Judul: Monitoring Luas Hutan Rakyat Berdasarkan Citra Landsat : Kasus di Kecamatan Cikalong, Kabupaten Tasikmalaya, Jawa Barat
Abstrak: Penelitian ini dilakukan di Kecamatan Cikalong, Kabupaten Tasikmalaya, Jawa Barat dengan menggunakan citra Landsat tahun 1994, 2000, 2005, dan 2010. Klasifikasi tutupan lahan dilakukan secara visual pada citra tahun 2005 dan 2010 dan secara digital pada citra tahun 1994 dan 2000. Identifikasi faktor-faktor yang mempengaruhi perkembangan luas hutan rakyat dilakukan secara open type interview dan nonstructured interview. Evaluasi keberhasilan dilakukan dengan uji akurasi (kappa, overall, user, dan producer) serta analisis separabilitas. Sedangkan metode dalam analisis perubahan hutan rakyat adalah post-classification comparasion. Hasil analisis digital citra Landsat menampilkan 12 kelas tutupan lahan yaitu badan air, hutan tanaman jati, lahan terbuka, pemukiman, hutan rakyat, kebun campuran, pertanian lahan kering, rawa semak, sawah, semak/belukar, awan, dan bayangan awan. Sedangkan analisis visual citra Landsat menampilkan 10 kelas dengan jenis kelas yang sama dengan analisis digital tanpa adanya kelas awan dan bayangan awan. Hasil akurasi klasifikasi citra Landsat didapatkan nilai kappa 97,21 %, overal 98,18 %, user 96,66 %, dan producer 97,85 % pada citra tahun 2010. Nilai kappa 93,03 %, overall 95,45 %, user 92,62 %, dan producer 97,39 % pada citra tahun 2005. Nilai kappa 87,6 %, overall 89,14 %, user 91,88 %, dan producer 85,86 % pada citra tahun 2000. Selanjutnya nilai kappa 89,03 %, overall 90,32 %, user 90,93%, dan producer 84,45 % pada citra tahun 1994, dst
Keyword: Bogor Agricultural University, Hutan Rakyat, Monitoring, Intrepetasi, Institut Pertanian Bogor, IPB, Citra Landsat Hutan Rakyat, Monitoring, Intrepetasi

Judul: Monitoring Luas Hutan Rakyat Berdasarkan Citra Landsat : Kasus di Kecamatan Cikalong, Kabupaten Tasikmalaya, Jawa Barat
Abstrak: Increasing of community forest become larger than previous age related to increasing of spatial monitoring to the community forest development, the objective of this program to support the operational management development in future. To help presenting the information and updatable quickly, remote sensing technology with Landsat satelite is a method to monitor the changing community forest area. This research held in Cikalong District, Tasikmalaya Regency, West Java by using citra landsat which captured in 1994, 2000, 2005 and 2010. Land cover classification visual analysis in citra 2005 and 2010 and digital analysis in citra 1994 and 2000. Factors that influence to the development of community forest area were identified by using open type interview and non-structured interview methods. Success evaluation measured by using accuracy test (kappa, overall, user and producer) and separability analysis. While, the measurement to analyze alteration from community forest area by using the post classification comparasion method. The result from digital analysis by using citra landsat showed 12 classes of land covers, i.e water flow, plantation forest, open area, settlement, community forest, mixing farm, dry agriculture area, swamp, rice field, bush, cloud, and cloud shadow. Citra Landsat visual analysis showed 10 classes similar with digital analysis without cloud and cloud shadow. Accuracy result from citra landsat classification showed the value of kappa 97,21 %, overall 98,18 %, user 96,66 %, and producer 97,85 % in citra 2010. The value of kappa 93,03 %, overall 95,45 %, user 92,62 %, and producer 97,39 % in citra 2005. Value of kappa 87,6 %, overall 89,14 %, user 91,88 %, and producer 85,86 % in citra 2000. Value of kappa 89,03 %, overall 90,32 %, user 90,93%, and producer 84,45 % in 1994. The period between 1994-2010 community forests increased dynamically because of over function land use to be community forests especially mixing farm and dry agricultural area. In 1994 community forest showed at 4282,45 ha , 6501,61 ha in 2000, 8077,41 in 2005 and 8157,41 in 2010. The factors that influence increasing community forests is land tenure, good market access, good institutional, planting culture or local wisdom and success story about community woods entrepreneur between local community.
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Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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