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INDONESIA
Jurnal Teknik Indonesia (JU-TI)
Published by SEAN INSTITUTE
ISSN : -     EISSN : 29640490     DOI : https://doi.org/10.58471
Core Subject : Science, Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering
Jurnal Teknik Indonesia (JU-TI) is published by the SEAN Institute. Jurnal Teknik Indonesia is a journal that contains scientific articles resulting from research, research and trials from researchers to be published as a reference for other researchers. The scope of the Jurnal Teknik Indonesia (JU-TI) is: Mechanical Engineering, Electrical Engineering, Chemical Engineering, Civil Engineering, Industrial Engineering, Computer Engineering, Informatics Engineering, Architecture, Energy and ConveSrsion Technology, Mathematics, Physics, Chemistry, Biology Jurnal Teknik Indonesia (JU-TI) is published 2 times a year (June and December). E-ISSN: 2964-0490
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 30 Documents
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Application Of Coding Arithmetic Methods And Methods Lzw For Compression Files Siddik Karo-Karo; Cosmas Samuel Daeli; Mamed Rofendi Manalu
Jurnal Teknik Indonesia Vol. 2 No. 02 (2023): Jurnal Teknik Indonesia (JU-TI), Desember 2023
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v2i02.243

Abstract

Efficient data storage and transmission have become of utmost importance in today's digital era. File compression processes are crucial to addressing this issue. The purpose of this study is to examine and compare the use of the Arithmetic Coding Method and the LZW Method in file compression. Both of these methods are known for their excellent compression capabilities, but there has been limited research comparing them in the context of real-world use. This research employed a range of files, including text, photos, and recordings, to test both approaches. Results indicate that the arithmetic coding method typically offers a slightly better compression ratio compared to the LZW method. However, LZW provides faster compression and decompression speeds, making it more suitable for real-time applications or where response time is critical. Nonetheless, the choice between these two methods largely depends on the specific needs of a given application. For purposes requiring the highest compression ratio, the arithmetic coding method might be more appropriate. however, the LZW method might be more suitable for purposes demanding quick compression and decompression. In summary, both the arithmetic coding and LZW methods have their own strengths and weaknesses. A thorough understanding of the features and requirements of the file to be compressed is vital for choosing the most fitting method. the LZW method might be more suitable for purposes demanding quick compression and decompression. In summary, both the arithmetic coding and LZW methods have their own strengths and weaknesses. A thorough understanding of the features and requirements of the file to be compressed is vital for choosing the most fitting method. the LZW method might be more suitable for purposes demanding quick compression and decompression. In summary, both the arithmetic coding and LZW methods have their own strengths and weaknesses. A thorough understanding of the features and requirements of the file to be compressed is vital for choosing the most fitting method.
Waste Analysis in the Hot Press Section Using the Qfm (Quality Filter Mapping) Method at Pt. Linggarjati Mahardika Mulia Pacitan Galuh Ari Nugroho; Aan Zainal Muttaqin; Doni Susanto
Jurnal Teknik Indonesia Vol. 3 No. 01 (2024): Jurnal Teknik Indonesia (JU-TI), June 2024
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v3i01.256

Abstract

PT. Linggarjati Mahardika Mulia is a company operating in the forestry sector located in Pacitan Regency, producing plywood with thicknesses ranging from 5mm, 8mm, 12mm, 15mm, 18mm. The subject of this research is the cause of waste in the hot press section of the pressing machine. The method used is Quality Filter Mapping because it is a relevant method for finding out the source of problems in the quality of the company's products. The results of this research showed that production in May with the highest percentage of plywood wastage occurred at a thickness of 15mm at 0.24% with a poor glue quality factor, and plywood with a thickness of 18mm at 0.24% for a damaged material factor. In June 2023, the highest wastage occurred in plywood with a thickness of 18mm at 0, 09% on the influencing factor is the quality of the glue is not good.
Performance Capacity Testing Of Hush Peeling And Soybean Seed Crusing Machine For Home Industry Scale Ravi Putra Pratama; Bambang Sulaksono; Husain Hasan
Jurnal Teknik Indonesia Vol. 2 No. 02 (2023): Jurnal Teknik Indonesia (JU-TI), Desember 2023
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v2i02.486

Abstract

The process of peeling and splitting soybeans is a process carried out by industry which uses soybeans to clean the skin and at the same time peeling them using a machine that peels the epidermis and also splits the soybeans can speed up the cleaning process. The machine for peeling epidermis and splitting soy beans uses a pulper as the part that peels and splits at the same time in one machine rotation. This model of machine for peeling epidermis and splitting soy beans is intended for home industries with a processing capacity of 10 kg/hour. The performance capacity test was carried out to test the ability to peel and split soybeans using a tube pulper with soybeans that had been soaked in water for 10 hours previously. Based on the tests carried out, it was found that the peeling and splitting capability of the machine for peeling the epidermis and splitting the soybean seeds was produced based on the initial weight before peeling, the soybeans that were completely peeled were 88.2% and the weight of the waste was 11.8%, peeled in imperfect conditions. broken and not peeled based on the influence of the gap in the peeling space of 2mm.
Identify the Maturity Level of Apples Using Fuzzy Logic Mamdani Andre Zulnardi; Daniel Udjulawa
Jurnal Teknik Indonesia Vol. 2 No. 02 (2023): Jurnal Teknik Indonesia (JU-TI), Desember 2023
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v2i02.545

Abstract

Apples are one type of fruit that has properties including preventing disease, nourishing the body and being a menu when running a diet. This study aims to develop an identification system for the maturity level of apples using the mamdani fuzzy logic method. Fuzzy logic mamdani is a fairly good method of identification because the classes to be used have been predetermined. In this study, the apples used were Rome Beauty apples. The maturity level is based on the color which is divided into two, namely green raw and reddish yellow ripe. Data processing is done by preprocessing images such as resizing fruit directly. The accuracy of the dataset measured using this method results in an accuracy of 96%. In this study, an analysis of the input and output features needed by Mamdani's fuzzy logic was also carried out in classifying the maturity level of apples. The results showed that the input data could not be used effectively to classify the maturity level of apples due to the lack of input types used.
Improvement Of Ergonomic Cassava Removal Device Design With REBA (Rapid Entire Body Assessment) Approach In Tanjung Harap Village, Serbajadi District Dimas Satrio; Suliawati Suliawati; Tri Hernawati
Jurnal Teknik Indonesia Vol. 2 No. 02 (2023): Jurnal Teknik Indonesia (JU-TI), Desember 2023
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v2i02.552

Abstract

The goal to be achieved in this study is to improve the cassava fruit plucking device that applies to the harvesting process so that it becomes an ergonomic auxiliary tool by considering the safety, comfort, effectiveness of workers in doing work. This type of research is included in correlational type descriptive research with the method used in the form of the REBA (Rapid Entire Body Assessment) method is one method to analyze and provide observations of work postures quickly and easily. From the results of the study, the REBA score was obtained from the sum of the total grub A score and the total Grub B score and activity value, the effectiveness value obtained was 1 and the REBA score obtained was 10 where the number indicated high discomfort so that workers expended a lot of energy when doing work which resulted in many complaints of pain felt by workers thus it was necessary to redesign the tools used to Pulling out cassava fruit so that it can reduce the discomfort of workers and reduce complaints felt by workers.
Forecasting Analysis of New Student Candidate Admissions Using the Simple Linear Regression Method Sardo Pardingotan Sipayung; Zakarias Situmorang; Zekson Matondang; Masdiana Sagala
Jurnal Teknik Indonesia Vol. 2 No. 02 (2023): Jurnal Teknik Indonesia (JU-TI), Desember 2023
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v2i02.561

Abstract

The development of science and technology facilitates various aspects of life, including forecasting. Forecasting student enrollment in private universities can maximize the use of resources for services, facilities, infrastructure, and improving human resources. The regression method is used to measure the effect of promotional costs on increasing student enrollment in the future. This forecasting will be valid if an accurate model is used. The results showed the level of accuracy using the MAPE (Mean Absolute Percentage Error) model of 2.229%. However, the level of accuracy can vary each due to differences in data.
Control of Auxiliary Materials in the Biodiesel Process Using the Min-Max Stock Method at PT. Permata Hijau Palm Oleo Belawan Agung Persada Zebua; Suliawati Suliawati; Mahrani Arfah
Jurnal Teknik Indonesia Vol. 3 No. 01 (2024): Jurnal Teknik Indonesia (JU-TI), June 2024
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v3i01.562

Abstract

Control of Auxiliary Materials in the Biodiesel Manufacturing Process Using the Min-Max Stock Method at PT. Permata Hijau Palm Oleo Belawan. The main reason why companies store raw materials in large quantities is as safety stock if there is a delay in delivery from suppliers so that the production process does not stop. This research was carried out on four auxiliary materials used for the Biodiesel manufacturing process, namely, Methanol, Catalist, HCl, and NaOH at PT. Permata Hijau Palm Oleo Belawan. From the research results, it was found that the final inventory of auxiliary materials during 2022 and 2023 was very large compared to inventory calculations using the Min-Max Stock method, namely for Methanol auxiliary materials, namely 390,182 Kg (2022) and 2,095,097 Kg (2023) compared to using the Min-Max Stock method of 316,852 Kg (2022) and 409,299 Kg (2023), with an investment cost of Rp. 10,898,701,800 Catalist, namely 1,130,654 (2022) and 1,776,481 Kg (2023) using the Min-Max Stock method of 76,325 Kg (2022) and 92,518 (2023), with an investment cost of Rp. 20,713,186,300, NaOH, namely 173,197 Kg (2022) and 152,905 Kg (2023) with the Min-Max Stock method of 36,466 Kg (2022) and 35,106 Kg (2023) with an investment cost of Rp. 2,107,404,600, HCl namely 130,767 Kg (2022) and 146,161 Kg (2023) using the Min-Max Stock method of 69,337 Kg (2022) and 63,821 Kg (2023) with an investment cost of Rp. 230,552,000. From the research results it can be concluded that controlling the inventory of auxiliary materials at PT. PHPO Belawan is still not optimal. The final inventory of auxiliary materials is still very large and the largest is Methanol auxiliary materials in 2023, Catalist in 2022 and 2023.
Effect of Temperature on Moisture Content in Kernel (Palm Core) in Seed Silo by Complete Random Design Method (RAL) in Kernel Crushing Plant Unit of PT. Smart Tbk, Belawan Utami Nanda Agfira; Bonar Harahap; Siti Rahmah Sibuea
Jurnal Teknik Indonesia Vol. 3 No. 01 (2024): Jurnal Teknik Indonesia (JU-TI), June 2024
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v3i01.563

Abstract

The moisture content in palm kernels is one of the crucial factors influencing the quality and productivity of palm oil production. This research aims to analyze the effect of temperature on the moisture content in palm kernels at the Seed Silo in the Kernel Crushing Plant Unit of PT. Smart Tbk, Belawan, using the Complete Randomized Design (CRD) method and Simple Linear Regression. The kernels were collected from several plots of oil palm plantations spread across certain areas. In the process, it is essential to understand how temperature affects the moisture content in the kernels. The study was conducted with four repetitions for each experiment to determine the moisture content analysis data of the kernels in the Seed Silo. The results of the moisture content reduction calculations showed an optimum temperature of 100°C with the lowest moisture content of 6.26%. Based on the Complete Randomized Design (CRD) method, the results showed that the F-calculated value of 3.12 was greater than the F-table value of 2.95, meaning that H0 was rejected (temperature does not affect moisture content) and H1 was accepted (temperature affects moisture content). It can be concluded that the experiments at each given temperature significantly affected the resulting moisture content. Then, using the Simple Linear Regression method, a correlation coefficient value of -1.00 was obtained, indicating a perfect negative correlation between temperature (X) and moisture content (Y). The coefficient value indicates the strength of the relationship between variables X and Y. Simple linear regression shows that the higher the temperature, the lower the moisture content in the palm kernels. The practical implications can include recommendations for optimal temperature settings in the handling and processing of palm kernels to improve the quality and productivity of the production output.
Web-Based Employee Performance Assessment Using Graphic Rating Scales Method At PT. STAR MULTI Meiarni Situkkir
Jurnal Teknik Indonesia Vol. 3 No. 02 (2024): Jurnal Teknik Indonesia (JU-TI), December 2024
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v3i02.626

Abstract

Work assessment or performance evaluation in a company is an effort to identify various weaknesses and strengths of employees as a basis for improving all weaknesses and strengthening strengths, in order to increase employee productivity and development. For that, performance evaluation can run with periodic performance assessments that are oriented towards the past or the future. Employee performance assessment is intended to determine whether the form of employee performance has met the expected work standards. Employee performance at each agencies must be optimized in order to achieve the goals of the agency. Therefore, performance evaluation is very important and encourages employee performance to continue to be improved by looking at the results of the performance assessment given. By implementing performance evaluation on human resources in the company, it is an effort that can answer the success or failure of the company's goals that have been set. The employee work assessment/performance evaluation must be carried out in the form of periodic performance assessments.
Web-Based Expert System for Diagnosing Rabies Disease Meiarni Situkkir
Jurnal Teknik Indonesia Vol. 3 No. 02 (2024): Jurnal Teknik Indonesia (JU-TI), December 2024
Publisher : SEAN Institute

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58471/ju-ti.v3i02.627

Abstract

This study discusses the design and creation of an expert system application to diagnose rabies in dogs using the certainty factor method and utilizing computers as a tool in providing consultation services on rabies. Expert system capabilities can be obtained by implementing an algorithm that will be determined by its performance. The expert system model that is created is then to help diagnose rabies early and to make it easier to serve pets without having to leave the house. In addition, with this program, it can help a veterinarian's task in serving his patients, especially dogs. After the implementation of the Certainty Factor method, an expert system application is produced that can identify rabies in dogs from several symptom inputs. This expert system can be developed if the input data is continuously updated so that rabies in dogs that are found can be even more.

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