Judul: Pengaruh Nilai Alpha pada Pergerakan Titik-titik Iterasi dalam Algoritme Titik Interior
Abstrak: Terdapat beberapa metode untuk menyelesaikan masalah optimisasi linear, antara lain metode grafik, metode simpleks, dan metode titik interior. Metode grafik adalah metode yang digunakan untuk menyelesaikan masalah optimisasi linear dengan dua variabel keputusan. Metode simpleks merupakan metode yang digunakan untuk mencari masalah optimum yang bergerak dari verteks ke verteks, sedangkan algoritme titik interior adalah algoritme yang digunakan untuk menyelesaikan masalah optimum yang bergerak di dalam interior daerah fisibel. Pada karya ilmiah ini dibahas algoritme titik interior untuk menyelesaikan program linear serta mengamati pengaruh nilai alpha pada pergerakan titik-titik iterasi dalam algoritme titik interior.
Keyword: metode grafik, metode simpleks, metode titik interior, optimisasi linear

Judul: Metode Titik Interior dalam Mengoptimumkan Optimasi linear Menggunakan Scilab
Abstrak: Metode titik interior merupakan salah satu metode dalam menyelesaikan suatu permasalahan optimasi linear . Dalam pencarian nilai optimal, metode titik interior bergerak di interior dari daerah fisibel. Scilab merupakan salah satu perangkat lunak yang dapat menyelesaikan masalah optimasi dengan menggunakan metode titik interior. Fungsi pengoptimuman dengan metode titik interior pada Scilab disebut dengan nama Karmarkar. Dalam tulisan ini dilakukan penyelesaian suatu masalah optimasi linear dengan menggunakan fungsi Karmarkar dan kemudian mengevaluasi fungsi Karmarkar tersebut dalam menyelesaikan masalah optimasi linear .
Keyword: metode titik interior, optimasi linear, Scilab

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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