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HENGKI TAMANDO SIHOTANG
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Jurnal Mantik
Published by Institute of Computer Science
ISSN : -     EISSN : 26854236     DOI : -
Core Subject : Economy, Science, Education,
Computer Science & IT Economics, Econometrics & Finance Languange, Linguistic, Communication & Media
Jurnal Mantik (Manajemen, Teknologi Informatika dan Komunikasi) is a scientific journal in information systems/informati containing the scientific literature on studies of pure and applied research in information systems/information technology,Comptuer Science and management science and public review of the development of theory, method and applied sciences related to the subject. Jurnal Mantik Penusa is published by Institute of Computer Science (IOCS). Editors invite researchers, practitioners, and students to write scientific developments in fields related to information systems/information technology,Comptuer Science and management science). Jurnal Mantik is issued 4 (FOUR) times a year.
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Articles 2,151 Documents
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Analysis of hotel visits in Ambon city using the naive bayes algorithm Doren, Henderina; Manuhutu, Jermias Victor; Makaruku, Yoakhina Nicole; Latuny, Wilma; Maimina, Apritiwi
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6936

Abstract

The rapid growth of tourism in Ambon City has increased competition among accommodations, necessitating data-driven performance evaluations. Prospective tourists often struggle with unstructured online reviews, while hotel management requires precise insights for improvement. This study aims to systematically classify hotel performance in Ambon City using the Naïve Bayes Algorithm based on reviews from platforms like Agoda and TripAdvisor. Adopting a descriptive quantitative methodology, the study processes and labels performance data as "Good," "Poor," or "Very Good." Findings demonstrate that the Naïve Bayes model is highly effective, achieving 91% accuracy. Evaluation via a Confusion Matrix confirms the model's reliability in predicting majority categories, proving that ratings and reviews are strong satisfaction predictors. While the model faces minor challenges with the "Poor" minority category due to limited data, the study provides strategic value. It offers management guidance for targeted improvements and helps tourists make informed decisions, ultimately enhancing the competitiveness of Ambon’s hospitality industry
Analysis of Consumer Value Perceptions on Purchasing Decisions for Environmentally Friendly Skincare Products Mubarok, Djihadul; Diniyah Jahro, Nashihatud
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6946

Abstract

The background of this research focuses on the influence of consumer value perception on purchasing decisions for environmentally friendly skincare products in Indonesia. Amid the growing environmental awareness, consumers are increasingly considering the ecological impact of the products they purchase. Therefore, it is crucial to understand how consumer perceptions of product value influence purchasing decisions. The purpose of this study is to analyze the impact of consumer value perception, which includes functional value, emotional value, price value, and social value, on purchasing decisions for environmentally friendly skincare products in Indonesia. The research employs a quantitative approach, with data collected through a questionnaire distributed to 150 respondents. The data were analyzed using multiple linear regression with SPSS software, along with validity, reliability, and classical assumption tests. The results indicate that functional value, emotional value, and price value significantly influence purchasing decisions, while social value does not have a significant effect. The coefficient of determination (R²) is 0.539, meaning that 53.9% of the variation in purchasing decisions can be explained by these four variables. In conclusion, marketing strategies for environmentally friendly skincare products in Indonesia should emphasize tangible benefits, emotional experiences, and competitive pricing, while social value does not play a significant role in purchasing decisions
Uncertainty and stability analysis of data-driven inversion using support vector regression Pratama, I Wayan Pio
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6957

Abstract

This study examines learning-based inversion through the lens of inverse problem theory, focusing on uncertainty propagation, conditioning, and identifiability rather than pointwise prediction accuracy alone. Inverse estimation is formulated as a stochastic mapping in which observational noise is explicitly propagated through learned inverse models. A controlled one-dimensional nonlinear inverse problem is constructed using synthetic forward operators to systematically isolate noise-induced instability and non-uniqueness effects. For an injective nonlinear forward mapping, Support Vector Regression (SVR) with a radial basis function kernel and linear regression are trained to approximate the inverse operator from noisy observations. Monte Carlo noise propagation is employed to estimate bias and variance of inverse predictions and to compare empirical uncertainty amplification with theoretical predictions derived from local inverse conditioning. While SVR significantly outperforms linear regression in terms of inverse accuracy, the results demonstrate that inverse uncertainty is primarily governed by the conditioning of the forward operator and is modulated by model regularization. The analysis is extended to a non-injective forward operator to investigate identifiability loss in learning-based inversion. In this setting, both models collapse inherently multi-valued inverse mappings into unimodal and overconfident estimates, revealing implicit solution selection driven by data distribution and regularization. These findings show that low prediction error can be misleading in non-identifiable inverse problems. Overall, this work highlights the limitations of deterministic learning-based inversion and underscores the need for uncertainty-aware and distribution-preserving approaches when addressing ill-conditioned or non-injective inverse problems.
The blockchain-based sharia accounting system: strengthening compliance of islamic rural banks in Indonesia Suyatna, Nano
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6966

Abstract

This research discusses the implementation of blockchain technology in Sharia accounting systems to strengthen compliance with Sharia principles, enhance transparency, and strengthen the resilience of institutions at Islamic Rural Banks (BPRS) in Indonesia. The increasing cases of bankruptcy in BPRS due to weak governance and fraudulent practices highlight the need for secure, transparent, and accountable financial infrastructure. Blockchain, with its characteristics of immutability and cryptographic verification, provides a mechanism for recording financial transactions permanently, transparently, and in compliance with Sharia principles, free from elements of riba, gharar, and maysir. This study uses a Hybrid Spiral-Agile approach integrated with the V-Validation model and the Sharia Compliance Loop to develop a blockchain-based accounting system that automates Sharia contracts such as Murabahah, Ijarah, and Mudharabah through smart contracts, enhancing auditability and maintaining data integrity. The research findings indicate that the application of blockchain can speed up the audit process, reduce human errors, and minimize the potential for fraud. Thus, blockchain functions not only as a financial technology innovation but also as a digital trust infrastructure that strengthens ethical governance, transparency, and sustainability in the Sharia finance ecosystem in Indonesia
Job insecurity and job experience on salesperson performance mediated by work engagement Jayanti, Hani; Azizah, Siti Nur
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6972

Abstract

Sales performance differs notably among individuals, yet each salesperson plays a crucial role in achieving organizational targets. These differences can be influenced by various factors, including job insecurity and job experience. This study investigates how job insecurity and job experience affect job performance, with work engagement as a mediating factor, focusing on car salespersons in Kebumen Regency. Using a quantitative approach and Partial Least Squares–Structural Equation Modeling (PLS-SEM), data were collected from 62 respondents. The results reveal that job insecurity has no significant impact on work engagement or job performance. In contrast, job experience positively and significantly affects both work engagement and performance. Mediation analysis shows that work engagement significantly mediates the effect of job experience on performance, but not for job insecurity. These findings highlight that while work engagement can amplify the benefits of job experience, it does not counteract the negative effects of job insecurity. Managers are thus advised to enhance work engagement and
The effect of servant leadership and non-physical work environment on employee performance with motivation as mediation at the nusakambangan open correctional institution Wahyono, Peri; Azizah, Siti Nur
Jurnal Mantik Vol. 9 No. 4 (2026): February: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The aim of this research is to examine the influence of the non-physical work environment and servant leadership on employee performance in the Nusakambangan open prison, with motivation as a mediating variable. Servant leadership emphasizes a leadership style that prioritizes service to subordinates, while the non-physical work environment includes psychological and social aspects that can affect employee comfort and productivity. This descriptive study used a quantitative approach. This study involved 68 people working at the Nusakambangan Open Prison. Sampling saturation was used to cover the entire population, consisting of 68 employees. In this study, interviews, observations, and questionnaires were used to collect data. Structural Equation Modeling (SEM) or Partial Least Squares (PLS) was used to conduct data analysis. The research findings indicate that servant leadership has an impact on motivation, as does the non-physical work environment; both affect performance through motivational mediation. The results suggest that a leadership style that prioritizes service and a psychologically supportive work environment can increase employee motivation, which in turn can lead to better performance.
Financial feasibility evaluation of BSF maggot cultivation at Bumi Farm, Cipaku Village, Bogor City Riswanti, Dwi Meyliani; Gumilang, Adi Surya Panji
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.6997

Abstract

The problem of food waste management, which continues to increase and dominate the composition of waste, necessitates circular economy-based solutions that not only solve the problem of waste accumulation but also provide economic benefits. One such solution is the cultivation of Black Soldier Fly (BSF) maggots, as maggots can reduce food waste by 90%. One of the businesses that cultivates BSF maggots is Bumi Farm, but since its establishment in 2020, no financial feasibility evaluation has been conducted. Therefore, this study aims to evaluate the financial feasibility of BSF maggot cultivation at Bumi Farm using NPV, IRR, PP, and Net B/C. The results of this study indicate that the BSF maggot cultivation business at Bumi Farm shows the following values NPV with a Bi Rate of 5.75% is IDR 152,700,000, which is considered feasible because the NPV value is > 0; IRR value of 36.71% is considered feasible because the IRR value is > Bi Rate; The Payback Period of 2 years and 10 months is feasible because the PP value is < Economic Life, and the Net B/C of 2.32 is feasible because the Net B/C value is > 1. The results of the analysis show that all financial feasibility indicators are met, so that the BSF Maggot Cultivation business at Bumi Farm is feasible to run because it meets all financial feasibility indicators
Organizational performance of the KONI Kota Kupang based on leadership style, retention, and work–life balance Saubaki, Moniche Aletha; Marnisah, Luis
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.7004

Abstract

This study aims to analyze and examine the partial and simultaneous effects of leadership style, retention, and work–life balance on organizational performance at KONI Kupang City. The research employs a quantitative method with a survey, confirmatory, and verificative approach. This study is classified as associative research focusing on the relationships among variables. The research population consists of 93 administrators, all of whom were included as the research sample using a saturated sampling technique. The data comprise primary and secondary data, collected through observation, questionnaire-based interviews, and documentation. Data analysis was conducted using multiple linear regression with SPSS version 30. The results indicate that leadership style, retention, and work–life balance have a significant positive effect on improving organizational performance, both partially and simultaneously. These three variables demonstrate a substantial (strong) relationship, accounting for 72.8% of the improvement in organizational performance. This research contributes to developing comprehensive human resource management science and further research in this field. Improving organizational performance can be done by simultaneously paying attention to aspects of leadership style, retention, and work-life balance
Competence, workload, and motivation as predictors of employee performance : Case Study in DPRD Muara Enim Regency Harmison, Harmison; Alie, Marzuki
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.7005

Abstract

This study aims to analyze and examine the partial and simultaneous effects of competence, workload, and motivation on the performance of employees at the Secretariat of the Regional House of Representatives (DPRD) of Muara Enim Regency. The research employs a quantitative method with a survey, confirmatory, and verificative approach. This study is classified as associative research focusing on the relationships among variables. The research population consists of 90 employees, all of whom were included as the research sample using a saturated sampling technique. The data comprise primary and secondary data, collected through observation, questionnaire-based interviews, and documentation. Data analysis was conducted using multiple linear regression using SPSS version 30. The results indicate that competence and motivation have a significant positive effect on employee performance, while workload has a significant negative effect on employee performance. Simultaneously, employee performance is positively and significantly influenced by the combination of competence, workload, and motivation. These three variables demonstrate a substantial relationship in improving employee performance. This research contributes to developing comprehensive human resource management science and further research in this field. Improving employee performance can be done by simultaneously paying attention to aspects of competence, workload, and motivation
Carring behavior, discipline, and competence as predictors of service quality in the RSU Ogan Ilir Jauhari, Jauhari; Yustini, Tien
Jurnal Mantik Vol. 9 No. 4 (2026): February: 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.v9i4.7008

Abstract

This study aims to analyze and empirically verify the influence of caring behavior, discipline, and competence on the service quality of employees at the Ogan Ilir Regional General Hospital, both partially and simultaneously. The research employed a quantitative method with survey, confirmatory, and verificative approaches. This study is categorized as associative research, focusing on the relationships among variables. The research population consisted of 118 employees, all of whom were included as research samples using a saturated sampling technique. The types of data comprised primary and secondary data, collected through observation, questionnaire-based interviews, and documentation. The data analysis technique used was multiple linear regression with SPSS version 30. The findings indicate that caring behavior, discipline, and competence have a positive and significant effect on improving service quality, both partially and simultaneously. These three variables demonstrate a substantial (strong) relationship of 81.6% with the improvement of service quality. This research contributes to developing comprehensive human resource management science and further research in this field. Improving service quality can be done by simultaneously paying attention to aspects of caring behavior, discipline, and competence

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