Judul: Kayu Sisa Pohon yang Ditebang dan Tidak Ditebang di IUPHHK-HA PT. Inhutani II Unit Malinau Kalimantan Utara
Abstrak: Penebangan pohon komersial di hutan alam masih menghasilkan kayu sisa yang relatif besar. Kayu sisa berasal dari pohon ditebang dan pohon yang tidak ditebang. Sebagian besar penelitian yang telah dilaksanakan hanya menghitung kayu sisa dari pohon yang ditebang, sedangkan data kayu sisa pohon tidak ditebang masih sangat terbatas. Penelitian ini bertujuan untuk menghitung kayu sisa dari pohon yang ditebang dan tidak ditebang, serta mengklasifikasikan jenis dan bentuk kayu sisa. Kayu sisa yang diukur adalah kayu sisa berdiameter ≥ 10 cm yang terdapat pada 15 plot contoh berbentuk lingkaran. Rata-rata luas plot contoh adalah 2.61 ha. Hasil penelitian menunjukkan bahwa kayu sisa pohon yang ditebang sebesar 65.56% dan kayu sisa pohon tidak ditebang sebesar 34.44% dari total kayu sisa. Berdasarkan bentuknya, kayu sisa pohon ditebang berupa tunggak sebesar 8.17%, potongan pendek sebesar 10.89%, batang atas sebesar 17.74%, cabang sebesar 19.74%, dan ranting sebesar 9.03%. Berdasarkan bentuknya, kayu sisa pohon tidak ditebang berupa pohon roboh sebesar 20.92%, patah batang sebesar 11.55%, dan rusak tajuk sebesar 1.98%. Kata
Keyword: hutan alam, kayu sisa, penebangan

Judul: Kayu Sisa Pohon Ditebang dan Tidak Ditebang di IUPHHK-HA PT. Wijaya Sentosa, Wasior, Papua Barat
Abstrak: Logging activity was the harvesting of a forest that most will bring the waste wood. The occurrence of wood the rest of this can be caused by technical error on a field planning policy harvesting less accurate and natural factors in the field. This study aims to calculate the waste wood of felled trees and trees bears no and kind of cut down and classify the form of the waste wood produced from the activities of logging. The waste wood derived from trees to be felled by 64.36 % of the volume of the waste wood produced, while the waste wood that comes from the bears no cut down by 35.64 %. There are based on the shape of the rest of wood felled trees consisting of stump 4.19 % of, a short piece of 5.43 %, of the stem above 23.63 %, branches and twigs of 31.12 %, while the rest of the wood from trees felled not made up of the tree collapsed by 18.24 %, broken rod 14.24 %, and damaged by plans 3.16 %. In accordance with the approach of the exploitation of leftovers that are at least 10 centimeters diameter of 0.61, meanwhile, based on SK Dirjen Pengusahaan Hutan No. 212/KPTS/IV-PHH/1990 are at 0.84
Keyword: Bogor Agricultural University (IPB), Natural forest, Logging, Forest residu

Judul: Query Expansion based on Bilingual Dictionary Using Conditional Probability
Abstrak: Query expansion is a technique that can be used to bridge vocabulary gaps between queries and documents in the collection. With query expansion, user will be helped to formulate queries well so that user will optimize the search result. In this study, the expansion term was resulted from the translation of bilingual dictionary. Subsequently, several terms of expansion were elected based on the closeness of its relationship with the original query. This research showed that conditional probability can be used to select expansion term in bilingual translation method query expansion. The result of 1000 documents was more than 97% relevan document can be retrieved by this system. The more expansion term used, the larger number relevan document was retrieved.
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