bluuebunny/crossref_metadata_2025 huggingface dataset:
A series of Cu(II), Zn(II), Cd(II) and Zr(IV) MOFs with acetylene and triazole functionalized linkers
Authors: Siddique Rashid , Clegg Jack , Packman Lachlan , McMurtrie John
Published: February 2025

The last two decades have yielded remarkable progress in the development of reticular porous materials including metal organic frameworks (MOFs). However, it is still significant challenge to precisely control the secondary coordination sites or functionalities within the framework. This complexity arises due to the multitude of parameters influencing the synthesis process. Precise control of secondary sites within MOFs can be achieved through accurate linker design, overcoming limitations imposed by diverse reaction conditions. By employing modular approach in the linker design, we prepared four new di and tetra carboxylate-based linkers where acetylene and triazole functionalities were incorporated in the side arms of linkers through sequential Sonogashira, Suzuki and “click” reactions. Under similar reaction conditions, acetylenic tagged non-symmetrical linear ditopic linker, H2-1, gave 4-fold interpenetrated Cu(II) 3D framework while acetylenic tagged symmetrical linear ditopic linker, H2-2, produced 2D framework. This indicates the importance of subtle change in linker core towards the targeted assemblies. An isostructural to UiO-68, an acetylene functionalised Zirconium MOF was also prepared using H2-1 where the acetylene group was found disordered due to linker different orientational arrangements and rotation within framework. With linear triazole functionalized ditopic linker, H2-3, two isostructural 3D Cu(II) and Cd(II) 3D frameworks were prepared where triazoles of one ligand were found axially coordinated with paddlewheel units and the triazoles of the second ligand were partially hydrogen bonded. On the other hand, two isostructural 3D Zn(II) and Cd(II) MOFs were built from reaction with a tetratopic linker, H2-4, where all triazoles sites were found axially coordinated with the paddlewheel SBU. A triazole functionalized 12- connecting zirconium MOF was prepared by linker H2-3, which ester hydrolyse to linker H2-4 during MOF synthesis. All the triazole sites in this Zr MOF were found available as secondary sites. This shows with subtle changes in the linker, not only we can control the topology, interpenetration and pore size of MOFs but also availability of secondary coordination sites within framework.
The jubilee XX All-Ukrainian scientific Taliyev readings – a meeting of like-minded people
Authors: Maksymenko N. V.
Published: February 2025

On October 25, 2024, the Karazin Educational and Research Institute of Ecology will host the jubi-lee XX All-Ukrainian Scientific Taliev Readings, organized by the Department of Environmental Monitor-ing and Nature Conservation. The conference featured presentations on the following topics: the impact of war on environmental components, current problems of rational nature management and nature protection, and assessment of the ecological state of environmental components and complexes. In addition, the re-ports highlight scientific and educational issues of ecology and nature conservation in Ukraine.
Features of plasmonic enhancement of luminescence of molecular aggregates of cyanine dyes
Authors: Sorokin O.V. , Grankina I.I. , Bespalova I.I. , Yefimova S.L.
Published: February 2025

The article examines the effect of plasmon resonance of gold nanoparticles on the luminescent properties of molecular aggregates (J-aggregates) of two cyanine dyes, PIC and TDBC. It is shown that the luminescence enhancement of J-aggregates due to the exciton-plasmon interaction occurs in a very similar manner for both types of aggregates, namely: the largest enhancement factor is achieved at a distance between J-aggregates and nanoparticles of 15-20 nm, while the exciton delocalization length increases and increasing their lifetime, as well as suppressing the process of exciton self-trapping. However, these effects are more pronounced for PIC J-aggregates than for TDBC J-aggregates, despite the latter exhibiting better excitonic characteristics. It is proposed that the main factor of the detected discrepancies is the different structure of the exciton bands for J-aggregates and, accordingly, the different degree of overlap of their absorption bands with the plasmon resonance band of gold nanoparticles.
The user's adoption towards chatbot technology - An exploration
Authors: Gracia A.
Published: February 2025

This study investigates the integration of chatbot technology in customer service, emphasizing its impact on user experience and satisfaction. Leveraging both quantitative and qualitative research techniques, a survey was conducted with 120 respondents from Nagercoil City to evaluate the benefits, challenges, and overall effectiveness of chatbot systems. The analysis identified four key components, including the benefits of chatbot integration, enhancements in customer support services, user-friendliness, and customer satisfaction. Findings indicate that the primary purpose of chatbot usage is to resolve complaints, reflected in a Garrett mean score of 75.66. However, challenges such as inaccurate solutions, limited response ranges, and impersonal interactions vary significantly across different age groups. Younger users prioritize emotional understanding and personalization, while older users emphasize security and accuracy. The study reveals that satisfaction levels with chatbots differ significantly based on age and gender but not educational qualifications. These insights underscore the necessity for businesses to customize chatbot design and functionality to meet the diverse expectations of various demographic groups, thereby enhancing customer satisfaction. The study provides actionable recommendations for improving chatbot systems by addressing both technical limitations and user experience challenges, ultimately highlighting the transformative potential of chatbots in enhancing customer engagement and service quality.
A INFLUÊNCIA DOS ALGORITMOS NA PERSONALIZAÇÃO DO CONSUMO: OS NOVOS TIPOS DE VULNERABILIDADE DO CONSUMIDOR E OS DESAFIOS NA REGULAMENTAÇÃO DO COMÉRCIO ELETRÔNICO
Authors: SPAGNOLLO FORCELINI LETICIA , GUSELLA TONIAL NADYA REGINA
Published: February 2025

A presente pesquisa busca analisar a figura dos algoritmos no e-commerce e os desafios na proteção do consumidor no meio digital. Justifica-se a relevância da temática tendo em vista o expressivo e gradativo aumento do consumo através do comércio eletrônico, aliado a grande influência exercida pelos algoritmos no processo de tomada de decisão dos consumidores. Objetiva-se estudar a noção dos algoritmos e sua utilização pelos fornecedores para personalizar e fomentar o consumo, bem como compreender os novos fatores de vulnerabilidade oriundos do comércio eletrônico. Ainda, entender os desafios na regulamentação do mercado de consumo digital e na efetivação da proteção dos direitos do consumidor, tendo em vista o contínuo avanço das tecnologias da informação e da comunicação. Com isso, investiga-se como podem ser superados os desafios para efetivar a proteção do consumidor no meio digital. Para tanto, utiliza-se o método hermenêutico e como forma de pesquisa, a bibliográfica. Assim, constata-se que o meio virtual, pela utilização do algoritmo, personaliza o consumo com intuito de incentivá-lo, dá azo ao surgimento de novas formas de vulnerabilidades e fragiliza o sistema protetivo consumerista previsto no CDC. Logo, surgem desafios para a aplicação da legislação consumerista, que podem ser vencidos pelo diálogo das fontes e pela aprovação do Projeto de Lei n. 3.614/15, que atualiza o CDC, no que tange às relações digitais de consumo. Desse modo, o direito fundamental de proteção ao consumidor poderá ser efetivado, no meio virtual.
PENGEMBANGAN “SIMEZA” (APLIKASI MENGENAL ZAKAT) DALAM MATA PELAJARAN PAI UNTUK MEMBANTU PEMAHAMAN SISWA KELAS 6 SD
Authors: Azkia Ravida , Puspitasari Nurcahyani , Nur Aeni Ani
Published: February 2025

Dunia pendidikan sudah tidak asing lagi dengan istilah media pembelajaran, perangkat ajar, dan lain sebagainya. Di era modernisasi ini semua dituntut untuk serba digital, bahkan wilayah-wilayah pelosok sekalipun harus mengikuti perkembangan zaman ini agar tidak tertinggal. Sehingga proses pembelajaran peserta didik diusahakan harus berbasis digital. Inilah yang mendasari hadirnya SIMEZA (Aplikasi Mengenal Zakat) sebagai solusi untuk membantu guru dalam menghadirkan materi pembelajaran mengenai zakat secara lebih interaktif dan menarik. SIMEZA dirancang sebagai respons terhadap kebutuhan akan pendekatan pembelajaran yang lebih dinamis dan menarik bagi siswa, terutama di tengah transformasi menuju pembelajaran berbasis digital. Dengan menggunakan SIMEZA, guru dapat dengan mudah mengintegrasikan konsep-konsep zakat ke dalam pembelajaran mereka, menciptakan pengalaman belajar yang lebih menyenangkan dan menarik bagi siswa. Melalui metode penelitian D&D (Design and Development) dan teknik pengambilan data melalui wawancara dan pengisian angket oleh guru mata pelajaran PAI di sekolah dasar. Implementasinya dilakukan di  SDN Sukasirna I Sumedang, SIMEZA berhasil terbukti sebagai alat pembelajaran yang efektif dan inovatif. Dengan hasil uji coba yang menunjukkan manfaat signifikan dalam proses penyampaian materi zakat di kelas VI, SIMEZA memperkuat relevansinya sebagai solusi pendidikan yang sesuai dengan tuntutan zaman digital ini.
STUDY ON READING LITERACY IN ELEMENTARY SCHOOLS: BIBLIOMETRIC ANALYSIS 2013-2023
Authors: Fatma Rabia Supriyati , Abdul Nasir Zakaria Gamal , Nurul  , Alfi Muhimmah Hitta , Hadi Wibowo Amiruddin
Published: February 2025

This study examines scholarly literature on reading literacy in elementary schools from 2013 to 2023 through bibliometric analysis. A total of 649 documents from the Scopus database were analyzed to identify research trends, geographic distribution, researcher collaborations, and frequently discussed topics. Findings indicate a significant increase in publications, particularly in the last five years, reflecting growing interest in reading literacy. The most cited article, “Closing the achievement gap through modification of neurocognitive and neuroendocrine function” by Blair & Raver (2014), highlights effective interventions in reading literacy. The journal “Reading Teacher” is the most productive source with 20 papers, and Florida State University is the most prolific institution. The United States contributes the most papers (326), showing leadership in this field. VOSviewer thematic mapping shows primary focuses on teaching practices, intervention effectiveness, and learning experiences. Density visualizations show that literacy practices, experiences, effects, and interventions are frequently researched themes. These findings offer valuable insights for researchers, educators, and policymakers to reimprove ading literacy in elementary schools, emphasizing the importance of institutional collaboration and evidence-based interventions in improving educational outcomes.
Interactive Learning Media Loaded with Human Growth and Development Materials in Science Learning in Elementary Schools that is Decent and Practical
Authors: Safti Putri Nur , Hendrik Maulina , Romadhon Romadhon
Published: February 2025

Interactive learning media is needed to improve the quality of science learning in elementary schools. The purpose of this study is to produce interactive science learning media for growth and development materials in grade 3 of elementary school. This research method is in the form of research and development (R&D) with the ADDIE development model. This article focuses on the "D&D" stage of design  and development.  The subjects of the study were 27 grade 3 elementary school students. Data collection techniques are interviews and questionnaires. The data collection instruments are in the form of expert validation questionnaires and student and teacher response questionnaires. The data analysis technique by calculating the average and percentage of the questionnaire score then converts it into qualitative data for interpretation. The results of the study showed that media expert 1 gave a score of 88% (Very Valid), media expert 2 gave a score of 98% (Very Valid), and material expert 88% (Very Valid). The results of the one to one and small group tests  show a percentage of 100% (Very Practical). The teacher's response questionnaire obtained a score of 100% (Very Practical). In conclusion, interactive learning media to teach growth and development material in science lesson content in grade 3 elementary school is declared feasible and practical to use.
Research on the Seismic Design of Houses under Mechanical Optimization
Authors: Zhang Jingxin
Published: February 2025

With the accelerating process of urbanization, the seismic design of houses is becoming more and more critical. The frequent occurrence of earthquakes has brought a very serious threat to the safety of people's life and property, so the scientific and reasonable seismic design is of great significance. This paper focuses on exploring the application of mechanical optimization in the seismic design of houses. With theoretical analysis and case study, it is expected to give a new thinking direction and means to enhance the seismic performance of buildings. First of all, the basic theory of seismic design and related laws and regulations are introduced, then the basic concepts and methods of mechanical optimization are explained, and its practical application in architectural design is discussed. Finally, through the specific case analysis, it shows how the mechanical optimization can greatly improve the seismic level of buildings through the selection of structural form, the optimization of material performance and the design of seismic components.
Efectos de los trasplantes renales en la calidad de vida a corto y largo plazo: una revisión sistemática
Authors: Quiroz-Gomez Sergio , Sequera-Sánchez Daniela , Fuentes-Manzo Brissa Fernanda
Published: February 2025

La Enfermedad Renal Crónica (ERC) afecta al 11% de los adultos, representando un problema importante de salud pública. El trasplante renal es una intervención efectiva que mejora la calidad de vida relacionada con la salud (CVRS) en estos pacientes. Este estudio revisa la CVRS en receptores de trasplante a corto plazo (menos de 12 meses) y a largo plazo (más de 12 meses), identificando factores clave que afectan su adaptación.
Siguiendo la metodología PRISMA, se analizaron estudios publicados entre 2019 y 2024, seleccionando 33 artículos relevantes. Las herramientas SF-36 y KDQOL-36 fueron las más empleadas para medir CVRS. Los resultados indican mejoras significativas en la CVRS durante los primeros tres meses post-trasplante, especialmente en funcionamiento físico y vitalidad, que tienden a estabilizarse o mejorar ligeramente a lo largo del primer año. A largo plazo, la CVRS generalmente se mantiene o sigue mejorando.
Factores como edad, género, nivel educativo y tipo de donante influyeron en la CVRS, aunque síntomas como fatiga y dolor crónico persisten en algunos pacientes, subrayando la necesidad de soporte prolongado.
Este análisis resalta la importancia de estrategias personalizadas de rehabilitación y apoyo para optimizar la CVRS en personas trasplantadas. Estos hallazgos contribuyen al conocimiento del impacto del trasplante renal y apoyan el desarrollo de prácticas clínicas orientadas a maximizar el bienestar de los pacientes a lo largo de su recuperación.
Palabras clave: Calidad de vida, Trasplante renal, Enfermedad Renal Crónica.
A Study of Biomass Concrete Reinforced with Fiber Composites to Enhance Impact Load Capacity
Authors: Sakkampang Kunanon , Tasenhog Piyorus , Onsalung Nirut , Huchaiyaphum Narong
Published: February 2025

This research investigates the energy absorption from impact forces of steel reinforced concrete using fly ash obtained from agricultural processes, reinforced with glass fiber-reinforced polymer (GFRP) bars, compared to steel reinforcement. The reinforcement pattern involves incorporating GFRP bars into a square grid pattern of 4, 9, and 12 openings within bio-steel concrete with dimensions (W × L × H) of 40 × 40 × 10 cm. The testing is conducted using a Drop Test impact testing machine with a 30 kg hammer head at a velocity of 7 m/s, employing two different hammer head configurations: flat and 45-degree angled, to study energy absorption (Ea), specific energy absorption (Es), and the pattern of deformation resulting from impacts. The study finds that CBRHA-10-fiber A concrete exhibits higher energy absorption and specific energy absorption compared to steel-reinforced (CBRHA-10-steel A) concrete in the same configuration by 18.82% and 26.83%, respectively, in the flat-headed hammer impact configuration. Similarly, in the 45-degree angled hammer head configuration, CBRHA-10-fiber A concrete demonstrates superior energy absorption and specific energy absorption compared to steel reinforcement in the same configuration by 6.10% and 14.92%, respectively. In conclusion, bio-steel reinforced concrete with glass fiber-reinforced polymer (GRFP) reinforcement exhibits good load-bearing capacity and suitability as an alternative to steel reinforcement in future applications. Doi: 10.28991/CEJ-2025-011-02-020 Full Text: PDF
Kormányzási és utódlási kérdések egy családi vállalkozás esetében
Authors: Babos Krisztina , Vajdovich Nóra
Published: February 2025

Ha tömegközlekedéssel közelítjük meg az Ilcsi Szépítő Füvek Kft.
bázisát, az erdőn keresztül már-már érezzük a gyógynövények illatát. A
buszmegállótól egy rövid erdőszakaszon át ösvény vezet az Üdülő utcáig,
amelynek csak az egyik oldala van beépítve, a bal oldalon vadul burjánzik
az erdő és aljnövényzete. Igaz a termelést kiszolgáló családi birtok nagy
része, a kozmetikumok alapanyagait nyújtó mezők Budapesten kívül,
Pátyon és környékén érhetőek el. A város zajától már nem elnyomott, éles
madárcsicsergés kíséri el a látogatót a házig, fantasztikus az a családias
légkör, ami itt fogadja a betérőt. A méretes családi ház és a mögötte
húzódó lankás domb kis lejtőjének végében megbúvó feldolgozó összképe
már a külső szemlélő számára is azt a benyomást kelti, hogy ez egy szilárd
közeg. A 2022-es első interjú óta az is ismert tény, hogy e falak között
indult a vállalkozás: Ilcsi néni itt keverte ki első kozmetikumait. Ebben az
esettanulmányban ennek a kozmetikai termékek és szolgáltatások piacán
különleges színfoltot jelentő magyar családi vállalkozásnak a kormányzási
és utódlási kérdései kerülnek a fókuszpontba. Az irányítás és ezzel együtt
az utódlás olyannyira összetett és egymásba fonódó problémakör is
lehet, amely talán nem csak ebben a vizsgált esetben, s nem csak érzelmi
és üzleti tényezőkből fakadó kihívásokra mutat rá, hanem mind a kutatók
számára, mind tantermi együtt gondolkodásra is ideális terep.
Polikrízis a Szelep Kft.-nél
Authors: Polák-Weldon Réka
Published: February 2025

A Szelep Kft.-t 1998-ban alapították, épületgépészeti termékek – víz, gáz
és fűtés – forgalmazásával és az ezeket támogató szakmai szolgáltatások
nyújtásával foglalkozó cég. Telephelyük a fővárostól keletre található,
ahol modern, megújuló energiával működtetett irodaépületük, raktáruk,
bemutató és oktatótermük is működik. Partnereik szerte az országban
működő szakkereskedések, amelyek nem csak épületgépészeti
termékeket – csőrendszerek, szerelvények, fűtés- és légtechnikai
készülékek – vásárolhatják meg itt, hanem a tervező munkájához
szükséges ismereteket is elsajátíthatják a cég szakembereitől. A körülbelül
30 főt foglalkoztató családi vállalkozásban 7 családtag dolgozik, a cég
vezetőjének, Máriának két testvére, László és Erzsébet és lánya, Lili a cég
vezetésében vesznek részt, testvéreinek házastársai és fia pedig jelenleg
beosztottként dolgoznak. A 2008-as pénzügyi válsággal egyidőben a cég
történetének egyik súlyos válságát élte meg. Az általuk forgalmazott
termékek gyártójának tulajdonosváltása miatt felmerült annak a
lehetősége, hogy elveszítik a termékek forgalmazásának kizárólagos
magyarországi jogát.
Inadequate iodine status among women of childbearing age in Northern Norway: a cross-sectional study
Authors: Johnsen Maren , Skeie Guri , Braaten Tonje , Hope Abel Marianne , Huber Sandra , Kjellevold Marian , Evensen Elin , Rayman Margareth , Hansen Solrunn
Published: February 2025

Background: Iodine is crucial for thyroid hormones, normal metabolism, growth and development in the foetal period. Low iodine status in women of childbearing age is particularly worrying since iodine deficiency continues into pregnancy.
Objective: This study aimed to measure iodine status in non-pregnant and pregnant women in Northern Norway and investigate group differences and determinants of urine iodine concentrations (UICs) based on dietary factors and participants’ knowledge about iodine.
Methods: This cross-sectional study included pregnant (n = 131) and non-pregnant (n = 493) women from the Northern Norway Mother-and-Child Contaminant Cohort Study 2 study (2017–2021) and the Fit Futures 3 study (2020–2021). UIC was measured in spot urine, and dietary iodine intake was calculated from food frequency questionnaires. Group differences in median UIC were explored using non-parametric tests. Associations between independent variables and median UIC were estimated through quantile regression, adjusting for relevant covariates.
Results: Median UIC was 91 μg/L in non-pregnant and 134 μg/L in pregnant women, thus below the World Health Organization definition of insufficient iodine status of < 100 μg/L and 150 μg/L, respectively. Dairy products and lean fish were the most important dietary iodine sources, but the median estimated intake did not reach the recommended intake. Taking iodine supplements was the strongest determinant of UIC in both groups (P < 0.01), and users had adequate iodine status at a group level. A high proportion of the non-pregnant women (84%) were not taking iodine supplements. Poor knowledge about iodine in the participant groups was observed but was not associated with UIC.
Conclusion: Pregnant and non-pregnant women not using iodine supplements had inadequate iodine status and insufficient iodine intake. Supplement use or interventions at the societal level are essential to ensure adequate status in these vulnerable groups.
PELUANG BISNIS DAN SUMBER GIZI HEWANI DARI PERIKANAN PRODUK IKAN TANGKAP LESTARI KABUPATEN BUTON UTARA
Authors: Octavia Lestari , Mahandari Cokorda Prapti , Nirmala Intan Ria , Wiralis
Published: February 2025

Potensi produk perikanan tangkap dari perairan Indonesia dapat menjadi salah satu lokomotif yang dioptimalkan produk olahan industri, dan untuk konsumsi untuk membantu penurunan angka stunting yang masih berada pada 24.4% di tahun 2021.  Jumlah tangkapan mencapai 6,5 juta ton/tahun sementara konsumsi hanya 33,86 kg/kapita/tahun membuka peluang pengolahan dalam skala industri kecil/menengah dari jenis cakalang, tongkol, tuna dan lainnya.  Tulisan naratif ini merupakan penelusuran literatur mengenai potensi hasil tangkap di wilayah Buton Utara yang dapat digunakan untuk menaikkan nilai ekonomi dan sumber gizi berbasis produk hewani. Pendekatan kegiatan tangkap lestari di kawasan perairan mengedepankan penyelamatan lingkungan dengan selektif dalam jenis dan jumlah hasil tangkapan yang dikenal dengan istilah Optimum Sustainable Yield. Penerapan Standar Nasional Indonesia pasca produksi dapat membantu meningkatkan nilai ekonomis dan usia hasil tangkapan dan untuk memenuhi kebutuhan gizi konsumen. Pengolahan produk menjadi kering atau produk olahan dapat dikenalkan untuk pasar lokal bahkan internasional dengan menerapkan standar produk pangan berbasis peraturan baku Dukungan dari otoritas, akademisi, kelompok nelayan, koperasi, organisasi nir laba dapat membantu mewujudkan hal ini dengan melakukan perencanaan program untuk dapat merumuskan program yang berkelanjutan.
Percepções docentes sobre o uso das TDICS para o ensino de história no contexto pós pandemico
Authors:   , ESTULANO GLACIANE SOEIRO
Published: February 2025

RESUMO
Vivemos em uma sociedade digital onde praticamente tudo gira em torno da tecnologia, isso não é diferente no campo educacional. Desde o advento da Pandemia (2020) toda a rede escolar teve de se adaptar o Ensino Remoto Emergencial. O presente artigo tem como compreender as percepções docentes sobre o uso de TDICS para o ensino de história no contexto pandêmico e pós pandêmico. Para a realização desse trabalho utilizei uma pesquisa de abordagem qualitativa onde professores de história com idades entre 31 e 40 anos e a maioria que atuam a mais de dez anos na educação básica tanto no ensino fundamental como ensino médio responderam a um questionário. Os principais resultados foram
que antes da pandemia já se utilizava a tecnologia de maneira ocasional e durante o período das aulas remotas elas se tornaram indispensáveis para o ensino os entrevistados relataram que nesse período para apoiar os processos de ensino e de aprendizagem de História os mesmos utilizaram bastante ferramentas digitais como notebooks, celulares, jogos on-line entre outros. Concluímos com a presente pesquisa que a pandemia ocasionou um novo método de ensino e que tanto professores como alunos aprenderam algo nesse período e alguns professores seguiram usando essas tecnologias no ambiente de sala de aula como ferramenta auxiliar da aprendizagem
A IMAGEM E REPRESENTAÇÃO DA MULHER NA IDADE MÉDIA
Authors: SOUZA DARLAN DA CRUZ
Published: February 2025

O presente artigo tem o intuito de aprofundar e trabalhar a imagem e a representação da mulher no período feudal, onde, citaremos assuntos como a misoginia presente no período supracitado, influência da igreja em relação a mulher, a perseguição às mulheres com o argumento de que as mesmas praticavam o ataque ao sagrado, a vida das princesas e rainhas, o papel e características das camponesas, as relações de casamento e o dote e as figuras femininas da idade medieval.
Pretendemos com este artigo, esmiuçar a posição em que as mulheres foram colocadas e que, como sabemos, perdura até hoje causando danos irreparáveis no que tange a igualdade de direitos, de gênero e tabus que permeiam a vida e a história das mulheres.
Este documento tratará dos temas menos abordados nos estudos históricos, pois, assim reconhecemos que devem ser feitas como forma de retratar todas as mortes, torturas e pensamentos no qual o leitor poderá inserir-se nas próximas páginas.
Using the graduated sequence instruction to combat errors in pre-calculus
Authors: Atawura Edward Ike , Ali Clement Ayarebilla
Published: February 2025

The position of developing countries on international mathematics assessments lends to a growing concern among stakeholders. The factors are multifaceted. This explanatory sequential mixed research design used the graduated sequence instruction (GSI) model to help ameliorate the situation. The researchers sampled 100 students: 50 (experimental group) received GSI and the other 50 (control group) received traditional whole-class instruction. Participants were assessed before and after the treatments. Analysis of covariance was performed to determine the effects between the groups while controlling for pre-test, sex, and age. The results indicate significant differences between the groups. However, sex and age showed no significant differences. The qualitative texts confirmed conceptual errors in traditional instruction. It was recommended that the GSI model be employed in teaching and learning basic concepts in pre-calculus.
The effect of learning media on students' early numeracy skills: Meta-analysis
Authors: Juhaevah Fahruh , Tahmir Suradi , Talib Ahmad
Published: February 2025

This study presents a comprehensive meta-analysis of 83 research studies examining the impact of learning media on early numeracy skills development. The findings reveal a significant positive influence of educational media on students' early mathematical abilities, with notable variations across different contexts. Computer-based instruction emerged as particularly effective compared to tablet-based and traditional approaches. Geographical differences were observed, with interventions in North America and Europe demonstrating higher efficacy. Interestingly, neither the duration of media use nor the distinction between game-based and non-game-based formats showed significant differences in outcomes. These results highlight the importance of content quality and regional considerations in implementing educational media for early numeracy instruction. The study provides valuable insights for educators, policymakers, and researchers, emphasizing the need for context-sensitive approaches in educational technology deployment. Furthermore, it underscores the potential of computer-based learning in enhancing early mathematical skills, while challenging assumptions about the importance of intervention duration and game-based form.
Perceptions of secondary school mathematics teachers and the challenges faced in implementing grade 9 curriculum: A case of two schools in Lesotho
Authors: Ntereke Ntebatsoana , Mphunyane Maboi
Published: February 2025

The recent curriculum reform in Lesotho included localization of the secondary school curriculum, part of which meant a shift from a 5-year to a 4-year program. This affected the mathematics curriculum in terms of what was to be taught at different levels, thus affecting teacher preparedness for implementing the new curriculum. This study seeks to investigate the challenges faced by the teachers of mathematics in implementing the Lesotho general certificate of education mathematics curriculum in grade 9, and the perceptions that the teachers have about this curriculum. A qualitative case study approach was employed. Interviews, classrooms observations and document analysis were used for data collection. Data was analyzed thematically. Results indicate the challenges teachers experienced which included inadequate training for the reform, lack of monitoring and insufficient resources; leading teachers to mostly using teacher-centered approaches in their classrooms. These results suggest that teachers need capacitation for curriculum reform implementation.
Aplikasi Toko Online dengan Penerapan Sistem Payment Gateway untuk Transaksi Pembayaran Berbasis Web
Authors: Habibullah Yusril , Sudianto Aris , Permana Bq. Andriska Candra
Published: February 2025

The development of information technology and the internet has changed consumers’ behavior in buying and selling transactions. This causes the online buying and selling business to grow rapidly. We can find this online buying and selling activity in various media such as social media platforms and online shop websites. However, most of the payment systems are though bank transfer system and then confirmation of proof of payment, which is arguably not safe and efficient. This is impractical and vulnerable from a security point of view, especially if payments are made online. Therefore, this study aims to design a web-based online store application by implementing a payment gateway system for safer and more efficient payment transactions. The method used in this study is the waterfall method with the stages of needs analysis, design, implementation, testing and maintenance. The result of this study is the design of an online store application that has been equipped with online payment services using the Midtrans payment gateway. This system provides transaction security for customers and can make it easier for buyers to make online payments when placing orders for products because with the payment gateway system, there are more choices of payment methods, including credit cards, bank transfers, electronic wallets (GoPay), or Indomaret and Alfamart, and many more. In addition, this research is also expected to contribute to online buying and selling businesses, especially the development of better online shop applications and provide inspiration for the public to start innovate in promoting their business products.
Implementasi Algoritma K-Means Untuk Klasterisasi Peserta Keluarga Berencana Berdasarkan Tingkat Risiko Kehamilan di Desa Pringgasela Selatan
Authors: Hidayat Andrian , Nurhidayati Nurhidayati , Nur Amri Muliawan
Published: February 2025

Program Keluarga Berencana (KB) merupakan sebuah program yang bertujuan untuk mengendalikan angkapertumbuhan populasi penduduk, meningkatkan kesejahteraan keluarga, dan upaya mencegah risiko kesehatanpada ibu dan anak. Salah satu tantangan dalam program KB adalah proses identifikasi dan pelayanan yangmaksimal terhadap peserta KB yang berisiko mengalami kehamilan dengan risiko tinggi yang dapatdiidentifikasi berdasarkan faktor 4T yaitu Terlalu Muda, Terlalu Tua, Terlalu Banyak, Terlalu Dekat.Penelitian ini bertujuan untuk melakukan klasterisasi pada peserta KB berdasarkan tingkat risiko kehamilansehingga diperoleh informasi terkait kondisi peserta KB sebagai landasan penyuluhan terkait risiko kehamilantingkat tinggi dan perancangan program yang sesuai dan tepat sasaran bagi peserta KB. Penelitian inidilaksanakan di Desa Pringgasela Selatan memanfaatkan data mining menggunakan Algoritma K-MeansClustering pada 400 data peserta KB untuk membentuk kelompok atau klaster peserta KB berdasarkan tingkatrisiko kehamilannya dengan atribut berupa Nama, Usia, Jumlah Anak, dan Usia Anak Terakhir. Hasil yangdiperoleh yaitu terbentuk 2 (dua) cluster dengan Cluster 1 sebagai kelompok kehamilan berisiko tinggi dengan170 item anggota dan Cluster 0 sebagai kelompok kehamilan berisiko rendah dengan 230 item anggota.Kata Kunci : K-Means Clustering, Keluarga Berencana, Risiko Kehamilan
Rancang Bangun Smart Hidroponik Berbasis IoT dengan Aplikasi Android
Authors: Handayani Siska , Nuzuluddin M. , 'Alimuddin 'Alimuddin
Published: February 2025

Cara lain untuk memanfaatkan lahan sempit sebagai usaha dalam mengembangkan hasil pertanian, yaitu dengan cara bercocok tanam secara hidroponik. Hidroponik adalah cara bercocok tanam dengan menggunakan media air bukan tanah. Dari hasil analisa pada lokasi Lombok Center-Hidroponik, monitoring yang dilakukan pada tanaman hidroponik masih dilakukan secara manual. Karena itu perlu adanya proses pengembangan teknologi untuk mengatasi permasalahan yang dialami untuk memonitoring dan kontrol tanaman hidroponik secara realtime dalam 24 jam. Oleh karena itu dibuat alat Rancang bangun Smart Hidroponik Berbasis Internet of Things (IoT) dengan Aplikasi Android. Skripsi ini menggunakan metode penelitian Research and Development (R&D) yang merupakan singkatan Research (penelitian) dan development (pengembangan). Model R&D yang digunakan pada penelitian ini adalah model ADDIE (Analysis, Design, Development, Implementation, dan Evaluation). Cara kerja dari sistem ini yaitu ketika sensor mendeteksi derajat keasaman (pH) dan Nutrisi sesuai dengan batas yang telah ditentukan, pompa akan mengeluarkan larutan pH dan Nutrisi dengan ketentuan pH 6-7 dan Nutrisi <560 ppm. Sistem dipasang mikrokontroler yang terhubung ke internet yang kemudian akan mengirim data mengenai kondisi larutan ke aplikasi  android secara realtime. Sistem ini dapat membantu petani kebun untuk menghilangkan masa pemberian pH dan nutrisi yang harus dilakukan secara manual dan berkala, karena pemberian pH dan nutrisi dapat bekerja secara otomatis dan sekaligus dapat dipantau kondisinya dari aplikasi android apabila petani berada di luar area kebun. Kata kunci: Aplikasi Android, Hidroponik, R&D, Sensor
Rancang Bangun Penerimaan Box Paket Berbasis Internet of Things (IoT)
Authors: Febriyanti Erma Dwi , 'Alimuddin 'Alimuddin , Mandala Putra Hadian
Published: February 2025

Seiring dengan meningkatnya pengguna jasa pengiriman, tidak lepas dari masalah yang terjadi dalam proses pengiriman barang. Salah satu permasalahannya adalah dengan tidak adanya penerima paket dirumah. Pada kasus ini biasanya ada beberapa tindakan alternatif seperti paket dititipkan ke tetangga terdekat atau paket bisa diantar pada hari selanjutnya. Oleh sebab itu penelitian ini bertujuan untuk membuat rancang bangun penerimaan box paket berbasis Internet of Things yang dapat mengontrol dan mengoptimalkan sistem kerja alat”. Esp 32 sebagai komponen utama yang dapat menghubungkan sistem dengan aplikasi telegram. Metode yang digunakan dalam pengembangan sistem ini adalah metode observasi. Sistem ini mampu mengirimkan notifikasi yang akan dikirim ke pengguna melalui aplikasi telegram. Pengguna juga dapat mengontrol perintah yang dikirim dari aplikasi telegram untuk menggerakan motor servo yang menjadi penggerak untuk membuka dan menutup pintu kotak penerima paket agar paket dapat disimpan didalamnya. Berdasarkan hasil penelitian yang sudah diuji, modul Esp32 dapat terkoneksi dengan jaringan internet pada jarak 10 meter sampai 15 meter, dan sensor ultrasonik dapat membaca benda dengan jarak 300 cm, sedangkan motor servo mampu berputar pada 180 derajat kemudian sensor infrared dapat mendeteksi keberadaan barang.Kata kunci: Esp32, IoT, Paket, Servo, Telegram, Infrared, Ultrasonik.
Sistem Informasi Buku Tamu Kantor Desa Aikmel Timur Berbasis Web
Authors: Jamila Husnatun , Saiful Muhammad , Nurhidayati
Published: February 2025

Pengelolaan data tamu di Kantor Desa Aikmel Timur sebelumnya dilakukan secara manual, yang sering kali menyebabkan keterlambatan, kesalahan pencatatan, dan kesulitan dalam pencarian data historis. Untuk mengatasi masalah tersebut, dikembangkan sistem informasi buku tamu berbasis website yang dirancang untuk mencatat dan mengelola data tamu secara digital. Sistem ini dibangun menggunakan metode pengembangan perangkat lunak Waterfall, dengan tahapan analisis kebutuhan, desain, implementasi, pengujian, dan pemeliharaan. Teknologi yang digunakan meliputi HTML, CSS, dan JavaScript untuk antarmuka pengguna, PHP untuk pengolahan data, serta MySQL sebagai basis data. Fitur utama sistem mencakup pendaftaran tamu, pencarian data kunjungan, dan rekapan data kunjungan yang diekspor ke excel. Hasil pengujian menunjukkan bahwa sistem ini mampu meningkatkan kecepatan dan akurasi dalam pencatatan tamu dan mempermudah pencarian data historis. Dengan implementasi sistem informasi buku tamu berbasis website ini, Kantor Desa Aikmel Timur dapat mengelola data tamu secara lebih terorganisir, mendukung transformasi digital dalam pelayanan administrasi desa.
Absensi Kantor Desa Menggunakan Kartu Radio Frequensi Identification (RFID) Berbasis Internet of Things (IoT)
Authors: Nashori Muhammad Arif , Febri Tiara Febrianti , Gerhana Wanda , Maulana Adrian Rizal , Hamzan Ahmadi
Published: February 2025

stem absensi merupakan salah satu elemen penting dalam manajemen sumber daya manusia, termasuk di lingkungan kantor desa. Penelitian ini mengusulkan pengembangan sistem absensi di Kantor Desa Kotaraja dengan  menggunakan teknologi Radio Frequency Identification (RFID) yang terintegrasi dengan Internet of Things (IoT). Sistem ini dirancang untuk meningkatkan efisiensi, akurasi, dan transparansi pencatatan kehadiran perangkat desa. Setiap pegawai diberikan kartu RFID yang berfungsi sebagai identitas unik. Data kehadiran akan tercatat secara otomatis saat kartu RFID dipindai pada perangkat yang terhubung dengan sistem berbasis IoT. Selanjutnya, data tersebut dikirimkan ke server untuk disimpan dan dikelola secara real-time, memungkinkan pemantauan kehadiran secara langsung oleh pihak yang berwenang. Sistem ini juga dilengkapi dengan antarmuka berbasis web untuk mempermudah akses dan pelaporan data. Hasil pengujian menunjukkan bahwa sistem absensi berbasis RFID dan IoT ini mampu mengurangi kesalahan manual dalam pencatatan, mempermudah pengelolaan data kehadiran, dan meningkatkan akuntabilitas pegawai kantor desa.
PENGARUH FILTRASI DENGAN ALIRAN UPFLOW GUNA MEREDUKSI KANDUNGAN PENCEMAR PADA LIMBAH PENCUCIAN KENDARAAN
Authors: Imam Asari  , Hartini Husnayati , Iman Darmawan Muhammad
Published: February 2025

Air limbah pencucian kendaraan dapat mencemari lingkungan jika langsung dibuang ke badan air. Air sisa buangan limbah pencucian kendaraan banyak mengadung zat berbahaya yang dapat menurunkan kualitas lingkungan. Zat pencemar yang terkandung dapat berupa surfaktan anionik (deterjen), Total Suspended Solid (TSS), Chemical Oxygen Demand (COD), Fosfat, Minyak dan Lemak. Limbah cair pencucian kendaraan perlu diolah terlebih dahulu sebelum dibuang ke lingkungan atau badan air. Salah satu metode pengolahan air limbah yaitu dengan sistem filtrasi aliran upflow. Penelitian ini bertujuan untuk mengetahui efektifitas metode filtrasi arah aliran upflow dengan tiga kombinasi susunan media dalam mereduksi kandungan Surfaktan (deterjen), Chemical Oxygen Demand (COD) dan pH berdasarkan Permen LH No. 5 Tahun 2014. Penelitian ini merupakan penelitian eksperimen dengan analisis deskriptif kuantitatif. Menganalisis kualitas air limbah pencucian kendaraan sebelum dan sesudah pengolahan menggunakan filtrasi upflow dengan 3 kombinasi yaitu AZP, PAZ, dan ZAP. Hasil dari penelitian ini yaitu pengolahan air limbah pencucian kendaraan menggunakan metode filtrasi aliran upflow dengan media filter batu zeolite, karbon aktif, pasir silika dan spons berpengaruh terhadap penurunan kadar pH, COD dan Surfaktan. Penurunan kadar pH dengan tingkat penurunan mencapai 15,35% dengan nilai tertinggi pada kombinasi ZAP mencapai 19,15%, COD dengan tingkat penurunan yaitu 89,07% dengan nilai tertinggi pada kombinasi ZAP mencapai 89,34%, dan penurunan Surfaktan dengan tingkat penurunan yaitu 70,72 % dengan nilai tertinggi pada kombinasi ZAP mencapai 72,32%. Dari nilai parameter - parameter pada hasil olahan, nilai pH dan COD sudah memenuhi standar baku mutu sedangkan Surfaktan belum memenuhi standar baku mutu hasil penurunan rata - rata 10,37 mg/L dari 3 mg/L menurut Permen LH No.5 Tahun 2014 tentang Baku Mutu Limbah Cair bagi Kegiatan Industri Sabun, Deterjen dan Produk Minyak Nabati.
KESESUAIAN KUALITAS AIR LAUT UNTUK BUDIDAYA LOBSTER AKIBAT LIMBAH DOMESTIK DI PERAIRAN TELUK JOR KECAMATAN JEROWARU
Authors: Nora winardi Lalu , Muliadiputra Agus , Haeruddin Haeruddin
Published: February 2025

Teluk Jor merupakan area budidaya perikanan, dengan sistem KJA sebagai teknologi utama. Namun, peningkatan jumlah penduduk dan aktivitas domestik di sekitar Teluk Jor berpotensi menyebabkan pencemaran limbah domestik. Limbah ini mengandung berbagai zat berbahaya yang dapat merusak ekosistem laut dan mengancam keberlanjutan budidaya lobster di kawasan ini. Tujuan penelitian ini untuk mengetahui kesesuaian kualitas air laut akibat limbah domestik di perairan Teluk Jor untuk budidaya Lobster sistem KJA pada parameter fisika, dan kimia akibat pencemaran limbah domestik. Metode yang digunakan ialah metode survei, sedangkan untuk pengambilan data dilakukan secara purposive sampling. Analisis data untuk kualitas air dilakukan dengan menggunakan PP RI NO.22 Tahun 2021 tentang baku mutu air laut untuk biota laut dan SNI 8116:2015 tentang peryaratan kualitas air untuk budidaya Lobster. Hasil kesesuaian kualitas air di perairan Teluk Jor untuk budidaya lobster sistem KJA menunjukkan bahwa secara umum kondisi air masih mendukung budidaya lobster. Namun, terdapat beberapa parameter yang belum sesuai. Keberadaan sampah nilai kecerahan dan DO yang rendah di stasiun dekat permukiman mengindikasikan adanya pencemaran ringan, kemungkinan akibat limbah domestik. Selain itu, kadar minyak dan lemak yang melebihi baku mutu di sekitar pemukiman memperkuat dugaan adanya pengaruh limbah domestik terhadap kualitas air di kawasan tersebut..
Best approximate inversion formulas for Quantum Bessel multiplier operators
Authors:   Laboratory of Fundamental and Applied Mathematics, Department of Mathematics and Informatics, Faculty of Sciences Ain Chock, University of Hassan II, B.P 5366 Maarif, Casablanca, Morocco, Chana Ahmed , Akhlidj Abdellatif ,   Laboratory of Fundamental and Applied Mathematics, Department of Mathematics and Informatics, Faculty of Sciences Ain Chock, University of Hassan II, B.P 5366 Maarif, Casablanca, Morocco
Published: February 2025

Using the \(q\)-Jackson integral and some elements of the \(q\)-harmonic analysis associated with the generalized q-Bessel operator for fixed \(0<q<1\), we introduce the generalized q-Bessel multiplier operators and we give some new results related to these operators as Plancherel’s, Calderón's reproducing formulas and Heisenberg's, Donoho-Stark's uncertainty principles. Next, using the theory of reproducing kernels we give best estimates and an integral representation of the extremal functions related to these operators on weighted Sobolev spaces.
Advanced Polymer Composite Materials: Fabrication Techniques, Mechanics and Diverse Applications
Authors: Alipoori Saeideh
Published: February 2025

Advanced polymer composite materials have attracted significant attention across a broad range of industries, such as aerospace and automotive, electronics, biomedical fields, and construction, due to their superior mechanical properties, thermal stability, and lightweight nature. These materials are prepared by combining polymer with reinforcing agents such as fibers, nanoparticles, or fillers, which increase properties like tensile strength, durability, and stretchability. Fabrication techniques of polymer composites, ranging from traditional methods such as injection molding and extrusion to modern techniques like additive manufacturing, help to have precise control over material properties to enhance the performance of nanomaterials like carbon fibers, carbon nanotubes, and graphene. The mechanical performance of polymer composites, such as tensile strength, stiffness, and fatigue resistance, is closely related to the type of reinforcement, polymer, and processing technique. For future research and more development of polymer composites, sustainability, recyclability, and large-scale production are the remaining critical challenges.
Decadal Trends in Biopolymer Production and Utilization: A Comprehensive Review
Authors: Bugarčić Mladen , Jovanović Aleksandar , Petrović Jelena , Mišić Milica , Sokić Miroslav , Milivojević Milan
Published: February 2025

This article provides a comprehensive review of recent advancements in biopolymer technology, focusing on their environmental and economic impact across various industries. Key biopolymers discussed include cellulose, lignin, starch, algal polysaccharides, and protein-based polymers such as whey and casein, alongside essential biopolymers like chitin, chitosan, pectin, guar gum, xanthan gum, natural polyesters, and polyamides. These biopolymers have experienced rising demand due to their renewable nature and biodegradability, supporting the shift toward sustainable materials in sectors such as food technology, biomedical applications, and eco-friendly packaging.
By synthesizing insights from industry reports, market trends, and scientific studies, the review highlights the growth trajectory, environmental benefits, and economic viability of biopolymers. The analysis emphasizes how these materials contribute to reducing fossil fuel dependency and waste, positioning them as critical components of the green economy. Furthermore, it addresses challenges such as production costs and scalability, advocating for ongoing research and technological development to maximize their potential. This work underscores the increasingly vital role of biopolymers in sustainable development and sets the stage for further innovation in the field.
A Study on the Current Situation of Rural Primary School Students' Perception of Teacher Support: An Analysis Based on Professional Knowledge, Affection and Reliability
Authors: Zhou Yian , Liu Siyu , Zhong Weiyi , Zhang Lulu , Lai Yuge , Du Baiyan
Published: February 2025

This study investigated the current situation of rural primary school students' perception of teacher support, involving 124 rural primary school students. Based on the results, strategies to improve rural primary school students' perception of teacher support were proposed. The results show that rural primary school students have a higher perception of teacher support from older and more experienced rural teachers than that from younger and less experienced rural teachers. And they have a relatively high perception of the three sub - factors of professional knowledge, affection and reliability, with the highest perception of professional knowledge. The findings of this study provide certain strategies for enhancing rural primary school students' perception of rural teacher support.