Judul: Environmental Friendliness Level of Fishing Gear Based at Karangantu Nusantara Fishing Port
Abstrak: Konflik antar nelayan karena penggunaan alat tangkap merusak lingkungan terjadi di PPN Karangantu. Penelitian ini bertujuan untuk mengidentifikasi alat tangkap, mengevaluasi tingkat keramahan lingkungan alat tangkap, menentukan analisis kelayakan usaha alat tangkap dan merumuskan rekomendasi pengganti alat tangkap yang tidak ramah lingkungan. Analisis yang digunakan adalah analisis deskriptif, CCRF, skala likert, dan analisis kelayakan usaha. Nelayan sekitar PPN Karangantu didominasi oleh nelayan skala kecil. Hasil penelitian diperoleh skor keramahan pancing 33.75; bagan perahu 31,67; jaring rajungan 31; dan bagan tancap 30 menjadi alat tangkap sangat ramah lingkungan, jaring rampus 28,1 kurang ramah lingkungan; dan jaring arad 22,6 tidak ramah lingkungan. Hasil perhitungan kelayakan diperoleh bagan tancap menjadi alat tangkap yang paling untung dengan revenue cost ratio 1,61 dan payback period 0,31. Jaring arad dapat digantikan dengan alat tangkap pancing berdasarkan tingkat keramahan lingkungan., Conflicts among fishers due to the use of environmentally damaging fishing gear occur at Karangantu Nusantara Fishing Port. This study aims to identify fishing gear, evaluate the environmental friendliness of fishing gear, determine the feasibility analysis of fishing gear business, and formulate recommendations for replacing non-environmentally friendly fishing gear. The analyses used are descriptive analysis, CCRF, Likert scale, and business feasibility analysis. The fishermen around Karangantu Nusantara Fishing Port are predominantly smallscale fishers. The results of the study obtained the following environmental friendliness scores: handline 33.75; boat lift net 31.67; crab net 31; and lift net 30, which are classified as very environmentally friendly fishing gear, rampus net 28.1 is less environmentally friendly, and arad net 22.6 is not environmentally friendly. The feasibility calculation results show that stationary chart is the most profitable fishing gear with a revenue cost ratio of 1.61 and a payback period of 0.31. Arad net can be replaced with handline based on the level of environmental friendliness.
Keyword: alat tangkap, Payback Period, CCRF, Tingkat keramahan lingkungan, Revenue Cost Ratio

Judul: Critical Point and Strategies for Handling Enviromental Friendly Fish at the Palabuhanratu Fishing Port, Sukabumi
Abstrak: Potensi perikanan di PPN Palabuhanratu tinggi, namun penanganan ikan hasil tangkapan dan komponen sisanya masih belum maksimal. Penelitian ini bertujuan untuk menganalisis proses penanganan dan mutu ikan hasil tangkapan, serta menentukan titik kritis dan rekomendasi strategi penanganan ikan hasil tangkapan yang ramah lingkungan untuk diterapkan di PPN Palabuhanratu, Sukabumi. Metode yang digunakan yaitu survei dengan analisis deskriptif. Penanganan ikan hasil tankapan dapat ditingkatkan dengan memperhatikan titik kritis penanganan ikan hasil tangkapan yaitu: Pengelompokan dan peletakan ikan berdasarkan hari penangkapan; peralatan yang digunakan dalam proses pendaratan; upaya mempertahankan suhu ideal ikan selama proses; pembersihan ikan hasil tangkapan. Rekomendasi strategi penanganan ikan hasil tangkapan yang ramah lingkungan untuk diterapkan di PPN Palabuhanratu, Sukabumi, yaitu: Meningkatkan sosialisasi tentang pentingnya menangani ikan hasil tangkapan dengan baik dan kebersihan lingkungan pelabuhan termasuk tentang sistem pengelolaan sampah; melengkapi peralatan, bahan dan fasilitas penanganan ikan hasil tangkapan; pengaturan terkait pengelolaan limbah dan pemberian sanksi, agar nelayan tidak membuang sampah ke laut; meningkatkan pengawasan mutu proses produksi perikanan agar meningkatkan kesadaran pelaku usaha untuk melakukan penanganan dengan baik. Kata kunci: mutu, penanganan, ramah lingkungan, SWOT, titik kritis, Fisheries potential in Palabuhanratu fishingport is high, but the handling of caught fish and the remaining components is still not optimal. This study aims to analyze the handling process and quality of caught fish, as well as determine critical points and recommendations for environmentally friendly fish handling strategies to be applied at Palabuhanratu PPN, Sukabumi. The method used is a survey with descriptive analysis. Handling of caught fish can be improved by paying attention to critical points for handling caught fish, namely: Grouping and placing of fish based on the day of catching; equipment used in the landing process; efforts to maintain the ideal temperature of the fish during the process; cleaning of caught fish. Recommendations for environmentally friendly caught fish handling strategies to be implemented at PPN Palabuhanratu, Sukabumi, namely: Increasing socialization about the importance of handling caught fish properly and cleanliness of the port environment, including the waste management system; equip equipment, materials and facilities for handling caught fish; arrangements related to waste management and sanctions, so that fishermen do not throw garbage into the sea; improve the quality control of the fishery production process in order to increase the awareness of business actors to carry out proper handling. Keywords: critical point, environmentally friendly, handling, organoleptic, SWOT
Keyword: Mutu, Penanganan, Ramah Lingkungan, SWOT, Titik Kritis

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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