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All Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan International Journal of Business, Economics, and Social Development International Journal of Quantitative Research and Modeling International Journal of Ethno-Sciences and Education Research International Journal of Mathematics, Statistics, and Computing International Journal of Humanities, Law, and Politics International Journal of Health, Medicine, and Sports International Journal of Linguistics, Communication, and Broadcasting
Ibrahim, Riza Andrian
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Religion Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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The Role of Parents in Forming Children's Financial Literacy from an Early Age sidiq, fahmi; Ibrahim, Riza Andrian; Pirdaus, Dede Irman
International Journal of Ethno-Sciences and Education Research Vol 4, No 3 (2024)
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijeer.v4i3.709

Abstract

This research illustrates the importance of introducing the concept of income and expenditure at an early age by presenting simple, relevant examples. The introduction of income, such as a weekly allowance from parents, helps children understand the meaning of effort in earning money, develops financial decision-making skills, and builds discipline. Positive impacts include a better understanding of financial concepts and growing financial independence, despite potential wasteful habits and dependence on parents. On the other hand, the introduction of expenses, such as buying snacks or toys, helps children learn to choose between different options, understand the value of money, and be responsible for their spending. It also strengthens financial decision-making skills and awareness of financial priorities, although it can lead to wasteful habits and lack of awareness about saving for the future. In conclusion, early financial literacy education has a key role in shaping children's understanding of finance, financial values, and wise financial management practices, which will help them face future financial challenges and build a more stable financial foundation, while creating a strong foundation for healthy financial understanding within the family.
Determining the Pure Premium at Jasa Raharja Insurance Company Purwakarta Branch using Fast Fourir Transform (FFT) through Estimated Aggregate Loss Distribution Saefullah, Rifki; Ibrahim, Riza Andrian
International Journal of Quantitative Research and Modeling Vol 5, No 4 (2024)
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijqrm.v5i4.815

Abstract

Insurance is a contractual agreement between two parties, namely the insured party (customer) and the insurer (insurance company), in which the insured party pays a premium to the insurer, then in return, the insurer will provide compensation (claim) to the insured party if an insured event occurs. Each customer is required to pay a premium as an obligation stated in the insurance agreement by paying a premium, the customer fulfills his obligations and is entitled to the benefits stated in the policy. Therefore, the Insurance Company needs to carry out a scheme in the process of paying pure premiums for the sustainability of the insurance company. When determining the premium, it is done by estimating the aggregate loss distribution. This research will calculate thepure premium at the Purwakarta Branch of Jasa Raharja Insurance Company. The model used in this study is the distribution of aggregate loss with a compound distribution of claim frequency and claim size. Many claims follow the Poisson distribution and large claims follow the Lognormal distribution. In the process of estimating the probability of aggregate loss with the compound distribution model, the Inverse method with the Fast Fourier Transform (FFT) algorithm is used. This research will provide understanding and insight to insurance companies in determining the amount of premium that must be charged to customers.
Building an Understanding of Mathematics through Ethnic Mathematics: A Case Study of Learning in Bintuni Bay Regency Ibrahim, Riza Andrian; W, Alim Jaizul
International Journal of Ethno-Sciences and Education Research Vol 4, No 4 (2024)
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijeer.v4i4.782

Abstract

This study explores the application of ethnomathematics in mathematics education within the context of Bintuni Bay Regency. Ethnomathematics is the approach of linking mathematical concepts with local cultural practices, aiming to make learning more relevant and engaging for students. The research focuses on how this approach enhances students' understanding and motivation by integrating elements of local culture, such as traditional textile patterns, food-sharing customs, and handicrafts, into the mathematics curriculum. A qualitative case study method was used, involving classroom observations, interviews with teachers and students, and document analysis across three primary schools in Bintuni Bay. The findings indicate that students responded positively to the ethnomathematical approach, showing increased engagement and improved comprehension of mathematical concepts when taught in a culturally relevant context. Teachers also observed higher levels of participation, although they faced challenges related to limited resources and inadequate training. Despite these obstacles, ethnomathematics proved to be a valuable tool for deepening students' critical thinking and creativity, as well as fostering a connection between academic learning and their cultural heritage. The study concludes that ethnomathematics has significant potential to improve the quality of mathematics education, especially in culturally diverse regions like Indonesia. However, to optimize its implementation, further support is needed, including teacher training and the development of culturally appropriate teaching materials. This research contributes to a growing body of literature advocating for the integration of local culture into the educational process, offering recommendations for policymakers and educators to develop more responsive and inclusive curricula
Comparative Analysis of LSTM and GRU Models for Ethereum (ETH) Price Prediction Saputra, Moch Panji Agung; Ibrahim, Riza Andrian; Saputra, Renda Sandi
International Journal of Business, Economics, and Social Development Vol 6, No 1 (2025)
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijbesd.v6i1.887

Abstract

The increasing use of cryptocurrencies has changed the dynamics of investment, presenting both opportunities and challenges for investors. Although various studies have compared the performance of Long Short-Term Memory (LSTM) and Gated Recurrent Unit (GRU) in predicting financial asset prices, there are still differences in results regarding which model is superior. Therefore, this study aims to compare the performance of LSTM and GRU in predicting Ethereum prices using a hyperparameter tuning approach. The data used is historical data of Ethereum (ETH) shares from 2020 to 2025. The research methodology includes data preprocessing using Min-Max scaling, model development with various layer configurations, and comprehensive evaluation using several performance metrics. The results show that the GRU Model provides superior performance with a lower Root Mean Squared Error (RMSE) of 0.0234 and Mean Absolute Error (MAE) of 0.0168, compared to LSTM's RMSE of 0.0265 and MAE of 0.0193. While LSTM exhibits a slightly better Mean Absolute Percentage Error (MAPE) of 18.08% compared to GRU at 18.17%, the GRU model achieves a higher R² Score of 0.9442 compared to LSTM at 0.9282. Visual analysis of the prediction patterns and residual distributions further demonstrates GRU’s more consistent and accurate performance in capturing Ethereum price movements. These findings suggest that while both models are effective for cryptocurrency price prediction, GRU offers slightly better overall performance and stability, especially in maintaining consistent prediction accuracy across different market conditions.
Determining Long-Term Probabilities for Labor Absorption from the Realization of Domestic Investment (PMDN) and Foreign Investment (PMA) in Indonesia Using Markov Chain Analysis: Determining Long-Term Probabilities for Labor Absorption from the Realization of Domestic Investment (PMDN) and Foreign Investment (PMA) in Indonesia Using Markov Chain Analysis binti Syed Jaaffar, Sharifah Arni; Ibrahim, Riza Andrian
International Journal of Mathematics, Statistics, and Computing Vol. 1 No. 3 (2023): International Journal of Mathematics, Statistics, and Computing
Publisher : Communication In Research And Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijmsc.v1i3.6

Abstract

The government through President Joko Widodo in a press conference stated that the Job Creation Law is very urgent to be passed immediately, even though it has received a lot of resistance in society. The government stated that the bureaucracy in investing in Indonesia is still convoluted, so the possibility of a decrease in employment in the future is very high. However, this was denied by Faisal Basri. This reason is not in accordance with the current state of investment, he concluded. Realization of Domestic Investment (PMDN) and Foreign Investment (PMA) in Indonesia tends to always increase every year, so it is not the investment bureaucracy that is the cause of decreased employment. Abdul Malik said that, the reason for the decrease in absorption labor is the lack of competitiveness of the local workforce and the government's lack of selectiveness in choosing investments that enter Indonesia. This study aims to provide consideration for the government, in the form of long-term employment probabilities from the realization of PMDN and PMA in Indonesia which are calculated using Markov chain analysis. The calculation results obtained are that the long-term probability of increasing the amount of labor absorption from the realization of PMDN and PMA is 0.56 or 56%, while the long-term probability of decreasing is 0.44 or 44%. Then, in specific intervals, the possibility of an increase in the workforce of at most 93 thousand people is very high, namely 0.42 or 42%. This value is greater than the possibility of a decrease in the workforce of at most 93 thousand people, namely 0.27 or 27%. This value is contrary to the government's assumption which states that the possibility of a decrease in labor absorption is very high. Therefore, the results of this research can be used as one of the considerations for the government to rethink the urgency of issuing the Job Creation Law.
Optimization of White Box Testing by Utilizing Branching and Repeating Structures in Java Programs Using Base Path Kalfin, Kalfin; Ibrahim, Riza Andrian; Laksito, Grida Sakti
International Journal of Mathematics, Statistics, and Computing Vol. 2 No. 2 (2024): International Journal of Mathematics, Statistics, and Computing
Publisher : Communication In Research And Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijmsc.v2i2.98

Abstract

Software testing is a process created to detect anomalies in the operation of a program or system in order to achieve the expected results. White box testing is a software testing method that tests the internal structure, design and program code. This research aims to produce an optimization method for white box testing in Java programs by utilizing branching and repetition structures using the basis path method, as well as analyzing the effectiveness of the proposed method in generating test cases. The Java program tested in this research includes input function calls, loops, branching, and exception handling. Test case design is carried out by applying the basis path method to achieve comprehensive coverage. The test results show that the base path method is able to produce effective test cases for testing control structures without redundancy. Test case design is assisted by flowgraph and matrix graph modeling. It is hoped that this research can contribute to the optimization of white box testing techniques.
Basic Concepts of Stock Option Pricing Models Traded in the Capital Market Ibrahim, Riza Andrian; Azahra, Astrid Sulistya; Kalfin; Saputra, Moch Panji Agung
International Journal of Mathematics, Statistics, and Computing Vol. 2 No. 4 (2024): International Journal of Mathematics, Statistics, and Computing
Publisher : Communication In Research And Publications

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijmsc.v2i4.141

Abstract

An option, in the world of capital markets, is a right based on an agreement to buy or sell a commodity, financial securities, or a foreign currency at an agreed price at any time within a three-month contract period. Factors that determine the value of an option include the current price of the stock, intrinsic value, expiration time or time value, volatility, interest rate, and cash dividends paid. Some options pricing models use this parameter to determine the fair market value of an option. This paper aims to learn the basic concepts of option pricing. The method used in studying the pricing of options is a literature review, which is an activity to collect scientific data, especially in the form of theories, methods, or research that has been carried out previously, either in the form of books, manuscripts, journals, and others that already exist in the library. Based on the results of the study, concepts, scientific findings, and method innovations that have been achieved previously are obtained, which are very relevant and useful for understanding the determination of stock option prices. An option, in the world of capital markets, is a right based on an agreement to buy or sell a commodity, financial securities, or a foreign currency at an agreed price at any time within a three-month contract period. Factors that determine the value of an option include the current price of the stock, intrinsic value, expiration time or time value, volatility, interest rate, and cash dividends paid. Some options pricing models use this parameter to determine the fair market value of an option. This paper aims to learn the basic concepts of option pricing. The method used in studying the pricing of options is a literature review, which is an activity to collect scientific data, especially in the form of theories, methods, or research that has been carried out previously, either in the form of books, manuscripts, journals, and others that already exist in the library. Based on the results of the study, concepts, scientific findings, and method innovations that have been achieved previously are obtained, which are very relevant and useful for understanding the determination of stock option prices.
Analysis of Judges' Considerations in Cases of Murder Based on Infidelity Sidiq, Fahmi; Ibrahim, Riza Andrian; binti Abdullah Suhaimi, Nurnisaa
International Journal of Humanities, Law, and Politics Vol. 1 No. 3 (2023): International Journal of Humanities, Law, and Politics
Publisher : Communication in Research and Publications (CRP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijhlp.v1i3.32

Abstract

This study discusses the judge's consideration in deciding the criminal case of murder based on infidelity based on the judge's consideration of Article 338 of the Criminal Code Decision Number 88/Pid.B/2022/PN. The research uses normative juridical methods by examining primary and secondary legal materials. The results showed that the judge's consideration included both juridical and non-juridical aspects that influenced the final decision. The defendant is considered accountable for his actions, taking into account various factors such as the confession of guilt, the defendant's attitude in the trial, and previous legal experience. In addition, the defendant's actions and their impact on victims and society are also important factors in the judge's deliberations.
Bureaucratic Reform and Clean Governance: Efforts Towards Social Justice and Sustainable Economic Growth in Indonesia Ibrahim, Riza Andrian; Sidiq, Fahmi; Azahra, Astrid Sulistya
International Journal of Humanities, Law, and Politics Vol. 1 No. 3 (2023): International Journal of Humanities, Law, and Politics
Publisher : Communication in Research and Publications (CRP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijhlp.v1i3.33

Abstract

The implementation of a clean government free from corrupt behavior is a crucial aspect in ensuring sustainable economic growth and development in Indonesia. This article discusses the urgency of bureaucratic reform as a first step in overcoming various obstacles affecting the effectiveness of government. Institutional structuring, management, and human resources, as well as strengthening accountability are the main focuses of reform efforts. In addition, active community participation, firm law enforcement, transparency, and responsiveness to public needs are also important elements in good governance. Through the implementation of these principles, it is hoped that Indonesia can build a government system that is transparent, accountable, and able to provide quality services to all people.
Evolution of Cooperative Models: A Comparative Analysis of Traditional Cooperatives (TC) and New Generation Cooperatives (NGC) Ibrahim, Riza Andrian; Salih, Yasir; Sidiq, Fahmi
International Journal of Humanities, Law, and Politics Vol. 1 No. 4 (2023): International Journal of Humanities, Law, and Politics
Publisher : Communication in Research and Publications (CRP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijhlp.v1i4.67

Abstract

Cooperatives as membership-based economic entities have experienced an evolution from the traditional model (TC) to the new generation model (NGC). TC is known for its social orientation and simple structure, but often experiences limited capital and difficulty adapting to modern business dynamics. Responding to these weaknesses, NGC comes with a business model that is more open to external capital, professional management, and full supply chain penetration. Even though it provides significant added value, NGC is faced with challenges in maintaining the social values of cooperation and relationships between members. This article analyzes the comparison between TC and NGC, highlights the advantages and disadvantages of each model, and formulates the future development direction of cooperatives that integrates the positive elements of both models. The results of this research provide a basis for formulating recommendations for cooperative development in the future. It is recommended that cooperatives adopt a flexible business model, combining traditional and modern aspects. The importance of maintaining cooperative social values is in line with increasing efficiency and competitiveness. Efforts are needed to increase member literacy in terms of business management, and cooperatives need to build strategic partnerships with external parties to support growth and innovation. It is hoped that the implementation of these recommendations can lead cooperatives towards a sustainable future and provide maximum benefits for their members.
Co-Authors Azahra, Astrid Sulistya binti Abdullah Suhaimi, Nurnisaa binti Syed Jaaffar, Sharifah Arni Budi Nurani Ruchjana Hidayana, R Apriva Hidayana, Rizki Apriva Jaizul W, Alim kalfin Kalfin Laksito, Grida Sakti Lianingsih, Nestia Okta, Setyo Luthfi Pirdaus, Dede Irman Rini Cahyandari Saefullah, Rifki Salih, Yasir Saputra, Renda Sandi Sidiq, Fahmi Suhaimi, Nurnisaa binti Abdullah W, Alim Jaizul Yuningsih, Siti Hadiaty