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All Journal Al-Jabar : Jurnal Pendidikan Matematika Journal of Administrative and Sosial Science (JASS) Journal Governance and Politics (JGP)
Muhammad Arjuna
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Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Environmental Science Mathematics Social Sciences Other

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Peranan Leadership Terhadap Disiplin Kerja Karyawan pada PT. Arta Samudra Isgar Muhammad Ricky Tumoka; Muhammad Arjuna
JOURNAL OF ADMINISTRATIVE AND SOCIAL SCIENCE Vol. 6 No. 1 (2025): Journal of Administrative and Social Science
Publisher : Sekolah Tinggi Ilmu Administrasi (STIA) Yappi Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jass.v6i1.1837

Abstract

The role of leadership is something that is very related to employee work discipline. Meanwhile, work discipline is a benchmark in assessing employee performance in a company. However, at PT. Arta Samudra still has some employees who lack discipline in carrying out their job responsibilities. Among them are coming on time, often abusing the facilities provided. With a qualitative method, this study is aimed at determining the role of leadership in employee work discipline at PT. Arta Samudra, what are the obstacles faced by the leadership to employee performance at PT. Ocean Art. The results obtained are that the role of leadership in employee work discipline is good, but there are still some employees who lack discipline, with the obstacles faced by the leadership, namely the lack of reliable Human Resources and also the special treatment given to employees, and also trying to speak up to all employees about what is expected as their efforts.
Solusi Kepemimpinan terhadap Kinerja Karyawan PT. Arta Samudra Isgar Muhammad Ricky Tumoka; Muhammad Arjuna
Journal Governance and Politics (JGP) Vol 5 No 1 (2025): Journal Governance and Politics (JGP)
Publisher : IISIP YAPIS Biak

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Abstract

Tujuan dari pemimpin adalah mencapai tujuan organisasi, sedangkan tujuan dari bawahan adalah untuk mencapai harapan kebutuhan hidup. Salah satu faktor utama yang memengaruhi kinerja karyawan adalah gaya dan kualitas kepemimpinan yang diterapkan oleh manajemen. Pemimpin yang efektif mampu memotivasi, membimbing, dan memberdayakan bawahannya untuk mencapai kinerja terbaik. Metode penelitian yang digunakan dalam penelitian ini adalah metode kualitatif yang bertujuan untuk mengetahui solusi kepemimpinan terhadap kinerja karyawan pada PT. Arta Samudra. Berdasarkan hasil penelitian diperoleh informasi bahwa solusi dalam mengatasi kendala yang dihadapi pimpinan terhadap kinerja karyawan pada PT. Arta Samudra adalah dengan berani speak up terhadap apa yang sebenarnya terjadi.
Exploring learning trajectories in trigonometric identity proof construction through didactic transposition Ade Mirza; Winarji, Agus; Metia Novianti; Ferah Ningtias; Muhammad Arjuna
Al-Jabar: Jurnal Pendidikan Matematika Vol 17 No 1 (2026): Al-Jabar : Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v17i1.30223

Abstract

Purpose: This study aims to analyze students’ learning trajectories in constructing proofs of trigonometric identities through the lens of didactic transposition. Method: This research employed a descriptive qualitative design involving undergraduate students enrolled in a mathematics education program who were taking a trigonometry course. Participants were selected purposively based on their active engagement in proof-related learning activities. Data were collected through classroom observations, analysis of students’ written proof documents, and in-depth interviews to capture students’ reasoning processes and conceptual interpretations. The collected data were analyzed through qualitative procedures consisting of data reduction, data display, and conclusion drawing to identify patterns in students’ learning trajectories during the proof construction process. Findings: The findings indicate that students’ learning trajectories in constructing trigonometric identity proofs develop through three interconnected phases. The first phase involves exploring the meaning of trigonometric ratios within geometric contexts. The second phase focuses on formalizing the relationships among trigonometric ratios and identities. The third phase involves constructing deductive arguments to establish the fundamental identity , reflecting a shift from empirical reasoning to formal mathematical proof. Significance: The didactic transposition process plays a crucial role in transforming students’ understanding from procedural manipulation toward deeper conceptual meaning. This process facilitates the emergence of structured learning trajectories that support reflective reasoning and higher-order mathematical thinking. The findings suggest that trigonometry instruction should emphasize conceptual learning trajectories grounded in didactic transposition to strengthen students’ proof construction abilities and promote meaningful mathematical understanding.
Co-Authors Ade Mirza Ferah Ningtias Metia Novianti Muhammad Ricky Tumoka, Isgar Winarji, Agus