Abstract:Covid-19 is a serious health problem that occurs globally, including in Indonesia. Mathematical modeling is one way to see how the spread of the Covid-19 pandemic is developing. The model used in this study is SVEI1I2R and…
nd its stability will be seen. The article discusses the stability of fixed points using the Jacobian matrix and the Routh-Hurwitz criterion as well as the Castilo-Chaves and Song Theorems, reproduction numbers, and their numerical analysis. The results of the analysis show that the stability of fixed points is related to the basic reproduction number determined by the next-generation matrix, stability analysis in accordance with the theorem and the distribution of the population is shown in a numerical graph.
Abstract:This study was motivated by the low mathematics learning outcomes of vocational high school students, which are influenced by affective factors, particularly learning interest and self-confidence. Mathematics plays a crucial…
cial role in developing students’ logical, critical, and systematic thinking skills; therefore, successful mathematics learning constitutes an essential component of vocational education. The research problem focused on the influence of learning interest and self-confidence on the mathematical cognitive learning outcomes of eleventh-grade students at SMK Negeri 7 Kabupaten Tangerang. The study employed a quantitative approach with a correlational survey design. The research sample consisted of 129 students selected through cluster sampling techniques. Data were collected through Likert-scale questionnaires and documentation of students’ mathematics scores. Data analysis was conducted using descriptive statistics, Pearson correlation, and multiple linear regression with the assistance of SPSS software. The findings revealed that learning interest did not have a significant effect on mathematics learning outcomes, contributing only 1.1%, whereas self-confidence had a significant effect with a contribution of 10.8%. Simultaneous testing demonstrated that learning interest and self-confidence collectively exerted a significant influence on mathematics learning outcomes with a contribution of 13.8%. The findings indicate that self-confidence is a more dominant affective factor than learning interest in improving the mathematical cognitive learning outcomes of vocational high school students. The novelty of this study lies in the finding that the vocational practice-oriented characteristics of vocational high school students cause learning interest not to directly influence mathematics learning outcomes, while self-confidence emerges as a more determining factor in students’ academic achievement. The results of this study are expected to serve as a foundation for developing mathematics learning strategies that are more oriented toward strengthening students’ psychological aspects.
Abstract:This service examines the necessity and pertinence of adopting a pedagogical approach that incorporates educational game components in order to promote motor development and enhance student engagement in the learning process.…
cess. On November 18, 2023, this service activity was conducted at UPTD. SD Negeri 014672 Tanjung Alam. This activity is structured into three distinct phases during its execution: preparation, implementation, and practice. Based on empirical findings, engaging in direct interaction with mathematical puzzles has been found to enhance hand-motor coordination, finger dexterity, and precision control during object manipulation. Ninety-five percent of students were extremely interested in this educational game; eighty-five percent felt that math puzzle games improved their fine motor skills (hand and finger movements); and ninety-two percent intend to continue playing math puzzles on other materials in the future, according to the results of the questionnaire assessing the experience of playing with math puzzles. Students' fine motor skills improved significantly as a result of the implementation of this game, it was concluded.
Abstract:Abstract: Many ways taken by the government to realize the human resources of Indonesia with intellectual ability that can compete with the region even with other countries, one of them with a Mathematics Olympiad held both…
oth elementary / MI, SMP / MTs., SMA / SMK / MA even the level of Students . But sometimes those who can enjoy the Olympics are only certain schools. This is due to the lack of socialization conducted by the government regarding such activities as well as the factor of the school itself which still has a sense of inferior to compete with other schools. The purpose of this training activity is to improve the ability of students to solve Mathematics Olympic questions. The implementation of this activity was carried out at SMAN 2 Tanjung Balai, with the method of providing training and training strategies prepared by the writing team. the results of the training, that students are very enthusiastic in discussing Mathematical Olympiad problems with the tricks provided and they can easily answer the questions given without the constraints which means are expected to produce new seeds from the winners of the Mathematics Olympiad.
Keywords: Training, Problem Prediction, Mathematics Olympiad.
Abstrak: Banyak cara yang ditempuh oleh pemerintah untuk mewujudkan sumber daya manusia Indonesia dengan kemampuan intelektual yang dapat bersaing dengan daerah bahkan dengan Negara lain, salah satunya dengan diadakan Olimpiade Matematika baik tingkat SD/MI, SMP/MTs., SMA/SMK/MA bahkan tingkat Mahasiswa. Namun terkadang yang bisa menikmati kegiatan olimpiade tersebut hanyalah sekolah-sekolah tertentu saja. Hal tersebut disebabkan masih kurangmya sosialisasi yang dilakukan pemerintah mengenai kegiatan tersebut serta faktor dari sekolah itu sendiri yang masih memiliki rasa minder untuk bersaing dengan sekolah-sekolah lain. Tujuan dalam kegiatan pelatihan ini adalah untuk meningkatkan kemampuan peserta didik dalam menyelesaikan soal-soal Olimpiade Matematika. Penyelenggaraan kegiatan ini dilaksanakan di SMAN 2 Tanjung Balai, dengan metode memberikan pelatihan dan strategi pelatihan yang sudah disiapkan oleh tim penulis. hasil pelatihan tersebut, bahwa siswa sangat antusias dalam membahas soal-soal Olimpiade Matematika dengan trik yang diberikan dan mereka pun dapat dengan mudah menjawab soal-soal yang diberikan tanpa kendala yang berarti diharapkan mampu menghasilkan bibit-bibit baru dari pemenang Olimpiade Matematika.
Kata Kunci : Pelatihan, Prediksi Soal, Olimpiade Matematika.
Abstract:This study focuses on the development of an Augmented Reality (AR)–based learning application designed to assist students in understanding the mathematical concepts of volume and surface area of three-dimensional geometric…
tric shapes. The development process adopted the Multimedia Development Life Cycle (MDLC) model, which consists of six systematic stages: concept, design, material collecting, assembly, testing, and distribution. The research concentrated on the development and expert validation stages. Validation results from content and media experts indicate that the application meets pedagogical and technical feasibility standards. The content expert confirmed that the materials align with the national mathematics curriculum and are presented in a clear, contextual, and accurate manner, while the media expert highlighted the user-friendly interface, interactive features, and visual appeal of
the application. Theoretically, this AR-based medium bridges the gap between abstract mathematical concepts and concrete visualization by enabling students to interact directly with
virtual 3D objects. Practically, the application enhances learning motivation and engagement by providing dynamic, interactive experiences. Overall, this research contributes to the
advancement of educational technology by offering a systematic model for developing AR-based learning media that support active and meaningful learning in the digital
era.
Abstract:Abstract: This research is motivated by the problem of building material inventory management at Jaqfar Building Store, which is still done manually and based on subjective estimates. This often results in inaccuracies in…
n determining stock levels, either in the form of overstock or understock, which hinders operational effectiveness. The purpose of this study is to apply the Multiple Linear Regression method to analyze the relationship between incoming stock (X1) and outgoing stock (X2) variables with the ending stock variable (Y) to produce an optimal inventory prediction model. The research methodology used includes collecting historical transaction data for building materials such as cement, ceramics, zinc, plywood, and iron. This web-based prediction system was developed using the PHP programming language and a MySQL database. The analysis results show that the resulting regression model can provide a mathematical picture of future inventory patterns based on historical data. Implementation of this system is expected to assist the management of Jaqfar Building Materials Store in making strategic decisions regarding purchasing and sales in a more measured and efficient manner.
Keyword: building materials; data mining; inventory; multiple linear regression
Abstrak: Penelitian ini dilatarbelakangi oleh permasalahan pengelolaan persediaan bahan bangunan di Toko Bangunan Jaqfar yang masih dilakukan secara manual dan berdasarkan perkiraan subjektif. Hal ini menyebabkan sering terjadinya ketidaktepatan dalam menentukan jumlah stok, baik berupa kelebihan barang (overstock) maupun kekurangan barang (understock) yang menghambat efektivitas operasional. Tujuan dari penelitian ini adalah menerapkan metode Multiple Linear Regression (Regresi Linear Berganda) untuk menganalisis hubungan antara variabel stok masuk (X1) dan stok keluar (X2) terhadap variabel stok akhir (Y) guna menghasilkan model prediksi persediaan yang optimal. Metodologi penelitian yang digunakan mencakup pengumpulan data historis transaksi bahan bangunan seperti semen, keramik, seng, triplek, dan besi. Sistem prediksi ini dikembangkan berbasis web menggunakan bahasa pemrograman PHP dan basis data MySQL. Hasil analisis menunjukkan bahwa model regresi yang dihasilkan mampu memberikan gambaran matematis mengenai pola persediaan di masa mendatang berdasarkan data historis. Implementasi sistem ini diharapkan dapat membantu manajemen Toko Bangunan Jaqfar dalam mengambil keputusan strategis terkait pembelian dan penjualan secara lebih terukur serta efisien.
Kata kunci: bahan bangunan; data mining; persediaan; regresi linear berganda
Abstract:Abstract: The global transition towards sustainable food systems faces significant challenges in vegetarian food supply chains, including transparency issues, distribution inefficiencies, and quality verification problems.…
s. This research proposes VegeChain development, a decentralized marketplace ecosystem based on smart contracts designed to transform vegetarian food supply chains and accelerate Meatless, Balanced, Green (MBG) program adoption. Using mixed-method methodology integrating blockchain system design, stakeholder analysis, and economic simulation, this research develops a comprehensive technology framework combining blockchain transparency, smart contract automation, and sustainable tokenomics with novel mathematical models. The system implements dynamic pricing algorithms based on Automated Market Maker (AMM) mechanisms, multi-objective optimization for supply chain efficiency, and reputation-based consensus protocols. Simulation results demonstrate that VegeChain implementation can improve supply chain efficiency by 35%, reduce food waste by 28%, and increase consumer trust by 42% measured through validated stakeholder satisfaction surveys (n=456) using 5-point Likert scales with statistical significance p<0.001. Technical innovations include Byzantine Fault Tolerant consensus with 99.9% reliability, gas optimization achieving 67% cost reduction, and real-time quality verification algorithms with 98.7% accuracy.
Keywords: smart contracts; supply chain optimization; automated market makers; blockchain technology; sustainable tokenomics
Abstract:Abstract: Hypertension is one of the chronic diseases that can increase the risk of cardiovascular disease. A healthy diet is an important factor in managing hypertension, but many patients struggle to choose foods that…
are suitable for their condition. Therefore, a decision support system is needed to help patients determine healthy food choices objectively and systematically. This research aims to apply the ELECTRE (Elimination Et Choix Traduisant La Réalité) method in determining healthy foods for hypertension patients. This method is used because it can handle various criteria simultaneously and provide recommendations based on a mathematical approach. Data were obtained from Serozha Clinic through interviews, observations, and literature reviews on the nutritional content of food. The research results show that the ELECTRE method is capable of providing healthy food recommendations with an accuracy level of 90%, higher than the manual technique which only reaches 70%. In addition, the time required in the decision-making process has significantly decreased. Patients also showed a higher level of satisfaction with the proposed system. In conclusion, the ELECTRE method has proven effective in helping hypertension patients choose foods that meet their nutritional needs, and can thus be used as a reference in the development of decision support systems in the health sector.
Keywords: electre method; healthy food; health management; hypertension.
Abstrak: Hipertensi merupakan salah satu penyakit kronis yang dapat meningkatkan risiko penyakit kardiovaskular. Pola makan yang sehat menjadi faktor penting dalam pengelolaan hipertensi, namun banyak pasien kesulitan dalam memilih makanan yang sesuai dengan kondisi mereka. Oleh karena itu, diperlukan sistem pendukung keputusan yang dapat membantu pasien dalam menentukan pilihan makanan sehat secara objektif dan sistematis. Penelitian ini bertujuan untuk menerapkan metode ELECTRE (Elimination Et Choix Traduisant La Realite) dalam menentukan makanan sehat bagi penderita hipertensi. Metode ini digunakan karena mampu menangani berbagai kriteria secara simultan dan memberikan rekomendasi berdasarkan pendekatan matematis. Data diperoleh dari Klinik Serozha melalui wawancara, observasi, serta tinjauan literatur mengenai kandungan gizi makanan.Hasil penelitian menunjukkan bahwa metode ELECTRE mampu memberikan rekomendasi makanan sehat dengan tingkat akurasi 90%, lebih tinggi dibandingkan teknik manual yang hanya mencapai 70%. Selain itu, waktu yang dibutuhkan dalam proses pengambilan keputusan berkurang secara signifikan. Pasien juga menunjukkan tingkat kepuasan yang lebih tinggi terhadap sistem yang diusulkan.Kesimpulannya, metode ELECTRE terbukti efektif dalam membantu penderita hipertensi memilih makanan yang sesuai dengan kebutuhan gizi mereka, sehingga dapat digunakan sebagai referensi dalam pengembangan sistem pendukung keputusan di bidang kesehatan.
Kata kunci: hipertensi; makanan sehat; metode electre; pengelolaan kesehatan.
Abstract:Pecahan merupakan salah satu materi matematika yang penerapannya sering dijumpai dalam kegiatan sehari-hari. Penelitian ini bertujuan mengukur sejauh mana siswa kelas IV SD Negeri 010091 Kisaran Baru memahami konsep pecahan.…
han. Metode yang digunakan berbentuk deskriptif kualitatif dengan melibatkan 26 siswa sebagai subjek kajian. Data dihimpun melalui empat cara, yakni tes, pengamatan, wawancara, dan penelusuran dokumen. Hasil kajian memperlihatkan bahwa pemahaman siswa atas konsep pecahan tergolong masih rendah, dibuktikan oleh angka ketuntasan belajar yang hanya menyentuh 23,07%. Kondisi tersebut dipengaruhi oleh sejumlah hal, di antaranya lemahnya penguasaan dasar pecahan, rendahnya keterlibatan siswa saat belajar, serta metode pengajaran yang belum diterapkan secara maksimal. Mengacu pada hasil tersebut, diperlukan strategi pembelajaran yang lebih interaktif untuk mendorong peningkatan pemahaman siswa terhadap pecahan.
Fraction is a fundamental mathematical topic that frequently appears in everyday situations. This study set out to examine how well fourth-grade students at SD Negeri 010091 Kisaran Baru grasp the concept of fractions. A qualitative descriptive design was employed, with 26 students taking part as participants. Four data-gathering techniques were used: testing, observation, interviews, and document review. Findings revealed that students’ grasp of fraction concepts was still limited, shown by a completion rate of only 23,07%. Several factors contributed to this outcome, among them a weak foundation in basic fraction concepts, low student involvement during lessons, and teaching methods that had not been optimally applied. Based on these findings, more interactive learning strategies are needed to help strengthen students’ conceptual grasp of fractions.
Abstract:Pecahan merupakan salah satu materi matematika yang penerapannya sering dijumpai dalam kegiatan sehari-hari. Penelitian ini bertujuan mengukur sejauh mana siswa kelas IV SD Negeri 010091 Kisaran Baru memahami konsep pecahan.…
han. Metode yang digunakan berbentuk deskriptif kualitatif dengan melibatkan 26 siswa sebagai subjek kajian. Data dihimpun melalui empat cara, yakni tes, pengamatan, wawancara, dan penelusuran dokumen. Hasil kajian memperlihatkan bahwa pemahaman siswa atas konsep pecahan tergolong masih rendah, dibuktikan oleh angka ketuntasan belajar yang hanya menyentuh 23,07%. Kondisi tersebut dipengaruhi oleh sejumlah hal, di antaranya lemahnya penguasaan dasar pecahan, rendahnya keterlibatan siswa saat belajar, serta metode pengajaran yang belum diterapkan secara maksimal. Mengacu pada hasil tersebut, diperlukan strategi pembelajaran yang lebih interaktif untuk mendorong peningkatan pemahaman siswa terhadap pecahan.
Fraction is a fundamental mathematical topic that frequently appears in everyday situations. This study set out to examine how well fourth-grade students at SD Negeri 010091 Kisaran Baru grasp the concept of fractions. A qualitative descriptive design was employed, with 26 students taking part as participants. Four data-gathering techniques were used: testing, observation, interviews, and document review. Findings revealed that students’ grasp of fraction concepts was still limited, shown by a completion rate of only 23,07%. Several factors contributed to this outcome, among them a weak foundation in basic fraction concepts, low student involvement during lessons, and teaching methods that had not been optimally applied. Based on these findings, more interactive learning strategies are needed to help strengthen students’ conceptual grasp of fractions.