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All Journal Math Educa Journal Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains Journal of Science and Technology Mathematics and Applications (MAp) Journal
Hasibuan, Lilis Harianti
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Computer Science & IT Decision Sciences, Operations Research & Management Education Mathematics

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Perbedaan Motivasi Belajar melalui Pendekatan SAVI dengan Variasi Mengajar Stimulus Materi Dimensi Tiga Hasibuan, Lilis Harianti
Logaritma : Jurnal Ilmu-ilmu Pendidikan dan Sains Vol 7, No 02 (2019)
Publisher : IAIN PADANGSIDIMPUAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24952/logaritma.v7i02.2117

Abstract

Based on the results of the research of the questionnaire score of students learning motivation mathematics then obtained an average of 76 with standard deviation 4.50 in the experimental class applied SAVI approach and average 65 with standard deviation 4.38 on the control class applied Variation Teaching Stimulus. Normality test in experimental class L0 = 0,1296 and Ltabel = 0,1730 then L0 Ltabel (0,1296 0,1730) and at control class L0 = 0,1220 and Ltabel = 0,1730 then L0 Ltabel (0 , 1220 0.1730) so it can be concluded that student questionnaires of both classes are normally distributed. And homogeneity test results obtained Fhitung Ftabel that is (1.073 1.87). Seen from hypothesis test, the data of questionnaire motivation to learn mathematics thitung ttabel (9,13 1,674) which H1 accepted which mean there is difference of motivation learn mathematics between SAVI approach with Variation Teaching Stimulus in cube in class VIII student of SMP Negeri 1 Padang year lessons 2015-2016. The results of observations in the experimental class applied SAVI approach obtained an average of 31.81 with a percentage of 79.52% in both categorize and in the experimental class applied Variations Teaching Stimulus obtained an average of 27.4 with percentage 68, 5% is adequately.
PENERAPAN GERAK BROWN GEOMETRIK PADA DATA SAHAM PT. ANTM Putri, Darvi Mailisa; Hasibuan, Lilis Harianti
MAp (Mathematics and Applications) Journal Vol 2, No 2 (2020)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1174.481 KB) | DOI: 10.15548/map.v2i2.2258

Abstract

Penelitian ini akan mengkaji aplikasi gerak Brown geometrik pada data harga saham PT. Antm. Data harga saham yang digunakan adalah data harga saham penutupan dari tanggal 02 Januari 2019 sampai dengan 30 Desember 2019 dengan periode harian. Dalam mengaplikasikan data harga saham PT. Antm pada gerak Brown geometrik diperlukan nilai return harga saham yang memenuhi asumsi dari gerak Brown geometrik. Selanjutnya melalui parameter-parameter yang diperoleh dari return harga saham dan membangkitkan data berdistribusi normal atau  sebanyak data yang diamati dan harga awal yang telah diketahui maka didapat plot hasil dari data harga saham PT. Antm yang telah memenuhi asumsi gerak Brown geometik.AbstractThis research will examine the application of geometric Brownian motion on the stock price of  PT. Antm. The stock price data used is the closing stock price data from January 02nd 2019 to December 30th 2019 with a daily period. In applying the stock price of PT. Antm on geometric Brownian motion requires a stock price return value that satisfies the assumptions of geometric Brownian motion. Futhermore, through the parameters obtained from the stock price return and generate normally distributed data or   as much as the observed data and the known intial price, then we get the plot of  PT. Antm has fulfilled the assumption of geometric Brownian motion.
PENERAPAN SIFAT JARAK RUANG METRIK R^2 PADA LINGKARAN Rianjaya, Ilham Dangu; Hasibuan, Lilis Harianti; Sari, Indah Permata
MAp (Mathematics and Applications) Journal Vol 3, No 2 (2021)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (390.513 KB) | DOI: 10.15548/map.v3i2.3347

Abstract

Suatu himpunan  disebut ruang metrik dengan fungsi metrik  apabila memenuhi sifat tak negatif, simetris dan ketaksamaan segitiga. Jarak pada  adalah jarak terpendek dari dua buah titik yang dihubungkan dengan sebuah garis lurus. Beberapa karakteristik jarak pada  antara lain diameter suatu himpunan, jarak antara titik dan himpunan, dan jarak antara dua himpunan. Pada penelitian ini dipelajari karakteristik jarak pada ruang metrik  yang diterapkan pada lingkaran sebagai salah satu himpunan yang ada di .Kata Kunci: Ruang Metrik, Jarak, Lingkaran
LEFT INVERTIBLE SEMIGRUP PADA RUANG HILBERT Asfa’ani, Ezhari; Hasibuan, Lilis Harianti; Jannah, Miftahul; Putri, Darvi Mailisa
MAp (Mathematics and Applications) Journal Vol 2, No 1 (2020)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (655.093 KB) | DOI: 10.15548/map.v2i1.1640

Abstract

Analisis Fungsional merupakan salah satu cabang dari ilmu Matematika yang membahas tentang ruang vektor serta pemetaan di antara ruang - ruang tersebut. Pada artikel ini membahas tentang semigrup pada ruang Hilbert yang dapat dibalik dan mempunyai balikan. Untuk Semigrup yang sangat kontinu pada Ruang Hilbert, disini disajikan bukti singkat dari fakta-fakta bahwa inverse kiri dari semigrup yang dapat dibalik dan dapat dipilih menjadi semigrup juga. Lebih jauh pada tulisan ini akan ditunjukkan pula bahwa semigrup ini tidak perlu unik.AbstractFunctional Analysis is one branch of Mathematics that deals with vector spaces and mapping between these spaces This article to discuss about semigroups on Hilbert Space. For strongly continous semigroups on Hilbert space, we present a short proof of the fact that the left inverse of a left invertible semigroup can be chosen to be a semigroups as well. Furthermore, we show that this semigroups need not to be unique.Keywords: three-five word(s) or phrase(s), that it’s  representative for the article.
KONTROL ASYMPTOTIC TRACKING PADA SYSTEM NON LINEAR DENGAN MENGGUNAKAN NONHYPERBOLIC ZERO DINAMIC (PENDULUM TERBALIK) Hasibuan, Lilis Harianti; Sabran, La Ode
MAp (Mathematics and Applications) Journal Vol 1, No 2 (2019)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (512.19 KB) | DOI: 10.15548/map.v1i2.1183

Abstract

Tulisan  ini membahas tentang permasalahan control tracking pada system pendulum terbalik pada dua buah gerobak/kereta yang dikenal dengan system yang non linear. Adapun sifat-sifat dari system pendulum terbalik pada dua buah gerobak/kereta adalah nonlinear, nonminimum phase dengan system zero nonhyperbolic system.  Pada jurnal ini pertama sekali akan ditunjukkan bahwa nonhyperbolic zero dinamik tidak begitu perlu diaplikasikan pada teori  keluaran regulation.  Pada bidang lain, masalah asymptotic tracking pada dua gerobak/kereta dengan  menggunakan system pendulum terbalik  yang mana system pendulum terbalik ini mampu mengikuti pergerakan secara sinusoidal. Pergerakan tracking pada system pendulum terbalik yang mengikuti pergerakan sinusoidal inilah yang merupakan hasil dari keluaran teori regulation.  Sistem kontrol dibutuhkan untuk menstabilkan dan membuat batang pendulum pada posisi equilibriumnya yaitu pada sudut nol radian. Sistem pendulum kereta memiliki beberapa permasalahan kontrol diantaranya tracking. System ini terdiri dari sebuah kereta yang pergerakannya sepanjang track terbatas pada gerak linear dan gerak batang yang dipasang pada kereta. Antara kereta dan batang dihubungkan dengan sebuah engsel. Pendulum-kereta merupakan sistem yang tidak stabil dan nonlinear, sehingga untuk mengontrolnya diperlukan teknik kontrol yang tidak mudah dibandingkan dengan teknik kontrol pada sistem yang linear dan stabil.Abstract This paper discusses the problem of tracking control on the inverted pendulum system on two carts / trains known as non-linear systems. The properties of the inverted pendulum system on two carts are nonlinear, non-minimum phase with zero non-hyperbolic system. In this journal, we will first show that dynamic nonhyperbolic zero does not need to be applied to the output regulation theory. In other fields, the problem of asymptotic tracking on two carts / trains using an inverted pendulum system in which the inverted pendulum system is capable of following sinusoidal movements. The tracking movement in the inverted pendulum system that follows sinusoidal movement is the result of the regulation theory output. The control system is needed to stabilize and make the pendulum rod at its equilibrium position at zero angle radians. The train pendulum system has several control issues including tracking. This system consists of a train whose movement along the track is limited to linear motion and the motion of the rod mounted on the train. Between the carriage and the trunk is connected by a hinge. Pendulum-train is an unstable and nonlinear system, so to control it requires a control technique that is not easy compared to the control technique in a linear and stable system.
PEMODELAN DATA SAHAM MENGGUNAKAN ANALISIS TIME SERIES DENGAN PENDEKATAN COPULA GAUSSIAN Jannah, Miftahul; Mardika, Fitria; Hasibuan, Lilis Harianti; Putri, Darvi Mailisa
Math Educa Journal Vol 5, No 2 (2021)
Publisher : Universitas Islam Negeri Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15548/mej.v5i2.3124

Abstract

One method of predicting stock prices is to use the time series analysis method. In this method, a linear prediction model is made to see patterns from historical stock price data to assess future prices. The stock data used in this study is the daily stock data of PT. Telkom and PT. Indosat in 2020-2021. Autoregressive (AR) model is a time series model that is often used with the assumption that its volatility does not change with time (Homoscedastic). After analyzing the AR Model(1) data for the stock data of PT. Telkom and PT. Indosat has a non-independent error, therefore the AR(1)-N.GARCH(1,1) time series model construction was carried out to model the error (ϵ_(i,t)). Furthermore, the error of the AR(1)-N.GARCH(1,1) model is independent of t, so it can be modeled using Copula. After the Copula model was applied to the data and obtained the value of the fit of the Gaussian Copula distribution error model. From the values generated from the Gaussian Copula C({ϵ_(i,t) }_(t=1)^T ),T=1,2,…, and approximates a uniform distribution. So the stock data of PT. Telkom and PT. It can be said that Indosat is not suitable to be modeled with the Gaussian Copula.
Penerapan Metode Regresi Linear Sederhana Untuk Prediksi Harga Beras di Kota Padang Hasibuan, Lilis Harianti; Musthofa, Syarto
JOSTECH: Journal of Science and Technology Vol 2, No 1: Maret 2022
Publisher : UIN Imam Bonjol Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15548/jostech.v2i1.3802

Abstract

The purpose of this research is to get predictions of rice prices. Linear regression is used  as a method of predicting rice prices in the next X(t) period. In this study, the actual rice price Y(t) is the effect variable and the time period is the causal variable. The linear regression equation obtained is Y'=13562.561+9.041958X. Testing the accuracy of the prediction results was carried out using RMSE with a value of 0.126. The prediction of rice prices using the linear regression method can be said to be in the very good category, it can be seen that the RMSE value is very small in the test and meets the standard.
Co-Authors Asfa’ani, Ezhari Indah Permata Sari Mardika, Fitria Miftahul Jannah Musthofa, Syarto Putri, Darvi Mailisa Rianjaya, Ilham Dangu Sabran, La Ode