Judul: Identification of Potential Hazard in Fishing Vessel Unloading Activities at Bitung Ocean Fishing Port
Abstrak: Aktivitas bongkar merupakan aktivitas yang cukup padat dilakukan di Dermaga PPS Bitung. Kegiatan bongkar hasil tangkapan di PPS Bitung belum adanya SOP mengenai keselamatan saat melakukan operasi bongkar. Penelitian dilakukan dengan tujuan untuk mengidentifikasi kegiatan dan menghitung potensi risiko kegiatan pembongkaran ikan di PPS Bitung. Metode pengumpulan data yang digunakan adalah metode observasi langsung kemudian dianalisis dengan metode HTA (Hierarchy Task Analysis), JSA (Job Safety Analysis) dan analisis deskriptif. Hasil yang diperoleh yaitu terdapat total 40 aktivitas yang dikelompokkan menjadi 3 aktivitas utama yaitu persiapan operasi bongkar, operasi bongkar, dan pasca operasi bongkar, yang memiliki tingkat bahaya dibagi menjadi 5 tingkat bahaya, yaitu 3 (7%) tidak berbahaya, 19 (48%) Ringan, 14 (35%) Menengah, 0 (0%) Berat, dan 4 (10%) Fatal. Pengendalian risiko yang dapat dilakukan untuk memperkecil risiko yaitu dengan meningkatkan kesadaran untuk menggunakan APD pada saat kegiatan bongkar., Unloading activities are quite busy activities carried out at Bitung Ocean Fishing Port Bitung OFP. There is no SOP regarding safety when carrying out unloading operations. The aimed of the research were to identify and calculate the potential risks of fish unloading activities at Bitung OFP. The data were collected by direct observation. The data collected then analyzed using HTA (Hierarchy Task Analysis), JSA (Job Safety Analysis) and descriptive analysis methods. The results showed that there were 40 activities in total unloading process which were grouped into 3 main activities, namely unloading preparation activities, unloading activities, and post-unloading activities. Based on the analysis, all of those activities then divided into 5 group level of hazard. The level of hazard of those activities were 3 (7%) no hazard, 19 (48%) light, 14 (35%) medium, 0 (0%) severe, and 4 (10%) fatal. Risk control that can be carried out to minimize risks is by increasing awareness of using PPE during unloading activities.
Keyword: PPS Bitung, work safety, keselamatan kerja, operasi bongkar, potensi risiko, tingkat bahaya, Bitung Ocean Fishing Port, potential hazard, potential risk

Judul: Potensi Risiko Kegiatan Inspeksi Pembongkaran Ikan di Pelabuhan Perikanan Samudera Kendari.
Abstrak: Aktivitas bongkar merupakan aktivitas yang cukup padat dilakukan di Dermaga PPS Kendari yang mengharuskan pelaporan kedatangan kapal dan izin bongkar agar dilakukan inspeksi pembongkaran ikan. Aktivitas yang dilakukan oleh petugas inspeksi terindikasi mempunyai konsekuensi bahaya dan tingkat risiko. Penelitian ini dilakukan dengan tujuan untuk mengidentifikasi kegiatan dan menghitung potensi risiko kegiatan inspeksi pembongkaran ikan di PPS Kendari. Metode pengumpulan data yang digunakan adalah metode observasi langsung dan wawancara, kemudian dianalisis dengan metode HTA (Hierarchy Task Analysis), HIRARC (Hazards Identification, Risk Assessment, and Risk Control) dan analisis deskriptif. Hasil penelitian menunjukkan 16 aktivitas dan 34 subaktivitas pada shift pagi, dan 15 aktivitas dengan 31 subaktivitas pada shift malam. Tingkat risiko bervariasi: 14% rendah pada shift pagi dan malam, 46% sedang pada shift pagi dan 29% pada shift malam, 19% tinggi pada shift pagi dan 35% pada shift malam, serta 21% ekstrem pada shift pagi dan 22% pada shift malam. Pengendalian risiko yang dapat dilakukan untuk memperkecil risiko yaitu dengan metode substitusi, administrasi, dan penggunaan APD pada saat bekerja., The unloading activity is a fairly dense activity carried out at the Kendari PPS Pier, requiring reporting of vessel arrival and unloading permits for fish unloading inspections. Activities conducted by inspection officers are indicated to have hazardous consequences and risk levels. This study aims to identify activities and calculate the potential risks of fish unloading inspection activities at PPS Kendari. Data collection methods used include direct observation and interviews, analyzed using HTA (Hierarchy Task Analysis), HIRARC (Hazards Identification, Risk Assessment, and Risk Control), and descriptive analysis methods. The research results indicate 16 activities and 34 subactivities during the morning shift, and 15 activities with 31 subactivities during the night shift. Risk levels vary: 14% low for both morning and night shifts, 46% moderate for the morning shift and 29% for the night shift, 19% high for the morning shift and 35% for the night shift, and 21% extreme for the morning shift and 22% for the night shift. Risk control methods to minimize risks include substitution, administration, and the use of PPE during work.
Keyword: interception officer, PPS Kendari, potential hazard, potential risk, work safety

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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