• Journal of Information Technology Applications and Management
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• 제27권2호
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• pp.51-71
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• 2020

Technological innovation can be both an opportunity and a crisis to take the initiative in the ecosystem, and companies are constantly competing to lead the platform within the ecosystem, including innovation in new products and services, absorption or integration of related industries. To cope with this rapid change in the environment today, it is essential to define the corporate ecosystem and platform business, and to understand the role and characteristics of users. This study seeks to conduct research on the usefulness, enjoyment, technicality, facilitation conditions, and causes of social impact on platform service loyalty to users of Kakao services. And this study will enable platform service providers through apps to use them as the basis for building business strategies in the service introduction phase.

• Smart Structures and Systems
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• 제11권2호
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• pp.135-161
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• 2013

This work presents a test platform for the assessment and benchmarking of modern actuators which have been specifically developed for the new field and service robotics applications. This versatile platform has been designed for the comparative analysis of actuators of dissimilar technology and operating conditions. It combines a modular design to adapt to linear and rotational actuators of different sizes, shapes and functions, as well as those with different load capacities, power and displacement. This test platform emulates the kinematics of robotic joints while an adaptive antagonist-load actuator allows reproducing the variable dynamic loads that actuators used in real robotics applications will be subjected to. A data acquisition system is used for monitoring and analyzing test actuator performance. The test platform combines hardware and software in the loop to allow actuator performance characterization. The use of the proposed test platform is demonstrated through the characterization and benchmarking of three controllable impedance actuators recently being incorporated into modern robotics.

• 한국컴퓨터정보학회논문지
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• 제24권5호
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• pp.73-80
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• 2019

In Korea, a budget of tens of trillion won is put into the national R & D project every year. Thanks to these efforts, Korea's ICT industry is gaining global attention. However, there are still a lot of problems that are lacking in terms of the cycle of managing national ICT R&D projects. In particular, the issue of sharing is very insufficient throughout the cycle of the national ICT R&D. In this paper, In this paper, We propose a platfom that can be shared throughout the cycle of managing blockchain-based national ICT R&D projects. This platform we call the Perfect Sharing Project Platform (PSPP). We describe that PSPP can achieve excellent research results through information sharing of project process[1-2]. To support the perfect sharing, this platform uses a new notion of consensus algorithm, called POA (Proof of Atomicity). This platform is suitable for sharing information.

• International journal of advanced smart convergence
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• 제11권3호
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• pp.79-84
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• 2022

Due to a series of online sex crimes cases and online class conversions caused by the spread of the coronavirus, alternatives to sex education in schools are urgently required. As a result of this study, the metaverse sex education platform was designed. Using this platform, learners are expected to cultivate correct adult awareness and digital citizenship. Within the metaverse platform, learners can participate more actively in learning. Instead of exposing one's name and face in a place dealing with sensitive gender issues, one can participate in education through his or her decorated avatar and participate in education much more actively than face-to-face education and express one's opinion through chat. In addition, education by level can be received regardless of time and place, which can have the effect of bridging the educational gap between urban and rural areas. In this paper, we propose a new sex education platform without time and space constraints by utilizing metaverse.

• 기술혁신연구
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• 제16권1호
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• pp.239-259
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• 2008

Korea is in the middle of a transition from the catch-up stage to the post catch-up stage. This requires a new approach, a new perspective, and a new strategy to survive in the new environment. This research investigates the post catch-up research activities in the public sector, including universities and national research institutes. In this case study, the experts and research teams at the highest level in the world are introduced, and research environments and know-how possessed by the experts and research teams are analyzed. The cases shows that the post catch-up research teams have research patterns to open new research field and integrate prior knowledge base with new knowledges from other research field. They succeed in producing highly regarded research results and making research platform for further advanced research.

• 디지털융복합연구
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• 제18권2호
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• pp.139-149
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• 2020

새로운 플랫폼 정부는 지능적인 정보기술을 활용하여 정부와 국민이 서로 협력하는 새로운 생태계 기반 정부 혁신과 지속 가능한 발전을 견인하는 역할을 할 것이다. 이에 플랫폼 정부의 플랫폼 구축을 위해 최근 관련 연구 동향에 대해 살펴보고 향후 미래정책 방향 및 연구기반을 마련하기 위한 토대를 구축하고자 한다. 연구 분석을 위해 각 부처와 정부산하기관에서 발행된 연구보고서를 텍스트마이닝 기법을 활용하여 텍스트 자료를 수집하고, 수집된 텍스트 자료를 토픽 모델링과 네트워크 분석을 시행하였다. 분석결과 미래전략과 집단 내에서의 네트워크 연결이 제대로 이루워지지 않고 있으며 연결 중심성이 강할수록 관계성이 약해지는 것을 도출하였다. 이는 정부가 플랫폼을 설계하고 데이터와 서비스를 공급하는 공급 역할에서 통합적, 상호 교류적 접점이 필요하며 정부와 시민, 기업의 협치가 가능한 생태계가 조성되어야 할 것이다. 본 연구를 통해 플랫폼 정부의 공급과 수요적 접근의 이해를 높이고 잠재적 토픽에 따라 적절한 변경관리 방법을 구현하기 위한 논의가 다각적으로 이루어지길 기대한다.

• 한국산업정보학회논문지
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• 제27권4호
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• pp.127-136
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• 2022

지속적인 기술 발전으로 더욱 다양한 구조의 플랫폼이 등장하고 있다. 기존 연구에서는 기술과 혁신을 기반으로 한 새로운 구조가 양면 시장으로 영향을 미칠 것으로 예측하고 있다. 탈중앙화 신원 확인(DID) 플랫폼은 블록체인 기술을 기반으로 한 새로운 플랫폼으로, 본 연구에서는 양면 시장의 관점에서 그 중요성을 평가하였다. 분석 네트워크 프로세스(Analytic Network Process)를 이용하여, IT, 플랫폼, 블록체인 전문가를 대상으로 쌍대비교 설문을 진행하였고, 일관성 비율 값이 0.1 이하인 데이터를 선별하여 총 12개의 데이터를 대상으로 분석하였다. 연구결과는 서비스 품질, 정책 지원, 개방성, 불확실성 순으로 중요도를 보였다. 본 연구는 블록체인 및 DID 플랫폼 기반 비즈니스 기업에게 전략적 의사결정을 개발하는데 유용한 정보로 활용될 수 있을 것으로 기대된다.

• Journal of Power Electronics
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• 제18권6호
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• pp.1771-1779
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• 2018

Modern trams with a super capacitor have gained a lot of attention in recent years due to its reliability, convenience, energy conservation and environmental friendliness. Because of its special charging characteristic, the traditional charging structure and control strategy cannot satisfy its charging requirements. This paper presents a new charging topology for fast charging modern trams with a super capacitor and it designs a controller using continuous control set model predictive control (CCS-MPC). There are three contributions in this paper. First, a new charging structure is designed and its mathematics model is derived. The cascade structure is adopted instead of the parallel structure to simplify the control process and to keep the rated power of the controllable part low. Second, a MPC control strategy is proposed to satisfy the charging characteristic. The optimal control signal can be obtained by solving the designed optimization problem. The optimal control signal is related to the discrete control action. In addition, mapping between the continuous control signal and the discrete control action is designed. Third, a semi-physical experimental platform is built to verify the proposed topology and control method. The simulation model and experiment platform are built to verify the correctness of the new structure and its control method. The results obtained show that the new topology can work effectively.

• 한국산업정보학회논문지
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• 제19권3호
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• pp.127-136
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• 2014

경영의 새로운 패러다임으로 기업과 소비자를 넘어 모든 이해관계자들이 함께 공동으로 협력하여 새로운 가치를 창출하는 Co-creation이 부각되고 있다. 공동으로 새로운 가치를 창출하기 위해서는 기업과 다양한 이해관계자들의 소통이 중요하다. 사실 기업은 소비자와의 소통을 위해 인터넷, SNS 등의 IT 기술을 활용하여 보다 효과적으로 Co-creation을 실현하기 위해 노력하고 있다. 그러나 아직까지 Co-creation을 위해 기업마다 개별적인 웹사이트나 SNS를 활용하고 있어 체계적인 관리가 어렵고 IT 기술에 대한 중복투자의 우려도 있다. 이에 본 연구에서는 사례분석을 통해 Co-creation을 더욱 쉽고 편리하게 활용할 수 있도록 Co-creation 플랫폼 개념모델을 제시하였고 이를 전문가 검증을 통해 수정 보완 하였다. 본 연구는 플랫폼에 필요한 요구사항 및 기능들을 제시하여 Co-creation 플랫폼의 설계를 위한 기초자료를 제공하였다는 점에서 공헌도가 있다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2003년도 추계학술대회
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• pp.1482-1487
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• 2003

This paper presents a new family of 4-DoF parallel mechanism with two platforms. The new mechanism is composed of front and rear platforms, and three limbs. Two limbs with 6dof joint (P-P-S-P) are attached to the each platform and are perpendicular to baseplate, while the middle limb with 4-Dof joints (R-R-R-P or R-R-P-P) is attached to the revolute joint that connect front and rear platform. The two-DoF-driving mechanism at the middle limb with two base-fixed prismatic actuators can generate the heaving and roll motions or two translational motions. Therefore, Therefore, the new 4-Dof parallel mechanism (1T-3R) can generate pitch motions at each platforms, roll, and heaving motions, while another type of new 4-Dof parallel mechanism (2T-2R) can generate pitch motions at each platforms, x and z translational motions. For 1T-3R mechanism, kinematic analyses including inverse, forward kinematics, and Jacobian are performed.