• 전기저널
• /
• 통권440호
• /
• pp.45-51
• /
• 2013

• 전기학회논문지
• /
• 제63권2호
• /
• pp.217-223
• /
• 2014

Recently, various researches and projects about electric vehicles are in progress vigorously and continuously and it is expected to penetrate rapidly with the next a few years. This deployment will cause the change of load composition rate affecting on power system planning and operations. Therefore, a new load model should be developed integrating with electric vehicle loads. In this paper, the load composition rate of residential sectors is analyzed considering the deployment of this mobility load such as electric vehicles and a new diffusion model is proposed based on the classification of the replacement patterns. Additionally, electric vehicle charging loads are basically modeled by some individual load experiments to develop new load models for smart place and some new conceptual power systems such as micro grids.

• 신재생에너지
• /
• 제10권3호
• /
• pp.22-30
• /
• 2014

The isolated self-generating electricity with diesel engine generator has been used in islands far away from main land. It costs high because of increasing oil price, and unsafe to have supplying oil and its related components by ship due to unexpectable marine conditions. Therefore there is the need for the hybrid system of renewable energy like wind or solar energy systems with oil engine generator, which can reduce oil use and extend oil supplying period. In this study, the feasibility of such hybrid system with smart micro grid on the eight islands of Jeon-nam province is surveyed to find good place for the demonstration test of the hybrid system. In each island, 3 wind turbine systems of 10 kW and photovoltaic of 20 kW are tested with already installed diesel engine. The performance and costs of the hybrid system in each island are compared in the given conditions of solar and wind energy potential. As a result of the study, Jung-ma island is recommended for the optimum place to make real field demonstration test of isolated hybrid generating and smart grid systems.

• Journal of Information Technology Applications and Management
• /
• 제20권4호
• /
• pp.249-261
• /
• 2013

Through smart work using by smart technologies, many organizations wish to change traditional working styles. Lots of organizations, however, wish to do work with smartness through adoption of smart work technologies, those are not sure whether smart work will be successful or not till now. Viewpoints of members concerning efficiency and effectiveness from smart work who operate the organizations may be different. Therefore, hopefully, this research tried to investigate whether differences among members of organizations by empirical and exploratory approach. Totally, 118 questionnaires had been collected and performed test of mean difference between groups. As a result, some items such as working place, working methods, flexible time and tension of smartwork showed significant differences among groups and non-leader and leader groups. And, furthermore, from this research I believe that we can have a few insights for successful smart working environment in organizations. For successful smart work, organizations have to try to overcome or minimize differences among members of organization.

• Journal of Information Technology Applications and Management
• /
• 제25권3호
• /
• pp.55-66
• /
• 2018

Early smart-work of company K was a technology-led way of applying ICT such as smart phones and mobile devices to business. After company K perceived the limitations of ICT-driven smart work, it propelled the work-smart, doing a work smart toward the way that human beings become central and a creative organizational culture is engendered. Company K propelled work-smart strategy in eight categories: simplification of data requirements, establishment efficient meeting culture, streamlining reporting and approval process, simplified document creation, overtime decrease, spreading flexible work system, settlement of healing leave, creating work-smart place. Company K set up an organizational culture secretariat dedicated to work-smart promotion and selected task priorities in consideration of urgency and effectiveness. Owing to such efforts, the company K's work-smart index rose sharply to 72 points this year from 56 points in the previous year. At the organizational culture survey, employees responded that organizational culture improved in all area. For a better future, company K analyzed its work-smart outcomes and planned progressively to improve its work-smart efforts based on employees opinions. This case study will serve as a guideline, for companies to make efforts to going forward to today work-smart beyond yesterday smart-work.

• 스마트미디어저널
• /
• 제6권4호
• /
• pp.17-23
• /
• 2017

오늘날 사업장들은 고객의 소비활동을 촉진하기 위해 다양한 방법의 IT기반 서비스를 이용하고 있다. 대표적으로 고객이 해당 사업장 근처에 접근했을 때 광고 문자나 할인쿠폰을 보내는 위치기반 서비스를 예로 들 수 있다. 이것은 사업장과 고객간의 상호작용이 아닌 사업장의 광고 내용을 고객의 의사와는 관계없이 일방적으로 고객의 스마트폰에 전송하는 형태이며 사업장은 어떤 고객에게 해당 광고내용을 전송했는지 실시간으로 알 수 없다. 현재 대부분의 서비스가 이러한 형태에 속한다. 따라서 사업장과 고객간의 상호작용이 이루어지는 새로운 형태의 위치기반 고객 서비스가 필요하다. 이것은 고객이 사업장을 방문했을 때 어떤 고객이 어떤 사업장을 방문하였는지를 자동으로 식별하여 해당 사업장의 컴퓨터에 실시간으로 전달하고, 사업장은 해당 정보를 이용하여 고객 맞춤형 서비스를 제공하는 시스템이다. 본 논문에서는 비콘을 이용하여 사업장과 고객간의 상호작용 및 고객식별을 위한 서비스 플랫폼을 개발한다. 또한 특정한 하나의 사업장에 제한된 것이 아닌 다양한 사업장과 고객들이 손쉽게 접근할 수 있는 오픈 플랫폼 환경을 제공한다.

• 아태비즈니스연구
• /
• 제9권4호
• /
• pp.13-27
• /
• 2018

This study aims to explore and identify factors of respondent's on the definition of 'smart community facilities', their usage and satisfaction in Malaysia. Study carried out in four sites which were Kota Belud, Kemaman, Lundu and Putrajaya. Data was collected through qualitative method where interviews was carried out with several smart community members in answering factors that drives the usage/participation, satisfaction and continuance intention from using the 'smart community facilities'. Interpretation from the qualitative approach reveals that community thinks infrastructure, content and digital services will help to generate and build up 'smart community'. This will give the benefit for the whole community as well as improve individual efficiency, lifestyles and well-being. Findings demonstrated that the advance of Internet will enhance people usage on being 'smart' and efficient and it should be further improved with better infrastructures, systematic development with sophisticated digital technology services, facilities and structured content, and also safety-security measures in place.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2011년도 제42회 하계학술대회
• /
• pp.720-721
• /
• 2011

본 논문에서는 제주 스마트그리드실증단지에서 진행중인 스마트그리드 5개 프로젝트 중 송배전분야의 전력망을 통합 운영하는 Smart Power Grid(SPG) 실증시스템의 설계와 구축 현황에 대해서 기술한다. 스마트그리드 프로젝트는 SPG외에도 ST(Smart Transportation), SP(Smart Place), SR(Smart Renewable), SES(mart Electric Service)가 있는데, SPG는 SES 프로젝트에서 운영하는 통합관제센터(TOC)를 거쳐 ST, SR, SP 시스템들과 운전 정보를 서로 교환하여 사용한다.

• 한국컴퓨터정보학회논문지
• /
• 제22권11호
• /
• pp.49-55
• /
• 2017

Recently, for safety of people, there are proposed so many technologies which detect density of people at the specific place or space. The representative technology for crowd density estimation was using image analysis method from CCTV images. However, this method had a weakness which could not be used and which's accuracy was lower at the dark or smog space. Therefore, in this paper, to solve this problem, we proposed a user density estimation system at closed space using high frequency and smart device. The system send inaudible high frequencies to smart devices and it count the smart devices which detect the high frequencies on the space. We tested real-time user density with the proposed system and ten smart devices to evaluate performance. According to the testing results, we confirmed that the proposed system's accuracy was 95% and it was very useful. Thus, because the proposed system could estimate about user density at specific space exactly, it could be useful technology for safety of people and measurement of space use state at indoor space.

• JSTS:Journal of Semiconductor Technology and Science
• /
• 제4권4호
• /
• pp.251-257
• /
• 2004

Nonvolatile FRAMs with a design rule of 0.18 ${\mu}m$ were developed for the high performance smart card. A 1Mb FRAM was embedded in place of an EEPROM and a 64Kb FRAM was embedded in place of a. SRAM. It was confirmed that the FRAMs performed the roles of the EEPROM and SRAM successfully using the asynchronous write/read operation method and the one time programming (OTP) scheme. The cycle time of the FRAM was 10 MHz, which remarkably improved the write performance of the smart card in comparison with that of the conventional smart card with an EEPROM. Additionally, a simple and smart bit-line reference scheme for the future FRAM device having a 1T1C cell type was proposed.