Judul: Development of Land Suitability Evaluation System for Coastal Aquaculture Using Artificial Neural Network and Geographical Information Systems (Case Study: Mahakam Delta, East Kalimantan).
Abstrak: Land suitability is the aptitude of given type of land to support a certain use. Land suitability is one of key factors for the sustainability of aquaculture system. It can be determined by using matching methods between land suitability criteria and land characteristics, such as topography, hydrography, climate, water characteristic, risk, land cover, and spatial plan aspects. Evaluation of land for aquaculture suitability can be reached using a parametric approach, which is implemented by using the distinguish land characteristics and combination of it. Parametric approach uses the numeric value, which classifies the land based on individual characteristics. The objectives of the research are to develop a land evaluation system on aquaculture suitability by using artificial neural network (ANN) and geographical information system (GIS) and to evaluate the performance of the new developed system as compared to GIS vector spatial analysis method. Four types of suitability were defined, i.e. highly suitable (S 1 ), moderately suitable (S2), marginally suitable (S3) and not suitable (N). The new developed GIS model uses the raster format and ANN classifier. The performance of GIS model was then evaluated, and compared to the vector map overlay that used GIS spatial analysis features, including suitability distribution, covered area, processing speed and validity. The multilayer feedforward of the ANN with backpropagation learning algorithm was chosen to do the classification. GIS overlaid layer in form of spatial database was then converted into training dataset, validation dataset and prediction dataset. Training and validation dataset contains a pair of input and output, while the prediction dataset contains input data only…dst
Keyword: Spatial Analysis, Vector Data Analysis, Raster Data Analysis, Land Suitability, Coastal-Aquaculture

Judul: Land Suitability Evaluation and Shrimp Culture Information System Development of PT. Indonusa Yudha Perwita
Abstrak: Utilization of GIS excess in land suitability analysis and Shrimp Culture Information System development of PT Indonusa Yudha Perwita (PT. IYP) are based on the absence of land suitability information and the lack of computerized data management. The study is designed to evaluate land suitability of PT. IYP’s ponds, to develop information system for aquaculture data management, and to analyze relation of land suitability of ponds and aquaculture operational success. The analysis of land suitability is performed by using multicriteria biophysical, and constraint factors like legislation to protect mangroves as buffer zone along coastline. Information system is built through requirement analysis stages, system design, and system development. The result of land suitability analysis is that 11.13 ha ponds area of PT. IYP located in moderately suitable class, and the rest 11.71 ha is very suitable. Due to government regulation in Keppres no. 32/ 1990, the moderately suitable area is designated as coastal greenbelt of mangrove. Shrimp Culture Information System of PT. IYP is able to provide efficiency, especially in time and data storage. Its capability in data processing, including, spatial comparison, temporal variation, and algebra application (FCR, SR, ADG, etc.), provides efficiency in evaluating shrimp culture activities. Lower yield from ponds locating on moderately suitable area than that from ponds in very suitable land is revealed as relation land suitability of PT. IYP to its production value.
Keyword: 

Judul: Sintesis Flavon dari Fenol dan Benzoil Klorida
Abstrak: Flavone is a class of flavonoid, commonly found in plants with wide bioactivity spectrum. A widely used flavone synthesis route is through acidcatalyzed oxidative cyclization of β-diketone. In this study, unsubstituted flavone had been synthesized via 5-step from phenol, with 22% yield and successfully increased the yield of previous study on Fries rearrangement of phenyl acetate and benzoylation of o-HAP steps. Phenol was acetylated resulting 93% phenyl acetate. AlCl3-catalyzed Fries rearrangement in 1.5 hour and at 120 °C converted phenyl acetate into o-hydroxyacetophenone (o-HAP) with 40% yield. AlCl3 as catalyst produced o-HAP with higher and reproducible yield compared with BF3·Et2O and ZnCl2. Benzoylation of o-HAP followed by Baker-Venkataraman rearrangement of the ester product using KOH in dried pyridine produced β-diketone 1-(2- hydroxyphenyl)-3-phenylpropane-1,3-dione. The yield of ester and β-diketone were 71% and 85%, respectively. Finally, oxidative cyclization of β-diketone with sulphuric acid as catalyst produced 99% of flavone. The flavone product had been characterized spectroscopically and its melting point as well.
Keyword: