bluuebunny/crossref_metadata_2025 huggingface dataset:
GetHFData: A R package for downloading and aggregating high frequency trading data from Bovespa
Authors: Perlin Marcelo Scherer , Ramos Henrique P.
Published: October 2019

This paper introduces GetHFData, a R package for downloading, importing and aggregating high frequency trading data from the Brazilian financial market. Based on a set of user choices, the package GetHFData will download the required files directly from Bovespa’s ftp site and aggregate the financial data. The main objective of the publication of this software is to facilitate the computational effort related to research based on this large financial dataset and also to increase the reproducibility of studies by setting a replicable standard for data acquisition and processing. In this paper we present the available functions of the software, a brief description of the Brazilian market and several reproducible examples of usage.
Fundos Comportamentais possuem Desempenho Superior? Uma Análise baseada em Evidências Internacionais
Authors: Reis Robson Costa , Klotzle Marcelo Cabus , Figueiredo Pinto Antonio Carlos , Gomes Leonardo Lima
Published: October 2019

Este trabalho analisou o desempenho de 31 fundos mútuos comportamentais atuantes nos EUA, Europa e Japão descritos em Santoni e Kelshiker (2010). Foram observados os desempenhos dos fundos e seus respectivos Benchmarks em quatro indicadores: Índice de Sharpe, Índice de Sortino, Medida Ômega e Medida de Desempenho Comportamental. O horizonte da análise foi de 10 anos (jan/04 a dez/14) dividido em intervalos de 6, 12, 36, 60 e 120 meses. A partir da consolidação dos indicadores os fundos foram ranqueados e classificados em três faixas de desempenho: superior, intermediário e inferior. No intervalo de 120 meses não houve, na média geral, diferença de desempenho significativa (a 5%) entre os fundos e os Benchmarks. A análise por intervalos indicou que o desempenho dos fundos em relação aos Benchmarks piora conforme aumenta o prazo de aplicação. Nos intervalos mais curtos (6 e 12 meses) não houve, na média, diferença de desempenho significativa enquanto nos prazos mais longos (36 e 60 meses) o desempenho médio dos fundos foi significativamente inferior aos Benchmarks. Na média de todos os intervalos o desempenho médio dos fundos foi significativamente inferior aos Benchmarks.
Private Equity gera valor ao acionista? Uma análise comparativa de retorno e risco após o IPO.
Authors: Mauad Rogério Paulucci , Forte Denis
Published: October 2019

O crescimento vigoroso da indústria de Private Equity no mundo gerou questões fundamentais, como por exemplo explicar se as empresas abertas previamente investidas por estes gestores geram retornos reais aos seus acionistas, após o evento do IPO. Pouco se analisou, entretanto, sobre o risco dessas novas empresas. A contribuição deste artigo visa suprir especificamente essa lacuna com a inovação na ferramenta metodológica. A metodologia Wealth Relative Buy-and-Hold foi ajustada pelo seu risco idiossincrático, em cima da base de ofertas públicas realizadas na BM&FBovespa entre 2004-2014. Desconsiderando risco, os resultados sugerem o reconhecimento pelo mercado do prêmio de valor da gestão dos fundos nas empresas investidas, com retornos médios 36% superiores aos das empresas não-investidas, nos cinco primeiros anos pós-IPO. Ao incluir o ajustamento pelo risco, a presença de um fundo Private Equity não se mostra mais significante no retorno relativo das ações. A sugestão dos autores é que se testem amostras diferentes, períodos diferentes e artigos passados para verificar se as conclusões de geração de resultado se mantêm.
Análise de Performance de Fundos de Investimento Multimercado no Brasil
Authors: De Orleans e Bragança Maria Manuela , Pessoa Marcelo de Sales
Published: October 2019

O objetivo deste trabalho é verificar se os fundos de investimento Multimercado no Brasil geram alphas positivos, ou seja, se os gestores possuem habilidade e contribuem positivamente para o retorno de seus fundos. Para calcular o alpha dos fundos, foi utilizado um modelo com sete fatores, baseado, principalmente, em Edwards e Caglayan (2001), com a inclusão do fator de iliquidez de uma ação. O período analisado vai de 2003 a 2013. Encontramos que, de forma geral, os fundos multimercado geram alpha negativo. Os resultados diferem bastante por classificação Anbima e por base de dados utilizada. Verifica-se também se a performance desses fundos é persistente através de um modelo não-paramétrico baseado em tabelas de contingência. Não foram encontradas evidências de persistência.
O risco visto a posteriori e o risco imputado a priori nos contratos de um banco de desenvolvimento
Authors: Ramirez Denise Benetti , Petterini Francis Carlo
Published: October 2019

O artigo trata de dois assuntos raramente interseccionados na literatura: risco de inadimplência e bancos de desenvolvimento. Como a gestão de risco é fundamental para a maximização de lucro em bancos comerciais, há muitas análises deste tipo. Mas possivelmente porque os bancos de desenvolvimento têm papel indireto no sistema financeiro, são escassos os trabalhos com esta especificidade. Porém, uma gestão displicente de risco em tais bancos pode comprometer o financiamento estratégico de regiões e setores inteiros. Neste sentido, a pesquisa obteve acesso inédito aos microdados dos contratos de um banco de desenvolvimento brasileiro. Após estimar probabilidades de descumprimento (PD) entre perfis de mutuários, contrastaram-se as classificações de risco imputadas a priori. Observaram-se indicativos de distorções nas classificações de alguns perfis empresarias, e um consequente dilema: para corrigir isto seriam necessários contratos mais exíguos, contrários ao propósito do banco.
Viés de Familiaridade na Alocação de Ativos de Investidores Brasileiros
Authors: Ferman Bruno , Lersch Maurício Silveira , Yoshinaga Claudia Emiko
Published: October 2019

Este artigo analisa a concentração do portfólio de investidores nas ações das empresas em que trabalham, com o intuito de observar se uma versão do viés de home bias se aplica à amostra. Nosso estudo foi realizado com uma amostra extraída da custódia de clientes de uma corretora. Verificou-se que o percentual da participação de ações das empresas em que trabalham nos seus portfólios, em comparação a uma amostra de controle, é estatisticamente superior e de magnitude econômica relevante. Para garantir que os resultados são robustos ao possível pagamento de bônus em ações, identificamos empresas que explicitamente não utilizam esta forma de remuneração, e os efeitos ainda se mantiveram. Estes resultados evidenciam o potencial aumento de exposição ao risco que estes investidores incorrem, contrariando o conceito de diversificação.
Estimando Betas de Mercado com Quebras Estruturais
Authors: Oliveira Fernando Nascimento , Cunha Fernando Cesar dos Santos
Published: October 2019

Este trabalho verifica como quebras estruturais (quando existentes) afetam os modelos CAPM. Para tanto, foram utilizados todos os ativos líquidos listados na Bolsa de Valores de São Paulo e na Bolsa de Nova Iorque nas periodicidades mensal e trimestral. Foram utilizados três testes bastante difundidos na literatura de quebras estruturais. Os resultados mostraram que quebras estruturais são relevantes na maioria dos modelos para grande parte dos setores da economia, especialmente quando a periodicidade é mensal. A seguir, as quebras estruturais identificadas são inseridas nos modelos CAPM e seus Betas estimados novamente. Os Betas estatisticamente significantes são escolhidos e seus resultados comparados ao Beta de Mercado por setor da economia. Os resultados mostram que os Betas estimados se assemelham ao Beta de Mercado em mais de 78% dos setores das economias brasileira e americana nas periodicidades mensal e trimestral.
Estimação da Inflação Implícita de Curto Prazo
Authors: Araujo Gustavo Silva , Vicente José Valentim
Published: October 2019

A inflação implícita é a diferença entre as taxas de juros nominal e real. No mercado brasileiro, ela pode ser obtida facilmente a partir de títulos públicos prefixados e indexados à inflação. No entanto, quando tratamos da inflação implícita de curto prazo, tal tarefa apresenta duas dificuldades: a) os títulos indexados à inflação possuem defasagem de indexação; b) a sazonalidade da inflação implica em sazonalidade da taxa real. O objetivo desse trabalho é propor uma metodologia para estimação da inflação implícita de curto prazo que contorne estes dois problemas. Assumindo que o prêmio de risco da inflação é pequeno no curto prazo, avaliamos a capacidade de previsão da inflação implícita confrontando-a com expectativas baseadas em pesquisas. Os resultados mostram que a inflação implícita é competitiva em relação às previsões de analistas de mercado divulgadas no Boletim Focus. Uma vantagem da inflação implícita é o fato de ela permitir um acompanhamento mais estreito das expectativas do que as pesquisas, uma vez que ela é atualizada continuamente.
Medidas de avaliação de desempenho: os fundos de ações europeias no período 2001 a 2015
Authors: Wu Xiaoyan , Soares Vasco Salazar , Pacheco Luís Dias , Tavares Fernando Oliveira
Published: October 2019

As medidas de avaliação de desempenho dos fundos de investimento permitem estabelecer um ranking e têm um papel essencial para que os investidores tomem decisões de investimento. A escolha da medida indicada deve ter em consideração a preferência de risco por parte de investidores. Neste trabalho comparam-se as diferentes medidas ajustadas ao risco, tais como: índices de Sharpe, MM, Treynor, Jensen, RORAC, Informação, IVaR, Sortino, UPR, Omega, Fouse e Alfa de Sharpe. Os objetivos deste trabalho passam por testar a consistência entre as medidas, estudar a correlação das medidas com as preferências de risco e procurar as medidas que simulam o Morningstar rating. Para efetuar este estudo foram obtidos dados da base de dados da Yahoo finance, sendo que a amostra é constituída por 27 fundos de ações europeias, entre setembro de 2001 e setembro de 2015. Conclui-se que as medidas produzem rankings idênticos, pelo que existe uma correlação elevada entre elas, excluindo RORAC e o Índice de Informação. Os índices de Sharpe e MM evidenciaram maior capacidade explicativa em relação ao Morningstar rating e apresentam também uma correlação elevada com a função utilidade quadrática e com a função valor da teoria da perspetiva. O grau de correlação diminui à medida que aumenta o coeficiente de aversão ao risco, sendo que as medidas baseadas no downside risk (índice de Sortino e Omega) mantêm uma boa correlação com todos os níveis de preferência, tanto no período global como nos subperíodos.
Mercados Financeiros Internacionais: Uma Aplicação da Análise de Componentes Principais em Dados Dependentes
Authors: Zambon  Monte Edson
Published: October 2019

Este trabalho analisou o padrão de integração (co-movimentos) dos mercados financeiros internacionais de 25 países, no período de 1997 a 2015, por meio da análise de componentes principais, aplicada aos resíduos do modelo VAR-GARCH. Os resultados revelaram que, no período da crise do subprime, existiu uma substancial elevação da integração entre os países, em termos de co-movimentos dos índices financeiros (“efeito contágio”), especialmente para aos países desenvolvidos. No decorrer do período de análise, os países asiáticos alcançaram a segunda posição no que diz respeito ao percentual de explicação da variabilidade dos índices de retornos e observou-se o crescimento da participação individual da China. Mesmo ao longo do tempo, as características econômicas, políticas e geográficas parecem ser fundamentais em termos de integração financeira por parte dos países.
Monetary Policy and Long-Term Real Interest Rates in Brazil
Authors: Da Costa Filho Adonias Evaristo
Published: October 2019

This paper studies the sensitivity of long-term real rates to monetary policy in Brazil. Based on the response of long-term real rates to monetary policy decisions, it is found that monetary factors have little power over long-term rates, with 100 basis points unexpected hike in the policy rate leading to an increase in long-term real rates of 12 basis points. The results are consistent with the classical view of interest rates, in which the real rate of the economy in the long run is determined by real fundamentals and largely unrelated to monetary factors.
Incidence of Lower Extremity Injuries in 14- to 18-Year-Old Female Lacrosse Players from Long Island
Authors: Piselli Elizabeth , Catanese Dominic J. , Walter Eric G.
Published: October 2019

Women’s lacrosse is a relatively young sport in the United States. The goal of this study was to determine which lower extremity injuries are prevalent in the game of lacrosse so that better training programs and protective equipment can be applied. Women’s lacrosse is nearly an entirely different game than men’s lacrosse and is expected to have unique injury patterns that have yet to be investigated. The authors polled 200 female lacrosse players of the Long Island Elite Lacrosse Club. Of those, 76 returned the survey with proper consent. Of the 76, only 14 reported never having an injury. A majority of the athletes that reported one or more injuries either self-treated or solely saw the team trainer without a doctor follow-up. While there are limitations to the study, it is clear community outreach is needed to guide players to seek treatment when injured.
Updates in imaging in ocular oncology
Authors: Davila Jose R. , Mruthyunjaya Prithvi
Published: October 2019

Innovations in ophthalmic imaging have made a profound impact on the diagnosis and treatment of ophthalmic disease. In ocular oncology, the development of optical coherence tomography with enhanced depth imaging and swept source technologies has made it possible to visualize the anatomical characteristics of retinoblastoma and uveal melanoma with a level of detail previously unobtainable on clinical exam alone. As a result, our understanding of the pathophysiology of vision loss in choroidal melanoma in particular has improved. These modalities have also helped identify fundoscopically “invisible” tumors and risk stratify pre-malignant choroidal lesions, making a strong case for their inclusion in all screening evaluations. Optical coherence tomography angiography, on the other hand, has allowed non-invasive imaging of the retinal and uveal vasculatures, providing insight into vascular changes associated with malignant transformation and vision loss following exposure to radiation. While the impact of new imaging technologies on clinical outcomes and overall survival in ocular oncology has yet to be determined, several reports cited herein offer promising results.
Non-financial incentives and professional health workers’ intentions to stay in public district hospitals in Rwanda: A cross-sectional study
Authors: Ndikumana Celestin , Kwonyike Joshua , Tubey Ruth
Published: October 2019

Background:Evidence shows that human resources are one of the major pillars of the healthcare system. As a result, retaining the health workforce has been  associated with provision of the quality healthcare services. However, the challenge of retaining the health workforce has been an issue of concern in Rwanda. The purpose of this study was to assess the level of availability and provision of non-financial incentives, and their associations with professional health workers’ intentions to stay.

Methods:A cross-sectional survey research design with a quantitative approach was used.  With a population of 469 health workers from four district hospitals, the study considered a sample of 252 individuals. The study measured the perceived levels of availability and provision of non-financial incentives in terms of working conditions, training and development, career development, and intentions to stay. Logistic regression was used to assess the associations between predictors and the outcome variable with 95% confidence intervals and 5% of confidence level, and results were reported using odds ratios.

Results:The findings of the study show that perceiving an average and high level of working conditions was  associated with professional health workers’ intentions to stay (OR: 9.70, P<0.001 and OR: 5.77, P=0.001, respectively). Similarly, an average and high perceived level of  availability of career development programs predicted health workers’ intention to stay (OR: 13.98, P<0.001 and OR: 12.26, P=0.038, respectively). In the same way, health workers who rater availability of training and development programs as high had more odds of staying  (OR 1.025; P=0.014) than their counterparts who rated such programs as low.

Conclusion:There is a need for health care institutions and health planners at higher level to strategically boost health workers’ intentions to stay through non-financial packages including efficient and equitable training of health workers, manageable workload and initiate strong career development programs.
The diagnosis of tuberculous meningitis in adults and adolescents: protocol for a systematic review and individual patient data meta-analysis to inform a multivariable prediction model
Authors: Boyles Tom , Stadelman Anna , Ellis Jayne P. , Cresswell Fiona V. , Lutje Vittoria , Wasserman Sean , Tiffin Nicki , Wilkinson Robert
Published: October 2019

Background: Tuberculous meningitis (TBM) is the most lethal and disabling form of tuberculosis. Delayed diagnosis and treatment, which is a risk factor for poor outcome, is caused in part by lack of availability of diagnostic tests that are both rapid and accurate. Several attempts have been made to develop clinical scoring systems to fill this gap, but none have performed sufficiently well to be broadly implemented. We aim to identify and validate a set of clinical predictors that accurately classify TBM using individual patient data (IPD) from published studies.

Methods: We will perform a systematic review and obtain IPD from studies published from the year 1990 which undertook diagnostic testing for TBM in adolescents or adults using at least one of, microscopy for acid-fast bacilli, commercial nucleic acid amplification test for Mycobacterium tuberculosis or mycobacterial culture of cerebrospinal fluid.  Clinical data that have previously been shown to be associated with TBM, and can inform the final diagnosis, will be requested. The data-set will be divided into training and test/validation data-sets for model building. A predictive logistic model will be built using a training set with patients with definite TBM and no TBM. Should it be warranted, factor analysis may be employed, depending on evidence for multicollinearity or the case for including latent variables in the model.

Discussion: We will systematically identify and extract key clinical parameters associated with TBM from published studies and use a ‘big data’ approach to develop and validate a clinical prediction model with enhanced generalisability. The final model will be made available through a smartphone application. Further work will be external validation of the model and test of efficacy in a randomised controlled trial.
Developmental dysplasia of the hip: a systematic literature review of the genes related with its occurrence
Authors: Gkiatas Ioannis , Boptsi Anastasia , Tserga Dimitra , Gelalis Ioannis , Kosmas Dimitrios , Pakos Emilios
Published: October 2019

Developmental dysplasia of the hip (DDH) is one of the most prevalent congenital malformations. It has a wide spectrum of anatomical abnormalities of the hip joint and is characterized by mild or incomplete formation of the acetabulum leading to laxity of the joint capsule, secondary deformity of the proximal femur and irreducible hip dislocation. It is the leading cause of early hip osteoarthritis in young individuals. Both genetic and environmental factors have been proposed to play an important role in the pathogenesis of DDH. A high prevalence is present in Asian, Caucasian, Mediterranean and American populations, with females being more frequently affected. We evaluated a variety of genetic studies indexed in the PubMed database. Several susceptive genes, including WISP3, PAPPA2, HOXB9, HOXD9, GDF5, TGF Beta 1, CX3CR1, UQCC, COL1A1, TbX4 and ASPN have been identified as being associated with the development of DDH. Moreover, genetic association has also been reported between hip dysplasia and other comorbidities. Even though genetic components are a crucial part in the aetiology of DDH, several DDH susceptibility genes need further investigation. The purpose of this review is to present current literature evidence regarding genes responsible for DDH development.

Cite this article: EFORT Open Rev 2019;4:595-601. DOI: 10.1302/2058-5241.4.190006
Measuring Sub-second Wind Velocity Changes for Agricultural Drift One Meter Above the Ground
Authors: Schramm Matthew W. , Hanna H Mark , Darr Matt J. , Hoff Steven J. , Steward Brian L.
Published: October 2019

Abstract. Agricultural spray drift is affected by many factors including current weather conditions, topography of the surrounding area, fluid properties at the nozzle, and the height at which the spray is released. During the late spring/summer spray seasons of 2014 and 2015, wind direction, speed, and solar radiation (2014 only) were measured at 10 Hz, 1 m above the ground to investigate conditions that are typically encountered by a droplet when released from a nozzle on an agricultural sprayer. Measurements of wind velocity as the wind passed from an upwind sensor to a downwind sensor were used to evaluate what conditions wind may be most likely to have a significant direction or speed change which affects droplet trajectory. For two individual datasets in which the average wind speed was 3.6 and 1.5 m/s (8.0 and 3.4 mi/h), there exists little linear correlation of wind speed or wind direction between an upwind and downwind anemometer separated by 30.5 m (100 ft). The highest observed correlation, resulting from a 12-s lag between the upwind and downwind datasets, was 0.29 when the average wind speed was 3.6 m/s (8.0 mi/h). Correlations greater than 0.1 were only found for wind speeds exceeding 3 m/s. Using this lag time, it was observed that the wind direction 30 s into the future had a 30% chance to be different by more than 20° from current conditions. A wind speed difference of more than 1 m/s (2.2 mi/h) from current conditions [mean wind speed was 3.6 m/s (8.0 mi/h)] was observed about 50% of the time. Analyzing 36 days of the 2014 and 2015 spray season wind velocity data showed that the most variability in wind direction occurred with wind speeds below 2 m/s (4.5 mi/h). Greater wind direction variability occurred in the mid-afternoon with higher solar radiation. Keywords: Sprayers, Spray drift, Spray droplets, Turbulence, Wind effects.
Geospatial Scaling of Runoff and Erosion Modeling in the Chihuahuan Desert
Authors: Ball Grady P. , Douglas-Mankin Kyle R.
Published: October 2019

Abstract. Large-scale assessments of rangeland runoff and erosion require methods to extend plot-scale parameterizations to large areas. In this study, Rangeland Hydrology and Erosion Model (RHEM) parameters were developed from plot-scale foliar and ground-cover transect data for an arid, grass-shrub rangeland in southern New Mexico, and a method was assessed to upscale transect-plot parameters to a large landscape. The transect-plot data compared favorably to corresponding cell data generated from publicly available geospatial data for total foliar cover but less favorably for litter cover and poorly for rock cover. The RHEM effective hydraulic conductivity (Ke) parameter was comparable between transect-plot and geospatial-cell methods, but the splash and sheet erosion factor (Kss) had poor agreement between the two methods. Simulated runoff and erosion reflected differences in transect-plot and geospatial-cell-based RHEM parameterizations, with low error and very good agreement for runoff but high error and poor agreement for soil loss. These results demonstrate that Ke parameters developed using geospatial data calibrated to plot data can be extrapolated to large spatial areas and provide reasonable simulation of runoff using RHEM. However, these same geospatial methods do not provide reasonable estimation of Kss or simulation of soil loss. Poor representation of litter and rock cover variables, which are highly spatially heterogeneous at the plot scale, was inadequate to accurately represent Kss or soil loss using RHEM. High resolution ground cover data, such as from unmanned aerial systems, may improve parameterization of Kss, and, ultimately, arid rangeland soil erosion simulation. Keywords: Erosion, GIS, Hydrologic model, Rangeland, Runoff.
LUU CHECKER: A Web-based Tool to Incorporate Emerging LUs in the SWAT Model
Authors: Singh Gurdeep , Saraswat Dharmendra , Pai Naresh , Hancock Benjamin
Published: October 2019

Abstract.

Standard practice of setting up Soil and Water Assessment Tool (SWAT) involves use of a single land use (LU) layer under the assumption that no change takes place in LU condition irrespective of the length of simulation period. This assumption leads to erroneous conclusions about efficacy of management practices in those watersheds where land use changes (LUCs) (e.g. agriculture to urban, forest to agriculture etc.) occur during the simulation period. To overcome this limitation, we have developed a user-friendly, web-based tool named LUU Checker that helps create a composite LU layer by integrating multiple years of LU layers available in watersheds of interest. The results show that the use of composite LU layer for hydrologic response unit (HRU) delineation in 2474-km2 L’Anguile River Watershed in Arkansas was able to capture changed LU at subbasin level by using LU data available in the year 1999 and 2006, respectively. The web-based tool is applicable for large size watersheds and is accessible to multiple users from anywhere in the world. Keywords: Land use, Web-based tool, SWAT, LUU Checker.
Amendment of Herbicide Spray Solutions with Adjuvants to Modify Droplet Spreading and Fading Characteristics on Weeds
Authors: Lin Jeng-Liang , Zhu Heping , Ling Peter
Published: October 2019

Abstract.

Improving the coverage area and fading time of herbicidal droplets on weeds has the potential to enhance the biological control effectiveness. Droplet spreading and fading behaviors on five different weeds were characterized for spray solutions containing a 1.25% glyphosphate Rodeo herbicide amended with each of three different adjuvants (nonionic surfactant Kinetic, nonionic organosilicone surfactant DyneAmic, and nonionic surfactant and antifoaming agent Preference). The five weeds were ragweed, crabgrass, yellow nutsedge, common purslane, and spurge. Tests were conducted by depositing single 300 and 600 µm herbicidal droplets with different adjuvant concentrations on weed leaves inside an environment control chamber. A droplet at a higher adjuvant concentration had greater coverage area on weed surfaces. Preference-amended herbicidal droplets had the largest coverage area increase for all five weeds, and generally followed by droplets with Kinetic and DyneAmic except for 300 µm droplet on purslane and 600 µm droplet on spurge. In comparison with the herbicidal solution containing Rodeo and water only, with addition of adjuvants the 600 µm droplets increased the coverage area by 2.13 to 5.47, 1.76 to 2.56, 1.84 to 2.07, and 2.40 to 4.49-fold on crabgrass, yellow nutsedge, common purslane, and spurge, respectively, while the 300 µm droplets increased the coverage area on ragweed by 3.88 to 5.86-fold. In contrast, fading times of all 300 µm droplets decreased with the adjuvant addition except for DyneAmic applied on purslane. However, fading times of 600 µm droplets did not have increase or decrease trends with adjuvants, which depended on types of the adjuvant and weed. The overall comparison by integrated index (coverage area × fading time) indicated that a spray droplet at higher adjuvant concentration was likely to have a higher integrated index. In addition, Preference amended droplets had significantly more integrated index increase for crabgrass and nutsedge, while DyneAmic had more increase for purslane. Therefore, appropriate selections of spray adjuvants during herbicide applications could significantly increase droplet deposition effectiveness for controlling specific weeds. Keywords: Spray droplet, Spray additive, Herbicide application, Surfactant, Weed control.
Corpo-políticas de la vulnerabilidad o de cómo la materia resiste al discurso
Authors: Saez Tajafuerce Begonya
Published: October 2019

El artículo ofrece una reflexión sobre las corpo-políticas de la vulnerabilidad. Remite a la concepción foucaultiana de la biopolítica y, sobre todo y de forma explícita, a la actualización y correctivo que de ella lleva a cabo Achille Mbembé con su noción de necropolítica. Tomando la vulnerabilidad como eje principal que dice una determinación ontológica que va a ser política, se analiza en clave interseccional la materialidad del cuerpo que, por ser radicalmente singular, excede al discurso y escapa de ese modo a la lógica del reconocimiento. Finalmente, se pone a prueba el análisis con relación a la película Eva no duerme.
El selfie como performance de la identidad. Explorando la performatividad de la auto-imagen desde el arte de acción
Authors: Ayerbe Nerea , Cuenca Jaime
Published: October 2019

La actual proliferación de selfies en las redes sociales online permite contemplar con especial crudeza las condiciones en que se desarrolla hoy la (continua) construcción de la identidad individual por medios visuales. Frente al sujeto sólido y autónomo que se representaba a sí mismo en el autorretrato tradicional, el selfie propone una identidad provisional y condicionada siempre a la reacción del resto de usuarios de cualquier red social. El presente artículo tratará de arrojar luz sobre esta peculiar capacidad subjetivadora del selfie, conciliando diversas aportaciones teóricas procedentes de disciplinas como la teoría del arte, la sociología ordinaria, la filosofía política o los Performance Studies. Se analizará el selfie como dispositivo performativo de construcción de identidad. Posteriormente, nos ocuparemos de otra forma de performatividad de la imagen, en diálogo con las reflexiones de Philip Auslander en torno a la documentación fotográfica de acciones artísticas. Ambas esferas, la del arte de acción y la del ecosistema de identidades de las redes sociales online, se analizarán en las propuestas de Amalia Ulman, Kate Durbin y Milo Moiré: tres performers que ponen en el centro de su trabajo la acción misma de tomar un selfie o compartirlo. Como tratará de mostrarse, la ambigua literalidad de su gesto visibiliza las contradictorias condiciones que rigen hoy la construcción performativa de la propia identidad, constatando así la potencia del arte como índice crítico de los avatares contemporáneos de la imagen y sus efectos sociales.
El gen histórico de la rebeldía. Sangre, historia y memorias en la persistencia omaguaca (Jujuy, Argentina)
Authors: Espósito Guillermina
Published: October 2019

En este artículo se analizan los modos en que un pueblo indígena de las tierras altas de Jujuy (Argentina) recurre al pasado prehispánico y colonial como locus que legitima sus prácticas y proyectos políticos. Para ello establece una filiación histórico-genética con sus ancestros prehispánicos, apelando a la posesión de un común acervo heredado por sangre, y a la autoridad historiográfica que reprodujo por al menos un siglo los discursos sobre su bravura presentes en las crónicas españolas del siglo xvi. Para el análisis se abordan dos registros: 1) las crónicas y fuentes históricas que entre fines del siglo xvi y principios del xvii describieron a los indígenas de la región, junto a los discursos arqueológicos e historiográficos que tres siglos después reprodujeron o cuestionaron estas caracterizaciones bravías; 2) la actualización de tales descripciones en el presente a través del análisis de las narrativas y materialidadades que ofician de soportes de las memorias y del linaje omaguaqueño.
Presentación. Las formas de la identidad inclinada: espacios, imágenes y mediaciones
Authors: Garro Larrañaga Oihana , Miranda Berasategi Olaia
Published: October 2019

Este texto presenta el número monográfico “Las formas de la identidad inclinada”. El número pretende desplegar la propuesta de una “identidad inclinada” de la filósofa Adriana Cavarero a partir de diferentes prácticas y materializaciones artísticas contemporáneas. Frente a la rectitud y exterioridad cerrada de la modernidad o la “caída en libre” postmoderna, esta geometría inclinada, atendiendo la relación y dependencia radical hacia todo lo que coexiste, se presenta como posibilidad de levantamiento tanto material como de la identidad. Partiendo de ese presupuesto, los artículos que se reúnen en este monográfico tratan de pensar en esas correspondencias que surgen entre la identidad inclinada y algunas materializaciones y mediaciones del arte contemporáneo. Además del trabajo de Adriana Cavarero que se recoge en la sección Fundamentales, el número cuenta con las contribuciones de Oihana Garro y Olaia Miranda, Nerea Ayerbe y Jaime Cuenca, Begonya Saez Tajafuerce y Beatriz Cavia Pardo, a las que se les suma —en la sección Papeles Críticos— los trabajos de Lidia Montesinos, Marion Cruza y Andrea Zarza..
Origination Progress and Utility of Selective Estrogen Receptor Modulators in Clinical Practice as an Efficient Substitute of Estrogen for Treating Hormone Dependent Issues
Authors: Kulshrestha A. , Pandey J.
Published: October 2019

The discovery, development and utility of selective estrogen receptor modulators (SERMs) are presented in this study. As per literature review SERMs used in the treatment of estrogen hormone responsive diseases like osteoporosis, Alzheimer, angiogenesis, hyperlipidemia, coronary heart disease, atherosclerosis, endometriosis, breast cancer, post-menopausal depression, dysfunctional uterine bleeding, gynacomastia, Albright syndrome, ovarian cancer, dyspareunia, cyclical mastalgia, hypogondism and induced ovulation in sub-fertile woman, etc. Basically world wide a large no. compounds available those function as SERMs successfully or under different phase clinical trials or discontinued because of unwanted side effects during clinical trials. This work describes the specific reference compounds which have created a substitute of estrogen for treating hormone dependent issues.
Evaluation of Chemical, Antipsoriatic and Antiangiogenic Properties of Salt from Lonar Crater Lake Water
Authors: Bansode Prakash , Somasundaram Indumathi , Birajdar Apurva , Mishra Sanjay , Patil Dhanashree , Waghmode Ahilya , Rashinkar Gajanan
Published: October 2019

Lonar Crater lake was created by the impact of a massive meteor during the Pleistocene Epoch. Being a hypersaline and hyperalkaline soda lake, rich microbial diversity is reported earlier. Lonar lake water is used by local people and tribals against skin diseases. These observations prompted us to investigate the therapeutic potential of lake water against skin diseases. In this context, we have conducted pilot study to assess the antipsoriatic and antiangiogenic activity of the salt obtained from lake water using THP1 cell line by MTT assay and antiangiogenic activity by in vivo chicken chorioallantoic membrane (CAM) assay, as there is a close relation between psoriasis and angiogenesis. The results revealed that salt possess remarkable antipsoriatic and antiangiogenic activity.
Active Copper Catalyzed Regioselective Ring Opening of Epoxides by Heterocyclic Amines: An Efficient Protocol for Synthesis of β-Amino Alcohols
Authors: S. Devkate Santosh , S. Burungale Arvind , S. Pise Ashok , D. Jadhav Sunil
Published: October 2019

The regioselective epoxide ring opening at less substituted carbon atom of epoxide were reported by nucleophiles like heterocyclic amines which gives well known 1,2-difunctionalized amino alcohols. These are present in many synthetic as well as natural products. The ring opening of epoxide is achieved by cleavage with amines in presence of copper(0) as a catalyst. It is observed that the lithium napthalenide reduction of copper(I) produces a highly reactive form of copper(0) that acts as a catalyst for ring opening of epoxides with an amine.
Diseño de un sistema de reconocimiento de patrones en imágenes termográficas y de huella plantar para la identificación de pie plano en niños con edades entre cinco y seis años
Authors: Muñoz-Neira Milton Javier , Martínez-Parra Anyed Stephany , Ruiz-Adarme Cristian Gerardo , Triana-Castro Carlos Humberto , Cornejo-Plata Jorge Luis
Published: October 2019

The following paper presents the main results of exploratory research-oriented to the design and implementation of a pattern recognition system for flatfoot identification in children between 5 and 6 years. Patterns were determined from texture analysis of foot thermographic images, and from contour analysis of footprint images. For each case, an artificial neuronal network was trained, with base in a back-propagation algorithm. In each trial, 70 % of data were used for training, and 30 % for validation. For experiments done, success rates greater than 80 % were achieved. The best results were reached with contour patterns reduced by principal components analysis, PCA, in a binary system, with a success rate of 90.84 % in cross-validation. Results are a contribution to the study of diagnostic techniques for flatfoot treatment through the use of technologic tools.
Prototipo para orientación de personas con discapacidad Visual mediante una aplicación para móvil
Authors: Zambrano Dannyll Michellc , Daza Álava Yohanna Daniela , Pinargote Zambrano José Daniel , Lituma Ramirez Edgar Danilo
Published: October 2019

El presente trabajo describe el Diseño y elaboración de un prototipo que por medio de un algoritmo se vincule con una aplicación para móvil (App) y permita la orientación de personas con discapacidad visual implementado en la Facultad de Ciencias Informáticas de la Universidad Técnica de Manabí; se compone de dos partes, la aplicación móvil la cual se desarrolló en el entorno de programación Android Studio que permite detectar señales inalámbricas (estándar IEEE 802.11); el dispositivo detecta ciertas señales pre programadas a cierta distancia emitirá un audio que estará acompañado de una vibración distinta para cada punto de referencia indicando el sector por el cual se encuentra circulando. La otra parte del prototipo son los puntos de referencia o puntos de acceso, cuyo principal componente es un módulo Inalámbrico (NodeMcu V3 LoLin); el cual mediante un algoritmo emite la señalización en la banda ISM de 2,4 GHZ a los terminales móviles. Los puntos de referencia tienen una autonomía energética de la alimentación de corriente alterna de hasta 20 horas por medio de un panel fotovoltaico en un circuito de conmutación automático.
Kinetics of Transesterification Reaction of Soybean Oil into Biodiesel with CaO Catalyst
Authors: Pratigto Setiarto , Istadi Istadi
Published: October 2019

The use of biodiesel is expected to reduce dependence on fossil fuels. In this study, the kinetic reaction of transesterification of soybean oil with methanol will be assessed using heterogeneous CaO solid base catalyst with parameters of mole ratio of reactants to the conversion of methyl ester used to determine the reaction velocity equation. The reaction speed equation is used in the design of a fluidized CSTR (Continues Tank Reactor) reactor to obtain the reactor volume and catalyst weight. The purpose of this study was to determine the form of the velocity reaction equation for soybean and methanol transesterification reactions using CaO catalyst and determine the weight of the catalyst needed by using the reaction speed equation. The study was carried out by transesterification of soybean oil and methanol with CaO catalyst with the independent variable mole ratio of reactants while the fixed variable reaction temperature was 60°C, catalyst weight was 3% (% b/v), reaction time was 180 minutes. The results showed that methanol adsorbed on the surface of the catalyst and triglycerides not adsorbed on the surface of the catalyst showed that the mechanism of the catalytic reaction that occurred was the Eley-Rideal mechanism where one of the reactants was adsorbed on the surface of the catalyst. The form of the speed equation for the transesterification reaction of soybean oil and methanol using a CaO catalyst is  . The reaction speed equation is used in the design of the reactor, so that the relationship between the weight of the catalyst needed to convert triglycerides to biodiesel and the predicted calculation of the volume of the reactor used can be done.
The social dimension and indicators of sustainability in agrifood supply chains
Authors: Santos Renato Rocha Dias , Guarnieri Patricia , Do Carmo Jr. Otavio Moreira , Dos Reis Silvia Araújo , Carvalho José Márcio , Peña Carlos Rosano
Published: October 2019

Several organizations aim to establish and manage cooperative and collaborative actions in order to incorporate the principles related to sustainable management in supply chains. The indicators related to the social dimension are still barely explored in academic research, since the perceived business practices are still emerging in the contemporary world and in the organizational relations. The opposite of the financial and environmental dimensions, which are already rooted in the business environment. In agrifood chains, social aspects are essential when suppliers are often impoverished farmers, and labor practices are generally painful and exploitative. This paper aims to identify, in the international literature, the state-of-the-art research related to social sustainability in agrifood supply chains. To achieve this goal, a systematic literature review covering papers published in the Science Direct, Directory of Open Access Journals and Emerald Insight databases was carried out. Results indicate that academic production is still low, despite its growth in recent years, and is limited to approaches containing indicators of social sustainability related to support communities affected by agrifood business. In addition, it evidences arrangements among members of supply chains, mostly of the cooperative type, having collaborative arrangements with more limited approaches among the analyzed works.
Decision support system based in AHP method to selection vendors of clinical laboratorys inputs
Authors: Longaray André Andrade , Gonçalves Anderson Picua , Tondolo Vilmar Gonçalves , Tondolo Rosana , Machado Catia Maria dos Santos
Published: October 2019

In a competitive marketing scenario, the purchasing area contributes significantly to the achievement of organizational goals. Its mission is to identify the competitive needs of products and services, becoming responsible for the timely delivery, costs optimization and quality. Within shopping, a correct selection of vendors is important for this to happen. From this perspective, the present study aims to develop a model that assists in the vendors’ selection process. This way, a case study was carried out in a clinical analysis laboratory located in the city of Rio Grande, where the AHP (Analytic Hierarchy Process) was used as an intervention tool. The development process consisted in three stages. The first one aimed at structuring the model, in which the hierarchy of criteria was defined. In the second step, the judgments were carried out and the relative weights for each criterion and subcriterion were calculated. Finally, the third step aimed at applying the model developed in a purchasing process. The model was tested in a selection process that involved the evaluation of three vendors of a laboratorial input, in order to identify which one met the demands of the organization. The result obtained with its use was considered satisfactory, this way, the model was approved by the manager who participated in the structuring process of the AHP hierarchy.
Homogenization in BV of a model for layered composites in finite crystal plasticity
Authors: Davoli Elisa , Ferreira Rita , Kreisbeck Carolin
Published: October 2019

In this work, we study the effective behavior of a two-dimensional variational model within finite crystal plasticity for high-contrast bilayered composites. Precisely, we consider materials arranged into periodically alternating thin horizontal strips of an elastically rigid component and a softer one with one active slip system. The energies arising from these modeling assumptions are of integral form, featuring linear growth and non-convex differential constraints. We approach this non-standard homogenization problem via Gamma-convergence. A crucial first step in the asymptotic analysis is the characterization of rigidity properties of limits of admissible deformations in the space BV of functions of bounded variation. In particular, we prove that, under suitable assumptions, the two-dimensional body may split horizontally into finitely many pieces, each of which undergoes shear deformation and global rotation. This allows us to identify a potential candidate for the homogenized limit energy, which we show to be a lower bound on the Gamma-limit. In the framework of non-simple materials, we present a complete Gamma-convergence result, including an explicit homogenization formula, for a regularized model with an anisotropic penalization in the layer direction.
The Date and Place of Andronicus’ Edition of Aristotle’s Works According to a Neglected Arabic Source
Authors: Perkams Matthias
Published: October 2019

This paper presents and discusses the notice on the life and work of Andronicus of Rhodes by the famous Arabic philosopher Abū Naṣr al-Fārābī, which has been transmitted by the historian of medicine Ibn Abī ʿUṣaibiʾa. This text, which has never been discussed by modern scholarship on Andronicus, is our only direct source on the life, the time and the place of Andronicus’ famous edition of Aristotle. The paper argues that the informations in this passage must stem from a rather well informed Greek source, which presented an alternative and more complete account than the informations we have from Plutarch. We learn that Andronicus taught Aristotelian philosophy in Alexandria before 30 B.C. and based his editorial work on old Aristotelian manuscripts from the library there. After that date, he accompanied Augustus to Rome where he may have completed his edition. Thus, the late dating of Andronicus’ edition is confirmed by an independent source.