Judul: Forest Fire Spatio-Temporal Data Warehouse using GeoMondrian and GeoServer
Abstrak: Indonesia is a country that has tremendous wealth of forests in the world. But Indonesia's forests decreases each year by deforestation amounted to 1.87 million hectares (FAO 2007). One of the main causes of deforestation in Indonesia is forest fires. Catastrophic forest fires cause major problems and need complex ways to overcome. One form of forest fire prevention is monitoring hotspots using the National Oceanic and Atmospheric Administration (NOAA) satellites. This satellite imagery capturing the form of hotspots, which could indicate the existence of forest fires based on location and time. Data obtained from these satellites have particularly large amount, causing the accumulation of data hotspot. This can be overcome by the presence spatio-temporal data warehouse technology with Spatial Online Analytical Processing (SOLAP) applications. Spatio-temporal data warehouse capabilities in integrating data into a quick and comprehensive information to assist decision-making process in terms of controlling forest fires. This study developed a geographic information system that integrates data warehousing applications spatio-temporaly with Spatial On-Line Analytical Processing (SOLAP) application using the framework Geomondrian and Geoserver as a web map server. Pre-process data such as data extraction, data transformation and loading of data, performed before the data warehouse is built in accordance with the dimensional data model (the concept of design in building a data warehouse) and integrated with Geoserver that handles the presentation of data in map form. The system was developed to visualize data of forest fires in the form of pivot tables, graphs and maps spread of hotspots in a web-based environment, so the system can support decision-making in an effort to control forest fire in Indonesia.
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Judul: Peningkatan Kinerja Sistem Spatial Data Warehouse Kebakaran Hutan Menggunakan GeoServer dan GeoMondrian
Abstrak: Forest fire can be periodically detected by satellite as hotspot areas that occur at specified time and location. The frequency of forest fire in Indonesia is high so the data collection of hotspots will be very large. That data collection of hotspots can be stored into specific storage such as data warehouse. A data warehouse system of forest fire was built in the previous research using GeoServer as web map server and GeoMondrian as OLAP Server. However, that system still has some limitations such as the poor system runtime and the low amount of retrieved hotspots. In this research, the system would be reconfigurated in order to fix those limitations so that the system performance would increase. The configuration involves some part of the system including Java Runtime Environment, database source, data cube schema, and error handling in OpenLayers. It has resulted 155 ms higher speed of runtime and 1310 higher number of retrieved hotspots.
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Judul: Respon Sel Leydig Dari Mencit Neonatal Terhadap Hcg Selama Kultur In Vitro.
Abstrak: Sel Leydig merupakan sel penghasil hormon testosteron pada hewan jantan. Berdasarkan tingkat kematangan, populasinya terbagi menjadi sel Leydig fetal dan sel Leydig dewasa. Hormon human chorionic gonadotropin (hCG) adalah salah satu faktor yang memengaruhi proliferasi dan diferensiasi pada sel Leydig dewasa, tetapi belum diketahui pengaruhnya pada sel Leydig fetal. Penelitian ini bertujuan untuk menjajaki respon sel Leydig fetal terhadap penambahan hCG pada kultur in vitro dengan menggunakan sel Leydig yang diisolasi dari mencit neonatal. Sel Leydig diisolasi dari mencit neonatal umur tiga hari, dikultur in vitro selama enam hari, dan diberi perlakuan dengan dan tanpa penambahan hCG. Data yang dievaluasi berupa tingkat proliferasi (population doubling time, PDT) dan jumlah sel yang mengekspresikan keberadaan enzim 3β-HSD. Hasil penelitian menunjukkan bahwa penambahan hCG pada kultur in vitro sel Leydig dewasa meningkatkan proliferasi sel, sebaliknya pada sel Leydig fetal menurunkan proliferasi sel. Penambahan hCG tidak memengaruhi persentase jumlah sel Leydig dari mencit neonatal yang mengekspresikan enzim 3β-HSD. Dapat disimpulkan bahwa sel Leydig fetal dari mencit neonatal memiliki respon yang berbeda dengan sel Leydig dewasa terhadap penambahan hCG secara in vitro.
Keyword: hCG, kultur in vitro, mencit neonatal, proliferasi, sel Leydig