bluuebunny/crossref_metadata_2025_split huggingface dataset:
Redesign of stormwater collection canal based on flood exceedance probability using the ant colony optimization: study area of eastern Tehran metropolis
Authors: Lord Sara Azargashb , Ghasabsaraei Mojtaba Hamzeh , Movahedinia Maryam , Shahdany Seied Mehdy Hashemy , Roozbahani Abbas 
Published: July 2021

Abstract
An increase in stormwater frequency following the rapid development of urbanization has drawn attention to the mitigating strategies in recent decades. For the first time, the present study aims to conduct a local rehabilitation in stormwater collecting systems by (i) detecting the critical nodes along with the canal network and (ii) redesigning the critical canal reaches using ant colony optimization (ACO) to create maximum capacity for flood discharge with minimum reconstruction cost while considering the probability of exceedance of the flood as a constraint. Hence, using the SWMM model, the flow in the collection system was simulated, and the inundation points in the study area in the eastern Tehran metropolis were determined. After determining the critical points, the hydraulic stimulation model for the selected canal flows was developed using HEC-RAS software to accurately simulate each critical bridge's flow. Then, the optimal parameters for the canal bed width and canal depth were obtained using ACO and defining a probability objective function using the flood probability exceedance as the redesign constraint. The results from the optimizer were compared with those of the LINGO nonlinear model. Finally, the operational performance of the redesigned system was evaluated using the optimal selected parameters. The results showed that in redesigning the studied canals, the two widening and deepening options are needed to obtain a discharge with sufficient flow capacity in various return periods (RPs). The optimization results for the first to third critical sections for a design discharge with a 100-year RPs showed that the calculated cost was 19.765(*106), 13.327(*106), and 43.139(*106) IR rials (1 USD = 202000 IRR), respectively. For the selected sections, the optimal bed width is 6.97, 8.97, and 10.93 m, and the optimal depth is 3.68, 4.81, and 4.04 m, respectively. The results indicate that the local modification in the eastern flood control canal adequately improved inundation problem reduction in various RPs – i.e., for a 10-year RP, the number of node flooding dropped from 4 to zero, the inundated area from 17% to zero, and the overflow volume from (10–45) to zero. It also reduced overflow volume from (30–65), (43–74), and (70–92) in the status quo to (4–12), (11–27), and (24–36) percent for precipitations with 25, 50 and 100-year RPs, respectively.
Modern vision for critical flow in an egg-shaped section
Authors: Lamia Hachemi Rachedi , Moussa Lakehal , Bachir Achour 
Published: July 2021

Abstract
The critical regime plays a primordial role in the study of gradually varying flows by classifying flow regimes and slopes. Through this work, a new approach is proposed to analyze critical flow regime in an egg-shaped channel. Based on both the definition of Froude number and Achour and Bedjaoui general discharge relationship, a relation between critical and normal depths is derived and then graphically represented for the particular case of a smooth channel characterized by a generating diameter equal to 1 m. The results show the influence of the slope on the frequency of occurrence of the critical regime. At the same time and independently of the flow rate, a very advantageous approach for the calculation of the Froude number has been proposed. The study shows that there are six zones to differentiate the various flow states, namely: on the one hand for steep slopes two subcritical zones interspersed by a supercritical zone and on the other hand for mild slopes a zone corresponding to uniform flow, an area where the flow is probably gradually varied and finally an area where the flow is abruptly varied. Based on the specific energy equation, a validation process concluded that the proposed relationships were reliable.
Miedo al COVID-19 en residentes de un Asentamiento Humano en Puente Piedra, Lima
Authors: Castillo-Zelaya Betsabe Kelita , Gonzales-Nolasco Magaly 
Published: July 2021

Objetivos: Identificar el miedo al COVID-19 en residentes de un Asentamiento Humano en Puente Piedra, Lima. Materiales y métodos: Esta investigación fue desarrollado desde el enfoque cuantitativo, su diseño fue descriptivo-transversal. La población estuvo conformada por 500 participantes. La técnica de recolección de datos fue la encuesta y el instrumento de medición fue la Escala de Miedo al COVID-19 (FCV-19S), que consta de 7 ítems y 2 dimensiones. Resultados: En cuanto a los participantes, los varones representan el 45,4% (n=227) y las mujeres el 54,6% (n=273). En relación miedo al COVID-19, predominó nivel alto con 58% (n=209), seguido del medio del nivel medio en un 21,8% (n=109) y bajo con 20,2% (n=101). En cuanto a las dimensiones, en reacciones al miedo emocional predominó nivel medio con 50,2% (n=252), seguido del alto en un 35,4% (n=177) y bajo con 14,2% (n=71); en expresiones somáticas al miedo predominó el nivel bajo con 48,4% (n=242), seguido del medio en un 42% (n=210) y alto con 9,6% (n=48). Conclusiones: En cuando al miedo al COVID-19 predominó el nivel medio, seguido del alto y bajo. En relación a sus dimensiones, en reacciones al miedo emocional predomino el nivel medio, seguido del nivel alto y bajo; en expresiones somáticas al miedo predomino nivel bajo, seguido del medio y alto. En cuanto al sexo, las mujeres presentaron más miedo al COVID-19 que los participantes varones.
Determinantes do spread de instituições financeiras cooperativas e bancos comerciais no Brasil
Authors: Faleiro Bernardes Gustavo Antonio , Beiruth Aziz Xavier , Brugni Talles Vianna 
Published: July 2021

Objetivo: O presente estudo visa analisar os fatores que determinam o spread de instituições financeiras cooperativas e bancos comerciais, com o intuito de identificar indícios de vantagem competitiva entre cooperativas e bancos.
Metodologia: Considerando a amostra de dados longitudinais, utilizou-se o modelo de efeitos fixos para dados em painéis com propósito de observar várias instituições, com a evidenciação de variáveis cross-section, em diversos períodos de tempo. A amostra foi composta por balanços semestrais conforme estrutura de plano contábil das instituições do sistema financeiro nacional - COSIF, disponível na base de dados do Banco Central do Brasil – If.data, dentro do período de 2010 a 2017.
Resultados: Os resultados apontaram que os spreads das instituições financeiras cooperativas foram menores do que os spreads de bancos comerciais ao longo do período analisado. Não foi identificada uma relação diretamente proporcional entre tributos e spread. O fato das cooperativas não objetivarem lucros podem ter impactado na composição de seus spreads, porém, a isenção fiscal não influenciou a geração de resultados.
Contribuições do Estudo: Este trabalho colabora para comunidade científica por analisar os determinantes de spread para as cooperativas financeiras, visto que foram encontrados poucos estudos na literatura que contemplavam as cooperativas no seu método. Foram realizadas comparações com os bancos comerciais e buscou-se identificar fatores que poderiam ou não representar vantagens competitivas entre ambas instituições financeiras.
Relevância do goodwill e períodos de recessão: evidências no mercado de capitais brasileiro
Authors: Feltes Taise , Vicente Ernesto Fernando Rodrigues , Ribeiro Alex Mussoi 
Published: July 2021

Objetivo: Analisar a relevância do Goodwill para o mercado de capitais brasileiro e verificar possíveis diferenças em períodos de recessão econômica.
Metodologia: Utilizou-se dados econômico-financeiros de companhias que negociam ações na Brasil, Bolsa e Balcão (B3) em períodos trimestrais no intervalo de 2011 a 2018. Para medir a relevância do Goodwill, adotou-se o modelo de avaliação por valor residual que possui alicerce nos estudos de Ohlson (1989) e Ohlson (1995). Para análise dos dados, optou-se pela regressão quantílica, nos quantis 0,10; 0,25; 0,50; 0,75 e 0,90.
Resultados: O mercado reage positivamente ao aumento do Goodwill em todos os níveis (0,10; 0,25; 0,50; 0,75; 0,90) das empresas analisadas, o que sugere que o aumento do seu valor em relação ao ativo implica em aumento do valor de mercado, não apenas em média, mas para todas as empresas, o que converge com os achados de Hartwig (2018) e Faleiro & Souza (2018). Em períodos de recessão econômica, percebe-se que as empresas alocadas nos quantis 0,25, 0,50 e 0,90 são sensíveis a diminuição do valor de mercado, o que demonstra que a crise tem implicações para estas companhias. Além disso, não há diferença significativa da relevância do Goodwill em momentos de crise econômica e dos períodos da inexistência da crise econômica.
Contribuições do Estudo: Como contribuição teórica destaca-se a coleta dos dados de forma mais tempestiva, em que a variável Valor de Mercado foi coletada na data da publicação dos relatórios e o uso da regressão quantílica, uma abordagem diferente, em que pode-se observar em qual faixa a variação do Goodwill é mais relevante para o mercado. Ainda, aponta-se que os resultados do estudo são importantes para os usuários externos, ainda mais ao considerar a discussão que ocorre no IASB acerca do Goodwill.
Utilização de sistemas de informações gerenciais sob a perspectiva de produtores rurais
Authors: Bittarello Adressa , Altoé Stella Maris Lima , Suave Ricardo 
Published: July 2021

Objetivo: Avaliar os reflexos da utilização de Sistemas de Informações Gerenciais (SIG) na gestão das pequenas empresas do ramo da atividade rural.
Metodologia: Nesse estudo, aplicou-se questionários para os produtores rurais que utilizam o sistema contábil convencional, obtendo 37 respostas. Adicionalmente, 7 entrevistas foram realizadas com produtores rurais que passaram a utilizar o SIG para controlar suas atividades.
Resultados: Com o uso da análise das diferenças entre os respondentes que usam ou não o SIG, permitiu-se identificar quais pontos estão atrelados à sua implantação, além de avaliar os benefícios obtidos a partir do sistema utilizado. Os resultados indicam que o uso do SIG refletiu de forma positiva na gestão, sobretudo no que tange ao controle de custos e da cultura, previsões de necessidades, aumento no lucro e auxílio na tomada de decisões.
Contribuições do Estudo: Os achados do estudo esclarecem a implicação prática com o uso do SIG em propriedades rurais, como a receptividade para o uso do sistema e, principalmente, que vantagens com o uso são mais indicadas por respondentes de propriedades que já fazem seu uso. Nesse sentido, reforça-se a necessidade de os empresários contábeis instigarem o uso de ferramentas gerenciais aos produtores rurais que ainda não usam, mas consideram como benéfico o uso dos SIG.
Difficulties of municipalities in the cearense metropolitan region in adhering to the public accounting convergence process: a multi-study
Authors: Moura Thaís da Silva , Nascimento Roberto Sérgio do , Viotto Ricardo 
Published: July 2021

Objective: The purpose of this multi-case study is to evaluate the perceptions of Brazilian municipalities regarding the process of convergence of public accounting to international standards, initiated in 2008, considering the importance of these federated entities in the primary provision of public goods and services to society.
Methodology: It was based on the application of a questionnaire with structured questions applied to the finance departments in 7 (seven) municipalities of the Metropolitan Region of Fortaleza. In addition to this aspect, the municipalities were selected based on the state’s GDP and the level of public investments made by them.
Results: The results were considered consistent by emphasizing that 71% of the municipalities started the convergence process within the deadline established by the National Treasury Secretariat (STN), however only 43% stated they were prepared to apply the NBCASP. One of the main related difficulties refers to the lack of investment in training for the technicians involved and of their own systems to operate the changes determined by the STN.
Contributions of the Study: Effectively, the research proved real difficulties experienced by part of the surveyed municipalities that can compromise the progress of the convergence process in Brazil, aspects which were not considered in the researches previously carried out.
Didactic-pedagogical training of stricto sensu graduate students in accounting sciences from a federal institution of higher education
Authors: Fernandes Thayná de Oliveira , Araújo Valdineide dos Santos , Cavalcanti Paulo Roberto Nóbrega 
Published: July 2021

Purpose: The present study aimed to investigate the didactic-pedagogical graduation in the postgraduate course in Accounting Sciences of a Federal Institution of Higher Education.
Methodology: We sought students graduating from the current postgraduate course (stricto sensu) at the Federal Higher Education Institution (IES) under study and from the Multi Institutional and Interregional Postgraduate Program in Accounting Sciences that remained before the creation of the current IES graduate program, reaching the number of 65 (Sixty-five) graduates by March 2018, of which 42 (forty-two) returned the completed questionnaire. As for the objectives, it is a descriptive research and as for the approach to the problem, it has a qualitative character. Furthermore, at the methodological level, the option for the approach was documentary and field research.
Results: The results were analyzed through content analysis according to Bardin (2011) and descriptive statistics. They present themselves regarding the profile of the graduates, their reflection of their performance as a professor, having observed a gap in teaching methodology and didactic-pedagogical skills in the graduation of the graduates. As for the documentary analysis, it was found that the subjects that target didactic-pedagogical training subjects are treated as electives. In addition to it, the graduates realize that there was an academic training of excellence, with a good deepening of specific knowledge of the several areas not explored in the undergraduate course and with a contribution to the construction of knowledge in the study area. In this scenario, training is continuous, being necessary during all teaching practice, as learning is constant and essential in this profession.
Contributions of the study: The research contributes to the analysis of the academic training received by the graduates of Postgraduate stricto sensu in Accounting Sciences and to reflect on the professor training received by the subjects of the research.
Teaching case: the water I wear
Authors: Ferreira Aracéli Cristina de Sousa , Miranda Luiz Carlos , Queiroz Juliana Molina 
Published: July 2021

Purpose: This case aims to enable students to learn about environmental impacts and their effects and allow them to use methods of economic valuation of the environment to internalize externalities related to environmental and social impacts. The product in question is widely used what can make students identify themselves with the case. Then, they will be more interested in the problem identified in this case which is the non-internalization of externalities (social and environmental impacts).
Methodology: The methodology of this teaching case is qualitative. Students read, discuss and apply the subject. Upon reading the case, students learn the steps of the laundry washing process. Students can identify the direct and indirect environmental and social impacts and their consequences by reading and discussing the case. Finally, they can apply the methods of economic valuation of the environment.
Results: It is possible to identify the social and environmental impacts and analyze and discuss these impacts on management and accounting.
Study Contributions: We hope that people can use this teaching case in undergraduate and graduate courses in environment and sustainability topics and topics related to costs and management.
Carbon Nanotubes Flow Induced by Rotating Stretching Disk with Non-
Linear Radiations and Slip
Authors: Khan Ilyas , Sultana Uzma , Mushtaq Muhammad 
Published: July 2021

Background:
The phenomenon of rotating disks involving flows serves as a crucial
element in the field of fluid mechanics. Owing to its massive practical importance in engineering
and industry, considerable attention is being paid to the extension of the problems associated with
rotating stretching disks. In this regard, Carbon Nanotubes (CNT) are chosen as the best example
of true nano technology. CNTs have an incredible range of applications due to their extraordinary
characteristics. But single rotating-stretching disk with CNTs fluid flow has not been plowed yet.

Objective:
The objective of this work is to outstretch the study of viscous fluid with Carbon
Nanotubes (CNTs) and transfer of heat due to radially stretching and rotating disk contingent to
Navier slip, nonlinear radiations and convective boundary conditions.

Methods:
Cylindrical coordinates are utilized in the modeling and the mathematical formulation of
the flow equations. These flow equations take the form of ordinary differential equations by means
of similarity transformations. The emanated equations are solved by two numerical methods i.e. the
shooting method and the Keller box method respectively. Xue model of carbon nanotubes is
incorporated to carry out the research.

Results:
The acquired solutions are tabulated and precise values of the physical parameters with
excellent matching results are shown. These results are juxtaposed with CNTs of multi-wall and
single-wall carbon nanotubes, while water is taken as a base fluid.

Conclusion:
Results reveal a significant depletion in skin friction with an increase in the slip
parameter. Slip, nonlinear radiation and Biot number proved as liable factors in escalating the rate
of heat transfer.
Drug Repurposing: An Alternative Strategy to Treat COVID-19
Authors: Han Pengyu , zheng Huifang , Wen Pingping , Pan Li , Geng Dan , Sun Dianxing 
Published: July 2021

:
In order to curve the ongoing trend of the COVID-19 pandemic and save more lives, effective
treatments against COVID-19 are urgently needed. Compared to developing new drugs,
which may take too much time, it’s more efficient and cost-effective to repurpose existing drugs in
the treatment of COVID-19. Fortunately, some of the shared features of COVID-19 and other wellknown
diseases make it possible to use old strategies to combat this new challenge. In this paper, we
reviewed various possible strategies of drug repurposing in the treatment of COVID-19 and explored
the possible scientific mechanisms behind each strategy.
Development of Natural Bioactive Alkaloids: Anticancer Perspective
Authors: Patel Ashish , Vanecha Ravi , Patel Jay , Patel Divy , Shah Umang , Bambharoliya Tushar 
Published: July 2021

Abstract:
Cancer is a frightful disease that still poses a 'nightmare' worldwide, causing millions of
casualties annually imposing one of the human race's greatest health-care challenges that entail a
pragmatic treatment strategy. Plants are repositories for new chemical entities and have a promising
cancer research path, supplying 60% of the anticancer agents currently used. However, plants and
plant-derived products revolutionize the field, as they are quick, cleaner, eco-friendly, low-cost, effective,
and less toxic than conventional treatment methods.
Alkaloids are important chemical compounds that serve as a rich reservoir for drug discovery and development.
However, some alkaloids derived from natural herbs display anti-proliferation and antimetastatic
activity on different forms of cancer both in vitro and in vivo. Alkaloids have also been
widely formulated as anticancer medications, such as camptothecin and vinblastine. Based on the information
in the literature, this review focuses on the naturally-derived bioactive alkaloids with prospective
anticancer properties. Still, more research and clinical trials are required before final recommendations
can be made on specific alkaloids.
Effects of Withania somnifera (Ashwagandha) on Stress and the Stress- Related Neuropsychiatric Disorders Anxiety, Depression, and Insomnia
Authors: Speers Alex B. , Cabey Kadine A. , Soumyanath Amala , Wright Kirsten M. 
Published: July 2021

Background:
Withania somnifera (WS), also known as Ashwagandha, is commonly
used in Ayurveda and other traditional medicine systems. WS has seen an increase in worldwide
usage due to its reputation as an adaptogen. This popularity has elicited increased scientific study of
its biological effects, including a potential application for neuropsychiatric and neurodegenerative
disorders.

Objective:
This review aims to provide a comprehensive summary of preclinical and clinical studies examining the neuropsychiatric effects of WS, specifically its application in stress, anxiety, depression, and insomnia.

Methods:
Reports of human trials and animal studies of WS were collected primarily from the
PubMed, Scopus, and Google Scholar databases.

Results:
WS root and leaf extracts exhibited noteworthy anti-stress and anti-anxiety activity in animal
and human studies. WS also improved symptoms of depression and insomnia, though fewer
studies investigated these applications. WS may alleviate these conditions predominantly through
modulation of the hypothalamic-pituitary-adrenal and sympathetic-adrenal-medullary axes, as well
as through GABAergic and serotonergic pathways. While some studies link specific withanolide
components to its neuropsychiatric benefits, there is evidence for the presence of additional, as yet
unidentified, active compounds in WS.

Conclusion:
While benefits were seen in the reviewed studies, significant variability in the WS
extracts examined prevents a consensus on the optimum WS preparation or dosage for treating neuropsychiatric
conditions. WS generally appears safe for human use; however, it will be important to
investigate potential herb-drug interactions involving WS if used alongside pharmaceutical interventions.
Further elucidation of active compounds of WS is also needed.
Phenothiazine Derivatives as Potential Antiproliferative Agents: A Mini-
Review
Authors: Ayogu Jude I. , Nwoba Sunday T. 
Published: July 2021

Abstract:
Research for discovering chemical entities with antiproliferative properties to combat
globally rising cancer cases has witnessed tremendous interest in recent years. Phenothiazines possess
novel antiproliferative potentials and have often be described as crucial sources of scaffolds for
anticancer drug discovery. Some several phenothiazine-hybrid compounds recently synthesised are
effective against various cancer cell lines with improved multidrug resistance. In synthesising these
phenothiazine-derivatives, therapeutic potentials of the phenothiazines are exploited, and they are enriched
by molecular hybridisation with moieties known to possess great pharmacological profiles.
This article critically reviews the anticancer properties of phenothiazine derivatives and focuses on
the possibility of the derivation of the leads for a further spectrum of antiproliferative activities.