Judul: Pemetaan  Sawah  Baku  Kabupaten  Subang  bagian  Barat dengan Citra Satelit ALOS.
Abstrak: Baseline rice field mapping is a mapping operation with wall to wall coverage characteristic, multi-purpose and cartographic base construction. This activity is suitable for tandem operation for routine updating of rural areal topographic map, in the rice production centre region to optimized cost. BIMAS- 21 is the first systematic method for baseline rice field mapping in Indonesia which adapt this approach. This research used ALOS PRISM and ALOS PALSAR imageries of Kabupaten Subang which ware recorded in 2007. Detailed analysis using ALOS PRISM was executed in Kecamatan Ciasem, and concentrated to the three villages: Desa Ciasembaru, Desa Ciasemtengah, and Desa Ciasemhilir. The processing of ALOS PRISM images were targeted to baseline rice field mapping, whereas the processing of ALOS PALSAR imageries were directed for plant growth monitoring, including rice phenology and planting progress acreage.
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Judul: Analisis Penutupan Lahan Sawah Kecamatan Dramaga, Kabupaten Bogor, Propinsi Jawa Barat, dengan Citra Satelit Alos/Palsar
Abstrak: Pemetaan penutup lahan sawah di Kecamatan Dramaga, Kabupaten Bogor, Provinsi Jawa Barat merupakan upaya untuk menyajikan informasi luas produksi padi di area yang bukan menjadi pusat produksi padi. Hal ini disebabkan produksi padi di wilayah ini, tidak bisa dilepas peranannya dalam produksi padi untuk wilayah Pulau Jawa. Analisis polSAR diawali dengan mereduksi speckle pada citra polarisasi HH dan HV. Filter Lee berhasil mereduksi speckle, sehingga dihasilkan citra polarisasi terfilter Lee yang mampu menampilkan objek pembatas pada sawah (diperkirakan galangan sawah) secara jelas. Hasil analisis Digital Number (DN) pada citra polarisasi tersebut menunjukkan susunan citra RGB terbaik adalah citra polarisasi HH terfilter Lee, citra polarisasi HV terfilter Lee, dan citra sintetik masing-masing pada lapisan Red, Green, dan Blue. Pengamatan bentuk pola dan posisi distibusi grafik nilai intensitas piksel-piksel pada Horizontal Profile dari citra sintetik merupakan kunci menemukan citra sintetik HV/HH sebagai citra sintetik yang paling tepat untuk menghasilkan citra RGB terbaik tersebut. Sehingga citra RGB terbaik yang terpilih adalah citra RGB HH-HV-(HV/HH). Pengamatan nilai intensitas piksel dari citra RGB berhasil mengidentifikasi hamburan balik pada sawah 3 fase yaitu sawah fase awal tanam, sawah fase vegetatif, dan sawah fase generatif.
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Judul: Model’s Dynamics for Lymphocytes Recovery on the HIV presence with Protease Inhibitor Therapy.
Abstrak: HIV is a member of retrovirus that especially attacks lymphocytes or white blood cells, known as CD4+ T cells. New T cells created from sources within the body such as the thymus and by proliferation of existing T cells. In this paper, influence of protease inhibitor therapy in HIV dynamics will be analyzed. The influence can be categoried in three models, which are model HIV without drug therapy, model HIV with protease inhibitor and model T cell recovery. In the models, three parameters which are uninfected cells population, infected cells population and virus population are studied. From HIV without drug therapy model it is obtained two types fixed point which are uninfected fixed point and infected fixed point. The stability of fixed point depends on basic reproduction number which is influenceed by the total number of virus produced by a cell during its lifetime. From HIV with protease inhibitor therapy model it is obtained two type fixed points. The stability of fixed point depends on basic reproduction number. Other than influenceed by the total number of virus produced by a cell during its lifetime, basic reproduction number of this model also affected by the effectiveness of a protease inhibitor. Basic reproduction number of this model is smaller than that of model HIV without drug therapy. In the model T cell recovery, new T cells created only from sources within the body, and T cells can be invulnerable to HIV infection after the therapy. From the model it is obtained only one fixed point that is uninfected fixed point. The stability of fixed point depends on basic reproduction number. The total number of virus produced by a cell during its lifetime and the effectiveness of a protease inhibitor determine the basic reproduction number. Basic reproduction number of this model is smallest than that of other models.
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