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Optimizing centrifugal water pump design for enhanced water use efficiency in Batam Marina Plantations Asmarawati, Citra Indah; Wibowo, Sadiq Ardo; Gumilang, Reno Reza
Journal Industrial Servicess Vol 11, No 1 (2025): April 2025
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62870/jiss.v11i1.26485

Abstract

Water demand in the plantation area has been increasing by 6% per year due to population growth, making the existing main water pump insufficient. To address this, a new centrifugal pump was designed with a focus on efficiency and ease of assembly using the Design for Manufacture and Assembly (DFMA) method and the French design analysis method. This study aims to develop an optimal pump design with an estimated service life of over five years, ensuring a reliable and sustainable water supply for the plantation area. The DFMA analysis showed that the design efficiency index improved from 0.30% in the current design to 0.77% in the alternative design—an increase of 0.47%. The alternative design was chosen because it offers faster assembly, lower costs, and fewer components compared to the existing model. Beyond improving efficiency, the optimized centrifugal pump is expected to last more than five years. This durability is supported by using corrosion-resistant grade 316 stainless steel for key components, material strength tests through finite element analysis (FEA) simulations under maximum operating conditions, and fatigue testing on the impeller, which confirmed its ability to withstand repeated use.
Penilaian Analitik, Holistik dan Skala Persepsi pada Pelajaran Aljabar Susanti, Elva; Asmarawati, Citra Indah; Arista, Anggia; Wibowo, Sadiq Ardo; Sumantika, Arsyad
Lattice Journal : Journal of Mathematics Education and Applied Vol. 3 No. 1 (2023): Juni 2023
Publisher : Universitas Islam Negeri Sjech M. Djamil Djambek Bukittinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30983/lattice.v3i1.6299

Abstract

Education is very important for the progress of the country, education cannot be separated from an assessment. Assessment must be based on the existing rubric to be clear, structured, and transparent. One of the existing assessments is based on analytic, holistic, and perceptual scales. The purpose of this study was to establish an assessment rubric in the algebra course because the course was only seen from a quantitative assessment, but in this study, it was assessed based on attitude, and character and then made criteria based on independent assignments and structured assignments and the results would later be tested differently by using the sample t-test. test, namely the independent sample t-test, the results of the data are not normally distributed, it is better to use the Wilxoson test and sign t-test. The result is that there is no difference between independent tasks and structured tasks seen from the significant table and the t-test table. Pendidikan sangatlah penting bagi kemajuan negara, pendidikan tidaklah lepas dari suatu penilaian. Penilaian haruslah berdasarkan rubrik yang ada agar jelas, tertruktur dan transparan. Salah satu penilaian yang ada berdasarkan analitik, holistik dan skala persepsi. Tujuan penelitian ini, menetapkan rubrik penilaian dalam matakuliah aljabar karena matakuliah tersebut hanya dilihat dari penilaian kuantitatif saja, namun dalam penelitian ini dinilai berdasarkan sikap, karakternya juga kemudian membuat kriteria berdasarkan tugas mandiri maupun tugas terstruktur dan hasilnya nanti akan diuji beda dengan menggunakan uji sampel t test yaitu independent sample t test, hasilya data tidak terdistribusi normal sebaiknya menggunakan uji wilxoson dan sign t-test. Hasilnya tidak ada perbedaan antara tugas mandiri maupun tugas terstruktur dilihat dari tabel signifikan maupun tabel t test nya.
PENGUKURAN KINERJA KARYAWAN DENGAN MENGGUNAKAN METODE HUMAN RESOURCE SCORECARD DI PT GANDA NUSANTARA PERSADA Nurmansyah, Nurmansyah; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 5 No 1 (2021): Comasie
Publisher : LPPM Universitas Putera Batam

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

Abstract

The condition of a company is very dependent on the quality of its human resources. Increasing the company's competitiveness must begin with improviment the quality of existing human resources first. To improve the quality of human resources can be done by increasing work motivation, work discipline and skills training. Before improving the quality of the people, there must first be a performance measurement system to be able to see the existing performance conditions. Performance measurement research conducted at PT. Ganda Nusantara Persada was conducted by applying the Human Resource Scorecard research method. In the Human Resource Scorecard method, research is carried out by processing data that considers the financial perspectif, customer perspectif, internal business process perspectif and growth and learning perspectif. From the output from this research conducted at PT. Ganda Nusantara Persada shows that from the four perspectives, the company's condition is good. However, when viewed from the comparison of the Idel value and the Belief value, there are still significant differences in several indicators, it is necessary to evaluate the existing performance quality.
ANALISA PERAMALAN PRODUK PALET KAYU DI CV. BAROKAH UTAMA Josenda, Rade; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 5 No 7 (2021): Comasie
Publisher : LPPM Universitas Putera Batam

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Abstract

Forecasting is a method of predicting the future based on a systematic analysis of past and current facts for a certain period of time. To minimize the excess and shortage of production, as well as shortage of raw materials, forecasting is needed. There are a variety of forecasting methods available, each with varying degrees of accuracy and error. The lowest MAD, MSE, and MAPE error values produce the best forecasting results. The goal of this study is to find the best forecasting approach for CV. Barokah Utama. Moving Average, Exponential Smoothing, Holt Exponential Smoothing, Linear Regression, and Trend Projection are the methods used. Based on the MAD, MSE, and MAD values, the Moving Average method with a value of n = 3 was found to be the most suitable method with the lowest error value.
ANALISIS HEADLOSS PADA JARINGAN PERPIPAAN DISTRIBUSI AIR BERSIH DI PERKEBUNAN MARINA KOTA BATAM Gumilang, Reno Reza; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 8 No 1 (2023): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v8i1.6678

Abstract

The rapid population growth will be directly proportional to the need for clean water, so that sooner or later various problems will arise in fulfilling the need for clean water. Marina Plantation, which is located in the city of Batam, is an area where the majority of the population work as gardeners and breeders. The increase in population and the expansion of the plantation area have resulted in a decrease in the burden on the clean water network. In this study the method used is a quantitative method using the Darcy Weisbach calculation formula with the help of Excel software to simplify calculations. Based on the head loss calculation. The technical specifications of the existing pumps are designed only to pump water with a capacity of 4 m3/h with a head of 12 m. To ensure that the existing pumps are no longer able to meet the current water demand. it is necessary to design a pump with a capacity of 10,314 m3/h +30% with a head of 19 m, and further analysis is needed, for example calculating the required pump driving force and the NPSH available in the installation.
ANALISIS PEMILIHAN SUPPLIER BERAS DI TOKO SEMBAKO GABE Purba, Risdohar; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 9 No 3 (2023): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v9i3.7665

Abstract

In the face of increasingly rapid market developments, every company must be able to compete globally. This is a challenge for every company, to be able to compete in providing the best for its consumers. In order to produce products that are in accordance with the wishes of consumers and can increase the competitiveness of companies, it is necessary to pay attention to how to procure products and select the right suppliers. Toko Sembako Gabe is one of the SMEs that does not yet have the right supplier to become a rice supplier. This research aims to assist business owners in determining the right rice supplier at Gabe Grocery Stores. This research uses the Analytical Hierarchy Process (AHP) method. The criteria used in this study are quality, price, delivery, flexible and fast response. Based on the criteria and sub-criteria in supplier selection, supplier 1 is the first priority with a weight of 1.080, supplier 3 is the second choice with a weight of 0.695 and supplier 2 is the last choice with a weight of 0.288. Based on the results of this study, the best supplier to be chosen by Toko Sembako Gabe is supplier 1 (Grosir Tiga Brother)
ANALISIS KRITERIA KUALITAS VAPE BERDASARKAN PREFERENSI KONSUMEN DI KOTA BATAM Muabdi S, Ais; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 9 No 7 (2023): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v9i7.7881

Abstract

This study was conducted to analyze differences in consumer preferences in determining the quality and attitudes of consumers towards vape attributes in the city of Batam. The research was conducted in Batam Kota sub-district in June 2023. The method in this study uses a survey method with interviews based on a list of questions on a questionnaire. The sample was determined by random sampling method with 168 samples. The analysis used in the research is Chi Square analysis and Fishbein Multi-attribute. Chi Square analysis shows that apart from the comparison between prices below three hundred thousand rupiahs and between three hundred thousand rupiahs to seven hundred and fifty thousand rupiahs there is a difference of 95% confidence level. This means that there are differences in consumer preferences on vape. Multi-attribute Fishbein analysis shows that there are three attributes that get good consideration and two attributes get sufficient consideration in determining the quality of vape. The order of vape attributes from the highest consideration to the lowest consideration in determining vape quality is the availability of spare parts, product design, battery life, brand and price.
ANALISIS PENGENDALIAN KUALITAS PRINTING HOUSING TOP MELITA PADA PT LEON TEKNOLOGI GLOBAL Laia, Saferia Suiman; Asmarawati, Citra Indah
Computer Science and Industrial Engineering Vol 9 No 8 (2023): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v9i8.7969

Abstract

PT Leon Teknologi is a company engaged in the coating or polishing of raw materials for parts and even assy such as spray painting which has several large customers in the city of Batam, HSG TOP Melitta is a customer in the field of spray painting who has just collaborated with PT Leon in 2020 In terms of quality control issues at PT Leon, visual reject is the main contribution, with a reject rate of 3.5% of the total quantity during the last 6 months of production in the spray painting process, such as Crack on, scratch, White/Black dot and Over painting on Housing Top melitta after printing, Factors Causing Defects on Fishbone analysis, namely from scratch From Human Factors, scratch defects are caused by a lack of production operator training which causes inaccurate operator handling and a lack of understanding of the types of product defects that occur in the production process and methods, namely The lack of clarity on work instructions for the spray painting process caused the spray painting process to be inconsistent with operator procedures and finally the material, which is a type of material that is easily scratched, needs to be reviewed for work instructions on the Melitta upper housing. The Crack factor from Crack is likely to occur in mixing paint with thinner which has a ratio of 1 (Paint): 3 (Thinner) and in general some Spray Painting uses a ratio of 1 (Paint) : 1.3 (Thinner) and some experiments use a ratio of paint and thinner the latest so that out of 30 samples no Crack was Found
Analisis Kelayakan Usaha Pada UMKM Ayam Geprek Sambal Lesung Paradisa Ginting, Kristanto; Citra Indah Asmarawati
Computer Science and Industrial Engineering Vol 10 No 2 (2024): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v10i2.8438

Abstract

Business feasibility analysis in MSMEs Ayam Geprek Sambal Lesung Paradisa is an aspect of feasibility study assessment to avoid risks in a business. The purpose of this study is to assess the business feasibility of MSMEs Ayam Geprek Sambal Lesung Paradisa. To determine the level of feasibility in terms of several aspects, namely legal aspects, market and marketing aspects, technical and technological aspects, and management aspects. The research uses qualitative analysis from several aspects, namely legal aspects, market and marketing aspects, technical and technological aspects, and management aspects, the results of this study show that MSMEs Ayam Geprek Sambal Lesung Paradisa is feasible to run and have good prospects for development.
Studi Kelayakan Pengolahan Rumput Laut Di Desa Jang hidayat, fizy; Citra Indah Asmarawati
Computer Science and Industrial Engineering Vol 10 No 2 (2024): Comasie
Publisher : LPPM Universitas Putera Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33884/comasiejournal.v10i2.8491

Abstract

Background: Indonesia is an archipelagic country with a water area of ​​6,315,222 km2 and a coastline of 99,093 km2. The underwater wealth located in the Karimun Regency area, precisely in Moro District, can be a business opportunity for small and medium enterprises (UKM). The aspects studied are Legal Aspects, Environmental Aspects, Market and Marketing Aspects, Technical and Technological Aspects, Management and Human Resources Aspects1. Market and marketing aspects owned by CV. Moro Pure Marine Collagen is able to determine demand and supply to consumers. 2. Technical and technological aspects owned by CV. Pure Marine Collagen Moro has met the eligibility criteria. 3. Human resource management aspects in Human resource management aspects in CV. Moro's Pure Marine Collagen has an organizational structure with an even distribution of duties and responsibilities in each section. 4. The legal aspect states that CV. Pure Marine Collagen Moro has a legal business entity, namely CV and has a business license such as SIU, as well as a halal certificate for collagen drink products so that this company is recognized and legal. 5. Environmental aspects examine production activities carried out by CV. Moro Pure Marine Collagen has no negative impact on the environment. Production waste is only liquid waste resulting from washing seaweed from dirt.