Judul: Implementation of Spatio-Temporal Change Query in Relational Database.
Abstrak: Geographic object changes in various views. Object changes are recorded using a model of static storage. No historical connection between old version data and new version data has been built. For that, a storage model of spatio-temporal queries that can analyze spatio-temporal changes has been developed. The object changes the geometry are grouped according to the taxonomy of Spatio-Temporal Pattern Change. This research has been able to apply the query patterns change including born, expand, merge, contract, split, normal and die. This query based on geometric (area) changes. The implementation of spatio-temporal change queries represents an object changes continuously with easy, change detection is done by comparing two versions of data. Keyword: spatio-temporal change query, spatio-temporal change pattern.
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Judul: Implementasi Operator Perbandingan Temporal dan Operator Spasial pada Data Spatiotemporal
Abstrak: 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. Much previous work focuses on either temporal information or spatial information. In this research, we will learn about information retrieval using temporal and spatial in spatio-temporal data. The method in this research consists of data model, design temporal operator, design spatial operator, design spatio-temporal operator and testing. Temporal operators that used in this research are before, after, during, precedes, follows, starts, finishes, equal, meet and overlap. While spatial operators that used are equal, overlap, contain, disjoint, meet, adjacent and commonborder. In spatial model, the method use triangles to represent polygons and is called The Directed Triangulation. A polygon having n vertexes can be decomposed into n-2 triangles. Decomposing a polygon into a set of triangles makes determine spatial relationships between two polygon can be done more easyly. This research concludes that by using spatio-temporal operators, information retrieval will produce more specific information than that of using without spatio-temporal query. Spatial operators can give information about relationship between two region or more and temporal operator can give information about time.
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Judul: Mempelajari Pembuatan Margarin dari RBD Stearin Serta Karakterisasi Mutunya
Abstrak: Penelitian ini bertujuan untuk mempelajari pembuatan margarin dengan menggunakan RBD Stearin dari kelapa sawit tanpa melalui proses hidrogenasi. Bahan-bahan yang digunakan untuk pembuatan margarin adalah RBD Stearin, RBD Olein, emulsifier (lecithin dan dimodan), f-karoten, garam, air serta Na-benzoat. Tiga perlakuan yang digunakan dalam penelitian ini adalah jenis emulsifier (A), konsentrasi emulsifier (B) dan lama homogenasi (C). Jenis emulsifier yang digunakan adalah lecithin dan dimodan dengan konsentrasi 0.2%, 0.3% dan 0.4%, serta lama homogenasi 60, 70 dan 80 menit. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap Faktorial dengan dua kali ulangan. Margarin dapat dihasilkan dengan mencampurkan RBD Stea- rin (72%), RBD Olein (8%), air (16%), garam (3.7%), emulsifier (0.3%), Butter Flavor (0.40 ml untuk setiap 250 gram margarin) dan ẞ-karoten (0.15 ml untuk setiap 250 gram margarin) selama 60 menit dengan menggunakan suhu proses 54°C. Hasil penelitian menunjukkan bahwa margarin yang dihasilkan mempunyai sifat emulsi yang stabil sampai suhu 45°C, tidak ditumbuhi mikroorganisme pada pengamatan 1 bu- lan setelah pembuatannya dan tidak mengandung logam berba- haya. Selain itu margarin tersebut dapat diterima oleh panelis dan mampu bersaing dengan margarin yang sudah ada di pasaran. Jenis emulsifier (A) berpengaruh nyata terhadap tekstur margarin yang dihasilkan. Konsentrasi emul- sifier (B) berpengaruh nyata terhadap kadar air, sedangkan semua perlakuan yang dicobakan tidak mempengaruhi Bilangan Asam, kadar FFA dan Bilangan Peroksida. Konsentrasi emulsifier 0.3% (B2) dinilai lebih mampu berikatan dengan air secara proporsional pada sistem emulsinya dibandingkan konsentrasi emulsifier 0.4% (B3). Selain itu jenis emulsifier lecithin (A₁) memberikan tekstur yang lebih baik dan lebih disukai oleh panelis diban- dingkan jenis emulsifier dimodan (A2)….
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