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Greenation International Journal of Economics and Accounting

GIJEA
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Published by Greenation Research

ISSN : 29865336 EISSN : 29865050 DOI : https://doi.org/10.38035/gijea

Core Subject : Economy,

Economics, Econometrics & Finance

Greenation International Journal of Economics and Accounting (GIJEA) is managed and published by Greenation Research & Yayasan Global Research National, periodically four times a year every March, June, September, and December. GIJEA is a peer-reviewed journal that publishes scientific articles in the fields of Economics and Accounting. Articles published on GIJEA include the results of original scientific research (top priority), new scientific review articles (not priority), as well as results of studies in the fields of Economics and Accounting.

Arjuna Subject : Bisnis, Menejemen, dan Akutansi (semua kategori) - Bisnis, Menejemen, dan Akutansi (Lain-Lain)

Articles 273 Documents

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Comparative Analysis of Optimal Stock Portfolio Results using The Markowitz Method and a Single Index (Study on LQ 45 Company Shares Listed on the Indonesia Stock Exchange Period January – December 2024) Matdio Siahaan; Jhonni Sinaga; David Pangaribuan
Greenation International Journal of Economics and Accounting Vol. 4 No. 2 (2026): Greenation International Journal of Economics and Accounting (May - June 2026)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijea.v4i2.902

In the era of digital technology advancement, Indonesia has become an alternative investment destination in the capital market, attracting global attention. Investing in the capital market offers high returns and significant risks. Therefore, investors need strategic skills to mitigate risk. Risk reduction can be achieved through asset diversification, also known as portfolio formation. This study aims to develop an optimal portfolio using the Markowitz Single Index method and to determine the optimal investment proportion for the LQ45 Index. The sample used was the LQ45 index members from January 2024 to December 2024. This method is a comparative study with daily data, using calculations of realized return, variance, covariance, and cut-off rate for a single index. The analysis using the Markowitz method resulted in seven stocks as optimal portfolio recommendations, the stock composition is different between the two methods with a return of 0.15% and a risk of 1.25%. The analysis using the Single Index method resulted in seven stocks as optimal portfolio recommendations, with a return of 0.037% and a risk of 0.07%.

Human Resource Capacity of The Indonesian National Police in Law Enforcement: A Case Study at The Criminal Investigation Unit of Polrestabes Semarang Darwin Tamba; Arthur Josias Simon Runturambi; David Ronald Tairas
Greenation International Journal of Economics and Accounting Vol. 4 No. 2 (2026): Greenation International Journal of Economics and Accounting (May - June 2026)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijea.v4i2.940

This study examines the human resource (HR) capacity of the Criminal Investigation Unit (Satreskrim) of Polrestabes Semarang in law enforcement, encompassing four analytical dimensions: technical competence, integrity, professionalism, and adaptability. Using an empirical juridical qualitative approach with semi structured interviews conducted with four active Satreskrim personnel, the findings reveal an asymmetric capacity condition. HR capacity is relatively adequate for handling conventional crimes but faces serious gaps in dealing with contemporary criminal challenges, particularly digital based crimes. The study identifies structural factors contributing to integrity vulnerabilities, including budget shortfalls, supervisory weaknesses, and workload imbalances, that frame ethics violations not merely as individual failures but as systemic issues. Professionalism is demonstrated through procedural adherence, though constrained by excessive caseloads and training that does not fully address field realities. Adaptability is the most critically deficient dimension, with informal learning mechanisms insufficient to address rapidly evolving crime patterns. This study proposes a three layer HR capacity improvement strategy: reformed competency based recruitment, customized structured training (prioritizing digital forensics), and a strengthened integrity and accountability system including whistleblowing mechanisms and investigator welfare improvements.

The Influence of Perceived Value on Repurchase Intention with the Mediation of Trust and Brand Image in the Whoosh Transportation Mode Ahmad Zaki Pratama; Kusuma Ratnawati; Sri Palupi Prabandari
Greenation International Journal of Economics and Accounting Vol. 4 No. 2 (2026): Greenation International Journal of Economics and Accounting (May - June 2026)
Publisher : Greenation Research & Yayasan Global Resarch National

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38035/gijea.v4i2.966

This study aims to analyze the influence of perceived value on repurchase intention toward the Whoosh transportation service, with trust and brand image acting as mediating variables. The research is motivated by fluctuations in the number of Whoosh passengers, indicating that the initial public interest has not fully transformed into sustainable repurchase intention. This study applies a quantitative approach with an explanatory research design. Data were collected from 261 respondents consisting of active users, former users, and potential users of Whoosh services in the Jakarta–Bandung area. The sampling technique employed was purposive sampling, while data analysis was conducted using Partial Least Squares Structural Equation Modeling (PLS-SEM). The results indicate that perceived value has a positive and significant effect on repurchase intention, trust, and brand image. In addition, trust and brand image also positively influence repurchase intention. The mediation analysis further demonstrates that trust and brand image significantly mediate the relationship between perceived value and repurchase intention. These findings suggest that enhancing customer-perceived value through service quality, operational reliability, and strengthening the modern image of Whoosh can increase public trust and encourage sustainable repurchase intention toward the service.

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M. Rizky Mahaputra

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Abstract

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name M. Rizky Mahaputra

Contact Email greenation.info@gmail.com

Phone +6281210467572

Journal Mail Official greenation.info@gmail.com

Editorial Address Jl. Kapt. A. Hasan, Telanaipura Jambi-Indonesia

Location Kota jambi, Jambi INDONESIA

Abstract

Abstract

Abstract

Contact Name
M. Rizky Mahaputra

Contact Email
greenation.info@gmail.com

Phone
+6281210467572

Journal Mail Official
greenation.info@gmail.com

Editorial Address
Jl. Kapt. A. Hasan, Telanaipura Jambi-Indonesia

Location
Kota jambi,

Jambi

INDONESIA