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This paper estimates the effect of income on individual self-reported happiness using unique Chinese twins data. We address three… Expand The challenge of steganographic methods is to create a rational balance between the quality of the file and the size of data that… Expand A multi-scale triangular mapping and its inverse mapping are presented. Combined with an mton mapping, scrambling method based on… Expand A closed knight's tour of a chessboard uses legal moves of the knight to visit every square exactly once and return to its… Expand This paper presents three heuristic functions that aim to reduce the search cost for the knight tour problem. The first heuristic… Expand Abstract The present paper outlines the philosophical background as well as a practical case of so-called decentralized… Expand Three experimental studies were conducted to examine two alternative explanations for the widely established positive eAect of… Expand Knight’s tours are a fascinating subject. New lower bounds on the number of knight’s tours and structured knight’s tours on n x… Expand A knight’s tour is a series of moves made by a knight visiting every square of an n x n chessboard exactly once. The knight’s… Expand Abstract Observations during the laying period and after hatching showed that nest defence by merlins varied from fierce attacks… Expand