• 한국조경학회지
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• 제30권2호
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• pp.63-69
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• 2002

The Second Namsan Tunnel required renovation. The landscape design was conducted as part of the comprehensive programs for renovation. The landscape design covered site analysis, design development, a working drawing and a maintenance plan. In May of 2001, the Second Namsan Tunnel was renovated and reopened to traffic. The tunnel was recreated as a new type of tunnel with function and beauty. The entrance and retaining wall of the tunnel has public character. Users are greatly affected by the entrance and retaining walls along roads. The landscape architect had to find new materials and methods to improve the environment and to combine artwork with the entrance and walls of the tunnel. The surface of the tunnel entrance and retaining walls are artistically treated with ceramic tiles and paint. Various regional characteristics and cultural meaning are symbolically expressed. Or the tunnel entrance from the Joong-gu side, entitled "Glory of the Future", the hibiscus symbolizes the bright and glorious future of Korea. On the retaining walls, entitled "Hope", the promising Joong-gu is symbolized through image of Korean magpies, mountains, rocks, roses, winds and nature. As for the tunnel entrance from the Yongsan-gu side, entitled "Vivid Spirit", pine trees symbolize the Koreans′strong will and an enterprising spirit. On the retaining walls, entitled "Lively Motions", Yongsan-gu is symbolized through image of pigeons, mountains, rocks, roses, winds and clear skys. The entrance and retaining wall of the Second Namsan Tunnel, whose surfaces are treated with tiles and paint with artistic value, would create an atmosphere using large-scale wall paintings. In this artwork, users would perceive a unique sense of place through the symbolic images of the vertical planes of the tunnel.

• 한국통신학회논문지
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• 제38C권11호
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• pp.966-971
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• 2013

본 논문에서는 군 계급장 자체를 UHF RFID 태그로 개발하는 과정과, 그 태그를 사용하여 보안을 강화한 군 보안출입관리 시스템을 보여준다. 일반적으로 군보안 출입관리 지역에서 저주파 HF 대역의 RFID 태그가 붙어있는 신분증으로 보안을 점검 관리하고 있으나, 한 단계 보안강화를 위하여 계급장 자체를 태그화 하여서 신분증과 계급장의 태그를 인식함으로서 강화된 보안 체계가 갖추어진 출입관리시스템을 구축 하였다. 개발된 태그는 모자나 어께에 붙일 수 있는 형태의 금속성 일반 계급장 자체를 모델화하여서 UHF RFID 태그로 설계 하였다. 군 보안출입관리시스템은 개발된 태그를 사용하여 출입자의 성명, 계급, 주소지 등을 관리 할 수 있으며, 출입한 날짜와 시간을 계속적으로 누적 관리 할 수 있어서 어느 군인이 언제 보안지역을 출입을 했었는지 과거 내역 조회가 가능하다.

• Safety and Health at Work
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• 제8권2호
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• pp.151-155
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• 2017

Background: At the entrance of a tunnel, reflection of sunlight from the surrounding environment and a lack of adequate lighting usually cause some vision problems. The purpose of this study was to perform a safety evaluation of lighting on a very long road in Ilam, Iran. Methods: The average luminance was measured using a luminance meter (model S3; Hagner, Solna, Sweden). A camera (model 108, 35-mm single-lens reflex; Yashica, Nagano, Japan) was used to take photographs of the safe stopping distance from the tunnel entrance. Equivalent luminance was determined according to the Holliday polar diagram. Results: Considering the average luminance at the tunnel entrance ($116.7cd/m^2$) and using Adrian's equation, the safe level of lighting at the entrance of the tunnel was determined to be 0.7. Conclusion: A comparison between the results of the safe levels of lighting at the entrance of the tunnel and the De Boer scale showed that the phenomenon of black holes is created at the tunnel entrance. This may lead to a misadaptation of the drivers' eyes to the change in luminance level at the entrance of the tunnel, thereby increasing the risk of road accidents in this zone.

• 한국콘텐츠학회논문지
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• 제12권6호
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• pp.346-352
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• 2012

성인과 달리 영 유아에게 행해지는 방사선 검사 시 투여되는 방사선량의 평가는 활발하게 이루어지지 않고 있다. 따라서 영 유아의 방사선 검사 시 피폭되는 정도를 나타내는 지표로서 입사피부선량을 측정하고 Geant4를 이용한 몬테카를로 시뮬레이션을 통한 결과값을 비교하여 입사피부선량 측정의 재현성을 높이고 다양한 지오메트리 구현의 가능성을 증명하였다. 몬테카를로 시뮬레이션 결과값은 입사피부선량을 선량보정을 위한 정규인자를 통해 추정하였고 단위 X선 조사영역크기로 표준화한 결과 영 유아에게 있어 일회의 방사선 촬영 당 평균 입사피부선량은 $78.41{\mu}Gy$ 였으며 선량계를 통한 측정값과 몬테카를로 시뮬레이션값의 백분율 오차는 최대 -4.77%로 나타났다. 몬테카를로 시뮬레이션을 통한 입사피부선량 평가 방법은 의료기관에서 실제 진단을 위해 내원한 환아를 대상으로 한 입사피부선량 평가의 어려움을 대체할만한 수단으로서의 가능성을 보여준다.

• 설비공학논문집
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• 제19권1호
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• pp.51-59
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• 2007

The waste bunker usually consists of waste entrance zone and waste pit. In this paper, the distributions of air flow, $NH_3$ concentration and $H_2S$ concentration in a waste bunker were investigated to prevent an odor generated in a waste pit from dispersing to the waste entrance zone by numerical method. Four cases were considered such that 1) the waste incinerators is operated, 2) the waste incinerators is stopped, 3) the waste incinerator is operated and the direction of a supply diffuser is $45^{\circ}$ upward, 4) the waste incinerator is stopped and the direction of a supply diffuser is $45^{\circ}$ upward. In case of 1), the fresh air from the waste entrance zone is exhausted smoothly to the main exhaust grill of the waste pit. It means that an odor dispersion to the waste entrance zone will not occur. However in case of 2), the induction of fresh air is so small and the supply air with an odor in waste pit can flow to the waste entrance zone. Therefore, an odor will be dispersed to the waste entrance zone. This paper shows the solution that the supply diffuser with the direction of $45^{\circ}$ upward is chosen. As a result in case of 3) and 4), an odor dispersion to the waste entrance zone does not occurred and on odor is exhausted smoothly to the auxiliary exhaust grill.

• 대한간호
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• 제10권1호통권51호
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• pp.25-37
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• 1971

Relationship between Various Characteristics & Attitudes of Nursing Students beofre Entrance and Attitudes toward Nursing Profession after Entrance of Seoul National University. The main purpose of this study is to determine whether there are significant

• 약학회지
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• 제58권4호
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• pp.250-254
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• 2014

Background: A new admission procedure was introduced to Korea when Doctor of Pharmacy (Pharm. D.) program was first established in 2011. In the new procedure, applicants are reviewed based on quantitative qualifications, which include Pharmacy Education Eligibility Test (PEET) scores, Test of English for International Communication (TOEIC) scores, and grade point average (GPA), as well as qualitative qualifications such as essay writing, extracurricular activities including volunteer experiences. Purpose: This study aimed to find relationships between entrance qualifications and academic performance of pharmacy students. Method: Entrance qualifications and academic performance of 164 first-year students were analyzed from 2011 to 2013 at Catholic University of Daegu. Other characteristics such as age and gender were also considered in the study. Results: Only GPA and TOEIC scores showed positive Pearson correlation with academic performance, while PEET scores did not. Conclusion: GPA and TOEIC scores could potentially have predictive validity for academic performance in pharmacy school. PEET scores, however, should simply be considered as pre-entrance qualifications, without predictive validity for academic performance.

• 한국생활과학회지
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• 제19권4호
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• pp.589-599
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• 2010

When the Korean government announced the lowering of the school entrance age from 6 to 5 years in an effort to increase the fertility rate, one candidate for the Seoul mayor rode on the slogan, 'one dong, one public kindergarten'. This study attempted to show the introduction of a preschool class for six-year-olds being used as analternative to lowering school entrance age in Sweden. First, the current state of preschool class, the Early Childhood Education and Care, and the education system in Sweden were described. Next, the background for the introduction of the preschool classes was analyzed. Thirdly, the effects of preschool class were evaluated from the perspectives of 6 year-olds as well as the institutiona land social status of the ECEC. Results from this study imply not only that the lower school entrance age policy should be abolished but also preschool classes could be considered as an alternative.

• Journal of Advanced Marine Engineering and Technology
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• 제21권3호
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• pp.236-245
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• 1997

The flow characteristics of developing turbulent steady flow are investigated numerically and experimentally in the entrance region of a square duct ($40 mm{\times}40 mm$ and 4, 000 mm). The numerical anaysis are incorporated by finite- volume discretization with staggered grid system and SIMPLE algorithm. The numerical solution are compared with experimental results of mean velocity profiles, turbulence intensity and entrance length. For turbulent steady flow, the turbulent components in the velocity waveforms increase as the dimensionless transverse position approaches the wall. Thrbulence intensity increases as the dimensionless transverse position increases from the center to the wall of the duct for the developing turbulent steady flows. The entrance length of the turbulent steady flow is about 40 times as large as the hydraulic diameter under the present experimental condition.

• 대한기계학회논문집
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• 제5권4호
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• pp.284-292
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• 1981

The flow of fluid with low prandtl number in the entrance region of a circular pipe has been considered, where the wall temperature is maintained to be constant. A finite difference method is used for the integral form of the governing equations in order that they satisfy the conservative properties of the numerical solutions. It is confirmed that the hydrodynamic entrance length and be divided into growing boundary layer region and fully viscous region, which is compared with existing results obtained by using boundary layer approximations. By assuning the developing velocity profile in the entrance region, the thermal entrance length is estimated and the local Nusselt number is obtained at various locations along the axial dirction.