objectives: the attentional control scale is a self- report questionnaire that assesses individual differences in attentional control. despite its extensive use, the psychometric properties of the persian version of the acs are not well understood. thus, the present study aimed at investigating the psychometric properties of the attentional control scale and its relationship with symptoms of an...

This paper proposes a histogram shifting method for image lossless data hiding in integer wavelet transform domain. This algorithm hides data into wavelet coefficients of high frequency subbands. It shifts a part of the histogram of high frequency wavelet subbands and thus embeds data by using the created histogram zero-point. This shifting process may be sequentially carried out if necessary. ...

An on-axis, vibration insensitive, polarization Fizeau interferometer is realized through the use of a pixelated polarization mask spatial carrier phase shifting technique in conjunction with a high coherence source and a polarization frequency shift device. In this arrangement, differential motion between the test and reference surfaces, in conjunction with the polarization frequency shift dev...

A considerable percentage of listeners with severe hearing loss have audiograms where the losses are high for high frequencies and low for low frequencies. For these patients, lowering the speech spectrum to the frequencies where there is some residual hearing could be a good solution to be implemented for digital hearing aids. In this paper we have presented two different frequency–lowering al...

This paper proposes a novel phase-shifting method for fast, accurate, and unambiguous 3D shape measurement. The basic idea is embedding a speckle-like signal in three sinusoidal fringe patterns to eliminate the phase ambiguity, but without reducing the fringe amplitude or frequency. The absolute depth is then recovered through a robust region-wise voting strategy relying on the embedded signal....

This paper deals with the theoretical investigation on a reduced sized Frequency Selective Surface (FSS). The FSS is designed by cutting a unique shaped slot into square patch. It has been shown, how the variation of the dimension of the slot and periodicity results in shifting of resonant frequency . Compared to conventional square patch FSS the designed FSS can provide reduction in resonant f...

A Bommel-Dransfeld technique is used to analyse the frequency spectrum in GaAs acousto­ electric domains up to 8 GHz. Parametric frequency conversion is found to be only dominant at the very onset of domain formation. In the strongly nonlinear regime, the amplified noise is mainly concentrated around the shifting frequency of maximum nonlinear gain. The shift of the maximum gain frequency is ge...

In Lab 5, you examined the behavior of several different filters. Some of the filters were “smoothing filters” that averaged the signal over many samples. Others were “sharpening” filters that accentuated transitions and edges. While it is very useful to understand the effects of these filters in the time-domain or (for images) the spatial-domain, it is often not easy to quantify these effects,...

The design and application of level shifter circuit which is based on single power supply is presented in this paper different from conventional level shifter circuitry. A level shifter may be used to shift any voltage level to a desired level without any leakage current. To reduce the supply routing and layout congestion within the chip whenever level shifting is needed for different voltage i...

An advanced phase vocoder technique for high quality audio pitch shifting and time stretching is described. Its main concept is based on the PVSOLA time stretching algorithm which is already known to give good results on monophonic speech. Some enhancements are proposed to add the ability to process polyphonic material at equal quality by distinguishing between sinusoidal and noisy frequency co...