bluuebunny/crossref_metadata_2025 huggingface dataset:
Contar histórias, cuidar da vida: educação em saúde baseada em narrativas
Authors: Silva Neide Emy Kurokawa e , Ayres José Ricardo de Carvalho Mesquita
Published: October 2024

Resumo O emprego de histórias na educação em saúde não é novo, servindo basicamente para disseminar informações e influenciar comportamentos e hábitos, com foco em resultados clínicos, como o controle dos níveis de glicose no sangue. Da crítica às limitações do modo como têm sido exploradas quanto às finalidades a que têm servido, propõe-se incorporar abordagens narrativas na educação em saúde, no âmbito de processos pedagógicos críticos. Tomaram-se como referências a Pedagogia Crítica de Paulo Freire e a apreensão ontológica do pensador Paul Ricoeur acerca da narrativa, como possibilidade de conhecimento de si na relação com o outro. Considerando que o texto narrativo expressa uma apreensão de mundo, o mundo do texto, ressalta-se seu sentido existencial, ensejando a construção e a reconstrução de modos de ser-no-mundo. A linguagem assume papel de destaque para essa compreensão do mundo-texto pelo leitor-educando, que pode concordar ou discordar com os enredos, simpatizar ou não com os personagens, conformar-se ou estranhar as situações. As narrativas podem incitar a problematização do curso das tramas apresentadas e a reconfiguração das histórias e de suas próprias histórias, em suma, estimulando reflexões sobre vulnerabilidades e potencialidades no cuidado à saúde.
Ações de combate à Covid-19 conduzidas por agentes comunitários de saúde em um município brasileiro
Authors: Chagas Alexandra Almeida Pinheiro , Barçante Joziana Muniz de Paiva , Costa Julia Ornellas , Ferreira Raquel Aparecida
Published: October 2024

Resumo Este estudo analítico teve como objetivo avaliar as ações de combate à Covid-19 na perspectiva dos agentes comunitários de saúde (ACSs). Um questionário semiestruturado em 21 questões foi utilizado para coletar as informações desejadas. Os dados foram tabulados e foi realizada uma análise descritiva das informações, utilizando o software Microsoft Excel®. O universo amostral era composto por 90 ACSs, dos quais 67% (60) participaram da pesquisa. Dentre os participantes, 92% (55) eram mulheres e 8% (5) eram homens, na faixa etária de 31 a 40 anos. Todos os ACSs (60) mencionaram a existência de casos de Covid-19 e 82% (49) relataram a ocorrência de óbitos por essa doença no seu território de atuação. Além disso, 80% (48) dos agentes detectaram casos suspeitos durante suas visitas domiciliares. Em relação à rotina de trabalho durante a pandemia, 82% (49) dos participantes afirmaram manter suas atividades e 98% (58) alegaram mudanças no método de trabalho. Apesar das mudanças e desafios impostos pela pandemia, os ACSs desempenharam importante papel na contenção da disseminação do vírus, seja por meio do monitoramento dos casos suspeitos e casos confirmados, ou através de orientações oferecidas à população.
Gestores da saúde também cuidam? Compreensões do cuidado integral entre gestores de um município do Nordeste brasileiro
Authors: Gonçalves Júnior José de Siqueira , Guimarães Maria Beatriz
Published: October 2024

Resumo O artigo objetiva discutir as diferentes compreensões de gestores da saúde pública acerca do cuidar de si e do outro em uma perspectiva integral. Estudo com abordagem qualitativa do tipo descritiva e exploratória. A coleta de dados foi realizada a partir do método cartográfico. Entrevistaram-se nove gestores no período entre outubro e dezembro de 2022. A análise dos dados se apoiou na análise de conteúdo proposta por Bardin. A partir desta pesquisa, foi possível perceber que há cuidado na hora de acolher, de escutar, de dialogar, de lidar consigo mesmo, com seus familiares e com as coisas do mundo da vida. Há uma nova perspectiva ao compreender que cuidar de si é uma expressão do preocupar-se em cuidar do outro e cuidar do outro pode ser uma face do autocuidado. Esse movimento pendular do cuidado entre o cuidar de si e dos outros acontece na vida dos gestores nem sempre de forma tão fluida, considerando que a instância do cuidar de si mostrou-se fragilizada. Sugere-se investigar os instrumentos e ferramentas para a gestão do cuidado entre os gestores e quais fatores influenciam na sua autonomia e tomada de decisão.
Transexualidade e práticas esportivas: uma análise a partir da teoria do reconhecimento
Authors: Oliveira Junior João Batista de , Moretti-Pires Rodrigo Otávio
Published: October 2024

Resumo Este estudo qualitativo investigou a inclusão de pessoas trans no esporte com base na teoria do reconhecimento. Realizado por meio de cinco grupos focais on-line com 32 participantes, identificou-se três eixos temáticos. O primeiro, “Contexto de inserção das pessoas trans no esporte - não reconhecimento”, revela experiências esportivas marcadas por violência e falta de reconhecimento. O segundo, “A urgência da ampliação do debate sobre Esporte”, explora o esporte como forma de socialização e sobrevivência. O terceiro, “Reconhecimento e passabilidade - a cis-heteronormatividade enquanto regulador do reconhecimento”, aborda a ligação entre reconhecimento e conformidade com normas de gênero hegemônico. Apesar das barreiras, a participação das pessoas trans no esporte pode desafiar normas de gênero.
EXPERIMENTAL AND CFD STUDY OF THE SURFACE THERMAL SIGNATURES AND BUOYANT TRAJECTORY OF THE SUBMERGED THERMAL WAKES
Authors: Lai Qingzhi , Wang Min
Published: October 2024

The temperature characteristics of the thermal wakes are important signals for the infrared remote sensing detection of underwater vehicles. In this work, the surface thermal signatures and buoyancy law of submerged thermal wakes were
studied. The influence of the exit speed and underwater depth on the surface temperature distribution is investigated, and the correlations of exit Froude numbers (Fr)-buoyant trajectory-surface thermal signatures are analyzed. The research demonstrates that the temperature profile on the free surface of the thermal wake consists of two parts, a high-temperature core region and a weaker outer region. With the increase of Fr, the inertial force along the flow direction is enhanced, resulting in the location (x*), where the wakes first reach the free surface, increasing linearly, whereas the spread angle decreases. The thermal wake undergoes five stages during the underwater buoyant process, consisting
of 1) near wake region, 2) first transition region, 3) stable rising region, 4) second transition region, and 5) far wake region. There is a direct influence for the submerged buoyancy trajectory on surface thermal signatures: the x* increases linearly with the length of the near wake region and decreases exponentially with a stable buoyancy angle.
In Vitro Evaluation of Bacterial Adhesion of Streptococcus mutans and Enterococcus faecalis on Sand-Blasted, Acid-Etched, and Anodized Titanium Dental Implants
Authors: Nizampuram Vamshi , Rajasekar Arvina
Published: October 2024

Although the surface modifications of the implant have been widely proposed to enhance the osseointegration, their impact on microbial adhesion is still not explored. The present in vitro study was done to compare the bacterial adhesion of S. mutans and Enterococcus faecalis on sand-blasted acid-etched and anodized titanium dental implants. Three commercially available implants, namely SLA (n = 3), SLActive (n = 3), and TiUnite (n = 3), were inoculated with the prepared broth suspension of S. mutans and E. faecalis, and were incubated at 37°C for 48 h. After incubation, the colonies were counted using direct microscopy and the results were recorded as colony forming units/mL (CFU/mL). Mean CFUs were compared between the three implants by ANOVA and pairwise comparison by Tukey's HSD post hoc test using SPSS Software. p value of < 0.05 was considered to be statistically significant. TiUnite implant showed the highest bacterial adherence for S. mutans (3.49 ± 0.53 × 102 CFU/mL) and E. faecalis (35.14 ± 1.54 × 102 CFU/mL) followed by SLA and SLActive. These data demonstrated statistically significant differences between the three types of implants (P < 0.05). Pairwise comparison showed that there was a statistically significant difference between SLA and TiUnite (P = 0.004) and SLActive and TiUnite (P = 0.001) in terms of S. mutans colony count. In terms of E. faecalis colony count, there was a statistically significant difference between SLA and SLActive (P = 0.000), SLA and TiUnite (P = 0.000) and SLActive and TiUnite (P = 0.000). Compared with sand-blasted and acid-etched dental implants, anodized dental implants showed higher adhesion of S. mutans and E. faecalis.
Impact of the Finch case on EIA and the carbon accounting space
Authors: Landsburgh Chris , D’Amico Bernardino , Davies Ian
Published: October 2024

The UK Supreme Court’s ruling in ‘R (on the application of Finch on behalf of the Weald Action Group) (Appellant) v Surrey County Council and others (Respondents)’ marks a pivotal moment in environmental law and greenhouse gas (GHG) emission responsibility. The court’s decision to include GHG emissions from the combustion of oil extracted from a project site within the environmental impact assessment (EIA) significantly broadens the scope of GHG assessments. This landmark ruling mandates a comprehensive examination of the entire project life cycle and value chain actions, setting a precedent for more rigorous environmental accountability. The judgement emphasises causation and responsibility, underscoring the necessity for transparent and traceable environmental assessments. These are crucial for promoting best practices in sustainability and fostering innovation toward a lower-carbon economy. The article delves into the implications of this decision on the EIA process, focusing on GHG emissions and the importance of including downstream emissions in environmental assessments. It also explores the concepts of enabled emissions, control, influence, and responsibility within the value chain, highlighting the collective role of all stakeholders in mitigating environmental impacts. This collective responsibility is a call to action for everyone involved. The article references relevant judgement paragraphs where appropriate.
Investigating the appropriate quality of greywater for use in eco-friendly concrete mixing
Authors: Moallemi Mohammad Ali , Dousti Ali , Shekarchi Mohammad , Nazif Sara
Published: October 2024

Owing to serious limitations of freshwater, using unconventional water resources such as greywater is unavoidable. Considering the large amount of water needed for making concrete, in this research, greywater was used to mix eco-friendly concrete. To investigate the appropriate quality of greywater, synthetic and real greywater samples were prepared, and pH, total dissolved solids (TDS), chemical oxygen demand (COD), chloride (Cl−) and sulfate (SO42−) contents were evaluated. Based on a concrete performance index, the maximum appropriate values of COD, TDS and sulfate were determined to be 119, 411 and 134 mg/l, respectively, and the water quality index should be over 67.5. The results of tests conducted on samples containing various types of greywater showed a decrease in mechanical performance, but not durability properties. The results revealed that the quality of concrete mainly depends on the quality of greywater according to the Pearson coefficient. The Pearson coefficient was generally greater than 0.4, revealing a strong correlation between greywater quality and concrete characteristics. Using a combination of greywater and potable water generally provided better performance than the use of greywater alone. Based on the results, although the use of greywater can decrease freshwater consumption, supplementary tests still need to be performed.
DISSERTATIONISTS AND OPPONENTS: DISSERTATION DEFENCE MODELS AND OPPONENCY EXPERIENCE (THE 1930s AND 1940s)
Authors:   Chelyabinsk State University, Alevras N. N.
Published: October 2024

This article explores the meaning and nature of the Opponents-Dissertationist communication models estab-lished in Soviet dissertation system, examining how they reflect the academic/professional, official, and personal interactions between scholars. The focus of the article is on the procedures for defending a doctoral dissertation. The key source of information for the research is the verbatim records (transcripts) of meetings of the academic councils at the educational institutions. By analyzing their content, the author identifies the types of interactions be-tween dissertationists and opponents that were typical during the period in question. The author reviews in detail the doctoral defense of A.V. Predtechenskiy, highlighting the specific communication between the opponents and the dissertationist, as well as between experts related to the dissertation in question. The opponents of this scholar were mainly representatives of the first generation of historians of the 1930s and 1940s trained in history at universities before the revolution. The author studies the reviews to determine the principles of expert analysis of dissertations. The interactions between the opponents and degree candidates were used to develop several dissertation defense models. These include the following: Equal among equal; Disciple dissertationists and patron/mentor opponents; and Opponents and dissertationists on a search for the meaning of historical studies. The author concludes that the Soviet dissertation system adopted pre-revolutionary academic traditions, and that dissertation opponency was viewed as a valid means of upholding professional standards and scholarly principles during the period in question.
A Study on the Grammaticality Judgement Competence and Individual Differences for Advanced Korean Learners
Authors:   The Korean Society Of Bilingualism, Lee Sunjin , Gye Eunjin , Lim Wooyeol , Kim Youngjoo
Published: October 2024

The purpose of thisstudy is to examine the relationships between grammatical judgement competenceand individual difference variables. For data collection, this study had 101 Koreanlearners perform Mini-TOPIK, GJT, PSTM, SRTT, PAT, and LCP. Mini-TOPIKwas developed to measure proficiency, GJT was used to measure grammaticalityjudgment competence and PSTM, SRTT, PAT and LCP were used to measureindividual difference variables. The main findings include: (i) The difficult featureswith low accuracy rates were adverbial particles, the auxiliary particle ‘un/nun’, theretrospective prefinal ending ‘-de-’, the nominalizing ending, the retrospectiveadnominal ‘-deon’, the conjunctive ending ‘-aseo/eoseo’ and ‘-nerago’, andquotation expressions. (ii) The influence of individual difference variables varieddepending on individual grammatical items.
Counterfactual explanations based on synthetic data generation
Authors: Zelenkov Yuri , Lashkevich Elizaveta
Published: October 2024

A counterfactual explanation is the generation for a particular sample of a set of instances that belong to the opposite class but are as close as possible in the feature space to the factual being explained. Existing algorithms that solve this problem are usually based on complicated models that require a large amount of training data and significant computational cost. We suggest here a method that involves two stages. First, a synthetic set of potential counterfactuals is generated based on simple statistical models (Gaussian copula, sequential model based on conditional distributions, Bayesian network, etc.), and second, instances satisfying constraints on probability, proximity, diversity, etc. are selected. Such an approach enables us to make the process transparent, manageable and to reuse the generative models. Experiments on three public datasets have demonstrated that the proposed method provides results at least comparable to known algorithms of counterfactual explanations, and superior to them in some cases, especially on low-sized datasets. The most effective generation model is a Bayesian network in this case.
Long-term investment optimization based on Markowitz diversification
Authors: Kulikov Alexander , Polozov Dmitriy , Volkov Nikita
Published: October 2024

The article introduces a long-term investment algorithm that identifies optimal solutions in lower dimensional spaces constructed through principal component analysis or kernel principal component analysis. Portfolio weights optimization is carried out using the Markowitz method. Hyperparameters of the model include window size, smoothing parameter, rebalancing period and the fraction of explained variance in dimensionality reduction methods. The algorithm presented incorporates weights regularization taking into account portfolio rebalancing transaction costs. Hyperparameters’ selection is based on the Martin coefficient, which allows us to consider the maximum drawdown for the suggested algorithms. The results demonstrate that the proposed algorithm, trained from 1990 to 2016, shows higher returns and Sharpe ratios compared to the S&P 500 benchmark from 2017 to 2022. This indicates that weights optimization can improve the algorithm’s performance through rebalancing.
Designing a multi-agent system for a network enterprise
Authors: Telnov Yury , Kazakov Vasiliy , Danilov Andrey
Published: October 2024

The necessity to enhance the efficiency of modern network enterprises based on digital platform technologies, Digital Twins, and Digital Threads determines the relevance of implementing dynamic multi-agent technologies in production practice. The architectural complexity of existing multi-agent systems (MAS) and the lack of scientific research in the field of justifying methods and tools for their creation motivate the goal of this study to develop a comprehensive MAS design technology. This technology should encompass all architectural levels and allow for the adaptation of reference and best design practices. This article analyzes the possibilities of applying Digital Twins and Digital Threads in the creation of network enterprises and proposes methods for their implementation using MAS. A design technology for MAS has been developed in accordance with the IIRA (Industrial Internet Reference Architecture) and RAMI (Reference Architectural Model Industrie 4.0) architectural frameworks, which enables the interconnected formation and display of design results across various architectural levels. At the business level, a method is proposed for formulating business requirements for MAS based on the selection and adaptation of business models and application scenarios. At the level of constructing manufacturing and business processes, a method for formulating functional requirements for MAS is presented, revealing the transition from value networks to manufacturing and business process structures. At the level of functional design of the network enterprise’s multi-agent system, a method is proposed for forming key design solutions from the perspective of implementing various service categories using AAS (Asset Administrative Shells) and their specialization. At the technological implementation design level of MAS, a method for implementing software agents using a microservice software organization is proposed. The method presented for adapting reference and best MAS design models allows for the selection of appropriate design solutions from libraries of reference models and knowledge bases for subsequent refinement. This accelerates and improves the quality of the design process. The implementation of the developed technology for designing multi-agent systems will increase the adaptability of network enterprises to dynamically changing business needs, taking into account the interests and capabilities of all stakeholders.
Obligations in the Digital Environment: Legal Doctrine
Authors: Adelshin Rim
Published: October 2024

Aspects of cross-sectoral influence on the spheres of private and its public regulation construct of obligation in the digital environment using the example of utility digital rights. Specific obligation relationships in the form of the exercise of rights under utility digital rights and derivative financial instruments, including under an contract between a forex dealer and an individual, and others that involve the exercise of rights using technical and electronic means. Provisions on changing the norms of the Russian Federation Civil Code regarding new objects of civil rights: utility digital rights, derivative financial instruments or their analogues — digital rights and obligations. The criteria for obligation in the digital environment are considered and conclusions are formulated about the possibility of identifying the properties of obligation: reciprocity, conditionality, potestativeness. A special element is highlighted in relation to obligations in the digital environment. Obligations in the digital environment are presented as a special category of indefinite obligations, digital rights, as new objects of civil rights based on a contract. The results of the action of the norms of Federal Law No. 34-FZ, as well as legislation in general and practice in terms of determining the legal status of participants in relations are analysed. The legal status of the information intermediary determines that it does not have the right to refer to special conditions for exemption from civil liability for violation of intellectual rights under Article 1253.1 of the Civil Code and will be involved in compensation for damage on the grounds common to entrepreneurs, provided for in its Article 401.
Artificial Intelligence in the Judiciary: Issues and Outlooks
Authors: Belyakova Anna
Published: October 2024

Application of artificial intelligence in governance and in public, economic, and political life draws the attention of many researchers from various areas of science. They study how AI affects the development of economics, law, philosophy, and medicine. They also look at how AI introduction affects various industries from an ethical and moral point of view. E.g., there is a risk that robotic systems will replace humans and labour relations will transform completely, or that goods-money relations change as marketplaces and online platforms appear. In the era of rapidly developing technology and information processes, introducing digital products and algorithms into governance and into social and economic relations is an objective necessity, so these processes gain momentum. Legal science, the legal system and law in general have to adapt to changes in society, economy, science, technology, politics, and governance. The judicial system is no exception in this situation. By multitasking and speeding up production cycles, digital and electronic products simplify and optimise production processes. At the same time, there are risks to overuse artificial intelligence and minimise the human factor. Replacing skilled staff with robots and IT systems does not always optimise processes and can result in fatal errors. Technical progress fosters the growth of fraudulent and other criminal schemes that involve information technology because it helps perpetrators to abuse law, violate personal boundaries, and constitutional and legal guarantees. The author analyses various aspects of the introduction of AI into the judicial system, and examines the reasons for and ramifications of the use of digital products and services for justice and society. The methodology of the study is based on general research ways like analysis, synthesis, generalisations and dialectical methods. Other methods include formal logical and comparative legal studies.
UMA LEGISLAÇÃO ESTADUAL OMISSA PARA PESSOAS COM TRANSTORNO DO ESPECTRO AUTISTA (TEA)
Authors: Silva Giácomo de Carli da
Published: October 2024

O presente artigo traz em seu escopo uma pesquisa documental de cunho qualitativo sobre os direitos naturais de pessoas com Transtorno do Espectro Autista (TEA), que existente apenas parcialmente na legislação do Estado do Rio Grande do Sul, no Brasil. A pesquisa teve como foco responder a seguinte pergunta: A legislação em transportes terrestres em prol das PcD (Pessoa com Deficiência) respeita a totalidade das necessidades das pessoas portadoras do TEA no Estado do Rio Grande do Sul, no Brasil? Como resultado, se entendeu que não. Nesse estado, não respeita a totalidade das necessidades das pessoas com TEA, em especial pelo fato, do exemplo trazido onde uma viagem de ônibus em um percurso de cerca de 350 quilômetros que dura cerca de 8 horas na modalidade comum, sendo que há uma modalidade de viagem mais rápida que dura cerca 5 horas, a direta. Assim, 3 horas a menos de viagem, ou seja, o menos 3 horas dentro de um ônibus, o que significa muito para uma pessoa portadora do TEA.
Vector Digestion and Purification v2
Authors: Lopez Carolina
Published: October 2024

Protocol for plasmid digestion and purification
384 Well PicoGreen v2
Authors: Institute for Brain Science Allen
Published: October 2024

Quant-iT™ PicoGreen® dsDNA Assay is used for detection and quantitation of double stranded DNA products. Note: Research reported in this publication was supported by the National Institute Of Mental Health of the National Institutes of Health under Award Number U19MH114830. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.
USDA LTAR Common Experiment measurement: Dissolved ammonia (NH3) concentration v1
Authors: Pisani Oliva
Published: October 2024

Ammonia can form naturally from organic matter mineralization or can enter the aquatic environment via anthropogenic sources such as municipal effluent discharge and agricultural runoff. The presence of ammonia (NH3) vs. ammonium (NH4+) in water depends on water pH and temperature. The un-ionized NH3 form is toxic to aquatic organisms, and both forms (NH4+ and NH3) can contribute to eutrophication and hypoxia of surface waters. The reported measurement of ammonia in water is typically the total ammonia N (TAN = NH3 + NH4+). The recommended techniques for measuring NH3 in water are the colorimetric salicylate and phenate methods, whereby an indophenol color complex is proportional to the NH3 concentration of the sample.
GenFS Metadata Cleanup Challenge protocol v1
Authors: Timme Ruth , Shumway Martin , Hope Bias Candace , Balkey Maria , Lusk Pfefer Tina
Published: October 2024

This protocol provides guidance for submitting bulk BioSample updates to NCBI for the GenFS Metadata Cleanup Challenge exercise. Table of Contents: Timeline/Workflow for the 2024 Metadata Cleanup Challenge Preparing the update file Making corrections and updates within the file Submitting the finalized template
Optimizing Hydrological Research: Comparative Analysis of DEMs for Enhanced Catchment Area Delineation
Authors:   Department of Civil Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia, Chan Ping Shawei Wong , Abdul Maulud Khairul Nizam ,   Department of Civil Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor, Malaysia,   UKM Strategy Centre, National University of Malaysia, 43650, UKM Bangi, Selangor Malaysia, Syed Abdul Rahman Syed Ahmad Fadhli ,   Earth Observation Centre, Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia,   Department of Survey and Mapping, Perak Darul Ridzuan, Jalan Dato’ Seri Ahmad Said, Greentown, 30450, Ipoh, Perak, Malaysia, Anak Kemarau Ricky ,   Earth Observation Centre, Institute of Climate Change (IPI), Universiti Kebangsaan Malaysia, 43600 UKM, Bangi, Selangor, Malaysia, Hassan Muhammad Imzan ,   Department of Geoinformation, Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, Johor Bahru, Malaysia, Mohd Fazly Amri ,   College of Built Environment, Universiti Teknnologi MARA Perlis Branch, 02600 Arau, Perlis
Published: October 2024

Catchment area delineation is fundamental for hydrological modeling and research pursuits. Traditionally, delineating catchment areas entailed manual demarcation on topographical maps, a laborious task requiring skilled personnel. However, with the advent of Geographical Information System (GIS)-based software, this process has evolved, leveraging Digital Elevation Model (DEM) data for enhanced efficiency. Despite this advancement, selecting an optimal DEM remains pivotal, balancing quality with cost, given the substantial resources and approvals often necessary for high-quality DEM acquisition. This study, utilizing ArcGIS software, aimed to compare catchment area delineations derived from three distinct DEMs: Contour-based DEM, SRTM DEM, and IFSAR DEM across multiple locations. Using IFSAR DEM as the benchmark, this study demonstrate that both Contour-based DEM and SRTM DEM offer viable alternatives, exhibiting less than a 3.5% variance in delineated catchment area across all locations. Notably, SRTM DEM outperformed Contour-based DEM, boasting higher accuracy as evidenced by lower Root Mean Square Error (RMSE) values. Furthermore, this study elucidated the influence of geological and topographical factors on DEM accuracy in catchment area determination. This comprehensive understanding underscores the significance of selecting the most suitable DEM, considering factors such as cost, accuracy, and availability for future research. This study serves as a valuable resource for researchers, aiding in the judicious selection of DEMs tailored to specific research requirements, thereby enhancing the precision and efficiency of hydrological investigations.
Enhancing Paper Strength through Blending Approach: Incorporating Oil Palm Frond Fiber into Recycled Pulp
Authors:   College of Engineering (Mechanical), Universiti Teknologi MARA, Masai 81750, Malaysia, Lee Man Djun , Lee Pui San ,   Faculty of Civil Engineering Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Gambang 26300, Malaysia, Sharudin Hazim ,   College of Engineering (Mechanical), Universiti Teknologi MARA, Masai 81750, Malaysia, Khodori Ahmad Faidzal ,   College of Engineering (Mechanical), Universiti Teknologi MARA, Masai 81750, Malaysia, Roslan Azmi ,   College of Engineering (Chemical), Universiti Teknologi MARA, Masai 81750, Malaysia, Khairulmaini Miqdad ,   College of Engineering (Mechanical), Universiti Teknologi MARA, Masai 81750, Malaysia, Michael Zeno ,   College of Engineering (Mechanical), Universiti Teknologi MARA, Masai 81750, Malaysia
Published: October 2024

Recycled fibers often demonstrate diminished conformability and inter-fiber bonding capabilities in comparison to virgin fibers due to hornification. However, the untapped potential of recycled pulp can be restored through various techniques, such as mechanical beating, additive utilization, physical fractionation, and blending. This research focuses specifically on the blending method, which utilizes oil palm frond fibers to augment the strength of paper produced from recycled pulp. Despite the extensive cultivation of oil palm trees in Malaysia, the utilization of oil palm fiber remains limited and is frequently considered waste material. Two distinct chemical pulping methods, namely sodium hydroxide and sodium sulfite, were employed to generate pulp from oil palm frond fibers, incorporating anthraquinone as an additive to enhance pulping efficiency. Three different weight percentages of fiber loading (25%, 45%, or 65%) were utilized, with the remaining content supplemented with newspaper pulp. The resultant paper was assessed for tensile strength, modulus of elasticity, and its morphology was examined using scanning electron microscopy. The findings indicate that the sulphite-soda anthraquinone treatment resulted in superior pulp for paper production, and a weight percentage of 45% fiber loading exhibited the highest tensile strength, thus yielding the highest quality paper. Overall, this study underscores the potential of integrating oil palm frond fibers into the pulp and papermaking process, thereby contributing to both economic growth and environmental sustainability.
A Study of the Implementation Factors of End-Life-Vehicle Policy
Authors:   Jabatan Kejuruteraan Awam, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Malaysia, Zainuddin Nur Anis Izzaty , Samuri Norashikin ,   Jabatan Kejuruteraan Awam, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Malaysia, Mat Yazid Muhamad Razuhanafi ,   Jabatan Kejuruteraan Awam, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Malaysia, Ismail Rozmi ,   Fakulti Sains Sosial dan Kemanusiaan, Universiti Kebangsaan Malaysia, Malaysia, Che Rose Rosniza Aznie ,   Fakulti Sains Sosial dan Kemanusiaan, Universiti Kebangsaan Malaysia, Malaysia, Tahir Zurinah ,   Fakulti Sains Sosial dan Kemanusiaan, Universiti Kebangsaan Malaysia, Malaysia, Suparjo Noordin Nur Atiqah ,   Faculty Teknologi Informasi, University Science and Technology Computer, Semarang, Indonesia, Sitinjak Charli ,   Faculty Teknologi Informasi, University Science and Technology Computer, Semarang, Indonesia
Published: October 2024

Vehicles with a lifespan exceeding 10-15 years are classified as End-of-Life Vehicles (ELV). Since widespread use of ELV could potentially pollute the environment, it is essential to formulate an ELV management framework to deal with this issue. This study aims to understand the laws related to ELV, study its implementation in other countries and measure public opinion concerning implementing ELV recycling in Malaysia. Therefore, the study surveyed 200 respondents and analysed the data using the Statistical Package Software for Social Sciences (SPSS). The results showed that the employment sector and estimated income significantly influenced knowledge of solid waste management and end-of-life vehicles, community readiness and community attitude, with a value of 0.001 (less than 0.005). The results revealed that most respondents (68.5%) agreed with the ideas concerning ELV, while 31.5% disagreed. The researcher concludes the study with recommendations to the relevant parties, including the government, to improve the final vehicle policy life before its full implementation.
Effectiveness of Secondary Aerosol Shielding Devices in Aerosol Dispersal Containment: A Comparison
Authors:   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Zulkifli Zulfikar , Khamis Nor Kamaliana ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Hzu Zen Yew ,   Jabatan Pergigian Restoratif, Fakulti Pergigian, Universiti Kebangsaan Malaysia, Baharin Badiah ,   Jabatan Pergigian Restoratif, Fakulti Pergigian, Universiti Kebangsaan Malaysia, Jamadon Nashrah Hani ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Wahid Zaliha ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Azman Abdul Hadi ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Narendran Divakarand ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia, Mohd Rasani Mohd Rasidi ,   Jabatan Kejuruteraan Mekanikal dan Pembuatan, Fakulti Kejuruteraan dan Alam Bina, Universiti Kebangsaan Malaysia
Published: October 2024

Aerosols are small particles suspended in the air that can facilitate the spread of viruses, particularly during dental procedures that produce aerosols. Despite the implementation of protective equipment, the possibility of infection remains. Hence, this study emphasizes the importance of characterizing the design of equipment that can contain the spread of aerosols during treatment. This study comprised of interviews to gather feedback from the dental team regarding the appropriateness of aerosol shields. The effectiveness of three aerosol protective device designs, Protectors A, B, and C, in preventing the spread of aerosols was evaluated through simulation using Autodesk Inventor and ANSYS Workbench software. The study›s findings indicate that all three aerosol designs exhibit a high level of efficacy in preventing the dispersion of aerosols. The difference of the random value of liquid dispersion velocity is around 0.27% to 0.54% based on the simulation results. This study also highlights the importance of ergonomic considerations, with the designs of Protector C devices demonstrating effective implementation of features in this aspect. Overall, aerosol protective devices effectively reduce the transmission of aerosols to dental team members and can also be utilized in many medical disciplines to restrict the dispersion of aerosols during treatment.
Stammering Algorithm with Adapted Multi-Layer Perceptron
Authors:   Department of Medical Instrumentation Technology Engineering, Technical Engineering College of Mosul, Northern Technical University, Ninevah, Iraq, Hussein Ali Bashar , Al-Nima Raid Rafi Omar ,   Department of Medical Instrumentation Technology Engineering, Technical Engineering College of Mosul, Northern Technical University, Ninevah, Iraq, Han Tingting ,   School of Computing and Mathematical Sciences, Birkbeck, University of London, London, United Kingdom
Published: October 2024

Stuttering (or stammering) is a common speech disorder that may continue until adulthood, if not treated in its early stages. In this study, we suggested an efficient algorithm to perform stammering corrections (anti-stammering). This algorithm includes an effective feature extraction approach and an adapted classifier. We introduced Enhanced 1D Local Binary Patterns (EOLBP) for the extraction of features and adapted a classifier of Multi-Layer Perceptron (MLP) neural network for regression. This paper uses a database that involves speech signals with stammering, it can be called the Fluency Bank (FB). The result reveals that the proposed anti-stammering algorithm obtains promising achievement, where a high accuracy of 97.22% is attained.
Design of Meta Surface-Based Patch Antenna by Using Multi-Port Power Divider for Wireless Advanced Communications
Authors:   School of Electronics Engineering, VIT AP University, Amaravathi, Andhra Pradesh, India, Rentapalli Vanitha Rani , Roy Bappadittya ,   School of Electronics Engineering, VIT AP University, Amaravathi, Andhra Pradesh, India
Published: October 2024

The compact Multi-Port Power Divider is presented based on the microstrip patch resonator. To explicate its mode of operation, the resonant property of the circular microstrip antenna is illustrated for multi-port power divider operation. This MPPD is constructed with two aligned patch resonators with a meta surface to control the radiation parameters. In this paper, the functional description of the power divider along with the meta surface can be exemplified by the field distributions of the resonating ports. The FR4 epoxy substrate material, with a dielectric constant of 4.4 and a thickness of 1.6, is used for the antenna to operate at a 2.4 GHz resonating frequency, with an antenna size of 0.4 λ0 ×0.48 λ0 ×0.128 λ0 , also having a bandwidth of 2.2GHz to 2.6GHz with a gain of 5dBi, along with an axial ratio below 3dB at the reflection coefficient of -40dB. The presence of meta surface in microstrip antenna increases the bandwidth and valued gain at certain extent, it further improves the functionality of the overall system. The performance of the proposed antenna was analyzed with the E and H planes of the radiation pattern, with improved gain obtained in the presence of a meta surface-based microstrip antenna. The meta surface appeared in the form of a mesh type of structure, fed by a microstrip antenna revealing a good agreement with the simulated one. The measured result shows that the proposed antenna has the perfect axial ratio along with a 10dB impedance bandwidth achieved with a valued gain of 5to 11dBi.
Synchronization of Phase and Frequency in Flyback Inverter Using a New Ripple Hysteresis Controller
Authors:   Department of Electrical, Electronics & System Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Chen Gongzhuo , Za`im Radin ,   Department of Electrical, Electronics & System Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia, Yusof Yushaizad ,   Department of Electrical, Electronics & System Engineering, Faculty of Engineering & Built Environment, Universiti Kebangsaan Malaysia, Malaysia
Published: October 2024

In this paper, a novel approach called ripple hysteresis controller (RHC) is proposed. Previously current signal and hysteresis band are controlled independently in the hysteresis conventional controller (HCC). However, the HCC are unable to achieve a stable current frequency due to the current signal inside the hysteresis band is less immune to disturbance and fluctuates when external signals interfere with it. To solve the problem of HCC inability to effectively control the frequency and phase of the current signal, the RHC is introduced. It is based on a novel double closed-loop control model. Firstly, a closed-loop control is carried out to compare and evaluate the frequency variation and phase synchronization of the magnetizing current. Secondly, the closed-loop control is utilised to control the hysteresis controller band. The new RHC approach is demonstrated using the MATLAB Simulink tool to substantially reduce the output ripple error of current and voltage as well as to enhance the transition accuracy at zero crossing in comparison to the HCC. This study focuses on the mathematical foundations of RHC, simulation design and result analysis. The results of the simulation illustrate the effectiveness of this innovative RHC in overcoming varying frequency and phase. In conclusion, this novel method has successfully validated the proposed RHC performance for flyback inverter application and demonstrated its superiority over HCC in several aspects.
Comparative Study of Concrete Wastes as Low-Cost Adsorbent for Copper Removal from Aqueous Solution
Authors:   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Mohd Noor Nur Syahirah , Primasari Budhi ,   Department of Environmental Engineering, Faculty of Engineering, Universitas Andalas, Padang, 25163, Indonesia, Ahmad Zailani Warid Wazien ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Jamil Zadariana ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia
Published: October 2024

The presence of copper in water sources poses significant environmental and health risks, requiring effective removal strategies. Adsorption is one of the most efficient processes to treat contaminated water due to its advantages such as availability, low cost, and eco-friendly nature. This study explores the potential of utilizing concrete wastes as a lowcost adsorbent for the copper ions removal from aqueous solutions. Two types of concrete wastes have been used as low-cost adsorbents in this study: i) normal concrete waste (NCW) with mix proportion of Cement, water, aggregates 20, aggregates 10, sand and ii) modified concrete waste (MCW) with Cement, water, aggregate 10, sand, superplasticizer (2% cement), silica fume (10% cement). The uptakes of copper ions on NCW and MCW were studied at different initial metal Cu2+ ion concentrations, pH, adsorbent dosages and contact time. The maximum removal efficiency of copper removal for both types of concrete wastes achieved 99.99% at pH 5.0 for both NCW and MCW at equilibrium conditions. The maximum metal uptakes capacity achieved at 0.6 mg/g for both NCW and MCW exhibits good adsorption characteristics. The NCW adsorption data fitted well with Langmuir isotherm (R2= 1), whilst the MCW data obeyed Freundlich isotherm (R2 = 0.9889).
Investigating Salinity Variation in Estuarine System: Effects of Upstream Water Levels – A Laboratory Study
Authors:   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Mahamood Nur Aqilah Nabihah , Farhan Haron Nuryazmeen ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Mohd Ali Siti Nurhayati ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia, Sediqi Mohammad Naser ,   Green Goal Initiative, Tohoku University, Japan, Jumain Mazlin ,   Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 UTM Johor Bahru, Johor, Malaysia
Published: October 2024

Estuaries, where freshwater rivers converge with saline ocean water, play vital roles in supporting marine life and human civilization. This study examines salinity dynamics in estuarine systems, focusing on the impact of upstream water level changes on saltwater intrusion. Through experimental manipulation in an idealised channel, varying water depths upstream were simulated. With a 15cm and 30cm differential in the water level upstream, freshwater flows from one end of the flume overflowing a moveable weir at the other end. The saline water combined with a red-coloured tracer to differentiate saltwater from freshwater, where the movement and distribution of saltwater may be roughly observed throughout the experiment and pulled upstream by the force of gravity. The analysis of the investigation was done spatially and temporally in order to determine the salinity mixing in the longitudinal, horizontal, and vertical at different heights of upstream water level. Analysis revealed that higher upstream water levels led to decreased salinity levels due to increased freshwater flow. The water level was influenced and affected the time taken for salinity to reach an equilibrium state. Hence, the higher the water level of upstream, the lower the salinity level. Findings underscore the importance of understanding how estuarine salinity is influenced by upstream conditions for effective management and conservation efforts.
The Impact of Aircraft Noise on Residents Residing in the Vicinity of Subang Airport
Authors:   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Malaysia, Zaki Muhammad Anas , Jani Janmaizatulriah ,   School of Civil Engineering, College of Engineering, Universiti Teknologi MARA (UiTM), Shah Alam, Malaysia, Azman Shamila ,   Faculty of Civil Engineering, Universiti Teknologi Malaysia (UTM), Johor Bahru, Malaysia
Published: October 2024

Noise pollution is a prevalent issue in Malaysia, and this investigation focuses on Subang Airport to assess its impact on nearby communities and explore potential mitigation strategies. Given its proximity to densely populated areas, residents express significant apprehension about the noise generated by the airport. The research methodology involves an in-depth examination of aviation noise literatures, the utilization of noise monitoring equipment (sound level meter) for data collection and an analysis of community questionnaires to gauge public perceptions of noise effects. On-site measurements were conducted at seven locations (P1-P7) around the airport, representing varying distances from the noise source over a two-week period. The daily average noise levels range from 40-65 dB(A), which exceed the WHO’s recommended maximum indoor noise level of 35 dB(A) and the suggested maximum noise level for outdoor environments of 55 dB(A). Nevertheless, these averages remain below the permissible exposure limit of 90 dB(A). The study’s significance is further assessed through questionnaire analysis, utilizing Statistical Package for the Social Sciences (SPSS) version 28. Of the 193 respondents (71.7%), the majority identify aircraft noise as a significant source of disruption, with 36.4% attributing major annoyance to traffic noise, 25.7% to industrial noise, and 9.7% to construction-related noise. Respondents collectively emphasize the importance of raising awareness about noise pollution dangers within society and underscore the government’s role in mitigating noise pollution.