This book constitutes the refereed proceedings of the Third Asian Symposium on Programming Languages and Systems, APLAS 2005, held in Tsukuba, Japan in November 2005. The 24 revised full papers presented together with 3 invited talks were carefully reviewed and selected from 78 submissions. Among the topics covered are semantics, type theory, program transformation, static analysis, verification, programming calculi, functional programming languages, language based security, real-time systems, embedded systems, formal systems design, Java objects, program analysis and optimization.The LNAI series reports state-of-the-art results in artificial intelligence re-search， development， and education， at a high level and in both printed and electronic form. Enjoying tight cooperation with the R&D community， with numerous individuals， as well as with prestigious organizations and societies，LNAI has grown into the most comprehensive artificial intelligence research forum available.
The scope of LNAI spans the whole range of artificial intelligence and intelli-gent information processing including interdisciplinary topics in a variety of application fields. The type of material published traditionally includes.
—proceedings （published in time for the respective conference）
—post-proceedings （consisting of thoroughly revised final full papers）
—research monographs（which may be based on PhD work）.Invited Talk
Type Systems for XML
Session 1
The Essence of Dataflow Porgramming
Data Refinement with Low-Level Pointer Operations
A Simple Semantices for Polymorphic Recursion
Symbolic Execution with Sparation Logic
Session 2
An Abstract Inerpertation Perspective on Linear vs.Branching Time
The Parallel Implementation fo the Astree Statioc Analyzer
Using Datalog with Binary Decision Dagrams for Program Analysis
Loop Invarriants on Demand
Invited Talk
Integrating Physical Systems in the Static Analysis of Embedded Control Sofrware
Session 3
Reflection Analysis for Java
Lightweight Family Polymirphsm
A Portablde and Customizable Profiling Framework for Java Based on Bytecode Instruction Counting
Race Conditions is Message Sequence Charts
Invited Talk
A Next-generation Platform for Analyzing Executables
Seeion 4
Calculating Polynomial Runtime Properties
Resource Bund Certification for a Tail-Resource Usage Verification of C Like Languages
Termination Analysis of Higher-Order Functional Programs
Session 5
Heterogeneous Fixes Points with Application to Points-to Analysis
Fegister Allocation Via Coloring of Chordal Graphs
Transformation to Dynamic Single Assingnment Using a Simple Data Flow Analysis
Abstract Deperndences for Alarm Diagnosis
Session 6
A Typed, Compotitional Logic for a Stack-Based Abstract Machinge
A New Occurrence Counting Analysis for Bio Ambients
A Parmametric Model for the Amalysis of Mobile Ambients
On the Role of Abstract Non-interference in Language-Based Security
Author Lndex