Judul: Penerapan Metode Resampling dan K – Nearest Neighbor dalam Memprediksi Keberhasilan Studi Mahasiswa Program Magister IPB
Abstrak: Sekolah Pascasarjana IPB dipercaya menghasilkan lulusan yang berkualitas dan berdaya saing tinggi, namun berdasarkan data yang ada, terdapat sebagian kecil mahasiswa yang tidak lulus, baik mengundurkan diri maupun Drop Out. Hal tersebut perlu ditangani salah satunya dengan menerapkan metode klasifikasi KNearest Neighbor (KNN) untuk memprediksi potensi keberhasilan studi mahasiswa. Peubah respon yang digunakan adalah status keberhasilan studi mahasiswa, yaitu lulus dan tidak lulus. Sedangkan peubah penjelas adalah profil dan latar belakang pendidikan S1 mahasiswa. Terdapat ketakseimbangan pada data yang diperoleh, kelas tidak lulus berjumlah jauh lebih sedikit dibandingkan kelas lulus. Hal ini dapat menurunkan nilai akurasi klasifikasi pada kelas minoritas (sensitivitas) sehingga dilakukan penanganan ketakseimbangan data dengan menggunakan Random Over Sampling (ROS), Random Under Sampling (RUS), dan Random Over-Under Sampling (ROUS). Nilai evaluasi hasil klasifikasi KNN (k = 1 hingga 6), mengalami peningkatan nilai sensitivitas setelah disertai penanganan ketakseimbangan data, meskipun nilai akurasi dan spesifisitas mengalami penurunan. Metode KNN dengan k = 6 disertai ROS merupakan skema klasifikasi KNN terbaik dalam memprediksi potensi keberhasilan studi mahasiswa program magister IPB dibandingkan skema lainnya. Nilai rataan dan median sensitivitas sebesar 0.89 dan 0.89, nilai rataan dan median spesifisitas sebesar 0.75 dan 0.75, serta nilai rataan dan median akurasi sebesar 0.77 dan 0.77.
Keyword: Magister IPB, Ketakseimbangan Data, KNN, Resampling

Judul: Prediksi Tingkat Keberhasilan Mahasiswa Tingkat I IPB Dengan Metode k-Nearest Neighbor
Abstrak: Analysis of academic data and personal data of first-year students in IPB is necessary to predict the successful of their study in the end of the first year. One of techniques in classification that can be used for completing that task is k-nearest neighbor that will build a classifier. This research aimed to develop classifier to predict the successful of first year students at IPB. The attributes used in this research are selected based on target class-influenced statistic hipotesis test. Chi-square test is implemented for nominal attributes whereas Spearman Rank Correlation Coeficient test is used for selecting the numerical attribute. The result of this research is a classifier with accuracy 52.97%.
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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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