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Spectral Characterization in Seaweed, Kappaphycus alvarezii, using AS7285x Spectroscopy Sensor Device Kusuma, Hollanda Arief; Suhendra, Tonny; Ilhamdy, Aidil Fadli; Ilhami, Carel Candigia Sahid; Setyono, Dwi Eny Djoko; Lubis, Muhammad Zainuddin
ILMU KELAUTAN: Indonesian Journal of Marine Sciences Vol 30, No 2 (2025): Ilmu Kelautan
Publisher : Marine Science Department Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ik.ijms.30.2.183-191

Abstract

This study explores the spectral characterization of seaweed, Kappaphycus alvarezii, using the SparkFun Triad Spectroscopy Sensor AS7265x to assess the relationship between water content and light intensity. This research aims to provide a foundation for non-destructive monitoring of post-harvest seaweed quality using spectral techniques. The SeaSpec device was constructed using an ESP32 microcontroller, a TFT display, and the AS7265x sensor. Seaweed samples were collected from the coastal area of Karimun Islands and subjected to a controlled drying process at 40°C to determine the water content in the seaweed. The spectral data were recorded across 18 channels in the visible and infrared spectra, highlighting distinct patterns that correlate with varying moisture levels. A multiple linear regression analysis was employed to determine the contributions of individual spectral channels to water content prediction, revealing that each channel has its own unique contribution to the model. Coefficient of determination (R²), percentage error (%), and percentage accuracy (%) were also used to assess model performance. The results indicated that higher water content corresponds to increased light intensity. The analysis indicated that the visible spectrum outperformed the infrared spectrum in predictive accuracy, with an R² value of 0.79 compared to 0.61 for the infrared spectrum. This indicates that the visible light spectrum is more effective in predicting water content in K. alvarezii. The findings underscore the potential of spectral analysis as a reliable method for assessing the physico-chemical properties of seaweeds, advancing the use of optical sensors in aquaculture and environmental monitoring while paving the way for future research.
Review: Split Beam Echo Sounder in Acoustic Systems for Determine Abundance of Fish in Marine Fisheries Lubis, Muhammad Zainuddin; Surya, Ganda; Timbang, Dirgan; Rizki, Fajar; Ardian, Sandi; Hanafi, Aditya; Ariwinata Saragih, Diaz; Pradipta Ramdhani, Bayu; Novanto, Perdi; Ependi, Fikriansyah; Nofranda, M Andrew; Apriliani, Dhilla; Lestari Situmorang, Arini Dewi
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 40 No 1 (2017): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v40i1.388

Abstract

In the ocean, acoustic waves are transmitted into the subsurface ocean will experience scattering (scattering) caused by marine organisms, material distributed, the structure is not homogeneous in seawater, as well as reflections from the surface and the seabed. Estimation of fish stocks in the waters wide as in Indonesia have a lot of them are using the acoustic method. The acoustic method has high speed in predicting the size of fish stocks so as to allow acquiring data in real time, accurate and high speed so as to contribute fairly high for the provision of data and information of fishery resources. Split beam echo sounder comprises two aspects, and a transducer. The first aspect is the high-resolution color display for displaying echogram at some observations and also serves as a controller in the operation of the echo sounder. The second aspect is transceiver consisting of transmitter and receiver. The echosounder divided beam first inserted into the ES 3800 by SIMRAD beginning of the 1980s and in 1985 was introduced to fishermen in Japan as a tool for catching up. Split beam transducer is divided into four quadrants. Factors that contribute affect the value of Target Strength (TS) fish Strength target can generally be influenced by three factors: a target factor itself, environmental factors, and factors acoustic instrument.
APLIKASI GOOGLE EARTH ENGINE UNTUK KLASIFIKASI HABITAT BENTIK PESISIR NONGSA BATAM MENGGUNAKAN ALGORITMA RANDOM FOREST Prabowo, Nico Wantona; Rusli, Ari; Ghazali, Muhammad; Lubis, Muhammad Zainuddin; radityani, Fitri afina
Jurnal Perikanan dan Kelautan Vol 15, No 1 (2025)
Publisher : JURNAL PERIKANAN DAN KELAUTAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33512/jpk.v15i1.33372

Abstract

This study aims to map benthic habitats in the coastal area of Nongsa, Batam, using Sentinel-2A satellite imagery processed using the Random Forest (RF) algorithm on the Google Earth Engine (GEE) platform. The study area includes Teluk Mata Ikan, Tanjung Bemban, and Batu Besar, Nongsa District, Batam City, Kepulauan Riau Province. Field data were obtained through snorkeling surveys and underwater photo documentation in 16-18 August 2024. The four main habitat classes that were successfully identified include coral, sand, seagrass, and rubble (dead coral fragments). The classification results show the dominance of non-living substrates in the form of sand and rubble in most of the study area, while seagrass and coral are distributed in a limited area. Validation of the classification results produced an Overall Accuracy value of 89.90%, indicating a very good level of classification accuracy and suitability. The combination of Sentinel-2A imagery, RF algorithm, and GEE has proven to be effective, efficient, and replicable for mapping tropical benthic habitats spatially and periodically as a basis for sustainable coastal area management.
Pembuatan Peta Foto Udara Menggunakan Drone DJI Phantom 4 RTK dalam Pembelajaran Berbasis Proyek di Tanjung Riau, Kota Batam Roziqin, Arif; Gustin, Oktavianto; Irawan, Sudra; Lubis, Muhammad Zainuddin; Pratama, Rizki Widi; Rassarandi, Farouki Dinda; Sari, Luthfiya Ratna; Chayati, Siti Noor; Raptama, Mulia; Silvia, Ega; Haadi, Maulana Rafly Al; Zahra, Mulyani Aprilia; Sormin, Naomi Septania; Nova, Dithia Mardi; Adha, Muhammad; Sebayang, Amira Leoni Br; Lubis, Alwi Raihan; Nazara, Kasih Riang Bohouni
Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam Vol. 5 No. 2 (2023): Jurnal Pengabdian kepada Masyarakat Politeknik Negeri Batam
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/abdimaspolibatam.v5i2.5542

Abstract

The rapid development of large-scale infrastructure in Indonesia indicates the need for solutions for fast crack applications with accurate results using methods that are efficient in terms of time and data generated. One example of the development of mapping technology in this modern era is aerial photography not only using manned aircraft, but you can also use an unmanned aerial vehicle or UAV (Unmanned Aerial Vehicle). This unmanned aircraft is better known as a drone, which is currently at an affordable price, easy to get and has the ability to shoot like a manned aircraft. Measurements were made using photogrammetric techniques from aerial photographs produced by drones. With results that have high accuracy, and can be done in the shortest possible time, then the use of drones in making topographic maps will be more widely used in the future. In our study and research survey that we conducted in the form of PBL (Project Based Learning) Politeknik Negeri Batam students in community service in the soaking village, Tanjung Riau, Batam Island, namely for making aerial photo maps using the DJI Phantom 4 RTK drone which we carried out in the village soak.
Spatial Variability of Tidal Characteristics in Bintan Coastal Waters: A Case Study of Moco Port, Bakau Bay, and Tanjung Uban Port Alajuri, M. Hasbi Sidqi; Lubis, Muhammad Zainuddin
Journal of Applied Geospatial Information Vol. 9 No. 1 (2025): Journal of Applied Geospatial Information (JAGI)
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jagi.v9i1.7172

Abstract

Tidal dynamics play a crucial role in coastal processes, port operations, and coastal management, particularly in regions characterized by complex oceanographic interactions such as Bintan Island, Riau Islands Province, Indonesia. This study analyzes the spatial variability of tidal characteristics in the coastal waters of Bintan Island at three observation sites, namely Bakau Bay, Tanjung Uban Port, and Moco Port, using global tidal prediction data generated by MIKE Powered by DHI and harmonic analysis based on the Admiralty method. Eight principal tidal constituents (M₂, S₂, K₁, O₁, N₂, P₁, K₂, and Q₁) were examined, and tidal types were classified using the Formzahl number. The results reveal clear spatial variability in tidal harmonic characteristics despite the close geographic proximity of the sites, with the M₂ constituent dominating tidal behavior at all locations, indicating strong lunar control. Significant contributions from diurnal constituents (K₁ and O₁) result in mixed tidal regimes, with Formzahl values of 1.10 at Bakau Bay, 0.66 at Tanjung Uban, and 1.29 at Moco, classifying all sites as mixed tides with a predominance of semidiurnal components. Variations in tidal amplitudes are closely related to local coastal morphology and exposure to open waters, with Tanjung Uban exhibiting the strongest tidal influence. This multi-location analysis provides a comprehensive understanding of spatial tidal variability in Bintan coastal waters and supports coastal planning, port management, and hydrodynamic modeling in the region.
ANALISIS KELAYAKAN DAN STRATEGI PENGEMBANGAN USAHA IKAN LELE ASAP PADA UMKM DI KOTA BANDAR LAMPUNG: FEASIBILITY ANALYSIS AND DEVELOPMENT STRATEGY OF SMOKED CATFISH BUSINESS FOR MSMES IN BANDAR LAMPUNG CITY Witoko, Pindo; Rahayu, Sari; Mujahid, Muhammad; Lubis, Muhammad Zainuddin
Jurnal Teknologi Perikanan dan Kelautan Vol. 17 No. 1 (2026): FEBRUARY 2026
Publisher : Fakultas Perikanan dan Ilmu Kelautan, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24319/jtpk.17.139-150

Abstract

Catfish is the most widely cultivated freshwater fish in Lampung Province, thus having great potential as a raw material for processing businesses, utilized by the Mina Nusantara MSMEs (micro, small, and medium enterprises) in Bandar Lampung City, as the region with the highest GDP (gross domestic product per capita) contribution from the processing industry sector. Mina Nusantara MSMEs still face limitations in business management, capital, marketing, and development strategies. This study aims to analyze business feasibility and formulate a development strategy for the Mina Nusantara smoked catfish business. The business feasibility analysis used net present value (NPV), internal rate of return (IRR), net benefit-to-cost (B/C) ratio, gross benefit-to-cost (B/C) ratio, and payback period (PP). The development strategy was carried out through an analysis of internal and external factors using the IFE and EFE matrices, by mapping the business position in the IFE matrix, formulating strategies using SWOT, and determining strategic priorities using QSPM. The results of the feasibility analysis indicate that the Mina Nusantara smoked catfish business is viable for continued operation and expansion. The feasibility analysis yielded an NPV of 294,327,358 IDR, an IRR of 58.75%, a gross B/C ratio of 1.22, a net B/C ratio of 2.85, and a payback period of one year and five months. The most effective implementation of Mina Nusantara's business development strategy is to strengthen accounting and administrative systems and to develop human resource capabilities and digital technology to support access to financing, improve business performance, strengthen collaboration, and expand the supplier network.
Co-Authors Adi Suryadi Adinda Syahrani Aditya Hanafi Aditya Hanafi Aditya Hanafi Aditya Hanafi, Aditya Adlian Jefiza Afifah Aprilianda Agung Permana Agung Riyadi Ahmad Prasetya Dilaga Alajuri, M Hasbi Sidqi Amanda T Siboro Amanda T Siboro Ananda, Fitriya Ananda, Fitriya Andi . Andriansyah Pratama Daya Anis Rahmi Anjani, Meidy Anjani, Meidy Apriliani, Dhilla Aprilliyanti, Titi Aprilliyanti, Titi Ardian, Sandi Ari Kurniawan Daulay Ari Wibowo Arif Roziqin Arif Roziqin Arif Roziqin Arif Roziqin Arif Roziqin, Arif Arini Dewi Lestari Situmorang Arini Dewi Lestari Situmorang Arini Dewi Lestari Situmorang, Arini Dewi Lestari Ariwinata Saragih, Diaz Batara Benny Hadli Irawan Bintang Budhiman Bryan Felix Simanjuntak Budhi Agung Prasetyo Budhi Agung Prasetyo Budi Baharudin Budi Baharudin Cahyo Budi Nugroho Catur Agus Lukitasari Citra Swari Henora condra antoni Condra Antroni Danar Irianto Daniel Sutopo Pamungkas, Daniel Sutopo Daulay, Ari Kurniawan Daulay, Ari Kurniawan Daya, Andriansyah Pratama Daya, Andriansyah Pratama Dewi Puspa Sari Dewi Puspa Sari, Dewi Puspa Diaz Ariwinata Saragih Dicki Prayogi Dirgan Timbang Dirgan Timbang Dirgan Timbang Dirgan Timbang, Dirgan Dodi Prima Resda Dodi Prima Resda Dwi Anjen Setia Wulandari Dwi Ely Kurniawan Dwi Eny Djoko Setyono Dwi Eny Djoko Setyono, Dwi Eny Djoko Dwiki Novri Ditya Elisa Margareth Sihombing Eni Heldayani Ependi, Fikriansyah Fadli Suandi Fajar Rizki Fajar Rizki Fajar Rizki Fajar Rizki, Fajar Farouki Dinda Rassarandi Farouki Dinda Rassarandi Feby Angelin Garizi Siahaan Feby Angelin Garizi Siahaan Ganda Surya Ganda Surya Ganda Surya Ganda Surya, Ganda Ghazali, Muhammad Ghazali, Muhammad Giu, La Ode M. Gunawan Gultom, Susi Indah Agustina Gultom, Susi Indah Agustina Guspriyanto, Deny Guspriyanto, Deny Haadi, Maulana Rafly Al Hana Cyintia Panjaitan Hanah Khoirunnisa Hanifah Widiastuti Hartono Hartono Hendra Saputra Henry Munandar Manik Herika Muhamad Taki Hidayat Panuntun Hollanda Arief Kusuma Husnul Kausarian Husnul Kausarian Ibrahim, Muhammad Ma'ruf Ibrahim, Muhammad Maruf Idris, Muhammad Kemal Ihsan Saputra Ilhami, Carel Candigia Sahid Indah Ira Kartini Irawan, Benny Haddli Jhon Hericson Purba Kartika Pratiwi Kasih Anggraini Kasih Anggraini Kasih Anggraini Kasih Anggraini, Kasih Keni Sultan Lalu Giat Juangsa Putra Lestari Situmorang, Arini Dewi Lingga Renggana Cannagia Lubis, Alwi Raihan Luthfiya Ratna Sari Luthfiya Ratna Sari Luthfiya Ratnasari Mahendra Kumar Maidel Fani Mandala, Gio Fitra Tirta Mandala, Gio Fitra Tirta Mardianto, Lutfi Marisa Tri Yanti Metta Santiputri Mir'atul Khusna Mufida Mir'atul Khusna Mufida Mira Chandra Kirana Mir’atul Khusna Mufida Muawanah Muawanah Mufida, Mir'atul Khusna Muhammad Adam Muhammad Adha Muhammad Ghazali Muhammad Ghazali Muhammad Ghazali Muhammad Mujahid Muhammad Mujahid Muhammad Sufwandika Nadya Oktaviani Nanda Putra Perkasa Naufal Abdurrahman Naufal Abdurrahman Nazara, Kasih Riang Bohouni Neta, Fandy Nirwana Wau Nirwana Wau Nirwana Wau, Nirwana Nofranda, M Andrew Nova, Dithia Mardi Novanto, Perdi Novita Ayu Dewanti Novita Ayu Dewanti Nur Cahyono Kushardianto Nur Zahrati Janah Nurul Fadilah Nurul Khakhim Okatvianto Gustin Oktavianto Gustin Perananda, Ade Perananda, Ade Perdi Novanto Sihombing Perdi Novanto Sihombing Pindo Witoko Prabowo, Nico Wantona Pradipta Ramdhani, Bayu Pratama, Rizki Widi Pratiwi Dwi Wulandari Pratiwi Dwi Wulandari Pratiwi Dwi Wulandari Radityani, Fitri Afina Rahayu, Sari Rahman Hakim Rahman Hakim Ramadhan Ulil Albab Lubis Ramadhan, Wahyu Rizky Ramadhan, Wahyu Rizky Rapena Tandon Cahayanti Sidabutar Raptama, Mulia Rassarandi, Farouki Dinda Rasyid Alkhoir Lubis Riki Riki Rini Aprilia Siahaan Rivki Ryan Nugraha Riza Fahmi Rizki Irianto Rizki Irianto Rizki Widi Pratama Rizki Widi Pratama Rizky, Fajar Rizky, Fajar Rizwan Bin Khamis Robby Darlinto Silaban Rohana Sari Rokhayati, Yeni Rusli, Ari Sandi Prasetyaningsih Sandy Masdriyanto Sapto Wiratno Satoto Saputri, Dhea Ayu Saputri, Dhea Ayu Sari, Luthfiya Ratna Sarnaen Simanjuntak Satria Bayu Aji Satriya Bayu Aji Satriya Bayu Aji Sebayang, Amira Leoni Br Siahaan, Arta Uly Siahaan, Feby Angelin Garizi Siahaan, Feby Angelin Garizi Siboro, Amanda T. Siboro, Amanda T. Sidik Dwi Pamungkas Sigit Sutikno Sihaloho, Angela Moriana Sihaloho, Angela Moriana Silaban, Robby Darlinto Silaban, Robby Darlinto Silvia, Ega Siti Aminah Siti Noor Chayati Situmorang, Arini Dewi Situmorang, Arini Dewi Sormin, Naomi Septania Sri Pujiyanti Sri Pujiyati Steven Solikin Sudra Irawan Supardianto Supardianto Suzita, Suzita Suzita, Suzita Swono Sibagariang Tian Havwini Tiggi Choanji Tiggi Choanji Tiggi Choanji, Tiggi Tonny Suhendra Totok Hestrianoto Totok Hestrianoto Ulung Jantama Wisha Ulung Jantama Wisha Uuf Brajawidagda Wenang Anurogo Widya Rika Puspita Wikan Jaya Prihantarto Willy Okcandra Zabid, Muhammad Anand Pratama Zabid, Muhammad Anand Pratama Zahra, Mulyani Aprilia Zibar, Zan