Judul: Estimation of Plastic Marine Debris in Handline Vessel Operations Based at Bungus Fishing Port, Padang
Abstrak: Penggunaan plastik yang berlebihan dalam kegiatan penangkapan akan menghasilkan sampah yang dapat merusak dan mencemari lingkungan laut. Tujuan penelitian ini yaitu: mengidentifikasi jenis dan penggunaan plastik pada kegiatan operasi kapal handline, mengestimasi jumlah sampah laut plastik dari kegiatan operasi kapal handline dan merumuskan upaya penanggulangan potensi sampah laut plastik dari kegiatan operasi kapal handline yang berbasis di PPS Bungus. Pengambilan data penelitian dilakukan pada tanggal 10 April – 22 Mei 2023 di PPS Bungus. Penelitian ini menerapkan metode survei terhadap pengelola PPS Bungus dan nelayan/pengurus/pemilik kapal handline yang beroperasi di PPS Bungus Padang. Analisis yang digunakan adalah analisis deskriptif. Hasil penelitian menunjukkan bahwa sampah yang dihasilkan dibagi menjadi 3 kategori umum, yaitu sampah konsumsi, mesin, dan penangkapan. Sampah yang paling dominan jumlahnya (berat) adalah sampah mesin berupa oli bekas. Kapal handline menghasilkan sampah sebanyak 501,82 kg per trip penangkapan. Upaya penanggulangan potensi sampah yang dapat dilakukan pada operasi kapal handline di PPS Bungus yaitu dengan menerapkan konsep pelabuhan perikanan berbasis eco-fihisngport, memberikan sosialisasi yang merata terhadap pemilik/pengurus/nelayan kapal handline terkait aturan dan cara pengelolaan sampah pada kegiatan operasi penangkapan, memberikan sosialisasi terkait “Bank Sampah Sajameh”, dan mengaktifkan kembali fasilitas mesin pencacah plastik untuk mendukung gerakan 4R. Kata kunci: kapal handline, operasi kapal, penanggulangan sampah, plastik, sampah laut, Excessive use of plastic in fishing activities will produce waste that can damage and pollute the marine environment. The objectives of this study are: Identify the type and use of plastic in handline boat operations, estimate the amount of plastic marine debris from handline boat operations, and formulate efforts to overcome the potential for plastic marine debris from handline boat operations based at Bungus Fishing Port. Data collection was conducted from April 10 to May 22, 2023 at Bungus Fishing Port. This research applied the survey method to the manager of Bungus Fishing Port and fishermen/managers/owners of handline vessels operating at Bungus Fishing Port . The analysis used is descriptive. The results show that the waste generated is divided into 3 general categories, namely consumption, machinery, and capture waste. The most dominant waste (by weight) was engine waste in the form of used oil. Handline vessels produce as much as 501,82 kg of waste per fishing trip. Potential waste management efforts that can be carried out on handline vessel operations at Bungus Fishing Port are by applying the concept of an eco fihisngport-based fishing port, providing equal socialization to handline vessel owners/managers/fishermen regarding the rules and methods of waste management in fishing operations, providing socialization related to the "Sajameh Waste Bank", and reactivating plastic shredding machine facilities to support the 4R movement. Keywords: handline vessels, marine debris, plastic, vessel operations, waste management
Keyword: handline vessel, marine debris, plastic, vessel operations, waste management

Judul: Estimation of Waste Generated by Activities of Small Fishing Vessels at the Palabuhanratu Fishing Port
Abstrak: Saat ini, secara umum kondisi pelabuhan perikanan di Indonesia tercemar oleh beberapa bahan seperti; ammonia, sampah organik dan anorganik serta minyak. Bahan pencemar tersebut membuat keadaan pelabuhan menjadi kotor, terutama pada sanitasi dan higienitas yang berpengaruh terhadap penurunan kualitas ikan. Salah satu aktivitas yang berpotensi menyebabkan pencemaran lingkungan pelabuhan adalah aktivitas kapal perikanan. Maka dari itu, penelitian ini bertujuan untuk mengidentifikasi jenis dan komposisi limbah, potensi pemanfaatan limbah, dan perumusan strategi pengelolaan limbah dari kapal. Kajian dilakukan pada kapal pancing ulur, pancing rawai, dan payang di PPN Palabuhanratu. Pendataan dilakukan dengan cara wawancara dan observasi pada seluruh aktivitas kapal. Hasil kajian menunjukkan bahwa komposisi limbah yang dihasilkan kapal sampel didominasi oleh limbah jenis organik tulang ikan, PA(Polyamide), dan kayu secara berurutan menjadi penyumbang terbesar. Ketiga jenis limbah tersebut mempunyai potensi pemanfaatan yang tinggi namun berbanding terbalik dengan kondisi lapangan yang belum ada upaya untuk memanfaatkan. Pengelolaan limbah dari kapal bisa dimulai dengan mengoptimalkan fasilitas, petugas, dan peraturan yang ada dengan penguatan pada pemberlakuan sanksi dan pemantauan., Currently, the condition of fishing ports in Indonesia is polluted by several materials such as; ammonia, organic and inorganic waste, and oil. These pollutants make the condition of the port dirty, especially in sanitation and hygiene which affects the decline in fish quality. One of the activities that have the potential to cause pollution of the port environment is the activity of fishing vessels. Therefore, this study aims to identify the type and composition of waste, potential utilization of waste, and formulating strategies for managing waste from ships. The study was conducted on handline, longline, and payang vessels at PPN Palabuhanratu. Data collection is done by interviewing and observing all ship activities. The results of the study found that the composition of the waste produced by the sample ship was dominated by organic waste, with fish bones, PA (Polyamide), and wood being the largest contributors respectively. The three types of waste have high utilization potential, but compared to field conditions, there is no attempt to get there. Waste management from ships begins with optimizing facilities, officers, and regulations by strengthening the enforcement of sanctions and monitoring.
Keyword: environmental pollution, ship waste, limbah kapal, pencemaran lingkungan, PPN Palabuhanratu

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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