Soosan Int Co., Ltd.

University-Industry Cooperation Group of Kyung Hee University

Penta Security Systems Inc.

Min Woo Nam

Kyoung Tae Kang

Kyoung Pil Kong

Seok Lee

Duk Soo Kim

Sang Gyoo Sim

Yong Hwan Lee

Doo Hyun Ko

Jae Yeon Yoon

Min Jeong Cha

Jun Young Song

Kwon Koo Kwak

Sun Min Jeon

Provided are a device and method for sharing big data using a blockchain. The method of sharing big data using a blockchain includes receiving a search condition from a user terminal, searching a blockchain network for metadata meeting the received search condition and acquiring found metadata, acquiring shared data stored in a distributed storage using the acquired metadata, and transmitting the acquired shared data to the user terminal.

Method and apparatus for sharing big data using block chain

Disclosed herein are an at least quaternary composition that comprises at least two donor components and at least two low-molecular-weight fullerene acceptor components and is able to allow for superior photovoltaic performance over a long period of time, and an organic solve cell comprising an active layer formed thereof.

Long-term efficient composition for active layer and organic solar cell including the same

Provided are a sharing terminal management method and a sharing terminal management apparatus. In response to an Internet access request packet, a sharing terminal management server collects terminal environment information and stores as many pieces of terminal environment information as the number of terminals permitted for each line in a permitted list via a process of transmitting a response packet for the Internet access request packet, and determines whether to transmit an Internet blocking notification, based on whether newly collected terminal environment information exists in the permitted list.

Method for managing shared terminal and device therefor

Provided are a terminal identification method and an apparatus therefore. A terminal identification apparatus obtains pixel data for a certain region of a screen displayed on the terminal, generates mapping codes for the pixel data, and then identifies the number of mapping codes for each public IP address or for each user identification information that is different from one another.

Terminal identification method and apparatus therefor

Growing community of inventors

Seoul, South Korea

Min Woo Nam