Judul: The typology of desa hutan rakyat (forest private villages): a case in Ciamis District
Abstrak: Management of private forest possesses specific characteristics that differ from state owned forest management. Therefore, the characteristics of desa hutan rakyat using typology approach were studied. The objective of this study was to determine private forest spatial distribution type, characteristics and types of desa hutan rakyat. This study was conducted in Ciamis District covering 363 villages. The analysis was performed on the basis of statistical data of private forest area and field data measurent and observation. The typology was developed based upon biophysical and socio-economic factors by the method of clustering analysis. There are six biophysical factors i.e. non rice field-land use, road density, distance to state forest area, distance to main road, land capacity, land configuration, and three of socio-economic factors i.e. population the spatial distribution pattern of private forest is clumped. The characteristic of private forest stand composition consist of three patterns, namely agroforestry, monoculture and polyculture. The result also shows that eight of all factors in typology determination have correlation in amount of 0.2 to 0.5 with the existence of private forest. The only factor that has no correlation with private forest area is the distance to main road. The clustering analysis produced two distinct desa hutan rakyat types, namely high potential area and low potential area types. The best variables for clustering of those desa hutan rakyat are the principle component analysis derived from eight correlated variables (non rice field land use, road density, distance to state forest area, land capacity, land configuration, population density, permanent home, and productive age population) with overall accuracy 64%. Those typologies of the desa hutan rakyat are as a preliminary information that can be used for long-term planning activities.
Keyword: Clustering analysis, desa hutan rakyat, spatial distribution pattern, principle component analysis, typology, Forest Private Villages, Ciamis District, high potential area, low potential area

Judul: Pendugaan Potensi Hutan Rakyat Menggunakan Citra Landsat 7 ETM+ di Kabupaten Ciamis Bagian Utara
Abstrak: Development of forest outside the forest area managed state today can be an alternative solution to the problem of forest resource pressures. One such alternative is the developed of private forest that are socially, economically, and ecologically profitable. Increased potential of timber forest product on private forest have significance in private forest management activities. Therefore, it is necessary to have an estimate of potential of research activities in private forest. The purpose of this research is to formulate a Estimation model of potential of private forest using Landsat 7 ETM+ imageries and create a map of distribution potential of private forest using Landsat 7 ETM+ imageries in north of Ciamis Regency. Stages of this research consisted of: preparation, image processing, field data collection, field data processing, modeling, and a map of distribution potential of private forest. The results of analysis shows the correlation between the value of NDVI with value of standing volume is high relatively (> 0,800), this case explains that the value NDVI on Landsat 7 ETM+ imageries can be used in surmise standing volume. Based on the results of the regression analysis and mapping accuracy test, selected models are used for mapping the distribution of potential of private forest in north of Ciamis Regency is the exponential models is V = 20,905*℮(1,765*NDVI) with R2 values of 62,8%, Kappa Accuracy of 30,9%, and the value of Overall Accuracy of 56%. Overall the location of villages surveyed are had a potency between 44,6 m3/ha up to 78,3 m3/ha with a total potential of private forest between 1.366,9 m3 up to 70.868,4 m3.
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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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