In this paper, we describe a comparison of two spatial discretization schemes for the advection equation, namely the first finite difference method and the method of lines. The stability of the methods has been studied by Von Neumann method and with the matrix analysis. The methods are applied to a number of test problems to compare the accuracy and computational efficiency. We show that both d...

This paper presents a dichotic listening experiment on the perception of Mandarin tones under clean and noisy conditions. We examine the enhancing role of noise on the lateralization patterns of tones. We discover that the lateralization patterns of different tones are inconsistent: the perception of tone 1 exhibits a left ear advantage, while that of tone 2 or tone 4 has a right ear advantage....

The ability to detect a dynamic change in the interaural delay of a pure tone in the presence of a distracter tone of a different frequency was investigated in four conditions: (1) a control condition in which no distracter tone was present, (2) the distracter tone was stationary (fixed interaural delay), (3) the distracter had an interaural delay that changed in the same direction as that of t...

In Standard Chinese, a low tone (Tone3) is often realized with a rising F0 contour before another low tone; this tone change is known as the 3 tone sandhi. This study investigated the acoustic characteristics of the 3 tone sandhi in Standard Chinese in telephone conversations and broadcast news speech. The sandhi rising tone was found to be different from the lexical rising tone (Tone2) in disy...

Cochlear blood flow regulation is important to prevent hearing loss caused by ischemia and oxidative stress. Cochlear blood supply is provided by the spiral modiolar artery (SMA). The myogenic tone of the SMA is enhanced by the nitric oxide synthase (NOS) blocker L-N(G)-nitro-arginine (LNNA) in males, but not in females. Here, we investigated whether this gender difference is based on differenc...

There is a strong research interest in identifying the surface roughness of the carotid arterial inner wall via texture analysis for early diagnosis of atherosclerosis. The purpose of this study is to assess the efficacy of texture analysis methods for identifying arterial roughness in the early stage of atherosclerosis. Ultrasound images of common carotid arteries of 15 normal mice fed a norma...

This paper presents an empirical study of texture analysis for feature extraction and classification of high spatial resolution remotely sensed imagery (10 meters) in terms of specific land cover types. Little is known as to which texture features are important for separating specific land covers with a per-pixel classifier. The principal method examined is the use of spatial gray tone dependen...

Previous animal research has traditionally used arbitrary stimuli to investigate timing in a temporal bisection procedure. The current study compared the timing of the duration of an arbitrary, auditory stimulus (a 500-Hz tone) to the timing of the duration of a naturalistic, auditory stimulus (a pigeon cooing). In the first phase of this study, temporal perception was assessed by comparing psy...