Regular Section =============== PAPERS ====== [Automata, Languages and Theory of Computing] . Note on Inclusion Properties of Subclasses of Context-Free Tree Language ........................................................ 905 Katsunori YAMASAKI . Some Properties of Deterministic Restricted One-Counter Automata 914 Ken HIGUCHI, Mitsuo WAKATSUKI, and Etsuji TOMITA [Computer Systems] . Analytic Modeling of Cache Coherence Based Parallel Computers ... 925 Kazuki JOE and Akira FUKUDA [Software Theory] . An Efficient Dynamic Threshold Scheme ........................... 936 Shin-Jia HWANG, Chin-Chen CHANG, and Wei-Pang YANG [Image Processing, Computer Graphics and Pattern Recognition] . Handwritten Korean Character Image Database PE92 ................ 943 Dae-Hwan KIM, Young-Sup HWANG, Sang-Tae PARK, Eun-Jung KIM, Sang-Hoon PAEK,and Sung-Yang BANG . Optical Flow Detection Using a General Noise Model .............. 951 Naoya OHTA . Uncertainty Models of the Gradient Constraint for Optical Flow Computation ..................................................... 958 Naoya OHTA . Hybrid Volume Ray Tracing of Multiple Isosurfaces with Arbitrary Opacity Values .................................................. 965 Tetu HIRAI and Tsuyoshi YAMAMOTO [Artificial Intelligence and Cognitive Science] . Repair-Based Railway Scheduling System with Cycle Detection ..... 973 Te-Wei CHIANG and Hai-Yen HAU [Bio-Cybernetics and Neurocomputing] . Self-Organization of Spatio-Temporal Visual Receptive Fields .... 980 Takashi TAKAHASHI and Yuzo HIRAI . Necessary and Sufficient Condition for Absolute Exponential Stability of Hopfield-Type Neural Networks ...................... 990 Xue-Bin LIANG and Toru YAMAGUCHI LETTERS ======= [Algorithm and Computational Complexity] . An O (E) Hypercube Recognition Algorithm .................... 994 Won-Ho CHUNG, Cheol-Hoon LEE, and Doohun EUM [Image Processing, Computer Graphics and Pattern Recognition] . Feature Detection of Moving Images Using a Hierarchical Relaxation Method .......................................................... 997 Dingding CHANG and Shuji HASHIMOTO . Image Restoration by Spatial Clustering ........................ 1000 Hiroto SHINGAI, Hiroyuki MATSUNAGA, and Kiichi URAHAMA [Bio-Cybernetics and Neurocomputing] . A Remark on a Class of Stability Conditions for Neural Networks 1004 Xue-Bin LIANG and Toru YAMAGUCHI . ABSTRACTS (IEICE Trans., Vol.J79-D-I, J79-D-II, No.7 in Japanese) ....................................................... 1006