Judul: Management of Tools and Work Materials in Docking Activities of Indonesian Fisheris Public Company Muara Baru
Abstrak: Docking kapal merupakan tempat perbaikan kapal yang memiliki potensi bahaya yang tinggi dari penggunaan alat dan bahannya. Tujuan penelitian ini untuk mengidentifikasi sumber bahaya yang berasal dari alat dan bahan kerja pada aktivitas docking kapal Perum Perindo Muara Baru dan memberikan rekomendasi pengelolaan alat dan bahan kerja pada docking kapal perikanan Perum Perindo Muara Baru. Penelitian dilakukan di Perum Perindo Muara Baru, Jakarta Utara. Metode yang digunakan yaitu studi kasus dengan pengambilan data melalui observasi lapang dan wawancara kepada seluruh karyawan docking sejumlah 9 orang. Hasil penelitian menunjukan bahwa aktivitas docking kapal Perum Perindo mengunakan 43 alat dan 13 bahan kerja, sebanyak 25 (58%) alat dan seluruh bahan (100%) yang digunakan teridentifikasi sebagai sumber bahaya. Beberapa langkah terapan 5S yaitu, memisahkan barang yang diperlukan dengan yang tidak diperlukan terkusus pada gudang docking, menata barang yang diperlukan, menjaga kebersihan area kerja dalam kondisi baik, pembuatan seperangkat prosedur yang baik, dan membangun disiplin diri pribadi serta membiasakan diri untuk menerapkan 5S melalui norma kerja dan standarisasi., Ship docking is a ship repair place that has a high potential hazard from the use of tools and materials. The purpose of this study was to identify danger from tools and work materials in Perum Perindo Muara Baru's ship docking and provide recommendations for tools and materials management on Perum Perindo Muara Baru fishing boat docking. The research was conducted at Perum Perindo Muara Baru, North Jakarta. The method of this research is case study through data collection from field observations and interviews with all 9 docking employees. The results showed that Perum Perindo's ship docking activities used 43 tools and 13 work materials, as many as 25 (58%) tools and all materials (100%) used were identified as sources of danger. Some of the steps to applied 5S are, separating needed items from those that are not needed especially in the docking warehouse, arranging needed items, keeping the work area clean in good condition, making a set of good procedures, and building personal self-discipline, and getting used to implementing 5S through work norms and standardization.
Keyword: docking, materials, Perum Perindo, sources of danger, system,tool

Judul: Safety Procedures and Risk Occurrence on  Ship’s Docking Area of Perusahaan Umum Perikanan Indonesia Muara Baru
Abstrak: Galangan kapal merupakan tempat berlangsungnya kegiatan perbaikan, pembuatan dan perawatan kapal. Kecelakaan kerja umumnya terjadi karena kelalaian dan kurangnya pengawasan kerja. Perusahaan lazimnya harus menciptakan lingkungan kerja yang aman bagi para pekerjanya dengan menerapkan keselamatan dan kesehatan kerja, termasuk area docking PT Perikanan Indonesia. Tujuan penelitian ini adalah mengidentifikasi kelengkapan peralatan dan kondisi area kerja docking kapal, mengidentifikasi aktivitas yang berpotensi bahaya bagi pekerja di area docking kapal, serta merekomendasikan solusi untuk menghindari kecelakaan kerja. Metode yang digunakan yaitu analisis deskriptif serta metode Job Safety Analyisis (JSA). Hasil penelitian menunjukkan bahwa masih banyak pekerja area docking yang tidak memperdulikan keselamatan kerja. Konsekuensi bahaya fatal sebagian besar terjadi saat aktivitas docking kapal dikarenakan para pekerja tidak mempunyai pengetahuan tentang perlengkapan khusus untuk bekerja pada ketinggian. Metode JSA digunakan untuk membuat rekomendasi seperti penggunaan alat pelindung diri dan melakukan pengendalian secara teknis dan administratif dimana harapannya dapat mengurangi potensi kemungkinan kecelakaan kerja., A shipyard is where ship construction, repair, and maintenance are carried out. Job incidents commonly happen because of human error and lack of security. A company should create a safe environment by reassuring their employees’ health and safety environment, the docking area of PT Perikanan Indonesia included. The purposes of this study are to identify the completeness and readiness of the equipment and docking workstations, to identify the high-risk situation that can occur to the employers at the docking area, and to propose a solution regarding the prevention of job incidents. The analysis methods used are descriptive analysis and Job Safety Analysis (JSA). The results showed that many employees of the docking area lack awareness of job safety procedures. Fatal failure could occur during docking operations, and it is caused by the dock staff not being familiar with the safety equipment used on heights. It recommends wearing personal protective equipment and conducting technical and administering inspections to prevent many accidents during docking.
Keyword: docking, galangan kapal, job safety analysis, kecelakaan kerja, keselamatan 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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