• Proceedings of the KSME Conference
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• 2000.04a
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• pp.523-528
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• 2000

In this paper, the new type biped walking robot which is composed of the minimum number or links just for walking and its appropriate gaits are proposed. The proposed new gaits for this robot are four-crossing, crawling, standing and turning gait. In designing the biped robot we propose the Performance Index which means the needed torque per a moving distance and generate foot trajectories by $3^{rd}$ order spline Interpolation. Among those, numerically we find the optimal conditions which minimize the Performance Index. Dynamically stable walking of the biped robot is realized by satisfying the stability condition of ZMP(zero moment point), which is related to maintaining the ZMP within the region of the supporting foot during the s1n91e leg support phase. We determine the region of mass center from the stability condition of ZMP and plan references which track the mass conte. trajectory of constant velocity. Finally we implement the gaits statically tracking the planned trajectories using PD control method.

• Journal of Environmental Impact Assessment
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• v.20 no.2
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• pp.235-248
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• 2011

In this study, we investigated the effect of carbon sequestration and sink on the environmental impact assessment of a Bogeumjari Housing Project. Through the case study, we found that, if the project is implemented, the amount of carbon stock tends to decrease greatly while as the amount of the carbon emission tends to greatly increase. Furthermore, we found that the future land use should be planned in detail in order to maintain the soil carbon stock prior to development. Also, enlargement of undeveloped forest land area would be more efficient than that of newly planted area in terms of carbon sequestration.

• Korean Journal of Health Education and Promotion
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• v.8 no.2
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• pp.1-5
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• 1991

Definition of health education can be various depending on historical background and individual point of view. In the industrialized era when health promotion is given a high priority in health activities, health education could be defined as a combination of planned learning experiences and social actions, which expand health knowledge and experiences of individuals and communities in order to meet their health needs, change harmful health behaviors to be desirable for health promotion and motivate them to do that. To realize the proposed definition of health education, health education should develop new policies in harmony with health promotion, facilitate the development of human resources, reflect the modern educational technology, strengthen multisectoral approach, and pay more attention to monitoring and evaluation. To fulfill the above mentioned role, health education approach should shift foci from diseases to health orientation, from individualistic health behavior modification to a systematic change of the general public, from medical domination to recognition of lay competence and from authoritarian health education to supportive health education.

• Journal of Korean Elementary Science Education
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• v.19 no.2
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• pp.83-92
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• 2000

The purpose of this study was to investigate the characteristics of formative assessment in elementary school science teaching. In order to examine the practices of formative assessment in science teaching, 8 science classes were observed and video-taped for each of two instructions. We also interviewed the teachers and students with semi-structured questions. The result indicated that the teachers used planned formative assessment and interactive formative assessment. Teachers assessed three aspects of student loaming in science classroom: the student's personal, social and science development. However, the majority assessed in science teaching was science development. Teachers used observation, question and answer, dialogue, reports, and presentation as the formative assessment methods. The process of formative assessment was categorized as to get information, to judge and to give feedback. These three aspects were interrelated and interdependent. The type of question and feedback was influenced on the extent of the interaction between teachers and students.

• Journal of the Korean Professional Engineers Association
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• v.34 no.5
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• pp.34-39
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• 2001

Seoul World Cup Stadium is created as a state-of-the-art versatile World Cup stadium. In order to ensure that the 2002 World Cup will be a successful and exciting sports and cultural event that will draw world class athletes, millions of spectators, and organizers from all around the world. And various facilities will be established in the Seoul World Cup Stadium that will allow the citizens to use the stadium for a wide range of exciting sports, cultural and social activites. The Building Services of Seoul World Cup Stadium is planned by placing emphasis on building maintenance and energy saving, considering the characteristics of state-of-the-art versatile World Cup Stadium and various facilities after the World Cup 2002

• Journal of Korean Society for Geospatial Information Science
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• v.2 no.1 s.3
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• pp.107-119
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• 1994

Modern war is called as information war. So an Information Systems which operate hitech-weapon is evaluated important by the ARMY. As terrain analysis techniques we an essential element, computer-based terrain analysis techniques for the army are developed. This paper studies the method of tactical terrain analysis data base construction and presents cross-country mobility after analysis officer analysis overlayed terrain data. Also, Terrain information data base construction method is presented through this analysis, which planned a suitable plan of operations in order to mission accomplishment in normal times.

• Proceedings of the Korea Society for Simulation Conference
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• 1998.10a
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• pp.17-20
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• 1998

The purpose of this paper is to develop a port simulation program for Inchon Port. The arrival and departure data from Inchon Port are analyzed, several probability density functions for the interval time and service time are estimated, and the berthing rules are constructed based on experts experiences. The port simulation program is written in visual basic considering the interarrival p.d.f., service rate p.d.f., berthing rules, and dual-dock system, and is used to analyze the effects of the changes in ship arrival rate and service rate upon the demurrage. It is expected that we can use the simulation results in order to prepare proper service level and to evaluate the appropriate investment strategy to be planned.

• Korean Institute of Interior Design Journal
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• v.21 no.6
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• pp.186-193
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• 2012

This study is to reveal the periodical form of the 4 staged building sites with the size and the site composition of the master plan and floor plan of the Ungjindan (altar) from the Ungjindan excavation works in 2011. In order to project the research results aiming to the purpose of the study, the basic study was done with collecting data about shrine architecture for its architectural characteristics and case studies with ancestral facilities such as the Ak hae dok (national-level ancestral ritual to the big mountain, ocean and river) to understand the exact form of the site plan and architectural composition elements through the general information and excavation status. In addition, with the current situation and information from the excavation works the planned measurement scale will be calculated in inference for the size of the construction by stages and speculate the floor plan composition of the shrine architecture.

• Proceedings of the KIPE Conference
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• 2005.07a
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• pp.501-503
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• 2005

The improvement of load following operation of the thermal power plant is influenced to the electrical quality. Analysis of boiler, turbine, and governor system, and the study of control algorithm are preceded. The thermal power plant is operated by various control systems. In the case of faulty governor system, it takes long days to solve the problem and impossible to repair the mechanism without outage. A non-planned out-age is taken into consideration because of economical power production. In this paper, to clear the continuous swings of an old turbine governor system(YEOSU #1), the trend, the control logic, and the hydraulic mechanism are analyzed, and then the control circuit with ADAPT function and the 1st order lag circuit are inserted and modified. After that, the power plant comes to automatic governor control operation.

• Proceedings of the KIPE Conference
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• 2018.07a
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• pp.273-274
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• 2018

Recently, many countries around the world are investing heavily in green industries based on green IT technology. The key industry in the green industry is LED. If we replace traditional lighting, we can save a lot of socioeconomic costs. Because it is energy efficient. However, the research and development on maintenance and management are still insignificant about LED lighting. Therefore, after the failure, the post-treatment is delayed and often occurs. In order to solve these problems, it is planned to detect the failure of the LED lighting and to establish a monitoring system that can monitor the situation in real time on the computer or mobile phone of the remote manager using the latest IoT network technology.