A comparison was firstly done of the oxygen flux through the Bausch and Lomb Plano T lens, the Bausch & Lomb U3 lens, and the Duragel 75 lens with a sensor on the normal eye. The results showed that the Bausch and Lomb Plano T lens was the best for use with the sensor probe. The sensor was then used to obtain a comparison with the normal oxygen flux through a therapeutic lens on keratoplastic e...

IN this outstanding 2"x2" Slide Projector, Bausch & Lomb has utilized the experience gained in manufacturing motion picture optical systems to give the user screen images of professional quality from black and white or color slides. Despite the exceptional brilliance of the screen images, slide temperature is kept within safe limits for all normal projection. The Bausch & Lomb 2"x2" Slide Proje...

Using methods introduced by Scargle we derive a cumulative version of the Lomb periodogram that exhibits frequency independent statistics when applied to cumulative noise. We show how this cumulative Lomb periodogram allows us to estimate the significance of log-periodic signatures in the S&P 500 anti-bubble that started in August 2000.

Satish G. Kandlikar Fellow ASME Thermal Analysis, Microfluidics, and Fuel Cell Laboratory, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, NY 14623; Mechanical Engineering Department, Rochester Institute of Technology, 76 Lomb Memorial Drive, Rochester, NY 14623 e-mail: [email protected] A Theoretical Model for Axial Heat Conduction Effects During Single-Phase Flow in Microch...

We estimate the probability that random noise, of several plausible standard distributions, creates a false alarm that a periodicity (or log-periodicity) is found in a time series. The solution of this problem is already known for independent Gaussian distributed noise. We investigate more general situations with non-Gaussian correlated noises and present synthetic tests on the detectability an...

The classical power spectrum, computed in the frequency domain, outranks traditionally used periodograms derived in the time domain (such as the chi2 periodogram) regarding the search for biological rhythms. Unfortunately, classical power spectral analysis is not possible with unequally spaced data (e.g., time series with missing data). The Lomb-Scargle periodogram fixes this shortcoming. Howev...

The RR interval series is non-stationary and unevenly spaced in time. For estimating its power spectral density (PSD) using traditional techniques like FFT, require resampling at uniform intervals. The researchers have used different interpolation techniques as resampling methods. All these resampling methods introduce the low pass filtering effect in the power spectrum. The lomb transform is a...

Heart rate variability (HRV) is frequently used to measure autonomic nervous system (ANS) activity. However, little is known about the mechanism underlying pharmacologically induced changes in HRV. Previous research has shown that nicotine exposure stimulates the ANS, mediating a wide spectrum of physiological and behavioral effects, including altered respiratory sinus arrhythmia and enhanced a...

The Lomb-Scargle periodogram approach was applied to the search for periodically expressed genes in a Plasmodium falciparum dataset. The Lomb-Scargle algorithm has several computational advantages over more common approaches, such as Fourier analysis, including direct treatment of missing values and and a periodogram that has known statistical properties. Hierarchical clustering of periodograms...