The model of space-charge formation in photorefractive polymers due to Schildkraut and Buettner has been modified to include thermally accessible deep traps as well as shallow traps. The dynamic equations have been solved semiempirically using independent measurements of photoconductive properties to predict photorefractive dynamics. Dependencies of the dynamics on charge generation, mobility, ...

The spectrum profile that emerges in molecular spectroscopy and atmospheric radiative transfer as the combined effect of Doppler and pressure broadenings is known as the Voigt profile function. Because of its convolution integral representation, the Voigt profile can be interpreted as the probability density function of the sum of two independent random variables with Gaussian density (due to t...

A current sensing device, namely Hall Effect MOSFET (HEMOS) is proposed. It is experimentally shown that the HEMOS enables a non-contacting, and non-disturbing current measurement, which can be used for IDDQ testing of internal circuit blocks. The HEMOS can be manufactured and integrated in a VLSI with the conventional CMOS process. The HEMOS is also helpful to establish the low standby current...

Poker is a challenging domain that contains both elements of chance and imperfect information. Though progress has been made in the domain, there is still one major stumbling block on the way to creating a world-class calibre computer player. This is the task of learning how an opponent plays (i.e., opponent modelling) and subsequently coming up with a counter-strategy that can exploit that inf...

We have performed a statistical analysis of a sample of 1100 extra-galactic rotation measures (RMs) obtained from the literature. Using a subsample of approximately 800 reliable RMs we compute a rotation measure sky and determine reliable large scale features for the line of sight Galactic magnetic field. We find that the influence of the Milky Way can be seen up to roughly 30◦ on either side o...

A considerable amount of research has been conducted to demonstrate the development of bioreactor landfills promoted by leachate recirculation [1-10]. The effectiveness of leachate recirculation has been well documented in lysimeter studies [1, 5, 11, 12], test cell studies [2, 13, 14-16] and full-scale studies [17-20]. However, the results from these investigations might not be applied appropr...

OBJECTIVES this study aimed to investigate the construct validity and responsiveness of performance-based and self-reported measures of strength, mobility and balance after hip fracture. DESIGN secondary analysis of clinical trial data. SUBJECTS a total of 148 older people undergoing hip fracture rehabilitation. METHODS correlation coefficients assessed construct validity. Internal respon...

To investigate formation mechanism of energy spectra, direct numerical simulations of oceanic internal waves based on a dynamic equation are performed. Our simulations demonstrate that the resulting energy spectra in inertial regions are not universal. Instead, energy accumulates in the horizontally longest waves. We provide evidence that formation of energy spectra in inertial regions is domin...

Intermediate Signed Digit (SD) representation can facilitate fast and compact VLSI implementations of partial product accumulation trees. It achieves a reduction ratio of 2:1 at every level and also leads to more regular layouts. Its disadvantage is that the number of bit lines that need to routed can be high. This can lead to a significant area overhead especially at smaller feature sizes wher...