{'fraction_non_alphanumeric': 0.02346805736636245, 'fraction_numerical': 0.0, 'mean_word_length': 5.0, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
A study on human navigator's mental workload with heart rate variability

A navigator efforts to handle the ship for safe navigation by judging navigational information, and he/she has the responsibility of human lives and economical values under the judgment. So, a navigator keeps the mental workload in navigational watch keeping. The purpose of this paper is to find characteristics of navigator's mental workload with heart rate variability (R-R interval). The analysis of the characteristics is important for the development of navigational system and the research on the art ("SEI) of ship's navigator. The experiment carries out for six kinds of sea area in Japan, and the subject is chief officer of our training ship in Kobe University of Mercantile Marine.