bluuebunny/crossref_metadata_2025 huggingface dataset:
A comparative chromosome study on five Minnow fishes (Cyprinidae, Cypriniformes) in Thailand
Authors: Aiumsumang Surachest , Phimphan Sumalee , Suwannapoom Chatmongkon , Chaiyasan Patcharaporn , Supiwong Weerayuth , Tanomtong Alongklod
Published: July 2021

The cytogenetic comparisons of five Minnow species from Thailand were presented here, i.e., Devario regina, D. laoensis, Rasbora paviana, R. aurotaenia and Esomus metalicus. The mitotic chromosomes were prepared directly from renal cells. Conventional staining and Ag-NOR banding techniques were applied to stain the chromosomes. The results revealed that all Minnow fishes studied possessed the same diploid chromosome number (2n) as 50 chromosomes. The fundamental numbers (NF) of D. laoensis, D. regina, R. paviana, R. aurotaenia and E. metalicus are 100, 100, 98, 98, and 98 respectively. Their karyotypes composing of metacentrics-submetacentrics-acrocentrics-telocentrics were as follows: 6-12-32-0 in D. regina, 6-10-34-0 in D. laoensis, 8-16-24-2 in R. paviana, 8-16-24-2 in R. aurotaenia and 8-10-30-2 in E. metalicus. The Ag-NOR banding technique provides the nucleolar organizer regions (NORs) at subtelomeric region of the short arm chromosome in the a submetacentric or acrocentric chromosomes that are located differently in the different chromosome pairs among species.
Karyotype Variation in Eight Cultivars of Indian Dessert Banana (Musa acuminata L.) of Section Eumusa From Odisha, India
Authors: Dehury Shomina , Dehery Subrat Kumar , Das Anath Bandhu
Published: July 2021

Banana (Musa spp.) cultivars especially dessert banana are important cash crop with high market demand all over the world as an integral part of the diet. The need for assessment of cytogenetic characters in Musa cultivars is inevitable as out of thousands of cultivars, cytogenetic characterization of most of them remains unresolved due to difficulties like small chromosome size, diversity in ploidy levels and high cultivar diversity which behave differently to standardized cytogenetic protocols. In this report, somatic chromosome number, detailed karyotype analysis including total chromosome length, volume, form percentage, Interphase Nuclear Volume (INV) were accessed on eight dessert type of Musa accessions from different places of Odisha. All the cultivars studied were found triploid (2n = 33) with a basic chromosome number of x=11. The karyotype formulae were assigned to each cultivar by grouping the chromosome according to their shared characteristics. The total chromosome length ranged from 54.95 µm in cv. Robusta to 81.5 µm in cv. Kathia with symmetric karyotype in all the studied cultivar. Karyotype formula revealed structural alteration of chromosome with Total Form percentage (TF%) variation from 35.65% in cv. Amritapani to 41.68% in cv. Patakpura that confirms more number of nearly median constricted chromosome as compared to sub-median chromosome. The total chromosome volume recorded from 10.78 µm3 in cv. Robusta to 15.99 µm3 in cv. Khatia and the INV varied from 1336.44 µm3 in cv. Dwarf Cavendish to 2048.37 µm3 in cv. Patakpura. The recorded structural variation might be due to differential genome specific condensation of chromosome. Chromosome length and volume found statistically significant among the cultivars.
Chromosome counts of eight Iranian endemic species of Nepeta L. (Lamiaceae)
Authors: Hasaninejad Maryam , Jamzad Ziba , Afsharzadeh Saeid , Saeidi HojJatollah
Published: July 2021

In this survey, the chromosome counts of eight Nepeta L. species were investigated and the karyotypic diversity among these species was studied. The examined species belong to N. cephalotes Boiss. species group, namely N. eremokosmos Rech.f., N. gloeocephala Rech. f., cephalotes Boiss., N. pungens (Bunge) Benth., N. ispahanica Boiss., N. mahanensis Jamzad & Simonds, N. hormozganica Jamzad and N. denudata Benth. collected from different habitats in Iran. The ploidy levels, karyotype formula, chromosome length range, total karyotype length, several karyotype asymmetries values and Stebbins classification were determined in this study. Results showed the same chromosome number, 2n = 2x= 18 for all studied species. The basic chromosome number for the above mentioned species are x = 9. Also, the smallest chromosome length is 1.02 μm in N. mahanensis. The largest chromosome length is 2.3 μm in N. ispahanica. The chromosomes of species were metacentric or submetacentric. According to the Stebbins classification, these species were located into three classes 1A, 2A and 3A. The chromosome numbers for six of studied species are reported here for the first time.
Induction of Autotetraploidy and its effects on morphophysiological traits in some annual and perennial medics
Authors: Ansari Elham , Khosrowshahli Mahmood , Jafari Ali Ashraf , Etminan Alireza
Published: July 2021

In order to study of the effects of polyploidy on morph-physiological traits in some annual and perennial medics, five annual and three perennial diploid medics were subjected to different concentrations of colchicine solution (0.1%, 0.5%, 1% and 2%) in mitosis stage. The induced tetraploids were identified by counting stomata guard cells chloroplasts. The highest survival rate and tetraploidy induction with average values of 80.2% and 74.3% were obtained using 0.1% colchicine concentration. All of the 21 entries (5 annual diploids and their induced tetraploids as M. lupulina, M. radiata, M. rijidula, M. truncatula, M. turbinata, and 3 populations of perennial diploid of M. sativa ssp. Caerulea (Karaj1, Karaj2 and Tehran) and their induced tetraploids and 5 commercial tetraploid alfalfa cultivars (Bami, Hamadani, Baghdadi, Ghareyongeh and Renger) grown in pots in a glasshouse experiment using completely randomized design with five replications in 2018 in Ahvaz, Iran. Data were collected for leaf length, leaf width, shoot and root length, seedling weight, shoot weight, root weight, branch number, leaf area index (LAI) and water use efficiency (WUE). Result of mean comparisons between three groups (2x, induced 4x and controls 4x), showed that both groups of induced and natural tetraploids had significantly higher mean values for all the traits except leaf length, shoot length and root length than that for diploids. For the latter traits there were no significant differences between 2x and induced 4x. On the overall, the induced 4x had 60%, 62%, 68%, 65%, 22%, 109% and 47% higher mean values than their parental 2x for seedling weight, shoot weight, root weight, LAI, WUE and branch number, respectively. It was concluded that increasing ploidy level provides plant breeders with a promising tool in the breeding improve new varieties suited for future climate scenarios.
PROGETTARE UN LIBRO DI TESTO DIGITALE TRA CRITICITÀ E OPPORTUNITÀ
Authors: Nardi Andrea
Published: July 2021

In Italia la vigente cornice legislativa prevede nelle scuole la transizione al libro di testo elettronico e individua nei docenti i principali soggetti coinvolti nell’autoproduzione e valutazione di questi materiali didattici digitali. Nel presente studio vengono descritti il design, lo sviluppo e la valutazione di un prototipo di libro di testo digitale, multimediale e interattivo, nel tentativo di indagare le principali criticità poste dalla sua realizzazione, i possibili elementi di innovazione rispetto al tradizionale libro di testo, e fornire delle linee-guida ai docenti sempre più responsabili della scrittura e validazione di queste nuove tipologie di testi. Per valutare l’usabilità cognitivo-didattica del prototipo è stato somministrato un questionario a un panel di esperti. Nella prima parte dell’articolo vengono descritti i risultati della rassegna della letteratura svolta al fine di rintracciare buone regole e principi di design; la seconda parte descrive lo sviluppo del prototipo e la procedura di raccolta e analisi dei dati. I risultati ottenuti vengono successivamente discussi ed infine si cerca di trarre qualche conclusione da quanto emerso.

In Italy the current legislative framework foresees the transition to the electronic textbook in schools and identifies teachers as the main subjects involved in the self-production and evaluation of these digital teaching materials. This paper describes the design, development and evaluation of a digital, multimedia and interactive textbook prototype, in an attempt to investigate the main critical issues raised by its implementation and the possible elements of innovation compared to the traditional textbook. In addition, it provides guidelines for teachers who are increasingly responsible for the writing and validation of these new types of texts. To assess the cognitive-didactic usability of the prototype, a questionnaire was given to a panel of experts. The first part of the paper describes the outcomes of the literature review carried out in order to draw effective design principles; the second part illustrates the prototype development and the procedure adopted to collect and analyze data. The results are then discussed and finally some conclusions are drawn.
Efforts to Improve Learning Outcomes Building Flat Side Rooms Through Offline Learning Model
Authors: A Ramuni
Published: July 2021

This study aims to improve student’s learning outcomes on material Flat Sides Solid Figure using worksheet (LKPD) especially for 8th grade class-A student of SMP N 5 Sanggau. The method used was classroom action research. The subjects in this study were 8th grade class-A students. Data collection techniques used observation, measuring, and documentary studying techniques. The instruments used were written test. Based on the result, there is a significant improvement on student’s learning outcomes. It proved by the improvement numbers of student who passed the exam after 2nd Cycle. Which were improved from Pre-Cycle, 1st Cycle, 2nd Cycle are 34%; 73,08%; 92,30% while the averages are 69; 70,96; and 80,08. It proved that applying offline learning models with LKPD in covid-19 pandemic on mathematic will improved students’ learning outcomes. The learning process was morelively because students have a chance to build their own knowledges based on what they learned..
Disharmony of Regional Head Couples (Study of Local Leadership in Central Branch 2005-2019 Period)
Authors: Wahyu Ferary Mirendy
Published: July 2021

This study provides an overview of the disharmony of the regional head pairs starting from the administrative formation of Central Bangka Regency to its third period. This study applies the conflict theory proposed by Ralf Dahrendorf who explains that the conflict of interest of each elite can be categorized as a struggle of position by the group that owns the authority position. The disharmony of the regional head pairs of Central Bangka is included in the authoritative conflict model that causes the occurrence of latent conflict between both of them to compete for position structure. This study used a descriptive qualitative method with the primary data obtained from the interview results with the informants including related officials, board members, civil servants, and the regional head pairs. The results of this study portray that the obtained data provide an overview regarding the conflict potential that results in the limited access for the vice-regents to perform government duties that have been regulated by law. Therefore, public and personal interests can no longer be distinguished since both interests are related to the matter of competition or race for the local election. In other words, the regents have another underlying interest to limit the vice-regents’ access to perform the government duties. Meanwhile, the last period has a different case regarding the authority role of the vice-regent to run the government since the regent concentrates individually more on his duties.
Design of Recognition Robot With Video Transmitter
Authors: Irawati Irawati , Kartikasari Deasy
Published: July 2021

At appliance - comptroller in general still use the special room for watching area of around, and required some fruit of video and one video for every chamber to can watch every occurrence of place of the room. In consequence proposed the application of this for assisting in watcher, because we can implement this video and can watch with long distance. Because this device apply video available for implemented with long distance apply control transmitter as signal consignor and controller receiver as signal receiver, and processing data here apply microprocessor which allotment to be able to crank and programming language here as controller at PC apply two languages Visual Basic for arranging or controller of movement of motor at device video watcher and linguistic assembly as controller at microprocessor in transmitter and receiver. Takenly of this step can facilitate the us in controlling place wanted without having to install the video of each; every room although place there is still cannot be reached with the video attached. With the application of this earn more profit that is minim of amount of videos and can facilitate we see place which have no reached if the videoes just attached by was wall.
Efforts to Improve Teacher Performance: A Theoretical Review
Authors: Anggraeni Novita
Published: July 2021

This article describes about improving teacher performance from the point of view of teacher performance. The writing of this article uses descriptive analytical methods by reviewing the literature on teacher performance theory. Based on this study four conclusions were found: (a) Teachers are one component of education that play an important role in the success of education, teachers are expected to be able to play the role of ideal teachers. (b) Improving teacher performance is one way to improve the quality of education. (c) Teacher performance is the teacher's perception of teacher's work performance related to the quality of work, responsibility, honesty, cooperation and work results. (d) Several factors that influence teacher performance include: (1) the principal's leadership role, (2) personal relationships between peers, (3) teacher-controlled competencies, (4) good training and development of Teacher Resources (HR). Teachers have an important role as a determinant of the success of a quality learning process. Therefore, efforts are needed to improve teacher performance to know their roles and functions so that educational goals can be achieved.
DEVELOPMENT OF AN EVAPORATING TYPE AIR COOLER FOR VENTILATION SYSTEMS
Authors: Barakov A. V. , Dubanin V. Yu. , Prutskikh D. A. , Nadeev A. A.
Published: July 2021

Statement of the problem. The air supplied to the premises during the hot season must be cooled to comfortable temperatures. Due to the fact that additional energy consumption for this cooling is not provided, it is possible to use an evaporative-type air cooler. However, the currently known results of experimental and theoretical studies of such devices do not allow their design, which prevents their spread. The structure of such an apparatus is considered and its theoretical and experimental studies are carried out, the results of which can be used for engineering calculation and design of such apparatus.Results. An evaporative-type air cooler designed by the authors for ventilation systems is described. A theoretical and experimental study of the air cooler has been carried out. Analytical relationships were obtained for determining the time of movement of the material checker in the "wet" chamber of the apparatus, the temperature of the cooled air and the temperature of the checker in any section of the circulation loop. Empirical relationships have been obtained for the efficiency coefficient of the cooler and its hydraulic resistance. Conclusions. The obtained dependencies will serve as the basis for the development of a methodology for the design calculation of indirect-evaporative air coolers with a moving fluidized bed in the field of centrifugal forces.
A IOT (INTERNET OF THINGS) NO CENÁRIO BRASILEIRO: SUAS VANTAGENS E OS PRINCIPAIS DESAFIOS PARA SUA IMPLEMENTAÇÃO E EXPANSÃO
Authors: Reis Portilho Guilherme , Ávila Machado Ferreira Ciro , Martins Albuini Rodolfo , Silva Lucas Victor Hugo
Published: July 2021

A Internet das Coisas (IoT – Internet of Things) consiste na inserção de objetos do cotidiano à Internet, recebendo uma capacidade computacional de comunicação. Dessa forma, eles passam a receber e enviar dados e adquirem novas funcionalidades quando interconectados à rede mundial. Diante de seus inúmeros benefícios, como a criação de um banco de dados dos perfis dos consumidores ou a automação de qualquer processo ou tarefa, tornando-os mais eficientes e seguros, a IoT possui aplicabilidade para diferentes setores tanto econômicos quantos sociais, como o comércio, as indústrias, a saúde, a agricultura e até mesmo no conceito de cidade inteligente. Nesse contexto, os autores desse artigo se propuseram a analisar, compreender e apresentar uma visão dos conceitos de indústria 4.0, de IoT e das principais dificuldades enfrentadas na implementação dessa nova tecnologia, principalmente, no cenário brasileiro.
Análise da qualidade de energia na indústria
Authors: Mendonça Gabriel , Souza Paulo Antônio , De Cássio Eric
Published: July 2021

Através de uma pesquisa e trabalho de campo, buscou-se descrever os fatores que influenciam na condição da energia recebida por uma determinada fábrica, discernir a tensão de boa de má qualidade, demonstrar por gráficos obtidos através de uma análise técnica, os valores a serem examinados para que se chegue à conclusão de que o circuito que foi analisado estava sendo prejudicado ou não pela energia recebida. 

Na linha de produção da indústria onde foi realizada a análise, vinham ocorrendo oscilações na energia recebida da concessionária e isso acabou afetando a produtividade da mesma, pois impactou diretamente no funcionamento de algumas máquinas. Pelo fato de haverem equipamentos importados, os quais seguem as normas do país de origem, mesmo com os níveis de energia registrados estando dentro do padrão da concessionária local e dos valores determinados pela ANEEL, ainda assim, impactavam no funcionamento das máquinas. A partir desta necessidade, uma empresa especialista na área foi contratada para efetuar medições no circuito, fazer uma análise para descobrir a causa e buscar soluções para este problema com a energia recebida.

A energia elétrica se tornou um subsídio básico e fundamental no desenvolvimento da sociedade. Na indústria, além da presença, a qualidade deste elemento passa a ser de extrema importância tanto para eficiência quanto para a vida útil dos componentes e maquinários. Uma energia apropriada é um problema a menos a ser enfrentado por uma fábrica e seus colaboradores em sua rotina.
COVID-19 NO ESTADO DE MINAS GERAIS: ANÁLISE ESTATÍSTICA DO NÚMERO DE ÓBITOS RELACIONADO À POPULAÇÃO ESTIMADA DOS MUNICÍPIOS MINEIROS UTILIZANDO O SOFTWARE MAPLE®
Authors: Werneck Resende Ellen , Dinalva Tavares Luany , Bittencourt Nazaré Tiago , Machado Rodrigues Loaisy
Published: July 2021

O COVID-19 trata-se de uma doença infecciosa causada pelo coronavírus. Esse resultou em uma pandemia que se espalhou por cidades do mundo inteiro, infectando suas populações e, em muitos casos, levando a óbito. Nesta perspectiva, o objetivo do presente trabalho foi realizar um estudo analisando o cenário da COVID-19 no estado de Minas Gerais antes de iniciar a vacinação, através de dados extraídos diretamente da Secretaria de Estado de Saúde de Minas Gerais e do Instituto Brasileiro de Geografia e Estatística (IBGE). Além disso, para desenvolver o trabalho fez-se necessário utilizar as ferramentas Microsoft Excel 2016 e Maple 17 com o intuito de organizar os dados, realizar cálculos e análises estatísticas da amostra, como, por exemplo: média, desvio padrão, variância e curtose. Através dos cálculos citados foi possível gerar gráfico e visualizar o cenário das cidades mineiras frente à pandemia. Ao final da análise dos resultados, observou-se que a cidade que obteve o pior cenário frente à pandemia foi Aracitaba, com 2.059 habitantes e 7 óbitos. Já a cidade que obteve o melhor cenário foi Berilo, com 11.872 habitantes e apenas 0 óbitos. Mas, é importante ressaltar que através dos cálculos estatísticos evidenciou-se que as cidades mineiras tiveram comportamentos bem semelhantes, pois não houve muita variação nos resultados obtidos.
LOGÍSTICA REVERSA PARA O DESCARTE DE LÂMPADAS
Authors: Silva Rodrigues Rodrigo César , Durães Pinheiro Ana Beatriz , Carolina Souza Ingrid , Da Silva Augusto Rafael , Bittencourt Nazaré Tiago
Published: July 2021

O consumo de energia elétrica está cada vez mais alto e as pessoas não vivem mais sem ela, porém o problema está no descarte dos produtos, os quais liberam substâncias altamente prejudiciais ao meio ambiente, colocando em risco os ecossistemas e a saúde humana. É fundamental encontrar um método com objetivos e propostas que possam ser desempenhados por todos com o intuito de efetivar a preservação do meio ambiente. A Logística Reversa se trata de um conjunto de ações com o objetivo de viabilizar a coleta e a restituição de resíduos sólidos ao setor empresarial para reaproveitar em seu ciclo ou outra destinação final adequada. Ela acompanha o produto desde a sua venda até o retorno ao seu ponto de origem (os fabricantes), que serão responsáveis pela destinação ambientalmente adequada. Ela contribui também com o lucro da empresa e impõe a responsabilidade pós-consumo aos consumidores. O presente estudo descreve a construção de um método no qual se refere a captação e análise de percepções baseadas em dados estatísticos dos entrevistados por meio de uma amostra aleatória simples. O estudo também traz uma visão de vários autores a respeito do tema abordado, além de obter declarações de empresas e utilização de decretos.
ESTUDO DE CASO DA APLICAÇÃO DE CONJUNTO SECCIONADOR DE BAIXA TENSÃO PARA SECCIONAMENTO DE ÁREAS ALAGADAS (ENCHENTES)
Authors: Pereira Milani Álvaro , Flores Farinazzo Bruno , De Sousa Cardoso Mateus , Batista de Oliveira Fabio , Henrique Silva Lopes Paulo
Published: July 2021

Este artigo tem por objetivo analisar e propor uma solução prática e aplicável para o sistema elétrico que sofre com desligamentos decorrentes de chuvas e alagamentos em Cataguases/MG. Foi utilizado materiais do acervo eletrônico e dados técnicos de uma Concessionária do interior de Minas Gerais e aplicou-se um seccionador de baixa tensão em locais com histórico de alagamentos. Esta solução permitiu reduzir a abrangência das ocorrências técnicas, garantindo assim maior qualidade de vida para a população que ali vivem
TECNOLOGIA DE TRANSMISSÃO DE ENERGIA SEM FIO (WIRELESS POWER TRANSFER)
Authors: Riguete de Castro Wendel , da Silva Fialho Edvaldo , Vinicius Cavalhiere Marcos , Rodrigues Coelho Junior Ivamar , Silva Lopes Paulo Henrique
Published: July 2021

Esse artigo tem como tema a tecnologia de transmissão de energia sem fio (Wireless Power Transfer – WPT). Assim como a comunicação verbal que se desenvolveu com a implementação do rádio, celulares e depois com a internet, temos hoje a WPT, que consiste em transmitir cargas elétricas sem condutores.  O artigo busca esclarecer dúvidas sobre o tema explicando: O que é? Como funciona? Quais os ganhos e as perdas em relação a energia transmitida através de condutores? Para isso, os autores utilizaram os conhecimentos de eletromagnetismo e circuitos elétricos estudados ao decorrer da graduação, além da pesquisa em artigos, monografias e teses sobre o tema. Sabe-se que a energia wireless já está sendo implementada em algumas funções do dia a dia como em carregadores de celular e para carros elétricos. Logo, vale ressaltar a importância do tema como inovação tecnológica, que pode ser aplicada tanto para facilitar as tarefas do dia a dia, como também para otimizar os processos dentro das indústrias. Desta forma, os autores abordaram o tema de forma geral, não se restringindo a teoria e apresentando as principais aplicabilidades e as vantagens e desvantagens dessa tecnologia.
Estudo de caso de viabilidade e migração para o Mercado Livre de Energia
Authors: Mendonça Gabriel , De Sousa Paulo Antônio , Silva Lopes Paulo Henrique
Published: July 2021

É notório que a energia elétrica é essencial para o funcionamento de qualquer ramo da indústria e, consequentemente, muito utilizada pelos grandes consumidores. A questão é que, por causa da larga escala de uso desse insumo, boa parte do orçamento das empresas acaba comprometida, o que leva à busca pela redução de despesas. Em razão disso, o presente trabalho apresenta um estudo de caso sobre a viabilidade econômico-financeira de migração de uma empresa para o Ambiente de Contratação Livre de Energia (ACL), conhecido também como Mercado Livre de Energia - que propõe diminuir as despesas nas faturas de energia, gerando um menor custo médio de energia por produção. É demonstrado todas as etapas do estudo de possibilidade de migração ao ACL, tais como simulação das faturas de energia após a contratação do Mercado Livre, comparação do custo médio de energia por produção no mercado cativo e no mercado livre, dentre outras análises. Ao final do estudo, é comprovado que as possibilidades de melhorias apresentadas para migração são passíveis de serem implantadas e comprovaram oferecer retorno positivo sobre o investimento.
EDUCAÇÃO E SERVIÇOS AMBIENTAIS: A IMPORTÂNCIA DAS ABELHAS NA CONSERVAÇÃO E PRESERVAÇÃO DA BIODIVERSIDADE
Authors: Machado Ordunha Júlia , Maria de Faria Mucci Georgina
Published: July 2021

As abelhas desempenham um importante papel na preservação da biodiversidade, um dos serviços ambientais mais importantes prestado por elas é a polinização. As abelhas, com raras exceções, são totalmente dependentes dos recursos florais para a sua alimentação e as angiospermas dependentes dessas para a reprodução, visto que são os principais vetores de pólen em ecossistemas tropicais e temperados. Contudo, as abelhas estão desaparecendo por diversas causas como desmatamento e a utilização de agrotóxicos e pesticidas. O objetivo do projeto foi mostrar, aos diferentes segmentos da sociedade de Carangola, os principais serviços ambientais realizados pelas abelhas (com foco na polinização) e a importância desses na preservação da biodiversidade. O estudo foi realizado em quatro escolas da rede pública de ensino de Carangola e na Câmara Municipal. Inicialmente, realizou-se uma palestra e uma oficina, em que se discutiu sobre: os serviços ambientais; diversidade de abelhas no Brasil e no mundo; como ocorre o processo de polinização e seu papel na preservação da biodiversidade. Foi mostrada aos alunos uma caixa entomológica, contendo espécies de abelhas da fauna brasileira. Ao final, foi pedido aos discentes que elaborassem uma frase de impacto, desenho ou texto sobre a importância das abelhas. Eles perceberam que muitos só conheciam a “abelha africanizada”, como eles chamam a Apis mellifera. Além disso, puderam se informar sobre as causas do desaparecimento das abelhas, sobre as formas de preservação e sobre a importância delas na conservação e preservação da biodiversidade.
A aliança entre Tecnologias do passado e Tecnologias Digitais da Informação e Comunicação via Investigação Científica
Authors: Oliveira Gisele Pereira , Costa Pereira Ana Carolina
Published: July 2021

O século XXI tem sido reconhecido pelo uso frequente de Tecnologias Digitais da Informação e Comunicação (TDIC), pela divulgação de informação e comunicação em rápida velocidade, cenário que nos inquieta a perceber que os recursos tecnológicos já estavam presentes em séculos passados, com funcionalidades, interfaces, contextos históricos e necessidades distintas em cada período. Diante dessa compreensão, desenvolvemos esse estudo com o objetivo geral de compreender a aliança entre as tecnologias do passado e as tecnologias digitais via investigação científica como meio favorável ao ensino e aprendizagem da Matemática. Buscando-se alcançar tal objetivo, o percurso metodológico desta foi pautado conforme a Engenharia Didática de segunda geração, organizada em quatro fases: as análises preliminares, concepção e análise a priori das situações didáticas, experimentação e análise a posteriori validação. Resultou-se mediante ao uso da plataforma Storyboard That, a produção de uma história em quadrinhos, que tratou introdutoriamente sobre fatos presentes na história da Matemática, fazendo a utilização do instrumento náutico/matemático, balhestilha, de Manoel de Figueiredo, de 1603, contido no documento histórico, Chronographia Reportório dos Tempos[...], em que através dos quadrinhos estabeleceu a aliança entre as tecnologias do passado e as digitais, obtendo um recurso atrativo e lúdico, que pode ser relevante ao ensino de saberes matemáticos. Dessa maneira, concluímos que a articulação entre tecnologias de períodos distintos no ensino de Matemática é possível, mas mediante a realização de um tratamento didático, que destaque a intencionalidade da ação, assim como a construção de um plano de ação que contenha uma metodologia norteadora e recursos educacionais digitais.
Síndrome de sobreposición entre hepatitis autoinmune y cirrosis biliar primaria: reporte de caso
Authors: Barrientos-Saavedra Carolina del Pilar , Barturén-Mondragón Luciana Elcira
Published: July 2021

El síndrome de sobreposición se refiere a la coexistencia de dos patologías autoinmunes que comparten características clínicas, histológicas, serológicas y bioquímicas. En adultos se observa con mayor frecuencia la asociación de hepatitis autoinmune (HAI) y colangitis biliar primaria (CBP). Se presenta el caso de un varón de 54 años de edad, con un año de enfermedad, pérdida ponderal, ictericia y prurito. Su perfil hepático estuvo alterado, colestasis, anticuerpos antinucleares (ANA) positivo, anticuerpos antimitocondriales (AMA) negativo, serología viral negativa. La biopsia renal presentó hallazgos relacionados al síndrome de sobreposición HAI-CBP. Se concluye que el diagnóstico y tratamiento del síndrome de solapamiento de CBP-HAI es dificultoso y debe considerarse en el diagnóstico diferencial de las hepatopatías autoinmunes. Se recomienda la intervención multidisciplinaria para establecer el diagnóstico correcto y ofrecer estrategias terapéuticas favorables.
Road Accidents Analysis Using Comparative Study & Application of Machine Learning Algorithms
Authors: Saini Arnav , Gauba Nipun , Chawla Hardik , Ali Jabir
Published: July 2021

Model predictive contrTraffic Collisions are one of the major sources of deaths, injuries & property damage every year. Road accidents are one of the most difficult real world problems to tackle with, due to its high order of unpredictability. The persistence as well as existence of this problem may be prevalent to a different degree for each & every place. The consequences of this may result in loss of human life & capital. To avoid this, every place needs to tackle the problem with a customized approach depending on the causes that are responsible for the accidents. Even in today's world, where the mass operation of autonomous vehicles is still grim or out of sight, the possibility of predicting a road accident before it takes place, is practically impossible. The only idea or approach that can help to decrease the number of road accidents, is to analyze the reasons that lead to these accidents. The concepts of Data Analysis, Data Visualization & Machine Learning help to tackle real world problems, by exploring & deriving valuable insights, which in turn help in taking measures to solve the targeted problem & drive business growth. In this research study, the dataset pertaining to road mishaps that occurred in UK over time period 2005 - 2015 will be analyzed using these concepts. The defined approach can help the concerned authorities & respective government, to take every possible step & amendment, & hence mitigate the identified causes & scenarios that lead to road accidents.
Finite Sample Properties for Closed Loop System Identification
Authors: Jianhong Wang , Peng Chen , Ramirez-Mendoza Ricardo A.
Published: July 2021

In this paper, after closed loop system identification is reviewed, asymptotic analysis and finite sample analysis for closed loop system identification are studied respectively, corresponding to the infinite data and finite data. More specifically, within the framework of infinite data, the cost function is modified to its simplified form, and one optimal feedback controller is obtained based on our own derivations. The simplified cost function and optimal feedback controller are benefit for practical application. Furthermore, the asymptotic variance of that optimal feedback controller is also yielded from the point of asymptotic analysis. In the case of finite data, finite sample properties are constructed for closed loop system identification, then one difference between the sampled identification criterion and its corresponding expected criterion is derived as an explicit form, which can bound one guaranteed interval for the sampled identification criterion. Finally, one simulation example is used to prove the efficiency of our proposed theories.
Correlations of Anthropometric Measurement and Handgrip Strength between Collegiate Cricket Fast and Spin Bowlers
Authors: Akshay Ramesh Shanbhag  , Neeraj Kumar
Published: July 2021

Background: More dimensions in anthropometric variables and dominance of the hand aid in bowler’ssuccess and is easier for coaches/teams to pick and hire on the basis of fast and spin bowlers. Little isknown to date on the relationship between anthropometric measures and handgrip power in collegiatebowlers. Present study is an attempt to quantify the handgrip power of collegiate male cricketers, andto explore its correlations with some selected anthropometric variables.Methods: Forty fast and 37 spin bowlers, aged between 20-25 years (mean age= 22.7±1.2 years) wereselected from match practice group of different colleges in Rahata taluka, Maharashtra. Body heightand mass were measured to calculate body mass index. Handgrip strength was measured with standarddynamometer. Statistical analysis was carried out for each variable and independent t-test was used toanalyze differences between the two groups. Pearson’s correlation coefficient test was done to obtainrelationship between handgrip strength and selected anthropomorphic variables. The significance wasset at 0.05.Conclusion: Anthropometric variables were directly related to handgrip strength among bowlers inthis study. Forearm lengths of spinners were longer than fast bowlers. Handgrip strength was more indominant hand and spinners had more handgrip strength than fast bowlers. These parameters will helpin future for talent identification in handgrip-related sports and/or clinical settings.
Effect of Music Therapy and Frenkel Exercise on Reaction Time in Geriatric Population-A Comparative Study
Authors: Donal Chundakal  , Parag Kulkarni  , Shwetambari Chavan  , Ronald Prabhakar
Published: July 2021

Background: Co-ordination is a key factor for smooth movements in human body. To study coordinationof an individual measuring reaction time is an important tool.Prolonged reaction time in addition with difficulty in recognition of stimuli affects co-ordinationspecially in geriatric population. Frenkel’s exercises improves reaction time, thus improves coordination.Listening to music is enjoyed by all and has shown to be useful in cognitive functions.Studies have shown that listening to music enhances co-ordination and improves reaction time.Objective: To compare effects of Frenkel exercise with classical music and effects of Frenkel exerciseswith heavy metal music on simple and choice reaction time (SRT and CRT) in geriatric population.Methods: 60 geriatric individuals with age group 65-70 years were examined for simple and choicereaction time. Individuals were divided into 2 groups equally. Group A received classical music withFrenkel exercises and group B heavy metal music with Frenkel exercise. Participants were givenFrenkel exercise 2 weeks daily for 30 minutes and post reaction readings were taken for reaction time.Results: After analysing the results by Mann Whitney U test,Mean pre SRT group A was 499.29, mean pre SRT group B was 540.80. Mean post SRT group A was379.76, mean post SRT group B was 586.56 (p<0.001)Mean pre-CRT group A was 970.70, mean pre-CRT group B was 1107.6 (p<0.001). Mean post CRTgroup A was 894.30, mean post CRT group B was 1151.7 (p<0.001)Conclusion: There is significant difference in simple and choice reaction time after receiving classicalmusic and heavy metal music with Frenkel exerciseTraining for co-ordination can yield significant improvement on receiving classical music as an adjuvantto Frenkel exercise.
Association between Balance Confidence and Cognitive-Motor Interference in Stroke Patients – Pilot Study
Authors: Padmanabhan Suresh Babu Roshan  , Rajesh Rai  , S Sethulekshmi
Published: July 2021

Background: Functional community ambulation demands the ability to accomplish both mobility andcognitive tasks at the same time (dual-tasking). When gait and cognitive deficits are done concurrently,this is referred to as cognitive-motor interference. Some hypothesis says that Individuals with lowbalance confidence would have higher cognitive-motor interference, indicating a behavioral changeduring dual-task settings. The purpose of this study is to see if cognitive-motor interference is linked tostroke patients’ confidence in their balance.Methodology: The participants in this pilot trial were sub-acute and chronic community-dwelling strokesurvivors. The MFES questionnaire assessed balance confidence. Participants completed four 10-meterwalking trails to evaluate Cognitive-Motor Interference. Two of the walking trails were performedwithout any additional tasks, while the other two were completed with a concurrent cognitive challenge.Conclusion: A total of 30 people participated in this study, with a mean age of 64±7.7 years. Pearsoncorrelation discovered a statistically significant (p=<0.05) negative correlation (r=-0.202) betweenbalance confidence and CMI. This study found that balance confidence is not associated with cognitivemotor interference in stroke patients
Estimating group differences in network models using moderation analysis
Authors: Haslbeck Jonas M. B.
Published: July 2021

Statistical network models such as the Gaussian Graphical Model and the Ising model have become popular tools to analyze multivariate psychological datasets. In many applications, the goal is to compare such network models across groups. In this paper, I introduce a method to estimate group differences in network models that is based on moderation analysis. This method is attractive because it allows one to make comparisons across more than two groups for all parameters within a single model and because it is implemented for all commonly used cross-sectional network models. Next to introducing the method, I evaluate the performance of the proposed method and existing approaches in a simulation study. Finally, I provide a fully reproducible tutorial on how to use the proposed method to compare a network model across three groups using the R-packagemgm.
Direct C(sp3)-H allylation of 2-alkylpyridines with Morita-Baylis-Hillman carbonates via a tandem nucleophilic substitution/aza-Cope rearrangement
Authors: Wang Siyu , Zheng Lianyou , Wang Shutao , Ning Shulin , Zhang Zhuoqi , Xiang Jinbao
Published: July 2021

A base- and catalyst-free C(sp3) – H allylic alkylation of 2-alkylpyridines with Morita-Baylis-Hillman (MBH) carbonates was described. A plausible mechanism of the reaction might involve a tandem SN2’ type nucleophilic substitution followed by an aza-Cope rearrangement. Various alkyl substituents on 2-alkylpyridines were tolerated in the reaction to give the allylation products in 26-91% yields. The developed method provides a straightforward and operational simple strategy for the allylic functionalization of 2-alkypyridine derivatives.
Monográfico. Arte, tecnología y colonialidad
Authors: Alfonso Bouhaben Miguel , Valesini Silvina , Villegas Daniel
Published: July 2021

El presente Monográfico Arte, Tecnología y Colonialidad tiene el propósito de discutir y reflexionar, desde una perspectiva crítica y transdisciplinar, sobre la intersección que se establecen entre las prácticas artísticas, las nuevas tecnologías y los procesos actuales, post y decoloniales. Para ello, convocamos a investigadores nacionales e internacionales para que envíen sus aportaciones investigativas en torno a las posibilidades de la investigación artística en la tecnosfera desde la óptica de la colonialidad del saber/ver y la decolonización estética.
Monográfico. Abordajes críticos del cine latinoamericano contemporáneo
Authors: Veliz Mariano
Published: July 2021

Los artículos que componen este monográfico giran en torno a una serie de preguntas: ¿cómo abordar la contemporaneidad del cine de nuestra región?, ¿cuáles son las herramientas críticas y las perspectivas teóricas que permiten articular apropiaciones significativas de este cine?, ¿dónde se posiciona, en el cine latinoamericano reciente, aquello que se concibe como contemporáneo? La apertura de estos interrogantes, más que su respuesta conclusiva, funciona como generador de las intervenciones aquí reunidas. En todos los casos, subrayando la relevancia de asumir el carácter situado de la crítica y postulando el carácter latinoamericano no sólo de las producciones audiovisuales que se analizan, sino del espacio enunciativo en el que ese trabajo exploratorio tiene lugar.
Familial Conversion: A Case Study on the Ethical-Religious Role of the Household in the Mass Conversion of Wenzhou Christians
Authors: ZHANG Jieke
Published: July 2021

This article explores the familial conversion which has cumulative impact on the mass conversion of Wenzhou Christians after 194 9. Acknowledging the dramatic revival of Christianity in Wenzhou following reform and opening in China by no means precludes recognizing the hidden upsurge of conversion events before 1978. Through a ease study on the congregation of Qingpu Church in Heyang area of Wenzhou > I hope to demonstrate that the familial aspect of conversion in the form of household units> rather than individual conversions> is the key to understanding the conversion of Wenzhou Christians. The article argues that the oneness of family derived from the emotional and responsible relationships within it, along with the process of the conversion ritual, constitute the ethical-religious role of the household > which contributes to the emergence of familial conversion. This preliminary study attempts to draw more attention to family,an essential ethical and even existential cultural factor in Chinese society. It is through the family that we may come to better understand the indigenous development of Christianity in China.
Christianity and the Change of Marriage Style of Lisu People in the Northern Part of the Border between China and Myanmar: Taking K Village of Nujiang as an example
Authors: SHA Lina , CAO Han
Published: July 2021

"The changes in the marriage modes of Lisu people on the northern border between China and Myanmar from marriage by capture>elopement > intcrchurch marriage to internal and external marriage is a result of the “rational“ choice of Christianity throughout history. It is a two-way fusion process between Christianity and traditional culture of Lisu people > which reflects the development track of Lisu society. "leaking the introduction and development of Christianity as an entry point, this paper examines the marriage change of Lisu people in K village of Nujiang, with the aim to provide a research perspective for further understanding the localization of cross-border ethnic Christianity.
Becoming a martyr in China: The Steyl Missionary Father Paul Buhl (1902-1944)
Authors: Moll Helmut
Published: July 2021

To counteract oblivion. Pope John Paul II. ( 1920—2005 ) initiated a comprehensive reappraisal of the Christian victims of violence in the 20th century. The German Bishops' Conference took up this idea and asked the author of this article to compile the German Martyrology, together with 170 experts. The two-volume magnum opus “Witnesses for Christ. The German Martyrology of the 20th Century“ is available since 2019 in its seventh revised and updated edition.
PENGARUH PEMAKAIAN HYDROCARBON CRACK SYSTEM (HCS) TERHADAP PERFORMA SEPEDA MOTOR SUPRA X 125 TAHUN 2009
Authors: Jusnita
Published: July 2021

Kendaraan bermotor di Indonesia yang menjadi sumber emisi gas buang terbesar adalah sepeda motor. Ini merupakan kurangnya perhatian pengguna kendaraan bermotor dengan perbandingan kompresi mesin kendaraan yang tinggi cenderung memilih mengisi bahan bakar sepeda motornya dengan premium yang harganya lebih murah namun memiliki angka oktan yang rendah. Hal ini tentu akan menimbulkan masalah terhadap pembakaran yang tidak sempurna. Efek yang ditimbulkan adalah menyebabkan meningkatnya polutan pencemaran udara. Untuk mengatasi permasalahan diatas adalah dengan cara menggunakan Hydrocarbon Crack System (HCS), HCS bekerja untuk menyempurnakan proses pembakaran, sehingga dapat menurunkan kadar emisi gas buang kendaraan. Tujuan dari penelitian ini melihat pengaruh penggunaan Hydrocarbon Crack System (HCS) terhadap performa dan kandungan emisi gas buang yang dihasilkan. Berdasarkan hasil penelitian diperoleh bahwa penggunaan HCS pada sepeda motor Honda Supra X 125 dapat menurunkan emisi gas CO sebesar 40 %. Untuk emisi gas HC penggunaan HCS dapat menurunkan emisi gas HC sebesar 37%,sedangkan untuk emisi gas buang CO2 penggunaan HCS dapat meningkatkan emisi gas CO2 sebesar 12.98%.

 

Motor vehicles in Indonesia which are the largest source of exhaust emissions are motorbikes. This is the lack of attention of motorized vehicle users with high engine compression ratios, which tend to choose to refuel their motorbikes with premium which is cheaper but has a low octane number. This of course will cause problems with incomplete combustion. The resulting effect is to increase air pollutants. To overcome the above problems is by using the Hydrocarbon Crack System (HCS), HCS works to improve the combustion process, so that it can reduce the levels of vehicle exhaust emissions. The purpose of this study is to see the effect of the use of the Hydrocarbon Crack System (HCS) on the performance and content of the resulting exhaust emissions. Based on the research results, it was found that the use of HCS on a Honda Supra X 125 motorcycle could reduce CO gas emissions by 40%. For HC gas emissions, the use of HCS can reduce HC gas emissions by 37%, while for CO2 exhaust emissions, the use of HCS can increase CO2 emissions by 12.98%.