We have tried and developed a whiteboard-type message board on the network and developed a message board system on WWW for asynchronous communication, which provides users with simple tools for drawing. On this board, any message can be written by hand, making use of mouse and tablets. Letters are coded as a collection of lines. We call this type of system an "on-door" communication system, and...

PERSONNEL HAZARDS FROM MEDICAL ELECTRON ACCELERATOR PHOTONEUTRONS" R. C. McCall, T. M. Jenkins, R. A. Shore and P. D. LaRiviere+ Stanford Linear Accelerator Center, CA, U.S.A. and Varian Associates? INTRODUCTION For medical accelerators, neutron penetration through the room entry door is the major personnel hazard. Most therapy accelerator rooms are designed with at least a rudimentary maze to ...

A study was undertaken to examine the effect of lining high-energy linear accelerator mazes with neutron-moderating materials in order to reduce scattered neutron dose at the accelerator room door. Polyethylene alone reduced neutron dose by no more than 27% and did not significantly reduce gamma ray dose. Polyethylene combined with flexboron panels reduced neutron dose by 50% at most, reducing ...

The scene is a large room. There are two laptop computers and a printer on a table between piles of printouts of lists and photocopies of maps downloaded from "Yahoo". Two cell phones can also be seen. The two computer screens have an Access file open with names, addresses, more names and credits and debits in English. Three men sit at the table; two of them are unshaven and blurry-eyed as if t...

popular culture of the 1990s came, of course, from television: Jerry Seinfeld’s apartment door bursting open, with Kramer grasping the doorknob and sliding into the room as if the door were dragging him by its own sheer will. A manic force was thrust, as if from some other cosmic sphere, into the relatively calm, if absurd, world of Jerry Seinfeld. This is a comic rhythm we know well from more ...

In previous research 2-year-olds have failed to show knowledge of solidity in a search task in which a ball rolled behind a screen and was stopped by a barrier. The screen had four doors and the barrier was visible above the door hiding the ball. To establish what cues 2-year-olds might be using, precise point-of-gaze measures were taken during the hiding event. A transparent screen with opaque...

There is a story about Queen Victoria and Prince Albert, which, although charming, has not been verified as historical fact (Strachey, 1921). Whether true or not, the story illustrates the use of differential reinforcement. As the story goes, shortly after their marriage, Prince Albert and Queen Victoria had a quarrel. Albert walked (or stomped, depending on the telling) out of the room and loc...

I if When I visited the hospital I knew that the birth had taken place about a week before, so I went prepared to see an almost completely recovered young mother, to admire the baby and chat hilariously about the shocks and indignities of the labour ward. It was normal visiting hours so it did not occur to me to ask a nurse if I could see her. Knowing the number of her room, I went straight up ...

Government by Baboo (now Raja) Bishn Prakash Narain Sing, to be used as the charitable dispensary at Fyzabad. It was impossible to obtain a good position for taking the photograph, but still the picture shews the building to be a very handsome one. We are indebted for the design to Lieut. Pierson, of the Itoyal Engineers. The hospital, which CDSt about Rs. 40,000, was finished in March, 1864. B...