Judul: Kegunaan Analisi Kanonik Dalam Analisis Citra Digital dengan Suatu Studi Kasus Daerah Darmada dan Sekitarnya, Jawa Barat
Abstrak: Tujuan praktek lapang ini adalah untuk menjajaki kegunaan analisis kanonik dalam analisis citra digital, dengan harapan analisis kanonik ini akan dapat mereduksi dimensi data dan dapat memperjelas perbedaan antara suatu obyek dengan obyek lain dalam citra yang dianalisis. Manfaat dari analisis kanonik ini dapat dilihat dari kemampuannya untuk mereduksi dimensi dari citra semula sehingga dimensinya menjadi lebih sedikit akan tetapi hasil citra tersebut sudah mewakili informasi-informasi data semula. Hasil citra transformasi yang penampilannya secara visual maupun numerik lebih jelas daripada penampilan sebelum transformasi menunjukkan bahwa citra hasil transformasi tersebut sudah dapat mewakili hampir semua informasi dari citra asal. Semakin merentangnya jarak Mahalanobis antar kelas dari citra hasil transformasi (terutama yang jaraknya semula dekat) menunjukkan bahwa analisis kanonik ini berguna sebagai tahap awal dari klasifikasi.
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Judul: Study of several digital image classification methods for remote sensing Data
Abstrak: Klasifikasi citra digital terdiri dari banyak metode alternatif yang menghasilkan tingkat akurasi berbeda-beda. Akurasi ini sangat tergantung pada beberapa hal seperti training sample dan keragaman kenampakan lahan pada daerah citra yang dikaji. Penelitian ini bertujuan untuk membandingkan 4 metode klasifikasi citra digital yang diterapkan pada daerah dengan tingkat keragaman kenampakan lahan yang berbeda yaitu Kecamatan Ciomas, Kecamatan Dramaga dan Kecamatan Cibungbulang. Metode klasifikasi citra digital yang digunakan pada penelitian ini adalah kemungkinan maksimum, jarak Mahalanobis, jaringan syaraf tiruan dan support vector machine. Hasil penelitian ini menyimpulkan bahwa kemungkinan maksimum merupakan metode klasifikasi citra yang paling baik pada citra di tiga kecamatan terpilih dengan nilai rata-rata akurasi keseluruhan sebesar 91.99% dan nilai rata-rata koefisien kappa sebesar 0.8772. Selain itu, metode support vector machine dan jaringan syaraf tiruan juga memberikan hasil yang cukup baik., Digital image classification is composed of many alternative methods that produced different levels of accuracy. This accuracy depends on several things such as training samples and the diversity of land on the appearance of the image regions studied. This study aimed to compare 4 digital image classification method which applied to areas with different land appearance diversity of the District Ciomas, District Dramaga and District Cibungbulang. Digital image classification methods that used in this study are maximum likelihood, Mahalanobis distance, artificial neural networks and support vector machine. The results of this study concluded that the maximum likelihood is the best image of image classification method of the three district chosen with the average value of overall accuracy was 91.99% and the average value of the kappa coefficient was 0.8772. In addition, support vector machine and artificial neural networks also provide good results. Keywords: commission error, image classification, kappa coefficient, omission error, overall accuracy
Keyword: akurasi keseluruhan, kesalahan komisi, kesalahan omisi, klasifikasi citra, koefisien kappa

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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