• 한국주거학회논문집
• /
• 제12권4호
• /
• pp.115-122
• /
• 2001

The purpose of this research is to analyze the survey of the residential and commercial user consciousness of 4 cases(DB, YM, TP, HG) to propose directions of development of the mixed-use apartments in Daegu. The results of the survey are as follows; 1) The residential users of DG, YM, TP and the commercial users of DG, TP, HG were not satisfied with generally present situation. 2) It showed that the development factors of the satisfaction, the reason of the move, the difficulty to operate the business, the possible use of Mixed-Use Development, the using system of the main entrance, and the reasonable residential size were the statistical significance level(p<0.05). Finally, this study proposes that 4 Cases with the diverse physical and social environment must be different with the approach, and that the reasonable residential space program, size planning for commercial unit, and choices of what kind of business should be discussed before Mixed-Use Development regarding needs of region.

• Journal of the Optical Society of Korea
• /
• 제15권1호
• /
• pp.22-29
• /
• 2011

We analyze aberrations in an optical laser printer system in order to know how to determine an allowable non-uniformity of the movement of a light spot, how to determine allowed variation of spot sizes, and how to minimize the influence of these deviations on technological errors. In this paper, the correction and the tolerance of distortion are analyzed by using the concept of zonal and global distortions. The tolerance of field curvature is also obtained from Gaussian beam properties. In order to reduce the change of the entrance pupil position and to make a more compact laser printer system the minimum size of the rotator is exactly derived from the geometry with the introduction of the shift angle of the input beam.

• 수산해양기술연구
• /
• 제54권1호
• /
• pp.12-24
• /
• 2018

This study was conducted in order to improve opening efficiency of the miniaturized large-scale net for anchovy boat seine gear to reduce the fleet size. Field experiments were performed to observe geometry of nets by catcher boats. When the distances between the two ships were 150, 300 and 450 m, and the speeds of towing nets were 0.6, 0.9, and 1.2 k't, respectively. The vertical opening and actual opening of each part of the miniaturized large-scale net was as follows: the front part of the wing net, 8.7-13.3 m, 51-78%; the middle part of the wing net, 28.1-34.2 m, 55-67%; the entrance of the inside wing net, 31.3-38.5 m, 60-73%; the square and bosom, 22.7-29.6 m, 47-62%; the entrance of the body net, 20.9-26.4 m, 42-52%; the entrance of the bag net, 17.2-21 m, 72-89%; the flapper, 13.2-15.3 m, 78-83%; and the end of the bag net, 13.2-15.7 m, 72-75%. By connecting the net pendants with the front part of the wing net, the opening of the front part of the wing net was significantly improved compared to the traditional gear, which ensured both the wing net and the inside wing net with a normal net height. This, in turn, increased the efficiency of herding. The height of the body and bag nets was also higher than that of the tradition gear. In particular, the body net attached to the gear significantly improved the pocket shape of the gear and reduced the number of fish that were caught and escaped from the bag net, which increased the rate of fishing. The tension of towing nets was measured approximately between 2,958 and 7,110 kg, which indicates that the fleet can tow nets with 350 ps, the standard engine horse power. The fishing operation time was shortened compared with of the existent net, and the large-scale buoy attachment operation was also possible to operate the ship without fish detecting boat.

• 수산해양기술연구
• /
• 제55권1호
• /
• pp.7-19
• /
• 2019

This study was conducted in order to improve opening efficiency of the miniaturized small-scale net for anchovy boat seine gear to reduce the fleet size. Field experiment was performed to observe geometry of nets by catcher boats. When the distance between the two ships was 150, 300 and 450 m and the speed of towing nets was 0.6, 0.9, and 1.2 kt, the vertical opening and actual opening of each part of the miniaturized small-scale net was as follows: the front part of the wing net, 6.8-9.5 m, 45-63%; the middle part of the wing net, 16.1-30.7 m, 34-65%; the entrance of the inside wing net, 21.6-41.2 m, 44-84%; the square and bosom, 17.4-34.0 m, 38-75%; the entrance of the body net, 16.5-29.4 m, 36-64%; the entrance of the bag net, 14.5-21.9 m, 70-106%; the flapper, 6.7-7.7 m, 81-83%, and the end of the bag net, 8.6-10.9 m, 64-81%. The tension of towing nets was measured to be 2,734-6,812 kg approximately, which indicates that the fleet can tow nets with 350 hp, the standard engine horse power. The fishing operation time was shortened comparing to existent net with the large-scale buoy attachment operation. It was also possible to operate the ship without fish detecting boat.

• 수산해양기술연구
• /
• 제19권2호
• /
• pp.85-91
• /
• 1983

원통 및 직육면체 등의 단순한 모형함정과 모형통발, 재료의 종류와 입구의 형태, 입국의 경사각도에 따른 입롱과 도피행동 및 미끼의 냄새에 유집되는 행동 등에 대한 태평줄생우의 선택행동을 수조에서 관찰하여 비교한 결과는 다음과 같다. 1. 망지재료가 P. A, P. E 및 면인 경우 새우의 입롱수는 차이가 거의 없었으며, 삼각형, 사각형의 입구단면보다는 원형에 더 많이 들어 갔고 입구의 경사가 클수록 들어가는 미수가 적었다. 2. 모형함정의 입구경사가 0$^{\circ}$, 90$^{\circ}$일 때부다 30$^{\circ}$, 60$^{\circ}$일 때가 시간의 경과에 따른 새우의 도피율이 낮았으며, 직육면체의 평면입구일 때보다는 원통의 원추형 입구일 때 도피율이 적었다. 3. 미끼의 축출용액에 모여드는 새우의 수는 전갱이와 바지락, 새우와 고등어, 고등어육과 내장 등 간에는 차이가 거의 없으나 고등어와 멸치젓, 족발과 새우간에는 각각 고등어와 새우 육에 더 많이 모여들었다. 4. 먹이가 들어 있는 모형통발에는 없을 때의 3배 정도 입롱수가 많았고, 미끼가 없을 경우 입구의 수가 1개와 2개일 때는 입롱수에 차이가 거의 없으나 도피수는 2개일때가 훨씬 많았다.

• 수산해양기술연구
• /
• 제22권4호
• /
• pp.61-70
• /
• 1986

In accordance with a rapid growth of demani on aquatic animals, researches of the unused fishery resources On the deep sea b~d in the Korean Waters has been and will be required. The authors carried out a series of fishing experiments to investigate the available resources and to find the effective fishing method on the deep sea bed of the Korean East Sea. In the experiments, 19 kinds of traps which are different from each other in shape, mesh size and entrance diameter were used. The fishing experiments w~r;; carried out in four areas of 20Dm, 600.'11, 800m and 1000.'11 deep respectively, by the Pusan 402 (30:) GT) and the Pusan 403 (279GT), the training ships of National Fisheries University of Pusan, during August, 1986. The catc~ were analyzed with the size, the depth and the construction of traps. The results obtained can be summarized as follows: 1. Main species of the catch w~re pink shrimp, Pandalus bolelis, a kind of welks, Buccimum striatissimum and a kind of larg~ crabs. Chiono8cetes japonicus and the another species were few. 2. The CPUE value (expressed by the number of catch per trap in this paper) of pink shrimp was the highest in the depth of 20J-n around, and the value in the depth of 600.'11 or more decreased gradually with an increase of the depth. But, the value of Buccimum straitissimum was much higher in the depth of 6:J:)!1I or more than that in the depth of 200m around. On the other hand, the value of Chion:Jecetes japonjcus was very low in general. 3. The iniividual body size of the catch differed with the depth. Pink shrimps caught in the depth of 200m around were smaller than those in the depth of 600.'11 or more. In contrast with this, Baccimum striatissim:t.m caught in the depth of 200m around were larger than those in the depth of 600.'11 or more. 4. Depending on the selection curve in Ishida's method for the mesh size of trap webbing, the carapace length of pink shrimp and the shell length of Buccimum striatissimum which are equivalent to 100% relative catching efficiency can be estimated about 3.5cm and 6.5cm or so respectively. 5. The number of catch of pink shrimp and Buccimum striatissimum by the 60.'1'1.'11 entrance diameter of trap were less than that by the 90mm, 120mm and 150mm, even thogh the diffierence am~r, g 9:Jmm, 120.'11.'11 and 150:1'.'11 are not so large.

• 대한조선학회논문집
• /
• 제35권2호
• /
• pp.1-7
• /
• 1998

중형 고속어업지도선의 선형개발에 관한 연구를 조선대학교 회류수조에서 수행하였다. 현재 운항중인 같은 크기의 15노트 급 선형을 모선(CU-015)으로 하여 모선의 선도를 20노트 항주에 적합하도록 길이를 연장하고 선형을 변경하였으며, 고속화에 따른 선수 쇄파를 최소화 할 수 있는 선수선형 개발 및 고마력 기관에 적합한 충분한 용적을 유지하며 저항추진 성능을 향상시킬 수 있는 U-형 선미형상의 개발을 주로 수행하였다. 모선의 선형수정에 많은 제약이 있었으나 결과적으로 도출된 개발선형은 상당한 조파저항 감소의 효과가 있었다.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 2004년도 추계학술대회 논문집
• /
• pp.590-595
• /
• 2004

The shape and size variations of the nanopatterns produced on a positive photoresist using a near-field scanning optical microscope(NSOM) are investigated with respect to the process variables. A cantilever type nanoprobe having a 100nm aperture at the apex of the pyramidal tip is used with the NSOM and a He-Cd laser at a wavelength of 442nm as the illumination source. Patterning characteristics are examined for different laser beam power at the entrance side of the aperture( $P_{in}$ ), scan speed of the piezo stage(V), repeated scanning over the same pattern, and operation modes of the NSOM(DC and AC modes). The pattern size remained almost the same for equal linear energy density. Pattern size decreased for lower laser beam power and greater scan speed, leading to a minimum pattern width of around 50nm at $P_{in}$ =1.2$\mu$W and V=12$\mu$m/. Direct writing of an arbitrary pattern with a line width of about 150nm was demonstrated to verify the feasibility of this technique for nanomask fabrication. Application on high-density data storage using azopolymer is discussed at the end.

• 한국화재소방학회논문지
• /
• 제30권4호
• /
• pp.14-19
• /
• 2016

재실자가 부속실로 피난할 때 부속실 송풍기가 작동하기 전 단계에서는 방화문 개방과 더불어 실내화재로 인한 풍속이 발생하고 화재로 인해 발생된 연소생성물이 부속실을 오염시켜 피난에 어려움을 가져올 수 있다. 스프링클러가 화재풍속에 미치는 영향을 확인하기 위하여 수치해석을 진행하였고 스프링클러의 유무와 분사되는 액적크기에 따른 화재풍속을 비교하였다. 해석은 실제 공동주택의 형상과 치수를 반영해서 진행하였다. 수치해석 결과, 스프링클러가 설치되었을 때 화재풍속이 감소된 것을 확인할 수 있었다. 또한, 액적이 작을수록 화재풍속이 작은 것을 확인할 수 있었다.

• 한국주거학회논문집
• /
• 제25권2호
• /
• pp.27-36
• /
• 2014

The revision of regulations for apartment unit design, which are concerning the area calculating criteria (revised in 1998) and use of balcony (revised in 2005), considerably have increased livable space of apartment unit. This paper aims to verify its effect to apartment unit plan in the aspect of number of rooms and size of each room. For this purpose, 60 and 85 $m^2$ sized apartment unit plans in Seoul Gangnam district have been analysed by construction period, and a conclusion is drawn out as following; (1) The revison of regulations in 1998 and 2005 increased livable space of 60 and 85 $m^2$ sized apartment about 16.4~20.6 $m^2$ area. (2) Bedrooms, living room, dining room and kitchen have no change in size in nominal sense, actually, they increase their size after the fact by converting balcony to livable space. (3) Bathroom, dress room and entrance space have been considerably increased in size, which is possible for available area added in place of wall footprint according to 1998 revision.