This paper describes the Magic Pen, a modified pen that allows natural cable-less interaction with AR environments. The pen is a normal pen with bright Light Emitting Diodes (LEDs) mounted at each end. Using computer vision techniques, these LEDs are tracked in the image captured by a head-mounted camera, and the pen’s position and orientation are computed. This permits the use of image plane i...

Pen Computers: Dream and Reality \Pen computers" [4] oer an interesting alternative to paper. One can write directly on a LDC (Liquid Crystal Display) screen with a stylus or \pen". The screen has an invisible sensitive matrix which records the position of the pen on the surface. The trajectory of the pen appears almost instantaneously on the screen giving the illusion of ink (\electronic ink")...

The light-pen coordinate measuring machine (LPCMM for short) is portable and flexible to measure features including invisible ones in-situ. Since different styluses are needed to measure different features and even during the process of measuring a single workpiece with complicated configurations, to improve the system measurement accuracy it is beneficial to calibrate the stylus tip center pos...

the aim of this study was to evaluate the effects of three lighting programs on immune system and performance of broiler chickens. a total of 288 seven day-old male broiler chicks (ross-308) were randomly distributed between three treatments. each group was housed in the separated room with eight pen and 12-birds per pen. the management conditions were similar for all treatments throughout the ...

Red light cameras may have a demonstrable impact on reducing the frequency of red light running violations; however, their effect on the overall safety at intersections is still up for debate. This paper examined the safety impacts of Red Light Cameras (RLCs) on traffic crashes at signalized intersections using the Empirical Bayes (EB) method. Data were obtained from the Florida Department of T...

It has been shown that excessive white light exposure during retinal microsurgery can induce retinal damage. To address this problem, one can illuminate the retina with a device that alternates between white, and less damaging limited-spectrum light. The surgeon is then presented with a fully colored video by recoloring the limited-spectrum light frames, using information from the white-light f...

Extraordinarily simple, inexpensive and easily available kymograph ink writing pen system for physiological and pharmacological recordings has been described. The writing part of the pen, consisting of a small porous fibrous writing rod to which a small spongy absorbing cylinder (as an ink container) is added, is attached to one end of a very light plastic strip of which opposite end is connect...

The radiation hardness of a Polyethylene Naphthalate (PEN) thin film scintillator has been characterized in terms the light yield loss after irradiation with 11 MeV protons and 1 electrons. distributions induced by excitation radioactive sources have measured on samples irradiated different doses computed. Results showed good behaviors PEN scintillators, ~15% at 10 Mrad ~35% maximum delivered d...

Extended Abstract Communication involves a combination of speech and gestures, which afford joint attention between speaker and interlocutor (Tomasello, 1999, 2003; Kita, 2003). Characterizing the mapping between language and the vision and action systems is therefore essential in order to understand both normal and disordered communication. In a series of five experiments we target this mappin...

The point is that, in the theory of electromagnetism, we have to abandon the descriptio. Although today we are quite familiar with this picture, it was an important step I took the following picture from page slideplayer.com/slide/383. Now turn on the light bulb and draw the light lines coming from the filament inside. Calcium channels close and an active transport pump carries calcium back to ...