bluuebunny/crossref_metadata_2025 huggingface dataset:
Proyecto de Capacitación virtual en TIC para los docentes del gad Pedro Moncayo – Ecuador
Authors: Aguas Bucheli Luis Fernando , Coral Rosario , Morales Flavio , González Emanuel
Published: September 2022

Con la llegada del COVID-19 las actividades presenciales quedaron suspendidas por el alto riesgo de contagio al que las personas se expusieron. Ante lo declarado, la alternativa fue brindar un plan de capacitación virtual enfocado en las Tecnologías de la Información y la Comunicación para la educación, mediante herramientas tecnológicas que permitieran instruir a los docentes de las instituciones educativas de nivel medio del Gobierno Autónomo Descentralizado Cantonal Pedro Moncayo. El presente documento contiene la propuesta metodológica para la estructura de las aulas virtuales y el análisis realizado entre las diferentes variables: edad, género, discapacidad, número de estudiantes, contenidos del curso, materiales, explicaciones del instructor, dominio del tema y ejercicios de aplicación para la investigación. En este proyecto de vinculación con la sociedad, los estudiantes del 8.o nivel de Sistemas de Información de la Universidad Tecnológica Israel - UISRAEL capacitaron a 300 docentes, brindando un aporte significativo mediante clases en línea, que motivaron a una mejora continua en los procesos de enseñanza que llevan a cabo estos docentes.
Spatial patterns of crops in Russia
Authors: Savin Igor Y. , Avetyan Sergey A. , Shishkonakova Ekaterina A. , Zhogolev Arseny V.
Published: September 2022

Information about spatial distribution of agricultural crops in Russia exists only in the form of statistical data aggregated at the level of regions or farms, which does not make it possible to obtain data about the actual distribution of crops. Attempts to use satellite data for mapping of individual crops have not yet been successful either. We have attempted to disaggregate statistical data on crop areas using map of ploughed soils in Russia, information on crop rotations, and assessment of suitability of land for cultivation of specific crops. An analysis was conducted for the 28 most common crops in Russia. Maps of the distribution of these crops in the country were constructed. The maps give an idea of the geography of crops in Russia and can be used to improve approaches to satellite mapping and monitoring of crop areas in the country.
Influence of water erosion on the structure and content of labile humic substances in the structural-aggregate fractions of leached chernozems of the Central Chernozem region
Authors: Vasenev Ivan I. , Gorbunova Nadezhda S. , Gromovik Arkady I. , Devyatova Tatyana A.
Published: September 2022

The structural-aggregate composition of leached chernozems (Voronic Chernozems Pachic according to WRB-2014), the distribution of organic compounds Corg and labile humic substances (LHS) in the structural-aggregate fractions of carbon in the conditions of a slope type of terrain during the development of erosion were studied. The work was carried out in the northern part of the Voronezh region on the catena, which included a section of the watershed, smoothly turning into a southwestern slope about 1500 m long and 5˚ steep. The soils of the following sections of the catena were studied: 1) the watershed part; 2) the upper part of the slope; 3) the middle part of the slope. It was shown that degradation of the structural-aggregate state occurs in eroded chernozems, accompanied by a deterioration in microstructurality, a decrease in the number of mesoaggregates and a structural coefficient, as well as a loss of a water-resistant structure. According to the results, LHS play a very important role in maintaining the water-stable structure of chernozems. The most significant contribution to the content of Corg contribute mesoaggregates 5-1 mm in size, which are actively lost during the development of erosion.
Dynamics of cerebrospinal fluid in correction of degenerative lumbosacral stenozis during the postoperative period in dogs
Authors: Vilkowysky Ilya F.
Published: September 2022

Dynamics of cerebrospinal fl parameters in postoperative period during correction of degenerative lumbosacral stenosis in dogs is an important diagnostic aspect that allows monitoring changes in the state of animals after surgery. An accurate analysis of cerebrospinal fl id provides a wide range of information about the patients neurological health. The assessment should consist of macroscopic, quantitative and microscopic analyses. Сell count is the most important and potentially sensitive indicator of disease. The aim of this study was to determine changes in the cerebrospinal fluid during the postoperative period in the correction of degenerative lumbosacral stenosis. In the study, there were 9 dogs of various breeds, aged from 2 to 8 years (experimental group), the indicators of cerebrospinal fluid and peripheral blood of 3 healthy outbred dogs obtained as a result of medical examination at the age of up to 5 years were used as a control. Surgical intervention was carried out according to the B.P. Meij, N. Bergknut, which consists in dorsal access to the L7-S 1 vertebral arches, soft tissue dissection, dissection of the dorsal ligament, formation of channels in the cranial articular processes of S 1, L7. From each animal, three liquorograms were taken for examination three times on days 1-3 after surgery, on days 12-15 and 27-30 after surgery. The study of cerebrospinal fluid was performed within 30 minutes after taking. As a result of the data obtained, it was found that the cellular composition of the liquor of dogs in the postoperative period of correction of lumbosacral stenosis was within the physiological norm, erythrocytes in the cerebrospinal fluid were not detected. The number of nucleated cells in operated dogs was the highest on days 1-3 after surgery. On the 12th-15th day after the operation, cytosis in the experimental and control groups of animals was 1.27 cells/l more. On days 27-30 after surgery, cytosis in dogs in the experimental group was lower by 0.45 cells/l compared to the control. Analysis of cerebrospinal fluid can help in the diagnostic assessment of the condition of animals in the postoperative period. However, it should be borne in mind that results are rarely specific to any particular condition and should be interpreted in the light of clinical and additional diagnostic findings.
Congruencia y respuesta a factores ambientales de diferentes métricas de biodiversidad en el golfo de Batabanó, Cuba
Authors: Capetillo-Piñar Norberto , Lopeztegui-Castillo Alexander , Betanzos-Vega Abel , Tripp-Quezada Arturo , Zetina-Rejón Manuel Jesús , Hernández-Padilla Juan Carlos
Published: September 2022

Diferentes métricas de biodiversidad se deben explorar para evaluar de manera más eficiente los cambios observados en las comunidades. Sin embargo, el desempeño de distintas métricas de biodiversidad no ha sido explorado en el golfo de Batabanó, lo que puede dificultar la selección de índices adecuados para el monitoreo ambiental. Para solventar esta problemática seis métricas de biodiversidad (riqueza de especies, equidad de Pielou, diversidad de Shannon, diversidad taxonómica, distintividad taxonómica promedio y variación en la distintividad taxonómica) fueron comparadas para determinar su congruencia y respuestas ante variables abióticas (salinidad, temperatura, turbidez, profundidad) y factores (zonas y años). Los resultados obtenidos por correlaciones entre las métricas y sus respuestas a las variables abióticas y factores analizados mostraron complementariedad entre la riqueza de especies, equidad de Pielou, diversidad de Shannon, distintividad taxonómica promedio y variación en la distintividad taxonómica, no siendo así para la diversidad taxonómica. Según los resultados de este trabajo, se sugiere el uso de la riqueza de especies y las métricas de distintividad taxonómica ∆+ y Λ+ para evaluar la calidad ambiental del golfo de Batabanó. Además se deben evaluar sus desempeños en otros grupos de organismos.
Tasa de depredación de Panulirus argus (Decapoda: Palinuridae) sobre moluscos gastrópodos en dos zonas pesqueras al sur de Cuba
Authors: Martínez-Coello Diana , Lopeztegui-Castillo Alexander , Amador-Marrero Ulises
Published: September 2022

La langosta espinosa Panulirus argus es un mesodepredador que tiene un impacto en  las poblaciones de moluscos bentónicos que constituyen su alimento. En el presente estudio, se determinó la composición de la dieta de P. argus y la presión de depredación que ejerce sobre los gastrópodos de las regiones pesqueras Santa Cruz del Sur (SCrso) y golfo de Batabanó (GB), Cuba. Mediante arrastres se cuantificó la densidad y diversidad de gastrópodos, que, basado en la abundancia de langostas, sirvió para estimar el impacto de la depredación. Se capturaron 250 langostas: 62 en SCrso octubre 2012, 136 en el GB febrero 2014 y 52 en el GB julio 2018. La vacuidad fue similar en SCrso (38,7%) y en el GB (38,0%). Se registraron 13 categorías tróficas, las más frecuentes: opérculos (48,8%) y restos de crustáceos (48,0%), de conchas (47,2%) y vegetales (35,0%), demostrando que la dieta se compone principalmente de moluscos y crustáceos. La frecuencia de ocurrencia de vegetales sugiere consumo no accidental. Se identificaron 17 especies de moluscos, siendo Tegula fasciata, Phrontis antillarum, Aliger gigas, Turbo castanea y Chione cancellata las más frecuentes. La mayor tasa de depredación fue sobre las especies T. fasciata (3,36), P. antillarum (0,54) y A. gigas (0,45). La presión de depredación fue 0,92 gastrópodos langosta-1 en SCrso y 3,31 gastrópodos langosta-1 en el GB, lo que según las respectivas densidades de langostas (3.546 langostas km-2 y 3.837 langostas km-2) y gastrópodos (3,76 ind. m-2 y 1,45 ind. m-2), demostró que P. argus consume 0,087% de los gastrópodos en SCrso y 0,887% en el GB. Se encontraron además evidencias de canibalismo.
Length-weight relationship of four batoid species from the Pacific coast of Ecuador
Authors: Pincay-Espinoza Jonathan , Diz Fernando Rey , José Vélez José
Published: September 2022

Length-weight relationships (LWR) were estimated for four species of batoids, Zapteryx xyster, Rostroraja equatorialis, Pseudobatos leucorhynchus and Gymnura crebripunctata, collected in Ecuadorian waters. Values of the allometric growth parameter (b) oscillated from 2.41 to 3.15. Pseudobatos leucorhynchus and G. crebripunctata exhibited isometric type growth, while Z. xyster and R. equatorialis showed negative and positive allometric growth, respectively. New records of minimum sizes were obtained for free-swimming R. equatorialis (7.8 cm TL) and G. crebripunctata (20.0 cm DW). Data obtained constitute a baseline for future management and conservation studies.
Far from Heart, Far from Eyes: Empathy, Personal Identity, and Moral Recognition
Authors: Cabezas Hernández María del Mar
Published: September 2022

Do we empathize with the others because first we have recognized them as somehow equals, or do we recognize them as equals because first we have empathized with them? This article explores the relation between affective empathy, the moral recognition of the others, and personal identity. I defend that, to recognize others as valuable and act in line with this, one must be able to feel affective empathy for their situation, and, to do so, one has to 1) be curious about them to surpass indifference, and 2) feel that your identity is not threatened by recognizing the others. Otherwise, rationalizations and justifications of antisocial behaviors would arise. Thus, I focus on how the construction of the self plays a key role in prosocial behaviors and the activation of affective empathy, which has been overlooked by moral philosophy in the debate on empathy.  In order to do so, firstly, I explore cases where moral recognition is broken, secondly, I explore the dichotomic debate on the role of empathy for moral recognition and moral agency, and, thirdly, I try to enrich the debate by shifting the focus to the prerequisites to feel empathy, such as curiosity, a well-integrated self and healthy narcissism, addressing so how the construction of the self plays a key role in the possibility of empathizing with others and, therefore, in epistemic virtues and moral agency. As a result, I advocate the importance of psychological education for moral agency.
Dynamic Ins2 Gene Activity Defines β-Cell Maturity States
Authors: Chu Chieh Min Jamie , Modi Honey , Ellis Cara , Krentz Nicole A.J. , Skovsø Søs , Zhao Yiwei Bernie , Cen Haoning , Noursadeghi Nilou , Panzhinskiy Evgeniy , Hu Xiaoke , Dionne Derek A. , Xia Yi Han , Xuan Shouhong , Huising Mark O. , Kieffer Timothy J. , Lynn Francis C. , Johnson James D.
Published: September 2022

Transcriptional and functional cellular specialization has been described for insulin-secreting β-cells of the endocrine pancreas. However, it is not clear whether β-cell heterogeneity is stable or reflects dynamic cellular states. We investigated the temporal kinetics of endogenous insulin gene activity using live cell imaging, with complementary experiments using FACS and single-cell RNA sequencing, in β-cells from Ins2GFP knockin mice. In vivo staining and FACS analysis of islets from Ins2GFP mice confirmed that at a given moment, ∼25% of β-cells exhibited significantly higher activity at the evolutionarily conserved insulin gene, Ins2. Live cell imaging over days captured Ins2 gene activity dynamics in single β-cells. Autocorrelation analysis revealed a subset of oscillating cells, with mean oscillation periods of 17 h. Increased glucose concentrations stimulated more cells to oscillate and resulted in higher average Ins2 gene activity per cell. Single-cell RNA sequencing showed that Ins2(GFP)HIGH β-cells were enriched for markers of β-cell maturity. Ins2(GFP)HIGH β-cells were also significantly less viable at all glucose concentrations and in the context of endoplasmic reticulum stress. Collectively, our results demonstrate that the heterogeneity of insulin production, observed in mouse and human β-cells, can be accounted for by dynamic states of insulin gene activity.
TonEBP in Myeloid Cells Promotes Obesity-Induced Insulin Resistance and Inflammation Through Adipose Tissue Remodeling
Authors: Lee Hwan Hee , Jeong Gyu Won , Ye Byeong Jin , Yoo Eun Jin , Son Keoung Sun , Kim Dong Ki , Park Hye-Kyung , Kang Byoung Heon , Lee-Kwon Whaseon , Kwon Hyug Moo , Choi Soo Youn
Published: September 2022

The phenotypic and functional plasticity of adipose tissue macrophages (ATMs) during obesity plays a crucial role in orchestration of adipose and systemic inflammation. Tonicity-responsive enhancer binding protein (TonEBP) (also called NFAT5) is a stress protein that mediates cellular responses to a range of metabolic insults. Here, we show that myeloid cell–specific TonEBP depletion reduced inflammation and insulin resistance in mice with high-fat diet–induced obesity but did not affect adiposity. This phenotype was associated with a reduced accumulation and a reduced proinflammatory phenotype of metabolically activated macrophages, decreased expression of inflammatory factors related to insulin resistance, and enhanced insulin sensitivity. TonEBP expression was elevated in the ATMs of obese mice, and Sp1 was identified as a central regulator of TonEBP induction. TonEBP depletion in macrophages decreased induction of insulin resistance–related genes and promoted induction of insulin sensitivity–related genes under obesity-mimicking conditions and thereby improved insulin signaling and glucose uptake in adipocytes. mRNA expression of TonEBP in peripheral blood mononuclear cells was positively correlated with blood glucose levels in mice and humans. These findings suggest that TonEBP in macrophages promotes obesity-associated systemic insulin resistance and inflammation, and downregulation of TonEBP may induce a healthy metabolic state during obesity.
Bromeliad phytotelmata: the first scientometric study
Authors: Rezende Lopes Filho Danilo , Tatiane Mantovano Tatiane , Perbiche Neves Gilmar , José da Silva Natanael , dos Santos Miranda Viviane Bernardes , Lansac-Tôha Fábio Amodêo
Published: September 2022

Some representatives of this family have the ability to form phytotelma environments through the accumulation of water and organic matter, serving as substrate and food for a variety of organisms. Here, a scientometric analysis was carried out to show trends in scientific work on bromeliad phytotelmata and the importance of these microcosms for the maintenance of biodiver¬sity. The papers were analyzed using the Thomson Reuters, Scopus and Scielo databases between the years 1970 and 2021. Information was sought on the years of publications, geographic regions, countries, article design (descriptive, predictive, ex¬perimental, review), focus (ecological, biological, molecular), and ecological level of study (organism, population, community and ecosystem). South America presented the highest number of works developed with the subject and also with researchers involved. Most studies presented predictive designs focusing on community ecology. Insecta, followed by Crustacea and Anu¬ra, were the most studied groups of organisms. The results contribute to a better understanding of biodiversity in bromeliad phytotelmata, pointing out gaps and trends in research directed at these natural microcosms.
O IMPACTO DA CRISE BRASILEIRA POR MEIO DE INDICADORES FINANCEIROS NA ESTIMAÇÃO DA LIQUIDEZ NA TESOURARIA DE ALGUMAS EMPRESAS
Authors: Nunes Rodolfo Vieira , Sales George André Willrich
Published: September 2022

Compreender a crise nas empresas em relação a liquidez é de extrema importância para identificar as empresas mais ou menos solventes. O objetivo deste artigo é investigar o impacto da crise fiscal brasileira na tesouraria de algumas empresas nacionais, por meio de indicadores que melhor caracterizam o comportamento da tesouraria líquida, referência à Teoria da Liquidez. A metodologia consiste em uma regressão em Dados em Painel, utilizando a liquidez como variável dependente, os indicadores financeiros como variáveis explicativas e o índice CODACE como variável binária. Os resultados evidenciam uma relação positiva e significativa entre a liquidez e as variáveis dependentes NCG e ST. Das variáveis independentes, apenas 3 indicadores não se mostraram significante em nenhuma das regressões, enquanto a variável dummy CODACE foi significante negativa, ratificando que em períodos de crise as empresas tendem a enfrentar impactos negativos tanto na parte operacional e financeira da tesouraria, diminuição da liquidez.
INVESTIGAÇÃO SOBRE O CONHECIMENTO DOS PROFISSIONAIS DE MARKETING EM RELAÇÃO A FINANÇAS
Authors: Tae Ho Shin Charles , Ferraz Viana Gimenes Giselle , Lopes da Silva Fabiana , Paiva Souza Rodrigo
Published: September 2022

O estudo tem por objetivo investigar o nível de conhecimento dos profissionais de marketing em relação a finanças e, adicionalmente, analisar como os profissionais da área analisam e mensuram a performance dos investimentos de marketing, para contribuir com o objetivo de maximização do retorno. Foi elaborado uma survey aplicada à profissionais da área marketing, com a obtenção de 27 respondentes para a análise final. Com base nos resultados, é possível verificar que mesmo com a importância da análise dos investimentos em marketing em termos financeiros, os profissionais da área possuem dificuldades para a mediação dos retornos dos investimentos, sugerindo a necessidade de uma melhor preparação e alinhamento com a área de finanças.
OS IMPACTOS CONTÁBEIS E FISCAIS DAS ALTERAÇÕES QUE REGULAM O ÁGIO NO BRASIL: UM ESTUDO RETROSPECTIVO DE 1977 A 2019
Authors: Ferreira Erika Borges , Castilho da Silva Ferreira Bernardo Luis , Bella Martini Miguel , Satie Leão Oki Patrícia
Published: September 2022

É um estudo retrospectivo sobre as alterações, de 1977 até hoje, nas formas de tratamento contábil e fiscal do ágio. Diante dessas alterações, criou-se o interesse de mensurar e comparar os impactos contábeis e fiscais, bem como analisar o reconhecimento, mensuração e divulgação do ágio. É uma pesquisa documental com base nos demonstrativos contábeis da BRF S.A., ajustando-os em relação ao ágio, no âmbito fiscal/contábil, de acordo com as normas de cada período. Os resultados demonstram que os impactos decorrentes dessas alterações, relacionam-se à variação no resultado apresentado aos stakeholders e ao consumo de fluxos de caixa em relação as obrigações tributárias. De forma genérica, a não permissividade para o reconhecimento da despesa de goodwill, prevista no CPC15, favorece o resultado contábil da entidade, ao passo em que o reconhecimento desta despesa, conforme previsto nas Leis 9.532/97 e 12.973/14, contribui para a geração de fluxos de caixa para a entidade.
ASPECTOS ECONÔMICOS DA EQUIVALÊNCIA ENTRE CONCESSÃO DE DESCONTO OU MANUTENÇÃO DE PRAZO PARA PAGAMENTO
Authors: Silva Oliveira Antonio Benedito
Published: September 2022

A tomada de decisão sobre a concessão de prazo, ou, de desconto envolve aspectos econômicos, operacionais e financeiros e tem aspectos estratégicos. Deste ponto de vista, é de interesse a disponibilidade de informação que permita a percepção objetiva das consequências econômicofinanceiras da escolha realizada. Este trabalho busca responder à questão de pesquisa: como definir a equivalência entre a concessão de determinado e prazo e um alternativa de desconto? O objetivo desta pesquisa foi da proposição de um modelo com fórmulas relativamente simples, para estabelecer a relação entre desconto e prazo, considerando-se o custo de oportunidade. A pesquisa foi realizada com método dedutivo, a partir do problema constatado em depoimentos de alunos em turmas de graduação e mestrado e, também, em trabalhos de consultoria junto a executivos de empresas, no tocante a facilidade em se enxergar esta. A construção da solução envolveu articular conceitos de custo de oportunidade cfe., p.ex. (Catelli, 2001), (Ross, Westerfield, & Jaffe, 1995), e, (Gitman, 1984); valor do dinheiro no tempo (Gitman, 1984), (Ross, Westerfield, & Jaffe, 1995); a tridimensionalidade da gestão em termos de gestão econômica, operacional e financeira, p.ex. (Guerreiro, 1989), (Catelli, 2001); elasticidade preço (Samuelson, 1979); definição de desconto sobre vendas: impactos e finalidades (Futrell, 2003); tomada de decisão e uso de simulação, cfe. (Catelli, 2001), (Guerreiro, 1989), p.ex. Acreditase que o objetivo tenha sido atingido, pois, foram apresentadas equações que permitem relacionar de forma objetiva prazo e desconto, considerando-se o custo de oportunidade do capital para a empresa e não apenas dos juros embutidos no preço de venda a prazo, com vistas a reconhecer os impactos econômicos para  a empresa do prazo concedido e assim estabelecer a equivalência financeira com o desconto relativo. Acredita-se que seja adequado a qualquer tipo de atividade: comercial, industrial, de serviços, ou, financeira, sendo relativamente simples, a inserção do risco no modelo proposto.
O IMPACTO DAS COPARTICIPAÇÕES NAS PROJEÇÕES DE SINISTRALIDADE DAS COOPERATIVAS MÉDICAS NO BRASIL
Authors: Coronetti de Paiva Morian , Baltazar Leonardo , De Borba Trajano Brenda , Lumertz José Antônio
Published: September 2022

O mercado de Saúde Suplementar brasileiro enfrenta diversos desafios para manter o índice de sinistralidade das Operadoras de Planos de Saúde em um patamar aceitável, assim, diversos mecanismos são utilizados em tentativas de redução deste índice para possibilitar a continuidade de operação deste mercado, sendo um destes a coparticipação. Este estudo buscou verificar o impacto das coparticipações nas projeções de sinistralidade das Cooperativas Médicas no Brasil. Para realizar as projeções de cenários, foram utilizadas simulações de Monte Carlo com base nos dados do período de 2015 a 2019. O estudo verificou que existe um impacto significativo financeiro e estatístico na redução dos índices de sinistralidade quando utilizado o mecanismo da coparticipação nos Planos de Saúde, apresentando contribuição para o meio acadêmico, para a área atuarial e para o mercado de saúde suplementar, de forma a confirmar o papel da coparticipação na redução do índice de sinistralidade.
A IMPORTÂNCIA DA SEGREGAÇÃO DE OUTRAS ATIVIDADES ECONÔMICAS AUTÔNOMAS NO RECOLHIMENTO DA CONTRIBUIÇÃO PREVIDENCIÁRIA AO INSS DO PRODUTOR RURAL PESSOA JURÍDICA E O PLANEJAMENTO TRIBUTÁRIO
Authors: Soares Andréa , Roveri Ricardo Bagni , Gonzales Alexandre , Santos Fernando de Almeida
Published: September 2022

O objetivo do estudo de caso foi analisar o impacto tributário de uma possível alteração do regime de recolhimento da contribuição social previdenciária patronal de um produtor rural pessoa jurídica do ramo avícola em relação à incidência sobre o faturamento ou a folha de pagamento pela oportunidade de vender excedente de ração da produção própria. Para tanto, levantou-se os dados contábeis tanto da demonstração de resultado como da folha de pagamento da empresa para simular eventual desenquadramento tributário do atual recolhimento da contribuição social sobre o faturamento passando a recolher sobre a folha de pagamento em comparação a possíveis ganhos com a oportunidade de comercialização de excedente de ração e análise de planejamento tributário. Apesar da possibilidade de agregar valor com essa atividade adicional de venda de sobrante de ração, os impactos tributários com possível alteração de regime de recolhimento da contribuição social, se mostraram relevantes.
CARACTERIZAÇÃO DO MERCADO ACIONÁRIO BRASILEIRO POR MEIO DOS CÁLCULOS DE ENTROPIA, MUTUAL INFORMATION E A COMPLEXIDADE DE LEMPEL-ZIV
Authors: Crepaldi Antonio Fernando , `Pinto Pacheco Vinícius Henrique
Published: September 2022

Podemos descrever os mercados financeiros como um Sistema Complexo, e a aplicação de conceitos de áreas como da Econofísica e da Teoria da Informação fornecem bases para a compreensão de suas características e padrões. Desta forma, buscou-se por meio dos cálculos da Entropia, Mutual Information (MI) e da Complexidade de Lempel-Ziv (CLZ) caracterizar de forma empírica séries de retornos diários de ações da Bolsa de Valores de São Paulo entre 2014 e 2018. Dos resultados, viu-se que os dias mais entrópicos da série foram também os de variações de log retornos e de volume do Ibovespa consideravelmente superiores à sua média diária, reforçando o fato de que esses configuram-se como dias de menor redundância e maior a conteúdo informativo. Para MI, os clusters mostraram-se mais delimitados que os encontrados via Correlação de Pearson. Em CLZ, a baixa variabilidade das substrings demonstram uma série com padrões cíclicos e de baixa complexidade.
IMPLEMENTASI MODEL PEMBELAJARAN KOOPERATIF BERBANTUAN MIND MAP UNTUK MENINGKATKAN HASIL BELAJAR PKN SISWA KELAS IX.2 SMP NEGERI 5 DUMAI TAHUN PEMBELAJARAN 2011/2012
Authors: Hartini Hartini
Published: September 2022

The purpose of this research is increasing PKn studying report with Mind Map cooperative learning model for IX.2 grade SMP Negeri 5 Dumai. The changing aim variable in this research is PKn studying report, meanwhile the action variable is Mind Map cooperative learning. The form of the research is action research class using cycle model that contain 2 cycles. Each cycles contain 4 steps, there are planning, action, observation and reflection. 40 students of IX.2 grade SMP Negeri 5 Dumai as a subject there are 12 boys and 28 girls. Collecting data methods are test, observation, and documentation. Analysis data method is descriptive analysis. Based on researching result, we can say that there is an increasing result after doing class action using Mind Map cooperative learning model for PKn subject. It can be shown in students’ frequency before and after action class to the students is increase. Cycle I shows the increasing of PKn subject with classical percentage that is 77,5% or 31 students. On cycle II shows the increasing PKn subject that reach average score (KKM) is about 95% or 38 students.
HUBUNGAN TINGKAT PENGETAHUAN CLINICAL INSTRUKTUR (CI) DENGAN PELAKSANAAN BIMBINGAN METODE BEDSIDE TEACHING (BST)
Authors: Helda Ely Yusma
Published: September 2022

Learning processs in practical clinic is one of those determining the quality of the graduates. Ironically, in its practice, there are still some barriers in the clinical pedagogy such as the limited cases and the limited time for clinical lecturers to teach. It shows the weakness of evaluation system in the process of guidance. This research aims at determining clinical instructure (CI) understanding in relation to the implementation of Bedside Teaching (BST) Method Buidance in RSUP. Dr. Djamil, Padang in 2014. The research is analytical research with cross sectional study. The population is all clinical instructures (CI) in the midwifery ward, surgery ward, and interne ward (67 people in total where all are used as total sampling) The primary data collection was done in July 2014. The data was analyzed by univariat  and bivariat methods using chi-square test. The result showed that 67,2% CI have good comprehension but 53,7% CI were lack in undergoing Bedside Teaching (BST) Method guidance. Thus, there is a relation between Clinical Instructure (CI) comprehension level and the implementation of Bedside Teaching (BST) Method guidance. Concerning this, it is expected for RSUP Dr. Djamil to give a training to all CI and to create SPO for the students’ guidance especially about Bedside Teaching (BST) Method guidance.
PENINGKATAN KEMAMPUAN MENGAJAR GURU BINAAN MELALUI SUPERVISI KUNJUNGAN KELAS DENGAN TEKNIK OBSERVASI KELAS SECARA LANGSUNG DI SD NEGERI 90 BENGKULU SELATAN
Authors: Supranuddin Supranuddin
Published: September 2022

The main discussion in this school’s action research is the supervisory teachers through classroom visits supervision with direct observation technique class in particular aspects of learning process of planning and implementation of Teaching and Learning Process (PBM) in the classroom to improve the ability of teachers teaching in Elementary School 90 South Bengkulu. The objective of this school action research (PTS) is to (1) determine the readiness of the learning process planning; (2) assist the teacher in preparing the planning process so that the learning and teaching capabilities can be increased, and (3) determine the extent of supervision visits classes with direct classroom observation techniques on the ability of teachers to teach in an attempt to improve the learning quality in Elementary School 90 South Bengkulu. The results at the end of the cycle to the results of the pre-coaching and coaching study lesson plan for an average value of all research subjects obtained were classified as good (74.3) according to the standard process. Of all research subjects, the results of the post-mentoring and coaching study lessons plan were classified as good (82.5) according to the standard process, while the results of the teachers’ teaching ability in the implementation of the learning process were categorized well (81) according to the standard process. It can be concluded that the form of supervision visits classes with direct classroom observation techniques can improve the ability of teachers to teach in Elementary School 90 South Bengkulu.
PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE EXPLICIT INSTRUCTION (EI) TERHADAP HASIL BELAJAR MAHASISWA TINGKAT II PADA MATA KULIAH PELAYANAN KELUARGA BERENCANA (KB) DI STIKES RANAH MINANG PADANG
Authors: Komalasari Wuri
Published: September 2022

Cooperative learning model Explicit Instruction (EI) is a direct instructional model specifically designed to develop students' comprehension of procedural and declarative knowledge that can be taught with the step-by-step pattern. Based on the results of student learning in the subject of family planning services, the average score for each score is as follows: A (14.12%), B (69.41%), C (12.94%), and D (3.52%). This illustrates that there are still some students who get less optimal score. This study aims to determine the effect of Cooperative Learning Model Explicit Instruction (EI) to the students’ learning outcomes of level II in STIKes Ranah Padang Minang. This research is experimental. The population of this study is all second level students of STIKes Ranah Minang Padang (112 students). The sample selection is done through purposive sampling. The class selected to be the sample is class A as the experimental class and class B as the control class. This research was conducted in STIKes Ranah Minang Padang for 2 weeks beginning on July 1 to July 12, 2014. The results showed that learning outcomes’ achievement in the experimental class was higher than those in the control class. This was evident from the difference in the average of posttest experimental score where the experimental class gained up to 80.60 while the control class gained 70.90. After all, it was obtained that the thitung = 5.636 and ttable = 1.994. Because thitung 5.636 ˃ ttable = 1.994, then the hypothesis is accepted. From the research, it can be concluded that the application of cooperative learning model Explicit Instruction (EI) impacts on the student learning outcomes in Family Planning (FP) subject. It is expected that the lecturers will employ the cooperative learning model Explicit Instruction (EI) in Family Planning (FP) subject and other subjects.
ANALISIS PERKEMBANGAN KONSEPSI SISWA MENGENAI STRUKTUR ATOM DI SMA ADABIAH PADANG
Authors: Fitriza Zonalia , DJ Latisma , Mawardi Mawardi
Published: September 2022

The examination result of X grade students in SMA Adabiah Padang shows that most of the students comprehend less than 60% of the learning material about atom. It will impact to the learning in the higher grade, therefore, a study held to know the conceptual development of students. It was qualitative descriptive which explorative and cross sectional approach. The instrument is open ended questions which gave to 204 students to know their conception about atom. Their conceptions tend developed in the electron configuration of atom, electron configuration of ion, determination of period and group of atom. In Addition, majority of students had the correct concept about the basic particles of atom. Meanwhile, the concept about atom and atomic model did not change significantly. Most of them did not understand in the concept of wave mechanic atomic model.
PENINGKATAN KEMAMPUAN PENALARAN MATEMATIKA SISWA MELALUI MODEL PROBLEM BASED INSTRUCTIONAL (PBI)
Authors: Alyusfitri Rieke
Published: September 2022

Learning mathematics at school mostly involving mathematical reasoning abilities. Weakness in the reasoning of students in mathematics learning visible from students' mistakes in solving math problems.Efforts should be made to improve the ability of students' mathematical   reasoning   can   be   through   the   model   Problem   Based   Instrutional (PBI).Problem Based Instructional a learning that begins with the presentation of an authentic and meaningful issues that the students will be able to conduct investigations and menutut solving by the students themselves.So with the model Problem Based Instructional able to assist students in improving students' mathematical reasoning abilities.
USAHA MENINGKATKAN AKTIVITAS BELAJAR SISWA PADA PEMBELAJARAN KOMPUTER AKUNTANSI DENGAN BERBASIS TEKNOLOGI INFORMASI DAN KOMUNIKASI DI KELAS 2 AKUNTANSI 2 SMKN 1 SOLOK
Authors: Zuhilmi Zuhilmi
Published: September 2022

This research aimed to describe the activities of students in computer learning accounting accounting class 2 2 SMK Solok based on information technology and communications. This research is a class action research. Subjects of research is students in grade 2 Accounting I SMK 1 Solok learning year 2009/2010 in the third semester, the following study accounting computer as many as 33 students. The object of research is computer lessons accounting are included in a group of subjects productively (accounting expertise package) with the competence of the accounting cycle services company working with the computer through the MYOB accounting program. The results of this study is the use of media-based learning information and communication technology in learning accounting computer can increase the activity of students and also practice at the laboratory computer activity also increased, averaging more than 95% of students work diligently in the tasks given, students have high interest to repeat the steps and accounting procedures that have been described.
Peran Self-Efficacy Terhadap Self-Regulation Siswa pada Pembelajaran Jarak Jauh di SMA 2 Bukittinggi
Authors: Zul Firdaus
Published: September 2022

Pembelajaran jarak jauh dapat mempengaruhi siswa dalam mengikuti proses pendidikan. Regulasi diri siswa dalam belajar adalah salah satu cara siswa untuk mengelola strategi belajarnya. Didukung juga oleh efikasi diri yang bisa meningkatkan kualitas pembelajaran siswa. Penelitian ini merupakan penelitian kuantitatif dengan pendekatan deskriptif korelasional yang bertujuan untuk mengetahui peran efikasi diri terhadap regulasi diri siswa pada pembelajaran jarak jauh di SMA 2 Bukittinggi. Subjek dalam Penelitian ini sejumlah 359 siswa dari kelas 10,11 dan 12. Alat pengumpulan data menggunakan skala Likert yang terdiri dari skala efikasi diri dan skala regulasi diri. Teknik analisa data yang digunakan yaitu korelasi analisis regresi berganda dengan bantuan SPSS 16.0 for windows. Berdasarkan hasil analisis data diperoleh (r) = 0,824 dengan taraf p = 0,000 (p<0,05). Pengaruh signifikan dari efikasi diri terhadap regulasi diri sebesar r2 = 67,9% sedangkan 32,1% regulasi diri ditentukan oleh faktor lain seperti pengetahuan, motivasi dan kemauan diri. Kesimpulan dalam penelitian ini adalah ada hubungan positif antara peran efikasi diri dengan regulasi diri siswa pada pembelajaran jarak jauh di SMA 2 Bukittinggi.
Features of changes in the internal organs of the golden grey mullet Chelon auratus (Risso, 1810)
Authors: Nevalennyy Aleksandr , Chaplygin Vladimir Aleksandrovich , Fedorova Nadezhda Nickolaevna
Published: September 2022

The purpose of the study is to analyze the changes in the internal organs of golden mullet specious caught in May 2022 in the scientific expeditions to the western part of the Caspian Sea. Mature mullets were examined. The caught species were weighed and measured. There were made 152 histological sections of 10 species (liver, spleen, gills, ovaries, muscles). The studied species were 3-4 years old. The collected samples were processed by classical histological techniques. According to the results of the conducted histological research, there have been found the numerous changes in the studied organs that indicate the adaptive capabilities of the fish: microcirculatory disorders (extensions of different sizes and durations in time), different abnormalities in the gills structure (proliferation of multilayer non-keratinizing epithelium of filaments and lamellae usually met in different species in the Volga river today), fatty hepatic degeneration to some degree, hemosiderosis of the spleen. Changes in the epithelium of the gills were estimated as 2.8 points, changes in the spleen – as 3.1 points. Hemosiderosis was also detected in the liver parenchyma; the changes made 2.5 points. Some skeletal muscle fibers were segmented; their change was estimated as 2.5 points. Cardiomyocytes had different thickness; their changes were estimated as 2.3 points. In general, the studied tissue and cell changes of the gill apparatus, liver, spleen, skeletal muscles and ovary indicated the morphological rearrangement caused by the adaptive response of the fish organisms to the environmental conditions.
Geometrical Study of Channel Profile under Incremental Forming Process: Numerical Simulation
Authors: Dionisius Felix , , Sugiri , Endramawan Tito , Haris Emin
Published: September 2022

Incremental forming is one of the innovative manufacturing technologies in plate sheet forming techniques. With the incremental forming process, plate formation can be as desired and also easily applied to the manufacturing with a limited number of products. This paper is conducted to find out the smallest geometry of deviation between the design with the results of the process and the best step-down selection using a single point incremental forming (SPIF). The variable variations used in this research was 2-6 (mm) of step-down where this process uses a punch tool in the form of a hemispherical / half ball and with 2 clamps. Numerical simulation method with explicit finite element model was used as a virtual experiment with the helical shaped tool movement. The tool moves to form a blank with a size of 12x160x200 mm into a channel profile with a speed of 8 mm/s. The result showed that the deviation between the product and the design has increased from step down 2-6 mm. The smallest deviations were 3.63 mm for x axis and 12,549 mm of total depth or 4.57% for y axis with 2 mm step down parameter. Whereas for step down 4 mm had the deviation of 3.9 mm and 13.853 of total depth. But for step down 6 mm had failed / damaged.
Computation of Air Entrainment into a Mixing Pipe: An Experimental and Numerical Analysis
Authors: Mishra Dipti Prasad , Paramanik Subhash Chandra
Published: September 2022

Computations of entrainment of air into a pipe were performed by placing an air jet at the bottom of the pipe. An experiment was performed with cylindrical mixing pipe having different diameter, length and jet location. A flow meter was used to measure the flow through the nozzle and velocity at the mixing pipe exit was measured by anemometer. CFD analyses were performed using Ansys-Fluent 16 to match the experimental results for exit velocity and amount of air sucked into the pipe. Further numerical investigations were performed for a mixing pipe with hot jet to estimate the amount of air entrained as a function pipe diameter, pipe length, nozzle protrusion and pipe shape. It was found from the numerical simulations there exists an optimum pipe length and nozzle protrusion for highest entrainment of air. Also a particular frustum shaped pipe could suck highest air compared to cylindrical shaped pipe.
Fekete-Szego inequality of bi-starlike and bi-convex functions of order b associated with symmetric q-derivative in conic domains
Authors:   ", Rayaprolu Bharavi Sharma ,   Department of Mathematics, Kakatiya University, Warangal-506 009, Telangana, India e-mail: rbsharma005@gmail.com", Kalikota Rajya Laxmi ,   "Department of Mathematics, SRIIT, Hyderabad, India e-mail: rajyalaxmi2206@gmail.com", Magesh Nanjundan ,   "Post-Graduate and Research Department of Mathematics Government Arts College for Men, Krishnagiri - 635 001, Tamilnadu, India (Corresponding author) e-mail: nmagi 2000@yahoo.co.in"
Published: September 2022

"In this paper, two new subclasses of bi-univalent functions related to conic domains are de ned by making use of symmetric q-di erential operator. The initial bounds for Fekete-Szego inequality for the functions f in these classes are estimated."
A dynamic problem with wear involving electro-elastic-viscoplastic materials with damage
Authors:   ", Bachmar Aziza ,   University of Setif 1, Algeria e-mail: aziza bechmar@yahoo.fr", Boutechebak Souraya ,   "University of Setif 1, Algeria e-mail: bou souraya@yahoo.fr"
Published: September 2022

"A dynamic contact problem is considered in the paper. The material behavior is described by electro-elastic-viscoplastic law with piezoelectric effects. The body is in contact with damage and an obstacle. The contact is frictional and bilateral with a moving rigid foundation which results in the wear of the contacting surface. The damage of the material caused by elastic deformations. The evolution of the damage is described by an inclusion of parabolic type. The problem is formulated as a coupled system of an elliptic variational inequality for the displacement, variational equation for the electric potential and a parabolic variational inequality for the damage. We establish a variational formulation for the model and we prove the existence of a unique weak solution to the problem. The proof is based on a classical existence and uniqueness result on parabolic inequalities, differential equations and fixed point arguments."
Erratum to the paper Bogdan, M., "Some comments on a linear programming problem"
Authors:   ", Bogdan Marcel ,   University of Medicine, Pharmacy, Science and Technology ",   ",   George Emil Palade",   ",   , Faculty of Engineering, 38, Gh. Marinescu Street, 540139 Targu Mures, Romania e-mail: marcel.bogdan@umfst.ro"
Published: September 2022

"The present paper corrects an assertion of the author from [1]. The pivoting algorithms referred to, search for solving the linear programming problem."
Trabajadores de la economía gig en la Unión Europea: hacia un cambio en su clasificación jurídica
Authors:   Catedrático de Derecho Comunitario y Tecnológico, TalTech-Tallinn University of Technology, Kerikmäe Tanel , Kajander Aleksi ,   Docente investigador, TalTech-Tallinn University of Technology
Published: September 2022

Aunque la clasificación de los trabajadores de la economía gig lleva muchos años siendo motivo de controversia en el marco del derecho laboral europeo, la aparición de la pandemia de la COVID-19 la ha convertido en una prioridad. El papel de la economía gig ha cambiado: de ser una opción laboral para complementar los ingresos se ha convertido, para muchos, en la fuente principal de ingresos, por lo que la Unión Europea (UE) anunció su intención de abordar esta cuestión. En 2021, en el ámbito europeo, se realizó una intensa actividad en referencia a la jurisprudencia de la economía gig, con sentencias de tribunales supremos de varios estados miembros y nuevas leyes que han clasificado a los participantes en el mercado laboral de este sector. Este artículo parte de tres estudios de caso –Reino Unido, Países Bajos y España– para explorar los desarrollos recientes en jurisprudencia de la economía gig y sacar conclusiones para el futuro.
Gestionar la complejidad: la contribución de la UE a la gobernanza de la inteligencia artificial
Authors:   Investigador predoctoral, Departamento de Derecho, Escuela de Negocios y Gobernanza, TalTech-Tallinn University of Technology, Antonov Alexander
Published: September 2022

En un contexto de ecosistemas digitales mundialmente cuestionados, este artículo examina el papel y la contribución de la UE al concepto emergente de la gobernanza de la inteligencia artificial (IA). Entendida esta por la UE como el ingrediente fundamental para la innovación, la adopción de sistemas de IA ha alterado nuestra comprensión de la gobernanza. Enmarcando la IA como una tecnología digital autónoma integrada en las estructuras sociales, este artículo argumenta que se puede aumentar la confianza de la ciudadanía de la UE hacia la IA si la innovación que esta comporta se fundamenta en un enfoque basado en los derechos fundamentales. Ello se evalúa a partir del trabajo del Grupo de Expertos de Alto Nivel en IA (que ha desarrollado el marco para una IA fiable) y la propuesta recién aprobada de la Comisión Europea para una Ley de inteligencia artificial (con un enfoque basado en el riesgo).