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 dan Perbaikan Sistem Kerja Berdasarkan Metode Studi Gerak dan Waktu Pada Lini Produksi Squash Orange di PT. Buanasari
Abstrak: Assessment of work productivity should be done routinely by a company. Achieving high productivity required special attention to efficiency and effectiveness of work. For that reason, there was a need to analyze working movement and work time required for one cycle of process. Time required at the beginning and the end of a process shift was different depends on the decrease of labor’s motivation and stamina, which related to fatique condition of labor. Fatique could be caused by working conditions and work capacity of workers. Motions were analyzed and grouped according to the cycle and type of motion. Average time of each motion adjusted with Westinghouse rating and allowances to obtain the standard time. Standard time for the squash orange production from was 25.46 seconds/bottle, while the standard time for the packaging process was 20.22 seconds/bottle. Productivity can be calculated by dividing the daily product output with the number of workers and duration to finish one cycle of process. It was obtained from the calculation that each production worker’s productivity was 36 bottles/hour, while the packaging worker’s productivity was 7 cartons/hour.
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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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