Prosiding Seminar Nasional Teknoka

Pembangkit Listrik Menggunakan Generator Termoelektrik pada Dinding Model Bangunan

Rifky — 2024-12-27

This research was initiated by the idea of making building materials and/or building components/parts into sources of electrical energy, especially on the roof and walls of buildings. Building roofs and walls have the potential as a means of utilizing solar energy into electrical energy with a thermoelectric generator (TEG) converter. Therefore, the aim of this research is to obtain the performance of thermoelectric generators with series and parallel circuits as power generators on the walls of building models. The research methodology used is experimental which begins with designing research equipment consisting of a building model frame and a thermoelectric system arrangement. In this research, a series and parallel TEG circuit was compared. Both sets of TEG systems have aluminum attached to absorb heat from the sun on the hot side of the TEG and a water block made of aluminum is attached to the cold side of the TEG. Styrofoam is attached to the surrounding sides between the TEG modules as a thermal insulator. The parameters in this research consist of independent variables, moderator variables and dependent variables. The independent variables are the temperature of the hot side of the TEG and the temperature of the cold side of the TEG. The moderator variables are good water temperature, water discharge, water temperature entering the waterblock, water temperature leaving the waterblock. Meanwhile, the dependent variables are electric current strength, electric voltage, electric power, and TEG efficiency. The research results showed that the maximum electric current was 0.54 A and the maximum electric voltage was 0.08 V. The maximum electric power as output power from the TEG system was 0.0432 W and the average thermoelectric efficiency was 4%.

Hibridisasi Sistem Photovoltaic dan Thermoelectric Generator sebagai Konverter Energi Cahaya dan Termal Surya Menjadi Energi Listrik

Rifky — 2024-12-27

Solar energy is energy that is classified as new and renewable energy. Utilization of solar radiation energy into clean electrical energy through solar panels. This study uses solar panels that are integrated with thermoelectric modules. This study aims to improve the performance of solar panels that have been hybridized with thermoelectric generators arranged in parallel. The method used in this study is experimental, starting with the design and manufacture of research tools. The research tool is a model of a building whose roof has a slope of 30^o and is equipped with a hybrid system consisting of a set of solar panels, a thermoelectric generator, and a cooling system that allows the thermoelectric generator to be cooled. The hybrid device includes two different systems. The first system, a solar panel with a thermoelectric generator, is assembled using a separate rack, so the solar panel with a thermoelectric generator is located on a separate rack. The second system, solar panels and thermoelectric generators are assembled into an integrated circuit on the same rack. The variables measured in this study are the intensity of sunlight, ambient temperature, solar panel temperature (top and bottom), water temperature, wind speed, humidity, thermoelectric generator temperature, open circuit voltage (Voc), maximum voltage, short circuit current (Isc), and maximum current. The research results show that the efficiency of hybridization with a combined rack system has an average of 18.3%, while with a separate rack system the efficiency is lower with an average of 14.7%. Based on this, hybridization using a fused rack system is more efficient than a separate rack system.

Kajian Awal Penerapan Reverse Engineering pada Desain Brace Kifosis

Finny Pratama Putera — 2024-12-27

Kyphosis is a physical disorder that occurs in the human spine. This symptom is characterized by an abnormal curvature of the spine. For this reason, one of the healing therapies is needed, namely a kyphosis brace. This brace is designed and made by applying the reverse engineering method. The design begins with a scanning process using a 3D scanner. Then continued with the process of redrawing the body shape with reference to the image from the 3D scanner results. This redrawing process uses Autodesk Fusion software with various features including modify edit form, modify subdivide, modify merge edge, and symmetry. A kyphosis brace design is produced that can be continued to be produced to the next stage by 3D Printer.

Analisa Pengaruh Modifikasi Pemasangan Solenoid Valve Pada Mesin Chiller Di Kantor BKN Pusat

Rulan Fazriawan — 2024-12-27

The air conditioning machine used at Head office BKN is air-cooled chiller machine. This chiller machine works by utilizing a vapor compression cycle. The four main components in the vapor compression cycle are: compressor, condenser, expansion valve and evaporator. The vapor compression cycle will run repeatedly as long as the chiller machine is activated. The problem with this cycle is that when the chiller machine is deactivated, the liquid refrigerant (R134A) will return to the compressor, which can cause leaks/clogging. To keep the chiller in normal condition, a solenoid valve is installed between the evaporator flow and the compressor. A solenoid valve is an electromagnetic valve that functions to control the flow of air or water. In this research, tests were carried out on chiller machines that had solenoid valves installed and those that had not been installed. The results of the research are that chiller machine compressors that have solenoid valves installed have a more stable temperature. Life time of a compressor with a stable temperature is longer

Rancang Bangun Robot Pemungut dan Pelontar Bola sebagai Sarana Pendukung Pelatihan Atlet Penjaga Gawang Permainan Futsal

Akhmad Rizal Dzikrillah — 2024-12-27

Goalkeepers need to practice their abilities in protecting the goal. Coaches often use ball throwing machines to train goalkeepers because the machine's throwing power tends to be stable and more controllable than humans. The current ball throwing machine still requires human assistance to pick up the ball from the floor, making the machine still very dependent on humans in picking up the ball. This research aims to design a ball throwing machine that has the additional capability of being able to pick up the ball from the floor and then throw it into the goal. By using rotating rubber cylinders, futsal balls that are on the ground can be picked up by the machine and then pushed to the throwing wheel. The torque and high rpm motor on the throwing wheel is capable of throwing the ball up to a distance of 4 meters. By using a combination of 4 omni wheels, a ball throwing machine can be built that is capable of moving with 3 degrees of freedom, namely forward-backward, turning right-left, and sliding right-left.

Perancangan Sistem Solar Tracker Single-Axis Berbasis ANFIS

Farhan Saumi Abdillah — 2024-12-27

Static solar panel systems have limitations in optimally capturing energy due to the sun's continuously changing position throughout the day. This study aims to design a single-axis solar tracking system on the altitude axis using the Adaptive Neuro-Fuzzy Inference System (ANFIS) method through MATLAB software. The dataset, consisting of time variables (month, day, hour, and minute) as input and the sun's altitude angle as output, was obtained from the timeanddate.com website. The ANFIS processing focused on minimizing error in the form of Root Mean Square Error (RMSE). The results showed that the ANFIS approach achieved an RMSE of 0.51 for training data and 0.56 for testing data. This system can accurately predict the sun's altitude angle, supporting the development of single-axis solar tracking systems.

Pengaruh Arah Datang Cahaya Matahari terhadap Kinerja Sistem Photovoltaic

Nur Rohman — 2024-12-27

Building as a source of energy is not something extraordinary, as in BIPV (building-integrated photovoltaic) technology. Likewise, making buildings a NZEB (net zero energy building) has become a necessity in the context of saving energy use. One energy converter that has been used in buildings is PLTS or solar cells, which is a power plant that converts solar radiation into electrical energy (photovoltaic system). The conversion process is influenced by the direction of sunlight coming to the position of the solar cells that are placed on the roof of the building. This study aims to determine the effect of the direction of sunlight on the performance of solar cells, so that it is obtained from the right direction of sunlight. Solar cells are exposed to the north, east and west. The input parameters for each direction are the intensity of solar radiation, air humidity, wind speed, air temperature, upper side temperature and lower side temperature of the solar cell. Meanwhile, the resulting output parameters are electric voltage and electric current. The results showed that the north direction without cooling produced a total output power of 666.59 W and an average efficiency of 13.54%, for those using the cooler produced a total output power of 737.71 W and an average efficiency of 14.16%. East direction produces a total output power of 454.81 W and an average efficiency of 11.51%, for those using the cooling system it produces a total output power of 542.25 W and an average efficiency of 13.90%. West direction produces a total output power of 340.33 W and an average efficiency of 13.22% for those using a cooling system resulting in a total output power of 550.72 W and an average efficiency of 13.29%. The highest performance of solar cells is obtained from solar cells that are placed towards the North using a cooler where the total output power is 737.71 W and an average efficiency of 14.16%, and for without a cooling system the total output power is 666.59 W and the average efficiency is 13.54%.

Rancang Bangun Sistem Website Jago-Investasi Sebagai Pembelajaran Berinvestasi Mahasiswa Uhamka (Fakultas Ekonomi Dan Bisnis)

Rifqi Favian Hibatullah — 2024-12-27

By studying investment, it will make a significant impact on future economic development, both or individually. Even so, there are not a few students who are less fond of and active in studying investment because of system that making students easily distorted by other content. With advances technology, using website as learning media is a powerfull way to attract students to study investment materials. “Jago-Investasi” website aims to develop investment skills, especially for stundents of Faculty of Business and Economy Universitas Muhammadiyah Prof. Dr. HAMKA (UHAMKA), so that students can easily take advantage of this website as learning material that focuses on investment without distortion while studying materials. The Design method used in this design is waterfall, there are four stages required, namely Requirements Analysis, System Design, Implementation and Testing. With the "Jago-Investasi" website, the result provided is a learning platform for students to access materials related to investment with achieving a success rate of over 70%.

Rancang Bangun Pembimbingan Akademik Skripsi Berdasarkan Antrian Reservasi

Ira Kumalasari — 2024-12-27

Student thesis guidance is the final stage in the process of completing a Bachelor's degree at the University level. During the thesis process, students are required to be guided by lecturers who have qualifications relevant to the title of their thesis. The large number of guidance provided to lecturers, and the limited space to receive students, requires an application to regulate the use of rooms and thesis guidance. Therefore, an application is needed that can accommodate the thesis guidance process and room use. The student thesis guidance application uses the First In First Out (FIFO) algorithm and is integrated with the Thesis and Final Project Information System (SISINTA) and the Administration Information System (SIADMIN). The waterfall development method used includes needs analysis, design, implementation, and testing. This application supports reservation, verification, monitoring, and scheduling features. The application can function 100% according to needs and can be used to increase the efficiency and transparency of the thesis guidance process.

Analisis Klasifikasi Tingkat Kesehatan Mental pada Mahasiswi Akhir dalam Menempuh Tugas Akhir Menggunakan Algoritma Support Vector Machine Studi Kasus: Universitas Darussalam Gontor

Widya Kurniawan — 2024-12-27

Overall health depends on mental health or psychological well-being. Mental and physical well being are equally vital. One in two young people under the age of 25 will experience mental health issues at some point, and 75% of mental illnesses begin before the age of 25. Female university students are among those at the highest risk for mental health issues. Typically, students in their early and final semesters experience a high level of academic anxiety. One of the main factors causing psychological distress in students is the final project or thesis. This study aims to classify mental health levels, namely stress and anxiety, by training a classification model that makes use of the Support Vector Machine algorithm. The dataset used in this study is derived from a questionnaire distributed to final-year female students working on their thesis. The dataset consists of 249 records and is divided into two datasets for stress and anxiety classification. The results of this study show the highest accuracy in the stress classification dataset using the RBF and polynomial kernels, reaching 68% with the RBF kernel at gamma 1 and C 100. Meanwhile, the highest accuracy in the anxiety classification dataset reached 50% achieved with the polynomial kernel at degree 3 and C 100. The application of the best model indicates that the most influential features in the Stress and Anxiety datasets are Literature Review, Support System, and Analysis Method. The obtained accuracy can be used as a standard for upcoming studies using more complex data.

Perbandingan Tingkat Akurasi Algoritma Naïve Bayes dan Support Vector Machine Dalam Analisis Sentimen Pengguna Aplikasi ShopeePay Pada Google Play Store

Hilmi Ammar — 2024-12-27

This research aims to analyze user sentiment towards the ShopeePay application using the Naïve Bayes and SVM algorithms with data obtained through web scraping. Of the 1500 data obtained through scraping, 63 empty data were removed in the cleaning process, leaving 1437 data. This data was then divided into a training set (1149 data) and a test set (288 data). The results showed that the Naïve Bayes algorithm achieved an accuracy of 84.38%, a precision of 79.73%, a recall of 88.72%, and an F1-score of 83.99%, while the Support Vector Machine (SVM) algorithm achieved an accuracy of 80.56%, a precision of 84.07%, a recall of 71.43%, and an F1-score of 77.24%. Overall, Naïve Bayes performed better than Support Vector Machine, especially Naïve Bayes was superior in detecting positive sentiment, while SVM was better in detecting negative sentiment. Data visualization shows that out of 1437 users, around 52.7% gave positive reviews and 47.3% negative reviews, with a diverse rating distribution from users. Based on this distribution, the ShopeePay application user experience can be categorized as predominantly positive, with a difference of 5.4% indicating the difference between 52.7% positive reviews and 47.3% negative reviews from ShopeePay application users.

Analisis Komunikasi Platform Internet of Things Aplikasi Blynk

Puji Utami Rakhmawati — 2024-12-27

The development of the Internet of Things (IoT) has led to the birth of various platforms that enable real-time management and control of devices. One of the prominent platforms is Blynk, an application that provides two-way communication between IoT devices and users through mobile applications. This study aims to analyse the communication mechanism in the Blynk application, including the protocols used, the efficiency of data transmission, and the level of security applied. Through this study, it is analysed how Blynk communicates with various microcontroller devices such as ESP32 and ESP8266 using TCP/IP, HTTP, and MQTT protocols. In addition, this study also evaluates the level of data encryption through SSL/TLS protocols to ensure communication security in an IoT environment. By conducting experiments on IoT devices connected through the Blynk network, this research found that Blynk is able to provide responsive and secure communication, with minimal bandwidth consumption.

Analisis Clustering Kasus Bunuh Diri di Jawa Tengah dengan Menerapkan Algoritma K-Means

Widya Kurniawan — 2024-12-27

Suicide is a deliberate act intended to end one’s life. In Indonesia, this phenomenon remains prevalent and is influenced by various factors, such as psychological conditions, economic pressures, social issues, and environmental factors. This study aims to identify patterns of suicide cases using Clustering techniques, with data sourced from the Semarang and Boyolali Police Departments. The three main variables analyzed are age range, suicide method, and location of the incident. The CRISP-DM approach is applied for data processing, and the K-Means algorithm is used to group relevant data based on these variables. A Silhouette score of 84% indicates a good separation between clusters. Visualization with Principal Component Analysis (PCA) is used to map the clusters more comprehensively. The most vulnerable group to commit suicide is individuals in the productive age range, who tend to use hanging as the method and do so in private homes. This study is expected further insights into the suicide phenomenon in Indonesia.

Awareness Cybercrime Phishing Email Menggunakan Secure Socket Layer Sebagai Interpretasi Information Security

Kotim Subandi — 2024-12-27

Email phishing is a fraudulent technique used by cybercriminals to obtain sensitive information through emails that appear legitimate but have malicious purposes. Information security has become a crucial aspect in the increasingly developing digital world, especially along with the increasing threat of cybercrime, such as email phishing. In this context, implementing Secure Socket Layer (SSL) is one solution to increase awareness and mitigate risks against phishing attacks. SSL, which is a security protocol for data encryption, can help protect digital communications by authenticating servers and encrypting data sent, thereby reducing the potential for misuse of personal data sent via email. This research aims to examine the role of SSL in providing protection against email phishing and increasing user awareness regarding the importance of information security in the use of digital technology. Through an information security interpretation approach, this study suggests that SSL can serve as an effective barrier in reducing the risk of phishing attacks and increasing the level of user trust in the emails received. Therefore, it is important for individuals or organizations to understand and apply information security principles such as the use of SSL to maintain the integrity and confidentiality of data exchanged online.

Analisis Keamanan Jaringan Wifi di MI Inwanul Huda

Arif Nur Iman — 2024-12-27

This study aims to analyze the level of Wi-Fi network security at MI Inwanul Huda using quantitative methods, with a technical network testing approach and user surveys. The test results show that the Wi-Fi network at MI Inwanul Huda has several security gaps, including the use of suboptimal WPA2 encryption, weak passwords used, and device firmware that has not been updated. The device configuration evaluation also found that the firewall had not been properly activated, and some devices used default password settings that were vulnerable to exploitation. A survey of 30 network users showed that 70% of users did not understand basic network security measures, while 65% used the same password for various services. This indicates low user awareness of network security. Recommendations proposed include improving technical security through the implementation of WPA3, regular device updates, and user education regarding network security practices. With these steps, it is hoped that the Wi-Fi network at MI Inwanul Huda can support technology-based learning more safely.

Analisis Antarmuka Pengguna Dalam Sistem Surat Disposisi Online Melalui Evaluasi Heuristik

Herman Fauzi — 2024-12-27

organizations, one of which is Muhammadiyah University, Prof. DR. HAMKA to switch to a digital mailing system. One form of innovation is the online letter disposition system, which enables the process of receiving, distributing and managing letters more quickly, efficiently and transparently compared to manual methods. This system reduces dependence on physical documents, thereby reducing the risk of document loss and speeding up the flow of communication between work units. However, for this system to be effective and comfortable to use, the usability aspect is an important key, because users expect ease in operating each feature. This research focuses on evaluating the usability of the online disposition letter system through a heuristic approach, to identify areas that still require improvement. The evaluation results show that although this system already has a relatively consistent interface structure, several features still need improvement, especially in the aspects of dashboard interactivity, display consistency, and flexibility in mail management. It is hoped that the recommendations resulting from this research can serve as a guide for developers in improving user experience, so that this system is able to support organizational operations more optimally.

Perancangan Dan Implementasi Sistem Point Of Sales (POS) Berbasis Web Menggunakan Framework Laravel 11 (Studi Kasus Toko Umkm Nasution)

Razman Rifany — 2024-12-27

Toko Nasution, a small and medium-sized enterprise (SME) in the retail sector, faces challenges in transaction recording and data management using conventional methods, which pose risks of data loss and difficulty in integrating branch operations. The proposed solution is the implementation of a web-based POS system using Laravel 11. The system is designed using the prototype method and employs Unified Modeling Language (UML) for system design. The research began with interviews with the store owner, followed by designing a prototype using Balsamiq 3, which was tested and evaluated by the SME owner. After the prototype was approved, coding and implementation were carried out, followed by Alpha and Beta testing using the black-box method to ensure the system's functionality. The implementation results in reduced data loss risks, easier data-driven decision-making, improved operational efficiency, and increased customer satisfaction. The system also manages data in real-time, and the POS system handles transactions smoothly.

Perancangan UI/UX Aplikasi Audio Autonomous Sensoric Meridian Responses (ASMR) Untuk Penderita Insomnia Dengan Metode Design Thinking

Ami Wulandari — 2024-12-27

It is undeniable that technology is developing very rapidly, including in the field of information technology which has expanded to various sectors including the health sector. There is an openness of opportunities to handle problems by overcoming various problems through the use of mobile-based systems. One of them is by creating an application to overcome insomnia. This research aims to design the optimal Autonomous Sensoric Meridian Responses (ASMR) Audio UI / UX to overcome insomnia by applying the Design Thinking method, where there are 5 steps, namely, empathize, define, ideate, prototyping, and testing. Data collection is carried out using observation methods, interview psychologist discussion methods, and interview methods for 6 respondents to explore user problems. The results of usability testing using maze.co show a report value of 93 with 6 respondents, while through the questionnaire a value of 85 grade A, was obtained with 10 questions from the System Usability Scale (SUS). From the two testing methods, it was concluded that the Hoamz application prototype design has met user needs.

Perbandingan Algoritma Naive Bayes Classifier dengan K-Nearest Neighbor (K-NN) Pada Ulasan Aplikasi Youtube Di PlayStore

Azmi Ulwan Dasuki — 2024-12-29

Youtube is an application that is still widely used today where Youtube users can watch and post various types of videos ranging from entertainment, news, and insights for free. With the large number of Youtube application users, more and more people are giving comments ranging from positive to negative comments on the Youtube application on the Google Play Store. The purpose of this study is to analyze the sentiment of Youtube application users based on reviews on the Google Play Store. This study went through the stages of data extraction, data labeling, text preprocessing, and also the classification of the Naive Bayes Classifier and K-NN algorithms. After going through the Naive Bayes Classifier and K-NN classification stages, namely the K-NN algorithm produced 81,26% with a precision value of 83,29% and a recall value of 96,29% while the Naive Bayes Classifier algorithm only produced an accuracy value of 78,24%, precision of 82,83% and recall of 92,43%. This means that from the results of the sentiment analysis, the K-NN algorithm is superior to the Naive Bayes Classifier algorithm and public opinion towards the YouTube application is more negative than positive.

Transformasi User Interface Website OLU Mobile Apps: Optimalisasi UI/UX Berbasis Design Thinking

Firdaus Firmansyah — 2025-01-02

This research focuses on the transformation of Online Learning Uhamka (OLU) online learning website into a mobile application to overcome accessibility and display constraints that users often complain about on mobile devices. Through the application of the Design Thinking method which includes the stages of empathy, problem formulation, ideation, prototype development, and testing, this research seeks to design a responsive and user-friendly application. The UI/UX solution developed is based on user needs analysis, so that the application can be used comfortably on Android and iOS devices. By providing key features, such as assignment collection, attendance, and material access, the app is expected to improve the limitations of the website version and have a positive impact on users' learning effectiveness and experience in the context of online learning.