Abstract: The present disclosure relates to an organic electroluminescent compound and an organic electroluminescent device comprising the same. By comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having improved driving voltage, power efficiency, and/or lifetime properties compared to the conventional organic electroluminescent devices.

Abstract: A method of determining a location of a mobile communication terminal, the method including: receiving base station identification signals from a plurality of base stations; calculating distance ratios between the plurality of base stations and the mobile communication terminal, from the received base station identification signals; generating first variables and second variables from the distance ratios; and determining the location of the mobile communication terminal from the first variables and the second variables is provided.

Abstract: There are disclosed foot measurement systems and methods to scan someone's foot from the bottom and/or oblique topside directions for generating pixel data for the foot shape, and then to calculate and obtain main foot-dimensions and other information required for last design (for example, shoes design) using the generated pixel data. The foot measurement system comprises foot data generating means for generating pixel data for foot shape and transmitting them to the exterior, the pixel data being obtained by emitting light to a foot placed on a substrate and analyzing information of the reflected light; and image treatment means for generating foot image through analyzing the pixel data transmitted from the foot data generating means with line-scan algorithm and/or stereo vision algorithm.

Abstract: There are disclosed foot measurement systems and methods to scan someone's foot from the bottom and/or oblique topside directions for generating pixel data for the foot shape, and then to calculate and obtain main foot-dimensions and other information required for last design (for example, shoes design) using the generated pixel data. The foot measurement system comprises foot data generating means for generating pixel data for foot shape and transmitting them to the exterior, the pixel data being obtained by emitting light to a foot placed on a substrate and analyzing information of the reflected light; and image treatment means for generating foot image through analyzing the pixel data transmitted from the foot data generating means with line-scan algorithm and/or stereo vision algorithm.