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INDONESIA
Jurnal Mandiri IT
Published by Institute of Computer Science
ISSN : 23018984     EISSN : 28091884     DOI : https://doi.org/10.35335/mandiri
Core Subject : Science, Education,
Computer Science & IT Library & Information Science Mathematics
The Jurnal Mandiri IT is intended as a publication media to publish articles reporting the results of Computer Science and related research.
Arjuna Subject : Ilmu Komputer (semua kategori) - Kecerdasan Buatan
Articles 202 Documents
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Implementation of forward chaining in tourism recommendation selection expert system based on user preferences Firahmi Rizky
Jurnal Mandiri IT Vol. 12 No. 2 (2023): October: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v12i2.247

Abstract

Precise travel recommendations tailored to user preferences are a key element in enriching the travel experience. In this context, the Forward Chaining method in the User Preference-Based Travel Recommendation Selection Expert System offers a powerful and highly personalised approach. This article describes the implementation steps of the Forward Chaining method, which involves identification of user preferences, conversion of preferences to facts, initialisation of knowledge base, Forward Chaining process, evaluation of results, and customised travel recommendations. This method allows the system to dynamically respond to user preferences, generate accurate recommendations, and ensure that users are satisfied with their experience. However, some challenges such as privacy protection, complexity of user preferences, and knowledge base updates must be considered. Therefore, this article also discusses important implications of implementing the Forward Chaining method, including strict privacy protection, regular updates of the knowledge base, as well as the system's ability to learn from user feedback. In conclusion, the Forward Chaining method is a very useful approach in improving travel recommendation services tailored to user preferences, which can enrich the travel experience and result in higher satisfaction for users.
Heavy equipment spare parts inventory system using the Tsukamoto method (case study of PT Berkah Industry Lifting Machinery) M Mahaputra Hidayat; Eko Prasetyo; Fitri Aulia Damayanti
Jurnal Mandiri IT Vol. 11 No. 3 (2023): January: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

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Abstract

PT. BIMA located on Jl. Perak Bar. No.379, Surabaya City always maintains the quality of spare parts and maintains port facilities with accurate planning with hundreds of personel who are professionally certified in their fields and have several service services including as one of the suppliers of equipment and spare parts, especially for heavy equipment such as Cranes, Excavators (Bego), Wheel Loaders, Wales Stump and other heavy equipment.  In determining warehouse inventory, the Company can see from the exit of goods periodically either weekly or monthly. What often happens in various warehouses owned by PT. BIMA is in determining the stock of goods. There are times when the goods needed by the consulate are exhausted due to insufficient stock, especially in the monthly period. This research use Fuzzy Tsukamoto to problemsolving control systems that are suitable to be applied to systems, ranging from simple systems to complex or complex systems. Based on the tests that have been carried out In 16 tests, 11 spare parts of goods were obtained with the status of Good Stock information, meaning that the goods can be tested properly by the transaction system every month. Based on the test results of the Good Stock Control Unit 68.75%. Overstock Control Status amounted to 6.25%. The Tsukamoto Fuzzy System used in this research can provide stock recommendations to PT BIMA in a well-maintained stock status.
Jitsi meet integration analysis with moodle for synchronous distance learning Kadek Virgan Ardiat; I Nyoman Buda Hartawan; Ni Wayan Suardiati Putri
Jurnal Mandiri IT Vol. 11 No. 3 (2023): January: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

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Abstract

After the Covid-19 pandemic, learning activities were used to being carried out online. Utilization of the Learning Management System is starting to be widely used for asynchronous learning, while synchronous learning is carried out using different applications. In this study, a video conferencing server design was created to integrate Jitsi Meet with Moodle. On the Moodle server, install and configure the NginX, MariaDB, php, Moodle packages and install the Jitsi Meet plugin on Moodle. On the Cacti server, install and configure Cacti, manufacture devices, create graph trees, add graphs and monitor data on graphs. Black Box Testing is carried out to test the Jitsi Meet feature and to monitor the average use of CPU and memory during meetings. The results of the Black Box test on the Jitsi Meet feature get a percentage of 89.7% completion. In testing the average CPU usage in the Cacti application, a percentage of 3.21 was obtained. In testing the average memory usage in the Cacti application, a percentage was obtained of 33.56%.
Implementation of attendance machine for entrance access system based on barcode scanning Bakti Viyata Sundawa; Faisal Lubis; Cholish Cholish
Jurnal Mandiri IT Vol. 11 No. 3 (2023): January: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

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Abstract

Attendance in Universitas Muhammadiyah Sumatera Utara (UMSU) uses the manual attendance method. So it is less effective to implement, because manual attendance is not environmentally friendly and in the process fraud can still occur. In addition, the health protocols that we should have implemented both on campus and in classrooms must still exist considering this is a post-pandemic. Based on these problems, the purpose of this research is to make a prototype of the entrance and attendance access system which is carried out by utilizing the features on the NodeMCU ESP32. The design step is divided into 2, namely hardware and software design. The manufacturing process for the door access system is carried out by utilizing the Gy906 temperature sensor as a body temperature detector, a relay to turn on the pump, an IR proximity sensor to detect people who are going out, and a servo motor as an open- or closed-door driver. Next, the process of making attendances is carried out using a barcode on the KTM (Student Identity Card) which is connected to the application that has been made so that the output for the presence can be seen on a google spreadsheet. This tool can make it easier to make attendance and access entrances and exits without touching the door.
Analysis Of The Electromagnetic Wave Produced By Partial Discharge Measured Using Loop Antenna In Air Insulation Michael Stevano Sinurat; Farida Gultom
Jurnal Mandiri IT Vol. 11 No. 3 (2023): January: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

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Abstract

This study discusses the measurement of partial discharge in air insulation. Partial Discharge measurement is very important to know the condition of electrical equipment. Partial discharge causes are not only old equipment, but also from set-up errors and insulation problems. In this research, partial discharge measurement is using non-electric method. The non-electric method uses a loop antenna sensor that detects electromagnetic waves generated by partial discharge. Modeling the occurrence of partial discharge with a needle-plate electrode at a distance of 1 cm with air insulation. Partial discharge measurement parameters include Background Noise (BGN) measurements, Partial Discharge Inception Voltage (PDIV) and Partial Discharge Waveforms. The different parameters of each discharge were analyzed based on the given voltage level. The resulting data is a discharge wave obtained from an oscilloscope. The resulting data is processed using origin software so that it can determine the characteristics of the amplitude, duration of rise time and fall time of the discharge that occurs. From the results, it is known that the amplitude and duration of the rise time and fall time is greater at discharge with a higher voltage. The discharge characteristics depend on the applied voltage.
Face recognition system with vigenere cipher cryptography for document security Sukri Sukri; Luluk Elvitaria; Wandiah Ayu Barus
Jurnal Mandiri IT Vol. 11 No. 4 (2023): April : Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v11i4.185

Abstract

The issue of data security and confidentiality is one of the most important aspects of an information delivery system. In this case, it is closely related to how important it is that the information be sent and received by interested parties. Information will no longer be useful if, in the middle of the delivery process, the information is intercepted or hijacked by unauthorized people. Computer security is something that is very important in this information age, especially for an organization or company. Data confidentiality The computer security problem is very important in this information age, especially for an organization or company because documents are some of the most important data for the continuity of the company's operations. The branch of science that studies ways to secure data is known as "cryptography." The Vigenère-Chiper algorithm is one of the cryptographic methods for encoding text. This study aims to create a cryptographic application that can encode text and send encrypted text over a network based on the Vigenère Chiper algorithm. This application performs cryptography on text in the form of letters, numbers, and symbols. The key used is alphanumeric, which is a combination of letters, numbers, and symbols. The results of this study are in the form of an application that can send encrypted text messages through a local area network (LAN) so that the confidentiality of the message can be maintained.
Collaborative learning to improve communication skills in information and communication technology subjects Hasibuan, Rizki Koirum; Chandra, Detri Amelia; Wahyudi, Sri; Setiawan, Agung
Jurnal Mandiri IT Vol. 11 No. 4 (2023): April : Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v11i4.186

Abstract

The process of learning and teaching in vocational schools must be standardized to the needs. Learning models, methods and media must support mastery of communication skills (Communication Skill). The aim of this research is to find out how effective the use of E-learning and Collaborative Learning is to improve Communication Skill on information and communication technology. Linearity test concluded that there is a significant linear relationship between each independent variable (Use of E-front and Collaborative Learning) with Improved Communication Skill. The normality test to get the results of the research data is not normally distributed, so the data is included in non-parametric statistics and uses the Mann-Whitney U test to get results that between the research class and the control class there are differences in learning outcomes in information and communication technology.
Ground type resistance earthing system using bar electrodes Hardi, Gery Ulayya; Taufiq; Putri, Raihan; Nasution, Fakhruddin Ahmad
Jurnal Mandiri IT Vol. 11 No. 3 (2023): January: Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v11i3.191

Abstract

Providing a return line for short-circuit currents or fault currents to a low-resistance ground, a grounding system is useful for achieving a uniform potential voltage over a given area of buildings and equipment. Because a large voltage difference can occur if a fault current is forced to ground against high resistance. Placement of the electrode to be planted is one of the elements to obtain a low grounding resistance value. Grounding resistance measurements, which will serve as a guide for the grounding system design process, are required during the planning stage for certain types of grounding systems. The problem is how the grounding resistance is affected by the buried depth of the rod conductor and the soil-type resistance. Therefore, it is very important to conduct research and testing to determine the extent to which these parameters influence. The experimental results of measuring resistance on dry and wet soils are on dry soil 30 cm obtained 98.48 Ω, 60 cm obtained 37.07 Ω, 90 cm obtained 20.52 Ω, 120 cm obtained 19.77 Ω, and for wet soil at a depth of 30 cm obtained 43.34 Ω, 60 cm obtained 22.21 Ω, 90 cm obtained 15.43 Ω, 120 cm obtained 11.66 Ω.
Feasibility analysis of household electricity installation in Klambir V village Hamparan Perak district Deli Serdang regency Adi Sastra Pengalaman Tarigan; M.Rizki syahputra; Muhammad Fahreza
Jurnal Mandiri IT Vol. 11 No. 4 (2023): April : Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v11i4.193

Abstract

Household electrical installations over time experience change both in quality and quantity. The declining quality of electrical installations and changes in the number of load points greatly affect the feasibility of electrical installations and the safety of the users. This research was conducted to know the percentage level of feasibility of household electrical installations and the factors that cause the infeasibility of household electrical installations. This research is a qualitative research study using a descriptive approach which was carried out in Klambir V Village, Hamparan Perak District, Deli Serdang Regency. The objects studied were 20 houses with the sampling technique used in this study used a random sampling technique. The instruments used were observation, interviews, and documentation. The data obtained from this study is the Percentage Level of household electrical installations in Klambir V Village, Hamparan Peraak District, Deli Serdang RegencyGround resistance value is still quite large and categorized as "not feasible" for a grounding system used by a building. soil content or soil resistance is still 7.91 ohms and the electrode rod uses 1 rod.
Educational data mining for mapping the comprehension of personality subject using K-Means algorithm (case study of SD Insan Mulya) Wiwiet Herulambang; M Mahaputra Hidayat; Nabila Amanda Putri
Jurnal Mandiri IT Vol. 11 No. 4 (2023): April : Computer Science and Field.
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mandiri.v11i4.194

Abstract

The government has emphasized the importance of character education since the elementary school (SD) level by providing various subjects as an effort to build personality/character for each student. It is important for teachers and schools to know the level of understanding in their students. This research is for. This study uses the K-Means Clustering Algorithm method to help map students to the level of understanding of the Personality subject. The results of this study indicate that clustering using the K-Means Algorithm method contains 4 effective clusters in mapping the understanding of personality subjects. The result of the percentage of clusterization results with interviews is 89.39% while the percentage of software is 91.70%. The conclusions obtained in this research are the subjects of Moral Education, Religious Education, Citizenship Education are included in the Subjects that can affect the student's personality.

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