Judul: Analisis Waktu Baku dan Faktor yang Mempengaruhi Produktivitas Pekerja Pada Proses Produksi Manisan Carica di CV Yuasa Food.
Abstrak: Daerah Wonosobo, Jawa Tengah memiliki produk unggulan, buah carica. Industri pengolahan di Wonosobo mengolah buah carica menjadi manisan carica. Cara yang dapat dilakukan perusahaan untuk meningkatkan produktivitas adalah mempunyai standar baku dalam menghasilkan setiap produk. Penelitian yang dilakukan adalah pengukuran waktu kerja dengan tujuan mendalami waktu yang dilakukan pekerja agar mampu bekerja secara normal dan wajar sehingga meningkatkan produktivitas. Penelitian dilakukan menggunakan metode jam henti dengan stopwatch. Pengukuran waktu dilakukan pada proses produksi yang dibagi menjadi 7 unsur kerja yaitu pengupasan, pembelahan buah, pemisahan biji, pengirisan, pewadahan carica, pengepressan dan pengguntingan plastik. Setelah itu dihitung waktu siklus, waktu normal dan waktu baku. Waktu siklus didapat sebesar 43.89 detik, waktu normal sebesar 50.15 detik dan waktu baku sebesar 58.77 detik. Produktivitas perorang menghasilkan manisan carica cup mini dengan waktu saat ini sebesar 37 cup/jam orang dan dengan waktu baku sebesar 35 cup/jam orang. Selain itu, peningkatan produktivitas di CV Yuasa Food dipengaruhi tiga hal yaitu ketenagakerjaan, teknologi dan lingkungan.
Keyword: carica sweets, productivity, time standard

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: The Exploration of Discrete Logarithm over Finite Field GF(3m)
Abstrak: The security of many public~key algorithms is based on the problem of finding discrete logarithms. The generalized discrete logarithm problem is the following: given a finite cyclic group G of order n, a generator a of G, and an element fl E G, find the integer x, 0 ~ x ~ n - 1, such that 0: = fl. Algorithm for discrete logarithm problem focused on Menezes et al. (1997) that consist of exhaustive search algorithm, the baby-step giant-step algorithm, Pollard's rho algorithm, Pohlig-Hellman algorithm, and index-calculus algorithm. These algorithms are explorated to be used in discrete logarithm problem over finite field GF(3m ). The exploration also produces some algorithms, i.e. naif negative algorithm, baby-step mother-step algorithm, baby-step mother free-step algorithm, and baby-step free-step algorithm. All algorithms implemented using Maple 11. The Pohlig-Hellman and baby-step giant-step algorithms are efficient enough to be used in discrete logarithm problem over finite field GF(3m ) for m < 20.
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