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All Journal SITEKIN: Jurnal Sains, Teknologi dan Industri INTECOMS: Journal of Information Technology and Computer Science JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Teknik Industri Terintegrasi (JUTIN) Advance Sustainable Science, Engineering and Technology (ASSET) Journal Industrial Engineering and Management (JUST-ME) JGEN : Jurnal Pengabdian Kepada Masyarakat Advance Sustainable Science, Engineering and Technology (ASSET)
Dahda, Said Salim
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Other

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Optimasi Ukuran Lot Persediaan dalam Model Integrasi Single Vendor dan Single Buyer dengan Mempertimbangkan Kekurangan Buyer Rahma, Alifia Shafira; Dahda, Said Salim
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 9, No 3 (2024): September 2024
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v9i3.2715

Abstract

The supply chain is the main factor influencing the production process in achieving goals. This research develops a model to determine the optimal production lot size in the supply chain system between vendors and buyers by considering the inventory shortage at the buyer. Minimizing the combined inventory cost is the goal of optimizing the production lot size by developing an integration model to determine the optimal lot size. The proposed model uses a periodic delivery method from the vendor to the buyer and allows for inventory shortages at the buyer. An iterative algorithm is applied to find the optimal lot size and minimum integrated inventory cost. The results showed that the initial model with n=1 resulted in a total cost of 2252 and an optimal production size (Q*) of 457. The proposed model reduces the total cost to 1605 with an optimal production size (Q*) of 737. Sensitivity analysis showed that an increase in the frequency of deliveries to vendors and vendor set-up costs contributed to a rise in total cost, while an increase in vendor storage costs led to a decrease in production lot size. This research can improve the efficiency of production planning and inventory management in the supply chain.Keywords - Inventory, Shortages, Single Buyer, Single Vendor.
Penguatan Citra Merek : Meningkatkan Dampak Merek Usaha (Studi Kasus: UMKM Sidayu) Negoro, Yanuar Pandu; Dahda, Said Salim; Muslimah, Tsaqofi Bintang; Yadani, Dhidu Usrin
JGEN : Jurnal Pengabdian Kepada Masyarakat Vol. 2 No. 1 (2024): JGEN : Jurnal Pengabdian Kepada Masyarakat, Juni 2024
Publisher : Lumbung Pare Cendekia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60126/jgen.v2i1.329

Abstract

Usaha Mikro, Kecil dan Menengah (UMKM) adalah salah satu sektor penting dalam perekonomian Indonesia, oleh sebab itu perlu dilakukan pengembangan secara serius dan mendalam terkait bagaimana UMKM dapat berkembang dan berkelanjutan guna memberikan manfaat yang sangat positif bagi perekonomian dan kesejahteraan pelaku UMKM. Pembekalan ilmu pengetahuan dan ketrampilan untuk para pelaku usaha UMKM perlu dilakukan secara berkala dan berkelanjutan guna menambah wawasan terkait bagaimana perkembangan zaman, kondisi persaingan dan perubahan perilaku konsumen. Pada pengabdian ini akan dijelaskan mengenai pentingnya memiliki citra merek yang kuat. Proses tersebut meliputi mengidentifikasi, melakukan analisis, melakukan evaluasi, mengendalikan dan meningkatkan citra merek. Pelatihan ini dimaksudkan agar dapat membantu berkembangnya UMKM serta dapat memberikan kemudahan bagi pengelola UMKM dalam menjalankan usahanya untuk mengelola usaha secara baik. Selain itu dapat menjadikan implementasi bagi pelaku UMKM untuk meperhatikan merek usaha meraka agar dapat ditingkatkan dan lebih dikenal oleh masyarakat yang lebih luas. Dari peningkatan kekuatan merek yang lebih kuat dan baik, maka permintaan usaha semakin baik, dan berdampak pada peningkatan pendapatan.
Analisis Produktivitas Divisi Produksi Menggunakan Metode Objective Matrix (OMAZ) Dan Analytical Hierarchy Proses (AHP) Iqbal, Nurul; Dahda, Said Salim
INTECOMS: Journal of Information Technology and Computer Science Vol 7 No 4 (2024): INTECOMS: Journal of Information Technology and Computer Science
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/intecoms.v7i4.10630

Abstract

Produktivitas merupakan menganalisis dan mengevaluasi output yang didapat berdasarkan tingkat unjuk kerja selama periode waktu tertentu adalah komponen penting untuk menjaga kelangsungan hidup suatu perusahaan. Pengukuran produktivitas diperlukan untuk mengetahui produktivitas perusahaan saat ini. OMAX (Objective Matrix Method) adalah salah satu metode untuk menganalisis produktivitas perusahaan, dan langkah-langkah, Proses Analitik Hierarki untuk penentuan bobot, penentuan tingkat tujuan matriks, kalkulasi untuk index produktivitas, dan Evaluasi dengan traffic light system untuk membagi tingkat pencapaian indikator dan memperbaiki tingkat yang tidak mencapai. Menurut evaluasi traffic light system, rasio jam lembur sebenarnya menyebabkan penurunan produktivitas. Oleh karena itu, peningkatan produktivitas diperlukanmengevaluasi pada penjadwalan jam lembur aktual agar produktivitas tetap sesuai target yang sudah di tentukan oleh Perusahaan. Kata Kunci: Analisis Produktivitas, Analytical Hierarchy Proces, Objective Matrix, OMAX, AHP
Optimalisasi Produksi Frozen Whole Round Block Dengan Menggunakan Metode Economic Production Quantity (EPQ) : (Studi Kasus : PT HATNI, Lamongan) Negoro, Yanuar Pandu; Dahda, Said Salim; Hidayat, Hidayat; Tajri, Tajri
Journal Industrial Engineering and Management (JUST-ME) Vol. 6 No. 01 (2025): Journal Industrial Engineering and Management (JUST-ME)
Publisher : Program Studi Teknik Industri Fakultas Teknik Universitas Islam Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47398/just-me.v6i01.121

Abstract

PT HATNI menghadapi permasalahan tingkat inventori yang tinggi pada produk Frozen Whole Round Block (FWRB) akibat produksi yang tidak optimal. Tujuan penelitian ini adalah mengoptimalkan produksi FWRB dengan menerapkan metode Economic Production Quantity (EPQ) untuk mengurangi inventori dan meningkatkan efisiensi. Metodologi penelitian meliputi pengumpulan data primer dan sekunder melalui wawancara, observasi, serta analisis data historis produksi, permintaan, dan persediaan tahun 2024. Perhitungan EPQ dilakukan dengan mempertimbangkan biaya set-up, tingkat produksi, permintaan, dan biaya penyimpanan. Feasibilitas kapasitas produksi dinilai untuk memastikan kelayakan penerapan EPQ. Hasil penelitian menunjukkan feasibilitas kapasitas produksi sebesar 0.56 (<1), mengindikasikan EPQ layak diterapkan. Nilai produksi optimal (EPQ) adalah 24,923.72 kg per siklus dengan siklus produksi 14.87 hari dan waktu produksi efektif 8.31 hari. Tingkat inventori maksimal turun menjadi 11,002.92 kg, dengan rata-rata inventori per bulan 5,501.46 kg, menurun 26.97% dari kondisi sebelumnya. Kesimpulannya penerapan EPQ berhasil mengoptimalkan produksi FWRB dan mengurangi inventori PT HATNI. Efisiensi ini memungkinkan perusahaan untuk meningkatkan arus keuangan dan mengurangi risiko overcrowding serta penurunan kualitas produk. Kata kunci: EPQ, Produksi, Frozen Whole Round Block, Optimasi, Lamongan
Designing Steel Warehouse Layouts: A Comparative Study of Dedicated Storage and Class-Based Storage Methods at PT. BSB Pratama, Maghrobi Muzzaky; Dahda, Said Salim
Advance Sustainable Science Engineering and Technology Vol. 6 No. 3 (2024): May - July
Publisher : Science and Technology Research Centre Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v6i3.737

Abstract

PT BSB is a company engaged in steel fabrication manufacturing. There are various kinds of projects carried out at the company, namely bridges, steel structures, buildings, towers, etc. and the irregular placement of steel in the warehouse results in problems in the steel storage warehouse at PT. BSB where the company does not have an arrangement regarding the layout of raw materials for steel retrieval has difficulty because the steel is stored randomly without paying attention to its type and is only placed in an empty place. Therefore, it is necessary to design a layout using the dedicated storage and class-based storage methods to improve the warehouse layout by designing a warehouse layout so that it can make it easier to find and minimize steel search time. Results of research carried out obtained that distance travelled using the dedicated storage method is amounting to 7790,85 metres with material handling time 15581,7 minutes, whereas with use class based storage method can be obtained distance 8382,05 metres with material handling time 16764,1 minutes. Concluded that design results Select the selected layout is with use possible dedicated storage method reduce distance travel and time at PT. BSB warehouse becomes more practice and efficient
Analysis of Improving the Quality of Fatty Acid Methyl Ester (FAME) Products Against Acid Value (AV) Levels Using the Six Sigma and Kaizen Methods Afifi, Mohammad Salva; Dahda, Said Salim
Advance Sustainable Science, Engineering and Technology Vol 6, No 2 (2024): February - April
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/asset.v6i2.18502

Abstract

. PT XYZ is a palm oil derivative processing company that produces biodiesel / FAME (Fatty Acid Methyl Ester) products. However, there are several obstacles that still occur during the company's production process which causes the acid value (AV) level of FAME products to not meet specifications and there are 3% defective products. Therefore, this study aims to determine the improvement plan by applying kaizen to the Six Sigma improvement stage and reducing outspec products in the FAME production process. The results of the research conducted using the six sigma method show that the company has a DPMO value of 71,459 and a sigma value of 2.96 which is in the average position of the industry in Indonesia based on the results of data processing. While recommendations for improvement by implementing kaizen include training machine operators, making standard operating procedures (SOPs) for machine inspections on each shift, reducing the amount of strearin added to AV raw materials before pre-treatment, maintenance and machine calibration.  This step are expected to overcome the main problems identified in the study.
Analisis Terjadinya Risiko Musculoskeletal Disorders Karyawan Bagian Finishing Menggunakan Metode Reba (Studi Kasus : UD Arryna Raya) Ainiyah, Yulia Nur; Dahda, Said Salim; Jufriyanto, Moh
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 19, No 2 (2022): Juni 2022
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v19i2.17912

Abstract

Perusahaan ini bergerak dalam bidang industri garment (retail hijab) yang mengikuti era modernisasi dengan melakukan sistem penjualan offline maupun online. Sehingga menimbulkan jumlah pemintaan hijab semakin tinggi dan perusahaan harus meningkatkan produktivitas karyawannya. Salah satu cara meningkatkan produktivitas karyawan yaitu dengan menganalisis postur kerja karyawan agar tidak mudah kelelahan saat melakukan pekerjaan. Karyawan yang mengalami nyeri pada sendi maupun merasa sering kelelahan mengakibatkan pengerjaan produk dengan lambat sehingga menyebabkan menurunya poduktivitas pekerja. Dengan adanya kuisoner nordic body map (NBM) membatu dalam proses analisis keluhan rasa sakit yang sering terjadi pada tubuh responden (karyawan bagian finishing). Dari hasil data yang telah diperoleh maka dilakukan penelitian menggunakan metode rapid entire body assesment (REBA) dengan harapan dapat dilakukannya identifikasi faktor risiko ergonomi sehingga dapat dilakukan penanganan dengan efektif dan efisien. Berdasarkan data yang diperoleh, karyawan pada proses finishing ini sangat memerlukan perubahan posisi postur tubuh ketika bekerja.
Analisis Postur Kerja Karyawan Produksi Sepatu Olahraga Menggunakan Metode Novel Ergonomic Postural Assessment pada Karyawan Ruang Produksi UD. XYZ Gresik Dharmaji, Rizky; Dahda, Said Salim
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 3 (2023): July 2023
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i2.15400

Abstract

This research is discussed about the analysis of work posture in small-medium industries that produce sports shoes. UD XYZ Gresik is one of the companies in the athletic shoe industry that receives requests for shoes every day. Working hours for 9 hours with a break time of 1 hour. Production targets are sometimes not achieved, causing employees to work overtime. Along with the targets that must be achieved every day, employees in the shoe production room have to sit for a long time during working hours. Long working hours have an impact on musculoskeletal disorders, especially back pain. Working posture (sitting position) and length of work are factors that affect physical ability which continues to decline. Thus resulting in absenteeism and economic losses caused by a decrease in work capacity and a decrease in employee productivity. Novel Ergonomic Postural Assessment as an ergonomics method used as a tool to analyze the risk of ergonomics and working posture in the upper body to reduce the risk of musculoskeletal injuries in the production process. The results showed that the value of the first working posture was 6 (work posture needs further research and action is needed in the near future). For the second working posture, the final NERPA score was 7 (work posture needs to be checked further and action taken as soon as possible). Both of these scores require improvement due to the risk of severe musculoskeletal disorders.
Analisa Identifikasi Bahaya Menggunakan Metode JSA dan HIRADC pada Pekerjaan Pembersihan Tangki (Studi Kasus : PT. Sagara Mutiara Teknik ) Nagara, M Arga Dita; Dahda, Said Salim
Jurnal Teknik Industri Terintegrasi (JUTIN) Vol. 6 No. 4 (2023): Oktober
Publisher : LPPM Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jutin.v6i4.22129

Abstract

Work accidents are one of the problems that are often encountered in the world of the construction industry. The main cause of work accidents is unsafe action. This happens because there is a lack of awareness about the magnitude of the risks that must be borne by all elements of the company. One of the high-risk jobs carried out by PT. Sagara Mutiara Teknik is tank cleaning work. In the hazard identification stage, tank cleaning work is carried out using the JSA method. Furthermore, risk assessment and control recommendations are carried out using the HIRADC method. There are several types of potential hazards found in tank cleaning work, namely falling from a height, sharp materials, slipping, dust exposure, falling materials, chemical exposure. Recommendations for improvement are made after knowing the potential hazards and implemented in the occupational safety and health management system to reduce the risk of work accidents that occur in tank cleaning work. 
Optimising the Quality of Postpaid Electricity Billing Information Services through the Integration of the SERVQUAL Mixed Methods Approach Khumaidi, Moh Naufal; Dahda, Said Salim
SITEKIN: Jurnal Sains, Teknologi dan Industri Vol 23, No 1 (2025): December 2025
Publisher : Fakultas Sains dan Teknologi Universitas Islam Negeri Sultan Syarif Kasim Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24014/sitekin.v23i1.38469

Abstract

The quality of postpaid electricity billing information services is a critical factor in maintaining customer satisfaction and the operational sustainability of electricity service providers. However, the complexity of identifying service quality gaps requires an integrative and comprehensive approach. The integration of a mixed methods approach with the SERVQUAL model is considered to have the potential to optimise service quality through holistic problem identification and data-driven solutions. This study used a mixed methods design with an explanatory sequential design approach. The quantitative phase was conducted through a survey using a SERVQUAL questionnaire that measured five dimensions of service quality (tangibles, reliability, responsiveness, assurance, empathy) among 400 postpaid electricity customer respondents. Quantitative data were analysed using regression tests and gap analysis to identify discrepancies between customer expectations and perceptions. The qualitative phase was conducted through in-depth interviews with 15 customers and focus group discussions (FGD) with service staff to explore the causes of the gaps and potential solutions. Data integration was carried out through joint display analysis and triangulation. Quantitative analysis revealed negative gaps in all SERVQUAL dimensions, with the highest gaps in reliability (-1.85) and responsiveness (-1.72). The lowest gap was in tangibles (-0.95). Qualitative analysis revealed the root causes, including inaccurate billing information, slow response to complaints, and lack of empathy in communication. Data integration identified three main wastes: waiting time in delivering information, reprocessing billing data, and overburdening the information system. Improvement priorities focused on developing a real-time data integration system and training service staff. The integration of SERVQUAL mixed methods is effective in identifying service quality gaps and root causes that need to be addressed. Optimising the quality of postpaid electricity billing information services requires both a technical approach (improving the information system) and a human approach (staff training). Implementing solutions based on the findings of this study can improve customer satisfaction and operational efficiency. Further studies are recommended to test the effectiveness of the solutions in a broader context.
Co-Authors Afifi, Mohammad Salva Ainiyah, Yulia Nur Dharmaji, Rizky Hidayat Hidayat Iqbal, Nurul Khumaidi, Moh Naufal Moh. Jufriyanto Muslimah, Tsaqofi Bintang Nagara, M Arga Dita Pratama, Maghrobi Muzzaky Putra Adinata, Luthfi Rahma, Alifia Shafira Tajri, Tajri Yadani, Dhidu Usrin Yanuar Pandu Negoro