Judul: Mesin Pencari untuk Sistem Kearsipan Daerah Kabupaten Sragen
Abstrak: Sragen district archives system is the system that used to store archived data. In this archives system, the searching is based on data or a summary disposition from the archives. Because this search result is limited, this research makes search engine for regional archives system that is based on the contents of digital archives, especially Microsoft Word. This search engine is using vector space model for weighting and cosine similarity. Stemmer used in this research is stemmer based on KBBI. Evaluation is using recall and precision of queries that has been determined. The calculation of average precision (AVP) is done because of some queries are used in this evaluation. AVP measuring is calculatd based on 11 standard recall levels. Evaluation result from the search engine is relevant documents that appropriate with the sequence relevance. The value of average precision got from 10 queries is 0.896, scale from 0 to 1. The precision of the search engine performance is affected by the stemmer. Stemmer KBBI creates smaller index size, but it decreases the precision. Stemmer KBBI decreases the precision, because of search by using basic words .
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Judul: Mesin Pencari Dokumen Bahasa Indonesia Menggunakan Latent Semantic Indexing dengan Pembobotan Global
Abstrak: Current users tend to like search engine based on semantic of word. This is caused by the existence of synonymy and polysemy problems in the selection of the use of the word. One technique to resolve these issue is Latent Semantic Indexing (LSI). LSI has the ability to find relevant documents even if the word of the query are not written in the document. Currently, TF-IDF term weight algorithm is widely applied in search engines. Xia and Chai (2011) stated that, in a document collection, the term with higher frequency and hypo-dispersion distribution usually contains less information. The purpose of this research is to implement LSI using Singular Value Decomposition (SVD) method with term distribution based global term weight. This research used 1000 Indonesian agricultural documents. The performance of search engine using LSI with term-distribution-based global term weight gave highest average precision around 40.47%. The test result also showed that LSI with term-distribution-based global term weight gives better acuracy than LSI with TF-IDF.
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Judul: Pengaruh pemberian hormon tiroksi secara oral terhadap pertumbuhan dan kelangsungan hidup ikan plati koral
Abstrak: Hormon tiroksin diketahui sebagai hormon yang dapat mempengaruhi pertumbuhan dengan jalan meningkatkan laju metabolisme tubuh, efisiensi makanan dan retensi protein. Oleh karena itu, pada penelitian ini dipelajari pengaruh pemberian hormon tiroksin melalui makanan terhadap pertumbuhan dan kelangsungan hidup ikan plati koral. Pelaksanaannya dilakukan di Laboratorium Pengembangbiakan dan Genetika Ikan, Jurusan Budidaya Perairan, Fakultas Perikanan dan Ilmu Kelautan, Institut Pertanian Bogor mulai akhir bulan Januari sampai akhir bulan Maret 2003. Ikan plati koral yang berumur enam pekan dipelihara di dalam akuarium berukuran 100 cm x 50 cm x 45 cm, dengan kepadatan dua ekor per liter. Selanjutnya dilakukan adaptasi terhadap jenis makanan yang akan diberikan. Adaptasi ini dilakukan sampai ikan menunjukkan respon positif terhadap makanan yang diberikan. Setelah itu, ikan dipuasakan selama 24 jam untuk menghilangkan pengaruh sisa makanan yang masih ada dalam tubuh. Percobaan dilakukan di dalam akuarium berukuran 46,5 cm x 60 cm x 50 cm sebanyak sepuluh buah, dengan volume air sembilan puluh liter. Setiap akuarium dibagi tiga dengan jaring sehingga masing-masing berukuran 46,5 cm x 20 cm x 50 cm Pada akuarium 1-A, I-B, dan I-C diberikan makanan dengan dosis tiroksin 0,2 mg/kg makanan dan lama pemberian masing-masing selama satu, dua, dan tiga pekan. Untuk akuarium II-A, II-B, dan II-C, diberikan makanan dengan dosis tiroksin 2 mg/kg makanan dan lama pemberian masing-masing satu, dua, dan tiga pekan. Dan pa akuarium III-A, III-B, dan III-C diberikan makanan dengan dosis 20 mg/kg makanan dan lama pemberian pun selama satu, dua, dan tiga pekan. Msing-masing perlkuan diulang sebanyak tiga kali.
Keyword: thyroxine, Xiphophorus maculatus, southern platyfish, platy