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WINTERS EXPONENTIAL SMOOTHING UNTUK FORECASTING HARGA SAHAM PT ASTRA INTERNATIONAL TBK 温特斯指数平滑法（Winters exponential smoothing untuk forecasting harga saham pt astra international tbk
Jurnal Ilmiah Matematika dan Pendidikan Matematika Pub Date : 2024-01-17 DOI: 10.20884/1.jmp.2023.15.2.8834
Noor Sofiyati, A. Hayati, Nur’aini Muhassanah
{"title":"WINTERS EXPONENTIAL SMOOTHING UNTUK FORECASTING HARGA SAHAM PT ASTRA INTERNATIONAL TBK","authors":"Noor Sofiyati, A. Hayati, Nur’aini Muhassanah","doi":"10.20884/1.jmp.2023.15.2.8834","DOIUrl":"https://doi.org/10.20884/1.jmp.2023.15.2.8834","url":null,"abstract":"Investing in the stock market is one of the investment options that are in great demand by investors. Investors generally invest because want to gain profits which can be seen from the stock returns. On the other hand, there is a risk of loss if the investor makes the wrong decision. Investors need accurate information, predictions and a sense of security in stock transactions. Investors or shareholders need to know the development of stock prices in the future with forecasts to anticipate large losses. This study aims to predict the share price of PT. Astra International Tbk (ASII.JK) one year ahead using the winters exponential smoothing method. Forecasting results show that ASII's share price for the next year will increase every month. This can provide information on future stock movements for investors as a consideration for investing in these stocks.","PeriodicalId":516586,"journal":{"name":"Jurnal Ilmiah Matematika dan Pendidikan Matematika","volume":"185 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140504917","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
THE NEWTON-RAPHSON METHOD OF REAL-VALUED FUNCTIONS IN DISCRETE METRIC SPACE 离散度量空间实值函数的牛顿-拉夫逊方法
Jurnal Ilmiah Matematika dan Pendidikan Matematika Pub Date : 2024-01-15 DOI: 10.20884/1.jmp.2023.15.2.8875
Indra Herdiana, I. Sihwaningrum, Agus Sugandha
{"title":"THE NEWTON-RAPHSON METHOD OF REAL-VALUED FUNCTIONS IN DISCRETE METRIC SPACE","authors":"Indra Herdiana, I. Sihwaningrum, Agus Sugandha","doi":"10.20884/1.jmp.2023.15.2.8875","DOIUrl":"https://doi.org/10.20884/1.jmp.2023.15.2.8875","url":null,"abstract":"This paper studies the Newton-Raphson method to approximate a root of a real-valued function in one-dimensional real discrete metric space. The method involves a derivative and is considered to be convergent very fast. However, the derivative is derived from the limit definition with respect to the Euclidean distance, different from that of the discrete metric space. This research investigates the Newton-Raphson method with respect to derivatives defined in discrete metric spaces by deriving the derivative first. The results show that the constructed Newton-Raphson method can be an alternative root-finding method exemplified by some examples. \u0000Keywords: Newton-Raphson method, discrete metric space, metric space derivative","PeriodicalId":516586,"journal":{"name":"Jurnal Ilmiah Matematika dan Pendidikan Matematika","volume":"9 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140508248","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
KONTROL OPTIMAL MODEL LESLIE-GOWER DENGAN PEMANENAN PADA POPULASI PREDATOR DAN PERLINDUNGAN PADA PREY 捕食者数量减少和保护猎物的莱斯利-高尔模型的优化控制
Jurnal Ilmiah Matematika dan Pendidikan Matematika Pub Date : 2024-01-15 DOI: 10.20884/1.jmp.2023.15.2.8536
M. Huda, Sri Wigantono, Syaripuddin Syaripuddin, Riza F. Ramadhan
{"title":"KONTROL OPTIMAL MODEL LESLIE-GOWER DENGAN PEMANENAN PADA POPULASI PREDATOR DAN PERLINDUNGAN PADA PREY","authors":"M. Huda, Sri Wigantono, Syaripuddin Syaripuddin, Riza F. Ramadhan","doi":"10.20884/1.jmp.2023.15.2.8536","DOIUrl":"https://doi.org/10.20884/1.jmp.2023.15.2.8536","url":null,"abstract":"This paper studied the Leslie-Gower predator-prey model with the effects of prey refuge and linear harvesting on predator populations. Prey populations grow as a logistic model when there is no interaction with predators. The predator population is assumed to have economic value. Analysis of Bionomic and Harvesting Control have been studied further. The results showed that the protective effect of prey had an effect on harvesting activity in the population so that it affected profits in predatory harvests. Simulation of several calculations is given to purchase the analysis results","PeriodicalId":516586,"journal":{"name":"Jurnal Ilmiah Matematika dan Pendidikan Matematika","volume":"8 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140508307","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 FRAKSIONAL PREDATOR-PREY PADA KAWASAN KONSERVASI PERAIRAN 海洋保护区中的分数捕食者-猎物模型
Jurnal Ilmiah Matematika dan Pendidikan Matematika Pub Date : 2024-01-15 DOI: 10.20884/1.jmp.2023.15.2.7853
Rido Trimanto, Yudi Ari Adi
{"title":"MODEL FRAKSIONAL PREDATOR-PREY PADA KAWASAN KONSERVASI PERAIRAN","authors":"Rido Trimanto, Yudi Ari Adi","doi":"10.20884/1.jmp.2023.15.2.7853","DOIUrl":"https://doi.org/10.20884/1.jmp.2023.15.2.7853","url":null,"abstract":"Makalah ini membahas model pemangsa-mangsa di kawasan konservasi perairan dalam orde fraksional menggunakan turunan Caputo Fabrizio. Tujuan dari penelitian ini adalah untuk mempelajari dinamika populasi di kawasan konservasi. Berdasarkan model, kami memperoleh tiga titik kesetimbangan. Dari model tersebut diperoleh bahwa titik kesetimbangan kepunahan semua subpopulasi tidak stabil. Sementara iti, titik keseimbangan kepunahan populasi predator adalah stabil asimtotik lokal dengan kondisi tertentu. Selanjutnya untuk titik kesetimbangan dengan semua populasi ada stabil secara global asimtotik jika memenuhi kondisi tertentu. Simulasi numerik dilakukan dengan menggunakan metode Adams Bashfort tiga langkah dengan turunan Caputo Fabrizio untuk mendukung hasil teoritis. Simulasi menunjukkan bahwa semakin kecil order semakin mempercepat populasi konvergen ke titik kesetimbangan.","PeriodicalId":516586,"journal":{"name":"Jurnal Ilmiah Matematika dan Pendidikan Matematika","volume":"152 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139640456","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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