Judul: Pemodelan Jaringan Saraf Tiruan Untuk Prediksi Struktur Sekunder Protein
Abstrak: Penelitian ini bertujuan untuk membangun suatu model prediksi struktur sekunder protein menggunakan Jaringan Saraf Tiruan (JST). Kelas keluaran ditentukan menggunakan proses pembelajaran terhadap pola masukan pada saat pelatihan data. Pola masukan dibentuk dengan memanfaatkan sliding window dari sekuen asam amino dan penambahan fitur ekstraksi kimiafisik. Hasil dari penelitian ini memperlihatkan nilai akurasi Q3 score yang lebih besar jika menambahkan fitur kimiafisik. Model prediksi dengan penambahan ekstraksi fitur kimiafisik menghasilkan nilai akurasi 67.08% untuk alpha-helix (H), 45.18% untuk beta-sheet (E), dan 66.44% untuk coil (C). Model tanpa penambahan fitur ektrkaksi kimiafisik menghasilkan nilai akurasi sebesar 66.14% untuk alpha-helix (H), 45.83% untuk beta-sheet (E), dan 66.85% untuk coil (C).
Keyword: artificial neural network, physicochemical, protein secondary structure

Judul: Pemodelan Decision Tree untuk Prediksi Struktur Sekunder Protein
Abstrak: Prediksi struktur sekunder protein adalah salah satu masalah yang sudah lama dibahas dalam bidang bioinformatika. Berbagai metode telah diterapkan namun masalah akurasi belum mencapai hasil yang maksimal. Penelitian ini dilakukan untuk membangun suatu model prediksi struktur sekunder protein dengan menggunakan decision tree dengan algoritme C4.5. Penentuan setiap kelas dalam proses klasifikasi struktur sekunder protein dalam penelitian ini berdasarkan pembelajaran terhadap pola masukan dalam proses pelatihan. Data diperoleh dari Protein Data Bank (PDB) yang di-assign dengan format DSSP. Pola masukan dibentuk dengan memanfaatkan sliding window dari sekuen asam amino dengan ekstraksi fitur kimiafisik dan posisi atom. Model prediksi pengujian cross validation tanpa fitur posisi atom menghasilkan nilai akurasi 90.49%, sedangkan untuk pengujian dengan unknown data akurasinya menurun menjadi 51.29%. Kemudian dengan fitur posisi atom menghasilkan akurasi 90.17% untuk metode cross validation dan 50.83% menggunakan unknown data. Hasil penelitian tersebut memperlihatkan akurasi akan optimal jika menggunakan known data dengan cross validation. Fitur posisi atom tidak dibutuhkan dalam memprediksi struktur sekunder protein.
Keyword: Amino acid, Atom position, Decision tree, Physicochemical, Elektro fitur kimiafisik, Decision tree, Algoritme, Fitur posisi alam

Judul: Biology and ecology of the buffalo fly, haematobia exigua de meijere (diptera:muscidae)
Abstrak: The life history of the buffalo fly was observed at room temperature of 27°-29.5°C and at a relative humidity of 48-68 percent. The eggs hatched after 17-22 hours, with an average of 18 hours. First instar larvae measured 1.25 + 0.16 mm long and 0.27 + 0.037 mm wide. reach the second larval stage. It took 6-12 hours to the second instar larvae measured 2.676 +0.187 mm long and 0.353 +0.028 mm wide. The second instar took about 12-24 hours to reach the third larval stage. The third instar measured 6.833 + 0.189 mm long and 0.919 + 0.051 mm wide. It took about 2-3 days for the third instar to become pupae. Duration of the pupal stage was about 5-7 days before the adults emerged. Under laboratory condition, the buffalo fly completed its life cycle in 9.5 to 10.5 days, whereas under field condition it took 9-14 days with an average of 10.5 days. The growth ratio which was based on the measurements of the cephalo-pharyngeal skeleton of each instar was 1.797. The preoviposition period was 8-12 days and mating usually occurred on the 6th or 7th day. The longevity of the male was 29 days, whereas it was 32 days in the female. The range of egg production under laboratory condition was between 20-139 per female fly. The belly and hind legs of the carabao were the most preferred habitat either during cloudy and cool dry or shiny and warm day. When the weather was clear and the carabao was in the shade, the flies tended to be more distributed particularly on the shoulder, dewlap, back and horns. The carabaos had relatively fewer Musca sp. and Stomoxys calcitrans than cattle; never the less carabaos had a higher infestation of buffalo fly than cattle. Oviposition occured either during the day or night but the buffalo flies were more active during the night than in the day time. The effect of various lengths of exposure time of manure in relation to the oviposition was profound. observed, the maximum number of the buffalo flies was occurred when the dung was exposed for 30 minutes. With increasing time of exposure the number and variety of insects also increase. It was evident that Sepsidae and psychodidae were the most dominant insects emerging from the dung. The number of buffalo flies also increased with increasing
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