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All Journal International Journal of Electrical and Computer Engineering International Journal of Reconfigurable and Embedded Systems (IJRES) Transmisi: Jurnal Ilmiah Teknik Elektro JURNAL SISTEM INFORMASI BISNIS Jurnal Sistem Komputer TELKOMNIKA (Telecommunication Computing Electronics and Control) Bulletin of Electrical Engineering and Informatics Jurnal Informatika Disease Prevention and Public Health Journal Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik CommIT (Communication & Information Technology) Bulletin of Electrical Engineering and Informatics Jurnal Teknologi Jurnal sistem informasi, Teknologi informasi dan komputer Sinergi Jurnal Edukasi dan Penelitian Informatika (JEPIN) JUITA : Jurnal Informatika International Journal of Advances in Intelligent Informatics Seminar Nasional Informatika (SEMNASIF) Jurnas Nasional Teknologi dan Sistem Informasi Khazanah Informatika: Jurnal Ilmu Komputer dan Informatika JURNAL NASIONAL TEKNIK ELEKTRO KLIK (Kumpulan jurnaL Ilmu Komputer) (e-Journal) Proceeding of the Electrical Engineering Computer Science and Informatics Fountain of Informatics Journal Jurnal Teknologi dan Sistem Komputer Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Jurnal Ilmiah FIFO Emerging Science Journal JIKO (Jurnal Informatika dan Komputer) Jurnal CoreIT Bina Insani ICT Journal JURNAL MEDIA INFORMATIKA BUDIDARMA Jurnal Penelitian Pendidikan IPA (JPPIPA) MUST: Journal of Mathematics Education, Science and Technology IT JOURNAL RESEARCH AND DEVELOPMENT Insect (Informatics and Security) : Jurnal Teknik Informatika Al-MARSHAD: Jurnal Astronomi Islam dan Ilmu-Ilmu Berkaitan JRST (Jurnal Riset Sains dan Teknologi) JITK (Jurnal Ilmu Pengetahuan dan Komputer) JOURNAL OF APPLIED INFORMATICS AND COMPUTING JURNAL REKAYASA TEKNOLOGI INFORMASI Jurnal Informatika Universitas Pamulang Applied Information System and Management ILKOM Jurnal Ilmiah Jiko (Jurnal Informatika dan komputer) MATRIK : Jurnal Manajemen, Teknik Informatika, dan Rekayasa Komputer CYBERNETICS IJID (International Journal on Informatics for Development) JURIKOM (Jurnal Riset Komputer) JUMANJI (Jurnal Masyarakat Informatika Unjani) Informatika : Jurnal Informatika, Manajemen dan Komputer Jurnal Ilmiah Mandala Education (JIME) Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Jurnal Mantik JISKa (Jurnal Informatika Sunan Kalijaga) Buletin Ilmiah Sarjana Teknik Elektro Indonesian Journal of Business Intelligence (IJUBI) bit-Tech Aviation Electronics, Information Technology, Telecommunications, Electricals, and Controls (AVITEC) Jurnal Pengabdian Masyarakat Bumi Raflesia Journal of Robotics and Control (JRC) Journal of Applied Engineering and Technological Science (JAETS) Indonesian Journal of Electrical Engineering and Computer Science Bubungan Tinggi: Jurnal Pengabdian Masyarakat JUKI : Jurnal Komputer dan Informatika JITU : Journal Informatic Technology And Communication Journal of Innovation Information Technology and Application (JINITA) Jurasik (Jurnal Riset Sistem Informasi dan Teknik Informatika) Jurnal Pengabdian Masyarakat Indonesia Jurnal Nasional Pengabdian Masyarakat Jurnal Puan Indonesia Jurnal Informatika Teknologi dan Sains (Jinteks) Techno SIENNA Jurnal Informatika: Jurnal Pengembangan IT Advance Sustainable Science, Engineering and Technology (ASSET) INOVTEK Polbeng - Seri Informatika Al'Adzkiya International of Computer Science and Information Technology Journal Khazanah Informatika : Jurnal Ilmu Komputer dan Informatika JOCHAC Genta Mulia Proceeding of Informatics Collaborations and Dessimenation Meeting (Infocoding)
Sunardi, Sunardi
Universitas Ahmad Dahlan Yogyakarta
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Journal : telkomnika telecommunication computing electronics and control

 1 
TURTLE HEARING CAPABILITY BASED ON ABR SIGNAL ASSESMENT Anton Yudhana; Sunardi Sunardi; Jafri Din; Syed Abdullah; Raja Bidin Raja Hassan
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 8, No 2: August 2010
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v8i2.620

Abstract

Sea turtles have existed for millions of years. International Union for Conservation of Nature (IUCN) has reported that the Hawksbill Turtle (Eretmochelys imbricata) is classified as critically endangered. Turtle excluder device (TED) deployment on shrimpnet fisheries is needed for turtle conservation.TED using sound technique is challenge method in fisheries development.The knowledge on turtle hearing capability is limited. The auditory brainstem response (ABR) assessment is method to determine turtle hearing capability. Turtle hearing assessment is basis to design TED. The objective of this paper is to determine turtle hearing cability by analyze its ABR spectral.The subject is Hawksbill turtle with number 2 turtles ie: 3 and 2 years. The measurement was taken at Pusat Pengurusan Penyu (Turtle Management Centre) Padang Kemunting Masjid Tanah Melaka Malaysia. The results shows that turtle 3 years have peak power frequencies 50.78, 101.6, 152.3, 304.7, 355.5, 457, and 507.8Hz respectively whereas the spectral amplitude is ranging 0.03-32.44% spectral. Turtle 2 years has peak power at 457Hz in whole stimulus frequencies while the spectral amplitude is ranging 0.01-2.5% spectral.
PERANCANGAN PENGUKUR SWR DIGITAL DAN PENGAMAN TRANSMITER FM 88–108 MHz BERBASIS MIKROKONTROLER AT89S51 Sukma Aji; Muchlas Muchlas; Sunardi Sunardi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 5, No 3: December 2007
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v5i3.1368

Abstract

Pada sistem saluran transmisi terdapat tegangan gelombang maju dari transmiter ke antena dan tegangan gelombang pantul dari antena ke transmitter. Nilai tegangan gelombang pantul yang tinggi mengakibatkan kerugian dan kerusakan pada transmitter. Perbandingan gelombang maju dan gelombang pantul disebut Standing Wave Ratio (SWR). Semakin kecil nilai tegangan gelombang pantul, nilai SWR semakin kecil dan efisien. Penelitian ini bertujuan untuk merancang pengukur SWR Digital yang berfungsi membaca nilai SWR dan pengaman transmiter FM dari kerusakan akibat tingginya nilai SWR. Penelitian dilaksanakan dengan eksperimen laboratorium yang dibagi dalam empat tahap: merancang pengukur SWR Digital dan pengaman transmiter FM, merancang perangkat keras penampil nilai SWR berupa 2 digit 7-segmen dan pengaman transmiter FM menggunakan mikrokontroler AT89S51 beserta perangkat lunaknya, menggabungkan hasil rancangan kedua tahap sebelumnya untuk membentuk pengukur SWR Digital dan pengaman transmiter FM dari nilai SWR yang tinggi, dan tahap terakhir menguji alat ukur menggunakan dummy load dengan nilai SWR 1,1. Hasil penelitian menunjukkan bahwa SWR Digital dan pengaman transmiter FM 88-108 MHz berbasis mikrokontroler AT89S51 yang dirancang dapat menghitung nilai SWR pada sistem transmiter dan menampilkanya pada 2 digit 7-segmen dan dapat digunakan sebagai pengendali pengaman transmiter FM  pada rentang frekuensi 88-108 MHz.
SWIMBLADDER ON FISH TARGET STRENGTH Sunardi Sunardi; Anton Yudhana; Jafri Din; Raja Bidin Raja Hassan
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 6, No 2: August 2008
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v6i2.561

Abstract

This paper discusses of Target Strength (TS) for the Selar boops (Oxeye scad) and Megalaspis cordyla (Torpedo scad), the most commercially fish in Malaysia. TS can be determined from in situ measurements and calculation using acoustic fish model. TS value, depth, and position (x-y-z) of fish targeted can be viewed from echogram using FQ-80 Analyzer by in situ measurement. X-ray imaged can be deployed to develop the acoustic fish model. The percentage of length and upper surface area for swimbladder to body fish of Selar boops more than Megalaspis cordyla can be measured after X-ray process. The percentage of width and volume of swimbladders to its each body are no significantly difference for both fish. These data of swimbladder physic are supports the result from in situ measurement which TS of Megalaspis cordyla have more than Selar boops.
PENGENDALIAN KECEPATAN MOTOR DC DENGAN METODE LOOK UP TABLE BERBASIS MIKROKONTROLER AT89C51 Muchlas Muchlas; Sunardi Sunardi; Tri Antoro
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 4, No 1: April 2006
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v4i1.1238

Abstract

Pengaturan kecepatan motor DC dapat dilakukan dengan tiga cara, yaitu: dengan mengubah tahanan rangkaian jangkar (Ra), mengubah fluks magnit () dan mengubah tegangan (V). Tujuan penelitian ini adalah merancang sistem pengendali kecepatan motor DC dengan mengubah tegangan catu motor secra look up table berbasis mikrokontroler AT89C51 yang diharapkan bisa memberikan fleksibilitas yang lebih baik. Perancangan sistem dimulai dari perancangan rangkaian konversi digital ke analog, pengendali motor, sensor kecepatan, tombol keypad, driver LCD, catu daya, interkoneksi hardware dan dilanjutkan perancangan perangkat lunak pengatur sistem kerja pengendali motor. Sensor yang digunakan adalah optocoupler, konversi digital ke analog menggunakan DAC 0808, driver motor menggunakan  transistor BD 137 dan pengatur sistem kerja menggunakan mikrokontroler AT89C51. Hasil penelitian menunjukkan bahwa pengendali motor yang dirancang dapat bekerja dengan akurasi 97,4%.
SOUND OF PADDLE WHEEL ON SEA BASS GROWTH Sunardi Sunardi; Anton Yudhana; Ahmad Syahril Mohd Nawi; Jafri Din; Saberi Mawi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 7, No 1: April 2009
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v7i1.570

Abstract

The objective of this research is sound effect for brackish water for Sea bass (Cynoscion nobilis). Breeding farm 25x100m, 2m of depth, and 6 paddle wheels which generate the sound are available for research. Sound profile has been measured to investigate the amplitude at various measurement points at various depths by using Cetacean hydrophone C304. The output of hydrophone has been analyzed by using SpectraPlus software. For the second measurement, two cages which size 3x3m have been used for life fish habitat. Then, fish put in the edge cage (20), center cage (20), and out of cage (12500). Sound profile has been measured for position-based (edge/center cage), time-based (morning/noon/evening), and point-based. Time series, spectrum frequency, and phase have been analysis. Fish growth progress has been monthly measured at every cage. Fish in the cage is growth as linearly, while fish growth for out of cage is exponentially. Size and weight of fish in the both cages is less than out of cage. This research concludes that sound have no significantly effect for fish growth. Limited mobility to look for food and stress are more influences to fish growth than sound effect.
APLIKASI MIKROKONTROLER AT89C51 PADA MODEL ALAT PEMBERSIH LANTAI Sunardi Sunardi; Wahyu S Aji; Rifkan Firdaus
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 3, No 3: December 2005
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v3i3.1230

Abstract

Teknologi elektronika telah banyak diterapkan dalam kehidupan, dimana hal tersebut sangat membantu pekerjaan. Hanya saja peralatan tersebut banyak yang masih bersifat semi otomatis (lebih 50 % dijalankan/dioperasikan oleh manusia), sehingga masih memerlukan tenaga dan waktu dalam pengerjaannya. Penelitian ini merancang aplikasi mikrokontroler AT89C51 pada model alat pembersih lantai. Alat ini berjalan pada lantai karpet membentuk kotak yang semakin lama akan semakin mengecil. Hasil penelitian menunjukan bahwa telah dapat dirancang suatu mobil yang berfungsi sebagai model alat pembersih lantai berbasis mikrokontroler AT89C51, baik perangkat lunak maupun keras, dengan sensor inframerah sebagai pendeteksi putaran ban. Alat yang dirancang dapat bekerja dengan baik.
Distinguish Sea Turtle and Fish Using Sound Technique in Designing Acoustic Deterrent Device Azrul Mahfurdz; Sunardi Sunardi; H. Ahmad; Syed Abdullah; Nazuki Nazuki
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 13, No 4: December 2015
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v13i4.1827

Abstract

Acoustic is a common method for underwater object classification and to observe fish schools or other marine animals in their environment, but it was never applied on sea turtle. Knowledge about turtle detection using sound is very limited and there are no target strength (TS) recorded before. In this study, an echo voltage reference methodincorporating standard target was used to measure ex situ target strength of two Green Turtle (Chelonian mydas) and three species of fish (Indian scad, Indian Mackerel and Bigeyescad). The echo signal of animals has been observed from echosounder output and every envelope of the echo was digitized at a sampling rate 1MHz using high speed analog to digital converter (USB‑1208HS). The finding shows a significant difference between fish and turtles aged 18 years old. The result also demonstrates that TS increase as age of turtle increase. This result is considered important in designing an acoustic deterrent device. The result reveals that size, surface, and animal body part influence in determining target strength value.
Anchovy-inspired filter algorithm: A bio-inspired optimization approach for high-dimensional benchmark functions Azrul Mahfurdz; Muhammad Muizz Mohd Nawawi; Sunardi Sunardi; Mohd Azriq Abd Aziz
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 24, No 1: February 2026
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v24i1.27594

Abstract

This paper presents the anchovy-inspired filter algorithm (AFA), a novel bio-inspired metaheuristic optimization method motivated by the filter feeding behavior of anchovies. Unlike conventional swarm intelligence algorithms, AFA employs a filtering mechanism in which each agent generates multiple candidate solutions within a local sampling radius and selects the best, mimicking how anchovies filter microscopic prey from seawater. To evaluate its performance, AFA was benchmarked against particle swarm optimization (PSO) and genetic algorithm (GA) using six standard test functions: Sphere, Rosenbrock, Schwefel 1.2, Rastrigin, Griewank, and Ackley in 30-dimensional search spaces. Simulation results demonstrate that AFA consistently outperforms PSO and GA across unimodal and multimodal functions. For unimodal problems such as Sphere, Rosenbrock, and Schwefel 1.2, AFA achieved significantly lower best and mean fitness values, reflecting strong exploitation capability. For multimodal functions including Rastrigin, Griewank, and Ackley, AFA effectively avoided local minima, maintained robustness, and achieved stable convergence with lower variance. Convergence analysis further indicates that AFA steadily approaches near-global optima without premature stagnation. Overall, the results highlight the effectiveness of the filter-based exploitation mechanism in balancing exploration and exploitation. Future research will focus on adaptive filtering strategies, hybrid integration with other metaheuristics, and applications to real-world optimization problems.
Co-Authors Abd. Rasyid Syamsuri Abdul Djalil Djayali Abdul Fadlil Abdul Fadlil Abdul Fadlil Abdul Fadlil Abdul Fadlil Abdul Fadlil Abdul Hadi Achmad Dito Ahmad Azhar Kadim Ahmad Ikrom Ahmad Raditya Cahya Baswara Ahmad Syahril Mohd Nawi Aldi Bastiatul Fawait Fawait Alfian Ma’arif Alwas Muis Anggit Pamungkas Anton Yudhana Anton Yudhana Anton Yudhana Anton Yudhana Apik Rusdiarna Indra Praja Ardi Pujiyanta Ardiansyah Ardiningtias, Syifa Riski Ardiningtias Arief Setyo Nugroho Ariful Aziz Arizona Firdonsyah Asep Setyaji Aulia, Aulia Azrul Mahfurdz Azrul Mahfurdz Azrul Mahfurdz Azrul Mahfurdz Bambang Priambodo Bambang Subana Budi Santosa Deco Aprilliansyah Denis Prayogi Denis Prayogi Dewi Sahara Dewi Sahara Nasution Dewi Soyusiawaty Dewi Soyusiawaty Dian Novianti Doddy Teguh Yuwono Dwi Aryanto Dwi Aryanto Eko Aribowo Eko Handoyo Ermin Ermin Evrynda Widyasari Puspa Dewi Faqihuddin Al-anshori Fatma Nuraisyah, Fatma Fiftin Noviyanto Fijaya Dwi Bima Sakti Putra Fijaya Dwi Bima Sakti Putra Fijaya Dwi Bimasakti Firdonsyah, Arizona Firmansyah Firmansyah Firmansyah Firmansyah Fitriah Fitriyani Tella Fitriyanto, Rachmad Furizal Furizal Furizal Furizal Gema Kharismajati Guguh Makbul Rahmadani Fitra H. Ahmad Hartanta, Agus Jaka Sri Hartini, Sri Haryani Alamsyah Herman Herman Herman Herman Herman Herman Herman Herman Herman Yuliansyah Hermawan Hermawan Hernawan Aji Nugroho Hikmatyar Insani Himawan I Azmi Ibnu Muakhori Ihyak Ulumuddin Iif Alfiatul Mukaromah Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Imam Riadi Irhash Ainur Rafiq Irwansyah Irwansyah Irwansyah Irwansyah Jafri Din Janu Prasetyo januari audrey January Audrey Joko Supriyanto Joko Triyanto Kemal Thoriq Al-Azis Khoir, Syaiful Amrial Krisna Astianingrum Lina Handayani Luh Putu Ratna Sundari Lukman Reza Lukman Reza M Murinto M. Ihya A. Elfatih Mardhiatul Ihsaniah Miftahuddin Fahmi Mirza Sutrisno Mitra Adhimukti Mohd Azriq Abd Aziz Muchamad Kurniawan Muchlas, Muchlas Muchrisal Muchrisal Muchrisal Muflih, Ghufron Zaida Muh. Hajar Akbar Muhammad Amirul Mu'min Muhammad Fauzan Gustafi Muhammad Fauzan Gustafi Muhammad Kunta Biddinika Muhammad Kunta Biddinika Muhammad Muizz Mohd Nawawi Muhammad Nashiruddin Darajat Muhammad Nur Ardhiansyah Muhammad Sabiq Dzakwan Muhammad Sabiq Dzakwan Muntiari, Novita Ranti Murinto Murinto Musri Iskandar Nasution Muzakkir Pangri Nasirudin Nasirudin Nazuki Nazuki Nia Ekawati Nia Ekawati Nugroho, Hernawan Aji Nur Makkie Perdana Kusuma Nur Ratnawati Nuril Mustofa Pahlevi, Ryan Fitrian Panggah Widiandana Pastima Simanjuntak Pradana Ananda Raharja Priyatno Priyatno Puji Ristianto Puriyanto, Riky Dwi Rachmad Fitriyanto Rachmad Very Ananda Saputra Raja Bidin Raja Hassan Rajunaidi Rajunaidi Rani Rotul Muhima Restu Prima Yudha Restu Prima Yudha Rezki Ramdhani Ricky Irawan Putra Rifkan Firdaus Rio Dwi Listianto Rio Ikhsan Alfian Rosmini Rosmini Rudy Ansari Rudy Ansari Rusydi Umar Rusydi Umar Rusydi Umar Rusydi Umar Saberi Mawi Sahiruddin Sahiruddin Saifullah, Shoffan Salsabilla Azahra Putri Saputro, Mochammad Yulianto Andi Sarmini Sarmini Septiyawan Rosetya Wardhana Sharipah Salwa Mohamed Son Ali Akbar Sri Rahayu Astari Sri Rahayu Astari Sri Winiarti Sri Winiarti Subrata, Arsyad Cahya Sukma Aji Supriyanto Suyahman Suyahman Syaiful Khoir Syed Abdullah Syed Abdullah Syifa Riski Ardiningtias Syifa'ah Setya Mawarni Syifa’ah Setya Mawarni Syifa’ah Setya Mawarni Tole Sutikno Tomy Chandra Mahendra Tresna Yudha Prawira Tri Antoro Tristanti, Novi Ulil Amri Ulil Ummi Syafiqoh Virasanty Muslimah Wahyu S Aji Watra Arsadiando Wawan Darmawan Wijaya, Setiawan Ardi Wilda Rina Hasibuan Yana Mulyana Yuniarti Lestari Yuwono Fitri Widodo