• Journal of Biosystems Engineering
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• v.25 no.1
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• pp.1-10
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• 2000

This study was conducted to develop the mathmatical model for predicting the side thrust which is generated by the shearing action on the vertical surfaces of the sides of the track. Experiments were conducted with the three different shear plates with grouser length of 1, 3 and 5 cm for two different soil condition using soil bin system. The measured side thrust were compared with the values predicted by the new model developed in this study and by Bekker's model respectively. The values of side thrust predicted by the new model were more close to the measured values than those of the side thrust predicted by Bekker's model . The total thrust measured were also compared with the values predicted by the conventional model which considers only bottom thrust effect and by the new model which contains not only bottom thurst but side thrust effect. The values of the thrust predicted by conventional modelwere lower than measured values for both of the soil conditions and the three levels of grouser length. The maximum errors of conventional model were increased with the increase of grouser length. but the values of the total thrust predicted by the model developed in this study were well matched to the measured ones for both of the soil conditions and the three levels of grouser lengths.

• Proceedings of the Korean Society for Agricultural Machinery Conference
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• 1999.12a
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• pp.107-114
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• 1999

• Vending industry
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• v.10 no.2 s.31
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• pp.52-55
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• 2011

흔희 일본을 자판기 천국이라 말하지만 더 정확이 말하면 청량음료자판기 천국이다. 캔이나 PET 병 등 다양한 용기의 청량음료를 판매하는 자판기가 무려 260만대 설치되어 있다. 이토록 많은 청량음료 자판기가 설치되어 있다 보니 사회적인 책임도 크다. 자판기의 편리성, 환경, 치안, 도난 방지 등에 있어 사회를 위해 반드시 수행해야 기능들이 있다. 이 기능들을 개별업체에 맡겨 놓기에는 무리가 있다. 기업은 아래도 영리를 중시하는 경향이 있다 보니 사회적 책임에 관계된 일은 단체에서 진행을 해야 구속력과 추진력이 생긴다. 그래서 일본에는 청량음료자판기협의회가 있다. 일본자판기 관련 4개 단체(일본자동판매기공업회, 전국청량음료공업회, 일본자동판매협회, 일본자동판매기보안장비 협회)가 사회적 책임을 위해 공동 목표를 세우고 보조를 맞추어 나간다. 최근 이 단체의 활동은 자판기의 편리성 향상, 환경대응, 안심 안전한 거리 환경 조성에 맞추어져 있다. 그들이 지향하는 사회적 책임 활동 지켜보는 것은 의미가 크다. 우리 자판기 산업의 먼 장래도일본의 전례를 따라가지 않을 수 없는 상황이 될테니까. 자판기의 비중과 역할이 증대될수록 어느 시점에서는 반드시 사회적 책임이 동반되게 마련이다. 이런 측면에서 청료음료자판기협의회 활동을 소개한다. 국내 관련 업체들도 이제 자판기의 사회적 책임 강황에 관심을 가져야 할 시점이다.

• The Science & Technology
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• v.12 no.4 s.119
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• pp.29-39
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• 1979

과학화 운동의 대상은 학생층ㆍ일반시민ㆍ농어민등 사회와 연령의 계층별로 조직적으로 집중전개해야 한다. 이중 가장 주력해야할 대상은 초등료육과정의 청소년층이다. 전통적인 인습과 생활양식에 젖어온 기성세대에 비하면 이들은 과학환경과 여건만 조성해주면 과학을 생활화할 수 있는 세대로 성장할 수 있다. 이들을 위한 과학화사업은 교육사업의 일환으로 장기적인 안목에서 상당한 투자와 꾸준한 추진력등이 필요하다. 이러한 노력이 아무리 어렵고 많은 재정을 필요로 한다해도 그보다 더 가치있는 사업은 찾기어렵다. 과학적인 의식구조로 세련된 오늘의 국민학생들이 다음 세대의 주인공이 되어 가장 진취성있고 창의적인 국민으로 등장할 때 민족중흥의 대과업이 이루어 질것이다. 이것은 기성세대가 물려 줄 수 있는 가장 고귀한 귀산이라고 할 수 있을 것이다. 그러면 이들을 위한 올바른 과학화전개방안은 무엇이며 과학과 친근할 수 있는 기회를 어떻게 마련해 주어야 하는가를 고대 김시중교수ㆍ문교부 문찬고과학교육연구관 및 서울사대부속국민학교 김겸렬 교감(과학주임)ㆍ서울연가국민학교 송연휘 과학주임ㆍ홍사대부속국민학교 이종화 과학주임에게서 들어본다. <편집자주>

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.05a
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• pp.154-155
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• 2019

에어보트(Air boat)는, 선체 상부에 대형 프로펠러를 장착하고 이의 추진력으로 고속 주행하는 특수형태의 선박이다. 선체 밑바닥은 판옥선처럼 평평하고 매끈하기 때문에 장애물에 걸리지 않아 얕은 수면, 개펄, 빙상, 늪지수풀 등 일반선박이 가기 어려운 지역에도 갈 수 있어, 특히 인명구조용으로 많이 이용되고 있다. 그러나 평평한 선저 때문에 파랑이 있거나 측면 바람이 강한 지역에서는, 에어보트는 직진성을 잃어버리고 풍하로 밀리게 되며, 개펄이나 얼음위에서는 정지거리가 길어지는 단점을 가지고 있다. 이 연구에서는 에어보트 선저에 스키드를 장착하여 횡류방지는 물론 직진성을 개선하였으며, 해상 시운전을 통해 성능을 검증하였다.

• Journal of Convergence for Information Technology
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• v.9 no.6
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• pp.130-139
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• 2019

This study investigates the future world of The Perfect Society (1967), science fiction written by Yunsung Moon that was a very rare science fiction publication in the 1960s. In The Perfect society, the main character Woo Sungoo, who was chosen to survive in a sleeping capsule as a representative of $20^{th}-century$ human beings, wakes in the $22^{nd}$ century where only women remain. He experiences this female utopia and finds that this world still contains as much abnormal antipathy to the others and absolute autocracy as the 20th-century world he remembers even though the future people succeed in overcoming the past problems like famine and pollution. The author warns that science alone without humanistic insight in a unity-oriented society cannot settle the human's fate; rather, it only changes the aspects of human conflict.

• Journal of the Korean Society of Safety
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• v.11 no.4
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• pp.143-150
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• 1996

This is an explicit-Implicit, finite element analysis for linear as well as nonlinear hygrothermal stress problems. Additional features, such as moisture diffusion equation, crack element and virtual crack extension(VCE ) method for evaluating J-integral are implemented in this program. The Linear Elastic Fracture Mechanics(LEFM) Theory is employed to estimate the crack driving force under the transient condition for and existing crack. Pores in materials are assumed to be saturated with moisture in the liquid form at the room temperature, which may vaporize as the temperature increases. The vaporization effects on the crack driving force are also studied. The Ideal gas equation is employed to estimate the thermodynamic pressure due to vaporization at each time step after solving basic nodal values. A set of field equations governing the time dependent response of porous media are derived from balance laws based on the mixture theory Darcy's law Is assumed for the fluid flow through the porous media. Perzyna's viscoplastic model incorporating the Von-Mises yield criterion are implemented. The Green-Naghdi stress rate is used for the invariant of stress tensor under superposed rigid body motion. Isotropic elements are used for the spatial discretization and an iterative scheme based on the full newton-Raphson method is used for solving the nonlinear governing equations.

• Journal of Digital Convergence
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• v.12 no.6
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• pp.449-456
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• 2014

This study aims to contribute to our knowledge on gender role identity of middle-aged women within the Korean context. This research adapting Q methodology created a sampling distribution of P with 40 middle-aged women between 40-60 years old. We put each of 40 Q samples to become a forced distribution into 9 scales. And then we conducted a secondary analysis of the results from the principal component factor analysis by the PC QUANL program. Gender role identities of middle aged women were classified as four types: "affectionate-sensitive type", "affectionate-confident type", "assertive-confident type", and "sensitive-dominant type". Most of the middle-aged women in Korea tend to keep their original gender role identities. Some of women, however, experience the gender role identity change over time that their traits of traditional caring become more prominent than their affectionate character.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.17 no.1
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• pp.119-125
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• 2016

This study examined the running dynamic characteristics of a hybrid type wheel-rail high speed train, in which the propulsion method of maglev is applied. A wheel-rail high speed train propelled by a superconducting linear synchronous motor (SC-LSM) is expected to be superior to a maglev train regarding economical and interoperable aspects, still having powerful thrust force as maglev. In this paper, regarding the two methods of applying the SC-LSM to an existing wheel-rail train, to investigate the influences of SC-LSM propulsion on the dynamic characteristics of wheel-rail high speed train, the dynamic model of train including interaction between the rotor and stator of SC-LSM is established. Through the simulation using the model, the influence of the interaction between the rotor and stator of SC-LSM on stability, ride comfort and the effect of guideway irregularity are investigated.

• Cartoon and Animation Studies
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• s.32
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• pp.245-261
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• 2013

This paper analyzes films by director Tarsem Singh in relation to the theory of the sublime. The medium of film works in dimensions of both spectacle and narrative. Tarsem's strength mainly comes from spectacle. The visual style of Tarsem is unique and undeniably beautiful, but in a strange and magnificent way, rather than sweet and pleasant. If you accept the premises of Kant and Lyotard that the beautiful is a positive pleasure and the sublime is a negative pain, Tarsem's spectacle is certainly closer to the sublime than the beautiful. The Fall proves the director's ability in both spectacle and narrative. The spectacle of this film is so overwhelmingly huge, and vivid, it easily surpasses spectators' maximum capacity of imagination, which leaves the spectators in awe. Spectacle tends to hinder thinking thus obstruct the flow of narrative, but at the same time it blocks rational suspicion about the narrative. The spectacle of the Fall works as the power to immerse the spectators into the internal logic of the film. Since the spectators are deeply moved by the spectacle, they willingly follow the narrative of the film, the tragic adventure of the heroes which again gives the audience deep catharsis.