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: The Development of Word Graph Formation System For Indonesian Text.
Abstrak: Knowledge graph is a new method which is used to describe and model natural language or human language. A word is a basic unit of natural language processing. Word graph is a graph which has connected structure of words. Ontology between word and token in word graph is represented by a node, 8 binary relationships, 4 frame relationships, and a focus. In this research, a system to construct a word graph from Indonesian text is developed. The software was initially developed by Mark van Koningsveld, which is called DelftCoStruct. On the previous version, knowledge graph method is not fully implemented. The first step in this research is analyzing the outline description and the requirement system. There are three principal requirements: formation and modification of word graph, analyzing text in word graph, and saving the dictionary capabilities. The second step in this research is designing specification system. The third step is developing and implementing the system designed. And the last step is validating system, to ensuring that all the requirements is fully implemented on this system. Keywords : natural language processing, knowledge graph, word graph, token, ontology, frame
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Judul: Characterizations of low alloy steel sae 4422  plated with chromic acid (Cro3)
Abstrak: Characterizations of low alloy steel SAE 4422 plated with chromic acid (CrOrO3) was use Optical Microscopy (OM), Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), RD),Energy Dispersive Analysis of X-Ray (EDAX), Hardness Test and Roughness Test. Microstructures analysis exhibits cracks and grain boundaries microcracks as a characteristics of chrome metal found at plating metal. Perlite and Ferrite as grains of steel found at base metal with grain boundaries around it. Phase analysis of plating metal appropriate to chrome metal with lattice constant (a) is 2.559 Å and phase analysis of base metal appropriate to iron ferrite with lattice constant (a) is 3.318 Å. Both plating and base metal have cubic system. Chemical analysis of plating metal at surface section exhibits that cracks area have highest value of carbon element compare with grains and grains boundaries area. While chemical analysis of base metal at cross section exhibits that perlite have highest value of carbon element compare with ferrite and grain boundaries. The hardness value of plating metal at surface section and cross section are 753 and 637 VHN. While, the hardness value of base metal and interface area at cross section are 205 and 373 VHN. The roughness value at measurement points of chrome surface for as received sample are 0.445 μm. Observation used Optical Microscopy and Scanning Electron Microscopy exhibits surface irregularities combine to form surface texture of plating metal at surface section.
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