Judul: Analisis Perencanaan Pemanenan Kelapa dengan Model Penugasan pada P.T. Perkebunan XI di Kebun Cikasungka Jasinga
Abstrak: Tujuan dari penelitian ini adalah menganalisa dan merencanakan, serta pengendalan dari sistem pemanenan dengan biaya minimun pemanenan yang dilakukan pada blok-blok kebun untuk masing-masing Afdoling.
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Judul: Model Sistem Perencanaan Produksi Industri Minyak Sawit di PT Perkebunan VII Bah Jambi
Abstrak: Tujuan dari penelitian ini adalah merencanakan pemanfaatan hasil perkebunan kelapa sawit secara optimal dengan pengelolaan pemanenan dan pengangkutan yang e f e k t i f , mengendalikan proses pengolahan kelapa sawlt untuk menghasilkan minyak sawit yang sesuai dengan kuantitas dan kualitas yang diinginkan dan melakukan peramalan permintaan minyak sawit yang dapat dipenuhi oleh produksi pabrik. Metode yang dipakai adalah metode pendekatan sistem dengan menggunakan teknik penundaan drskrit , teknik peramalan "Exponentially Weighted Moving Averaget1 (EM,) teknik regresi sederhana, berganda dan "step wise" beserta dengan uji-u j i multikolinearitas, autokorelasi, kegunaan model, kelayakan model dan u j i t. Wodel sistem perencanaan produksi xndustri w i t di PT Perkebunan VII Bah Jambi terbagi atas enam model, yaitu t i g a buah model yang dibentuk berdasarkan p ses yang t e r j a d i dalam sistem dan t i g a buah model lainnya yang merupakan penerapan dari model regresi sederhana dan berganda yang disesuaikan dengan kondisi dalam sistem.
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Judul: Distribution and Diversity of Ectoparasite Mites on Geckos in Indonesia
Abstrak: Data on the diversity and dispersal of parasitic mites on house geckos in Indonesia are very scarce. In this work, the distribution and diversity of mites living on three species of house geckos, namely Cosymbotus platyurus, Hemidactylus frenatus, and H. garnotii collected throughout Indonesia, has been elaborated. Geckos and mites were captured and immediately preserved in 70% ethanol. Whole mount of the mites was prepared by clearing in lactophenol followed by mounting on polyvinyl lactophenol solutions. The SEM preparation was conducted to examine the detail morphological characters of the mites. The results showed that among 448 individuals of geckos, 221 geckos were infected by Geckobia mites. Prevalences of C. platyurus, H. frenatus, and H. garnotii infested by mites were 14.8%, 50.69%, and 79.6%, respectively. Three different spesies of Geckobia (G1, G2, and G3) could be differentiated; and based on similarities of their morphological characters to ones described in published literatures, Geckobia G2 is Geckobia glebosum and Geckobia G3 is Geckobia bataviensis while G1 could not be identified to the species level. The highest mean intensity of Geckobia G1 infestation was found on H. garnotii (I=7.0), G. glebosum infestation on H. frenatus (I=3.5), and G. bataviensis infestation on H. garnotii (I=11.8). In general, C. platyurus was infested by the least number of mites. Geckobia G1 were found living on the skin folds on the claws, G. glebosum were found mainly on the body and thigh, and G. bataviensis were found on almost all parts of the host’s body. Geckobia mites are distributed randomly throughout Indonesian Archipelago, following the pattern of distribution of their hosts. So it is concluded that Geckobia G1, G. glebosum, and G. bataviensis are sympatric.
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