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All Journal Journal of Engineering and Management in Industrial System Journal of Engineering and Technological Sciences JOIV : International Journal on Informatics Visualization Sewagati
Agus Imam Sonhaji, Agus Imam
Badan Perencanaan Pembangunan Kota Surabaya,Jalan Pacar No. 8, Surabaya 60272,
Arts Humanities Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Public Health Social Sciences Other

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Thermal Energy Storage Optimization in Shopping Center Buildings Biyanto, Totok R.; Alhikami, Akhmad F.; Nugroho, Gunawan; Hantoro, Ridho; Bayuaji, Ridho; Firmanto, Hudiyo; Waluyo, Joko; Sonhaji, Agus Imam
Journal of Engineering and Technological Sciences Vol 47, No 5 (2015)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (419.021 KB) | DOI: 10.5614/j.eng.technol.sci.2015.47.5.7

Abstract

In this research, cooling system optimization using thermal energy storage (TES) in shopping center buildings was investigated. Cooling systems in commercial buildings account for up to 50% of their total energy consumption. This incurs high electricity costs related to the tariffs determined by the Indonesian government with the price during peak hours up to twice higher than during off-peak hours. Considering the problem, shifting the use of electrical load away from peak hours is desirable. This may be achieved by using a cooling system with TES. In a TES system, a chiller produces cold water to provide the required cooling load and saves it to a storage tank. Heat loss in the storage tank has to be considered because greater heat loss requires additional chiller capacity and investment costs. Optimization of the cooling system was done by minimizing the combination of chiller capacity, cooling load and heat loss using simplex linear programming. The results showed that up to 20% electricity cost savings can be achieved for a standalone shopping center building.
Implementation of Big Data Information System Using Open-Source Metabase for Civil Registration and Vital Statistics Data Visualization in Surabaya Budiarti, Rizqi Putri Nourma; Sukaridhoto, Sritrusta; Zuhdi, Ubaidillah; Rasyid, Alfandino; Sonhaji, Agus Imam
JOIV : International Journal on Informatics Visualization Vol 7, No 4 (2023)
Publisher : Society of Visual Informatics

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62527/joiv.7.4.1722

Abstract

Civil registration involves the mandatory and continuous documentation of important life events of a country's population under local legal requirements. In many countries, these documents are required to access government services such as education, healthcare, social services, formal employment, insurance benefits, and inheritance rights. Indonesia should prioritize building a comprehensive Civil Registration and Vital Statistics (CRVS) using a big data information system to ensure every individual has a legal identity, can access government services, and collect accurate and reliable statistics on vital events through geospatial maps. Surabaya, a city in Indonesia, still needs a comprehensive Civil Registration and Vital Statistics (CRVS) system. We produce many informative visualizations from the query and modeling processes in Metabase. Based on the PIECES framework, this application's importance level is 4.56 or 91.25%, meaning the application is important, and the satisfaction level is 4.29 or 85.76%, meaning the application is satisfied for the respondents. This research provides a brief overview of how Metabase works and how it can be used to generate visualizations of job-type data. It demonstrates the ease with which visualizations can be changed and customized. It had a good affordability point, making its implementation easier and more beneficial. It also emphasizes the importance of having a powerful tool like Metabase for data analysis and decision-making, especially for the dispendukcapil as a civil registration agency.
ENHANCING PUBLIC SERVICE EFFICIENCY: A CASE STUDY-BASED PROCESS CAPABILITY ASSESSMENT IN SURABAYA Anityasari, Maria; Sonhaji, Agus Imam; Akbar, Reza Aulia; Kusumawardani, Rindi; Indrawijaya, Rivaldo
JEMIS (Journal of Engineering & Management in Industrial System) Vol. 13 No. 2 (2025): In Process
Publisher : Industrial Engineering Department, Faculty of Engineering, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/

Abstract

The application of lean six sigma in the manufacturing industry, particularly with regard to productivity enhancement, waste reduction, and production process efficiency, has gained greater recognition. Furthermore, the fundamental ideas of this field are highly applicable and could be used in the service industry, including public services offered by governmental organizations. In order to meet community needs, public services like those provided by Surabaya City's Regional Apparatus Organization (RAO) are crucial. The community, as users of public services, has no other options, so the quality of service provided by government agencies is the only hope, in contrast to the optional and competitive private sector services. These public services rely on the abilities and dependability of their personnel in addition to effective systems. In Indonesia and many other developing countries, these issues still exist. This study employed process capability analysis to evaluate 279 licensing and non-licensing services provided by 17 Regional Apparatus Organizations (RAOs) in the City of Surabaya over the previous 9 months. Sixty-three out of 279 services (22.6%) were below the level of sigma and that is smaller than 3σ, meaning there was inconsistency process performance capability against to average threshold value in Indonesia. This indicates that there is further room to enhance the operational systems as well as develop HR professional skills. It is hoped that this approach will tackle the root cause of the problem, and help drive creation of more reliable, effective and efficient services delivered fairly to all stakeholders.
Menuju Layanan Administrasi yang Efektif dan Efisien: Pendampingan Implementasi Lean Six Sigma dalam Pelayanan Publik di Kota Surabaya Anityasari, Maria; Akbar, Reza Aulia; Nickita, Komang; Indrawijaya, Rivaldo; Sonhaji, Agus Imam; Wibisono, Keiza Ayu; Maharani, Zarlita; Thufail, Al May Nabith; Anastasya, Febiana; Salsabilla, Nasywa; Afzalurrahman, Fahrizal; Pratama, Affan Hadi; Suryaningtyas, Alifia; Irani, Cindy Fitria; Da Murra, Fadhel; Nihara, Akmal Zuhdi; Kusumawardani, Rindi
Sewagati Vol 9 No 5 (2025)
Publisher : Pusat Publikasi ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j26139960.v9i5.8314

Abstract

Keilmuan Teknik Sistem dan Industri selama ini lebih banyak dikaitkan dengansektor manufaktur. Namun sebenarnya disiplin ini juga sangat relevan untuk diterapkandi sektor layanan publik oleh instansi pemerintahan. Penerapan konsep LeanSix Sigma (LSS) terbukti mampu menjawab tantangan efisiensi, efektivitas, danpeningkatan kualitas layanan. Metode ini tidak hanya berfokus pada pengurangandefect atau kesalahan dalam proses layanan, tetapi juga mengutamakan pencarianprosedur terbaik untuk pemantauan dan perbaikan berkelanjutan. Maka dariitu, program pengabdian masyarakat ini dirancang untuk mendampingi OrganisasiPerangkat Daerah (OPD) penyelenggara layanan perizinan dan non-perizinan dilingkungan Pemerintah Kota (Pemkot) Surabaya dalam mengimplementasikan konsepLSS. Prinsipnya adalah pengelolaan data dari total waktu penyelesaian terhadaptarget yang telah ditetapkan untuk dapat mengukur performansi layanan dari setiapOPD melalui parameter process capability dan sigma level. Hasil dari pendampinganini menunjukkan bahwa meskipun para OPD telah memenuhi target waktu layanan,namun sebaran waktu layanan yang tercatat masih terlalu tinggi sehingga akhirnyaberdampak pada tingkat kepuasan masyarakat yang bervariatif. Hasil pengolahandata selanjutnya dianalisis berdasarkan 10 waste untuk menemukan penyebab waktulayanan belum konsisten. Hasil analisis ditindaklanjuti dengan perubahan prosedurkerja dan proses bisnis sebagai bentuk continuous improvement.
Co-Authors Afzalurrahman, Fahrizal Akbar, Reza Aulia Akhmad Faruq Alhikami Anastasya, Febiana Budiarti, Rizqi Putri Nourma Da Murra, Fadhel Gunawan Nugroho Hudiyo Firmanto, Hudiyo Indrawijaya, Rivaldo Irani, Cindy Fitria Maharani, Zarlita Maria Anityasari Nickita, Komang Nihara, Akmal Zuhdi Pratama, Affan Hadi Rasyid, Alfandino Ridho Bayuaji Ridho Hantoro Rindi Kusumawardani, Rindi Salsabilla, Nasywa SATRIYAS ILYAS Suryaningtyas, Alifia Thufail, Al May Nabith Totok R. Biyanto Ubaidillah Zuhdi Wibisono, Keiza Ayu