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All Journal Teknika: Jurnal Sains dan Teknologi Journal Industrial Servicess Jurnal Studi Manajemen dan Bisnis INAQUE: Journal of Industrial & Quality Engineering EKONOMI, KEUANGAN, INVESTASI DAN SYARIAH (EKUITAS) JELAJAH: Journal of Tourism and Hospitality Journal of Systems Engineering and Management
Aditya Rahadian Fachrur
Universitas Sultan Ageng Tirtayasa
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Transportation

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Perbaikan Kualitas Wire Rod Steel Di PT. Krakatau Steel (persero) Tbk. Cilegon Menggunakan Pendekatan Six Sigma Aditya Rahadian Fachrur; Putu Dana Karningsih
Jurnal Studi Manajemen dan Bisnis Vol 4, No 1 (2017): Juni
Publisher : Trunojoyo University of Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jsmb.v4i1.3221

Abstract

Penelitian ini bertujuan untuk memberikan rekomendasi perbaikan proses produksi wire rod steel di PT. Krakatau Steel (persero) Tbk. Cilegon dengan menggunakan pendekatan six sigma. Tingginya jumlah defectwire rod steel menyebabkan Divisi Wire Rod Mill selalu melebihi batas defect yang diizinkan oleh perusahaan dan berakibat pada kerugian. Pendekatan six sigma dilakukan dengan menggunakan beberapa metode seperti menghitung defect permillion opportunity, level sigma, analisa pareto, diagram ishikawa dan borda count methods. Hasil dari penelitian menunjukkan bahwa DPMO dari produk wire rod steel adalah sebesar 899,978 dengan level sigma 4,621σ. Berdasarkan analisa pareto bahwa defect yang paling sering terjadi adalah defect laps dengan jumlah 288,512 Ton dan penyebab-penyebab utama terjadinya defect adalah kerusakan guide dan operator tidak melakukan adjustment bar. Rekomendasi yang dapat diberikan pada PT. Krakatau Steel (persero) Tbk. Cilegon adalah maintenance harus tetap dijalankan meskipun sedang tidak produksi, melibatkan bagian perawatan dalam memperbaiki kerusakan, program direct buying untuk sparepart di bawah harga tertentu melalui Prima Koperasi Krakatau Steel (Primkokas), Menambah item sparepart yang ada didalam kontrak perjanjian dengan vendor, melakukan proses pendampingan dan mentoring karyawan terutama pada karyawan baru.
Analisis sistem antrian model G/G/1 pada fasilitas layanan kesehatan Aditya Rahadian Fachrur; Laura Novel Hutagaol; Rendiansyah Rendiansyah
Journal of Systems Engineering and Management Vol 1, No 1 (2022)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/joseam.v1i1.17547

Abstract

Health care is one of the services that must maintain excellent service quality, particularly in terms of patient wait times, including for XYZ health care facilities. XYZ health care services include administration or registration, health check-ups, and drug collection. Queues of patients are frequently encountered during the outpatient service process at XYZ health facilities. These queues often occur when patients perform registration administration, allegedly because there is only one registration counter. This problem will certainly affect patient satisfaction because service waiting time is a health facility customer satisfaction indicator. This study aims to analyze the queuing system for administrative services and health checks using the queuing theory method to obtain a queuing model and queuing performance. The results of this study indicate that the XYZ health facility queuing model is G/G/1/FIFO/I/I with an arrival rate for each service stage of 13 and 11 patients per hour, respectively, with 11 and 13 patients. Steady-state conditions are not met in administrative services because the arrival rate is higher than the service level, so the performance of the queuing system can be analyzed only on health check services, with the result that the probability of service facilities experiencing idle is 0.12. The average number of patients in the queue is one patient per hour, and the average number of patients in the system is four people per hour, while the waiting time for health check services is 37.0820 minutes per patient. The average length of time is 37.0820 minutes per patient. Patients are in the health care system for 41.9714 minutes per patient.
Improving the quality of mobile banking services using the integration of text mining, mobile banking service quality, and Quality Function Deployment Bahauddin, Achmad; Ulfah, Maria; Boru Angin, Nurul Fadillah; Fachrur, Aditya Rahadian
Journal Industrial Servicess Vol 10, No 1 (2024): April 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i1.25907

Abstract

Customer service quality is a key performance indicator that directly impacts a company's image. This study identified potential issues with a mobile banking app (m-banking) based on its low rating on the Google Play Store compared to similar apps. The app's rating likely reflects user satisfaction with the m-banking service. To address these concerns and improve service quality based on user feedback (voice of customer), a study was conducted using three methods: text mining, mobile banking service quality analysis, and Quality Function Deployment (QFD). The text mining method analyzed sentiment from comments on the Google Play Store. It employed a Support Vector Machine (SVM) algorithm, achieving high accuracy (0.86), precision (0.86), recall (0.84), F1-score (0.85), and AUC (0.84). Negative sentiment analysis identified five dimensions encompassing 15 attributes of m-banking service quality. These attributes were then incorporated into a questionnaire distributed to 100 respondents. Six attributes with the lowest gap values were identified as priority attributes, representing the most critical customer concerns. These attributes were used as the "voice of the customer" in the QFD method. By constructing a House of Quality (HoQ) matrix, the study established a priority ranking of technical responses. These responses include strategies to optimize tools, application features, and memory usage, reduce excessive animation and the use of live wallpapers, create an update mechanism, provide content localization features, continuously incorporate customer feedback into application improvements.
Building a resilient supply chain: Mitigating risks in label-holder production Ulfah, Maria; Bahauddin, Achmad; Ekawati, Ratna; Sonda, Atia; Muharni, Yusraini; Fachrur, Aditya Rahadian
Journal Industrial Servicess Vol 10, No 1 (2024): April 2024
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v10i1.24497

Abstract

This study investigates risk mitigation strategies within the label holder supply chain at a company specializing in convection-produced label holders. The House of Risk approach will be used to identify and prioritize potential risks and their sources throughout the supply chain activities, as defined by the Supply Chain Operation Reference (SCOR) method. Common supply chain risks include torn mica, detached stitches, and improper strap lengths. The risk identification process within the label holder supply chain activities resulted in 30 risk events, 27 risk agents, and 13 prioritized risk mitigation actions. These actions include regular routine machine maintenance, employee briefings, identifying backup suppliers, consistent performance monitoring, station coordination before production, machinery and tool upgrades for quality assurance, yearly shutdowns/maintenance, establishing customer contracts, user feedback coordination, training for raw material receiving personnel, implementing periodic product testing, enacting efficient inventory management practices, and improving finished goods quality management.
Supply chain performance analysis using discrete system simulation method: A case study in a furniture company Trenggonowati, Dyah Lintang; Ulfah, Maria; Ridwan, Asep; Bahauddin, Achmad; Ekawati, Ratna; Sonda, Atia; Umyati, Ani; Fachrur, Aditya Rahadian; Yadi, Yayan Harry
Journal Industrial Servicess Vol 9, No 1 (2023): April 2023
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jiss.v9i1.19049

Abstract

As time progresses, the evolving industrial world demands that companies devise the best strategies to achieve their desired goals. A well-designed system is expected to increase the profitability of the company itself. CSD is an interior furniture and interior design studio located in the city of Cilegon, Banten. The challenge faced by CSD is the inability to meet order deadlines during periods of high demand. The objective of this study is to assess the level of machine utility within the existing process and provide recommendations to achieve an optimal process. The methodology employed includes system simulation and model development using Promodel software. Additionally, statistical tests, model validation, and ANOVA tests were conducted. Based on the results, it was determined that the level of machine utility at CSD is 17.48% for shaping planning, 30.08% for grinding, 14.88% for assembly, and 29.98% for finishing. The proposed solution, scenario or proposal 2, suggests combining the assembly and finishing workstations, resulting in increased machine utility.
Design of LPG transport aids to prevent musculoskeletal risks Dewantari, Nustin Merdiana; Fachrur, Aditya Rahadian; Mariawati, Ade Sri; Akbari, Rizky; Ferdiansyah, Muhammad; Annisa, Findi Choerun
Journal Industrial Servicess Vol 9, No 1 (2023): April 2023
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/jiss.v9i1.19047

Abstract

The Central Statistics Agency of Indonesia (BPS) has recorded an increase in the use of liquefied petroleum gas (LPG) by the public over the last seven years. This increase is due to the government changing its policy from using fuel oil to LPG. LPG is essential for the community as a kitchen fuel to meet their needs and for resale. Distributing LPG gas is crucial to meeting the community's needs. However, one of the distribution processes involves manual loading and unloading, which can cause musculoskeletal complaints. Therefore, tools that can facilitate work are necessary. This study aims to reduce the risk of musculoskeletal disorders by examining the working posture of transporting LPG gas at a LPG distributor in Indonesia. The study proposes a tool design to solve the problem of high work posture. The results of data processing and analysis show that the design of assistive devices can reduce the risk of work posture.
Perbandingan kinerja peta kendali np klasik dan np bayes produk roti di UMKM BenRoti Snack Box Musthofa, Faris; Watsiqoh, Siti; Angin, Nurul Fadillah Boru; Sukamto, Aurora Elvaretta; Fachrur, Aditya Rahadian
Journal of Systems Engineering and Management Vol 2, No 1 (2023)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/joseam.v2i1.19323

Abstract

Penelitian ini bertujuan untuk membandingkan tiga jenis peta kendali np, yaitu peta kendali np klasik, peta kendali np bayes prior konjugat, dan peta kendali np bayes prior non-informatif dalam mengendalikan kualitas produk di UMKM BenRoti SnackBox. Saat ini, UMKM BenRoti SnackBox belum menggunakan alat pengendalian kualitas untuk produk-produknya. Oleh karena itu, penelitian ini dilakukan untuk membandingkan efektivitas ketiga jenis peta kendali np dalam membantu UMKM BenRoti SnackBox dalam mengendalikan kualitas produknya. Perbandingan dilakukan dengan menggunakan nilai ARL (Average Run Length) sebagai ukuran kinerja dari ketiga jenis peta kendali np. ARL adalah rata-rata jumlah sampel yang diperlukan sebelum munculnya suatu sinyal atau peringatan bahwa kualitas produk telah menyimpang dari spesifikasi yang ditetapkan. Hasil dari penelitian ini menunjukkan bahwa peta kendali np bayes prior non-informatif memberikan hasil yang lebih baik dalam mengendalikan kualitas produk dibandingkan dengan peta kendali np klasik dan peta kendali np bayes prior konjugat. Peta kendali np bayes prior non-informatif memberikan nilai ARL yang relatif lebih kecil daripada peta kendali np klasik dan peta kendali np bayes prior konjugat, yang berarti waktu yang dibutuhkan untuk mendeteksi perubahan kualitas produk menjadi lebih singkat. Namun, tidak terdapat perbedaan yang signifikan antara peta kendali np klasik dan peta kendali np bayes prior konjugat. Sehingga, dapat disimpulkan bahwa penggunaan peta kendali np bayes prior non-informatif dapat membantu UMKM BenRoti SnackBox dalam mengendalikan kualitas produknya lebih efektif daripada peta kendali np klasik dan peta kendali np bayes prior konjugat.
Sentiment Analysis of Hotel Reviews in Anyer Beach Tourism Area: A Lexicon-Based Text Mining Approach Fachrur, Aditya Rahadian
JELAJAH: Journal of Tourism and Hospitality Vol. 5 No. 2 (2024)
Publisher : Universitas Terbuka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33830/jelajah.v5i2.10264

Abstract

This study aims to analyze tourist sentiment towards hotels in the Anyer beach tourism area through online reviews. Sentiments and emotions expressed in these reviews were analyzed using a lexicon-based approach from the National Research Council (NRC) lexicon, which includes emotion categories such as anger, fear, sadness, joy, and disgust. Hotel review data were collected from TripAdvisor, and the analysis involved text preprocessing steps such as cleaning, case folding, stemming, and stopword removal. The sentiment analysis results reveal that most tourists provided positive reviews, with only 14.06% of the reviews displaying negative sentiment. Word cloud visualization identified the words "bad" and "dirty" as frequently appearing in negative reviews, likely pointing to cleanliness and service quality issues as the primary reasons for dissatisfaction. Emotional analysis showed dominant feelings of sadness, anger, disgust, and fear, likely triggered by unmet expectations regarding cleanliness and comfort during their stay. Based on these findings, it is recommended that hotel management in the Anyer beach tourism area address these concerns by implementing regular cleaning routines and staff training to enhance hotel service quality.
Perancangan Detail Engineering Design (DED) dalam Upaya Revitalisasi Kawasan Permukiman Kumuh di Kelurahan Margaluyu Kota Serang Ramadhan, Tubagus Raihan; Sonda, Atia; Ulfah, Maria; Fachrur, Aditya Rahadian; Dewantari, Nustin Merdiana; Bahauddin, Achmad; Lufianawati, Dina Estining Tyas; Mariawati, Ade Sri; Herlina, Lely; Ummi, Nurul; Mutaqin, Ade Irman Saeful
Journal of Systems Engineering and Management Vol 3, No 2 (2024)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/joseam.v3i2.29493

Abstract

Permukiman kumuh di berbagai wilayah, termasuk di Kelurahan Margaluyu, Kota Serang, seringkali dihadapkan pada infrastruktur yang buruk, kepadatan penduduk tinggi, serta terbatasnya akses ke layanan dasar seperti sanitasi dan air bersih. Masalah ini diperparah oleh urbanisasi dan pertumbuhan penduduk yang pesat, sehingga diperlukan upaya revitalisasi untuk meningkatkan kualitas lingkungan. Salah satu langkah penting dalam upaya ini adalah perancangan Detail Engineering Design (DED), yang bertujuan menghasilkan gambar teknis lengkap dan spesifik sebagai panduan dalam pelaksanaan proyek. Dalam konteks ini, DED untuk jalan lingkungan dan sistem drainase di Kelurahan Margaluyu dirancang untuk meminimalisir kesalahan pelaksanaan dan menjamin keberlanjutan proyek. Kriteria konstruksi yang diusulkan mencakup jalan dengan fungsi penghubung antar kawasan dan sistem drainase untuk mengendalikan limpasan air hujan serta limbah. DED diharapkan dapat berfungsi sebagai landasan bagi peningkatan kesejahteraan masyarakat melalui perbaikan infrastruktur yang terstruktur dan berkelanjutan. Kesimpulan dari studi ini menunjukkan pentingnya pendekatan perencanaan yang terstruktur, serta koordinasi lintas pemangku kepentingan untuk memastikan desain yang diusulkan sesuai dengan kebutuhan masyarakat dan berdampak positif terhadap kualitas hidup di kawasan tersebut.
Clustering student satisfaction using SERVQUAL and K-means methods Gunawan, Akbar; Wahyuni, Nuraida; Wibowo, Habibi Urfa; Fachrur, Aditya Rahadian; Khatili, Putiri Buana; Barleany, Dhena Ria
Jurnal Teknika Vol 20, No 2 (2024): Available Online in November 2024
Publisher : Faculty of Engineering, Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/tjst.v20i2.29060

Abstract

Student satisfaction is a critical indicator of higher education service quality. Higher education institutions must maintain student satisfaction to ensure service quality. This study measures and analyzes student satisfaction at higher education institutions using the SERVQUAL model to inform service improvement strategies. A survey assessed five key service dimensions: Tangibles, Reliability, Responsiveness, Assurance, and Empathy. Gap analysis and non-hierarchical K-means clustering identified six student groups with varying satisfaction levels. Cluster 1, with an average gap score of -3.00 and a Customer Satisfaction Index (CSI) of 65.68%, was categorized as 'less satisfied' and prioritized for improvement. Importance Performance Analysis (IPA) identified critical service attributes. Improvement strategies; developed using the 5W+1H framework (Who, What, Where, When, Why, and How); emphasize enhanced communication, faster service delivery, strengthened employee competencies, and a student-centered organizational culture. These findings provide a robust foundation for strategic decision-making to enhance service quality in higher education institutions.
Co-Authors Achmad Bahauddin Akbari, Rizky Angin, Nurul Fadillah Boru Annisa, Findi Choerun Aulia Ikhsan Barleany, Dhena Ria Boru Angin, Nurul Fadillah C Permana, Fikri Dewantari, Nustin Merdiana Dewantari, Nustin Merdiana Ekawati, Ratna Ferdiansyah, Muhammad Gunawan, Akbar Herlina, Lely Ikrima, Qonitati Khatili, Putiri Buana Laura Novel Hutagaol Lufianawati, Dina Estining Tyas Mahendra, Zahra Mariawati, Ade Sri Muharni, Yusraini Musthofa, Faris Mutaqin, Ade Irman Saeful Nurul Ummi Nurulhaq Putri, Ayu Panji Wicaksono, Chaesa Putu Dana Karningsih Ramadhan, Tubagus Raihan Ratna Ekawati Rendiansyah Rendiansyah Ridwan, Asep Septian, Heggy Sonda, Atia Sonda, Atia Sukamto, Aurora Elvaretta Trenggonowati, Dyah Lintang Ulfah, Maria Ulfah, Maria Ulfah, Maria Ummi, Nurul Umyati, Ani Wahyuni, Nuraida Watsiqoh, Siti Wibowo, Habibi Urfa Yadi, Yayan Harry