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All Journal CommIT (Communication & Information Technology) JURNAL PASTI (PENELITIAN DAN APLIKASI SISTEM DAN TEKNIK INDUSTRI) Jurnal Optimasi Sistem Industri Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Teknik Industri : Jurnal Hasil Penelitian dan Karya Ilmiah dalam Bidang Teknik Industri ComTech: Computer, Mathematics and Engineering Applications Management Studies and Entrepreneurship Journal (MSEJ) Jurnal Scientia Media Bina Ilmiah Jurnal Polimesin
Ardhianiswari Diah Ekawati, Ardhianiswari Diah
Industrial Engineering Department, BINUS Graduate Program-Master Of Industrial Engineering, Bina Nusa University, Jakarta, Indonesia 11480
Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Transportation Other

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Quality improvement using lean six sigma in air conditioning products Purwanto, Cipto; Jayanti, Brian Sila; Bernard, Fransiska Sekarlati; Ekawati, Ardhianiswari Diah
Jurnal Polimesin Vol 22, No 5 (2024): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i5.5408

Abstract

Air Conditioners (AC) are essential electronic products for residential and industrial buildings in tropical countries or during warm weather in general. The penetration ratio of electronic Air Conditioners (AC) has been increasing every year. Data collection and processing were conducted directly by the author through observation, measurement, and calculation on the heat exchanger production of Air Conditioners (AC). In the production cost of Air Conditioners (AC), the heat exchanger accounts for the second highest cost after the compressor making up 19% of the total cost. The high cost is caused by pipe leaks, with a percentage of 73.7%. This research aims to analyze the improvement of Air Conditioner (AC) production quality using the Six Sigma method. The defect rate in the heat exchanger, evaluated through the Define, Measure, Analyze, Improve, Control (DMAIC) method originating from Six Sigma, was found to be 1,144.8 defects per million opportunities. Further analysis was conducted with the Failure Tree Analysis (FTA) and Failure Mode and Effect Analysis (FMEA) methods. This research was conducted at XYZ company by conducting interviews and observations for 3 months. FMEA and FTA analysis resulted in the top two failure risks based on the Risk Priority Number (RPN): flaring diameter too big and unstable brazing skill. In the manual brazing process, it was found that work by operators with level A certification produced 9% below standard outcomes. An improvement was obtained by changing the punch flaring size to 8.5mm and conducting skill certification and training for brazing operators. The results of the proposed improvement implementation led to a reduction in the DPMO value to 403.35, equivalent to a decrease of 64.7%. The defect ratio in production decreased by 38.1%, exceeding the previous target of 26.2%, equivalent to $31.96/month/unit. The results of this study are horizontal, allowing the implementation of improvements made in the heat exchanger production process to be expanded to other cooling electronic production processes.
The Intention to Use of a New Mobile Apps: A Case from Customers of an Indonesian Electrity Company Eriyandini, Andhita; Ekawati, Ardhianiswari Diah
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36418/syntax-literate.v9i2.15212

Abstract

Mobile apps are now an integral part of our daily life which brought quite significant changes in consumer behavior. Therefore, the development of electronic service quality becomes a crucial factor to consider in determining whether digital transformation affects customer satisfaction. PT PLN (Persero), the Indonesian Electricity Company launched their new mobile apps in 2022 with the objective to provide better customer engagement and service. New PLN Mobile is an application used by PT PLN (Persero) to facilitate customers in enjoying every service provided by the company. This study integrates constructs from the mobile-technology acceptance model (M-TAM) and unified theory of acceptance and use of technology model (UTAUT) into a new theoretical model and tests them to a one of rural regions in Indonesia. The study was conducted by using a structured questionnaire to collect data from 566 respondens of customers of PT PLN (Persero) PLN ULP Jeneponto. The research model was assessed using the partial least squares structural equation model (PLS-SEM) methodology, facilitated by the Smart PLS software to provide insights into the factors that determine the acceptance of technology, which can explain user behavior. The analysis results are expected to identify the factors of customer readiness in adopting the New PLN Mobile electronic service in Jeneponto Regency. The results revealed significant relationships for all of the hypotheses. Mobile Usefulness to Intention to Use (H1), Mobile Ease of Use to Intention to Use (H2), Social Influence to Intention to Use (H3), Facilitating Condition to Intention to Use (H4) and Intention to Use to Actual Use (H5) showed t-stat values respectively, surpassing the standard test value. In the results, it can also be observed that the most significant factor influencing Intention to Use is Facilitating Condition.
Improving Service Quality in a Tutoring Institutions using Fuzzy-Servqual Krisnawati, Febrian; Ekawati, Ardhianiswari Diah
Jurnal PASTI (Penelitian dan Aplikasi Sistem dan Teknik Industri) Vol 19, No 3 (2025): Jurnal PASTI
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Quality improvement is a business strategy that emphasizes fulfilling consumer desires. This study aims to determine consumer needs, in this case students, as a reference for improving the business quality of tutoring institutions by using the Fuzzy-Servqual method to sort out service quality values that can be used to determine priority handling. The evaluation criteria are determined based on the five dimensions of the servqual model. Fuzzy-servqual is applied to get the importance weight of each servqual model criterion. The dimension of physical evidence (tangibles) is a priority that needs to be evaluated, with a gap value of -0.08. The top priority is Availability of Green Areas -0.51, followed by Completeness, comfort and cleanliness of the library -0.44, and Comfort, cleanliness and safety of study rooms -0.24. The conclusion obtained is that the application of Fuzzy Servqual can be applied to measure the quality of service in a tutoring institution based on predetermined indicators. Future research should adopt a more comprehensive approach by considering various perspectives for a thorough understanding of improving the quality of services in tutoring institutions
Co-Authors Anita Maharani Ariska Dithya Pratiwi Astri Desiana Astri Desiana Astri Desiana Bernard, Fransiska Sekarlati Chandra Hosen Eriyandini, Andhita Febriana, Trisna Jayanti, Brian Sila Joko Santoso Krisnawati, Febrian Ni Made Dewi Ayu Murti Purwanto, Cipto Trisna Febriana Yunita Kartika Sari Yunita Kartika Sari, Yunita Kartika