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All Journal Journal of ICT Research and Applications TESLA: Jurnal Teknik Elektro INSIST (International Series on Interdisciplinary Research) JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Jurnal Teknosains Kodepena (Kodepena Journal of Technoscience) Jurnal Pengabdian dan Kewirausahaan Jurnal Teknosains Kodepena (Kodepena Journal of Technoscience) Prosiding Seminar Nasional Pemberdayaan Masyarakat (SENDAMAS) Journal of Scientific Insights Exhibition and Seminar on Science and Creative Technology – Al Azhar Proceeding Jurnal Elektronika dan Telekomunikasi
Dwi Astharini
Electrical Engineering Department, Universitas Al Azhar Indonesia, Jalan Sisingamangaraja, Kebayoran Baru, Jakarta, Indonesia 12110
Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Public Health Social Sciences Other

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GUI Design for Comparative Output Signal DFT and DTFT with LabVIEW Astharini, Dwi; Aulia, Tsaura; Wulandari, Putri; Alamtaha, Rahmat; Afisha, Rifqy
International Series on Interdisciplinary Science and Technology Vol. 4 No. 1 (2019)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/ins.v4i1.210

Abstract

An application GUI (Graphical User Interface) is designed as a software simulation to compare the output signal of DFT and DTFT. DFT (Discrete Fourier Transform) and DTFT (Discrete Time Fourier Transform) are part of the digital signal processing. Digital signal processing is an analog signal processing method uses a mathematical technique to perform a transformation or retrieving information in digital form. One of the benefits of digital signal processing is to facilitate the representation of the signal, because the signal in digital form will be more visible, easily processed and has high accuracy. This GUI application designed using LabVIEW from National Instruments.  LabVIEW is a software graphical programming or a block diagram. LabVIEW program known as VI or Virtual Instrument. The input signal in this application is a square signal
Strategi Efisiensi Konsumsi Listrik di RS Pertamina Panorama Balikpapan dengan Metode Fuzzy Logic Romilado, Fither; Effendi, Yunus; Astharini, Dwi
JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI Vol 10, No 3 (2025): September 2025
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/sst.v10i3.4781

Abstract

Hospitals play a vital role in providing promotive, preventive, curative, and rehabilitative healthcare services. The highest electricity consumption in hospitals comes from lighting and air conditioning systems, thus requiring the implementation of an energy efficiency culture and appropriate technology selection to achieve environmentally friendly (green hospital) operations. This study aims to analyze the potential of applying energy efficiency culture and technology selection as well as to recommend strategies for reducing operational costs and developing energy-saving SOPs as part of green hospital practices. The fuzzy logic approach was applied to measure the level of energy efficiency at Pertamina Panorama Hospital Balikpapan, considering technological, electrical, mechanical and operational cost indicators. Data were collected from questionnaires distributed to 70 hospital staff to evaluate how energy-saving culture and technology choices support green hospital implementation. The results show that the adoption of technologies such as BMS, Smart Energy, Smart Material, Smart Water, Smart Waste, IEQ and Resilience & Safety reduced maintenance costs by 10–20%, despite an initial investment increase of 5–15%. The centroid fuzzy logic analysis yielded a crisp value of 84.7%, indicating efficient electricity consumption. The synergy between efficiency culture, modern technology, and cost strategies makes hospitals more energy-efficient, environmentally friendly and sustainable.Keywords - Efisiensi Energi, Fuzzy Logic, Green Building, Green Hospital.
Light-Based Positioning System Using Arduino Assidqi, Nurul Imam; Astharini, Dwi; Hamid, Sofian; Hermawan, Denny; Aribowo, Budi
EXSACT-A Vol 1, No 1 (2023)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v1i1.2286

Abstract

The Light Positioning System (LPS) represents an innovative technology employed for precise object localization by utilizing light as a positional reference. This method encompasses the utilization of light sources, such as LED lights or other visible light emitters, which can be strategically positioned at various orientations and angles. This research centers on the practical implementation of the LPS paradigm through the application of Arduino. Additionally, the study involves the integration of the Kalman filter algorithm within the Arduino framework to enhance the accuracy of sensor data estimations. The LPS implementation employs distinct sensors, namely the Photoresistor LM393, Photodiode LM393, and TF-Luna Lidar. The programming is accomplished using the Arduino Integrated Development Environment (IDE), while the hardware framework is based on the Arduino Mega 2560 microcontroller. In this research, the ESP32 module plays a pivotal role as it establishes a seamless connection between the sensor data and the Blynk platform. This integration empowers effective and comprehensive data monitoring and analysis, facilitating real-time tracking and evaluation of the LPS system's performance. The photoresistor exhibits better reading accuracy compared to the photodiode, as evident from the obtained RMSE values. The KF PR with 16 LEDs has the smallest RMSE value, which is 0,03. The TF-Luna LiDAR sensor readings are more accurate and effective under well-lit conditions as opposed to low-light conditions. The RMSE value at lux 160 is 1,28 , while the RMSE value at lux 2 is 3,32
Product Defect Detection using Image Template Matching with MATLAB Abdillah, Muhammad Hasya; Sabilah, Muhammad Arip Putra; Suherman, Andika; Astharini, Dwi
EXSACT-A Vol 1, No 1 (2023)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v1i1.2344

Abstract

Abstract— In industrial manufacturing processes, ensuring the quality of products is crucial. This paper proposes a system for detecting defects in products using image template matching techniques implemented in MATLAB. The system's primary function is to compare captured images of products with predefined templates to identify potential defects accurately. The method employed in this system is template matching, a well-established approach in image analysis that allows for efficient defect detection. MATLAB, a widely used software tool for image processing, provides the necessary functionality and a robust set of algorithms to implement the proposed system. The experimental results demonstrate the effectiveness of the approach in detecting various types of defects, such as scratches, cracks, and misalignments. This defect detection system offers a reliable and automated solution for improving the efficiency and productivity of manufacturing industries. By enabling early detection and intervention, it contributes to enhancing product quality control and minimizing defective outputs, ultimately leading to cost savings and customer satisfaction. Keywords— Defect Detection; MATLAB; Template Matching; Image Processing
FPGA Implementation of Kalman Filter for Visible Light Wahyudi, Imam; Astharini, Dwi; Gandana, Danny M; Hamid, Sofian; Hermawan, Denny; Aribowo, Budi
EXSACT-A Vol 1, No 1 (2023)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v1i1.2280

Abstract

Visible Light (VL) has received significant attention due to its benefits in energy efficiency, wide bandwidth availability, and resistance to electromagnetic interference. This final project discusses VL utilizing the Kalman Filter (KF) to predict and estimate the position of related data. The development of the VL method is carried out using Xilinx FPGA Arty A7 hardware, and the KF implementation is carried out in a two-dimensional framework with the Linear KF approach. The main objective of this Final Project is to implement VL using Photodetectors (Photodiode and Photoresistor LM393) on FPGA. The use of Xilinx FPGA Arty A7 hardware and Xilinx SDK software provides the flexibility and reliability required for system implementation. The results indicate that the implementation of Xilinx FPGA Arty A7-35T with KF and the use of 16 LED and 8 LED configurations yield relatively accurate estimations. While the Photodiode LM393 (PD LM393) sensor does not exhibit superior results compared to the Photoresistor LM393 (PR LM393) sensor, this research effectively optimizes light measurements by utilizing the sensor and KF algorithm. The Root Mean Squared Error (RMSE) results show that for the system with 16 LEDs, KF with PR LM393 has an RMSE of approximately ). This RMSE value indicates that KF with PR LM393 can provide relatively more accurate estimations. Similarly, for the system with 8 LEDs, KF with PR LM393 has an RMSE of around ). In this case, KF with PR LM393 again provides relatively more accurate estimations. Meanwhile, the RMSE result for 2D KF in this system is approximately ), indicating that the KF estimation has a relatively small error value compared to the actual measurement value. This demonstrates that KF effectively reduces noise and measurement data fluctuations in the LM393 Photodetector system with 16 LEDs.
Design Simulation of Automatic Lifted Bridge System using Arduino Uno Kurniawan, Bambang; Aryadi, Kian; Putra, Dwi; Astharini, Dwi
EXSACT-A Vol 1, No 1 (2023)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v1i1.2301

Abstract

The existence of bridges is needed as a means to connect interrupted paths separated by rivers, ravines, or the sea. On the one hand, the existence of bridges is sometimes an obstacle for large ships whose shipping lanes are blocked by bridges, so a bridge is needed that is able to move up to facilitate shipping to the lane. Usually, this raised bridge system is operated manually by the operator, so it is still inefficient. In this paper, we try to create a prototype design using an Arduino Uno microcontroller that displays an automatic raised bridge system. When a large ship is detected to be passing through the bridge, the system will give a warning that traffic on the bridge will be temporarily stopped with a red traffic light marked and the portal for motorists will be closed and then continued with the bridge open to ships. But if it is detected that there are still vehicles on the bridge, then the system will warn the ship to stop for a moment waiting for conditions or conditions on the bridge to become conducive, and then the bridge opens. After the ship has been detected far away from the bridge, the system and traffic on the bridge will return to normal.
Real-Time Video Filtering Using Python: A Study on Dynamic Video Enhancement Techniques Ramadhan, Fahri; Stirman, Aini Nur Rachimah; Dharmawan, Fauzan; Astharini, Dwi
EXSACT-A Vol 2, No 1 (2024)
Publisher : Universitas Al Azhar Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36722/exc.v2i1.2774

Abstract

Abstract—This paper presents a basic exploration of digital image processing method in representing a color spectrum using Python. Digital Image Processing is a science that moves to create, analyze, and produce information in the form of images with various coloring. The filters used in this paper are Red and Black Frame, Edge Detection, Negative and HSV in Python. The results of this filter show the difference in the resulting color spectrum. By separating the color spectrum, you will get a color output that varies according to the command.Keywords— Image Processing, Filter, Intensity, Color Spectrum.
Analisis Indeks Keberlanjutan Pengelolaan Sampah Pasar Kebayoran Lama Shafira, Rizka; Astharini, Dwi; Noriko, Nita
JURNAL TEKNOSAINS KODEPENA Vol. 6 No. 1 (2025): Jurnal Teknosains Kodepena Volume 6 Nomor 1 Agustus 2025
Publisher : Kodepena (Komunitas Dosen Penulis dan Peneliti Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54423/jtk.v6i1.108

Abstract

Waste management in traditional markets is a major challenge in the context of urbanization and environmental sustainability. This study aims to analyze the sustainability index of waste management in Pasar Kebayoran Lama, Jakarta, using a three-dimensional approach: ecological, social, and economic. The methods used are literature study and assessment simulation based on indicators relevant to national policies, such as Law No. 18 Year 2008. The analysis showed that the overall sustainability index score was 1.5, indicating unsustainable conditions. The ecological aspect scored 1.3, social 1.6, and economic 1.6, reflecting the low effectiveness of waste management, lack of community participation, and not optimal waste-based economic empowerment. The proposed action plan includes increased education, waste segregation and recycling, and the development of a circular economy model. This study recommends cross-sector collaboration and continuous monitoring to realize a more ethical, efficient, and sustainable market waste management.
Analisis Indeks Keberlanjutan Pengelolaan Sampah Pasar Kebayoran Lama Shafira, Rizka; Astharini, Dwi; Noriko, Nita
JURNAL TEKNOSAINS KODEPENA Vol. 6 No. 1 (2025): Jurnal Teknosains Kodepena Volume 6 Nomor 1 Agustus 2025
Publisher : Kodepena (Komunitas Dosen Penulis dan Peneliti Indonesia)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54423/jtk.v6i1.108

Abstract

Waste management in traditional markets is a major challenge in the context of urbanization and environmental sustainability. This study aims to analyze the sustainability index of waste management in Pasar Kebayoran Lama, Jakarta, using a three-dimensional approach: ecological, social, and economic. The methods used are literature study and assessment simulation based on indicators relevant to national policies, such as Law No. 18 Year 2008. The analysis showed that the overall sustainability index score was 1.5, indicating unsustainable conditions. The ecological aspect scored 1.3, social 1.6, and economic 1.6, reflecting the low effectiveness of waste management, lack of community participation, and not optimal waste-based economic empowerment. The proposed action plan includes increased education, waste segregation and recycling, and the development of a circular economy model. This study recommends cross-sector collaboration and continuous monitoring to realize a more ethical, efficient, and sustainable market waste management.
Analisa Kinerja Teknik Modulasi Digital pada Kanal Optik Nirkabel Dwi Astharini; Ary Mayola; Octarina Nur Samijayani; Ary Syahriar
Jurnal Elektronika dan Telekomunikasi Vol. 17 No. 1 (2017)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v17.7-12

Abstract

Transmisi optik nirkabel dengan kecepatan tinggi memiliki berbagai potensi untuk aplikasi jarak pendek terutama untuk komunikasi di dalam ruangan. Tulisan ini memaparkan perbandingan kinerja transmisi FSO menggunakan beberapa variasi skema modulasi. Pengamatan unjuk kinerja terutama dilakukan menggunakan bit error rate (BER). Gangguan turbulensi atmorferik menjadi bagian dari pemodelan kanal log normal yang digunakan dalam simulasi. Modulasi dasar spasial yang digunakan adalah on-off keying sebagai teknik klasik FSO, beserta pulse position modulation yang merupakan variasi spasialnya. Menelaah penggunaan modulasi baseband untuk sistem optik, disimulasikan PSK 2, 4, 8, 16, serta QAM 4 dan 16. Simulasi dengan data ukuran kecil menghasilkan bahwa BPSK dan 4 QAM menunjukkan unjuk kerja terbaik dengan BER rata-rata sekitar 10^-3 pada kondisi gangguan sedang sampai tinggi. Sementara tingkat error pada OOK dan PPM masih di atas 10^-0.5.
Co-Authors Abdillah, Muhammad Hasya Afisha, Rifqy Ahmad Husin Lubis Ahmad Zulkarnaen Aina Sabrina Alamsyah, Rahmadina Alamtaha, Rahmat Amjat Al Baihaqi Andi Iswahyudi Anwar Mujadin Aprilia Tri Purwandari Arizka Arizka Ary Mayola Ary Syahriar Aryadi, Kian Assidqi, Nurul Imam Aulia, Tsaura Auni, Khairul Azmi Azizah Azzahra Azzahra, Azmi Azizah Bambang Kurniawan Budi Aribowo Damar Royyan Saputra Danny M Gandana Denny Hermawan Dharmawan, Fauzan Fadjar Iftikar Fiqri Ibrahim Amien Gandana, Danny M Hamid, Sofian Ibrahim Ibrahim Ibrohim Hasan Imam Wahyudi Indrawan, Imam Wahyudi Indrawan Arifianto Lubis, Ahmad Husin M. Hariomurti Mayola, Ary Moh. Ismail Mohamad Fauzi Radsanjani Muhammad Ismail Nasril Nasril Nasrullah Nasrullah Niken Parwati Nita Noriko Pranata, A.J. Pratondo Busono Putra, Dwi Putra, Geordiano D.K. Putri Wulandari PUTRI WULANDARI Putri Wulandari Rahmat Alamtaha Rahmatia, Suci Raihan Zaky Thamrin Raja P Batubara Ramadhan, Fahri Reudinta Zesha Rifqy Afisha Riny Alfina Riri Safitri Romilado, Fither Rona Regen Sabilah, Muhammad Arip Putra Samijayani, Octarina Nur Shafira, Rizka Sofian Hamid Stirman, Aini Nur Rachimah Subakti, Subakti Suci Rahmatia Suherman, Andika Surya Agam Tanjung, Widya Nurcahayanty Tio Apridinata Tsabitah, Nimah Tsaura Aulia Yaya Suryana Yaya Suryana Yunus Effendi