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All Journal International Journal of Electrical and Computer Engineering Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Pembangunan Wilayah dan Kota Mechatronics, Electrical Power, and Vehicular Technology Journal on Mathematics Education (JME) Jurnal Ilmiah Kursor Jurnal technoscientia Journal of Indonesian Economy and Business Journal of Mathematical and Fundamental Sciences Journal of Engineering and Technological Sciences Journal of ICT Research and Applications Jurnal Edukasi dan Penelitian Informatika (JEPIN) Scientific Journal of Informatics Proceeding of the Electrical Engineering Computer Science and Informatics Jurnal Akuatika Indonesia Journal of Mathematics and Mathematics Education (JMME) JISAE (Journal of Indonesian Student Assesment and Evaluation) JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) Jurnal Darma Agung JURNAL TEKNOLOGI TECHNOSCIENTIA jurnal dikdas bantara LINEAR: Journal of Mathematics Education Jurnal Nasional Teknik Elektro dan Teknologi Informasi Inspiration: Jurnal Teknologi Informasi dan Komunikasi Mathematics Education Journal Journal on Mathematics Education
Bambang Riyanto Trilaksono
Sekolah Teknik Elektro Dan Informatika, Institut Teknologi Bandung Jalan Ganesha 10, Bandung 40132, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Astronomy Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Other

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Klasifikasi Topik Keluhan Pelanggan Berdasarkan Tweet dengan Menggunakan Penggabungan Feature Hasil Ekstraksi pada Metode Support Vector Machine (SVM) Pratama, Enda Esyudha; Trilaksono, Bambang Riyanto
JEPIN (Jurnal Edukasi dan Penelitian Informatika) Vol 1, No 2 (2015): Volume 1, No 2
Publisher : Program Studi Informatika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.732 KB) | DOI: 10.26418/jp.v1i2.11023

Abstract

Pemanfaatan twitter sebagai layanan customer serevice perusahaan sudah mulai banyak digunakan, tak terkecuali Speedy. Mekanisme yang ada saat ini untuk proses klasifikasi bentuk dan jenis keluhan serta informasi tentang jumlah keluhan lewat twitter masih dilakukan secara manual. Belum lagi data twitter yang bersifat tidak terstruktur tentunya akan menyulitkan untuk dilakukan analisa dan penggalian informasi dari data tersebut. Berdasarkan permasalahan tersebut, penelitian ini bertujuan untuk memproses data teks dari tweet pengguna twitteryang masuk ke akun @TelkomSpeedy untuk diolah menjadi informasi. Informasi tersebut nantinya digunakan untuk klasifikasi bentuk dan jenis keluhan. Merujuk pada beberapa penelitian terkait, salah satu metode klasifikasi yang paling baik untuk digunakan adalah metode Support Vector Machine (SVM). Konsep dari SVM dapat dijelaskan secara sederhana sebagai usaha mencari hyperplane yang dapat memisahkan dataset sesuai dengan kelasnya. Kelas yang digunakan dalam penelitian kali ini berdasarkan topik keluhan pelanggan yaitu billing, pemasangan/instalasi, putus (disconnect), dan lambat. Faktor penting lainnya dalam hal klasifikasi adalah penentuan feature atau atribut kata yang akan digunakan. Metode feature selection yang digunakan pada penlitian ini adalah term frequency (TF), document frequency (DF), information gain, dan chi-square. Pada penelitian ini juga dilakukan metode penggabungan feature yang telah dihasilkan dari beberapa metode feature selection sebelumnya. Dari hasil penelitian menunjukan bahwa SVM mampu melakukan klasifikasi keluhan dengan baik, hal ini dibuktikan dengan akurasi 82,50% untuk klasifikasi bentuk keluhan dan 86,67% untuk klasifikasi jenis keluhan. Sedangkan untuk kombinasi penggunaan feature dapat meningkatkan akurasi menjadi 83,33% untuk bentuk keluhan dan 89,17% untuk jenis keluhan.   Kata Kunci—customer service, klasifikasi topik keluhan, penggabungan feature, support vector machine
Wireless Sensor Networks For Volcano Activity Monitoring: A Survey Hulu, Elisati; Riyanto, Bambang; Widyantoro, Sri
Scientific Journal of Informatics Vol 2, No 1 (2015): May 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v2i1.4528

Abstract

Pemantauan gunung api merupakan salah satu bidang penerapan Wireless Sensor Network (WSN). WSN digunakan pertama kali untuk pemantauan gunung api di gunung Tungurahua, Ekuador Tengah pada tahun 2004. Selanjutnya diterapkan pada riset di gunung Reventador, Ekuador Utara dengan 16 sensor digunakan untuk menangkap sinyal seismik dan akustik. Pada kedua riset ini, desain jaringan dan algoritma dibangun untuk menangkap raw-data sinyal seismik dan akustik, dan mengirimnya ke base station. Seperti dua riset sebelumnya, proyek OASIS membangun WSN yang robust untuk memperoleh raw-data sebanyak-banyaknya dengan real time, kontinu dan kualitas sinyal yang high-fidelity. Berbeda dengan riset WSN untuk pemantauan gunung api sebelumnya, riset Rui Tan, dkk. dan Guojin Liu, dkk. mengembangkan WSN untuk pemantauan gunung api secara real time, in-situ dan long-lived tanpa transmisi raw-data ke base station. WSN dan algoritma didesain dengan membangun algoritma pemrosesan in-network untuk mendeteksi gempa vulkanik, menentukan onset time dari gelombang yang biasa muncul pada saat terjadi gempa.
Obstacle Avoidance Method for a Group of Humanoids Inspired by Social Force Model Sadiyoko, Ali; Trilaksono, Bambang Riyanto; Mutijarsa, Kusprasapta; Adiprawita, Widyawardana
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 6, No 2 (2015)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (873.965 KB) | DOI: 10.14203/j.mev.2015.v6.67-74

Abstract

This paper presents a new formulation for obstacle and collision behavior on a group of humanoid robots that adopts walking behavior of pedestrian crowd. A pedestrian receives position information from the other pedestrians, calculate his movement and then continuing his objective. This capability is defined as socio-dynamic capability of a pedestrian. Pedestrian’s walking behavior in a crowd is an example of a sociodynamics system and known as Social Force Model (SFM). This research is trying to implement the avoidance terms in SFM into robot’s behavior. The aim of the integration of SFM into robot’s behavior is to increase robot’s ability to maintain its safety by avoiding the obstacles and collision with the other robots. The attractive feature of the proposed algorithm is the fact that the behavior of the humanoids will imitate the human’s behavior while avoiding the obstacle. The proposed algorithm combines formation control using Consensus Algorithm (CA) with collision and obstacle avoidance technique using SFM. Simulation and experiment results show the effectiveness of the proposed algorithm.
Nonlinear Dynamic Modeling of a Fixed-Wing Unmanned Aerial Vehicle: a Case Study of Wulung Triputra, Fadjar Rahino; Trilaksono, Bambang Riyanto; Adiono, Trio; Sasongko, Rianto Adhy; Dahsyat, Mohamad
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 6, No 1 (2015)
Publisher : Research Centre for Electrical Power and Mechatronics, Indonesian Istitutes of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3378.418 KB) | DOI: 10.14203/j.mev.2015.v6.19-30

Abstract

Developing a nonlinear adaptive control system for a fixed-wing unmanned aerial vehicle (UAV) requires a mathematical representation of the system dynamics analytically as a set of differential equations in the form of a strict-feedback systems. This paper presents a method for modeling a nonlinear flight dynamics of the fixed-wing UAV of BPPT Wulung in any conditions of the flight altitude and airspeed for the first step into designing a nonlinear adaptive controller. The model was formed into 10-DOF differential equations in the form of strict-feedback systems which separates the terms of elevator, aileron, rudder and throttle from the model. The model simulation results show the behavior of the flight dynamics of the Wulung UAV and also prove the compliance with the actual flight test results.
SENIOR HIGH SCHOOL MATHEMATICS LEARNING THROUGH MATHEMATICS MODELING APPROACH Riyanto, Bambang; Zulkardi, Zulkardi; Putri, Ratu Ilma Indra; Darmawijoyo, Darmawijoyo
Journal on Mathematics Education Vol 10, No 3 (2019)
Publisher : Department of Doctoral Program on Mathematics Education, Sriwijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jme.10.3.8746.425-444

Abstract

By modeling learning students enjoy learning and doing mathematics in new ways. This study aimed firsly to produce senior high school mathematics modeling tasks, lesson plan, and student worksheet for valid mathematical learning; secondly, to produce senior high school mathematics modeling, lesson plan, and student worksheet for practical mathematics learning; lastly, to produce senior high school mathematics modeling tasks, lesson plan, and student worksheet for potentially effective mathematics learning. This study used method of development research that consisting of 3 steps, i.e., analysis, design, and evaluation. In the analysis stage, researcher did student analysis, curriculum, and mathematical modeling. Second stage are to design and product. Finally, researchers applied a design of formative evaluation consists of self-evaluation, one-to-one, experts review, small group, and field test. Based on experts review, one-to-one, small groups, and field test were obtained valid, practical, and potentially effective, i.e. mathematical modeling tasks, lesson plan, student worksheet to teach mathematical modeling in senior high school and Mathematical modeling tasks and student worksheets to learn mathematical modeling in senior high school.
Studi Eksperimen Unjuk-Kerja Modulasi DBPSK pada Platform Software-Defined Radio (SDR) Marpanaji, Eko; Trilaksono, Bambang Riyanto; Langi, Armein ZR; Kurniawan, Adit
JURNAL TEKNOLOGI TECHNOSCIENTIA Technoscentia Vol 1 No 1 Agustus 2008
Publisher : Lembaga Penelitian & Pengabdian Kepada Masyarakat (LPPM), IST AKPRIND Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/technoscientia.v1i1.373

Abstract

This paper addresses Differential Binary Phase Shift Keying (DBPSK) modulation implemented on SDR platform for the development of digital data communications based on SDR. DBPSK modulation performance perceived at Packet Error Rate (PER) is evaluated in terms of Eb/No or S/N ratio, carrier frequency, bit rate, gain, roll-off factor of root Nyquist filter or root raised cosine filter, and of size of payload from delivered data. Based on this results, the smallest PER could be obtained by setting Eb/No value which is greater than 13 dB, carrier frequency of at least 0,3 MHz, optimum bit rate of 256 kbps, optimum range payload size of 2000 up to 4000 bytes, and roll-off factor of Nyquist or root-raised cosine filter of 0.1<alfa<0.9.
Kajian Pengembangan Dry Port Jebres Guna Mendukung Pergerakan Angkutan Barang dengan Mempertimbangkan Tingkat Pelayanannya Wardhana A.S, Wisnu; Riyanto, Bambang; Setiadji, Bagus Hario
Jurnal Pembangunan Wilayah dan Kota Vol 17, No 1 (2021): JPWK Volume 17 No. 1 March 2021
Publisher : Universitas Diponegoro, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/pwk.v17i1.25198

Abstract

The existing railway network connecting Jebres Dry Port with Tanjung Emas Port is expected to support the mobility of goods within its area of service known to have a high potential. However, the progress of Jebres Dry Port has not been fully maximized as expected due to various obstacles and issues in its development. Therefore, this research aims to evaluate the service level, influencing factors, and formulate the development strategy of goods transportation in Dry port Jebres. The data was collected through observation and questionnaire method, and for Importance Performance Analysis method for service level was used for the variable of six key drivers in Sislognas (National Logistic System), and SWOT analysis to formulate the development strategy. The analysis of service level of Jebres Dry port indicated that generally the respondent is not satisfied with the goods transportation through Jebres Dry Port. Furthermore, the internal and external factors analysis revealed that IFAS = 1,824 and EFAS = 2,780, where the appropriate strategy for Jebres Dry Port development is harvest or divest (Quadrant VI, Matrix I-E). The strategy that can be developed is by using existing competitive advantage to exploit available market potentials. In the short term, the development strategy is made by improving the service for customers by improving the main priority indicators resulted from the analysis. In the long term in the future, it is still possible to relocate Jebres Dry Port.  
Wireless Sensor Networks For Volcano Activity Monitoring: A Survey Hulu, Elisati; Riyanto, Bambang; Widyantoro, Sri
Scientific Journal of Informatics Vol 2, No 1 (2015): May 2015
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/sji.v2i1.4528

Abstract

Pemantauan gunung api merupakan salah satu bidang penerapan Wireless Sensor Network (WSN). WSN digunakan pertama kali untuk pemantauan gunung api di gunung Tungurahua, Ekuador Tengah pada tahun 2004. Selanjutnya diterapkan pada riset di gunung Reventador, Ekuador Utara dengan 16 sensor digunakan untuk menangkap sinyal seismik dan akustik. Pada kedua riset ini, desain jaringan dan algoritma dibangun untuk menangkap raw-data sinyal seismik dan akustik, dan mengirimnya ke base station. Seperti dua riset sebelumnya, proyek OASIS membangun WSN yang robust untuk memperoleh raw-data sebanyak-banyaknya dengan real time, kontinu dan kualitas sinyal yang high-fidelity. Berbeda dengan riset WSN untuk pemantauan gunung api sebelumnya, riset Rui Tan, dkk. dan Guojin Liu, dkk. mengembangkan WSN untuk pemantauan gunung api secara real time, in-situ dan long-lived tanpa transmisi raw-data ke base station. WSN dan algoritma didesain dengan membangun algoritma pemrosesan in-network untuk mendeteksi gempa vulkanik, menentukan onset time dari gelombang yang biasa muncul pada saat terjadi gempa.
Obstacle Avoidance Method for a Group of Humanoids Inspired by Social Force Model Ali Sadiyoko; Bambang Riyanto Trilaksono; Kusprasapta Mutijarsa; Widyawardana Adiprawita
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 6, No 2 (2015)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2015.v6.67-74

Abstract

This paper presents a new formulation for obstacle and collision behavior on a group of humanoid robots that adopts walking behavior of pedestrian crowd. A pedestrian receives position information from the other pedestrians, calculate his movement and then continuing his objective. This capability is defined as socio-dynamic capability of a pedestrian. Pedestrian’s walking behavior in a crowd is an example of a sociodynamics system and known as Social Force Model (SFM). This research is trying to implement the avoidance terms in SFM into robot’s behavior. The aim of the integration of SFM into robot’s behavior is to increase robot’s ability to maintain its safety by avoiding the obstacles and collision with the other robots. The attractive feature of the proposed algorithm is the fact that the behavior of the humanoids will imitate the human’s behavior while avoiding the obstacle. The proposed algorithm combines formation control using Consensus Algorithm (CA) with collision and obstacle avoidance technique using SFM. Simulation and experiment results show the effectiveness of the proposed algorithm.
Nonlinear Dynamic Modeling of a Fixed-Wing Unmanned Aerial Vehicle: a Case Study of Wulung Fadjar Rahino Triputra; Bambang Riyanto Trilaksono; Trio Adiono; Rianto Adhy Sasongko; Mohamad Dahsyat
Journal of Mechatronics, Electrical Power and Vehicular Technology Vol 6, No 1 (2015)
Publisher : National Research and Innovation Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/j.mev.2015.v6.19-30

Abstract

Developing a nonlinear adaptive control system for a fixed-wing unmanned aerial vehicle (UAV) requires a mathematical representation of the system dynamics analytically as a set of differential equations in the form of a strict-feedback systems. This paper presents a method for modeling a nonlinear flight dynamics of the fixed-wing UAV of BPPT Wulung in any conditions of the flight altitude and airspeed for the first step into designing a nonlinear adaptive controller. The model was formed into 10-DOF differential equations in the form of strict-feedback systems which separates the terms of elevator, aileron, rudder and throttle from the model. The model simulation results show the behavior of the flight dynamics of the Wulung UAV and also prove the compliance with the actual flight test results.
Co-Authors Abdurrahman - Abikarami Anandadiga Adi Trisna Nurwijaya Adit Kurniawan Agung Surya Wibowo Ali Sadiyoko Anandadiga, Abikarami Arief Syaichu Rohman Arief Syaichu-Rohman Arief Syaichu-Rohman Arief Syaichu-Rohman Armein Z.R. Langi Arry Akhmad Arman Asep Najmurrokhman Astri Purnama Dewi Azarya Pramayudo Bagus Hario Setiadji Bambang Bagus Harianto Bomo S. Wibowo Bomo S. Wibowo Budi Rahardjo Cahyuning Isnaini, Cahyuning Darmawijoyo, Darmawijoyo Doni Ramadhan, Doni Dwi H. Widyantoro Dwi Hendratmo Widyantoro E. Aminudin Aziz E. Aminudin Aziz E. Aminudin Aziz Edvin Ramadhan Edvin Ramadhan Edwin Muhammad Puji Syamsudin Eko Marpanaji Elisati Hulu Emma Marsella Enda Esyudha Pratama, Enda Esyudha Fadjar Rahino Triputra Fadjar Rahino Triputra, Fadjar Rahino Fiqqih Faizah Gede Agus Andika Sani Gugup Kismono Hari Muhammad Hendrawan Hendrawan Hinggo S, Hichmaed Tachta Ibrahin Hakim Ibrahin Hakim Iping Supriana Suwardi Irani Hoeronis Irma Husnaini Jogiyanto Hartono Judhi Santoso, Judhi Kenko Uchida Kenko Uchida Kusprasapta Mutijarsa Kustiariyah Tarman Lady Silk Moonlight Langi, Armein ZR Lazuardi Anggono Lazuardi Anggono Masayu L. Khodra Masayu Leylia Khodra Modestus Oliver Asali Mohamad Dahsyat Mohamad Dahsyat, Mohamad Mohammad Dimas Muhammad Adi Khairul Anshary Muhammad Nur Kholish Abdurrazaq Muhammad Ridho Rosa Muhammad Riyansyah Muhammad Zakiyullah Romdlony Nur Listiawati, Nur Nurwijaya, Adi Trisna Pratama Budi Wijayanto Pratiwi, Ghina Eka Rajesri Govindaraju Ramadhan, Edvin Ratu Ilma Indra Putri Rianto Adhy Sasongko, Rianto Adhy Rila Mandala Riyansyah, Muhammad Rusdy A. Siroj Sani, Gede Agus Andika Saripudin Saripudin Seno Adi Putra Simon Sili Sabon, Simon Sili Sirait, Raisyicha Mutik Siswantari Sri Widyantoro, Sri Subijanto Syafrudin Syafrudin Tjong Wan Sen Toto Indriyanto Trilaksini, Wini Trio Adiono Wahyu Ramadhan Wakhyu Dwiono Wardhana A.S, Wisnu Wibowo, Slamet Widowati, Widowati Widyawardana Adiprawita Widyawardana Adiprawita, Widyawardana Widyawardhana Adiprawita Wijayanto, Pratama Budi Wini - Trilaksani Wirda, Yendri Wrastawa Ridwan Wulandari, Ayu Septi Zulkardi Zulkardi Zulkardi