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All Journal IAES International Journal of Artificial Intelligence (IJ-AI) Singuda ENSIKOM Bulletin of Electrical Engineering and Informatics Bulletin of Electrical Engineering and Informatics Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer e-Jurnal Arus Elektro Indonesia Bulletin of Electrical Engineering and Informatics KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol Indonesian Journal of Electrical Engineering and Computer Science Randwick International of Social Science Journal
Suherman, Suherman
Departemen Teknik Elektro, Universitas Sumatera Utara
Humanities Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Social Sciences

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Analisis Klasifikasi Sentimen Mahasiswa Terhadap Strategi Pembelajaran Online Pada Media Sosial Twitter Menerapkan Metode Naïve Bayes Astri Syah Putri; Muhammad Zarlis; Suherman Suherman
KOMIK (Konferensi Nasional Teknologi Informasi dan Komputer) Vol 4, No 1 (2020): The Liberty of Thinking and Innovation
Publisher : STMIK Budi Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30865/komik.v4i1.2568

Abstract

Selama masa pandemi proses pembelajaran ditetapkan oleh pemerintah agar dilaksanakan dengan model daring atau pembelajaran online, hal tersebut membuat seluruh mahasiswa harus menjalani proses yang berbeda dengan pembelajaran sebelumnya ketika bertatap muka langsung di ruang kelas. Mahasiswa memiliki pandangan yang berbeda terhadap strategi pembelajaran online yang sudah dijalani dan membuat sentimen pribadi di media sosial twitter dengan memberikan penilaian yang menurut pengalaman pribadi selama mengikuti proses pembelajaran online sudah berlangsung di kampus tempat mereka menuntut ilmu. Berdasarkan sentimen mahasiswa terhadap strategi pembelajaran online yang disampaikan melalui media sosial twitter pada penelitian ini dilakukan analisis klasifikasi sentimen menggunakan metode naïve bayes. Hasil analisis klasifikasi sentimen mahasiswa yang dilakukan menggunakan metode naïve bayes memperoleh hasil pengkategorian negatif atau positifnya strategi pembelajaran online yang telah diterapkan pada mahasiswa yang menjalani proses pendidikan di perguruan tinggi yang dimana nilai klasifikasi yaitu precision=80%, recall = 80% dan accuracy = 80%.
Increasing transmission control protocol speed by reducing the acknowledgement collision probability Suherman Suherman; Ali Hanafiah Rambe; Norshakila Haris; Anhar Anhar
Indonesian Journal of Electrical Engineering and Computer Science Vol 22, No 1: April 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v22.i1.pp121-128

Abstract

Transmission control protocol (TCP) employs acknowledgement (TCP-ACK) for every transmitted packets to ensure reliable transmission. As a result, it sends the next window packets after receiving the TCP-ACK packet of previous window. This means that the earlier the TCP-ACK packet arrives, the faster the TCP next window transmission and the better the TCP performances. To do so, there should be a special treatment to the transmitted TCP-ACK to fasten next window transmission. This paper proposes a collision probability reduction for the transmitted TCP-ACK packets so that the overall TCP delay reduces. Collision probability reduction can be implemented in many ways. Initially, mathematical analysis is provided to prove that method can work as expected. The mathematic analysis shows that when TCP-ACK collision probability is reduced, the overall TCP delay is also reduced. The proposed method is then implemented in 802.11, 802.16 and complex networks. The NS-2 simulations evaluations for the aforementioned networks and the proposed method proved that collision reductions on TCP-ACK exert average TCP delay reductions about 11.86%, 28.04% and 9.46% subsequently.The proposed method is also applicable for other TCP types.
Design and characteristics assessment of wireless vibration sensor for buildings and houses Suherman Suherman; Fahmi Fahmi; Ulfa Hasnita; Zul Herri
Indonesian Journal of Electrical Engineering and Computer Science Vol 21, No 3: March 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v21.i3.pp1381-1388

Abstract

This paper reports the wireless vibration detector design and characterization for practical applications. System is built by using the ATmega microcontrollers, working on a free license 433 MHz frequency. Hardware characteristics are defined through experimental assessments. Assessment mainly on sensor output and sensor installation characteristics. As results, hardware is working as expected, where vibration level achieves at most 13% detection for 12 g vibration source. The vertical axis of the MPU6050 vibration detector results 87.5 times higher detection than in horizontal axis. Detected vibration increases from 1.03 g to 2.61 g when source-sensor distance is shortened from 10 cm to 2 cm. The aluminium sheet as sensor pad causes detection of 8.69 times higher than on ceramic pad. The lower the detection period the better the detection amplitude. However, the lower the period, the higher the consumed power. Microcontroller sleep mode is not suitable for short period detection. The node-based data validation to avoid transmitting false detection is not influencial for short period detection.
Embedding the three pass protocol messages into transmission control protocol header Suherman Suherman; Deddy Dikmawanto; Syafruddin Hasan; Marwan Al-Akaidi
Indonesian Journal of Electrical Engineering and Computer Science Vol 22, No 1: April 2021
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v22.i1.pp442-449

Abstract

Transmission control protocol provides reliable communication between two or more parties. Each transmitted packet is acknowledged to make sure successful deliveries. Transport layer security protocols send security information exchange as TCP loads. As results, the handshaking stage experiences longer delay as TCP acknowledgement process has already been delay prone. Furthermore, the security message transfers may have their own risks as they are not well protected yet. This paper proposes TCP-embedded three pass protocol for dynamic key exchange. The key exchange is embedded into TCP headers so that transmission delay is reduced, and message transfer is secured. The proposed protocol was assessed on self network by using socket programming in lossless environment. The assessments showed that the proposed protocol reduced three-pass protocol message transfer delay up to 25.8% on lossless channel. The assessment on security also showed that TCP-embedded three pass protocol successfully secured each transmitted TCP load using a unique key; that is much securer than the compared method.
Design of solar cell using mirror, cooling, double axis, and solar tracking Yulianta Siregar; Mai Kai Suan Tial; Yopi Fernando Soarez Purba; Suherman Suherman; Soeharwinto Soeharwinto
Indonesian Journal of Electrical Engineering and Computer Science Vol 28, No 3: December 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v28.i3.pp1297-1308

Abstract

Fossil energy sources are dwindling. It is necessary to develop alternative energy sources for future energy. The solar cell is an alternative energy that can be used in Indonesia. The current challenge is utilizing solar panels for the best possible power production. This research gives the solution to design an increase in solar cell output power by using mirrors, cooling, and a double-axis solar tracking control system. The results show that using a mirror, cooling, and double-axis solar tracking produces optimal output power with a current and power are 2.43 amperes and 40.3 watts, respectively. Meanwhile, several factors can affect this solar panel's efficiency. Specifically, the amount of solar radiation that the solar panel can receive depends on the climate on the day and location of the research and the solar panel's dimensions.
Vehicle detection system based on shape, color, and time-motion Afritha Amelia; Muhammad Zarlis; Suherman Suherman; Syahril Efendi
IAES International Journal of Artificial Intelligence (IJ-AI) Vol 12, No 3: September 2023
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijai.v12.i3.pp1070-1082

Abstract

Vehicle detection application can assist in-vehicle surveillance functions and have implications for various fields. A vehicle can be identified through the license number attached to its license plate, the color and its shape. Vehicle detection can make use of multimedia sensors so that the design and detection performances can be optimal. Sensor performances are influenced by factors such as the number of multimedia sensors, sensor placement, sensor positioning, and schemes in case of system failure. This study makes use of multimedia sensors with cameras equipped by a phase detection auto focus (PDAF) technology which is like a pair of eyes to see an object. This study analyses 134 vehicles with number detection and various colors to see the effect on the detection and recognition processes. The cars were passed through the camera 10 times at a speed of 10-15 km/hour with various camera distances and positions. Various values and depths of the images were generated. The farther the distance the higher the disparity values. For maximum distance of 50 m, disparity is 6.20×106 and image depth is 16.88×109. Vehicle color influences detection with orange has the best accuracy, but the gray has the largest path error value.
Co-Authors Abdul Muin Nasution Al Khowarizmi Ali Hanafiah Rambe Anhar Anhar Astri Syah Putri Bakhtiar Bakhtiar Deddy Dikmawanto Efendi, Syahril Fahmi Fahmi Mai Kai Suan Tial Marshal Andrea Hutabarat Marwan Al-Akaidi Muhammad Mulia Maulana Muhammad Rusdi dan Afritha Amelia - Muhammad Zarlis Muhammad Zarlis Muhammad Zarlis Norshakila Haris Rizqi Eka Putri Sinulingga, Emerson Pascawira Soeharwinto Soeharwinto Syafruddin Hasan Ulfa Hasnita Yopi Fernando Soarez Purba Yulianta Siregar Zul Herri