bluuebunny/crossref_metadata_2025_split huggingface dataset:
Temporal Evolution and Scaling of Mixing in Turbulent Thermal Convection for Inhomogeneous Boundary Conditions
Authors: Wei Yikun , Dou Hua-Shu , Zhu Zuchao , Wang Zhengdao , Qian Yuehong , Xue Haihong 
Published: July 2017

AbstractNumerical simulations of two-dimensional (2D) turbulent thermal convection for inhomogeneous boundary condition are investigated using the lattice Boltzmann method (LBM). This study mainly appraises the temporal evolution and the scaling behavior of global quantities and of small-scale turbulence properties. The research results show that the flow is dominated by large-scale structures in the turbulence regime. Mushroom plumes emerge at both ends of each heat source, and smaller plumes increasingly rise. It is found that the gradient of root mean-square (rms) vertical velocities and the gradient of the rms temperature in the bottom boundary layer decreases with time evolution. It is further observed that the temporal evolution of the Kolmogorov scale, the kinetic-energy dissipation rates and thermal dissipation rates agree well with the theoretical predictions. It is also observed that there is a range of linear scaling in the 2nd-order structure functions of the velocity and temperature fluctuations and mixed velocity-temperature structure function.
Two New Energy-Preserving Algorithms for Generalized Fifth-Order KdV Equation
Authors: Hong Qi , Wang Yushun , Du Qikui 
Published: July 2017

AbstractIn this paper, based on the multi-symplectic formulations of the generalized fifth-order KdV equation and the averaged vector field method, two new energy-preserving methods are proposed, including a new local energy-preserving algorithm which is independent of the boundary conditions and a new global energy-preserving method. We prove that the proposed methods preserve the energy conservation laws exactly. Numerical experiments are carried out, which demonstrate that the numerical methods proposed in the paper preserve energy well.
Screening Indigenous Australia: Space, Place and Media in Frances Calvert’s Talking Broken
Authors: Kilroy Peter 
Published: July 2017

http://dx.doi.org/10.5007/2175-8026.2016v69n2p139Drawing on the fields of postcolonial studies and media theory, this article analyzes Frances Calvert’s 1990 documentary, Talking Broken, which, inter alia, looks at the role of space, place and media amongst Australia’s ‘other’ Indigenous minority, Torres Strait Islanders. The article explores the historical and geographical complexity of the space-place-media relation (particularly in terms of the centre-periphery relations between the Torres Strait and the Australian mainland), and considers the extent to which Calvert – after the Australian bicentenary of 1988 – is able to absorb and playfully challenge such formulations. More broadly, it considers the extent to which contemporary Indigenous media might go further and enact a shift from absorbing and challenging such formulations to taking control of media institutions themselves.
Negotiation between peers: strategic device for a reading and writing program at the university level
Authors: Moyano Estela Ines , Giudice Jacqueline Viviana 
Published: July 2017

http://dx.doi.org/10.5007/2175-8026.2016v69n3p157O artigo que se segue centra-se na descrição e exemplificação de uma estratégia que é o cerne do Programa de Leitura e Escrita Acadêmicas (PROLEA, em espanhol) realizado na Universidad de Flores (UFLO), na Argentina: a "negociação entre pares profissionais" ou "negociação entre parceiros de ensino". O projeto pedagógico do Programa é baseado na evolução da Escola de Sydney em Linguística Sistêmico-Funcional (LSF). A negociação entre pares compreende o trabalho entre um professor em letramentos acadêmicos e profissionais, que é membro do Programa, e os professores de cada um dos temas específicos envolvidos. A fim de implementar com sucesso a proposta pedagógica LSF nesse nível educacional, a negociação entre colegas de profissão é necessária. Esta negociação envolve uma série de acordos entre os professores envolvidos sobre o ensino dos conteúdos curriculares através de tarefas de leitura e escrita. Primeiramente, a negociação entre pares é caracterizada e sua função e valor no Programa são destacadas; segundo, dois cenários de aplicação são apresentados a fim de mostrar a contribuição desta estratégia, bem como as suas dificuldades e o modo de resolução dos problemas encontrados.
Academic literacy and genres in university learning communities
Authors: Marinkovich Juana , Velasquez Marisol , Córdova Alejandro , Cid Carolina 
Published: July 2017

http://dx.doi.org/10.5007/2175-8026.2016v69n3p95 O estudo de gêneros textuais através de diferentes perspectivas tem contribuído para uma melhor compreensão de como a escrita desempenha um papel importante no processo de enculturação pelo qual estudantes passam ao entrar no contexto universitário. Considerando que os gêneros escritos representam as práticas específicas de disciplinas, suas diferentes formas de fazer e saber (Carter, 2007), este estudo tem como objetivo, a partir de uma abordagem qualitativa, explorar a forma como a literacia na escrita acadêmica é dirigida, de acordo com o discurso de professores e os alunos de cinco comunidades disciplinares diferentes em uma universidade chilena, com base na abordagem de cada gênero específico. Os resultados revelam que, nas comunidades abordadas, a literacia na escrita acadêmica é concebida sob duas orientações distintas: uma formativa e outra prescritiva, cada qual associada a gêneros apresentando características especialista e instrutiva, respectivamente.
Por um lugar no império: inglesidade, pertencimento negro e memória nacional em dois contos de Andrea Levy
Authors: Silva Denise Almeida 
Published: July 2017

http://dx.doi.org/10.5007/2175-8026.2017v70n1p17Este trabalho objetiva examinar a interrogação da inglesidade (Englishness) pela ficcionista britânica negra Andrea Levy a partir do lugar ocupado por ela como cidadã britânica, descendente de migrantes caribenhos negros. O questionamento é situado no quadro da construção identitária que segue ao contato dos ingleses com seus outros, especialmente no contexto da geração Windrush. Entrevistas e, sobretudo, o ensaio “Back to my own country” ajudam a dimensionar a influência da prática e pensamento racista tanto nas relações sociais e culturais quanto na invisibilização da escravidão negra na história oficial da Inglaterra. Considera-se a escrita como a forma escolhida por Levy para posicionar-se frente a essa omissão histórica, e analisam-se, como forma de exemplificar tal práxis ficcional, dois contos que visibilizam as relações entre os coloniais negros e a população hegemônica inglesa, “The polite way that English people have” e “The empty pram”.
O antropoceno e a antropo-cena pós-humana: narrativas de catástrofe e contaminação
Authors: Torres Sonia 
Published: July 2017

http://dx.doi.org/10.5007/2175-8026.2017v70n2p93Um número crescente de pesquisas sobre o humano tem tido a atenção voltada para trabalhos na área biotecnológica, em busca de uma compreensão contemporânea dos atributos humanos, tradicionalmente associados ao abstrato, ao filosófico. Não obstante seu emprego predominante e indiscutível imbricamento na área da geologia, o termo “antropoceno”, por sua vez, vem sendo usado com cada vez mais frequência por pesquisadores e profissionais das mais variadas áreas para destacar como a humanidade está mudando nosso planeta. Ao convocar o conceito de antropoceno para este trabalho, meu intuito é de sinalizar o momento não somente geológico mas histórico e cultural. A realidade subjacente ao conceito lança a humanidade em uma seara de incerteza tanto científica quanto discursiva. Com isso em mente, propõe-se discutir a cena humana (a antropo-cena) a partir da ficção especulativa, levando em conta o papel da linguagem e da representação na construção do (pós)humano, frente ao desastre, ao biopoder e à biopolítica.
Evaluación del bienestar y la salud de los docentes en centros concertados
Authors: Fernández Puig Victoria , Chamarro Lusar Andrés , Longás Mayayo Jordi , Segura Bernal Jordi 
Published: July 2017

Resumen Son poco frecuentes los estudios sobre evaluación del bienestar y de la salud de los docentes y esta evaluación requiere incluir las principales afectaciones derivadas de los riesgos específicos de la profesión docente así como los principales indicadores de bienestar en la docencia. Por ello, el objetivo del presente estudio es analizar el estado de salud de los docentes de centros concertados. Una muestra de 6208 docentes en activo de centros concertados de Cataluña contestaron el Cuestionario de Salud Docente, cuestionario específico que incluye seis factores: Agotamiento, Afectaciones de la Voz, Afectaciones Músculo-esqueléticas, Afectaciones Cognitivas, Satisfacción y Autoeficacia. Los resultados indican que un 20% de los docentes tienen una salud baja, siendo las Afectaciones Músculo-esqueléticas y las Afectaciones Cognitivas las que presentan mayor prevalencia, seguidas de Afectaciones de la Voz y Agotamiento. Un 80% de los docentes manifiestan sentirse satisfechos y competentes en su actividad docente. Se observan diferencias en función del género, nivel educativo, edad y años de docencia, siendo los docentes femeninos, de la ESO y con edades comprendidas entre 45 y 55 los que tienen un nivel de salud más bajo. De estos resultados se desprende la necesidad de mejorar las medidas preventivas organizacionales, profesionales y personales.
Early clamp release during laparoscopic partial nephrectomy: Implications for preservation of renal function
Authors: Campbell Jeffrey , Chan Garson , Luke Patrick P. 
Published: July 2017

Introduction: Intraoperative warm ischemic time (WIT), associated with hilar clamping during partial nephrectomy (PN), is an established modifiable risk factor for renal dysfunction. We assessed early clamp release (ECR) as a strategy to reduce WIT and assess its impact on renal function and bleeding.Methods: We retrospectively assessed patients who underwent minimally invasive PN by a single surgeon at our centre since December 2011. Comparing the standard technique to an ECR modification, WIT, complications, change in estimated glomerular filtration rate (eGFR), and change in differential function as demonstrated by MAG-3 nuclear renography were assessed. Followup blood work and renograms were performed at 6‒12 weeks postoperatively and compared to baseline in 70 patients (35 ECR: 35 control).Results: The ECR and control groups were similar in age, sex, and tumour size, with only patient weight being higher in the ECR group (91.6 vs. 81.6 kg; p<0.05). WIT was significantly lower in ECR group compared to control (18.8 vs. 31.5 minutes; p<0.05). Although there was no significant difference in change from baseline eGFR in the early postoperative period (Day 3) or in followup (6‒12 weeks), the control group had a significantly greater loss of ipsilateral renal function from baseline compared to the ECR group (9 vs. 4% change; p<0.05). Blood loss and complication rate weresimilar between groups.Conclusions: The ECR technique offers a safe, reproducible alternative that reduces WIT during laparoscopic PN. ECR demonstrates a reduction in overall ipsilateral renal dysfunction, without increasingcomplication or intraoperative bleeding risk.
Salvage prostatectomy for post-radiation adenocarcinoma with treatment effect: Pathological and oncological outcomes
Authors: Metcalfe Michael J. , Troncoso Patricia , Guo Charles C. , Chen Hsiang-Chun , Bozkurt Yasar , Ward John F. , Pisters Louis L. 
Published: July 2017

Introduction: Prostate biopsies following localized radiation therapy for prostate cancer often demonstrate residual prostatic carcinoma with treatment effect (CTE). The final oncological outcome of prostatic CTE is currently uncertain. We studied the pathological and oncological outcomes for a large cohort of patients who had CTE on post-radiation therapy biopsy and subsequently underwent salvage radical prostatectomy (SRP).Methods: A single-centre retrospective review of all SRPs performed from 1995‒2014 was performed. Cases were selected for this analysis if they had had a post-radiation “for-cause” biopsy. Biopsy results were compared to final pathology results following SRP. Pathological and clinical outcomes were compared by extent of treatment effect seen on the post-radiation biopsy.Results: A total of 70 patients who had salvage prostatectomy at MD Anderson Cancer Centre from 2007‒2015 met study criteria. CTE was found on biopsy in the absence of other adenocarcinoma in 16 patients. Among them, one (7%) patient had no evidence of carcinoma at the time of salvage prostatectomy, four (27%) had CTE, three (20%) had adenocarcinoma with minimal or partial treatment effect (PTE), and seven (47%) had adenocarcinoma with no treatment effect (NTE). For those with CTE on biopsy, 69% had biochemical recurrence at a median time of 0.4 years (interquartile range [IQR] 0.22‒1.52) vs. 52% for all patients (median 0.44 years, IQR 0.11‒1.70) and 47% for those with no treatment effect (median 0.62 years, IQR 0.05‒1.90). Metastasis developed after salvage prostatectomy in 11.8% of the whole cohort (8/68, median time to metastasis was 3.03 years, IQR 2.45‒4.47), 26.7% of patients with CTE (median 3.2 years, IQR 1.96‒4.44), and 6.7% of patients with NTE (median 2.45 years, IQR 0.98‒2.86). Median recurrence-free survival was 2.78 years (95% confidence interval [CI] 0.84‒5.43) for all patients, 0.51 years (95% CI 0.22‒2.35) for those with CTE, and 4.95 years (95% CI 0.95‒7.08) for those with NTE; the difference was not significant (p=0.13). On multivariate analysis, pre-SRP biopsy Gleason grade <7 (hazard ratio [HR] 0.38; 95% CI 0.14‒1.02) and number of biopsy cores positive for carcinoma (HR 1.11; 95% CI 1.00‒1.22) were significant for prediction of cancer recurrence.Conclusions: Patients undergoing salvage prostatectomy for CTE or PTE demonstrated in a for-cause biopsy after radiation therapy had pathological evidence of viable, untreated cancer in more than 50% of cases and were at significant risk of adverse pathological features. Patients with CTE may therefore benefit from salvage radical prostatectomy. Our study is limited by its retrospective nature and sample size. More studies are required to further validate our findings and assess the benefit of SRP in this population.
Prevalência de transtornos mentais comuns entre trabalhadores marítimos do Rio de Janeiro Common mental disorders prevalence among maritime workers of Rio de Janeiro
Authors: Lima da Silva Jorge Luiz , Moreno Rebecca Ferreira , Soares Rafael da Silva , De Almeida Jones Alberto , Daher Donizete Vago , Teixeira Enéas Rangel 
Published: July 2017

Objetivo: descrever a prevalência de transtornos mentais comuns entre trabalhadores marítimos. Método: trata-se de estudo transversal realizado com 316 funcionários de empresa de transporte hidroviário. A pesquisa foi aprovada no CEP sob o CAAE 0271.0.258.258-11, a coleta dos dados foi realizada em 2012. A variável transtorno mental comum foi investigada de acordo com o Self Reporting Questionnaire. Resultados: constatou-se a prevalência geral de 14,24%. Notou-se que o grupo de sintomas humor depressivo e ansioso foi o mais expressivo. Sexo feminino, renda familiar abaixo da média, alta carga horária semanal, estresse autorreferido, pensamento de abandono do emprego, categoria marinheiro de máquinas, sedentarismo e não tabagismo mostraram-se associados ao desfecho. Conclusão: é necessária a criação de projetos ocupacionais consistentes, com equipes multidisciplinares, tendo em vista a promoção da saúde e qualidade de vida no ambiente de trabalho e a redução de transtornos mentais.
Geoeffectiveness of stream interaction regions during 2007–2008
Authors: Sanchez‐Garcia E. , Aguilar‐Rodriguez E. , Ontiveros V. , Gonzalez‐Esparza J. A. 
Published: July 2017

AbstractThe stream interaction regions (SIRs) are generated in the interplanetary medium when a fast solar wind stream overtakes a slower one. If these large‐scale phenomena interact with the Earth's magnetosphere, they can give rise to geomagnetic storms (GSs). Their geoeffectivity is measured using magnetic indices at different latitudes. In this study we analyzed the geoeffectiveness of 20 GSs that were generated by SIRs during the period of 2007 to 2008 and observed by the ACE, Wind, and STEREO‐A/B spacecraft. We compared the geomagnetic response to the SIRs‐magnetosphere interaction employing different geomagnetic indices at low, middle, and high latitudes. The geoeffectiveness was 50%, 55%, and 90% using the criteria of theaa,Kp, andSYM‐Hindices, respectively. We found that in most cases the maximum intensity of each index was in the weak to moderate range. According to theSYM‐Hindex, a 10%, 60%, and 10% of the forward shocks were followed by quiet, weak, and moderate GSs, respectively. The 10% and 20%, however, were followed by minor and moderate GSs, respectively, according to theKpindex. We analyzed the geoeffective region within the SIRs with respect to the relative position of the stream interface (SI). For 75% of GSs, their maximum intensity occurred during the disturbed fast solar wind (after the passing of the SI), which would be related to the efficiency of a SIR. The time differenceΔtbetween the passing of the SI and the maximum intensity in each index was less than 36 h.
Broadband Terahertz Polarization Converter and Asymmetric Transmission Based on Coupled Dielectric‐Metal Grating
Authors: Xu Shi‐Tong , Hu Fu‐Tai , Chen Meng , Fan Fei , Chang Sheng‐Jiang 
Published: July 2017

AbstractCoupled dielectric‐metal gratings are investigated for broadband terahertz (THz) wave polarization conversion and asymmetric transmission by the experiments and numerical simulations, which are composed of the subwavelength Si grating and metallic wire grating layers. The dielectric grating layer with a large artificial birefringence and low dispersion is employed as a phase engineered waveplate, and the metal wire grating arranged with a 45° angle to the dielectric grating is utilized as a high‐efficiency polarizer. Due to the subwavelength integration, this coupled grating presents a local resonance coupling mechanism between dielectric and metal gratings, which greatly enhances the polarization rotation and expands the bandwidth, not a simple combination with dielectric and metallic gratings. The results demonstrate that a broadband asymmetric transmission with an extinction ratio of 30dB from 0.2 to 1.2 THz is achieved and the highest transmission of 90% can be obtained. It provides a simple way towards practical applications for THz artificial dispersion materials, polarization control and asymmetric transmission.
Water Oxidation by In Situ Generated [RuII(OH2)(NCNHCO)(pic)2]+
Authors: Su Wei , Zhou Kui , Cai Fanglin , Chen Cheng , Mousavi Bibimaryam , Chaemchuen Somboon , Verpoort Francis 
Published: July 2017

AbstractA dinuclear ruthenium complex [RuII(NCNHCO)(pic)2]22+ (2) was firstly prepared and characterized spectroscopically and electrochemically. Instead of the conventional ligand exchange, complex 2 dissociates in situ to afford two single‐site Ru aqua complexes, [RuII(OH2)(NCNHCO)(pic)2]+, which mediates water oxidation through proton‐coupled electron transfer events. In electrokinetic studies, complex 2 demonstrated a TOF of 150.3 s−1 comparable to those state‐of‐the‐art catalysts at neutral conditions. TONs of 2173 and 217 were attained in chemical and photochemical water oxidation when 2 was used as a catalyst, exhibiting good stability. Notably, a TOF of 1.3 s−1 was achieved at CAN‐driven water oxidation, which outperformed most of the reported single‐site Ru complexes, indicating that complex 2 is one of most active water oxidation catalysts (WOCs) to date. The unique coordination configuration and outstanding catalytic performance of complex 2 might shed light on the design of novel molecular WOCs.
Synthesis and Configuration of Neomaclafungin A
Authors: Zhu Shijun , Wu Yikang 
Published: July 2017

AbstractThe relative and absolute configuration of neomaclafungins were impossible to establish by spectroscopic analyses alone because of the lack of exploitable 1H‐1H couplings and nOes between the upper and the lower subunits. This very difficult task now is finally completed by an enantioselective total synthesis of neomaclafungin A (revised) and its diastereomer (reported). The results also provided a key reference for the complete structures for other neomaclafungins and the long‐known closely related natural product maclafungin.
Influence of the Tensor Product Model Representation of qLPV Models on the Feasibility of Linear Matrix Inequality Based Stability Analysis
Authors: Szollosi Alexandra , Baranyi Peter 
Published: July 2017

AbstractThe paper investigates and proves the statement, that the convex hull of the polytopic tensor product (TP) model representation influences the feasibility of linear matrix inequality (LMI) based stability analysis methods. The proof is based on a complex stability analysis example of a given quasi linear parameter varying (qLPV) state‐space model. Specifically, the three degree of freedom (3‐DoF) aeroelastic wing section model including Stribeck friction is used as the tool for the example model. The proof is achieved by utilizing TP model transformation and LMI based tools. As a first step, numerous TP model type control solutions holding different convex hulls are systematically derived of the qLPV model via LMI based control design methods. As a second step, each control solution is further equivalently transformed for different TP model representations holding different convex hulls. Finally, the stability of all solutions over all TP model representations are checked via LMI based stability analysis methods. As a result of the two steps, a two dimensional (2D) convex hull space is attained for the 3‐DoF aeroelastic wing section model. The two dimensions are denoted by the LMI based control design and the LMI based stability analysis for different convex hulls. Based on the numerical results, a detailed, comprehensive analysis is provided. The paper as a novelty proves the statement, that the polytopic TP model representation of a given control solution strongly influences the feasibility of LMI based stability analysis methods.