Judul: Pemanfaatan Citra Satelit SNPP/VIIRS/DNB dan Vessel Monitoring System untuk Pengawasan Kapal Perikanan di Taman Wisata Perairan Kepulauan Anambas
Abstrak: Terjadinya upaya penangkapan ikan pada zona larang tangkap, yaitu zona inti, zona pemanfaatan, dan zona lainnya menjadi permasalahan yang sedang terjadi di Taman Wisata Perairan (TWP) Kepulauan Anambas. Penelitian ini bertujuan untuk memetakan aktivitas kapal penangkapan ikan dari data VBD dan VMS selama satu tahun, membandingkan data VBD, data VMS dengan rekap data pelanggaran, dan memetakan daerah rawan pelanggaran di TWP Kepulauan Anambas. Penelitian ini memanfaatkan data VIIRS Boat Detection (VBD) dan Vessel Monitoring System (VMS). Analisis yang digunakan yaitu deskriptif, komparatif dan overlay. Hasil penelitian menunjukkan bahwa VBD merekam lebih banyak titik kapal dibandingkan VMS. Terdapat perbedaan antara data VBD dan VMS serta data pelanggaran dari tim pengawas TWP Kepulauan Anambas dengan gap data sekitar 72% dan matching data sekitar 19%. Daerah rawan pelanggaran merupakan zona larang tangkap, yaitu zona pemanfaatan, zona inti, dan zona lainnya yang tidak masuk kedalam wilayah pengawasan oleh pengelola TWP Kepulauan Anambas. Rekomendasi tindakan pengembangan pengawasan untuk pengelola TWP Kepulauan Anambas yaitu pemanfaatan data satelit VBD dan VMS sebagai sistem pendeteksi upaya penangkapan oleh kapal diatas 30 GT, memfokuskan beberapa kapal pengawas didaerah inti yang terindikasi rawan terhadap pelanggaran, mengembangkan sistem pantauan hingga mendapatkan informasi secara real-time aktivitas kapal perikanan, mengembangkan sistem alert warning. Kata Kunci: overlay, peta interaktif, Vessel Monitoring System, VIIRS Boat Detection, zona larang tangkap, The occurrence of fishing efforts in the fishing zone, namely the core zone, utilization zone, and other zones, is a problem in the Anambas Islands Water Tourism Park (TWP). The study aims to map fishing boat activity from VBD and VMS data for one year, compare VBD data, VMS data with breach data recaps, and map breach-prone areas in the Anambas Islands TWP. This study utilizes VIIRS Boat Detection (VBD) and Vessel Monitoring System (VMS) data. The analysis used is descriptive, comparative and overlay. The results showed that VBD recorded more ship points than VMS. There is a difference between VBD and VMS data and data breaches from the Anambas Islands TWP supervisory team with a data gap of about 72% and matching data of about 19%. Violation prone areas are no-take zones, namely utilization zones, core zones, and other zones not included in the surveillance area by the management of TWP Anambas Islands. Recommendations for surveillance development actions for the management of TWP Anambas Islands, namely the utilization of VBD and VMS satellite data as a detection system for capture efforts by ships over 30 GT, focusing several surveillance vessels in the core areas that are indicated to be prone to violations, developing monitoring systems to obtain information in real time fishing boat activity, developing an alert warning system. Keywords: interactive map, overlay, Vessel Monitoring System, VIIRS Boat Detection, no catch zone
Keyword: Vessel Monitoring System, VIIRS Boat Detection, TWP Kepulauan Anambas

Judul: Utilization of VIIRS Boat Detection and Vessel Monitoring System for the Surveillance of Light Fishing Vessels in Sawu Sea National Marine Park
Abstrak: Tingginya potensi sumberdaya hayati yang dimiliki Laut Sawu membuat peluang terjadinya pelanggaran penangkapan ikan pada malam hari di Taman Nasional Perairan (TNP) Laut Sawu. Penelitian ini bertujuan untuk memetakan sebaran kapal light fishing yang beroperasi dan mendeteksi kemungkinan adanya aktivitas pelanggaran penangkapan ikan di dalam kawasan TNP Laut Sawu serta merekomendasikan tindakan lanjut pengawasan dan pemantauan kapal penangkapan ikan di TNP Laut Sawu. Penelitian ini memanfaatkan data VIIRS Boat Detection dari Earth Observation Group dan Vessel Monitoring System Direktorat Jenderal Pengawasan Sumber Daya Kelautan dan Perikanan KKP selama tahun 2021. Analisis data yang digunakan adalah analisis spasial dan analisis deskriptif. Hasil penelitian menunjukan adanya aktivitas penangkapan ikan yang dilakukan oleh kapal light fishing di TNP Laut Sawu. Aktivitas kapal penangkapan ikan ditemukan pada sekitar Pulau Timor, Sumba, Sabu, Dan Rote. Terdapat deteksi kapal yang diindikasi melakukan pelanggaran penangkapan ikan, jumlah indikasi pelanggaran ditemukan paling banyak pada bulan Januari, Februari, dan Desember tahun 2021, masing masing mencapai 229 deteksi, 231 deteksi dan 167 deteksi. Rekomendasi tindakan lanjut untuk pengawasan dan pemantauan kapal penangkapan ikan di TNP Laut Sawu yaitu memberikan sosialisasi mengenai ketentuan pada setiap zona, peringatan untuk kapal besar yang masuk kawasan konservasi, meningkatkan jumlah patroli serta memanfaatkan citra satelit., The high potential of biodiversity resources in the Sawu Sea creates opportunities fishing violations in the Sawu Sea National Marine Park. This study aims to map the distribution of light fishing vessels operating in the Sawu Sea National Marine Park, detect potential fishing violation activities within the area, and recommend further actions for monitoring and supervising fishing vessels in the Sawu Sea. This study utilizes VIIRS Boat Detection data from the Earth Observation Group and the Vessel Monitoring System of the Directorate General of Marine and Fisheries Resource Surveillance, Ministry of Maritime Affairs and Fisheries, during the year 2021. The data analysis methods employed include spatial and analysis descriptive analysis. The research findings reveal fishing activities conducted by light fishing vessels in the in the Sawu Sea National Marine Park. Fishing vessel activities were found around the islands of Timor, Sumba, Sabu, and Rote. There were vessel detections indicating fishing violation activities, with the highest number of potential violation occurring in January, February, and December 2021, reaching 229 detections, 231 detections, and 167 detections, respectively. Recommendations for further actions in the monitoring and supervision of fishing vessels in the Sawu Sea include conducting awareness campaigns regarding regulations in each zone, issuing warnings to large vessels entering conservation areas, increasing patrol frequencies, and utilizing satellite imagery.
Keyword: kawasan konservasi, light fishing, pengawasan, VIIRS Boat Detection (VBD), Vessel Monitoring System (VMS)

Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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