Article Per Year (5 Year)
p-Index From 2020 - 2025
6.081
P-Index
This Author published in this journals
All Journal Paradikma: Jurnal Pendidikan Matematika Jurnal Daya Matematis Jurnal KARISMATIKA NUMERICAL (Jurnal Matematika dan Pendidikan Matematika) Jurnal Penelitian Pendidikan IPA (JPPIPA) JURNAL SAINS INDONESIA Indonesian Journal of Artificial Intelligence and Data Mining BAREKENG: Jurnal Ilmu Matematika dan Terapan Zero : Jurnal Sains, Matematika, dan Terapan Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam Jurnal Perspektif CARTESIUS : Jurnal Pendidikan Matematika Jurnal Matematika UNAND JATI (Jurnal Mahasiswa Teknik Informatika) Proximal: Jurnal Penelitian Matematika dan Pendidikan Matematika Didaktik : Jurnal Ilmiah PGSD STKIP Subang Jambura Journal of Biomathematics (JJBM) Jurnal Fibonaci: Jurnal Pendidikan Matematika Kognitif: Jurnal Riset HOTS Pendidikan Matematika Journal of Mathematics and Scientific Computing With Applications Jurnal MathEducation Nusantara Journal of Comprehensive Science Cartesius Al-Irsyad Journal of Mathematics Education Innovative: Journal Of Social Science Research Journal International Journal of Teaching and Learning (INJOTEL)
Nasution, Hamidah .
Universitas Negeri Medan
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

Published : 49 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 49 Documents
Search

 1   2   3   4   5 
OPTIMIZING RAW MATERIAL INVENTORY USING ECONOMIC ORDER QUANTITY (EOQ) METHOD IN BOMBAY BAKERY Hannum, Syaripah; Ahyaningsih, Faiz; Nasution, Hamidah
ZERO: Jurnal Sains, Matematika dan Terapan Vol 7, No 1 (2023): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v7i1.17562

Abstract

Bombay Bakery is a bakery that operates in the field of bread production. Various raw materials used in bread production include wheat flour, butter, sugar, bread improver, eggs and so on. This research aims to determine the optimal order quantity of raw materials each time an order or purchase is made, for the Reorder Point and for the total cost of raw material inventory using the Economic Order Quantity (EOQ). Data collection techniques were carried out by means of library studies and field research. The data analysis technique used is quantitative data analysis technique. Based on perhi analysisThe profit was obtained by ordering or purchasing 659 Kg of raw materials for wheat flour, 37 Kg of butter, 102 Kg of sugar, 3 Kg of bread improver, and 11 eggs with a reorder point for wheat flour raw materials of 501 Kg, 24 Kg of butter, 65 Kg of sugar, 1 Kg of bread leaven, and 8 pieces of eggs. With total costs using company policy of IDR 22,740,233.- while using the Economic Order Quantity (EOQ) model it is IDR 12,761,888.-  so that using the Economic Order Quantity (EOQ) model is more effective in saving raw material inventory costs
IMPLEMENTATION OF THE DOUBLE EXPONENTIAL SMOOTHING (DES) METHOD TO FORECET THE CONSUMER PRICE INDEX (CPI) IN MEDAN CITY Hutagalung, Goklas; Nasution, Hamidah
ZERO: Jurnal Sains, Matematika dan Terapan Vol 6, No 1 (2022): Zero: Jurnal Sains Matematika dan Terapan
Publisher : UIN Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30829/zero.v6i1.12455

Abstract

The Central Statistics Agency (BPS) as a non-ministerial government agency has the task of providing data needs for the government and the public obtained through censuses and surveys conducted by BPS itself and also from other government departments or agencies as secondary data.  The problem that occurs at BPS is   the field of inflation, one of which is in the field of the consumer price index, which experiences price fluctuations which have an impact on the economy. Forecasting is an important tool used for effective and efficient planning, therefore, forecasting is needed to predict various events that will occur in the future. One of the methods used for forecasting is the linear Double Exponential Smoothing (DES) method from Brown, this method basically uses past data which is smoothed by exponen- tially weighting the older observation values or newer values and the data used shows trend pattern. Trend is a smoothed estimate of the average growth at the end of the period. In this study, the best parameter α for forecasting the consumer price index in the city of Medan is α= 0,8 with a MAPE percentage of 0,0223. And the results of the consumer price index forecast in the city of Medan in 2022-2023 show an increase every month.
Sistem Pakar Diagnosa Penyakit Ginjal Menggunakan Metode Dempster Shafer Di Rsud Pirngadi Medan Parapak, R Putri Angela; Kana Saputra S; Nasution, Hamidah; Indra, Zulfahmi; Taufik, Insan
Innovative: Journal Of Social Science Research Vol. 4 No. 5 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i5.15895

Abstract

Dalam era modern yang dipenuhi dengan kemajuan teknologi komputerisasi, perkembangan teknologi informasi terjadi dengan kecepatan yang luar biasa dan memiliki dampak yang signifikan dalam berbagai aspek kehidupan manusia. Dalam konteks ini, penting untuk diakui bahwa penyakit ginjal merupakan salah satu masalah kesehatan yang perlu mendapatkan perhatian serius dari masyarakat. Sayangnya, penyakit ini seringkali sulit dideteksi secara dini dan dapat mengancam nyawa seseorang jika tidak ditangani dengan tepat. Dalam situasi di mana kesadaran akan kesehatan seringkali rendah, terdapat kebutuhan yang mendesak untuk mengembangkan solusi yang dapat membantu meningkatkan deteksi dini dan diagnosis penyakit ginjal. Salah satu solusi yang inovatif adalah dengan memanfaatkan teknologi informasi dalam bentuk aplikasi sistem pakar. Melalui pendekatan ini, penulis merancang sebuah aplikasi sistem pakar yang bertujuan untuk mendeteksi penyakit ginjal akut dan kronis. Aplikasi ini dibangun dengan menggunakan metode Dempster-Shafer, sebuah teknik yang mampu menggabungkan data dari berbagai sumber untuk menghasilkan estimasi yang lebih akurat. Dengan menggunakan bahasa pemrograman PHP, HTML, dan SQL Server, aplikasi ini mampu mengumpulkan gejala yang dilaporkan oleh pengguna dan menganalisisnya untuk memberikan diagnosis yang lebih tepat. Tidak hanya memberikan diagnosis, aplikasi ini juga memberikan informasi tentang tingkat kepercayaan terhadap kemungkinan penyakit ginjal yang diderita oleh pengguna. Dengan memberikan informasi yang komprehensif dan akurat, aplikasi ini diharapkan dapat membantu pengguna dalam mengidentifikasi penyakit ginjal yang mungkin dialami dan memberikan informasi yang berguna untuk langkah-langkah pengobatan selanjutnya. Dengan demikian, aplikasi sistem pakar ini tidak hanya bertujuan untuk meningkatkan kesadaran akan pentingnya deteksi dini terhadap penyakit ginjal, tetapi juga untuk memberikan solusi yang konkret dan terukur dalam menangani masalah kesehatan ini.
Dynamic analysis of SEIR model for Covid-19 spread in Medan Sihaloho, Ruth Salisa; Nasution, Hamidah
Jambura Journal of Biomathematics (JJBM) Volume 3, Issue 2: December 2022
Publisher : Department of Mathematics, Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjbm.v3i2.16878

Abstract

In this study, a mathematical model was studied on the population of the spread of Covid-19 in Medan which the model use an epidemic mathematical model, SEIR (Susceptible, Exposed, Infected, and Recovered). Next, we determine the basic reproduction number R0 using the next generation matrix and the equilibrium point which is analyzed using the Routh Hurwitz criteria. The disease-free equilibrium point is said to be locally asymptotically stable if R01 and the endemic equilibrium point is said to be locally asymptotically stable if R01. Numerical simulation of the model was carried out using real data on the number of Covid-19 cases in Medan and with the help of Maple software. Through the data obtained, the value of R01 indicates that Covid-19 at the time of the study was still contagious to other individuals. Furthermore, based on the simulation formed from the SEIR model with the given initial and parameters, it was found that the greater the contact rate or the transmission rate, the more spread the disease would be and the smaller the cure rate, the more the disease would spread.
ANALISIS MATEMATIKA PADA EFEKTIVITAS VAKSIN MENGENDALIKAN PENYEBARAN COVID-19 DI PROVINSI SUMATERA UTARA Nasution, Hamidah; Alamsyah, Febi; Surbakti, Nurul Maulida
Jurnal Matematika UNAND Vol. 12 No. 3 (2023)
Publisher : Departemen Matematika dan Sains Data FMIPA Universitas Andalas Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jmua.12.3.229-243.2023

Abstract

Abstrak. Severe Acute Respiratory Syndrome Corona-virus 2 (SARS-CoV-2) ataulebih dikenal Covid-19 adalah virus menular yang sangat berbahaya dan menular dengan cepat. Penyebaran Covid-19 terus menjadi tantangan global yang signifikan dan dapat menimbulkan kematian. Vaksinasi menjadi strategi penting dalam upaya mengendalikan penyebaran penyakit Covid-19 ini. Tujuan penelitian ini adalah menunjukkan efktivitas vaksinasi dalam mengendalikan penyebaran Covid-19 di wilayah Sumatera Utara. Pendekatan yang digunakan adalah melalui pengembangan dan analisis model matematika yang mempertimbangkan faktor-faktor kunci yang mempengaruhi penyebaran penyakit. Dalam model ini, kami menggabungkan parameter vaksinasi dengan variabel-variabel terkait penyebaran penyakit seperti tingkat kontak sosial, kekebalan populasi, dan faktor risiko lainnya. Vaksinasi dilakukan terhadap populasi rentan, Hasil evaluasi menunjukkan bahwa vaksinasi memiliki peran yang signifikan dalam mengendalikan penyebaran Covid-19 di Sumatera Utara. Dengan menggunakan model matematika, dapat memprediksi dampak vaksinasi terhadap penurunan jumlah kasus, tingkat kesembuhan, dan tingkat kematian terkait Covid-19. Selain itu, kami juga menganalisis skenario vaksinasi yang berbeda untuk mengevaluasi efektivitasnya dalam mengurangipenyebaran penyakit Hasil penelitian menunjukkan semakin besar populasi rentanyang divaksin akan memperlambat laju penularan sehingga mengurangi populasi terinfeksi. Analisis dari hasil simulasi menunjukkan bahwa 75% jumlah populasi di Provinsi Sumatera Utara melaksanakan vaksinasi memberikan penurunan jumlah populasi terinfeksi yang signifikan, grafik populasi terinfeksi turun melandai menuju nol, artinya kasus Covid-19 di Provinsi Sumatera Utara dalam kurun waktu tertentu berkurang secara signifikan, Covid-19 bukan pandemi lagi. Hasil penelitian ini dapat menjadi dasar bagi pengambilan keputusan yang berorientasi pada vaksinasi dan upaya pengendalian penyebaran Covid-19 di Sumatera Utara.
Development of Learning Tools Based on the Think Pair Share Learning Model to Improve Metacognition Abilities of Junior High School 4 Panyabungan Rahmadani, Ulfy; Nasution, Hamidah; Mariani, Mariani
PARADIKMA: JURNAL PENDIDIKAN MATEMATIKA Vol. 17 No. 1 (2024): PARADIKMA JURNAL PENDIDIKAN MATEMATIKA (January-June 2024)
Publisher : Study Program of Mathematics Education of Unimed Postgraduate Program

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/paradikma.v17i1.52552

Abstract

This study aims to describe the validity, usability, and efficacy of learning tools based on the Think-Pair-Share learning model, the improvement of students' mathematical metacognition and mathematical communication skills through the use of the developed learning tools, and the process of students' answers to questions pertaining to mathematical metacognition and communication skills. This study is development research employing a four-dimensional development model. Validation and observation sheets, Student Books, Mathematical Metacognition Tests, and Mathematical Communication Tests are the research instruments. Trial I was conducted on students in class VIIIA, and Trial II was conducted on students in class VIIIB at SMP Negeri 4 Panyabungan. From the findings of this study, it was determined that: (1) The developed Think Pair Share learning tools including BS, LKPD, TKMM, and TKKM were included in the valid category; (2) The practicality of the Think Pair Share-based learning device that was developed revealed that: the device could be used with a few revisions and the results of observations of the implementation of the learning device in class revealed that the average practical value, the r-value, was greater than 0.5; and (3) The validity of the Think In trial II, the pre-test was 20.83 percent and the post-test was 87.50 percent; more than 80 percent of students gave positive responses to the learning tools developed; and more than 85 percent of each component of student involvement demonstrated that students were actively engaged in learning; (4) Students' mathematical metacognition and communication abilities increased using the developed Think Pair Share-based learning tool, with an N-gain score of 0.54 for mathematical metacognition and an N-gain score of 0.54 for communication ability.
Development of a Flipbook Learning Media Based on a Problem-Based Learning Model to Improve Mathematical Literacy Skills and Students' Motivation for Learning on the Pythagorean Theorem in Grade VIII at State Junior High School 40 Medan Simarmata, Putri Sonia; Mulyono, Mulyono; Lubis, Asrin; Nasution, Hamidah
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 3 (2025): December (article on Progress)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v13i3.77215

Abstract

Based on the results of initial observations at SMP Negeri 40 Medan, there are teachers who have not maximized the design, development, and utilization of learning media, especially flipbook media that has never been implemented. As well as the mathematical literacy skills and learning motivation of students are still low. This study aims to (1) produce flipbook media based on the Problem Based Learning learning model that is valid, practical and effective, (2) analyze the improvement of mathematical literacy skills and (3) analyze the improvement of student learning motivation using flipbook media based on Problem Based Learning. This study uses the ADDIE model. This study involved class VIII students of SMP Negeri 40 Medan. The instruments used in the development of flipbook media are Teaching Modules, LKPD, Mathematical Literacy Ability Tests and Student Learning Motivation Questionnaires. The results of the study are that the flipbook media meets the valid criteria with a score of 4.69, then the flipbook media was tested to obtain practical and effective media so that it meets the practical criteria with a score of 88.95, and the flipbook media meets the effective criteria with a score of 87.79. The increase in mathematical literacy skills measured by N-gain on the development trial conducted twice against pretest with posttest I with an average N-gain of 0.33 in the medium category, then against posttest I and posttest II with an average N-gain of 0.73 in the high category. Furthermore, the increase in students' learning motivation by measuring the pretest and posttest with an average N-gain of 0.6 in the medium category. Based on the N-gain results, it is stated that flipbook media based on the Problem Based Learning learning model is able to improve students' mathematical literacy skills and learning motivation at SMP Negeri 40 Medan.
Cofactor Expansion Approaches for Generalized Determinants of Non-Square Matrices Mulyono, Mulyono; Nasution, Hamidah; Habibi, Rizki; Saraski, Silvya Ajeng
Jurnal Penelitian Pendidikan IPA Vol 11 No 11 (2025): November: In Progress
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i11.12335

Abstract

Determinants are conventionally defined only for square matrices, which leaves the theoretical discussion of rectangular matrices relatively undeveloped. This study aims to extend determinant theory by introducing a generalized form of the cofactor expansion applicable to non-square matrices. The method employed in this research is a theoretical–analytical approach that begins with identifying fundamental determinant axioms and proceeds with the construction of a recursive cofactor expansion for   matrices with . Worked examples are used to demonstrate the linearity, antisymmetry under row interchange, and reduction consistency of the proposed formulation when applied to square matrices. The findings indicate that the generalized expansion preserves essential algebraic properties and shows compatibility with established rectangular determinant definitions, including the Radić determinant. Overall, this study provides a coherent theoretical foundation for the generalized determinant of rectangular matrices and contributes to broader applications of determinant-based analysis in linear algebra
APPLICATION OF WEIGHT PRODUCT AND TOPSIS METHODS IN SELECTING THE BEST ONLINE TRANSPORTATION SERVICE Nur Fitriani; Hamidah Nasution
Journal of Mathematics and Scientific Computing With Applications Vol. 6 No. 2 (2025)
Publisher : Pena Cendekia Insani

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53806/jmscowa.v6i2.1206

Abstract

This study emphasises the application of mathematical and computational modelling to support multi-criteria decision-making in the selection of online transportation services. Using Microsoft Excel, the research employs the Weighted Product (WP) and Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) methods to assess alternatives based on six quantitative criteria: price, promotion, service variety, payment method, convenience, and punctuality. The integrated application of WP and TOPSIS provides a systematic process of normalisation, weighting, and ranking to determine the optimal alternative. The findings indicate that GOJEK achieves the highest preference value (0.6107), followed by GRAB (0.5533), IN-DRIVE (0.5000), and MAXIM (0.3893). The methodological contribution of this research lies in demonstrating how the integration of WP and TOPSIS within computational tools establishes an effective mathematical framework for optimising decision-making in service evaluation.
Co-Authors Ahmad Rifai Siregar Ahyaningsih, Faiz Ahyaningsih, Faiz Aida Fitri Harun Pakpahan Alamsyah, Febi Ananda, Rizky Anidah, Anidah Asmin Asmin, Asmin Asrin Lubis Ayuniara, Rini BR Sihaholo, Ruth Salisa Cyntia S., Maria Dara Fitrah Dwi DIdi Febrian Dinda Lestari Dwi Lestari, Riani Elma Batasia Siregar Faigle, Ulrich Farwansyah, Mhd Rio Freddy Giawa Habibi, Rizki Hadi, Rizkiyan Hannum, Syaripah Hasibuan, Iman Kamarullah hutabarat, Putri Sari Hutagalung, Goklas Ikhwan, Ali Insan Taufik Intan Mutya Ismail Husein, Ismail Izwita Dewi Kana Saputra S Karo, Nur Hidayah Br. Kartika, Dinda Manihuruk, Hermanto MANSUR AS Manurung, Jeremia Mariani Mariani Mariani Mariani Muhammad Rizky Fauzy Mukhtar Mukhtar Mulyono Mulyono Mulyono, Mulyono Nadya Ramadhani Niken Andini Nofertinus Zai, Fidelis Novalia, Essa Nuhrul Huda, Ella Nur Fitriani Nur Halimah Matondang Nur Hidayah Br Karo Nurul Maulida Surbakti Pajariah, Sri Putri Parapak, R Putri Angela Paula Putri Vansia Br. Siahaan Purba, Feronika Paska Putri Sonia Br. Simarmata Rahmadani, Ulfy Rima Aprilia Riri Syafitri Lubis Roder, Klause Said . Iskandar Saraski, Silvya Ajeng Sartika, Dewi . Sihaloho, Ruth Salisa Silaban, Indah Puspita Silalahi, Taruli Marito Simamora, Elmanani Simanungkalit, Devi Febriany Simarmata, Putri Sonia Siregar, Rudi Siti Nurhaliza Sri Dewi Sri Wahyuni Suci Rachmadini, Haliza Syarida Aini, Desti Tri Andri Hutapea Ulfah, Indi Fauziati Ulfy Rahmadani Widyasari, Rina Zulfahmi Indra, Zulfahmi