Judul: Citra Ikonos untuk Identifikasi Batas Petakan dan Penggunaan Lahan Pertanian di Desa Ciburuy, Kecamatan Cigombong, Kabupaten Bogor
Abstrak: Ikonos imagery has not been maximized because we just use it to get an overview of the rice field in the context of blocks or land use. Another potential that could be develope is to create the boundary of plot ownership and authority. The objective of this research is to identify the plot and agricultural land use, verification the plot of agricultural land into parcels of land, and knowing the status of authority and patterns of agricultural land management. Accuracy value for plots identification is 69%. This value affected by the difficulty in identification when the appearance of the dykes faintly visible on the image, ability and experience of the interpreter, and the image recording time that too far to the field survey and mapping process. Meanwhile, accuracy value for land use identification is 90%. Ikonos imagery has potential for mapping the boundary of agricultural land plots which used as a material for parcel mapping and the authority status during field verification. Field verification becomes an important task to do because the parcel boundaries can not be seen directly through the image. The authority status in the Desa Ciburuy is the owners and landless farmers and the highest number is the status of landless farmers. Cropping pattern that is widely used is rice-rice and rice block dominate the agricultural land in the Desa Ciburuy. Land area, cropping patterns and authority status does affect the profit.
Keyword: landless farmers, owner, parcel, image interpretation, Ikonos Image

Judul: Pemanfaatan Citra Ikonos untuk Identifikasi Petak Sawah dan Penggunaan Lahan Sawah/Tegalan di Dusun 2, Desa Cikarawang, Kecamatan Dramaga.
Abstrak: Ikonos image has high spatial resolution with pixel of one meter for panchromatic and four meter for multispectral. The objective of this research are to know, a) potency of Ikonos image to create physical land bording and land use map and their problems, b) pattern of land tenure and land management and c) characteristic of land tenure and land management. The problem in the development of physical bording of land map in Dusun 2, Desa Cikarawang are no identifier, for drawing plot of land such as color and the border of land. The result of interpretation is 293 plot of land, where is the result of verification is 608 plot of land. Physical border of land interpretation accuracy is 48.12 %. The accuracy interpretation of land cover/land use are 40.11 % for paddy field and 65.09 % for dry land. Physical border of land percentages of land cover/land use after verification are paddy field 39.36%, dry land 55.78%, mixturegarden 4.69% and bare land 1%. Out of 608 physical bording of land founded their consist of 1 plot of land fishpond, 1 plot of land other court, 10 plot of land homesite, and 596 agricultural plot of land with plot of land acreage average is 1918.7 m2. At Dusun 2, Desa Cikarawang found two tenure system is land self managed and land rent share. In addition, there are 197 parcel of land with full ownership. The number of land self managed system is more than the number of land rend share system. In the land rend shere system applied production sharing, 40 % of belong to the owner and 60% belong the worker. The owner and the worker in Dusun 2, Desa Cikarawang, dominantly have elementary school level of education and age ranging from 41-60 years old.
Keyword: physical of land., image interpretation, image Ikonos

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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