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Sainteks: Jurnal Sain dan Teknik
Published by Universitas Insan Cendekia Mandiri
ISSN : -     EISSN : 26858304     DOI : https://doi.org/10.37577/sainteks.v5i2
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Engineering Industrial & Manufacturing Engineering
Sainteks is a scientific journal that publishes research papers encompassing all aspects of natural sciences, technology and engineering. This journal is published 2 (two) times a year (March and September) by the Faculty of Engineering UICM d/h UNBAR. The fields covered by the Sainteks Journal include: - Chemical Engineering - Textile Chemical Technology - Industrial Engineering - Science - Textile Industry Technology - Environment
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 16 Documents
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Search results for , issue "Vol 6 No 1 (2024): Maret" : 16 Documents clear
Re-Design Modern Industrial Workshop Table with Total Deformation Analysis and Stress Test Juwitasari, Dhian; Kristianto, Fesa Putra; Fariz, Nuthqy
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.616

Abstract

Modern Industrial Workshop Table is a table used for the manufacture of furniture at the workshop site. Workshop tables are usually used to set furniture work ranging from light to heavy. Currently, workshop tables are not widely sold in the market, but workshop table users prefer to design and make their own. Therefore, the Polytechnic of Furniture and Wood Processing Industry (Polifurneka) designed its own workshop table. In designing a workshop table the factors of comfort and strength are the main ones. On the strength factor, the design of the workshop table can be tested with the help of ANSYS software version 18.1. The analysis aims to find out the stress, deformation and crack test. The simulation results with 400N, 500N, and 600N forces are the maximum equivalent stress of 1,4x10-6 Pa, 1,75x10-6 Pa, and 2,1 x10-6 Pa. Total deformation of 0,011m, 0,013m, and 0,015m. The conclusions of this study showed that the results of the first design had deformations in the leg supports of the table. Therefore, re-design is carried out so that there is no deformation and the maximum equivalent value of the new design stress is 1,12x10-6 Pa, 1,4x10-6 Pa, dan 1,69 x10-6 Pa. The total deformation of the new design 1,12x10-5m, 1,58x10-5m, dan 1,82 x10-5m. From the results of the re-design, it was found that the increase in the value of maximum equivalent stress and maximum principal stress, a decrease in total deformation, and did not show deformation on the table legs. Therefore, the latest Modern Industrial Workshop Table design was chosen for use in Polifurneka workshops.
Analysis of Student Route Choice Model to University of Palangka Raya Using Multilogit Nomial Method Siahaan, Neagel Banderas Zepanya; Silitonga, Sutan Parasian; Elvina, Ina
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.618

Abstract

The various types of routes or traffic routes that will be taken to University of Palangka Raya require route selection so that it can be efficient in distance, travel time and cost. In the selection of this road network route, route selection will be analyzed from the results of field calculations with the perceptions of road users. The data is analyzed with the help of the SPSS application so that it can be seen which routes are most attractive to students when traveling to University of Palangka Raya, factors that influence students in choosing routes to University of Palangka Raya, and characteristics of users of travel routes to University of Palangka Raya. The methods used in this research are Descriptive Method and Multilogit Nomial Method. Based on the results of research with 664 respondents, the variables that influence the selection of student routes to University of Palangka Raya between Murung Raya Dormitory, Keminting, and Yos Soedarso are distance from residence to campus, distance (dummy variable), how to travel and other reasons (dummy variable), with probability results amounting to: Pasrama = 1.1%, Pkeminting = 69.3%, Pyos soedarso = 29.7%, Plainnya = 0%.
Social Normative Bounding and Brand Awareness of E-WOM Intensity in WhatsApp Group Online Community Mekar Arum PKK Group – Bojongsoang Hassanudin, Abdul Fatah; Murwenie, Ira; Avrianto, Alam; Lestari, Dwirani Fauzi; Puspa, Rahmina
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.619

Abstract

Currently, business transactions and communication with customers are carried out through various forms of digital platforms, one of which is using the WhatsApp application on smartphones. This research aims to determine the influence of normative social and brand awareness on the intensity of E-WOM in the WhatsApp Group PKK Mekar Arum - Bojongsoang Group application. This study uses a descriptive statistical approach of Multiple Linear Regression with a research sample of 55 people, each of whom represents one head of family and is a member of the WhatsApp Group under study. The data collection technique was carried out online using the Google Form application and processed with Microsfot Excell 2013 software. This research succeeded in proving that the influence of social norm attachment and brand awareness together had a significant influence on E-WOM intensity of 42.89% while 57.11% are other factors not examined in this study. This means that the PKK Mekar Arum – Bojongsoang Group uses E-WOM on the WhatsApp application mostly to improve communication and interaction between group members. Meanwhile, the intensity of using E-WOM is more aimed at introducing and building brand awareness of the products of PKK Group members and not in an effort to increase sales turnover from products promoted via the WhatsApp group..
Factors That Motivate Students to Register for Private Tutoring Using The Factor Analysis Method Nurhayati, Ai
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.636

Abstract

This research aims to identify factors driving students' motivation to register for private lessons. The method used in this research is the factor analysis method with the help of statistical software. The analysis technique in this research uses Principal Component Analysis. The research results show that two main factors motivate students to register for private tutoring: the benefit and reward factors. The benefit factor comprises the variables of many assignments, the desire for further studies, and the price offered. The award factor consists of the prestige variable for achievements and Olympic competitions.
Evaluation of Supplier Performance Using The Fuzzy AHP Approach to The CV. X Bandung Kite Glass Business Anggraito, Hendry
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.638

Abstract

One of the efforts to deal with the high level of business competition in the kite glass industry in Indonesia is to improve the quality of raw materials and optimize all available resources. However, internal improvements in the company are not enough, so the participation of all parties is needed, starting from suppliers who supply raw materials from China to Indonesia, namely to companies and feedback from kite glass craftsmen as users of these raw materials into finished products so that the quality of goods is in accordance with what is expected. desired by kite glass craftsmen in general as well as the distribution network that will deliver the product to the hands of the customer. In this regard, it is necessary to periodically evaluate suppliers so that the raw materials and products received by the company are in accordance with price, quality and delivery. This study aims to evaluate three suppliers and choose the best according to predetermined criteria and sub-criteria. To get the priority weight value for supplier assessment, researchers used the AHP fuzzy method.
Synthesis Oxalic Acid from Durian skin (Durio Zibethinus) with Alkali Smelting Method Hutagalung, Johannes Martua
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.640

Abstract

Durian (Durio zibethinus) , nicknamed The King of Fruit, is a fruit that is quite popular in Indonesia. This prickly fruit which has a pungent aroma and distinctive taste is very popular with many people. The edible part of the fruit (percentage of fruit flesh weight) is low, which is only around 20.52%, this means that there are around 79.48% which is the part that is not utilized for consumption such as the skin and seeds of the durian fruit. So, there is a lot of durian skin waste that will be produced. Durian fruit skin contains lignocellulosic materials, namely cellulose, hemicellulose, and lignin. Based on the data above, we want to utilize durian skin waste in research on the manufacture of oxalic acid. To make oxalic acid from durian fruit peel waste, we use the alkaline smelting method with several stages, namely: precipitation with CaCl2, acidification with H2SO4 and crystallization. The alkali used was NaOH with various concentrations of 3N, 4N, and 5N with cooking times of 30, 40, and 60 minutes at a temperature of 95oC. The optimum concentration of NaOH and optimum melting time to make oxalic acid from durian fruit peel waste was at the solution concentration. NaOH 4N and a time of 60 minutes with a weight % Yield of 6,95%.
Analysis of the Financial and Technical Feasibility of Erection a Herbal Medicine Factory Pt. Tugu Semar Production Using the Systematic Layout Planning Method Nada, Muhammad Bisyri; Oetomo, Dedy Setyo; Hermawan, Asep
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.643

Abstract

Abstract: With the increasing demand for herbal medicine and efforts to reduce the import value of herbal drugs, PT Tugu Semar Production plans to enhance production by establishing a new factory. The planning utilizes the Systematic Layout Planning (SLP) method and conducts a financial feasibility analysis related to the investment. The prospective location is in Blitar, with a production capacity of 100 liters or 500 bottles. The research also encompasses a financial feasibility analysis using capex data of Rp. 4,539,800,000 and first-year opex of Rp. 3,646,980,053. The financial feasibility analysis results in an Internal Rate of Return (IRR) of 21%, indicating the financial viability of the investment. With a significant IRR, the project estimates a return on investment within 4 years and 8 months. These findings provide a comprehensive insight into the success of herbal medicine factory planning using the SLP method and instill confidence that this investment holds high financial feasibility potential. The implications of this research are expected to offer strategic guidance to PT Tugu Semar Production in decision-making concerning the development of the herbal medicine factory in Blitar. Keywords: Systematic Layout Planning; NPV ; IRR ; PBP
Selection of CNC Tool Combinations Through The Approach of Genetic Algorithm Methods with The Criteria of Minimizing Machining Time and Considering The Minimum Machining Gap Yulianto, Irwan; Martikasari, Arida Murti
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.644

Abstract

The demand for products that require high precision is increasing. Therefore the production process with CNC machines is highly crucial. In the milling machining process, the roughing process takes the most time. The suitable selection of tools combination for the machining area will reduce the machining time. Roughing process sometimes cannot process the machining area with the minimum gap size. The research is to develop tools combination selection algorithm with the criteria of reducing machining time by considering the minimum gap in the workpiece machining area. The first stage is the preprocessing stage, which aims to initiate the tool size that can be used in the workpiece machining process and tools size grouping for the smallest gap machining process. The second stage is genetic algorithm (GA) stage, which aims to find the best tools combination according to the objective function. The sequence in the GA stage is determining initial solution, parents selection, crossover, mutation, regeneration, and determining the best solution. The developed algorithm has been tested on four workpieces. Characteristics of the features were tested on two closed pocket workpieces with island, each open pocket with island, and close pocket without island. Development of tools combination selection algorithm can assist in determining the best tools size to minimize the machining time.
A Business Feasibility Study for Glassware Production at CV Angga Putra Sejahtera Yulianti, Dini; Agustina, Amelia
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.647

Abstract

A business feasibility study is needed when a business owner wants to know whether the business to be run is profitable or vice versa, as in this study where CV. Angga Putra Sejahtera as a company wants to create an MSME company that makes glass products. The method used in this study starts from the market and marketing aspects by using the 4P marketing mix strategy and forecasting with the time-series model method. In the technical and technological aspects with the selection of the type of layout (layout), making the flow of the production process and production capacity, and the thing that becomes the focus of decision making on a project is the financial aspect where the method of calculating investment appraisal The results of this study explain the strategy used by this business is feasible. based on the market mix strategy and the appropriate forecasting results using a linear trend which has the smallest forecasting error value compared to other methods with the results obtained is the Mean Squared Error (MSE) Method of 1073.103. The layout chosen is the process layout because it looks at the process flow map that must be carried out sequentially until production is complete with a daily production capacity of 39 pcs for 6000 yards of yarn. The results of the financial analysis obtained a Net Present Value (NPV) of Rp698.188.945,536, with a Break event Point (BEP) of 4068 units/years, a Payback Period (PP) of 11 months, and an Internal Rate of Return (IRR) of 20,33%.
Factors Affecting of Use of LMS in Indonesia Prakarsa, Graha; Sudirman, Iman; Affandi, Azhar; Santoso, Ferry
Sainteks: Jurnal Sain dan Teknik Vol 6 No 1 (2024): Maret
Publisher : Universitas Insan Cendekia Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37577/sainteks.v6i1.648

Abstract

The rapid growth of e-marketplaces in Indonesia today, has led to many users adopting the system, due to the large number of e-marketplace mobile applications, making it necessary for developers to know and pay attention to several factors that influence users in adopting e-marketplace application systems at this time, one of which is the only cost factor is perceived by the user. Data were collected as many as 100 respondents who had some experience in using e-marketplaces on a mobile basis, then analyzed using partial least squares-structural equation modeling (PLS-SEM). This research is based on the conceptual framework of the Unified Theory of Acceptance and Use Technology (UTAUT). The constructs used in this study are performance expectancy, effort expectancy, social influence, and facilitating conditions, but also add a perceived cost variable. The results show that performance expectancy, effort expectancy, and perceived cost have a positive and significant effect on the actual use of mobile e-marketplace users in Indonesia, but social influence and facilitating conditions do not significantly affect the actual use of mobile e-marketplace applications in Indonesia.

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