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이광호,양관모,Lee, Kwang-Ho,Yang, Kwan-mo 대한전기학회 2017 전기학회논문지 Vol.66 No.1
Social Welfare is useful concept for evaluating the effectiveness of an economic policy in micro economics. This paper focuses on Social Welfare(SW) of electricity market incorporating demand response(DR). Competition between DR and generation company is modeled as a simple bid function. DR function can be considered as an negative generation(called Negawatt) and as an element of modified demand function. These two approaches result in the same demand reduction, generation power, and the market price. However, SW in the modified demand function approach is not identical to SW in the Negawatt approach. It makes the numerical index of DR effectiveness less persuasive. This paper proposes modified definition of SW in the demand function approach. The proposed definition of SW leads the DR effectiveness index to be identical to that in the Negawatt approach.
토끼의 두개골내에 형성된 골결손부에서 $HA/{\beta}-TCP$ composite powders의 골형성에 관한 조직학적 연구
이광호,장현선,박주철,김흥중,김종관,김병옥,Lee, Kwang-Ho,Jang, Hyun-seon,Park, Joo-Cheol,Kim, Heung-Joong,Kim, Chong-Kwan,Kim, Byung-Ock 대한치주과학회 2006 Journal of Periodontal & Implant Science Vol.36 No.1
The purpose of the present study was to evaluate the histologic results of bone cavities that were surgically created in the calvaria of rabbit and filled with $HA/{\beta}-TCP$ composite powders, which had been developed in Korea (Dentium, Korea). Ten young adult rabbits were used. Four defects were surgically produced in calvaria of each rabbit. Each rabbit was anesthetized with Ketamine-HCI (5 mg/kg, Yuhan Cor. Korea) and Xylazine-HCI (1.5 ml/kg, Yuhan Cor. Korea)). An incision was made to the bony cranium and the periosteum was reflected. Using a trephine bur (external diameter: 8 mm, 3i, USA), 4 'through-and-through' bone defects were created with copious irrigation, and classified into 4 groups: control group: no graft materials, experimental group I: normal saline + graft materials: experimental group II: venous blood + graft materials: experimental group III: graft materials only. The defects were randomly filled with graft materials. The defects were closed with resorbable suture material. At the end of the surgical procedure, all animals received a single intramuscular injection of antibiotics Gentamicin (0.1 mg/kg, Dae Sung Microb. Korea). Rabbits were sacrificed with phentobarbital (100 mg/kg) intravenously at 1-, 2-, 4-, 6- and 8-week after. Specimens were treated with hydrochloric acid decalcifying solution (Fisher Scientific, Tustin, CA) and sectioned by bisecting the 8 mm diameter defects. The histologic specimens were prepared in the general method with H & E staining at 6 ${\mu}m$ in thickness. The results were as follows; 1. New bone formation showed from after 2-week of surgery in defect area. As time lapsed, lots of new bone formation and mature bones showed. 2. Histologically, degree of new bone formation could not be discerned among the experimental groups. But, for experimental group II, lots of cells gathered around graft materials after 1-week of surgery, new bone formed slightly faster and than the others at 1-week after. For experimental group I, a few inflammatory finding showed around graft material at after 1-week and after 2-week of surgery. 3. No bone formation did show for control group. Based on histologic results, the new $HA/{\beta}-TCP$ composite powders appeared to act as a scaffolding material for regeneration of osseous defects.
이광호(Kwang-Ho Lee),양관모(Kwan-mo Yang) 대한전기학회 2017 전기학회논문지 Vol.66 No.2
Social Welfare is useful concept for evaluating the effectiveness of an economic policy in micro economics. This paper focuses on Social Welfare(SW) of electricity market incorporating demand response(DR). Competition between DR and generation company is modeled as a simple bid function. DR function can be considered as an negative generation(called Negawatt) and as an element of modified demand function. These two approaches result in the same demand reduction, generation power, and the market price. However, SW in the modified demand function approach is not identical to SW in the Negawatt approach. It makes the numerical index of DR effectiveness less persuasive. This paper proposes modified definition of SW in the demand function approach. The proposed definition of SW leads the DR effectiveness index to be identical to that in the Negawatt approach.
기술규제 개혁을 위한 의제설정 연구사업(2차년도) - 제1권: 기술규제 의제설정 연구 -
이광호(Kwang Ho Lee),박찬수(Chan Soo Park),김석관(Seok Kwan Kim),조용래(Yong Rae Cho),김명순(Myungsoon Kim),목은지(Eunji Mok),박현준(Hyunjun Park),권기석 과학기술정책연구원 2019 정책연구 Vol.- No.-
This study has successively sought core agendas and countermeasures towards them since last year. This study has covered all the four independent agendas, which share a penetrating issue as ‘relationship between innovation and regulation’, and suggested alternatives to overcome regulatory reform of the government by examining the present system. Findings and implications drew from the four research agendas, ‘research foundation-technology-industry infrastructure’, are as follows. First of all, this study analyzed the trends and characteristics of technology-related regulatory research using network analysis. Especially, it analyzed trends and directions of academic research, as a consecutive study that analyzed domestic news articles. Based on the result, domestic research of technological regulation has revolved around Law, and has wide variation depending on the issues. This is in contrast to the trends of overseas research that methodologies develop as the research of technological regulation expands to other disciplines such as economics and development studies. Domestic research of technological regulation has limitations such as lack of academic foundation, lack of continuity and insufficient theoretical development, therefore, it is time to consider coping plans to solve the problems. Second, this paper analyzed regulatory issues arising from blockchain. The uncertainty of blockchain requires changes in viewpoint towards GPTs or disruptive technologies, and it is crucial to complement standards and legal systems. Regarding issues of standards, it is essential to enhance interoperability, setting standards for evaluation, consolidating cyber-security and privacy and SEPs of the blockchain. Issues arising from legal systems, it is important to apply different approaches to the government and private sector to overcome the uncertainty of restriction and fostering. Third, this study conducted case studies of O2O to improve operating patterns and resolve the issues on the entry regulations of the new industry. This study categorized O2O business models based on novelty, relationships with current businesses, the intensity of regulation and analyzed five cases: Uber, Airbnb, Callbus, Heydealer and Veluga. Based on the analysis, problems occurred such as neglecting customer preference, insufficient reviews of path dependency of regulation and insufficient estimation of the ripple effect caused by deregulation. Following suggestions can be taken as countermeasures: systematization to maximize consumer benefits, detecting changes in the legislative environment and obtaining an objective basis while estimating pre-socioeconomic impacts. Fourth, this study analyzed leading TIC companies to formulate master plans for developing the infrastructure of technological regulation. UL, TUV and SGS were the subjects of analysis which have a long history in TIC industry, and we analyzed their growth processes based on the framework of ‘growth strategy-competition-system’. Based on the result, balancing between the accumulation of innovative capacity in a company and separation of public and market function played an important role in coevolution with government systems. As an implication for domestic TIC organizations, it needs to separate public and private characteristics, enhancing global competitiveness and intensified supervision of public areas.