bluuebunny/crossref_metadata_2025 huggingface dataset:
Importance of the advection scheme for the simulation of water isotopes over Antarctica by general circulation models: a case study with LMDZ-iso (LMDZ5a revision 1750)
Authors: Cauquoin Alexandre , Risi Camille
Published: August 2017

Abstract. Atmospheric general circulation models (AGCMs) are known to have a warm and isotopically enriched bias over Antarctica. We test here the hypothesis that these biases are consequences of a too diffusive advection. Using the LMDZ-iso model, we show that a good representation of the advection, especially on the horizontal, is very important to reduce the bias in the isotopic contents of precipitation above this area and to improve the modelled water isotopes – temperature relationship. A good advection scheme is thus essential when using GCMs for paleoclimate applications based on polar water isotopes.
An analytical study on M2 tidal wave in the Taiwan Strait with the
extended Taylor's method
Authors: Wu Di , Fang Guohong , Cui Xinmei , Teng Fei
Published: August 2017

Abstract. The tides in the Taiwan Strait (TS) are featured by large M2 amplitudes. The extended Taylor's method is employed in this study to provide an analytical model for the M2 tide in the TS. The strait is idealized as a rectangular basin with a uniform depth, but the Coriolis and friction forces are retained in the governing equations. The observed tides at the northern and southern openings are used as open boundary conditions. The obtained analytical solution, which consists of a stronger southward propagating Kelvin wave, a weaker northward propagating Kelvin wave, and two families of Poincaré modes trapped at the northern and southern openings, agrees well with the observations in the strait. The superposition of two Kelvin waves can basically represent the observed tidal pattern, including an anti-nodal band in the central strait, and the cross-strait asymmetry (greater amplitudes in the west and smaller in the east) of the anti-nodal band. The superposition of Poincaré modes can further improve the model result in that the cross-strait asymmetry can be better reproduced. In order to explore the formation mechanism of the northward propagating wave in the TS three experiments are carried out, including the deep basin south of the strait. The results show that the southward incident wave can be reflected to form a northward wave by the abruptly deepened topography south of the strait, but the reflected wave is slightly weaker than the northward wave obtained from above analytical solution, in which the southern open boundary condition is specified with observations. The forcing at the Luzon Strait can strengthen the northward Kelvin wave in the TS, and thus is of secondary importance to the M2 tide in the TS.
Tidal influences on a future evolution of the Filchner-Ronne Ice Shelf cavity in the Weddell Sea, Antarctica
Authors: Mueller Rachael D. , Hattermann Tore , Howard Susan L. , Padman Laurence
Published: August 2017

Abstract. Recent modeling studies of ocean circulation in the southern Weddell Sea, Antarctica, project an increase over this century of ocean heat into the cavity beneath Filchner-Ronne Ice Shelf (FRIS). This increase in ocean heat would lead to more basal melting and a modification of the FRIS ice draft. The corresponding change in cavity shape will affect advective pathways and the spatial distribution of tidal currents, which play important roles in basal melting under FRIS. These feedbacks between heat flux, basal melting, and tides will affect the evolution of FRIS under the influence of a changing climate. We explore these feedbacks with a three-dimensional ocean model of the southern Weddell Sea that is forced by thermodynamic exchange beneath the ice shelf and tides along the open boundaries. Our results show regionally-dependent feedbacks that, in some areas, substantially modify the melt rates near the grounding lines of buttressed ice streams that flow into FRIS. These feedbacks are introduced by variations in meltwater production as well as the circulation of this meltwater within the FRIS cavity; they are influenced locally by sensitivity of tidal currents to water column thickness and non-locally by changes in circulation pathways that transport an integrated history of mixing and meltwater entrainment along flow paths. Our results highlight the importance of including explicit tidal forcing in models of future mass loss from FRIS and from the adjacent grounded ice sheet as individual ice stream grounding zones experience different responses to warming of the ocean inflow.
Sub-seasonal thaw slump mass wasting is not consistently energy
limited at the landscape scale
Authors: Zwieback Simon , Kokelj Steven V. , Günther Frank , Boike Julia , Grosse Guido , Hajnsek Irena
Published: August 2017

Abstract. Predicting future thaw slump activity requires a sound understanding of the atmospheric drivers and geomorphic controls on mass wasting across a range of time scales. On sub-seasonal time scales, sparse measurements indicate that mass wasting at active slumps is often limited by the energy available for melting ground ice, but other factors such as rainfall or the formation of an insulating veneer may also be relevant. To study the sub-seasonal drivers, we derive topographic changes from single-pass radar interferometric data acquired by the TanDEM-X satellite (12 m resolution). The high vertical precision (around 30 cm), frequent observations (11 days) and large coverage (5000 km2) allow us to track volume losses as drivers such as the available energy change during summer in two study regions. We find that thaw slumps in the Tuktoyaktuk coastlands, Canada, are not energy limited in June, as they undergo limited mass wasting (height loss of around 0 cm/day) despite the ample available energy, indicating the widespread presence of an insulating snow or debris veneer. Later in summer, height losses generally increase (around 3 cm/day), but they do so in distinct ways. For many slumps, mass wasting tracks the available energy, a temporal pattern that is also observed at coastal yedoma cliffs on the Bykovsky Peninsula, Russia. However, the other two common temporal trajectories are asynchronous with the available energy, as they track strong precipitation events or show a sudden speed-up in late August, respectively. The observed temporal patterns are poorly related to slump characteristics like the slump area. The contrasting temporal behaviour of nearby thaw slumps highlights the importance of complex local and temporally varying controls on mass wasting.
Aeroelastic stability of idling wind turbines
Authors: Wang Kai , Riziotis Vasilis A. , Voutsinas Spyros G.
Published: August 2017

Abstract. Wind turbine rotors in idling operation mode can experience high angles of attack within the post-stall region that are capable of triggering stall-induced vibrations. The aim of the present paper is to extend the existing knowledge on the dynamics and aerodynamics of an idling wind turbine and characterize its stability. Rotor stability in slow idling operation is assessed on the basis of nonlinear time domain and linear eigenvalue analyses. The aim is to establish when linear analysis is reliable and identify cases for which nonlinear effects are significant. Analysis is performed for a 10 MW conceptual wind turbine designed by DTU. First, the flow conditions that are likely to favor stall-induced instabilities are identified through nonlinear time domain aeroelastic simulations. Next, for the above specified conditions, eigenvalue stability analysis is performed to identify the low damped modes of the turbine. The eigenvalue stability results are evaluated through computations of the work done by the aerodynamic forces under imposed harmonic motion following the shape and frequency of the various modes. Nonlinear work characteristics predicted by the ONERA and Beddoes–Leishman (BL) dynamic stall models are compared. Both the eigenvalue and work analyses indicate that the asymmetric and symmetric out-of-plane modes have the lowest damping. The results of the eigenvalue analysis agree well with those of the nonlinear work analysis and the time domain simulations.
1804 – A População de Goiás na Transição da Mineração para a Pecuária
Authors: Oliveira Hamilton Afonso De
Published: August 2017

O presente ensaio pretende fazer uma análise do perfil da população de Goiás em princípios do século XIX, período que pode ser caracterizado como de transição da mineração para a pecuária. A o objetivo é traçar aspectos do perfil demográfico a partir dos dados do levantamento estatístico publicado em 1804, pelo então capitão Geral da Capitania de Goiás Francisco de Assis Mascarenhas e da obra Memória sobre o descobrimento, população e cousas mais notáveis da Capitania de Goyaz do Cônego Luis Antônio da Silva e Souza. A partir das informações descritas por Silva e Souza, sobre as principais características dos julgados então existentes em Goiás, os dados foram analisados a partir da atividade econômica dominante a partir das seguintes atividades: mineradora, agropastoril e mineradora/agropastoril. A análise comprovou além de aspectos peculiares da distribuição da população de cada região revelam, também, aspectos que caracterizam uma sociedade em transição mineração para a pecuária.
Na confraria e na Câmara: a correspondência entre a Irmandade do Santíssimo do Pilar do Ouro Preto e a Câmara de Vila Rica.
Authors: Oliveira Monalisa Pavonne
Published: August 2017

Neste artigo pretendemos analisar a relação estabelecida entre a Irmandade do Santíssimo Sacramento da Igreja Matriz de Nossa Senhora do Pilar do Ouro Preto com a Câmara Municipal de Vila Rica no que concerne aos auxílios prestados por parte da Câmara à irmandade, bem como o trânsito dos membros entre as duas instituições. Buscamos, assim, apresentar a articulação entre instituições que representavam diferentes instâncias, de certa forma, complementares para o período colonial, a política e a religiosa. Pois, a irmandade do Santíssimo era sediada na principal matriz da Capitania mineira, em que eram celebrados os principais eventos religiosos e políticos, e por isso, cabia à Câmara em grande parte das vezes financiá-los, como no caso da procissão de Corpus Christi. Além disso, verificamos que uma parcela considerável dos membros da confraria foram também camaristas. Desse modo, pretendemos compreender como se dava a articulação entre essas duas instituições no cenário mineiro setecentista.
A FOTOGRAFIA NA OBRA DE WALTER BENJAMIN: “DIALÉCTICA CONGELADA” E A “SEGUNDA TÉCNICA”
Authors: Silva Márcio Seligmann
Published: August 2017

O texto apresenta a teoria da fotografia de Walter Benjamin mostrando a sua relação com as teorias da fotografia de sua época assim como sua articulação com os conceitos benjaminianos de “dialética na imobilidade” e de “imagem dialética”. A sua filosofia da história é interpretada também a partir de sua ideia de que o passado deixou nos textos imagens que precisam ser reveladas por cada agora. Por fim, o ensaio analisa o conceito de “segunda técnica” que Benjamin desenvolve na segunda versão de seu trabalho sobre a obra de arte, no qual a técnica é vista como aliada ao jogo e como um meio de emancipação.
ABY WARBURG E WALTER BENJAMIN: A LEGIBILIDADE DA MEMÓRIA
Authors: Cantinho Maria João
Published: August 2017

Apenas após a década de 90, a obra de Aby Warburg foi “revisitada” por autores que fizeram um trabalho notável na sua divulgação e também na pesquisa do seu arquivo. De uma actualidade bem pertinente, os conceitos warburgianos são considerados hoje um importante marco na viragem da historiografia, sobretudo aplicada a temas como a fotografia, o cinema e a história de arte. A ideia de uma “ciência sem nome”, aludindo a uma pretensa unidade da ciência, visa uma interdisciplinaridade que é hoje um dos conceitos caros às ciências humanas. Por outro lado, Warburg partilhava com Benjamin uma historiografia ao arrepio do historicismo e de uma visão redutora da história. É precisamente a partir do conceito de imagem e da “imagem em movimento” e também da ideia de “vida póstuma das imagens” (Nachleben) que Warburg parte, para definir a abertura da historiografia.
“O NOME DESTE MUNDO DITO POR ELE PRÓPRIO”: A PALAVRA DE SOPHIA NA ENCRUZILHADA DO MODERNISMO PORTUGUÊS
Authors: Vieira Miguel Santos
Published: August 2017

Esta reflexão identifica a relação fenomenológica e histórica da presença de Sophia na encruzilhada das correntes literárias dos anos 1940 ao pós-25 Abril que acompanha o nascimento de alguns momentos altos da literatura portuguesa. Será feita uma súmula da presença de Sophia no espaço político e das letras que lhe eram contemporâneos com destaque para os principais momentos da sua intervenção cívica e política. Procura-se desatar alguns fios da encruzilhada que leva ao surgimento dos Cadernos de Poesia, onde Sophia publica pela primeira vez: o significado literário e filosófico da coincidência desta publicação com o aparecimento das Odes de Ricardo Reis; a relação temporal aqui presente e seu contraste com um tempo de modernidade que Sophia bebe de Pessoa. É nesta intersecção cultural e no contraponto com Pessoa e Píndaro que Sophia configura a imagem poética de sua escrita em que o tempo do mundo se diz a si próprio como o tempo moderno, linear, e portanto oposto a um tempo complexo, modernista, que desdobra em múltiplas temporalidades, se mobiliza e parte em várias direcções. O tempo do vivido e o tempo procurado do não-vivido.
O surgimento da imprensa política e a retórica da opinião pública na província de Goiás
Authors: Vieira Martha Victor
Published: August 2017

Este artigo analisa o conteúdo das cartas e comunicados oficiais publicados no primeiro periódico da província de Goiás, intitulado A Matutina Meiapontense (1830-1834), enfocando principalmente os sentidos atribuídos pelos letrados goianos ao conceito de opinião pública. Essas publicações, geralmente, abordavam questões concernentes ao campo político e eram dirigidas ao redator ou ao público leitor. Desde a sua criação, A Matutina divulgou diferentes posições políticas, por essa razão, o periódico se constituiu como um espaço público de crítica; conferiu visibilidade às discussões administrativas; estimulou o debate entre os leitores e agiu como um mediador de interesses entre as autoridades provinciais e a sociedade goiana.
As Ilhas Canárias: Porto estratégico nas mobilidades e transferências portuguesas durante a consolidação do mundo atlântico
Authors: Álvarez Santos Javier Luis
Published: August 2017

O objetivo desta publicação é dar a conhecer as características das relações canário-portuguesas no contexto da União Ibérica. Neste contexto, analisaremos primeiramente os antecedentes destes contactos, depois inquiriremos sobre a relevância do contingente português na sociedade canária e, em particular, sobre os vínculos mercantis que se estabelecem entre este arquipélago e os diversos territórios portugueses do Atlântico. Por último, exporemos as repercussões que teve, em Canárias, a Restauração de 1640.
The Impact of Electronic Banking Service Quality in Enhancing Performance (A study on Jordanian Commercial Banks)
Authors: AL-Adwan Abood Saleh Ahmad , AL-Tarawneh Samar Suliman
Published: August 2017

The measurement of Performance is not any more limited to standards and financial indices, it expanded to concern other aspects; for example: gaining new customers and attain their satisfaction and loyalty, and expand the market share, all of this can contribute in achieving a high rate of earnings to the bank. The sector of Jordanian commercial banks is considered one of the most vital sectors of Jordanian economy due to the volume of investment and the number of employees. This study concerns to know the impact of the E- Banking Services Quality in enhancing Performance. In that, a group of the most important E- Banking Services Quality dimensions in the electronic field has been selected to figure out its impact on Performance.This study is trying to figure out the level of the E- Banking Services Quality in Jordanian banks, also to know its impact on these banks Performance. The survey population consisted of the Jordanian commercial banks, and to achieve the study goals the researcher has developed the questionnaire to include (51) paragraph to collect the preliminary data from the survey population whereas the survey population consists of (1900) respondents. A random sample of (320) respondents has been chosen from top and middle management, in that the data has been collected and analyzed in addition to testing the hypotheses using the Statistical Package for the Social Sciences (SPSS).Keywords: Quality, performance, services Quality, E- services, E-banking services Quality, the commercial banks.
Effect of mannitol on globe and orbital volumes in humans
Authors: Weber Adam C. , Blandford Alexander D. , Costin Bryan R. , Perry Julian D.
Published: August 2017

Purpose:

To determine the effect of intravenous mannitol on globe and orbital volumes.

Methods:

Retrospective chart review of a consecutive series of Cleveland Clinic Neurosurgical Intensive Care Unit patients who underwent computed tomographic imaging before and after intravenous mannitol administration. Volume measurements were performed according to a previously described technique by averaging axial image areas. Measurements before and after mannitol administration were compared using paired t-test.

Results:

Fourteen patients (28 eyes) met inclusion criteria. Average globe volume decreased 186 mm3 (-2.5%, p = 0.02) after mannitol administration, while average orbital volume increased 353 mm3 (+3.5%, p = 0.04). Average globe volume change for subjects with follow-up scan less than 4.7 hours (mean 1.9 hours; range 0.2-4.5 hours) after mannitol administration was -125 mm3 (-1.7%, p = 0.24) and average orbital volume change was +458 mm3 (+5.1%, p = 0.11). Average globe volume change after mannitol administration for those with follow-up more than 4.7 hours (average 13.9 hours, range 4.9-24.7 hours) was -246 mm3 (-3.3%, p = 0.05) and orbital volume change was +248 mm3 (+2.2%, p = 0.24). Dividing the study population into groups based on mannitol dose did not yield any statistically significant change.

Conclusions:

Human globe volume decreases after intravenous mannitol administration, while orbital volume increases. These volume changes occur during the time period when intraocular pressure normalizes, after the pressure-lowering effects of the drug. This novel volumetric information improves our understanding of mannitol’s mechanism of action and its effects on human ocular and periocular tissues.
Algorithmic Salvage Techniques in Non-Maturing Radiocephalic Arteriovenous Fistulae with Their Long-Term Patency
Authors: Kordzadeh Ali , Panayiotopolous Yiannis P.
Published: August 2017

Introduction

The aim of this study is to examine the role of five different operative salvage techniques with their long-term primary patency (PP) in an algorithmic manner in gaining primary functional maturation (FM) in radio cephalic arteriovenous fistulae (RCAVF) formation following their impairment.

Methods

A prospective consecutive data collection on 195 patients undergoing only autogenous RCAVF formation from July 2013 to December 2015 was conducted. Each non-maturing fistula was then exposed to a salvage technique by an algorithmic methodology and their FM and PP was prospectively recorded.

Results

Forty-two patients were exposed to five different salvages techniques, with a median age of 67 years (IQR, 27-90), cephalic vein diameter of 2 mm (IQR, 1.5-4 mm) and radial artery diameter of 1.8 mm (IQR, 1.2-2.1 mm), demonstrated 63.1% FM and cumulative primary patency of 15.2 months (95% CI, 12.5-17.9) over a 21-month follow-up period.

Conclusions

Operative salvage techniques play an important role in achieving assisted functional maturation and long-term patency in RCAVF as an alternative and/or in conjunction with other minimally invasive procedures. These procedures can maximize access outcome, minimize bridging procedures, decrease complications and optimize patient anatomical resources for longer access provisions in an era of aging population.
Novel use of the ClariVein® Catheter for Pharmacomechanical Thrombolysis of Thrombosed Hemodialysis Grafts: A Case Series
Authors: Lim Darryl , Ho Derek C. , Chen Lionel , Schreve Michiel A. , Tan Yih Kai , Kum Steven
Published: August 2017

Introduction

The aim of this prospectively collected case series is to demonstrate a novel technique of using the ClariVein® catheter for pharmacomechanical thrombolysis of thrombosed hemodialysis grafts.

Methods

The analysis comprised 11 procedures in 9 patients from 1 July to 31 December 2016 in which the ClariVein catheter was used in combination with urokinase. Demographic data, procedural data, technical and clinical success rates, and complications were evaluated. The primary and secondary patency rates at 1 and 3 months were also analyzed.

Results

In the 11 procedures performed, the technical and clinical success was 100%. The mean procedural time was 66.8 minutes (range 50-90 minutes), and the mean amount of urokinase administered was 87,000 units. The primary unassisted patency rates at 1 and 3 months were 81.8% and 63.6%, respectively. The secondary patency rates at 1 and 3 months were 90.9% and 81.8%, respectively. Perforation occurred after balloon angioplasty in 1 (9.1%) of the 11 procedures, for which covered stenting was performed. No major complications occurred.

Conclusions

The combination use of the ClariVein catheter with urokinase for pharmacomechanical thrombolysis in thrombosed hemodialysis grafts is a feasible and safe method that can be performed in a relatively short duration. Our early results have shown 100% technical and clinical success. This case series serves as a platform for an upcoming prospective study to further evaluate this method.
Potential Role of a Subcutaneously Anchored Securement Device in Preventing Dislodgment of Tunneled-Cuffed Central Venous Devices in Pediatric Patients
Authors: Dolcino Andrea , Salsano Antonio , Dato Andrea , Disma Nicola , Prato Alessio Pini , Bernasconi Filippo , Montagnini Luigi , Avanzini Stefano , Bevilacqua Michela , Montobbio Giovanni , Mattioli Girolamo , Zanaboni Clelia
Published: August 2017

Introduction

The potential drawbacks of tunneled-cuffed catheters are complications such as local or systemic infection, dislodgment, rupture, malfunction, and deep venous thrombosis. Aim of this study is to describe the incidence of complications, focusing on dislodgment and on the role of new securement devices in reducing this annoying issue.

Methods

We enrolled all pediatric patients with tunneled-cuffed central venous catheters (CVCs) inserted at the Giannina Gaslini Institute during a 16-month period. Demographic data, technical details, intraoperative and postoperative complications were recorded and stored in a digital database according to Data Protection Act.

Results

During the study period, we collected 173 tunneled-cuffed CVCs. All but three insertions were successful. There were 50 complications involving 47 CVCs. Complications included 13 infections, 27 dislodgments, 4 thromboses, 3 obstructions, and 3 malfunctions/breaking. In 51 of 173 CVCs, we used subcutaneously anchored securement device (SAS).

Conclusions

The use of SAS proved to significantly reduce the incidence of complications in pediatric patients, particularly during the first 30 postoperative days. Basing on our results we suggest to routinely adopt this new securement device for high-risk CVC.
Agitation with—and of—Burke's Comic Theory
Authors: Adams Sarah Elizabeth
Published: August 2017

This article uses a lengthy critique of Kenneth Burke's Attitudes Toward History found in the Kenneth Burke Papers as well as Kenneth Burke's published writing to argue for a more expansive view of his comic theory, one that sees Burke's comic theory as a basis for ethical rhetorical engagement. Rather than defining the comic as a Burkean rhetorical device that is relevant to only a select number of texts and situations, this account of Burke's comic theory suggests it has broad applicability. Engaging Burke's comic theory as an ethic allows for active, generous, exigent, and self-reflective scholarship.
Determinação de vértices para correção automática de perspectiva
Authors: Pereira Fernando Reiszel , Filippo Denise Del Re
Published: August 2017

O uso de projetores e quadros interativos está bastante difundido em todas as esferas de ensino, do básico ao superior. Observa-se que a ampla utilização destes recursos na educação, aliada ao uso fortemente disseminado de dispositivos móveis cada vez mais poderosos, vem induzindo no meio discente o registro de aulas e exposições por meio da captura das imagens projetadas em aula. A postura clássica de copiar a aula expositiva em um caderno vem sendo rapidamente substituída pelo registro fotográfico das aulas por dispositivos móveis e notebooks. Sem entrar no mérito dos aspectos didáticos deste procedimento, é fato que este tipo de registro está estabelecido no meio educacional. Por meio de entrevistas com alunos, verificou-se que havia um desejo por parte dos mesmos (principalmente por parte daqueles afastados do centro do quadro) de fotografar os quadros e telas apresentados em aula sem a distorção por perspectiva característica deste tipo de registro. Há vários programas comerciais que corrigem esta distorção, porém a maioria requer um ajuste manual para delimitar a região da imagem que será corrigida. Neste trabalho apresenta-se um novo método para determinar automaticamente a região de interesse da imagem de um quadro a ser corrigida que, aliado a uma sequência de procedimentos e algoritmos de processamento de imagens, possibilita a automação da correção de maneira mais eficiente e precisa. A realização destes algoritmos foi inteiramente realizada na linguagem Processing, o que possibilita seu uso gratuito em diversos sistemas operacionais existentes em dispositivos móveis.
PEPCONTEXTUAL: definição de um prontuário eletrônico de paciente ciente de contexto
Authors: Oliveira William Hart , Da Costa Cristiano Andre , Righi Rodrigo Da Rosa , Ballester Dinarte Alexandre
Published: August 2017

A computação móvel pode ser definida como informação na ponta dos dedos a qualquer hora, em qualquer lugar e avança como uma realidade nas tarefas e atividades das pessoas, em decorrência da popularização e diversificação de dispositivos móveis e redes sem fio. Faz-se importante então, desenvolver modelos que permitam não somente compartilhar dados clínicos, mas sim tornar os dados independentes da tecnologia usada e cientes de contexto. Neste cenário, o presente trabalho, denominado PEPContextual, consiste em um modelo que faz uso da ciência da situação (situation awareness), explorando informações relacionadas com o ambiente ou com os próprios usuários e onde diversos tipos de contextos são aglomerados de forma a gerar uma visualização mais rica, complexa e inteligente, criando inúmeras possibilidades, dentre elas, a inferência de riscos associados ao paciente. A avaliação por estudo de caso confirmou a expectativa de que a aplicação de ciência de situação, baseada no modelo de Endsley, possibilitaria que o modelo de forma ubíqua detectasse riscos associados ao paciente.
Um mapeamento sistemático sobre o uso da comunicação aumentativa alternativa apoiada por recursos tecnológicos
Authors: Carniel Andrei , Berkenbrock Carla Diacui Medeiros , Hounsell Marcelo Da Silva
Published: August 2017

O estabelecimento da comunicação frequentemente é um problema para pessoas com deficiência intelectual. Neste sentido, a Comunicação Aumentativa e Alternativa (CAA) pode ser utilizada para apoiar a realização de um diálogo entre essas pessoas. A CAA se caracteriza por utilizar simultaneamente mais de um canal para realizar a comunicação, sendo os canais sem tecnologia, com baixa ou alta tecnologia. Neste trabalho é realizado um mapeamento sistemático, conduzido nas bases acadêmicas Science Direct, ACM e IEEE, para identificar como a CAA está sendo utilizada em conjunto com dispositivos eletrônicos. O processo de busca retornou 185 trabalhos, no entanto, apenas 39 atenderam aos critérios de inclusão e exclusão aplicados no mapeamento. Nos trabalhos analisados foi identificado maior frequência do uso do tablet como dispositivo, do alto-falante como recurso de hardware, e da imagem como forma de comunicação. Embora os trabalhos objetivavam a comunicação e educação, apenas um deles utilizou a colaboração, os demais optaram por desenvolver suas atividades individualmente.
Embora os trabalhos objetivavam a comunicação e educação, apenas um deles utilizou a colaboração, os demais optavam por desenvolver suas atividades individualmente.
Short communication: Occurrence of angular leaf spot caused by Pseudocercospora griseola in Phaseolus vulgaris in Asturias, Spain
Authors: Landeras Elena , Trapiello Estefanía , Braña Máximo , González Ana J.
Published: August 2017

Angular leaf spot (ALS) symptoms were observed in 2015 in common bean fields at four locations in Asturias, NW Spain. This disease is frequent in tropical areas and we have no record of its presence in our region, at least in the last 30 years. However, since its detection its presence in the crops has been increasing. Symptoms were necrotic spots on leaves and reddish-brown to black circular spots on pods, stems, branches and petioles. The damage observed in the mentioned crops was highly variable (between 60% and 100% affected leaves), being most severe in crops where no agrochemical treatment were applied. Three strains were selected and identified based in morphological features as Pseudocercospora griseola. The ITS region was amplified by PCR obtaining a sequence that was identical for the three isolates (Acc. No. LT222499). This sequence showed 99-100% similarity with those deposited in databases corresponding to P. griseola. To fulfill Koch's postulates, a pathogenicity test was carried out in two common bean cultivars (‘Andecha’ and ‘Maruxina’). P. griseola was re-isolated from inoculated plants and not from control plants. In cv. ‘Andecha’, chlorosis was observed in all the inoculated plants, before the appearance of spots. Consequently this is the first confirmed report of this pathogen in our region.
Staging of pulmonary metastases using dual-energy computed tomography after anti-angiogenic therapy
Authors: Altenbernd Jens-Christian , Wetter Axel , Umutlu Lale , Forsting Michael
Published: August 2017

Objective: The aim of this study was the evaluation of dual-energy computed tomography (DECT) for the assessment of pulmonary metastases (PM) after antiangiogentic therapy (AT).Material and methodology: A total of 82 patients with non-small cell lung carcinoma (NSCLC), colorectal cancer (CRC), gastrointestinal stromal tumors (GIST) and hepatocellular carcinoma (HCC) were examined before and after AT with  DECT of the lung. The number, size, CT densities (HU) of the PM were determined by 2 radiologists in consens in both DECT. The Wilcoxon sign rank test was applied (SPSS, version 21, SPSS, IBM, Chicago, USA).Results: The 82 patients (NSCLC: 32/82; CRC: 34/82; GIST: 10/82; HCC: 6/82) with a total of 201 PM were included. DECT were produced with a time interval of 4 $\pm$ 1 months. Size changes of the metastases: PM total 23 mm vs. 24 mm; p = .1/ NSCLC 22 mm vs. 23 mm; p = .2/ CRC 23 mm vs. 23 mm; p = .3/ GIST 24 mm vs. 25 mm; p = .1/ HCC 22 mm vs. 21 mm; p = .1. Contrast media in the course: PM total 45 HU vs. 25 HU; -44%; p < .05/ NSCLC 43 HU vs. 22 HU; -49%; p < .05/CRC 33 HU vs. 15 HU; -55%; p < .05/ GIST 45 HU vs. 24 HU; 47%; p < .05/HCC 62 HU vs. 43 HU; -31%, p < .05.Conclusions: The quantification of the contrast medium uptake of pulmonary metastases is valid by using dual-energy imaging. In this way, the therapy response according to antiangiogenetic therapy with regard to the contrast medium uptake can be assessed more precisely without native imaging in addition to changes in the size of the metastases.
Conversações entre a rede social twitter e os arquivos permanentes: um estudo de curadoria digital
Authors: Jorente Maria José Vicentini , Batista Lucineia Da Silva
Published: August 2017

Introdução: Curadoria Digital, em tempos pós-custodiais, convergente ao Design da Informação, propõem estratégias de curadoria e dentre as etapas a realizar, está a interação. O Twitter auxilia nessa aproximação e comunicação, facilita o compartilhamento da informação, bem como, possibilita a Curadoria de narrações de histórias.Objetivo: Apresentar iniciativas inovadoras presentes no Twitter de Curadoria Digital e o seu potencial para compartilhar informações preservadas pelos Arquivos Públicos Permanentes.Metodologia: Caracterizamos como uma pesquisa teórica e exploratória sobre a aplicação do Twitter na perspectiva da Curadoria Digital, interdisciplinar a Ciência da Informação. Foram levantados 10 Arquivos Públicos Permanentes em que verificamos sua convergência com o Twitter e, realizamos uma investigação de dois perfis de Arquivos para identificar seus conteúdos. Por fim, apresentamos iniciativas de narração de eventos históricos.Resultados: O Twitter oferece aos Arquivos a possibilidade de trabalhar narrações de eventos históricos, concomitantemente, publicar na plataforma documentos base da narração e construir acervo digital diverso do custodiado fisicamente pela instituição.Conclusões: Ações descritas na Curadoria Digital constituem uma natureza pós-custodial das atuações dos profissionais da informação nos Arquivos. Destacamos que o termo pós-custodial consiste numa categoria temporal e podemos adicionar o conceito de custódia ampliada, que não é temporal, mas de extensão.
Global Financial Crisis of Islamic and Conventional Banking in Middle East – A Case Study in Turkey
Authors: Ahmad Al-Smadi Ayman Abdal-Majeed , Almsafir Mahmoud Khalid , Mukthar Muzamri Bin
Published: August 2017

The financial tools all over the world become extremely decisive in these days. The main goal of this paper is to measure then to discuss the impact of performance of conventional and Islamic banking in Turkey during the financial crisis. some variables such as profitability, liquidity, operational efficiency and business growth are used as a measuring factor to determine the performance for both financial models. The period of study is taken during the financial crisis in 1997 and during the global financial crisis in 2007. The comparison in this study is made between the performances of Islamic banking  and conventional banking in Turkey.Some secondary data had examines in this study which was drown from the annual report from one of Turkey bank since 2002 until 2013. SPSS (Statistical Package for the Social Sciences) “18.0” has been used to compare between Islamic finance model and other model. The findings of this paper shows that Islamic financial system is performing superior than conventional financial system for the period of this study. Hence, it can be concluded that the system of Islamic banking is able to sustain and compete with the conventional banking system especially during any financial crisis.
Static Dipole Moments and Electronic Structure Calculations of the Low-Lying Electronic States of the Molecule Zinc Selinum ZnSe
Authors: Youssef Abeer , Younes Ghassan , Korek Mahmoud
Published: August 2017

Zinc selenide is a compound that has many applications in optoelectrical systems. An understanding of its properties as an individual molecule can be of great help for its use at the nanoscale. Correspondingly, twenty two lowest electronic states of ZnSe have been studied in the 2s+1Λ± representation in this paper. The potential energy curves, the harmonic frequency ɷe, the electronic energy Te, the static dipole moment and the internuclear distance re have been investigated. These calculations have been performed by using the multi-reference configuration interaction (MRCI+Q) method with Davidson correction. A very good agreement is obtained by comparing the present results with those available in literature. New electronic states have studied in the present work for the first time.
Avaliação formativa na educação: um passo para o sucesso
Authors: Costa Oséias Silva
Published: August 2017

O ato de avaliar pode determinar o estado atual de conhecimento do educando, que poderá ser útil na organização pedagógica. Para isso esta pesquisa objetivou compreender sobre a avaliação em seu aspecto formativo, realizando uma pesquisa bibliográfica, na qual foram coletadas referências sobre os aspectos legais e a avaliação formativa, em destaque sua função, frequência, aplicação, critérios de avaliação e atribuição das notas. A avaliação formativa se apresenta como um instrumento para que os educandos se apropriem dos conhecimentos que os permitam os objetivos fundamentais da educação, que é a formação de um cidadão competente.Palavras-chave: qualidade, educação, avaliação, avaliação formativa.
Sea level projections for the Australian region in the 21st century
Authors: Zhang Xuebin , Church John A. , Monselesan Didier , McInnes Kathleen L.
Published: August 2017

Sea level rise exhibits significant regional differences. Based on Coupled Model Intercomparison Project Phase 5 (CMIP5) models, sea level projections have been produced for the Australian region by taking account of regional dynamic changes, ocean thermal expansion, mass loss of glaciers, changes in Greenland and Antarctic ice sheets and land water storage, and glacial isostatic adjustment. However, these regional projections have a coarse resolution (~100 km), while coastal adaptation planners demand finer scale information at the coast. To address this need, a 1/10° near‐global ocean model driven by ensemble average forcings from 17 CMIP5 models is used to downscale future climate. We produce high‐resolution sea level projections by combining downscaled dynamic sea level with other contributions. Off the southeast coast, dynamic downscaling provides better representation of high sea level projections associated with gyre circulation and boundary current changes. The high‐resolution sea level projection should be a valuable product for detailed coastal adaptation planning.
Gas‐aerosol partitioning of ammonia in biomass burning plumes: Implications for the interpretation of spaceborne observations of ammonia and the radiative forcing of ammonium nitrate
Authors: Paulot F. , Paynter D. , Ginoux P. , Naik V. , Whitburn S. , Van Damme M. , Clarisse L. , Coheur P.‐F. , Horowitz L. W.
Published: August 2017

Satellite‐derived enhancement ratios of NH3 relative to CO column burden (
) in fires over Alaska, the Amazon, and South Equatorial Africa are 35, 45, and 70% lower than the corresponding ratio of their emissions factors (
) from biomass burning derived from in situ observations. Simulations performed using the Geophysical Fluid Dynamics Laboratory AM3 global chemistry‐climate model show that these regional differences may not entirely stem from an overestimate of NH3 emissions but rather from changes in the gas‐aerosol partitioning of NH3 to
. Differences between
and
are largest in regions where
is high, consistent with the production of NH4NO3. Biomass burning is estimated to contribute 11–23% of the global burden and direct radiative effect (DRE) of NH4NO3 (−15 to −28 mW m−2), despite accounting for less than 6% of the global source of NH3. Production of NH4NO3 is largely concentrated over the Amazon and South Equatorial Africa, where its DRE can reach −1.9 W m−2 during the biomass burning season.
Abrupt regime shifts in the North Atlantic atmospheric circulation over the last deglaciation
Authors: Löfverström Marcus , Lora Juan M.
Published: August 2017

We analyze modeling results of the North Atlantic atmospheric winter circulation from a transient climate simulation over the last 21,000 years. In agreement with previous studies, we find that the midlatitude jet stream assumes a strong, stable, and zonal disposition so long as the North American ice sheets remain in their continent‐wide Last Glacial Maximum (LGM) configuration. However, when the Laurentide ice sheet (LIS) and Cordilleran ice sheet separate (∼14,000 years ago), the jet stream abruptly changes to a tilted circulation regime, similar to modern. The proposed explanation is that the dominant stationary wave source in the North Atlantic sector changes from the LIS to the Cordilleran mountain range during the saddle collapse. As long as the LIS dominates, the circulation retains the zonal LGM state characterized by prevalent stationary wave reflection in the subtropical North Atlantic. When the Cordillera takes over, the circulation acquires its modern disposition with a weak and meridionally tilted jet stream and storm track.
Electron heating and energy inventory during asymmetric reconnection in a laboratory plasma
Authors: Yoo Jongsoo , Na Byungkeun , Jara‐Almonte J. , Yamada Masaaki , Ji Hantao , Roytershteyn V. , Argall M. R. , Fox W. , Chen Li‐Jen
Published: August 2017

Electron heating and the energy inventory during asymmetric reconnection are studied in the laboratory plasma with a density ratio of about 8 across the current sheet. Features of asymmetric reconnection such as the large density gradients near the low‐density side separatrices, asymmetric in‐plane electric field, and bipolar out‐of‐plane magnetic field are observed. Unlike the symmetric case, electrons are also heated near the low‐density side separatrices. The measured parallel electric field may explain the observed electron heating. Although large fluctuations driven by lower hybrid drift instabilities are also observed near the low‐density side separatrices, laboratory measurements and numerical simulations reported here suggest that they do not play a major role in electron energization. The average electron temperature increase in the exhaust region is proportional to the incoming magnetic energy per an electron/ion pair but exceeds scalings of the previous space observations. This discrepancy is explained by differences in the boundary condition and system size. The profile of electron energy gain from the electric field shows that there is additional electron energy gain associated with the electron diamagnetic current besides a large energy gain near the X line. This additional energy gain increases electron enthalpy, not the electron temperature. Finally, a quantitative analysis of the energy inventory during asymmetric reconnection is conducted. Unlike the symmetric case where the ion energy gain is about twice more than the electron energy gain, electrons and ions obtain a similar amount of energy during asymmetric reconnection.
On the pattern of CO2 radiative forcing and poleward energy transport
Authors: Huang Yi , Xia Yan , Tan Xiaoxiao
Published: August 2017

A set of general circulation model experiments are conducted to analyze how the poleward energy transport (PET) is related to the spatial pattern of CO2 radiative forcing. The effects of forcing pattern are affirmed by comparing the conventional doubling CO2 experiment, in which the forcing pattern is inhomogeneous, to a set of forcing homogenization experiments, in which the top of atmosphere (TOA), surface, or atmospheric forcing distribution is homogenized respectively. In addition, we separate and compare the effects of CO2 forcing to various feedbacks on atmospheric and oceanic PETs, by using a set of radiative kernels that we have developed for both TOA and surface radiation fluxes. The results here show that both the enhancement of atmospheric PET and weakening of oceanic PET during global warming are directly driven by the meridional gradients of the CO2 forcing. Interestingly, the overall feedback effect is to reinforce the forcing effect, mainly through the cloud feedback in the case of atmospheric PET and the albedo feedback in the case of the oceanic PET. Contrary to previous studies, we find that the water vapor feedback only has a weak effect on atmospheric PET. The Arctic warming amplification, which strongly affects atmospheric PET, is sensitive to the CO2 forcing pattern.
Tracking CMEs using data from the Solar Stormwatch project; observing deflections and other properties
Authors: Jones Shannon R. , Barnard Luke A. , Scott Christopher J. , Owens Mathew J. , Wilkinson Julia
Published: August 2017

With increasing technological dependence, society is becoming ever more affected by changes in the near‐Earth space environment caused by space weather. The primary driver of these hazards are coronal mass ejections (CMEs). Solar Stormwatch is a citizen science project in which volunteers participated in several activities which characterized CMEs in the remote sensing images from the Sun Earth Connection Coronal and Heliospheric Investigation (SECCHI) instrument package on the twin STEREO spacecraft. Here we analyze the results of the “Track‐it‐back” activity, in which CMEs were tracked back through the COR1, COR2, and EUVI images. Analysis of the COR1, COR2, and EUVI data together allows CMEs to be studied consistently throughout the whole field of view spanned by these instruments (out to 15 RS). A total of 4783 volunteers took part in this activity, creating a data set containing 23,801 estimates of CME timing, location, and size. We used these data to produce a catalogue of 41 CMEs, which is the first to consistently track CMEs through each of these instruments. We assess how the CME speeds, propagation directions, and widths vary as the CMEs propagate through the fields of view of the different imagers. In particular, we compare the observed CME deflections between the COR1 and COR2 fields of view to the separation between the CME source region and the heliospheric current sheet (HCS), demonstrating that in general, these CMEs appear to deflect toward the HCS, consistent with other modeling studies of CME propagation.
Neutron Reflectivity and Performance of Polyamide Nanofilms for Water Desalination
Authors: Foglia Fabrizia , Karan Santanu , Nania Manuela , Jiang Zhiwei , Porter Alexandra E. , Barker Robert , Livingston Andrew G. , Cabral João T.
Published: August 2017

The structure and hydration of polyamide (PA) membranes are investigated with a combination of neutron and X‐ray reflectivity, and their performance is benchmarked in reverse osmosis water desalination. PA membranes are synthesized by the interfacial polymerization of m‐phenylenediamine (MPD) and trimesoyl chloride (TMC), varying systematically reaction time, concentration, and stoichiometry, to yield large‐area exceptionally planar films of ≈10 nm thickness. Reflectivity is employed to precisely determine membrane thickness and roughness, as well as the (TMC/MPD) concentration profile, and response to hydration in the vapor phase. PA film thickness is found to increase linearly with reaction time, albeit with a nonzero intercept, and the composition cross‐sectional profile is found to be uniform, at the conditions investigated. Vapor hydration with H2O and D2O from 0 to 100% relative humidity results in considerable swelling (up to 20%), but also yields uniform cross‐sectional profiles. The resulting film thickness is found to be predominantly set by the MPD concentration, while TMC regulates water uptake. A favorable correlation is found between higher swelling and water uptake with permeance. The data provide quantitative insight into the film formation mechanisms and correlate reaction conditions, cross‐sectional nanostructure, and performance of the PA active layer in RO membranes for desalination.
Gram‐Scale Synthesis of Amines Bearing a gem‐Difluorocyclopropane Moiety
Authors: Nosik Pavel S. , Gerasov Andrii O. , Boiko Rodion O. , Rusanov Eduard , Ryabukhin Sergey V. , Grygorenko Oleksandr O. , Volochnyuk Dmitriy M.
Published: August 2017

The synthesis of monocyclic, spirocyclic and fused bicyclic secondary amines bearing a gem‐difluorocyclopropane moiety via difluorocyclopropanation of unsaturated N‐Boc derivatives using the trifluoromethyl(trimethyl)silane/sodium iodide [CF3SiMe3‐NaI] system is described. The relative order of the substrate reactivity is established. It is shown that for the reactive alkenes the standard reaction conditions can be used, whereas for the substrates with low reactivity, slow addition of the Ruppert–Prakash reagent is necessary.

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