Article Per Year (5 Year)
p-Index From 2020 - 2025
0.61
P-Index
This Author published in this journals
All Journal BAREKENG: Jurnal Ilmu Matematika dan Terapan Invest Journal of Sharia & Economic Law
Lestari, Devi Indah
Unknown Affiliation
Religion Humanities Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Physics Social Sciences Transportation

Published : 3 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search

 1 
Problematika Implementasi Perjanjian Dalam Kerjasama dan Bagi Hasil Di Bengkel Las Semoyo Jaya: Sebuah Tinjauan Hukum Islam Santoso, Lukman; Lestari, Devi Indah
Invest Journal of Sharia & Economic Law Vol. 1 No. 1 (2021): INVEST - Vol. 1 No. 1 (2021)
Publisher : Institut Agama Islam Negeri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21154/invest.v1i1.2631

Abstract

A cooperation is an agreement between two or more people to do business and achieve common goals. Cooperation can be necessary for human life, considering that humans are social creatures who need each other. People in various circles have practiced cooperation in various fields. In various cooperation practices, there are often deviations from the agreement when initially making cooperation. This article explores the problems of implementing the cooperation agreement at the Semoyo Jaya welding workshop in a review of Islamic law. By using a qualitative approach and field research methods. Meanwhile, for data collection, using observation and interview techniques. This research concluded that the implementation of the cooperation agreement at the Semoyo Jaya welding workshop was not following the principles and elements of the agreement, namely, not fulfilling any of the rights and obligations contained in the contract. Meanwhile, the profit-sharing does not meet one of the syirkah inan requirements because one party is arbitrary in providing profits to the other party. This research can contribute practically to the parties that carry out cooperation to fulfill the agreement's terms based on Islamic legal values.
Problematika Implementasi Perjanjian Dalam Kerjasama dan Bagi Hasil Di Bengkel Las Semoyo Jaya: Sebuah Tinjauan Hukum Islam Santoso, Lukman; Lestari, Devi Indah
Invest Journal of Sharia & Economic Law Vol. 1 No. 1 (2021)
Publisher : Institut Agama Islam Negeri Ponorogo

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.94 KB) | DOI: 10.21154/invest.v1i1.2631

Abstract

A cooperation is an agreement between two or more people to do business and achieve common goals. Cooperation can be necessary for human life, considering that humans are social creatures who need each other. People in various circles have practiced cooperation in various fields. In various cooperation practices, there are often deviations from the agreement when initially making cooperation. This article explores the problems of implementing the cooperation agreement at the Semoyo Jaya welding workshop in a review of Islamic law. By using a qualitative approach and field research methods. Meanwhile, for data collection, using observation and interview techniques. This research concluded that the implementation of the cooperation agreement at the Semoyo Jaya welding workshop was not following the principles and elements of the agreement, namely, not fulfilling any of the rights and obligations contained in the contract. Meanwhile, the profit-sharing does not meet one of the syirkah inan requirements because one party is arbitrary in providing profits to the other party. This research can contribute practically to the parties that carry out cooperation to fulfill the agreement's terms based on Islamic legal values.
APPLIED MODIFIED EXPONENTIAL APPROACH METHOD TO DETERMINE THE OPTIMAL SOLUTION Pasaribu, Meliana; Helmi, Helmi; Pajriah, Dwi; Lestari, Devi Indah
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 19 No 1 (2025): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol19iss1pp87-96

Abstract

PT. IGM distributes vaccines to several cities within and outside West Kalimantan. Distribution can be carried out directly or through CV. XYZ. To maintain vaccine quality, an effective and efficient vaccine management plan is required, especially for storage and distribution, to prevent any deviations in these processes This is done to ensure the vaccine’s potency remains intact until it is ready for use. Distribution routes are chosen to be as efficient as possible. Therefore, this article discusses the application of the transportation method to manage vaccine distribution and minimize distribution costs. The distribution problem is formulated into a mathematical model and solved using the modified exponential approach method. This method is improvement on the improved Exponential Approach, focusing on the determination of initial solution and table revisions. Allocation is based on selecting cells with the smallest reduced cost entries. Based on research findings, PT IGM distributes vaccines to CV. XYZ, Pontianak and Kuburaya in amounts of 209.000 units, 151.000 units and 310.000 units, respectively. CV. XYZ distributes vaccines to Ketapang, Singkawang, Sintang and Bengkayang in amount of 40.000 units, 55.000 units, 45.000 units, and 9.000 units, respectively.
Co-Authors Helmi Helmi Lukman Santoso Meliana Pasaribu Pajriah, Dwi