Judul: Profil Semen Imago Jantan Ulat Sutera Liar Attacus Atlas (Lepidoptera: Saturniidae).
Abstrak: Penelitian ini bertujuan untuk mengetahui profil semen imago jantan ulat sutera liar Attacus atlas dengan dua perlakuan yang berbeda. Perlakuan pertama dilakukan dengan mengoleksi semen imago jantan setiap dua jam sejak imago keluar dari kokon hingga tidak mengeluarkan semen. Perlakuan kedua dilakukan dengan mengoleksi semen secara terus menerus setelah imago ditunggu empat jam sejak keluar dari kokon. Semen yang telah dikoleksi dilakukan evaluasi secara makroskopis dan mikroskopis. Hasil penelitian menunjukkan pada perlakuan pertama, rerata volume semen terbanyak adalah pada dua jam pertama yaitu 0.69±0.61 mL dengan kisaran 0.25−1.75 mL. Nilai rerata motilitas dan konsentrasi spermatozoa tertinggi adalah pada dua jam kedua yaitu 72±10.85% dengan kisaran 50−85% dan 6675±7228×106/ mL dengan kisaran 1025−23625×106/ mL. Nilai rerata volume semen, motilitas, dan konsentrasi spermatozoa tertinggi pada perlakuan kedua didapat pada koleksi pertama yaitu 0.87±0.30 mL dengan kisaran 0.4±1.5 mL, 65±12% dengan kisaran 30−75% dan 4370±2923×106/ mL dengan kisaran 1450−10725×106/ mL.
Keyword: Attacus atlas, imago jantan, imago jantan, profil reproduksi, spermatozoa

Judul: Penentuan Waktu Optimal Koleksi dan Evaluasi Kapasitas Semen Ulat Sutera Liar Attacus atlas (Lepidoptera: Saturniidae)
Abstrak: The objectives of the research were to determine the optimum time for semen collection and to evaluate semen capacity of A. atlas imagoes. Semen were obtained from 15 imagoes every 2 hours after emerged from coccon using microtube until no more semen in ejaculate. Immediately after collection, the semen volume and spermatozoa concentration were evaluted. The results showed that A. atlas imagoes emerged mostly at 04.00 to 08.00 pm (67%), the optimal time for semen collection was 4 hours after imago had emerged from the coccon with volume was 0.57±0.38 mL ranging from 0.06 to 1.31 mL. Ejaculation frequency were 3 to 5 times per imago with the total semen volume were 1.27±0.50 mL ranging from 0.31 to 1.76 mL. The sperm concentration was 1141±1608 x 106/mL ranging 75-5943 x 106/mL. The average of semen capacity was 1.433±2.569 x 109 cells ranging 0.121-9.687 x 109 cells.
Keyword: volume., semen capacity, concentration, imago A. atlas

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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