BUKU ABSTRAK - Universiti Putra Malaysia

Science, Technology & Engineering
Fabrication of Functionally Graded Material by Pressureless Method
Dr. Faizal Mustapha
Ali Shahrjedi
Faculty of Engineering, University Putra Malaysia,
43400 UPM Serdang, Selangor, Malaysia.
+603-8964 6404; faizal@eng.upm.edu.my
Functionally Graded Metal-Ceramic composite was fabricated by pressureless sintering method. The pure
metallic component (Ti) and pure ceramic component (HA) are located at the ends of a cylindrical specimen.
The composition (in %weight) of layers was 100% pure Titanium; 75% Titanium+25% HA ; 50% Titanium+50%
HA; 25% Titanium+75% HP; 100% pure HA . The properties of the developed FGM surface morphology and
shrinkage measuring after sintering were characterised by scanning electron microscope (SEM).
Keywords: Functionally graded material, fabrication, pressureless method, hydroxyapatite-titanium
Parser Generators for Programme Understanding System
Dr. Nor Fazlida Mohd. Sani
Abdul Azim Abdul Ghani and Norazimah Rosidi
Faculty of Computer Science and Information Technology, University Putra Malaysia,
43400 UPM Serdang, Selangor, Malaysia.
+603-8946 6585; fazlida@fsktm.upm.edu.my
Parser generator is a tool that reads a grammar specification and converts it to a programme that can recognise
matches to the grammar. The purpose of this research is to test and examine the available parser generators and to
find out which is suitable to be used with our Programme Understanding System. The chosen parser generator is an
ANTLR (Another Tool for Language Recognition). ANTLRWorks is a novel grammar development environment
for ANTLR version3 grammars. ANTLRWorks will generate parse tree and abstract syntax tree (AST) as output.
Parse Tree is a record of rules and token used to match some input texts where as a syntax tree record the structure
of the input. Meanwhile AST contains essentially the same information as the parse tree but in a more compact
form. A case study has been conducted by inputting an object-oriented programming code which is Java to the
ANTLR. Presented is the result of this parser generator in the form of an AST.
Keywords: Parsing, parser generators, programme understanding system
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