Judul: Distribusi Spasial Klorofil-a, Produktivitas Primer, dan TSS di Teluk Jakarta dengan Menggunakan Citra Satelit Landsat-ETM Tahun 2002 - 2011
Abstrak: Measurements of chlorophyl-a, primary production, and TSS concentration using Landsat-ETM images during the period of 2002 – 2011 particularly for southeast monsoon (dry season) have been used in order to study the dynamics of those parameters in Jakarta Bay. Chlorophyl-a and primary distributions in Jakarta Bay show higher concentration in the coastal water than open water, meanwhile TSS concentration in Jakarta Bay show a fluctuative value. On the other hand, temporal analysis produces distribution trend of the chlorophyl-a towards out of the Jakarta Bay. Distributions of primary production tend to stay in the coastal of Jakarta Bay with increased value of spreading. While the distributions trend of TSS tend to varies. In general, the distribution patterns of chlorophyl-a and primary productions are similar, but they are different with TSS distributions. Overall, the changing parameters are influenced by human activities (anthropogenic) in Jakarta Metropolitan Area.
Keyword: anthropogenic, Landsat-ETM, Jakarta Bay, TSS, primary production, chlorophyl-a, Bogor Agricultural University (IPB)

Judul: Analisis Spasial dan Temporal Kualitas Perairan (Muatan Padatan Tersuspensi dan Klorofil-a) di Teluk Jakarta pada Tahun 2002-2012 menggunakan Citra Satelit LANDSAT-7 ETM.
Abstrak: Total suspended solid and chlorophyll-a are water quality parameter which can be studied using remote sensing method. The purpose of this study was to analyzing spatially and temporally water quality (total suspended solid and chlorophyll-a) in Jakarta Bay during 2002-2012 using LANDSAT-7 ETM satelite imageries. In situ measurement of total suspended solid and chlorophyll-a sample is taken from 20 station in July 2012. Analysis of spatial and temporal distribution of the water quality parameters is then done using the satellite imageries. Algorithms used in the analysis are the Tassan for total suspended solid concentration and the Pentury algorithm for chlorophyll-a concentration. The result of this study shows that the concentrations of the total suspended solid and chlorophyll-a tend to be higher in southern and eastern parts of the bay rather then other parts of the bay during the period of 2002-2012.
Keyword: Jakarta Bay, Total suspended solid, Chlorophyll-a, Tassan, Pentury, LANDSAT-7 ETM

Judul: Truncated Stop Loss as a Optimal Solution of Reinsurance Agreement in One-Period Model
Abstrak: Reinsurance is one of risk management efforts of an insurance company, which is called the cedent. Similar with insurance, reinsurance constitutes the cedent to pay the premium. We consider one-period reinsurance model and derive a rule which minimizes the ruin probability of the cedent for a fixed reinsurance premium. Therefore, it is needed to construct an optimal reinsurance agreement for the cedent. The premium is calculated according to four different principles, i.e. economic, generalized zero-utility, Esscher, and mean-variance principles. Stop loss is a reinsurance contract which protect the insurance company for losses that exceed a certain amount. The result of this research shows that a truncated stop loss is an optimal agreement in the class of all reinsurance contracts with various premiums calculated using above mentioned principles.
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