bluuebunny/crossref_metadata_2025 huggingface dataset:
Desvelamento da percepção dos catadores de material reciclável: possibilidades à resistência
Authors: Da Silva Rafael Cardoso , Marcomin Fatima Elizabeti
Published: June 2020

A pesquisa qualitativa, fenomenológica, aborda a Percepção em Merleau-Ponty. Apresenta-se como questão-problema: como @s catador@s de material reciclável se reconhecem/percebem enquanto sujeitos/atores no contexto de atuação na sociedade? As informações da pesquisa (dados) foram “buscadas” junto a seis sujeitos/atores, três do sexo masculino e três do sexo feminino, catador@s residentes em diferentes bairros de um município do sul de Santa Catarina. A busca por informações foi realizada por meio de conversas gravadas, observações, fotos, desenhos, mediante a aprovação dos sujeitos/atores estudados de acordo com documentos submetidos ao Comitê de Ética e Pesquisa. O fenômeno estudado foi interpretado com base em adaptações do Método Fenomenológico de Colaizzi e as suas essências e assertivas principais destacadas, vislumbrando processos e potencialidades de autorre(conhecimento), pertencimento e visibilidade dos sujeitos/atores também entre si e a sociedade pelo viés da educação e/ou da Educação Ambiental. Os resultados revelam que o desvelamento da percepção acerca dos temas abordados constitui-se de grande valia para ações educativas críticas, transformadoras e emancipadoras em Educação Ambiental, que intensifiquem a atuação dos sujeitos como cidadãos críticos e criativos na definição de táticas de resistência. Além disto, @s catador@s relataram elementos que enriqueceram a reflexão acerca da problemática estudada. Como destaques, a importância do respeito, da honestidade e responsabilidade nas relações e a valorização do convívio social, isto é, na concepção de um ser ético e participativo, permitindo, assim, compreender alguns dos contextos permeantes em suas vidas.
Festa, Disputa territorial, Reexistência e Educação Ambiental desde el Sur: Um estudo de caso da Gran Marcha Carnaval de Tolima, Colômbia.
Authors: Stortti Marcelo Aranda , Flórez Espinosa Glória Marcela , Garcia Renzo Alexander
Published: June 2020

Neste trabalho, apresentamos uma prática social e educativa chamada de Marcha Carnaval do movimento ambiental colombiando (Comité Ambiental en Defensa de la Vida). Essa ação coletiva ocorre uma vez ao ano desde 2011, pela ação da organização social Comité Ambiental en Defensa de la Vida em Ibagué, Departamento de Tolima (Colombia). Essa experiencia inovadora latinoamerica, nos motivou a estabelecer como objetivo desse estudo a dimensão educativa da ação cultural da Marcha Carnaval, levando-nos a perguntar: como na prática socioambiental do Comité Ambiental desenvolvem-se processos educativos de construção e transmissão de saberes culturais e da educação ambiental? Para tal, estabelecemos como referencial teórico a educação ambiental crítica, a ecologia política e açãocultural dialógica de Paulo Freire. A metodologia escolhida foi a de estudo de caso e utilizamos a técnica de análise de conteúdo de Laurence Bardin e sua classificação temática para analisar os dados coletados disponíveis em diferentes redes sociais e no sites/redes sociais e nos arquivos do Comitê Ambiental en Defensa de la Vida.
CONHECIMENTOS, VALORES E PRÁTICAS SOCIAIS REFERENTES À SEXUALIDADE: IMPLICAÇÕES NA FORMAÇÃO INICIAL DE PEDAGOGAS
Authors: Bastos Giséli Duarte , Vestena Rosemar de Fátima , Nunes Sepel Lenira Maria
Published: June 2020

O curso de Pedagogia é responsável por formar profissionais que, entre outras atuações possíveis, desempenharão papéis didáticos, pedagógicos e psicopedagógicos em diversos espaços educacionais. Abordar, no contexto escolar, sexualidade, com suas derivações biológicas e sociais, representa um desafio importante para esses educadores, tendo em vista as complexas relações e intervenções exigidas a partir da temática, as quais são relevantes para a formação integral dos indivíduos desde a infância. Assim, investigamos um grupo de treze pedagogas em formação inicial de uma instituição privada, localizada na região central do RS, Brasil, quanto às manifestações de conhecimentos (K), valores (V) e práticas sociais (P) (CLÉMENT, 2006),em relação à temática da sexualidade, materializadas após uma disciplina voltada ao assunto. Entre os resultados, analisados à luz da análise de conteúdo (BARDIN, 2011),destacamos uma incipiente utilização dos K por parte das estudantes quando questionadas sobre como agiriam no ambiente escolar, embasando suas ações, principalmente, em seus V. Ainda, encontramos V que suscitam certo grau de estigmatização das pessoas portadoras de HIV, bem como algumas manifestações de estereotipação de gênero, ao procurarem aconselhar que as meninas protejam-se contra gravidez e doenças sexualmente transmissíveis, abstendo os meninos do compartilhamento dessa responsabilidade. A partir dos resultados, consideramos ser essencial desenvolver estratégias na formação de pedagogos para a efetivação de uma aprendizagem conceitual que possa melhor balizar as práticas sociais desses profissionais, além de promover reflexões acerca, e possíveis alterações, dos valores que sustentam suas ações em relação à sexualidade.
PERCEPÇÃO DISCENTE FRENTE ÀS PRÁTICAS SUSTENTÁVEIS DE MICROBIOLOGIA NO ENSINO FUNDAMENTAL
Authors: Araújo Ana Léa de Oliveira , Pimentel Karine Silva , Araújo Jonas Felipe da Silva , Chaves Bruno Edson , Pantoja Lydia Dayanne Maia
Published: June 2020

O ensino de Microbiologia possui algumas dificuldades devido às características peculiares apresentadas pelos seres microscópicos, sendo necessário o professor buscar novos métodos e ferramentas para expor esse conteúdo em sala de aula. Para estudo do mundo microbiológico é preciso à utilização de estratégias e ferramentas didáticas que possam facilitar o processo de ensino e aprendizagem. Nesse ínterim, o presente trabalho objetivou elaborar e aplicar quatro aulas práticas em Microbiologia com a utilização de materiais alternativos e de fácil obtenção para alunos do 7º ano do Ensino Fundamental do município Fortaleza-CE e analisar através de questionário a percepção dos discentes sobre as aulas práticas realizadas. Foram elaborados quatro planos de aulas com base na literatura atual em Microbiologia e um questionário com base na escala de Linkert. Este trabalho mostrou que 80% dos alunos pesquisados possuem conhecimentos sobre os micro-organismos, 88,4% dos discentes participantes da pesquisa consideram que a realização de aulas práticas é muito importante para o aprendizado em Ciências quando o conteúdo estudado se refere a Microbiologia e 75% dos discentes afirmam que a busca de materiais alternativos para a realização de aulas práticas contribuiria para que essas aulas ocorressem com maior frequência. Conclui-se que os alunos consideram a aula prática essencial para seu aprendizado e importante o uso de materiais alternativos no processo ensino e aprendizagem em Microbiologia, além de mostrar a necessidade do uso de atividades que sejam dinâmicas e atraentes para os alunos.
CONSTRUÇÃO DE UMA TAXONOMIA SOBRE O ENTENDIMENTO DO CONCEITO CIENTÍFICO DE DENSIDADE BASEADA NA NOÇÃO DE PERFIL EPISTEMOLÓGICO
Authors: De Melo Viviane Florentino , Amantes Amanda , Vieira Rodrigo Drumond
Published: June 2020

Neste estudo apresentamos a elaboração de uma taxonomia para o conceito científico de densidade baseada na noção de perfil epistemológico de Bachelard. Para tanto, explicitamos as diferentes facetas que o conceito assume nas doutrinas filosóficas do empirismo e do racionalismo e elencamos os entendimentos referentes aos conteúdos escolares de densidade abordados no ensino médio na disciplina de Química. A hierarquia para cada doutrina foi constatada empiricamente por meio da aplicação de um questionário para estudantes do ensino médio que já haviam estudado o conteúdo. A partir das respostas analisadas, obtivemos parâmetros que orientaram a construção de uma taxonomia para ser utilizada na análise do entendimento sobre o conceito de densidade na disciplina de Química. A construção da taxonomia neste estudo e a explicitação hierárquica dos entendimentos sobre densidade podem também informar a construção de materiais didáticos direcionados à prática docente, assim com promover um esclarecimento sobre como os estudantes entendem o conceito científico de densidade.
DIABETES MELLITUS E SUAS PERSPECTIVAS NA DISCIPLINA DE BIOLOGIA: ESTUDO DO CONHECIMENTO DISCENTE DO ENSINO MÉDIO PÚBLICO EM VOLTA REDONDA, RJ.
Authors: Carvalho Luciana Cristina do Carmo Silva , Lee Lundoi Tobias , Batista Vanessa de Almeida , Garcia Sabrinna Aires , Medeiros Letícia Piedade de
Published: June 2020

O percentual da população mundial com diabetes mellitus é de 8,8% pontuando a elevada prevalência desse distúrbio multifatorial crônico. Em vista disso, colaborar com informações úteis à população torna-se um desejo urgente. Destarte, têm-se a escola como instrumento capaz de difundir essa reflexão e, por conseguinte, estimular os discentes quanto à prevenção da diabetes, sobretudo o tipo 2, através da reeducação dos hábitos de vida que tangem à alimentação e atividades físicas. O presente estudo dedicou-se a avaliar o conhecimento dos estudantes do Ensino Médio, sobre a diabetes e suas perspectivas já trabalhadas na educação – compreendendo as áreas da saúde, corpo humano, metabolismo energético, nutrição, sistema endócrino e imunológico – em escolas públicas no município de Volta Redonda, RJ. Optou-se por um estudo descritivo e para coleta de dados houve a aplicação de um questionário fechado. Foram analisadas as propostas estabelecidas no PCN e Currículo Mínimo do Estado, para que o material produzido estivesse integrado aos aspectos em discussão na sala de aula pública. Os resultados demonstraram que as maiores imprecisões dos estudantes compreenderam: o reduzido reconhecimento da diabetes enquanto epidemia mundial e suas consequências frente às complicações de diversos órgãos, a falta de conhecimento quanto ao tipo gestacional, mecanismo de ação da insulina e desconhecimento dos entrevistados acerca de certos fatores como condições de risco à diabetes. Portanto, apesar de alguns conceitos da diabetes serem admitidos, ainda persistem a ausência de informações seguras, sendo recomendável a mobilização das secretarias de saúde e educação, no que se inclui a Escola.
CONSTRUÇÃO DE UM MATERIAL EDUCATIVO PARA O ENSINO DA TANATOPEDAGOGIA NA ESCOLA
Authors: Genaro |Martins de Oliveira Bruna Tadeusa , De Medeiros Marcia Maria
Published: June 2020

Este artigo descreve os processos de uma pesquisa de Mestrado em Ensino em Saúde, a qual buscou elaborar um material educativo objetivando auxiliar professores(as) a conduzirem discussões sobre a morte nos primeiros anos do Ensino Fundamental. Tal estudo foi proposto devido à relevância de se abordar educativamente esta temática no contexto escolar e reconhecendo a complexidade que envolve esta tarefa, bem como a escassez de cursos e ferramentas que subsidiem os(as) profissionais da educação neste sentido. Consideramos que o trabalho realizado traz importantes contribuições aos campos do ensino e da saúde, ao passo que aproxima ambos os setores pela proposta de fomentar e facilitar processos de ensino-aprendizagem sobre uma temática que traz implicações para a saúde mental das pessoas em todas as idades. Portanto, o presente artigo objetiva apresentar as etapas de tal investigação e seu resultado, o livro intitulado Por que, quando e como falar sobre a morte na escola: material de apoio ao(a) professor(a) dos anos iniciais do Ensino Fundamental.
Perilaku Berisiko dan Keluhan Subjektif Memori (KSM) pada Kelompok Umur 25 Tahun ke Atas di Kota Bogor Tengah
Authors: Pradono Julianty
Published: June 2020

The prevalence of subjective cognitive complaints (SCC) is increasing over the last 10 years. Subjectivecognitive complaints reflect early signs of neurodegenerative disease that will develop into dementia. Theobjective of the study was to obtain the incidence rate of SCC and to get predictors of SCC in Bogor City.The sample was prospective cohort sample as much as 3260 respondents with mean age 47.6 ± 9.7 yearsand no SCC at the beginning of analysis. Data were collected by interview, measurement and laboratoryexamination every 2 years. The risk factors include characteristics, health status and risk behavior. Datawas analyzed using chi-square test and regression logistic. The incidence of SCC was 216 persons per1,000 population per 2 years. After adjusting for age, the SCC predictors were less physical activity (OR1.9 time; 95% CI: 1.6-2.3), central obesity (OR 1.2; 95% CI: 1.0-1, 5), intake of sodium ≥2000 mg per day(OR 0.6; 95% CI: 0,5-0,7), mental disorder (OR 1.9; 95% CI: 1.6-2.3 ) and migraine (OR 1.6 times, 95% CI:1.3-1.9) on the incidence of SCC. It is concluded that the incidence rate of SCC is 216 people per 1,000population per 2 years. Predictors of SCC are less physical activity, central obesity, intake of sodium ≥2000mg per day, mental disorders and migraine. It is suggested that specific interventions such as increasingphysical activity regularly, maintaining ideal body weight with no risk of abdominal obese, avoiding stressand controlling salt intake, especially in elderly respondents do not take too low intake.
Abstrak
Prevalensi keluhan subjektif memori (KSM) semakin meningkat.Keluhan subjektif memorimencerminkan tanda awal penyakit neurodegeneratif yang akan berkembang menjadi demensia. Tujuan penelitian ini untuk mendapatkan incidence rateKSM dan mendapatkan prediktor terjadinya KSM di Kota Bogor.Sampel penelitian merupakan subsampelkohor prospektif sebanyak 3260 responden dengan rerata umur 47,6±9,7 tahun dan bebas KSMdi awal analisis.Data dikumpulkan dengan metode wawancara, pengukuran, dan pemeriksaan yang dilakukan setiap 2 tahun.Faktor risiko meliputi karakteristik, status kesehatan dan perilaku berisiko.Analisis data dengan uji chi-square dan logistik regresi.Hasilpenelitian menyatakan insiden KSMsebesar 216 orang per 1.000 penduduk per 2 tahun.Setelah menyesuaikan faktor umur, prediktor KSM adalah kurang aktivitas fisik (OR 1,9 kali, 95% CI:1,6-2,3), obesitas sentral (OR 1,2 kali, 95% CI:1,0-1,5), asupan natrium ≥2000 mg per hari (OR 0,6 kali, 95% CI: 0,5-0,7), gangguan mental (OR 1,9 kali, 95% CI:1,6-2,3) dan migren(OR 1,6 kali, 95% CI:1,3-1,9) terhadap insidens KSM. Disimpulkan bahwa insiden KSM sebesar 216 orang per 1.000 penduduk per 2 tahun.  Prediktor KSMadalah kurang aktivitas fisik, obesitas sentral, asupan natrium ≥2000 mg per hari, gangguan mental dan migren.Disarankan bahwa intervensi spesifik perlu dilakukan pada prediktor KSM.
Effect of Ethanolic Leaves Extract of Peperomia pellucida (L) Kunth as Antimalarial and Antioxidant
Authors: Yunarto Nanang , Ar Rossyid Hanief Mulia , Lienggonegoro Lisa Andriani
Published: June 2020

In malaria infection, the Plasmodium parasites break down hemoglobin in the host's red blood cells into toxic free heme and amino acids. Plasmodium is also capable of converting free heme to non-toxic hemozoin through a polymerization process. Malaria infection, on the other hand, also triggers the formation of free radicals that affect the pathophysiology of malaria. Suruhan leaf (Peperomia pellucida (L.)Kunth) has long been used as an antimalarial and is known to contain large flavonoids that function as antioxidants. In this study, leaf extraction, inhibitory activity of heme polymerization assay, and antioxidant activity assay were performed. Organoleptically, leaf extract obtained in the form of dry blackish green coloured extractswith a bitter taste and the typical scent of suruhan leaves. The yield of the extract obtained was 18.28%, water content was 7.73%, drying shrinkage was 9.16%, and total ash content was 0.46%. The IC50 value of inhibition activity of heme polymerization of ethanol extract of the Suruhan leaves was 0.93 mg / mL, smaller compared to chloroquine(1.48 mg / mL)while the value of IC50. antioxidant activity of ethanol extract of leaf syrup was 32.94 mg / mL compared to Vitamin C of 4 mg/mL. In conclusion,ethanolic leaves extract of suruhan has inhibitory activity of heme polymerization and antioxidant activity so that it has potentiality as antimalarial drugs
Pemberian Obat Massal Pencegah Filariasis di Desa Mbilur Pangadu Kabupaten Sumba Tengah
Authors: Lobo Varry , Bulu Anderias Karniawan , Noshirma Monika
Published: June 2020

AbstractFilariasis program in Indonesia is carried out through two main strategies, namely breaking the chain of transmission with mass drug administration in endemic areas and clinical case management. This research was aimed to assess the implementation of administration of filariasis preventive drugs in Mbilur Pangadu village, Central Sumba Regency. Mass drug administration in Central Sumba is the first program that has been carried out and has not been evaluated yet. The study was conducted with a descriptive survey method of Mbilur Pangadu Village population aged ≥ 13 years. The results showed that the majority of respondents who did not receive the drug were in all age groups (> 50%), sex male (64.7%), lack of knowledge about filariasis (85.8%) and distance of treatment posts difficult to reach (65.4%). Most respondents with high or low knowledge did not receive drugs (>50%), but they received the program well. Health activities have an impact of drug acceptance, which is 95.6%. The method of distribution and side effects of treatment does not affect the behavior of taking medication. Guidelines for the implementation of mass treatment must be known and can be carried out by all health workers to achieve the expected target.
AbstrakProgram filariasis di Indonesia dilakukan melalui dua strategi utama, yaitu memutuskan rantai penularan dengan pemberian obat massal di daerah endemis dan penatalaksanaan kasus klinis. Tujuan penelitian ini adalah untuk menilai pelaksanaan pemberian obat massal pencegah filariasis di Desa Mbilur Pangadu Kabupaten Sumba Tengah. Pemberian obat massal di Sumba Tengah adalah program yang pertama kali dilakukan dan belum pernah dievaluasi. Penelitian dilakukan dengan metode survei deskriptif pada seluruh penduduk Desa Mbilur Pangadu yang berumur ≥13 tahun. Hasil penelitian menunjukkan bahwa sebagian besar responden yang tidak menerima obat berada pada semua kelompok umur (> 50%), berjenis kelamin laki-laki (64,7%), pengetahuan kurang tentang filariasis (85,8%) dan jarak pos pengobatan sulit dijangkau (65,4%). Sebagian besar responden dengan pengetahuan tinggi maupun rendah tidak menerima obat (>50%), namun mereka menerima program dengan baik. Keaktifan petugas kesehatan sangat berdampak terhadap penerimaan obat yaitu 95,6%. Cara pendistribusian dan efek samping pengobatan tidak berdampak pada perilaku minum obat. Pedoman pelaksanaan pengobatan massal harus diketahui dan bisa dilaksanakan oleh seluruh petugas kesehatan agar mencapai terget yang diharapkan.
VARIOUS ENGLISH EQUIVALENTS OF INDONESIAN PREPOSITION 'PADA' IN 'LASKAR PELANGI' NOVEL TRANSLATION
Authors: Afrianto Afrianto , Ma'rifah Ummiatun
Published: June 2020

This research was aimed at finding out the English equivalent for Indonesian preposition pada and classifying its function based on Quirkâ€™s framework. By using descriptive-qualitative approach, this research administered documentary search to gather the data. The data were in the form of sentences containing preposition pada and its equivalents taken from a pair of and novels entitled LaskarPelangi (Indonesian) and The Rainbow Troops (English). From this research, Â it was revealed that the preposition â€˜padaâ€™ can be translated into various English equivalents. There are thirteen equivalents found in the form of preposition and one to infinitive verb. In addition, the preposition â€˜padaâ€™ has four functions which become the classification for the equivalents found, mnamely marker of place (on, for, to, at, and in), marker of time (on, in, at, within, and during), marker of recipient (to, for, of, with, around, throughout, about, at, and on), and marker of cause (with, by, and to face). In closing, this research posited that to determine the best English equivalent for pada, it is necessary to pay attention to the grammatical matters and the context of the sentence.
El cine soviético a propósito de los cien años de la Revolución rusa
Authors: Agudelo Castañeda Natalia
Published: June 2020

Este artículo realiza un breve recuento sobre los primeros años del cine ruso y su vinculación orgánica a los hechos que han sido denominados “Revolución rusa”, acaecidos en el año de 1917. Al respecto, vale la pena aclarar que las producciones cinematográficas que serán abordadas en este documento fueron producidas en el último periodo del zarismo en Rusia hasta poco después de la Revolución de Octubre en 1917. En este sentido, se expondrán pequeñas reseñas y marcos contextuales que logren ubicar especialmente la temática de las películas y la intención narrativa de sus directores, las cuales marcaron cercanías y distancias ideológicas con la revolución, como también nuevos tiempos en la narrativa cinematográfica y sus aportes, de cara al escenario mundial.
Reseña de Tesis Doctoral: Correa Ramírez, Jhon Jaime. Civismo y educación en Pereira y Manizales (1925-1950): Un análisis comparativo entre sus sociabilidades, visiones de ciudad y cultura cívica. Pereira: Editorial UTP, 2015. 270 pp.
Authors: Jaramillo Vélez Javier
Published: June 2020

El presente escrito tiene como propósito fundamental presentar unas breves reflexiones con un carácter descriptivo-analítico sobre algunos apartes de la tesis doctoral del profesor John Jaime Correa Ramírez, Civismo y Educación en Pereira y Manizales (1925-1950): Un análisis comparativo entre sus sociabilidades, visiones de ciudad y cultura cívica. De manera especial se analizó el capítulo II referido al ornato público: la visión estética y civilizada de la ciudad, escrito trabajado en clase durante el Seminario de Historia Regional y Urbana con el doctor Enrique Rodríguez Caporalli. Para alcanzar un mejor nivel de comprensión conceptual se hizo necesario abordar la lectura de las temáticas del primer capítulo, que desarrollan los procesos del cambio en la configuración urbana de las ciudades, un marco teórico referencial para el tema del civismo y la acción de las sociabilidades cívicas.De igual manera, se recurre a la lectura del artículo del doctor Correa “El discurso del civismo en Pereira o la ‘sacralidad’ de lo público durante el siglo XX”1. Es un texto esclarecedor para esta reseña, con miras a elucidar algunos elementos conceptuales en el abordaje teórico del problema de investigación que nos ocupa, en la línea de investigación recorrida por Correa Ramírez en los últimos años de su quehacer académico.
La lucha por la tierra de los indígenas de Cañamomo y Lomaprieta (1939-1946), a través de la correspondencia que reposa en el Archivo del Cabildo de Riosucio y Supía (Caldas)
Authors: Caicedo Luis Javier
Published: June 2020

Este artículo consiste en la transcripción documentos históricos referidos a la lucha por la tierra por parte de los indígenas de Cañamomo y Lomaprieta (Riosucio y Supía, Caldas), hallados en el archivo del cabildo de Cañamomo y Lomaprieta (a excepción del documento 02, localizado en el Archivo General de la Nación). Han sido acopiados, en distintas épocas, por encargo del cabildo, por el exgobernador Óscar Aníbal Largo y los colaboradores del resguardo Hernán Arango, Luisa Fernanda Montes y Luis Javier Caicedo.
Notas para investigar la presencia de la izquierda en Pereira (1916-1989)
Authors: Correa Ramírez Jhon Jaime , Niño Posada Christian Javier
Published: June 2020

Con este artículo se aportan unas notas generales para rastrear la trayectoria de la izquierda en la ciudad de Pereira en distintos momentos del siglo XX, y reconstruir los contextos históricos y las principales manifestaciones del accionar político de las izquierdas, con el fin de aportar a la comprensión sobre la consolidación de estas ideas políticas en la ciudad. Para ello, se acudió a una diversidad de fuentes entre las que se encuentran la prensa local, publicaciones como libros y artículos sobre el tema, y las memorias personales que dejaron algunos sujetos sobre su accionar en el seno de la izquierda. Más que conclusiones, se pretende suscitar la reflexión sobre la importancia de abordar nuevas fuentes e investigar sobre nuevos temas para aportar otras perspectivas de análisis en torno a una posible historiografía de la izquierda en la ciudad, la región y el país.
Missing data imputation in cardiometabolic risk assessment: A solution based on artificial neural networks
Authors: Vrbaski Dunja , Kupusinac Aleksandar , Doroslovacki Rade , Stokic Edita , Ivetic Dragan
Published: June 2020

A common problem when working with medical records is that some measurements are missing. The simplest and the most common solution, especially in machine learning domain, is to exclude records with incomplete data. This approach produces datasets with reduced statistical power and can even lead to biased or erroneous final results. There are, however, many proposed imputing methods for missing data. Although some of them, such as multiple imputation, are mature and well researched, they can be prone to misuse and are not always suitable for building complex frameworks. This paper explores neural networks as a potential tool for imputing univariate missing laboratory data during cardiometabolic risk assessment, comparing it to other simple methods that could be easily set up and used further in building predictive models. We have found that neural networks outperform other algorithms for diverse fraction of missing data and different mechanisms causing their missingness.
Study of cardiac arrhythmia classification based on Convolutional Neural Network
Authors: Dai Yonghui , Xu Bo , Yan Siyu , Xu Jing
Published: June 2020

Cardiovascular disease is one of the diseases threatening the human health, and its diagnosis has always been a research hotspot in the medical field. In particular, the diagnosis technology based on ECG (electrocardiogram) signal as an effective method for studying cardiovascular diseases has attracted many scholars? attention. In this paper, Convolutional Neural Network (CNN) is used to study the feature classification of three kinds of ECG signals, which including sinus rhythm (SR), Ventricular Tachycardia (VT) and Ventricular Fibrillation (VF). Specifically, different convolution layer structures and different time intervals are used for ECG signal classification, such as the division of 2-layer and 4-layer convolution layers, the setting of four time periods (1s, 2s, 3s, 10s), etc. by performing the above classification conditions, the best classification results are obtained. The contribution of this paper is mainly in two aspects. On the one hand, the convolution neural network is used to classify the arrhythmia data, and different classification effects are obtained by setting different convolution layers. On the other hand, according to the data characteristics of three kinds of ECG signals, different time periods are designed to optimize the classification performance. The research results provide a reference for the classification of ECG signals and contribute to the research of cardiovascular diseases.
Variational neural decoder for abstractive text summarization
Authors: Zhao Huan , Cao Jie , Xu Mingquan , Lu Jian
Published: June 2020

In the conventional sequence-to-sequence (seq2seq) model for abstractive summarization, the internal transformation structure of recurrent neural networks (RNNs) is completely determined. Therefore, the learned semantic information is far from enough to represent all semantic details and context dependencies, resulting in a redundant summary and poor consistency. In this paper, we propose a variational neural decoder text summarization model (VND). The model introduces a series of implicit variables by combining variational RNN and variational autoencoder, which is used to capture complex semantic representation at each step of decoding. It includes a standard RNN layer and a variational RNN layer [5]. These two network layers respectively generate a deterministic hidden state and a random hidden state. We use these two RNN layers to establish the dependence between implicit variables between adjacent time steps. In this way, the model structure can better capture the complex semantics and the strong dependence between the adjacent time steps when outputting the summary, thereby improving the performance of generating the summary. The experimental results show that, on the text summary LCSTS and English Gigaword dataset, our model has a significant improvement over the baseline model.
Cloud Computing Start-ups and Emerging Technologies: From Private Investors' Perspectives
Authors: Cong Yu , Du Hui , Vasarhelyi Miklos A.
Published: June 2020

We examine private investors' funding preferences for cloud computing start-ups that provide services in various information technology (IT) areas. The funding preference is measured in funding size and frequency. Using data from CrunchBase, an unconventional dynamic database, we find significantly positive associations between the funding preference and the cloud computing services provided in IT security, and Big Data and data analytics among cloud computing start-ups that have received at least two rounds of funding. The association is negatively significant when the cloud computing services are provided in ERP systems and when the funding preference is measured only in size. The results suggest that private investors differentiate among start-ups by specific technology and the lifecycle of the technology. During the sample period of rapid growth in the cloud computing industry, we document that the funding preference by private investors favors start-ups that provide services in critical, newer, and fast-growing IT areas.

Data Availability: Data are derived from a publicly available source.
The Robots are Coming … But Aren't Here Yet: The Use of Artificial Intelligence Technologies in the Public Accounting Profession
Authors: Bakarich Kathleen M. , O'Brien Patrick E.
Published: June 2020

In this paper, we survey public accounting professionals to gauge the extent to which Artificial Intelligence (AI), specifically Robotic Process Automation (RPA) and Machine Learning (ML), are currently being utilized, as well as perceptions about the impact and receptiveness to this technology. Quantitative and qualitative responses from 90 participants, representing various firms, service lines, and positions, indicate that both RPA and ML are currently not being used extensively by public accountants nor by their clients, and firms are conducting some, but not extensive training on these technologies. However, respondents strongly indicated that AI will significantly impact their daily responsibilities in five years and public accountants are very receptive to these changes. Additionally, we find that firm size appears to be the most significant factor impacting differences in responses. These results indicate that while large-scale AI adoption has not yet come to public accounting, substantial changes are on the horizon.
Exploring the Playground: Blockchain Prototype Use Cases with Hyperledger Composer
Authors: Kinory Ethan , Smith Sean Stein , Church Kimberly Swanson
Published: June 2020

While the accounting profession determines the possible future impacts of blockchain, universities will need to prepare students for a career using the disruptive technology. This necessitates hands-on training to teach the basics of modeling a blockchain network. Hyperledger is an open source blockchain advancement initiative hosted by The Linux Foundation (IBM n.d.). Hyperledger Composer is a specific Hyperledger project that provides a framework and necessary tools to facilitate new blockchain development. This proposal walks students through three use cases with the outcome of (1) familiarizing them with IBM's Hyperledger Composer (a virtual playground in which they can experiment with numerous blockchains), (2) orienting them to the underlying code that drives blockchains, and (3) improving their technological agility by directing them to manipulate the code and observe the functional effects.
3-Hydroxyisobutyrate, a strong marker of insulin resistance in type 2 diabetes and obesity that modulates white and brown adipocyte metabolism
Authors: Admin Ada , Nilsen Mona S. , Jersin Regine Å. , Ulvik Arve , Madsen André , McCann Adrian , Svensson Per-Arne , Svensson Maria E. , Nedrebø Bjørn G. , Gudbrandsen Oddrun A. , Tell Grethe S. , Kahn C. R. , Ueland Per M. , Mellgren Gunnar , Dankel Simon N.
Published: June 2020

Circulating branched-chain amino acids (BCAAs) associate
with insulin resistance and type 2 diabetes. 3-Hydroxyisobutyrate (3-HIB) is a
catabolic intermediate of the BCAA valine. Here we show that in a cohort of 4,942
men and women, circulating 3-HIB is elevated according to levels of
hyperglycemia and established type 2 diabetes. In complementary cohorts with
measures of insulin resistance, we found positive correlates for circulating 3-HIB
concentrations with HOMA2-IR, as well as a transient increase in 3-HIB followed
by a marked decrease after bariatric surgery and weight loss. During
differentiation both white and brown adipocytes upregulate BCAA utilization and
release increasing amounts of 3-HIB. Knockdown of the 3-HIB-forming enzyme HIBCH
decreases release of 3-HIB and lipid accumulation in both cell types. Conversely,
addition of 3-HIB to white and brown adipocyte cultures increases fatty acid
uptake and modulated insulin-stimulated glucose uptake in a time-dependent
manner. Finally, 3-HIB treatment decreases mitochondrial oxygen consumption and
generation of reactive oxygen species (ROS) in white adipocytes, while increasing
these measures in brown adipocytes. Our data establish 3-HIB as a novel adipocyte-derived
regulator of adipocyte subtype-specific functions strongly linked to obesity,
insulin resistance and type 2 diabetes.
Localized immunosuppression with tannic acid encapsulation delays islet allograft and autoimmune-mediated rejection
Authors: Admin Ada , Barra Jessie M. , Kozlovskaya Veronika , Kharlampieva2 Eugenia , Tse Hubert M.
Published: June 2020

Type
1 diabetes (T1D) is an autoimmune disease of insulin-producing β-cells. Islet transplantation is a promising
treatment for T1D, but long-term graft viability and function remain
challenging. Oxidative stress plays a
key role in the activation of alloreactive and autoreactive immunity toward the
engrafted islets. Therefore, targeting
these pathways by encapsulating islets with an antioxidant may delay
immune-mediated rejection. Utilizing a
layer-by-layer approach, we generated nanothin encapsulation materials
containing tannic acid (TA), a polyphenolic compound with redox scavenging and
anti-inflammatory effects, and poly(N-vinylpyrrolidone) (PVPON), a
biocompatible polymer. We hypothesize
that transplantation of (PVPON/TA)-encapsulated allogeneic C57BL/6 islets into
diabetic NOD mice will prolong graft function and elicit localized
immunosuppression. In the absence of
systemic immunosuppression, diabetic recipients containing
(PVPON/TA)-encapsulated islets maintained euglycemia and delayed graft rejection
significantly longer than non-encapsulated islets. Transplantation of (PVPON/TA)-encapsulated
islets was immunomodulatory as gene expression and flow cytometric analysis
revealed significantly decreased in immune
cell infiltration, synthesis of ROS, inflammatory chemokines, cytokines,
CD8 T cell effector responses, and concomitant increases in
alternatively-activated M2 macrophage and dendritic cell phenotypes. Our
results provide evidence that reducing oxidative stress following
allotransplantation of (PVPON/TA)-encapsulated islets can elicit localized
immunosuppression and potentially delay graft destruction in future human islet
transplantation studies.
Potential and challenges of additive manufacturing for topology optimized spacecraft structures
Authors: Willner Robin , Lender Stefan , Ihl Andreas , Wilsnack Christoph , Gruber Samira , Brandão Ana , Pambaguian Laurent , Riede Mirko , López Elena , Brueckner Frank , Leyens Christoph
Published: June 2020

This study focused on the potential of topology optimization (TO) for metallic tertiary structures of spacecrafts produced by the additive manufacturing (AM) technique laser powder bed fusion. First, a screening of existing conventionally manufactured products was carried out to evaluate the benefits of a redesign concerning product performance and the associated economic impact. As a result of the study, the most suitable demonstrator was selected. This reference structure was redesigned by TO taking into consideration the AM process constraints. Another major aim of this work was to evaluate the possibilities and challenges of AM (accuracies, surface quality, process parameters, postmachining, and mechanical properties) in addition to the redesign process. A comprehensive approach was implemented including detailed analysis of the powder, mechanical properties, in-process parameters, and nondestructive inspection (NDI). All measured values were used for a back loop to the design process, thereby providing a final robust redesign. Finally, the fine-tuned demonstrator was built up in an iterative process. The parts were tested under representative conditions for the application to verify the performance. The demonstrator qualification test campaign contained thermal cycling, vibration testing, static load testing, and NDI. Thus, an improvement in technology readiness level up to “near flight qualified” was reached.
Istikhdām Al-Mutalāzimāt Al-Lafdziyyah fi Al-Ta’rīb min Al-Injilīziyyah: Dirasah Maydāniyyah Washfiyyah Tahlīliyyah Liwatsāiq Taqyīm Tholabah al-Mastir fi Al-Tarjamah bi-Jāmi’ah Al-Jazāir II
Authors: BOUCHARIF Nabila , BELMEHDI Fella
Published: June 2020

Collocations usage among translation master students in the University of Algiers II seems rather irregular when it comes to the transfer of English into Arabic. This paper examines the extent and causes of this irregularity through a descriptive field study conducted among students’ assessments. It also inquires the means to consolidate translation data towards their mother tongue first, and to spontaneously and correctly make them use collocations when translating into Arabic. This paper aims at suggesting long-term solutions for undergraduate translators’ culture widening for a future style improvement. In a nutshell, it is admitted that in order to preserve Arabic from weakness and to universally spread its culture, more consideration is to be offered to translation since it is a solid channel for a daily usage of collocations. Purposefully and consequently then, many outstanding books on collocations proved efficient when read by students in a limited period of time; the assessments, full of collocations usage, showed how fruitful the books were and how they bettered the students’ style as far as collocations are concerned.
Early and Late Motherhood: Economic, Family Background and Social Conditions
Authors: Christoffersen Mogens Nygaard , Lausten Mette
Published: June 2020

The study investigates parental child rearing methods, structural factors relating to the family during adolescence geographic segregation, individual resource deficits and social background of first time late live births among 32 to 37 years old women and compare to teenagers before becoming teenage mothers. The purpose is to study if results will be consistent with the hypotheses that poverty, social deprivation during adolescence and low education are causes of teen childbearing but also childlessness among elder women in the age group 32 to 37 years old. Could childlessness as well as teenage motherhood bee seen as a consequence of social deprivation and lack of educational possibilities?A discrete-time proportional hazard Cox model is applied to analyze the longitudinal observations of population-based registers covering 1980-2003 for girls born in 1966. Results show a significant economic and social gradient for first-time teenage mothers. Teenagers who had experienced family separation or who were formerly in out-of-home care in particular had an increased risk of early childbearing. Results showed that teenage mothers were in every respect in a more disadvantaged position than pregnant teenagers who had an induced abortion.Quite the opposite pattern is disclosed for late motherhood. Late first time childbirth is more commonly seen among women with a better family background and educated position than childless women in the same age group. The late first-time pregnant women who chose abortion are in a more disadvantaged position than the women who become a mother for the first time in the age group 32 to 37 years old.Conclusion: Disadvantage during adolescence is a precursor for teenage child bearing while parental unemployment and poverty are precursors of lifetime childlessness. While social disadvantage is a precursor for first time late abortion among 32 to 37 years old women, the teenage mothers are in a more disadvantage position than teenagers who choose induced abortions. Social disadvantages inflict at the same time early motherhood and childlessness because social disadvantages influence young women differently than elder women.
The Regional Settlement Patterns of Immigrants to Sweden 1967-2005
Authors: Rauhut Daniel , Johansson Mats
Published: June 2020

The aim of this study is to analyse the initial allocation of immigrants to Sweden 1967-2005 by age in a regional perspective. Vacancies, unemployment and labour market participation as well as geographical areas with many previous immigrants are included in the analysis as pull-factors. A multivariate cross-section OLS regression model will be used to estimate the relative initial regional distribution of immigrants in Sweden in 1967, 1975, 1990 and 2005 by age. The chosen method enables to control for a subset of explanatory variables and examine the effect of a selected independent variable when estimating the regional pull-factors to immigration. This study uses data collected from Statistics Sweden (SCB) and the National Labour Market Board (AMS). The data used is regional macro data, which does not contain information on single individuals.The overall conclusion is that previous immigrants had an impact on age groups in their initial regional settlement pattern in 1967 - 2005. Few of the other independent variables show any coefficients which are statistically separated from zero.
Science High School Students' Socioeconomic Background and Their Preferences Regarding Their Transition into Higher Education
Authors: Suna Hayri Eren , Gür Bekir S. , Gelbal Selahattin , Özer Mahmut
Published: June 2020

The aim of this study is to determine the socioeconomic background of students at science high schools and to examine their preferences and placements into higher education programs on a yearly basis. The data regarding the socioeconomic background and placement into higher education programs of 103,635 students who graduated from science high schools between 2011 and 2019 were analyzed. The results show that there has been a partial decrease in the science high school graduates' placement into higher education programs in recent years. This finding seems to be related to the higher education quotas, rather than a dramatic change in the performance of graduates. Nevertheless, the total number of graduates placed into medicine and engineering programs continued to increase between 2011 and 2019. The results also show that placement ratios of graduates to their first, first five, and first ten preferences have decreased remarkably in recent years. The findings indicate that the imbalance of supply-demand in higher education adversely influences the graduates of science high schools, who are among the highest performing-students. The authors suggest a reevaluation of the current higher education quotas to allow an increased access to higher education. Further, our findings show that graduates have a distinct advantage in terms of their parental income and level of education. The authors suggest strengthening remedial education to minimize achievement differences in primary education and to improve the equality of opportunity in secondary education.
AVANCES EN LA APLICACIÓN DE POTENCIALES EFECTIVOS EN EL ESTUDIO DE NANOESTRUCTURAS SEMICONDUCTORAS A NIVEL ATOMÍSTICO
Authors: Cárdenas Jairo Ricardo
Published: June 2020

Se presentan adelantos recientes en el método de potenciales efectivos para el estudio de nanoestructuras semiconductoras a nivel atomístico. Se demuestra que el esquema de derivación de potenciales efectivos, a partir de cálculos basados en la teoría del funcional de la densidad en la aproximación de densidad local, puede ser extendido a diferentes composiciones y no se restringe a materiales con igual número de aniones y cationes. Se muestra que el método puede ser aplicado a la derivación de potenciales atómicos de impurezas. Los resultados permiten concluir, gracias a la similitud de los resultados obtenidos usando potenciales efectivos y usando formalmente la teoría del funcional de la densidad, que la nueva generación de potenciales son lo suficientemente precisos para su aplicación al estudio de nanoestructuras semiconductoras, en donde el número de átomos supera el límite de los cálculos estándar realizados usando la teoría del funcional densidad.
PARÁMETROS DE REACTIVIDAD DEL GRAFENO NEGRO VS. GRAFENO BLANCO DE DIMENSIONES DE 1,0 NM2: ESTUDIO QUÍMICO CUÁNTICO COMPUTACIONAL
Authors: Araujo Contreras Vianeis De Jesús , Castellano Olga Lucía , Sambrano Rojas Samuel Eligio , Bertel Palencia Ramón De Jesús
Published: June 2020

Se investigaron los parámetros de reactividad del grafeno extendido (grafeno negro con simetría D2h) y el nitruro de boro (h-BN) (grafeno blanco con simetría C2v), ambos con dimensiones de 1.0 nm2, usando la teoría del funcional de la densidad (DFT) combinada con la metodología HCTH/GGA/DNP. Para la estabilidad estructural se consideró el criterio de obtención de autovalores positivos de la matriz hessiana. Para obtener los parámetros de reactividad (potencial químico, dureza química, gap e índice electrofílico) se consideraron los orbitales moleculares HOMO y LUMO; además, se reportan la densidad de estados molecular (DOS) y las propiedades eléctricas y electrónicas. Los resultados indican que el grafeno blanco es mucho más estable, pero más reactivo que el grafeno negro, debido a los valores obtenidos para la dureza química (1,157 eV y 0,329 eV, respectivamente), el potencial químico (2,39 eV y 3,85 eV, respectivamente) y el gap (2,313 eV y 0,657 eV respectivamente). Los valores del índice electrofílico indican que el grafeno negro podría adsorber sobre su superficie alguna molécula prefiriendo el proceso de fisisorción (ε=0,0 eV), mientras que al grafeno blanco podría tener preferencia por la quimisorción dado que se observan valores diferentes de cero (ε=0,28 eV).
DEPÓSITO Y CARACTERIZACIÓN DE PELÍCULAS DOPADAS DE A-SI:H (TIPO N O TIPO P)
Authors: Sarmiento Chávez Ana Carolina , Moreno Moreno Mario , Torres Jacacome Alfonso , García Barrientos Abel , Plaza Casastillo Jairo
Published: June 2020

El silicio amorfo hidrogenado (a-Si:H) surge como un material prometedor en la industria fotovoltaica gracias a su alto coeficiente de absorción y a su bajo costo de producción. En este trabajo se estudiaron las propiedades ópticas y eléctricas de películas de a-Si:H dopadas tipo p y tipo n tales como: transmitancia, coeficiente de absorción, conductividad, energía de activación y espesor. Dichas películas se fabricaron mediante la técnica Depósito Químico en fase Vapor Asistido por Plasma (PECVD, por su sigla en inglés) a baja frecuencia con una temperatura de sustrato de 300 °C, variando el flujo de hidrógeno y de los gases dopantes. La caracterización de las películas se hizo mediante las técnicas de caracterización eléctrica, transmisión óptica y elipsometría UV – Visible. Los resultados muestran que el silicio amorfo hidrogenado es una buena alternativa para la fabricación de dispositivos fotovoltaicos.
Editorial
Authors: Restrepo Arango Ricardo León
Published: June 2020

La Revista EIA se complace en rendir un homenaje al Dr. Gabriel Poveda Ramos, Ingeniero Químico, Ingeniero Electricista, Matemático y Doctor en Ingeniería.