Judul: Pengembangan WordNet Bahasa Indonesia Berbasis Web
Abstrak: WordNet is an electronic lexical database that classifies categories of words such as nouns, adjectives, verbs, adverbs, and others in a set called synonim set (synset). WordNet for English has been developed by Princeton University. The purpose of this study is to build an web-based WordNet for Bahasa Indonesia. We used evolutionary method that started by building the parts that were wellunderstood as the first implementation and continuously developed based on comments from users until an adequate application had been developed. The data sources of the application are Kamus Besar Bahasa Indonesia (KBBI) and Indonesian thesaurus. Our application can display the meaning/definition of a word and display a word’s relations with other words. This application can also be used to add new words, definitions, examples, and word relationships; this function can only be done by users who have registered and been approved for registration by administrator. In this study we also developed an XML document format and XML Schema Definition to assist others in obtaining data from the system.
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Judul: Sistem Viewer Modul Word Graph Berbasis XML
Abstrak: Text processing is one part of natural language processing technology that analyses the meaning of text. The meaning of text can be represented as knowledge. One method of representing knowledge in the form of a graph is Knowledge Graph (KG). KG implementation in semantic analysis is expected to help automatic text abstraction process. To analyse the meaning of Indonesian text, BogorDelftConstruct has developed based on DelftConstruct using MATLAB programming language which is not freely accessible. The Objective of this research is to develop an XML -based web application to view word graphs. This system is developed in Javascript. The testing is performed using 21 word graph patterns of Indonesian adjective and 26 word graph patterns of Indonesian prepositional phrases represented in XML. The system can draw all of the patterns successfully.
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Judul: Karakteristik Piezoelektrik Film LaxSr₁-xTiO3 di atas Substrat TCO
Abstrak: Studi material perovskite SrTiO3 sudah banyak dilakukan dan menunjukkan sifat feroelektrik, piezoelektrik, kuantum paraelektrik dan superkonduktor yang baik. Dengan penambahan dopant La2O3 diduga menambah performa sifat piezo dan karakteristik lainnya. Karakteristik film LaxSr₁-xTiO3 (LST) dengan variasi x= 0, 0.02, 0.04, 0.06 terbentuk pada suhu annealing 550 oC di atas substrat TCO melalui metode (Chemical Solution Deposition) CSD dan spin coating dengan 700 rpm pada kondisi suhu ruang dan tekanan atmosfer standar. Hasil menunjukkan, semakin banyak pendadah La maka nilai ketebalan film, ukuran rerata kristalit, parameter kisi, transmitansi, nilai konduktivitas (maksimum 589.7 S/cm pada sampel x=0.04 di frekuensi 10 Hz), nilai konstanta tegangan (c) dan muatan (d) piezo semakin meningkat. Dinamika bentuk grafik nilai tegangan (V) dan konstanta regangan mekanik (s) nampak mirip. Nilai V mencapai 0.127 V untuk x=0.06 (beban 50 g). Nilai maksimum c, d, s masing-masing mencapai 20.07 Vm/N, 1.14x10-8 C/N, 13642.71. Nilai band gap untuk x=0, 0.02, 0.04, 0.06 masing-masing 3.21 eV, 3.1 eV, 2.6 eV, 2.4 eV. La2O3 menambah performa sifat piezo, sehingga LST berpotensi sebagai sensor tekanan.
Keyword: CSD method, La2O3, LaxSr1-xTiO3, piezoelectric, TCO