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INDONESIA
Science and Physics Education Journal (SPEJ)
Published by Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi
ISSN : 26140195     EISSN : 25982567     DOI : -
Core Subject : Education,
Education
Arjuna Subject : -
Articles 84 Documents
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Upaya Mengurangi Cacat Produk Tembaga pada Proses Produksi Pt. XYZ dengan Pendekatan Metode Six Sigma dan Analisa 5W+1H Haris Setyawan, Eka; Rizqi, Akhmad Wasiur
Science and Physics Education Journal (SPEJ) Vol. 9 No. 1 (2025): Science and Physics Education Journal (SPEJ)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/tfbr2c51

Abstract

Abstract: This study aims to minimize product defects in the copper production process at PT. XYZ. The Six Sigma method was used with the 5W+1H analysis approach. The data analysis results show that from the Refinery Plant production during May–June 2025, with a total of 1,249,320 units, 1,903 units were defective, or 15%. The main types of defects include Nodular Copper (31%), Thin Cathodes (22%), Moldy Cathodes (11%), Bent Cathodes (10%), and Broken Edge Strips (6%). In conclusion, through the DMAIC process, the causes of defects were analyzed using Pareto diagrams, fishbone diagrams, and RCA. The results showed that human, machine, material, method, and environmental factors contributed to product defects. Recommendations for improvement include operator training, routine machine maintenance, material control, and improving work environment conditions. The implementation of this method is expected to reduce the defect rate, improve product quality, and support the company's competitiveness.   Keywords: DMAIC, Quality, Defective Products, Six Sigma, 5W+1H
Tinjauan Komprehensif Tentang Manajemen Termal dan Pembuangan Panas pada Rem Cakram Otomotif: Kemajuan Dalam Bahan, Desain, dan Teknik Pemodelan Widjaja Sikumbang, Rama; Pranoto, Hadi
Science and Physics Education Journal (SPEJ) Vol. 9 No. 1 (2025): Science and Physics Education Journal (SPEJ)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/k4g9hj91

Abstract

Abstract: The braking system is a critical component in vehicles, ensuring effective and safe deceleration. Disc brakes, commonly used in automotive applications, generate significant heat during operation, which if not managed properly, can lead to serious problems such as brake fading and component failure. This study reviews various methodologies and findings from previous research on thermal management in disc brakes using Finite Element Analysis (FEA) and other experimental methods. Key findings include the effectiveness of improved ventilation designs, the impact of cooling fins, and the role of composite materials in enhancing heat dissipation. The study also examines the influence of geometric design variations and operating conditions on thermal performance. The results highlight that advanced materials like ceramics, cross-ventilated rotors, and active cooling fins significantly improve thermal efficiency and reduce overheating risks. Furthermore, mathematical modeling techniques such as Response Surface Methodology (RSM) and Distance Weighted Least Squares (DWLS) fitting models provide valuable insights for optimizing disc brake systems. The review underscores the importance of comprehensive thermal management strategies to ensure the safety and reliability of braking systems under various operational conditions. Future research should focus on addressing the limitations of current FEA models and developing more efficient materials and rotor designs.   Keywords: Braking System, Thermal Management, Finite Element Analysis
Studi Tentang Penerapan Golden Handcuffs: Pinjaman Karyawan dari Perusahaan Sebagai Cara untuk Meminimalkan Turnover Ulum, Bahrul
Science and Physics Education Journal (SPEJ) Vol. 9 No. 1 (2025): Science and Physics Education Journal (SPEJ)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/02k2p980

Abstract

Abstract: High employee Turnover rates pose a serious challenge in human resource management, particularly in the competitive banking sector, such as Bank XYZ. One strategy used to retain employees is the implementation of a golden handcuff policy, which provides long-term financial incentives such as low-interest loans. This study aims to determine the effectiveness of this policy in minimizing employee Turnover by considering three key dimensions: financial, social, and business processes. The method used in this study is the Analytical Hierarchy Process (AHP), which enables systematic decision-making through weighting criteria and sub-criteria. A hierarchical structure was developed with the primary goal of minimizing Turnover, with three main criteria (financial, social, and business processes), nine sub-criteria, and two policy alternatives: maintaining or eliminating the golden handcuff policy. Data were obtained through paired questionnaires administered to HR experts and managers at Bank XYZ. The results of this study are expected to identify the dominant factors influencing employee retention decisions and provide data-driven strategic recommendations to management in designing effective and sustainable retention policies.   Keywords: Decision Making, Employee Turnover, Golden Handcuff, Low Interest Loans, Retention Strategy
Analisis Kebutuhan Penerapan Model Teams Games Tournament dalam Pembelajaran Fisika Berdasarkan Hasil Observasi Guru dan Siswa Hasryani, Novia; Ariani, Tri; Gumay, Ovilia Utami Putri
Science and Physics Education Journal (SPEJ) Vol. 9 No. 1 (2025): Science and Physics Education Journal (SPEJ)
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/tfj5vd37

Abstract

Abstrak: Pembelajaran IPA di sekolah menengah masih di dominasi oleh metode pembelajaran tradisional, seperti ceramah dan pemberian tugas. Hal ini membuat siswa menjadi pasif dan kurang terlibat dalam pembelajaran,yang  menyebabkan rendahnya motivasi untuk belajar, sedikitnya partisipasi siswa dalam diskusi, dan pembelajaran yang terasa sulit dan tidak relevan dengan kehidupan sehari-hari. Selain itu, keterbatasan bahan ajar membuat pembelajaran kurang efektif dan kurang mendukung penerapan model pembelajaran Teams Games Tournament. Penelitian ini bertujuan untuk menganalisis kebutuhan guru dan siswa dalam mengunakan model Teams Games Tournament pada pembelajaran IPA di kelas VII SMPN Muara Lakitan. Penelitian ini menggunakan metode deskriptif kualitatif dengan subjek penelitian guru mata pelajaran IPA dan tiga peserta didik yang terdiri atas siswa berkemampuan tinggi, siswa berkemampuan sedang, dan siswa berkemampuan rendah. Data dikumpulkan melalui wawancara mendalam dan observasi selama proses pembelajaran berlangsung. Hasil penelitian menunjukkan bahwa proses pembelajaran IPA disokolah masih didominasi oleh metode ceramah dan perpusat pada guru, pengunaan bahan ajar masih terbatas pada buku. Siswa merasa kesulitan memahami konsep fisika karena hanya mengunakan metode ceramah. Sehingga rendahnya motivasi dan keterlibatan siswa dalam proses pembelajaran. Kesimpulan dari penelitian ini adalah diperlukan suatu model pembelajaran yang dapat meningkatkan partisipasi, kerja sama, dan motivasi belajar siswa. Salah satu pilihan yang dapat diterapkan adalah model pembelajaran kooperatif tipe Teams Games Tournament (TGT).    Kata Kunci: Teams Games Tournament (TGT), respon guru, respon siswa, motivasi belajar, pembelajaran IPA

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