bluuebunny/crossref_metadata_2025 huggingface dataset:
Geometrically Investigating the Effect of Maxillary Posterior Impaction on Mandible Autorotation in Patients with Anterior Openbite Using Proplan CMF Software on Available CT Scans
Authors: Mahmoudi Hamed , MalekHosseini Nima , Tehrani Mona Mohajeri , Zadeh Samad Samadi
Published: November 2024

Background: Posterior impaction of the maxilla leads to spontaneous rotation of the mandible and these rotations are often accompanied by soft tissue and skeletal changes. The present research aims to determine the effects of posterior impaction of the maxilla on mandible's Autorotation in patients with anterior open bite.
Methods and material:  Using a 3D reconstructed model of 25 patients with anterior open bites, this descriptive study is conducted. The construction model of the posterior segment of the mandible design was subjected to 2, 3, 5, and 7 mm posterior impaction of the maxilla around the ANS axis without any mandibular intervention, using the available CT scan and ProPlan CMF software. Following this, the autorotation and anterior open bite correction were assessed. A basic linear regression test was used to examine the effects of various variables on the anterior open bite closure at various impaction rates.
Results: The rise, in impact rate led to an increase in the byte closure rate. With 2, 3, 5 and 7 mm posterior impaction of the maxilla, the bite closure was not significantly affected by maxilla length, mandible length, U1-SN angle, ANS-PNS angle with the maxillary occlusal plane, or mandibular incisor angle with the mandibular plane. Nevertheless, during the 5 mm posterior maxillary impaction procedure, there was a 0.25 mm increase in the open bite closure for every 1 degree increase in IMPA; this number is statistically significant. (p<0.001).
Conclusion: The amount of bite closure increased along with the posterior impaction of the maxilla. All other variables did not significantly affect bite closure rate, with the exception of the IMPA variable in 5 mm impactions.
Integrating Quality at Source into Supplier Management: A Pathway to Cost Efficiency and Regulatory Compliance
Authors: Vaghani Binitkumar M
Published: November 2024

In an increasingly competitive global market, organizations are seeking to enhance both cost efficiency and regulatory compliance in their supply chains. This paper explores the integration of Quality at Source (Q@S) into supplier management as a strategic pathway to achieve these goals. Quality at Source is a proactive approach that emphasizes defect prevention and quality assurance at the earliest stages of production, specifically at the supplier level. By embedding Q@S principles within supplier management, companies can not only reduce the financial burden associated with defect detection and correction but also mitigate risks associated with non-compliance with industry regulations.
The study identifies key benefits of Q@S, including cost savings through reduced waste, improved production efficiency, and minimized need for extensive downstream quality control. Additionally, it demonstrates how Q@S facilitates regulatory compliance by ensuring that quality standards are met consistently, thus simplifying audits and reducing the likelihood of penalties. The paper details a framework for Q@S implementation, covering essential steps such as supplier selection, establishing quality metrics, conducting regular audits, and fostering a culture of continuous improvement among suppliers.
Through a combination of case studies and data-driven insights, the paper illustrates the tangible benefits of Q@S integration. Real-world examples showcase successful applications of Q@S across different industries, highlighting significant cost reductions and enhanced compliance. Furthermore, this research discusses the challenges companies may face, such as initial investment costs and resistance to change from suppliers, and provides strategies for overcoming these barriers.
The paper concludes by examining the role of advanced digital technologies—such as artificial intelligence (AI), Internet of Things (IoT), and blockchain—in furthering Q@S initiatives. These technologies enable real-time monitoring and data transparency, enhancing the capacity of organizations to track supplier performance and maintain quality standards. The findings underscore the importance of Quality at Source as an essential component of modern supplier management, providing a roadmap for organizations aiming to achieve cost-effective, compliant, and sustainable supply chains.
Investigation into the Accumulated Fatigue Damage in Riveted Connections in Steel Bridges using Advanced Numerical Techniques
Authors: Negus R , Bertolesi E , Novelli V , Cashell K
Published: November 2024

Fatigue in traditional riveted steel bridges is being observed at increasing frequency due to an increase in both the volume and mass of expected traffic. The financial ramifications of retrofitting, repairing and insuring bridges from this damage is vast, and many rail networks suffer from inadequate funding to address these issues. In the financial year 2019-2020 it was estimated that the cost of maintenance on the British rail network was £1.488 billion, and arguments for safety and sustainability can also be emphasised because of this form of damage. With comparable increases in volume and frequency of rail traffic, it is not inconceivable to see comparable damage occurring in contemporary infrastructure soon. This paper investigates the validity of using traditional numerical techniques to model a complex system of rivets and structural members, with the future aim of utilising the more advanced eXtended Finite Element Method (XFEM) to analyse the mechanism behind fatigue propagation in the riveted connections of steel rail bridges, addressing the effect of loading conditions and rivet geometry on crack nucleation, propagation, and failure.
The Effect of Curing Temperature and Supplementary Cementitious Materials on Chloride Permeability of Self-Compacting Concrete
Authors: Degani I , Maddalena R , Kulasegaram S
Published: November 2024

In recent years, self-compacting concrete (SCC) has gained popularity due to its high flowability and reduced energy demand in construction. With a notable paste content, SCC undergoes intensified hydration reactions, resulting in a distinct microstructure compared to traditional concrete. When exposed to varying curing temperatures, SCC exhibits unique mechanical traits. However, the influence of curing temperature on SCC with supplementary cementitious materials (SCMs) remains underexplored. This study evaluates SCC performance with diverse SCMs, substituting specific volume fractions of cement with 10% silica fume (SF) and 40% fly ash (FA), under different curing temperatures. Emphasis lies on assessing the durability of these compositions for concrete structures. For evaluating critical chloride permeability, high-strength SCC specimens were cured underwater at 10 °C, 20 °C, and 50 °C. Incorporating supplementary cementitious materials (SCMs) enhances SCC's resistance to chloride permeability and mitigates the adverse effects of elevated curing temperatures. The study showcased remarkable enhancements in concrete performance with the addition of silica fume (SF) and fly ash (FA) compared to plain SCC. Particularly, at 10 °C, SCC with SF exhibited a significant increase rate of 78.89% over SCC without SF. These results underscore the pivotal role of SF and FA in bolstering the electrical resistance of SCC under different curing temperatures.
Modelling of Temperature Distribution in Orthogonal Machining
Authors: Zheng J , Bhaduri D , Brousseau E
Published: November 2024

Heat generation during machining has a profound effect on the performance of cutting tools, tool life, machinability of materials, and workpiece surface integrity. Thus, measurement and monitoring of cutting temperature is necessary for tool condition monitoring as well as to achieve the targeted surface and mechanical integrity of the produced parts. However, experimental measurement of cutting temperature could often be challenging, time consuming and cost intensive, and hence prediction of temperature distribution at the machining zone via modelling is imperative. This study verifies and validates prior analytical models from the literature to generate the temperature distribution patterns within the cutting tool, chip, and workpiece during macro-machining. The temperature fields at the shear zone (chip-workpiece interface) and at the friction zone (chip-tool interface) are generated using MATLAB software. The data closely matches with the range of cutting zone temperature found in the literature, with only ~6-7% deviation.
Problemas frecuentes y casos prácticos en los títulos valores
Authors: Saavedra Gil Rony
Published: November 2024

La presente investigación consiste en analizar desde los principios jurídicos de los títulos valores, los errores frecuentes que se originan al momento de la emisión y posterior cobro de los títulos valores. Errores que encontramos al firmar el título valor, al momento de colocar el número de DNI en el título valor, respecto al importe del título valor, cuando se altera el título valor, cuando el título valor es incompleto, como la responsabilidad solidaria cambiaria, los gravámenes y afectaciones sobre el título valor, la irreinvindicabilidad, entre otros. Es decir, que la obligación sea cierta, expresa, exigible, líquida, ilíquida y que el objeto de la prestación sea de dar, hacer o no hacer. Todo ello, con el objetivo de detectar a tiempo dichos errores en la emisión de los títulos valores, para que estos obtengan los efectos cambiarios correspondientes.
Impugnación de acuerdos negativos. Comentario a la Sentencia núm. 218/2024 de la Audiencia de Valencia de 24 de septiembre
Authors: Pastor Martínez Eduardo , Martorell Zulueta Purificación
Published: November 2024

El objeto de este trabajo es la presentación de la reciente Sentencia de la Audiencia Provincial de Valencia núm. 218 de 24 de septiembre de 2024 en la que, con análisis de la doctrina y jurisprudencia sobre la materia, se aborda la impugnación de los denominados acuerdos negativos en el marco de las sociedades de capital, y, en particular, el alcance de las resoluciones de los Tribunales desde la perspectiva del complemento, o no, de la voluntad societaria. Estas notas se enmarcan en el contexto de otros comentarios doctrinales de sentencias sobre impugnación de acuerdos negativos (como el de la de la Audiencia de Madrid de 24 de junio de 2022, o el de la dictada por la Corte di Cassazione italiana de 22 de marzo de 2024) con la finalidad de poner de relieve las aportaciones judiciales sobre la cuestión.
Los principios reparadores de la imposición forzosa en los planes de reestructuración y la libre competencia
Authors: Sanjuán y Muñoz Enrique
Published: November 2024

El presente trabajo analiza las reglas y principios aplicables a los planes de reestructuración desde la doble perspectiva de los planes que se imponen a través de la regla CCCD (Cross-Class Cram-Down) y aquellos que se pueden considerar consensuales en tanto no suponen una afectación interclases dentro de dichos planes. Asimismo, se analiza la posibilidad de establecer un sistema que permita un control de dichas reglas bien de oficio o bien a petición de parte y la eficacia que, con uno, otro o sistemas mixtos se pueda alcanzar. Un defectuoso control o un descontrol de los mismos podría afectar, en el ámbito analizado, a la libre competencia y por tanto favorecer indebidamente a unas respecto de otras tanto en situación de crisis empresarial y reestructuración como respecto de aquellas que no estén en dicha situación.
La prohibición de asistencia financiera en las sociedades de capital: su incumplimiento a la luz de la actual jurisprudencia en España
Authors: De Vivero de Porras Carmen
Published: November 2024

La prohibición de asistencia financiera por parte de las sociedades de capital a un tercero para adquirir sus propias acciones o participaciones (así como de otra sociedad del grupo o dominante) contenida en los artículos 143.2 y 150.1 ambos de la LSC, ha dado lugar a muy diversos pronunciamientos judiciales. La casuística con la que nos encontramos diariamente es diversa y plural, con lo que en numerosas ocasiones se antoja complicado proteger adecuadamente los intereses en juego a la vista de los negocios a los que puede afectar la asistencia prohibida. En los últimos años, se ha impuesto por el Tribunal Supremo en España, una interpretación restrictiva de la nulidad, así como —declarada la misma— si esta puede o debe contagiar a otros negocios e incluso a la propia adquisición que el Tribunal Supremo niega. En el presente trabajo se lleva a cabo un análisis de la doctrina del Alto Tribunal y de la extensión o no de la nulidad de la asistencia prohibida, al negocio de adquisición de las acciones o participaciones propias, partiendo de la finalidad patrimonial o financiera (en la que se basa el alto Tribunal) y/o del régimen de control que esa asistencia puede otorgar en la sociedad a quien la obtiene.
The Wealth Effect in WTO Dispute Settlements: Analysing International Economic Law as a Normal Good
Authors: Raut Shilpa Samplonis , Oviedo Alexis
Published: November 2024

The objective of the article is to introduce a theoretical endeavor aimed at evaluating the potential validity of empirical results within the realm of economic theory. The existing literature and empirical evidence indicate that wealthier participants within the World Trade Organization exhibit a propensity for regular engagement with dispute settlement mechanisms in the field of international economic law. This uneven pattern of utilization of the dispute settlement mechanism implies that the global institution, serving as a provider of global public goods within an economic context, assumes attributes akin to a normal good. Accordingly, the article attempts to answer the question: What theoretical basis explains why wealthier countries in the World Trade Organisation engage more frequently in dispute settlement mechanisms under international economic law, and how does this reflect the characteristics of international economic law as a normal good in the context of global public goods? This article employs a methodology that combines literature synthesis with pay-off matrix analysis to examine the dynamics of dispute settlement among member countries of the World Trade Organisation with varying economic power. This methodological approach seeks to foster comprehension of the empirical patterns. The analysis finds that the discrete nature of the global public good results in its normal characteristics. The article concludes that addressing the disparities in engagement with dispute settlement mechanisms is essential for the World Trade Organisation to meet the demands of its member countries and effectively provide global public goods.
Development of a Cassava Grating Machine
Authors: Aliemeke Blessing Ngozi Goodluck , Iyore Aisosa Tommy
Published: November 2024

Developing of a cassava grating machine is presented. This is a great boost in the development of local content and reduction of wastage in cassava produce in Africa. The use of internal combustion engine in powering the cassava grating machine makes the study unique as it goes a long way in eliminating the undue stress involved manual grating of cassava tubers. The developed machine is made up of components such as hopper, pulley belts, grating unit, internal combustion engine and shaft. Scientific formulae were employed to aid the design of the cassava grating machine. A detailed graphical modeling was done to serve as a guide for the fabrication of the machine. The developed grating machine had a volumetric capacity of hopper to be 50272000 mm3. A power capacity of 1.715 KW was delivered to the solid shaft of 27.05 mm diameter to grate the peeled cassava tubers at a designed torque of 10.23 Nm.
Mechanical Performance Enhancement of Alkali-Activated Composites Using Synthetic Fibers with Metazeolite and Aluminum Sludge-Based Recycled Concrete Aggregates
Authors: Aygün Beyza Fahriye , Uysal Mücteba , Çingi Ramazan
Published: November 2024

This study examines the substantial enhancement in the performance of alkali-activated composites (AACs) produced from a distinctive combination of metazeolite (MZ) and slag (S), reinforced with synthetic fibers, and augmented with aluminum sludge (AS) and recycled concrete aggregate (RCA). The composites were subjected to activation through the use of a specific sodium hydroxide (NaOH) and sodium silicate (Na₂SiO₃) blend in a 2:1 ratio, with an activator-to-binder ratio of 0.95. Through a process of experimentation, the research team identified an optimal mix by varying the molarities of sodium hydroxide (NaOH) between 8M and 14M and the ratios of metazeolite to slag between 25% and 100%. The aforementioned mixture, comprising 50% MZ and 50% S, was activated with 12M NaOH and enhanced with 30% aluminum sludge, exhibiting remarkable strength characteristics. Furthermore, the incorporation of synthetic fibres, including polyethylene (PEF), polyamide (PAF), and basalt fibers (BF), resulted in a notable enhancement of the material's performance. It is noteworthy that the addition of basalt fibers at a concentration of 0.5% resulted in a 7% increase in compressive strength and a 24% improvement in flexural strength. This pioneering research illuminates the transformative potential of MZ-S-based AACs, particularly when combined with AS and BF, paving the way for the development of sustainable construction materials that meet contemporary performance and environmental standards.
Identités et paiements numériques – Opportunités et défis pour l’administration fiscale
Authors: Santoro Fabrizio , Prichard Wilson , Mascagni Giulia
Published: November 2024

Les administrations fiscales en Afrique et, plus largement, dans les pays à faible revenu (PFR), investissent de plus en plus dans les technologies numériques avancées, dans le but de mettre en place des systèmes fiscaux plus efficaces et plus efficients, fondés sur des règles. Ces efforts s’inscrivent dans le cadre d’une initiative plus large menée par les gouvernements en faveur de l’administration en ligne et de la mise en place d’infrastructures publiques numériques (IPN). Bien que ces efforts de numérisation de l’administration fiscale soient multiples et touchent tous les aspects de l’administration, ces dernières années ont vu une attention croissante aux impacts potentiels des systèmes d’identification numérique (SIN) et des paiements numériques des commerçants (PNC), qui sont tous deux étroitement liés à des discussions plus larges sur le potentiel de l’IPN pour renforcer les résultats en matière de développement. Cette attention accrue est motivée par l’espoir que la mise en place de ces systèmes puisse contribuer à des améliorations significatives des systèmes fiscaux et de la perception des recettes dans le cadre des efforts plus larges et ambitieux de numérisation entrepris par les gouvernements africains (Banque mondiale 2016 ; FMI 2020).
ФРАЗЕОЛОГИЗМИ СА ЛЕКСЕМОМ СУНЦЕ У ИТАЛИЈАНСКОМ И СРПСКОМ ЈЕЗИКУ
Authors: Иланковић Сара
Published: November 2024

Рад се бави анализом фразеологизама српског и италијанског језика који су посматрани уз помоћ упоредне анализе. У раду су анализиране 34 фразеолошке јединице које садрже лексему сунце / il sole. Фразеологизми који се изучавају су устаљене, унапред задате језичке јединице са целовитим семантичким садржајем и изразитом експресивношћу. У раду су садржани само фразеологизми у ужем смислу. У оба језика фразеологизми су одређени као спој од неколико речи које дефинишу одређену ситуацију, чињеницу или догађај. Приказана је слика стварности ових језика и концептуализација света. Приликом анализе фразеолошких јединица, у раду су коришћене компаративна и лингвокултуролошка анализа. Компаративна анализа служи за утврђивање степена структурно-семантичне еквивалентности. Разлике на фразеолошком плану могу се објаснити узимањем у обзир генетске сродности, културног наслеђа и културно-језичких контаката. Овим радом желимо да укажемо на сличности и разлике у перцепцији Сунца и да тиме прикажемо културолошке и језичке сличности и разлике у српском и италијанском језику.
PRIMENA INFORMACIONO-KOMUNIKACIONIH TEHNOLOGIJA U NASTAVI RUMUNSKOG I ITALIJANSKOG JEZIKA NA FILOZOFSKOM FAKULTETU UNIVERZITETA U NOVOM SADU
Authors: Ivanić Ivana , Blatešić Aleksandra
Published: November 2024

Nove tehnologije donose promene u obrazovanju, nudeći mogućnosti za interaktivno učenje i inovativne metode poučavanja. Cilj ovog rada je da posredstvom ankete ispita stavove studenata prema korišćenju informacionih i komunikacionih tehnologija (IKT) u nastavi rumunskog i italijanskog jezika na Filozofskom fakultetu Univerziteta u Novom Sadu. Fokus istraživanja je na proceni upotrebe i efikasnosti digitalnih alata u nastavi, kao i na identifikaciji problema sa kojima se studenti suočavaju tokom učenja. S obzirom na to da nijedan ispitanik nije imao negativno mišljenje o upotrebi modernih tehnologija u nastavi jezika, prikupljeni podaci pružili su uvid u to kako i u kojoj meri one doprinose razvoju jezičkih veština i motivaciji studenata. Za većinu anketiranih studenata časovi na kojima se koriste nove tehnologije su bolje pripremljeni i organizovani, a naročito pozitivan učinak imaju multimedijalni sadržaji (video, audio, prezentacije). Benefiti tehnologije pokazali su se ne samo u oblasti usvajanja jezika, već i kulture Rumuna i Italijana, te je preko polovine anketiranih studenata ocenilo najvišom ocenom upravo razvoj lingvističkih i kulturoloških kompetencija. S druge strane 63,8% studenata, izjavilo je da digitalni alati ne mogu u potpunosti zameniti tradicionalnu nastavu, dok su mišljenja vrlo podeljena i u vezi sa temom smanjenja stresa prilikom onlajn učenja. S obzirom na to da je potrebno konstantno pratiti i analizirati ove procese kako bi se unapredio kvalitet nastave, rezultati ovog istraživanja mogu poslužiti kao osnova za dalji razvoj i prilagođavanje obrazovnih metoda potrebama savremenih studenata.
p16 expression in patient with Loop Electrosurgical Excision Procedure (LEEP)
Authors: Paskarani Putu Erika , Winata I Gede Sastra , Sitohang Elisa Laura Oktrinita , Felyanto Felyanto , Yuliantini Sang Ayu Putu
Published: November 2024

HIGHLIGHTS

Clinicopathologic characteristic of patient with LEEP procedures dominated by women above 35 years old, with total parity less than 3 and without history of contraceptive usage.
The p16 expression analyzed by immunohistochemistry technique. The positive and negative reactivity of p16 ratio was 3:5 on LEEP specimen which microscopically appear as chronic cervicitis, low-grade and high-grade squamous intraepithelial lesion.

 
ABSTRACT
Objective: The study aim was to reveal p16 expression with the clinicopathological characteristics of patients who underwent cervical biopsy using the Loop electrosurgical procedure (LEEP) at Udayana University Hospital for the period 2020 – 2023.
Materials and Methods: The research was conducted at Anatomic Pathology Laboratory of Udayana University Hospital, Denpasar, Bali, Indonesia. The samples were selected based on inclusion criteria such as the formalin fixed paraffin embedded (FFPE) sample from positive IVA patient and continue for LEEP procedure. Otherwise, the exclusion criteria were moldy FFPE sample and incomplete clinical data. Then, p16 immunostaining procedure was carried out manually. The interpretation of p16 results was analyzed using SPSS software, version 25 by International Business Machines (IBM) Corporation.
Results: The positive p16 expression was revealed in 12 samples (38.7%), in contrast the negative staining appeared in 19 samples (61.3%). Unfortunately, p16 expression was not significant statistically based on age, parity, and contraceptive history, with p-values of 1.00, 0.45, and 0.65, respectively. Meanwhile, a statistically significant association was found between p16 expression and histopathologic diagnostic (p = 0.02, 95% CI 1.4 – 38.3). In addition, 22.2% of the variation of p16 expression based on multivariate analysis demonstrating a significant correlation (p = 0.01).
Conclusion: p16 expression with histopathology diagnostic characteristic in patient who underwent Loop Electrosurgical Excision Procedure (LEEP) was found statistically significant. Moreover, clinical application of p16 in daily practice should be performed with consideration especially for pre-cancer lesion in LEEP biopsy specimen procedure and clinicopathological approach is essential.
Collagen-1 and elastin expression in cervical tissue: A comparison across cervical elongation, pelvic organ prolapse, and combined conditions
Authors: Widyasari Anis , Hardianto Gatut , Kusumastuti Etty Hari , Kurniawati Eighty Mardiyan
Published: November 2024

HIGHLIGHTS

Pathogenesis of cervical elongation is still limited, including the histological and molecular differences between a cervical elongation and a normal cervix.
The expression of collagen-1 level in the cervical elongation group was stronger compared to the cervical elongation with POP and control group.

 
ABSTRACT
Objective: This study aimed to assess differences in the expression of Collagen-1 and Elastin in cervical tissues among patients with Cervical Elongation (CE), Pelvic Organ Prolapse (POP), a combination of CE with POP, and those without either condition.
Materials and Methods: An analytical study with a cross-sectional design was conducted, using immunohistochemistry (IHC) to analyze cervical tissue samples preserved in paraffin blocks. Patient groups included those diagnosed with CE, POP, CE combined with POP, and a control group without CE or POP. All participants underwent surgery between January 2021 and April 2023. IHC was used to measure the expression levels of Collagen-1 and Elastin in each tissue sample. Observations were made under 400x magnification, focusing on five randomly selected visual-field areas in each sample to determine the area fraction. Two experienced pathologists conducted the analyses in a blinded manner to ensure objective evaluation.
Results: Statistical analysis using the Kruskal-Wallis test revealed significant differences in the expression of Collagen-1 across the four groups (CE, POP, CE with POP, and control). Patients with CE showed a higher expression of Collagen-1 than those with CE and POP combined, as well as the control group. However, no significant differences in Elastin expression were observed among the groups.
Conclusion: Collagen-1 expression differs significantly across patients with CE, POP, and CE combined with POP, suggesting a distinct role in cervical tissue remodeling in these conditions. Conversely, Elastin expression was consistent across all groups, indicating that it may not play a differentiating role in these pathologies. These findings highlight Collagen-1’s potential involvement in the structural changes associated with CE and POP.
Current preeclampsia prediction model and biomarker
Authors: Kusuma Anak Agung Ngurah Jaya
Published: November 2024

Preeclampsia (PE) is a serious hypertensive disorder that occurs during pregnancy and is often accompanied by proteinuria (excessive protein in the urine), posing significant risks to both maternal and neonatal health worldwide. PE is a leading cause of maternal and neonatal morbidity and mortality and is notably challenging to predict due to its unpredictable nature and steadily rising incidence rates globally. As a result, substantial efforts have been directed toward developing predictive models and identifying biomarkers to assess the risk and progression of PE. However, existing models vary widely in their design, methodologies, and efficacy. Current prediction models recommended by notable organizations, including the National Institute for Health and Care Excellence (NICE), the American College of Obstetricians and Gynecologists (ACOG), the Fetal Medicine Foundation (FMF), and the World Health Organization (WHO), generally involve screening based on maternal characteristics and known risk factors. These include parameters such as maternal age, body mass index (BMI), number of pregnancies and births, blood pressure, and uterine arterial pulse index (UtA-PI). Additionally, biomarkers like mean arterial pressure (MAP), UtA-PI, and the ratio of soluble fms-like tyrosine kinase-1 to placental growth factor (sFlt-1/PlGF) are employed to improve predictive accuracy. Despite the diversity of predictive models and biomarkers, there is no consensus on the optimal model for PE prediction, largely due to the limitations in comparative studies and the challenges involved in cross-study comparisons. However, literature suggests that the FMF model demonstrates superior detection capacity compared to other predictive models.
MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SMP MELALUI PENERAPAN MODEL PJBL (PROJECT- BASED LEARNING) PADA MATERI BANGUN DATAR
Authors: Baiti Nor Azizah  , Iskandar Zulkarnain  , Rahmita Noorbaiti
Published: November 2024

Selama melakukan Asistensi Mengajar di kelas VII SMPN 21 Banjarmasin, ditemukan berbagai permasalahan dalam pembelajaran Matematika khususnya pada materi bangun datar. Model pembelajaran langsung yang diterapkan belum memberikan hasil yang optimal, terutama dalam hal kemampuan pemecahan masalah. Untuk itu, diperlukan pendekatan yang lebih inovatif, salah satu model pembelajaran yang dapat meningkatkan pemahaman siswa adalah model pembelajaran Berbasis Proyek yaitu Project-Based Learning (PjBL). Penelitian ini merupakan Penelitian Tindakan Kelas (PTK) yang bertujuan untuk meningkatkan kemampuan pemecahan masalah siswa, aktivitas guru, dan aktivitas siswa selama proses pembelajaran. Subjek penelitian ini adalah siswa kelas VII D SMPN 21 Banjarmasin. Instrumen yang digunakan yaitu lembar observasi yang digunakan untuk memperoleh data aktivitas guru dan siswa serta tes berupa soal evaluasi untuk mengumpulkan data tentang keterampilan pemecahan masalah matematika siswa. Teknik analisis data yang digunakan yaitu kualitatif dan kuantitatif. Hasil yang diperoleh dari penelitian ini yaitu  pada siklus I aktivitas guru mencapai rata-rata sebesar 82,14%, aktivitas siswa sebesar 89,5% dan kemampuan pemecahan masalah siswa yang mencapai ketuntasan dengan persentase 88%. Oleh karena itu, dapat disimpulkan bahwa penerapan model PjBL efektif dalam meningkatkan kemampuan siswa dalam memecahkan masalah matematika.
During the Teaching Assistance in class VII of SMPN 21 Banjarmasin, various problems were found in learning Mathematics, especially on the material of flat shapes. The direct learning model applied has not provided optimal results, especially in terms of problem-solving skills. For this reason, a more innovative approach is needed, one of the learning models that can improve student understanding is the Project-Based Learning (PjBL) model. This research is a Classroom Action Research which aims to improve students' problem-solving skills, teacher activities, and student activities during the learning process. The subjects of this study were students of class VII D SMPN 21 Banjarmasin. Theinstruments used were observation sheets to obtain data on teacher and student activities and evaluation tests to obtain data on students' problem solving skills. The data analysis techniques used were qualitative and quantitative. The results obtained from this study are in cycle I teacher activity reached an average of 82.14%, student activity amounted to 89,5% and students' problem-solving ability reached completeness with a percentage of 88%. Thus, it can be concluded that the use of the PjBL learning model is effective in improving students' problem-solving skills.
PENGEMBANGAN MEDIA PEMBELAJARAN INTERAKTIF BERBASIS WEB PADA PEMBELAJARAN KELIPATAN DAN FAKTOR KELAS V DENGAN METODE DRILL AND PRACTICE
Authors: Hidayat Muhammad Fadil , Sukmawati Ati , Pramita Mitra
Published: November 2024

Tujuan dari penelitian ini adalah untuk membuat media pembelajaran interaktif berbasis web pada pelajaran kelipatan dan faktor kelas V menggunakan metode drill and practice, Penelitian ini juga bertujuan untuk mengevaluasi kevalidan media pembelajaran interaktif berbasis web pada pembelajaran kelipatan dan faktor dengan menggunakan uji validitas materi dan validitas media. Metode penelitian yang digunakan adalah Research and Development dan model pengembangan ADDIE yang sudah dibatasi yaitu analysis, design, development, dan evaluasi. Teknik pengumpulan data dilakukan dengan menggunakan angket validasi materi dan validasi media. Teknik analisis data yang dipakai adalah analisis statistika desktriptif. Hasil dari penelitian ini adalah media pembelajaran interaktif berbasis web untuk pembelajaran perkalian dan faktor dengan metode drill and practice yang dikembangkan dengan teknologi HTML, PHP, CSS, Bootstrap, Javascript, MySQL, Figma, CorelDRAW, 000Webhost. Penelitian ini menunjukkan bahwa media pembelajaran valid, karena perolehan hasil penyajian validasi materi sebesar 80% dengan kriteria sangat tinggi dan perolehan capaian penyajian validasi media sebesar 68% dengan kriteria tinggi. Oleh karena itu, media pembelajaran interaktif perkalian dan faktor berbasis web dengan metode drill and practice untuk siswa kelas V dinyatakan valid untuk digunakan uji coba.
The purpose of this research is to create a web-based interactive learning media on grade V multiples and factors using the drill and practice method. This research also aims to evaluate the validity of web-based interactive learning media on multiples and factors by using material validity and media validity tests. The research method used is Research and Development and the ADDIE development model which has been limited to analysis, design, development, and evaluation. Data collection techniques were carried out using material validation questionnaires and media validation. The data analysis technique used is descriptive statistical analysis. The result of this research is a web-based interactive learning media for learning multiplication and factors with drill and practice method developed with HTML, PHP, CSS, Bootstrap, Javascript, MySQL, Figma, CorelDRAW, 000Webhost technology. This study shows that the learning media is valid, because the acquisition of material validation presentation results of 80% with very high criteria and the acquisition of media validation presentation results of 68% with high criteria. Therefore, the interactive learning media of multiplication and web-based factors with the drill and practice method for grade V students is declared valid for trial use.
PENERAPAN ETNOMATEMATIKA BATIK PENDEKAR KOTA MADIUN PADA MATERI KONSEP GEOMETRI
Authors: Fadhilla Febriana Nor , Krisdiana Ika , Masfingatin Titin
Published: November 2024

Etnomatematika adalah suatu kajian untuk menjelaskan hubungan antara budaya dengan matematika. Etnomatematika menjadi salah satu solusi yang dapat diterapkan untuk memperluas sumber belajar matematika. Sumber belajar matematika yang beragam memberikan dampak positif terlaksananya proses mengajar dan hasil belajar peserta didik. Salah satu kebudayaan yang dapat dikaji dengan etnomatematika adalah batik pendekar Kota Madiun. Batik pendekar merupakan salah satu warisan budaya Kota Madiun. Penelitian ini memiliki tujuan untuk mengetahui etnomatematika khususnya konsep geometri pada batik pendekar. Penelitian kualitatif ini menggunakan pendekatan etnografi dengan pengambilan data menggunakan teknik observasi, wawancara, dan dokumentasi. Penelitian dilaksanakan di Galeri Batik Murni Madiun dengan subjek ialah pengrajin batik. Hasil penelitian diperoleh konsep matematika pada batik pendekar. Konsep matematika yang diperoleh ialah konsep geometri terkait bangun datar segitiga dan transformasi geometri berupa translasi dan refleksi. 
Ethnomatematics is a study to explain the relationship between culture and mathematics. Ethnomatematics is one of the solutions that can be applied to expand the learning resources of mathematics. Various sources of learning mathematics have a positive impact on the implementation of the teaching process and student learning outcomes. One of the cultures that can be studied with ethnomathematics is the batik pendekar of the Madiun City. Batik pendekar is one of the cultural heritages of Madiun City. This study aims to determine ethnomathematics, especially the concept of geometry in batik pendekar. This qualitative research uses an ethnographic approach with data collection using observation, interviews, and documentation techniques. The research was conducted at the Galeri Batik Murni Madiun with the subject being batik craftsmen. The research results obtained mathematical concepts in warrior batik. The mathematical concepts obtained are geometric concepts related to triangular plane shapes and geometric transformations in the form of translations and reflections.
EKSPLORASI UNSUR GEOMETRI PADA MONUMEN RINGIN CONTONG JOMBANG SEBAGAI PEMBELAJARAN ETNOMATEMATIKA
Authors: Hidayati Arina , Zuhriawan Muhammad Qoyum , Satiti Wisnu Siwi
Published: November 2024

Salah satu hal yang dapat menjadi penghubung antara pendidikan dengan budaya adalah etnomatematika. Etnomatematika dapat digunakan sebagai alat untuk mengatasi kejenuhan, menstimulasi peserta didik, memotivasi dan memberikan nuansa baru pada pembelajaran matematika. Tujuan penelitian ini adalah untuk mendeskripsikan konsep matematika yang terdapat pada Ringin Contong. Jenis penelitian yang diterapkan pada penelitian ini adalah penelitian kualitatif dengan menggunakan pendekatan etnografi. Adapun metode yang digunakan dalam penelitian ini yaitu dengan cara observasi, dokumentasi dan studi literatur. Bangunan Ringin Contong Jombang memiliki beberapa konsep geometri yaitu bentuk bangun datar dan bangun ruang sisi datar. Terdapat bangun persegi panjang pada bagian atas Ringin Contong dan pada bagian bawah berbentuk prisma segi 8, sedangkan pada menara air berbentuk prisma segi 16. Tiang-tiang penyangga yang berupa bangun balok berjumlah 8 di bagian luar dan 4 pada bagian dalam. Konsep pada bangunan Ringin Contong di atas dapat digunakan sebagai sarana untuk memperkenalkan pembelajaran matematika mengenai unsur geometri melalui budaya daerah setempat.One of the things that can be a link between education and culture is ethnomathematics. Ethnomathematics can be used as a tool to overcome boredom, stimulate learners, motivate and give new nuances to mathematics learning. The purpose of this study is to describe the mathematical concepts contained in Ringin Contong. The type of research applied to this research is qualitative research using an ethnographic approach. The methods used in this study are by observation, documentation and literature study. The Ringin Contong Jombang building has several geometric concepts, namely flat shapes and flat side spaces. There is a rectangular shape at the top of Ringin Contong and at the bottom in the form of an 8-sided prism, while the water tower is in the form of a 16-sided prism. The support poles in the form of building beams are 8 on the outside and 4 on the inside. The concept in the Ringin Contong building above can be used as a means to introduce mathematics learning about geometry elements through local culture.
PENGEMBANGAN SOAL OPEN ENDED BERBASIS ETNOMATEMATIKA BUDAYA BANJAR KALIMANTAN SELATAN PADA MATERI SISTEM PERSAMAAN LINEAR TIGA VARIABEL UNTUK KELAS X SMA/MA
Authors: Yuliana Rahmah  , Karim  , Kamaliyah
Published: November 2024

Pembelajaran matematika ialah satu diantara ilmu yang memiliki peran krusial pada keseharian kehidupan dan sebagai ilmu pengetahuan yang diajarkan untuk semua pelajar di dunia dan ada pada semua tingkatan pendidikan. Pembelajaran matematika harus didesain sedemikian rupa sampai bisa mengakomodasi beragam karakteristik pelajar seperti perkembangan kognitif. Salah satu cara untuk mencapai hal ini ialah dengan menggunakan pertanyaan terbuka ketika belajar matematika. Sifat pertanyaan terbuka memungkinkan pelajar memecahkan permasalahan melalui berbagai cara yang dipilihnya. Masalah ini sering disebut dengan istilah soal open ended. Penelitian berikut bertujuan untuk menghasilkan soal open ended berbasis etnomatematika budaya Banjar Kalimantan Selatan pada materi sistem persamaan linear tiga variabel yang valid. Metode pengembangan yang dipakai ialah tipe formative research Tessmer (1993) yang mencakup self evaluation, prototyping (one-to-one, expert review, serta small group) dan field test. Penelitian berikut dilakukan hanya sampai tahapan expert review. Penelitian berikut memperoleh dua buah soal open ended materi SPLTV yang valid. Berdasarkan hasil analisis uji validasi, diperoleh skor 3,54 sehingga soal open ended yang dibuat pada penelitian berikut bisa dikatakan valid.
Learning arithmetic is one of the sciences that has a vital part in way of life and could be a science that's learned by all understudies within the world and exists at all levels of instruction. Arithmetic learning has to be outlined in such a way that it can suit different characteristics of understudies such as cognitive advancement. One way to realize this is often the utilize of open-ended questions in science learning. The characteristics of open-ended questions permit understudies to illuminate issues in a way of their choosing. This issue is regularly alluded to as an open finished issue. This think about points to create open finished issues based on the ethnomathematics of Banjar culture, South Kalimantan on substantial three-variable straight condition framework fabric. The improvement strategy utilized is the developmental investigate sort of Tessmer (1993) which incorporates self-evaluation, prototyping (master audit, one-to-one, and little gather) and field tests. This investigate was conducted as it were until the master survey arrange. This inquire about brought about in two open-ended questions with substantial SPLTV fabric. Based on the comes about of the approval test examination, a score of 3.54 was gotten which was included within the "substantial" criteria so that the open-ended questions made in this consider might be said to be substantial.
PENGEMBANGAN VIDEO PEMBELAJARAN BERBANTUKAN POWERPOINT OPEN BROADCASTER SOFTWARE (OBS) PADA ARITMETIKA SOSIAL UNTUK SISWA KELAS VII SMP
Authors: Widiya Rahmah  , Ansori Hidayah , Amalia Rizki
Published: November 2024

Video pembelajaran adalah sarana belajar yang dapat meningkatkan pemanfaatan teknologi dalam pembelajaran. Penelitian ini bertujuan untuk mendeskripsikan proses dan hasil pengembangan video pembelajaran berbantukan powerpoint open broadcaster software (OBS) pada materi aritmetika sosial di kelas VII SMP yang valid. Berdasarkan hasil wawancara terhadap guru matematika bahwa siswa kesulitan dalam memahami materi aritmetika sosial dalam kehidupan sehari-hari, sehingga perlu adanya media pembelajaran yang efektif salah satunya video pem­belajaran. Penelitian ini termasuk dalam penelitian pengembangan dengan model 4D dengan 4 tahapan yaitu tahap pendefinisian (define), tahap perancangan (design), tahap pengembangan (develop), dan tahap penyebaran (disseminate). Namun, penelitian pengembangan ini hanya sampai pada tahap ketiga yaitu tahap pengembangan (develop). Instrumen pengumpulan data menggunakan lembar validasi yang diisi oleh validator. Uji validitas dari produk penelitian pengembangan ini dilakukan oleh validator ahli dan validator media. Hasil validasi oleh ahli materi menunjukkan bahwa video pembelajaran yang dikembangkan memperoleh rata-rata sebesar 89,95% dengan kriteria sangat valid. Kemudian, hasil validasi oleh ahli media menunjukkan bahwa video pembelajaran yang dikembangkan memperoleh nilai rata-rata keseluruhan aspek sebesar 84,95% dengan kriteria sangat valid. Sehingga berdasarkan penilaian ini, dihasilkan video pembelajaran berbantukan powerpoint open broadcaster software (OBS) pada materi aritmetika sosial di kelas VII SMP yang sangat valid.
Learning videos are learning tools that can improve the use of technology in learning. This research aims to produce learning video products using Powerpoint Open Broadcaster Software (OBS) on social arithmetic material in class VII SMP that are valid. Based on the results of interviews with mathematics teachers, students have difficulty understanding social arithmetic material in everyday life, so there is a need for effective learning media, one of which is learning videos. This research is included in development research with a 4D model with four stages, namely the definition stage, design stage, development stage, disseminate stage. However, this development research only reached the third stage. The data collection instrument uses a validation sheet filled in by the validator. The validity test of this development research product was carried out by expert validators and media validators. The validation results by material experts show that the learning videos developed obtained an average of 89.95% with very valid criteria.Then, validation results by media experts showed that the learning video developed obtained an average score for all aspects of 84,95% with valid criteria. So based on this assessment, a learning video was produced using Powerpoint Open Broadcaster Software (OBS) on social arithmetic material in class VII SMP which was very valid.
PEMANFAATAN MEDIA PEMBELAJARAN MEUNJUN PADA MATERI OPERASI HITUNG PENJUMLAHAN DAN PENGURANGAN
Authors: Salsabila Amana  , Noor Hikmah  , Rizki Azzahra  , Najwa Dhiya ‘Ulhaq  , Noor Fajriah  , Iskandar Zulkarnain
Published: November 2024

Penggunaan media pembelajaran interaktif dan berkonteks lingkungan lahan basah pada pembelajaran matematika merupakan salah satu cara memvisualisasikan materi matematika yang abstrak agar mudah dipahami siswa di lingkungan lahan basah. Penelitian ini bertujuan untuk  menganalisis pengaruh media pembelajaran terhadap hasil belajar siswa. Media pembelajaran yang digunakan dalam penelitian ini adalah media meunjun (Indonesia : memancing) yang erat kaitannya dengan hobi anak-anak di lingkungan lahan basah. Proses pembelajaran dilakukan di kelas 5 SD Negeri Antasan Besar 7 Banjarmasin yang berjumlah 27 siswa. Metode penelitian yang digunakan adalah eksperimen untuk melihat hasil belajar sebelum dan sesudah menggunakan media pembelajaran meunjun. Pengumpulan data menggunakan lembar kerja siswa dan analisis data menggunakan Paired Sample T Test. Hasil penelitian ini menunjukkan bahwa media pembelajaran meunjun efektif untuk meningkatkan hasil belajar siswa pada materi operasi hitung penjumlahan dan pengurangan bilangan bulat. 
The use of interactive learning media and the context of wetland environments in mathematics learning is one way to visualize abstract mathematical material so that it is easy for students to understand in a wetland environment. This study aims to analyze the influence of learning media on student learning outcomes. The learning media used in this study is meunjun media (English: fishing) which is closely related to children's hobbies in wetland environments. The learning process was carried out in grade 5 of SD Negeri Antasan Besar 7 Banjarmasin which totaled 27 students. The research method used is an experiment to see learning outcomes before and after using meunjun learning media. Data collection using student worksheets and data analysis using Paired Sample T Test. The results of this study show that the learning media is effective in improving student learning outcomes on the material of calculating the addition and subtraction of integers.