Judul: Studi Gerak dan Waktu pada Kegiatan Produksi Air Minum dalam Nama NIM Kemasan (AMDK) di PT Krakatau Daya Tirta, Cilegon
Abstrak: Krakatau Daya Tirta is a company that engaged in the provision of packaged drinking water (AMDK). Every company wants to increase productivity to obtain high profits, therefore, the use of time and labor movement must be efficient and effective. Cycle of time that used by workers of production of packaged drinking water (AMDK) at the beginning and end of shift is different. The activity to put the AMDK 240 ml cup into the cardboard was using standard time at 37.96 seconds. The activity of cardboard assembly and final packaging process was using standard time at 38.485 seconds. The activity to pre-wash gallon 1, 2, 3, and 4 used standard time in the early shift at 6.92; 24.13; 7.92; and 48.31 seconds. According to Body Nordic questionnaire, workers put the cup into the cardboard and pre-wash workers having pain in them limbs after doing the work. Therefore, these activities work postures were analyzed by Rapid Upper Limb Assessment (RULA) method to determine the risk level of injury to the body.
Keyword: Bogor Agricultural University (IPB), standard time., RULA, productivity, efficient, effective

Judul: Analisis Beban Kerja pada Lini Produksi Air Minum Dalam Kemasan di PT Krakatau Daya Tirta, Cilegon
Abstrak: Penelitian ini bertujuan untuk mengidentifikasi beban kerja dan energi yang digunakan dalam kegiatan produksi AMDK. Pengamatan dilakukan terhadap seluruh karyawan pabrik pada bagian produksi AMDK, 5 orang pekerja pada produksi kemasan gelas cup dan 8 pekerja pada produksi kemasan botol gallon. Analisis dilakukan berdasarkan parameter fisiologis (denyut jantung) dan kuesioner. Hasil penelitian menunjukkan laju konsumsi energi terbesar pada produksi kemasan gelas cup adalah pada subjek C5 pada rangkaian kegiatan memimdahkan kemasan kardus ke atas konveyor dan memindahkannya ke tempat penyimpanan. Selanjutnya pada produksi kemasan botol gallon laju konsumsi energi terbesar dialami oleh subjek G4 pada rangkaian kegiatan membilas botol gallon menggunakan mesin dan meletakkan pada konveyor mesin produksi. Berdasarkan hasil kuesioner semua subjek tergolong pada kategori beban kerja sedang, kecuali pada subjek G4 yang termasuk dalam kategori cukup berat.
Keyword: AMDK, beban kerja, laju konsumsi energi, produksi

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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