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: Mooring and Anchoring Services Enhancement for Purse Seiner at Pengambengan Fishing Port
Abstrak: Pelabuhan Perikanan Nusantara (PPN) Pengambengan memiliki fungsi pemerintahan berupa pelayanan jasa tambat labuh kapal perikanan. Jasa tambat labuh tersebut dirasa kurang karena terdapat 20 kapal slerek (Purse Seine) yang memilih untuk berlabuh di luar kolam pelabuhan. Penelitian ini bertujuan untuk mengoptimalkan jasa tambat labuh kapal slerek dengan mengidentifikasi aktivitas pendaratan hasil tangkapan serta faktor-faktor yang mempengaruhi nelayan untuk menambatkan kapal, kemudian dirumuskan strategiyang dapat diambil oleh pihak pelabuhan. Penelitian dilakukan melalui observasi secara langsung dan wawancara terhadap nelayan dan aparatur pelabuhan menggunakan metode purposive sampling. Hasil penelitian menunjukkan bahwa terdapat penurunan pendapatan retribusi sebesar Rp146.804.400,00 per tahun akibat nelayan yang memilih untuk berlabuh di luar kolam. Didapatkan pula faktor yang mengakibatkan nelayan tidak bertambat di dermaga seperti sedimentasi, tarif mahal, letak kapal tidak teratur, dan tidak adanya hukum yang memaksa. Strategi kemudian dirumuskan menggunakan pembalikan akar masalah pada diagram fishbone., Pengambengan fishing port had government function in the form of mooring and anchoring services for fishing vessels. The services was inadequate since there were 20 purse seiners anchoring outside the pool. This research aims to optimize purse seiners mooring services by identify unloading activities and factors that influence fishermen to moor ships, then formulating strategies that can be done by the port. The research was conducted through direct observation and interviews with fishermen and port officials using the purposive sampling method. The results show that there was reduction in income for IDR 146.804.400,00 per year due to fishermen choose to be anchoring outside the pond. It was also found that factors resulted in fishermen not mooring at the wharf, such as sedimentation, high rates, irregular boat locations, and the absence of compelling laws. The strategy was then formulated by reversing the root cause from fishbone diagram.
Keyword: sedimentasi, pelabuhan perikanan, tambat labuh, anchoring, fishing port, sedimentation

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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