Jonathan Wonner

Learn More
We present the SPEED method to predict endpoints, based on analysis of the kinetic characteristics of the pointing gesture. Our model splits the gesture into an acceleration phase and a deceleration phase to precisely detect target. The first phase allows us to identify a velocity peak that marks the beginning of the second phase. This phase is approached(More)
We present Starfish - a new target selection technique for virtual reality (VR) environments. This technique provides a solution to accurately select targets in high-density 3D scenes. The user controls a 3D pointer surrounded by a starfish-shaped closed surface. The extremity of each branch ends exactly on preselected near targets. The shape is an implicit(More)
A collation of 64 colonoscopic examinations performed on 41 patients operated on for cancer of the colon or rectum is reported. Eleven patients (26.8 percent) had positive follow-up endoscopic findings. In 13 enumerated tumoral proliferations. 8 benign polyps and 5 malignant growths were found, one of the latter on the anastomosis, and the other 4 on the(More)
We present Bubble Bee - an extension for the 3D bubble cursor in Virtual Environments (VEs). This technique provides an alternative to arrows for pointing out a direction in a 3D scene. Bubble Bee is based on a ring concept. A circular ring in 3D appears like an ellipse, according to its orientation. This orientation is easy to infer by comparing the minor(More)
alpha-Chymotrypsin exhibits photoswitchable activities in an organic solvent after covalent modification of the protein backbone with thiophenefulgide active ester (2). The thiophenefulgide-modified alpha-chymotrypsin exhibits reversible photoisomerizable properties between states (3)-E and (3)-C. The modified alpha-chymotrypsin, where nine lysine residues(More)
  • 1