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All Journal PERWIRA - Jurnal Pendidikan Kewirausahaan Indonesia Radiant : Journal of Applied, Social, and Education Studies
Nafi’a, Zidni Ilma
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Humanities Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Languange, Linguistic, Communication & Media Social Sciences Other

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Peramalan Harga Saham ADRO dengan Geometric Brownian Motion Nafi’a, Zidni Ilma; Nuraliya, Aliffia Yasya; Mukti, Gilang Axtria; Trenggono, Iqbal Ramadhanu
PERWIRA - Jurnal Pendidikan Kewirausahaan Indonesia Vol 7 No 2 (2024): PERWIRA - Jurnal Pendidikan Kewirausahaan Indonesia
Publisher : Perkumpulan Pendidik Kewirausahaan Indonesia (Perwira Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21632/perwira.7.2.108-116

Abstract

Stock prices often experience unpredictable changes, leading to the uncertainty of stock return values. This paper aims to find a mathematical model to predict future stock prices based on past stock price data. One of the models used to predict stock prices is the Brownian Motion Model, which is based on the concept of random movement. The research method used to solve the stock forecasting problem is by using Geometric Brownian Motion by calculating the return value of closing stock prices using Ms. Excel, testing the normality of return value data, modeling stock prices using Geometric Brownian Motion, and calculating the model’s accuracy level using MAPE. Based on the model, the accuracy level using MAPE from the calculation results is obtained with a MAPE value of less than 10%, which is 4,93%. Therefore, it can be concluded that the average error deviation generated indicates a high level of forecasting accuracy.
Evaluation of the Nutrition Installation Information System at RS Melati Tangerang Using the CIPP Model: Evaluasi Sistem Informasi Instalasi Gizi RS Melati Tangerang Menggunakan Model CIPP Nafi’a, Zidni Ilma; Amallia, Ade
RADIANT: Journal of Applied, Social, and Education Studies Vol. 6 No. 1 (2025): RADIANT: Journal of Applied, Social, and Education Studies
Publisher : Politeknik Harapan Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52187/rdt.v6i1.299

Abstract

The implementation of the nutrition installation information system at RS Melati Tangerang still encounters several obstacles. This research aims to evaluate the nutritional installation information system at RS Melati Tangerang using the CIPP model. This type of research is a qualitative method with a case study approach. Evaluation using the CIPP model (Context, Input, Process and Product). The 5 informants included the Head of the Nutrition Installation (1 person), the Nutritionist (1 person), the Cook (1 person), and the Waiter (2 people). Data collection techniques through interviews and observation. The data that has been collected is then analyzed through stages: data reduction, data presentation and drawing conclusions. The research results show that the problems with the nutrition installation information system at RS Melati Tangerang include: programmer limitations, not all features in the system can be used, there are parts between units that are not yet integrated in the system and do not facilitate the overall service and weak monitoring. The information system for the nutrition installation at RS Melati Tangerang received a positive response, however problems were found that had an impact on service integration. It is necessary to fulfill resource needs, build an integrated system and strengthen monitoring and evaluation.
Co-Authors Amallia, Ade Mukti, Gilang Axtria Nuraliya, Aliffia Yasya Trenggono, Iqbal Ramadhanu