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All Journal Jurnal Mantik Management Studies and Entrepreneurship Journal (MSEJ) Jurnal Indonesia Sosial Sains
Charles Charles
Universitas Prima Indonesia
Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Energy Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Neuroscience Physics Social Sciences

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Customer Churn’s Analysis In Telecomunications Company Using Fp-Growth Algorithm: Customer Churn’s Analysis In Telecomunications Company Using Fp-Growth Algorithm Kelvin Kelvin; Cindy Cindy; Charles Charles; Denny Peter Leonardo; Yennimar Yennimar
Jurnal Mantik Vol. 4 No. 2 (2020): Augustus: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.Vol4.2020.933.pp1285-1290

Abstract

Nowadays the competition between companies is increasing. Companies need to predict their customers to find out the level of customer loyalty. One way is to analyze customer data by doing Customer Churn Prediction. In this study the method used is the FP-Growth Algorithm. The FP-Growth algorithm is an algorithm that uses the association rules technique to determine the data that appears most frequently. The data used in this study are secondary data and have 7,403 data from customers. The data has 21 variables. By using a minimum support of 1.2% and confidence at 80%, the associative rules generated are 60. The variable of the type of internet the customer has is strong enough to predict churn. It can be seen that of the 60 associative rules, there are 36 associative rules that have this variable. Testing associative rules on test data yields an accuracy of 71%.
The Effect Of Firm Size, Profitability, And Debt Policy On Firm Value In Transportation Companies Listed On The Indonesia Stock Exchange (IDX) For The 2020-2022 Period Clarita Angel; Charles Charles; Arie Pratania Putri; Rohima Br Purba
Management Studies and Entrepreneurship Journal (MSEJ) Vol. 6 No. 2 (2025): Management Studies and Entrepreneurship Journal (MSEJ)
Publisher : Yayasan Pendidikan Riset dan Pengembangan Intelektual (YRPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37385/msej.v6i2.7325

Abstract

The government has established and expanded transportation companies to improve public efficiency. Various actions have been taken by the government to support the growth of the transportation sector due to the high demand from society. Large companies have the potential to achieve more cost-effective offers in vehicle transactions or large-scale fuel purchases. High profitability opens opportunities for companies to become more stable and competitive in a highly competitive market environment. Transportation companies also require funds to improve infrastructure and develop technology through debt. This study aims to examine the impact of firm size, profitability, and debt policy on the value of companies listed on the Indonesia Stock Exchange (IDX) during 2020-2022. Firm size is measured by total assets, profitability by return on assets (ROA), and debt policy by the debt to equity ratio (DER) and debt to assets ratio (DAR). The firm value is analyzed using the price to book value (PBV), which reflects market perception of the company's prospects and performance. The data used in this study is secondary data obtained from financial reports of companies listed on the IDX during 2020-2022. The sample consists of 11 companies that meet the inclusion criteria. The analysis technique used is multiple linear regression to test the effect of independent variables (firm size, profitability, and debt policy) on the dependent variable (firm value). The results of the study show that the independent variables do not have a significant effect on firm value. According to theory, this study suggests that these internal factors do not have enough influence in shaping market perceptions of company value in the Indonesian capital market.
Motivation and Challenges in Learning Mandarin For Non-Chinese Descent High School Students at Methodist-6 School Medan Shandy Shandy; Charles Charles; Elly Romy
Jurnal Indonesia Sosial Sains Vol. 6 No. 6 (2025): Jurnal Indonesia Sosial Sains
Publisher : CV. Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jiss.v6i6.1762

Abstract

This study aims to analyze the level of motivation and the difficulties faced by non-Chinese students in learning Mandarin at SMA Methodist-6 Medan. The background of this research is the increasing demand for Mandarin proficiency in Indonesia, following the growing bilateral relations between Indonesia and China and the increasing career opportunities requiring Mandarin skills. This study uses a quantitative approach with a survey method, where data is collected through questionnaires distributed to non-Chinese students. The results show that most students have high motivation to learn Mandarin, particularly instrumental motivation related to career opportunities. However, the main difficulties they face lie in writing and speaking skills, which are caused by the structural differences between Mandarin and Indonesian, as well as limited opportunities to practice outside the school environment. Additionally, there is an indication of a gap between students' high motivation and their actual ability to overcome linguistic barriers. The Pearson correlation test results show a weak and insignificant positive relationship between motivation and learning difficulties. Based on these findings, it is suggested that a more contextual and communicative learning approach should be applied to address the learning difficulties faced by students and improve their Mandarin language skills.
Co-Authors Arie Pratania Putri Cindy Cindy Clarita Angel Denny Peter Leonardo Elly Romy kelvin kelvin Rohima Br Purba Shandy Shandy Yennimar Yennimar