bluuebunny/crossref_metadata_2025 huggingface dataset:
O Efeito Halloween no Mercado Acionário Brasileiro
Authors: Almeida Juliano Ribeiro de , Almeida Guilherme Ribeiro de , Bergmann Daniel Reed
Published: October 2019

O efeito Halloween diz respeito à noção de que os retornos do mercado acionário tendem a ser maiores no período de novembro a abril do que no período de maio a outubro. Neste estudo, analisamos a robustez dessa estratégia de negociação levando em consideração os retornos individuais de ações negociadas no mercado brasileiro durante o período de agosto de 1994 e junho de 2014. Utilizando a abordagem padrão de regressão por variáveis dummy, introduzida por Bouman e Jacobsen (2002), nossos resultados sugerem a existência do efeito Halloween no mercado brasileiro, o qual mostrou-se economicamente e estatisticamente significativo, com sinal positivo e com leve tendência de queda ao longo dos últimos anos. Além disso, ao reavaliar esses resultados utilizando o “Superior Predictive Ability test” de Hansen (2005), constatamos que uma estratégia de investimento baseada no efeito Halloween gera retornos estatisticamente significativos e superiores a uma estratégia de investimento buy-and-hold quando os efeitos de data-snooping não são desprezados na série dos retornos das ações, como ocorre em Bouman e Jacobsen (2002).
A União Faz a Força? Um Teste Usando Fatores de Retorno
Authors: Evrard Henri Siro , Cruz June Alisson Westarb
Published: October 2019

O presente trabalho tem o objetivo de verificar a eficiência de fatores de retorno em prever o retorno de ações negociadas na BM&Fbovespa. Foram testados 39 modelos, agrupando 16 variáveis em sua totalidade, em famílias e isoladamente. Todos os modelos foram testados utilizando como payoff dos fatores o coeficiente OLS dos últimos 12 meses, sendo que os de variável isolada também foram testados utilizando um coeficiente estático. As variáveis lucro/preço e receita/preço, com payoff estático, apresentaram eficiência preditiva média superiores ao do modelo utilizando a totalidade das variáveis, confrontando com o ganho marginal da multifatorialidade. Foi verificado eficiência preditiva significativa para os modelos i) mutifatoriais: totalidade das variáveis e família de “baratamento”; ii) de variável isolada: dividend yield; lucro/preço; receita/preço; ROA e excesso de retorno de 12 meses com payoff estático, e lucro/preço e valor de mercado com coeficiente móvel. A existência de capacidade preditiva se opõe à eficiência de mercado.
Brazilian Review of Finance 2016 Editorial Report
Authors: Laurini Marcio Poletti
Published: October 2019

RBFin is the main Brazilian publication outlet of academic papers about finance. Using the Open Journals System to manage the editorial process, publication of RBFin adheres to a strict publication schedule. The journal is indexed by EconLit, RedALyC, Proquest, Google Scholar, Gale and Ebsco and is listed in the JEL, DOAJ, Latindex, OpenJGate, and Cabell’s directories. RBFin is rated B1 in the business and economics areas of the Brazilian classification system. The editorial board undergoes partial turnover every year and comprises 19 individuals from four countries, the Brazilian members being affiliated with universities in five different Brazilian states. The acceptance rate was 43% for the 2016 year. The average number of days between receipt and first decision for articles submitted in 2016 was 143. The average number of days between receipt and final decision for articles submitted in 2016 was 154. The worst case was 381 days. Twenty-nine individuals served as reviewers in 2016.
Modeling and Forecasting the Volatility of Gas Futures Prices
Authors: Aiube Fernando Antonio Lucena , Samanez Carlos Patrício , Resende Larissa de Oliveira , Baidya Tara Keshar Nanda
Published: October 2019

We examine the ability of three different GARCH-class models, with four innovation distributions, to capture the volatility properties of natural gas futures contracts traded on the New York Mercantile Exchange. We jointly estimate the long-memory processes for conditional return and variance investigating the long-memory and persistence of long and short maturities contracts. We examine the ability of these models and distributions to forecast the conditional variance. We find that AR(FI)MA-FIAPARCH model is a better fit for short- and long-term contracts. However, there is not a single innovation distribution that provides a better fit for all of the data examined. The out-of- sample forecast of variance also provides mixed results concerning the best innovation distribution. Further, the persistence decreases as the maturity of contracts increases.
Arbitragem Estatística: Uma Abordagem por VECM
Authors: Soto Paula Andrea , Ruilova Teran Juan Carlos
Published: October 2019

Neste trabalho foi construído um modelo de arbitragem estatística, aplicado e testado no mercado brasileiro de ações. As séries de preços foram modeladas usando a técnica de VECM (Vector Error Correction Models) para aplicar uma estratégia de compra e venda de ações long-short, autofinanciável e neutra ao mercado. Nesta estratégia, os desvios no equilíbrio a longo prazo dos preços são identificados para criar sinais de compra e venda. Foi utilizada a técnica de componentes principais para a seleção de portfólios com tendências comuns. A viabilidade desta estratégia foi abordada empiricamente usando simulações nessas carteiras. Seu desempenho também foi comparado com outras estratégias de negociação do tipo long-short e todas foram analisados em termos de retornos, volatilidade e oportunidades de arbitragem estatística. Em cada estratégia os resultados mostram que a técnica proposta é adequada para a modelagem dos portfólios, e todas as estratégias testadas foram capazes de agregar valor para o investidor. A estratégia proposta destaca-se por apresentar arbitragem estatística.
Estratégias de Momento no Mercado Cambial
Authors: Da Silva Kesley Leandro , Fernandes Marcelo
Published: October 2019

Utilizamos dados semanais para investigar o desempenho de estratégias de momento no mercado de câmbio. Consideramos tanto regras lineares baseadas em médias móveis, quanto métodos de extração de tendência não linear. Os resultados mostram que os desempenhos de todas as estratégias são extremamente sensíveis à escolha da moeda, às defasagens utilizadas e ao critério de avaliação escolhido. Em particular, as moedas dos países do G10 apresentam resultados médios melhores com a utilização dos métodos não lineares, enquanto as moedas dos países emergentes apresentam resultados mistos. Adotamos também uma metodologia para o gerenciamento do risco das estratégias de momento, visando minimizar as “grandes perdas”. Ela tem êxito em diminuir as perdas máximas semanais, o desvio-padrão, a assimetria e a curtose para a maior parte das moedas em ambas as estratégias. Quanto ao desempenho, as operações baseadas no filtro HP com gestão do risco apresentam retornos e índices de Sharpe maiores para cerca de 70% das estratégias, enquanto as baseadas na regressão não paramétrica apresentam resultados melhores para cerca de 60% das estratégias.
Dissecando Anomalias com o Modelo de Cinco Fatores para Mercado Acionário Brasileiro
Authors: Garcia Alexandre Schwinden , Santos André Alves Portela
Published: October 2019

Este artigo estima para o mercado brasileiro o modelo multifatorial proposto por Fama e French (2015, 2016) e provê um detalhamento de cinco anomalias: beta, emissão líquida de ações, momento, volatilidade e accruals. Os resultados apontam que a inclusão do fator rentabilidade proposto no modelo de Fama e French (2015) tem papel crucial na redução da magnitude dos interceptos médios e da estatística GRS para todos os portfólios tamanho-anomalia considerados no artigo. Consistente com a evidência internacional, os resultados indicam, dentre outras coisas, que (i) empresas que recompram ações apresentam maiores retornos e são mais conservadoras em termos de investimento, (ii) firmas com menor volatilidade apresentaram maiores retornos, são menos sensíveis aos retornos do mercado e tem carga positiva no fator tamanho, (iii) firmas menores são mais agressivas em termos de investimento e menos rentáveis, (iv) alto beta esteve associado a maiores retornos somente entre firmas menores e (v) retornos médios de empresas com altos accruals superaram retornos médios de empresas com baixos accruals.
Estratégias de Imunização de Carteiras de Renda Fixa no Brasil
Authors: Meirelles Sofia Kusiak , Fernandes Marcelo
Published: October 2019

Este trabalho visa comparar, estatisticamente, o desempenho de duas estratégias de imunização de carteiras de renda fixa, que são recalibradas periodicamente. A primeira estratégia, duração, considera alterações no nível da estrutura a termo da taxa de juros brasileira, enquanto a abordagem alternativa tem como objetivo imunizar o portfólio contra oscilações em nível, inclinação e curvatura. Primeiro, estimamos a curva de juros a partir do modelo polinomial de Nelson & Siegel (1987) e Diebold & Li (2006). Segundo, imunizamos a carteira de renda fixa adotando o conceito de construção de hedge de Litterman e Scheinkman (1991), porém assumindo que as taxas de juros não são observadas. O portfólio imunizado pela estratégia alternativa apresenta empiricamente um desempenho estatisticamente superior ao procedimento de duração. Mostramos também que a frequência ótima de recalibragem é mensal na análise empírica.
Controle Acionário, Remuneração de Executivos e Desempenho Empresarial: Evidências para o Mercado Brasileiro
Authors: Ermel Marcelo Daniel Araujo , Do Monte Paulo Aguiar
Published: October 2019

Esse artigo buscou examinar como o tipo de controlador afeta a relação remuneração e desempenho da diretoria nas empresas brasileiras no período de 2010 a 2013. Primeiramente, o controle no Brasil ainda é majoritariamente exercido por firmas familiares, e que o capital também é concentrado, sendo em média 65% do capital detido pelos 5 maiores acionistas. Quanto a análise econométrica os resultados indicaram que: As empresas de controle familiar e governamental remuneram seus gestores com um valor menor em relação os outros tipos de controle; Não foi possível fazer inferência acerca da influência do controlador nas empresas institucionais; As empresas sem controlador remuneram o seu gestor com um valor maior de remuneração. Por fim, quanto ao desempenho, em nenhuma das equações o ROA foi significativo, demonstrando fracos mecanismos de remuneração ou capacidade do gestor em determinar sua compensação.
Evidências do Prêmio do Mês do Dividendo no Mercado Acionário Brasileiro
Authors: Pereira Camila Cardoso , Ely Regis A. , Shikida Cláudio Djissey
Published: October 2019

Este artigo testa a presença do prêmio do mês do dividendo no mercado acionário brasileiro. Esse prêmio consiste na existência de retornos anormais quando é prevista a emissão de dividendos por parte das empresas. Construímos portfólios através de um algoritmo de previsão de dividendos e então verificamos a existência de retornos anormais utilizando modelos de precificação multifatoriais. Encontramos evidências de um prêmio positivo e significativo em torno de 1% ao mês, porém este efeito é reduzido ao retirarmos da nossa amostra ações com baixa liquidez. Também encontramos evidências de que o prêmio do mês do dividendo é maior para portfólios com maior composição de ações small caps e de ações com maior razão dividendo-preço.
A GARCH-VaR Investigation on the Brazilian Sectoral Stock Indices
Authors: Bernardino Wilton , Brito Leonardo , Ospina Raydonal , Melo Silvio
Published: October 2019

In this paper, we have explored operational risk in Brazil by considering different sectoral indices of the Brazilian economy and the GACH Value-at-Risk (GARCH-VaR) estimation approach. We have carried a statistical evaluation of the eight Brazilian sectoral stock indices during different time ranges so that VaR methodologies could be chosen according to the data. We have analyzed the sectoral Brazilian indices during a common time range where we have realized VaR backtests using recent data. The results of the study reveals that VaR may be an effective tool on minimizing risk exposure and potentially to avoid losses when trading in the Brazilian stock market. Furthermore, we have showed that different sectors of the Brazilian economy have significantly different risk behavior. In particular, the consumption and industrial sectoral indices presented the best risk performance. In this sense, we highlight that this type of analysis would be useful to small lenders/investors in evaluating the attractiveness of lending/investing on the Brazilian stock market.
Economic and Management Tool for Assessing Wild Blueberry Production Costs and Financial Feasibility
Authors: Esau Travis J. , Zaman Qamar U. , MacEachern Craig , Yiridoe Emmanuel K. , Farooque Aitazaz A.
Published: October 2019

Abstract. The wild blueberry industry is facing record low berry prices that has resulted in major concerns for growers, especially in Atlantic Canada and the United States. Farm input and other costs to produce wild blueberries continue to increase, while farmers face record low blueberry prices (in 2016 and 2017). The cost-price squeeze has prompted growers to look for innovative methods to remain financially viable and sustainable. To ensure profitable farm operations, farmers should keep detailed production, management, and financial records that can be used to estimate production, harvest, and marketing costs, but such data and records are not typically compiled by wild blueberry farmers. Spreadsheet-based enterprise budgeting tools have been developed for specific crops by provincial and state extension specialists in Canada and the United States. However, currently there is no such decision tool that accounts for the unique two-year production cycle of wild blueberries, which farmers can use to compile and evaluate input use and rates, and assess production costs and farm economic performance. Keywords: Click here to enter keywords and key phrases, separated by commas, with a period at the end
Molecular Structural and Vibrational Spectroscopic Assignments of 5-(4- Methoxyphenyl)-3-(1-methylindol-3-yl)- isoxazole using DFT Theory Calculations
Authors: Jani Matilda J. , Abbs Fen Reji T.F.
Published: October 2019

In an effort to evaluate and design fast, accurate density functional theory (DFT) methods for 5-(4-methoxyphenyl)-3-(1-methylindol- 3yl)isoxazole compound was done using Gaussion’ 09 program package using B3LYP method with the 6-31G basis set, which has been successfully applied in order to derive the optimized geometry, bonding features, harmonic vibrational wave numbers, NBO analysis and Mulliken population analysis on atomic charges in the ground state. Optimized geometries of the molecule have been described and collate with the experimental values. The experimental atomic charges demonstrates adequate concurrence with the theoretical prediction from DFT. The theoretical spectra values have been interpreted and compared with the FT-IR spectra. The calculated highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy gaps also confirm that charge transfer takes place within the molecule.
Microwave-Assisted C-N Coupling for the Synthesis of 2-(2H-1,2,3-Triazol-2-yl)benzoic Acid Scaffold and Novel N-Phenyl-2-(2H-1,2,3- triazol-2-yl)benzamide Derivatives
Authors: Pandya Dhananjay , Naliapara Yogesh
Published: October 2019

We report a novel methodology for the efficient and rapid synthesis of core intermediate 2-(2H-1,2,3-triazol-2-yl)benzoic acid using trans-N,N’-dimethylcyclohexane-1,2-diamine as a catalyst and copper iodide as co-catalyst under microwave irradiations and a series of novel N-phenyl-2-(2H-1,2,3-triazol-2-yl)benzamide derivatives via acid-amine coupling reaction using DCC as a dehydrating agent and DMAP as a base. In comparison to the conventional heating procedure and performing the reaction using different combinations of catalysts and bases, the time of synthesis and efforts are significantly reduced in the present method, which also gave excellent yield. The scaffold and all novel amides were characterized by spectroscopic techniques.
Synthesis of Some New 5-Indolylidene-4- thiazolidinone Derivatives of 1,2,4-triazole as Potent Antioxidant and Antifungal Agents
Authors: Khan Takallum , Yadav Ritu
Published: October 2019

A series of 1,2,4-triazolyl-4-(5-indolylidene)-thiazolidinone derivatives were synthesized and screened for their antifungal and antioxidant activity. Among these synthesized compounds 3d, 3g showing good antifungal activity and compounds 3b, 3d, 3f and 3h have high % antioxidant activity with lower IC50 value of 11.21, 20.89, 17.51 and 14.05 respectively. We report the antioxidant potential of the said class of compound in which free radical is generated by methelenic and 2nd carbon of thiazolidinone ring. The antifungal activity reported against A. niger, C. albicans and A. flavus. The antioxidant activity of all the synthesized compounds was screened by H2O2, DPPH scavenging and by phosphomolybdenum method with respect to ascorbic acid.
GC-MS Analysis and Molecular Docking of Bioactive Components from Leaves of Guaiacum officinale for Anti-inflammatory Activity
Authors: Pendyala Vijetha , Suryadevara Vidyadhara , Jampani Subbarao , Jala Suhasini
Published: October 2019

Present study was an attempt to investigate the bioactive components present in the leaves of Guaiacum officinale using gas chromatography-mass spectroscopy (GC-MS) analysis and study the anti-inflammatory potential of those constituents using molecular docking studies. GC-MS analysis was done by standard protocol using the equipment JEOL GC MATE II. The identification of components was based on NIST (National Institute of Standards and Technology) Version-11 library as well as comparison of their retention indices. The molecular docking studies were done using the commercial docking software MCULE, 1-click docking. GCMS analysis of the alcoholic extract showed the presence of ten compounds at different retention times. The phytoconstituent 8,11,14- eicosatrienoic acid was present at high concentration with % peak area of 43.3 at a retention time of 19.43 min followed by 5,7-dihydroxy- 8-methoxy flavone (Wogonin) at a retention time of 17.73. All 10 compounds obtained from GC-MS analysis and diclofenac were used as the ligands in this study, with cyclooxygenase-2 (COX-2), phospholipase A2 and interleukin receptor as the molecular targets. in silico Docking studies revealed that the flavanoid Wogonin is having highest binding potential indicated by least docking score of -8.2, -8 and -6.9 kcal/mol on COX-2, phospholipase A2 and interleukin receptor respectively.
Dopaminergic regulation of the hypothalamohypophyseoadrenal system in Icenko-Cushing's disease
Authors: Sysoyeva I I , Dedov I I
Published: October 2019

Nineteen patients with Icenko-Cushing’s disease aged 13 to 18 were examined during an active stage of the disease and during a remission after proton exposure of the hypophysis. Nine normal subjects were controls. Adeno- hypophyseal tropic hormones and hydrocortisone were radioimmunoassayed before and after administration of nakom, a dopaminergic agent. ACTH, hydrocortisone, TTH, parlodel secretion were found decreased and LH increased in patients with Icenko-Cushing’s disease, and no STH increase characteristic of normal subjects was observed. During remission after proton therapy adenohvpophyseal tropic hormones and hydrocortisone secretion normalized in response to nakom. Recovery of STH secretion was observed, but not in all patients, this being confirmed by the absence of a normal somatotropin response in nakom test in 26.32 % of patients.
Corticotropinomas. Early diagnosis and therapy (Lecture)
Authors: Semin V Ye , Trunin Yu K
Published: October 2019

A systematic study of patients who died from various diseases shows the presence of pituitary tumors in 6.8-22.6% of cases. In fact, in many cases, neither doctors nor patients are even aware of their existence. This was first noticed by Costello in 1929. Using standard methods for staining autopsy material, he divided most tumors into 4 groups: chromophobic (52.8%), resembling eosinophilic (7.5%), basophilic (27.2% ), mixed (12.4%).

These were the first steps in the study of pituitary adenomas. With the advent of adequate histochemical techniques, chromophobic adenomas began to be regarded as secretory-active. However, the high incidence of autopsy adenomas contrasts sharply with the relatively low incidence of clinically apparent tumors.
The influence of xenical on indicators of quality of life in patients with metabolic syndrome
Authors: Ametov A. S. , Demidova T. Yu. , Tselikovskaya A. L.
Published: October 2019

Life quality (LQ) is a multifaceted concept that implies how a human being satisfies his/her physical, mental, and social state. LQ is an indicator that depends on the severity of disease, on therapeutic exposures and reflects his/her subjective assessment of the status during treatment or disease. Life quality was assessed in 60 patients with the metabolic syndrome before and 24 weeks after xenical therapy in combination with a moderate low-calorie diet. The study has revealed that the patients have a low life quality that greatly increases after a complex therapy with xenical and a low-calorie diet.
Hypothalamo-pituitary-adrenocortical function in the ontogenesis in rats with hereditary stress-induced arterial hypertension
Authors: Bulygina V. V. , Maslova L. N. , Markel A. L.
Published: October 2019

Functional activity of the hypothalamo-pituitary-adrenocortical system (HPAS) was evaluated over time in rats with hereditary stress-induced arterial hypertension (HSIAH) and normotensive Wistar rats. Peripheral blood plasma corticosterone was measured in rats aged 2, 3, 4, 6, 8, 10, 12, and 18 weeks at rest and after 1-h immobilization in perforated cylinders by competitive protein binding. Basal corticosterone level and HPAS reaction to stress were lower in hypertensive rats than in Wistar rats of the same age. The only exclusion was the age of 4 weeks, when hypertension starts to form in HSIAH rats and their HPAS is more sensitive to emotional stress than that of Wistar rate, this sensitivity being associated with increased adrenal reaction to ACTH. Decreased HPAS reaction to emotional stress in adult HSIAH rats was not associated with disorders in adrenal sensitivity to ACTH.
La Naturaleza de la Ciencia y la Tecnología. Una experiencia para desarrollar el Pensamiento Crítico
Authors: Ortega-Quevedo Vanessa , Gil Puente Cristina
Published: October 2019

La investigación que se presenta tiene como objetivo principal el desarrollo del pensamiento crítico (PC) de estudiantes de educación primaria y la enseñanza de temáticas relacionadas con la naturaleza de la ciencia y la tecnología (NdCyT). Se desarrolla y pone en funcionamiento una secuencia de enseñanza-aprendizaje realizada ad hoc; tanto el análisis como la evaluación de los resultados obtenidos se efectúan a través de un enfoque cuantitativo. La muestra del estudio se conformó por 130 participantes de 6 º curso de educación primaria. Los instrumentos de evaluación utilizados son dos adaptaciones: la primera del cuestionario de opinión sobre ciencia, tecnología y sociedad; y la segunda de una traducción de la prueba de Halpern. Como resultado, se observa que los participantes en el estudio manifiestan mejoras significativas en las habilidades de PC y las concepciones relativas a la NdCyT estudiadas. En consecuencia, la experiencia se considera exitosa.
Oferta y demanda de los recursos turísticos Reserva Forestal Protectora Cerro Quininí (Tibacuy- Cundinamarca)
Authors: Castellanos Menjura Claudia Patricia , Ariza Cortés William , Castrillón Cardona William Fernando
Published: October 2019

Se evaluaron los recursos turísticos y se caracterizó la demanda turística en las zonas de uso público de la Reserva Forestal Protectora del Cerro Quininí (RFPCQ), en la región de Sumapaz (Tibacuy -Cundinamarca-Colombia), con el fin de presentar un diagnóstico de la actividad turística en la zona y convertirse en el insumo para la planeación y concreción de un plan de manejo de la actividad turística. La metodología para la evaluación de la oferta frente a la gestión del turismo se realizó a través de entrevistas, caminatas y talleres con expertos locales y la comunidad de la zona, se obtuvo información para la identificación y clasificación de los recursos turísticos biofísicos, culturales y arqueológicos. De otro lado, se evaluó la demanda de estos recursos con la aplicación de encuesta para obtener el perfil de los visitantes cuyos datos se analizaron por medio de la técnica de Análisis de Correspondencias Múltiples que presentó información sobre tendencias y preferencias. La correlación entre la oferta de los recursos y la demanda se articularon en un análisis DOFA que permite la toma de decisiones frente al turismo como una estrategia de conservación y protección en el área de estudio. Con los resultados se obtiene el diagnóstico de la oferta y demanda turística, que sirve como base para el diseño del plan de manejo turístico orientado a las necesidades y conservación de la RFPCQ.
Comparison of decision trees used in data mining
Authors: Aksu Gökhan , Doğan Nuri
Published: October 2019

The purpose of this study is to compare decision trees obtained by data mining algorithms used in various areas in recent years according to different criteria. In the study, similar and different aspects of the decision trees obtained by different methods for classifying the students as successful and unsuccessful in terms of science literacy were revealed with the help of 12 independent variables included in the PISA 2015 student survey. Data collected across Turkey, from a total of 5895 students in the age group of 15, were analyzed in Java-based Weka software, which has an open source code. As a result of the analysis, it was found that the most successful algorithms in terms of correct classification rate were respectively Logistic Model, Hoeffding Tree, J.48, REPTree and Random Tree. In addition, regarding the decision trees obtained by different learning algorithms, variables that have been effective in the classification were found to be different. According to the results, it was concluded that independent variables found to be effective in the classification of the students for the decision trees obtained by different algorithms differed from each other and it was suggested to report the finding of more than one algorithm instead of those of only one algorithm.
ICAO’s ROLE IN ENVIRONMENTAL PROTECTION AND ITS SHORTCOMINGS UNDER RAPID GROWTH OF AVIATION INDUSTRY
Authors: Mahoro Jean Claude Geofrey
Published: October 2019

The growth of the aviation sector has significantly contributed to the global interconnectivity since World War II and presented a strong need for regulation. The Chicago Convention is the first air law that shaped the aviation industry. With that, the United Nations General Assembly set up the International Civil Aviation Organisation (ICAO) with responsibilities that could realise the aviation’s ideal. Despite this development, environmental protection was not a serious concern. However, aviation emissions and noise were later documented to be a serious threat to human health and welfare. ICAO, in its remits, has played a significant role in by establishing a regulatory framework through its policies and standards. With doctrinal method, the researcher discusses those policies and standards in the environmental perspective and their shortcomings in the prevention of GHG emissions and aircraft noise. He also reflects the importance of the United Nations Framework Convention on Climate Change (UNFCCC) 1992 and Kyoto Protocol 1997. Considerably, this paper highlights some areas that need improvements such as ICAO policies and standards’ implementation mechanisms, Global Market-Based Measure (GMBM), Radio Frequency (RF) spectrum, and conventional framework in ICAO. Hence, the researcher recommends respective stakeholders to enhance their partnership by embracing the concept of sustainability in the aviation industry.
Mapping the Alternative Locations of Street Vendor Stabilization in Surakarta, Indonesia
Authors: Rahayu Murtanti Jani , Buchori Imam , Widjajanti Retno , Putri Rufia Andisetyana
Published: October 2019

The arrangement of street vendors is continuously undertaken by the government of Surakarta City for the sake of attaining the city order and public welfare. The inclination of the Stabilization success level in achieving the goal of street vendor arrangement strategy indicates that the location characteristics conforming to the street vendors’ preferences become one of the determinations in terms of the arrangement success. This article aims at mapping the alternative locations of street vendor Stabilization in Surakarta by applying the spatial analysis resting upon Geographic Information System (GIS) by means of two stages. They encompass: 1) identifying the conditions of the existing street vendor Stabilization locations, and 2) formulating the alternative locations of street vendor Stabilization based on the criteria which entail the proximate main activities, the crowds of environment, and the availability of state-owned land. The result of spatial analysis indicates that there are 19 alternative locations in Surakarta which are aligned with the criteria and can be utilized for new street vendor Stabilization locations.
p-Harmonic Functions in ℝ
N

+ with Nonlinear Neumann Boundary Conditions and Measure Data
Authors: Aguirre Natham
Published: October 2019

We study a concept of renormalized solution to the problem

{

-

Δ
p

⁢
u

=
0

in 
⁢

ℝ
+
N

,

|

∇
⁡
u

|

p
-
2

⁢

u
ν

+

g
⁢

(
u
)

=
μ

on 
⁢

∂
⁡

ℝ
+
N

,

\begin{cases}-\Delta_{p}u=0&\mbox{in }{\mathbb{R}}^{N}_{+},\\ \lvert\nabla u\rvert^{p-2}u_{\nu}+g(u)=\mu&\mbox{on }\partial{\mathbb{R}}^{N}_% {+},\end{cases}

where

1
<
p
≤
N

{1

0

}

{{\mathbb{R}}^{N}_{+}=\{(x^{\prime},x_{N}):x^{\prime}\in{\mathbb{R}}^{N-1},\,x% _{N}>0\}}

,

u
ν

{u_{\nu}}

is the normal derivative of u, μ is a bounded Radon measure, and

g
:

ℝ
→
ℝ

{g:{\mathbb{R}}\rightarrow{\mathbb{R}}}

is a continuous function. We prove stability results and, using the symmetry of the domain, apriori estimates on hyperplanes, and potential methods, we obtain several existence results. In particular, we show existence of solutions for problems with nonlinear terms of absorption type in both the subcritical and supercritical case. For the problem with source we study the power nonlinearity

g
⁢

(
u
)

=

-

u
q

{g(u)=-u^{q}}

, showing existence in the supercritical case, and nonexistence in the subcritical one. We also give a characterization of removable sets when

μ
≡
0

{\mu\equiv 0}

and

g
⁢

(
u
)

=

-

u
q

{g(u)=-u^{q}}

in the supercritical case.
Social Status Perception and Individual Social Capital: Evidence from the US
Authors: Bucciol Alessandro , Cicognani Simona , Zarri Luca
Published: October 2019

This paper provides evidence that individual social capital contributes to our understanding of where individuals locate themselves in the social ladder, also when their objective location within society (measured in terms of income, wealth, education and job) is considered. Using large-scale longitudinal data from the US Health and Retirement Study, we assess individual social capital by means of a multidimensional approach and consider (number, intensity and quality of) respondents’ friendships, prosocial behavior, social engagement and neighborhood cohesion. Our findings indicate that individual social capital plays a role in affecting subjective status, as self-perceived status correlates positively with neighborhood cohesion and negatively with negative support from friends, after controlling for objectively measured social status.
On Equilibrium Existence in a Finite-Agent, Multi-Asset Noisy Rational Expectations Economy
Authors: Carpio Ronaldo , Guo Meixin
Published: October 2019

We introduce a novel method of proving existence of rational expectations equilibria (REE) in multi-dimensional CARA-Gaussian environments. Our approach is to construct a mapping from agents’ initial beliefs (which are characterized by a positive semidefinite matrix), to their updated beliefs, after reaching and observing equilibrium; we then show Brouwer’s fixed point theorem applies. We apply our approach to a finite-market version of Admati (1985), which is a multi-asset noisy REE asset pricing model with dispersed information. We present an algorithm to numerically solve for equilibrium of the finite model, as well as several examples illustrating the difference in equilibrium behavior between the finite and infinite models. Our method can be applied to any multi-dimensional REE model with Gaussian uncertainty and behavior that is linear in agents’ information.
On the Parameter Choice in the Multilevel Augmentation Method
Authors: Yang Suhua , Luo Xingjun , Zeng Chunmei , Xu Zhihai , Hu Wenyu
Published: October 2019

In this paper, we apply the multilevel augmentation method for solving ill-posed Fredholm integral equations of the first kind via iterated Tikhonov regularization method.
The method leads to fast solutions of the discrete regularization methods for the equations.
The convergence rates of iterated Tikhonov regularization are achieved by using a modified parameter choice strategy.
Finally, numerical experiments are given to illustrate the efficiency of the method.
Integral operators, bispectrality and growth of Fourier algebras
Authors: Casper W. Riley , Yakimov Milen T.
Published: October 2019

In the mid 1980s it was conjectured that every bispectral meromorphic function

ψ
⁢

(
x
,
y
)

{\psi(x,y)}

gives rise to an integral operator

K
ψ

⁢

(
x
,
y
)

{K_{\psi}(x,y)}

which possesses a commuting differential operator.
This has been verified by a direct computation for several families of functions

ψ
⁢

(
x
,
y
)

{\psi(x,y)}

where the commuting differential operator is of
order

≤
6

{\leq 6}

. We prove a general version of this conjecture for all self-adjoint bispectral functions of rank 1
and all self-adjoint bispectral Darboux transformations of the rank 2 Bessel and Airy functions.
The method is based on a theorem giving an exact estimate of the second- and first-order terms of
the growth of the Fourier algebra of each such bispectral function. From it we obtain
a sharp upper bound on the order of the commuting differential operator for the
integral kernel

K
ψ

⁢

(
x
,
y
)

{K_{\psi}(x,y)}

leading to a fast algorithmic procedure
for constructing the differential operator; unlike the previous examples its order is arbitrarily high.
We prove that the above classes of bispectral functions are parametrized by infinite-dimensional
Grassmannians which are the Lagrangian loci of the Wilson adelic Grassmannian and its analogs
in rank 2.
Of Human Seismographs: The Multifaceted Roles of Pictures in the Meaning Making of Earthquakes
Authors: Leikam Susanne
Published: October 2019

This article investigates the multifaceted roles that pictorial representations of the human body have played in earthquake visualizations. From the first conventional repertoires in early modern Europe to the photographic iconographies of the early-twentieth-century United States, human bodies have served as tangible proxies—human seismographs—visualizing not only the actual intensity of the seismic forces but also the severe disruption of contemporary cultural ideas, beliefs, and worldviews. As a general pictorial motif, the human body moreover allows viewers to emotionally identify and develop empathy, enhancing the pictures’ cultural efficacy. Drawing on samples from San Francisco’s earthquake of 1906, the study shows how the staging of bodies has stayed a central signifier of the cultural disruption even after seismology brought about the demystification of earthquakes. With the financialization of earthquakes and the shift of the public’s attention to the aftermath of earthquakes, human bodies became materialized ideology, strategically appropriated in order to promote political, economic, and ideological agendas. As such, the human body emerges as a juncture in the popular earthquake iconographies linking—but also complicating—competing categories such as, for instance, mind and matter, private and public, local and (trans)national, individual and collective.
Reproducing Kernel Hilbert Space and Coalescence Hidden-variable Fractal Interpolation Functions
Authors: Prasad Srijanani Anurag
Published: October 2019

Reproducing Kernel Hilbert Spaces (RKHS) and their kernel are important tools which have been found to be incredibly useful in many areas like machine learning, complex analysis, probability theory, group representation theory and the theory of integral operator. In the present paper, the space of Coalescence Hidden-variable Fractal Interpolation Functions (CHFIFs) is demonstrated to be an RKHS and its associated kernel is derived. This extends the possibility of using this new kernel function, which is partly self-affine and partly non-self-affine, in diverse fields wherein the structure is not always self-affine.
Convergence and stability of Fibonacci-Mann iteration for a monotone non-Lipschitzian mapping
Authors: Aggarwal Sajan , Uddin Izhar
Published: October 2019

In this paper, we prove strong convergence and Δ−convergence of Fibonacci-Mann iteration for a monotone non-Lipschitzian mapping (i.e. nearly asymptotically nonexpansive mapping) in partially ordered hyperbolic metric space. Moreover, we prove stability of Fibonacci-Mann iteration. Further, we construct a numerical example to illustrate results. Our results simultaneously generalize the results of Alfuraidan and Khamsi [Bull. Aust. Math. Soc., 2017, 96, 307–316] and Schu [J. Math. Anal. Appl., 1991, 58, 407–413].
Combustion Characteristics and Kinetics Study of Pulverized Coal and Semi-Coke
Authors: Yang Guisheng , Yang Zhihong , Zhang Jinliang , Yang Zhanhai , Shao Jiugang
Published: October 2019

Combustion process of bituminous coal, steam coal, anthracite (AC) and semi-coke were investigated through thermogravimetric analysis method and influence of metamorphic grade as well as heating rate on combustion characteristics were analyzed. Results show that combustion performance could not be represented by single combustion characteristic parameter. Through analysis of comprehensive combustion characteristic indexes, with increase of metamorphic grade combustion performance of coal is lowered, and combustion performance of semi-coke and AC are close to each other. With increase of heating rate, combustion curves move into high temperature region and comprehensive combustion characteristic indexes are increased, which show that the combustion performance is improved. Random pore model (RPM), unreacted shrinking core model (URCM) and volume model were used to calculate kinetic parameters of combustion process. Results show that RPM has the best performance to represent combustion process of the four samples and through calculation by RPM kinetic energy of combustion process for all samples are between 43.08 and 99.43 kJ/mol, and there is compensation effect during combustion process.
Neutralism, Naturalism and Emergence: A Critical Examination of Cumpa’s Theory of Instantiation
Authors: Forrest Peter
Published: October 2019

In his “Are Properties, Particular, Universal, or Neither?” Javier Cumpa argues that science not metaphysics explains how properties are instantiated. I accept this conclusion provided physics can be stated using rather few primitive predicates. In addition, he uses his scientific theory of instantiation to argue for Neutralism, his thesis that the “tie” between properties and their instances implies neither that properties are particular nor that they are universals. Neutralism, I claim, is a thesis that realist about universals have independent reason to accept and their opponents have reason to reject. So, neutralism is not neutral on the topic of whether properties are universals. Nor is Cumpa’s Theory of Instantiation as naturalistic as he claims. I argue that although compatible with Ontological Naturalism, his theory provides a precedent for the non-naturalistic emergence of mental properties. Finally, I argue that because his theory requires a simple physics it presupposes a more rationalist epistemology than that of Methodological Naturalism.
Word order of numeral classifiers and numeral bases
Authors: Her One-Soon , Tang Marc , Li Bing-Tsiong
Published: October 2019

In a numeral classifier language, a sortal classifier (C) or a mensural classifier (M) is needed when a noun is quantified by a numeral (Num). Num and C/M are adjacent cross-linguistically, either in a [Num C/M] order or [C/M Num]. Likewise, in a complex numeral with a multiplicative composition, thebasemay follow the multiplier as in [n×base], e.g.,san-bai‘three hundred’ in Mandarin. However, the base may also precede the multiplier in some languages, thus [base×n]. Interestingly, base and C/M seem to harmonize in word order, i.e., [n×base] numerals appear with a [Num C/M] alignment, and [base×n] numerals, with [C/M Num]. This paper follows up on the explanation of the base-C/M harmonization based on the multiplicative theory of classifiers and verifies it empirically within six language groups in the world’s foremost hotbed of classifier languages: Sinitic, Miao-Yao, Austro-Asiatic, Tai-Kadai, Tibeto-Burman, and Indo-Aryan. Our survey further reveals two interesting facts: base-initial ([base×n]) and C/M-initial ([C/M Num]) orders exist only in Tibeto-Burman (TB) within our dataset. Moreover, the few scarce violations to the base-C/M harmonization are also all in TB and are mostly languages having maintained their original base-initial numerals but borrowed from their base-final and C/M-final neighbors. We thus offer an explanation based on Proto-TB’s base-initial numerals and language contact with neighboring base-final, C/M-final languages.
High-Throughput Characterization of Structural and Photoelectrochemical Properties of a Bi–Mo–W–O Thin-Film Materials Library
Authors: Nowak Mona , Gutkowski Ramona , Junqueira Joao , Schuhmann Wolfgang , Ludwig Alfred
Published: October 2019

A Bi–W–Mo–O thin-film materials library was fabricated by combinatorial reactive magnetron sputtering. The composition spread was investigated using high-throughput methods to determine crystalline phases, composition, morphology, optical properties, and photoelectrochemical performance. The aurivillius phase (Bi2O2)2+ (BiM(W1−NMoN)M−1O3M+1)2− is the predominantly observed crystal structure, indicating that the thin films in the library are solid solutions. With increasing amounts of Mo ≙ 7–22% the diffraction peak at 2θ = 28° ≙ [131] shifts due to lattice distortion, the photoelectrochemical activity is increasing up to a wavelength of 460 nm with an incident photon to current efficiency (IPCE) of 4.5%, and the bandgap decreases. A maximum photocurrent density of 31 μA/cm2 was measured for Bi31W62Mo7Oz at a bias potential of 1.23 V vs. RHE (0.1 M Na2SO4).
Characterizing different team sports using network analysis
Authors: Korte Florian , Lames Martin
Published: October 2019

Team sports are complex dynamic systems based on the frequent interaction of various players. Recently, social network analysis has been introduced to the study of sports dynamics in order to quantify the involvement of individual players in the interplay and to characterize the organizational processes used by teams. Nonetheless, only a limited set of team sports has been assessed to date, and the focus of most studies has been on the application of small sets of network metrics to a single sport. Our study aims at comparing the network patterns of different team sports in order to contribute to the understanding of their underlying nature. It considers three invasion games, namely professional matches from basketball, football and handball. By applying relevant centrality measures and minimum spanning trees a first comparison between the nature of interplay in various team sports is offered as well as a deeper understanding of the role of different tactical positions in each sport. The point guard in basketball, defensive midfielder in football and center in handball are identified as the most central tactical positions. Direct interplay is most balanced in football followed by basketball and handball. A visualization of the basic structure of interplay for each sport is achieved through minimum spanning trees.
Practicing sports in lucid dreams – characteristics, effects, and practical implications
Authors: Schädlich Melanie , Erlacher Daniel
Published: October 2019

In a lucid dream the dreamer is aware of the dream state and can carry out actions deliberately. Lucid dream practice (LDP) is the rehearsal of movements during lucid dreams and constitutes a specific form of mental practice. Previous studies demonstrated that LDP can enhance physical performance. To gain deeper insight into LDP on a qualitative level, sixteen semi-structured interviews were conducted with lucid dreamers from different countries. Inductive content analysis revealed that many different sports and movements can be practiced in lucid dreams. LDP experiences were very realistic, including kinesthetic perception. Required equipment or sparring partners usually were available or could be created and adjusted by the athletes. Thirteen interviewees (81.3%) reported positive effects of LDP. In particular, 10 participants reported to have improved their physical performance through LDP, confirming findings of previous studies. Other positive effects were, for example, strengthened confidence, insights for physical practice (PP), improved flexibility, and positive emotions. The results also demonstrate the special possibilities of LDP like deliberate manipulation of practice conditions, speed, and perspective. Furthermore, problems occurring during LDP are described and how they can be dealt with. Based on the results, practical advice for interested athletes is provided. In conclusion, the present study demonstrates the great potential of LDP for sports practice. LDP could also be applied in other areas that involve motor learning, like rehabilitation, music, or surgery. The present study complements previous LDP findings and provides input and new ideas for future LDP studies. Furthermore, it is an important contribution to general MP research. Findings from LDP research–a small but growing field–should be incorporated into conceptual discussions on MP. Also, by extending LDP research, athletes and coaches could become more aware of this unique and effective method and could start to integrate it into sports practice.