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Square : Journal of Mathematics and Mathematics Education
Published by Universitas Islam Negeri Walisongo Semarang
ISSN : 2714609X     EISSN : 27145506     DOI : 10.21580
Core Subject : Education,
Education Mathematics
Square : Journal of Mathematics and Mathematics Education menerbitkan artikel kajian di bidang pendidikan matematika dan kajian matematika
Arjuna Subject : Matematika - Aljabar dan Teori Bilangan
Articles 20 Documents
 1   2 
Search results for , issue "Vol. 6 No. 2 (2024)" : 20 Documents clear
Penerapan Metode Big M dalam Pengoptimalan Hasil Produksi dan Analisis Sensitivitas (Studi Kasus: UMKM Rempeyek Ilham Jambi) Ningsih, Wahyu; Rozi, Syamsyida; Multahadah, Cut
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.13916

Abstract

In industrial businesses, a strategy for optimizing production results is an important thing to consider carefully so that the production process runs as efficiently as possible and the results obtained are feasible and optimal. This also needs to be a consideration for UMKM Rempeyek Ilham which are engaged in the production of peanut brittle. So, the aim of this research is to identify the number of optimal productions at UMKM Rempeyek Ilham so that maximum sales results can be obtained through modeling in the form of a linear program. However, the constraints formed in the linear programming model have sign of ≥, which cannot be resolved using the simplex method. One method that can be used to find a feasible and optimal solution for a linear programming model that has constraints ≥ is the Big M method. Therefore, in this research the Big M method is applied to find a feasible and optimal solution to the linear programming model. This research produces information about the number of optimal productions of peanut brittle with maximum sales of IDR 6,800,000.00. Furthermore, in this research a sensitivity analysis was also carried out to anticipate several possible changes that would occur so that the optimal solution obtained did not change or could even increase.Keywords: Big M method, Linear programming, Optimization, Sensitivity analysis.
Mengupas Etnomatematika pada Bangunan Masjid Raya Tanjung Pauh Hilir Kerinci Asdamayanti, Nurul; Yulianti, Putri; Rusliah, Nur; Anggraini, Reri Seprina
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.14171

Abstract

Mathematics with the nuances of ethnomathematics culture at this time its presence makes a major contribution to the learning of mathematics. This research was conducted to find the elements of mathematics in the building of the grand mosque which is located in Tanjung Pauh Hilir, West Lake Kerinci sub-district, Kerinci district, Jambi province. This study uses a qualitative method with an ethnographic approach. The data used are data obtained from observation, documentation and interviews. The results showed that the mathematical concepts in this mosque building contained geometrical materials such as ellipses, rhombuses, circles, semicircles, squares and rectangles while geometrical materials contained such as octagonal prisms, beams and pyramids and also transformations such as reflections. With the existence of ethnomathematics in this building it is hoped that it will be able to improve mathematical abilities, instill local wisdom values and also through observing mosque buildings in being able to explain that cultural elements can be used in learning mathematics.Keywords: Ethnomathematics, Building, Tanjung Pauh Grand Mosque.
Penerapan Sistem Pakar Menggunakan Metode Certainty Factor untuk Diagnosis Penyakit pada Tanaman Jagung Fivalianda, Dido; Desiani, Anita
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.16042

Abstract

Diseases in corn plants are a major factor contributing to suboptimal corn production and can even lead to crop failure. Common diseases in corn include downy mildew and leaf blight. Downy mildew in corn is characterized by symptoms such as khorotil-colored streaks running parallel to the leaf veins, white spots, inhibited growth, and rolled leaves. These symptoms prevent optimal corn growth and may result in total crop failure. This research focuses on developing an expert system to diagnose corn diseases using the Certainty Factor (CF) method. The CF method is designed to provide a degree of certainty in diagnosis or analysis based on symptoms or evidence, especially in situations with limited absolute certainty. The system developed in this study achieves an accuracy rate of 68.74% for diagnosing leaf blight in corn.Keywords: expert system, CF, corn crop disease, downy mildew, leaf blight.
Implementasi Etnomatematika Berbasis Alat Kesenian Rebana untuk Memfasilitasi Kemampuan Matematis Siswa: Systematic Literature Review Nisa', Isna Luthfi Atin; Malasari, Putri Nur
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.21968

Abstract

Ethnomathematics serves as a bridge connecting culture, education, and mathematics. It involves leveraging cultural artifacts and practices to enhance mathematical understanding. The concept of ability refers to an individual's capacity to perform tasks effectively in various contexts. Numerous studies have explored the implementation of cultural artifacts, such as reed art tools, to support students' mathematical skills. However, questions remain regarding the validity of these tools in facilitating mathematical competence. This study aims to evaluate students' mathematical abilities by examining the application of ethnomathematical principles in the context of tambourine art as a cultural and artistic instrument. A Systematic Literature Review (SLR) methodology was employed, with data collected from nine journal articles retrieved from Google Scholar. The findings indicate that ethnomathematical approaches using tambourine art are effective in enhancing students' mathematical abilities, particularly at the elementary and junior high school levels.Keywords: ethnomathematics, tambourine, mathematical ability.
Indeks Topologi Padmakar Ivan dan Szeged pada Graf Koprima Prima dari Grup Bilangan Bulat Modulo Abdurahim, Abdurahim; Pratiwi, Lia Fitta; Karang, Gusti Yogananda; Wardhana, I Gede Adhiya Wisnu; Irwansyah, Irwansyah; Awanis, Zatta Yumni; Romdhini, Mamika Ujianita
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.22836

Abstract

The Prime Coprime Graph is defined as a graph in which two distinct vertices are adjacent if and only if the greatest common divisor of their orders is 1, indicating that they are coprime. This research focuses on deriving general formulas for the Padmakar-Ivan index and the Szeged index for the coprime prime graph of the modulo integer group with n=p^k, where p is a prime number and k is not less than 2. As a result of this study, explicit formulas for the Padmakar-Ivan and Szeged indices were obtained, along with an analysis of the relationship between these two indices.Keywords: prime coprime graph, Padmakar-Ivan index, Szeged index.
Optimasi Rute Pendistribusian Barang Menggunakan Kombinasi Algoritma Branch and Bound dan Cheapest Insertion Heuristic Oeitama, Whennie Youngger; Oeitama, Whannie Youngger; Sitandi, Flora Frisilia; Mas'ud, Syamsuddin
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.22992

Abstract

The problem that often occurs in the process of distributing goods is that the distribution route is not optimal which results in higher costs and longer travel times. This can be solved by finding the shortest path that can be passed or widely recognized as the Traveling Salesman Problem (TSP). This study aims to determine the optimal distribution route for goods using a combination of the Branch and Bound and Cheapest Insertion Heuristic algorithms. The data used are in the form of location names and distances between locations that have been collected by Putra BJ Bangun in his research entitled Solving the Traveling Salesman Problem (TSP) with the Branch and Bound Method (Application of the Palembang Post Office Goods Transportation Problem). The results of the research indicate that the optimal route for the distribution of goods at the Palembang City Post Office, using a combination of both algorithms, is: KPRK Palembang → KPC Kapt A. Rivai → KPC Pakjo → KPC Talang Ratu → KPC Sukarami → KPC Alang Lebar → KPC Sekip → KPC Cinde → KPRK Palembang, spanning a total of 24.3 km. This route can be an alternative for salesmen to visit several KPCs and return to KPRK, with more efficient costs and time because it is the shortest route. In addition, this combination of algorithms is more efficient and simpler in terms of processing steps and computing time compared to using the Branch and Bound algorithm.Keywords: Traveling Salesman Problem (TSP), Branch and Bound, Cheapest Insertion Heuristic, Algorithm Combination, Optimal.
Model Kontrol Pada Ekosistem Perkebunan Teh Diana, Arista Fitri; Romadan, Gilang; Khumaeroh, Mia Siti; Aulia, Lathifatul; Iktiyar, Zakaria Bani
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.23274

Abstract

Tea plants are one of the commodities in Indonesia. In their development, the plantation ecosystem is heavily influenced by several factors, both internal and external factors. In the field of applied mathematics, mathematical modelling can be used to analyze the development of tea plant growth and their interaction each othe in their ecosystem. The mathematical model in this research is combining three main models, there are logistic model, epidemiological model, and predator prey model by adding fungicide and insecticide controls. Furthermore, local stability analysis is carried out and the optimal control problem is solved by Pontryagin maximum principle. The results of the analysis obtained five equilibrium points. Local stability analysis was carried out using the Routh Hurwitz criteria which showed the fifth equilibrium point is locally asymptotically stable. The basic reproduction number in the model is 0,99. Because  it can be concludeed that there is no spread of disease in the tea plantation ecosystem after a period of 5 years. The control provided can reduce pest and disease attacks. After being given control, the population of infected tea plants decreased by 93,21%, Empoasca pests decreased by 99,47%, and leaf roller caterpillars decreased by 99,31% compared to the model that was not given control.Keywords: Tea Plantation, Dynamical Model, Fungicide, Insecticide, Optimal Control.
Proses Penalaran Matematis Siswa SMP dalam Statistika Saminanto, Saminanto; Suwarno, Muji; Septianah, Septianah; Aistafania, Aistafania
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.23575

Abstract

Mathematical reasoning is very important for students to master. This research aims to reveal students' mathematical reasoning processes in solving statistical problems. This research used a descriptive qualitative method involving 25 students from class VII-D of SMP Negeri 16 Semarang. The research instrument consists of mathematical problems related to statistics. Data collection was carried out through written tests and interviews. Data were analyzed by data reduction, data presentation, and drawing conclusions. The research results showed that 16% of students had high mathematical reasoning abilities, 72% of students had moderate mathematical reasoning abilities, and 12% of students had low mathematical reasoning abilities. Based on the results of interviews, the mathematical reasoning process of lower group students is hampered by the process of presenting mathematical statements verbally, drawings, sketches or diagrams; make allegations; checking the validity of an argument; and students' lack of understanding of mathematical concepts. The implications of the findings in this research can be used as a reference for developing appropriate learning strategies to overcome students' difficulties in the mathematical reasoning process. Keywords: reasoning process, mathematics, statistics.
Perbandingan MAPE Metode Arima dan FTS Chen pada Peramalan Harga Minyak Mentah Widuri di Indonesia Ikhtiyar, Zakaria Bani; Sulistijanti, Wellie; Sari, Silvia Novita; Mahiruna, Adiyah
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.23579

Abstract

The need for crude oil greatly affects economic activities on a micro and macro scale. Indonesia is one of the countries that produces crude oil, although the amount produced is not as large as countries in the Middle East. The global price of crude oil has a direct impact on Indonesia's rising fuel prices. To find out the world price of crude oil in the future, forecasting can be done. Widuri type crude oil is one of the crude oils that is a priority in Indonesia. This study compares the accuracy of forecasting the price of Widuri type crude oil with the MAPE accuracy calculation method and the forecasting method compared is the ARIMA method with the FTS Chen method.Keywords: forecasting, Oil, ARIMA, Fuzzy Time Series (FTS) Chen.
Prediksi Harga Saham Syariah dengan Triple Exponential Smoothing Multiplicative Sofiyati, Noor; Saputro, Isnu Aji; Puspita, Dian
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.23602

Abstract

The prediction of sharia stock prices is currently an important concern for investors who want to invest according to Islamic principles. Investors generally invest to achieve profits, which are measured by the magnitude of returns or the rate of return on those sharia-compliant stocks. However, there is also a risk of loss if the investor makes the wrong decision. Often, investors simply guess whether the stock price will go up or down. In sharia stock analysis, accurate forecasting techniques are needed to help investors minimize risk and maximize potential returns. This research aims to predict the stock price of Bank Syariah Indonesia (BRIS. JK), which is one of the sharia stocks highly sought after by stock investors. The prediction for the next year is conducted using the multiplicative triple exponential smoothing method as a guide for investors in decision-making. This method was chosen because of its ability to capture seasonal patterns and trends based on historical stock data.  The forecasting results show that the price of BRIS.JK shares will continue to rise over the next year. This provides valuable information for investors to consider investing in that stock. Keywords: predictions, sharia shares, triple exponential smoothing.

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