bluuebunny/crossref_metadata_2025 huggingface dataset:
Avaliação do processo licitatório de um pórtico turístico na cidade de Quixadá/CE
Authors: Santos Anny Caroline Nobre , Bezerra Macgyver Viana , Lima Marina Brito de
Published: December 2023

A licitação pública, tendo como objetivos fundamentais a busca da melhor proposta para a Administração Pública e a manutenção dos princípios da isonomia entre os interessados, caracteriza-se como um processo indispensável para a administração, na esfera municipal, estadual e federal. Sendo assim, salienta-se que são recorrentes irregularidades e falhas durante o processo licitatório, ocasionando a má execução de obras públicas e prejuízos socioeconômicos. Logo, este artigo vem apresentar o procedimento licitatório de uma obra municipal, em Quixadá/CE, referente à construção de um pórtico turístico na entrada da cidade. Para os devidos fins, designa-se como um estudo de caso, cuja metodologia é de natureza exploratória e abordagem quali-quantitativa, pois foi realizada uma investigação em todo o seu Edital de Licitação, Termos Aditivos, contrato, orçamento físico-financeiro firmado entre as partes, levantamento bibliográfico sobre os fatores que afetam os prazos de empreendimentos de construção, como também a identificação das principais falhas que se enquadravam na análise acadêmica proposta. Por fim, procedeu-se a classificação, conforme a literatura, das possíveis causas que estariam acontecendo na execução do pórtico. Assim, a importância desse estudo visa alertar os fatores recorrentes à ineficácia do procedimento licitatório e à execução dos serviços de obras públicas.
Análise da variação dos preços de materiais da construção durante a pandemia de COVID-19
Authors: Almeida André Luiz Silva , Serra Sheyla Mara Baptista
Published: December 2023

A pandemia da COVID-19 teve grandes impactos na economia e afetou de maneira brusca a indústria da construção civil brasileira, em especial o subsetor de comércio de materiais. Esse subsetor teve variação considerável no preço de comercialização dos seus produtos. Para avaliação foram selecionados quatro materiais de construção constantes dos lotes básicos de materiais da norma técnica de orçamento, a saber: vergalhão de aço Ø10mm, cimento CP-32 II, fio de cobre antichama, isolamento 750V, #2,5 mm² e brita 2. Na análise comparativa no trabalho foram realizadas pesquisas de preços em dois diferentes mercados e coletados os dados disponíveis nas tabelas do Sistema Nacional de Pesquisa de Custos e Índices da Construção Civil (SINAPI) e do Sindicato da Indústria da Construção Civil (SINDUSCON) nos estados de Minas Gerais e de São Paulo. Os resultados demonstraram uma grande variação mensal nos preços dos itens analisados em ambos os estados durante os vinte meses observados de janeiro de 2020 a setembro de 2021, não se verificando correlação na comparação entre as diferentes fontes de dados.
Uso de jogo em LEGO™ como ferramenta de ensino de gestão de obras
Authors: Nunes Amélia Gomes , Souza Luana de Jesus , Teodósio Pamella Menezes , Torres Taiane Aparecida Santos , Santos Débora de Gois
Published: December 2023

O uso de jogos como abordagem prática na área de gestão tem se mostrado uma ferramenta eficiente para a aprendizagem na construção, especialmente quando baseados na abordagem enxuta, pois tais jogos visam disseminar a mentalidade de eliminação de perdas. Sendo assim, diante do desafio de fornecer uma formação prática para alunos de mestrado, analisar a consolidação das habilidades em antecipações gerenciais e na redução da variabilidade no fluxo, ao aplicar um jogo em Lego™ para ensino da gestão da construção. Para tal fim, foram empregadas duas metodologias de pesquisa: um mapeamento sistemático da literatura, a fim de verificar a perspectiva de trabalhos futuros; bem como a aplicação de um jogo com posterior verificação dos conceitos fixados. Por conseguinte, foi constatado uma perspectiva de crescimento na área de pesquisa de jogos de simulação para ensino, com um pico de publicações no ano de 2021, possivelmente devido ao surgimento da comunidade Administering and Playing Lean Simulations Online (APLSO), no referido ano. Enquanto na aplicação do jogo, os estudantes demonstraram preocupação com tempo, orçamento e qualidade, o que permitiu compreender os processos e refletir sobre pontos de melhoria. Essas verificações confirmaram o potencial do jogo como ferramenta de ensino de gestão da construção.
Modelagem baseada em agentes para a gestão da segurança no canteiro de obras
Authors: Pacheco Vanessa Cruz , Bonfim Guilherme dos Santos , Barros Junior Marcio Costa , Alberte Elaine Pinto Varela , Costa Dayana Bastos
Published: December 2023

Os canteiros de obra são ambientes complexos e dinâmicos, compostos por uma variedade de elementos envolvidos na etapa produtiva da construção (materiais, equipamentos e operários). Além disso, o setor da construção é um dos segmentos que mais registram acidentes de trabalho no Brasil. A gestão da segurança é uma atividade fundamental no canteiro de obras, pois identifica, controla e avalia os perigos no ambiente de trabalho. Dentro desse contexto, observa-se a necessidade de estudos que desenvolvam ferramentas para apoio à gestão da segurança na construção. A modelagem baseada em agentes destaca-se como uma metodologia computacional que pode apoiar a gestão da segurança na construção a partir de uma abordagem bottom-up, abordagem esta que analisa os aspectos a partir da base da produção (colaboradores) para o topo (gerência). Este artigo apresenta uma revisão sistemática da literatura sobre o uso desta metodologia para análise da segurança em canteiros. Como resultado, foi possível traçar um panorama atual sobre o uso de modelagem baseada em agentes para análise da segurança em canteiros de obras e identificar as tendências e lacunas referentes ao design dos modelos (tipo de modelo, resolução espacial e temporal, tipos de softwares) encontrados na literatura internacional.
Indústria 4.0 na indústria da construção
Authors: Santos Priscilla Vanessa Pereira dos , Saurin Tarcisio Abreu , Ayala Néstor Fabián
Published: December 2023

Na busca pela competitividade, empresas de construção passaram a incorporar tecnologias associadas à indústria 4.0. Para implementar essas tecnologias, é importante que a empresa seja capaz de identificar onde ela se encontra no caminho da digitalização.  Diante disso, este estudo tem como objetivo propor um delineamento de um modelo de maturidade que relacione as tecnologias da Indústria 4.0, distribuídas em níveis de maturidade, para dimensões de excelência operacional baseadas em indicadores-chave. Realizou-se uma Revisão Sistemática da Literatura (RSL) para analisar os principais modelos de maturidade da Indústria 4.0 para a construção. Os resultados da RSL apontam para modelos de maturidade que não relacionam tecnologias da Indústria 4.0 a níveis de maturidade numa jornada de transformação digital, e indica para lacunas importantes onde pouca ênfase tem sido dedicada às áreas que refletem custos e entrega em modelos de maturidade para Indústria 4.0. Os resultados da RSL foram assimilados para propor um modelo de maturidade baseado nas dimensões de excelência operacional. Para trabalhos futuros, é sugerido o aprimoramento e validação do modelo proposto com especialistas.
Estado da arte da integração GIS x BIM no contexto das cidades inteligentes
Authors: Rosa Suélen Cardoso da , Marchiori Fernanda Fernandes , Reginato Vivian da Silva Celestino , Silva Rafael Fernandes Teixeira Da
Published: December 2023

Atualmente nota-se uma crescente preocupação em relação ao futuro das cidades, principalmente, em relação aos temas de gestão e planejamento urbano, relacionados aos momentos presente e futuro, respectivamente. Por consequência disso, muitas pesquisas têm se voltado ao foco das cidades inteligentes e às ferramentas que dão suporte à consolidação deste conceito. Neste sentido, o objetivo do presente artigo foi analisar o estado da arte da produção científica nacional e internacional acerca da integração GIS e BIM no contexto das cidades inteligentes, de forma a retratar o desenvolvimento do tema relacionado à gestão e planejamento urbano, apontando lacunas teóricas e empíricas para pesquisas futuras. Na pesquisa exploratória foram aplicados filtros de tempo, análise dos títulos/duplicados, resumos e palavras-chave, restando 37 artigos. Os resultados apontaram para um aumento no número de pesquisas envolvendo o tema das cidades inteligentes e a integração GIS x BIM, em especial no ano de 2022. Porém, apesar do número de publicações ter crescido, no Brasil ainda são poucos os autores que atuam nesse tema. A partir da análise dos resultados, sugere-se que essa lacuna seja explorada em pesquisas futuras, tendo em vista a sua relevância para o desenvolvimento social, ambiental e econômico das cidades.
Avaliação da eficácia da aplicação da aerofotogrametria no AsBuilt de edificações para vistorias de licenciamento urbanístico
Authors: Guimarães Alexandre Assunção Oliveira , Cesar Cristina Guimarães , Mello Caio César de Sousa , Oliveira Raquel Diniz
Published: December 2023

A reconstrução virtual arquitetônica por meio de drones tem permitido que vistorias de edificações para diversas finalidades, como o licenciamento urbanístico, ocorram de forma remota. Nesse contexto, a prefeitura da cidade de Belo Horizonte instaurou um procedimento diferenciado para a inspeção das edificações com a finalidade de regularização. O processo de análise das edificações totalmente virtual, baseia-se em modelos tridimensionais, reconstruídos digitalmente a partir do voo de veículos aéreos não tripulados (drones), do estado final da construção. Dessa forma, objetivou-se analisar a eficácia da aplicabilidade do modelo de nuvem de pontos obtido por aerofotogrametria a curta distância para as vistorias de licenciamento. Por meio de um estudo de caso, pôde-se investigar a viabilidade de utilizar a nuvem de pontos para a aferição dos parâmetros urbanísticos, a partir de um checklist de vistoria proposto. Complementarmente, foram explicitadas as divergências entre os modelos exigidos na portaria que regulamenta a baixa virtual e, posteriormente, foi feita a comparação da modalidade de legalização virtual com a presencial. Assim, concluiu-se que a nuvem de pontos gerada por fotogrametria a curta-distância, representa uma forma eficaz de vistoriar imóveis. Por fim, o presente estudo apresenta as limitações encontradas e as adequações para tornar mais eficazes as análises.
Níveis hierárquicos gerenciais e boas práticas enxutas
Authors: Santos Débora de Gois , Michelan Denise Conceição de Gois Santos , Viana Marina Ribeiro , Nunes Amélia Gomes , Carvalho Mayana	Chagas , Teodósio Pamella Menezes , Torres Taiane Aparecida Santos
Published: December 2023

De forma a contribuir com a difusão de informação na área de gestão da construção, estudos têm sido feitos com relação às formas de minimizar ou eliminar as perdas na construção, em particular as decorrentes da perda por making-do. Nesse artigo, investiga-se sobre a aprendizagem de conceitos enxutos por meio de jogos didáticos e sua ligação com níveis hierárquicos do planejamento. O objetivo desta pesquisa é correlacionar boas práticas enxutas utilizadas pelos jogadores com o nível hierárquico de planejamento onde devem ser aplicadas. O método de trabalho consistiu em pesquisa bibliográfica, simulação com jogos didáticos de construção de casas em Lego, para entendimento da relação das boas práticas enxutas com níveis hierárquicos e posicionamento das boas práticas identificadas nos níveis hierárquicos. Como resultado, observou-se que os fluxos enxutos com mais aprendizagem foram de materiais e mão de obra e as categorias de boas práticas com impactos mais positivos foram a de Proteção dos Processos, Proteção dos Operários, Conferência do Trabalho e Conflito Espacial. As demais tiveram decisões equivocadas nos diversos níveis hierárquicos. Conclui-se que a temática pode ser mais explorada e contribuirá para apontar lacunas de ensino em relação à aplicação de conceitos enxutos e o nível hierárquico correspondente.
Barreiras a fiscalização e monitoramento de obras públicas com uso de câmeras 360º
Authors: Gobbi Vanessa , Maculan Laércio , Costella Marcelo Fabiano , Lantelme Elvira Maria
Published: December 2023

A fiscalização e monitoramento de obras são essenciais para o desenvolvimento da produção na construção civil. No entanto, as práticas usuais para fiscalização e controle são baseadas em observações individuais, coleta e extração manual de dados que são suscetíveis a erros humanos. Com intuito de aprimorar tais aspectos, estudos apontam o uso de tecnologias digitais baseadas em imagens como alternativas que possibilitam um monitoramento mais ágil e transparente. Entretanto, apesar dessa nova abordagem é possível constatar uma lacuna quanto a utilização destas tecnologias na fiscalização e monitoramento de obras públicas. Em levantamento realizado pelo Tribunal de Contas da União, apontou-se que existem diversas irregularidades relacionadas a execução de obras públicas. Diante disto, tecnologias e processos que possam contribuir na área de fiscalização de obras públicas são necessários visando uma aplicação de recursos mais eficaz. O presente trabalho objetiva identificar as principais barreiras associadas a fiscalização de obras públicas de um órgão municipal, a fim de se obter embasamento para propor possíveis soluções através do monitoramento remoto com uso da câmera 360º. Foram aplicadas entrevistas semiestruturadas para os fiscais de obras do órgão público em estudo. Acessibilidade, periodicidade, transparência, padronização, segurança e armazenamento de dados estão entre as barreiras identificadas.
Gêmeos Digitais, BIM e Lean: Análise de sinergias via mineração de texto
Authors: Corrêa Leonardo de Aguiar , Marchiori Fernanda Fernandes , Silva Rafael Fernandes Teixeira da , Ferreira Lucas Rollin
Published: December 2023

A digitalização do mundo físico e sua integração com o mundo digital é uma oportunidade para melhorar a Indústria da Construção Civil (ICC). Conceitos como Building Information Modeling (BIM) e Lean Construction podem se beneficiar se associados a novas tecnologias como do Digital Twin (DT). O DT integra o mundo físico e digital, enfrentando desafios em várias indústrias, inclusive na ICC. O objetivo desta pesquisa é examinar e discutir as sinergias, padrões, tendências e lacunas nas pesquisas relacionadas com DT, BIM e Lean aplicando mineração de texto em 29 artigos selecionados por meio de uma revisão bibliográfica. Foi identificado crescente interesse no BIM devido à aceleração de processos. O DT vai além do BIM, permitindo modelagem atualizada e simulação de cenários "e se" com inteligência artificial. O Lean Construction busca reduzir desperdícios e aumentar a produtividade. Foram identificados seis clusters de maior interesse Smart Bulding Design, Construction Industry Process, Digital Twin Technology, LeanBIM, Managing Construction Information e Conceptual Model Simulation. Esses resultados fornecem uma visão das pesquisas recentes nessa área e podem orientar futuros estudos e aplicações práticas na ICC.
Upaya Meningkatkan Aktivitas dan Prestasi Belajar Matematika Melalui Penerapan Model Pembelajaran Konstruktivisme dengan Pendekatan pemecahan Masalah pada Siswa Kelas IV SD Negeri 1 Apuan Tahun Pelajaran 2022/2023
Authors: Suadra I Made
Published: December 2023

Penelitian ini dilatarbelakangi oleh rendahnya aktivitas dan prestasi belajar matematika siswa kelas VI SD Negeri 1 Apuan, tahun pelajaran 2022/2023. Untuk mengatasi masalah tersebut dilakukan penelitian dengan menerapkan model pembelajaran konstruktivisme. Penelitian ini bertujuan untuk meningkatkan aktivitas dan prestasi belajar siswa di sekolah tersebut. Dengan menerapkan penelitian tindakan kelas yang dilaksanakan dalam dua siklus. Data tentang aktivitas belajar siswa dikumpulkan dengan menggunakan lembar observasi, sedangkan data prestasi belajar siswa dikumpulkan dengan menggunakan tes prestasi belajar. Hasil penelitian ini menunjukkan bahwa terjadi peningkatan aktivitas belajar pada siswa kelas VI SD Negeri 1 Apuan. Pada refleksi awal aktivitas belajar siswa 1,52 yang tergolong kurang aktif. Pada siklus I terjadi peningkatan skor rata-rata aktivitas belajar siswa sebesar 2,26 yang tergolong cukup aktif. Sedangkan pada siklus II skor rata-rata aktivitas belajar siswa sebesar 3,33 yang tergolong aktif. Skor rata-rata prestasi belajar siswa pada refleksi awal 65,74. Pada siklus I skor rata-rata prestasi belajar siswa meningkat menjadi 72,61 sedangkan dari siklus I ke siklus II meningkat sebesar 8,48 menjadi 81,09. Disimpulkan bahwa penerapan model pembelajaran konstruktivisme melalui pendekatan pemecahan masalah dapat meningkatkan aktivitas dan prestasi belajar matematika siswa kelas VI SD Negeri 1 Apuan, tahun pelajaran 2022/2023. Dari hasil penelitian ini disarankan kepada guru untuk menerapkan model pembelajaran ini sehingga konsep dan materi pembelajaran dapat dengan mudah diterima dan dipahami oleh siswa.
Pediatric imaging of neuroblastoma-From classic to atypical
Authors: Scolnik Michal , Glozman Luda , Mandel-Shorer Noa , Soudack Ben-Nun Michalle , Ilivitzki Anat
Published: December 2023

Neuroblastoma (NB) is the most common extracranial solid tumour in children, accounting for approximately eight percent of paediatric cancer and fifteen percent of pediatric cancer deaths. Reaching a correct and timely diagnosis is extremely important, especially in aggressive NB. Prognosis and treatment are based on tumour biology and genetics, patient age and perhaps most importantly, disease stage. The current staging system relies heavily on imaging, and this pictorial essay provides a description of the radiological features of NB, from classic to atypical, and the modalities used to help confirm the diagnosis and staging of NB. Our aim is to provide radiologists with a comprehensive collection of presentations of NB, to help improve diagnostic accuracy and decrease time to diagnose.
Comparative study of setup errors between new and reused thermoplastic masks in irradiated head and neck cancer patients
Authors: Chumsuwan Nipha , Romkedpikun Lalita , Thongthae Janyaporn , Yousuk Tanapan
Published: December 2023

Background: The accuracy and precision of patient setup are important in radiotherapy. The thermoplastic mask is used to immobilize head and neck cancer patient. However, the mask is reused for low-income patients. Therefore, the setup error should be evaluated to approve that these patients remain in the exact position during treatment.
Objective: To investigate setup errors with the use of thermoplastic masks in head and neck cancer patients and to compare setup errors of new and reused thermoplastic masks.
Materials and Methods: Eighty patients who underwent volumetric modulated arc radiotherapy (VMAT) for head and neck cancer lesions were retrospectively evaluated. The setup error, population systematic error, and population random error were calculated. Subsequently, setup errors in patients using the new and reused thermoplastic masks were compared.
Results: The population systematic error in the vertical, longitudinal, and lateral directions for new masks was 2.02, 2.27, and 2.13 mm, respectively, and that for reused masks was 2.37, 1.96, and 2.33 mm, respectively. The population random error in the vertical, longitudinal, and lateral direction for new masks was 1.46, 1.54, and 1.57 mm, respectively, and that for reused masks was 1.65, 1.63, and 1.87 mm, respectively. The results showed no statistically significant difference supported by p value > 0.05 in the setup error between using the new and reused thermoplastic masks in all directions.
Conclusion: For head and neck radiotherapy, the population setup errors were < 3 mm in all directions. Moreover, thermoplastic masks can be reused in patients with head and neck cancer.
The role of pharmacist education as a catalyst: Examining COVID-19 vaccine acceptance and hesitancy in senior Lebanese citizens
Authors: El khatib Sarah , Bou-Malham Carmela , Moughnieh Fatima , Haddad Chadia , Hallit Souheil , Akel Marwan , Salameh Pascale , Shouman Zeinab , Iskandar Katia
Published: December 2023

Objective: This study aims to underscore the potential of pharmacist education in bridging the gap between COVID-19 vaccine hesitancy and acceptance, focusing on senior Lebanese citizens.
Methods: The study is an online cross-sectional observational survey using the snowball technique. It was conducted in Lebanon during the lockdown over a period of five months from December 2020 to April 2021.  Two hundred Lebanese adults aged 65 years and older with internet access were enrolled.
Results: In total, 229 seniors completed the questionnaire, among which 18.8% took the COVID-19 vaccine. Results showed a significant association between vaccine-intake individuals with a higher number of comorbidities (ORa=1.15, 95% CI (1.09;1.22)). Acceptance of the vaccine (ORa=1.12, 95% CI (1.04; 1.20)) had a more significant influence than vaccine hesitancy (ORa=0.81, 95% CI (0.73; 0.90)).  Key factors affecting higher vaccine acceptance were a recent history of falls (Beta=2.545, CI (0.823;4.268)), and seeking advice from a pharmacist (Beta=3.992, CI (0.877;7.106)) while being a healthcare professional was associated with lower acceptance (Beta=-2.398, CI (-4.492; -0.305)).
Conclusion: This study accentuates the vital role of pharmacists' educational influence in promoting vaccine acceptance among seniors, emphasising the need to empower the elderly in their health choices for effective disease prevention.
EKONOMSKA VALORIZACIJA PRAVOVREMENOG DJELOVANJA NA IZVANREDNA VODNA STANJA S OBZIROM NA OGRANIČENJE PROIZVODNJE ELEKTRIČNE ENERGIJE
Authors: Jurić Ivan , Blažević Tonći , Bošnjak Davor
Published: December 2023

Ovim radom prikazati će se konkretan primjer uspješne suradnje operativnih interdisciplinarnih timova u HEP grupi posebice HEP – Proizvodnje d.o.o. i HEP – Trgovine d.o.o., HOPS Hrvatskog operatora prijenosnog sustava d.d., Službi civilne zaštite, Hrvatskih voda, sinoptičara u Državnom hidrometeorološkom zavodu DHMZ, te lokalne samouprave i ostalih uključenih strana kao aktivnu reakciju na planiranje rada reverzibilne hidroelektrane RHE Velebit u uvjetima ekstremnih dotoka i borbe protiv poplava na širem slivu rijeke Zrmanje. Karakteristična situacija koja će biti opisana ovim radom bila je stanje visokih dotoka u akumulacijska jezera reverzibilne hidroelektrane RHE Velebit koja se nalazi na rijeci Zrmanji. Radi se o vremenskom periodu tijekom vodnog vala u prosincu 2022. godine kad je zadatak bio u što većem obimu iskoristiti vodni potencijal, a da se ni u jednom trenutku ne ugroze ljudski životi i materijalna dobra koja se nalaze na putu rijeke Zrmanje. U današnjim uvjetima, kada s jedne strane svjedočimo sve izraženijim ekstremnim hidrometeorološkim prilikama zbog sve većeg utjecaja klimatskih promjena, a s druge strane nastojimo sve više povećati udio obnovljivih izvora u postojeći elektroenergetski sustav kako bi smanjili emisiju štetnih plinova u atmosferu i time pokušali usporiti daljnje posljedice klimatskih promjena, neminovno dolazi do sve većih izazova u procesu planiranja rada, a posebno vođenja elektroenergetskog sustava. U tom slučaju planiranje i uravnoteženje elektroenergetskog i plinskog sustava postaje ključni problem. Volatilnost cijena električne energije na burzama te sve kompleksnije planiranje i vođenje elektroenergetskog sustava naglašava sve više važnost znanja i iskustva koje se prenose s generacije na generacije osoba koje obavljaju poslove vođenja i planiranja.
KORIŠĆENJE T-COORDINATION PLATFORME U PROCESIMA KOORDINISANE ANALIZE SIGURNOSTI I KOORDINISANOG PRORAČUNA PRENOSNOG KAPACITETA
Authors:   SECURITY COORDINATION CENTRE SCC LTD. BELGRADE, Serbia, Prešić Andrijana , Stamenković Bojan ,   SECURITY COORDINATION CENTRE SCC LTD. BELGRADE, Serbia, Drašković Dušica ,   SECURITY COORDINATION CENTRE SCC LTD. BELGRADE, Serbia, Simić Predrag ,   SECURITY COORDINATION CENTRE SCC LTD. BELGRADE, Serbia, Janošević Kristina ,   SECURITY COORDINATION CENTRE SCC LTD. BELGRADE, Serbia
Published: December 2023

T-COORDINATION platform is developed within Horizon 2020 project TRINITY. It is a modular platform dedicated to coordination and communication between RSCs and TSOs during operational activities. Usage of the T- COORDINATION platform in the processes of coordinated security analysis and coordinated capacity calculation is described in this paper. Also, results of the practical use of the T-COORDINATION platform in mentioned processes are shown, where SCC and TSOs participants of the TRINITY project were the demonstrators. Mentioned processes were performed during the demonstration phase of TRINITY project in 2022 and 2023.
MOGUĆNOSTI UNAPREĐENjA VAŽEĆE REGULATIVE IZ OBLASTI ZAŠTITE STANOVNIŠTVA OD NEJONIZUJUĆEG ZRAČENjA SA OSVRTOM NA ELEMENTE PRENOSNOG SISTEMA KAO IZVORE ZRAČENjA
Authors:   ELECTRICAL ENGINEERING INSTITUTE ", Grbić Maja ,   NIKOLA TESLA",   , Belgrade, Serbia, Pavlović Aleksandar ,   ELECTRICAL ENGINEERING INSTITUTE "NIKOLA TESLA", Belgrade, Serbia, Ranđelović Saša ,   Joint Stock Company “Elektromreža Srbije” Serbia, Petrović Sandra ,   Joint Stock Company “Elektromreža Srbije” Serbia, Jovanović Miliša ,   Joint Stock Company “Elektromreža Srbije” Serbia
Published: December 2023

The paper analyzes the legislation in the area of protection of the general public from the non-ionizing radiation, i.e. electromagnetic field, currently in force in the Republic of Serbia. The emphasis of the paper is on the power frequency (50 Hz) electromagnetic field in the vicinity of the transmission system elements, such as overhead and cable power lines, transformer stations and switchyards. Based on many years of implementation of the law and the rulebooks in practice and a large number of conducted testings and research studies, the recommendations for the improvement of current national legislation are given.
PRORAČUN GODIŠNJEG BROJA PRESKOKA NA PRENOSNOM VODU USLED ATMOSFERSKIH PRENAPONA UVAŽAVAJUĆI EFEKAT JONIZACIJE TLA
Authors:   University of Belgrade, School of Electrical Engineering, Serbia, Rajić Tomislav , Savić Milan ,   University of Belgrade, School of Electrical Engineering, Serbia
Published: December 2023

The paper describes the research results considering transmission lines with a nominal voltage of 400 kV on mountainous rocky terrain with high specific soil resistance. Due to the strong electric field in the vicinity of the grounding system, the effect of local soil ionization occurs. Thus, the soil ionization model according to the IEC standard was used in the calculation. The statistical calculation method is described and the results of the annual number of insulation flashovers scaled to 100 km of transmission lines for different values of specific soil resistance are given. As a overvoltahe protection, line surge arresters on critical sections or the bentonite application are suggested.
UTICAJ FREKVENCIJSKI ZAVISNIH PARAMETARA TLA NA ATMOSFERSKE PRENAPONE
Authors:   University of Belgrade, School of Electrical Engineering, Serbia, Knežević Sonja , Stojković Zlatan ,   University of Belgrade, School of Electrical Engineering, Serbia, Žarković Mileta ,   University of Belgrade, School of Electrical Engineering, Serbia
Published: December 2023

The calculation of the stationary and impact characteristics of the grounding system are a complex problem due to the large number of different factors that affect them. The most important influence on these characteristics are the design parameters of the grounding electrodes, the electrical characteristics of the soil, as well as the shape, amplitude, and place of injection of the current wave. In this paper, the influence of the way of modeling the grounding electrodes on the lightningovervoltage of transmission towers was observed. If there is a direct lightning strike into the protective rope or transmission line tower, the grounding of the transmission line tower has a significant impact on reducing the possibility of overvoltage or flashover across the air gap between the shield wire and a phase conductor. The analyzes in this work were carried out in order to observe the influence of frequency-dependent soil characteristics on overvoltage that occur on the transmission line tower in case of direct lightning strike into the ground wireor the transmission line tower itself. The aim of the paper is a detailed analysis of the influence of frequency-dependent soil parameters on lightning overvoltage by comparing the frequency-dependent grounding model and the model in which frequency dependence is neglected. The paper will show the influence of the frequency-dependent specific electrical resistance of the soil as well as the relative dielectric constant on the increase in overvoltage on the transmission tower. In previous models, these parameters represented constants, which is justified only in the case of calculating the stationary characteristics of the grounding systems. The latest findings given in document 781 CIGRE Paris indicate that it is necessary to consider frequency-dependent parameters for frequencies above 100 Hz, which regularly appear when it comes to direct lightning strike. The results are presented graphically and numerically, where you can see the deviation between models that consider the frequency dependence of soil parameters and those that ignore it.
Human Relationship Management Implementation Strategy in Improving The Performance of Educators in Higher Educational Institutions
Authors: Jannah Raodatul
Published: December 2023

This paper explores the implementation of Customer Relationship Management (CRM) and Human Resources (HR) strategies to enhance the performance of educators in higher education. The study emphasizes the need for a strong and connected HR function to support faculty and staff, build new skills, and maintain a robust talent pipeline. It also discusses the concept of Student Relationship Management (SRM) as an adaptation of CRM in the education sector, focusing on strategies, processes, and philosophies that lead to the achievement of academic objectives and students' needs. The paper highlights the importance of developing competence in higher education through the promotion of understanding between students and the institution. Additionally, it examines the success factors of CRM strategies in higher education institutions, emphasizing the maintenance of long-term relationships with students and other users as a fundamental part of the University CRM system. The findings suggest that the integration of HR and CRM can lead to student satisfaction and provide a competitive advantage for higher education institutions.
Pengadaan Pejabat Tinggi Pratama Di Lingkungan Pemerintah Kabupaten Toba
Authors: Tamba Fetty Farida , Panjaitan Binur , Silalahi Wolter
Published: December 2023

Pengadaan pejabat tinggi pratama di pemerintahan daerah memainkan peran penting dalam menjalankan pemerintahan yang efektif dan berkontribusi pada pembangunan daerah. Studi ini membahas kebijakan dan implementasi pengadaan pejabat tinggi pratama di Kabupaten Toba, mengidentifikasi kendala, dan memberikan upaya-upaya untuk meningkatkan transparansi dan akuntabilitas. Kurangnya transparansi dan adanya indikasi praktik nepotisme adalah masalah serius yang mengancam integritas proses seleksi. Badan Kepegawaian dan Pegembangan Sumber Daya Manusia (BKPSDM)  Kabupaten Toba memiliki peran sentral dalam memastikan integritas dan transparansi dalam pengadaan ini. Evaluasi berkala perlu dilakukan untuk memantau dan memperbaiki proses seleksi.
Digitalisasi Pendidikan pada Implementasi Kurikulum Merdeka
Authors: Firmansyah Syaputra Achmad , Hidayati Dian , Maya Nor
Published: December 2023

Today, interactions between educators and students are not only carried out through face-to-face relationships but can also be carried out by utilizing digital media. Kurikulum Merdeka is a curriculum with various intra-curricular learning where the content will be more optimal so that students have enough time to explore concepts and strengthen competence. According to Krik & Miller qualitative research is a tradition in the scope of social science to observe a fundamental condition related to the people in it by using certain linguistic terms. The Implementation of Kurikulum Merdeka in order to restore learning through meaningful, fun, and relevant learning in accordance with the characteristics of the educational unit so that Pancasila’s students are realized who are critical, creative, independent, have faith, fear God Almighty, and have noble character, collaboration or team work, and have global diversity. Platform Merdeka Mengajar provides access for every teacher to receive training of the same quality, provides facilities for sharing inspiring good practices, makes use of available teaching tools for direct use/implementation, learning opportunities according to the needs and speed of teachers, becomes a forum for communication and networking between teachers area and get the latest teacher information and documents.
Manajemen Kegiatan Ekstrakurikuler dalam Pencapaian Prestasi Siswa (Studi Kasus di SMA Muhammadiyah 2 Al-Mujahidin Balikpapan)
Authors: Mujahidin Agus , Nur Mahmudah Fitri , Solihin
Published: December 2023

The main objective of this study is to explain how to manage an extracurricular team to achieve skilled worker status at SMA Muhammadiyah 2 Al-Mujahidin Balikpapan. But the specific aims of this study are to: 1) explain how extracurricular teams are planned and run; 2) describes how the team is monitored and assessed; and 3) explain things that support and hinder extracurricular activities. The descriptive qualitative research method was chosen as the research design. The aim of qualitative research is to gain an understanding of the phenomena associated with the research subject. Extracurriculars at SMA Muhammadiyah 2 Al-Mujahidin Balikpapan can improve student achievement at school. Because extracurriculars are very necessary in supporting student learning.
IMPROVING SECONDARY SCHOOL STUDENTS’ REPRESENTATIONAL COMPETENCE IN FORCE AND MOTION CONCEPTS
Authors: Piyatissa Shanaka , Waduge Lalitha
Published: December 2023

verbally expressed laws, mathematical equations, diagrams, graphs, charts and animations involved in physics which are related to abstract concepts. One aspect of this competence with relevance to physics education is the students’ ability to understand the physics-specific representations in relation to their physical and real-world applications which encompass to static as well as dynamic entities. In this study, attention has been paid to developing, validating and utilizing a lesson-specific assessment tool to identify students’ difficulties in understanding such representations encountered in selected Grade 10 physics-related science lessons presently taught in Sri Lankan government schools, namely, Resultant force, Newton’s laws of motion, Friction and Equilibrium of forces. The tool has been administered as an online test for a sample of 72 selected Grade 11 students who have already completed the lessons in their schools at Grade 10. It consists of 28 multiple-choice questions. It showed a mean score of 52.65% with a standard deviation of 24.94%. The tool gave high reliability (Cronbach's alpha value of 0.795). By analyzing the students’ performance at individual questions of the tool it revealed that the students have certain difficulties in understanding the representations such as the inability to determine the line of action of a force related to a given real-world situation, inability to predict the nature of the motion of an object if the object is acted upon by a constant force continuously, inability to identify difference between the action force and the reaction force mentioned in Newton’s third law of motion which act in two distinct objects, and marking such forces in a free body force diagram. The extent to which the prescribed curriculum materials help the students to overcome these difficulties has been evaluated and some suggested teaching-learning activities have been proposed to improve the students’ representational competence.
 

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ANALYZING COMMON TRIGONOMETRIC ERRORS AMONG FIRST-YEAR PRIMARY SCHOOL STUDENT TEACHERS AT THE UNIVERSITY OF BOTSWANA
Authors: Sekgoma Amantle , Salani End
Published: December 2023

Trigonometry is a fundamental mathematical concept taught at all levels of education, including primary schools. A strong understanding of trigonometry is essential for prospective teachers, especially those pursuing a career in primary school education. However, research suggests that students frequently encounter challenges and make common errors when learning trigonometric concepts. These errors have a significant impact on their overall performance and their ability to effectively teach these concepts. This study investigates the prevalent trigonometric errors made by first-year primary school student teachers at the University of Botswana. The research explores the root causes of these errors and aims to provide insights to enhance teaching methodologies within teacher training programs. By addressing these errors, the study aims to improve the quality of mathematics education in Botswana's primary schools, empowering future teachers to teach trigonometry effectively. The study includes a comprehensive analysis of common errors and recommendations for instructional interventions, drawing on responses from student answer scripts. It highlights the importance of developing a solid foundation in trigonometric concepts and the need for effective strategies to address these errors.
 

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EMPLOYEE TRANSCENDENCE AND PERFORMANCE OF HOTELS IN SOUTH-SOUTH, NIGERIA
Authors: Obiora Judipat N. , Igbojekwe P. , Ukabuilu E. N.
Published: December 2023

This research centred on investigating the relationship between transcendence, as a dimension of the emerging theme of spiritual intelligence and employee performance in 3- and 4-star hotels in the South-South of Nigeria. The research focused on a total of 3 objectives addressing the relationship between transcendence and employee performance measures such as contextual, task and adaptive performance. Data were obtained from 234 staff from 36, hotels using the questionnaire. Reliability tests for the instruments yielded positive and substantial alpha coefficients (where α > 0.70). Correlation analysis was carried out using Spearman’s Rank Order Correlation tool, and the test showed that transcendence significantly contributes toward outcomes of the task, contextual and adaptive performance, hence, all null hypotheses were rejected. It was affirmed that transcendence plays a key role in the extent to which employees are able to carry out their routine tasks, build relationships with significant others and also learn effectively. It was thereafter recommended that the management of the 3- and 4-star hotels in the South-South geographical region of Nigeria should focus on developing and advancing favourable work environment which is conducive to workers’ engagement in spirituality and their development of spiritual intelligence particularly in the area of transcendence.
 

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SEAFARER'S RESILIENCE ABILITY TO COPE WITH STRESS
Authors: Widianti Nurita
Published: December 2023

Stress is a condition that arises due to a discrepancy between the demands received and the ability to overcome them. Each person's stress resistance can be different depending on the somato-psychosocial state (Fitri et al, 2012). Job stress is an emotional and physical response that disturbs and causes harm arising from job demands that are not in accordance with competence. Resilience is the capacity of individuals to face, overcome, strengthen themselves and continue to make changes in relation to problems or trials experienced, each individual has the capacity to be resilient. Based on observations and interviews that have been conducted with seafarers, the stress that occurs on seafarers while carrying out tasks on board greatly affects their lives, the more quickly they are provoked by emotions, the more easily they get angry so they are involved in acts of violence against other people on board. The research method used was a phenomenological type qualitative method approach, the respondents of this study were seafarers of productive age and had 10 years of sailing experience. Data analysis used is observation, open interviews and non-formal interviews. The results of this study showed that seafarers' resilience attitudes and behaviors were influenced by seafarers' personal abilities (I AM), their ability to make good use of their resilience resources (I HAVE) and their ability (I CAN) to get out of stress, depression, bad experiences and past traumas. The synergy of the three is a source of resilience for sailors. Resilience in seafarers is strengthened and formed by the existence of social support obtained by seafarers through relationships with family, friends, community and the existence of work cultural values that are determined by both work cultural values from the office or work cultural values from the skipper on the ship.
 

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MODIFICATION OF PROLONGED SPEECH THERAPY IN TREATING STUTTERING AND ITS ASSOCIATED NEGATIVE TRAITS AMONG ADULTS: CASE OF NAIROBI STAMMERING SUPPORT GROUP, NAIROBI COUNTY, KENYA
Authors: Mwangi Irungu Asaph , Karia Mathew Kinyua , Wairungu George Mathenge
Published: December 2023

The purpose of this study was to evaluate the Prolonged Speech technique’s effectiveness in the treatment of stuttering and its associated traits among adults. The main objective of the study was to find out if there is a need for modifying prolonged speech techniques in treating stuttering and its associated traits. An experimental method was used where quantitative and qualitative designs were used. The study was guided by the behaviorist theory proposed by B.F. Skinner. The study was carried out at the Nairobi Stammering Support Group. The participants were ten adults who stutter and were selected through purposive sampling. Questionnaires, interviews, and observations were used to collect the data. A pilot study was carried out. All research instruments were tested for validity and reliability, the data which was corrected was categorized, coded and data was analyzed using qualitative and quantitative techniques. Quantitative data was analyzed using descriptive statistics in the form of percentages and was presented using pie charts and bar graphs. Qualitative data was analyzed after thematically arranging responses according to the research questions and objectives. The study found out that there was a need to modify prolonged speech technique by incorporating other treatment approaches especially cognitive and psychological. The study recommends more research on other stuttering treatment techniques. Further, the study recommends that speech-language therapists assess individual needs before using specific treatment techniques.

 

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STORIES OF TEACHERS HOLDING MULTIPLE ROLES OUTSIDE TEACHING: CONSEQUENCES AND OPPORTUNITIES
Authors: Toňacao Guada Cristy B. , Oliva Elleine Rose A.
Published: December 2023

Abstract:

The research study focused on the stories of teachers holding multiple roles outside teaching: consequences and opportunities, their lived experiences, how they cope with their present situation, and the insights they can share with other teachers who will experience the same experiences they have. This study used the qualitative phenomenological method of research to explore in depth the experiences, coping strategies, and personal insights that can be shared by the participants. The research study purposely identified nine (9) teachers of the senior high schools (6 for the focus group discussion and 3 for the in-depth interview) who are presently holding multiple roles while teaching in the three (3) identified national high schools in Davao Region. The results showed that the participants have their own share of good and bad experiences while holding multiple roles, stating that they encountered time management issues and expressed their struggles and stress but felt opportune with the responsibility they have at present. As their coping strategies, they expressed that resilience is accepting the things to be in the new reality, time and priorities are vital, being driven by it, learning, enjoying and loving the work and consulting and sharing thoughts with peers. Explored three strategies and methods specifically self-determination, perseverance, and sharing ideas and resources with peers. Also revealed are the insights that can be shared with others: do the best you can until you know better, in the midst of difficulty, lies opportunity and teamwork makes dream work.

 

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CHALLENGES OF SMALL-SCALE MINERS TOWARDS SUSTAINABLE RURAL LIVELIHOODS IN WARD 22, CHEGUTU DISTRICT, ZIMBABWE
Authors: Magenge Marshall Magirichi , Mapira Jemitias
Published: December 2023

The mining industry has always played a key role in Zimbabwe’s economy in pre-colonial, colonial and post-independence eras. Historical records show that by the 13th century AD, there was evidence of gold mining in the country.  During the fifteenth and sixteenth centuries, a lucrative gold and ivory trade was underway between the Portuguese and the Munhumutapa empire (Mpofu, et al., 2009). During the late 19th century, the country was occupied by pioneers of British South African origin (under the protection of the BSAP). Gold mining was the major incentive for these colonizers. Each of the pioneers was promised 3 000 acres of land as well as fifteen gold claims (Mpofu, et al., 2009). According to Bulpin (1968) rumours had been spreading in South Africa that across the Limpopo River gold could be found hanging on tree branches. Though unfounded, such stories added impetus to every white man who dreamt of getting rich quickly to join the pioneers in their migration to the new colony. Since independence in 1980, some sixty minerals have been mined in Zimbabwe including gold, copper, tin, chrome, iron ore, asbestos, coal, lithium, diamonds and platinum (Munowenyu, 1996). To date, mining contributes over 90% to the country’s GDP. However, it is also a major source of income for rural communities that rely on gold panning in order to earn a living. Although the activity is regarded as illegal it contributes significantly to rural livelihoods. Gold panners usually sell their gold to Fidelity Printers and in return get US dollars for each ounce of gold sold. Due to their lack of technology, gold panners cause a lot of environmental damage which is worsened by their use of mercury in their activities. Mercury eventually spills into rivers and streams thereby poisoning water sources and the aquatic life therein. This study exposes the economic activities of small-scale miners in rural Chegutu Ward 22 (Zimbabwe) and their implications on sustainable development.
 

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