This paper introduces a new importance sampling technique to increase the efficiency of rare event simulation. By using a multidimensional rotational invariant auxiliary density, this method can be applied to estimate risk measures for credit risk portfolios where the method of importance sampling via mean shifting is not suitable. The loss distribution of the portfolio is obtained by simulatin...

In vivo quantitative assessment of skin lesions is an important step in the evaluation of skin condition. An objective measurement device can help as a valuable tool for skin analysis. We propose an explorative new multispectral camera specifically developed for dermatology/cosmetology applications. The multispectral imaging system provides images of skin reflectance at different wavebands cove...

The Discrete Wavelet Transform has emerged as an elegant tool for data analysis queries. It was not until the time we proposed a new wavelet technique, ProPolyne, for fast exact, approximate, or progressive polynomial aggregate query processing that data did not have to be compressed, unlike most of the prior studies in this area. In this paper, after reviewing our ProPolyne technique in more d...

OBJECTIVE To compare the ease of insertion between rotational laryngeal mask airway (LMA) insertion and Brain's LMA insertion technique in terms of number of LMA insertion attempts, time duration of LMA insertion and complications: trauma, laryngospasm, and hypoxaemia. STUDY DESIGN Randomized control study. PLACE AND DURATION OF STUDY The Aga Khan University Hospital, Karachi, from Septembe...

We introduce chiral rotational spectroscopy, a technique that enables the determination of the orientated optical activity pseudotensor components BXX , BYY , and BZZ of chiral molecules, in a manner that reveals the enantiomeric constitution of a sample and provides an incisive signal even for a racemate. Chiral rotational spectroscopy could find particular use in the analysis of molecules tha...

Different rotational CARS techniques have been evaluated in terms of single-shot temperature accuracy and signal intensity in room temperature nitrogen and in flames. The different techniques include both dual broadband techniques, using one or two broadband dye lasers, and conventional rotational CARS with different dye lasers. These techniques are also compared with vibrational CARS concernin...