bluuebunny/crossref_metadata_2025_split huggingface dataset:
A First Approach to Design Mobility Function and Noise Filter in VLC System Utilizing Low-cost Analog Circuits
Authors: Fuada Syifaul , Putra Angga Pratama , Aska Yulian , Adiono Trio 
Published: July 2017

<p class="0abstract">Visible Light Communication (VLC) as one of wireless technology must be able to offer a good capability as mobile communication system. The signal will be faded when the distance and angle of LED to photo-detector become higher at a certain distance. Other problem at VLC system is light interference noise which is caused by flicker effect from other light sources such as incandescent, fluorescent, DC-lamp (i.e. flashlight) and the sunlight. Each of lights have specific carried signal characteristics and it can influences the VLC system. In this paper we offer design of mobile VLC system based on analog domain. We use Automatic Gain Controller (AGC) circuit using commercially available IC and it will be placed at analog front-end receiver side. AGC can self-adjust its gain according to the input signal amplitude. We also design analog filter to eliminate all interferences noise spectrum which is existed under 50 KHz. We design both circuits, analog filter and AGC in VLC receiver system with low-cost. The test data are obtained through the simulation and achieved good results in ideal condition.</p>
Spectrum of Esophageal Motility Disorders in Patients with Motor Dysphagia and Noncardiac Chest Pain ‑ A Single Center Experience
Authors: Bansal Rinkesh Kumar , Nasa Mukesh , Patil Gaurav Kumar , Shah Vinit , Choudhary Narendra S. , Puri Rajesh , Sud Randhir 
Published: July 2017

ABSTRACT
Aims and Objective: High‑resolution esophageal manometry is the most important investigation for the evaluation of patients with dysphagia and noncardiac chest pain (NCCP). Chicago Classification (CC) utilizing an algorithmic approach in analyzing high‑resolution manometry has been accepted worldwide, and an updated version, CC v3.0, of this classification has been developed by the International high‑resolution manometry working Group in 2014. Data on the spectrum of esophageal motility disorders in Indian population are scarce as well as a newer version of CC has not been used to classify. The aim of our study is to evaluate clinical presentation and manometric profile of patients with suspected esophageal motility disorders using CC v3.0. Methodology: In this retrospective study, consecutive patients referred for esophageal manometry at our center from 2010 to 2015 were included in the study. High‑resolution esophageal manometry was performed with 22‑channel water‑perfusion system (MMS, The Netherlands). Newer version of CC (CC v3.0) was used to classify motility disorders. Results: A total of 400 patients were included, with a mean age of 44 years and 67.5% were males. Out of these, 60% (n = 240) patients presented with motor dysphagia while 40% (n = 160) had NCCP. Motility disorder was present in 50.5% (n = 202) of the patients while 49.5% (n = 198) patients had normal manometry. Disorders of esophagogastric junction outflow were the predominant type of disorder, found in 33.75% (n = 135). About 14.25% (n = 57) of the patients had minor disorders of peristalsis while 5% (n = 20) of the patients had other major disorders of peristalsis. Achalasia was the most common motility disorder present in 30% (n = 120) patients. Conclusion: Dysphagia was the most common esophageal symptom followed by NCCP in our series. Achalasia was the most common esophageal motility disorder followed by fragmented peristalsis.
A Third Order Adaptive ADER Scheme for One Dimensional Conservation Laws
Authors: Gu Yaguang , Hu Guanghui 
Published: July 2017

AbstractWe introduce a third order adaptive mesh method to arbitrary high order Godunov approach. Our adaptive mesh method consists of two parts, i.e., mesh-redistribution algorithm and solution algorithm. The mesh-redistribution algorithm is derived based on variational approach, while a new solution algorithm is developed to preserve high order numerical accuracy well. The feature of proposed Adaptive ADER scheme includes that 1). all simulations in this paper are stable for large CFL number, 2). third order convergence of the numerical solutions is successfully observed with adaptive mesh method, and 3). high resolution and non-oscillatory numerical solutions are obtained successfully when there are shocks in the solution. A variety of numerical examples show the feature well.
Numerical Computation of Doubly-Periodic Stokes Flow Bounded by a Plane with Applications to Nodal Cilia
Authors: Hoffmann Franz , Cortez Ricardo 
Published: July 2017

AbstractA numerical method is presented for the computation of externally forced Stokes flows bounded by the planez=0 and satisfying periodic boundary conditions in thexandydirections. The motivation for this work is the simulation of flows generated by cilia, which are hair-like structures attached to the surface of cells that generate flows through coordinated beating. Large collections of cilia on a surface can be modeled using a doubly-periodic domain. The approach presented here is to derive a regularized version of the fundamental solution of the incompressible Stokes equations in Fourier space for the periodic directions and physical space for thezdirection. This analytical expression forû(k,m;z) can then be used to compute the fluid velocityu(x,y,z) via a two-dimensional inverse fast Fourier transform for any fixed value ofz. Repeating the computation for multiple values ofzleads to the fluid velocity on a uniform grid in physical space. The zero-flow condition at the planez=0 is enforced through the use of images. The performance of the method is illustrated by numerical examples of particle transport by nodal cilia, which verify optimal particle transport for parameters consistent with previous studies. The results also show that for two cilia in the periodic box, out-of-phase beating produces considerablemore particle transport than in-phase beating.
Comprehensive Studies on Rarefied Jet and Jet Impingement Flows with Gaskinetic Methods
Authors: Cai Chunpei , He Xin , Zhang Kai 
Published: July 2017

AbstractThis paper presents comprehensive studies on two closely related problems of high speed collisionless gaseous jet from a circular exit and impinging on an inclined rectangular flat plate, where the plate surface can be diffuse or specular reflective. Gaskinetic theories are adopted to study the problems, and several crucial geometry-location and velocity-direction relations are used. The final complete results include flowfield properties such as density, velocity components, temperature and pressure, and impingement surface properties such as coefficients of pressure, shear stress and heat flux. Also included are the averaged coefficients for pressure, friction, heat flux, moment over the whole plate, and the averaged distance from the moment center to the plate center. The final results include complex but accurate integrations involving the geometry and specific speed ratios, inclination angle, and the temperature ratio. Several numerical simulations with the direct simulation Monte Carlo method validate these analytical results, and the results are essentially identical. Exponential, trigonometric, and error functions are embedded in the solutions. The results illustrate that the past simple cosine function approach is rather crude, and should be used cautiously. The gaskinetic method and processes are heuristic and can be used to investigate other external high Knudsen number impingement flow problems, including the flowfield and surface properties for high Knudsen number jet from an exit and flat plate of arbitrary shapes. The results are expected to find many engineering applications.
On the Magneto-Heat Coupling Model for Large Power Transformers
Authors: Li Xujing , Mao Shipeng , Yang Kangkang , Zheng Weiying 
Published: July 2017

AbstractThis paper studies the magneto-heat coupling model which describes iron loss of conductors and energy exchange between magnetic field and Ohmic heat. The temperature influences Maxwell's equations through the variation of electric conductivity, while electric eddy current density provides the heat equation with Ohmic heat source. It is in this way that Maxwell's equations and the heat equation are coupled together. The system also incorporates the heat exchange between conductors and cooling oil which is poured into and out of the transformer. We propose a weak formulation for the coupling model and establish the well-posedness of the problem. The model is more realistic than the traditional eddy current model in numerical simulations for large power transformers. The theoretical analysis of this paper paves a way for us to design efficient numerical computation of the transformer in the future.
The carbon cycle in the Australian Community Climate and Earth System Simulator (ACCESS-ESM1) – Part 1: Model description and pre-industrial simulation
Authors: Law Rachel M. , Ziehn Tilo , Matear Richard J. , Lenton Andrew , Chamberlain Matthew A. , Stevens Lauren E. , Wang Ying-Ping , Srbinovsky Jhan , Bi Daohua , Yan Hailin , Vohralik Peter F. 
Published: July 2017

Abstract. Earth system models (ESMs) that incorporate carbon–climate feedbacks represent the present state of the art in climate modelling. Here, we describe the Australian Community Climate and Earth System Simulator (ACCESS)-ESM1, which comprises atmosphere (UM7.3), land (CABLE), ocean (MOM4p1), and sea-ice (CICE4.1) components with OASIS-MCT coupling, to which ocean and land carbon modules have been added. The land carbon model (as part of CABLE) can optionally include both nitrogen and phosphorous limitation on the land carbon uptake. The ocean carbon model (WOMBAT, added to MOM) simulates the evolution of phosphate, oxygen, dissolved inorganic carbon, alkalinity and iron with one class of phytoplankton and zooplankton. We perform multi-centennial pre-industrial simulations with a fixed atmospheric CO2 concentration and different land carbon model configurations (prescribed or prognostic leaf area index). We evaluate the equilibration of the carbon cycle and present the spatial and temporal variability in key carbon exchanges. Simulating leaf area index results in a slight warming of the atmosphere relative to the prescribed leaf area index case. Seasonal and interannual variations in land carbon exchange are sensitive to whether leaf area index is simulated, with interannual variations driven by variability in precipitation and temperature. We find that the response of the ocean carbon cycle shows reasonable agreement with observations. While our model overestimates surface phosphate values, the global primary productivity agrees well with observations. Our analysis highlights some deficiencies inherent in the carbon models and where the carbon simulation is negatively impacted by known biases in the underlying physical model and consequent limits on the applicability of this model version. We conclude the study with a brief discussion of key developments required to further improve the realism of our model simulation.
Decadal oxygen change in the eastern tropical North Atlantic
Authors: Hahn Johannes , Brandt Peter , Schmidtko Sunke , Krahmann Gerd 
Published: July 2017

Abstract. Repeat shipboard and multi-year moored observations obtained in the oxygen minimum zone (OMZ) of the eastern tropical North Atlantic (ETNA) were used to study the decadal change in oxygen for the period 2006–2015. Along 23° W between 6 and 14° N, oxygen decreased with a rate of −5.9 ± 3.5 µmol kg−1 decade−1 within the depth covering the deep oxycline (200–400 m), while below the OMZ core (400–1000 m) oxygen increased by 4.0 ± 1.6 µmol kg−1 decade−1 on average. The inclusion of these decadal oxygen trends in the recently estimated oxygen budget for the ETNA OMZ suggests a weakened ventilation of the upper 400 m, whereas the ventilation strengthened homogeneously below 400 m. The changed ventilation resulted in a shoaling of the ETNA OMZ of −0.03 ± 0.02 kg m−3 decade−1 in density space, which was only partly compensated by a deepening of isopycnal surfaces, thus pointing to a shoaling of the OMZ in depth space as well (−22 ± 17 m decade−1). Based on the improved oxygen budget, possible causes for the changed ventilation are analyzed and discussed. Largely ruling out other ventilation processes, the zonal advective oxygen supply stands out as the most probable budget term responsible for the decadal oxygen changes.
Toward a Social Justice Model for an EdD Program in Higher Education
Authors: George Phillis 
Published: July 2017

Evaluative in nature, this article includes an initial examination of a doctoral program uniquely designed to prepare higher education administrators and practitioners to be socially just and equity-minded leaders. The program emphasizes the integration of equity, social justice, and ethics into professional practice. As such, this article utilizes a social justice, leadership framework. Originally designed in 2006 by Colleen Capper, GeorgeTheoharis, and James Sebastian to prepare secondary administrators for social justice leadership, the framework assists with the enclosed evaluation of a program that prepares postsecondary administrators for social justice leadership. The article delineates the effectiveness of the program’s implementation and the extent to which the program’s goals, curriculum, and pedagogy align with components of the framework. The program has been chosen because of its commitment to addressing socio-economic and educational attainment disparities in higher education through the focused teaching and professional development of academic and student affairs personnel.
After the Avant-Gardes
Authors: Camplin Troy 
Published: July 2017

Abstract
The author reviews After the Avant-Gardes: Reflections on the Future of the Fine Arts, edited by Elizabeth Millán, and agrees with many of its contributors that avant-garde art and totalitarianism are based on the same worldview. The author views this collection as a brilliant critique of the avant-garde, which might provide a way to transcend its deeply dehumanizing effects.
Rejoinder to Merlin Jetton: Conditions of Volition
Authors: Bissell Roger E. 
Published: July 2017

Abstract
The author shows that Peikoff hasn't deviated from official Objectivism on volition, that he advocates the same view Rand endorsed in 1976. He challenges Objectivism's claim that the choice to focus is the ultimate ground of other choices, instead arguing that the choice to focus rests on one's preference to be oriented toward reality, and that this preference precedes every deliberate decision to focus. The author insists that the cause of choices between alternatives is not a free-floating choice to focus, but the strongest preference at the time of each choice, that part of oneself (value) that determines one's action.
(NOTA DE PESQUISA) ESTUDO DE CASO: TEMPERATURA MÉDIA MENSAL DE REGIÕES DO LITORAL E SEMIÁRIDO DO NORDESTE BRASILEIRO (CASE STUDY: MONTHLY MEAN TEMPERATURE OF COASTAL AND SEMI-ARID REGIONS OF NORTHEASTERN BRAZIL)
Authors: Silva Francisca de Fátima Nascimento , Gomes Ana Carla Dos Santos , Lucio Paulo Sérgio , Araújo Eduardo Henrique Silveira , Silva Cláudio Moisés Dos Santos 
Published: July 2017

RESUMOResultados de estudos realizados com variáveis climáticas através das técnicas de Análise de Séries Temporais e da Transformada Wavelet são apresentados neste trabalho. Os dados analisados foram dados de reanálises do Centro Nacional para Previsões Ambientais - NCEP que envolve as regiões do Litoral e do Semiárido do nordeste brasileiro (NEB) a um nível de pressão de 850 milibar (mbar). A série temporal analisada representa as posições de latitude 5º e 7º e longitude 35º e 32,5º para o Litoral e as posições de latitude 5º e 7º e longitude 35º e 37,5º para o Semiárido, o ponto representativo está a 5s e -35w, estes valores estão no nível geográfico de Natal (Litoral) e interior do Estado do RN para as análises climatológicas de temperatura (°C). As séries temporais analisadas contêm os dados do período de 1964 a 2009. O objetivo desse estudo será identificar mais detalhadamente padrões temporais, intensidades e periodicidade de oscilações da temperatura mensal e anual para as regiões do Litoral e Semiárido do nordeste brasileiro, fazendo-se uso da aplicação da Transformada Wavelet contínua de Morlet para diferentes escalas de tempo e identificando picos dominantes na variabilidade sazonal, bem como a identificação de variabilidades intra e inter anual, ao longo das séries em estudo. Outro ponto importante é o de apresentar os resultados da aplicação da técnica de Análise de Séries Temporais para identificar tendências e sazonalidades no comportamento das séries em estudo e fazer projeções analisando-as e relacionando-as com os resultados das relações tempo-escala.
ANÁLISE DA PRECIPITAÇÃO PLUVIAL NA BACIA DO PARANAPANEMA
Authors: Nery Jonas Teixeira , Carfan Ana Claudia , Parizotto Tatiana Mascari 
Published: July 2017

O objetivo deste trabalho foi estudar a variabilidade pluviométrica na bacia hidrográfica do rio Paranapanema, analisando anomalias das chuvas ao longo de um período climatológico, assim como a relação dessa variável meteorológica com os períodos de ocorrência dos fênomenos El Niño e La Niña e sua variabilidade espacial. Os dados de precipitação de 1975 a 2004 foram retirados do site da Agência Nacional de Águas (ANA). Foram escolhidas 96 estações ao longo da bacia hidrográfica dos Estados de São Paulo e Paraná e realizadas análises estatísticas (média, desvio-padrão, coeficientes de variação e amplitude) visando comparar os padrões climatológicos durante períodos chuvosos e secos, respectivamente, no intervalo de estudo deste trabalho. Calcularam-se as anomalias anuais, as quais foram relacionadas aos períodos de El Niño e La Niña mais intensos. A partir da análise de componentes principais e análise de cluster foram definidas áreas homogêneas dentro da bacia. Por se tratar de um método subjetivo de classificação, optou-se por estabelecer cinco regiões com características diferenciadas dentro da área de estudo. Assim, de acordo com as estatísticas realizadas, a precipitação pluvial apresenta significativa variabilidade na área de estudo, com invernos secos e verões chuvosos. A bacia apresenta, em períodos de ocorrências dos fenômenos El Niño e La Niña, variabilidade pluviométrica espacial e temporal bem marcadas para alguns eventos.
COMPARAÇÃO ENTRE A NORMAL CLIMATOLÓGICA DE 1961-1990 E O PERÍODO 1991-2007 PARA A PRECIPITAÇÃO NA CIDADE DE MANAUS-AM
Authors: Mascarenhas Junior Tongaté Arnaud , Saraiva Jaci Maria Bilhalva , Aguiar Francisco Evandro Oliveira 
Published: July 2017

Este trabalho tem como objetivo fazer a comparação entre a Normal Climatologica 1961-1990 e o período de dados subseqente, de 1991-2007, que corresponde a 17 anos de dados, a fim de verificar possíveis modificações nos valores médios, tendo como base o parâmetro precipitação para a cidade de Manaus, localizada na Amazônia Central. O período 1991-2007 foi analisado de duas formas: foi subdividido em dois (1991-2000 e 2001-2007) para uma análise setorial dos períodos e posteriormente reunificado para as considerações finais. Foram utilizados dados das planilhas diárias fornecidas pelo Instituto Nacional de Meteorologia - INMET. No período 1991-2007 foram também identificados episódios de precipitação acima de 30 mm diários, separados em duas faixas de análise para fins metodológicos: entre 30 e 49 mm, convencionados medianos para este trabalho; e acima de 50 mm, que podem ser considerados severos de acordo com alguns fatores, como a duração do episódio e o impacto que este causou no ambiente atingido. Eventosde grande escala como El Niño e La Niña foram identificados neste último período e tiveram certa influência em alguns anos. Os resultados apresentados nesse trabalho mostram que 47,2% dos dias do período foram chuvosos e destes, 12,65% apresentaram precipitação igual ou superior a 30 mm diários. Também foram verificadas modificações dos meses mais chuvoso e mais seco na comparação entre a Normal Climatologica 1961-1990 e o período 1991-2007 e diminuição dos dias de chuva totais na verificação ano a ano. No período 1991-2007 nenhum ano apresentou mais de 200 dias de chuvas, o que aconteceu por várias vezes no periodo da Normal. Porém, neste caso específico, não se pode descartar a possibilidade de falhas nos dados.
Origin of primitive ocean island basalts by crustal gabbro assimilation and multiple recharge of plume‐derived melts
Authors: Borisova Anastassia Y. , Bohrson Wendy A. , Grégoire Michel 
Published: July 2017

AbstractChemical Geodynamics relies on a paradigm that the isotopic composition of ocean island basalt (OIB) represents equilibrium with its primary mantle sources. However, the discovery of huge isotopic heterogeneity within olivine‐hosted melt inclusions in primitive basalts from Kerguelen, Iceland, Hawaii and South Pacific Polynesia islands implies open‐system behavior of OIBs, where during magma residence and transport, basaltic melts are contaminated by surrounding lithosphere. To constrain the processes of crustal assimilation by OIBs, we employed the Magma Chamber Simulator (MCS), an energy‐constrained thermodynamic model of recharge, assimilation and fractional crystallization. For a case study of the 21–19 Ma basaltic series, the most primitive series ever found among the Kerguelen OIBs, we performed sixty‐seven simulations in the pressure range from 0.2 to 1.0 GPa using compositions of olivine‐hosted melt inclusions as parental magmas, and metagabbro xenoliths from the Kerguelen Archipelago as wallrock. MCS modeling requires that the assimilant is anatectic crustal melts (P2O5 ≤ 0.4 wt.% contents) derived from the Kerguelen oceanic metagabbro wallrock. To best fit the phenocryst assemblage observed in the investigated basaltic series, recharge of relatively large masses of hydrous primitive basaltic melts (H2O = 2–3 wt%; MgO = 7–10 wt.%) into a middle crustal chamber at 0.2 to 0.3 GPa is required. Our results thus highlight the important impact that crustal gabbro assimilation and mantle recharge can have on the geochemistry of mantle‐derived olivine‐phyric OIBs. The importance of crustal assimilation affecting primitive plume‐derived basaltic melts underscores that isotopic and chemical equilibrium between ocean island basalts and associated deep plume mantle source(s) may be the exception rather than the rule.