Page 1 (data 1 to 30 of 191) | Displayed ini 30 data/page
1 2 3 4 5 6 7 NEXT >>

1	Applied Sciences and Information Technology	ABS-8
Analysis of thermal and visual comfort by utilizing the role of technology in the university canteen Zhilli Izzadati Khairuni, Harry Wibowo, Ahmad Zulfikar, Mirzal Yacub, Bambang Hadibroto State University of Medan Abstract One of the efforts to improve the quality of universities in order to achieve a World Class University (WCU) is by improving facilities in universities. The canteen, which is one of the important facilities in moving activity motorcycles, is also a means of activity for students, lecturers and university employees. The Auditorium Building of the State University of Medan has a room that is used as a university canteen with several types of activities, namely buying and selling/service activities. The purpose of this study is to find problems that occur in the canteen of the Auditorium of the State University of Medan in analyzing thermal and visual comfort in facilitating the activities of canteen users. Using a mixed method of a combination of quantitative and qualitative methods, this process will trace the level of problem-solving that occurs with the application of the role of technology in creating a good, safe and comfortable space atmosphere. The reference standards used for Thermal Comfort include SNI-03-6572-2001 concerning Procedures for Planning Ventilation Systems and Air Conditioning in Buildings, while the reference standards that can be used for aspects of Visual Comfort include SNI-03-6575-2001 concerning Procedures for Designing Artificial Lighting Systems in Buildings. Results of the analysis on thermal comfort is a form of cold or heat felt by the human body when carrying out activities to create a sense of comfort conditions that are more likely to be hot than around the place of activity can result in fatigue, drowsiness, or reduced work concentration, this can be said to be an uncomfortable condition. Meanwhile, the visual comfort in the Auditorium Canteen shows related to the intensity of the light around it. This lighting aspect is in the form of natural and artificial lighting, both of which affect the creation of visual comfort in the auditorium canteen. Outputs from the results of the study Analysis of canteen comfort in producing alternative design and spatial arrangement in the canteen room as well as directions and suggestions for the application of the role of technology. Keywords: Comfort, Thermal, Visual, Canteen, University Share Link | Plain Format | Corresponding Author (Zhilli Izzadati Khairuni)

2	Applied Sciences and Information Technology	ABS-15
Smart Weather Monitoring for Coffee Plantations: IoT-Based Automated Data Logging and Agronomic Decision Support Nurul Maulida Surbakti (a*), Muhammad Ashari (b), Dinda Kartika (a), Zul Amry (a), Riza Pahlawan a) Mathematics Department Faculty of Mathematics and Natural Sciences Universitas Negeri Medan *nurulmaulida[at]unimed.ac.id b) The Electrical Engineering Study Program, Faculty of Engineering, Universitas Negeri Medan Abstract Weather information plays a crucial role in various sectors due to Indonesia^s wide range of weather and extreme climate phenomena. This study describes the design and implementation of an Internet of Things (IoT)-based Automated Weather Station (AWS) installed in a coffee plantation in Perteguhan Village. The system uses an ESP32 microcontroller and a SIM7600A communication module to collect real-time meteorological data, including air temperature, humidity, wind speed and direction, rainfall, atmospheric pressure, and cloud coverage. Data are transmitted wirelessly using the MQTT protocol and automatically logged into Sheets. An application dashboard is used for weather parameter monitoring, enabling farmers to efficiently observe local weather conditions. The weather data serve as the basis for agronomic recommendations, supported by literature and expert consultation, to help farmers adjust their practices according to current environmental conditions. Field trials over a one-month period confirmed the system^s reliability in gathering and presenting relevant weather information for agricultural management. This solution is practical, affordable, and scalable, significantly enhancing decision-making support for rural farming communities. Keywords: IoT- Automated Weather Station- Agriculture- Data Logging- Decision Support Share Link | Plain Format | Corresponding Author (Nurul Maulida Surbakti)

3	Applied Sciences and Information Technology	ABS-39
**Analysis of the Impact of Population Size on Computational Time Efficiency in Genetic Algorithms for Course Scheduling** Rudi Salman(a*), Arwadi Sinuraya(b), Irfandi(c), Eswanto(d),Sayuti Rahman(e), Herdianto(f) a,b) Universitas Negeri medan, Prodi Teknik Elektro c) Universitas Negeri Medan, Prodi Pendidikan Fisika d) Universitas Negeri Medan, Prodi Teknik Mesin d) Universitas Medan Area, Prodi Teknik Informatika e) Universitas Panca Budi, Prodi Teknik Elektro Abstract Course scheduling is a complex problem within higher education systems that requires automated and efficient solutions. Genetic algorithms are widely employed due to their capability to explore large solution spaces. However, the efficiency of the algorithm highly depends on key parameters, one of which is the population size. This study aims to evaluate the impact of population size variation on computational time efficiency in the implementation of genetic algorithms for course scheduling. The study was conducted through MATLAB-based simulations in a real academic environment, testing population sizes ranging from 20 to 1000. Other parameters were held constant to ensure that execution time was influenced solely by changes in population size. The results reveal a non-linear relationship between population size and computational time, with the highest efficiency achieved at a population size of 300-400 individuals, yielding an average execution time of approximately 0.4924 seconds. Extremely small or large population sizes were shown to produce suboptimal execution times. These findings highlight the importance of empirical evaluation in algorithm parameter selection, particularly in systems with processing time constraints such as course scheduling. Keywords: Genetic Algorithm, population size, computational time, course scheduling, heuristic optimization, academic system Share Link | Plain Format | Corresponding Author (Rudi Salman)

4	Applied Sciences and Information Technology	ABS-57
The Younger Generation^s Views on Virtual Reality as a Promotional Media for Tourism in the Maimun Area Rezha Destiadi (1), Winny Gunarti Widya Wardani (2), Syahid (3), Rina Wahyu Winarni (4) (1) Computer Engineering and Informatics Department, Multimedia Graphics Engineering Technology, Politeknik Negeri Medan, Sumatera Utara, Indonesia, (2,3,4) Visual Communication Design Department, Universitas Indraprasta PGRI, Jakarta, Indonesia234 Abstract Maimun area, Medan city, North Sumatra, is a cultural heritage that has the potential to increase national economic growth, especially through the development of global-scale tourism. The availability of visual technology-based tourism promotional media is also greatly needed. A survey method with a quantitative approach was used as preliminary research. This study aims to determine the views of the younger generation on the potential advantages and disadvantages of Virtual Reality as a tourism promotional media for the Maimun area. The younger generation is considered to play an important role in continuing the nation^s cultural heritage. The results of the study indicate the potential for interest and desire to visit, as well as the potential for content and substance that do not meet expectations. This study is expected to be a reference for continuing the creation of a Virtual Reality model that suits the needs of global tourists. Keywords: Younger generation, views, virtual reality, tourism, promotional media. Share Link | Plain Format | Corresponding Author (Rezha Destiadi)

5	Applied Sciences and Information Technology	ABS-84
Development of an Android-Based Online Attendance System as a Learning Support Tool for Students in the Computer and Information Technology Education Study Program UNIMED Rosma Siregar, Bagoes Maulana, Muhammad Isnaini, Elsa Sabrina,Tansa Trisna Astono Putri,Raffi Hidayat Universitas Negeri Medan Abstract Student attendance is a critical component in managing academic activities, serving both administrative purposes and as a tool for evaluating the learning process. However, manual attendance systems commonly used in universities still suffer from several weaknesses, including proxy attendance, slow recording processes, and lack of integration with digital academic systems. This study aims to develop an Android-based online attendance system equipped with QR code scanning, GPS location validation, and face photo documentation to verify student presence. The system is designed to provide ease of use for both students and lecturers while improving the validity and efficiency of attendance data. The research employs a software engineering approach using the Waterfall development model, which includes requirements analysis, user interface design, system implementation, and testing. Test results show that the system functions effectively, features an intuitive interface, and can accurately and in real time record student attendance. Integration with GPS and the Android device^s camera allows the system to validate presence based on both location and facial identity. This system is expected to support a more secure, efficient, and comprehensive digitalization of attendance management in higher education. Keywords: Online attendance, Android, QR code, GPS, Educational information system. Share Link | Plain Format | Corresponding Author (Rosma Siregar)

6	Applied Sciences and Information Technology	ABS-89
Student Academic Performance Prediction Model Based on Machine Learning in PTIK Unimed Tansa Trisna Astono Putri, Reni Rahmadani, Rosma Siregar, Hanapi Hasan, Aida Khairina, Afif Hamzah Universitas Negeri Medan Abstract This research aims to analyze the implementation of machine learning algorithms in predicting the academic performance of students in the PTIK Study Program at Universitas Negeri Medan. The study utilizes several machine learning models, including Decision Tree, Random Forest, and Support Vector Machine, to process academic and demographic data of students. The methodology involves data preprocessing, feature selection, model training, and evaluation using accuracy, precision, recall, and F1-score metrics. The results indicate that machine learning algorithms can effectively predict student academic performance, with the Random Forest model achieving the highest accuracy among the tested algorithms. The findings highlight the potential of machine learning-based prediction models to support early identification of students at risk and inform strategic interventions to improve academic achievement. This research contributes to the development of data-driven decision-making processes in higher education, particularly in the context of the PTIK Study Program at Unimed. Keywords: Machine Learning, Academic Performance Prediction, Student Performance, PTIK Unimed, Higher Education, Data Mining Share Link | Plain Format | Corresponding Author (Tansa Trisna Astono Putri)

7	Applied Sciences and Information Technology	ABS-98
Virtual Laboratory for Educational Institutions a)S.Sriadhi*, b)A.Hamid, c)S.Siagian, d)W.R Adhitya, e)T.R.Adhitya a,b,c,d) Universitas Negeri Medan e) Universitas Sumatera Utara Abstract Competence is a key indicator for vocational education graduates in accordance with stakeholder standards. Unfortunately, vocational education graduates generally fail to meet these standards due to weak laboratory practicums. This is a chronic problem that requires immediate solutions. This research aims to develop a virtual laboratory model to support basic vocational education practicums, both through virtual lab applications and practicum content in the form of virtual practicum modules. This research is considered crucial to address the chronic problem of low competency, particularly in basic engineering and technical competencies. The research employed a development method. The feasibility of the virtual laboratory was tested using a feasibility test instrument based on expert justification, while the model^s acceptability and effectiveness were assessed using field tests through quasi-experiments. This research was conducted at Universitas Negeri Medan. The research outputs include (1) a virtual laboratory LMS model, (2) feasibility test result documents, (3) a manual and product specifications, (4) a video tutorial for the Virtual Lab application, (5) a virtual practicum module, (6) intellectual property in the form of copyright, and (7) scientific publications. The research findings are useful as a practical solution for vocational schools with limited basic laboratory facilities as a solution to improve graduate competency according to stakeholder standards. Keywords: laboratory- virtual- practicum- competency- stakeholder Share Link | Plain Format | Corresponding Author (Sriadhi S)

8	Applied Sciences and Information Technology	ABS-103
Thermodynamic Modeling of Energy Storage Units Before Design and Construction Janter P. Simanjuntak(1,*,a), Eka Daryanto (1), Bisrul H. Tambunan (1), Robert Silaban (1), Denny H. Sinaga (2,a) Universitas Negeri Medan Abstract Energy storage systems (ESS) play a critical role in enhancing the efficiency, reliability, and flexibility of modern energy infrastructures. This study presents a thermodynamic modeling approach to evaluate the performance and behavior of a closed-loop thermal energy storage system using water as the storage medium. The model incorporates principles of the first and second laws of thermodynamics to simulate charging and discharging processes, heat losses, temperature stratification, and energy efficiency. Parametric simulations were conducted to assess the influence of storage volume, inlet temperature, and flow rate on the thermal performance. The results show that higher inlet temperatures and optimized flow rates significantly improve the energy retention and reduce thermal degradation. This thermodynamic framework provides a valuable tool for the design, optimization, and integration of thermal energy storage systems in various applications, including renewable energy harvesting and waste heat recovery. Keywords: Thermal energy, Sensible heat, Thermal Storage, Charging energy, Discharging energy Share Link | Plain Format | Corresponding Author (Janter Pangaduan Simanjuntak)

9	Applied Sciences and Information Technology	ABS-115
Portrait of Knowledge About Nutritional Needs and Nutritional Status Among Fashion Students at Universitas Negeri Medan Yatty Destani Sandy (a*), Erni Rukmana (b), Kanaya Yori Damanik (c), Caca Pratiwi (d), Kalasta Ayunda Putri (e) a) Nutrition Study Program, Faculty of Engineering, Universitas Negeri Medan, Jalan Willem Iskandar Psr.V, Medan 20221, Indonesia. *yattysandy[at]unimed.ac.id b) Nutrition Study Program, Faculty of Engineering, Universitas Negeri Medan, Jalan Willem Iskandar Psr.V, Medan 20221, Indonesia. c) Nutrition Study Program, Faculty of Engineering, Universitas Negeri Medan, Jalan Willem Iskandar Psr.V, Medan 20221, Indonesia. d) Nutrition Study Program, Faculty of Engineering, Universitas Negeri Medan, Jalan Willem Iskandar Psr.V, Medan 20221, Indonesia. e) Nutrition Study Program, Faculty of Engineering, Universitas Negeri Medan, Jalan Willem Iskandar Psr.V, Medan 20221, Indonesia. Abstract Nutritional issues among university students are still a serious concern as they can affect health, learning concentration and productivity. Students often experience imbalances in their nutrient intake due to irregular eating patterns, fast food consumption, and a lack of knowledge about their daily nutritional needs. This is especially important for non-health students, such as those in the Fashion Study Program, who generally do not receive formal education about nutrition. This study aims to describe the knowledge of nutritional needs and nutritional status among fashion students at Universitas Negeri Medan. This research is a descriptive study with a quantitative approach. The sample consisted of 60 students selected by purposive sampling. Knowledge data was collected through a structured questionnaire, while nutritional status was determined through measurement of Body Mass Index (BMI). The results showed that most students had low nutrition knowledge (71.7%), while 28.3% were classified as moderate, and none had good knowledge. In terms of nutritional status, 56.7% of students had normal nutritional status, 20% were undernourished, and 23.3% were overnourished. This mismatch between knowledge level and nutritional status suggests that there are other factors that influence students^ eating behaviour. In conclusion, appropriate nutrition education interventions are needed to improve students^ understanding of the importance of nutrition to support a healthy lifestyle and academic achievement. Keywords: Nutritional needs- Knowledge- Nutritional status Share Link | Plain Format | Corresponding Author (Yatty Destani Sandy)

10	Applied Sciences and Information Technology	ABS-118
Development of Superhydrophobic Silica Based on Agricultural Biomass Waste as an Environmentally Friendly Corrosion Inhibitor Using Ultrasonic Dip-Coating Method on Metal Surfaces Lisnawaty Simatupang 1)*, Ricky Andi Syahputra 2), Elfrida Ginting 3), Maryati Doloksaribu 4), Binsar Maruli Tua Pakpahan 5), Fransiskus Hottua Malau 6), Carlos Rewandes Sitorus 7),Winri Imanuella Sihombing 8) 1,2,3,4,6,7,8, Department of Chemistry, Universitas Negeri Medan, Medan 20221, Indonesia * lisnawaty simatupang[at]unimed.ac.id 4, Department of Physics, Universitas Negeri Medan, Medan 20221, Indonesia 5, Department of Mechanical Engineering Education, Universitas Negeri Medan, Jl. Willem Iskandar Psr. V, Medan Sumatera Utara, 20221, Indonesia. Abstract Metal corrosion is a serious problem in the industrial world, causing material degradation, decreased efficiency, and increased operational costs. This study aims to develop a silica-based superhydrophobic coating from agricultural biomass waste as an environmentally friendly alternative to inhibit metal corrosion. Silica was extracted using the sol-gel method, modified using trimethylchlorosilane (TMCS), and formulated at a concentration of 1.0-5.0 percent in xylene solvent. The coating was applied to the surface of a metal plate using an ultrasonic dip-coating technique, then characterized using FTIR, XRD, and SEM. The FTIR spectrum demonstrated successful surface modification, characterized by the disappearance of the silanol group (SiOH) absorption band at 3420 cm-1 and the appearance of methyl groups (SiCH3) at 1260 cm-1 and Si-C groups at 840 cm-1. XRD indicated that the silica was amorphous, and SEM showed a fine particle morphology. The coating with a silica concentration of 3.0 percent demonstrated optimum performance with a water contact angle of 153.1 degrees and a shear angle of less than 10 degrees. Corrosion tests in 15 percent HCl and 3.5 percent NaCl media for 96 hours showed a decrease in the corrosion rate from 190.95 mpy to 37.42 mpy (HCl), and from 29.59 mpy to 2.13 mpy (NaCl), with inhibition efficiencies reaching 80.4 percent and 92.8 percent, respectively. These results indicate that the silica-TMCS coating from biomass waste is not only effective as a corrosion inhibitor but also has the potential to be developed as an environmentally friendly and sustainable functional coating. Keywords: metal corrosion- biomass silica- superhydrophobic- green inhibitor- environmentally friendly coating Share Link | Plain Format | Corresponding Author (Lisnawaty Simatupang)

11	Applied Sciences and Information Technology	ABS-120
Characterization of the Chemical and Microbiological Composition of a Fermented Beverage from Pineapple Peel (Ananas comosus (L) Merr.) Caca Pratiwi*, Nila Reswari Haryana, Iza Ayu Saufani, Latifah Rahman Nurfazriah, Muhammad Edwin Fransiari Nutrition Study Program, Faculty of Engineering, University State of Medan, Medan, Indonesia Abstract Pineapple peel is an agro-industrial by product that retains considerable nutritional and bioactive compounds, making it a promising substrate for the development of functional fermented beverages. Spontaneous fermentation of pineapple peel yields a traditional beverage known as tepache, which contains microbial metabolic products with potential health benefits. This study aimed to evaluate the chemical and microbiological properties of fermented pineapple peel beverage after 48 hours of spontaneous fermentation at ambient temperature. The research employed an experimental design using a 100 mL sample of tepache. Analytical assessments included measurements of pH, total acidity, total soluble solids (Brix), and microbiological evaluation via total plate count (TPC). Data were descriptively analyzed. The result indicated that the fermented beverage had a pH of 3.1, total acidity of 0.918%, and a total soluble solids content of 20 Brix. The TPC reached 6.1 x 10^5 CFU/mL, indicating substantial microbial activity during fermentation. The combination of low pH, high acidity, and significant microbial load suggest that fermentation proceeded actively and successfully produced a beverage with potential probiotic properties. In conclusion, the fermented pineapple peel beverage exhibits favorable chemical and microbiological characteristics, supporting its potential development as a locally sourced functional food product. Keywords: Fermentation, Pineapple peel, Tepache, Probiotic. Share Link | Plain Format | Corresponding Author (Caca Pratiwi)

12	Applied Sciences and Information Technology	ABS-132
The Influence of Using Prezi Media on Culinary Arts Learning Outcomes of Culinary Arts Education Students Siti Sutanti(a*), Erli Mutiara(a), Ajeng Inggit Anugerah(a), Dian Agustina Dalimunthe(a) (a) Culinary Arts Education, Faculty of Engineering, State University of Medan. .Jl. Willem Iskandar Psr.V Medan, North Sumatera. Indonesia (*)erli[at]unimed.ac.id Abstract The purpose of this research is to determine: 1) The learning outcomes of students in the Culinary Arts course using Prezi media. 2) The learning outcomes of students in the Culinary Arts course using PowerPoint media. 3) The effect of using Prezi media on learning outcomes in the Culinary Arts course. Research method. Quasi-experimental research design. The research location is Culinary Arts, State University of Medan. The research period is April-June 2025. The research population is all students of the Class of 2024 with a total of 60 people consisting of 2 classes. The sampling technique is class random. Class A is the experimental class and Class B is the control class. The data collection technique uses a test. The data analysis technique is descriptive data, analysis requirements and hypothesis testing using the t-test. Based on the results of the t-test analysis, there is a positive and significant influence on the use of Prezi learning media on student learning outcomes in culinary arts. This means that Prezi learning media has an effect on student learning outcomes in Culinary Arts. Keywords: Media, Prezi, Arts, Culinary Share Link | Plain Format | Corresponding Author (Siti Sutanti)

13	Applied Sciences and Information Technology	ABS-136
Symsdraw: A Desktop Application for Digital Design with Radial Symmetry to Enhance Geometric Precision and Visual Aesthetics Dinda Kartika (*), Fevi Rahmawati Suwanto, Nurul Maulida Surbakti Department of Mathematics, Universitas Negeri Medan, Jalan Willem Iskandar Pasar V, Medan 20221, Indonesia *dindakartika[at]unimed.ac.id Abstract Radial symmetry is a fundamental concept in visual design, characterized by the arrangement of elements around a central point, producing balanced and aesthetically pleasing compositions. This paper introduces Symsdraw, a desktop-based digital design application that leverages radial symmetry to facilitate the efficient creation of geometric patterns. The core feature of Symsdraw allows users to draw shapes and lines that are automatically replicated around a central axis, enabling the construction of intricate and harmonious radial designs without requiring manual duplication. By integrating real-time rendering and an intuitive user interface, Symsdraw supports a dynamic and accessible design process for users ranging from graphic designers and digital artists to educators in the fields of mathematics and visual arts. Preliminary evaluations indicate that the application enhances creative exploration and precision in geometric design. As a creative desktop tool, Symsdraw contributes to the growing field of visual computing and human-computer interaction, offering new possibilities in the generation of symmetric digital artworks. Keywords: Symmetric Drawing Tools- Geometric Patterns- Desktop Application- Radial Symmetry Share Link | Plain Format | Corresponding Author (Dinda Kartika)

14	Applied Sciences and Information Technology	ABS-137
Evaluating User Experience in the Ambatig Mobile Application for 2D Motif Generation Based on Frieze and Crystallographic Patterns Dinda Kartika (*), Debi Yandra Niska, Sisti Nadia Amalia Department of Mathematics, Universitas Negeri Medan, Jalan Willem Iskandar Pasar V, Medan 20221, Indonesia *dindakartika[at]unimed.ac.id Abstract Ambatig is a mobile application developed to facilitate the generation of two-dimensional decorative motifs based on mathematical symmetry principles, particularly frieze and crystallographic patterns. The application integrates computational geometry with artistic creativity through an intuitive interface designed for both novice and experienced users. To evaluate the user experience, a formal assessment was conducted using the User Experience Questionnaire (UEQ), which measures six key dimensions: attractiveness, perspicuity, efficiency, dependability, stimulation, and novelty. The evaluation involved 50 traditional batik artisans in the city of Medan, Indonesia, to assess the applicability of the application within a real-world cultural and creative context. Results indicate that Ambatig was positively received, with high scores in stimulation and novelty, reflecting the application^s potential to inspire creativity. Furthermore, positive ratings in perspicuity and efficiency suggest that the interface is accessible and easy to use, even for users with limited digital experience. These findings demonstrate that Ambatig can serve as an effective tool for supporting batik design innovation while bridging traditional craftsmanship with modern generative technologies. Keywords: User Experience- UEQ- 2D Motif Generation Share Link | Plain Format | Corresponding Author (Dinda Kartika)

15	Applied Sciences and Information Technology	ABS-145
Profiles of Physics Education Students at UNIMED in Using ChatGPT Viewed from Their Critical Thinking Skills Derlina, Binar Kurnia Prahani, Ummuhan Ormanci, Hanandita Veda Saphira, Irham Ramadhani, Reni Riani Universitas Negeri Medan Universitas Negeri Surabaya Universitas Bursa Uludag Universitas Wollongong Universitas Negeri Medan Universitas Negeri Medan Abstract This study aims to examine the profile of students in the Physics Education Study Program at UNIMED in utilizing ChatGPT for completing academic assignments. The research employed a quantitative method with a descriptive correlational design. Data were collected through structured questionnaires and critical thinking skill tests, involving a sample of 194 active students during the even semester of the 2024/2025 academic year. The results show that the students average critical thinking score falls into the low category, with a mean score of 40.77, ranging from 11.5 to 67.7. Analysis of ChatGPT usage profiles reveals that more than 90% of students demonstrated a high level of plagiarism, often copying answers directly without engaging in analysis or evaluation. These findings indicate that ChatGPT is predominantly used as an instant answer tool rather than as a learning aid that fosters critical thinking. Keywords: Student Profile- Critical Thinking Skills- ChatGPT Usage Share Link | Plain Format | Corresponding Author (Derlina M.Si)

16	Applied Sciences and Information Technology	ABS-148
Utilization of Survey123 and WebGIS Platform for the Data Collection and Analysis System of Disaster-Prepared School in Karo Regency Restu- Meilinda Suriani Harefa- Nurmala Berutu- Muhammad Ridha Syafii Damanik- Muhammad Farouq Ghazali Matondang Universitas Negeri Medan Abstract The vulnerability of Karo Regency in North Sumatra Province to natural disasters highlights the urgent need for an effective and integrated disaster preparedness system, especially within the education sector. This study focuses on the utilization of Survey123 and a WebGIS platform to build a data collection and spatial analysis system specifically for elementary schools designated as Disaster-Prepared Schools. Survey123, a mobile-based data collection tool, was used to gather real-time data on preparedness indicators such as infrastructure conditions, evacuation routes, and the presence of disaster education initiatives in elementary schools. These data were integrated into a WebGIS platform to enable spatial visualization, interactive analysis, and evidence-based decision-making. The results show that combining Survey123 and WebGIS enhances the efficiency, accuracy, and accessibility of preparedness data, offering a comprehensive overview of the vulnerability and capacity of elementary schools in disaster-prone areas. This system is expected to serve as a model for strengthening disaster risk reduction strategies in primary education and supporting stakeholders in planning, monitoring, and policy formulation. Keywords: Disaster-Prepared Elementary Schools, Survey123, WebGIS, Spatial Analysis, Karo Regency Share Link | Plain Format | Corresponding Author (Restu Restu)

17	Applied Sciences and Information Technology	ABS-157
Implementation of the K-Means Clustering Algorithm in City and Regency Clustering in North Sumatra Province Based on Small and Micro Industries Agnes Irene Silitonga, Ali Akbar Lubis, Jufri Darma, Ferry Indra Sakti H. Sinaga, Yoakim Simamora Universitas Negeri Medan Abstract Small and micro industries have a strategic role in the regional economy, especially in improving people^s welfare and driving economic growth. This study aims to cluster regencies and cities in North Sumatra Province using the K-Means Clustering algorithm. The data used include the number of business units, workforce, and bank capital loans in each region. The K-Means Clustering method was chosen because of its ability to cluster data based on similar characteristics so that it can provide an overview of the classification of regions with similar small and micro industry potential. The results of the study show that regencies and cities in North Sumatra Province can be clustered into three clusters, namely low, medium, and high clusters. The results of this clustering are expected to be the basis for local governments in designing more effective policies for the development of small and micro industries in each region, such as the allocation of capital assistance, training, and strengthening the industrial supply chain. Keywords: K-Means Clustering Algorithm, Small and Micro Industries, Clustering, Machine Learning Share Link | Plain Format | Corresponding Author (Agnes Irene Silitonga)

18	Applied Sciences and Information Technology	ABS-158
Implementing Sustainable Drainage Systems for Urban Flood Resilience in Medan Rumilla Harahap (a), Rachmat Mulyana (a), Kemala Jeumpa (a), Yusuf Aulia Lubis (a), Cut Meuthia Rani (a) a) State University of Medan Abstract This research is motivated by the significant impact of flood disasters, both in material and non-material losses, as well as the difficulty in prioritizing flood management in Medan City. The drainage system no longer functions optimally, causing recurring annual floods. The objective of this study is to implement a drainage system for flood disaster risk mitigation in Medan. This research includes mapping flood vulnerability and susceptibility indices through drainage system design, and developing guidelines for drainage system design. The methodology involves collecting both primary and secondary data. A flood risk index map is compiled based on vulnerability, susceptibility, and capacity indices with the support of Geographic Information System (GIS) technology, BMKG rainfall data, and land use data. Periodic flood discharge is calculated using the Rational Method, with a research and development (R&D) approach. Keywords: Drainage System, Flood Disaster, GIS, Medan City Share Link | Plain Format | Corresponding Author (Rumilla Harahap)

19	Applied Sciences and Information Technology	ABS-187
Development of a Natural Language Processing-Based Virtual Assistant for Optimizing Academic Services Fahmy Syahputra, Harvei Desmon Hutahaean, Amirhud Dalimunthe, Saras Pratama Universitas Negeri Medan Abstract The rapid advancement of technology in the field of artificial intelligence has encouraged the development of innovative solutions to improve service quality in higher education. This research focuses on the development of a virtual assistant based on Natural Language Processing (NLP) to optimize academic services. The virtual assistant is designed to facilitate various administrative and academic processes such as course registration, academic information retrieval, and student consultation scheduling. The system integrates NLP techniques for intent recognition, entity extraction, and context management, enabling it to understand and respond to user queries accurately. The development method used follows the agile model with iterative testing to ensure system reliability and user-friendliness. Evaluation results involving 100 students showed a 92% success rate in correctly understanding user queries and a significant reduction in service response time. The findings demonstrate that the NLP-based virtual assistant can enhance efficiency and accessibility in academic services, while also reducing the workload of administrative staff. Future development will focus on expanding the knowledge base and integrating predictive analytics to support academic decision-making. Keywords: Virtual Assistant, Natural Language Processing, Academic Services, Artificial Intelligence, Educational Technology Share Link | Plain Format | Corresponding Author (Fahmy Syahputra)

20	Applied Sciences and Information Technology	ABS-188
Design and Development of an Adaptive Multi-Platform Mobile Learning Application Using Chaining Technique for Children with Autism Spectrum Disorder Bagoes Maulana (a*), Harvei Desmon Hutahaean (a), Rosma Siregar (a), Saras Pratama (a), Putra Afriadi (b), Sidik Permadi (a), Dwi Febrina (a), Wira Yudha Pratama (a), Anjelita (a), Muhammad Bahrul Ilmi (a) a) Computer and Informatics Technology Education Department, Faculty of Engineering, Universitas Negeri Medan, Indonesia 20221 *bagoesmaulana[at]unimed.ac.id b) Elementary School Teacher Education Department, Faculty of Educational Science, Universitas Negeri Medan, Indonesia 20221 Abstract Children with Autism Spectrum Disorder (ASD) often face difficulties in adapting socially and behaviorally in inclusive education settings. This study aims to design and develop an adaptive multi-platform mobile learning application using the chaining technique to support behavior modification for children with ASD. The research adopts the Multimedia Development Life Cycle (MDLC) model involving stages of concept design, material collection, system development, testing, and distribution. The application integrates visual, auditory, and interactive components to guide children through step-by-step behavioral tasks. Initial findings indicate that the system effectively supports adaptive behavior formation in daily routines. However, the study is limited by its small sample size and short testing period. The originality of this research lies in the integration of chaining-based behavior intervention into a mobile platform tailored for ASD learners, offering practical value for teachers and parents in implementing inclusive digital learning environments. Keywords: autism spectrum disorder, mobile learning, chaining technique, inclusive education, behavior modification Share Link | Plain Format | Corresponding Author (Bagoes Maulana)

21	Applied Sciences and Information Technology	ABS-190
Application of Geophysical Methods for Geothermal Exploration in Tarutung Nurul Fadhilah, Togi Tampubolon Department of Physics, Faculty of Matematics and Natural Sciences, Medan State University, Indonesia Abstract Geothermal exploration in the Tarutung region utilizes geophysical methods, particularly geoelectric and geomagnetic methods, to obtain a picture of the subsurface structure that supports the identification of geothermal systems. The geoelectric method is used to measure the resistivity of subsurface rocks, which helps map reservoir layers, fractures, and cap rocks important in geothermal systems. Meanwhile, the geomagnetic method utilizes measurements of magnetic field variations at the surface to detect changes in the magnetic properties of rocks due to geothermal activity, thereby identifying magnetic anomaly zones that indicate the presence of geothermal sources. The geothermal system in Tarutung is influenced by a complex interaction between tectonic and volcanic activity, where active fault structures and fractures as well as volcanic activity influence geothermal fluid migration and reservoir characteristics. The application of these two geophysical methods provides accurate and efficient data for geothermal exploration, which plays a crucial role in the development of renewable energy in areas with strong tectonic and volcanic dynamics such as the Tarutung area. Keywords: Geothermal, Exploration, Geophysics, Tarutung Share Link | Plain Format | Corresponding Author (Nurul Fadhilah)

22	Applied Sciences and Information Technology	ABS-195
ANALISIS STRATEGI PEMBANGUNAN BERKELANJUTAN DAN PEMETAAN BERBASIS SISTEM INFORMASI GEOGRAFIS DI KAWASAN GEOPARK KALDERA TOBA KABUPATEN SAMOSIR Mahara Sintong-Sendi Permana-Sahala Fransiskus Marbun-Mhd.Anas Kautsar-Joey Athana Sembiring-Pradipa Nasywa Syukri Universitas Negeri Medan Abstract ABSTRACT The tourism sector contributes significantly to regional and national economic growth. Geoparks are areas of high geological, biological, and cultural value, managed for conservation, education, and sustainable development. One such geopark in Indonesia is the Lake Toba Caldera, whose potential can be maximized through the implementation of the Sustainable Development Goals (SDGs). This program aims to maintain the sustainability of the geopark ecotourism area by preserving biodiversity, geology, and culture. However, the implementation of the SDGs in the Lake Toba Caldera Geopark area has not been optimal. The main challenges include the limited knowledge of the community and local government regarding the SDGs, the lack of financial support from the local government, and low public awareness in protecting the environment. Therefore, this study aims to analyze the implementation of the SDGs program that has been running, develop strategies for the implementation of programs that have not been achieved, and utilize Geographic Information System (GIS) technology for area promotion. The research methods used include field surveys, visual observations, interviews with stakeholders (local government), and secondary data analysis using GIS. The analysis produced an infographic map that facilitates understanding of the region^s potential. With this approach, GIS-based promotion is expected to increase public awareness of the importance of regional sustainability. The results of this research are targeted to produce several outputs, such as a final report, publication in international proceedings, accredited national journals, and copyright of research products. The proposed Technology Readiness Level (TKT) is TKT 3, which includes testing a GIS system prototype for spatial analysis. This research not only provides theoretical contributions but also practical implementation to support the sustainable management of the Lake Toba Caldera Geopark area. Keywords: Geopark- SDGs- Sustainable Development- GIS- Toba Caldera Share Link | Plain Format | Corresponding Author (Mahara Sintong)

23	Creativity, Arts and English in Education	ABS-4
The Production of Mural Artwork with the Theme of Traditional Houses and Traditional Clothing of North Sumatra Ethnic Muslim, Raden Burhan Surya Nata Diningrat, & Mesra The Fine Arts Education Study Program, Faculty of Language and Art, Universitas Negeri Medan, Indonesia Abstract Mural artwork is a form of visual art that has significant potential as a medium for social communication and cultural expression. This research is motivated by the less than optimal activities and processes of introducing North Sumatran culture to early childhood which causes the phenomenon of the younger generation who are more familiar with and like foreign cultures than their own culture. This research aims to create mural artwork with the theme of traditional houses and traditional clothing of North Sumatra in order to optimize the introduction of cultural philosophy to early childhood. The research was conducted at the PAUD BALQIS Early Childhood Education Institution in Deli Serdang Regency. This research is part of a creative research that uses a method developed by referring to 2 activities of the creative process, namely: conceptualization and design development (design), and the implementation or execution process (realization). First, at the planning stage, observations were made on the wall that would be muraled, and the determination of the theme, namely the theme of traditional houses and traditional clothing of the North Sumatra ethnic. then continued with the realization process, namely making initial sketches, final design, wall surface preparation, transferring designs to walls, painting process, finishing and adding details, protective coating, and documentation of the work. Through the creation of this mural artwork, it is hoped that it will foster a sense of love for the cultural diversity that exists in North Sumatra. Keywords: produktion, traditional house, traditional clothing, mural art, North Sumatra Share Link | Plain Format | Corresponding Author (Muslim Muslim)

24	Creativity, Arts and English in Education	ABS-52
Fostering Interpersonal Intelligence Through Collaborative Assessment in Music Ensemble Learning for Elementary Teacher Education Sri Mustika Aulia (a*), Try Wahyu Purnomo (b), Siti Khodijah Lubis (c), Elya Siska Anggraini (d) a) Elementary School Teacher Education of Universitas Negeri Medan, Indonesia 202211 *iieaulia[at]unimed.ac.id b) Elementary School Teacher Education of Universitas Negeri Medan, Indonesia 202211 c) Early Childhood Education of Universitas Negeri Medan, Indonesia 20221 d) Early Childhood Education of Universitas Negeri Medan, Indonesia 20221 Abstract This research is a development research that aims to produce a collaborative assessment instrument based on interpersonal intelligence in music ensemble learning in the Elementary School Teacher Education Study Program. Collaborative assessment aims to provide feedback from teachers and other students on the results of music work or projects designed by a study group. The research model used is 4D which consists of the stages (1) Define, namely formulating empirical and normative foundations in developing assessment instruments, (2) Design, namely designing assessment instrument grids, assessment rubrics and collaborative methods in the assessment process, (3) Develop, namely validating the product as the final stage of the assessment instrument design and the assessment implementation stage, (4) Disseminate, namely the stage of product distribution in wider implementation. The research has produced a valid, practical and effective collaborative assessment instrument so that it has a positive impact on interpersonal skills and becomes an empirical experience in forming student character. Keywords: Collaborative Assessment Instrument- Music Ensemble- Music Education- Elementary School Teacher Education Share Link | Plain Format | Corresponding Author (Sri Mustika Aulia)

25	Creativity, Arts and English in Education	ABS-202
English Language Skills and Global Citizenship among Administrative Staff Nurham Hahsa, Meechai Wongdaeng, and Afifi Lateh Faculty of Education, Prince of Songkla University Abstract This study examines the impact of a professional development program on the English language proficiency and global citizenship competencies of administrative personnel at Faculty of Education, Prince of Songkla University in Thailand. A pre- and post-survey design was employed to assess self-perceived skills and attitudes before and after participation. Results show marked improvement in participants^ confidence in using English, particularly in speaking and listening, and a deeper understanding of cultural diversity and global perspectives. Thematic analysis of qualitative responses suggests the program effectively fostered teamwork, cross-cultural communication, and international awareness. Recommendations include expanding English immersion activities and incorporating structured workshops to further enhance impact. Keywords: English Language Skills- Global Citizenship- Administrative Staff Share Link | Plain Format | Corresponding Author (Nurham Hahsa)

26	Economics, Social and Early childhood Education	ABS-16
Personal Factors as Determinants of Students^ Perceptions of Accounting Learning Complexity Ulfa Nurhayani(a*), Haryani Pratiwi Sitompul(b), Weny Nurwendari (b), Rini Herliani (b), Sondang Aida Silalahi (b) a) Accounting Education Study Program Of Universitas Negeri Medan, Indonesia b) Faculty Of Economic, Universitas Negeri Medan, Jalan Willem Iskandar Medan Estate Abstract This study seeks to explore the relationship between students^ perceptions of the difficulty of accounting courses in the Accounting Education Study Program at Universitas Negeri Medan and their individual characteristics. The individual factors examined include motivation, academic ability, previous learning experiences, and perspectives on accounting classes. Using a quantitative method, the study employed a survey technique by administering questionnaires to 288 students enrolled in accounting classes during the second, fourth, sixth, and eighth semesters. The Partial Least Squares (PLS) approach within the Structural Equation Modeling (SEM) framework was used to analyze the data, utilizing SmartPLS 3.0 software. The findings indicate that all four individual factors significantly influence students^ perceptions of the complexity of accounting courses. These findings provide valuable insights for developing instructional strategies that take into account each student^s unique characteristics to enhance the effectiveness of accounting education.education. Keywords: personal factors, accounting complexity, motivation, academic ability, learning experience, attitude Share Link | Plain Format | Corresponding Author (Ullfa Nurhayani)

27	Economics, Social and Early childhood Education	ABS-26
Accountability in Islamic Educational Institutions from an Islamic Perspective Tapi Rumondang Sari Siregar Universitas Negeri Medan Abstract Amidst the increasing demands for transparency and good governance, the aspect of accountability is one of the important pillars in maintaining public trust in educational institutions, including those based on Islam. This study aims to examine the concept and implementation of accountability applied in Islamic educational institutions. Using a qualitative approach, data were obtained through in-depth interviews with leaders and managers of Islamic educational institutions. Data were analyzed using thematic analysis methods with the steps of transcription, initial coding, theme identification, theme review, and interpretation and drawing conclusions. The results of the study indicate that accountability from an Islamic perspective does not only refer to the obligation of accountability to humans (horizontal), but also to Allah Azza wa Jalla (vertical). The concept of amanah, amar ma^ruf nahi munkar, maslahah ummat, ihsan, ikhlas, and rahmah are Islamic values that form the concept of accountability in educational institutions. This study recommends the integration of Islamic values to strengthen accountability as a basis for developing governance in Islamic educational institutions. Keywords: Accountability, Islamic Educational Institutions, Islamic Accountability Share Link | Plain Format | Corresponding Author (Tapi Rumondang Sari Siregar)

28	Economics, Social and Early childhood Education	ABS-34
Development of E-Module Learning Model Based on 21st Century Skills and Socio-Scientific Issues: Efforts to Strengthen the Pedagogical Competence of Prospective Economics Teacher Students Revita Yuni, Putri Kemala Dewi Lubis, Putri Sari Margaret Julianty Silaban, Roza Thohiri, Nur Adawiyah Harahap Faculty of Economic, Universitas Negeri Medan, Medan, Indonesia Abstract Innovative teaching materials can basically be created by lecturers by utilizing interesting information technology that can be carried and read anytime and anywhere. Moreover, currently students are identical to gadgets (smartphones) that are often carried by students. In addition to innovative teaching materials that utilize information technology, teaching materials are also needed that can provide a deeper understanding to students. 21st century learning emphasizes the integration of technology, the development of critical skills such as critical thinking, creativity, communication, and collaboration (4C), as well as contextual and problem-oriented learning. The importance of developing 21st century skills for students in facing complex challenges in the modern world. Education must be able to produce individuals who are not only academically skilled but also able to adapt, solve problems and innovate. Therefore, there needs to be a learning model that can integrate skills effectively in learning, especially for prospective teacher students who will have an impact on their students later. In addition, socio-scientific issues related to the social context and sustainability will be integrated into the learning materials to provide a deeper understanding to students. Thus, it is hoped that prospective teacher students can prepare their students to become individuals who are not only competent in academics, but also have broad skills and understanding of global issues. This study aims to develop an e-module learning model that can combine 21st century skills and socio-scientific issues in a valid and practical economic learning context. This research is development research (Research and Development) which uses the 5 stages of the ADDIE model, namely analysis, design, development, implementation and evaluation. Implementation of development research which includes (a) needs analysis of the product being developed- (b) planning product design and (c) Implementation and evaluation of e-module learning models based on 21st century skills and socio-scientific issues. The subjects in this research were sixth semester students of the Economics Education study program. The data analysis techniques used in this research are validity and practicality. This module was validated by 2 expert validators, namely a material expert and a design expert. The research results showed that the feasibility test received a very feasible category and the practicality test based on response data from colleagues (team lecturers) and students received a very practical category. Keywords: E-Module- 21st Century Learning Model- Socio-Scientific Issues Share Link | Plain Format | Corresponding Author (Revita Yuni)

29	Economics, Social and Early childhood Education	ABS-35
IMPLEMENTATION OF E-COMMERCE INVESTMENT POLICY IN MEDAN CITY Nasrullah Hidayat, Armin Rahmansyah Nasution, Lucky Satria Pratama, Arwansyah Faculty of Economics, Universitas Negeri Medan Abstract The purpose of this research is to analyze the implementation of e-commerce investment policies in the city of Medan. The type of this research is qualitative descriptive research. Data collection was carried out through structured interviews, observations, documentation studies, and focus group discussions. The key informants selected for the research are the Investment and One-Stop Integrated Services Office, the Cooperatives, Industry, and Trade Office, as well as business actors. The data analysis technique was carried out through the stages of data reduction, data presentation, and conclusion drawing. The results of this study found that the Medan city government has fully supported e-commerce investment policies. This is evident from the regulations that have been made by the government, namely the mayor^s regulation and regional regulation no. 4 of 2024 concerning the provision of incentives and investment facilitation. With that support, it can enhance the growth of e-commerce and startups in Medan City, as well as demonstrate a strong commitment to creating an inclusive and sustainable digital ecosystem. Through pro-investment policies, collaboration with national e-commerce platforms, provision of technological infrastructure, and strategic partnerships, the Medan City Government plays a crucial role in driving the growth of the e-commerce sector and enhancing the local economic competitiveness. Keywords: Policy, Investment, E-Commerce Share Link | Plain Format | Corresponding Author (Nasrullah Hidayat)

30	Economics, Social and Early childhood Education	ABS-37
Evaluation of the Success of Using Learning Management System with ISSM Model for Supplemental Learning Accounting at the Faculty of Economics State University of Medan Choms Gary Ganda Tua Sibarani (a*), Tri Effiyanti (b), Jabal Ahsan (c) a) Faculty of Economics, Universitas Negeri Medan, Indonesia *gary.sibarani[at]unimed.ac.id b) Faculty of Economics, Universitas Negeri Medan, Indonesia trieffiyanti[at]unimed.ac.id c) Faculty of Economics, Universitas Negeri Medan, Indonesia jabalahsan[at]unimed.ac.id Abstract The use of LMS is currently the main key in supporting the learning process other than in the classroom, therefore it is necessary to carry out a comprehensive evaluation to see the extent of satisfaction and usefulness of the use of the LMS. This study evaluates the success of using LMS using the ISSM model developed by Delone and Mclean. The research method used in this research is quantitative by involving all 213 students of the Accounting Department, consisting of two study programs, namely accounting education and accounting science ranging from grade 2022 to 2024 at the Faculty of Economics, Medan State University. The data collection technique uses a questionnaire as the main instrument and the data is analyzed using the PLS (Partial Least Square) method for Quantitative data with SmartPLS. The analysis includes the PLS Algorithm test, Bootstrapping, and Hypothesis testing with p-value and t-stat. This study tested seven hypotheses- the relationship of five main construct variables: information content quality, instructor quality, learner self-regulation, perceived usefulness, and satisfaction with the entire use of the LMS. After the SEM-PLS test, it was found that six hypotheses had a positive and significant effect. (1) instructor quality affects perceived usefulness with a value of 0.317- (2) Instructor Quality affects satisfaction with a value of 0.234- (3) Information content quality affects perceived usefulness with a value of 0.450- (4) Information content quality affects satisfaction with a value of 0.345- (5) perceived usefulness affects satisfaction with a value of 0.191- (6) learner self-regulation affects satisfaction with the use of LMS with a value of 0.154- and the indirect relationship in the 7th hypothesis (7) learner self-regulation affect LMS satisfaction through perceived usefulness with a value of -0.061, means that has negative effect. All hypotheses with p-values are below 0.05, which means all variables have a significant effect. The t-statistics of all variables are above the value of 1.96, which is an average of 3.701. Keywords: Accounting LMS, Delone and Mclean ISSM Model, e-learning Share Link | Plain Format | Corresponding Author (Choms Gary Ganda Tua Sibarani)

Page 1 (data 1 to 30 of 191) | Displayed ini 30 data/page
1 2 3 4 5 6 7 NEXT >>

Powered By Konfrenzi Ultimate 1.832M-Build8 © 2007-2026 All Rights Reserved