Judul: Analisis Beban dan Kapasitas Kerja pada Proses Produksi Tropical Fruit Salad Kaleng di PT GGPC Lampung Tengah
Abstrak: Tropical Fruit Salad (TFS) kaleng merupakan hasil olahan buah tropis yang terdiri dari nanas, jambu biji dan pepaya yang di produksi di PT GGPC. Kapasitas ideal dan jumlah pekerja dalam proses produksi TFS kaleng dapat diidentifikasi dengan pendekatan ergonomika berdasarkan beban kerja dan tingkat konsumsi energi. Analisis beban dan konsumsi energi dilaksanakan dengan pengukuran denyut jantung pekerja pada 61 subjek yang merepresentasikan pekerja pada seluruh proses produksi TFS kaleng. Hasil dari penelitian ini yaitu terdapat 38 elemen kerja dalam proses produksi TFS kaleng yang mana 12 elemen kerja dikategorikan sebagai elemen kerja dengan tingkat kejerihan ringan, 16 elemen kerja dikategorikan sebagai elemen kerja dengan tingkat kejerihan sedang, dan 10 elemen kerja dikategorikan sebagai elemen kerja dengan tingkat kejerihan berat. Untuk memproduksi satu kaleng TFS dibutuhkan energi sebesar 13.83 kkal. Laju konsumsi energi elemen kerja yang dikerjakan dengan bantuan mesin umumnya rendah dengan kapasitas yang besar. Sebaliknya laju konsumsi energi elemen kerja yang dikerjakan secara manual umumnya tinggi dengan kapasitas kerja yang rendah. Berdasarkan target produksi sebanyak 7500 kaleng/hari dan jumlah tenaga kerja saat ini produktivitas PT GGPC berpotensi untuk ditingkatkan sebesar 2.13%.
Keyword: Workload, Work element, Canned TFS, Fruit salad, Pineapple, Guava, Papaya, TFS, GGPC, Work capacity, Biosystem

Judul: Studi Waktu pada Proses Produksi Tropical Fruit Salad (TFS) Kaleng di PT GGP
Abstrak: Indonesia is a tropical country which has great potential to produce various kinds of tropical fruit that can be processed into refined products, one of them is Tropical Fruit Salad (TFS). The purpose of this research is determining the work elements and production process flow in canning TFS, standard time, the ideal working capacity of each work element, then designing the labor requirement and its distribution on each work element based on the company's production targets. The results obtained from this study are in the TFS canning production process there are 5 major groups of working line in which include 38 work elements. Total standard time which is equivalent to produce canned A10 TFS is 581.46 seconds. Work element which contributes the greatest time in the TFS canning production process is Guava Peeling (145.57 sec/cans) while the lowest one is Preparation (0.09 sec/can). The ideal number of workers for producting canned TFS with 7500 cans/day production target is as much as 358 people/day. Regarding to company's current labor ammount which is 387 people, the company can possibly increase its production target of 8100 cans/day, equivalent to an increase of 8%.
Keyword: Bogor Agricultural University, canned TFS, time study, work capacity, work element

Judul: Metrik Einstein (Anti-) Self-Dual Berdimensi Empat dengan Metode Cartan
Abstrak: Gravitational field equation can be formulated in differential forms (differential geometry), which describes gravity as a manifestation of the curvature of space-time. Curvature of space-time is characterized by a metric that satisfies the gravitational field equation. With differential forms it can be formulated the (anti-) self-dual Einstein equation, which is a modification of the Cartan structure in (anti-) self-dual basis. Calculation of (anti-) self-dual metric with (anti-) self-dual Einstein equation is simpler than the calculation using Christoffel symbols.
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