Article Per Year (5 Year)
p-Index From 2021 - 2026
1.779
P-Index
This Author published in this journals
All Journal Jambura Journal of Mathematics International Journal of Research in Community Services International Journal of Quantitative Research and Modeling Pattimura Proceeding : Conference of Science and Technology International Journal of Ethno-Sciences and Education Research
Rizki Apriva Hidayana
Program Studi Magister Matematika, Fakultas MIPA, Universitas Padjadjaran, Indonesia
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Social Sciences Transportation Other

Published : 12 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 12 Documents
Search

 1   2 
Investment Portfolio Optimization With Mean-Variance Investment Portfolio Optimization Model Without Risk Free Assets Wilda Nur Rahmalia; Dwi Susanti; Rizki Apriva Hidayana
International Journal of Quantitative Research and Modeling Vol. 3 No. 4 (2022): International Journal of Quantitative Research and Modeling
Publisher : Research Collaboration Community (RCC)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijqrm.v3i4.360

Abstract

Forming a portfolio is a strategy that is often carried out by investors in risky investment conditions. Five non-risk free stocks were selected, namely PTBA, IPCM, ANTM, BUMI, and ADMF. The purpose of forming this portfolio is to determine the composition of the weight (proportion) of the allocation of funds in each of these shares in forming the optimum portfolio. The method used is the Mean-Variance investment portfolio optimization model without risk-free assets using the Markowitz approach. Based on the results obtained by the optimum portfolio of the Mean-Variance model without risk-free assets, the average return is 0.00105 and the variance is 0.000067 with a portfolio ratio value of 14.65256. The proportion of fund allocation to PTBA shares = 0.28872; IPCM=0.02484; ANTM=0.00016; EARTH=0.13501; and ADMF=0.55126. It is hoped that the formation of this portfolio optimization model will be useful as an alternative for investors in optimizing the investment portfolio to make it more profitable in the future. 
Mathematical Literacy in School Mathematics Learning: A Literature Review of Challenges and Instructional Strategies Rizki Apriva Hidayana; Siti Hadiaty Yuningsih; Nestia Lianingsih
International Journal of Ethno-Sciences and Education Research Vol. 6 No. 2 (2026): International Journal of Ethno-Sciences and Education Research (IJEER)
Publisher : Research Collaboration Community (Rescollacom)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46336/ijeer.v6i2.1280

Abstract

Mathematical literacy is one of the essential competencies that needs to be developed in school mathematics learning, as it plays an important role in equipping students to understand, interpret, and use mathematical concepts in various real-life situations. However, the development of mathematical literacy in learning practice still faces several challenges, such as the dominance of procedure-oriented instruction, the limited connection between mathematical content and everyday life contexts, and the lack of instructional strategies that promote students’ reasoning, problem-solving, and critical thinking. This article aims to examine the importance of mathematical literacy in school mathematics learning, identify the challenges encountered in its development, and describe various strategies that can be applied to support the improvement of students’ mathematical literacy. This article employs a literature review approach by examining various relevant scholarly sources related to mathematical literacy, mathematics learning, and instructional strategies. The results of the review indicate that the development of mathematical literacy can be supported through the implementation of contextual learning, problem-based learning, the use of non-routine problems, the strengthening of mathematical representation skills, and the integration of activities that encourage students’ mathematical reasoning and communication. Therefore, mathematical literacy needs to be positioned as a primary orientation in mathematics learning so that students are not only able to solve problems procedurally, but also able to use mathematics meaningfully in everyday life.
Co-Authors Ahmad Fawaid Ridwan Budi Nurani Ruchjana Dwi Susanti Emmanuel Parulian Sirait Jumadil Saputra Nestia Lianingsih Nurfadhlina Abdul Halim Siti Hadiaty Yuningsih Subiyanto Subiyanto Sudradjat Supian Syifa Nur Rasikhah Daulay Usman A. Yakubu Wilda Nur Rahmalia Yasir Salih