bluuebunny/crossref_metadata_2025 huggingface dataset:
Reconocimiento y parametrización de estomas de muérdago en imágenes de microscopía en RGB
Authors: López Muñoz María Lizette , Gutiérrez Hernández David Asael , Zamudio Rodríguez Víctor Manuel , Lino Ramírez Carlos
Published: October 2024

Los estomas son poros formados por un par de células oclusivas ubicadas en la epidermis de la planta, los cuáles intervienen en el proceso de transpiración y fotosíntesis. Por otra parte, la obtención manual de características celulares mediante el análisis de imágenes de microscopia resulta ser un trabajo extenuante y prolongado. El presente artículo presenta una metodología para el reconocimiento y obtención de características de los estomas en hojas de muérdago mediante un procesamiento digital de imágenes y la implementación de una red neuronal convolucional conocida como YOLO (You Only Look Once). Se realizó una segmentación semántica de las imágenes y para ello se utilizó el modelo YOLOv8n-seg. Asimismo, se realizó el etiquetado de 510 imágenes aumentadas a través de diversas transformaciones en Roboflow para lograr un total de 779 instancias divididas en tres subconjuntos: 80% para entrenamiento, 13% para validación y 7% para prueba. Los índices de precisión y sensibilidad para la fase de entrenamiento fueron 89.32% y 96.53% respectivamente. Las características estomáticas obtenidas se calcularon con la ayuda de la librería Scikit-Image e incluyen conteo, área, perímetro, excentricidad, ancho y alto del estoma. Finalmente, luego del entrenar el modelo se llevó a cabo una prueba sobre cada uno de canales RGB de la imagen para posteriormente analizar las predicciones hechas por el algoritmo y compararlas entre sí para conocer las diferencias en los resultados obtenidos utilizando los mejores pesos encontrados en la fase de entrenamiento de la red neuronal.
Experiencias y reflexiones en evaluación de resultados de aprendizaje en ingeniería industrial caso Universidad Libre Bogotá
Authors: Meneses Velosa Sonia Lucila , Meza Ricardo , Duarte Edgar , Fuentes Ever
Published: October 2024

La introducción de los resultados de aprendizaje como un componente importante para apreciar los avances alcanzados por los alumnos en su proceso educativo, ha llevado a que los programas definan e implementes estrategias de evaluación y mejora. Más allá de la definición de resultados de aprendizaje, producto de un Assessment en Ingeniería, en Ingeniería industrial, el reto es el desarrollo de matrices e instrumentos que den cuenta del desempeño de los estudiantes en diferentes escenarios de su disciplina. Luego, al evaluar el desempeño de los alumnos, los resultados de aprendizaje promueven en la disciplina de ingeniería, un proceso centrado en el alumno. Lo cual implicá que en los espacios de aprendizaje se realicen estrategias donde el alumno se apropie de su aprendizaje con base en su contexto social, cultural e histórico. Sumado a lo anterior, el desempeño visto como un concepto de cumplimiento de objetivos o metas, con el desarrollo de competencias desde el conocer, saber hacer y desde el ser, implica que este desempeño se armonizarse a los principios y valores institucionales. Por lo tanto, la evaluación de resultados de aprendizaje debe incorporar aspectos sociales y éticos, donde el desempeño profesional no dependa íntegramente del entorno interior del profesional, implica que las estrategias deben tener instrumentos que evalúen la capacidad de trabajo en equipo, la solución de problemas éticos y de conflictos y ante todo de humanización de la práctica de la ingeniería. En este sentido el programa de ingeniería industrial de la Universidad Libre sede Bogotá desarrollo, mediante un equipo curricular, estrategias de medición de los resultados de aprendizaje con cinco instrumentos en tres niveles diferentes dentro de la malla curricular, con el fin de evaluar el desempeño inicial (línea base), intermedio y de dominio. Se evalúa el grado de cumplimiento de estos resultados de aprendizaje. Sumando a la asignación de espacios de aprendizaje donde se debe liderar y dar cuenta de este desempeño con mayor énfasis. En este artículo, se exponen la propuesta para realizar las mediciones del desempeño de los estudiantes, las estrategias que han implementado y sus resultados; esta práctica habilita la posibilidad de generar acciones de mejoramiento más efectivas y así fortalecer la calidad de los programas académicos de Ingenierías, en particular de ingeniería industrial.
Análisis de los problemas que los programas técnicos profesionales y tecnológicos presentan en un escenario de aseguramiento de la calidad y de acreditación en alta calidad y el cumplimiento de la normativa vigente
Authors: Peláez Valencia Luis , Delgado González Iván A.
Published: October 2024

La formación en programas académicos para los niveles técnico, profesional y tecnológico se encuentra en un escenario de aseguramiento de la calidad que se soporta en un marco normativo diferenciable para estos niveles de formación. Sin embargo, dicha diferencia no logra tener alcance en la evaluación específica con fines de registro calificado y acreditación en alta calidad y por consiguiente resulta difícil el reconocimiento de su propia naturaleza para que el Sistema de Aseguramiento de la Calidad (SAC) y el Sistema Nacional de Acreditación (SNA) se muestren como un dispositivo que promueve el avance en términos de calidad de estos programas, pero respetando la identidad institucional y la característica propias de cada nivel de formación. La situación descrita anteriormente ha llevado a que en Colombia se tengan datos sobre acreditación en alta calidad de programas donde un reducido porcentaje son de los niveles de formación objeto de este trabajo. Con este panorama resulta importante problematizar sobre las situaciones de orden normativo y los componentes propios de la calidad y la alta calidad que están impidiendo que los programas técnicos profesionales y tecnológicos se desarrollen en un escenario de mejoramiento continuo, respetando las características y rasgos distintivos propios de su naturaleza. Este trabajo desarrolla un escenario que triangula los datos, las acciones de mejora y los resultados para concluir con elementos de análisis con los que, de manera hipotética, se considera que los programas técnicos profesionales y tecnológicos en el campo de las tecnologías de información y comunicación y la ingeniería, industria y construcción podrán demostrar avances en el contexto de su propósito y alcance en la formación de profesionales en Colombia.
Reform and Practice of University Physics Experimental Teaching Based on OBE Concept
Authors: Si Yin , Liu Wei , Song Xiangyu , Wei Aixiang , Bai Tingguang , Liang Lirong , Xu Xingbin
Published: October 2024

Aiming at the problems of unclear teaching objectives, obsolete content, and single method in the experimental teaching of university physics at our university, we have implemented a series of reform initiatives. It mainly includes clarifying the student-centered teaching objectives, optimizing the experimental content, innovating the teaching methods, improving the assessment and evaluation system, and improving the experimental conditions [1,2]. After the implementation of the reform, the learning effectiveness of students has been significantly improved, the teaching level of teachers has been significantly enhanced, the curriculum system has been optimized, the efficiency of teaching management has been enhanced, and social recognition has been strengthened. Practice shows that the teaching reform based on the outcome-based education concept effectively improves the quality of university physics experimental teaching and lays the foundation for cultivating innovative talents.
Teaching Strategies in Business English Translation Based on Ecological Translation
Authors: Gao Fangyuan
Published: October 2024

This paper addresses the singularity of the teaching evaluation system and the limited practical teaching resources in business English translation. It proposes a diversified teaching evaluation system based on ecological translation, expands practical teaching resources, and emphasizes the importance of teaching cultural differences and strengthening ecological translation theory. This approach aims to innovate and optimize the teaching mode of business English translation, thereby improving the quality of teaching and promoting students’ deep understanding and application skills of business English. Consequently, this strategy brings new opportunities for development in the field of business English education.
Formal Integration of Decorative Elements in the Creation of Figurative Sculpture
Authors: Yu Wenzhong
Published: October 2024

Figurative sculpture and decorative elements belong to the same category of art; the development of sculpture art requires innovation and constant exploration of new development paths, while many characteristics of decorative elements can give the creation of sculpture works a variety of inspiration. This paper explores the significance of figurative sculpture and decorative elements, examining their intrinsic connections and historical practices. The study aims to uncover the potential of figurative sculpture in the creation of decorative elements, highlighting how the integration of these forms can contribute to the development of art and the creation of meaningful figurative sculptures.
Research on the Cultivation of Aesthetics among Art Students under the New Era Background
Authors: Fan Yanmeng , Liu Zhu , Guo Yong , Li Nan , Guo Zhiheng
Published: October 2024

Through understanding the history and current situation of aesthetic education in China, this paper explains some misunderstandings in the aesthetics of contemporary university art students, such as the insufficiency of aesthetic value and ability, as well as the inadequacy of students’ creativity due to traditional art education. It is also pointed out that the cultivation of core literacy of art students is a multidimensional and comprehensive process, and these problems need to be solved by schools, teachers, and students, so as to strengthen the inner aesthetic education of students and improve their aesthetic awareness and ability. Aesthetic education is not only an important part of the art classroom but also a key part of fostering students’ all-round development and enhancing their humanistic literacy. It is necessary to cultivate students’ observation, imagination, image-thinking ability, and creativity, so that they can become artistic talents with independent thinking and innovation.
Research on the Reform Strategy of University Education Management from the Perspective of Innovative Education
Authors: Gao Jie
Published: October 2024

With the advent of the knowledge economy era and the acceleration of globalization, the demand for talent in society has gradually become innovative. The traditional mode of university education management has become difficult to adapt to the requirements of the new era. Therefore, it is urgent to reform university education management from the perspective of innovative education. This article aims to explore the inherent relationship between innovative education and education management, analyze the current situation and existing problems of university education management, and propose strategies for reforming university education management, providing references for universities to cultivate innovative talents.
Research on Improvement Strategies of Psychological Training and Stage Expressiveness in Percussion Performance
Authors: Yan Yu
Published: October 2024

With the continuous development of music education, percussion, as an important form of performance, has led to growing attention to the psychological training of its performers. This study aims to explore how psychological factors in percussion performance impact stage expressiveness and to propose corresponding psychological training strategies. By analyzing relevant domestic and international literature, we found that psychological training not only enhances performers’ confidence and alleviates performance anxiety but also contributes to an overall improvement in performance quality. This study shows that methods such as emotional management and cognitive restructuring exhibit promising application potential in practice. Therefore, exploring a systematic psychological training program is significant for improving the stage expressiveness of percussion performers.
Does US Dollar Supply Trigger House Price Fluctuations? An International Comparison
Authors: Wang Zihan , Huang Yikun
Published: October 2024

Cyclical fluctuations in asset prices are closely related to the overall stability of the macroeconomy and have thus become a significant topic in academic and professional exploration. Among these fluctuations, changes in the supply of the U.S. dollar, the global reserve, and primary settlement currency have a broad and far-reaching impact on international financial markets. Since COVID-19, asset prices across various countries have shown differing trends due to fluctuations in the U.S. dollar supply. Housing prices, a key focus in asset pricing research, have been affected to varying degrees. This thesis utilizes seven house price indices from representative cities worldwide from 2020 to 2023 to compare the differential impacts across various countries using an empirical approach. The results indicate that the impact of the U.S. dollar money supply (M2) diminishes in a gradient from the U.S. to East Asia, and then to Europe.
Research on Tourism Brand Building in Shapingba District from the Perspective of Cultural and Tourism Integration: A Case Study of Sunac Cultural Tourism City
Authors: Zheng Huidan , Jiang Yanling
Published: October 2024

From the perspective of cultural and tourism integration, this paper uses Sunac Cultural Tourism City in Chongqing’s Shapingba District as a case study to explore its tourism brand-building model and provide corresponding suggestions. First, relevant literature was reviewed to understand the theoretical foundations of cultural and tourism integration, cultural tourism brands, and brand building. Then, authoritative data was collected from official websites to conduct an in-depth analysis of the area’s cultural and tourism resources. This study introduces an overview of the cultural and tourism resources in Shapingba District and analyzes the development status and brand-building situation of Sunac Cultural Tourism City. Using the SWOT analysis method and based on the theoretical foundation, this paper comprehensively evaluates the advantages, disadvantages, opportunities, and threats in the brand building of Sunac Cultural Tourism City. The aim is to offer effective suggestions for tourism brand building in the Shapingba District, thereby promoting the integration and development of the cultural and tourism industries. This research holds both theoretical and practical significance for promoting tourism brand-building and the integration of cultural and tourism industries in the Shapingba District.
Research on the Relationship Between Average Cigarette Price per Box and Government Procurement in City A Based on a Regression Model
Authors: Nie Yao , Wan Hongbo , Mao Mingming
Published: October 2024

This study aims to analyze and predict the relationship between the average price per box in the cigarette market of City A and government procurement, providing a scientific basis and support for decision-making. By reviewing relevant theories and literature, qualitative prediction methods, regression prediction models, and other related theories were explored. Through the analysis of annual cigarette sales data and government procurement data in City A, a comprehensive understanding of the development of the tobacco industry and the economic trends of tobacco companies in the county was obtained. By predicting and analyzing the average price per box of cigarette sales across different years, corresponding prediction results were derived and compared with actual sales data. The prediction results indicate that the correlation coefficient between the average price per box of cigarette sales and government procurement is 0.982, implying that government procurement accounts for 96.4% of the changes in the average price per box of cigarettes. These findings offer an in-depth exploration of the relationship between the average price per box of cigarettes in City A and government procurement, providing a scientific foundation for corporate decision-making and market operations.
Small and Medium-Sized Enterprises Digital Management Facing Difficulties and Solutions
Authors: Li Jianhui
Published: October 2024

The advent of the digital era has provided strong technical support for the high-quality development of the social economy. The integration of the social economy with Internet technology has given rise to new industries. However, the traditional development model of small and medium-sized enterprises (SMEs) is increasingly unable to meet the demands of economic growth, and digital management has gradually become a key approach for these enterprises to achieve their development goals. Currently, SMEs face challenges such as talent shortages, insufficient funds, and a lack of awareness regarding transformation. This paper will analyze the difficulties SMEs encounter in implementing digital management and explore potential development paths for their digital transformation.
AI-Driven Traffic Simulation using Unity: Implementing Finite State Machines for Adaptive NPC Behaviour
Authors: Amalia Syavira , Abidullah M. Dzawil Fadhol , Marcellino Fernanditho , Rabani Diaz Dafa , Azzahra Firna Fatima , Abdiansah Abdiansah
Published: October 2024

This research develops an AI-powered traffic simulation using the Unity Engine, leveraging finite state machines (FSM) to enable adaptive and responsive non-player characters (NPCs). The integration of FSM with advanced pathfinding algorithms, such as A*, allows NPCs to dynamically adjust their behavior based on traffic conditions, obstacles, and environmental changes. The experimental results indicate a 25% improvement in route optimization and a 30% reduction in path conflicts compared to conventional static models, demonstrating the robustness of the proposed approach. Optimized navmesh deployment further enhances navigation fluidity, ensuring efficient agent movement in high-density scenarios without compromising system performance. The findings establish the effectiveness of the FSM-driven NPC behavior in simulating realistic traffic environments, contributing both to the advancement of AI applications in game development and urban planning. By providing an interactive platform for traffic management, this simulation offers a practical tool to study congestion patterns and test intervention strategies. In addition, it improves player engagement by fostering emergent gameplay through dynamic NPC interactions. Future work could explore the integration of real-time procedural generation or multiplayer functionality to enrich simulation depth and scalability. This study provides a comprehensive framework that bridges AI-based mechanics with simulation technology, providing significant insights for researchers and practitioners in game design, artificial intelligence, and urban planning.
NAKNN: An Efficient Classification of Indonesian News Texts with Nazief-Adriani and KNN
Authors: Ansor Basirudin , Ramdani Aditya Putra , Sari Nova Christina , Al Amin Muhammad Zainudin , Solichan Achmad , Mahadewi Kilala
Published: October 2024

Internet usage in Indonesia has seen a significant increase, reaching 215.63 million users in 2022-2023, or 78.19% of the population. With the ease of internet access, digital news portals like Narasi TV have become a primary source of information for many people. However, the large number of news articles makes manual categorizing challenging. This study aims to classify Indonesian-language news documents from Narasi TV using the Nazief-Adriani algorithm for stemming and the K-Nearest Neighbor (KNN) method for classification. The text mining process begins with preprocessing, which includes case folding, tokenizing, stop-word filtering, and stemming. Using a dataset of 500 news documents, the study demonstrated that with a 90:10 data split, the average accuracy reached 93%, with the highest value being 100%. For the 80:20 data split, the average accuracy was 89%, with the highest value being 93%, and for a 70:30 data split, the average accuracy was 87%, with the highest value being 89%. In conclusion, the combination of the Nazief-Adriani algorithm and the KNN method with optimal k selection and random states obtained high accuracy, obtaining an average accuracy of 93%) in classifying Indonesian-language news documents. These results demonstrate the significant potential of text mining and classification techniques to manage digital news.
Citrate enhances resilience to chronic variable stress and has antidepressant properties in female mice
Authors:   ,   Lebanese American University -- Chouran Beirut, Sahlloul Yasmin
Published: October 2024

Major depressive disorder (MDD) is a prevalent and disabling psychiatric disorder with high prevalence among women. Available methods of treatment, including pharmacotherapy and psychotherapy, do not provide high effectiveness and are accompanied by adverse side effects. In recent years, nonpharmaceutical interventions such as exercise and healthy dietary modifications, have been suggested as novel ways of treating MDD yielding promising and non-toxic results. Exercise exerts its beneficial effects by mediating the upregulation of brain-derived neurotrophic factor (BDNF) and promoting the release of circulatory factors, including the metabolite citrate. Here we have studied the prophylactic and antidepressant effects of citrate in female mice subjected to chronic variable stress (CVS). Two different paradigms were applied, the pretreatment and post-treatment paradigms, to assess the prophylactic and antidepressant effect of citrate respectively. In the pretreatment paradigm, citrate administration began 5 days prior to and through the CVS paradigm whereas treatment commenced after the induction of depressive-like behavior in the post-treatment paradigm. Results show that citrate exerts prophylactic effect and is able to rescue depressive-like behavior and potentially ameliorate anxiety-like behavior. Upon investigating the molecular pathway of citrate’s therapeutic effect, the BDNF/TrkB pathway and epigenetic modifications in the hippocampus and nucleus accumbens (NAc) were not modulated following citrate treatment. However, citrate differentially modulated autophagy-related proteins in these regions suggest that citrate mediates its effect through the regulation of autophagy. These findings highlight the potential of citrate as a novel therapeutic and prophylactic approach for MDD in females.
Study of the effectiveness of fatty acid amides used as inhibitors of atmospheric corrosion /
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, GAIDAR S. M.
Published: October 2024

The use of anticorrosive agents increases the service life, reliability and safety of agricultural machinery. The shortage of domestic inhibitors is caused by the lack of a scientifically sound concept for their production, as well as a lack of raw materials. The authors have developed a technology for the production of fatty acid amides (FAA) from triglycerides of vegetable, animal origin or fat-containing waste. The purpose of this study was to evaluate the effectiveness of fatty acid amide used as an inhibitor of atmospheric corrosion. A comparative assessment of the protective effectiveness of FAA was determined in accordance with GOST 9.054-75 at elevated values of relative humidity and air temperature, exposure to salt mist, with constant immersion in an electrolyte and exposure to the hydrobromic acid. The authors compared preservation compositions based on FAA 16%, Avtokon LS, Kormin 50%, Rosoil 700, Kormin 30%. The protective properties of the products were studied on samples with dimensions of 50 × 50 mm made of steel grade St3. After the tests, the appearance of the samples was evaluated before and after removing the lubricant. According to the results of each experiment, the protective properties of the preservation compounds were arranged in the decreasing order. According to the results of four experiments, each composition was assigned a score characterizing the total assessment of the protective ability of the compositions according to GOST 9.407-2015. As a result of the study, the relationship between the effectiveness of preservative oils and the composition and amount of the inhibitor has been established. The effectiveness of fatty acid amides used as an inhibitor of atmospheric corrosion has been proven. Preservation oil made using 16% FAA exceeds the protective effect of analogue products in 1.1 to 2.0 times.
Assessment of the quality of the crankshaft grinding process for repair size
Authors:   Timirâzevskaâ selʹskohozâjstvennaâ akademiâ, Leonov Oleg A.
Published: October 2024

Mechanical processing of critical parts affects the quality of engine repair. The authors carried out research to assess the quality of setting for machining the crankshaft main journals of the ZMZ engine for the repair size. They studied the diameters of 20 crankshaft main journals of the ZMZ engine after machining for the repair size. The diameters were controlled by a lever clamp SR-75. The following tools were sequentially used to evaluate the quality of machining main bearing journals: a “box-and-whisker” diagram, Shewhart control charts, and a histogram. According to the “Box and Whiskers” diagram it was found that after machining for the repair size all the journals have a diameter within the machining tolerance field, but at the same time there is a scatter between the diameters of the journals of the same crankshaft. After analyzing the Shewhart control charts, it was found that the scatter values within one subgroup (crankshaft) and between the subgroups were caused by the usual reasons, and this scatter pattern can be considered random. Consequently, the technological process can be considered stable and controllable. The histogram helped to determine the probability of correctable rejects after machining of the engine journal for the repair size, equal to 1.95%, and the probability of irreparable rejects, equal to 0. The calculated reproducibility index of 0.93 indicates a significant wear of the equipment. Over time, the index will decrease and the risks of rejects will increase. The authors conclude that the quality of setting for machining crankshaft main bearing journals for the repair size is acceptable. It is desirable to regularly check the quality of machining crankshaft main journals for the repair size, consistently applying all the three tools to identify the size variation and inconsistencies, which is especially relevant for worn equipment.
WAVES IN CLASSICAL AND MODIFIED MASS-IN-MASS CHAINS
Authors: Turin Valentin , Nazritsky Ilya , Kireev Daniil , Andreev Pavel , Ilyushina Yulia
Published: October 2024

The paper considers mathematical models of acoustic metamaterials based on classical and modified (with additional harmonic interaction between neighboring internal masses) one-dimensional infinite mass-inmass chains. Equations are obtained for the acoustic and optical branches of dispersion, for the band gap width, and for the effective mass
ROLE OF PHONON ENTROPY IN FORMATION OF THE 7×7 STRUCTURE ON THE SI(111) SURFACE
Authors: Zhachuk Ruslan , Coutinho José
Published: October 2024

The relative thermodynamic stability of 3×3, 5×5, 7×7, and 9×9 structures belonging to the DAS (dimeradatom-stacking fault) family of structures on the Si(111) surface has been investigated using first-principles calculations based on density functional theory. Taking into account the phonon contribution to the surface free energy, the 5×5 structure was found to be more stable than 7×7 at low temperatures. The phase transition 7×7 → 5×5 should occur at temperatures close to the room temperature, but such a surface structure transformation during sample cooling is hindered due to the limited mobility of Si atoms at low temperatures. The results show the crucial role of phonon entropy in the formation of the 7×7 structure at elevated temperatures and the metastable nature of this structure at temperatures below room temperature.
MONTE CARLO SIMULATION OF THE INITIAL STAGES OF PLANAR GaAs NANOWIRE GROWTH ON SiOX FILMS
Authors: Mantsurova Snezhana , Shwartz Nataliya
Published: October 2024

The initial stages of self-catalyzed GaAs nanowire growth on GaAs (111)A substrates coated with SiOx films was simulated by Monte Carlo. The effect of oxide thickness on the wettability by gallium droplets was analyzed. The influence of oxide morphology and properties on the orientation of the GaAs nanowires was demonstrated.
QUANTUM CHEMICAL MODELING OF THE SURFACE MODIFICATION OF AN “ARMCHAIR” CARBON NANOTUBE WITH COBALT OXIDE
Authors: El Zanin Anton , Boroznin Sergey
Published: October 2024

In this work quantum chemical modeling of the process of attachment of cobalt oxide Co3O4 to the surface of a carbon nanotube (CNT) of the “armchair” type in three different adsorption positions was carried out. The effect of such modification on the electronic properties of the nanostructure under consideration is investigated.
FEATURES OF NEURO- AND NEUROMORPHIC PROCESSOR ARCHITECTURES
Authors: Telminov Oleg
Published: October 2024

The paper considers hardware architectures for the implementation of formal and spike neural networks.
Experimental study on immiscible and miscible dynamic characteristics of CO2 and crude oil in visual slim tube
Authors: Zhang Xing , Ma Dongchen , Zhao Ruiming , Zhang Xiaoyu , Feng Jiajia , Feng Meng , Zhang Jin
Published: October 2024

CO2 flooding for oil recovery is a dynamic process that requires further investigation of  oil-gas interface change characteristics, interfacial mass transfer processes, and oil-gas composition variation during both immiscible and miscible displacement. Understanding these factors is crucial for better comprehending their impact on CO2-enhanced oil recovery (EOR). This research used a jointly developed CO2 miscible visual flooding experimental apparatus to study the horizontal dynamic characteristics of CO2 and crude oil under different pressures and flow rates in visual slim tube. At 10 MPa, the stratification results of CO2 and crude oil indicate that the experiment is immiscible flooding. The contact angle (7.9°) between the two phases of CO2 and crude oil at the flow rate of 15 cm/min is larger than that (5.2°) at 1.5 cm/min, and the grey scale of CO2 increases at 100 cm/min. The quantity, individual content, and shape of the light and medium hydrocarbon components condensed on the inner wall of the tube vary with different flow rates. At 15 MPa, the appearance of the CO2 and crude oil transition interval proves that the experiment is miscible flooding. At different flow rates, the inclination angle and distribution of black stripes vary. The whole transition interval is divided into 6 intervals, and the transition interval lengthens with increasing fluid velocity. The experiments visually demonstrate the occurrence of the miscible phase, and identify experimental pressure and fluid flow rate as key factors influencing the miscibility of CO2 and crude oil.
PENGARUH MODEL PEMBELAJARAN CPS TERHADAP KEMAMPUAN BERPIKIR KREATIF SISWA KELAS VII MATERI EKOLOGI DAN KEANEKARAGAMAN HAYATI INDONESIA
Authors: Ilah Ilah , Sjaifuddin Sjaifuddin , Islami R. Ahmad Zaky El
Published: October 2024

Rendahnya kemampuan berpikir kreatif menjadi penyebab kesulitan siswa memahami konsep IPA sehingga menjadi masalah utama. Solusi dari permasalahan ini ialah penggunaan model pembelajaran interaktif. Adapun tujuan dari penelitian ini adalah menganalisis pengaruh model pembelajaran CPS pada kemampuan berpikir kreatif siswa kelas VII pada Materi Ekologi dan Keanekaragaman Hayati Indonesia. Metode Quasy Experiment adalah metode yang digunakan. Penelitian dilakukan pada siswa kelas VII di salah satu SMP Negeri di Kota Serang. Tes yang digunakan untuk mengukur kemampuan berpikir kreatif siswa ialah tes uraian yang berindikator berpikir kreatif sebanyak 9 soal yang sudah divalidasi. Pengujian hipotesis dengan uji Independent Sample T- Test dengan skor N-Gain menujukan pengaruh signifikan dari penggunaan model CPS terhadap kemampuan berpikir kreatif. Berdasarkan hasil perhitungan diperoleh nilai 𝑟ℎ𝑖𝑡𝑢𝑛𝑔 0,001 𝑟𝑡𝑎𝑏𝑒𝑙 0,05. Sehingga ditarik kesimpulan bahwa terdapat pengaruh model CPS dalam memberikan kenaikan pada kemampuan berpikir kreatif siswa kelas VII pada materi Ekologi dan Keanekaragaman Hayati Indonesia beraarti disimpulkan 𝐻1 diterima dan 𝐻0 ditolak.
PENGEMBANGAN MEDIA COUNTING BOX PADA PEMBELAJARAN MATEMATIKA MATERI PENJUMLAHAN DAN PENGURANGAN KELAS 1 SEKOLAH DASAR
Authors: Ibrohim M. , Sofwan Muhammad , Budiono Hendra
Published: October 2024

The aim of this research is to find out the process of developing media, as well as the level of validity and practicality of counting box media. This research uses research and development (RD) methods with the ADDIE (Analysis, Design, Development, Implementation and Evaluation) development model. Quantitative data was obtained from material and media validation questionnaires as well as teacher and student responses. Qualitative data consists of input from material and media validators regarding the products being developed. The research was conducted in February 2024 in Class I SDN 103/II Tanjung Agung. The material expert validation results showed a percentage score of 87.5% in the very valid category, while the media expert validation results showed a percentage score of 92.5% in the very valid category. The teacher's response shows a percentage score of 95% in the very practical category, and the student response shows a percentage score of 95.60% in the very practical category. Therefore, based on the findings of this research, it can be concluded that the counting box for teaching addition and subtraction material in first grade elementary schools is very valid and practical. The results also show that the counting box is suitable for use
ANALISIS KEMAMPUAN BERPIKIR KRITIS MATEMATIS SISWA SMP DALAM MENYELESAIKAN SOAL URAIAN ALJABAR
Authors: Fadya Saira Inka , Ardiyanti Yusi
Published: October 2024

This research aims to analyze students' critical thinking abilities in solving algebraic essay questions based on Ennis' critical thinking ability indicators. This study uses a qualitative method. The subjects in the research were 36 class VII D students at one of the Karawang Middle Schools. Sampling used saturated sampling. Data collection through 2 questions describing algebra material with validated instruments. Subjects were divided into 5 groups, namely very good, good, fair, poor, and not good level students. The research results showed that 30 students were in the very good category and were able to solve 2 questions correctly. In the good category, 4 students were able to solve 2 questions but were not thorough enough. In the sufficient category, 2 students can answer 1 question correctly. There are no students in the poor or bad categories. The average student score was 93. It was concluded that the student’s critical thinking skills in algebra material with 36 students at one of the Karawang Middle Schools were classified as having very good critical thinking skills.
PENERAPAN PENDEKATAN STEM UNTUK MENINGKATKAN PEMAHAMAN KONSEP SISWA SD DI KABUPATEN PASURUAN
Authors: Ningsih Tutut Hartina Ilmiah , Supriyono Supriyono , Rahayuningsih Sri
Published: October 2024

This study aims to improve the understanding of concepts with Science, Technology, Emgineering, and Mathematics (STEM) approaches in mathematics learning in elementary school students. The subjects of this study were Class IV teachers and 12 MI Riyadlul Ulum students for the even semester 2023/2024 academic year. Data collection techniques are observation, tests and documentation. Data analysis techniques are carried out through three stages, namely data condensation, data presentation, and concluding data. Based on the results of research on the learning process in cycle I, teacher activities obtain good qualifications (B) and student activities obtain sufficient qualifications (C). while in cycle II teacher activities have good qualifications (B) and student activities obtain good qualifications (B). Furthermore, students' understanding of concepts in the first cycle reached a percentage of 75%, in the second cycle it increased to 93%. So it can be concluded that students experience an increase in understanding concepts using a STEM approach. These findings support the integration of STEM approaches in the Merdeka curriculum in basic education to improve the quality of education.
ANALISIS DESKRIPSI DISPOSISI PRODUKTIF SISWA PADA PEMBELAJARAN MATEMATIKA DITINJAU DARI GENDER
Authors: Fallah Miftahul
Published: October 2024

Productive disposition is the tendency, attitude, or mental state of a person towards a thing or situation. For example, in mathematics, students' attitudes and tendencies towards mathematics, such as belief in the value of mathematics, motivation in learning mathematics, or confidence in their ability to understand mathematical concepts. This study aims to describe students' productive disposition in learning mathematics in terms of gender. This research uses quantitative descriptive data analysis with survey method. This research was conducted on class X students in 30 students divided into 15 males and 15 females of SMAN 5 West Karawang selected through purposive sampling method. The data collection technique used was the distribution of a productive disposition questionnaire consisting of 20 statements and measuring against seven indicators. The results showed that productive disposition in mathematics learning was in the good category with a percentage of 52%, this was supported by the amount of activeness of female students 27% compared to male students who were only 25%.
PENGARUH MODEL PEMBELAJARAN SEARCH, SOLVE, CREATE, AND SHARE (SSCS) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS PESERTA DIDIK
Authors: Chairani Nurfayza , Suprananto Suprananto
Published: October 2024

This study aims to determine whether there is an effect of the Search, Solve, Create, and Share (SSCS) learning model on students' mathematical problemsolving ability and to see how much influence the SSCS learning model has on students' mathematical problemsolving skills.  This research uses a quantitative approach with a quasi-experiment method with a pretest-posttest control group design. The population of this study were all VIII grade students in one of the junior high schools in Bogor Regency. The samples used were class VIII-2 as the control class using conventional learning model and class VIII-4 as the experimental class using SSCS learning model. Data was collected through a mathematical problemsolving ability test in the form of five description questions on Social Arithmetic material. The data obtained were analyzed using T test and Effect Size test. The results of data analysis showed that there was an effect of SSCS learning model on students' mathematical problemsolving ability. The effect size of SSCS learning model on students' mathematical problemsolving ability is 0.39 with moderate category.
SYSTEMATIC LITERATURE REVIEW: BAGAIMANA PEMBELAJARAN GEOMETRI 3D DENGAN BERBANTUAN GEOGEBRA
Authors: Khoirunnisa Asmarani , Oktaviani Devia Nur , Aripin Usman
Published: October 2024

The rapid development of technology can support progress in the field of education, including in mathematics learning. Geogebra is one of the media that can be used in learning, especially in 3D geomtery learning. The purpose of this research with Systematic Literature Review is to provide a description and help solve deeper problems in students' computational abilities when using math software. Acquisition of data through Publish or Perish which contains a Google Scholar database that is reviewed from 200 articles related to 3D geometry learning published in the period 2020-2024 identified by SINTA that can be accessed and is not a foreign language and original research with a final usable 30 articles. The results showed information that learning by using Geogebra is very influential and effective, efficient, and significant so that there is an influence on improving student learning
EKSPLORASI ETNOMATEMATIKA PADA BENTUK JAJANAN PASAR DI DAERAH JEPARA UNTUK PEMBELAJARAN MATEMATIKA SMP
Authors: Apriyanti Dian Naila , Malasari Putri Nur
Published: October 2024

In the cultural context, traditional market snacks in the Jepara area have the potential to integrate ethnomathematics into mathematics learning. Traditional market snacks in Jepara offer various forms of snacks in which there is a geometric concept. The purpose of this study is to find out the concept of geometry in traditional market snacks in the Jepara area. In this study, qualitative methods are used with an ethnographic approach. The objects studied by the researcher were 5 traditional market snacks, with 3 respondent subjects, namely traditional market snack sellers found in Jepara market, Pecangaan market, and Tegalsambi market. Several techniques for collecting data are used in this study, including observation techniques, interviews, and documentation. Based on the research conducted by the researcher, the results were obtained that there are geometric concepts and cultural elements in 5 traditional market snacks in the Jepara area, including a ball-shaped klepon, a rectangular layer, a ball-shaped onde-onde, a triangular prism-shaped banana bongko, and a solid half-ball shaped kintelan. The results of this research are expected to function as an effective alternative learning resource to introduce geometry concepts to students.
EFEKTIVITAS MODUL PEMBELAJARAN MATEMATIKA BERBASIS ELEKTRONIK DALAM MENINGKATKAN KEMAMPUAN LITERASI NUMERASI SISWA
Authors: Huda Nuril , Afidatuzzaro Nurul , Sujarwo Imam , Sari Sulistya Umie Ruhmana
Published: October 2024

This research focuses on examining the level of effectiveness of mathematics learning e-modules in improving students' abilities in the field of numeracy literacy, especially at the initial level in the secondary school years. Based on the quasi-experimental design used and then using the one group pretest-posttest formula, this research is included in the experimental category. The population group for this study were grade 7 students at SMP Negeri 13 Malang, and the sample consisted of 20 grade 7A students. The sampling technique used is purposive non probability type. Quantitative data in this research was collected through tests using pretest and posttest sheets. Data analysis was carried out using a paired t-test using the SPSS program and the gain value formula. Based on the research results, it is known that the t-test significance level is 0.002, which means that the significance value is less than 0.05. As for the calculation of the gain value, the result was 0.4 or equivalent to the medium level effective category. So it is concluded that the e-learning module is effective in improving students' abilities in the numeracy literacy aspect.
ANALISIS PENALARAN ADAPTIF SISWA DALAM MENYELESAIKAN SOAL LITERASI MATEMATIKA TERINTEGRASI ISLAM DITINJAU DARI GAYA KOGNITIF
Authors: Zahbi Ud'hiyata , Irawan Wahyu Henky
Published: October 2024

This research was conducted to determine students' adaptive reasoning in solving Islamic integrated mathematical literacy questions based on cognitive style. This research uses an exploratory qualitative approach with a phenomenological nature. The subjects of this research consisted of 6 students from class VIII Islamic Junior High School Al-Faqih Nganjuk which consists of 3 field dependent type students and 3 field independent type students. Data collection was carried out by administering adaptive reasoning tests and interviews. The data obtained was transcribed and then analyzed based on the adaptive reasoning indicators of Killpatrick et al.'s theory. which consists of making conjectures, giving reasons for a statement, drawing conclusions from a statement, checking the validity of an argument, and finding patterns in mathematical phenomena. Based on data analysis from 6 subjects with different cognitive styles, differences were found in their adaptive reasoning. Students with a field dependent cognitive style do not meet the adaptive reasoning indicators in solving Islamic integrated mathematical literacy questions. They are only able to fulfill 3-4 indicators out of 5 indicators of adaptive reasoning. Meanwhile, students with a field independent cognitive style fulfill the adaptive reasoning indicators in solving Islamic integrated mathematics literacy problems.
PENGARUH MODEL PEMBELAJARAN PBL BERBANTUAN ICE BREAKING TERHADAP KEMAMPUAN REPRESENTASI MATEMATIS DAN KEMANDIRIAN BELAJAR SISWA KELAS VIII MTs ZIA SALSABILA
Authors: Fariha Maulia , Karo-Karo S Isran Rasyid
Published: October 2024

This study aims to determine the effect of the Problem Based Learning learning model assisted by ice breaking on students' mathematical representation abilities and learning independence. The method used is a quantitative method with an experimental research type. The sample consists of 27 students of VIII B as an experimental class and 20 students of class VIII A as a control class at MTs Zia Salsabila Bandar Setia. The results of the study showed that the t-test analysis that had been carried out obtained a p-value = 0.00 0.05 and p-value = 0.0001 0.005. The data explains that   is accepted and  is rejected. The average n-gain obtained in the experimental class was 0.64 and 0.57 while the control class obtained a value of 0.16 and 0.29 so that the average difference in n-gain was 0.48 and 0.28. Based on these data, it can be concluded that the mathematical representation ability and learning independence of students who learn using the PBL learning model assisted by ice breaking are better than students who learn in class with conventional learning models. There is an influence of the use of the PBL learning model assisted by ice breaking on students' mathematical representation abilities and learning independence.
ANALISIS KEMAMPUAN BERPIKIR KREATIF DITINJAU DARI ADVERSITY QUOTIENT PADA PEMBELAJARAN CREATIVE PROBLEM SOLVING PENDEKATAN OPEN-ENDED
Authors: Windarti Desti Hana , Wardono Wardono , Mariani Scolastika
Published: October 2024

This research aims to determine the quality of creative mathematical thinking abilities in terms of AQ in CPS learning with an open-ended approach assisted by G. Classroom. The type of research is quantitative research. The research population was all class VII. The research sample used a cluster random sampling technique. The conclusions of the results of the analysis were: (1) the mathematical creative thinking ability of participants who received the CPS learning model with an open-ended approach assisted by Google Classroom achieved BTA (2) Students with the ability to think creatively mathematically in terms of AQ in CPS learning with an open-ended approach assisted with Google classroom achieves learning completeness of more than 75%, (3) the mathematical creative thinking ability in the CPS learning model with the open-ended approach assisted by G. Classroom is better than the PBL learning model, (4) the proportion of mathematical creative thinking ability completeness in the CPS learning model approach open-ended with the help of Google Classroom is more than the proportion of students in the PBL learning model, (5) there is a difference in the average increase in mathematical creative thinking abilities of students in the CPS learning model with the open-ended approach assisted with G. Classroom and students in the PBL learning model, (6) There is a positive influence on the adversity quotient on the ability to think creatively mathematically in mathematics learning