigation Satellite System) é cada vez mais empregado para realizar posicionamento. Além da modernização dos sistemas já existentes, como no caso do GPS (Global Positioning System) e GLONASS (Global'naya Navigatsionnaya Sputnikovaya Sistema), também existem novas iniciativas se estabelecendo, como o GALILEO e mais recentemente o Beidou/Compass. O objetivo desse artigo é apresentar o “estado da arte” desses sistemas, o status em que se encontram. Além disso, discorrer sobre os efeitos atmosféricos que influenciam na propagação dos sinais GNSS e consequentemente no posicionamento. Assunto de grande relevância, visto que o Brasil possui uma localização geográfica que prioriza tais efeitos, principalmente no que diz respeito aos efeitos ionosféricos. Por fim, descrever e apresentar resultados de diferentes métodos de posicionamento GNSS.
Avaliação do modelo de pressão e temperatura global da Universidade de Viena com dados de sensores meteorológicos no Brasil
Authors: Machado Wagner Carrupt , Fonseca Junior Edvaldo Simões da
Published: April 2017

Os sinais GNSS sofrem refração ao se propagarem pela atmosfera neutra, introduzindo o atraso troposférico, que pode chegar a cerca de 25 m, nas medidas de distância entre os satélite e o receptor. Devido às características da atmosfera neutra, é conveniente dividir o atraso troposférico em duas componentes: a hidrostática e a úmida. Modelos que requerem informações de pressão, temperatura e umidade relativa do ar, tais como o desenvolvido por Hopfield, podem ser utilizados para minimizar os efeitos desta camada da atmosfera nos sinais GNSS, sobretudo da componente hidrostática. As informações meteorológicas podem ser obtidas a partir de sensores meteorológicos, modelos de previsão numérica do tempo (PNT), redução de dados de uma atmosfera padrão ou de modelos empíricos, como o modelo de pressão e temperatura global (Global Pressure and Temperature - GPT) que foi desenvolvido na Universidade de Viena, Áustria. Dentre as opções citadas, a última se destaca devido à facilidade de uso. Esta pesquisa apresenta uma comparação entre as grandezas produzidas pelo modelo GPT com dados observados em dez estações meteorológicas automáticas (EMA) do Instituto Nacional de Meteorologia (INMET), localizadas em diferentes regiões do Brasil. Os experimentos foram conduzidos com dados do ano de 2010. Análises acerca da diferença de pressão e da diferença de temperatura mostram que o modelo GPT calcula as grandezas meteorológicas com acurácia de 4,3 hPa e 4,5 °C, respectivamente.
Controle de qualidade aplicado a dados gravimétricos
Authors: Falavigna Gabriela Pasetto , Souza Sérgio Florêncio de , Xavier Marilei Bender , Rolim Silvia Beatriz Alves
Published: April 2017

O ato de medir é, essencialmente, um ato de comparar, que envolve erros derivados dos instrumentos, do operador, dos processos de medida, etc. Os erros presentes nos dados gravimétricos se propagam na determinação do modelo do geóide, por isso a sua identificação é de fundamental importância. Os objetivos desse trabalho consistiram na integração das informações gravimétricas coletadas por três Instituições e na detecção e remoção dos possíveis erros grosseiros desse banco de dados. Das observações que constituem o banco de dados gravimétricos do Estado do Rio Grande do Sul, 2.480 vieram do IAG/USP, 950 do IBGE e 6.071 observações do IG/UFRGS. O Estudo foi dividido em três etapas: verificação de dados duplicados (primeira etapa), onde foram identificadas 225 observações; análise da distribuição geográfica dos pontos (segunda etapa), onde foram encontradas 37 observações (0,60% do banco de dados) com erro no posicionamento planimétrico; análise estatística (terceira etapa) baseada no desvio padrão dos dados, onde, na análise Global, os testes altimétricos e gravimétricos identificaram 284 pontos (4,58% do banco de dados) suspeitos de conterem erros grosseiros. Na análise Regional, os testes identificaram 256 pontos suspeitos (4,13% do banco de dados) e, na análise Local, identificaram 172 pontos suspeitos (2,77% do banco de dados), sendo que nas três análises sete (7) pontos foram identificados pelos dois testes.
Utilização de espelho de reflexão frontal aliado ao nivelamento geométrico para determinação de desnível de pontos em ambientes confinados
Authors: Da Cruz Wander , Graça Niarkios Luiz Santos de Salles , Faggion Pedro Luis
Published: April 2017

O propósito deste trabalho é avaliar a utilização de um nível geodésico em conjunto com um espelho plano de reflexão frontal na determinação de desníveis de primeira ordem em ambientes confinados. Para isso, foi definido um modelo matemático baseado no princípio da retificação de níveis, o qual consiste em determinar a inclinação aplicada ao espelho e assim projetar as leituras realizadas na mira para um plano horizontal comum a todas. A fim de se validar o modelo matemático utilizado foi realizada uma série de experimentos, nos quais se constatou a real possibilidade de utilização da técnica, pois foram encontrados erros, de no máximo 5mm, que estão associados à modelagem da atitude do espelho, sendo recomendável um estudo da relação dos erros com a atitude do espelho.
Morfologia matemática na extração de bordas de uma imagem IKONOS-2 RGB fusionada
Authors: Candeias Ana Lúcia Bezerra , Tavares Junior João Rodrigues , Oliveira do Nascimento Priscilla Heliênay , Marques de Moura Carla Julliane , Da Silva Erivaldo Antônio
Published: April 2017

As ferramentas da Morfologia Matemática são utilizadas neste artigo para extração de bordas externas em imagens de alta resolução. Um recorte de uma imagem do satélite IKONOS-2 fusionada, contendo o Lago do Cavouco, no entorno do Campus Joaquim Amazonas da Universidade Federal de Pernambuco (UFPE) é usada. Para obter a borda externa do lago, utilizou-se a implementação de dilatação e erosão e operações aritméticas do software SPRING. Comparou-se a extração de borda para cada uma das bandas da imagem RGB, também se comparou a borda obtida pela componente ‘I’ da transformação IHS e com a ‘PC1’ das componentes principais. Obteve-se os momentos, diagrama de dispersão e um perfil das imagens de borda para se comparar quantitativamente os métodos. Observou-se que a ‘PC1’ gera bordas com maior contraste.  Ressalta-se que nesta avaliação não foi tomado valores de limiares e a análise é para borda de uma imagem colorida de alta resolução.
Validação da determinação de deslocamentos relativos em barragens utilizando Topografia e Medidores Triortogonais de Junta
Authors: Graca Niarkios Luiz , Faggion Pedro Luis
Published: April 2017

O presente estudo apresenta uma metodologia para o levantamento de pontos de monitoramento, internos a galeria de inspeção, instalados junto à instrumentação de auscultação de uma barragem de concreto. A validação da determinação de deslocamentos relativos entre os blocos da barragem, derivados das observações topográficas, é feita utilizando dados oriundos dos medidores triortogonais de junta. Por conveniência, o levantamento topográfico é feito usando um referencial local, vinculado a uma rede geodésica de monitoramento, materializada através de pilares de concreto, engastados na rocha, a montante e a jusante da barragem. Para o conjunto de dados coletados e com base nos processamentos e análises realizadas, os deslocamentos determinados por técnica topográfica apresentaram magnitudes incompatíveis com os valores adotados como referencia.
Detecção de mudanças baseada em objetos para o bairro do Camorim/Jacarepaguá
Authors: Lousada Gabriel , Laeta Tainá , Penna Maria Affonso , Fernandes Manoel Couto
Published: April 2017

A detecção de mudanças baseada em objeto (Object-based Change Detection, OBCD) configura-se como uma área em grande crescimento dentro das pesquisas em Sensoriamento Remoto, isto porque, utilizando-se das possibilidades oferecidas pela análise de imagens baseada em objetos (Geographic Object-based Image Analysis, GEOBIA) é possível realizar a produção de mapeamentos de detecção de mudanças em uma única etapa, sem a necessidade da elaboração de mais de um mapa de cobertura da terra para posterior comparação entre as áreas que sofreram alterações. Partindo deste pressuposto, o presente trabalho buscou realizar um mapeamento de detecção de mudanças baseada em objetos para o bairro do Camorim em Jacarepaguá, zona oeste do município do Rio de Janeiro, entre os anos de 2011 e 2015. Os resultados obtidos indicam que 19,12% da área total do bairro sofreram modificações durante o intervalo de tempo em questão, tal resultado confirma que o bairro vem passando por grandes modificações para construção de infraestrutura dos Jogos Olímpicos de 2016. O processo de validação do mapeamento resultou em uma exatidão global de 0,80 e um índice Kappa de 0,60, considerado de boa qualidade para este tipo de mapeamento, especialmente se levado em conta sua replicabilidade para outras áreas.
Configuración del território Soacha-Bogotá D.C. a partir de los usos del sistemas masivos de transporte público y la movilidad / Configuracion of the territory Soacha-Bogotá D.C. from the uses of massive systems of public transport and mobility
Authors: Botache Daniel Molina
Published: April 2017

Este artículo pretende desarrollar los debates a nivel local y regional entorno a la cuestión urbana de la movilidad en los territorios y su impacto en el ordenamiento territorial, a partir de las tendencias de innovación e implementación de tecnologías en los sistemas de transporte público masivo e integrado, en ciudades intermedias conocidas en Colombia por su necesidad de mejoras continuas en desplazamientos urbanos, infraestructuras físicas, energéticas y tecnológicas; en el sistema económico local y prestación de los servicios de movilidad a ciudadanos. Es relevante porque en lo académico surgen propuestas de análisis e investigación, con aspectos relacionados a lo económico, político, urbano, tecnológico y ordenamiento del territorio para ciudades intermedias como es el caso de Ibagué; mientras por el lado político-institucional se hace urgente sumar esfuerzos y hallar puntos de diálogos entre los ordenadores del gasto a nivel local, territorial y nacional yla sociedad civil, ciudadanía, productores y fabricantes del sector y comunidad en general. Este trabajo se guio mediante la ruta metodológica  cuanti-cualitativa, porque inicia con las bases conceptuales y un breve estado del arte sobre el asunto de la movilidad y sistemas de transporte a modo general en Colombia; prosigue con su análisis de los tipos de sistemas de transporte y sus implicaciones (sociales e históricas) en la movilidad y territorios; para continuar con una análisis básico del cuadro estadístico sobre transporte y finaliza con la propuesta de componentes para la movilidad urbana a partir de los sistemas de transporte público e integrado. Las contribuciones están encaminadas a generar procesos de investigación social en los programas de formación desde el pregrado hasta el posgrado (Maestría y Doctorado) que le apunten al  objeto de estudios en concreto sobre movilidad y sistemas de transporte público e integrado en ciudades intermedias colombianas y su impacto en los territorios, para llevarlas a cabo en interlocución con la sociedad civil, gobernantes y ciudadanía engeneral.
Empresas públicas, fondos soberanos y enfermedad holandesa: El caso de Noruega / Public enterprises, sovereign wealth funds and Dutch disease: The case of Norway
Authors: Ramírez-Cendrero Juan M. , Wirth Eszter
Published: April 2017

Noruega es un caso de economía con abundante dotación de recursos naturales que ha escapado a la maldición de los recursos naturales y no sufre los efectos de la enfermedad holandesa. De entre todos los factores explicativos del caso noruego, se estudian fundamentalmente dos: el Fondo Gubernamental de Pensiones y la actuación de las empresas públicas, como Statoil. A partir de estos aspectos, pueden extraerse lecciones para los desafíos que enfrentan las economías subdesarrolladas ricas en hidrocarburos (como Bolivia). Particularmente, la capacidad para identificar restricciones estructurales (productivas o institucionales) de las economías subdesarrolladas, o la importancia de la persistente búsqueda de objetivos de transformación productiva a largo plazo, son aspectos esenciales para lograr un uso inteligente de los recursos naturales.
Les enjeux d’une génétique photographique
Authors: Sicard Monique
Published: April 2017

L’entreprise est neuve. Il s’agit de fournir des clés théoriques pour une meilleure compréhension de la création artistique photographique, qu’elle soit contemporaine ou passée. À partir des traces matérielles abandonnées par le processus de création, le projet vise à élaborer un nouvel objet de recherche : l’avant-image et ses étapes. L’article propose les prémices d’une génétique « photo-graphique » s’inspirant de la génétique littéraire. Il en examine les enjeux. En exhumant ce temps long de la photographie si souvent passé sous silence, l’approche réintroduit la main, le geste, le corps et le « pro-jet », soit la part humaine dans l’analyse.
Enquête sur les photomontages politiques de Marinus Jacob Kjeldgaard (1932-1940)
Authors: Byskov Gunner
Published: April 2017

Le mystère prend forme en 2003, et il a fallu un vrai travail de détective pour l’éclaircir : qui était Marinus Jacob Kjeldgaard ? Mais la réponse n’a fait naître que plus de questions : quelle fut son histoire ? Pourquoi a-t-il quitté Copenhague pour Paris ? Pourquoi est-il tombé dans l’oubli ? Marinus a commencé son travail de photomontage dans J’ai vu en 1917, a été journaliste dans les années vingt et engagé en 1932 par Gaston Gallimard pour réaliser des caricatures photographiques en guise d’éditoriaux dans l’ambitieux hebdomadaire Marianne. Il fit jusqu’à l’occupation allemande en 1940 deux cents unes de Marianne et Marianne Magazine – pour être totalement oublié pendant soixante ans. Comment fallait-il comprendre ces montages ? Ils commentaient très précisément, avec humour et finesse, les questions de politique intérieure et, avec mordant, les mouvements fascistes européens – en particulier Hitler et son rêve de dominer le monde. Marianne et Marinus ont uni leur voix contre Hitler dès 1933, seuls ou presque à le faire à cette époque en France – ce qui expliquerait pourquoi il a paru commode d’oublier ces photomontages...
L’expérience transfrontalière de Nina Bouraoui et Malika Mokeddem : à la recherche d’une départenance géographique, sexuelle et stylistique
Authors: Mansueto Claudia
Published: April 2017

Intellectuelles algériennes francophones, Nina Bouraoui et Malika Mokeddem sont deux plumes contemporaines qui bouleversent l’univers identitaire et idéologique féminin en publiant des romans à contre-courant. Ni Maghrébines ni Occidentales, les deux nomades de la littérature francophone nord-africaine déconstruisent les non-sens et les stéréotypes culturels, pour véhiculer l’idée d’une littérature liquide, mouvante et transparente comme les existences transfrontalières qu’elles défendent. À travers une approche comparatiste. Cet article propose une réflexion littéraire sur la thématique du déracinement qui caractérise la production intellectuelle des deux écrivaines.
Exode : l’identité naufragée entre displacement et nostos. Représentation littéraire de la mémoire de l’exile en Istrie et Palestine
Authors: Badr Ahmed
Published: April 2017

This article analyses and compares the experiences and the memories of traumas of the Istrian exodus in 1947 and the Arab Palestinian exodus in 1948. Beyond the diversity of accents and ideological motivations, in the field of literary production, the themes are the same i.e.: the exile, the displacement, uprooting, the sense of belonging to the lost land and the nostalgia of the return. To leave a place also leads to the loss of the identity linked to that place. In this essay, I examine the image of the exile, which lives in precarious equilibrium between two borders, without entirely belonging neither to one side or the other, and acts as a bridge between different cultures and civilizations. I would also emphasize the difference between the real national identity and the new identities built afterward, through a choice of fragments of some Italian and Arab writers, in particular Anna Maria Mori, NelidaMilani, Lina Galli, Edward Said, GhassanKanafani, Mahmoud Darwich, Emile Habibi and TawfikZayyad
Ships and Boats in James Joyce: Representing Arrested Development in the Modernist Bildungsroman
Authors: Spanghero Sara
Published: April 2017

Two major literary changes coincide between the end of the 19th century and the beginning of the 20th century : on the one hand the traditional Bildungsroman is replaced by its modernist counterpart, which features adolescent protagonists whose development into mature adults in never achieved ; on the other hand, the traditional genre of sea adventure tales is replaced by more introspective narrations, anticipating many of the aspects that will become characterising features of Modernism – in particular, the overall dystopic representation of the sea and of the aquatic element in general. In the work of James Joyce, the concurrence of these two literary transformations distinctly stands out ; from those short stories in Dubliners (1914) centred on childhood and adolescence, to the anti-developmental novel A Portrait of the Artist as a Young Man (1916) and Ulysses (1922), the marine/aquatic dimension both symbolises and determines the condition of arrested development of the young protagonists. In this article, I particularly focus on the maritime element of the ship and put in evidence how, in modernist fiction but especially for the Joycean characters, it loses its traditional rite-of-passage function.
Knowing my body, knowing myself: interpreting aborted corporeality in Annie Ernaux
Authors: Runde Holly
Published: April 2017

This paper examines the motif of abortion in the works of Annie Ernaux and the ways in which the corporeal language of her narrators leads us to an empathetic understanding of abortion as a legitimate reproductive experience within the Symbolic Order of language. I argue that as her narrators seek out the procedure of abortion that is “unintelligible” within the parameters of their world, they are subject to an epistemological injustice that is corrected through the reader’s interpretation of their experience. Abortion allows Ernaux’s narrators to regain the self-understanding that pregnancy takes away.
Inquiétante étrangeté, inquiétante familiarité à l’ère soviétique
Authors: Gruszka Sarah , Rousselet Cécile
Published: April 2017

Cet article vise à interroger le concept de « langue soviétique », souvent réduite à un objet figé, artificiel, aliénant, qui aurait assuré efficacement la diffusion et l’implantation de l’idéologie en n’offrant que peu d’espaces aux négociations narratives. L’analyse d’un corpus d’ego-documents et d’œuvres de l’écrivain Andreï Platonov suggère, au contraire, l’inefficience d’un monologisme hermétique, en révélant de véritables jeux polyphoniques à travers l’étude des modalités de réception, de réappropriation et de déconstruction du discours officiel par les individus, aussi bien dans leur expression intime que dans leur création littéraire.
Spectralités et ancêtres : traces de l'inquiétante étrangeté dans les représentations de la guerre de libération nationale au Zimbabwe
Authors: Bertho Elara
Published: April 2017

Dans Ossuaire de Chenjerai Hove, la description de la guerre de libération nationale au Zimbabwe met en jeu de nombreux personnages d’ancêtres et des êtres fantômatiques. Nous analyserons l’inquiétante étrangeté que la guerre fait advenir dans ce roman ainsi que la décomposition de la trame narrative et des personnages face à la guerre civile.
Diagnosis of del(5q) MDS, 14 years after JAK-2 positive PV appearance: complete remission of both diseases with lenalidomide monotherapy
Authors: Vaccarino Antonella , Dogliotti Irene , Marletto Fabio , Demarchi Andrea , Bazzan Mario
Published: April 2017

This is the report of the clinical case of a patient who presents the association of a JAK-2 positive chronic myeloproliferative neoplasia to a subsequent 5q- myelodysplastic syndrome, developed after about 14 years from the first diagnosis. Patient’s symptoms had rapidly worsened, and she became transfusion-dependent. Therapy with low-dose Lenalidomide quickly reduced the splenomegaly, and completely brought white cells counts, haemoglobin and platelets back to normal.  After more than one year from start, blood cell count is still normal. As far as we know this is the first case of an effective treatment with Lenalidomide reported in this clinical setting.
Metastatic Intracranial Adenoid Cystic Carcinoma with Unknown Primary: Case Report and Review of Literature
Authors: Chaturvedi Jitender , Konar Subas Kanti , Jethwani Dilip , Srinivas Dwarakanath , Mahadevan Anita
Published: April 2017

Adenoid cystic carcinoma (ACC) is an epithelial malignancy comprising approximately 8–10%of all salivary gland tumors. Intracranial ACC without a known primary is an extremely rare pathobiological event. Only 13 cases have been reported in available literature. We report a case of a rare intracranial ACC in a 35-year-old gentleman presenting with features of raised intracranial pressure. Patient had a lesion in the right parieto-occipital lobe and underwent gross total decompression. There was no evidence of any primary after a thorough systemic evaluation. In the postoperative period, he showed a good clinical improvement and was recurrence free at follow-up of 18 months. We also discuss and review the existing relevant literature.
Intraoperative Squash Smear in Central Nervous System Tumors and Its Correlation with Histopathology: 1 Year Study at a Tertiary Care Centre
Authors: Jindal Arpita , Diwan Himanshi , Kaur Kanwalpreet , Sinha V. D.
Published: April 2017

Background: Intraoperative squash smear cytology is a simple and reliable technique for rapid intraoperative diagnosis of neurosurgical specimens. The study was designed to assess the accuracy of intraoperative squash smear in the diagnosis of central nervous system (CNS) space-occupying lesions. Materials and Methods: One hundred and fifty cases of CNS space-occupying lesion were studied in a period of 15 months. Smears were prepared from the biopsy sample obtained at the time of operation and were stained with rapid hematoxylin and eosin method. Results: One hundred and forty-one cases showed complete correlation with histopathology, two cases showed partial correlation, and seven cases were discrepant. The overall diagnostic accuracy was found to be 94%. Conclusion: Intraoperative squash smear thus provides diagnosis with fair accuracy in brain tumors and is of great value in intraoperative consultation.
Clinical Profile, Outcome, and Prognostic Factors of Cortical Venous Thrombosis in a Tertiary Care Hospital, India
Authors: Banakar Basavaraj Fakkirappa , Hiregoudar Vandana
Published: April 2017

Background: Cortical venous thrombosis (CVT) is a rare condition, compared to arterial stroke and often occurs in young individuals presenting with varying clinical features. Aim: The aim is to study clinical profile and assess the outcome and prognostic factors of CVT patients. Methodology: A case series study was done for 2 years. CVT cases confirmed by magnetic resonance imaging were included in this study. Clinical presentation and risk factors were noted then patients were assessed at the time of discharge for their physical and mental status. Modified Rankin scale was used to group patients, accordingly scores 0–2 were considered as good and 3–6 as poor outcome, respectively. Data were analyzed using Chi-square test to know the association between prognostic factors and outcome. Results: Out of 81 patients, more than half of the patients were in the age group of <35 years (55.6%), and majority of patients were females (79%). Most common symptom was headache (82.7%) and least was fever (14.8%). Superior sagittal sinus was most commonly involved (74.1%). Nearly half of the patients were in puerperal period (44.1%). Patients aged more than 35 years (odds ratio [OR]: 9.1, confidence interval [CI]: 4.463–19.750) presenting with symptoms such as fever (OR: 3.442, CI: 1.088–12.140), impaired consciousness (OR: 5.467, CI: 2.064–15.330) and having clinical signs such as coma (OR: 23.99, CI, 3.844–544.1), papilledema (OR: 25.15, CI: 7.565–101.5), and with focal neurological deficit (OR: 9.366, CI: 2.693–3.41) had statistically significant poor outcome. Conclusion: Females formed a major bulk of patients. Higher number patients showed poor outcome. Study showed association between age, headache, impaired consciousness, coma, papilledema, and neurological deficit to poor outcome.
Dilated Virchow–Robin Spaces Mimicking a Brainstem Arteriovenous Malformation
Authors: Buell Thomas J. , Ramesh Arjun , Ding Dale , Raper Daniel M. S. , Chen Ching-Jen , Starke Robert M. , Mukherjee Sugoto , Crowley R. Webster
Published: April 2017

Virchow–Robin spaces (VRS) are ubiquitous and commonly observed as the resolution of magnetic resonance imaging (MRI) continues to improve. The function of VRS and the etiology of their dilation is still a subject of research. Diagnosing dilated VRS (dVRS) can be challenging because they may appear similar to other pathologies such as cystic neoplasms, infectious cysts, and even arteriovenous malformations (AVMs) on certain MRI pulse sequences. We reported a unique case of brainstem dVRS mimicking an AVM. Furthermore, the extensive pontine involvement of our patient’s lesion is rarely described in neurosurgical literature. Understanding the imaging characteristics of dVRS is critical to accurately diagnose these lesions and avoid unnecessary tests and procedures.
Mild Encephalitis with a Reversible Splenial Lesion: A Clinical Benign Condition, often Underrecognized – Clinical Case and Literature Review
Authors: Marsala Sandro Zambito , Antichi Eleonora , Pistacchi Michele , Gioulis Manuela , Candeago Rosa Maria , Montemurro Roberta Taranto , Gentile Manrico , D'Andrea Paolo , Ferracci Franco
Published: April 2017

Mild encephalitis with reversible lesion in the splenium is a clinicoradiological syndrome characterized by a variegated symptomatology with a solitary mass in the central portion of the splenium of the corpus callosum. Complete spontaneous resolution is the hallmark of this syndrome, though its pathogenesis is still unknown. We describe the clinical picture of a 51-year-old woman who developed a partial sensitive seizure, with MRI evidence of a lesion localized in the posterior portion of the corpus callosum. The patient made a full recovery thanks to the administration of antiepileptic drugs. Acquiring knowledge of this syndrome, in the wide diagnostic panel which includes vertebrobasilar diseases besides the broad range of metabolic and electrolyte disorders, is crucial to a prompt clinical diagnosis and in establishing a reliable prognosis at an early stage.