Abstract: Provided is a visitor identification system, including: a wireless transmitter; a visitor application; and a management server; wherein the wireless transmitter is installed by a resident and transmits a near field wireless signal; wherein the visitor application receives the near field wireless signal from the wireless transmitter, extracts a first identifier from the wireless transmitter, and transmits the first identifier to the management server, wherein the first identifier is unique to the wireless transmitter; wherein the management server receives the first identifier from the visitor application and performs one or more predetermined tasks so that a resident can verify identity of a visitor.

Abstract: Provided is a visitor identification system, including: a wireless transmitter; a visitor application; and a management server; wherein the wireless transmitter is installed by a resident and transmits a near field wireless signal; wherein the visitor application receives the near field wireless signal from the wireless transmitter, extracts a first identifier from the wireless transmitter, and transmits the first identifier to the management server, wherein the first identifier is unique to the wireless transmitter; wherein the management server receives the first identifier from the visitor application and performs one or more predetermined tasks so that a resident can verify identity of a visitor.

Abstract: The present invention relates to a composition for topically delivering SDF-1 into the brain, in which the composition comprises a dual ionic pH-sensitive copolymer and a nerve regeneration and protective factor. In the present invention, when a dual ionic pH-sensitive copolymer containing SDF-1 as a nerve regeneration and protective factor is applied to a patient suffering from ischemic stroke as a drug carrier, it induces the effective delivery of the treatment factor to a topical lesion site, and moreover, the risk factors for adverse effects may be cancelled out, so that it can be effectively used as a novel therapeutic agent for ischemic brain diseases.

Abstract: The present invention relates to a composition for topically delivering SDF-1 into the brain, in which the composition comprises a dual ionic pH-sensitive copolymer and a nerve regeneration and protective factor. In the present invention, when a dual ionic pH-sensitive copolymer containing SDF-1 as a nerve regeneration and protective factor is applied to a patient suffering from ischemic stroke as a drug carrier, it induces the effective delivery of the treatment factor to a topical lesion site, and moreover, the risk factors for adverse effects may be cancelled out, so that it can be effectively used as a novel therapeutic agent for ischemic brain diseases.

Abstract: A booting method and an apparatus thereof for debugging in a portable terminal are provided. The method includes, when a booting event occurs, stacking a boot loader in a preset boot loader region of a Random Access Memory (RAM), and executing, and stacking an Operating System (OS) in a preset OS region of the RAM, wherein the boot loader region and the OS region of the RAM are set such that they do not overlap each other.

Abstract: A booting method and an apparatus thereof for debugging in a portable terminal are provided. The method includes, when a booting event occurs; stacking a boot loader in a preset boot loader region of a Random Access Memory (RAM), and executing, and stacking an Operating System (OS) in a preset OS region of the RAM, wherein the boot loader region and the OS region of the RAM are set such that they do not overlap each other.