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All Journal Journal of ICT Research and Applications ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Universa Medicina Halaqa : Islamic Education Journal Jurnal Teknik Elektro dan Komputer TRIAC Jurnal Diplomasi Pertahanan Jurnal Cahaya Mandalika Journal Research of Social Science, Economics, and Management Buletin Pos dan Telekomunikasi
Dadang Gunawan
Electrical Engineering Department, University of Indonesia
Religion Humanities Computer Science & IT Control & Systems Engineering 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 Medicine & Pharmacology Public Health Social Sciences

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Exon prediction on DNA-genes of Plasmodium falciparum based on coding sequence structure using hidden Markov model Agoes, Suhartanti; Gunawan, Dadang; S, Sardy; Hoedojo, Hoedojo
Universa Medicina Vol 26, No 3 (2007)
Publisher : Faculty of Medicine, Trisakti University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2007.v26.129-136

Abstract

BACKGROUNDA hidden Markov model (HMM) is used for exon prediction on DNA of genes Plasmodium falciparum that has a model structure based on exon region structure in coding sequence (CDS). The objective research was to develop a new structure model to predict exon on DNA-genes of Plasmodium falciparum based on CDS structure using the HMM system.METHODSModel design in CDS, between two exon regions can be found one intron region and the model state number is used for its region. Its state number is used by separating start codon from first exon region and stop codon from the last exon region up to 9. The Viterbi algorithm and the backward-forward method for transition as well as emission states are used for training process. Furthermore, Viterbi and Baum-Welch algorithms are used for the testing process. The correlation coefficient (CC) was used as performance indicator, as the ratio of the estimated state in the output and the original state in the input of the model. RESULTSThe simulation results has shown that the CC values depend on the given of the backward-forward transition state values randomly. The model with state number 9 showed the highest average of CC values of 0.7289 for Viterbi algorithm, and is 0.7166 for Baum-Welch algorithm. However, the lowest average of CC values has been found for the model with state number five. Its values are 0.6735 by using Viterbi algorithm and 0.6661 by using Baum-Welch algorithm. CONCLUSIONThe new structure model based on HMM system was valid to predict exon on DNA-genes of Plasmodium falciparum.
Diplomasi Pertahanan Indonesia Dalam Menyikapi Kompetisi India dan China di Samudera Hindia Firmansyah, Abdul Rizki; Gunawan, Dadang; Pedrason, Rodon
Jurnal Diplomasi Pertahanan Vol 4, No 2 (2018): Jurnal Prodi Diplomasi Pertahanan
Publisher : Universitas Perrtahanan Indonesia (UNHAN)

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Abstract

Abstrak – Jurnal ini mengkaji kawasan Samudera Hindia yang menjadi arena kompetisi India dan China. Kompetisi berawal dari tiga kebijakan China yaitu, Counter Piracy Operation, string of pearls  dan projeksi politik luar negeri belt and road inisiative China yang menjadi faktor penyebab India bereaksi. Reaksi India (act east policy) menciptakan situasi dilema keamanan, salah satu contoh kompetisinya adalah memperkuat pertahanan di pangkalan militer Andaman dan Nicobar yang berbatasan langsung dengan teritori Indonesia (Aceh) untuk memantau intensitas mobilitas PLA Navy China di Selat Malaka. Letak geografis yang strategis (sebagai choke point), membuat Indonesia memiliki peran natural dalam kompetisi India dan China. Sehingga Indonesia perlu menyikapi kompetisi dengan cara meningkatkan hubungan yang kooperatif antara India–Indonesia–China. Untuk mendukung penelitian ini penggunaan teori neo realis, dilema keamanan, dan geopolitik berfungsi menganalisis dinamika kompetisi. Kemudian teori politik luar negeri bebas aktif dalam kerangka Poros Maritim Dunia dan diplomasi pertahanan berfungsi sebagai landasan Indonesia bersikap. Penelitian dilakukan dengan pendekatan kualitatif yang mengandalkan data tinjauan pustaka dan wawancara. Hasil analisis bertujuan sebagai rekomendasi kebijakan pemerintah Indonesia yang selaras dengan kepentingan nasional Indonesia dalam menyikapi kompetisi India dan China di masa depan.Kata Kunci : Dilema Keamanan, Kompetisi India China, Samudera Hindia, Diplomasi Pertahanan Indonesia Abstract – This journal is about competition of India and China in Indian Ocean Rim. Causes of the competition are from three policies of China, first Counter Piracy Operation, second string of pearls  and third belt and road inisiative China. Reaction of India (act east policy) automaticaly make a security dilema situastions, e.g of the competition is strengthening India far base military in Andaman and Nicobar island is facing to Indonesian territory (Aceh) to monitoring PLA Navy intensity through Mallaca Strait. Indonesia with choke point, make Indonesia have a natural role in the competition of India and China. Then Indonesia have a right to respond the competition with increasing cooperative relations between India – Indonesia – China. Journal analisys are using neorilsm, security dilema, and gheopilitic. Then free active foreign policy in maritime exis framwork and defence diplomacy are base of Indonesia responds. Qualitatif will bring this reasearch and use data base from any litteratures and interviews. The purpose of analisys results are for policy recomendation that relevan with Indonesia national Interest to respond India and China competition in the future.Keywords : security dillema, india China Competition,  Indian Ocean, Defence Diplomacy of Indonesia.
Peran Diplomasi Pertahanan Dalam Implementasi Kebijakan Kerja Sama Program KFX/IFX Indonesia-Korea Selatan Nurrohman, Indra; Gunawan, Dadang; Sumarlan, Sutrimo
Jurnal Diplomasi Pertahanan Vol 5 No 1 Jurnal Diplomasi Pertahanan (April 2019)
Publisher : Universitas Perrtahanan Indonesia (UNHAN)

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Abstract

Abstrak -- Implementasi kebijakan kerja sama program KFX/IFX mengalami penundaan dikarenakan adanya kendala pada ketersediaan anggaran pertahanan. Meskipun telah dilakukan evaluasi, program harus tetap dilanjutkan karena menyangkut pencapaian kepentingan nasional di bidang pertahanan pertahanan udara. Oleh karena itu, terdapat dua rumusan masalah yang diangkat dalam penelitian ini, yakni bagaimanakah kepentingan Indonesia dalam kerja sama program KFX/IFX Indonesia-Korea Selatan? dan bagaimanakah peran diplomasi pertahanan terhadap implementasi kebijakan kerja sama program KFX/IFX Indonesia-Korea Selatan, khususnya dalam melancarkan program tersebut yang sempat tertunda?.Penelitian ini dilakukan dengan menggunakan pendekatan kualitatif. Data dihimpun melalui proses wawancara dengan informan dari berbagai Kementerian/Lembaga terkait. Kemudian didukung dengan studi literatur. Proses analisis data di dalam penelitian ini dilakukan dengan membandingkan lima teori dan konsep yang digunakan, yaitu peran, kepentingan nasional, strategi, negosiasi internasional dan diplomasi pertahanan. Hasil penelitian menunjukkan bahwa kepentingan Indonesia dalam program ini melibatkan banyak sektor pada Kementerian/Lembaga nasional. Sehingga, dalam upaya memenuhi tujuan akhir kemandirian pertahanan nasional maka setiap sektor tersebut memiliki andil dalam menentukan aspek-aspek yang akan dinegosiasikan ulang terhadap pihak Korea Selatan. Dengan demikian, bentuk diplomasi pertahanan Indonesia dalam upaya melanjutkan program kerja sama KFX/IFX adalah dengan membentuk Tim Renegosiasi. Tim Renegosiasi bertugas sebagai aktor dalam upaya menjalankan diplomasi terhadap DAPA, JPMO dan KAI. Tim terdiri dari K/L dan konsultan hukum serta industri yang berperan secara tertutup dalam merumuskan aspek-aspek yang perlu direnegosiasi, kemudian peran terbuka untuk secara langsung melakukan diplomasi terhadap pihak Korea Selatan.Kata Kunci: peran, diplomasi, program KFX/IFX, tim renegosiasi, kepentingan nasional Abstract -- The policy implementation in KFX/IFX cooperation programme has been delayed due to the problem in defense budget availability. However, after the evaluation to the programme has been done. It conclude that the programme shall be continued in case to achieve the national interest of defense sector through Minimum Essential Force fulfillment, specifically in air defence. Therefore, there are two research question appear in this research. Firstly, how is the national interest of Indonesia in KFX/IFX cooperation between Indonesia-Republic of Korea, specifically in purpose to reinforce the delayed programme and how is the role of defense diplomacy in policy implementation of KFX/IFX cooperation programme Indonesia-Republic of Korea .This research used qualitative approach. Data has been collected through interview process with informants from various related Ministry/Institution. The research then supported by literature study. The process od data anlaysis in this research has been done with comparing the five used theories and concepts, which are Role, National Interest, Strategy, International Negotiation and Defense Diplomacy. The result showed that national interest of Indonesia in this programme involves many sectors in Ministry/Institution. Therefore, in the effort to fulfil the goalof the independency of national defense industry, so every sector has their own contribution on determining the aspects of renegotiation with Republic of Korea’s side. Finally, the form of Indonesia’s defense diplomacy in continuing KFX/IFX cooperation programme is by building a renegotiation team. Renegotiation team is in charge as an actor for committing diplomacy action with DAPA, JPMO and KAI as RoK representative. The team consists of related Ministry/Institution, Law and Industry consultant. It played part as covert role in constructing the renegotiations aspects, yet as overt role in holding the diplomacy way to the Korean side. Keywords: role, diplomacy, KFX/IFX programme, renegotiation team, national interest
Improved Performance of Mean Greedy Algorithm for Chunk Allocation in SC-FDMA Uplink Systems using Joint-User and Chunk-Based Allocation Arfianto Fahmi; Muhamad Asvial; Dadang Gunawan
Journal of ICT Research and Applications Vol. 7 No. 1 (2013)
Publisher : LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5614/itbj.ict.res.appl.2013.7.1.4

Abstract

In this paper, the problem of subcarrier allocation on chunk-by-chunk basis in SC-FDMA uplink systems is investigated. Improved mean enhanced greedy algorithms are proposed for performing joint-user and chunk-based allocation at each transmission time interval. Selection criteria based on spectral efficiency and fairness are also proposed to choose the final allocation at each transmission time interval. Simulation results show that when the number of users and the velocity of the users were varied, the improved algorithms that use selection criteria based on spectral efficiency and fairness could outperform the existing mean greedy algorithms that employ user-based allocation in terms of spectral efficiency and fairness. Moreover, the improved algorithms not only showed better performance but also had the same time complexity as the existing mean greedy algorithms.
Strengthening the Profile of Pancasila Students through the Development of Mathematical Logic E-Books Integrated with Moral Value: Penguatan Profil Pelajar Pancasila Melalui E-Book Logika Matematika Terintegrasi Nilai Akhlak Nihayati, Nihayati; Astuti, Robia; Sutriningsih, Naning; Pasha, M Kemal; Feliza, Destri Anggita; Gunawan, Dadang
Halaqa: Islamic Education Journal Vol. 8 No. 1 (2024): Juni
Publisher : Universitas Muhammadiyah Sidoarjo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21070/halaqa.v8i1.1676

Abstract

Moral decadence in students requires character strengthening to form the nation's generation by the goals of national education as stated in the 2003 National Education System Law. The formation of student's character can be realized through strengthening the Pancasila student profile in a learning process. The use of learning media that is interactive and integrated with moral values ​​is one of the efforts to realize the Pancasila student profile. So this research aims to produce a mathematical logic E-Book that is feasible and effective for use in the learning process to support strengthening the profile of Pancasila students. This type of research is R&D (Research and Development) development research which refers to the ADDIE development model. The subjects in this research were class XII students at Pringsewu Muhammadiyah High School. The data analysis techniques used are feasibility tests based on material expert assessments, learning design expert assessments, learning media expert assessments, user (teacher) assessments, effectiveness tests based on observations of student activities, student response questionnaires, and learning outcomes tests. The research results show that based on expert assessment, the material is substantially correct there are no conceptual errors and the average in other aspects is 4.4, so the e-book is considered appropriate. Meanwhile, based on trials, it was obtained that student activity results reached an average of 94.3%, positive student responses reached 86.8% and student learning results reached 88.89%, so it can be concluded that e-books are considered effective in learning. Keywords: E-Book, Mathematica Logic, Moral Values, Pancasila Student Profile
Polarimetric Calibration for Ground-based Synthetic Aperture Radar based on Point Target Approach CHASANAH, NURUL; GUNAWAN, DADANG; KURNIAWAN, FAROHAJI; WIYONO, AGUS; ABNER, JEFRI; SETIADI, BAMBANG
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 4: Published October 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i4.968

Abstract

ABSTRAKKalibrasi polarimetri (PolCal) dari citra radar aperture sintetis berbasis darat (GB SAR) sangat penting dalam aplikasi analisis spasial empiris. Studi ini menyajikan prosedur pra-pemrosesan dan metode kalibrasi untuk memperoleh citra kompleks polarisasi tunggal dengan kualitas tinggi yang terkalibrasi. Pemrosesan data GB SAR menjadi citra kompleks tunggal diterapkan dalam riset ini. Penelitian ini bertujuan untuk menerapkan kalibrasi polarimetri eksternal pada radar gelombang kontinu frekuensi bertahap (SFCW) di pita frekuensi C yang dihasilkan oleh perangkat VNA menggunakan satu trihedral dan dua dihedral CR dengan sudut kemiringan yang berbeda. Setelah pra-pemrosesan, teknik kalibrasi yang diterapkan menunjukkan ketidakseimbangan saluran antara saluran polarisasi yang berbeda (co-pol and cross-pol) dapat diatasi dengan baik.Kata kunci: Kalibrasi Polarimetri, Radar Apertur Sintetis Berbasis Darat (GB SAR), Ketidakseimbangan Saluran ABSTRACTPolarimetric calibration (PolCal) of ground-based synthetic aperture radar (GB SAR) images is critical in empirical spatial analysis applications. This study provides the preprocessing procedures and calibration method required for obtaining highquality calibrated polarimetric single-look complex imagery. The technique of converting GB SAR data into single-look complex images is examined. This work aimed to perform an external polarimetric calibration of the C-band steppedfrequency continuous wave (SFCW) radar produced by VNA employing single trihedral and two dihedral CRs with varying tilt angles. After preprocessing, the calibration technique profoundly enhances channel imbalance between different polarization channels (co-pol and cross-pol).Keywords: Polarimetric Calibration, Ground-based synthetic aperture radar (GB SAR), Channel Imbalance
Planning and simulation of DRM digital radio technology using Single Frequency Network method for Indonesia Musfirah; Gunawan, Dadang
Buletin Pos dan Telekomunikasi Vol. 22 No. 2 (2024): December 2024
Publisher : Centre for Research and Development on Resources, Equipment, and Operations of Posts and I

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17933/bpostel.v22i2.386

Abstract

This study aims to design a digital radio network using a single-frequency network (SFN) and Digital Radio Mondiale (DRM) technology in Indonesia. The single frequency used is 87.1 MHz. Based on the ITU Radio Regulation, this frequency channel is still part of the broadcasting allocation for Region 3 and has not been used for analog radio in Indonesia. SFN design and simulation were carried out using existing analog transmitters owned by RRI to cover the entire territory of Indonesia. The simulation uses CHIRplus_BC software, which is based on recommendations, reports, and ITU-R publications on parameters and technical provisions of SFN. The technical provisions that are a limitation in SFN design are the maximum distance between transmitters of 75 km. However, the existing transmitter location of RRI transmitters is not evenly distributed throughout Indonesia, so not all transmitters can be used. Therefore, this design requires 3 scenarios in order to cover 95% of the population of Indonesia. The first condition in this plan is to use the existing transmitter sites owned by LPP RRI with a maximum distance of 75 km between the transmitter locations. The second condition is to use the transmitter sites owned by TVRI to cover the remaining blank spots in regions not covered by RRI's locations. If both of them still could not cover all regions in Indonesia, then it will need to add some new transmitters in blank spot locations. The simulation result showed that service in all regions in Indonesia requires at least 330 transmitters consisting of 153 existing RRI transmitters, 45 TVRI transmitters and 132 new transmitters with a settled technical parameter. To be able to cover all regions of Indonesia through SFN design, RRI still needs to build new transmitters as much as 40% of the total transmitters needed
OPTIMALISASI JUMLAH RING DAN KLUSTER PADA SKEMA ROUTING LORAWAN BERBASIS VARIASI MODEL SEBARAN SENSOR Ajiesastra, Raden Andhika; Arifin, Ajib Setyo; Gunawan, Dadang
Jurnal Teknik Elektro dan Komputer TRIAC Vol 10, No 1 (2023): Mei 2023
Publisher : Jurusan Teknik Elektro Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/triac.v10i1.19729

Abstract

Teknologi Long Range Wide Area Network (LoRaWAN) yang sangat pesat untuk sistem IoT tidak dapat disangkal karena komunikasi nirkabel LPWAN memimpin dalam skalabilitas, masa pakai, kapasitas, biaya, dan jarak transmisi. terutama karakteristik LoRaWAN yang dapat melakukan transmisi jarak jauh dan konsumsi energi yang rendah. Namun, konfigurasi jaringan yang tepat penting dilakukan untuk proses pertukaran paket data agar semua node dapat terhubung dengan konsumsi energi rendah. Menemukan konfigurasi yang optimal untuk mendapatkan hasil maksimal dari protokol transmisi LoRa merupakan hal yang tidak terpisahkan sebelum penerapan. Distance-Ring Exponential Stations Generator (DRESG) menghadirkan skema perutean yang memungkinkan perutean multi-hop dan mengurangi konsumsi energi node. Penelitian ini menggunakan simulasi model matematis untuk memperbaiki metode tersebut dengan mengimplementasikan pembagian klaster pada busur lingkaran dengan berbagai skema penyebaran node, yang memungkinkan sistem memiliki mekanisme perutean dinamis yang menyesuaikan dengan distribusi node. Hasil simulasi menunjukkan dengan kombinasi skema distribusi node random uniform centered dapat meningkatkan efisiensi energi antara jumlah virtual ring dan node adalah  3 ring dan 6 ring,  nilai bebas atau merata dari div 2 sampai dengan div 8 dengan critical node pada ring 1 dan memiliki energi terendah sebesar 0,56 mJ.
The Power Reduction Policy and Its Impact on Cellular Network Performance under GSM-R Interference: A Case Study of KCJB-Indosat Degita, Luthia Defit; Gunawan, Dadang
Journal Research of Social Science, Economics, and Management Vol. 4 No. 12 (2025): Journal Research of Social Science, Economics, and Management
Publisher : Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59141/jrssem.v4i12.904

Abstract

This research aims to evaluate the impact of transmitter power reduction policies implemented to mitigate spectrum interference between the GSM-R system and cellular networks on the Jakarta–Bandung High-Speed Railway (KCJB), with a specific focus on Indosat. Employing a quantitative descriptive method complemented by strategic management analysis (SWOT, IFE–EFE, QSPM), this study analyzes technical parameters (RSRP, traffic volume, active users) and business indicators (daily revenue, customer churn rate). Findings indicate significant service quality degradation, marked by a 35.7% decrease in RSRP coverage, 34% reduction in daily traffic volume, and 33% decrease in active users. Additionally, business performance suffered, reflected by 5.8% drop in daily revenue and a substantial rise in customer churn. Strategic analysis suggests joint spectrum management and installation of band-pass filters on the GSM-R side as the optimal mitigation strategy. This study underscores the necessity of coordinated technical and regulatory solutions to balance interference mitigation with telecommunication service sustainability.
ANALISIS MANAJEMEN TATA KELOLA TEKNOLOGI INFORMASI SATUAN KERJA DI INSTANSI XYZ DENGAN KERANGKA KERJA COBIT 2019 Chalvari, Kancerio; Gunawan, Dadang
Jurnal Cahaya Mandalika ISSN 2721-4796 (online) Vol. 4 No. 1 (2023)
Publisher : Institut Penelitian Dan Pengambangan Mandalika Indonesia (IP2MI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/jcm.v4i1.1229

Abstract

Tata kelola Teknologi Informasi (TI) telah menjadi topik penting dalam manajemen sistem informasi karena dapat mempengaruhi kemampuan perusahaan/organisasi maupun instansi pemerintah dalam mencapai tujuan. Penilaian tingkat kematangan di satuan kerja Divisi Teknologi Informasi dan Komunikasi (Div TIK) perlu dilakukan guna mengetahui kondisi tata kelola TI saat ini. Pengukuran tingkat kematangan dilakukan menggunakan kerangka kerja COBIT 2019 yaitu dengan memetakan tujuan organisasi ke dalam COBIT 2019 sehingga didapatkan Domain-domain yang berkaitan. Pengukuran tingkat kematangan pada satker Div TIK menunjukkan terdapat 8 Domain proses. Domain EDM01, APO07, APO08, BAI01, dan MEA04 berada pada level 3 sedangkan domain APO04, BAI11, dan DSS04 berada pada level 4. Pengukuran nilai kesenjangan antara tingkat kematangan saat ini dengan tingkat kematangan yang diharapkan juga dilakukan. Nilai kesenjangan terbesar terdapat pada domain APO04 dengan nilai 1,48, dan yang terkecil terdapat pada domain APO07 dengan nilai 0,59. Analisis perbaikan yang dapat dilakukan untuk meningkatkan level kematangan diantaranya adalah dengan menilai secara berkala apakah mekanisme tata kelola TI yang disepakati beroperasi secara efektif; melakukan tinjauan rutin untuk menilai evolusi keterampilan; dan mengontrol layanan, aset, dan sumber daya TI.
Co-Authors ABNER, JEFRI Agus Wiyono Ajib Setyo Arifin Ajiesastra, Raden Andhika Arfianto Fahmi Bambang Setiadi Chalvari, Kancerio Degita, Luthia Defit Feliza, Destri Anggita Filbert H. Juwono Firmansyah, Abdul Rizki Hoedojo Hoedojo, Hoedojo KURNIAWAN, FAROHAJI Muhamad Asvial Musfirah Naning Sutriningsih Nihayati, Nihayati Nurrohman, Indra Nurul Chasanah Pasha, M Kemal Pedrason, Rodon REGINA RIYANTIKA Robia Astuti Sardy S, Sardy Suhartanti Agoes, Suhartanti Sumarlan, Sutrimo Yudhi Triprasetyo, Yudhi