The correction of atmospheric effects is one of the preliminary steps required to make quantitative use of time series of high resolution images from optical remote sensing satellites. An accurate atmospheric correction requires good knowledge of the aerosol optical thickness (AOT) and of the aerosol type. As a first step, this study compares the performances of two kinds of AOT estimation meth...

This article presents a study of intonation in performances of Schubert’s “Ave Maria,” both a cappella and with accompaniment, by six undergraduate and six professional singers. The analysis focuses on the tuning of melodic semitones and whole tones and explores the impact of training and musical context on intonation, as well as whether intonation is significantly affected by the presence of a...

—Recently, Small Base Stations (SBSs) are added to macro-cell layout to extend network coverage and increase system capacity. Whereas, most of the users incline to connect to Macro Base Stations (MBSs) due to their overwhelmingly higher transmit power. As a result, the imbalanced distribution of load leads to the underutilization of the resources of SBSs, which may deteriorate the network perf...

In this paper, it is proposed that to achieve higher data rates and to combat to effect of multipath propagation, orthogonal frequency division multiplexing system (OFDM) is a promising technique. OFDM allows many users to transmit in an allocated carrier. Each user is allocated several carriers in which to transmit their data.The transmission is generated in such a way that the carriers used a...

Benefiting from the high spectrum efficiency and power efficiency, 6PolSK-QPSK (6-ary polarization-shift keying quadrature phase-shift keying) is a promising modulation format in coherent optical communication. We proposed a novel structure to generate the 6PolSK-QPSK with two dual-drive MZMs. Simulation results show that the proposed structure can generate 6PolSK-QPSK effectively and the perfo...

In this paper we present a new vibrato and tremolo suppression technique for onset detection. It weights the differences of the magnitude spectrogram used for the calculation of the spectral flux onset detection function on the basis of the local group delay information. With this weighting technique applied, the onset detection function is able to reliably distinguish between genuine onsets an...

Quantitative methods to assess or predict the quality of a spectral image continue to be the subject of a number of current research activities. An accepted methodology would be highly desirable for use in data collection tasking or data archive searching in ways analogous to the current prediction of panchromatic image quality through the National Imagery Interpretation Rating Scale (NIIRS) us...

Spectral entropy, which was generated by applying the Shannon entropy concept to the power distribution of the Fourier-transformed electroencephalograph (EEG), was utilized to measure the uniformity of power spectral density underlying EEG when subjects performed the working memory tasks twice, i.e., before and after training. According to Signed Residual Time (SRT) scores based on response spe...