Abstract: Disclosed herein is an asymmetric rolling joint device of a surgical instrument which increases traction force by asymmetrically forming rolling contact surfaces of joint links facing each other. The asymmetric rolling joint device includes: a first joint link part which forms a joint of the surgical instrument; and a second joint link part coming into rolling contact with the first joint link part, wherein rolling contact surfaces where the first joint link part and the second joint link part come into rolling contact with each other are formed asymmetrically so as to increase traction force more than rolling contact surfaces which are formed symmetrically.

Abstract: A method for estimating a location of a mobile device located in means of transportation is provided.

Abstract: A USB compatible apparatus for connecting an optical universal serial bus (USB) (or an optical serial bus; OSB) device and an electrical USB device, and a structure of the apparatus are provided. More particularly, a USB compatible apparatus for guaranteeing a connection between an optical USB device for inputting/outputting an optical signal and an electrical USB device for inputting/outputting an electrical signal, for example, signal transmission and reception between an electrical USB device (e.g., an electrical USB memory) and an optical USB device (e.g., a computer) having an optical USB port, and a structure of the USB compatible apparatus (a first exemplary embodiment), and a USB compatible apparatus for guaranteeing signal transmission and reception between an optical USB device (e.g., an optical USB memory) and an electrical USB device (e.g., a portable telephone) having an electrical USB port, and a structure of the USB compatible apparatus (a second exemplary embodiment) are provided.

Abstract: A method for estimating a location of a mobile device located in means of transportation is provided.

Abstract: The present invention features an impact signal processor. In preferred aspects, the impact signal processor comprises a first speed signal detection unit detecting a first speed signal of a vehicle using acceleration sensor data provided from an ACU (Airbag Control Unit) sensor, a second speed signal detection unit detecting a second speed signal of the vehicle using acceleration sensor data provided from a FIS (Front Impact Sensor) sensor, a phase lead unit, and a front impact speed estimation unit.

Abstract: The present invention features in preferred aspects a method of fabricating nano composite powder consisting of carbon nanotubes and metal matrix powder is disclosed. The method includes a low-speed milling process of milling and mixing the carbon nanotubes and the metal matrix powder, and a high-speed milling process of milling the carbon nanotubes and the metal matrix powder which are homogenously mixed in the low-speed milling process to homogenously disperse the carbon nanotubes in the metal matrix powder. In certain preferred aspects, the method can prevent damage of the carbon nanotube and can homogenously disperse the carbon nanotubes in the metal matrix.

Abstract: The present invention relates to a method for preparing pregabalin ((S)-3-(aminomethyl)-5-methylhexanoic acid which is useful for the prevention and treatment of seizure disorders, pins, and psychiatric disorders. According to the present invention, pregabalin can be prepared in a high enantiomeric excess of 99% or more, without an additional step of separating or purifying its enantiomer.

Abstract: The present invention, in preferred aspects, provides a communication method using a network coding packet in a wireless network, with reduced occurrence of negative acknowledgements, between a access point and plural mobile terminals.