Judul: Fishermen's Understanding of Shipping Navigation Aids at Muara Angke Fishing Port
Abstrak: Sarana bantu navigasi pelayaran (SBNP) merupakan peralatan atau sistem yang berada di luar kapal. Sistem ini didesain dan dioperasikan untuk meningkatkan keselamatan dan efisiensi bernavigasi kapal atau lalu lintas kapal dan berperan penting dalam bidang pelayaran domestik maupun internasional. Penelitian ini bertujuan untuk menilai pemahaman nelayan terhadap pentingnya keberadaan sarana bantu navigasi pelayaran dan alur pelayaran di PPN Muara Angke. Penelitian ini menggunakan metode survey dengan nelayan kapal perikanan sebagai nara sumber. Hasil penelitian menunjukkan sarana bantu navigasi pelayaran yang terdapat di Muara Angke berdasarkan jenisnya yaitu terdapat rambu suar dan pelampung tanda untuk jenis visual, radio untuk jenis elektronik dan tidak ditemukan untuk jenis audible. Tingkat pemahaman nelayan terhadap sarana bantu navigasi berada dalam kategori tidak paham. Nelayan yang paham terhadap sarana bantu navigasi pelayaran hanya 30%. Nahkoda kapal yang mengetahui apa itu SBNP hanya 23,33% dan yang tidak mengetahui apa itu SBNP cukup besar yaitu 76,67%., Navigation aids are equipment or systems outside the ship. This system is designed and operated to improve the safety and efficiency of ship navigations or ship traffics and plays an important role in the regional and international shipping area. This study aims to increase fishermen's understanding of the importance of the existence of shipping navigation aids and shipping channels at Nusantara Fishing Port Muara Angke. The study was conducted by Survey with fishing vessel’s Fisherman Captaints as informants. The results of the study showed that the shipping navigation aids found at Muara Angke were based on their type, such as lighthouses and sign buoys for visual types, radio for electronic types, but there were not found for the audible type. The level of fishermen who understand the navigation aids were in the category of not understanding. Only 30% of fishermen who understand shipping navigation aids. Only 23.33% of ship captains who know what the shipping navigation aids were, and those who did not know what navigation aids were was quite large, 76.67%.
Keyword: Pengetahuan, PPN Muara Angke, SBNP

Judul: Occupational Safety and Health at the Muara Angke Fishing Port
Abstrak: Pelabuhan perikanan yang memiliki peranan penting pada sektor perikanan khususnya perikanan tangkap harus mampu melayani pengguna pelabuhan dalam proses pendaratan ikan sampai proses distribusi, maka dari itu pelabuhan perikanan harus mempunyai fasilitas yang menunjang kegiatan pada bidang perikanan tangkap. Fasilitas yang terdapat di Pelabuhan perikanan terbagi menjadi tiga, yaitu fasilitas pokok, fungsional, dan penunjang. Penelitian ini bertujuan untuk mengetahui ketersediaan fasilitas dan mengidentifikasi pengelolaan guna mendukung keselamatan dan kesehatan kerja. Penelitian ini menggunakan metode observasi lapang dengan nelayan kapal <30 GT dan pihak pengelola fasilitas pelabuhan perikanan yang dijadikan sebagai responden. Hasil penelitian menunjukkan bahwa fasilitas yang terdapat di PPN Muara Angke terbagi tiga, pokok, fungsional, serta penunjang. Tingkat pemenuhan fasilitas di PPN Muara Angke guna menunjang keselamatan dan kesehatan kerja sebesar 69,01%, sedangkan struktur organisasi PPN Muara Angke dalam upaya pengelolaan fasilitas yang mendukung keselamatan dan kesehatan kerja masih dalam tahap upaya peningkatan fasilitas dengan persentase sebesar 76%., Fishing ports which have an important role in the fisheries sector, especially capture fisheries, must be able to serve port users in the process of landing fish to the distribution process, therefore fishing ports must have facilities that support activities in the capture fisheries sector. The facilities at the fishing port are divided into three, namely basic, functional and supporting facilities. This study aims to determine the availability of facilities and identify management to support occupational safety and health. This study used the field observation with fishing vessels <30 GT and the management of fishing port facilities as respondents. The results showed that the facilities at the Muara Angke PPN were divided into three, main, functional and supporting. The level of fulfillment of facilities at the Muara Angke PPN to support occupational safety and health is 69,01%, meanwhile the organizational structure of PPN Muara Angke in the effort to manage facilities that support occupational safety and health is still in the stage of improving facilities with a percentage of 76%.
Keyword: facilities, occupational safety and health, PPN Muara Angke, fasilitas, keselamatan dan kesehatan kerja

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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