• 융합보안논문지
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• 제23권1호
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• pp.147-159
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• 2023

최근 챗 GPT 인공지능(AI)은 전 세계 모든 정부 및 기업, 군 분야까지 초미의 관심사이다. 기존의 읽고 쓰는 AI시대에서 말과 글과 그림을 만들어 내는 생성형 AI로 인간과의 소통까지도 가능한 시대에 진입했다. 최근 우리나라 국가 위기시 발령하는 국가기관의 현행 법·령의 복잡성과 전·평시 법률적용 시기의 모호성으로 인해 상황조치의 골든타임을 놓치는 경우가 많았다. 이러한 이유들로 대형 참사 및 북한과의 군사적 충돌 때마다 제대로 된 대응을 하지 못했다. 따라서 본 연구의 목적은 이러한 상황을 극복하기 위한 제언으로 국가 위기시 컨트럴타워 역할을 수행 할 수 있는 "국가위기 관리 기본모법" 과 이를 활용하는 "인공지능 관련법" 개정과 현재 인공지능 기술을 민·관·군·경과 상호 연동하는 "인공지능 거버넌스 활성화 방안" 및 전국 지자체 통합방위 종합상황실내 "MIDS 인공지능반"을 신설하여 인공지능을 활용한 미래의 통합방위체계 발전방안을 제시하였다.

• 전력전자학회:학술대회논문집
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• 전력전자학회 2003년도 춘계전력전자학술대회 논문집(1)
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• pp.461-466
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• 2003

This paper presents the speed control of the surface-mounted permanent-magnet synchronous motors (SMPMSM) for the elevator drive. The elevator motor needs to be a compact and slim type. Essentially, the proposed scheme uses a vector control algorithm for a speed and torque control. This system is implemented using a high speed 32-bit DSP (TMS320C31-50), a high-integrated logic device FPGA (EPF10K10-Tl144-3) to design compactly and Inexpensively The proposed scheme is verified through digital simulation and experiments for a three-phase 13.3kW SMPMSM as a MRL(MachineRoomless) elevator motor ill the laboratory. Finally, experiment of the test tower was performed with a 48kW PWM converter-inverter system for a high- speed elevator .

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 제36회 하계학술대회 논문집 A
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• pp.542-544
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• 2005

Recently, the principal processes of T/L design tend to computerize and therefore integrated T/L design system has been developed. Since, it makes the automatic selection of T/L route, tower position and optimum design possible, computerized design method is applied all over the world. KEPCO introduced Optimal PowerLINE for T/L design in Myanmar 500kV project that is as a part of overseas project. And as a result of that work, effective and economical design was carried out. This paper presents the comparative analysis between Previous method and Optimal PowerLINE method for investigating practical application to Myanmar 500kV T/L design.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 춘계학술대회논문집
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• pp.280-285
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• 2000

With recent development of technology of high stiffness material and the structural design, the construction of high rise structures such as tall building, tower has increased. The more flexible and slender structure is vulnerable to the internal and external dynamic loads induced by earthquake, wind and traffic load. There have been great effort and many researches to minimize the influence of dynamic loads on the structure. The traditional and stable method, the application of the passive damper, is not able to comply with various dynamic loads, while the mass damper which active control technology is integrated can effectively comply with load types. Therefore, the application of active control of huge structures with AMD(Active mass damper) or HMD(Hybrid Mass damper) is increasing. Up to now, most of actuators are servomotor and hydraulic actuator. But it is known that the electromagnetic actuator applies non contacting control force, which makes the control system easier with no characteristic change depending on time. In this paper, Hybrid mass damper with electromagnetic actuator was designed and applied to building scaled structure. The performance of designed HMD tested by shake table test is included.

• 국제초고층학회논문집
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• 제2권3호
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• pp.271-283
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• 2013

This paper introduces the current status of high-rise building design in Japan, with reference to some recent projects. Firstly, the design approval system and procedures for high-rise buildings and structures in Japan are introduced. Then, performance-based wind-resistant design of a 300 m-high building, Abeno Harukas, is introduced, where building configuration, superstructure systems and various damping devices are sophisticatedly integrated to ensure a higher level of safety and comfort against wind actions. Next, design of a 213 m-high building is introduced with special attention to habitability against the wind-induced horizontal motion. Finally, performance-based wind-resistant design of a 634 m-high tower, Tokyo Sky Tree, is introduced. For this structure, the core column system was adopted to satisfy the strict design requirements due to the severest level of seismic excitations and wind actions.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2006년도 춘계학술대회
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• pp.241-244
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• 2006

Recently wind turbines become large, constructed as farms and going out to offshore. Different design approach from onshore is needed for offshore wind turbine. At this paper concept and preliminary design of an offshore wind turbine of 3MW rated power are performed. The concept design started from modelling of the generator and gearbox. With these modelling the optimum specifications was acquired. Integrated type of drive train is designed with all parts are mounted on the tower top as the offshore maintenance strategy. At the preliminary stage control system, power production algorithm and safety system are designed. Load calculation is also performed. The 3MW offshore wind turbine concept/preliminary design and the process of design are obtained as results.

• 한국유기농업학회지
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• 제22권4호
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• pp.561-579
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• 2014

This research estimates the necessity of a better governance plan on the purpose of fulfillment energy recovery by building resource recycling system for biomass resources and waste resources that derive from agricultural and mountain village areas. The utilization of new renewable energy technology which uses waste and biomass sources diverse as variety of resources, collecting method, operator etc. and is structurally complicated the formation of policy is also very difficult. There is failure because of the problems which occurs from the policy led by government. Biomass Town Development Project should be made through the central government and the local government integrated support system and should be formed a consultative group in order to process the project mutually with these two department including the experts from the related areas. This consultative group, while government organizations carry out the hub function of strategic knowledge management, should carry out the control tower function to be able to be net working transfer the information with the cooperation of private and government so vitalize the communication area among the related actors. And to be able to increase the participation rate of the local people the consistent and various educations should be given so a smooth business promotion progress will be desired through the change of perception and coactive participation of people.

• 건축역사연구
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• 제28권5호
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• pp.27-41
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• 2019

This study covered the features and development process of the stylobate of the Sumijwa style, which emerged in Silla around the late 7th century. In the Period of North and South Dynasties, Sumijwa was used as the seat of the Buddha. It was used as a stylobate of tower in the Sui Dynasty and as a stylobate of central buildings in the Tang Dynasty, raising the status of buildings. In the late 7th century, Silla faithfully embodied Buddhist view of the world under its architecture by accepting the latest stylobate of the Sumijwa style. The pagoda of Hwangnyongsa Temple is believed to be the beginning of the stylobate of the Sumijwa style, in Silla. Gradually, in the central buildings within the capital, the stylobate of the Sumijwa style became common. Starting with Bulguksa Temple's Daeungjeon Hall, the materials of stylobate and staircaes will be integrated from the late 8th century. Silla's stylobate of the Sumijwa style can be evaluated as a step-by-step leap in religious, political, technical and aesthetic's terms.

• 대한화학회지
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• 제47권6호
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• pp.633-644
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• 2003

제 7차 교육과정에 의한 화학 I 교과서 탐구영역에서 활용 가능한 탐구 요소들을 조사，분석하여 화학 I 교과서의 제 7차 과학 교육과정 반영 정도와 탐구 학습의 교육적 시사점을 찾고자하였다. 교과서 탐구 영역의 분석은 제 7차 과학 교육과정에서 제시한 탐구 요소들을 기준으로 하였다. 전반적으로 볼 때 제 7차 화학 I 교과서의 탐구 영역 에 기초 탐구 요소는 측정， 분류를 제외하고는 비교적 고르게 반영되어있다. 그러나 통함 탐구 요소는 자료 해석의 비율이 절반을 넘으며， 자료 변환， 결론 도출， 문제 인식은 어느 정도 활용가능하나 그 외의 통함 탐구 요소의 비율은 매우 작다. 탐구활동도 견학과 과제연구 비율은 거의 없거나 이주 작다. 제 7차 과학 교육과정에서는 다양한 탐구 학습 을 강조하고 있음으로， 위와 같은 통합탐구 요소와 탐구 활동의 편중성을 보완할 수 있는 방향으로 탐구 학습을 운영해야 할 것이다.

• Wind and Structures
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• 제30권4호
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• pp.433-450
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• 2020

The strong turbulence characteristic of typhoon not only will significantly change flow field characteristics surrounding the large-scale wind turbine and aerodynamic force distribution on surface, but also may cause morphological evolution of coast dune and thereby form sand storms. A 5MW horizontal-axis wind turbine in a wind power plant of southeastern coastal areas in China was chosen to investigate the distribution law of additional loads caused by wind-sand coupling movement of coast dune at landing of strong typhoons. Firstly, a mesoscale Weather Research and Forecasting (WRF) mode was introduced in for high spatial resolution simulation of typhoon "Megi". Wind speed profile on the boundary layer of typhoon was gained through fitting based on nonlinear least squares and then it was integrated into the user-defined function (UDF) as an entry condition of small-scaled CFD numerical simulation. On this basis, a synchronous iterative modeling of wind field and sand particle combination was carried out by using a continuous phase and discrete phase. Influencing laws of typhoon and normal wind on moving characteristics of sand particles, equivalent pressure distribution mode of structural surface and characteristics of lift resistance coefficient were compared. Results demonstrated that: Compared with normal wind, mesoscale typhoon intensifies the 3D aerodynamic distribution mode on structural surface of wind turbine significantly. Different from wind loads, sand loads mainly impact on 30° ranges at two sides of the lower windward region on the tower. The ratio between sand loads and wind load reaches 3.937% and the maximum sand pressure coefficient is 0.09. The coupling impact effect of strong typhoon and large sand particles is more significant, in which the resistance coefficient of tower is increased by 9.80% to the maximum extent. The maximum resistance coefficient in typhoon field is 13.79% higher than that in the normal wind field.