• Transactions of the Korean Society of Automotive Engineers
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• v.4 no.2
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• pp.158-165
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• 1996

The knowledge of air flow in an engine room has become more and more important in recent car design. The fluid flow in the engine compartment was investigated by numerical analysis. Due to the complex geometry of the engine compartment, mesh generation is a time-consuming job. In this research, the "ICEM" code was used to generate meshes by the Cartesian mesh model. The Reynolds-averaged Navier Stokes equations, together with the porous flow model for radiator and condenser, were solved. Computation was performed for the steady, incompressible, and high speed viscous flow, adopting the standard K-ε turbulence model. The "STAR-CD" code was used as a solver. The effect of car front openning area on the flow in engine room was also investigated.

• Transactions of the Korean hydrogen and new energy society
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• v.20 no.5
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• pp.371-377
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• 2009

Backfire characteristics for hydrogen fueled free piston engine with uni-flow scavenging is investigated with different stroke, exhaust vlave openning timing and fuel-air equivalence ratio by using RICEM (Rapid Intake Compression Expansion Machine) for combustion research of free piston engine. As results, it is found that backfire can be occurred due to slow combustion of unhomogeneous mixture in the piston crevice volume or/and in the cylinder near piston head. And the more stroke of free piston H2 engine with uni-flow scavenging is short the more opening timing of exhaust valve have to be advanced to control backfire.

• Journal of the Korean Society of Costume
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• v.34
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• pp.5-17
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• 1997

The porpose of this study was to know what kinds of clothes the elderly women preferred to wear according to their ages and body type and to pro-vide basic data for clothing design of the elderly women. Anthropometric analysis and questionnaire study wear done on 230 elderly women over sixty years, For analysis of the data One-way ANOVA and Chi-square were employed. The results of this study were as fol-lows: 1) The elderly women have a prefer-ance fore 'Front openning style' and 'Two-opiece style' which are easy to wear and prefer skirts to pants. 2) Their preference for clothes is de-pendent on their age rather than their body type. 3) The age is the decisive factor on blouse collar design neckline style sleeve ending skirt length location of zippe and waist band style when the select the clothes. 4) The body type is the decisive fa-ctor on jacket style skirt length and waist band style.

• Journal of the Korean Society for Library and Information Science
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• v.27
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• pp.365-390
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• 1994

The article sets forth a problem on international exchange and cooperation In the field of library and information science in the People's Republic of China from engles of academic and publication's exchange, It points out international exchange and cooperation between China and Korea should be developed from international exchange of publications and interlibrary loan to openning up standard, authority and current database on publications step by step. China and Korea should supply the database to all of the world, In order to come up to shared resources, the author has compared the Descriptive Cataloguing Rules for Western Language Materials, and the Bibliographical Description for Monographes with the Korean Cataloguing Rules for Description, and analyzed their different. In the end, the article presents the result that the documentation standardzation is the only way of accomplishing shared resources in the world from indentity of description for publications and materials, and unity of cataloguing rules.

• Journal of the Korean housing association
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• v.9 no.1
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• pp.1-9
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• 1998

This paper is the continuation of the fomer researching "A Study on the Higher-Class houses in Moon-Kyeung Region." and "A Study on the Higher-Class house in Young-Duk area." The study was made to examine the administrative districts in Kyeung Sang Buk Do Province, Korea. This study was aimed to investigate how the houses very according to natural factors including geography and climate. The conclusion is the following: 1) The □-type (A Court House) in the block plan of housing is composed mostly. 2) The □-type (A Winge-House) in the floor plan of housing is more composed than the pure □-type. 3) L-type of the inner space(women's space) is mostly characterized in the floor type and in the type of span-dividision, one and half(1½) spaned house is superior. 4) The majority of the floor plan of the inner space is characterized of the possessing the openning half(½)-spaned room and inner storage room. 5) The cornet-flooring room of outer space(man's space) is charaterized mostly in the floor type.

• Journal of Oriental Neuropsychiatry
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• v.2 no.1
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• pp.19-28
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• 1991

내의원(內醫院)은 병원과 약국을 겸비한 일종의 궁중의료기관으로 의사를 비롯하여 여러의원들이 임금과 왕비 및 왕자들의 약을 조제하여 달이던 곳으로, 일명 내국(內局) 또는 약원(藥院)이라고 내의원 앞에 예시되어 있다. 그러나 내의원은 현재 그 내용이 전해지지 않고, 단지 관광지의 유물로만 여겨지고 있다. 현재의 내의원은 창덕궁(昌德宮)에 위치하고 있다. 내의원은 창덕궁의 돈화문(敦化門)을 지나, 인정전(仁政殿)을 거쳐 희정당(熙政當) 좌측에 있으며, 왕비의 거처인 대조전에 가장 가까이 자리잡고 있다. 내의원은 조선왕조 세종25년(1443)에 개원하게 되었으니, 이때는 정치, 문화적으로 안정이 이루어져 가는 상황이었다. 또한 당시 왕이나 왕비 기타 왕족들의 여러 가지 정신적인 갈등으로 인한 질병이 많았으며, 이로인해 전문적이고 독립적인 왕실의료기관의 필요성에 의해 내의원이 독립적인 개원이 이루어졌으리라 사료된다. 이로인하여 저자가 내의원에 관한 자료조사와 실제답사를 통하여 다음과 같은 사실을 알수 있었다. 1) 내의원의 개원은 조선왕조 초기 중앙의료질서 성립을 통한 봉건왕조의 절대왕권확립을 의미함으로 사료된다. 2) 내의원의 위치가 창덕궁의 중심부에 위치하고, 특히 어전(御殿)과 내전(內殿) 가까이에 위치함은 왕실의 질병을 신속하고도 중요하게 다루기 위함으로 사료된다. 3) 특히 의인을 내전에서도 대조전(大造殿) 가까히 둔것은 왕실의 질병중 왕비의 정신신체질환의 치료를 위함으로 사료된다. 4) 내의원의 진료형태는 왕진(往診)이었으며, 이는 당시 의원신분이 중인층이었음으로 사료된다. 5) 내의원의 이용중에서 평민에게는 왕명에 의해서만 이루어졌음으로 사료된다.

• Explosives and Blasting
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• v.13 no.4
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• pp.5-27
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• 1995

Korea-America tungsten treaty is not only Earnning Us Dollar but also it was turnning point of tunnelling technology development such as a burn cut. Because 10th of specialist worked at Sangdong mine under treaty. The first of all, Experimental blasting pattern for single free face carried out. As a result it has brought the burden and $charge/m^3$ and also space distance. After the center holes are blasted. Remain of the works was the implementation of bench cut against the openning to make the full sectional are required. $Ca=\frac{A}{SW}$ where as A =ndi=m activated area S = Peripheral length of Charged room Ca = Rock Coefficient di=Holes diameter Later in 1980, The Oynaite Explosive is Replaced into Emulsion & Milli-Second Delay Electric Cap. Seqential Blasting machine were Applied in the Site. The Subway Tunnelling have been worked so Carefully for Vibration and Noise to near Shopping and housing area. We carried out Empirical formula to solve city Envoirement pollution as follow For Granite: $V=KW^{0.57}D^{-1.75}$ For Granite : $V=KW^{0.5}D^{-1.5}$ V=PPV(cm/sec) K=Coefficency D=Distance(m) W=Amount of power/delay(kg)

• Journal of the Korean institute of surface engineering
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• v.48 no.6
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• pp.335-342
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• 2015

Recently, the production of oil and gas at the arctic ocean and offshore has been growing. Accordingly, S500 steel with the high tensile strength and excellent toughness has been used and flux cored wire that can be welded to the S500 has been required. In this study, we carried out observation of microstructures, mechanical properties and CTOD (crack tip openning displacement) in the weld zone that GMA (gas metal arc) welded with different component of $TiO_2$ flux core wire (the main components, rutile or Ti-slag) for S500 steel. Weld zone produced with Ti-slag flux cored wire has formed a enough acicular ferrite and shown excellent impact toughness at $-40^{\circ}C$, tensile strength at room temperature and CTOD at $-20^{\circ}C$. As a result, the developed flux cored wire was suitable for S500 steel.

• Journal of the Society of Disaster Information
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• v.16 no.3
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• pp.472-478
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• 2020

Purpose: The purpose of the study is to help economic and safe construction by accurately predicting the initial strength of high-strength concrete (70MPa) for each type of cement, securing reliability of concrete quality, and drawing accurately the timing of form deformed, tensioning time of PS concrete, and openning of traffic after road repair with maturity. Method: Calculate the maturity by measuring the hydration heat with cement type for each age, and measure the strength of concrete with age to predict the strength corresponding to the any maturity. Result: In estimating the time required for traffic opening in road repair, ASTM C1074 was theoretically estimated at 16.4 hours for high-strength concrete, but in this study, maturity was calculated at 307, 14.4 hours for OPC and maturity at 2700, 34 hours for LHPC and maturity 200, 8 hours for ESPC. Conclusion: The timing of form deformed of structures using high-strength concrete and the opening of traffic of road repair may be much faster than in the case of concrete using OPC below the design basis strength 40MPa applied by ACI Committee 347.

• Journal of the Korean Society of Safety
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• v.31 no.2
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• pp.70-75
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• 2016

Recently, coastal erosion has been widely in progress and the erosion level becomes also serious in the world wide, espeically in East Sea in Korea. Since it would threaten the life, economics and security risk, it is necessary to much comprehend the reason why coastal erosion has occurred according to the geographical characteristics. Meanwhile, analysis about hydrodynamics of the solitary wave such as tunami in swash zone is needed for the best management practice of coastal erosion. Solitary wave is nonlinear wave and can be reproduced in the laboratoy scale by openning suddenly a sluice gate with water head difference, of which methodology was found in the literature, since it could be simply determined by a significant wave height. Thus, in this sutdy the generation of solitary wave was experimentalized using the sluice gate. Experimental conditions were classified by angles of a beach slope, a water level in a beach slope and a difference of water level between in a headtank and a channel bed. Two kinds of dimensionless analyses based from experimental results in this study were presented; the first analysis indicates nondimensionalization between the wave height and the water level in a beach slope in order to investigate characteristics of solitary wave approaching the beach. The second shows the other nondimensionalization between dynamic pressure and static pressure on a beach slope to investigate the relationship between wave breaking and wave pressure. Under the same conditions as laboratory experiments, the numerical results computed with a SWAN model embedded in FLOW 3D were compared in terms of wave height, and pressure on the beach slope, which shows good agreement with each other. Overall results from this study could provide fundamental hydraulic data for the reliabile verification of numerical simulation results about coastal erosion in swash zone caused by solitary waves.