Research on Vehicle Positioning Method Based on Underground Garages

With the continuous development of urbanization, the number of vehicles has increased year by year. In order to solve the hard-to-park problem, underground garages have been built on a large scale in many cities. However, due to the fact that GPS signals are kept out in the underground garage, GPS technology does not work. As a consequence, drivers cannot use navigation equipment to search for the parking space. In view of this, vehicle positioning technique for vehicles in underground garages has hold the public attention and relevant research has been done. In this paper, we propose an efficient method of accurate vehicle positioning. First, use the low-power Bluetooth device, then use Gaussian filter to optimize the RSSI ranging algorithm, and then use the maximum likelihood method to improve the three-loop positioning algorithm. Finally, a comparison is made between the algorithm and the traditional algorithm. A large number of experiments have proved that this method can be used to determine the positions of vehicles in underground garages.

Personality, Drinking Patterns, and Problem Drinking among Young Adult Offenders

Three matched groups (n = 27) of young adult alcohol offenders, non-alcohol offenders and controls were compared on mental health, use of alcohol, and problem drinking. Ss of the non-alcohol and control groups were matched with alcohol offenders on race, sex, age, education, social status, and religion. All Ss received the MMPI, the Barron Ego Strength Scale (Es), an alcohol frequency/quantity questionnaire and the Park Problem Drinking Scale. Alcohol offenders showed less mental health, lower Es, excessive drinking, and greater problem drinking behavior than controls. Alcohol and non-alcohol offenders were similar in mental health and Es, but the former group drank significantly more alcohol and showed more problem drinking behavior. Implications suggest that excessive drinking may be learned and maintained by psychological, physiological, and/or sociological reinforcement(s).