Judul: Perancangan Model Faktor Ergonomi Makro Terhadap Produktivitas Sistem Kerja pada Pabrik Gula
Abstrak: Sugar mill is a part of sugar industry representing a dynamic work system which occupies machine and human labour. The good scheme ergonomic covers the micro and macro ergonomics to improve productivity of work system. This research was conducted in order to learn and determine the macro and micro parameter of ergonomics at the work system in a sugar mill. The determination of these parameters was applied in model scheme of micro and macro ergonomic factors to improve work system productivity. The illumination, temperature, humidity, noise, vibration, and operator perceptions ware collected as data input for modelling system using artificial neural network. As the result, the optimum productivity level in PG Bungamayang can be reached if the combination of macro and micro ergonomic factors for the illumination 100-200 lux, temperature 25 0C, humidity 60-70%, noise 85 dB, vibration 1.6-2 m/s2 and very care to organizational work system of the operator perception level with the predicted productivity level equals to 1858-1865 ton cane/shift, and in PG Jatitujuh can be reached if illumination 220-260 lux, temperature 28-29 0C, humidity 62-66%, noise 80 dB, vibration 1.2-1.6 m/s2 and very care to organizational work system of the operator perception level, with the predicted productivity level equals to 1464-1592 ton cane / shift.
Keyword: 

Judul: Analisis Faktor-Faktor Produksi Gula di Pabrik Gula Industri Gula Nusantara, Kecamatan Cepiring, Kabupaten Kendal, Jawa Tengah
Abstrak: Revitalization of the sugar mills is one of the key factor to achieve sugar self-sufficiency. Cepiring Sugar Factory (PG Cepiring) which newly revitalized in 2008 become a mainstay to achieve sugar self-sufficiency in Central Java. Since revitalized, PG Cepiring has not been able to fulfill the production target from companies and the government. This case indicates that the factory has an inefficiencies problems in manufacturing operation. The aim of this research is to analyze the influence of production factors on sugar production, and analyze the allocative efficiency of sugar production factors in PG Cepiring. Data were analyzed using the model of Cobb-Douglas production function that is processed with OLS estimation (Ordinary Least Square). Allocative efficiency analysis performed by using the ratio of NPM and BKM. Based on the analysis, variables that significantly affect to sugar production is raw sugar, raw sugar yield, the amount of sugar cane, and cane yield in sugar cane milling season. On the other side, the most significant variables outside the miling season are yield of raw sugar and raw sugar. The result of this analysis also showed that PG Cepiring would be more efficient to processing raw sugar than processing sugar cane
Keyword: 

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
Keyword: