Judul: Feasibility of implementing Good Fish Handling Practies on  Fishing Vessels at Bitung Ocean Fishing Port
Abstrak: Ikan merupakan produk yang mudah rusak dan butuh penanganan yang baik agar mutu ikan tetap dalam kualitas baik. Penerapan penanganan ikan secara baik dan benar sangat perlu dilakukan, untuk menjaga nilai ekonomis ikan. Tujuan penelitian ini ialah mendeskripsikan proses penanganan ikan di kapal perikanan di Pelabuhan Perikanan Samudera (PPS) Bitung, mengobservasi CPIB di kapal perikanan hingga ke transportasi pengangkut di PPS Bitung, memetakan potensi risiko penurunan mutu selama proses penanganan ikan di kapal perikanan hingga ke transportasi pengangkut di PPS Bitung. Penelitian ini menggunakan metode oberservasi lapang. Hasil penelitian menunjukkan alur penanganan ikan di PPS Bitung dimulai dari ikan ditangkap dan dimasukkan ke dalam palka, hingga ikan diangkut menggunakan tranportasi ke Unit Pengolah Ikan (UPI). Penerapan Cara Penanganan Ikan yang Baik (CPIB) pada kapal perikanan di PPS Bitung ditemukan penyimpangan 1 mayor, 4 minor. Analisis risiko penurunan mutu pada ikan setelah dilakukan pemetaan risiko di ditemukan empat kategori risiko 6 high, 3 medium, dan 1 low., Fish is a product that is easily damaged and requires good handling so that the quality of the fish remains good. Implementing good and correct fish handling is very necessary to maintain the economic value of fish. The aim of this research is to describe the process of handling fish on fishing vessels at the Bitung Ocean Fishing Port (PPS), observing CPIB on fishing vessels to transport at PPS Bitung, calculating the potential risk of quality degradation during the process of handling fish on fishing vessels to transport at PPS Bitung. PPS Bitung. This research uses the accidental sampling method. The results of the research show that the flow of fish handling at PPS Bitung starts from the fish being caught and put into the hold, until the fish is transported using transportation to the Fish Processing Unit (UPI). The implementation of Good Fish Handling Practices (CPIB) on fishing vessels at PPS Bitung found 1 major, 4 minor deviations. Analysis of the risk of mut reduction in fish after carrying out risk mapping found four risk categories: 6 high, 3 medium, and 1 low.
Keyword: Bitung, fish handling, risks

Judul: Fishing Port Support in Efforts to Improve the Quality of Fresh Tuna Fish at Bitung Fishing Port
Abstrak: Tuna merupakan komoditas unggulan di PPS Bitung namun, diketahui bahwa mutu tuna relatif rendah. Tujuan penelitian ini adalah menilai kesesuaian penanganan dan dukungan pelabuhan serta merumuskan strategi peningkatan mutu ikan tuna segar di PPS Bitung. Pengumpulan data dilakukan melalui wawancara dengan nahkoda kapal dan pihak pelabuhan. Analisis yang digunakan adalah analisis komparatif deskriptif, analisis regresi linier berganda serta menggunakan skala likert dan matriks Strengths, Weakness, Opportunities, Threats (SWOT). Hasil penelitian menunjukkan nilai rata-rata keseluruhan terkait kesesuaian peralatan dan penanganan ikan tuna di PPS Bitung yaitu sebesar 53,22%. Peranan PPS Bitung dalam mendukung peningkatan ikan tuna segar dilihat dari segi fasilitas dan pelayanan dalam kategori baik. Strategi yang dapat dipertimbangkan dalam peningkatan mutu ikan tuna segar adalah penyebaran informasi terkait standar penanganan ikan yang baik dan benar, pengoptimalan penerapan standar penanganan ikan yang baik dan benar sesuai dengan Permen KP No. 7 tahun 2019, Inspektor mutu memberikan informasi terkait harga berdasarkan grade atau mutunya., Tuna is a leading commodity at Oceanic Fishing Port Bitung however, it is known that the quality of tuna is relatively low. The purpose of this study was to assess the suitability of handling and port support and formulate strategies to improve the quality of fresh tuna at PPS Bitung. Data collection was conducted through interviews with ship captains and port authorities. The analysis used was descriptive comparative analysis, multiple linear regression analysis and using Likert scale and Strengths, Weakness, Opportunities, Threats (SWOT) matrix. The results showed that the overall average value related to the suitability of equipment and handling of tuna fish at PPS Bitung was 53.22%. The role of PPS Bitung in supporting the improvement of fresh tuna fish in terms of facilities and services in the good category. Strategies that can be considered in improving the quality of fresh tuna are disseminating information related to good and correct fish handling standards, optimizing the application of good and correct fish handling standards in accordance with KP Regulation No. 7 of 2019, Quality inspectors provide information related to prices based on grade or quality.
Keyword: mutu, peran pelabuhan, PPS Bitung, standar penanganan ikan, tuna

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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