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All Journal Proceeding International Conference on Information Technology and Business Jurnal Sistem Cerdas Juminten : Jurnal Manajemen Industri dan Teknologi Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Jurnal Teknik Mesin, Industri, Elektro dan Informatika Sammajiva: Jurnal Penelitian Bisnis dan Manajemen Journal Serambi Engineering (JSE) Konstruksi: Publikasi Ilmu Teknik, Perencanaan Tata Ruang dan Teknik Sipil Jurnal Pengabdian Dian Mandala International Journal of Mechanical, Industrial and Control Systems Engineering
Dira Ernawati
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Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health

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ANALISA RESCHEDULE REPAIR KM STU MENGGUNAKAN METODE CRITICAL CHAIN PROJECT MANAGEMENT Sari, Zulia Wulan; Dira Ernawati
Teknika STTKD: : Jurnal Teknik, Elektronik, Engine Vol 10 No 2 (2024): TEKNIKA STTKD: JURNAL TEKNIK, ELEKTRONIK, ENGINE
Publisher : Sekolah Tinggi Teknologi Kedirgantaraan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56521/teknika.v10i2.1289

Abstract

PT XYZ is the largest shipyard company in Indonesia. As the largest shipyard, PT XYZ is required to PT XYZ is the largest shipyard company in Indonesia. As the largest shipyard, PT XYZ is the largest shipyard company in Indonesia. As the largest shipyard, PT XYZ is required to complete new shipbuilding and repair projects quickly, in accordance with the agreement stated in the contract agreed between the shipowner or his representative and the shipyard. In this case, project scheduling planning plays a very important role to ensure that each stage of work can be completed efficiently and on time. However, the schedule designed from the start is not always fully aligned with the implementation in the field, so that the work has the potential to be delayed from the specified time. The delay also occurred in the KM STU repair project carried out by PT XYZ. Therefore, a reschedule was carried out using the Critical Chain Project Management method. By implementing the CCPM method, the results showed that the project duration was 13 days with an additional project buffer of 3.5 days and a cost of IDR 266,000,000 which was the same as the normal duration or initial condition. However, if the buffer time in the CCPM duration is fully used, the total cost obtained will increase to IDR 304,080,000 or around 14.3% of the CCPM cost without a buffer. Meanwhile, worker productivity by implementing the Critical Chain Project Management method has increased compared to before. Previously, the average worker productivity was 27.45/mandays. Then after implementing the CCPM method, the average worker productivity became 54.89/mandays. Based on the results of the study, it can be seen that the Critical Chain Project Management method is more effective and efficient than the previous method. So that the results of this study can be used by the company as a reference in planning the next repair project schedule.
Analisis Beban Kerja Fisik Menggunakan Metode Cardiovaskular Load dan Konsumsi Energi pada Karyawan Pemadam Kebakaran di PT X Zaini, Mohammad; Dira Ernawati
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The high physical workload of firefighters has the potential to cause fatigue and reduce performance, compromising safety and productivity. Given the importance of accurate measurement of physical workload, the aim of this study was to analyse physical workload using the Cardiovascular Load (CVL) method and energy expenditure to assess the level of physical intensity exerted by the body during work activities among firefighters using direct observation and pulse measurement during the working day, and estimation of energy expenditure based on recorded physical activity. The research results show that the physical workload of the employees is rather low, with an average CVL of 22.3%, indicating that there is no classification of fatigue. Energy consumption also has an average energy consumption value of 1.51, which shows that their energy consumption is in the light category. On the basis of the results of this analysis, PT also carries out regular health monitoring of physical conditions with the aim of keeping employees in optimal condition. It is hoped that this research will provide a basis for companies to develop policies to manage the physical workload of firefighters.
Analisis Optimalisasi Sistem Pendistribusian Air Bersih PDAM Tirta Jaya Kabupaten Pamekasan (Sumber Trasak) Raihana Azahra Rusadi Putri; Dira Ernawati
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study aims to analyse the optimisation of the clean water distribution system by PDAM Tirta Jaya in Pamekasan Regency (Sumber Trasak) by examining the effects of water pressure, distribution service, water quality and water quantity on customer satisfaction. The results show that these four variables contribute only 7.6% to customer satisfaction, while 92.4% is influenced by other factors. The correlations between these variables and customer satisfaction are weak, with Pearson correlation values below 0.5. Furthermore, regression analysis shows that the relationships are insignificant, except for water quality, which has a significant but weak correlation. Based on these results, optimising the clean water distribution system requires a more comprehensive approach that takes into account other factors, such as improving customer service and improving the water distribution infrastructure.
Operational Risk Analysis of kWh Addition Services Using the RCA (Root Cause Analysis) Method at PT XYZ Annisa Maudi Syafitri; Dira Ernawati
International Journal of Mechanical, Industrial and Control Systems Engineering Vol. 1 No. 3 (2024): September :IJMICSE: International Journal of Mechanical, Industrial and Control
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/ijmicse.v1i4.131

Abstract

Demand for additional electric power increases as electricity demand increases, but the process is often hampered by obstacles in the operational workflow. The main objective of this research is to analyze operational risks in kWh addition services using the Root Cause Analysis (RCA) method using the 5 Why technique and fishbone diagram. The RCA method equipped with a fishbone diagram will produce a mapping of the causes of operational risk obstacles in the PT XYZ kWh addition service in a structured manner. In the process, the author identifies and analyzes the various risks faced, and proposes improvements aimed at improving service quality. Based on the results of the research analysis, there are two operational risks related to kWh addition, namely: the migration process of postpaid kWh meters to prepaid meters and the use of electricity by customers who exceed the contracted power. The conclusion shows that most of the operational risks come from customer behavior. Proposed improvements include increasing the frequency of inspections, proactive planning for power additions, and transparency of information to customers. The results of this report are expected to make a positive contribution to operational risk management at PT XYZ and improve customer satisfaction.
Penerapan Algoritma C4.5 untuk Klasifikasi Customer Churn pada Perusahaan Perbankan Mohammad Aulia Riftiarraafi; Dira Ernawati
Sammajiva: Jurnal Penelitian Bisnis dan Manajemen Vol. 2 No. 1 (2024): Maret : SAMMAJIVA : Jurnal Penelitian Bisnis dan Manajemen
Publisher : Institut Nalanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47861/sammajiva.v2i1.808

Abstract

In the fast-paced digital era, companies must continue to innovate to survive. Especially in banks, retaining customers is the main strategy to be able to project business continuity. The topic of customer retention pays more attention to studying customer patterns that have a tendency to survive. This is very difficult to do because the observed data is generally very complex and amounts to a very large amount. Therefore, computers are a technology that is very suitable to solve these problems. Decision tree is a method that is currently being widely used for research. Moreover, with various versions that continue to be developed such as the C4.5 algorithm, it is a guarantee that this algorithm is still relevant for use in today's industry. Even so, there is still no customer retention prediction research with banking industry case studies. The results of this research test, prove that using the C4.5 algorithm, successfully predict customer churn with an accuracy of 99.77%.
Implementasi Digital Marketing pada UMKM Donat Kekinian (Rasadonat) dalam Upaya Membangun Strategi Pemasaran Mohammad Ridho Permana; Dira Ernawati
Jurnal Pengabdian Dian Mandala Vol. 1 No. 2 (2023): December : Jurnal Pengabdian Dian Mandala
Publisher : STP Dian Mandala Gunungsitoli Nias Keuskupan Sibolga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62200/jpdm.v1i2.80

Abstract

Digital Marketing is a marketing or promotional technique for a product through digital media or the internet which aims to attract consumers or potential consumers quickly and massively. In an era that is all digital and is increasingly developing over time, implementing digital marketing will be a very effective marketing strategy for community businesses or MSMEs. Therefore, RasaDonat MSMEs must implement and apply digital marketing as one of their product marketing strategies so that they do not only rely on conventional marketing. This research was conducted with the aim of finding out the implementation of digital marketing at RasaDonat MSMEs as a marketing strategy in an effort to face intense business competition as a result of the increasingly massive development of the digital era. This research was conducted using qualitative research methods, namely data collection methods using observation and literature study methods. The results of this research are the implementation of digital marketing at RasaDonat MSMEs which consists of creating brand guidelines, creating Google My Business, creating social media for product promotion and marketing, creating a website to make product marketing easier, creating commercial articles that are SEO friendly, creating marketing campaigns, as well as creating paid marketing for product promotion and marketing.
Analysis Of Plastic Pellets Production Process To Reduce Waste Using Lean Six Sigma Method And FMEA Muhammad Hafiz Aziz; Dira Ernawati
Jurnal Sistem Cerdas Vol. 8 No. 1 (2025)
Publisher : APIC

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37396/jsc.v8i1.499

Abstract

The rapid development of the industry has increased plastic production to meet market demand, which has led to a rise in plastic waste volume. One way to reduce plastic waste is by processing it into plastic pellets. CV. XYZ is a company that produces plastic pellets from PP, PS, and PE waste in Gresik, East Java. In its production process, the company faces issues such as high lead times of 990 minutes and non-standard product quality, including defects like clumping, cutting failures, and broken plastic pellets. This study aims to reduce waste and minimize lead time by applying the lean six sigma method with a DMAIC and FMEA approach. Three dominant types of waste were identified: storage, defects, and transportation. The implementation of improvement proposals successfully reduced lead time from 990 minutes to 780 minutes. The average sigma level was recorded at 3.14 with a DPMO of 50009, which falls into the good category for the average industry in Indonesia. Recommendations include demand forecasting, operator training, supplier selection, improving raw material quality, material handling, and utilizing conveyors in certain areas while minimizing non-value-added activities. Through the design of process activity mapping and big picture mapping, the efficiency of plastic pellet production can increase from 50.51% to 64.10%
Pengukuran Kinerja Supply Chain Menggunakan Metode Green Score di PT. XYZ Dodo Zulfikar; Dira Ernawati
JUMINTEN Vol. 1 No. 1 (2020): Juminten: Jurnal Manajemen Industri dan Teknologi
Publisher : Teknik Industri - UPN "Veteran" Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/juminten.v1i1.3

Abstract

Penelitian ini bertujuan untuk mengetahui berapa nilai kinerja supply chain di PT. XYZ apabila diukur dengan menggunakan model green scor. PT. XYZ adalah perusahaan dengan memproduksi bahan aktif kimia untuk pertanian dan perkebunan. Permasalahan yang dialami perusahaan adalah perusahaan mulai mengembangkan tidak hanya produk yang ramah lingkungan tetapi juga management serta supply chain yang ramah lingkungan yang akan dimulai dari produk Guela. Setelah dilakukan verifikasi dari 18 indikator yang diajukan, melalui sesi wawancara diperoleh 14 indikator yang terverifikasi dan bisa dijadikan KPI. Pembobotan pada tiap KPI dilakukan dengan menggunakan metode AHP. Selanjutnya dilakukan pengukuran kinerja atau scoring dengan menggunakan metode Green Supply Chain Operation Reference (GSCOR) dan mengevaluasi dengan menggunakan metode traffic light system (TLS). Berdasarkan tabel 4.67 dapat diketahui bahwa dari 14 KPI, 3 KPI yang masuk dalam kategori warna kuning, 1 KPI yang masuk kategori warna merah dan 10 KPI yang masuk kategori warna hijau. Nilai total pengukuran kinerja green supply chain pada PT. XYZ didapatkan sebesar 72,64 (Good). Dari angka tersebut dapat diketahui bahwa kinerja green supply chain pada PT. XYZ berada pada warna hijau yang artinya kinerja supply chain sudah baik tetapi perlu dilakukan tindakan perbaikan untuk meningkatkan performansi green supply chain PT. XYZ.
Analisis Performance Mesin Residual Oil Main Burner pada Unit PLTU 3/4 dengan Metode Reliability Availability Maintainability (RAM) di PT Pembangkit Jawa Bali Unit Pembangkit Gresik Luky Noviansyah; Erlina Purnamawati; Dira Ernawati
JUMINTEN Vol. 1 No. 2 (2020): Juminten: Jurnal Manajemen Industri dan Teknologi
Publisher : Teknik Industri - UPN "Veteran" Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/juminten.v1i2.12

Abstract

PT. XYZ merupakan anak perusahaan PLN BUMN produsen listrik yang salah satu penyuplai kebutuhan listrik di Jawa Timur. Salah satu unit pembangkit listrik Gresik yaitu PLTU unit 3 dan 4 yang mempunyai mesin kritis residual oil main burner pada sistem operasi listrik. Residual Oil Main Burner merupakan tempat pembakaran minyak yang dioperasikan ketika dibutuhkan dua pembakaran. Pada mesin residual oil main burner tidak terdapat penjadwalan pemeliharaan yang tepat. Maka dari itu perlunya kebijakan maintenance pada mesin residual oil main burner yang tepat. Metode yang digunakan Reliability Availability Maintainability (RAM) yang bertujuan untuk memprediksi kinerja keandalan, ketersediaan, kemampuan perawatan dari mesin sehingga memiliki performance mesin yang baik. Hasil penelitian menunjukan performance mesin dengan menggunakan metode ReliabilityAvailability Maintainability (RAM), diperoleh nilai reliability sebesar 80,36% pada R(t) = 240 jam dan untuk mencapai nilai maintainability 81% dibutuhkan waktu perbaikan selama lima jam dengan inherent availability sebesar 99,31% dan operational availability sebesar 95,23%.
Pengurangan Bullwhip Effect Menggunakan Metode Vendor Managed Inventory (VMI) pada Supply Chain di PT. Alu Aksara Pratama Mohammad Alfin Al Farih; Dira Ernawati
JUMINTEN Vol. 1 No. 2 (2020): Juminten: Jurnal Manajemen Industri dan Teknologi
Publisher : Teknik Industri - UPN "Veteran" Jatim

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/juminten.v1i2.89

Abstract

Prediksi jumlah produksi dapat dilakukan dengan melakukan peramalan permintaan serta penggunaan metode yang tepat. Rantai pasok yang diteliti pada PT. XYZ terdiri atas Manufaktur (Vendor) dan Kantor Penjualan. Awalnya peramalan dilakukan pada masing – masing level rantai pasok dengan metode peramalan yang berbeda – beda. Maka, diperlukan penyeragaman metode peramalan pada masing – masing pelaku rantai pasok. Berdasarkan pengujian metode peramalan yang dilakukan yakni metode Winter’s Method. Model yang digunakan untuk menghubungkan antara peramalan dan pelaksanaan dengan menggunakan pendekatan Vendor Managed Inventory (VMI). Perencanaan persediaan pada rantai pasok tidak dapat dilakukan secara sendiri – sendiri dan harus dipikirkan sebagai suatu sistem yang terkoordinasi. Pengendalian persediaan dilakukan dengan menggunakan perhitungan lot optimal yakni Economic Order Quantity (EOQ). Berdasarkan peramalan permintaan dan penentuan lot optimal, maka dapat dilakukan perhitungan nilai Bullwhip effect yang terjadi setelah penggunaan VMI pada rantai pasok mengalami perubahan yakni 1,359 menjadi 0,514 pada tingkat Manufaktur, sedangkan pada masing-masing tingkat Kantor Penjualan mengalami perubahan yakni 1,458 menjadi 0,501 pada kantor penjualan Banjarmasin, 1,657 menjadi 0,494 pada kantor penjualan Samarinda, 1,497 menjadi 0,888 pada kantor penjualan Makasar, 1,244 menjadi 0,493 pada kantor penjualan Kediri, 1,304 menjadi 0,508 pada kantor penjualan Jember, 1,212 menjadi 0,499 pada kantor penjualan Jogja, 1,198 menjadi 0,499 pada kantor penjualan Surabaya, 1,267 menjadi 0,501 pada kantor penjualan Semarang, 1,327 menjadi 0,508 pada kantor penjualan Bali.
Co-Authors Afrul Mufdi T Andita Defriyanti Andita Defriyanti Andrew P. Himawan Andy Dwi Feriansyah Annisa Maudi Syafitri Aprilia Kurnia Ayu Agustina Suryani Bagues Prayogik Bagues Prayogik Bossanova Deky Tri Himawan Dodo Zulfikar Erlina Purnamawati Faiz Travessa Juhaim Febridan Dzulkifli Hafid Syaifullah Iqbaal Ahmad Izzudin Irfany A. Muzady Irfany Ardian Muzady Ivan Alvino Ryansyah Putra Pratama Kanjeng M. S. Putri Luky Noviansyah M Satria Adiyatma Nugraha Mahardika Brave Revaldiwansyah Mohammad Alfin Al Farih Mohammad Aulia Riftiarraafi Mohammad Febrian Ishaq Mohammad Febrian Ishaq Mohammad Ridho Permana Mohammad Trisyadi Waluya Jati Mohammad Zaini, Mohammad Muhammad Hafiz Aziz Muhammad Ilham Sugeng Hamdani Nanang Teguh Wijaya Nanda Setyadi Ni Ketut Sari NUR RAHMAWATI Prastyo Utomo Radifan Dimasyqi Rafi Fadlurrahman Firjatullah Raihana Azahra Rusadi Putri Riska Tia Wulandari Rizki Novadila Rizki Novadila Rusindiyanto Saigotun Haniyah Salsa Billa Kharisma Santi Wulandari Sari, Zulia Wulan Tarissa Berliana Kartika Tranggono Wirawan Wijaksono Walddeon Yahya Rizky Setiyono