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All Journal Jurnal Ilmiah Merpati (Menara Penelitian Akademika Teknologi Informasi) Jurnal Ilmu Komputer Buletin Udayana Mengabdi Jurnal SPEKTRUM Jurnal Pendidikan Teknologi dan Kejuruan TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic PROSIDING CSGTEIS 2013 Jurnal Teknologi Informasi dan Ilmu Komputer JOIV : International Journal on Informatics Visualization Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Syntax Literate: Jurnal Ilmiah Indonesia Matrix : Jurnal Manajemen Teknologi dan Informatika Cetta: Jurnal Ilmu Pendidikan Jurnal RESISTOR (Rekayasa Sistem Komputer) Astonjadro International Journal of Advances in Data and Information Systems Jurnal Ilmiah Vastuwidya Jurnal Locus Penelitian dan Pengabdian Prosiding Seminar Nasional Sisfotek (Sistem Informasi dan Teknologi Informasi) MATRIX : JURNAL MANAJEMEN TEKNOLOGI DAN INFORMATIKA Jurnal SPEKTRUM
I Made Oka Widyantara
Electrical Engineering Universitas Udayana
Aerospace Engineering Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Social Sciences Other

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EVALUASI KINERJA CODEC CITRA MEDIS BERBASIS WAVELATDAN ENTROPY CODING Ayuni Harianti; I Made Oka Widyantara; Ni Made Ary Esta Dewi Wirastuti
Jurnal Ilmiah Vastuwidya Vol. 6 No. 1 (2023): Jurnal Ilmiah Vastuwidya
Publisher : Universitas Mahendradatta

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

Abstract

Salah satu bidang yang memanfaatkan data citra adalah di bidang medis,karena citra medismemiliki peranan yang sangat penting dalam dunia medis saat ini., biasanya citra medis membutuhkanpenyimpanan yang cukup besar pada komputer dan bertujuan untuk melakukan kompresi pada citramedis menggunakan discrete wavelet transform (DWT) dan entropy coding (Huffman dan Arithmetic).Lima jenis codec yaitu Coiflet, Symlet, Daubechies, Biorthogonla dan Dmeyer digunakan dalampenelitian ini membandingkan PSNR. Penelitian ini menggunakan nilai threshold 5. Percobaan yangdilakukan menggunakan citra medis yang mewakili jenis citra hasil CT-Scan dan MRI sebagai datatesting. Penelitian ini menunjukkan bahwa codec Haar/Daubhecies1, Symlet1 dan Biorthogonal1memberikan hasil yang lebih baik dalam hal kualitas citra (PSNR).
Design Teknis Pemanfaatan Pita Frekuensi Radio 2600 MHz untuk Implementasi 5G di Bali Berbasis Data Okupansi dan Simulasi Seamcat I Nyoman Suada; I Made Oka Widyantara; Nyoman Pramaita
Jurnal Locus Penelitian dan Pengabdian Vol. 5 No. 5 (2026): JURNAL LOCUS: Penelitian dan Pengabdian
Publisher : Riviera Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58344/locus.v5i5.5824

Abstract

Implementasi 5G di Bali menghadapi keterbatasan spektrum, sementara pita 2600 MHz belum dirilis karena kekhawatiran interferensi dengan layanan Fixed Satellite Service (FSS) dan belum adanya kajian teknis berbasis data riil. Penelitian ini bertujuan merumuskan desain teknis pemanfaatan pita 2600 MHz untuk mendukung kebutuhan data tinggi di kawasan pariwisata Bali serta mewujudkan visi smart island. Metode penelitian meliputi observasi monitoring spektrum langsung di lapangan menggunakan standar ITU-R SM.1880-2 untuk menganalisis okupansi riil, kemudian simulasi koeksistensi antara sistem 5G NR dan FSS menggunakan perangkat lunak SEAMCAT dengan metode Monte Carlo untuk memprediksi probabilitas interferensi dan menentukan parameter mitigasi. Hasil penelitian menunjukkan pita 2600 MHz di Bali teridentifikasi belum terduduki (clear). Pada skenario co-channel, diperlukan jarak proteksi 18 km untuk mencapai probabilitas interferensi (PI) 0%, sehingga secara teknis tidak layak. Sebaliknya, pada skenario kanal bersebelahan dengan guard band 20 MHz, koeksistensi layak dilakukan tanpa interferensi (PI=0%) pada jarak proteksi minimum 32 meter. Kebaruan penelitian ini terletak pada integrasi data okupansi riil dari stasiun monitor Bali dengan simulasi SEAMCAT yang kontekstual untuk pita 2600 MHz, menghasilkan parameter jarak proteksi spesifik dan skema alokasi blok untuk tiga operator. Luaran penelitian ini berupa desain alokasi yang direkomendasikan menggunakan mode TDD pada band n41 untuk pemanfaatan bandwidth optimal 190 MHz, atau mode FDD pada band n7 dengan guard band untuk menjamin koeksistensi dengan layanan satelit, yang siap menjadi acuan teknis bagi regulator dan operator.
Moderate guerrilla for the user’s understanding of the artificial intelligence-based user security awareness prototype I Putu Agus Eka Pratama; I Made Oka Widyantara; Linawati Linawati; Nyoman Gunantara
Bulletin of Electrical Engineering and Informatics Vol 15, No 3: June 2026
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eei.v15i3.10478

Abstract

To enhance user security awareness in response to the numerous cyberattacks targeting users, we developed an artificial intelligence (AI)based prototype utilizing the naive retrieval augmented generation (RAG) method. In pursuit of this objective, we conducted user testing employing the usability testing method to evaluate users' comprehension of the developed prototype. We integrated moderate and guerrilla techniques in usability testing by engaging 20 randomly selected respondents from the government, private sectors, and industries. The majority of participants were male, aged 26-35 years, holding a bachelor's degree, and possessing 510 years of computer experience. The test data were analyzed using the USE assessment matrix, which includes four assessment parameters: usefulness, satisfaction, ease of use, and ease of learning (USE). The data were presented in tabulated form, with total and average values. The test results indicate that usefulness, satisfaction, ease of USE achieved a total value exceeding 4.00 and an average value of 4.29, within an interval range of 4.20-5.00, categorized as very good. The findings of this study have implications for enhancing user security awareness and provide feedback for refining the framework and prototype in subsequent research.
Ship Trajectory Extraction Using Python Vessel Tracking Interpolation Method Widyadi Setiawan; Linawati Linawati; I Made Oka Widyantara; Dewa Made Wiharta; Sri Andriati Asri
PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic Vol. 12 No. 2 (2024): September 2024
Publisher : LPPM Universitas Islam 45 Bekasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33558/piksel.v12i2.9567

Abstract

A deep understanding of ship trajectory movements has essential implications for maritime applications, including navigation, monitoring, and marine traffic analysis. Efficient and accurate extraction techniques are necessary to extract valuable information from ship trajectory data. One commonly used approach is the interpolation method, which allows the reconstruction of smooth trajectories from recorded data points. This research is focused on analyzing the extraction of ship trajectories using the interpolation method provided by the Python Vessel Tracking (PyVT) library. This method allows interpolation of ship trajectory data based on various algorithms available in the library. This research aims to evaluate the effectiveness and accuracy of interpolation methods from PyVT in reconstructing ship trajectories from incomplete or disturbed data. Within this research's framework, several test scenarios were implemented to examine different types of ship trajectory data, including data with missing points and speed variations. Evaluation metrics RMSE (root mean Squared Error), which includes reconstruction accuracy, will be utilized from the interpolation algorithm in PyVT.
Co-Authors A. T. A Prawira Kusuma A.A. Made Agung Istri Iswari Aditya Dwipayana Aditya Widhiatama, Ngakan Putu Agus Anwar Eka Wahyudi Anak Agung Ayu Putri Ardyanti Anang Kusnadi Andi Nur Rachman Aniek Laksmidewi Arda Narendra, I Gusti Lanang Asana, I Made Dwi Putra Atmaja, Ketut Jaya Ayuni Harianti Ayuni Harianti Bagus D. Cahyono Cecep Muhamad Sidik Ramdani Christanto Nadeak, Yobel Cokis Ratih Kumbara David Clemens Sumampouw Derry Suia Pathentantama Desak Ayu Sista Dewi Dessy Hariyanti, NK Dewa Ayu Indah Cahya Dewi Dewa Made Sri Arsa, Dewa Made Dewa Made Wiharta Edo Halim Saputra Fajar Purnama Feliks Sinaga Gamantyo Hendrantoro Gede Manuaba, Ida Bagus Gede Sukadarmika Haris Chandra Agustina I Dewa Gede Hardi Rastama I G. A. K. Diafari Djuni Hartawan I G.A.K. Warmayana I Gede Iwan Sudipa I Gede Sudiantara I Gede Sudiantara I Gusti Agus Adek Putra Ardiwinata I Gusti Ayu Garnita Darma Putri I Gusti Nyoman Dharmayana I Gusti Rai Agung Sugiartha I Kadek Adi Wiguna Sanjaya I Kadek Noppi Adi Jaya I Komang Adi Bayu Adnyana I Made Aditya Virgiawan I Made Arsa Suyadnya I Made Bayu Dibawan I Made Dhanan Pradipta I Made Dwi Putra Asana I Made Rai Putera Yasa I Made Sukarsa I Made Yudi Candra Putra I Nyoman Gede Arya Astawa I Nyoman Gunantara I Nyoman Suada I Nyoman Suada I Putu Agus Eka Pratama I Putu Ardana I Putu Gd Sukenada Andisana I Putu Noven Hartawan I Wayan Kayun Wardana I Wayan Shandyasa I Wayan Shandyasa I.A Laksmi IBGD. Dhyaksa Ida Bagus A. Swamardika Ida Bagus Gede Manuaba Ida Bagus Putu Adnyana Ida Bagus Putu Adnyana Indra Dwi Cahya Setyawan Janice Jessica Indrayani Jayantari, Made Widya Juliawan Pawana, I Wayan Adi Kadek Dwi Mahardika Adnyana Kadek Surya Adi Saputra Kamarudin, Nur Diyana Ketut Bagus Bayu Sanjaya Komang Ery Rusdiana Komang Gede Widi Adnyana Komang Kompyang Agus Subrata Komang Oka Saputra Komang Tri Wahyuni . L Linawati L.D. Purnamasari Linawati Linawati Linawati Linawati linawati linawati Linawati Linawati Lintin, Yosep Tara M Acarya Mordekhai Karang M Zatiar Erwan Kalam M. Azman Maricar made andyka Made Arya Putra Kusuma Made Sudarma Made Sudarma Muhammad Audy Bazly N Utami Wedanti N. M. A. E. Dewi Wirastuti N.M.A.E.D Wirastuti Ngurah Indra ER Ni Komang Ayu Suandaniasih Ni Made Ary Esta Dewi Wirastuti Ni Made Ary Esta Dewi Wirastuti Ni Putu Eka Merliana Ni Putu Widya Yuniari NMAED Wirastuti Nyoman Pramaita Nyoman Pramaita Nyoman Putra Sastra P. A. Satya Prabhawa Pawana P., I Gusti Ngurah Agung Pawana, I Wayan Adi Juliawan Prabawa, I Nyoman Angga Pradnyana, I Made Prahasta Napolado Damanik Putra, Putu Bagus Adidyana Anugrah Putri Alit Widyastuti Santiary Putu Agus Pradnyana Jaya Putu Arya Mertasana Putu Krisna Adi, I Gusti Ngurah Putu Prima Winangun Putu Sintia Susiani Pande R. Sapto Hendri Boedi Soesatyo Rahmi Nur Shofa Rukmi Sari Hartati Santi Ika Murpratiwi Saputra, Komang Oka Setyohadi, Djoko Budiyanto Sri Andriati Asri Sri Andriati Asri, Sri Andriati Susila, Anak Agung Ngurah Hary Tri Febriana Handayani W. Setiawan Widiadnyana, Putu Widyadi Setiawan Widyanto, I Putu Wikananda, I Gusti Ngurah Satya Wirawan Wirawan