We attempt to recover a 2D chromaticity intrinsic variation of a single RGB image which is independent of lighting, without requiring any prior knowledge about the camera. The proposed algorithm aims to learn an invariant direction for projecting from 2D color space to the greyscale intrinsic image. We notice that along this direction, the entropy in the derived invariant image is minimized. Th...

An edge in a drawing of a graph is called even if it intersects every other edge of the graph an even number of times. Pach and Tóth proved that a graph can always be redrawn such that its even edges are not involved in any intersections. We give a new, and significantly simpler, proof of a slightly stronger statement. We show two applications of this strengthened result: an easy proof of a the...

Most dermatologists can perform cosmetic mole removals (this is not something to try at home with your trusty disposable razor). To take off an elevated mole, a dermatologist numbs the area with local anesthetic and then shaves off the raised section of the mole with a sterile scalpel. The healing process usually leaves a flat scar that's somewhat lighter than the rest of your skin. Sometimes t...

pocket infection of a cardiac device is usually treated by removing the device and re - implanting it in a new site after complete treatment of the infection. this report illustrates a complicated case of pocket infection in the wake of the implantation of a permanent pacemaker (cardiac resynchronization therapy). the patient was treated conservatively through daily irrigation and dressing, bro...

The paper summarises activities within a broad-based research program for the reconstruction of the evolution of Italian climate in the twentieth century. The main result of the program is that Italian climate is becoming warmer and drier with an increase of both heavy precipitation events and long dry spells. Most of the observed signals appear to be due to changes in atmospheric circulation c...

Calibration procedures are described for use with electronic x-ray detectors, with an emphasis on detectors based on fiber-optically coupled charge-coupled devices. Methods are detailed for removing spurious events, pixel pedestals, dark-current, spatial distortion, and intensity response variations for both small-angle and wide-angle applications. The accuracy of the calibration procedures is ...

Logic based systems typically use a collection of Condition -> Action rules to encode the behaviour and response of the system to a specific set of events. These systems function by having a working memory of facts. By adding, removing or changing facts in the working memory, the rules system can see which (if any) rules need triggering. If the effect of a rule changes a state in the working me...

Uncertainty is perceived as the means of removing the obstacles to growth through the activation of Knightian entrepreneurship. A dynamic stochastic model of continuous-time growth is proposed and empirically tested, including equilibrating and creative entrepreneurial activity. We find that uncertainty affects economic growth and the rate of return, and causes structural changes in portfolio s...