Judul: Analysis land use spatial temporal database development using ArcGIS And PostGIS
Abstrak: In Indonesia, there is a tendency of accumulation of spatial data particularly land use data as monitoring task become an important aspect for many institutions. This create new problem for handling large spatial data. Objective of this research is to develop spatio-temporal database which state and maintain spatio-temporal land use change with queries. Spatio-temporal database can perform a various land use changes. This research methodology is started from preprocessing to obtaina clean data, and planning to build a database such as conceptual planning, logical planning, and physical planning. Finallyquery analysis.This research use entire data of the land use in the Central Kalimantan on 2000, 2005, and 2009. This researchcan be finding the spatio-temporal database of land usechange and to produce useful information to analyst and decision making of land use change. The database management system can performs of land use change query to be faster and easier than standard query.
Keyword: spatial temporal, spatial temporal database, query, land use change

Judul: Implementasi Operator Temporal dan Spasial pada Data Spatiotemporal
Abstrak: The spatio-temporal data models and query languages have received much attention in the database research community because of their practical importance and the interesting technical challenges they pose. The previous research has successfully implemented temporal and spatial operator to retrieve specific information of spatio-temporal data, but only an example data was used. In this research, the implementation of the temporal and spatial operator using real data was shown. There were two data used, namely the land cover data in Kalimantan island from 2000-2009, and land use data in some region of Indonesia from 1994 and 2001. The research complexity increased because of the different attributes of real data as compared with example data. The method in this research consist of data preprossesing, temporal operator implementation, spatial operator implementation, spatio-temporal operator implementation, and testing. The preprocessing include data cleaning, and data model transformation. The temporal operator used in this research were history, after, before, when, between, first, last and past. Meanwhile, the spatial operator used were intersection, equal, touches, cover, coveredby, distance, overlap, contain and within. The result showed that the spatio-temporal operator can produce a more spesific information retrieval rather than that without using spatio-temporal query. The research also verified that spatio-temporal operator can be used in real problems
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Judul: Pelumas Aktif Dengan Bahan Dasar Minyak Ikan Dan Aditif Znochitosan Particle.
Abstrak: Pelumas memiliki peranan penting dalam meminimalkan fungsi keausan pada sistem mekanik. Synthetic liquids, minyak nabati (biolubricant) serta berbagai aditif telah banyak digunakan. Karakteristik minyak ikan dan sifat fungsional chitosan yang dapat berperan sebagai aditif, merupakan peluang dalam pengembangan pelumas baru yang ramah lingkungan. Tujuan penelitian adalah melakukan pembuatan dan karakterisasi pelumas aktif dengan bahan dasar minyak ikan dan aditif partikel ZnO-chitosan. Minyak dasar pelumas dibuat melalui reaksi epoksidasi minyak ikan dengan karakteristik bilangan oksiran (4,74±0,09) %, bilangan iod (49,91±1,9) gI2/100g, bilangan peroksida (59,33±3,05) meq/kg, dan asam lemak bebas (11,07± 0,10) %. Kombinasi aditif ZnO 0,5% dengan partikel chitosan 0,5% memberikan pengaruh terhadap pelumas minyak ikan dengan karakteristik terbaik, berupa scar diameter (1,16±0,04) mm, viskositas kinematik pada suhu 40°C (66,50±0,35) mm2/s dan korosi bilah tembaga grade 1A.
Keyword: Chitosan, minyak ikan, pelumas, ZnO