--- a/paper/abstract_eng.tex	Wed Feb 17 20:29:45 2016 +0900
+++ b/paper/abstract_eng.tex	Thu Feb 18 07:20:46 2016 +0900
@@ -1,7 +1,14 @@
 \begin{abstract_eng}
-  We are developing parallel framework using Code/Data Segment.
-  Code/Data Segment are unit of processing and data.
-  Use Code/Data Segment in Gears OS Programming.
+  Cerium is parallel programming framework developed by C++.
+  Describe Task-Dependency for parallel computing.
+  Task-Dependency can't ensure data correctness.
+  Task parameters has no type information for the use of untyped pointer.
+  Wrong type cast will produce undefined results.
+  Object-oriented programming(OOP) is incompatible with parallel computing.
+  Continuation based C(CbC) is programming language which uses Code Segment.
+  Use Code Segment as a unit of parallel computing.
+  We are developing Gears OS using Code/Data Segment.
   Parallelism in a high performance Gears OS with Code/Data Segment.
-  We show same implementation of Gears OS using CbC(Continuation based C).
+  We show same implementation of Gears OS using CbC.
+  Gears OS implementation is a guide to programming using Code/Data Segment.
 \end{abstract_eng}