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Forecast of COVID-19 Cases in Indonesia with the Triple Exponential Smoothing Algorithm Ruliyanta Ruliyanta; Endang Retno Nugroho
Jurnal Ilmiah Giga Vol 23, No 2 (2020): Volume 23 Edisi 2 Tahun 2020
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v23i2.933

The Coronavirus (SARS-CoV-2), also known as COVID-19, has brought a worldwide threat to the living. The whole world is making extraordinary efforts to combat the spread of this deadly disease in terms of infrastructure, finances, data sources, protective equipment, life risk treatment, and several other resources. Artificial intelligence researchers focus their knowledge of expertise on developing mathematical models to analyze this epidemic situation using shared national data. To contribute to the welfare of the living community, this article proposes to utilize the Triple Exponential Smoothing algorithm to predict the development of COVID-19 throughout the country by utilizing real-time information from the Task Force for the Acceleration of Handling of Coronavirus Disease 2019 in Indonesia. Based on forecasting results, in Indonesia by the end of 2020, COVID-19 will continue to grow significantly, the number of confirmed COVID-19 people is 386,571 people with a death toll of 15,622.

Rancang Bangun Antena Mikrostrip Pattch Rectangular Array 4x1 pada Frekuensi 1800 MHz-2300 MHz Ruliyanta Ruliyanta; Endang Retno Nugroho
Jurnal Ilmiah Giga Vol 24, No 1 (2021): Volume 24 Edisi 1 Tahun 2021
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v24i1.1144

4G network is a technology that is currently being developed, known as LTE or 4G. An antenna microstrip for 4G technology is used in this paper. The antenna designed to resonate at a frequency of 1800 MHz-2300 MHz. The antenna design will use FR-4 for its substrate which functions as a dielectric for the antenna. The design is done using the help of CST Studio Suite 2014 software and NI AWR Design Environment v.12 to get the desired antenna characteristics through simulation. From our research we obtained the antenna characteristics such as return loss, VSWR (Voltage Standing Wave Ratio), gain, and bandwidth. In this research, a 4×1 patch rectangular microstrip array antenna has been designed and built that works at a frequency of 2.05 GHz for 4G technology. The antenna design uses the FR-4 for its substrate which functions as a dielectric for the antenna. The design is carried out with the help of CST Studio Suite software to obtain the desired antenna characteristics through simulation. From the research results obtained antenna characteristics such as return loss of -25.225 dB. VSWR (Voltage Standing Wave Ratio) of 1.15, the gain of 3.1 dBi, and bandwidth of 500 MHz with a 4×1 rectangular array antenna design.

TRAIL EULER MINIMAL DI DALAM GRAF BERARAH YANG TERBOBOTI Siti Julaeha; Murtiningrum Murtiningrum; Rida Novrida; Endang Retno Nugroho
JURNAL ISTEK Vol 5, No 1-2 (2011): ISTEK
Publisher : JURNAL ISTEK

Show Abstract | Download Original | Original Source | Check in Google Scholar

Suppose G is a Eulerian directed graph with an edge labeling. In this paper will discuss the literature studies an algorithm to construct Euler trail that starts at a node r with the lexicographic minimum label among all Euler trail that starts node r is.

Perancangan Sistem Komunikasi Kabel Laut (SKKL) Fiber Optik Link Surabaya-Bawean Endang Retno Nugroho; Rianto Nugroho
Jurnal Ilmiah Giga Vol 25, No 1 (2022): Volume 25 Edisi 1 Tahun 2022
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v25i1.1663

Abstract. Internet network is an important requirement in the digital era. Indonesia is listed as the country with the highest data traffic growth in the world in 2016. To meet the needs of this data traffic, network access is needed. Indonesia has a geography that mostly covers the ocean. The islands lined up from Sabang to Merauke up to tens of thousands. This large number of islands is a problem in building communication infrastructure. Bawean Island is one of the islands in Indonesia with an area of 197 km2 with a population of more than 100,000 people in 2021. The pre-existing communication access is communication with VSAT using Satellite and Radio Wave Communication. Both types of communication have limitations in bandwidth capacity. In this research, it is proposed to design a Marine Cable Communication System (SKKL) for data access on Bawean Island. Data traffic is sent via optical fibre from the city of Surabaya to the island of Bawean which is 235 km away. In this design, we use a single-mode G.655 cable type and 5 optical amplifiers of the EDFA type. The results of the design show that the power link budget is -9.525 dBm, SNR 25.35 dB, Q-factor 9.26, and BER 1.009×10^-20. Abstrak. Jaringan internet merupakan suatu kebutuhan penting di era digital. Indonesia tercatat sebagai negara dengan pertumbuhan trafik data tertinggi di dunia pada 2016. Untuk pemenuhan kebutuhan trafik data ini dibutuhkan akses jaringan. Indonesia memiliki geografis yang sebagian besar meliputi lautan. Pulau-pulau berjajar dari Sabang sampai Merauke jumlahnya hingga puluhan ribu. Jumlah pulau yang banyak inilah yang menjadi permasalahan dalam membangun infrastruktur komunikasi. Pulau Bawean adalah salah satu pulau di Indonesia dengan luas 197 km2 dengan penduduk lebih dari 100.000 jiwa pada tahun 2021. Akses komunikasi yang sudah ada sebelumnya adalah komunikasi dengan VSAT yang memanfaatkan Satelit dan Komunikasi Gelombang Radio. Kedua jenis komunikasi ini memiliki keterbatasan dalam kapasitas bandwidth. Dalam penelitian ini diusulkan perancangan Sistem Komunikasi Kabel Laut (SKKL) untuk akses data pulau Bawean. Trafik data dikirimkan melalui serat optik dari kota Surabaya menuju pulau Bawean yang berjarak 235 km. Dalam perancangan ini menggunakan tipe kabel singlemode G.655 dan 5 buah optikal amplifier jenis EDFA. Hasil perancangan menunjukan besarnya power link budget -9.525 dBm, SNR 25.35 dB, Q-factor 9.26, dan BER 1,009×10^-20.

Evaluasi Sistem Proteksi dan Koordinasi Relai Arus lebih Gedung Mall XYZ Menggunakan ETAP 19.0.1 Fuad Djauhari; Idris Kusuma; Endang Retno Nugroho
Jurnal Ilmiah Giga Vol 25, No 2 (2022): Volume 25 Edisi 2 Tahun 2022
Publisher : Universitas Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47313/jig.v25i2.1915

Large buildings require optimal electrical protection. Short-circuit events are the most common occurrences. If there is a short-circuit fault on one of the feeders, the circuit breaker whose position is upstream from the fault center must work ahead of the circuit breaker whose position is upstream from the short-circuit fault center. The problem that occurs in the XYZ Mall Building is the opposite. When there is a short circuit current, it will cut off the main connector. As a result, some of the building's electricity will also go out. The purpose of this study is to regulate the coordination of relay protection repeatedly in this building. The study will evaluate the existing electrical Single Line Diagram of the XYZ Mall Building and perform simulations with the help of ETAP 19.0.1 software. The simulation results get the value of the protection system that has been adjusted where the curves of each relay do not intersect with each other so that the coordination of each relay is safe, with the standard time delay setting of 0.2 to 0.4 seconds. To overcome the problem in the XYZ Mall building, the relay that is not suitable must be set manually according to the simulation results to prevent tripping some of the buildings in the event of a short circuit fault.

Pelayanan Wi-Fi Gratis untuk Mendukung Pembelajaran Online saat Pandemi COVID-19 Ruliyanta Ruliyanta; Wismanto Setyadi; Endang Retno Nugroho
JPKMI (Jurnal Pengabdian Kepada Masyarakat Indonesia) Vol 4, No 1: Februari (2023)
Publisher : ICSE (Institute of Computer Science and Engineering)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36596/jpkmi.v4i1.574

Abstrak: Pandemi COVID-19 berdampak pada diberlakukannya Pembatasan Sosial Berskala Besar atau PSBB. Salah satu implementasi dari PSBB adalah dengan dilaksanakannya proses belajar mengajar secara Online atau daring. Sekolah secara daring memang cukup efektif dalam masa pandemi ini. Permasalahan yang timbul adalah dibutuhkan sarana trafik data untuk melaksanakan kegiatan pembelajaran Online. Tujuan kegiatan Pengabdian kepada Masyarakat ini adalah menyediakan layanan Wi-Fi gratis di wilayah Kecamatan Jonggol, Kabupaten Bogor untuk mendukung kegiatan pembelajaran secara Online. Jaringan Wi-Fi ini dibangun dipemukiman padat di salah satu rumah penduduk. Hasilnya Wi-Fi tersebut dimanfaatkan oleh murid-murid pelajar sekolah dasar, sampai perguruan tinggi dengan peserta rata-rata 4 sampai 5 orang dalam satu sesi. Rata-rata pengguna harian 10 orang. Kecepatan data maksimal mendekati 252 Kbps. Pada kondisi 10 pengguna kecepatan rata-rata pada 150 Kbps. Kendala yang didapati adalah terbatasnya area jangkauan sinyal Wi-Fi dan adanya larangan berkumpul di satu titik oleh aparat setempat. Disarankan untuk kegiatan berikutnya untuk dikembangkan dengan berbagi Wi-Fi, sehingga pengguna bisa mengakses dari rumah masing-masing.Abstract: The COVID-19 pandemic has resulted in the enactment of Large-Scale Social Restrictions or PSBB. One of the implementations of PSBB is the implementation of Online or Online teaching and learning processes. Online schooling is indeed quite effective during this pandemic. The problem that arises is that data traffic facilities are needed to carry out Online learning activities. The purpose of this Community Service activity is to provide free Wi-Fi services in the Jonggol District, Bogor Regency to support Online learning activities. This Wi-Fi network was built in a dense settlement in one of the residents' houses. The result is that Wi-Fi is used by students from elementary school to college with an average of 4 to 5 participants in one session. The average daily users are 10 people. The maximum data rate is close to 255 Kbps. In the condition of 10 users, the average speed is 150 Kbps. The obstacles found are the limited coverage area of the Wi-Fi signal and the prohibition of gathering at one point by local officials.

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