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Nadya Mara Adelina
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Departmen of Food Technology, Faculty of Science and Technology, University of Al Azhar Indonesia Fakultas Sains dan Teknologi Universitas Al Azhar Indonesia, Lt. 5. Kompleks Masjid Agung Al Azhar, Jalan Sisingamangaraja, Kebayoran Baru, Jakarta Selatan 12110
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Exhibition and Seminar on Science and Creative Technology – Al Azhar Proceeding
Published by Universitas Al Azhar Indonesia
ISSN : -     EISSN : 30326958     DOI : http://dx.doi.org/10.36722/exc.v1i1
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Industrial & Manufacturing Engineering
Focus and Scopes: Food Technology: Halal and Thayyib Food, Food Innovation Nutrition: Community Nutrition, Food Security Biology: Bioconservation, Biotechnology, Informatics Engineering Data Science: Artificial Intelligence Electrical Engineering: Communiication System and Networks, Mechatronics, Instrumentation, and Power System Industrial Engineering: Ergonomics, Supply Chain Management, Managemnet Engineering, Product Development
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 5 Documents
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Search results for , issue "Vol 3, No 1 (2025)" : 5 Documents clear
Model Program Linier Penjualan Produk Eskrim Cokelat dan Eskrim Chocomint Universitas Al-Azhar Indonesia Nurjaman, Chiko Alviaro; Nurhasanah, Nunung
EXSACT-A Vol 3, No 1 (2025)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v3i1.3819

Abstract

Optimalisasi produksi merupakan faktor penting dalam meningkatkan efisiensi dankeuntungan suatu usaha, terutama di sektor kuliner. Penelitian ini bertujuan untuk menerapkan metodeprogram linier dalam menentukan jumlah produksi optimal es krim cokelat dan es krim chocomint yangdijual di lingkungan Universitas Al-Azhar Indonesia. Dengan mempertimbangkan keterbatasan sumberdaya seperti susu, gula, bubuk cokelat, daun mint, chocochips, krim, dan dark chocolate, penelitian inimembangun model matematis yang terdiri dari variabel keputusan, fungsi kendala, dan fungsi tujuan.Model program linier yang diformulasikan dalam penelitian ini bertujuan untuk memaksimalkankeuntungan pedagang dengan mempertimbangkan batasan ketersediaan bahan baku. Penyelesaianmodel dilakukan menggunakan metode grafik dan metode Simplex untuk mencari kombinasi produksiyang paling menguntungkan. Hasil penelitian menunjukkan bahwa dengan menggunakan pendekatanprogram linier, pedagang dapat menentukan strategi produksi yang lebih optimal. Optimasi inimemungkinkan penggunaan bahan baku yang lebih efisien, mengurangi limbah produksi, sertameningkatkan keuntungan dibandingkan strategi produksi tanpa perhitungan matematis. Selainmemberikan solusi bagi pedagang dalam menentukan keputusan produksi yang lebih efektif, penelitianini juga berkontribusi dalam bidang akademik, khususnya dalam penerapan riset operasi untuk usahakecil dan menengah. Studi ini menunjukkan bahwa pemodelan program linier dapat menjadi alat yangberguna dalam membantu pengambilan keputusan berbasis data. Penelitian lebih lanjut dapatdilakukan dengan mempertimbangkan variabel lain, seperti fluktuasi harga bahan baku dan permintaanpasar, guna meningkatkan keakuratan model optimasi yang dikembangkan
Penerapan Metode Grafik Untuk Menghitung Keuntungan Maksimum Toko Mebel XYZ Firdaus, Alan
EXSACT-A Vol 3, No 1 (2025)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v3i1.3858

Abstract

The furniture industry encompasses various activities, from raw material processing to the production of finished goods. XYZ Furniture Store faces challenges in determining the optimal production quantities of wooden tables and chairs to maximize profits while managing limited resources such as raw materials and production time. This study aims to analyze and find an optimal solution using the graphical method in Linear Programming (LP). The methodology includes problem identification, data collection on per-unit profit, raw material requirements, and production time per product. A mathematical model is developed with an objective function to maximize profit and constraints reflecting available resource limitations. The graphical method is applied by visualizing constraints in a two-dimensional graph to determine the feasible area and evaluating extreme points to identify the optimal solution. The findings indicate that the optimal production quantities are 16.8 units of tables and 6.6 units of chairs per day, yielding a maximum profit of Rp1,104,000. The graphical method proves to be an effective approach for solving optimization problems involving two decision variables—table and chair production—affected by raw material limitations of 30 kg per day and a maximum production time of 40 hours per day. The conclusion of this study provides strategic recommendations for XYZ Furniture Store to enhance production efficiency and profitability. These findings also highlight that Linear Programming is a valuable analytical tool for making production decisions in the furniture industry with constrained resources.
Gage R&R Repeatability and Reproducibility Analysis on Wafer Chocolatos Length Measurement Rasyid, Muhammad Naufaldi; Abrar, Hikmal; Aribowo, Budi
EXSACT-A Vol 3, No 1 (2025)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v3i1.5518

Abstract

This study aims to evaluate the reliability of a measurement system using the Gage Repeatability and Reproducibility (Gage R&R) method on Chocolatos wafer length measurements. The experiment involved three appraisers, each measuring five wafers with three repeated trials. The collected data were processed through several steps to determine repeatability (EV), reproducibility (AV), and overall measurement system capability (%R&R). The results showed that the %R&R value was 95%, indicating that the gage system is not satisfactory. Furthermore, the repeatability value was higher than the reproducibility value, which suggests that the main source of measurement variation comes from the measuring instrument. Therefore, the gage requires maintenance and possibly redesign. This research highlights the importance of proper calibration and system evaluation to ensure measurement accuracy and reliability.
Metagenomic Analysis of Soil Bacteria Community Planting Pattern Effect of Rubber-Ganyong Agroforestry System and Rubber Monoculture Arista, Cut Riska; Sasaerila, Hidayat Yorianta; Effendi, Yunus
EXSACT-A Vol 3, No 1 (2025)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v3i1.4434

Abstract

Plantation land with agroforestry is one alternative to reduce the adverse effects of reduced soil fertility quality and loss of microorganism biodiversity. The diversity and abundance of soil microbial communities leads to better nutrient availability in rubber-canna intercroppingg fields than in rubber monoculture lands. Intercroppingg planting patterns containing rhizosphere bacteria beneficial for fertility and availability nutrition and superior phytohormone promoters. Comparison of the presence of bacteria in intercroppingg and monoculture soil soils using metagenomic analysis of 16S rRNA gene sequencing with Bioinformatics method. Analysis of the diversity and abundance of microorganisms using an alpha-diversity matrix of Chao1 and Shannon_E index types. Phylum Proteobacteria were found, which is one of the rhizosphere bacteria whose abundance according to alpha-diversity analysis data reached 49% in intercroppingg and 27% in monoculture fields. Some bacteria of the phylum proteobacteria are: Azospirillum sp., B. zhanjiangense, Phenylobacterium Pseudolabrys sp.  it is reported to play a role in the cycle of improving the quality of soil fertility. In the rubber-canna intercroppingg system, the abundance and microbial communities available on the intercroppingg land are higher in abundance and have specific functions compared to monoculture systems. Therefore the abundance of rhizosphere bacteria produces a more maximal mechanism.
Proposed Improvements to Occupational Health and Safety (OHS) Using Failure Modes and Effects Analysis and Fault Tree Analysis at Ruang Klambi Garment Workshop Almas, Alifah; Sesarina, Mika; Naufal, Muhammad Bintang; Syauqi, Muhammad Daffa; Purwandari, Aprilia Tri
EXSACT-A Vol 3, No 1 (2025)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v3i1.4508

Abstract

The garment industry is a crucial sector in the production of clothing and textiles, which supports societal needs. However, its production processes, involving various types of machinery and work tools, pose significant health and safety risks to employees. These risks need to be well managed to ensure workplace safety and to prevent potential accidents that could harm both employees and the company. This study was conducted at Ruang Klambi, a small garment industry located in South Tangerang. The purpose of the study is to identify and analyze potential workplace accidents and provide recommendations for improvements to enhance occupational health and safety (OHS). In this research, two main methods were used for hazard identification: Failure Modes and Effects Analysis (FMEA) and Fault Tree Analysis (FTA). Through FMEA, 44 potential accidents were identified across 9 work activities in the clothing and textile production process. Subsequently, FTA was used to identify the root causes of these potential accidents. The analysis revealed 42 root causes, which were then simplified to 34 main root causes after the cutset process. Based on these root causes, recommendations were developed focusing on the prevention and control of potential workplace accidents. The implementation of these improvement recommendations is expected to significantly enhance the level of OHS at Ruang Klambi, creating a safer and more productive work environment for all employees.

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