Judul: Spatio-temporal Clustering Hotspot di Sumatera Selatan Tahun 2002-2003 Menggunakan Algoritme ST-DBSCAN dan Bahasa Pemrograman Python
Abstrak: These last few years the issues of forest fire in Sumatera increase dramatically, attracting international attention. Hotspot data which are monitored using satellites can be used as an indicator of the occurrence of fire on the Earth's surface. One approach to analyze hotspot dataset is spatio-temporal clustering which can recognize patterns of hotspot event based on space and time. This study applies ST-DBSCAN clustering using hotspot data in South Sumatera 2002-2003. As multi-paradigm programming language, Python is chosen so that STDBSCAN algorithm can work fast. By using spatial distance (Eps1) 22 km, temporal distance (Eps2) 7 days, and density of cluster (MinPts) 7, 41 clusters were found to have many stationary patterns in Musi Banyu Asin. The average ST-DBSCAN execution runtime using Python was 4.934 seconds
Keyword: ST-DBSCAN, spatio-temporal clustering, Python, forest fire

Judul: Spatio-Temporal Clustering Hotspot di Sumatera Selatan Tahun 2002-2003 Menggunakan Algoritme ST-DBSCAN dan Bahasa Pemrograman R
Abstrak: Forest fire is a serious problem in Indonesia. One indicator of forest fire possibility can be seen through the occurence of hotspots. Hotspot dataset is large spatial data because it is recorded continuously. ST-DBSCAN an algorithm that can process spatial and temporal data. This study implement ST-DBSCAN algorithm with R language programming. R is software environment for statistical computing and graphics. The R language is widely used among statisticians and data miners for developing statistical software. Clustering is performed on hotspots dataset in South Sumatra in the period 2002-2003. By using the spatial distance parameter (Eps1) = 0.2, the temporal distance parameters (Eps2) = 7 and a minimum cluster members (MinPts) = 7 resulted in 41 clusters with 712 noises.
Keyword: ST-DBSCAN, spatio-temporal, hotspot, R, forest fire

Judul: Development of ready-to-drink white tea shot.
Abstrak: White tea leaf has been shown to possess physiological activities and has catechin which is the most abundant antioxidant compound found. This study was conducted to develop white tea shot formulated with white tea extract (WTE), ascorbic acid (AA), and sucrose (SC) in order to get high stability of catechin in the product. The first part of the study was conducted to choose best formula of white tea shot. The amount of water was set at 50 ml while WTE was set at 0.4% water basis. AA and SC amount were varied at 0.02, 0.05, 0.10% for AA and 3.0 and 6.0% for SC. The formula chosen was consists of 50 ml water, 0.4 % WTE, 0.10% AA, and 6.0% of SC. The decision was based on the rating hedonic test and short time storage catechin stability analysis of six formulation which the chosen formula revealed the least catechin lost and acceptable overall product likeness. The study also revealed that addition of AA is significant to lower catechin loss (P<0.05) while addition of SC did not reveal any effect (P>0.05). Physical, chemical, and microbiological characteristic was also observed in this study.
Keyword: Catechin, product development, white tea