bluuebunny/crossref_metadata_2025 huggingface dataset:
Conhecimento do Raciocínio Proporcional e seu Ensino: um estudo sobre o uso de tabelas e materiais manipuláveis
Authors: Silva Angélica Fontoura Garcia , Martins Helena do Carmo Borba , Pietropaolo Ruy Cesar
Published: January 2025

Esta pesquisa visa identificar e compreender os conhecimentos profissionais dos professores que ensinam Matemática nos Anos Iniciais a respeito do desenvolvimento do Raciocínio Proporcional entre os seus alunos, por meio da discussão coletiva sobre a utilização de tabelas e materiais manipuláveis durante a resolução de duas situações-problema. A pesquisa utiliza como referencial teórico o modelo multidimensional de domínio do conhecimento matemático para o ensino, proposto por Ball, Thames e Phelps, que categoriza os conhecimentos profissionais dos professores que ensinam a disciplina. Os procedimentos metodológicos adotados envolvem uma abordagem qualitativa, utilizando dados coletados durante uma sessão de estudo em grupo com seis professoras que ensinam Matemática nos anos iniciais. As atividades propostas durante a sessão de estudos demandam reconhecer e usar os princípios da proporcionalidade. Observou-se que as estratégias de resolução adotadas pelas professoras para resolver a situação envolveu, inicialmente, a utilização de cálculo mental e representações visuais. Identificam-se dificuldades das professoras em operar com números racionais e proporções, mas também observou-se o desenvolvimento do raciocínio proporcional ao longo da discussão e da reflexão em grupo. A utilização de recursos como materiais manipuláveis e tabelas de proporção, propostas por Lamon, foi reconhecida como uma ferramenta eficaz para auxiliar o ensino de números racionais e favorecer o desenvolvimento do raciocínio proporcional.
Avaliações lidas para estudantes cegos: análise semio-cognitiva de escritos simbólicos
Authors: Anjos Daiana Zanelato dos , Nogueira Clélia Maria Ignatius
Published: January 2025

Este texto relata parte de uma pesquisa que objetivou a análise semio-cognitiva de avaliações lidas para estudantes cegos. Dois estudantes de Ensino Médio, um cego e uma vidente, resolveram uma questão matemática envolvendo registros simbólico e figural, cujo enunciado foi lido por uma ledora com formação especializada. O intuito da pesquisa é fornecer elementos para responder ao problema de pesquisa: qual o custo cognitivo de avaliações lidas para estudantes cegos e que enxergam frente às particularidades da verbalização oral de escritos simbólicos? A conjectura inicial foi a de que os escritos simbólicos em matemática são opacos e geram dificuldades linguísticas ligadas à complexidade da linguagem algébrica. Dentre os resultados destacam-se a necessidade de formação específica para o ledor em relação à Matemática; que a produção oral é insuficiente para a compreensão em Matemática e realização da avaliação lida, sendo proposta a alternativa de um modelo misto leitura/escrita em braille.
Problematização e mentalidades de crescimento no contexto da aprendizagem matemática nos anos iniciais do ensino fundamental
Authors: Gloger Marlize dos Santos , Junqueira Sonia Maria da Silva
Published: January 2025

Este artigo apresenta os resultados de uma pesquisa de mestrado que objetivou identificar potencialidades para a aprendizagem matemática em estudantes de anos iniciais do Ensino Fundamental, com ênfase na problematização e no desenvolvimento de mentalidades de crescimento em matemática. A pesquisa foi conduzida através de oficinas de matemática com alunos do 3º ano do Ensino Fundamental de uma escola estadual em Bagé, Rio Grande do Sul. Por meio do aporte teórico-metodológico da pesquisa ação, as oficinas propiciaram a produção de dados de pesquisa e foram organizadas para proporcionar aos estudantes momentos de letramento matemático e de interação com suas experiências pessoais. O contexto de análise dos dados trilhou a perspectiva teórica do desenvolvimento de mentalidades matemáticas; mentalidade fixa e mentalidade de crescimento. Os resultados mostraram que a resolução de problemas, na perspectiva da mentalidade de crescimento em matemática, favoreceu um ambiente ativo e mais participativo. Com a presença do trabalho colaborativo e da resolução aberta de problemas, os estudantes encontraram ferramentas para a construção de hipóteses e entenderam que errar faz parte do aprendizado, pois os erros estimulam o cérebro. Em contrapartida, atividades rotineiras demonstraram favorecer uma aula de matemática mais voltada a procedimentos, sem significado ou articulação com a realidade. Por fim, concluímos que é necessário estimular as crianças desde cedo com atividades complexas, para assim fomentar o esforço e a participação ativa na construção do conhecimento matemático.
Unidade de ensino potencialmente significativa: contribuições para o ensino de equações do primeiro grau com uma incógnita
Authors: Darroz Luiz Marcelo , Rosa Cleci Teresinha Werner da , Santos Taís Montelli dos
Published: January 2025

Apresentam-se, neste artigo, os resultados de uma investigação que visou identificar as contribuições de uma Unidade de Ensino Potencialmente Significativa (UEPS) para a promoção da aprendizagem significativa de equações do primeiro grau com uma incógnita. A pesquisa foi realizada com um grupo de quinze estudantes de uma turma de sétimo ano do ensino fundamental de uma instituição pública da rede estadual do município de Passo Fundo/RS. Os dados foram coletados por meio de registros da professora-pesquisadora no diário de bordo e das atividades realizadas pelos estudantes. A análise dos dados, efetuada por meio da Análise de Conteúdo, demonstrou que atividades pensadas a partir dos preceitos das UEPS favoreceram a identificação dos conceitos subsunçores da área, a promoção da diferenciação progressiva e da reconciliação integrativa dos temas abordados, assim como a transferência dos conceitos estudados para diversos contextos.
Relações entre pensamento computacional e pensamento matemático
Authors: Prado Suzana Pereira do , Dantas Sérgio Carrazedo
Published: January 2025

O presente artigo, resultado de uma dissertação de mestrado apresentada à Universidade Estadual do Paraná, busca identificar relações existentes entre pensamento matemático e pensamento computacional para a resolução de problemas. Para fundamentar a proposta, primeiramente argumentamos sobre pensamento computacional a partir de diferentes abordagens. Em seguida, apresentamos uma discussão baseada em autores que desenvolveram, em seus argumentos algumas relações entre a resolução de problemas e pensamento matemático. Na seção seguinte, apresentamos relações observadas em processos pertinentes aos pensamentos matemático e computacional. Embora tenhamos percebido muitas similaridades entre ambas as formas de pensamento, constatamos que, diferentemente do pensamento computacional, o pensamento matemático não se ocupa em descrever como foram realizadas as abstrações para chegar à solução de um certo problema. Dessa forma, enquanto o pensamento matemático parte do geral para a busca de soluções específicas, o pensamento computacional parte do específico com vistas a resolver problemas de ordem geral.
GEOLOGIA, MINERALOGIA E DIAMANTES DA INTRUSÃO SALVADOR-1 (SERRA DO ESPINHAÇO, BAHIA)
Authors: CHAVES Mário Luiz de Sá Carneiro , ANDRADE Kerley Wanderson , BRANDÃO Paulo Roberto Gomes
Published: January 2025

RESUMO - Na região da Serra do Espinhaço (Bahia e Minas Gerais), diamantes se associam principalmente a metaconglomerados proterozoicos inseridos nas formações Tombador (BA), Grão Mogol e Sopa-Brumadinho (MG), do Supergrupo Espinhaço. Embora a ocorrência de corpos diamantíferos primários em toda essa região tenha sido sempre controversa, desde a década de 1990 é conhecida uma intrusão mineralizada na Chapada Diamantina baiana, designada “Salvador-1” em Barra do Mendes, garimpada em sua superfície desde o século XIX. A intrusão foi estudada em detalhe, sendo constituída por um talcoxisto suavemente foliado e muito alterado na superfície. Granadas, diopsídio e ilmenita magnesiana, minerais indicadores típicos de kimberlitos, são ausentes ou raríssimos no corpo, possivelmente devido aos processos de alteração e/ou metamorfismo de baixo grau. Entretanto, cromitas são abundantes, ricas em Mg e Cr (até ~65% Cr2O3), comparável com inclusões de cromita em diamantes e características de intrusões férteis. Os diamantes presentes são corroídos e de baixa qualidade gemológica; a persistência da atividade garimpeira sobre o corpo se deve provavelmente à mistura de sedimentos que acrescentou ao depósito diamantes de outra fonte secundária, provavelmente do Conglomerado Tombador, aflorante nas cercanias. A rocha que constitui a intrusão pode ser considerada um metakimberlito.
Palavras-chave: Diamante. Chapada Diamantina. Bahia. Intrusão Salvador-1.
 
ABSTRACT - In the Espinhaço Range (Minas Gerais and Bahia states), diamonds are mainly associated to Proterozoic metaconglomerates placed in Tombador (BA), Grão Mogol and Sopa-Brumadinho (MG) formations, Espinhaço Supergroup. Although the occurrence of primary diamondiferous bodies throughout this region has always been controversial, a diamond-like intrusion into the Chapada Diamantina (means Diamondiferous Tableland) of Bahia, known as "Salvador-1", Barra do Mendes, has been mining on the surface by garimpeiros since the mid-nineties. The intrusion was studied in detail, being composed of a poorly foliated talc-schist and highly altered on the surface. Garnets, diopside and Mg-ilmenite, typical indicator minerals of kimberlites, are absent or very rare in the body, possibly due to the alteration processes and/or low-grade metamorphism. However, Cr- and Mg-rich chromites (up to ~65% Cr2O3) are abundant, comparable to chromite inclusions in diamond and characteristic of fertile intrusions. Diamonds presents are corroded and of low gemological quality; the persistence of mining activity on the body is probably due to the mixing of sediments that added diamonds to the deposit from another secondary source, probably from the Tombador Conglomerate, outcropping in the vicinities. The rock that constitutes the intrusion can be considered a metakimberlite.
Keywords: Diamond. Diamantina Tableland. Bahia State. Salvador-1 Intrusion.
VARIAÇÕES MORFOLÓGICAS E EROSÃO DAS PRAIAS DO SEGMENTO CENTRAL DO ESTADO DO RIO DE JANEIRO: TÉCNICAS DE SENSORIAMENTO REMOTO E PADRÕES GRANULOMÉTRICOS
Authors: GOUVEA JÚNIOR Willian Cruz , CASTRO João Wagner de Alencar
Published: January 2025

RESUMO - O processo de erosão costeira representa grande desafio para os gestores públicos, especialmente em médias e grandes cidades brasileiras. Uma parcela significativa das cidades tem sido protegida por estruturas de enrocamento contra desastres naturais e pela ação humana. O aumento das ondas de tempestades observadas durante as estações do ano favorece inundações marinhas que poderão atingir com mais frequência áreas urbanas, exigindo que os gestores expandam as estruturas de proteção costeira. Objetiva-se identificar áreas submetidas ao recuo de linha de praia e inundações marinhas no segmento de litoral investigado através de técnicas de sensoriamento remoto e análise dos padrões granulométricos. Procedimentos metodológicos envolveram análise integrada de imagens de sensoriamento remoto dos satélites Landsat 5 (TM) e Landsat 8 (OLI) no intervalo temporal entre 1984 – 2024. Analisou-se doze amostras de sedimentos coletados nos ambientes de pós-praia e face de praia, identificando parâmetros estatísticos e morfodinâmicos relacionados a sedimentação praial. Resultados obtidos sugerem erosão costeira nas praias de Jaconé (Maricá) e Monte Alto (Arraial do Cabo), estabilidade sedimentar em Saquarema e deposição de sedimentos na praia Grande (Arraial do Cabo). Dados obtidos servirão de suporte para tomada de decisão quanto ao gerenciamento de risco geológico por parte do poder público.
Palavras-chave: Dinâmica Costeira. Risco Geológico. Erosão Costeira. Inundações Marinhas. Sensoriamento Remoto.
 
ABSTRACT - The coastal erosion process represents a great challenge for public managers, especially in medium and big Brazilian cities. A significant portion of cities have been protected by rockfill structures against natural disasters and human action. The increase in storm waves observed during the seasons favors marine flooding that could reach urban areas more frequently, requiring managers to expand coastal protection structures. The objective of this study is to identify areas of coastal erosion and marine flooding in the segment of the coast investigated through remote sensing techniques and analysis of grain size parameters. Methodological procedures involved integrated analysis of remote sensing images from the Landsat 5 (TM) and Landsat 8 (OLI) satellites in the time interval between 1984 – 2024. Twelve sediment samples collected in the backshore and shoreface environments were analyzed, identifying statistical and morphodynamic parameters related to beach sedimentation. Results suggest coastal erosion on the beaches of Jaconé (Maricá) and Monte Alto (Arraial do Cabo), sedimentary stability in Saquarema and sediment deposition on Praia Grande (Arraial do Cabo). Data obtained will serve as support for decision-making regarding geological risk management by the government.
Keywords: Coastal Dynamics. Geological Risk. Coastal Erosion. Marine Flooding. Remote Sensing.
O autorskom pravu, trojedinstvu subjekta zaštite i internetu
Authors: Marković Slobodan
Published: January 2025

Starting from the well-known statement that Internet is a disruptive technology that is changing social institutions, the author tries to explain what are the core elements of current copyright law that make it hardly compatible with the Internet. In the obvious fact that digital technology and the Internet have cut the cost of distribution of copyrighted works to zero and significantly reduced the cost of producing copyrighted works, the author sees the cause of the breakup of the traditional triune entity of the copyright holder into three: the author, producer and business user of the work, whose interests are becoming independent. This has created the conditions for reviewing the premises on which the copyright system is based. Experience shows that, despite the enormous extent of copyright infringement, the Internet became the incubator of creativity and that the relationship between creativity and copyright is not as straightforward as the official propaganda claims. This may be due to the fact that the interests of the producers and commercial users of the copyrighted works (who follow the homo economicus model of behavior) are not crucial to the behavior of the authors themselves on the internet, since the motives driving the author do not directly relate to the expectation of immediate economic benefit from each enjoyment of their work. Standing firmly on the position that copyright is a utilitarian system aimed at regulating the market of copyrighted works in order to stimulate creativity, the author comes to the conclusion that it is necessary to cautiously address the revision of basic copyright rules and abandon the false ideology of combating Internet piracy as a monster that threatens creativity.
Iscrpljenje autorskog prava na digitalnim primercima dela: evropski pristup
Authors: Popović Dušan V.
Published: January 2025

For decades, the concept of exhaustion of copyright remains largely outside of harmonisation efforts in international intellectual property law. Leaving the international aspects aside, the paper analyses the exhaustion of copyright on digital copies of works, within the framework of the European Union law. The motive for writing this paper should be found in the recent decision of the Court of Justice of the European Union in the case Tom Kabinet. In this decision, the CJEU examines the digital exhaution of copyright (more precisely, the right of communication to the public) in case of e-books. The author compares the conclusions reached by the Court in the case Tom Kabinet with those reached in the earlier case UsedSoft. The latter decision asesses the exhaustion of copyright (more precisely, the right to distribute the copies of a work) with respect to downloaded software. The two CJEU decisions interpret the provisions of different sources of EU law: in Tom Kabinet the Court analyses the provisions of the InfoSoc Directive, while in UsedSoft the Court interprets the provisions of the Software Directive. In the final part, the author discusses the consistency of the current EU framework for the digital exhaustion of copyright, in light of the principle of legal certainty.
Pravne prepreke za Creative Commons licence u autorskom pravu Srbije
Authors: Vujičić Novak
Published: January 2025

In the course of the last two decades, we can witness the increasing popularity of the Creative Commons licenses on the global level. Serbia is not an exception to this trend. This article examines, from the perspective of the Serbian law, an interaction of the Creative Commons licensing system with the rules on collective management of copyright, and with the rules on moral rights of an author, as well. The analysis aims to determine whether those two sets of rules lay down legal obstacles to the application of the Creative Commons licenses in Serbia. The analysis shows that the answer is affirmative in both cases. Three obstacles that limit or condition the application of the Creative Commons licenses derive from the rules on collective management of copyright. These are: (1) the impossibility to combine individual and collective management of rights that fall within the scope of activity of the existing collective management organizations, (2) the mandatory collective management, and (3) the rules on outsiders. In addition to that, the general rule on the inalienability of moral rights sets boundaries for the use of the Creative Commons licenses too. Furthermore, the article points out the fundamental systemic reasons behind this collision of the Creative Commons licensing system and copyright rules.
Autorskopravni pogled na korišćenje formata GIF: o adekvatnosti postojećih ograničenja prava
Authors: Popović Dušan V.
Published: January 2025

GIF is one of the most commonly used graphic interchange formats on the Internet. GIF files typically consist of excerpts of copyrighted works, such as repetitive scenes from films, music videos, TV shows etc. Copyrighted works, including the fragments from such works, may not be used without the copyright owner’s permission, except when such use if authorized under one of the copyright exceptions and limitations. One should therefore first determine whether the manner in which GIF files are used on the Internet corresponds to one of the author’s exclusive pecuniary rights, such as the right of reproduction, the „making available“ right, and the right to adapt, arrange or alter the work. Further to this, the paper asesses the use of GIF files from the perspective of the author’s moral right of protection of the work’s integrity. In cases prescribed by the law, copyrighted works may be used without the copyright owner’s permission, which is why the paper analyzes in more detail the exceptions and limitations for the purpose of quotation, for the purpose of parody and caricature, and for the purpose of incidental inclusion of a work in other material. In the final part, the use of GIF files containing exceirpts of copyrighted works is being assessed in the context of international and Constitutional guarantees of freedom of expression and freedom of scientific and artistic creativity.
Zaključenje ugovora o prodaji korišćenjem aukcijskih veb-sajtova
Authors: Mišković Maša
Published: January 2025

In this paper the author analyzes the conclusion of sales contract using auction websites, given that due to the development of digital technologies they have become widespread in the world and therefore, it can be expected that they will become popular in our country as well. At the beginning, the author makes a distinction between proprietary and intermediary websites. When goods are sold by auction using a proprietary website, there are two options depending on how the proprietary website operator acts. The first is that the operator of the proprietary website sells the goods by auction in his own name and for his own account. Another possibility is to sell the goods for the account of someone else, when it represents the platform of the auction organizer (auction house). On the manner in which the operator of the proprietary webiste acts depend the contractual parties of the sales contract. Thereby, the conclusion of the contract is possible by selling the goods exclusively using the proprietary website, but the auction can also be carried out between bidders who are present physically or electronically. That means that auction can be carried out with interactive live streaming with the physical presence of the bidders at the same time. On the manner of conducting the auction depends whether the concluded sales contract is a distance selling agreement. When goods are sold by auction using an intermediary website, the sales contract is directly concluded between its users. The operator of the intermediary website only provides the service of using the platform, by which users connect on their own and conclude contracts.
Predicting Student Performance Using Data Mining Technology in E-Learning: A Review
Authors: Hamed Haiam , Fattouh Lamiaa , Salman Hesham A. , Mahmoud Hadeer
Published: January 2025

Education data mining is analyzing educational data to improve decision-making and learning outcomes that are important for educational organizations. Utilizing educational data mining techniques is important for improving modern education. During the COVID-19 pandemic, E-learning has become more prevalent, and predicting student performance in this context has become a significant challenge. Studying and analyzing educational data is important, especially when predicting student performance. There are several factors theoretically assumed to affect student performance. These factors include the student’s prior academic achievement, study habits, access to resources, quality of teaching, class size, and the learning environment. Additionally, factors such as student engagement, support services, and institutional policies can also have an impact on student performance. After surveying, we found that random forest (RF) and recurrent neural networks (RNN) are the best models to classify and predict student performance. They perform well on educational data and can be efficiently used to predict student performance and in early warning systems.
Influence of Teacher Training on ICT Usage in School Management Information Systems: A Case of Rorya District, Tanzania
Authors: Chaula Anzawe , Mwamlangala Maclean Charles
Published: January 2025

This study investigates the influence of teacher training on the usage of Information and Communication Technology (ICT) in School Management Information Systems (SMIS) in primary schools in Rorya District, Tanzania. The research aims to determine how teacher training affects the integration and effective usage of ICT in school administration, while identifying the challenges and opportunities in this process. A descriptive research design was employed, with data collected through structured questionnaires distributed to 75 headteachers from public and private schools. Data analysis involved both descriptive statistics and multiple regression analysis using SPSS software to evaluate the relationships between teacher training, infrastructure availability, and ICT usage. The results show that frequent and targeted ICT training significantly enhances teachers’ abilities to use SMIS for administrative tasks. However, infrastructural limitations, including unreliable internet and inadequate hardware, were identified as barriers to the full adoption of SMIS. The study recommends continuous professional development programs focusing on SMIS functionalities and improved ICT infrastructure to maximize the potential of technology in school management.
Perinatal Potential Hazards of Hepatitis; a Tertiary Care Study
Authors: Aisha Ambreen  , Hussain Asim , Bano Naheed , Afsheen Nadia , Tarar Muhammad Haseeb Anwar , Iqbal Mazhar
Published: January 2025

Objective: To explore the frequency of HEV infection in pregnancy, associated risk factors and its prenatal and maternal consequences.
Study Design: Prospective longitudinal study
Place and Duration of Study: Department of Gynaecology Obstetrics, Divisional Head Quarter Hospital, Multan, Pakistan from Nov 2021 to Jun 2023.
Methodology: The research comprised 100 patients, 50 pregnant patients who met the criteria for eligibility. For seroprevalence, anti-HEV antibodies (IgG) were detected. Hepatic profile, CBC, coagulation markers, and standard workup/protocol were also assessed for prenatal fetomaternal hemorrhage.
Results: Data was gathered using pre-designed questionnaires. Of the 50 patients, 31 (62%), were HEV positive with mean age 26.90±4.16 year. Serum bilirubin levels >1.5 mg/dL in 47 patients (94.00%) with SD1.68±0.28, AST (SD85.87±51.878), ALT (SD149.42±71.90) in 38 (76.00%), low platelet count in 24 cases. There were 6 cases (9.35%) IUD, 3 (8.75%) fetal distress and 4 (12.09%) maternal distress, preterm deliveries 4 (12.09%) and 3(2.5%) neonatal deaths. Mortality rate was (38.7%) 12 cases, due to hepatic comma and intravascular coagulation and Fulminant hepatic failure.
Conclusion: Hepatitis E (HEV) infection during gestation may result in serious consequences such as elevated hepatic profiles, acute anemia, low platelet count, IUD, premature delivery, and postpartum issues, which are primarily caused by inadequate sanitation and a contaminated water source. Maternal fatalities and fetal consequences are exacerbated by HEV infection.
Accuracy of Transabdominal Ultrasonography in Diagnosing Ectopic Pregnancy, Taking SurgicalFindings as Gold Standard
Authors: Javed Muhammad Asif , Niaz Ayesha , Asim Uroosa
Published: January 2025

Objective: To determine the accuracy of transabdominal ultrasonography in diagnosing ectopic pregnancy taking surgical findings as the gold standard.Study Design: Cross-sectional study.Place and Duration of Study: Department of Radiology, Combined Military Hospital, Sialkot from October 2019 to April 2020.Methodology: A total of 211 females with a suspicion of ectopic pregnancy between 18 to 40 years of age were included in this study who fulfilled the selection criteria. Transabdominal sonography was carried out in all patients. The females were then subjected to surgery for confirmation of diagnosis. The findings were noted down on the proforma and were subjected to statistical analysis. Results: The mean age of the patients 28.38±5.61 years, the mean gestational age was 7.56±1.88 weeks and the mean parity was 2.02±0.74 children. Ectopic pregnancy on ultrasound was diagnosed in 159(75.4%) females and on surgery ectopic pregnancy was found in 157(74.4%) females. The sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of abdominal ultrasound for detecting ectopic pregnancy was 97.4%, 89%, 96.3%, 92.3% and 95.2% respectively. Conclusion: Transabdominal ultrasound had a high diagnostic accuracy for detecting ectopic pregnancy.
20 años de servicio al pueblo salvadoreño
Authors: ECA: Estudios Centroamericanos
Published: January 2025

No abstract available.
ECA Estudios Centroamericanos, Vol. 40, No. 443-444, 1985: 617-621.
La percepción de la crisis en la administración Monge Álvarez
Authors: Rojas Aravena Francisco
Published: January 2025

No abstract available.
ECA Estudios Centroamericanos, Vol. 40, No. 443-444, 1985: 651-683.
Hugo Lindo y el rescate de la realidad
Authors: F. A. E.
Published: January 2025

No abstract available.
 
ECA Estudios Centroamericanos, Vol. 40, No. 443-444, 1985: 708-712.
Correspondence Time as an Alternative Plane: Togetherness, Encounter, Virtuality
Authors: Jonutytė Jurga
Published: January 2025

The article is based on a mutual correspondence by a married couple, written in the middle of the 20th century to and from the places of imprisonment. The aim is revealing, with the help of this correspondence, the role of the common letter as an artefact maintaining the relationship between these close people, and its capacity of creating the virtual common duality of time. The notion of time in this article focuses on simultaneity (Alfred Schutz); however, the author demonstrates how written correspondence on paper creates a special kind of this temporary modus. Handwritten letters display traces of movement left by their author’s hand, thus enabling a peculiar experience of intercorporeality, or a bodily presence of another person (Tim Ingold). Therefore, rather than just conveying the meaningful content, they are capable of infecting the reader with their author’s state of mind (the notion of infection here is borrowed from Eric Landowski). The practice of corresponding enabled its participants to distance themselves from the real time and space (that is, from the painful surroundings of imprisonment), and to move into the virtual time (Henri Bergson, Gilles Deleuze). The author maintains that, rather than signifying uncertainty, illusion or mistake, such virtuality may be perceived as a readily available, benevolent status of mind, which is typical for humans finding themselves in painful situations, and familiar to many. The author also discusses the ethical and methodical issues raised by researching such kind of material. She concludes that if the material is enabled to speak first (Maria Tamboukou), its details leave traces that can be followed and interpreted, enabling us to broaden our understanding of this human activity (Adriana Cavarero, Hanna Meretoja).
Revelations of Partisan War in the Letters of Mingėla Family
Authors: Vaitkevičius Vykintas
Published: January 2025

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On an Unforgettable Partisan and a Slightly Forgotten Price of Freedom
Authors: Paskočiumaitė Greta
Published: January 2025

Apie anuos nepamirštamus laikus: Juozo Lukšos-Daumanto ir Nijolės Bražėnaitės susirašinėjimas, sudarytoja Laima Vincė-Sruoginis, Vilnius: Lietuvių literatūros ir tautosakos institutas, 2021, 478 p., ISBN 978-609-425-309-6
RIMSKO-GOTSKI FOEDUS
U IZVORIMA 3. I 4.
STOLJEĆA
Authors: Križić Ivan
Published: January 2025

Ovaj rad istražuje složen odnos iz- među Rimskog carstva i gotskog naroda od 238. do 382. godine. Analizom primarnih izvora kao što su Amijan Marcelin, Jordanes, Zo- sim, Prokopije i drugi, u radu se namjerava preispitati da li je pre- cizno ove sporazume nazvati fo- edus u klasičnom značenju te ri- ječi, s obzirom na njihove posebne karakteristike i historijski kon- tekst. Istraživanje naglašava raz- vojnu dinamiku moći između Rim- skog carstva i Gota, njihovih vojnih saveza, pregovora, identiteta i međusobne zavisnosti, kao i uloge Rimskog carstva i gotskih zajed- nica u ovom periodu. U konačnici, autor se zalaže za dublje razumi- jevanje ovih sporazuma kao oblika kontrole, a ne kao čisto diplomat- skih sporazuma, ali u isto vri- jeme i razumijevanje njihove pove- zane tradicije, dovodeći u pitanje dugotrajna općenito jednostrana i površna naučna tumačenja.
Ključne riječi kasna antika, rimsko-gotski odno- si, Rimsko carstvo, Goti, Foedus sporazumi, Amijan Marcelin, Jor- danes, Zosim, Prokopije
JEDNA KARIJERA NA
UGARSKO-OSMANSKOJ
GRANICI PRED KRAJ XV
VEKA.
DESPOT VUK GRGUREVIĆ
KAO JAJAČKI BAN
Authors: Obradović Nenad
Published: January 2025

Namera nam je da na sledećim stranicama, uz predstavljanje delovanja i zadataka pograničnih ugarskih funkcionera u svetlu po- graničnog društva, predstavimo ulogu despota Vuka Grgurevića kao jajačkog bana, koju je obav- ljao pred kraj svog života. Uko- liko se naša pretpostavka pokaže tačnom, mogao bi se period ja- jačkog banovanja despota Vuka proširiti na period i iza 1481. go- dine, te bi tako vreme njegove banske dužnosti bilo duže nego je to do sada smatrano u istorijskoj literaturi. Ovakvom zaključku ide u prilog i činjenica da je delovao kao posrednik u diplomatskim pregov- orima. Osim toga, nije neosnova- no pretpostaviti da se proslavljeni ratnik na ovom položaju nalazio do svoje smrti 1485. godine, o čemu bi svedočila činjenica da se dru- gi jajački ban ne pominje u pozna- tim izvorima do 1486. godina, a i narodna tradicija je despota Vuka zapamtila kao Jajčanina.
Ključne riječi
Ugarska, despot Vuk Grgurević, Osmansko carstvo, Jajačka bano-vina, Bosna, granica, diplomatija
OBAVJEŠTAJNE
AKTIVNOSTI U ZAPISIMA
DINASTIJSKOG
HRONIČARA IDRISA
BIDLISIJA
Authors: Gačanin Sabaheta
Published: January 2025

Čitajući hroniku Idrīsa Bidlīsija na mnogim mjestima nalazimo zapise o aktivnostima špijuna kao o ele- mentu ratne strategije Osman- ske države, bilo kroz direktne ili indirektne reference. Ovaj čla- nak filološkim metodama istražuje zapise o obavještajnim aktivnosti- ma Osmanske države u imperijal- noj ekspanziji, koje nalazimo u di- nastijskoj hronici Idrīsa Bidlīsīja i njegovim izvještajima iz misije os- mansko-safavidskog sukoba. Di- nastijska hronika datirana do prve decenije 1500-tih, iako sa šturim podacima, vrijedan je historijski iz- vor koji daje sliku rada i doprinosa špijunskih mreža u vojnopolitičkoj strategiji osmanske imperijalne politike. Bidlīsījeva pisma kao izvještaji komplementarni su izvori
Bidlīsījevoj hronici.
Osmansko carstvo, osmanska vojna historija, obavještajne aktivnosti, hronika Hešt bihešt,
pisma Idrīsa Bidlīsīja
OSNOVE I SMJERNICE RAZVOJA TURIZMA U BOSNI I HERCEGOVINI DO
1914. GODINE
Authors: M. Dujmović Sonja
Published: January 2025

U radu su sažeto predočene idej ne i infrastrukturne osnove tu- rizma i njegove smjernice u vri- jeme Austro-Ugarske Monarhije u Bosni i Hercegovini, kao i njego- va razvojna linija od elitnog tu- rizma do nagovještaja i prvih ko- raka ka njegovom omasovljenju. Izdvojeni su oni segmenti koji su omogućili unapređenje turizma – bosanskohercegovačka željeznica, mogućnosti smještaja, osnivanje i djelatnost Bosanskohercego- vačkog turističkog kluba, naučni turizam, sportska društva kao po- drška i izložbe kao propagandne i političke manifestacije. Novi karak ter turizma tokom prvog desetlje ća 20. st. također je predmet raz laganja.

Ključne riječi: turizam, Bosna i Hercegovina, austrougarski period, elitni turizam,željeznica, smještaj,Bosanskohercegovački turističkiklub, naučni turizam, sportska društva, izložbe, omasovljenje tu-
rizma
REDUCED SERVICE YEARS FOR RETIREMENT FOR HELPING PROFESSIONALS: MYTH OR POSSIBLE REALITY?
Authors: Lučić Erna , Osmanović Arnela
Published: January 2025

The study titled “Reduced Service Years for Retirement for Helping Professionals: Myth or Possible Reality?” was conducted as part of broader research on professional stress and burnout among helping professionals, integrating both theoretical and empirical approaches. During the theoretical phase, scientific and professional literature was utilized to explore the topics of professional stress and burnout among social workers and other helping professionals in social work. The empirical study sample comprised social workers and other helping professionals (social pedagogues, psychologists, legal professionals, pedagogues-psychologists, a neuropsychiatrist, and a graduate nurse) employed in social welfare centers, other public institutions (mental health centers and the Educational Center), and non-governmental organizations (Safe House). The survey was conducted on a reference sample of 63 respondents (15 male and 48 female participants) from helping professions in the Tuzla Canton area (Banovići, Kalesija, Lukavac, Srebrenik, Tuzla, and Ţivinice).The study aimed to provide insight into the problems and challenges faced daily by social workers and other helping professionals, with a focus on gaining a more comprehensive understanding of professional stress and burnout in the social work field. The onset and development of professional stress result in burnout, which adversely affects the mental and physical health of social workers and other helping professionals, as well as their personal and professional lives during the execution of work activities.
Keywords:social work, social workers, social welfare centers, professional stress, professional burnout, helping professionals, institutional/organizational protection, reduced service years for retirement.
TIME ON THE MOVE AND THE PSYCHOSOCIAL OUTCOMES OF UNACCOMPANIED MINORS
Authors: Vasilj Danijel , Kovačević Ranko , Bijedić Meliha , Muftić Edin
Published: January 2025

This research aimed to examine the relationship between the psychosocial outcomes of unaccompanied minors and the time spent on the move. The study involved 75 unaccompanied minors aged 13 to 17 residing in Bosnia and Herzegovina in temporary reception centers, safe houses, or sleeping outdoors. A quantitative cross-sectional design was used, with data collected through a predefined questionnaire on migration conditions and the Strengths and Difficulties Questionnaire (SDQ). Data were processed using correlation analysis and multiple linear regression. Results indicate that prolonged time spent on the move is positively correlated with increased emotional and behavioral difficulties. The findings underscore the need for expedited reception and integration processes to minimize the negative impact of prolonged migration. Prolonged stay in Bosnia and Herzegovina showed potential benefits for adaptation, though its effect was not statistically significant. These insights contribute to addressing the challenges faced by unaccompanied minors and optimizing interventions.
Keywords:unaccompanied minors, time on the move, psychosocial outcomes, strengths and difficulties
Modelling Thermo-Electrohydrodynamic Convection in Rotating Spherical Shell Using OpenFOAM®
Authors: Gaillard Yann , Szabo Peter S.B. , Travnikov Vadim , Egbers Christoph
Published: January 2025

Convection in rotating spherical shells can be considered a simplified analogue of many geophysical and astrophysical flows. Here, we investigate a direct numerical simulation of a dielectric fluid in an electric central force field inducing thermo-electrohydrodynamic (TEHD) convection with numerical methods to obtain an accurate solution of the transport equations describing rotating TEHD convection in a non-isothermally heated spherical shell. The choice of the numerical model is based on the International Space Station Experiment GeoFlow and its successor, AtmoFlow. The numerical methods consist of a custom-developed finite volume solver based on the OpenFOAM ecosystem that is not limited to any geometric restrictions, a commercially developed finite element method, and a pseudo-spectral method. This study aims to validate a custom-coded finite volume solver for investigating TEHD convection for a parametric study of the AtmoFlow spherical shell experiment. The developed TEHD finite volume solver showed solution errors of 1% or less compared to the other two implemented numerical methods.
Emanating Ecological Challenges Causing Retrogressive Farm Outputs in Birnin-Kudu, Jigawa State
Authors: Kamal Abdullahi , Shamsudden Abdullahi , Muhammad Auwal Ladan , Umar Aminu Mohammed
Published: January 2025

Ecological challenges are described as difficulties or problems arise from the interactions between biotic-biotic, biotic-abiotic or abiotic-abiotic in the environment. It could also be described as the negative impacts of anthropogenic activities on the earth and its compositional natural systems. They can be biotic (i.e relating to living entities, such as plants and animals) or abiotic (i.e relating to non-living entities, such as climatic conditions) in nature. In this study, a total of six hundred (600) structured questionnaires were administered across various locations in Birnin-Kudu, Jigawa State. The information obtained on the ecological challenges affecting farm outputs revealed that 52.94% of the respondents strongly agreed that plant-pest interaction affects farm output, 41.18% agreed, while only 5.88% disagreed. 63.55% of the respondents strongly agreed that changes in climatic condition affect farm outputs, while 36.47% agreed. 47.06% of the respondents strongly disagreed that the application of pesticides, herbicides and rodenticides cause effect to farm outputs, where 18% of the respondents agreed and strongly agreed that it affect farm outputs while 15.29% disagreed. 69.41% strongly agreed that the flooding affect farm output, where 30.59% agreed. The study concluded that farmers were practicing varieties of farming food crops activities including Millet, Sorghum, Maize, Sesame, and Rice production. However, interacting ecological challenges including plant-pest interactions, pesticides application, lack of fertilizer, bush burning and flood disaster have negatively affected their livelihood activities, thereby contributing to retrogressive farm output resulting to food insecurity, loss of some good crop breeds, loss of lives, disease outbreak, affect climatic conditions and poverty among farmers in the study area. Consequently, the farmers have expressed the need for the intervention of; government, farmers, non-governmental organizations, gov’t/farmers/community, agriculturalist, community leaders, agronomist, foresters, crop production expert and ecologist for contribution towards the improvement of farming activities in the study area.
Optimizing Leadership Styles for Enhanced Skills Transfer Among Construction Managers in Lagos State, Nigeria
Authors: Adebusuyi Fafure Jamiu , Oluleye Akanni Prince , James Obasa Ayotomide
Published: January 2025

It is essential to comprehend how shared leadership, transformational leadership, and other leadership philosophies can be used to encourage the transfer of skills in Lagos State’s construction management industry. In order to achieve sustainable project success, it is also essential to optimize leadership styles for improved skills transfer among construction managers. Organizations can create strategies that improve project outcomes overall and individual performance by looking at how leadership styles affect the acquisition and application of skills. The purpose of this study is to examine how leadership styles can improve the transfer of skills among construction managers in Lagos State, Nigeria. Improved cooperation, employee performance, and project outcomes in construction environments have been strongly associated with leadership methods, especially transformational and transactional types. This study focuses on the ways in which different styles affect skills transfer, which is essential to accomplishing organizational objectives and project success. For this study, a quantitative research methodology was adopted. Data was gathered in Lagos State, Nigeria, by distributing questionnaires to registered engineers, architects, builders, and quantity surveyors. Three hundred and fifty (350) questionnaires were distributed using the census technique; 228 of them were returned and deemed appropriate for examination. The questionnaire received responses from about 62% of the sample. In addition, with descriptive data like mean scores and frequency distribution, the results were displayed in tables and charts. The statistical techniques that were employed were factor analysis and the mean item score. Effective communication, management support, mentorship programs, and emotional intelligence are emphasized in the analysis as crucial tactics for maximizing leadership styles to enhance skills transfer. The results suggested that in order to improve project performance and sustainability in the construction sector, it is critical to create a collaborative and flexible leadership environment that encourages ongoing learning and development.
Evaluation of the Gelling Property of Some Local Plants Seeds as Alternative Gelling Agents to Agar-Based Microbial Culture Media
Authors: Jumbo Udofa, Edidiong , Sunday Thomas, Paul , Favour Alozie, Mfonobong , Johnny Nkanang, Abigail , Samuel Ekong, Ubong
Published: January 2025

Agar, an expensive gelling agent for culturing microbes affects holistic microbiological and pharmaceutical usage. Hence, plants used as thickening agents should be investigated. This work aims to evaluate the gelling properties of the seeds of Brachystegia eurycoma, Mucuna sloanei, Detarium microcarpum and Cucumeropsis mannii, as alternative gelling agents to agar in microbial culture media. The analyses were investigated in accordance with standard procedures and their modifications by pulverization, bleaching and physicochemical methods. The 3 plants showed relative gelling property when compared to that of agar-based media except for Cucumeropsis mannii which did not exhibit any gelling property at all concentrations. At the least (0.056g/mL) and highest (0.081g/mL) concentrations with equivalent gelling activity to agar at 0.015g/mL as the standard, B. eurycoma exhibited significant (p<0.05) gelling property in more concentrations compared to D. microcarpum and M. sloanei. Furthermore, there was improved gelling activities of the plants after treatment with 3% sodium hypochlorite especially with 250mm than 500mm sieve sizes. Homogeneity, consistency, surface-streaking, transparency, smoothness, hardness, friability of nutrient and sabouraud dextrose broths formulated with different seeds powder showed significant (P<0.05) disparities; while gelling strength (0.0325-0.13mg/ml), time (2-26 minutes) and colour (amber-light yellow) as well as pH (4.8-6.4) were significantly (P<0.05) comparable to that of agar with 0.0028-0.0056mg/ml, 10-15 minutes, amber colour, 5.6 and 6.6 as pH respectively. From this study, B. eurycoma exhibited good gelling properties followed by D. microcarpum and M. sloanei that are worth investigating further as possible alternative gelling agent to agar for formulation of microbial culture media.
Tax Evasion in the Grocery Sector: Effects on Tax Collections in Peru
Authors: MORALES-CHAVEZ Fiorella Nicole , VARGAS-FIGUEROA Joberth , LINARES-GUERRERO Melva , DIAZ-ANGULO Sindulfo Javier
Published: January 2025

The objective of the research was to determine the impact of tax evasion generated by grocery wholesalers in Peru on tax collection, since there are some gaps in the literature that addresses these issues in local markets concerning wholesale companies from medium to large companies. The study sample consisted of 25 local companies; the technique used was the survey, using the questionnaire as a data collection instrument; this instrument was validated by expert judgment and reliability analysis. The study is of basic type, quantitative approach, descriptive-correlational level and non-experimental design. Obtaining results, that wholesale grocery merchants have low tax knowledge due to lack of information and knowledge about tax payments by intentionally failing to pay the taxes due as taxpayers, obtaining a negative relationship of -0.060 of Spearman’s Rho, demonstrating that tax evasion by merchants has a negative effect on tax collection. It is concluded that there is a moderate negative relationship between the variable tax evasion and the variable tax collection, which means that the higher the cases of tax evasion, the lower the tax collection that is used for public services for the citizens.