bluuebunny/crossref_metadata_2025 huggingface dataset:
O ensino remoto na percepção discente: desafios e benefícios
Authors: Silva Ana Carolina Oliveira , Sousa Shirliane De Araújo , Menezes Jones Baroni Ferreira de
Published: December 2020

A pandemia do novo corona vírus modificou a atuação de diversos setores em todo o mundo, entre eles a educação, obrigando pessoas e instituições a remodelarem suas atividades, cumprindo o distanciamento social, como prevenção à disseminação do vírus. No setor educacional, foi implantado o ensino remoto emergencial, como possibilidade de continuação das atividades escolares. Nesse cenário, a pesquisa pretende compreender, na visão de discentes brasileiros, quais os méritos e deméritos do Ensino Remoto Emergencial (ERE) para o contexto educacional. A pesquisa é caracterizada como um estudo de caso qualitativo, que teve a participação de 144 discentes mediante questionário on-line, no qual foi notado insatisfação, relacionados não só ao acesso à internet e equipamentos, mas também, à modalidade de ensino imposta, afetando a qualidade do ensino e da aprendizagem. Entretanto, também são apontados benefícios, como flexibilidade de horários e diminuição de gastos. Assim, conclui-se que o ERE ainda precisa ser repensado, sendo baseado nas necessidades sociais, culturais, econômicas e psicológicas dos discentes, e não somente, em questões operacionais e teóricas. Ressaltamos que a pesquisa está vinculado ao projeto de pesquisa cadastrado na Plataforma Brasil sob o número 33812620.5.0000.5528 e aprovado com o parecer 4.121.645 de 29 de junho de 2020.
Educar em tempos de incertezas: a implementação do ensino remoto na rede municipal de Floriano-Piauí
Authors: Martins Andréia , Alves Cavalcanti Agata Laisa Laremberg , Dourado Anne Caroline Soares
Published: December 2020

A Pandemia da COVID-19 provocou profundas mudanças no contexto educacional do Brasil a partir da instauração do surto da doença e das orientações para a contenção do vírus através do isolamento social. Nesse estudo, partimos da seguinte questão norteadora: como ocorreu o planejamento e quais ferramentas foram usadas para a implementação do Ensino Remoto pela SME de Floriano-PI? O artigo tem como objetivo apresentar e analisar os documentos produzidos pela Secretaria Municipal de Educação (SME) de Floriano-PI para o enfrentamento da Pandemia da COVID-19 nas escolas de Educação Infantil e Ensino Fundamental. O trabalho se insere no campo da História do Tempo Presente, utilizando como fonte documental decretos, circulares, textos e normativas produzidos pela SME de Floriano para regulamentar as aulas não presenciais.
Remoto, mas não distante: a reinvenção do ensino na Educação Superior em tempos de COVID-19
Authors: Silva Carla Cristie De França , Freitas Lêda Gonçalves de
Published: December 2020

O presente artigo tem como principal objetivo investigar quais foram os desafios e as soluções para se reinventar o ensino na Educação Superior frente ao cenário avassalador de contaminação pelo COVID-19, usando as Tecnologias Digitais da Informação e Comunicação (TDICs). Os dados foram coletados por meio de questionário eletrônico e entrevistas. A pesquisa contou com a participação de 41 estudantes. As informações foram sistematizadas e analisadas por meio da técnica de análise de conteúdo, proposta por Bardin (2010), possibilitando a identificação de três categorias: 1) Utilização das TDICs nos processos de ensino e aprendizagem, 2) Mediações pedagógicas necessárias ao desenvolvimento do estudante e 3) Autonomia discente. Os resultados revelaram que muitos estudantes subutilizavam as tecnologias digitais e que a pandemia oportunizou mudanças atitudinais. Aos docentes foi necessária a reinvenção das estratégias didáticas para o ensino remoto bem como a utilização das TDICs em espaços colaborativos que fomentaram nos discentes o protagonismo, o exercício da autonomia e a emancipação intelectual.
A Disseminação da Produção Técnica/Tecnológica Gerada em Programas Stricto Sensu Profissionais
Authors: Martens Cristina Dai Prá , Pedron Cristiane Drebes
Published: December 2020

Em 2019 a IPTEC apresenta algumas mudanças em sua estrutura de editoria. Gostaríamos de iniciar o editorial da 11ª edição agradecendo ao trabalho do Prof. Leandro Alves Patah, que muito contribuiu com a revista IPTEC como Editor Chefe, desde a sua criação, em 2013, tendo publicado 10 edições da revista. Sua expertise em Gerenciamento de Projetos também muito contribuiu para o Programa de Pós-Graduação em Gestão de Projetos – PPGP da UNINOVE, contexto onde a IPTEC foi criada e é desenvolvida.Recentemente, assumimos a editoria da Revista IPTEC com o desafio de dar maior visibilidade a este periódico que tem como missão disseminar a produção intelectual aplicada à prática profissional, nas áreas de inovação, gerenciamento de projetos, desenvolvimento de tecnologias e sustentabilidade. Esse tipo de produção intelectual tem sido gerado especialmente em programas de pós-graduação stricto sensu de caráter profissional, quais sejam os Mestrados Profissionais e os Doutorados Profissionais.
Mineração de Dados em um Processo de Seleção de Pessoas
Authors: Sousa Ítalo Alberto do Nascimento , Spina Edison , Vidal Antonio Geraldo da Rocha
Published: December 2020

Este relato tecnológico consiste em uma investigação do uso de técnicas de mineração de dados em uma das principais frentes da Gestão de Recursos Humanos, a seleção de pessoas. Ele é desenvolvido por meio de um estudo de caso em uma Organização da Sociedade Civil, onde métodos de exploração de dados são aplicados em um processo de seleção de pessoas. Avaliadores da organização de estudo indicam que o processo de avaliação dos candidatos possui muitos critérios de seleção, com diferentes graus de importância, e que no momento da decisão todos são considerados iguais, o que traz incertezas e tornam a seleção mais subjetiva. Nesse contexto, o objetivo desta pesquisa é tornar a seleção mais rápida e eficiente por meio da descoberta dos principais critérios de seleção com o auxílio do uso de mineração de dados. Com isso, almeja-se melhorar a aderência dos candidatos selecionados de acordo com os objetivos da seleção, de forma que ele atenda com mais assertividade aos requisitos estipulados pela organização. Tem-se também como objetivo, reduzir o esforço dos avaliadores na seleção, por meio da redução de tempo e etapas. Os resultados indicam que alguns critérios de avaliação influenciam mais na tomada de decisão que outros, como os critérios Comprometimento e Trabalho em equipe. Esses critérios podem ser utilizados para suporte na tomada de decisão dos candidatos incertos, pois indicam quais características pesam mais na seleção. O resultado de quais critérios são mais importantes na tomada de decisão são usados na organização, tornando seu processo de seleção mais rápido e assertivo.
Renovar o Modelo de Negócios para Sustentar a Competitividade: Uma Experiência no Setor Moveleiro
Authors: Souza Samuel Aguiar de Castro e , Caldeira Adilson
Published: December 2020

O presente artigo relata a experiência de um projeto realizado com o objetivo de restabelecer a competitividade de uma empresa brasileira do setor moveleiro e propor estratégias para o seu desenvolvimento, de modo a inovar na oferta de valor aos clientes, mediante a revisão do modelo de negócio. A análise das atuais condições do ambiente competitivo possibilitou um diagnóstico para o delineamento de um novo modelo de negócios, caracterizado pela ampliação da oferta de valor aos clientes por meio da concepção mercadológica de criar valor com os consumidores (market with). Com tal orientação, propôs-se a criação de um marketplace que disponibiliza aos clientes, além dos produtos próprios da empresa, benefícios e produtos complementares, de modo a criar valor para o cliente pela comodidade no ato de compra. O compartilhamento da experiência possibilita expandir o conhecimento e, consequentemente, contribuir para o desenvolvimento de tecnologia de gestão, com potencial de replicação em situações equivalentes.
Contribuições de um software ERP para escritórios de arquitetura
Authors: Ferreira Wagner Solivan , Penha Renato , Kniess Claudia Terezinha
Published: December 2020

O objetivo deste relato técnico foi demonstrar os benefícios que um escritório de arquitetura obteve ao utilizar um sistema ERP em suas práticas gerenciais. Para isso, a metodologia de pesquisa utilizada foi qualitativa, com consulta a dados primários, análise de documentos, entrevistas não estruturas e materiais audiovisuais. Os resultados demonstraram a importância do uso do sistema ERP, como processos automatizados, a integração de dados centralizada, o planejamento, controle e contabilização de horas por atividade em cada etapa de projeto. Constatou-se que independentemente do porte do escritório de arquitetura e devido sua característica de armazenar, processar e distribuir as informações dentro de uma organização, o uso de um sistema ERP pode contribuir para aumento de desempenho das práticas gerencias e para estabelecer o melhor preço de seus serviços a seus clientes.
Combatting hate and trolling with love and reason? A qualitative analysis of the discursive antagonisms between organized hate speech and counterspeech online
Authors: Keller Nadine , Askanius Tina
Published: December 2020

An increasingly organized culture of hate is flourishing in today’s online spaces, posing a serious challenge for democratic societies. Our study seeks to unravel the workings of online hate on popular social media and assess the practices, potentialities, and limitations of organized counterspeech to stymie the spread of hate online. This article is based on a case study of an organized “troll army” of online hate speech in Germany, Reconquista Germanica, and the counterspeech initiative Reconquista Internet. Conducting a qualitative content analysis, we first unpack the strategies and stated intentions behind organized hate speech and counterspeech groups as articulated in their internal strategic documents. We then explore how and to what extent such strategies take shape in online media practices, focusing on the interplay between users spreading hate and users counterspeaking in the comment sections of German news articles on Facebook. The analysis draws on a multi-dimensional framework for studying social media engagement (Uldam & Kaun, 2019) with a focus on practices and discourses and turns to Mouffe’s (2005) concepts of political antagonism and agonism to operationalize and deepen the discursive dimension. The study shows that the interactions between the two opposing camps are highly moralized, reflecting a post-political antagonistic battle between “good” and “evil” and showing limited signs of the potentials of counterspeech to foster productive agonism. The empirical data indicates that despite the promising intentions of rule-guided counterspeech, the counter efforts identified and scrutinized in this study predominantly fail to adhere to civic and moral standards and thus only spur on the destructive dynamics of digital hate culture.
Wear: A Serious Problem in Industry
Authors: Swain Biswajit , Bhuyan Subrat , Behera Rameswar , Sanjeeb Mohapatra Soumya , Behera Ajit
Published: December 2020

Wear is the damaging, gradual removal or deformation of material at solid surfaces. Causes of wear can be mechanical or chemical. The study of wear and related processes is known as tribology. Abrasive wear alone has been estimated to cost 1–4% of the gross national product of industrialized nations. The current chapter focuses on types of wear phenomena observed in the industries (such as abrasive wear, adhesive wear, fretting wear, fatigue wear, erosive wear and corrosive wear), their mechanisms, application of surface coating for the protection of the surface from the industrial wear, types of surface coatings, thermal spray coating, types of thermal spray coating and its application in industry to protect the surface from wear. The detail information about the wear phenomena will help the industries to minimize their maintenance cost of the parts.
COVID-19 Infodemic and Indian Media: An Evaluative Study
Authors: Pathak Kinshuk
Published: December 2020

The global widespread of novel COVID-19 also witnessed fake news being circulated in social media. Dealing with these infodemic and providing authentic information was a big challenge for the government and media professionals. The present chapter is an attempt towards this direction to evaluate the role and initiatives of Indian media in dealing with fake news and providing authentic information to the people. A desktop analysis approach of news channels, news websites will be used to conduct the study. The study also lists various credible sources, myth busters and fact checkers on COVID-19.
Consolidation: Autologous Stem Cell Transplantation in Acute Leukemia
Authors: Keklik Karadağ Fatma , Şahin Fahri , Saydam Güray
Published: December 2020

The goal of complete remission (CR) in acute leukemias could be achieved with intensive induction chemotherapy however patients need post remission consolidation strategies such as high-dose chemotherapy, or autologous (ASCT) or allogeneic (allo-SCT) hematopoetic stem cell transplantation for durable response. However, Allo-SCT is getting more attention in last decades because of improvements of conditioning regimens and graft versus host disease (GVHD) prohylaxis strategies and alternatively available donor sources, it is not suitable for all leukemia patients. The patients who would benefit from Allo-SCT or ASCT could be defined more easily by using risk stratification systems and minimal residual disease (MRD) monitoring. ASCT is considered a treatment option even if its use is declining in the world. Herein, we tried to summarize the studies that report the outcomes of ASCT in acute myeloid leukemia (AML) and acute, lymphoblastic leukemia and describe the patients who would be good candidate for ASCT.
Perovskite Nanoparticles
Authors: Gultekin Burak , Kemal Havare Ali , Siyahjani Shirin , Ibrahim Ciftci Halil , Can Mustafa
Published: December 2020

2D perovskite nanoparticles have a great potential for using in optoelectronic devices such as Solar Cells and Light Emitting Diodes within their tuneable optic and structural properties. In this chapter, it is aimed to express “relation between chemical structures and photo-physical behaviours of perovskite nanoparticles and milestones for their electronic applications”. Initially, general synthesis methods of perovskite nanoparticles have been explained. Furthermore, advantages and disadvantages of the methods have been discussed. After the synthesis, formation of 2D perovskite crystal and effects on shape factor, particle size and uniformity of perovskite have been explained in detail. Beside these, optic properties of luminescent perovskite nanoparticles have been summarized a long with spectral band tuning via size and composition changes. In addition, since their different optical properties and relatively more stable chemical structure under ambient conditions, a comprehensive compilation of opto-electronic applications of 2D perovskite nanoparticles have been prepared.
The Ethical Desirability of Geoengineering: Challenges to Justice
Authors: Pamplany Augustine
Published: December 2020

Geoengineering or climate engineering is defined as a deliberate and intentional intervention into the earth system to combat dangerous climate change. Solar Radiation Management (SRM) and Carbon Dioxide Removal (CDR) are two dominant approaches in geoengineering. From an ethical point of view, both these approaches pose serious challenges to justice from the intergenerational, distributive and procedural point of view. Intergenerational equity and the risk-transfer to future generations suggest major challenges to justice in geoengineering. Abdicating our responsibility is a form of injustice to future generations. Unequal distribution of cost and benefits and benefits and harms is a major challenge to distributive justice in SRM. Paying compensation to those harmed by SRM is presented as a way out of ethical deliberations. But there are serious challenges with regard to compensation for SRM, such as, who ought to pay the compensation, who are the beneficiaries and how much to pay. Participation across vulnerable sections alongside indigenous people and their central involvement remains a concern of procedural justice. Food justice is at stake as the adverse impact of SRM on agriculture and food production is considered to be a major challenge.
RGB Spectral Indices for the Analysis of Soil Protection by Vegetation Cover against Erosive Processes
Authors: Antonio Pacheco Gil Henry , de Jesús Montilla Pacheco Argenis
Published: December 2020

The vegetation cover plays a fundamental role in protecting the soil from erosive processes. Many researchers have developed investigations for the calculation of the RUSLE C Factor, with the use of operating bands in the near infrared. With the current advances in Geospatial Technologies, there are a good number of RGB airborne sensors in Unmanned Aerial Vehicles (UVA). The objective of this chapter is to evaluate some RGB indexes, proposed in the literature, for the protection of the soil from erosive processes by vegetation cover, in a region with a high agricultural vocation. The methodology consisted of capturing RGB images in an area of the Ecuadorian coastal region and calculating in thematic indices, within the visible one, which offer the possibility of quickly differentiating vegetation from other types of coverage on the ground. The evaluation allowed to define which indexes present the best results and adaptation to the type of crop or plant mass mapped, and to propose their use for zoning of risk of erosion under the agro-ecological conditions of the study area.
Towards Innovative and Sustainable Construction of Architectural Structures by Employing Self-Consolidating Concrete Reinforced with Polypropylene Fibers
Authors: Zatar Wael , Nguyen Hai
Published: December 2020

Self-consolidating concrete (SCC) has been successfully employed to reduce construction time and enhance the quality, performance, and esthetic appearance of concrete structures. This research aimed at developing environmentally friendly fiber-reinforced concrete (FRC) consisting of SCC and recycled polypropylene (PP) fibers for sustainable construction of city buildings and transportation infrastructure. The addition of the PP fibers to SCC helps reducing shrinkage cracks and providing enhanced mechanical properties, durability, and ductility of the concrete materials. Several mix designs of self-consolidating fiber-reinforced concrete (SCFRC) were experimentally examined. Material and esthetic properties of the SCFRC mixtures that include micro silica, fly ash, and PP fibers were evaluated. Trial-and-adjustment method was employed to obtain practically optimum SCFRC mixtures, mixtures that are affordable and easy to make possessing enhanced compressive strength and esthetic properties. Slump flow and air content testing methods were used to determine the fresh properties of the SCFRC mixtures, and the esthetic properties of the mixtures were also evaluated. The hardened properties of the SCFRC mixtures were examined using three- and seven-day compression tests. The amount of fine/coarse aggregate, water, and other admixtures were varied while the Portland cement content in all mixtures was maintained unchanged. The maximum three-day compressive strength was 43.17 MPa and the largest slump flow was 736.6 mm. Test results showed enhanced material properties such as slump flow, air content and compressive strength values of the SCFRC mixtures and their excellent esthetic appearance. The favorable seven-day compressive strength of the SCFRC mixture, with 4.8 percent air content and 660.4 mm slump flow, is 39.26 MPa. The mixtures’ in this study are proven to be advantageous for potential SCFRC applications in architectural structures including building façades and esthetically-pleasing bridges.
A Model of the Continual Adaptive Online Knowledge Assessment System
Authors: Zlatović Miran , Balaban Igor , Hutinski Željko
Published: December 2020

This chapter presents a model of a novel adaptive online knowledge assessment system and tests the efficiency of its implementation. System enables continual and cumulative knowledge assessment, comprised of sequence of at least two interconnected assessments, carried-out throughout a reasonably long period of time. Important characteristics of the system are: (a) introduction of new course topics in every subsequent assessment, (b) re-assessment of earlier course topics in every subsequent assessment iteration, (c) in an adaptive manner, based on student’s achievements during previous assessments. Personalized post-assessment feedback guides each student in preparations for upcoming assessments. The efficiency has been tested on a sample of 78 students. Results indicate that the proposed adaptive system is efficient on an individual learning goal level.
Efficacy of Blood Donor Selection: Comparing Sero-Prevalence of Transfusion-Transmissible Infections Among Eligible and High-Risk Behavior Deferred Donors in Iran
Authors: Riyahi Sara , Amini-Kafiabad Sedigheh , Minai Tehrani Daryoush , Maghsudlu Mahtab , Alavian Seyed Moayed
Published: December 2020

Background: Eliminating high-risk individuals has a special role in ensuring blood safety. Due to epidemiological, demographic, and even cultural changes in each country, this process should be continuously evaluated and reviewed, if necessary. Objectives: This study aimed to evaluate the impact of the current donor selection procedure on blood safety in Iran. Methods: A total of 2,525 high-risk deferred donors who were referred between 2018 and 2019 were evaluated regarding hepatitis B surface antigen, hepatitis C virus antibody, and human immunodeficiency virus antigen and antibody. All repeatedly reactive samples were evaluated by confirmatory tests. Characteristics' parameters, donor status, and TTI marker rates of the participants and 1,315,871 eligible donors in the indicated period obtained from the national database on blood donors, were compared. Data were analyzed using SPSS version 24.0. Results: The prevalence of HBV, HCV, and HIV in 100,000 deferred donors was 1148, 515, and 119, respectively. This prevalence was 26, 28, and 33-times higher than the eligible donors, respectively. Unlike HBV, its prevalence among males was almost twice that of females among the deferred group. In the eligible group, females had a higher prevalence for HBV and HCV as compared to males. The HCV and HBV (6.7 and 4.3-fold) among deferred first-time donors had a signiﬁcantly higher prevalence compared with the eligible first-time donors (P‐value < 001). Notably, the higher was the education degree, the lower was the prevalence of infection in both groups. Conclusions: Current deferral criteria and donor selection procedure in Iran are an opportunity to eliminate high-risk individuals from the blood donation.
Teucrium polium Alters the Vascular Branching Pattern and VEGF-A Expression in the Chick Extra-Embryonic Membrane Model
Authors: Moeini Elahe , Tavakkoli Hadi
Published: December 2020

Background: The Teucrium polium is used in traditional medicine for the treatment of various diseases, including inflammations, rheumatism, diabetes, and ulcers. While this herb and its aqueous extract have been consumed in Iran for hypoglycemia treatment, medicine has proved several side effects such as hepatitis, vomiting, changes in the kidney functions, and allergic responses. Also, using this herb is not safe during pregnancy or lactation. The chick embryo is a live animal model applicable for assessing the pathological property of herbs. In this regard, some details of the embryonic vascular toxicity of the Teucrium polium were evaluated via a chick embryo model. Objectives: The current study assessed vessels' alteration in the chick's extra embryonic membrane following Teucrium polium treatment. Change in molecular cues involved in early embryonic angiogenesis has also been investigated. Methods: The eggs of the chicken were divided into three equal treatment groups; as follow: first group one: considered as a sham, next groups: herbal extract that eggs injected with T. polium extract of 3 (150 µg/50 µL) or 6 (300 µg/50 µL) mg/kg, respectively. Results: The anti-angiogenic effect of the herb extract in which vessel area, total vessel length, and vascular branching decreased, whereas lacunarity increased in a dose-dependent manner. VEGF-A expression was also down-regulated in herb-exposed extra-embryonic membranes. Concerns regarding the side effects of T. polium during pregnancy were confirmed. Conclusions: We conclude that changes in early vascular expansion and gene expression might finally lead to developmental defects in embryos following consumption of T. polium. Thus, this herb's consumption should be decreased during embryonic development, and clinicians should limit the herb prescription in pregnant women, particularly at dosages > 3 mg/kg.
Sustainable entrepreneurship: Creating opportunities for green products development
Authors: Talić Miljana , Ivanović-Đukić Maja , Rađenović Tamara
Published: December 2020

The paper explains the concept of sustainable entrepreneurship, as a sub-concept of social entrepreneurship. The factors influencing the development of sustainable entrepreneurship are examined on the sample of 12,011 entrepreneurs and small and medium-sized enterprises (SMEs) offering a "green product" in 37 countries. The data used in the study are from the Flash Eurobarometer Report 426 (SMEs, Resource Efficiency and Green Markets). The results revealed that, according to the perception of sustainable entrepreneurs, the biggest impact on starting and developing a business in the environmental sphere can have: financial incentives, measures related to easier market access, technical assistance in the development of "green product", and advisory assistance in marketing and distribution of "green product".
Agricultural sector in economy of Poland in 1950-2020.
Authors: Kowalczyk Stanisław , Kwasek Mariola
Published: December 2020

Agriculture constitutes one of the first and foremost forms of conscious and organised human activity. Its importance for the society and for the economy stems from its main purpose, namely to meet one of the basic human needs - to satisfy hunger. The period of almost 70 years under consideration brought about exceptional change in the case of Polish agriculture. It consisted of a systematic decline in the potential of agriculture in the economy. The factor that is specific to agriculture - land, evolved relatively the least. Land allocated for agricultural purposes reduced for about one quarter. Much deeper changes have taken place in the other two factors, universal from the point of view of the sectoral application, namely work (human resources) and capital. In the post-war period, trade in agri-food products, albeit small, remained of great importance for the development of Polish agriculture and the entire economy. The nature of the links in this area has also undergone significant changes. Since Poland's accession to the European Union, the balance in foreign trade in agri-food products has been positive and has been growing steadily. This means that foreign customers are becoming increasingly interested in agricultural and food products from Poland. The strategic directions of development for Polish agriculture are the production of bovine meat, poultry meat, eggs, milk and milk products, butter, sugar, fruits, vegetables, pulses, potatoes and cereals. Food consumption has also undergone dynamic changes. The main goal of the paper is to define the position of agriculture in the national economy at various stages of development, as well as changing external conditions, including political, social and economic, which affect this position.
Economic effects of investment in dairy farming
Authors: Subić Jonel , Nastić Lana , Roljević-Nikolić Svetlana
Published: December 2020

Dairy farming is the most significant part of cattle raising. During the previous several years the volume of milk production has been maintained at a stable level, while there came to fall in number of dairy cows and number of farms engaged in dairy farming. Although the farms that own just a few heads of dairy cows usually step out the milk production, there are still a small number of farms specialized in dairy farming. The main paper objective is to present the economic effects of investment in the construction and equipping of dairy farm adequate for raising of 12 dairy cows. Economic analysis was based on the use of static and dynamic methods for investment assessment. Besides, there is also conducted the analysis of investment under the risk conditions (use of the break-even analysis). According to gained results (e.g. Internal rate of return, 11.98%, positive value of the Net present value, Payback period shorter than 5 years) the investment implementation is economically justified.
The conservation of traumatic ruins: A sensitive issue to improve urban resilience
Authors: Le Blanc Antoine
Published: December 2020

Preserved urban ruins convey a social and political message, sometimes with great impact. Whereas stakeholders often tend to cancel the traces of disaster, the conservation of ruins has been the consequence of much disputed decisions. Such decisions can be explained by the will to use the conservation of ruins as a preventive tool. Indeed, the conservation of a disaster’s traumatic marks can be a tool to perform urban resilience, since the urban system integrates the trauma, in an open purpose of risk mitigation. However, this instrument of risk management entails major urban planning issues. Many municipalities in various countries have decided to preserve ruins after tragic events. They set up specific restoration and management standards, various aesthetic and technical choices, access and presentation criteria, but they also indicate a political exploitation of the disaster.
Ripoliticizzare le questioni socioecologiche. Intervista a Marco Armiero
Authors: Bandiera Michele , Bini Valerio
Published: December 2020

Intervista a Marco Armiero
The entrepreneurial orientation of women entrepreneurs in the Guadalajara Metropolitan Area as a path to sustainability
Authors: Navarrete-Baez Francisco , Orozco Patricia , Virchez Jorge
Published: December 2020

This work shows the results obtained on a study done to women entrepreneurs of SME located in the Metropolitan Zone of Guadalajara (ZMG), Mexico, with respect to the systematization of business practices oriented to Entrepreneurial Orientation (EO). The theoretical basis was the Business Women, focused at Latin America, the SME behavior in Mexico, and in this way to understand, through these, if they are aimed at business sustainability. The methodology used was a quantitative analysis through to apply a survey of own development to the business women owning of the one SME in the ZMG. The sample was of 48 questionnaires, which included the profile of the businesswoman, and where 33 sustainable development practices. The results obtained through descriptive and inferential statistical analysis. The findings were found that the sustainable development practices developed are not adequate, and that the EO practices that they should have, are below what is desired, showing there are some disadvantages in these practices so that the sustainability of these companies are at risk.
Kinetic of Biogas Production in a Batch Anaerobic Digestion Process with Interference of Preservative Material of Sodium Benzoate
Authors: Sumantri Indro , Hadiyanto Hadiyanto
Published: December 2020

Sodium benzoate is a preservative compounds which are widely used for both food and beverage products. The treatment of waste water containing this compound was normally conducted in a anaerobic digestion (AD) using a batch reactor system at a room temperature. The anaerobic process eventually produced biogas which can be used for bioenergy. This research was aimed to evaluate the production of biogas from by synthetic solution models containing sodium benzoate (SB). The experiment was performed in a variation of Mixed Liquor Suspended Solid (MLSS) of 4.8 and 7.2 g/L, and initial sodium benzoate concentration of 400, 600, and 800 mg/L. The digestion was performed at 60 days, while the biogas content was measured every 2 days. The results indicated a reduction in the cumulative biogas by the addition of sodium benzoate, compared to the control condition. Moreover, the decrease in organic loading rate (OLR) of SB in wastewater follows the first order kinetic with kinetic rate constant (k) was 0.0432 to 0.1254 (day−1) for MLSS of 4.8 g/L and 0.0276 to 0.0372 (day−1) for 7.2 g/L MLSS. Copyright © 2021 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Corrigendum to: Enhanced Long-term Stability and Carbon Resistance of Ni/MnxOy-Al2O3 Catalyst in Near-equilibrium CO2 Reforming of Methane for Syngas Production [15(2), 2020, 331-347]
Authors: Djebarri Baya , Touahra Fouzia , Aider Nadia , Bali Ferroudja , Sehailia Moussa , Chebout Redouane , Bachari Khaldoun , Halliche Djamila
Published: December 2020

According to Authors request (10th December 2020), Corrigendum to: Djebarri, B., Touahra, F., Aider, N., Bali, F., Sehailia, M., Chebout, R., Bachari, K., Halliche, D. (2020). Bulletin of Chemical Reaction Engineering & Catalysis, 15(2), 2020, 331-347 (doi:10.9767/bcrec.15.2.6983.331-347). First Author (Baya Djebarri) is added as member of Corresponding Author because of his largest contribution in the article and his expertise.Correction:The Authors Names were corrected to:Baya Djebarri1,*, Fouzia Touahra2,*, Nadia Aider4, Ferroudja Bali3, Moussa Sehailia2, Redouane Chebout2, Khaldoun Bachari2, Djamila Halliche3 The information detail of Corresponding Authors was corrected to:* Corresponding Authors.   Email: tfafaze256@yahoo.fr (F. Touahra); b.djebarri@univ-boumerdes.dz (B. Djebarri)Copyright © 2020 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Design of a virtual longitudinal observational study in Parkinson’s disease (AT‐HOME PD)
Authors: Schneider Ruth B. , Omberg Larsson , Macklin Eric A. , Daeschler Margaret , Bataille Lauren , Anthwal Shalini , Myers Taylor L. , Baloga Elizabeth , Duquette Sidney , Snyder Phil , Amodeo Katherine , Tarolli Christopher G , Adams Jamie L. , Callahan Katherine F , Gottesman Joshua , Kopil Catherine M. , Lungu Codrin , Ascherio Alberto , Beck James C. , Biglan Kevin , Espay Alberto J. , Tanner Caroline , Oakes David , Shoulson Ira , Novak Dan , Kayson Elise , Ray Dorsey Earl , Mangravite Lara , Schwarzschild Michael A. , Simuni Tanya ,   the Parkinson Study Group AT‐HOME PD Investigators
Published: December 2020

Objective

The expanding power and accessibility of personal technology provide an opportunity to reduce burdens and costs of traditional clinical site‐centric therapeutic trials in Parkinson’s disease and generate novel insights. The value of this approach has never been more evident than during the current COVID‐19 pandemic. We sought to (1) establish and implement the infrastructure for longitudinal, virtual follow‐up of clinical trial participants, (2) compare changes in smartphone‐based assessments, online patient‐reported outcomes, and remote expert assessments, and (3) explore novel digital markers of Parkinson’s disease disability and progression.

Methods

Participants from two recently completed phase III clinical trials of inosine and isradipine enrolled in Assessing Tele‐Health Outcomes in Multiyear Extensions of Parkinson’s Disease trials (AT‐HOME PD), a two‐year virtual cohort study. After providing electronic informed consent, individuals complete annual video visits with a movement disorder specialist, smartphone‐based assessments of motor function and socialization, and patient‐reported outcomes online.

Results

From the two clinical trials, 226 individuals from 42 states in the United States and Canada enrolled. Of these, 181 (80%) have successfully downloaded the study’s smartphone application and 161 (71%) have completed patient‐reported outcomes on the online platform.

Interpretation

It is feasible to conduct a large‐scale, international virtual observational study following the completion of participation in brick‐and‐mortar clinical trials in Parkinson’s disease. This study, which brings research to participants, will compare established clinical endpoints with novel digital biomarkers and thereby inform the longitudinal follow‐up of clinical trial participants and design of future clinical trials.
Ring‐Closing Olefin Metathesis Catalyzed by Well‐Defined Vanadium Alkylidene Complexes
Authors: Belov Dmitry S. , Tejeda Gabriela , Tsay Charlene , Bukhryakov Konstantin V.
Published: December 2020

Vanadium‐based catalysts have shown activity and selectivity in ring‐opening metathesis polymerization of strained cyclic olefins comparable to those of Ru, Mo, and W catalysts. However, the application of V alkylidenes in routine organic synthesis is limited. Here, we present the first example of ring‐closing olefin metathesis catalyzed by well‐defined V chloride alkylidene phosphine complexes. The developed catalysts exhibit tolerance to various functional groups, such as an ether, an ester, a tertiary amide, a tertiary amine, and a sulfonamide. The size and electron‐donating properties of the imido group and the phosphine play a crucial role in the stability of active intermediates. Reactions with ethylene and olefins suggest that both β‐hydride elimination of the metallacyclobutene and bimolecular decomposition are responsible for catalyst degradation.
Cognitive impairment and associations with structural brain networks, endocrine status, and risk genotypes in patients with newly diagnosed prostate cancer referred to androgen‐deprivation therapy
Authors: R. Buskbjerg Cecilie , Zachariae Robert , Buus Simon , H. Gravholt Claus , Haldbo‐Classen Lene , Hosseini S. M. Hadi , Amidi Ali
Published: December 2020

Background

Evidence suggests that patients with prostate cancer (PCPs) receiving androgen‐deprivation therapy (ADT) are at risk for cognitive impairment. Research with other populations with cancer indicates that cognitive impairment may also occur before systemic treatment. The authors assessed cognitive impairment in untreated PCPs referred to ADT and explored associations with structural brain networks, endocrine status, and selected genotypes.

Methods

Forty untreated PCPs and 27 healthy controls (HCs) who completed a questionnaire package underwent neuropsychological testing, magnetic resonance imaging, and blood sampling. Cognitive impairment was defined as a z score ≤−2 on 1 neuropsychological test or ≤−1.5 on 2 neuropsychological tests. Structural brain networks were investigated using diffusion‐weighted imaging and graph theory. Associations of cognitive performance with patient‐reported outcome measures (PROMs), brain networks, testosterone levels, and genotypes (apolipoprotein ε [APOE], catechol‐O‐methyltransferase [COMT], and brain‐derived neurotrophic factor [BDNF]) were explored.

Results

PCPs performed poorer than HCs on 7 of 15 neuropsychological tests and exhibited a higher frequency of cognitive impairment (57.5% vs 22.2%; P ≤ .01 to .03). All neuropsychological outcomes were associated with ≥1 PROM (P ≤ .01 to .04). Compared with the HC group, the PCP group exhibited altered global network organization as well as disrupted regional network characteristics in frontal and temporal regions (P < .01). PCPs had lower testosterone levels (P < .01) than HCs, which correlated with better visuospatial performance (r = −0.33; P = .04). No effects were found of APOE, COMT, or BDNF.

Conclusions

The current results suggest that untreated PCPs may demonstrate cognitive impairment and that psychological and behavioral symptoms (PROMs), as well as impairment in structural brain networks, might be the underlying mechanisms.
Cyanides and Isocyanides of Zinc, Cadmium and Mercury: Matrix Infrared Spectra and Electronic Structure Calculations for the Linear MNC, NCMCN, CNMNC, NCMMCN, and CNMMNC Molecules
Authors: Andrews Lester , Cho Han‐Gook
Published: December 2020

Cadmium atoms from laser ablation react with cyanogen, NC=CN, in excess argon during co‐deposition at 4 K, and even more on UV irradiation of the cold samples. Final annealing to 35 K increases bands at 2187.3 and 2089.2 cm−1 at the expense of weaker bands at 2194.6 and 2092.2 cm−1 through addition of another cadmium atom. Reaction products were identified by comparison with B3LYP and CCSD(T) computed frequencies and energies, through frequency differences between Zn and Cd products, and by cyanogen isotopic substitution. The CN radical, ZnNC, and CdNC were observed on sample deposition. Hg arc ultraviolet (UV) irradiation activates the insertion of Cd and Zn to form the NCCdCN, CNCdNC, NCZnCN and CNZnNC molecules. Next annealing increased the dimetal products NCCdCdCN, CNCdCdNC, NCZnZnCN, and CNZnZnNC at the expense of their single metal analogs. Laser ablated mercury amalgam also produced NCHgCN, NCHg−HgCN, CNHgNC and CNHg−HgNC. The Group12 metals form both cyanide and isocyanide products, and the argon matrix also traps the higher energy but much more intensely absorbing isocyanides. In the isocyanide case bond polarity results in very intense infrared absorptions. Group 12 metals produce shorter M−M bonds in the dimetal cyanides NCM−MCN and isocyanides CNM−MNC than in the M−M itself, and their computed M−M bond lengths compare favorably with those measured for dimetal complexes stabilized by large ring containing molecular ligands.
Chlorophyll a π‐Cation Radical as Redox Mediator in Superoxide Dismutase (SOD) Mimetics
Authors: Orzeł Łukasz , Rutkowska‐Zbik Dorota , van Eldik Rudi , Fiedor Leszek , Stochel Grażyna
Published: December 2020

The extensive speciation of copper(II) chloride in organic solvents varies with concentration, temperature, pressure and oxygen content, providing the ability to switch between different chlorophyll transmetalation pathways. We found that one of them is exceptionally suitable for the formation and stabilisation of the chlorophyll π‐cation radical. This is due to unique redox cycling, which is coupled to the generation and transformation of various reactive oxygen species. In the presence of a proton donor, our system shows behavior which resembles that of superoxide dismutase (SOD). Regardless of light, chlorophyll acts as an electron transfer mediator.
Prevalence and factors influencing reporting of true periodontal chief complaints: A retrospective analysis
Authors: Abdulkareem Ali A. , Imran Nada K. , Abdulraheam Rukhosh H. , Gul Sarhang S.
Published: December 2020

Objectives

To investigate the prevalence of true periodontal chief complaints (CC) and the factors affecting their reporting by patients with periodontal diseases (PD).

Materials and Methods

This cross‐sectional study was based on retrospective analysis of available periodontal records. Different personal and demographic variables were obtained from these records including CC, age, gender, working status, past medical/dental history, smoking status and diagnosis. In addition, clinical parameters of plaque index, gingival index, probing pocket depth (PPD), and number of missing teeth. Periodontal CC were retrieved and divided either into true periodontal (bleeding, tooth mobility, and alteration in gingival color/shape) or others (emergency and esthetic‐related) CC.

Results

A total of 1161 records were included in the final analysis. Results showed that only 287 (24.7%) of patients reported true periodontal CC whereas the remaining 874 (75.3%) patients were not aware about symptoms of PD. Regression modeling indicated that reporting of true CC was positively associated with smoking and PPD but negatively associated with number of missing teeth and gender (male).

Conclusions

Results suggested that recognition of true periodontal CC by the patients was low. Reporting of true periodontal CC was significantly associated with smoking, PPD, female and lower number of missing teeth. These results shed light on the importance of increasing public knowledge about PD which is essential to aid people in recognizing these diseases at early stages.
Lanthanide Isophthalate Metal‐Organic Frameworks: Crystal Structure, Thermal Behavior, and White Luminescence
Authors: Trannoy Virgile , N'Dala‐Louika Isis , Lhoste Jérôme , Devic Thomas , Serier‐Brault Hélène
Published: December 2020

Two novel lanthanide metal‐organic frameworks (LnMOFs), Ln1.14Na0.57(BDC)2(H2O) ⋅ 4H2O (Ln=La3+ or Ce3+, BDC : 1,3‐benzenedicarboxylate), have been synthesized under hydrothermal conditions by using a Ln3+ coordination polymer as precursor. The crystal structure was determined from single crystal X‐ray diffraction. Both compounds are isostructural and contain chains of face‐sharing [LnO10] polyhedra connected by the linkers to form an anionic three‐dimensional network, defining both polar and apolar channels, the latter being occupied by water molecules and Ln3+ and Na+ cations. When doped by optimized content of Eu3+ and Tb3+, the La3+ counterpart exhibits white luminescence emission with CIE parameters equal to (0.3440, 0.3735) at λexc=321 nm, which renders the material attractive for white LED application.
Heat transfer analysis for particle–fluid suspension thermomagnetohydrodynamic peristaltic flow with Darcy–Forchheimer medium
Authors: Imran Naveed , Javed Maryiam , Qayyum Mubashir , Sohail Muhammad , Kashif Muhammad
Published: December 2020

This theoretical analysis explores the effect of heat and mass transfer on particle–fluid suspension for the Rabinowitsch fluid model with the stiffness and dynamic damping effects through Darcy–Brinkman–Forchheimer porous medium. In this study, we also incorporate slip and transverse magnetic field effects. Using low Reynolds number, to neglect inertial forces and to keep the pressure constant during the flow, channel height is used largely as compared with the ratio of length of the wave. A numerical technique is used to solve flow governing system of differential equations. Particular attention is paid to viscous damping force parameter, stiffness parameter, and rigidity parameter; also, the numerical data for thermal profile, momentum, and concentration distribution are presented graphically. Outcomes are deliberated in detail for different fluid models (thinning, thickening, and viscous models). It is found that velocity profile increases for greater values of viscous damping effect and stiffness and rigidity parameter for shear thinning, but conflicting comportment is showed for thickening nature model. Viscous dissipation effects increases the thermal profile for all cases of fluid models. The scope of the present article is valuable in explaining the blood transport dynamics in small vessels while considering the important wall features with chemical reaction characteristics. The current analysis has extensive applications in biomedical engineering field, that is, peristaltic pumps.
Numerical optimization for fluid flow in turboexpander wheel of helium liquefaction plant
Authors: Rajmane Swapnil Narayan , Gupta Manoj Kumar , Sahu Ananta Kumar
Published: December 2020

A radial turbine is one of the vital components of a helium liquefaction plant. The design of a turbine becomes critical due to its compact size and high‐speed configuration. In this study, numerical optimization has been performed for the three‐dimensional steady flow of helium gas in the radial inflow turbine of a helium liquefaction plant at a nominal condition. The mean line design is an appropriate method to obtain the approximate results. The computational fluid dynamics simulation algorithm is adopted in this study to reach the final results and Ansys CFX is used for the simulation. From the analysis, it has been reported that the number of rotor blades was overestimated in the mean line design. Performance parameters like total‐to‐static efficiency and velocity ratio were also found to be optimum numerically under a preliminary design condition. Finally, power of 1.7 kW was achieved at total‐to‐static efficiency of 71.4%. The deviation in analytical and numerical results is within for performance as well as geometric parameters.