• Title/Summary/Keyword: Front

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Aerodynamic Characteristics for various front shapes of High Speed Train (고속열차의 선두부 형상에 따른 공력특성 변화)

  • Lee S. C.;Kim S. L.;Hur N.
    • 한국전산유체공학회:학술대회논문집
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    • 1995.10a
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    • pp.49-54
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    • 1995
  • A numerical analysis on the effect of the front shape on the aerodynamic characteristics of HST model is made, using FVM based general purpose 3D Navier-Stokes eq. solver, TURBO-3D program. Numerical solutions are compared with each case of different front shape for HST model. The result shows a good quantitative aerodynamic characteristic tendencies for variation of front shape of HST. Thus it may be used as a basis in the design of the shape of real HST.

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A Simple Model of the Formation of Thermo-haline Front in the Southeastern Yellow Sea in Winter

  • Seung, Young-Ho;Shin, Sang-Ik
    • Journal of the korean society of oceanography
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    • v.31 no.1
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    • pp.23-31
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    • 1996
  • The thermo-haline front frequently observed near the southwestern tip of Korean Peninsula is successfully modeled using a simple model. The front is formed by the wind-driven advection of local cooled water to the southern warm area which is kept warm by large heat advection of the Tsushima Current. The front thus locates north of the Tsushima Current which runs approximately along the isobaths in the east-west direction.

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A Study of Computer Simulation of Back-and-Forth Patrol

  • Hur, Seong-Pil
    • Journal of the military operations research society of Korea
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    • v.14 no.1
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    • pp.53-62
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    • 1988
  • A patroller is to protect a patrol area with a certain length front D by proceeding at constant speed on courses parallel to the patrol front, traveling back and forth between area boundaries and reversing course at each area boundary. Transitors enter the area uniformly distributed across the patrol front on a course perpendicular to the patrol front. Any transitor that closes the patroller to within his sweep radius R is detected. This paper use plane trigonometry to derive the theoretical probailities of detection and develop a Monte Carlo computer simulation Model.

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A Study of Computer Simulation of Back-and-Forth Patrol

  • Hur, Seong-Pil
    • Journal of the military operations research society of Korea
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    • v.13 no.2
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    • pp.53-62
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    • 1987
  • A patroller is to protect a patrol area with a certain length front D by proceeding at constant speed on courses parallel to the patrol front, traveling back and forth between area boundaries and reversing course at each area boundary. Transitors enter the area uniformly distributed across the patrol front on a course perpendicular to the patrol front. Any transitor that closes the patroller to within his sweep radius R is detected. This paper use plane trigonometry to derive the theoretical probailities of detection and develop a Monte Carlo computer simulation Model.

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ON THE $H^s_\omega$-WAVE FRONT SETS

  • Kang, Bu-Hyeon
    • Communications of the Korean Mathematical Society
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    • v.11 no.1
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    • pp.273-280
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    • 1996
  • In this paper we extend the concept of the Sobolev wave front set of a distribution to the one of the generalized Sobolev wave front set of a generalized distribution, and we investigate the relations among these concepts. Finally, we prove the local property of these sets.

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MyHome : Web Front Page Program Based on Internet Histories (MyHome : 인터넷 히스토리 기반 웹 front page 프로그램)

  • Ha, Hyeon-Jun;Kim, Min-Ju;Cho, Myeong-Jin
    • Proceedings of the Korea Information Processing Society Conference
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    • 2011.04a
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    • pp.1602-1603
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    • 2011
  • 사용자의 접속 빈도를 분석하여 즐겨 찾기 사이트를 구성하는 크롬의 Front Page는 매우 유용한 기능이나 해당 브라우저에서만 사용할 수 있다는 제약이 있다. 이에 본 논문에서는 웹 브라우저에 대한 제약을 받지 않고 사용자의 취향에 맞는 웹 브라우저에서 Front Page를 구성할 수 있는 MyHome에 대해 기술하고자 한다.

A study on the basic slacks pattern for middled aged women based on their lower body shape analysis (중년여성의 하반신 체형분류에 따른 슬랙스 원형 제작)

  • 정인향;함옥상
    • Proceedings of the ESK Conference
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    • 1997.10a
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    • pp.40-55
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    • 1997
  • The purpose of this study are to examine the characters of the lower half body shape in the middle aged women and to make slacks patttern on the base of four difference body shapes as follows. The lower half body shapes were classified into 4 types on the basis of their lateral view silhouette, whose characters were summarized as followings. (1) "Type 1" meant the right body shape with the standard protrusion of abdomen and hips. (2) "Type 2" showed the body shape with prominent hips, which had the flat abdominal silhouette and the greatly curved hips silhouette. (3) "Type 3" was the body shape with the prominent abdomen and the flat hips, in which the frontal view silhouette of the abdomen was greatly curved and the rear view silhouette of hips is less curved. (4) "Type 4" was characterized with prominent abdomen and hips. The slaks patterns were based on the lower half body shape characters and resulted in followings. (1) In the type 1, little difference from conventional patterns was seen in experiment pattern, in which the front waist girth was W/4{\times}0.5cm+0.5cm+fold(2.5cm) and the back waist girth W/4+0.5cm-0.5cm+dart(3.5cm). The front hip girth was defined as H/4+2.0cm+0.5cm and the back hip girth as H/4+2.0cm-0.5cm due to its increased ease amount produced by abdominal fat deposition. (2) In the type 2 experimental pattern, the front and back differences of the waist girth and the hip girth were defined as 1.0cm and 2.0cm separately. Accordingly, the front waist girth was W/4+0.5cm+ 1.0cm+fold(2.0cm), the back waist girth W/4+0.5cm-1.0cm+dart(6.5cm), the front hip girth H/4+2.0cm+1.0cm and the back hip girth H/4+2.0cm-1.0cm. (3) In type 3, the front waist girth was set up as W/4+0.5cm+0.5cm+fold (4.5cm) for the increased front fold amount and the back waist girth was W/4+0.5cm+0.5cm+dart(3.0cm). The front hip girth was made as H/4+2.5cm+0.5cm and the back hip girth H/4+2.5cm-0.5cm. (4) In type 4, considered were $\circled1$ the increased fornt fold amount due to the abdonimal protrusion, $\circled2$ the increased back dart amount and the decreased back dart length owing to the hips prominent and $\circled3$ the front and back differences of waist and hip girth for the lateral view silhouette. Therefore the front waist girth was defined as W/4+0.5cm+2.0cm+flod (5.0cm), the back waist girth as W/4+0.5cm-20.cm+dart(4.0cm), the front hip girth as H/4+2.0cm+1.0cm and the back hip girth as H/4+2.0cm-1.0cm. The sensory evaluation of appearance and comfort was appeared more suitable on the experiment pattern than on the conventional pattern.

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Distribution of Fish Larvae and the Front Structure of the Korea Strait in Summer (여름철 대한해협의 전선구조에 따른 자치어의 분포 특성)

  • Kim, Sung;Yoo, Jae-Myung
    • Korean Journal of Ichthyology
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    • v.11 no.1
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    • pp.72-85
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    • 1999
  • A study on the larval fish assemblage around the front area was conducted in the Korea Strait in August, 1993. The front was found in the shelf break located in $35{\sim}36^{\circ}N$. A total of 125 species were found in the study area. Of these Engraulis japonicus was the most dominant species comprising 84.3% of the total fish larvae collected and followed by Maurolicus muelleri accounting for 7.7%. Gobiidae, Callionymidae and Pomacentridae showed higher frequency of occurrence. These five species can be divided into three groups. First group was comprised in the larval fish species such as E. japonicus and Callionymidae which were found in the whole study area. The second group was comprised of Gobiidae and Pomacentridae which were found in the warm area located in the southern part of the front area. The other species was M. muelleri found in the cold area located in the northern part of the front area including the front area. The assemblage, geological distribution and body length composition of the fish larvae in the Korea Strait would be mainly determined by the spawning ecology of the fishes, and the geological distribution and structure of the front which is formed in the ocean boundary between the Tsushima Current and the East Sea Cold Water.

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The Analysis of Pattern Components of Brassiere and Study on Its Making (브래지어의 패턴 구성요소 분석 및 제작법 연구)

  • Lee, So-Young
    • Journal of the Korea Fashion and Costume Design Association
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    • v.15 no.2
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    • pp.15-26
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    • 2013
  • The purpose of this study is to offer basic data for designing and making of brassiere with the consideration of the physiological nature of man. Each of 3/4-cup wired upward-support-type Mold Bra of 75 size with basic pad made at three representative domestic companies (A, B and C Company) was selected for analysis of pattern and components. The following is the result of this study. 1. That Company A's bra had the highest cup, relatively narrow width, the widest front-center and the highest front center at front pad. That of Company B had relatively short wing over the base and much difference at the height of cup depending on the presence of wire. That of Company C had low and wide cup, the widest bust span and the front center width, the front center height of front pad, the base length of front pad and the length of wings were observed to be of the figures between those of Company A and B. 2. The Bra of Company A had the biggest front center angle of $6^{\circ}$, while that of Company C had the biggest wing angle of $18^{\circ}$. The Bra of Company B showed the biggest difference of patterns depending on the presence of wire. Those of Company A and C showed very similar shape when wire was inserted. 3. The order of making brassiere is following: making of exterior mold cup${\rightarrow}$ sewing exterior cup and circumference of mold${\rightarrow}$ sewing base and wings${\rightarrow}$ sewing binding tape to base${\rightarrow}$ sewing cup and main pad${\rightarrow}$ sewing binding tape to upper sides and upper part of wings${\rightarrow}$ sewing wire-tape to interior base of cup${\rightarrow}$ inserting of wire inside wire-tape${\rightarrow}$ sewing hook & eye on the back of wings${\rightarrow}$ sewing shoulder string.

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