• 한국정보시스템학회지:정보시스템연구
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• 제27권2호
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• pp.95-114
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• 2018

Purpose The recent concern over environmental problems such as greenhouse gas emission and fine dust contributes increasing interest in renewable energies. However the intrinsic characteristics of renewable energies, intermittent and stochastic generation, might cause serious problems to the stability and controllability of power grid. Therefore countermeasures such as virtual power plant (VPP) must be prepared in advance of the spread of uncontrollable distributed renewable energy resources to be one of major energy sources. Design/methodology/approach This study deals with the design concept of the VPP platform. we proposed as a technology solution for achieving the stability of power grid by guaranteeing a single power profile combining multiple distributed power sources with ICT. The core characteristics of VPP should be able to participate in the grid operation by responding to operation instructions from the system operator, KPX, as well as the wholesale electricity market. Findings Therefore this study includes energy storage device(ESS) as a controllable component as well as renewable energy resources such as photovoltaic and wind power generation. Based on this configuration, we discussed core element technologies of VPP and protype design of VPP solution platform according to system requirements. In the proposed solution platform, UX design for the integrated control center and brokerage system were included as well as ancillary service function to respond to KPX's operation instruction with utilizing the capability of ESS. In addition, a simulator was suggested to verify the VPP operations.

• 한국가구학회지
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• 제17권3호
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• pp.95-111
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• 2006

These series articles were written in order to understand rockers of today and to provide basic data of their designs and manufacture studying pattern changes in the West. In the first article of the series reports we already described the theoretical background of rockers and the Windsor and the Boston style among the American classic rockers from the eighteenth to the twentieth century. This article contained the characteristics of the styles of the Shaker rocker, the Wicker rocker, and the Platform rocker. The three periods associated with furnituremaking in the Shaker sect are; the Primitive Era, which lasted from 1790 to 1820; the Classical Era, from 1820 to 1860; and the Final Phase, from 1860 to 1935. The important skills the Shaker needed to make the Shaker rocker are woodturning joinery, seat braid weaving and steam bending for the slats. The Wicker rocker continues to be extremely popular furniture style as the wicker proved equally effective for translating the ornate vine-like motifs popular among Art Nouveau proponents. The Wicker rockers were developed for child's, gentleman's and lady's, and it represents the most diverse forms among the above mentioned styles. However the rocker skates were often clumsy and took up too much room, preventing the chair from being shoved close to the wall and out of the way. These problems were overcome by the Platform rocker. The most important innovation was the technical development of a stationary base, which allowed the chair to rock noiselessly, without skating along the floor. The Modernism of the modern furnitures in America and Europe were affected by the characteristics of the Shaker rocker, the Wicker rocker, and the Platform rocker.

• 디지털융복합연구
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• 제19권7호
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• pp.79-85
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• 2021

코로나19 이후 배달 플랫폼에 참여하는 개인이 증가하고 있다. 이러한 현상은 좀 더 나은 미래 설계를 위하여 한 개 이상의 소득원을 확보한다는 엔(n)잡러 세태와 맞물려, 더욱 관심이 고조되고 있다. 그러나 아직 해당 현상에 관한 학술적 논의는 매우 부족하다. 이에, 본 연구는 코로나 19가 시작된 2019년 1월부터 현시점까지의 기간을 연구대상으로, 관련 뉴스 데이터에 대한 텍스트 마이닝을 통한 사회적 논의주제를 발굴하고자 하였다. 결과는 현상에 대한 소개, 참여자 속성에 대한 논의, 그들의 수익에 관한 관심, 좋은 일자리인지에 대한 담론, 그리고 그들을 둘러싼 우려라는 주제로 함축·제시하였다. 본 연구는 배달 플랫폼 비즈니스와 관련된 논의의 관점을 개인 참여자로 확대하여 현상을 체계적으로 조망하였다는데 의의가 존재한다. 본 연구를 기반으로, 향후 감성분석 결합을 통하여 특정 주제에 관한 긍정·부정 감성조망 등 해당 현상을 둘러싼 더욱 세밀한 사회적 담론 분석이 형성되길 기대한다.

• 한국지리정보학회지
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• 제25권4호
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• pp.119-135
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• 2022

디지털 플랫폼은 온라인 커뮤니티의 운영과 지속가능성에 중요한 역할을 한다. 그러나 디지털 플랫폼 개발의 진정한 혜택은 누구를 위한 것이며 스마트 커뮤니티의 발전을 위해 디지털 플랫폼이 제공하는 혜택은 무엇이 있을까? 본 연구는 이러한 질문에 답하고자 디지털 플랫폼과 스마트 커뮤니티 간의 연관성을 이해하고 군집분석 프로세스를 사용하여 각 디지털 플랫폼의 스마트커뮤니티 지원에 관한 특성을 분석하는 것을 목표로 하였다. 본 연구에는 29개의 디지털 플랫폼이 연구 사례로 활용되었다. 이를 통해 디지털 플랫폼 특성을 구분하여 각 특성에 따른 플랫폼 서비스가 어떻게 스마트 커뮤니티의 참여를 유도하고 정보 및 서비스 제공을 개선해나가는지를 분석하였다. 디지털 플랫폼의 발전은 정책 입안자에게 스마트커뮤니티 육성을 통한 도시 혁신의 새로운 도전과제를 제공하기도 하고 효과적이고 효율적인 서비스 제공 수단으로서의 역할이 강화되고 있는 것으로 나타났다.

• 한국IT서비스학회지
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• 제22권4호
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• pp.111-122
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• 2023

Since the organization of civil servants has been divided and stratified according to the characteristics of the bureaucracy, it is inevitable that the organization and personnel will increase when new tasks arise. Even in the process of informatization, only the processing method was brought online while leaving the existing business processing procedures as they were, so there was no reduction in manpower through informatization. In order to maintain or upgrade the current administrative services while reducing the number of civil servants, it is inevitable to use AI technology. By using data and AI to integrate the 'powers and responsibilities assigned to the officials in charge', manpower can be reduced, and the reduced costs can be reinvested in the collection, analysis, and utilization of on-site data to further promote intelligent informatization. In this study, as a way for the government's success in intelligent informatization innovation, we proposed a 'Civil Servants-AI Collaboration Platform'. This Platform based on the civil servant proposal system as a reward system and the characteristics of intelligent informatization that are different from the informatization. By establishing a 'Civil Servants-AI Collaboration Platform', the performance evaluation system of the short-term evaluation method by superiors can be improved to a data-driven always-on evaluation method, thereby alleviating the rigid hierarchy of government organizations. In addition, through the operation of Collaboration Platform, it will become common to define and solve problems using data and AI, and the intelligence informatization of government organizations will be activated.

• 컴퓨터교육학회논문지
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• 제5권4호
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• pp.79-89
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• 2002

기존의 고정 단발기 (PC)에서만 주로 행해지던 각종 다중 사용자 접속 온라인 응용이 최근 PC와 PDA, 휴대폰 등이 공동 작업을 수행하는 멀티 플랫폼 기반 온라인 응용으로 전환되고 있다. 그러나 지금까지 멀티 플랫폼 기반 온라인 응용은 다중 사용자의 공동 데이터의 동시 접근 및 각 클라이언트의 처리 능력과 통신 속도의 비대칭을 고려하지 않아 컨텐츠가 매우 단순한 실정이다. 이 논문에서는 멀티 플랫폼 기반 동시성 제어 기법, 다양한 클라이언트간의 변경 전파 프로토콜, 모바일 클라이언트의 특성을 고려한 객체 관리 기술을 제안하였다. 그리고 멀티 플랫폼 기반 채팅 프로그램을 제작하여 제안한 기법들이 적절히 동작함을 보였다.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2010년 춘계학술대회논문집
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• pp.505-507
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• 2010

본 논문에서는 대심도 지하철역사의 승강장 종류에 따라 화재시 연기의 전파특성을 비교하였다. 본 연구에서 비교 대상역사로서 상대식 승강장은 서울 숭실대입구역사(47m)로, 섬식은 부산 만덕지하역사(65m)를 선정하여 각 역사에 대하여 화재전산모사를 수행하였다. 해석을 통하여 화재의 연기전파특성을 파악하였으며, 그 결과를 이용하여 각 승강장 종류별로 대심도 지하역사의 방재대책을 세우고자 한다.

• Journal of Information Technology Applications and Management
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• 제28권2호
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• pp.1-16
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• 2021

In recent years, as IT technologies such as cloud computing and mobile payment have evolved and Internet users have increased, the Internet financial market has become intelligent, mobile, and platformed. This study considers the impact of the psychological characteristics of platform systems and users on the performance of fintech platforms. The results of this study are as follows. Information quality affected trust and commitment, service quality affected commitment only, and system quality affected trust and commitment. The perceived risk affected trust and commitment, and the perceived benefit only affected trust and was shown to have an insignificant relationship with immersion. Trust has been shown to have a significant relationship with commitment, and both trust and commitment affected performance. In the validation of mediation effects, trust has shown a partially mediated effect between information quality, system quality, perceived risks, and perceived benefits and performance. There was no mediation effect between service quality and performance. Immersion has been shown to have a partial mediating effect between information quality, service quality, system quality, perceived risk and performance, and there is no mediating effect between perceived benefits and performance. This study showed what are the main factors that affect the performance of the fintech platform and will be used as a useful foundation for increasing the performance of the platform in the future.

• International Journal of Internet, Broadcasting and Communication
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• 제13권1호
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• pp.37-46
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• 2021

Recently, social technologies have been created to solve problems from businesses for the establishment of generational solidarity ecosystem in terms of employment, residential space, network and social capital, age, cognitive and environmental aspects. This is senior-friendly healthcare business system aimed at meeting the senior needs for health life to enjoy active consumption culture life even after retirement, becoming a catalyst for minimizing generational conflicts, preventing the cognitive and physical deterioration of seniority in the areas of life healthcare, fitness and well-aging, and expanding into systems necessary for seniority self-reliance. We would like to draw up the development and requirements of the concept of the service platform for the study of collective characteristics for generation solidarity with senior class and the establishment of a customized senior health life system for generation solidarity. This system is characterized by a platform that can prevent the decline of seniors' cognitive and physical functions and enhance emotional stability. It is significant in providing feedback on the risk perception index, fall index, and prevention training index information to the child through the analysis and extraction of the senior health index for risk perception, fall probability, and fall prevention.

• 한국IT서비스학회지
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• 제20권5호
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• pp.147-158
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• 2021

The digital transformation and COVID-19 are also causing major changes in teaching-learning methods. The biggest change is the spread of remote training and the emergence of various innovative learning platforms. Distance education has been criticized for not meeting technology trends and field demands..However, the problem of distance education is being solved through a system that supports various interactions and collaborations and supports customized learning paths. The researcher conducted a case study on domestic and foreign learning platforms that provide non-face-to-face ICT education. Based on the case study results, the researcher presented the functional characteristics of a learning platform that effectively supports non-face-to-face learning. In common, these sites faithfully supported the basic functions of the information system. In addition to learning progress check and learning guidance, some innovative learning platforms were providing differentiated functions in practice support, performance management, mentoring, learning data analysis, curation provision, and CDP support. Most learning platforms supported one-way, superficial interaction. If the platform effectively supports a variety of learning experiences and provides an integrated learning experience thanks to the development of IT technology, user satisfaction with the learning platform, intention to continue learning, and achievement will increase.