• Title/Summary/Keyword: entrance

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Flow Field and Exhaust Gas Recrirculation around a Tunnel Entrance and Exit (터널 입출구 주위의 유동장과 배기가스 재순환)

  • 서용권;이창우;최윤환
    • Tunnel and Underground Space
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    • v.6 no.3
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    • pp.245-249
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    • 1996
  • In this study, the flow field and the recirculation phenomena are investigated numerically for the model around a tunnel entrance and exit. It turns out that the air entering to the tunnel entrance comes mostly from the upper region of the entrance implying that maintaining the air clear in that region is important for the inside-tunnel ventilation. We also found that the recirculation of the exhaust gas from the exit to the entrance has a maximum effect when the flow velocity at the exit is somewhat lower than that of the entrance.

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Research of Port entrance and exit Application form and entrance and exit symptoms issuing business standardization (항만출입 신청서식 및 출입증 발급업무 표준화에 관한 연구)

  • Choi, Sung-Pill;Choi, Hyung-Rim;Shin, Joong-Jo;Jeon, Yong-Sik;Kim, Hee-Yoon
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2009.10a
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    • pp.175-176
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    • 2009
  • Existing Port entrance and exit application form and entrance and exit evaporation class business apply, investigation, has the process whim issuing is common, the application form whim is standardized and issuing business are not constructed at each port and the pier by not to be, the user confusion is increasing. In order to solve like this problem, investigation analysis leads about port entrance and exit application form and entrance and exit evaporation class business of the existing personnel and the vehicle and is standard about port entrance and exit application form and entrance and exit evaporation class business to present and under relating trillion letting the process whim is efficient under providing boil.

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Developement of a RFID Enterance Control System for Biosecurity of Pig Farm (RFID 이용 돈사 출입 자동관리 시스템 개발)

  • Kim, Hyuck-Joo;Jun, Hyung-Soon;Yu, ByeongKee
    • The Journal of the Korea Contents Association
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    • v.20 no.3
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    • pp.31-40
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    • 2020
  • As a result of reenforcement of livestock industry licensing and livestock related vehicle registration system, pig farm are mandatory for setting stop bar before pig farm entrance and maintaining the records of inlet and outlet to and from pig farm. Also, the first step to the pig farm biosecurity is the control of entrance human, vehicles, animals and the related records including entrance and sterilization. In this study, the pig farm entrance control system using RFID technology and web-server system was developed. For human entrance, contact type RFID reading system(13.56MHz) was developed. And the 900MHz RFID system was used to detect vehicle entrance. The test result shows that system actuating, recognition, saving records to the web server was successful. Then, the full system of human entrance recording unit, vehicle entrance recording unit, entrance control system, human sterilizing booth containing a tablet for inputting visitor's record and sterilization record was tested. The records were wrote to web server DB through the data management web-program. Performance test shows the entrance control and data management in server was successfully operated.

Housing Identity Expressed on Entrance Features in Single Detached Houses (단독 주택의 진입 외관에 나타난 주거 아이텐티티)

  • 박선희
    • Korean Journal of Human Ecology
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    • v.3 no.2
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    • pp.39-46
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    • 2000
  • This research was to identify housing identity expressed on entrance features In Korean single detached houses. The data were collected from field study and content analysis method of 45 houses in Chonju city. The methods of observation, of measuring the size, of sketching. and of Photos of entrance feature in the single detached houses were used for this study. Results of this study were as follows. First. the height and the form both of main gate and of wall tended to be closed. In particular. the size of main gate tended to be shown off rather than having practical funtion. whereas the form of main gate were semi-opened and thus could not guaranteed privacy of the residents very well. Second, 53.3% of the direction of main entrance were found to be at right-an91e0 with main gate, which reflected the control needs of private life. Third. the balance of main gate and exterior was homogeneous, which expressed the increase of aethetic concern of exterior Finally. most of entrance approach were made of stones and bricks. This result indicated that the practical funtion of entrance approach was emphasized the emotional environment was not considered in building the entrance approach.

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Drag Reducton of Pipe Wall For Fluid Flow due to Injected Polymer Solution - III. Consideration of Entrance Region Flow of Drag Reducing Fluids- (고분자용액에 의한 유체수송관벽의 저항감소 -III. 저항감소유체의 입구흐름 영역에 대한 고찰-)

  • 김영보;유경옥
    • Fire Science and Engineering
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    • v.5 no.2
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    • pp.21-35
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    • 1991
  • As a part of studies of drag reduction phenomenon, at the entrance flow region of abrupt contraction tube flowing water, dilute and concentrated drag reducing polymer solutions contraction losses are estimated experimentally. Futher more, entrance lengths are considered theoretically and are measured experimentally. In the present experiment, fluid temperature is fixed l$0^{\circ}C$ and flow rates are 3,000

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Analysis on Landscape Characteristic of Entrance Spaces in the Apartment Complex - A case study of 'Award of Good Apartment to Living' in the Capital Region - (공동주택 아파트 진입부 경관특성 연구 - 수도권 '살기좋은 아파트 수상'단지를 중심으로 -)

  • Lee, Gyeong-Jin;Lee, Gi-Woo
    • KIEAE Journal
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    • v.8 no.6
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    • pp.47-55
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    • 2008
  • The purpose of this study is as follows. 1) An element to organize the landscape of an apartment entrance space and setting up, a characteristic of landscape through the actual condition analysis. 2) The characteristic of the type analysis and classified the shape of the entrance as the type. 3) The degree to like the landscape analysis through the making up question. The result of this research is as follows. The entrance of the apartment complex of 71 as of 92 and set an element to organize the landscape and the characteristic of landscape through the frequency analysis and divided an entrance landscape of apartment into 4 types through the cluster analysis. An entrance landscape of apartment types of the entrance is classified as follows. 1) Type I: A model wall-fence type, 2) Type II: The side constructing a building-fence type, 3) type III: The side constructing a building-retaining wall-mixing tree type, 4) type IV: The moulding constructing a building-a retaining wall type.

Residents' Recognition of House Entrance at Eoeun Village - The Case of Eoeun-Ri, Yiungcheon City - (어은리 주민들의 출입구에 대한 인식 -경북 영천시 금호읍 어은리의 사례-)

  • 이관희
    • Journal of the Korean Institute of Landscape Architecture
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    • v.29 no.5
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    • pp.37-42
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    • 2001
  • This research is related to house entrance recognition of residents, who have long kept the entrance without a closing door in Eoeun village, Geumho, Keongbook. The purpose of the research was to interpret the recognition of a house entrance in Eoeun village with the theories of cultural ecology. Final results suggest the belief for all the inhabitant\`s welfare through anthropological adaptation to habitat. The fish in the Geumho River had sought the shelter from the heavy rain in summer. The Eoeun forest at the entrance of the village provided good shelter for the fish. The Eoeun residents thought that the safe shelter fur the river fish is also semantic for the people. They believed that if the fish could not find shelter, i.e., the Eoeun forest and left, the village could be not safe for their life. Therefore, even the entrance of house should be structurely opened for the fish shelter in a symbolic sense. The entrance without a closing door has implied that their life should depend upon their natural environments because they have believed that till now there have been no considerable accidents in the village.

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Fishing capacity and bycatch on spring net pot for conger eel by entrance size (스프링그물통발의 입구 크기에 따른 붕장어 어획성능과 혼획)

  • SONG, Dae-Ho;CHO, Sam-Kwang;CHA, Bong-Jin
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.52 no.1
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    • pp.9-16
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    • 2016
  • This study was conducted to analyze fishing capacity and bycatch by mesh size and entrance size of spring net pot conducted by water tank and field experiment. The water tank experiments were conducted by using traps with mesh size of 22 mm and entrance size of 120 mm and 140 mm, respectively in the water tank of NIFS. The field experiment was conducted using 5 kinds of spring net pot with mesh sizes of 20 mm, 22 mm, 35 mm and entrance size of 120 mm, 130 mm, 140 mm, 360 mm by coastal trap fishery vessel operating around the area of Geoje island. In the result of water tank experiments, the catch of conger eel was 1.5 times higher when using trap with entrance size of 140 mm than that of 120 mm. In the field experiment, when using same mesh size, the larger the entrance size, the higher amount of conger eel catch, bycatch and number of bycatch species. When using the same entrance size, the larger the mesh size, the lower amount of conger eel catch and number of bycatch species, whereas the amount of bycatch showed increasing trend.

Feature Analysis for Seceders among New Students Passed the D University Entrance Examination

  • Choi, Seung-Bae;Kang, Chang-Wan;Cho, Jang-Sik
    • Journal of the Korean Data and Information Science Society
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    • v.19 no.4
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    • pp.1111-1122
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    • 2008
  • Recently, because of decreasing in population, most of local universities are competing to attract new students in the entrance examination. These situations cause that most of the examinee apply for several universities to matriculate in a university. So these problem may raise a serious trouble such as additional new students invited. Therefore, in this study, we consider a few statistical models by using data mining technique to understand the pattern of new students who discard registration(seceders) in spite of success in the D university entrance examination. To construct these models, we use entrance examination data of three years. On the basis for analysis results of entrance examination data, we look into the features for secession of new students who success in an university entrance examination. We provide a basic information to make a effective entrance plan for seceders in future. Also, we make a search for the trend based on three years by analyzing entrance examination data of 2006, 2007 and 2008 years.

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Thermal and Flow Analysis inside the Header of a Parallel Flow Heat Exchanger (평행류 열교환기의 헤더내 열유동 해석)

  • 이관수;오석진
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.12 no.9
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    • pp.802-809
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    • 2000
  • This study numerically analyzes the thermal and flow characteristics inside the header in PFHE(parallel-flow heat exchanger) by employing a three-dimensional turbulence modeling. The following quantities are examined by varying the injection angle of the working fluid, the location of entrance and the shape of entrance: flow nonuniformity, heat transfer rate, and flow distribution in each passage. The result shows that the degree of significance among the parameters affecting the header part is in the order of the injection angle, the shape of entrance, and the location of entrance. The result also indicates that heat transfer rates compared to the reference model are increased by about 152% for the angle of injection of -$20^{\circ}C$, by about 127% for the shape of entrance with right and left long rectangular form, and by about 108% for the location of entrance located at the lowest Position.

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