bluuebunny/crossref_metadata_2025 huggingface dataset:
SENTIMENT ANALYSIS OF COVID-19 VACCINE TWEETS
Authors:   Heriot Watt University, Dubai Campus, Singhal Jyoti , ElGayar Neamat
Published: May 2022

In the last decade, social media has emerged as the largest centralized source of opinions, expressions, blogs and micro-blogs, news, and other information. It has presented a great opportunity for the researchers, industries, and governments to understand the behavior of their customers and constituents to better align their products and services with their customers’ and citizens’ requirements. Among the social media sources, Twitter is a unique source in that data (microblogs) is unstructured and is available for free. Twitter is used widely across the globe and its microblog concept lends itself to analyze the underlying sentiment. A recent debate has been on the COVID vaccines – whether the potential benefits outweigh the side effects. Currently, there are many vaccines available with different claimed efficacy against the virus. The varying efficacies of these vaccines have attracted a public discourse. This research aims to analyze COVID-19 vaccines related tweets to better understand the pattern of public sentiments and opinions about the vaccines with respect to their side effects, potency, availability, and efficacy. The tweets are categorized and analyzed based on their polarity and subjectivity towards the vaccines. To perform the classification of tweets based on aspects, machine learning techniques such as Logistic Regression (LR), Naïve Bayes (MNB), and Support Vector Machine (SVM) along with deep learning technique Long Term Short Memory (LSTM) are used. All these classification algorithms are then compared and evaluated on the measures of precision, recall, accuracy score and F1-score. Apart from categorization and classification, topic modelling method LDA is used to extract the topics based on their similarity and frequency that can sum up the sentiment of common public towards whole process of COVID vaccine. Based on 60,000 tweets between 1-March-2021 to 31-May-2021, overall public sentiment for vaccine indicated a positive trend. Analyzing aspects of vaccines, efficacy of vaccines has turned out to be the most positive aspect which has encouraged people to advocate for vaccines. With evaluation and comparison of model’s performance, bidirectional LSTM with 92% accuracy has outperformed all the machine learning algorithms. Among all the machine learning algorithms based on different vectorization techniques, Logistic Regression achieved the highest accuracy of 73% with count vectorizer while SVM and MNB got accuracy of 64% only. Topic modeling with LDA for whole dataset with 60,000 tweets, yielded 4optimum number of topics with coherence score of 0.625. Most of the topics had common theme of availability, efficacy, and side effect.
Comunidades aprendientes, comunidades reflexivas: una estrategia para la cualificación de la práctica docente
Authors: Rodríguez Pérez María Victoria , Sánchez Rivera Sonia Liced , Alfaro Urtatiz María Elisa , Molina Penagos Martha Cecilia , Rey Caro Noira Mayerly , Paéz Yanquén Olga Lucía , Sánchez Suárez Oscar Fernando , Ndonyo Osoro Thomas
Published: May 2022

La Facultad de Educación de la Corporación Universitaria Minuto de Dios – UNIMINUTO, Sede principal, presenta a toda la comunidad universitaria los resultados del proyecto Cualificación de las prácticas docentes de la Facultad de Educación de la Corporación Universitaria Minuto de Dios – UNIMINUTO, el cual es consecuencia y continuidad del proyecto denominado Caracterización de las prácticas docentes de la Facultad de Educación de UNIMINUTO que permitió describir las particularidades de las prácticas desarrolladas por los docentes. Ambos proyectos se orientaron a generar una reflexión sobre la manera cómo los docentes desarrollan y evalúan su ejercicio para hacerlo más pertinente. Esta tentativa involucró a profesores de diferentes áreas en una perspectiva interdisciplinaria que pretendió, en principio, dar cuenta de las diversas formas de asumir la labor docente y, posteriormente, buscar los mecanismos más efectivos para su actualización, entre ellos las comunidades de aprendizaje, concepto de gran resonancia en el panorama actual de la cualificación docente.
Perspectiva de las comunidades de aprendizaje en la Educación Superior
Authors: Rodríguez Pérez María Victoria
Published: May 2022

En este capítulo se realiza un reconocimiento a las Comunidades de Aprendizaje como estrategia para fortalecer los espacios de inter-diálogo y colaboración de los docentes en la Educación Superior. La construcción del conocimiento en el siglo XXI exige que este sea derivado del trabajo colaborativo y consensuado, de aquí, la necesidad imperiosa de establecer vínculos entre los maestros que les permitan exponer experiencias significativas de formación que pueden ser replicadas. En la línea del objetivo de esta publicación, este primer apartado presenta un conjunto de planteamientos en torno a la funcionalidad y pertinencia de las Comunidades de Aprendizaje en entornos educativos situados.
Estrategias pedagógicas para docentes integrando las TIC en las dimensiones de la práctica
Authors: Páez Yanquén Olga Rocío
Published: May 2022

El presente capítulo continúa con las reflexiones suscitadas a partir del proyecto de investigación Cualificación de las prácticas docentes de la Facultad de Educación de la Corporación Universitaria Minuto de Dios – UNIMINUTO. En particular, en este capítulo se genera una reflexión sobre el modelo que integra la herramienta metodológica de competencias para docentes en Tecnologías de la Información y la Comunicación (en adelante TIC), originalmente presentada por la Unesco (2019), desde las cuatro fases del enfoque praxeológico establecidas por Juliao (2011). A partir de este modelo, y con la integración de la mirada crítica del enfoque, se ha desarrollado un nuevo modelo que busca contribuir a las dimensiones de la práctica y las competencias.
Una mirada reflexiva hacia la pedagogía de la corporeidad
Authors: Alfaro Urtatiz María Elisa
Published: May 2022

El presente escrito se inscribe en las líneas de reflexión y conceptualización que definen el presente libro. En particular, este capítulo sitúa sus consideraciones desde el ejercicio docente en el ámbito de la Educación Física y de manera especial en el análisis del cuerpo y la corporeidad en los escenarios de formación de licenciados.
El ejercicio docente como experiencia praxeológica: los encuentros en la U
Authors: Molina Penagos Martha Cecilia
Published: May 2022

El presente texto surge de la necesidad de indagar sobre las prácticas educativas y la relación con las comunidades de aprendizaje en el marco del proyecto Cualificación de las prácticas docentes de la Facultad de Educación de la Corporación Universitaria Minuto de Dios UNIMINUTO. Para alcanzar el propósito investigativo se plantea escribir un documento que permita generar una narrativa en torno a las interacciones que se dan en los escenarios educativos, particularmente en este caso, en la Licenciatura en Educación Infantil de la FEDU de UNIMINUTO, esto a partir de un análisis, a la luz de la pedagogía praxeológica.
La práctica docente: una mirada multidimensional
Authors: Ndonyo Osoro Thomas
Published: May 2022

Este capítulo propone una reflexión de las experiencias docentes surgidas del proceso de formación en inglés, lengua extranjera, en estudiantes de distintas carreras de la Corporación Universitaria Minuto de Dios – UNIMINUTO Sede Bogotá. Dichas reflexiones se enmarcan en una mirada multidimensional de la práctica docente, la cual abarca lo disciplinar, los aspectos axiológicos, la inclusión, y la evaluación cualitativa como herramienta para la educación por competencias.
Temas sensíveis em série
Authors: Lima da Silva Alexandra
Published: May 2022

O número 3 da Revista Caminhos da Educação traz a parte 2 do dossiê A dimensão educativa das séries e procura discutir a contribuição das mesmas para a compreensão de temas sensíveis a educação no mundo contemporâneo.
Expediente
Authors: Gonzaga do Monti Ednardo Monteiro
Published: May 2022

É com alegria e satisfação que anunciamos o lançamento do volume 1, número 3, da Revista Caminhos da Educação: diálogos, culturas e diversidades. A revista objetiva contemplar a diversidade regional existente no Brasil, e também, procura dialogar com a comunidade científica internacional.

Agradecemos à equipe envolvida neste projeto, bem como autoras e autores que tornaram este número possível.
A Revista O Tico-Tico e O Bello Sexo: as meninas e suas representações nas narrativas em quadrinhos do Seminário Infantil
Authors: Borges Patroclo Luciana
Published: May 2022

O artigo aborda os conteúdos publicados na revista infantil O Tico – Tico cujos propósitos eram contribuir para a formação moral e comportamental de suas leitoras. Nesse sentido foram analisadas as narrativas em quadrinhos publicadas no referido impresso cujas protagonistas eram meninas ou mulheres. O Tico – Tico trazia como parte de suas linhas editoriais o estabelecimento de conteúdos direcionados de forma específica ao sexo feminino e masculino. As histórias e seções voltadas às pequenas leitoras tinham a finalidade de reafirmar o papel social da mulher como indivíduo devotado à família e a maternidade. As histórias em quadrinhos analisadas estão inseridas no recorte temporal entre 1905 e 1925, período que abrange os vinte primeiros anos de circulação do impresso e no qual tal perspectiva de gênero pode ser evidenciada de forma mais intensa. A revista O Tico-Tico foi lançada pela editora Sociedade Anonyma O Malho em 11 de outubro de 1905. Seus fundadores foram os intelectuais Luis Bartolomeu de Souza e Silva, Manoel Bomfim, Renato de Castro e Cardoso Jr. O impresso é considerado a primeira publicação ilustrada direcionada às crianças brasileiras e tinha como inspiração, seja no formato e no conteúdo, publicações europeias. Seu projeto também encontrava consonância com as mudanças técnicas e ampliação do mercado jornalístico brasileiro. A escolha pelo público leitor infantil encontrava respaldo no fato das intelectualidades republicanas identificarem a necessidade de promover uma série de ações – sociais, educacionais e culturais – para salvaguardar uma formação condizente aos princípios republicanos da civilidade, da modernidade e do progresso.
A visão integral da pessoa no pensamento de Emmanuel Mounier e José Saramago
Authors: Minayo Maria Cecília de Souza , Da Silva Renan Antônio
Published: May 2022

Este trabalho foi realizado com o objetivo de apresentar uma visão integral da pessoa necessária para uma vivência sadia da própria objetividade/subjetividade em Emmanuel Mounier e da (ar)racionalidade em Saramago. Tais abordagens serão iniciadas pela corporeidade que mostrar o corpo como parte essencial da pessoa, ou seja, através dele ela exprime-se como tal e se expõe diante do mundo e dos outros. Porém, esta mesma pessoa está para além do corpo, da exterioridade, ela é interioridade e aí encontra a força que favorece o salto da própria realidade pessoal, isto é, favorece a dinâmica interior-exterior. Nesta dinâmica surge o grande dom da liberdade que, embora interior, se manifesta nos atos humanos. Para a elaboração da pesquisa utilizou de metodologia de cunho exploratório bibliográfico nas principais obras dos autores. Por fim, a proposta de Mounier e Saramago acerca da liberdade é algo extremamente necessário no mundo atual. Saber que a liberdade não é pura objetividade, ou seja, que devemos vivê-la em vez de vê-la, e nem pura subjetividade, isto é, o mundo não se adéqua as minhas vontades; mas é uma experiência vivida sob condições, nos coloca com os pés no chão. Somos livres à medida que fazemos os outros livres, eis o grande desafio!
A imprensa como fonte na pesquisa sobre história das mulheres
Authors: Azevedo Carla Bispo
Published: May 2022

A historiografia da Educação brasileira apresenta uma diversidade de fontes históricas, sendo a imprensa aqui, eleita como arquivo principal para análise. No presente artigo, a intenção é lançar luz sobre a imprensa como fonte na operação historiográfica em pesquisas na área de História da Educação, bem como traçar um breve panorama da história da imprensa no Brasil. Trata-se de uma pesquisa documental e bibliográfica, ancorada nos pressupostos teóricos da história das mulheres no Brasil  (SOHIET&PEDRO, 2007) e da imprensa (MARTINS & LUCA, 2013; VIEIRA,2007) na história da História da Educação . A abordagem apresentada neste trabalho permitiu a reflexão acerca das implicações pertinentes a operação historiográfica com a imprensa, bem como possibilitou a compreensão de que a imprensa traz inscrita em seus discursos elementos históricos que, proporcionam o entendimento dos debates ocorridos na sociedade, principalmente no tocante a  história das mulheres.
Análise do apoio das igrejas evangélicas à política de morte: “Eu sou Messias, mas não faço milagre”
Authors: Neves Leoardo Souza das
Published: May 2022

A pesquisa focaliza nas relações das Igrejas Evangélicas na favela Parque São Sebastião no Caju e na atual situação da política brasileira para (não) atender a pandemia mundial da COVID-19. Reflete sobre as atuações das igrejas e realiza um paralelo com os discursos do presidente Jair Bolsonaro e seus aliados durante 2020 sobre a pandemia, e como esse processo influenciaram as perceptivas e práticas dessas instituições religiosas (BURDICK; BIRMAN). A investigação foi realizada com o levantamento e análise de fontes, a partir da perspectiva de estranhamento (GINZBURG apud JÚNIOR). Em uma aproximação com a etnografia (ROCHA, ECKERT), utilizaram-se também as anotações do diário de campo e foi proposto entrevistas (BOURDIEU) e encontros com os líderes desses templos para conversar sobre as ações e falas do (des) governo atual. Os resultados aqui apresentados serão os conceitos Histórico-Cultural-Social sobre a favela (VALLADARES; MARIANO), como essas igrejas se entendem neste território (OJIMA) e quais entrelaçamentos acontecem entre religião e política nestes templos (MATA).
Pensando os arquivos eclesiásticos: a contribuição do arquivo da Prelazia de São Félix do Araguaia na preservação da memória local
Authors: Nascimento de Oliveira Pedro Henrique , Dias Gomes Veronete , Leonardi Paula
Published: May 2022

Este artigo apresenta uma compreensão a respeito de Arquivo Eclesiástico tomando como objeto e fonte a organização arquivística da Prelazia de São Félix do Araguaia – MT. A pesquisa compõe o projeto “Ressonâncias de vozes de Bispos: o Araguaia/Xingu de Casaldáliga”, em andamento junto ao Programa de Pós-graduação em Educação da Universidade do Estado do Rio de Janeiro – UERJ. O referencial teórico/metodológico visa a abordagem qualitativa e dialoga com as ideias dos historiadores Jacques Le Goff (2013), Paul Ricouer (2007) e com o pensamento de Michel Foucault (2000) para, na perspectiva dos estudos genealógicos e a partir da emergência dos acontecimentos, dar a conhecer as potencialidades na construção de saberes. Esta narrativa também é resultado de atividades da disciplina Estudos Avançados em História da Educação II, que contribuiu na nossa formação sobre o tema dos arquivos. Concluímos que o arquivo eclesiástico, como território de produção de sentido e problematização da vida, constitui-se como um dispositivo que preserva, organiza e disponibiliza um conjunto de memórias, composto por escritos, iconografias e materiais áudio visuais, com informações disponíveis a respeito de autoridades e grupos socioculturais, ligados ou não ao clero, permitindo diversas construções teóricas.
Editorial
Authors: Monti Ednardo Monteiro Gonzaga do
Published: May 2022

A Revista Caminhos da Educação: diálogos, culturas e diversidades termina o ano de 2021 com a publicação do terceiro número, segue com sua política editorial de promover diálogos entre os diferentes campos da área de educação, privilegia epistemologias, perspectivas e abordagens teóricas que contemplem a diversidade nas formas de ser, existir e pensar. Portanto, não poderia ser diferente, neste momento de pandemia apoia o movimento de vacinação contra o vírus da COVID 19, isso na perspectiva de defesa da vida e da dignidade humana.

 

Com a intencionalidade de ampliar o desenvolvimento, a compreensão, a análise e interpretação da educação brasileira, desde os tempos coloniais até o século XXI, utiliza os conhecimentos históricos para construir uma visão crítica da atual conjuntura. Sendo assim, neste número é publicada a 2ª parte do dossiê Arquivos e História da Educação, organizado pelas professoras Alexandra Lima da Silva e Maria Celi Chaves Vasconcelos, pesquisadoras e professoras do campo da História da Educação.

 

Os autores dos quatro artigos que constituem o dossiê são oriundos de diferentes instituições de ensino, foram alunos da disciplina Estudos Avançados em História da Educação II, ministrada no primeiro semestre de 2021, no Programa de Pós-Graduação em Educação da Universidade do Estado do Rio de Janeiro.

 

Na demanda de Fluxo Contínuo, neste número são publicados 4 artigos que abordam diferentes temáticas que estabelecem conexão com o foco e escopo deste periódico acadêmico. Nessa perspectiva, estimula o debate acadêmico e incentiva reflexões, promove discussões de saberes, politicas, experiências, culturas e diversidades.

 

Apraz-nos agradecer reiteradamente a Coordenação do Programa de Pós-graduação em Educação - PPGED e a Superintendência de Tecnologia da Informação -STI, ambas da Universidade Federal do Piauí – UFPI, pelo apoio no processo de atualização e transição do Open Journal Systems (OJS) para melhor funcionamento da Revista Caminhos da Educação: diálogos, culturas e diversidades.

 

Nosso desejo é que este número sensibilize os leitores para os valores educativos, humanos e sociais neste final de ano. Enfim, parabenizamos aos autores! Agradecemos aos avaliadores colaboradores da Caminhos da Educação! Desejamos a todos uma ótima leitura!

 

Ednardo Monteiro Gonzaga do Monti

Editor
Práticas de avaliação de desempenho nas transações com fornecedores: um enfoque sob a perspectiva da Teoria dos Custos de Transação
Authors:   Universidade Federal da Paraíba, Sá Alex Oliveira Paiva Dias de , Almeida Karla Katiuscia Nóbrega de ,   Universidade Federal da Parabaíba
Published: May 2022

Sob a lente da Teoria dos Custos de Transação, objetivou-se analisar a relação entre as práticas de avaliação de desempenho declaradas pelas sociedades anônimas de consumo cíclico com as características das transações com fornecedores dos seus principais insumos. Para tanto, realizou-se uma pesquisa -descritiva, com abordagem qualitativa, por meio da análise documental, tendo como base os Formulários de Referência de 83 empresas do setor de consumo cíclico da B3, referentes ao ano de 2019. Os dados coletados permitiram caracterizar as transações das empresas da amostra com os fornecedores dos seus principais insumos, predominantemente, como sendo de baixa incerteza e insumos padronizados, embora se identificou a divulgação de informações que permitiram entender a alta e média especificidade de ativos humanos e física presentes em 11 das 83 empresas da amostra. O cotejo entre essas características e as práticas de avaliação de desempenho divulgadas por essas empresas permitiu constatar que na presença de especificidade de ativos (nível alto e médio), a qualidade do produto foi a única prática divulgada em comum, enquanto as empresas com insumos padronizados informam utilização de variadas práticas. Conclui-se que, à medida que o nível de especificidade dos insumos comprados pelas sociedades anônimas de consumo cíclico diminui, as práticas de avaliação de desempenho se tornam mais variadas e ecléticas entre financeiras e não financeiras, embora prevaleçam as últimas.
Evaluating Pairwise Variable Selection Methods
Authors: Reschenhofer Erhard
Published: May 2022

This paper discusses novel methods for the pairwise selection of explanatory variables from a large set of candidate pairs. These methods are applied to monthly time series of surface temperature and their performance is compared with that of conventional selection criteria such as AIC and BIC. In our frequency-domain analysis of the temperature datasets, the pairs are defined in a natural way as cosine and sine vectors of the same frequency. The results show that the new criteria are the only ones which are able to correctly identify seasonal patterns.
ANALYSIS OF THE IMPACT OF PUBLIC RELATIONS STRATEGIES ON CUSTOMER-BASED BRAND EQUITY: A STUDY OF NIKE CUSTOMERS IN THE UK
Authors: Neupane Ramesh
Published: May 2022

This research aims to evaluate the impacts of Nike’s public relations strategies on customer-based brand equity by analysing the perceptions of Nike customers in the UK. It has also evaluated the effectiveness of Nike’s PR strategies and its customer-based brand equity based on customers' perceptions through rating on a five-point Likert scale. This study has used the proposition of positivism philosophy and deductive reasoning. This means seven hypotheses were developed based on literature and theories associated with public relations and customer-based brand equity. Primary data from the customers of Nike were collected to test those hypotheses. The strategy of a survey through an online questionnaire tool has been implemented to collect data from Nike customers in the UK. A sample of 151 customers was chosen based on the convenience sampling technique. The data analysis followed statistical and mathematical techniques, including frequencies, charts, percentage analysis, standards deviation, arithmetic mean, correlation, and regression. This study identified that PR strategies have significant positive impacts on customer-based brand equity. This means all the seven PR strategies considered in this study have significant positive impacts on CBBE. The correlation and regression between PR strategies and CBBE indicated that the PR strategies of Nike and customer-based brand equity are intercorrelated with each other and overall PR strategies have significant positive impacts on CBBE with β = 0.817 and p = 0.000. PR strategies implemented by Nike are significantly effective based on customers’ perceptions in the UK. Nike is significantly managing its customer-based brand equity based on customers' perceptions in the UK.
Threat object detection and analysis for explosive ordnance disposal robot
Authors: Reagan Leoncio Galvez  , Elmer Pamisa Dadios
Published: May 2022

Explosive Ordnance Disposal (EOD) robots are useful in military applications like the safe disposal of explosives. However, many of these robots do not have the capability to identify threat objects using their onboard vision system due to data unavailability for training an improvised explosive device (IED) detector. As a solution, this study used image processing and object detection algorithms to detect and analyze threat objects inside the baggage. A threat object detector was developed and composed of two separate modules such as baggage detection and IED detection and analysis modules. The experiments showed that baggage detection achieved 22.82% mean average precision (mAP) using Single Shot Detector (SSD) in the Microsoft Common Objects in Context (COCO) dataset, while IED detection achieved 77.59% mAP using Faster R-CNN in the X-ray dataset. The threat objects from the X-ray image were also analyzed using image processing techniques to get the dimension of the object and the distance from a reference object. Also, the baggage detection module was successfully deployed in Jetson TX2, which runs at a frame rate of 12 frames per second (FPS).
Comparative assessment of the co-production of bioethanol and single cell proteins from Sugarcane Bagasse, Rice Husks, and cassava peels using Saccharomyces cerevisiae
Authors: Otoikhian SK  , Amune OU
Published: May 2022

This work compares various waste sources of feedstock (cassava peels, sugarcane bagasse, and rice husks) for the co-production of bioethanol and single cell protein using Saccharomyces Cerevisiae as fermentation enzyme. Sulphuric acid solution was used for the pre-treatment, dilute hydrochloric acid was used for hydrolysis, temperature, time, and pH of 131.8 °C, 1 hr, and 5.3 respectively. Sodium hydroxide (NaOH) was used to adjust the pH of the hydrolysate to neutral (6.7). The primary component of the single-cell protein was ammonia (NH3), which was quantified using Kjeldahl's technique of analysis, while the bioethanol produced was assessed using the colorimetric and colored reaction method using a spectrophotometer. Sugarcane bagasse showed the highest amount of bioethanol (36.57 %) while Rice husks and Cassava peels showed 30.97 % and 29.31 % respectively. The greatest bioethanol production (47.85 %) was achieved by combining feedstock, cassava, and sugar cane feedstocks. The percentage of single cell protein generated from individual feedstock was the highest using sugarcane bagasse (29.4 %) while a sugarcane bagasse and cassava peels combination gave the highest concentration for single cell protein (43.6 %). The study has demonstrated efficient bioethanol and single cell protein (SCP) co-production from Saccharomyces Cerevisiae using sugarcane bagasse, cassava peels, and rice husk as feedstock.
Yield variation and aphid scoring of different cowpea (Vigna unguiculata) genotypes across the environment
Authors: Tessema Tesfaye Atumo  , Worku Bedeke Baredo
Published: May 2022

Producing improved legume forages may contribute to the improvement of the quality supply of the livestock feeding system in Ethiopia. Dry matter and seed yield evaluation and aphid infestation scoring of cowpea genotypes were undertaken for three production seasons (2018-2019). The treatment of five cowpea accessions (ILRI_9333, ILRI_9334, ILRI_11114, ILRI_12668, and ILRI_12713) and one recently released variety as a standard check (Temesgen) at three locations (Arba Minch Agricultural Research Center (AMARC), Bonga Agricultural Research Center (BARC) and Hawassa Agricultural Research Center (HARC) was laid out at the field in a randomized complete block design with three replications. Growth, yield, and aphid scoring parameters were collected to present the comparison of genotypes. Vine length and branch number of ILRI_3334 followed by ILRI_12173 was significantly taller in all locations than the standard check and other genotypes in the test. Dry matter yield production was significantly (P<0.05) higher for ILRI_12713 (8.87 t/ha) followed by ILRI_9334 (8.44 t/ha) and ILRI_11114 (8.4 t/ha) while in seed yield variety ILRI_11114>ILRI_12668>ILRI_12713 than Temegen and others in the experiment. Aphid infestation in the cowpea field significantly influenced dry matter yield and seed yield. Dry matter yield was positively correlated with branch number and vine length. Seed yield was positively and significantly (P= 0.047 and 0.015) correlated with seed per pod and harvest index. Hence, ILRI_12713, ILRI_9334, and ILRI_11114 are to be considered for further cowpea breeding programs for dry matter and seed yield under aphid-infested conditions. Quality of the materials under irrigated and other agronomic conditions might be the future assignment.
Evaluation of the acute effect of heavy metals exposure on lipid profile of albino wistar rats
Authors: Nnamso Effiong Essien  , Ukeme Andrew Essien  , Promise Godsfavour Mfon Bobson  , Etiowo George Ukpong  , Okon Effiong Okon
Published: May 2022

Acute effect of heavy metals exposure on lipid profile of male albino wistar rats was evaluated. Sixteen (16) animals weighing 292-298g were randomly assigned four groups of four rats each. Groups 1 and 2 were orally treated ones with 40 percent below the lethal doses (LD50) of Lead and Mercury respectively. Group 3 was treated with both heavy metals (20 percent below the LD50 each of the metals). Group 4 was not treated with either of the heavy metals and served as control. Each group of animals was allow free access to commercial rat mash and water for one week that the study lasted. After the 7 days experimentation, the results revealed a non-significant increase (P > 0.05) in serum total cholesterol (TC), triglyceride (TG), high-density lipoprotein (HDL) cholesterol and very low-density lipoprotein (VLDL) cholesterol in group 1 when compared to the control. A significant decrease in serum low-density lipoprotein (LDL) cholesterol (P < 0.05) in group 1 was recorded when compared to the control. Groups 2 and 3 animals died 24 hours and 48 hours respectively after treatment. The implications of these results are discussed.
A review on corona virus disease (COVID-19) and prevention
Authors: Pooja Duhan  , Rimpy Dahiya  , Subhani Jarora  , Ritu Kataria
Published: May 2022

COVID-19 is related to the family Coronaviridae which is a kind of corona virus sickness. It beliefs that probably it comes from bats and was extends to people through an unidentified medium in Wuhan, China. The situation was spread by inhaling the infected droplets which is present in environment that has an incubation period between two and fourteen days. Fever, cough, sneezing, sore throat, complication in tiredness and breathing are the most common indications for the disease. Preventive measures include the sanitation of hands, isolation of the infected persons, proper aeration. This review discusses mechanism of spread of disease and preventive vaccines of Coronavirus.
Schizophrenia and filicide: Reflection about a clinical case and literature review
Authors: Aabbassi B
Published: May 2022

Filicide, a highly traumatic act, requires very specific meanings. In the international literature a large proportion of cases are correlated with maternal mental pathology. The case we report describes a tragic filicide by a mother with no psychiatric history. This acting out reveals schizophrenia. Thus, the main objective of our work is to emphasize the need for the diagnosis and early management of psychiatric illness, in particular in pregnant women in order to provide violence oneself or to others and to raise the problem of social prevention for these patients and their children and families.
Structure and properties of industrial semi-products of weldable corrosion-resistant Al – Mg – Si – Cu system aluminum alloy
Authors:   FSUE “All-Russian Scientific-Research Institute of Aviation Materials” State Scientific Center of the Russian Federation, Antipov K. V. , Benarieb I. ,   FSUE “All-Russian Scientific-Research Institute of Aviation Materials” State Scientific Center of the Russian Federation, Oglodkova Y. S. ,   FSUE “All-Russian Scientific-Research Institute of Aviation Materials” State Scientific Center of the Russian Federation, Rudchenko A. S. ,   FSUE “All-Russian Scientific-Research Institute of Aviation Materials” State Scientific Center of the Russian Federation
Published: May 2022

The results of comprehensive studies of a set of properties of experimental-industrial sheets and extruded profiles made of a new aluminum alloy V-1381 Al – Mg – Si – Cu systems (6xxxx series) are presented in the article. The alloy has shown high manufacturability in industrial production under extrusion, as well as in hot and cold rolling. Using the Thermo-Calc software package, the quenching mode of semi-finished products was selected, as well as the modes of artificial aging modes were investigated. It is shown that the alloy V-1381T1 is not inferior in its mechanical properties to the foreign analogue alloy AA6013, is characterized by a good combination of mechanical properties at room temperature (σu ≥ 380 MPa, σ0.2 ≥ 360 MPa, δ5 ≥ 13  %) and elevated temperatures, exceeds the widely used alloy D16chT in yield strength by 20%, while possessing a lower density, better corrosion resistance and ability to obtain welded joints. The new alloy V-1381 can be recommended for use in fuselage structural elements of aviation equipment, including replacing less corrosion-resistant non-welded alloys of the D16 type, which will increase the weight efficiency of the structure both due to increased strength and due to the replacement of riveted joints withwelded ones.
Study of electrochemical, electrical properties and temperature dependences of azomethine-Zn (II) ligand complexes based on pyrazolone
Authors:   V.I. Vernadsky Crimean Federal University, Tyutyunik A. S. , Gurchenko V. S. ,   V.I. Vernadsky Crimean Federal University, Mazinov A. S. ,   V.I. Vernadsky Crimean Federal University
Published: May 2022

Comprehensive study of the electrochemical, electrical properties and temperature dependences of the Zn (II) hybrid organic complex based on Schiff (C48H42N6O2Zn) is carried out. In order to determine the prospects for using this compound as a semiconductor material, thin films were obtained using the centrifugation method. The method of preparation, synthesis, microscopy of the surface, as well as the method of measuring the temperature dependences of the electrical properties of the obtained thin films are described. The temperature measurement range ranged from 270 to 330 K. The energy levels of the lowest unoccupied molecular orbital and the highest occupied molecular orbital were determined using cyclic voltammetry. The activation energy calculated from linear approximations of the current-voltage characteristics in Arrhenius coordinates was 0.65 eV. Analysis of the current-voltage characteristics of the ITO – PBAL – Al structure showed that they correspond to the typical characteristics of Schottky diodes with a charge mobility of ~ 1,18·10–11 cm2·V–1·s–1.To study the mechanisms of charge transfer, the C – V characteristics of the samples were investigated at a frequency of 1 kHz. The concentration of charge carriers was calculated using the Mott – Schottky relationship.
Research of titanium powder obtained by SHS–hydrogenation and dehydrogenation in a vacuum furnace
Authors:   Merzhanov Institute of Structural Macrokinetics and Materials Science Russian Academy of Sciences, Cherezov N. P. , Alymov M. I. ,   Merzhanov Institute of Structural Macrokinetics and Materials Science Russian Academy of Sciences, Zakorzhevsky V. V. ,   Merzhanov Institute of Structural Macrokinetics and Materials Science Russian Academy of Sciences
Published: May 2022

The method of SHS (self-propagating high-temperature synthesis) allows the efficient synthesis of titanium hydride. The article presents new results of experimental studies of titanium powders synthesized by the method of SHS hydrogenation and dehydrogenation in a vacuum furnace. Changes in the microstructure, phase and chemical composition during hydrogenation-dehydrogenation of a titanium sponge were studied. The titanium sponge was hydrogenated in a high-pressure SHS reactor at a hydrogen pressure of 3 MPa. The content of oxygen and carbon impurities decrease in the process of SHS hydrogenation was found. After hydrogenation, the sponge is a single-phase δ-hydride of titanium with a tetragonal lattice, the particles have a fragmentary shape. In the obtained titanium hydride, an increased hydrogen content of 4.64 wt. % was noted. The hydrogenated titanium sponge was mechanically crushed in a drum-ball mill to a particle size of 40 – 250 microns. Dehydrogenation of titanium hydride powder was carried out in a vacuum furnace at a temperature of 850 °C for 220 minutes. Titanium after dehydrogenation is a single-phase α-titanium powder with a hexagonal close packed lattice, the size and shape of the particles have not changed. The technological process under study provides the possibility of obtaining high-quality titanium powders of the necessary granulometric composition for various fields of powder metallurgy.
Low-temperature synthesis of barium titanate in the mesoporous polyethylene matrices
Authors:   Department of Chemistry, M.V. Lomonosov Moscow State University, Trofimchuk E. S. , Moskvina M. A. ,   Department of Chemistry, M.V. Lomonosov Moscow State University, Shevchenko V. G. ,   Department of Chemistry, M.V. Lomonosov Moscow State University, Nikonorova N. I. ,   Department of Chemistry, M.V. Lomonosov Moscow State University
Published: May 2022

A nanocomposite based on high-density polyethylene with barium titanate (content of 13 – 15 wt. %) was obtained as a result of low-temperature synthesis of the inorganic component directly in the mesopores of an oriented polymer matrix using the sol-gel method followed by hydrothermal treatment in an alkaline medium. Crystallization of barium titanate in nanopores is detected by X-ray phase analysis and electron microscopy to occur mainly in a cubic crystalline modification with an average crystallite size of 16 nm and to form chain structures. A comparative assessment of the dielectric properties of a polymer nanocomposite and powder barium titanate synthesized under similar conditions is carried out.
Elastomer materials for application in equipment of subsea production systems
Authors:   Gazprom 335 Ltd, Korobchuk M. V.
Published: May 2022

The development of systems for subsea production of hydrocarbon resources for Russia is a new direction. The article describes the elastomeric materials used for the manufacture of seals for movable and fixed joints. It was noted that at present there are no domestic standards governing the requirements for elastomeric materials used in mining equipment. Based on the analysis of foreign experience, information is provided on rubbers that are most widely used in the design of subsea production systems. For basic rubbers, their main properties are considered. For rubber compounds that have become widespread and have proven their efficiency in practice, some characteristics are given. Based on the information presented in the review, a conclusion is made about the need to develop formulations of domestic elastomeric compositions.
Creation of the composite material based on titanium dioxide with high photocatalytic characteristics by oxidative construction approach
Authors:   Baikov Institute of Metallurgy and Materials Science RAS, Kovalev I. A. , Sadovnikov A. A. ,   Kurnakov Institute of General and Inorganic Chemistry RAS, Shevtsov S. V. ,   Baikov Institute of Metallurgy and Materials Science RAS, Ovsyannikov N. A. ,   Baikov Institute of Metallurgy and Materials Science RAS, Strelnikova S. S. ,   Baikov Institute of Metallurgy and Materials Science RAS, Chernyavskii A. S. ,   Baikov Institute of Metallurgy and Materials Science RAS, Solntsev K. A. ,   Baikov Institute of Metallurgy and Materials Science RAS
Published: May 2022

A composite material with photocatalytically active properties was obtained by electrophoretic deposition (EF) of highly dispersed anatase on the surface of the carrier. The carrier was a titanium/rutile cermet plate obtained after 2 hours of oxidation at 875 °C. using the oxidative construction approach. During this time, a layer of rutile 15 – 20 μm formed on the titanium plate, which has good adhesion to the surface of the metal core. The breakdown voltage for this sample was ∼ 150 V. To make the photocatalyst film homogeneous and compact, it was carried out by 3 cycles of electrophoretic deposition and heat treatment at 395 °C. The photocatalytic activity of the obtained samples was studied using the example of the reaction of catalytic decomposition of ozone under the action of ultraviolet radiation.
ASSESSMENT OF SPRING TRITICALE ADAPTIVE FEATURES IN KHABAROVSK REGION
Authors: Zenkina K. V. , Aseeva T. А.
Published: May 2022

The article evaluates the adaptive properties of collection samples of spring triticale in terms of grain yield. The studies were carried out in 2015-2021 on the experimental fields of the Far Eastern Research Institute of Agriculture (Khabarovsk region). The object of research is 21 collection samples of spring triticale. On average, over the years of research, varieties with the maximum grain yield AC Certa (3592), Lana (3630), Uzor (3888), Zolotoy grebeshok (3677) were noted – 36.0-36.6 c/ha. As a result of the research, promising samples were identified in terms of adaptability parameters: adaptability coefficient (KA˃1.00) – AC Certa (3592), Lana (3630), Dagvo (3645), Zolotoy grebeshok (3677), Uliana (3887), Uzor (3888 ), Lotos (3889), Mykola (3890), Kаrаvai kharkоvsky (3892), Yarilo (3895); plasticity index (IP˃1.10) – AC Certa (3592), Lana (3630), Zolotoy grebeshok (3677); stability index (IS˃3.00) – Victoria (3922); intensity index (II˃2.00) - Yarilo (3895); genotypic effect (Ei˃5) – AC Certa (3592), Lana (3630), Zolotoy grebeshok (3677), Uzor (3888); homeostaticity (Hom˃4) – Victoria (3922), Zgurivsky (3960); breeding value (Sc˃10) – Victoria (3922), Zgurivsky (3960), Sandio (3988). Triticale genotypes are divided into 2 groups: varieties of intensive type - Ukro (3644), Scoriy (3676), Pamyat Merezhko (3916), ZG 186 (3907), Rovnya (3935), Oberig kharkovsky (3961), Victoria (3922), Sandio (3988), Kobzar (3958), Tleridal (3986), Losinovske (3959), Zgurivsky (3960); and extensive type – AC Certa (3644), Uzor (3888), Lana (3630), Zolotoy grebeshok (3677), Dagvo (3645), Mykola (3890), Yarilo (3895), Kаrаvai kharkоvsky (3892), Ulyana (3887 ), Lotos (3889).
A NANOPREPARATIONS EFFECT ON SPRING WHEAT PRODUCTIVITIES UNDER THE CONDITIONS OF THE WATER-AIR REGIME REGULATION OF SODDY-PODZOLIC SOIL
Authors: Zinkovskaya T. S. , Rabinovich G. Yu. , Antsiferova O. N.
Published: May 2022

The effect of nanopreparations on the productivity of spring wheat under different water regimes of drained gleyic light loamy soddy-podzolic soil was studied. The use of new generation biological agents to increase the productivity of cultivated crops, prevent degradation processes, preserve and expand the reproduction of soil fertility made it possible to determine their effect on the yield and quality of spring wheat with bilateral regulation of the water-air regime of the soil. The use of humic preparations with nanoparticles BoGum-N and fulvohumate "Ivan Ovsinsky" both separately and against the background of a high-tech fertilizer developed by VNIIMZ - multi-purpose compost (KMN), contributed to an increase in yield. During a three-year experiment (2019-2021), a mathematically proven yield increase was obtained in variants with nanopreparations relative to the control. On average, over three years, the yield of spring wheat on non-irrigated variants with nanopreparations BoGum-N and fulvohumate "Ivan Ovsinsky" was 24.1 and 23.9 c/ha, in the control - 20.1 c/ha. Under irrigation with nanopreparations and in the control variant, the yield was 28.2 c/ha, 27.8 c/ha and 23.2 c/ha, respectively. The highest productivity of wheat over the years of research was provided by irrigation options with nanopreparations against the background of KMN.   This had a positive effect on enhancing the effect of the tested drugs. On irrigated variants, on average over three years, the increase in yield with foliar treatment with nanopreparations was 18-20% in relation to the KMN. During the experiment, almost the same effect of the studied nanopreparations on the productivity of spring wheat was revealed. Under the conditions of bilateral regulation of the water regime of the soil, the influence of biological agents on the quality of wheat was assessed. Variants with nanopreparations against the background of KMN were distinguished by increased protein content, both watering and without it. When drained, the protein content in wheat grain averaged 12.2%, in variants with irrigation - 11.8%.
Evaluasi Program Home Care Taman Penitipan Anak (TPA) Selama Masa Pandemi Covid-19
Authors: Rahmawati Desi , Sugito Sugito
Published: May 2022

Home care merupakan sebuah layanan pengasuhan yang disediakan oleh An Nahl Daycare  sebagai pengganti layanan daycare secara langsung. Evaluasi program kegiatan ini diselenggarakan atas dasar perlunya identifikasi dalam perencanaan program untuk mengetahui bagaimana pelaksanaan program home care yang akan dilakukan. Metode yang digunakan dalam penelitian ini adalah evaluasi model CIPP (Context, Input, Process, Product) dengan subjek penelitian guru dan pengasuh. Evaluasi ini bertujuan untuk mengetahui keterlaksanaan progam home care di An Nahl Daycare Yogyakarta.  Hasil penelitian menemukan bahwa 1) Perencanaan dan pengambilan keputusan dalam program telah melibatkan seluruh partisipan program yaitu kepala lembaga, guru, dan pengasuh, 2) Sarana dan prasarana seperti metode, media, instruktur, serta kurikulum yang digunakan dapat mendukung proses pelaksanaan program, 3) Pelaksanaan program dilakukan dengan dukungan sarana dan prasarana yang telah disiapkan sebelumnya, 4) Evaluasi pelaksanaan program cukup baik terkait dengan adaptasi nilai, keterampilan dan pengetahuan yang diberikan.
Increase Students’ Self-Confidence and Reduce Anxiety During Covid-19: Is Coping Strategy Becomes the Solution?
Authors: Arifin Bustanol , Saputra Setiya Yunus , Muzakki Abdurrohman , Setiawan Edi , Jumareng Hasanuddin
Published: May 2022

Penelitian ini bertujuan untuk mengetahui efek strategi coping terhadap peningkatan rasa percaya diri dan penurunan kecemasan. Penelitian ini mengadopsi metode campuran. Tujuh puluh siswa diambil dari sekolah dasar. Penelitian ini menggunakan kuesioner sebagai instrumen kuantitatif untuk mengukur kepercayaan diri dan kecemasan serta wawancara melalui Zoom Meetings sebagai instrumen kualitatif. Analisis data kuantitatif menggunakan IBM SPSS untuk mencari statistik deskriptif, normalitas dan paired sample t-test berfungsi untuk mengetahui perbedaan nilai kepercayaan diri dan kecemasan sebelum dan sesudah intervensi dan analisis data kualitatif melalui pengurutan data berdasarkan kategorisasi berdasarkan kesamaan dan kumpulan frasa serupa dikelompokkan. Hasil penelitian kuantitatif menunjukkan bahwa strategi coping efektif dapat meningkatkan rasa percaya diri dan mengurangi kecemasan. Sedangkan hasil kualitatif menunjukkan bahwa sebagian besar siswa menyatakan rasa percaya diri meningkat dan kecemasan menurun drastis. Penelitian ini menjadi bukti empiris bahwa strategi coping berdampak besar untuk meningkatkan rasa percaya diri, serta menurunkan tingkat kecemasan siswa.
Critiquing Racial Literacy: Presenting a Continuum of Racial Literacies
Authors: Chávez-Moreno Laura C.
Published: May 2022

Racial literacy has contributed powerful advances in multiple disciplines about how race and racism are understood. Many education scholars use the concept to refer to antiracist practices and ideologies, a definition that casts some people as either racially literate or illiterate. In this essay the author draws on examples from education literature to argue that this interdisciplinary conceptual norm hinders scholars’ attempts to reveal the dominance of race-evasiveness, however unintentionally, for two reasons. First, describing people as racially literate or illiterate implies that those who adopt race-evasive or racist ideologies are not interpreting racial ideas, which overlooks that all people who live in a racist society engage in literacy practices that make meaning of race. Second, construing racial literacy strictly as antiracist obscures that making meaning of race can be done through hegemonic ideologies. This accepted conceptualization may stymie useful analyses of hegemonic ideologies that predominate in U.S. society and schools. The author presents a continuum of racial literacies to differentiate between hegemonic and counterhegemonic racial literacies. The continuum’s exposure of hegemonic racial literacies encourages scholars to capture the hidden ideologies in literacy practices that may not exhibit an explicit racial focus but nevertheless perpetuate racism. Furthermore, the author suggests eschewing the labels “racially illiterate” and “racially literate” and instead affirms that people become racially literate through both racist and antiracist literacy practices. Instead of racially illiterate or literate, the author submits consciousness as a more apt term and connects the continuum’s counterhegemonic end to developing critical-racial consciousness, an antiracist lens.