Abstract: The present invention relates to a system for predicting gestational diabetes mellitus (GDM) of pregnant individuals, wherein the system comprises an operation module, and the operation model comprises a support vector regression model, and the system is used to predict the plasma glucose levels at 1 hour and/or 2 hours of oral glucose tolerance test (OGTT) by using a support vector regression developed prediction model generated by substituting the concentration of the biomarkers in fasting blood samples of pregnant individuals. The present invention provides biomarkers and biomarker-based diagnostic models for differential diagnosis of gestational diabetes mellitus (GDM), which can be applied to diagnosis or prediction of GDM in early stage and are of great significance to the prevention or treatment of GDM.

Abstract: A speaker system for use in an automobile vehicle, comprises: a pair of high frequency speakers disposed at opposite ends in a lateral direction of a front section within the vehicle; a pair of low/middle frequency speakers disposed at opposite ends in a lateral direction of the front section, a whole frequency speaker located in the center of the front section. Each of the high frequency speakers is a horn speaker made from a part of a windshield, a part of a side glass and a part of an upper surface of a dashboard in the vehicle.

Abstract: A plurality of speakers are arranged in line, and a plurality of digital filters are provided for the speakers. Each of the digital filters is applied with a plurality of audio signals. Characteristics of each digital filter is adjusted so as to provide patterns of directivity to each speaker dependent on the input audio signals.