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All Journal Seminar Nasional Aplikasi Teknologi Informasi (SNATI) Semantik Jurnal Teknologi Informasi dan Ilmu Komputer Seminar Nasional Informatika (SEMNASIF) JOIV : International Journal on Informatics Visualization Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) JURNAL MEDIA INFORMATIKA BUDIDARMA JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI JURIKOM (Jurnal Riset Komputer) Aptisi Transactions on Technopreneurship (ATT) Building of Informatics, Technology and Science Journal Sensi: Strategic of Education in Information System Jurnal Sistem Komputer dan Informatika (JSON) Aiti: Jurnal Teknologi Informasi Jurnal Indonesia : Manajemen Informatika dan Komunikasi Jurnal Ilmiah Sains Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat IT-Explore: Jurnal Penerapan Teknologi Informasi dan Komunikasi Jurnal Indonesia : Manajemen Informatika dan Komunikasi Jurnal DIMASTIK
Theopillus J. H. Wellem
Universitas Kristen Satya Wacana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Physics Social Sciences Other

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PELATIHAN KOMPUTER UNTUK SISWA TK KRISTEN 1 SATYA WACANA SALATIGA MELALUI PERMAINAN EDUKASI ONLINE Yessica Nataliani; Krismiyati Krismiyati; Erwien Christianto; Theophilus Wellem; Anton Hermawan; Agustinus Fritz Wijaya; Imanuel Susanto
Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Vol. 3 No. 3 (2023)
Publisher : Universitas Kristen Satya Wacana Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/jms.v3i32023p405-416

Abstract

This community service activity was carried out to facilitate the needs of the Satya Wacana Christian 1 Kindergarten students in Salatiga as an effort to introduce kindergarten students to computers. Students usually only know cell phones or tablets but rarely use computers. This training activity was attended by kindergarten students with an age range of 5-6 years and was carried out in four stages, namely the planning stage, the preparation stage, the implementation stage, and the evaluation stage. The activity involved a team of lecturers from the Faculty of Information Technology, Satya Wacana Christian University as activity facilitators and three teachers from Satya Wacana Christian 1 Kindergarten. This program was conducted at the Computer Laboratory of the Faculty of Information Technology, Satya Wacana Christian University, which included introducing computer equipment, opening websites, and practicing using a mouse through online educational games. The online educational games used in this activity are mixing colors, counting, getting to know water transportation, getting to know 2D shapes, knowing numbers, and assembling puzzles. The activity went well, where the students could recognize and operate computers, especially using the mouse, and learn through the online educational games.
PERANCANGAN DAN IMPLEMENTASI SISTEM PENDETEKSI DAN PERINGATAN KEBAKARAN BERBASIS IOT MENGGUNAKAN NODEMCU ESP8266 DAN SENSOR API Gabriel Gracia Salindeho; Theophilus Wellem
IT Explore: Jurnal Penerapan Teknologi Informasi dan Komunikasi Vol 2 No 3 (2023): IT-Explore Oktober 2023
Publisher : Fakultas Teknologi Informasi, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/itexplore.v2i03.2023.pp179-191

Abstract

Control and monitoring systems that use the Internet-of-Things (IoT) can be found in everyday life, for example, in smart home applications, smart transportation, and smart cities. IoT-based monitoring of environmental conditions both indoors and outdoors is generally carried out to reduce the risk of unwanted events. One example of an unwanted event is a fire. Fires can occur in houses, office buildings, rice fields, or forests. In order to help provide early warning of a flame that can cause a fire, this study aims to design and implement an IoT-based fire detection and warning system using the NodeMCU ESP8266 and a flame sensor. The sensor used is an infrared sensor that will detect infrared light radiation coming from a fire. The test results show that the system successfully detects the presence of fire up to 50 cm from the fire sensor and can be monitored via thinger.io. Additionally, notifications from thinger.io via e-mail and Telegram to users were successfully executed.
PENGEMBANGAN PERPUSTAKAAN SEKOLAH ANAK TERANG BETHANY SALATIGA Suharyadi, Suharyadi; Koerniawati, Tintien; Gundo, Adriyanto Juliastomo; Sembiring, Irwan; Wellem, Theophilus; Nataliani, Yessica
Magistrorum et Scholarium: Jurnal Pengabdian Masyarakat Vol. 4 No. 2 (2023)
Publisher : Universitas Kristen Satya Wacana Salatiga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/jms.v4i22023p196-206

Abstract

Perpustakaan sekolah dibangun oleh komponen sarana prasarana perpustakaan, pengelola peprustakaan dan kepala sekolah. Perpustakaan Sekolah Anak Terang Bethany Salatiga, membutuhkan sentuhan pengelolaan perpustakan secara profesional serta penerapan Teknologi Informasi. Program pengabdian masyarakat yang dilakukan bertujuan untuk mengatasi permasalahan Sumber Daya Manusia dengan memberikan pelatihan klasifikasi pustaka dan pelatihan pengelolaan perpustakaan berbasis Teknologi Informasi dengan penerapan SLiMS (Senayan Lybrary Management System). Hasil dari program ini Perpustakaan Sekolah Anak Terang Bethany Salatiga lebih mudah dalam penelusuran dan pengelolaan pustaka serta kemudahan anak-anak didik dalam mengakses buku-buku perpustakaan.
PERANCANGAN DAN IMPLEMENTASI ENCODER DAN DECODER CRC-16 BERBASIS TABEL LOOKUP PADA ARDUINO Pantow, Prayogo Pangestu; Wellem, Theophilus
IT Explore: Jurnal Penerapan Teknologi Informasi dan Komunikasi Vol 3 No 1 (2024): IT-Explore Februari 2024
Publisher : Fakultas Teknologi Informasi, Universitas Kristen Satya Wacana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24246/itexplore.v3i1.2024.pp49-62

Abstract

Deteksi kesalahan pada data yang dikirimkan melalui saluran komunikasi sangat penting untuk mendapatkan data yang akurat dan sistem komunikasi yang handal. Salah satu kode yang populer dan banyak digunakan sebagai kode pendeteksi kesalahan adalah Cyclic Redundancy Check (CRC). Penelitian ini bertujuan untuk merancang dan mengimplementasikan encoder dan decoder CRC-16 dengan polinomial 0x8005 pada platform Arduino IoT. Penghitungan nilai CRC-16 dilakukan menggunakan algoritma yang memanfaatkan tabel pencarian. Algoritma berbasis tabel pencarian dipilih karena kecepatannya dalam menghitung nilai CRC dari data masukan. Hasil implementasi encoder dan decoder kemudian diuji menggunakan dua board Arduino yang mengirimkan data secara serial. Hasil penelitian menunjukkan bahwa decoder pada sisi penerima dapat mendeteksi kesalahan pada data yang dikirimkan, dan encoder pada sisi pengirim dapat menghitung nilai CRC dari data masukan dengan benar sesuai spesifikasi kode CRC-16. Waktu yang dibutuhkan encoder untuk menghitung nilai CRC-16 dari data input dengan panjang yang bervariasi menunjukkan bahwa data input dengan panjang 2 karakter (16 bit) dan 128 karakter (1024 bit) masing-masing membutuhkan waktu 0,016 milidetik dan 0,72 milidetik.
Perancangan dan Implementasi Sistem Pemantauan Kualitas Udara berbasis IoT menggunakan Wemos D1 Mini dan Android Prakoso, Alvian Dafa; Wellem, Theophilus
Building of Informatics, Technology and Science (BITS) Vol 4 No 3 (2022): December 2022
Publisher : Forum Kerjasama Pendidikan Tinggi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47065/bits.v4i3.2498

Abstract

Internet-of-Things (IoT)-based monitoring and control systems have been widely used in daily life, for example, in smart cities, smart homes (or home automation), and intelligent transportation applications. One example of the application of IoT in smart cities and smart homes is the air quality monitoring system. Monitoring air quality, both indoors and outdoors, is essential for health. This study aims to design and implement an IoT-based air quality monitoring system. The hardware in this system uses the Wemos D1 Mini board, the MQ-9 gas sensor to measure carbon monoxide (CO) gas levels, and the MQ-135 gas sensor to measure carbon dioxide (CO2) gas levels. An Android-based application is also implemented to access and display the results of air quality measurements by the system stored in the cloud database (Firebase). System testing is carried out using smoke from burning paper at varying distances from the sensors. The system test results show that the implemented system can measure CO gas levels in the room from 7 ppm to 38 ppm. The measurement results for CO2 gas levels in the room are between 200 ppm to 1000 ppm.
Systematic Literature Review: The Role of Artificial Intelligence in Digital Marketing Yusup, Muhamad; Wijono, Sutarto; Manongga, Danny; Sembiring, Irwan; Prasetyo, Sri Yulianto Joko; Wellem, Theophilus
Journal Sensi: Strategic of Education in Information System Vol 10 No 1 (2024): Journal Sensi
Publisher : UNIVERSITAS RAHARJA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33050/sensi.v10i1.3117

Abstract

Artificial Intelligence has given a competitive advantage and can increment competition and benefit or Return on Venture in Computerized Showcasing. This article points to recognize diary sources related to the part of Fake Insights, explanatory strategies, applicabilities, and execution measurements on the part of AI in Computerized Promoting from 2015 to 2022. Based on the incorporation and prohibition criteria outlined, it was established that 8 things related to the article were distributed in 2015 and 2022. This article is organized utilizing the SLR strategy which is characterized as a preparation for recognizing, evaluating and evaluating the all accessible investigation to supply answers to four Research Questions. With Suggestions, and add up to of eleven investigation strategies, seventeen usage and nine execution measurements have been distinguished that can be utilized by analysts for future inquire about the part of Manufactured Insights in Computerized Promoting.
SIMULASI JARINGAN IEEE 802.11AX WIFI 6 MENGGUNAKAN SIMULATOR NS-3 UNTUK PENGUKURAN THROUGHPUT PADA BAND FREKUENSI 6 GHZ Putra, Yeheskiel Mandala; Wellem, Theophilus
Jurnal Indonesia : Manajemen Informatika dan Komunikasi Vol. 4 No. 3 (2023): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jimik.v4i3.298

Abstract

The current generation WiFi technology, WiFi 6/6E, is based on the IEEE 802.11ax standard. The IEEE 802.11ax standard introduces several new features that make WiFi 6 superior to its predecessors, for example, 1024-QAM modulation and 6 GHz frequency band for WiFi 6E. This study aims to study the IEEE 802.11ax WiFi 6 standard, simulate an IEEE 802.11ax WiFi 6 network, and observe the throughput achieved in the 6 GHz frequency band using various payload sizes. The simulation is carried out using ns-3, a network simulator for various network models such as Ethernet, WiFi, and 4G LTE. The network topology used in the simulation consists of an access point (AP) and a client station (STA). The simulation results show that payload size significantly affects the network throughput. Simulations with a payload size of 64 and 1500 bytes, at a channel bandwidth (CBW) of 160 MHz and a guard interval (GI) of 800 ns, produce a throughput of 51 Mbps and 766.536 Mbps, respectively.
SIMULASI SKEMA MODULASI 1024-QAM DAN 4096-QAM PADA SISTEM KOMUNIKASI DIGITAL Ikhsan, Danang Maulana; Wellem, Theophilus
Jurnal Indonesia : Manajemen Informatika dan Komunikasi Vol. 4 No. 3 (2023): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jimik.v4i3.321

Abstract

Quadrature amplitude modulation (QAM) is a modulation scheme used by digital communication systems to obtain high data rates in bandwidth-limited channels. M-ary QAM schemes with M values greater than 256 are currently used by wireless network standards, such as WiFi 6 and WiFi 7 (final standard will be released in 2024), which use the 1024-QAM and 4096-QAM modulation schemes, respectively. With the continuous development of technology for digital communication systems, both wireline and wireless, it is essential to research regarding advanced modulation schemes. This study discusses the simulation of the 1024-QAM and 4096-QAM modulation schemes using MATLAB software to compare the performance of the two modulation schemes in data transmission through the AWGN channel without using an error control code. The simulation results show that 4096-QAM is superior to 1024-QAM but requires higher Eb/N0 and SNR values. The Eb/N0 value required by the 4096-QAM to achieve a bit error ratio (BER) of 10-4 is 31 dB, while the 1024-QAM requires an Eb/N0 value of 26 dB.
SIMULASI SKEMA UNIVERSAL FILTERED MULTI-CARRIER (UFMC) PADA SISTEM KOMUNIKASI DIGITAL Fauzan, Rafi Ardhan; Wellem, Theophilus
Jurnal Indonesia : Manajemen Informatika dan Komunikasi Vol. 4 No. 3 (2023): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jimik.v4i3.340

Abstract

Universal Filtered Multi-Carrier (UFMC) is a multi-carrier modulation scheme that is an alternative to the Orthogonal Frequency Division Multiplexing (OFDM) scheme currently used in 4G communication systems and wireless local area networks (WLAN). The weakness of OFDM lies in the high peak-to-average power ratio (PAPR) value and out-of-band (OOB) emission which can cause interference between carriers. UFMC is one of the schemes used to overcome the weaknesses of OFDM. This research aims to study the performance of UFMC for data transmission on AWGN channel with 256-QAM, 1024-QAM, and 4096-QAM modulation. In addition, 256-point, 512-point, and 1024-point FFTs were also used to see the effect on the achievable bit error rate (BER) and PAPR value. The simulation results show that for all simulated FFT sizes and QAM values, 256-QAM produces the lowest BER value. Using a 1024-point FFT, a BER of 10-3 can be achieved with an SNR of 20 dB. The lowest PAPR value obtained in the simulation is 7.1891 dB.
Measurement and Analysis of Noise Levels from Loudspeakers on Public Transportation in Kupang, East Nusa Tenggara Wellem, Theophilus; Nataliani, Yessica; Manongga, Danny; Hendry, Hendry; Utomo, Darmawan; Timotius, Ivanna K.; Kameo, Daniel D.; Lasso, Aldi; Weku, Winsy C.D
Jurnal Ilmiah Sains Volume 24 Issue 2, October 2024
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/jis.v24i2.54820

Abstract

The government is very concerned about the threshold value of human hearing that causes permanent noise-induced hearing loss (NIHL), such as noise caused by public transportation (bemo) in Kupang. This research aims to increase the awareness of the bemo user in Kupang to prevent hearing loss due to noise from bemo audio devices. Noise measurements due to public transportation are usually carried out outside the vehicle, for example, on the street, but in this study, measurements were carried out inside the vehicle (bemo). Data was obtained from (1) Data on sound intensity in public transport taken manually using a Sound Pressure Level (SPL) meter and (2) Data on the working hours of the drivers taken manually by asking how long they drive in a day. The results of  of each route and the average of  of eight routes showed a sound intensity above the threshold set by the government, i.e., 70 dB. Routes 1 and 3 are bemo routes that need attention because they have maximum sound intensity of more than 100 dB and are included in the Very Loud category. Meanwhile, the other routes are included in the Loud category. Furthermore, the average time a driver stays in a bemo daily is 13.5 hours, which concluded that all drivers are at risk of hearing loss. Therefore, special attention is needed from the government because this can result in driver hearing loss.   Keywords: Bemo; Kupang; Noise-induced hearing loss; Public transportation; Sound intensity
Co-Authors Ade Iriani Adi Setiawan Adriyanto Juliastomo Gundo Agustinus Fritz Wijaya Antika Lorien Anton Hermawan Arthur, Christian Atik Setyanti, Angela Bentar Priyopradono Danang Maulana Ikhsan Daniawan, Benny Daniel D Kameo Danny Manongga Darmawan Utomo Donny Priyadi Edi Suharyadi Erwien Christianto Fauzan, Rafi Ardhan Fra Arsandy Kusuma Sejati Fransiscus Bryan Prasetio Gabriel Gracia Salindeho Hanita Yulia Henderi . Hendry Hindriyanto Dwi Purnomo Ignatius Agus Supriyono Ikhsan, Danang Maulana Ilham Hizbuloh Imanuel Susanto Indrastanti Ratna Widiasari Irwan Sembiring Ivanna Kristianti Timotius Iwan Setyawan Jonathan Putera Perdana Krismiyati Kristoko Dwi Hartomo Lasso, Aldi Luis Geraldo Mauboy Maulana, Aldias Henry Muhamad Yusup Pantow, Prayogo Pangestu Piter Wijaya Prakoso, Alvian Dafa Priatna , Wowon Putra, Yeheskiel Mandala Rafi Ardhan Fauzan Rafly Fernanda Rizky Restu Fauzi Roland Tumbelaka Palar Sri Yulianto Joko Prasetyo Suharyadi Sutarto Wijono Tintien Koerniawati Valen Brata Pranaya Wahab, Nur Haliza Abdul Weku, Winsy C.D Yeheskiel Mandala Putra Yessica Nataliani Yonas Juniantiko Putro