bluuebunny/crossref_metadata_2025 huggingface dataset:
Производящая функция для скалярных произведений в алгебраическом анзаце Бете
Authors: Slavnov Nikita Andreevich
Published: September 2020

Построено семейство детерминантных представлений для скалярных произведений векторов Бете в моделях с $\mathfrak{gl}(3)$-симметрией. Данное семейство задается одной производящей функцией, которая содержит произвольные комплексные параметры, но не зависит от их конкретных значений. Выбирая эти параметры различным образом, можно получить различные детерминантные представления.
Расширение дискретной иерархии Кадомцева-Петвиашвили и ее строгой версии
Authors: Helminck Gerard F , Poberezhny Vladimir Andreevich , Polenkova Svetlana Vladimirovna
Published: September 2020

Доказано, что и дискретная иерархия Кадомцева-Петвиашвили, и ее строгая версия могут быть расширены до более широкого класса деформаций, которые удовлетворяют более общему набору уравнений Лакса. Доказано, что обе расширенные иерархии обладают соответствующими линеаризациями, позволяющими геометрически построить решения этих расширенных иерархий.
Sharp large deviations for the drift parameter of the explosive Cox-Ingersoll-Ross process
Authors: du Roy de Chaumaray Marie
Published: September 2020

В статье рассматривается взрывной процесс Кокса-Ингерсолла-Росса. Устанавливается резкий принцип больших уклонений для оценки максимального правдоподобия параметра сноса.
On the sub-Gaussianity of the $r$-correlograms
Authors: Giuliano Rita , Ordonez Cabrera Manuel H , Volodin Andrei Igorevich
Published: September 2020

Устанавливается, что центрированная реле-коррелограмма (relay correlogram function) является субгауссовской случайной величиной. Доказательство осуществляется посредством анализа преобразования Лапласа и оценки субгауссовского штандарта $r$-коррелограмм.
О сложности и размерности непрерывных конечномерных отображений
Authors: Darkhovsky Boris Semenovich
Published: September 2020

Введено понятие $\varepsilon$-сложности индивидуального непрерывного конечномерного отображения. Это понятие согласуется с основной идеей А. Н. Колмогорова об измерении сложности объектов. Установлено, что $\varepsilon$-сложность "почти любого" гeльдерова отображения допускает эффективное описание. Это описание может быть основой для безмодельных технологий сегментации и классификации данных произвольной природы. Предложено также новое определение размерности графика отображения.
Фундаментальная теорема формирования цен финансовых активов в непрерывном времени для больших финансовых рынков с двумя фильтрациями
Authors: Cuchiero Christa , Klein I , Teichmann J
Published: September 2020

Приводится удивительно простая версия фундаментальной теоремы формирования цен финансовых активов (fundamental theorem of asset pricing, FTAP) в непрерывном времени для больших финансовых рынков с двумя фильтрациями в $L^p$-постановке для $ 1 \leq p< \infty$. Это распространяет результаты Ю. М. Кабанова и К. Стрикера (2006) на непрерывное время и на постановку с большим финансовым рынком, в то же время сохраняя простоту постановки в дискретном времени. С другой стороны, это обобщает $L^p$-версию FTAP Стрикера (1990) на постановку с двумя фильтрациями. Мы не предполагаем ни то, что процесс цен является семимартингалом (и этого не надо делать, поскольку при торговле используется только информация, связанная с меньшей фильтрацией), ни то, что процесс цен имеет какие-то свойства траекторий, а также нам не нужны никакие особенные свойства двух рассматриваемых фильтраций и никакая допустимость процесса стоимости портфеля. Тем не менее, мы получаем вполне общий (и реалистичный) результат, в котором стратегии торговли предсказуемы только по отношению к меньшей фильтрации, а не по отношению к фильтрации, порожденной процессом цен. Приложения охватывают моделирование торговли с задержкой информации, торговли на разных временных интервалах, работу с неточной информацией о ценах и подходы к неопределенности на основе рандомизации, которые будут рассмотрены в другом месте.
MATEMATİKSEL YETKİNLİK ALGI ÖLÇEĞİNİN GELİŞTİRİLMESİ: GEÇERLİK VE GÜVENİRLİK ÇALIŞMASI
Authors: ABAY Sinem , BULUÇ Bekir
Published: September 2020

Bu çalışma, sınıf öğretmeni adaylarının matematiksel yetkinlik algılarını ortaya çıkarabilecek bir ölçek geliştirmeyi amaçlamaktadır. Bu amaçla farklı devlet üniversitelerinin sınıf eğitimi anabilim dalında öğrenim göre 2019-2020 güz dönemi 4. Sınıf öğrencileri ile çalışılmıştır. Uygulamada kullanılan Matematiksel Yetkinlik Algı Ölçeği araştırmacı tarafından geliştirilmiş belirli işlemlerin ardından geçerlik ve güvenirlik işlemlerine tabi tutulmuştur. 440 sınıf öğretmeni adayı ile yapılan uygulama sonucunda ölçeğin güvenirlik katsayısı (Cronbach’s Alfa) 0.94 olarak bulunmuş ve yüksek güvenirlik değerine sahip olduğu görülmüştür. Açımlayıcı faktör analizi sonuçlarına göre Kaiser-Mayer-Olkin (KMO) değerinin 0,941 ve Bartlett Küresellik Testi değerinin ise p<0,05 düzeyinde p=0,000 anlamlı bulunduğu görülmektedir. Bununla birlikte madde faktör yükleri üç boyut altında toplanmış ve faktörlerin varyansa katkısı %50 olarak bulunmuştur. Açımlayıcı faktör analizi sonucunda birinci alt boyut altında 14 madde, ikinci alt boyut altında 11 madde ve üçüncü alt boyut altında 5 madde toplanmıştır. 46 madde ile açımlayıcı faktör analizine tabi tutulan ölçek 30 maddeye düşmüş ve doğrulayıcı faktör analizi yapılmıştır. Yapılan doğrulayıcı faktör analizi sonucunda ise birinci alt boyut altında 8 madde, ikinci alt boyut altında 5 madde ve üçüncü alt boyut altında 11 madde toplanmıştır. Doğrulayıcı faktör analizi sonucunda elde edilen uyum indeks değerlerinin kabul edilebilir uyum gösterdiği görülmüştür.
A generalized linear model for multivariate correlated binary response data on mobility index
Authors: UDDIN MD NAZIR , BEGUM MUNNI
Published: September 2020

Dependence in multivariate binary outcomes in longitudinal data is a challenging and an important issue to address. Numerous studies have been performed to test the dependence in binary responses either using conditional or marginal probability models. Since the con- ditional and marginal approach provide inadequate or misleading results, the joint models based on both are implemented for bivariate correlated binary responses. In the current paper, we consider a joint modeling approach and a generalized linear model (GLM) for tri-variate correlated binary responses. The link function of the GLM is used to test the dependence of response variables. The mobility index with two categories, no difficulty and difficulty, over the duration of three waves of Health and Retirement Survey (HRS) is chosen as the binary response variable. Initial analysis with Marshall-Olkin correlation coefficients and logistic regression coefficients provide moderate correlation in mobility indices implying dependence in the response variables. We also found statistically significant dependence among the response variables using the joint modeling approach. The mobility at current wave not only depends on the previous mobility status, but also depends on covariates such as age, gender, and race.
Reformas de educación superior en búsqueda de la democracia Inter-cultural y la descolonización de la universidad
Authors: Lao-Montes Agustín
Published: September 2020

En los límites de mi presentación he de tratar tres temáticas entrelazadas: primero el vinculo entre interculturalidad, educación superior y democracia sustantiva; segundo los Estudios Afrodescendientes o Afrodiaspóricos como prácticas y espacios para la descolonización de la universidad; y la tercera la voy a denominar como el cultivo de la Pluriversalidad en aras de reformas radicales en la educación superior.
EXAMINING THE EFFECTS OF FINANCIAL FACTORS ON PROFITABILITY OF GENERAL INSURANCE COMPANIES IN KENYA
Authors: Ngunguni Joseph Nthuli , Misango Dr Sedina , Onsiro Dr. Martin
Published: September 2020

Purpose: The objective of this study was to examine the financial factors which affect the profitability of general insurance companies in Kenya. The profitability in this study is represented by ROA, as dependent variable for the period 2013 to 2017. Independent variables in this study were liquidity, leverage, loss ratio and expenses ratio.

Methodology: The type of research design used in this study was both descriptive as well as referential analysis. The study applied a census procedure to study all the 28 general insurance companies and targeted the entire population of 28 companies. Secondary data was collected from individual annual published financial statements of 28 general insurance companies for 5 years; 2013 to 2017, AKI reports and IRA published annual reports. A collection data sheet was used to collect the relevant data from all the 28 general insurance companies. After the data was collected and sorted, it was analyzed using referential analysis (multiple regression analysis). This was assisted by SPSS (Version 20) software.

Findings: The study revealed that the regression coefficient of loss ratio was -0.068, t-statistics -0.415 and p-value of 0.682 while that of leverage ratio was -0.048, t-statistics -0.546 and p-value of 0.590. Liquidity ratio had a regression coefficient of 4.238, t-statistics 3.257 and p-value of 0.003 while expenses ratio had a regression coefficient of -0.281, t-statistics -3.840 and p-value of 0.001.

Unique contribution to theory, practice and policy: The study recommends that the management of general insurance companies in Kenya need to address liquidity and expenses by minimizing expenses and maximizing liquidity in order to be on the safe side as far as profitability is concerned. The study also recommends that regulators and other stakeholders, within the industry, should at regular interval intensify efforts to ascertain the claims handling procedures currently in use by insurance companies in Kenya.
Ocorrências típicas de fotografias relacionadas à violação dos direitos humanos das ditaduras militares Latino-Americanas
Authors: Di Pietro Laila Figueiredo
Published: September 2020

Objetivo: identificar as funções da fotografia nesses períodos, no Brasil, Chile e Argentina, a fim de reforçar a necessidade da compreensão do documento fotográfico como ferramenta para a justiça e do desenvolvimento de instrumentos de organização de acervos que garantam a manutenção das propriedades desse tipo de documento.Método: Foi realizado um levantamento de ocorrências de termos relacionados à fotografia nos relatórios produzidos pelo projeto Brasil Nunca Mais e por comissões da verdade dos países estudados e analisadas as transcrições de depoimentos. Ademais, foram inseridos outros exemplos de ocorrência de fotografias no contexto analisado para complementar a lista de funções, que foi classificada e apresentada como resultado não exaustivo dessas ocorrências.Resultado: As 26 funções identificadas demonstram que a fotografia foi utilizada como produto administrativo, foi arma de oposição política e ideológica que reforçou a posição da imprensa, foi um recurso na busca e na denúncia de organizações de familiares de vítimas, foi utilizado por militantes para identificação de torturadores e para a produção de documentação falsa, foi e segue sendo prova apresentada em comissões da verdade e julgamentos, registrou e registra o trabalho das instituições de defesa dos direitos humanos e atua como ferramenta política e artística.Conclusões: Espera-se que, cada vez mais, a fotografia seja compreendida como parte integrante dos acervos que contribuem para os processos de justiça de transição.
Estado da arte dos marcos regulatórios brasileiros rumo à Ciência Aberta
Authors: Rezende Laura Vilela Rodrigues , Falgueras Ernest Abadal
Published: September 2020

Objetivo: Apresentar um panorama brasileiro acerca de marcos regulatórios que influenciam diretamente a prática da Ciência Aberta considerando a esfera governamental, institucional e das agências de fomento.Método: Estudo descritivo e exploratório com abordagem qualitativa.Resultado: As análises estão divididas em dois blocos: o primeiro com marcos regulatórios jurídicos brasileiros provenientes de instituições governamentais, que totalizam seis (6) normativas com tópicos referentes à transparência e abertura de dados, atos e do fazer científico; o segundo bloco traz marcos regulatórios provenientes das instituições científicas totalizando vinte e seis (26) políticas, uma (1) de agência de fomento e quatro(4) normativas de instituições provedoras de produtos e serviços em informação.Conclusões: Conclui-se que o Brasil tem trilhado seu caminho de maneira singular e de destaque uma vez que a abertura do fazer científico está em uma fase considerada transitória, consolidando o movimento de Acesso Aberto e inaugurando a Ciência Aberta, tendo o governo como agente essencial para esta implementação.
Gestión del conocimiento y capital social en la universidad. El caso de la Facultad de Comunicación de la Universidad de La Habana
Authors: Medina González Viena , Almansa Martínez Ana , León Santos Magda , Torres Ponjuán Deborah
Published: September 2020

Objetivo: o objetivo deste estudo é propor o processo de gestão do conhecimento na Faculdade de Comunicação da Universidade de Havana, a partir das potencialidades de seu capital social. Esta com o objetivo de promover as ações de criação e divulgação de conhecimento na Faculdade e em articulação com outras entidades, bem como a sua utilização e exploração.Método: a pesquisa é descritiva-analítica com abordagem mista. A análise de conteúdo e a triangulação metodológica foram desenvolvidas como método de análise dos dados obtidos por meio da pesquisa, da entrevista e do grupo de discussão. A matriz SWOT foi utilizada como ferramenta auxiliar para o diagnóstico e organização dos resultados.Resultado: foi finalizada uma proposta de gestão do conhecimento com base no planejamento estratégico, traçando ações de trabalho que visam relacionar os processos gerais da entidade através do conhecimento organizacional e os elementos de capital social identificados.Conclusões: A gestão do conhecimento é relevante no contexto estudado e na necessidade de promoção de capital social que media a troca de conhecimento nos processos organizacionais. Primeira proposta de gestão do conhecimento baseada em seu capital social. Pesquisa pioneira no contexto cubano onde as duas variáveis de análise se relacionam no contexto universitário.
Pela complementaridade de abordagens linguístico-enunciativas, referenciais e polifônicas para o estudo de textos narrativos
Authors: Cunha Gustavo Ximenes
Published: September 2020

Neste artigo, evidenciamos que as abordagens linguístico-enunciativas, referenciais e polifônicas propostas no interior dos Estudos da Linguagem para a compreensão da narrativa devem ser entendidas como complementares e igualmente necessárias à formação do professor de línguas e do linguista do texto e do discurso. Afinal, a complexidade de um texto narrativo apenas se deixa apreender mediante a consideração conjunta dos aspectos linguístico-enunciativos, referenciais e polifônicos que entram em sua composição. Para revelarmos a pertinência dessa articulação de abordagens, partimos de uma breve apresentação de algumas abordagens linguístico-enunciativas, referenciais e polifônicas propostas para a compreensão da narrativa. Em seguida, à luz dos conceitos propostos nessas abordagens, defenderemos o interesse dessa articulação por meio da análise do capítulo de abertura do romance “Dom Casmurro”, de Machado de Assis.Análise textual; Narrativa; Abordagens linguístico-enunciativas, referenciais e polifônicas
O padrão frasal [trem + adjetivo] sob a perspectiva da gramática de construções
Authors: Duchowny Aléxia Teles , Soares Paola Santos Lima
Published: September 2020

Este artigo examina o padrão frasal [trem + adjetivo], em 1000 ocorrências de amostras do Twitter, objetivando averiguar, sob a ótica da Gramática de Construções e do Modelo de Língua Baseado no Uso e da Gramaticalização, se este padrão se trata de uma construção do português brasileiro, aplicável não só a objetos, mas também a pessoas. Foram encontradas evidências de que, no uso informal, o padrão frasal [trem + adjetivo] faz referência a pessoas em contextos em que não há depreciação do referente, como costuma ocorrer com o nome trem isoladamente, o que atesta a hipótese de que se trata de uma construção do português brasileiro.
A linguagem de uma fraude: análise das falsas confissões atribuídas aos irmãos Naves
Authors: Cunha Evandro Landulfo Teixeira Paradela , Cambraia César Nardelli
Published: September 2020

No caso dos irmãos Naves, alegou-se que eles teriam confessado o cometimento de um crime que sequer aconteceu. Neste artigo, é apresentada uma análise linguística e discursiva das confissões forjadas que foram atribuídas a eles, baseando-se, do ponto de vista teórico-metodológico, em estudos prévios acerca de características comuns a falsas narrativas no âmbito da linguística forense e na aplicação de método inspirado na crítica textual. Foi possível identificar elementos linguísticos que denunciam a falsidade das confissões atribuídas aos irmãos, como uma descrição extremamente minuciosa do suposto crime, a presença de erros, inconsistências e contradições no discurso e a utilização de linguagem de incerteza. Além disso, a comparação entre as duas confissões permitiu verificar a presença de eco e de padrões de condensação e expansão. Embora limitado pela natureza dos dados, este estudo fornece subsídios para discussões sobre como melhor caracterizar falsas confissões em contextos investigativos e judiciais.
Em prol de textos multimodais no contexto escolar: quais, como e por quê?
Authors: Ponciano Fernandes Cláudia Regina
Published: September 2020

Na sociedade contemporânea, embora o professor não seja mais a fonte principal de informações para o aluno, continua desempenhando a função de despertá-lo para uma leitura crítica de discursos implícitos de significados culturais, ideológicos e hegemônicos que circulam em textos multimodais. Este ensaio discute possíveis caminhos para uma análise crítica desses discursos. Desenvolve-se a partir de uma concepção de texto e descrição das abordagens teórico-metodológicas sugeridas para textos multimodais, a saber, a Análise Crítica do Discurso (FAIRCLOUGH, 2001; MEURER, 2005) e a Gramática do Design Visual (KRESS; VAN LEEUWEN, [1996] 2006). Em seguida, apresenta exemplos de estudos voltados para textos multimodais analisados e tece argumentos em prol do trabalho com textos multimodais na escola. Ao final, destacam-se três pontos relevantes: participação do professor em formações continuadas regulares, o conhecimento de ferramentas analíticas aplicáveis às novas configurações textuais e a inserção de textos multimodais do cotidiano como leitura crítica na escola.
Global Impact of COVID-19 Restrictions on the Surface Concentrations of Nitrogen Dioxide and Ozone
Authors: Keller Christoph A. , Evans Mathew J. , Knowland K. Emma , Hasenkopf Christa A. , Modekurty Sruti , Lucchesi Robert A. , Oda Tomohiro , Franca Bruno B. , Mandarino Felipe C. , Díaz Suárez M. Valeria , Ryan Robert G. , Fakes Luke H. , Pawson Steven
Published: September 2020

Abstract. Social-distancing to combat the COVID-19 pandemic has led to widespread reductions in air pollutant emissions. Quantifying these changes requires a business as usual counterfactual that accounts for the synoptic and seasonal variability of air pollutants. We use a machine learning algorithm driven by information from the NASA GEOS-CF model to assess changes in nitrogen dioxide (NO2) and ozone (O3) at 5756 observation sites in 46 countries from January through June 2020. Reductions in NO2 correlate with timing and intensity of COVID-19 restrictions, ranging from 60 % in severely affected cities (e.g., Wuhan, Milan) to little change (e.g., Rio de Janeiro, Taipei). On average, NO2 concentrations were 18 % lower than business as usual from February 2020 onward. China experienced the earliest and steepest decline, but concentrations since April have mostly recovered and remained within 5 % to the business as usual estimate. NO2 reductions in Europe and the US have been more gradual with a halting recovery starting in late March. We estimate that the global NOx (NO + NO2) emission reduction during the first 6 months of 2020 amounted to 2.9 TgN, equivalent to 5.1 % of the annual anthropogenic total. The response of surface O3 is complicated by competing influences of non-linear atmospheric chemistry. While surface O3 increased by up to 50 % in some locations, we find the overall net impact on daily average O3 between February–June 2020 to be small. However, our analysis indicates a flattening of the O3 diurnal cycle with an increase in night time ozone due to reduced titration and a decrease in daytime ozone, reflecting a reduction in photochemical production. The O3 response is dependent on season, time scale, and environment, with declines in surface O3 forecasted if NOx emission reductions continue.
A new Orbiting Carbon Observatory 2 cloud flagging method and rapid retrieval of marine boundary layer cloud properties
Authors: Richardson Mark , Lebsock Matthew D. , McDuffie James , Stephens Graeme L.
Published: September 2020

Abstract. The Orbiting Carbon Observatory 2 (OCO-2) carries a hyperspectral A-band sensor that can obtain information about cloud geometric thickness (H). The OCO2CLD-LIDAR-AUX product retrieved H with the aid of collocated CALIPSO (Cloud-Aerosol Lidar and Infrared Pathfinder Satellite
Observation) lidar data to identify suitable clouds and provide a priori cloud top pressure (Ptop). This collocation is no longer possible, since CALIPSO's coordination flying with OCO-2 has ended, so here we introduce a new cloud flagging and a priori assignment using only OCO-2 data, restricted to ocean footprints where solar zenith angle <45∘. Firstly, a multi-layer perceptron network was trained to identify liquid clouds over the ocean with sufficient optical depth (τ>1) for a valid retrieval, and agreement with MODIS–CALIPSO (Moderate Resolution Imaging Spectroradiometer) is 90.0 %. Secondly, we developed a lookup table to simultaneously retrieve cloud τ, effective radius (re) and Ptop from A-band and CO2 band radiances, with the intention that these will act as the a priori state estimate in a future retrieval. Median Ptop difference vs. CALIPSO is 12 hPa with an inter-decile range of [-11,87]hPa, substantially better than the MODIS–CALIPSO range of [-83,81]hPa. The MODIS–OCO-2 τ difference is 0.8[-3.8,6.9], and re is -0.3[-2.8,2.1]µm. The τ difference is due to optically
thick and horizontally heterogeneous cloud scenes. As well as an improved passive Ptop
retrieval, this a priori information will allow for a purely OCO-2-based Bayesian retrieval of cloud
droplet number concentration (Nd). Finally, our cloud flagging procedure may also be
useful for future partial-column above-cloud CO2 abundance retrievals.
Resolving ambiguous direction of arrival of weak meteor radar trail echoes
Authors: Kastinen Daniel , Kero Johan , Kozlovsky Alexander , Lester Mark
Published: September 2020

Abstract. Meteor phenomena cause ionized plasmas that can be roughly divided into two distinctly different regimes: a dense and transient plasma region co-moving with the ablating meteoroid and a trail of diffusing plasma left in the atmosphere and moving with the neutral wind. Interferometric radar systems are used to observe the meteor trails and determine their positions and drift velocities. Depending on the spatial configuration of the receiving antennas and their individual gain patterns, the voltage response can be the same for several different plane wave Directions Of Arrival (DOA), thereby making it impossible to determine the correct direction. Noise can create the same effect even if the system contains no theoretical ambiguities. We propose a method for interferometric meteor trail radar data analysis using coherent integration of the signal spatial correlation to resolve DOA ambiguities. We have validated the method by a combination of Monte Carlo simulations and application on 10 minutes of measurement data (174 meteor events) obtained with the Sodankylä Geophysical Observatory SKiYMET all-sky interferometric meteor radar. We also applied a Bayesian method to determine the true location of ambiguous events in the data set. In 26 out of 27 (~ 96 %) ambiguous cases, the coherently integrated spatial correlation gave the correct output DOA as determined by Bayesian inference. In the one case that was mis-classified there were not enough radar pulses to coherently integrate for the method to be effective.
FAIR: a project to realize a user-friendly exchange of open weather data
Authors: Frank Christopher W. , Kaspar Frank , Keller Jan D. , Adams Till , Felkers Miriam , Fischer Bernd , Handte Marcus , Marrón Pedro José , Paulsen Hinrich , Neteler Markus , Schiewe Jochen , Schuchert Marvin , Nickel Christian , Wacker Richard , Figura Richard
Published: September 2020

Abstract. Access to high quality weather and climate data is crucial for a wide range of societal and economic issues. It allows optimising industrial processes, supports the identification of potential risks related to climate change or allows the development of corresponding adaptation and mitigation strategies. Although such data is freely available through Germany’s national meteorological service DWD (Deutscher Wetterdienst) since 2017, the application potential in industry and society has certainly not yet been fully unlocked. Major obstacles are the complexity of the raw data, as well as missing tools for their simple integration into existing industrial applications. The goal of the research project FAIR is to simplify the information exchange between the DWD and economical players. In order to reach this goal a requirement analysis with end-users of weather data from three different sectors was conducted. A central requirement regarding the site assessment of wind plants is quick and easy access to historical wind-series at specific sites. Preferably downloadable in formats like CSV or via an API. Event planning partners are interested in a quick access to health relevant weather information at their event location, and the E-mobility sector in temperature data along planned routes. In this paper, we summarize the results of the requirement analysis and present the deduced technical architecture and FAIR services aiming at a user-friendly exchange of weather data.
Development of a semi-Lagrangian advection scheme for the NEMO ocean model (3.1)
Authors: Subich Christopher , Pellerin Pierre , Smith Gregory , Dupont Frederic
Published: September 2020

Abstract. As resolutions of ocean circulation models increase, the advective Courant number – the ratio
between the distance travelled by a fluid parcel in one time step and the grid size – becomes the
most stringent factor limiting model time steps. Some atmospheric models have escaped this limit
by using an implicit or semi-implicit semi-Lagrangian formulation of advection, which calculates
materially conserved fluid properties along trajectories which follow the fluid motion and end at
prescribed grid points. Unfortunately, this formulation is not straightforward in ocean contexts,
where the irregular, interior boundaries imposed by the shore and bottom orography are
incompatible with traditional trajectory calculations. This work describes the adaptation of the semi-Lagrangian method as an advection module for an
operational ocean model. We solve the difficulties of the ocean's internal boundaries by
calculating parcel trajectories using a time-exponential formulation, which ensures that all
parcel trajectories remain inside the ocean domain despite strong accelerations near the boundary.
Additionally, we derive this method in a way that is compatible with the leapfrog time-stepping
scheme used in the NEMO-OPA (Nucleus for European Modelling of the Ocean, Océan
Parallélisé) ocean model, and we present simulation results for a simplified test case of
flow past a model island and for 10-year free runs of the global ocean on the quarter-degree
ORCA025 grid.
Evaluation of the interactive stratospheric ozone (O3v2 module) for
the E3SM version 2 Earth System Model
Authors: Tang Qi , Prather Michael J. , Hsu Juno , Ruiz Daniel J. , Cameron-Smith Philip J. , Xie Shaocheng , Golaz Jean-Christophe
Published: September 2020

Abstract. Stratospheric ozone affects climate directly as the predominant heat source in the stratosphere and indirectly through chemical feedbacks controlling other greenhouse gases. The U.S. Department of Energy's Energy Exascale Earth System Model version 1 (E3SMv1) implemented a new ozone chemistry module that improves the simulation of the sharp tropopause gradients, replacing a version based partly on long-term average climatologies that poorly represented heating rates in the lowermost stratosphere. The new O3v2 module extends seamlessly into the troposphere and preserves the naturally sharp cross-tropopause gradient, with 20-40% less ozone in this region. Additionally, O3v2 enables the diagnosis of stratosphere-troposphere exchange flux of ozone, a key budget term lacking in E3SMv1. Here, we evaluate key features in ozone abundance and other closely related quantities in atmosphere-only E3SMv1 simulations driven by observed sea surface temperatures (SSTs, years 1990-2014), comparing with satellite observations and the University of California, Irvine chemistry transport model (UCI CTM) using the same stratospheric chemistry scheme but driven by European Centre forecast fields for the same period. In terms of stratospheric column ozone, O3v2 shows improved mean bias and northern mid-latitude variability, but not quite as good as the UCI CTM. As expected, SST forcing does not match the observed quasi-biennial oscillation, which is mostly matched with the UCI CTM. This new O3v2 E3SM model retains mostly the same climate state and climate sensitivity as the previous version, and we recommend its use for other climate models that still use ozone climatologies.
Mapping the fracture network in the Lilstock pavement, Bristol Channel, UK: manual versus automatic
Authors: Weismüller Christopher , Prabhakaran Rahul , Passchier Martijn , Urai Janos L. , Bertotti Giovanni , Reicherter Klaus
Published: September 2020

Abstract. The 100 000 m2 wave-cut pavement in the
Bristol Channel near Lilstock, UK, is a world-class outcrop, perfectly
exposing a very large fracture network in several thin limestone layers. We
present an analysis based on manual interpretation of fracture generations
in selected domains and compare it with automated fracture tracing. Our
dataset of high-resolution aerial photographs of the complete outcrop was
acquired by an unmanned aerial vehicle, using a survey altitude optimized to
resolve all fractures. We map fractures and identify fracture generations
based on abutting and overprinting criteria, and we present the fracture
networks of five selected representative domains. Each domain is also mapped
automatically using ridge detection based on the complex shearlet transform
method. The automatic fracture detection technique provides results close to
the manually traced fracture networks in shorter time but with a bias
towards closely spaced Y over X nodes. The assignment of fractures into
generations cannot yet be done automatically, because the fracture traces
extracted by the automatic method are segmented at the nodes, unlike the
manual interpretation in which fractures are traced as a path from fracture
tip to fracture tip and consist of several connected segments. This segmentation makes
an interpretation of relative age impossible, because the identification of
correct abutting relationships requires the investigation of the complete
fracture trace by following a clearly defined set of rules. Generations 1 and
2 are long fractures that traverse all domains. Generation 3 is only
present in the southwestern domains. Generation 4 follows an ENE–WSW
striking trend, is suborthogonal to generations 1 and 2, and abuts on
them and generation 3, if present. Generations 5 is the youngest fracture
set with a range of orientations, creating polygonal patterns by abutting at
all other fracture generations. Our mapping results show that the
northeastern domains only contain four fracture generations; thus, the five
generations of the outcrop identified in the southwestern domains are either
not all present in each of the five domains or vary locally in their
geometry, preventing the interpreter from linking the fractures to their
respective generation over several spatially separate mapping domains.
Fracture intensities differ between domains where the lowest is in the NE
with 7.3 m−1 and the highest is in the SW with 10 m−1, coinciding with different fracture orientations and
distributions of abutting relationships. Each domain has slightly different
fracture network characteristics, and greater connectivity occurs where the
development of later shorter fractures is not affected by the stress
shadowing of pre-existing longer fractures.
Use of Frozen Tendon Allograft in Two Clinical Cases: Common Calcaneal Tendon and Patellar Ligament Rupture
Authors: Serra C. Iván , Navarro Paula , Guillem Ricardo , Soler Carme
Published: September 2020

Many surgical techniques have been described in the literature to repair chronic tendon or ligament ruptures. Although direct approximation of the edges is the surgical technique of choice, the use of synthetic, fascia lata, semitendinosus muscle, and small intestinal submucosa grafts has been described to repair large defects or augment tenous repairs. The aim of this paper was to present the long-term outcome of two clinical cases using a common calcaneal tendon cadaver allograft with subsequent application of platelet-rich plasma for chronic ruptures diagnosed by ultrasound, with a chronic defect between both edges. Twenty-four months after common calcaneal tendon rupture and 12 mo after patellar ligament rupture, orthopedic follow-up of both patients showed complete functional recovery and ultrasound findings were consistent with correct integration of the graft in both cases.
COVID-19 y su influencia en el comportamiento del consumidor
Authors: García Murillo Mayra Jeaneth
Published: September 2020

La Organización Mundial de la Salud (OMS)está colaborando estrechamente con expertosmundiales, gobiernos y asociados para ampliar rápidamente los conocimientos científicos sobre este nuevo virus, rastrear su propagación y virulencia, asesorar países y personas sobre las medidas para proteger la salud y prevenir lapropagación del brote. Por lo cual realizar un análisis comparativo del comportamiento del consumidor en tiemposde pandemias como H1N1, SARS y Coronavirus es importante, porque en esta época ha crecidola demanda de ciertos productos farmacéuticos,granos básicos, productos de limpieza para el hogar en los que algunos canales hancobrado relevancia; pero otros canales, han perdido penetración de mercado y frecuencia de compra, debido a que las familias salen menos para evitar el contagio.
AÇÕES DE PREVENÇÃO DA TRANSMISSÃO VERTICAL DA SÍFILIS OFERTADAS À POPULAÇÃO INDÍGENA
Authors: Pícoli Renata Palópoli , Cazola Luiza Helena De Oliveira
Published: September 2020

Objetivo: identificar as ações de prevenção da transmissão vertical da sífilis ofertadas à população indígena de Mato Grosso do Sul.Método: estudo quantitativo, transversal, com 33 enfermeiros, utilizando-se de questionário autoaplicável, de maio a agosto de 2018, contendo três componentes (laboratorial, assistência clínica e promoção da saúde em contexto intercultural). Foi calculada média das respostas e desvio padrão da média.Resultados: verificou-se a disponibilidade do exame no diagnóstico da sífilis, embora houvesse demora no seu tempo de retorno. Para a assistência clínica, a disponibilidade da penicilina G benzatina e competência profissional para tratar a gestante e o recém-nascido mostraram-se relevantes. Para a promoção da saúde, a capacitação e conhecimento sobre os aspectos socioculturais relacionados à sífilis apresentaram-se frágeis.Conclusão: o conjunto de ações de prevenção da transmissão vertical da sífilis revela ganhos ainda parciais e comprometem a ampliação de capacidade de resposta das equipes no tratamento da gestante e recém-nascido.
Island Gospel
Authors: Butler Melvin L.
Published: September 2020

For Jamaican Pentecostal Christians, music is a form of worship that opens pathways to the Spirit and brings about deliverance from sin. It is also a way of drawing and transcending boundaries, as practitioners sing about what they believe and identify where they stand in relation to cultural and religious outsiders. This book explores these ritual functions as they are fulfilled within Jamaican church services and concerts. It highlights the ways in which Pentecostals cultivate feelings of collective distinctiveness by rendering gospel music with an island flavor and by patrolling stylistic boundaries between a holy “home” and a profane “world.” This dichotomy is destabilized through the transnational flow and appropriation of popular culture and “American” media. What emerges are the strategies of musical worship through which Pentecostals embody their religion and seek spiritual transcendence while navigating the crossroads of local and global practice. Pentecostals describe themselves as “in the world, but not of the world,” meaning that while they live and work in the broader society, they strive to be “sanctified” from it by upholding a distinct moral code. This narrative of worldly renunciation prompts believers to abandon prior habits of conduct while embracing newer, localized identities as children of God. This book uncovers how gospel music, as a dynamic cultural practice, complicates these theological affirmations and reveals the shifting foundations of Pentecostal identity in Jamaica and its diaspora.
Graphic News
Authors: Frisken Amanda
Published: September 2020

This book explores sensationalism as it took hold of U.S. media between 1870 and 1900. During this period, print news publishers became adept at translating stories about sex, crime, and violence into emotion-based pictures. Analysis of significant episodes in media history shows how a range of news media producers engaged with the sensational style. As they pioneered the art of visual journalism, news publishers conveyed racial, class, and gender anxieties in a complex dialogue with audiences that established precedents for modern media. Prominent cases – obscenity litigation, anti-Chinese violence, the Ghost Dance, Jim Crow-era lynching, and domestic violence – demonstrate how efforts to maximize the dramatic power of the news transformed everyday reporting and established standards for visual journalism. Commercial newspaper editors exploited sensationalism’ economic benefits, while marginalized groups and social activists experimented with its power to challenge negative stereotyping and mobilize their own constituencies. By the 1890s, a wide range of publications had come to embrace, adapt, and expand the sensational style through news illustration – albeit in different ways for different audiences. The patterns prevalent in entertainment publications infiltrated the commercial dailies, and even low-budget political news sheets: few publications could afford to resist borrowing from the sensational toolkit. As sensationalism increasingly pervaded visual journalism, the very nature of the news changed.
Epilogue
Authors: Weems Robert E.
Published: September 2020

The early1940s witnessed a rehabilitation of Anthony Overton’s public image. Thus, at the time of his death in 1946, much of the negativity associated with the early 1930s had dissipated. Anthony Overton’s son, Everett, presided over the Overton Hygienic Manufacturing Company from 1946 until his own death in 1960. Everett’s son, Anthony Overton III, ran the company from 1960 until 1983 (when Overton Hygienic closed). Shortly after the Overton Hygienic Manufacturing Company disappeared from the landscape of US business, a consortium of Chicagoans began a campaign to honor the legacy of the company’s founder, Anthony Overton. Their efforts ultimately resulted in the physical restoration of the Overton Building and the Chicago Bee Building, as well as their designation as municipal landmarks.
Historiography
Authors: Lumsden Linda J.
Published: September 2020

This essay traces the evolution of scholarship on the role of a broad range of media in the American suffrage movement, including the suffrage press, plays, films, and consumer goods as well as mainstream news representations of the movement. The essay retrieves individual suffrage editors and publications to historical memory and considers the social construction of gender in mainstream media and suffragists’ “self-mediation”; the intersection of race, class, and gender in media accounts of woman suffrage; the marketing of woman suffrage; and insights into related fields, including political science, social movements, journalism history, popular culture, literary studies, and communications studies. The essay traces how scholarship has evolved from casting woman suffrage as a white, middle-class, Northeastern movement dominated by a few leaders to a diverse mix of activists across the United States.
Writing and “Righting”
Authors: Sundaramoorthy Robin Mazyck , Broussard Jinx Coleman
Published: September 2020

While the suffrage movement has largely been viewed through the lens of white women fighting for the vote, African American women were very much a part of the movement. Some of these women were suffrage advocates and journalists; others were activists in other arenas. Many black suffragists viewed the vote as a way of elevating their race, and the black press helped these women spread their message. Although it provided lackluster support for the suffrage movement, the black press gave considerable attention to the topic. It gave voice to those who supported the cause and those who were adamantly against it. This chapter focuses on the contributions and writings of prosuffrage journalists such as Ida B. Wells, Mary Church Terrell, Frances Ellen Watkins Harper, Bettiola Fortson, and others covered by the black press. It assesses the public lives and work of these women who had to consider both race and gender as they spoke up and out for those who could not speak for themselves.
Afterword
Authors: Forde Kathy Roberts
Published: September 2020

Racial divisions shaped the women’s suffrage movement and inflected much of the journalism that helped suffragists collectively imagine women as political beings, persuade others that women should be directly involved in electoral politics, and secure the vote through ratification of the Nineteenth Amendment. These racial divisions proved tragic. If the Nineteenth Amendment ever promised a new era of racial democracy in America, that promise was lost when white suffragists abandoned the citizenship aspirations of black women (and men) in the South to the forces of white supremacy. Henry Grady’s New South ideology veiled coordinated efforts across the Southern states to thwart black political power and institute the “solid South” of white supremacy. In 1920, Mary McLeod Bethune helped lead black Floridians in a voter registration drive—a bold effort to claim black civil rights promised in both the Fifteenth and Nineteenth Amendments. The result was violent voter intimidation across the state and a massacre of black citizens in Ocoee.
White Problems and the Roots of Black Power
Authors: West E. James
Published: September 2020

This chapter documents how Bennett specifically, and Ebony more broadly, began to use black history as a lens through which to critique the gains and trajectory of the civil rights movement and the emergence of Black Power on the national stage. It focuses on the publication of Bennett’s “Black Power” series, which both preceded and overlapped with the popularisation of the Black Power slogan by activists such as Stokely Carmichael, and which aimed to analyse new patterns of black radical activist through a historical framework.
A Hero to Be Remembered
Authors: West E. James
Published: September 2020

This chapter explores how internal and external tensions influencing Ebony’s depiction of black history fed into the struggle to establish a national holiday for Dr. Martin Luther King, Jr. during the 1970s and 1980s. Against this backdrop, Bennett and other Ebony contributors struggled to negotiate the continued importance of the magazine’s black history content in a changing cultural and political climate. For some, the King Holiday represented an opportunity to reflect on the activist’s legacy as a ‘hero to be remembered.’ For others, it was a chance to reiterate the political application of the black past and its role in the ongoing struggle for black liberation.
O impacto da pandemia pela COVID-19 na saúde mental
Authors: Nabuco Guilherme , Pires de Oliveira Maria Helena Pereira , Afonso Marcelo Pellizzaro Dias
Published: September 2020

Introdução: Em momentos como a pandemia causada pela COVID-19, há evidências de que a morbimortalidade relacionada à saúde mental tende a superar a relacionada diretamente à infecção, sendo resultado da própria pandemia e também das medidas de distanciamento social. Objetivo: Apresentar uma proposta para a atuação das equipes de Atenção Primária no enfrentamento ao adoecimento mental relacionado à pandemia. Métodos: Revisando os fatores de risco e estressores, e resgatando os atributos e potencialidades da atenção primária à saúde, foi escrito um ensaio científico apresentando propostas do papel da APS. Resultados e Discussão: Os principais fatores de risco para adoecimento mental identificados incluem: vulnerabilidade social, contrair a doença ou conviver com alguém infectado, existência de transtorno mental prévio, ser idoso e ser profissional de saúde. O isolamento físico e o excesso de informações nem sempre confiáveis somam estressores à crise. As especificidades do luto durante a pandemia também aumentam o risco de lutos complicados. No contexto brasileiro, há ainda a crise político-institucional aumentando a ansiedade e insegurança da população. Propõe-se que a Atenção Primária à Saúde, com suas características e atributos, deve: identificar as famílias com risco aumentado para adoecimento mental; articular intersetorialmente para que as demandas dos mais vulneráveis sejam atendidas; orientar a população sobre como minimizar os fatores geradores de ansiedade; apoiar as famílias para possibilitar o processo de luto. Conclusões: Este ensaio pretende qualificar a discussão sobre o papel da APS na saúde mental da população e, portanto, subsidiar ações que potencializem o cuidado prestado pelas equipes durante a pandemia de COVID-19.