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1	Applied Sciences and Information Technology	ABS-30
Utilizing Internet of Things Technology in the Development of AC Electrical Circuit Trainer Module Olnes Yosefa Hutajulu, Mhd Dominique Mendoza, Erita Astrid, Reni Rahmadani Universitas Negeri Medan Abstract This research focuses on the development of an AC electrical circuit trainer module based on the Internet of Things (IoT) technology. The aim is to enhance the learning experience in the field of electrical engineering by integrating IoT capabilities into the traditional electrical circuit trainer. The module is designed to enable interactive and remote learning, allowing students to access and control the AC circuit experiments through IoT-enabled devices. The research methodology involves a systematic design and development process, starting with the analysis of the educational needs and objectives. The IoT-based AC electrical circuit trainer module is then designed and implemented with the integration of IoT sensors, actuators, and communication protocols. The effectiveness of the module is evaluated through experimental studies, where students^ engagement, comprehension, and practical skills are assessed. The results demonstrate the potential of the IoT-based AC electrical circuit trainer module to significantly improve the learning experience in electrical engineering education. The interactive and remote access features offered by IoT technology empower students to explore and experiment with AC circuits independently, promoting self-directed learning and critical thinking. The findings of this research contribute to the advancement of innovative teaching methodologies and highlight the transformative impact of IoT technology on engineering education Keywords: AC electrical circuit, Trainer module, Internet of Things, Interactive learning Share Link | Plain Format | Corresponding Author (Olnes Yosefa Hutajulu)

2	Applied Sciences and Information Technology	ABS-62
Development of Electric Motor Control Trainer Kit as Student Practicum Media Muhammad Isnaini, Denny Haryanto Sinaga, Vivi Emilawati Universitas Negeri Medan Abstract The issue that lecturers and students have when conducting practicum is that some of the existing trainer kits have not been adequately arranged and coordinated, and some trainer kits need to be modified. When completing practicum, lecturers and students face the difficulty that some of the available trainer kits have not been efficiently structured and coordinated, and certain trainer kits require modification. The purpose of this research is to provide an electric motor controller training kit as a practical medium for students of electrical engineering education.. The ADDIE development paradigm is used in this study: (1) analysis, (2) design, (3) development, (4) implementation, and (5) evaluation. According to the total validation results, material expert validation received an average of 4.57 in the very good category, while media expert validation received an average of 4.86 in the very good category. Keywords: trainer kit, electric motor controller, practice of using and setting electric motor Share Link | Plain Format | Corresponding Author (Muhammad Isnaini)

3	Applied Sciences and Information Technology	ABS-66
DEVELOPMENT OF GEOGRAPHIC INFORMATION SYSTEM OF DAIRI REGENCY TOURISM OBJECTS BY APPLYING CIRCULAR METHOD Harvei Desmon Hutahaean (a*), Ali Akbar Lubis (b), Rosma Siregar (c) a,b,c) Faculty of Engineering, Universitas Negeri Medan, Jl. Willem Iskandar Pasar V Medan Estate *harvei.hutahaean[at]gmail.com Abstract There are many tours in Indonesia but not all tourist areas are managed by the local government properly, related parties are less able to promote tourism in a web-based way. Therefore, many tourists do not visit tourist attractions whose information is not managed properly. Geographic Information System is the answer to the problems that exist in the field of tourism. Geographic Information System is developed by applying a circular method which can later help prospective tourists who want to visit a place by searching for tourist attractions to visit, tourists can see the locations they want to go to, accompanied by maps, and on the other hand related parties will also experience benefits in the form of foreign exchange input from tourists. Thus, this research is expected to produce a geographic information system that helps recommend types of tourist destinations that are suitable to visit. The development of a Geographic Information System that is built is a website that makes it easier for visitors or guests who will go to the tourist area. Keywords: Geographic Information System, Tourist Object, Circular, Arc View, Google Map API Share Link | Plain Format | Corresponding Author (Harvei Hutahaean)

4	Applied Sciences and Information Technology	ABS-79
DEVELOPMENT OF GRAMMATIC LEARNING MEDIA A1 ARTIFICIAL INTELLIGENCE (AI) BASEDPlease Just Try to Submit This Sample Abstract Risnovita Sari, Indah Aini, Fauziah Universitas Negeri Medan Abstract One form of interactive learning media is Artificial Intelligence (AI) based learning media. AI is a computer science that creates an artificial brain as a machine to work and react like the human brain to process a lot of information and data and provide computer-based conclusions in a relatively short and fast time. The use of Artificial Intelligence in education has revolutionized teaching and learning methods in education. The purpose of this research is to create an AI-based learning platform using Kahoot for Grammar 1 courses. Kahoot is a free online game-based platform that allows users to arrange multiple choice assessments that turn into interactive games for students. Kahoot can help learning evaluation activities become more interesting, interactive, conducive and easy to monitor student learning outcomes. Making this media uses the ADDIE development model (Analysis, Design, Development, Implementation, Evaluation). Keywords: development, learning media, Grammatics 1, Artificial Intelligence Share Link | Plain Format | Corresponding Author (Risnovita Sari)

5	Applied Sciences and Information Technology	ABS-89
Analysis of Crossover Probability (Pc) on Genetic Algorithm Performance in Optimizing Course Scheduling in the Unimed Electrical Engineering Study Program Rudi Salman (a*),Irfandi(b),Suprapto(c),Sayuti Rahman(d),Herdianto(e) (a) Electrical Engineering (Universitas Negeri Medan) *rudisalman[at]unimed.ac.id (b) Education of Physic (Universitas Negeri Medan) (c) Mechanical Engineering (Universitas Negeri Medan) (d) Information system (Universitas Harapan Medan) (e) Informatics Engineering (Universitas Panca Budi Medan) Abstract Genetic Algorithm (GA) performance speed is determined by computation time. Computing time in AG for finding the optimum value is strongly influenced by the following parameters: population size (pop size), Crossover Probability (Pc), Mutation Probability (Pm), and the selected selection method. Pc is one of the essential parameters in GA. A chromosome that will reach the best solution can be obtained from the crossover process of the two parent chromosomes. The Pc value strongly influences the crossover process. Determining the appropriate and correct Pc value indicates how large the parent chromosome will experience crossover. The method used to analyze the effect of Pc on GA performance is changing the Pc value between 0.80-0.95. The simulation used MATLAB R2012b to obtain the best computational time for each Pc value. Meanwhile, the other GA parameters remained the same: Pm=0.05 and population size=100 for each change of Pc value. The test results using MATLABR2012 show that the fastest computing time is in the range of Pc values between 0.85-0.95 with an average computation time of 0.14564s. This indicates that for the case of optimizing the scheduling of courses in the Unimed Electrical Engineering study program, the Pc value between 0.85-0.95 will provide the fastest computation time. Keywords: Crossover probability, Genetic Algorithm, Computation time, Optimization, Course scheduling Share Link | Plain Format | Corresponding Author (Rudi Salman)

6	Applied Sciences and Information Technology	ABS-90
The Effect Of Financial Inclusion, Financial Literacy On Sharia Fintech AcceptaSMEs Using The Technology Acceptence Model (TAM) in Medan City Khairunnisa Harahap, Akmal Huda Nasution, Jumiadi A.W. Universitas Negeri Medan Abstract This paper aims to describe the effect of financial literacy and financial inclusion on Financial Technology (FinTech) shariah for SMEs in Indonesia with technology acceptance model (TAM). This study uses quantitative methods with analysis tools SEM PLS. The population in this study were SMEs in Medan City with data collection technique used a questionnaire. The results of the study show that there is a positive influence between islamic financial literacy and financial inclusion on financial technology for SMEs in Medan City. Findings of the study reveal that Islamic FinTech^s acceptance is determined by perceived ease of use, perceived usefulness and also self efficacy variable. For further researchers, it is hoped that they can add variabels or factors that affect financial literacy and islamic financial inclusion, as well as what financial products they have owned and used. Keywords: Shariah FinTech, Financial Inclusion, Finacial Literacy and SMEs Share Link | Plain Format | Corresponding Author (Khairunnisa Harahap)

7	Applied Sciences and Information Technology	ABS-93
FORENSIC LINGUISTICS ANALYSIS OF SPEECH HAS LEGAL EFFECT IN SOCIAL MEDIA IN THE REGION OF NORTH SUMATERA Wisman Hadi1, Pulumun Peterus Ginting2, Reh Bungana Beru Perangin-angin3 Universitas Negeri Medan Abstract One function of language is as tool to express thoughts and feelings. In utilizing this function, language users choose certain forms and media that are most suitable for conveying meaning or intent. Related to that, this study aims to explain (1) the forms of legal offenses and (2) the meaning of legal offenses committed by certain individuals on social media in the North Sumatra Region. This research method is descriptive qualitative. Data was collected through the technique of listening in a conversational manner by observing the language behavior of certain persons and documenting it. Then, the data is described, interpreted in form and meaning by utilizing forensic linguistic theory, the offense is determined according to the ITE Law, and presented formally and informally. The results showed that there were eight forms of legal insults, namely (1) insults, (2) defamation, (3) religious blasphemy, (4) unpleasant acts, (5) provocation, (6) incitement, (7) spreading fake news, and (8) threats. These forms are realized linguistically in the form of words, phrases, clauses, and sentences using negative connotation word choices. The meanings of these forms vary, for example personifying a person with an animal. Keywords: form, law, forensic linguistics, meaning, utterance Share Link | Plain Format | Corresponding Author (Wisman Hadi)

8	Applied Sciences and Information Technology	ABS-111
DATA FLOW DIAGRAM DESIGN FOR MULTIMEDIA LABORATORY MANAGEMENT INFORMATION SYSTEMS AT UNIVERSITAS NEGERI MEDAN Fahmy Syahputra (*), Zulkifli Matondang, Amirhud Dalimunthe Universitas Negeri Medan *)famybd[at]unimed.ac.id Abstract Data Flow Diagram (DFD) is a diagram used to graphically depict the flow of data in a business information system. They are used to indicate the scope and boundaries of the system as a whole and to communicate between a systems analyst and everyone involved in the system. DFDs are built using standard symbols and notation to describe various entities and their relationships. They are easy to understand for both technical and non-technical people, making them a useful tool for system documentation. A DFD consists of four main components: data input, data output, data storage, and processes that move data between them. In this case, a case study of the use of DFD for multimedia laboratory management information systems at Universitas Negeri Medan. Keywords: Data Flow Diagram, Information Systems Share Link | Plain Format | Corresponding Author (Fahmy Syahputra)

9	Applied Sciences and Information Technology	ABS-112
Material Testing Laboratory Management Application at the Faculty of Engineering, Universitas Negeri Medan Zulkifli Matondang(*), Harun Sitompul, Fahmy Syahputra Universitas Negeri Medan *) zulkiflimato[at]gmail.com Abstract This study aims to produce an application for managing materials testing laboratories at the Faculty of Engineering, Medan State University. The research method used is development research using the SDLC (System Development Life Cycle) development methodology, a waterfall model with stages namely requirements (identification of needs), analysis, design, implementation and testing. The resulting system is a multiplatform-based application using the PHP and MySQL programming languages. This information system can be used to process laboratory equipment data starting from inventorying tools, materials, using, checking, returning, making reports and other documentation. Keywords: Material testing laboratory, System Development Life Cycle Share Link | Plain Format | Corresponding Author (Zulkifli Matondang)

10	Applied Sciences and Information Technology	ABS-113
USE CASE DIAGRAM DESIGN FOR INFORMATION SYSTEM SERVICES TO STUDENTS AT THE FACULTY OF ENGINEERING UNIVERSITAS NEGERI MEDAN Harun Sitompul (*), Zulkifli Matondang, Eka Daryanto, Fahmy Syahputra Universitas Negeri Medan *) profharun[at]unimed.ac.id Abstract Use case diagrams work by describing the interaction between the user and the system through a story about how a system is used. Use case diagrams consist of several elements, namely actor, case, system, association, include, and extend. Use case diagrams are very useful for understanding how the system works and how actors are involved in the system. The sequence of steps that explains the relationship between the user and the system is called a scenario. Each scenario describes a sequence of events. Each sequence is initialized by a person, another system, hardware, or a time sequence. Apart from that, a use case is also defined as an abstraction of the interaction between the system and actors. Use case diagrams describe the expected functionality of a system. The emphasis is on ^what^ the system does, and not ^how^. A use case is a specific job, in this case for information system services to students at the faculty of engineering Universitas Negeri Medan Keywords: Usecase Diagram, Information System Share Link | Plain Format | Corresponding Author (Harun Sitompul)

11	Applied Sciences and Information Technology	ABS-147
Identification of Coral Reef Distribution in Simeulue District M Taufik Rahmadi (a), Eni Yuniastuti (b) Department of Geography Education, Faculty of Social Sciences, Universitas Negeri Medan, Indonesia *taufikrahmadi[at]unimed.ac.id Abstract Coral reefs are one of the coastal ecosystems that have high productivity. Coral reefs are ecosystems that are highly vulnerable to changes caused by temperature, humans, pH and salinity. The condition of coral reefs scattered in the coastal areas of Indonesia is currently in an alarming condition, so an efficient, effective and accurate data collection is needed. One technology that can be used is the use of remote sensing data. Mapping using remote sensing data can be done with Landsat 8 OLI image data. This study aims to map the abundance and changes in the distribution of coral reefs in Simeulue District. The results of this study include the distribution of coral reefs in Simeulue Regency, changes in the distribution of coral reefs, and the factors that cause changes in distribution. Keywords: Mapping, Abundance, Distribution, Coral Reefs, Simeulue Share Link | Plain Format | Corresponding Author (M Taufik Rahmadi)

12	Applied Sciences and Information Technology	ABS-186
Analysis of fintech user satisfaction among Medan City MSMEs Ulfa Nurhayani, Dedy Husrizal Syah, Faisal Rahman Dongoran, Gaffar Hafiz Sagala, Ridho Syafrizal State University of Medan Abstract The study aimed to examine the effect of information quality and system quality on fintech user satisfaction among MSMEs in Medan City. This study used primary data in the form of questionnaires, which were distributed to 156 MSMEs in Medan City. This research resulted in the quality of information having a significant positive effect on fintech user satisfaction among MSMEs, as well as the quality of the system having a significant positive effect on fintech user satisfaction among MSMEs. The contribution of this research is that MSME players can maximize the benefits of fintech applications by understanding how to use them optimally and utilizing accurate information for better decision-making. Keywords: information quality, system quality, satisfaction, fintech, MSMEs Share Link | Plain Format | Corresponding Author (Ulfa Nurhayani)

13	Applied Sciences and Information Technology	ABS-205
The Design of the Alumni and Career Development Center (ACDC) Application at Faculty of Engineering, Universitas Negeri Medan Bagoes Maulana (a*), Rosma Siregar (a), Tonggo Sinaga (b) a) Faculty of Engineering, Universitas Negeri Medan Jl. Willem Iskandar / Pasar V, Medan, North Sumatra 20221, Indonesia *bagoesmaulana[at]unimed.ac.id b) Faculty of Mathematics and Natural Sciences, Universitas Negeri Medan Abstract One of key indicator of higher education accreditation is the absorption of its alumni in the world of work. The Faculty of Engineering, at Medan State University does not yet have a special forum that carries out the function of providing information on job opportunities for the alumni and yet establishing cooperation with the employer to integrate the system. Therefore, this study aims to design an Alumni and Career Development Center web-based application to connect the Business World and the Industrial World with the alumni that can be accessed by alumni and employer online. The Agile Method, UML, the PHP programming language, and the MariaDB database engine is used in designing the system. However, the system still needs to be improved in integrating the process of candidates selection. Based on the testing data, shows the results which indicate the system is reliable to be implemented. Keywords: alumni, career center, application, agile method Share Link | Plain Format | Corresponding Author (Bagoes Maulana)

14	Applied Sciences and Information Technology	ABS-208
Study of the Potential of Medium Carbon Steel as Main Pressure Vessel Material: A Literature Study Sapitri Januariyansah (a*), Hidir Efendi (b), Dwiki Muda Yulanto (c), Safri Gunawan (d) a) Mechanical Engineering Education, Faculty of Engineering, Universitas Negeri Medan Jl. Willem Iskandar Pasar V, Sumatera Utara 20221, Indonesia *sapitrijanuariyansah[at]unimed.ac.id b) Mechanical Engineering Education, Faculty of Engineering, Universitas Negeri Medan Jl. Willem Iskandar Pasar V, Sumatera Utara 20221, Indonesia c) Automotive Engineering Education, Faculty of Engineering, Universitas Negeri Medan Jl. Willem Iskandar Pasar V, Sumatera Utara 20221, Indonesia d) Automotive Engineering Education, Faculty of Engineering, Universitas Negeri Medan Jl. Willem Iskandar Pasar V, Sumatera Utara 20221, Indonesia Abstract The application of pressure vessel technology in various industrial sectors is a common thing that often happens. This is caused by the main function of the pressure vessel which plays a very important role in industrial jobs. As a result, there has been an increase in the cost of making pressure vessels, especially in terms of workmanship. Medium carbon steel is one of the materials that is esasy to obtain and inexpensive. However, the common material of pressure vessels is seamless steel. The purpose of this study is to analyze the potential of medium carbon steel as the main material for pressure vessels. This type of research was a literature review. This study explores the properties of medium carbon steel which was then compared to the characteristics of the pressure vessel. The results of the study show that medium carbon steel can be the main material for pressure vessels because it has moderate mechanical properties that are strong against high pressure. However, medium carbon steel has a good corrosion rate. Medium carbon steel can be used as a basic material for pressure vessels with certain treatments. Keywords: high pressure- industrial- good corrosion Share Link | Plain Format | Corresponding Author (Sapitri Januariyansah)

15	Applied Sciences and Information Technology	ABS-209
The performance of dryer box using desiccant to improve drying rate Safri Gunawan (a*), Hanapi Hasan (a), Henry Iskandar (a), Sapitri Januariyansah (b), Supriadi (c) a) Automotive Engineering Education Department, Engineering Faculty, Universitas Negeri Medan, Jl. William Iskandar, Indonesia *safri_gunawan[at]unimed.ac.id b) Mechanical Engineering Education Department, Engineering Faculty, Universitas Negeri Medan, Jl. William Iskandar, Indonesia c) Mechanical Engineering Department, Engineering Faculty, Universitas Tjut Nyak Dhien, Medan, Indonesia Abstract Humidity in drying process is a factor that affects how fast the drying process occurs. The thing used to lower the humidity level is desiccant which used to reduce the moisture content in drying process. The purpose of this study is to design a dryer box and the addition of desiccant to determine the performance of the dryer box by determining SMER and SEC during the drying process. The method used in study is directly carried out by utilizing solar energy directly to generate electricity from solar photovoltaics. The results shows that the utilization of desiccant improved the performance of dryer box. The main conclusion of this study convinced that the humidity is a factor to improve drying rate and desiccant was the material used Keywords: Humidity- desiccant- dryer box- SMER- SEC Share Link | Plain Format | Corresponding Author (Safri Gunawan)

16	Applied Sciences and Information Technology	ABS-215
^we are now getting more relaxed^: students^ perception in using android based fatigue measurement Syamsul gultom, Dewi Endriani, Agustin Sastra Harahap Universitas negeri Medan Abstract Android based fatigue measurement is the application invented by the author to measure the fatigue level. Besides measuring the fatigue level, this application is also completed with the relaxation movement to reduce the fatigue. During the breakout of Covid-19, the writers applied this application to the students who performed online learning. This study explored the students^ experiences using this application. There were 180 students used this application. But only 15 students were chosen to be interviewed about their experiences while using the application. It was determined by the frequency of application usage. The results show that this application helps them in reducing their fatigue. The movement in the application is suitable for the students who stay in front of the computer all the day. The music instrument also helps them to get more relaxed and comfortable after studying. This application is useful for the fatigue relief during the online studying. Improvement is needed to the application for the display. Keywords: Fatigue, university student, online learning, application Share Link | Plain Format | Corresponding Author (Syamsul Gultom)

17	Applied Sciences and Information Technology	ABS-235
Preparation and Structure Characteristics of Huta Ginjang Quartz Sand as Host Matrix Candidate of Rare Earth Ions Juniastel Rajagukguk1, Donna Helen Rajagukguk1, Chayani Sarumaha2,3 1,2Department of Physics of Universitas Negeri Medan, Medan, North Sumatera 2Physics Program, Faculty of Science and Technology, Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand 3Center of Excellence in Glass Technology and Materials Science (CEGM), Nakhon Pathom Rajabhat University, Nakhon Pathom 73000, Thailand Abstract Quartz sand is one type of material formed from volcanic eruptions in nature, rich in silicon dioxide (SiO2) compounds. Quartz sand is also commonly referred to as silica sand, as it serves as the primary raw material for producing high-transparency glass. In this research, the preparation and characterization of the structure of quartz sand from Huta Ginjang, Taput Regency, North Sumatra, were conducted, and it was composited with several modifying compounds to serve as a candidate host matrix for various rare earth ions. The sample composition followed the chemical formula (60-x) B2O3 + 10 BaO + 30 Na2O, where x represents the quartz sand content (x = 0- 5- 10- 15- and 20 mol.%). The structural patterns of the samples were observed using an X-ray fluorescence spectrometer (XRF) and an X-ray diffractometer (XRD). Keywords: Quatz sand- Silika Glass- Structure Characteristic Share Link | Plain Format | Corresponding Author (Juniastel Rajagukguk)

18	Applied Sciences-Computers and Engineering	ABS-20
Experimental Study of Used Lubricant Oil Combustion as an Alternative Energy Source Robert Silaban (a), Janter Pangaduan Simanjuntak (b,*), Firdaus (c), Izwar Lubis (d), Lisa Melvi Ginting (e) (a), (b), (c), (d), (e) Mechanical Engineering Department, Faculty of Engineering, Universitas Negeri Medan, Jl. Willem Iskandar Psr. V. Medan Estate, Medan 20221, North Sumatera, Indonesia (*) janterps[at]unimed.ac.id Abstract Liquid waste such as used lubricating oil (ULO) is a very dangerous environmental polluting material. However, this waste can be used as an alternative energy source by burning directly because the basic material of this material is hydrocarbons such as petroleum in general. In this article, a study of the direct combustion of used oil using a simple stove is reported. ULO was fed into the stove which has an internal air distributor. The air combustion needed was given through a blower and controlled using an airflow meter. A handheld thermometer was used to measure the temperature of the fire. The data were plotted in a graph and can be understood easily. The results showed that higher combustion fire temperature of 750C can be produced during combustion. The observations show that the pollution produced is still within the limit of government regulations. The results of this study showed that ULO has the potential to be used as an alternative energy source. Keywords: Hazardous waste, Used lubricant oil, Combustion, Stove, Air distributor, Thermal energy Share Link | Plain Format | Corresponding Author (Robert Silaban)

19	Applied Sciences-Computers and Engineering	ABS-29
Analysis of Pedestrian Planning in the City of Medan Irma Novrianty Nasution, Syahreza Alvan, Meuthia Fadila Fachruddin Universitas Negeri Medan Abstract The rapid urbanization and population growth in cities have led to an increase in the number of pedestrians, making pedestrian planning a critical aspect of urban development. This study aims to analyze the pedestrian planning strategies implemented in the city of Medan, Indonesia. The analysis begins by examining the current pedestrian infrastructure and its adequacy to meet the needs of pedestrians in terms of safety, accessibility, and comfort. Various factors, such as sidewalk conditions, crosswalks, pedestrian signals, and street furniture, are evaluated to assess the overall quality of the pedestrian environment. The study also investigates the effectiveness of existing pedestrian planning policies and their alignment with international standards and best practices. It identifies any gaps or deficiencies in the current planning approach and provides recommendations for improvement. Furthermore, public opinion and stakeholder perspectives on pedestrian planning are considered through surveys and interviews to gain a comprehensive understanding of the challenges and opportunities faced by pedestrians in the city. Additionally, the analysis takes into account the influence of land use patterns, transportation systems, and urban design on pedestrian planning. It examines how these factors contribute to pedestrian connectivity, walkability, and overall urban livability. Furthermore, the study explores potential strategies and innovative interventions that can enhance pedestrian safety and convenience. The findings of this analysis will contribute to evidence-based decision-making for future pedestrian planning initiatives in the city of Medan. It will provide valuable insights for urban planners, policymakers, and stakeholders to create a more pedestrian-friendly city environment. The results can be used to develop comprehensive and sustainable strategies that prioritize the needs of pedestrians, improve connectivity, and promote active modes of transportation. Keywords: pedestrian planning, urban development, Medan, infrastructure, walkability, safety, accessibility, urban design Share Link | Plain Format | Corresponding Author (Irma Novrianty Nasution)

20	Applied Sciences-Computers and Engineering	ABS-43
Rainfall Analysis in Flood Prone Areas in Binjai City Sarra Rahmadani1, Rumilla Harahap2, Ahmad Zulfikar3, Menna Fadillia4 Universitas Negeri Medan Abstract High rainfall is one of the factors that often cause flooding, mainly if the drainage does not function optimally in an area. So it is necessary to analyze precipitation to know the maximum rain in a place to be considered in a drainage plan. The flood-prone area to be analyzed is Binjai City on Jalan Soekarno Hatta with frequency analysis methods: (1) normal distribution, (2) normal log distribution, (3) log person III, and (4) Gumbel. The analysis used 18 years of rainfall data with a return period of 50 years. The results obtained were (1) Normal 1017.857 mm, (2) normal log distribution 917.211 mm, (3) log person III 763.160 mm, (4) Gumbel 1412.4255 mm. From these results, the frequency analysis of the Gumbel method, which has the most extreme value, this data can be used for further study to obtain the results of rainfall intensity values, which can later be used as supporting data for drainage planning for the Soekarno Hatta area, Binjai City. Keywords: Rainfall, Frequency Analysis, Binjai City Share Link | Plain Format | Corresponding Author (Sarra Rahmadani)

21	Applied Sciences-Computers and Engineering	ABS-44
Identification of Testing Soil Physical Properties Through Landslide Material Characterization Suhairiani Suhairiani(a*), Nahesson H Panjaitan(a), Siti Zulfa Yuzni, Enny Keristiana Sinaga(a), Hafiz Achmad Fauzan(a), Fairuza Marhamah(a) (a)Universitas Negeri Medan Jalan Willem Iskandar pasar V, Medan 20221, Indonesia *suhairiani[at]unimed.ac.id Abstract Landslide occurs due to the displacement of slope-forming material in the form of rock, debris, soil, or mixed materials that move down or out of the slope. To find out the characteristics of the potential for landslide, testing soil is carried out, that is one of testing soil physical properties which consists of water content, sieve analysis, bulk density, specific gravity, and Atterberg limit. This research uses an experimental method which is done in the laboratory, that it cames from soil that has occurred landslide which is taken from 4 (four) sub-districts in Sibolga, namely (1) sub-district in South Sibolga, in the area of Aek Parambunan, (2) sub-district in Silbolga town, in the area of pancuran gerobak, (3) sub-district in North Sibolga, in the area of Hutabarangan, and (4) sub-district in Sibolga Sambas, in the area of pancuran Dewa. The results that want to be achieved in this research are data on the characteristics of the soil physical properties which will be analyzed for soil sliding. so that the results of this test are expected to assist in a construction work and it can determine the appropriate methods and appropriate actions which are related to the potential for landslide hazards Keywords: Landslide- Sibolga- Soil Physical Properties Share Link | Plain Format | Corresponding Author (Suhairiani Suhairiani)

22	Applied Sciences-Computers and Engineering	ABS-45
Improving Quality of Used Lubricant Oil as an Alternative Fuel Through the Pyrolysis Process Bisrul Hapis Tambunan (1), Janter Pangaduan Simanjuntak (2,*), Robert Silanab(3), Riduwan(4) 1,2(*),3Mechanical Engineering Department, Universitas Negeri Medan, Medan 20221, North Sumatera, Indonesia 4UKM Arang Binaan PKBL PT. KIM, Medan, North Sumatera, Indonesia Abstract Handling the problem caused by hazardous waste and toxic (B3 waste) including used lubricating oil (ULO) of vehicles is very important because it has a negative impact on the environment and living things. In addition, exploration of energy sources continues to be carried out due to a decrease in the main energy source causing the energy crisis issue to get scarier. ULO is one of the renewable energy sources that can be used as an alternative fuel through pyrolysis. This study aims to examine the pyrolysis process of ULO by controlling its temperature and heating rate. The research method is a laboratory test where a certain amount of ULO is put into the pyrolysis reactor, then heated at a controlled temperature. Due to the influence of heat, ULO decomposes on several types of liquids named waste oil pyrolysis fuel (WOPF) similar to conventional fuels which can be identified by the color of the resulting liquid. Furthermore, combustion was carried out using a simple stove to determine the temperature of combustion and flue gases that can be achieved as an indicator of the thermal energy content in pyrolysis oil. Compared with the combustion of kerosene fuel, the WOPF has the same character as kerosene fuel and can be used as an alternative fuel, especially for industrial processes. Keywords: Used lubricant oil, Pyrolysis, Combustion, Thermal energy Share Link | Plain Format | Corresponding Author (Bisrul Hapis Tambunan)

23	Applied Sciences-Computers and Engineering	ABS-65
Effect of LC filter in reducing harmonic current in NVIS 7017 three-phase synchronous generator lab trainer Azmi Rizki Lubis (*a), Adi Sutopo (a), Marwan Affandi (a) a) Faculty of Engineering, Universitas Negeri Medan Jalan Willem Iskandar Pasar V Medan Estate, Kenangan Baru, Percut Sei Tuan, Deli Serdang Regency, North Sumatra 20221 *azmirizkilubis[at]unimed.ac.id Abstract The electrical energy conversion laboratory located in the electrical engineering workshop environment is a room for students majoring in electrical engineering education at Universitas Negeri Medan for electrical machinery practice activities. From several student practicum modules, there is one module of testing the open circuit characteristics of a three-phase synchronous generator and testing the characteristics of a three-phase synchronous generator short circuit using the NV7017 Three-Phase Synchronous Generator Lab Trainer. From the observation results, this trainer contains a total harmonic distortion current of 82.1%. After research using an LC filter, it can reduce the content of harmonic currents that appear to be 14.28%. The results obtained are good but according to the IEEE 519 -2019 standard for ISC / IL = 46.77 for a 220-volt system voltage, the permissible third-order individual harmonic distortion current (IHDi) is 7%, while the research results obtained are 12.65%. So it is necessary to conduct further research in order to determine other types of harmonic filters that can reduce harmonic currents according to IEEE 519 - 2014 standards. Keywords: The LC Filter- Harmonics- three-phase synchronous generator Share Link | Plain Format | Corresponding Author (Azmi Rizki Lubis)

24	Applied Sciences-Computers and Engineering	ABS-81
Integration of Virtual Reality (VR) Technology and Building Information Modeling (BIM) in Design Drawing Studio Room, Faculty of Engineering, Universitas Negeri Medan with Green Building Concept Harry Wibowo (a*), Ahmad Zulfikar (a), Denny Meisandy Hutauruk (b) a) Department of Architecture, Faculty of Engineering, Universitas Negeri Medan b) Department of civil engineering, Faculty of Engineering, Universitas Negeri Medan Abstract The application of virtual reality (VR) technology in building design can provide a fun and interactive experience for users to explore the building design concept. Besides that, building information building (BIM) can provide accurate and integrated 3D data about aspects of facilities, such as architecture, structure, mechanical, electrical, and plumbing. This research will evaluate how the integration of VR and BIM can be used in simulating the Green Building concept under the constraints of natural lighting and natural airing of image studio space by existing standards. This research will analyze how VR can be used to improve user interaction with building concepts and how BIM can be used to provide accurate and integrated data for natural lighting and natural ventilation analysis. Overall, this research will provide insight into how the integration of VR and BIM can be used to improve the quality of Green Building concept simulations in image studio spaces and provide solutions to create environmentally friendly buildings. Keywords: VR (Virtual Reality), BIM (Building Information Modeling), Green Building Share Link | Plain Format | Corresponding Author (Harry Wibowo)

25	Applied Sciences-Computers and Engineering	ABS-95
Computer Malfunction Early Detection System Design Lisa Melvi Ginting, Ressy Dwitias Sari, Azmi Rizki Lubis, Vivi Ramayanti Harahap, Mhd. Dominique Mendoza Universitas Negeri Medan, Universitas Negeri Jakarta Abstract Early detection is part of the expert system. An expert system is an application in a computer that aims to help make decisions or aims to solve problems in a specific field. Diagnosing computer failure is a time-consuming and expensive task to do manually. Intelligent systems called expert systems were introduced to develop hardware failure diagnoses for any computer system. Problems with PC components can be detected by the sound coming out of the spiker when the BIOS performs a POST (Power On Self-Test). It sounds different depending on the problem. This paper aims to design a computer damage early detection system based on user experience using the five planes method, namely the strategy plane, the scope plane, the structure plane, the skeleton plane and the surface plane. The result of this paper is the design of a computer damage early detection system interface based on beep sounds. Keywords: expert system, computer malfunction, five planes method Share Link | Plain Format | Corresponding Author (Lisa Melvi Ginting)

26	Applied Sciences-Computers and Engineering	ABS-104
THE EFFECT OF MORTAR LIQUEFACTION LEVEL ON NORMAL CONCRETE STRENGTH USING NATURAL SODA WATER IN PARBUBU VILLAGE Kinanti Wijaya (a*), Sutrisno (b), Nono Sebayang (c), Syafiatun Siregar (d), Ahmad Andi Solahuddin (e) a) Faculty of Engineering, Universitas Negeri Medan, Medan, Indonesia *kinanti.w[at]unimed.ac.id b,c,d,e) Faculty of Engineering, Universitas Negeri Medan, Medan, Indonesia Abstract To find out the overall performance of a concrete, it is necessary to first study the performance of the mortar. The constituent materials of the mortar consist of fine aggregates, portland cement and water with a certain amount of composition. The amount of water used in the composition of the mortar has an impact on the level of melting of the mortar. The water used in mortar and concrete mixtures is clean water and natural sparkling water. The purpose of this study was to determine the effect of the level of mortar melting on the strength of normal concrete using natural sparkling water from Parbubu Village with variations of natural sparkling water, namely 0%, 50% and 100% of the required water weight. The method used in this study was an experimental study of mortar melting against normal concrete strength. The level of mortar melting resulting from the mortar mixing study with a variation of 0% natural sparkling water was 110.526% with a compressive strength of 15,537 MPa- natural sparkling water mixture 50% mortar meltability value of 114.356% with the resulting compressive strength of 15.903 MPa- and a mixture of natural sparkling water 100% mortar melt value of 113.826% with a compressive strength of 14,967 MPa. Based on the results of research on the effect of mortar melting level on normal concrete strength that uses natural sparkling water from Parbubu Village as a mixture and substitution of clean water on mortar and concrete, it can be used in the manufacture of wall or acian stucco, masonry plastering and others. Keywords: Mortar, Workability, Natural Soda Water, Concrete Share Link | Plain Format | Corresponding Author (Kinanti Wijaya)

27	Applied Sciences-Computers and Engineering	ABS-107
STUDY OF SPATIAL PATTERN IN DEVELOPMENT PREDICTION OF MEDAN CITY BUILDING LAND USING THE CELLULAR AUTOMATA MODEL Muhammad Farouq Ghazali Matondang, Meilinda Suriani Harefa, Mulhady Putra Pendidikan Geografi, Universitas Negeri Medan Abstract An increase in the need for land will encourage changes in land use. Medan City is one of the largest cities with rapid urban development in Indonesia. This happened as a result of an increase in population and higher population mobility in the city of Medan. Due to these factors, there has been growth in development and changes in land use which have brought changes to the physical area. Therefore this research was carried out in modeling the development of residential areas in the city of Medan. The method used in determining the pattern of the direction of physical changes in the city is cellular automata, while to predict the development of urban built-up areas in year n, landusesim and Arc GIS software are used. Thus the expectations of this research are: 1. Predicting the direction of urban built-up land development 2. Analyzing the suitability of the spatial use of Medan City with the spatial plan. Keywords: Spatial Planning, Built Areas, Cellular Automata. Share Link | Plain Format | Corresponding Author (Muhammad Farouq Ghazali Matondang)

28	Applied Sciences-Computers and Engineering	ABS-117
Assessing Soil Engineering Properties for Landslide Susceptibility in Karo Regency, Indonesia Muhammad Qarinur (a*), Ernesto Maringan Ramot Silitonga (a), Dody Taufik Absor Sibuea (a) a) Civil Engineering Study Program, Universitas Negeri Medan, Jl. Willem Iskandar Psr.V, Medan, Sumatera Utara, Indonesia, 20221 *m.qarinur[at]unimed.ac.id Abstract Landslides are geological phenomena that pose significant threats to communities and infrastructure. Understanding the soil engineering properties of landslide-prone areas is crucial for effective risk assessment and mitigation strategies. This study investigates the soil engineering properties of landslide-prone areas in Karo Regency, focusing on understanding the dominant soil composition after landslide events. In-situ testing, laboratory experiments, and geological surveys are conducted to examine key soil parameters. The research findings reveal that the soil affected by landslides in Karo Regency is predominantly composed of sand. This knowledge can significantly contribute to enhancing disaster preparedness and mitigating future landslide-related risks in Karo Regency and similar landslide-prone regions worldwide. Keywords: Landslides- Disaster- Soil Investigation Share Link | Plain Format | Corresponding Author (Muhammad Qarinur)

29	Applied Sciences-Computers and Engineering	ABS-121
Performance Analysis of Lithium-Ion Batteries on Electric Bike With 350 W BLDC Motor Denny Haryanto Sinaga, Muhammad Aulia Rahman Sembiring, Rudi Salman, Arwadi Sinuraya, Bobby Hernando, M. Azmi Aulia Department of Electrical Engineering, Faculty Of Engineering, Universitas Negeri Medan Abstract Automotive technology that has developed has made researchers pay more attention to carbon emissions produced by vehicles, therefore the energy transition from motorized vehicles to electric cars is a program that is being intensively carried out in 2023. Batteries are an important element as an energy source in electric vehicles. Research on using Lithium-ion batteries for electric bicycles needs to be carried out to see the performance of the batteries used in electric bikes. Electric motorbike propulsion in this study uses a 350 W BLDC Hub Wheel Drive motor with 12 Ah Lithium-Ion Batteries. The results of this study are the performance values of using Li-Ion batteries on electric bicycles. Keywords: Performance, Battery, Lithium-Ion, Electric Bike, BLDC Motor Share Link | Plain Format | Corresponding Author (Denny Haryanto Sinaga)

30	Applied Sciences-Computers and Engineering	ABS-122
Design and Construction of an Electrical Installation Trainer for Laboratory Experimental Muhammad Aulia Rahman Sembiring, Jongga Manullang, Lia Maharani Lubis, Denny Haryanto Sinaga,Reza Arbi Azizi Lubis, Ricky Nelson Tampubolon Department of Electrical Engineering, Universitas Negeri Medan Abstract The Department of Electrical Engineering Education, Faculty of Engineering, Medan State University uses a limited number of conventional project boards for electrical installations. It is necessary to add a modular electrical installation trainer. This study aims to design a trainer for lighting electrical installations as a learning medium and to test the feasibility of trainers in the electrical installation laboratory. This research method is Research and Development. Based on this method, what is done is to plan and build a lighting installation trainer, then give it to students to use as learning media. This research examines the feasibility and trials of electrical installation trainers by giving questionnaires to lecturers and students. The expected results from the electrical installation trainer are very feasible to use. Keywords: Trainer Module, Electrical Installation, Modular Share Link | Plain Format | Corresponding Author (Muhammad Aulia Rahman Sembiring)

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