This paper describes the Lyapunov-based force control suppressing the coupled bending and torsional vibrations of a one-link flexible arm with a rigid tip body. On the basis of the distributed parameter model, the output feedback control law is constructed using Lyapunov method, and the asymptotic stability of the closedloop system is proved. The proposed controller consists of the PD feedback ...

Foraging is a rapid, side-to-side movement of the nose generated by Caenorhabditis elegans as it explores its environment. In this paper, we present an automated method to detect and analyze foraging behavior of C. elegans in a video sequence. Several morphological image-processing methods are used to locate the precise nose position of the worm in each image. Then foraging events are detected ...

Crystals bent to logarithmic spirals have been used in applications where large acceptance of divergent x-rays from a small source is needed [1]. Small acceptances can be easily handled with cylindrically bent crystal. In cases where larger acceptances are needed differential bending may be adequate [2]. However, the largest acceptance is obtained from a flat crystal plate when bent into the lo...

The beamline BL43IR at SPring-8 has been constructed as a beamline exclusively dedicated to the infrared spectroscopy. The beamline was designed to make use of infrared synchrotron radiation emitted from a bending magnet of 39.3m bending radius with the acceptance angle of 36.5(H) 12.6(V)mrad and to cover a very wide wavelength range from 500 nm (20,000 cm , 2.5 eV) to 100mm (100 cm , 12.5meV)....

We present a combined quantum mechanics and molecular mechanics study of the deep ultraviolet ππ* resonance Raman spectra of β-sheet amyloid fibrils Aβ(34-42) and Aβ(1-40). Effects of conformational fluctuations are described using a Ramachandran angle map, thus avoiding repeated ab initio calculations. Experimentally observed effects of hydrogen-deuterium exchange are reproduced. We propose th...