GIMP

Reading: Gimp
Full spelling: GNU Image Manipulation PROGRAM
Field:
OS > UNIX > GIMP

The image processing software which is used widely with the UNIX affiliation OS. The free software it is said that it has colorful function, is not inferior to the photo retouch software of commercial business. Originally, in the one for UNIX affiliation OS it was developed, but it is transplanted even to other OS such as Windows. Those which collected the program part of the various graphic relationships which are used with GIMP as one library GTK (GIMP Tool Kit) with, calling the function of GIMP from the other program, it can use.

GIMPS

Reading: [jinpusu]
Full spelling: Great Internet Mersenne Prime Search
Field:
IT and society > supercomputer/grid > GIMPS

The distributed computing project which was started in 1996, discovers enormous prime. With the project which discovers enormous ones of the Mersenne prime which is displayed with type “of X power - 1 of 2”, being free, several tens of thousands of volunteers of the entire world the hand doing to divide making use of the client software which can insert in the hand you search prime. 43 there is a Mersenne prime which presently is informed, it is the discovery nine among these by GIMPS. Though as for any big things “the 43rd Mersenne prime 2 which is discovered on 2005 December 15th 30,402,457 powers - 1”

GIPS

Reading: [jipusu]
Full spelling: Giga Instructions Per Second
Field:
Microprocessor > performance evaluation > GIPS

The unit which displays the operation time of the computer and the especially microprocessor.

With 1GIPS=1000MIPS, the computer of 1GIPS can process the order of 1,000,000,000 time in 1 seconds. GIPS value is reflects the efficiency of the computer, but efficiency other than the part where the microprocessor processes the data is not expressed to GIPS value. Because of this, the case where actual computer efficiency is measured it can use more complicated benchmark.

GIS <Geographical information system>

Reading: Gee eye s
Full spelling: Geographical Information System
Field:
IT and society > GPS/GIS > GIS

The information system which handles with the data which it is related to the position of the map (topography) data and the statistical data and position has the attribute information etc which are digitalized, integrated.

It is constituted from the database which correlates the map data and the other data mutually and the software which does the search and analysis and indication etc of those items of information. Because the data is indicated on the map, it is possible to grasp the distribution and density and arrangement etc of the analytical object visual.

At enterprise and the like, it is applied to area marketing such as commercial sphere analysis and new customer development to the map data combining population distribution and the arrangement etc of the store. Also the car navigation system which combines data and GPS (all the terrestrial determination systems) regarding the road and the building is one of the applied examples of GIS.

GI type optical fiber <Gray dead index type optical fiber>

Alias:
graded-index optical fiber
Field:
Network technology > optical communication > GI type optical fiber

In one kind of optical fiber, those which use the material where refractive index of light from the medial axis changes continually in concentric circular condition. There is many a thing which is used as the multi-mode optic fiber.

It is designed to be the kind of structure where with the form which is used widely generally, refractive index inside the core which transmits light goes to outside from the center of the fiber and following continually becomes low. As for light while repeating reflection inside the fiber, in order to advance, when simultaneously incidence angle differs even in the light which incidence it does, route differs, the difference occurs in propagation velocity. As for gray dead index type because change of the propagation velocity with this incidence angle can be held down to smallest, it faces to the transmission of long distance wide band. However, because production cost is attached high in comparison with the step index type optical fiber and the like whose structure is simple, it is utilized mainly with backbone network and the like of the common carrier.