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All Journal Jurnal Teknik Industri KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan TEKMAPRO Journal of Industrial Engineering and Management JISI UMJ (Jurnal Integrasi Sistem Industri UMJ) REKAYASA Sistemasi: Jurnal Sistem Informasi Briliant: Jurnal Riset dan Konseptual Journal of Industrial Engineering Management EKONOMIS : Journal of Economics and Business Jurnal Sistem Cerdas STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Matrik : Jurnal Manajemen dan Teknik Industri Produksi JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Teknika Jurnal Teknik Industri Terintegrasi (JUTIN) Nusantara Science and Technology Proceedings Indonesian Journal of Industrial Engineering & Management Juminten : Jurnal Manajemen Industri dan Teknologi Journal La Lifesci Journal La Multiapp JURNAL ILMIAH GLOBAL EDUCATION Indonesian Journal of Innovation Studies Jurnal Pengbdian Teknik Mesin Golden Ratio of Mapping Idea and Literature Format JAMBURA: JURNAL ILMIAH MANAJEMEN DAN BISNIS Jurnal Sains dan Teknologi Jurnal Teknologi dan Manajemen Industri Terapan Jurnal Teknik Mesin, Industri, Elektro dan Informatika Journal of Creative Student Research Electronic Journal of Education, Social Economics and Technology IIJSE Journal Serambi Engineering (JSE) Jupiter: Publikasi Ilmu Keteknikan Industri, Teknik Elektro dan Informatika Advance Sustainable Science, Engineering and Technology (ASSET) Jati Emas (Jurnal Aplikasi Teknik dan Pengabdian Masyarakat) Academia Open Jurnal Kendali Teknik dan Sains
Rr. Rochmoeljati
Universitas Pembangunan Nasional Veteran Jawa Timur
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Journal : academia open

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Sentiment Analysis and Complaint Patterns on GoFood Merchants Using Naïve Bayes and Apriori: Analisis Sentimen dan Pola Komplain pada Merchant GoFood Menggunakan Naïve Bayes dan Apriori Alfan Afiyudin; Rr. Rochmoeljati
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.11401

Abstract

General Background: The rapid advancement of digital technology has catalyzed the proliferation of online service platforms, intensifying competition among providers to deliver optimal user experiences. Specific Background: In this landscape, food delivery services such as GoFood Merchant play a crucial role, yet user dissatisfaction remains a persistent challenge. Knowledge Gap: Despite the abundance of user-generated reviews, comprehensive sentiment and pattern analysis for GoFood Merchant remains limited, particularly in the integration of sentiment classification with pattern discovery and actionable recommendations. Aims: This study aims to analyze user sentiment toward the GoFood Merchant application using the Naïve Bayes algorithm and identify common complaint patterns via the Apriori algorithm, followed by solution formulation through the 5W+1H approach. Results: Utilizing 1,243 Play Store reviews, the sentiment classification model achieved an accuracy of 87%, indicating robust performance. Further analysis of negative reviews revealed five dominant keywords: “driver,” “order,” “aplikasi,” “resto,” and “iklan.” Novelty: The integration of sentiment analysis, association rule mining, and structured problem-solving provides a novel framework for understanding and addressing user dissatisfaction. Implications: The findings offer strategic insights for enhancing user experience and strengthening GoFood Merchant’s competitive advantage in the saturated online service marketplace. Highlights: Identifies dominant user complaints using data mining techniques. Combines sentiment classification with complaint pattern discovery. Provides actionable recommendations using the 5W+1H framework. Keywords: Sentiment Analysis, Naïve Bayes, Apriori Algorithm, User Complaints, GoFood Merchant
High User Satisfaction and Improvement Priorities in Wondr by Bank Negara Indonesia: Kepuasan Pengguna yang Tinggi dan Prioritas Peningkatan di Wondr oleh Bank Negara Indonesia Dewi Aisarunnisa' Maunah; Rr. Rochmoeljati
Academia Open Vol. 10 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.10.2025.12253

Abstract

General Background: The rapid advancement of digital technology has transformed the banking industry, leading to the development of mobile banking applications that emphasize user experience and satisfaction. Specific Background: Bank Negara Indonesia (BNI) introduced the Wondr by BNI application as an enhancement to its previous mobile banking service, offering a more integrated financial ecosystem. However, its relatively low user rating compared to its predecessor indicates potential service quality issues. Knowledge Gap: Previous studies have rarely integrated Google’s HEART Metrics and Importance Performance Analysis (IPA) to holistically assess mobile banking user experience. Aims: This study aims to evaluate user satisfaction with Wondr by BNI using HEART Metrics—covering Happiness, Engagement, Adoption, Retention, and Task Success—combined with IPA to identify improvement priorities. Results: The findings reveal that overall satisfaction levels are high, with Happiness, Adoption, and Retention exceeding the 80% usability target, while Engagement and Task Success require improvement. Most attributes fall into the “Maintain Performance” quadrant, though several aspects such as responsiveness and notification reliability remain suboptimal. Novelty: This research uniquely applies a dual-method framework to uncover both experiential and performance-based gaps in mobile banking services. Implications: The results provide strategic insights for optimizing user experience and guiding continuous digital service innovation in Indonesia’s banking sector. Highlights: Combines HEART Metrics and IPA for comprehensive UX evaluation. Identifies key improvement areas in engagement and task success. Provides strategic guidance for enhancing digital banking services. Keywords: HEART Metrics, Importance Performance Analysis, User Satisfaction, Mobile Banking, Wondr by BNI
Integrated FTA and FMEA for HDPE Plastic Bag Defect Reduction Fitria Novi Ariestiyani; Rr. Rochmoeljati
Academia Open Vol. 11 No. 1 (2026): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.11.2026.13369

Abstract

General Background: Quality risk mitigation is essential for maintaining production stability and product conformity in manufacturing industries. Specific Background: PT XYZ produces High Density Polyethylene plastic bags in various sizes, with the 15×30 size exhibiting the highest defect rate during January–September 2025, particularly folded, incorrect cutting, asymmetrical cut, and no handle hole defects. Knowledge Gap: Previous studies generally applied Fault Tree Analysis (FTA) or Failure Mode and Effect Analysis (FMEA) separately or focused on limited defect types and specific production stages, resulting in less comprehensive defect evaluation. Aims: This study aims to systematically identify root causes and determine improvement priorities for dominant defects in 15×30 HDPE plastic bag production through an integrated FTA and FMEA framework. Results: FTA identified 15 critical basic events associated with operator control, machine condition, material handling, and maintenance practices. Defect probability values were 7.079% for folded, 9.314% for incorrect cutting, 9.741% for asymmetrical cut, and 6.635% for no handle hole defects. FMEA results showed the highest Risk Priority Number for folded defects (RPN 240), followed by incorrect cutting (RPN 210), asymmetrical cut (RPN 180), and no handle hole (RPN 175). Novelty: The study integrates deductive root cause modeling and quantitative risk prioritization within a single analytical structure applied to a specific industrial product size. Implications: The proposed actions, including SOP standardization, preventive maintenance, calibration, and operator monitoring, provide structured guidance for systematic defect reduction and sustainable quality management in HDPE plastic bag manufacturing. Highlights: Fifteen critical basic events were mapped across operator, machine, material, and maintenance factors. Incorrect cutting and asymmetrical cut showed the largest probability values among dominant nonconformities. Risk prioritization placed folded nonconformity at the top improvement rank based on RPN assessment. Keywords: Fault Tree Analysis, Failure Mode and Effect Analysis, HDPE Plastic Bags, Defect Probability, Risk Priority Number  
Waste Analysis in Herbal Oil Product Packaging Using the Lean Six Sigma Method: Analisis Pemborosan pada Pengemasan Produk Minyak Herbal Menggunakan Metode Lean Six Sigma Dama Yanti, Alviani; Rochmoeljati, Rochmoeljati
Academia Open Vol. 11 No. 1 (2026): June
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/acopen.11.2026.14053

Abstract

General Background: Production inefficiencies in pharmaceutical manufacturing are frequently associated with process waste and packaging defects that reduce operational performance and product quality. Specific Background: In herbal oil production, the outer packaging stage exhibited recurring defects, motion waste, and overprocessing activities that increased lead time and generated non-value-added activities. Knowledge Gap: Previous studies on Lean, Six Sigma, and Lean Six Sigma have predominantly focused on general manufacturing industries and rarely integrated Value Stream Mapping, VALSAT, Fishbone Diagram, and Failure Mode and Effect Analysis within a comprehensive DMAIC framework for pharmaceutical herbal packaging processes. Aims: This study aims to identify dominant waste types, analyze the root causes of packaging defects, and formulate improvement recommendations using an integrated Lean Six Sigma DMAIC approach. Results: The findings indicate that the dominant wastes were defect, motion, and overprocessing. The major packaging defects consisted of wrinkled labels, untidy individual bottle wrapping, and perforated group packaging, with untidy individual bottle wrapping showing the highest Risk Priority Number of 294. The proposed improvements eliminated non-value-added activities and reduced necessary non-value-added activities, decreasing production lead time from 7,497.4 minutes to 5,382.4 minutes while increasing Process Cycle Efficiency from 26.89% to 37.46%. The process achieved a sigma level of 3.59 with an average DPMO of 18,016. Novelty: This study integrates Lean Six Sigma DMAIC with VSM, VALSAT, PAM, Fishbone Diagram, and FMEA to provide a structured risk-based evaluation of waste and defects in herbal oil packaging operations. Implications: The results demonstrate that systematic waste reduction and defect mitigation support higher production efficiency and operational performance in pharmaceutical manufacturing. Highlights: Defect, motion, and overprocessing emerged as the dominant production waste categories. Risk evaluation identified untidy individual bottle wrapping as the highest-priority failure mode. Proposed process changes shortened manufacturing duration and raised Process Cycle Efficiency. Keywords: Lean Six Sigma, DMAIC, FMEA, Herbal Oil Packaging, Process Cycle Efficiency
Co-Authors Adham Roihan Azriel Irfani Afriza, Ajeng Agustina, Mega Alfan Afiyudin Alief Wahyu Pratama Alvionita, Selvi Amalia, Rochmatul Amelia, Avril Firda Annandita, Alifia Rizky Benedictus V.B.P. Benedictus Vibriyanto Bagas Prakosa Berliana D. Novitasari Berliana Dian Novitasari Brilian, Delinda Budiani, Dian Nissa Fitri Bustomy, Andrean Cantika, Devani Nendi Aurillia Chori Dwi Azizah Christabela Jesselyn Citra Wahyuning Dama Yanti, Alviani Dewi Aisarunnisa' Maunah Dimas Wandhika D Dira Ernawati Endang Pudji Widjajati Erlangga, Muhammad Daffa Erlina Erlina Fadilla Umeida Putri Faishal Hidayatulloh Faizal, M. Rizki Nur Fanani, Handre Syahrul Farica Raisa Vania Faris R, Mohamad Fatharisa Ingke Maulida Fatihul F, Ahmad Fenny Novianti Ferina Indah Lusiana Ferina Indah Lusiana Ferraldo Kusuma Artono Putra Ferraldo Kusuma Artono Putra Fibio Isnando Hariatmaja Pradana Fibio Isnando Hariatmaja Pradana Fitria Novi Ariestiyani Fuadah, Layin Ike Jihan Nabila Iriani Iriani Isna Nugraha Isna Nugraha Ivonne Rakha Salsabila Ivonne Rakha Salsabila Kamal Husein Kamal Husein Kezia Grace Sudarman Khusnun Nabila Khusnun Nabila Layin Fuadah Marcella, Sania Mardila Nur Imamah Marisa Tri Indra Nayu Aini Kurnila Marsya Laila Ahyaliya Maunah, Dewi Aisarunnisa' Meisufi, Ruro Wiranti Moch Taufik Hidayat Moch Taufik Hidayat Mochamad Ismail Zakaria Mochamad Ismail Zakaria Muhammad Hadziqul Afkar Muhammad Ilham Romadoni Muhammad Ricky Suryawan Muhammad Rizki Kurniawan Muhammad Zainur Roziqin Mutia Meilanda Nababan, Yohanes Nafa Artha Cahaya Mulia Nafa Artha Cahaya Mulia Nafa Artha Cahaya Mulia Nugraha, Isna Nugroho, Rosa Novarian Agninditya Pradana, Billy Gandis Prakosa, Albertus Adriyanto Satrio Pramudya, Kaka Arya Prasetyo Mukti Prasetyo Mukti Pratama, Alief Wahyu Primadhiya, Fairuzzayyan Pristyanto, Yafie Putra, M. Rizqy Ifaldhi Qanita Zahira Muhar Arifin Qothrunnada, Alisa R. A. Luthfi Asia Fergisya Raditya Dwi Firmansyah Raditya Y E Rafida, Halimas Nafi Rahandi Ramadhan Rahmadianto, Raihan Rahmawati, Dea Ramadhan, Muhammad Afif Ramadhani, Muthia Dita Rauhul Rahman Adam Rebeka P, Adhe Ridwan Alief Ramdhan Adi Ruro Wiranti Meisufi Sastya, Nur Cholifah Shafa, Aura Diva sholeha, fitriatus Sinaga, Boriski Sinta Dewi Sofia Fitri Anasari Sofia Fitri Anasari Subono, Muhammad Wibbie Wiweka Sumiati Sumiati Surya M Ramadhan Syarifah, Faranisa Aulia Ar Rahma Tiara Nuriyah Sani Tivani Nava Arier Tranggono Tranggono Valentino, Eki Vaundra Cunning Hangesthi Vaundra Cunning Hangesthi Widyarsa, Destiara Nabila Widyawati, Diana Windra R, Harys Wisnu Wardana, Wisnu Ya Fachrul Rasyid Ya Fachrul Rasyid Yustina N Yustina Ngatilah Zella Azzahra Achmadani