• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2008.10a
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• pp.66-69
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• 2008

본 연구에서는 포레스터 그룹에서 제시한 커뮤니티 활용그룹을 중심으로, 실험 참여자 12명을 섭외하여 사용자 조사를 진행한후, 정성적 분석을 진행하였다. 그 과정에서 슈나이더만의 네트웍을 활용하는 4가지 주요 행동들을 대입하여 이에 해당하는 행위들을 파악할 수 있도록 프레임웍을 갖추었다. 결과로 이들의 행동들이 6가지로 차이를 분명하게 나타내고 있으며 이를 통해 사용자 연구에서의 정성적 분석이 구체적 근거를 가질 수 있음을 검증하였다. 본 논문은 사용자 조사를 통해 연구를 진행하는 과정에서 섭외된 사용자의 객관적 검증을 위해 연구자의 성향을 조사할 수 있는 프레임웍을 반영하여 신뢰도를 높일 수 있음을 케이스 스터디로 연구하였다.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.42-45
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• 2016

본 논문은 기동성은 있지만 한정된 비행시간과 비행거리를 가진 드론을 이용한 지능형 영상 보안 감시 시스템을 제안한다. 드론이 가지는 한계점을 보완하기 위해 그리드 기반으로 시스템을 구성하며 분할된 영역에서 다중 드론간 대상물의 효율적인 추적 및 감시 모니터링을 위해 연계 추적 방식을 이용한다. 먼저, 한정된 비행거리를 위해 각 드론스테이션 간의 최적 거리를 제안한다. 제안한 최적 거리를 통해 생성된 중첩 감시영역에서 효율적 연계 추적을 위해 드론의 전력상태와 대상물의 이동방향을 고려한 최적의 드론 선정 알고리즘을 제시한다. 제안한 알고리즘은 케이스 스터디를 통해 그 응용 가능성을 검토한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.2 no.2
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• pp.57-63
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• 2001

This paper aims at searching the attentiveness and method in planning. design and construction procedure of the container house system where container is used as core framework. For this. we try to produce researching fundamental materials for the construction performance and design standards of steel house, and finish the sample exterior wall system of the container house. By applying this sample system to the two case study of container housing construction we find out that there are considerable efnciency of the cost saving and catch up schedule compared with existing brick housing construction system. This study is significant in that it shows future direction of technical development and investment on the prefabricate housing market through development of the prefabricated container housing system.

• Tunnel and Underground Space
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• v.16 no.4 s.63
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• pp.307-312
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• 2006

Radionuclide released from corroded container migrates through groundwater flow pathway in the underground rock. Therefore it is important to study the groundwater flow analysis for total system performance assessment of a HLW repository. In this study assuming a geological change of underground rock in future, the two dimensional groundwater flow analysis is done by the NAMMU, the assessment code for groundwater flow in porous media. Assuming the hypothetical repository with the reactivation of fault in the vicinity of it, the effect of change in aperture and permeability by reactivation of fault around a repository on groundwater pathway is studied.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2017.05a
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• pp.451-455
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• 2017

The reactive Eulerian-Lagrangian code is utilized to simulate combustion of ZPP/THPP in a closed vessel. In the paper, ignition delay of THPP is mainly studied since ZPP and THPP are isolated by a boron nitride wall. Only a numerical case study is conducted as experimental observation is inaccessible. Results showed THPP ignition delay affects initial shock strength thus not only the first peak become weak, but also the frequency of a pressure oscillation is slowed.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.25 no.6
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• pp.297-302
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• 2013

The ground source heat pump (GSHP) system has attracted attention, because of its stability of heat production, and the high efficiency of the system. However, there are few studies on the prediction method of the heat exchange rate for a horizontal GSHP system. In this research, in order to predict the performance of a horizontal GSHP system, coupled simulation with a ground heat transfer model and a heat exchanger circulation model was developed, and calculation of heat exchange rate was conducted by the developed tool. In order to optimally design the horizontal GSHP system, the flow rate of circulation water, and the depth and buried spaces of heat exchangers were considered by the case study. As a result, the temperature of circulation water and the heat exchange rate of the system were calculated in each case.

• 한국벤처창업학회:학술대회논문집
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• 2022.04a
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• pp.17-24
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• 2022

국내 창업연구 결과에 따르면 사내벤처 기업의 생존률 및 성과가 일반 창업기업 대비 더 높게 나타난다는 연구결과들이 제시되고 있다. 이에 우리 정부는 2017년부터 사내벤처 및 분사창업기업 육성을 위한 지원제도를 운영하고 있으며, 본 연구에서는 이러한 정부의 개입이 분사창업기업의 창업과 성장에 미치는 영향 관계를 분석하는 것을 목적으로 하고 있다. 본 연구의 대상자는 2019년 1차년도 사내벤처 육성프로그램에 참여한 7개의 기업 중 11개의 분사기업팀을 대상으로 하였으며, 주된 영역은 (1)분사 칭업자의 특성에 따른 기업가적 의도 및 (2) 모기업의 지원정책, (3) 정부의 정책 개입에 따른 분사창업과의 관계를 규명하고자 하였다. 3개월의 이노베이션 부트캠프 과정 이후 2022년까지 해당기업의 CEO 인터뷰 및 기사를 통해 추적한 결과, 사내벤처팀 모두 모기업의 지원정책과 본인의 업무를 기반으로 창업을 시작하였으며, 모기업 및 유통파트너를 첫 소비자로 하는 경우가 다수를 차지하였다. 모기업은 재정직 지원 제공하는 한편, 정부에서 요구한 '실패시 재입사 가능'의 조항을 준수하고 있었으며 이러한 정부의 정책개입은 중소기업의 사내벤처제도에 긍정적인 영향을 미치고 있음을 확인할 수 있다. 본 연구를 통해 우리나라 정부의 사내혁신을 통한 혁신창업 활성화에 이론적, 실무적, 정책적 제안을 제시하고자 한다.

• Clean Technology
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• v.22 no.3
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• pp.190-195
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• 2016

The thermal decomposition of waste energetic materials such as TNT, RDX and composition B in a commercial rotary kiln has previously been carried out. As part of the demilitarization process, the thermal decomposition of homogeneous double base propellant (DB) used in M8 and consisting predominantly of nitrocellulose and nitroglycerine is examined with respect to a number of operating conditions. A single condensed phase reaction with 4 species and 365 gas phase reactions and 59 species are considered. Simulation results show the sensitivity of the thermal decomposition of DB with temperature and velocity. At relatively low velocity with constant inlet hot air temperature, temperature in the rotary kiln was found to be highest, 953 K and 1300 K for cases 3 and 6 respectively. Illustrating that optimum operating temperature can be achieved by controlling the inlet velocity without additional cooling systems.

• Archives of design research
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• v.19 no.1 s.63
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• pp.79-88
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• 2006

A human face figure is a visual symbol of identity. Each different face per person is a critical information differentiating each person from others and it directly relates to individual identity. When we look back human history, historical change of recognition for a face led to the change of expression and communication media and it in turn caused many changes in expressing a face. However, there has not been no time period when people pay attention to a face more than this time. Technically, the advent of computer graphics opened new turning point in expressing human face figure. Especially, a visual image which can be produced, saved, and transferred in digital has no limitation in time and space, and its importance in communication is getting higher and higher. Among those visual image information, a face image in digital is getting more applications. Therefore, 3d (3-dimensional) expression of a face using computer graphics can be easily produced without any professional techniques, just like assembling puzzle parts composed of the shape of each part ands texture map, etc. This study presents a method with which a general visual designer can effectively express 3d type face by studying each producing step of 3d face expression and by visualizing case study based on the above-mentioned study result.

• Journal of Educational Research in Mathematics
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• v.27 no.4
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• pp.639-661
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• 2017

This article reviews several classroom observational frameworks and introduces one of them, Teaching for Robust Understanding of Mathematics (TRU Math) framework, in more detail. The TRU Math framework has unique features, especially of which it helps researchers and practitioners analyze lessons with a focus on opportunities to learn and on how students access to the learning opportunities in mathematics classrooms rather than focusing on teacher behaviors. In this article, using this TRU Math framework, a Korean high school mathematics lesson was analyzed. The analysis illustrates the aspects of good mathematics teaching according to the five dimensions that we theorized. It provides implications on how to better use the tool for both research and practice in Korean school culture and teacher professional development contexts.