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Optimasi Rata-rata Produksi Jagung di Kabupaten Limapuluh Kota Menggunakan Pemrograman Kuadratik Metode Wolfe 50个城市地区的平均玉米产量优化使用了Wolfe法的象限编程
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14216
Sariani Fitri, Helma Helma
{"title":"Optimasi Rata-rata Produksi Jagung di Kabupaten Limapuluh Kota Menggunakan Pemrograman Kuadratik Metode Wolfe","authors":"Sariani Fitri, Helma Helma","doi":"10.24036/unpjomath.v8i2.14216","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14216","url":null,"abstract":"This research was an experimented research that purpose to form a mathematical model for optimizing average corn production in Fifty Cities District with the constraint that the harvested area should not be more than the planted area and solve the model with the Wolfe quadratic programming method. The model of mathematical in the research was a model by formed nonlinear using the method of least squares. Then use the Wolfe method to form a new linear objective function and constraints in the form of Karush Kuhn-Tucker conditions. The results showed that the optimal average corn production in Fifty Cities District was 49.00456 tons/Ha with an optimal corn harvest area of 656.256 Ha.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121366065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model Matematika Penyebaran Online Compulsive Buying Disorder 模特Matematika Penyebaran在线强迫性购买障碍
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14338
L. Puspita, Arnellis Arnellis
{"title":"Model Matematika Penyebaran Online Compulsive Buying Disorder","authors":"L. Puspita, Arnellis Arnellis","doi":"10.24036/unpjomath.v8i2.14338","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14338","url":null,"abstract":"ABSTRACT Online compulsive buying disorder is a disorder of impulse control when shopping online, so that a person becomes uncontrollable when shopping online and is done repeatedly with a large number of purchases and not so useful. The purpose of this study is to analyze the mathematical model of the spread of online compulsive buying disorder. The method used is the descriptive method. Based on the analysis of the mathematical model of the spread of online compulsive buying disorder, one equilibrium point was obtained, where all eigenvalues of the Jacobi matrix were negative, so that the equilibrium point of the mathematical model of the spread of online compulsive buying disorder was stable asymptotic. This suggests that the spread of online compulsive buying behavior will go towards the equilibrium point over time.     ","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115622178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MODEL DEPENDENSI HARGA-HARGA KOMODITAS EKSPOR UNGGULAN INDONESIA MENGGUNAKAN PENDEKATAN COPULA 印尼大宗商品出口价格依赖模式采用了co亦的方法
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14860
Riri Sesiati, J. Rizal, Yulian Fauzi
{"title":"MODEL DEPENDENSI HARGA-HARGA KOMODITAS EKSPOR UNGGULAN INDONESIA MENGGUNAKAN PENDEKATAN COPULA","authors":"Riri Sesiati, J. Rizal, Yulian Fauzi","doi":"10.24036/unpjomath.v8i2.14860","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14860","url":null,"abstract":"  The export of non-oil and gas leading commodities (palm oil, rubber and cocoa) contributes the largest state revenue. Copula is used to model the dependency between two variables that have different marginal distributions. The data to be used is secondary data from the Commodity Futures Trading Supervisory Agency (BAPPEBTI) starting from January 1, 2018 - February 28, 2020 for the period before the Covid-19 pandemic and March 1, 2020 - November 26, 2021 for the period after the Covid-19 pandemic. The dependency of the two variables to be measured is the price of palm oil, rubber and cocoa before and after the start of the Covid-19 pandemic in Indonesia. The Copula that will be used are Joe, Gumbel, Frank, Gaussian, Clayton, and Student's t. The best Copula model obtained for palm oil and rubber dependencies is the Joe Copula, while palm oil and cocoa and cocoa rubber dependencies are the Clayton Copula.  ","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"288 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121074802","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Matriks Toeplitz dan Determinannya Menggunakan Metode Salihu Toeplitz的矩阵和它使用Salihu方法的决定论
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14240
Miftahul Jannah, Yusmet Rizal
{"title":"Matriks Toeplitz dan Determinannya Menggunakan Metode Salihu","authors":"Miftahul Jannah, Yusmet Rizal","doi":"10.24036/unpjomath.v8i2.14240","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14240","url":null,"abstract":"The matrix is a rectangular array of numbers. In this range the numbers are called the entries of the matrix. In matrix calculations generally focus on square-shaped matrices. There is a matrix called the Toeplitz matrix. The Toeplitz matrix has the same operations and calculations as a square matrix in general, one method for calculating the determinant is the Sarrus method. There is an alternative method to solve the determinant of the matrix, namely the Salihu determinant. The purpose of this research is to know the determinant properties related to the Toeplitz matrix and to know the determinant of the n×n Toeplitz matrix with n≥3 using the Salihu method. The result of this study is that the completion of the Toeplitz matrix determinant calculation will produce the same value as the determinant calculation using the cofactor expansion method.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"278 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125731610","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Tinjauan Produksi Daerah Penghasil Kelapa Sawit di Sumatera Barat dengan Analisis Profil 通过分析分析西苏门答腊棕榈油生产区域
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14282
Inshanul Fadhila, Helma Helma
{"title":"Tinjauan Produksi Daerah Penghasil Kelapa Sawit di Sumatera Barat dengan Analisis Profil","authors":"Inshanul Fadhila, Helma Helma","doi":"10.24036/unpjomath.v8i2.14282","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14282","url":null,"abstract":"Palm oil is an important industrial plant and has a benefits of palm oil as the main raw material for cooking oil, increasing the country's foreign exchange and as a mainstay commodity of non-oil and gas exports. West Sumatra has 19 regencies and cities, but only 14 regencies and cities that produce palm oil. There is a high inequality in average productivity, so it is necessary to describe the ideal production of productive land area and oil palm production in West Sumatera using profile analysis. This study aims to determine the results of profile analysis in districts/cities in West Sumatra that produce palm oil. The results are the comparison of production and ideal production of the average land area in West Sumatra is not the same. There are three types of regions based on the level of optimization as follows: (1) non-optimal areas, namely West Pasaman Regency,  Sijunjung, Agam, Pesisir Selatan, Pasaman, and Dharmasraya Regencies (2) almost optimal areas, namely Lima Puluh Kota Regency. (3) optimal areas are Solok Regency, Padang Pariaman, South Solok, Padang City, Solok City, Sawahlunto City, and Pariaman City.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117004573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model Matematika Penyebaran Penyakit Infeksi Saluran Pernapasan Akut (ISPA) Berdasarkan Lokasi Anatomi Akibat Bakteri Streptococcus Pneumoniae 急性呼吸道感染(ISPA)的数学模型基于链球菌肺炎菌的解剖位置
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14330
Diana Leris, Media Rosha
{"title":"Model Matematika Penyebaran Penyakit Infeksi Saluran Pernapasan Akut (ISPA) Berdasarkan Lokasi Anatomi Akibat Bakteri Streptococcus Pneumoniae","authors":"Diana Leris, Media Rosha","doi":"10.24036/unpjomath.v8i2.14330","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14330","url":null,"abstract":"Streptococcus pneumoniae is a bacterium that attacks the human respiratory tract. Streptococcus pneumoniae bacteria cause respiratory diseases in the form of pneumonia, otitis media, sinusitis, sepsis, peritonitis, and abscesses. The purpose of this study was to establish, analyze, and interpret the mathematical model of the spread of Acute Respiratory Infections (ARI) based on the anatomical location of the Streptococcus pneumoniae bacteria. In the mathematical population formation model, the human population is divided into six population groups: susceptible, exposes, sinusitis infections, otitis media infections, pneumonia infections, and recovered.  An analysis of the stability of the system around the equilibrium point produces two points, namely, disease-free points, which will be asymptotically stable if βπ0.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134087276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Kajian Analisis Faktor pada Faktor yang Mempengaruhi Produksi Padi di Nagari Cupak Kabupaten Solok 分析影响Solok Nagari Cupak产量的因素
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14213
Rohadatul Aisy, Devni Prima Sari
{"title":"Kajian Analisis Faktor pada Faktor yang Mempengaruhi Produksi Padi di Nagari Cupak Kabupaten Solok","authors":"Rohadatul Aisy, Devni Prima Sari","doi":"10.24036/unpjomath.v8i2.14213","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14213","url":null,"abstract":"Solok district is the largest rice producing center in West Sumatra, known as \"Bareh Solok\", with most of the population working as farmers. Increased production is influenced by factors such as land area, labor, seeds, fertilizers, capital, pesticides, and irrigation. These seven factors are interconnected and related to each other, so the purpose of this study was to determine the factors that influence rice production in Nagari Cupak, Gunung Talang District, Solok Regency. The type of research used is applied research. This study has a sample of 89 respondents. Furthermore, in the analysis using factor analysis method. The results of this study indicate that the first factor consists of land area, labor, seeds and pesticides. The second factor consists of fertilizer, capital and pesticide variables","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"143 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116309206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
ANALISIS KEMISKINAN EKSTREM PROVINSI BENGKULU MENGGUNAKAN METODE GEOGRAPHICALLY WEIGHTED REGRESSION (GWR) DENGAN PEMBOBOT ADAPTIVE GAUSSIAN KERNEL DAN ADAPTIVE BI-SQUARE
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14914
Riki Wahyudi, Yulian Fauzi, José Rizal
{"title":"ANALISIS KEMISKINAN EKSTREM PROVINSI BENGKULU MENGGUNAKAN METODE GEOGRAPHICALLY WEIGHTED REGRESSION (GWR) DENGAN PEMBOBOT ADAPTIVE GAUSSIAN KERNEL DAN ADAPTIVE BI-SQUARE","authors":"Riki Wahyudi, Yulian Fauzi, José Rizal","doi":"10.24036/unpjomath.v8i2.14914","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14914","url":null,"abstract":"Extreme poverty is a condition of inability to fulfill basic needs, namely the need for food, clean drinking water, proper sanitation, health, shelter, education, and access to information which is not only limited to income, but also access to social services (United Nations, 1996).Geographically Weighted Regression (GWR) model is used in mapping extreme poverty of all level 2 regions in Bengkulu Province using Adaptive Gaussian Kernel and Adaptive Bi-Square weights as well as finding the best GWR model and analyzing the model against extreme poverty mapping of Bengkulu Province. The data used in this study is the March 2022 Susenas data. Of the 18 variables that allegedly affect extreme poverty, only 6 variables support the assumption of spatial heterogeneity in GWR modeling. Based on the selection of the best model, it is known that the GWR model with Adaptive Bisquare Kernel weighting is a suitable model for the percentage of extreme poor people in Bengkulu Province with the smallest AIC value","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131290851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimasi Penjadwalan Perawat IGD RSUD Arosuka dengan Metode 0-1 Fuzzy Goal Programming 目前已安排的护理护理护理护理方法是0-1模糊的目标设计
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14441
Intan Ayu Ramadhani, Yusmet Rizal
{"title":"Optimasi Penjadwalan Perawat IGD RSUD Arosuka dengan Metode 0-1 Fuzzy Goal Programming","authors":"Intan Ayu Ramadhani, Yusmet Rizal","doi":"10.24036/unpjomath.v8i2.14441","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14441","url":null,"abstract":"Nurse scheduling problem is an important aspect in maintaining the quality of hospital services. The fact that the number of patients is greater than the limited number of nurses and there are rules from the hospital that must be complied with makes the nurse scheduling problem more complex. The purpose of this study was to the shape of the model and the results of optimizing the scheduling of emergency room nurses at Arosuka Hospital using the method 0-1 Fuzzy Goal Programming. Model 0-1 Fuzzy Goal Programming is the result of the application of set theory Fuzzy on Goal Programming that uses a decision variable of 0 or 1. By completing the scheduling model with help  LINGO 20.0 software, the results show that with the methodl 0-1 Fuzzy Goal Programming has fulfilled all existing constraints, and can maximize all objectives. In the manual schedule there are sixty one activities which not corresponding with the policy, while with the 0-1 Fuzzy Goal Programming model it has been minimized so that there are only thirty three activities which not corresponding with the policy.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115235885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Model Penyebaran Rumor di Media Sosial 社交媒体上散布谣言的模式
Journal of Mathematics UNP Pub Date : 2023-07-10 DOI: 10.24036/unpjomath.v8i2.14515
Tasya Salsabilla Harista, Muhammad Subhan
{"title":"Model Penyebaran Rumor di Media Sosial","authors":"Tasya Salsabilla Harista, Muhammad Subhan","doi":"10.24036/unpjomath.v8i2.14515","DOIUrl":"https://doi.org/10.24036/unpjomath.v8i2.14515","url":null,"abstract":"Rumors are information that spreads widely without any confirmation of truth and definite facts. One of the media that is used in rumors spreading is social media. The negative impact raised by rumors spreading through social media is the disruption of social stability, economic systems, and politics. The research purpose is to analyze the rumor spreading model on social media. This research is basic research (theoretical) using descriptive methods. The analytical results are obtained of a rumor-free equilibrium point and a rumor spread equilibrium point, each of which is asymptotic stable.  The basic reproduction number obtained by the rumor will spread if the rate of movement of the population of individual who never hear the rumor or counter-rumor increases and became a individual who have been exposed to the rumor or counter-rumor.","PeriodicalId":244588,"journal":{"name":"Journal of Mathematics UNP","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127205232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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