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Journal of Mathematics UNP
Published by Universitas Negeri Padang
ISSN : 23551658     EISSN : 28073460     DOI : http://dx.doi.org/10.24036/unpjomath.v7i3.12564
Core Subject : Science, Education,
Computer Science & IT Decision Sciences, Operations Research & Management Mathematics
Journal of Mathematics UNP is a journal to publish article from student researches in UNP Mathematics study program, and we also kindly accept other article from outside of our study program related to Mathematics: consists of publication in Algebra, Analysis, Combinatoric, Geometry, Differential Equations, Graph and/or Mixed Mathematics Applications: consists of publication in Application of Differential Equations, Mathematics Modelling, Mathematics Physics, Mathematics Biology, Financial Mathematics, Application of Graph and Combinatorics, Optimal Control, Operation Research, and/ or Mixed Statistics: consists of publication on Development and/ or Application of statistics in various aspects.
Arjuna Subject : Matematika - Matematika (Lain-Lain)
Articles 404 Documents
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Statistical Quality Control pada Produk Air Minum dalam Kemasan Merek X di CV XYZ Diantami, Melati; Rosha, Media
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.14454

Abstract

Bottled water is one alternative that can be used to meet the clean water needs in society. X brand of bottled water is one of the brands circulating in West Sumatra. Based on the quality requirements of SNI 01-3553-2015, pH and the amound of dissolved subtances are some aspects that can cause some diseases if they do not meet the set standards. In addition, the volume of water in each package must be in accordance with what is stated on the package. This study aims to determine the quality of bottled water products using the  and  control charts in statistical quality control. The research sample was obtained from CV XYZ in Padang. The research instrument used measurement tools such as measuring glasses, dropper, digital pH meter and TDS meters. The results showed that all variables were not controlled based on the  and  control charts.
Determining The Determinant Value Of The Matrix m x n Using Java Rahmatullah, Saffa; Rizal, Yusmet
Journal of Mathematics UNP Vol 9, No 1 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i1.15326

Abstract

One of the important topics in algebraic mathematics is determining the determinant value of a matrix. In this case, the determinant of an m x n matrix or rectangular matrix is also called the Radic determinant. The calculation of the determinant of a rectangular matrix requires lengthy analysis and calculations if searched manually it will take a long time. The purpose of this research is to obtain a determinant algorithm of m x n matrix which is then implemented into a program and will be executed with Java programming language. This research is basic that uses literature review as its foundation and uses theoretical analysis related to the problem of programming algorithms and determining the determinant value of the m x n matrix using the Java language. The result of this research is a Java program to determine the determinant value of m x n matrix with conditions m is less than or equal to n.
Optimasi Pendistribusian Beras Bansos Menggunakan Metode Improved Zero Point di Perum Bulog Kantor Cabang Padang Sidempuan BATUBARA, RISKA AMALIA; Winanda, Rara Sandhy
Journal of Mathematics UNP Vol 9, No 1 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i1.15448

Abstract

Social Assistance Rice is a type of Government Rice Reserve rice which is provided free of charge to Beneficiary Families. Perum Bulog Padang Sidempuan Branch Office is tasked with providing and distributing Social Assistance Rice to destination Regency orCity. In distributing social assistance rice to destination areas, it costsquite a lot, namely Rp. 178.843.350. This includes transportation problems that can be solved using transportation methods. The application of the transportation method means obtaining an allocation of distribution of goods that can minimize total transportation costs. One method of transportation is the Improved Zero Point method which is a direct method without looking for an initial solution first and this method is good and efficient to use to get the optimal solution. From calculations using the Improved Zero Point method, the costs incurred are Rp. 177.971.180. So implementing this method can save distribution costs of Rp. 872.170.
Penerapan Metode Modified Distribution dengan Metode Vogel’s Approximation Sebagai Solusi Awal Pada Optimasi Biaya Transportasi UD Salim Abadi Lampung Cahyanti, Alfiana; Helma, Helma
Journal of Mathematics UNP Vol 9, No 2 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i2.12520

Abstract

Transportation problems are common issues faced by companies in the goods delivery process. UD Salim Abadi Lampung is a company engaged in marketing agricultural products. The company operates three central warehouses and seven branch warehouses, with annual transportation costs amounting to Rp. 357,184,000. The purpose of this research is to determine the optimal transportation cost, develop a transportation model, and ascertain the quantity of supplied goods. The method used is the Modified Distribution (MODI) method, with Vogel’s Approximation Method (VAM) as the initial solution. Both methods are part of the transportation method used to solve transportation problems. In this research, using VAM as an initial solution resulted in a cost of Rp. 343,334,786.5, while the MODI method, used for the optimal solution, resulted in a cost of Rp. 327,066,161.4. Therefore, based on the optimal solution, UD Salim Abadi Lampung can save Rp. 30,117,838.60 in annual transportation costs for distributing goods.Keyword : Transportation Cost Optimization, Transportation Method, Vogel’s Approximation Method, Modified Distribution Method
Model Matematika SEIRS-SEI Penyebaran Penyakit Leptospirosis dengan Pengaruh Curah Hujan Arsiyandi, Ashraff; Rosha, Media
Journal of Mathematics UNP Vol 9, No 2 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i2.14609

Abstract

Leptospirosis is an illness spread from animals to humans brought on by Leptospira sp. This illness is widespread and can be found anywhere there is human habitation, although it is notably prevalent in the rainy Southeast Asian countries. The goal of this modelling is to analyse the results of mathematical models of the spread of leptospirosis illness under the effect of rainfall and to understand the implications of those results. This study offers a theoretical analysis of a fundamental problem in epidemiology: the spread of leptospirosis in response to rainfall. This study shows that rainfall has a significant impact on leptospirosis rates. The analysis of fundamental reproductive value demonstrates this effect, showing that an increase in rainfall leads to an epidemic of leptospirosis.
Faktor-Faktor Yang Mempengaruhi Angka Gizi Buruk Pada Balita Di Sumatera Barat Menggunakan Metode All Possible Regression Dari Regresi Linier Putri, Nurlailatika; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.14919

Abstract

Currently in Indonesia., health problems are in the spotlight is the high mortality rate in children aged 0-59 month. This problem is caused by malnutrition thar occurs in children in this age group. Solving the problem of malnutrition is a serious challenge in West Sumatra Province which is influenced by various factors that play a role in the problem. This research aims to .determine what are the causes of malnutrition in the West Sumatra region. The approach used is the All Possible Regression method of linear regression, taking into account .factors such as toddlers with low birth weight (x1), exclusive breastfeeding (x2), vitamin A suplemetation (x3), and antenatal visits to pregnant women (x4). According to the research results, a multiple linear regression model has been obtained to identify factors that have an influence on malnutrition rates in toddlesr  in West Sumatra as follows: y = 3,95 - 0,0406 x4So, antenatal visits to pregnant women (x4) have a significant effect on the incidence malnutrition in toddlers in West Sumatra with a level of error 5%.
Faktor-Faktor yang Mempengaruhi Balita Stunting di Puskesmas Kampung Guci Menggunakan Regresi Probit Biner Pratama, Lisya; Helma, Helma
Journal of Mathematics UNP Vol 9, No 1 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i1.15374

Abstract

A toodler who is stunted will be shorter than a typical toddler in both height and length. Stunting result in pathological alterations marked by growth that are outside of what is expected, having both short and long term effects. Utilizing binary probit regression, this research attempts to determine the srtucture of the model, the variables that have the highest probability of stunting, and the causes (factors) that cause toodler stunting in Puskesmas Kampung Guci. This research is applied research. This research uses primary data from a sample of 85 toddlers using the accidental sampling technique. According to research findings, exclusive breastfeeding, immunization, healthy latrines, and comorbidities are the variables (factors) that effect toddler stunting at the Puskesmas Kampung Guci.
Model Regresi Multivariat pada Tingkat Kesejahteraan Masyarakat di Sumatera Barat Zain, Wardinatul; Murni, Dewi
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.14305

Abstract

Studi Kualitatif Persamaan Rayleigh Martunus, Rapi Amiko
Journal of Mathematics UNP Vol 9, No 1 (2024): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v9i1.12648

Abstract

Rayleigh's equations have many applications in physics and electromechanics. In the field of physics can be seen such as optics, vibration systems, sound, wave theory, color vision, electrodynamics, electromagnetism, light scattering, fluid flow, hydrodynamics, photography, as well as waves and frequencies, also applied in the fields of health, agriculture, biology, astronomy. This study aims to determine the fixed point and prove the existence of a periodic solution and analyze the condition of the Rayleigh equation system around the fixed point. The Rayleigh equation is transformed into a first-order differential equation to obtain a fixed point, and using an approximation to the Van Der Pool equation it is proved that the Rayleigh equation has a single periodic solution. The Rayleigh equation has one periodic solution and has one fixed point, the origin. The condition of the system around a fixed point is said to be unstable which is shown analytically by changing the value of the parameter to the eigenvalues. Geometrically it is shown that the phase portrait moves away from a fixed point and exits towards the periodic solution where the periodic solution is said to be stable.
Peramalan Jumlah Produksi Bawang Merah Provinsi Sumatera Barat Menggunakan Metode Triple Exponential Smoothing Tipe Brown Rahmadani, Suci; Helma, Helma
Journal of Mathematics UNP Vol 8, No 4 (2023): Journal Of Mathematics UNP
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/unpjomath.v8i4.15339

Abstract

Onion (Allium Ascalonicum L) is an important food ingredient that is widely used by the community and has a high market value. The increase in population in West Sumatra province every year has an impact on the need for onion. The amount of onion consumption is greater than the amount of production which causes unmet community needs for onion. This study aims to model onion production forecasts using the Brown Type Triple Exponential Smoothing technique and estimate onion production in West Sumatra province from  based on the model that has been obtained. The smoothing parameter is , which is used in the quantitative forecasting process known as the Brown Type Triple Exponential Smoothing technique. After the data is analyzed and processed, it can be concluded that the results of the onion production forecast for 2023 to 2027 are 242.872,32 ton, 275.231,24 ton, 309.726 ton, 346.356,60 ton and 385.123,04 ton respectively. 

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