Earticle

USN 기술은 센서노드의 전류소모 감소를 위한 저전력 기술개발과 관련 기술력 확보를 위해 많은 연구가 진행되고 있다. 유비쿼터스 환경에서 보안의 취약성과 낮은 신뢰성 문제는 USN 기술의 상용화 성공을 위해 선행되어야할 요소이다. 본 연구에서는 보안 문제로 W-Key 알고리즘을 도입하여 키 분배관리, 인증관리, 환경관리로 구성하여 무선 Key기법과 다른 RFID/USN기반의 안전한 출입통제 시스템을 구현하였다.

USN technology to reduce current consumption of sensor nodes, low-power technology development and related technologies to ensure the sub-branch has been a lot of researched. Security vulnerabilities in ubiquitous computing environment problems and low reliability of USN technology commercialization have to be preceded. In this paper, as security concerns by introducing W-Key algorithms key-distribution management, authentication management, environmental management consists of the Wireless-Key techniques and other implementation of a secure access control system based on RFID/USN.

Purpose: This study is aims to analyze relationships among population, resident income, fiscal characteristics, and operating expenses in Korean local governments through investigating factors that affect operating expenses for managing local governments. Design/methodology/approach: To examine the factors affecting operating expenses, this study utilizes research framework using key determinants of budget execution in terms of operating expenses with the political market approach. For doing so, this study conducts panel regression analysis using 226 Korean local governments' empirical data during FY2016-FY2020. Findings: Analytical results show that population and fiscal factors of local governments do not explain a size of operating expenses; moreover, it reveals that local governments with a small population and fiscal size tend to spend more operating expenses. Research limitations/implications: Tis study is initiated based on the hypothesis that decrease of population would lead to decline demands for public goods and public services, which reduce the number of public goods and public services, and it would finally cause the reduction of local governments' operating expenses. However, this study has a limitation regarding to restricting the period of data since FY2016. Originality/value: Despite the above limitation, this study reveals that population variables and fiscal variables do not explain a size of operating expenses of Korean local governments. Rather, the analytical result shows that local governments with a small population and fiscal size spend more operating expenses. Therefore, this study suggests that it pays more attention to improving efficiency of organizational operation of local governments in the future.

위치기반서비스(Location Based Service)는 이동중인 사용자의 위치 정보를 타 정보와 결합해 사용자가 요청, 혹은 필요로 하는 부가적인 응용 서비스를 제공하기 위한 기술을 말한다. 현재의 개인 위주의 서비스에서 국가 전반적인 인프라 차원으로 급속히 확대 발전함에 따라 사용자의 프라이버시(Privacy) 문제나 접근제어와 같은 인증문제가 중요한 이슈로 대두되고 있다. 본 논문에서는 LBS 기업체 동향 및 전반적인 사항을 분석하여 문제점을 도출하고 LBS 프라이버시(Privacy) 보호를 위한 접근제어 문제, 인증 문제 및 키 신규성 확인 기능을 제공하는 타원곡선 기반의 인증 및 키 교환 프로토콜 기술을 제시한다.