• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.8
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• pp.1132-1141
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• 2004

The purpose of this research was to ascertain the optimum rear slit length of tight skirts in terms of comfort and appearance. The typical measurements of tight skirts on current market were recorded and a questionnaire survey of women in their twenties was conducted in order to find out the current conditions of the skirts and specific complaints about motion restrictions. Just over half the respondents (50.4%) reported that they had experienced damage to the slit usually when they were stepping on a bus and also walking and running. The clothing test showed that the slit length increased as the motion went from "walking" to "going up stairs", and to "stepping on a bus" In addition the slit length significantly decreased as the hem circumference of skirt became wider. On the basis of those results, a wearing test, evaluating sensual comfort and appearance, was also conducted and the results showed that the slit length of 385mm was most prefered.

• Journal of the Korean Society of Clothing and Textiles
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• v.17 no.4
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• pp.539-549
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• 1993

The purpose of this study was to find out the moving fitness and slit length of tight skirt in relation to its length & silhouette. Five kinds of length, micro mini, mini, natural line, medi and maxi, and two kinds of siihuette, slim & straight-a total of ten tight skirts-were investigated. Ten college students were chosen for this experiment. The moving fitness was tested by measuring the step length, step width and step angle in the case of walking on the flat and going up the stairway & bus stair. The slit length was tested by measuring the back slit length needed in the case of going up stairway & bus stair. Data were analyzed with use of SAS pakage. The statistics were based on average, standard diviation, two-way ANOVA, Pearson's correlation and multiple regression analysis. The main results were as follows. 1. There was significant difference in the moving fitness according to length & silhouette of tight skirt. The moving fitness of slim type was lower than that of straight type and the longer the skirt length was, the lower the moving fitness was. The significance appeared particularly in the case of going up the bus stair. 2. There was significant difference in the skirt length obove slit accorting to length & silhouette of tight skirt. The skirt length obove slit of slim type was shorter than that of straight type. The longer skirt length was, the longer it was from micro mini to natural line, that of medi skirt was shorter or a little longer than that of natural line skirt and there was little change from medi skirt to maxi skirt.

• Journal of the Optical Society of Korea
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• v.15 no.2
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• pp.196-201
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• 2011

Near-field properties of light emanated from a subwavelength double slit of finite length in a thin metal film, which is essential for understanding fundamental physical mechanisms for near-field optical beam manipulations and various potential nanophotonic device applications, is investigated by using a three-dimensional finite-difference time-domain method. Near-field intensity distribution along the propagation direction of light after passing through the slit has been obtained from the phase relation of transverse electric and magnetic fields and the wave impedance. It is found that the near field of emerged light from the both slits is evanescent, that is consistent with conventional surface plasmon localization near the metal surface. Due to the finite of the slit, the amplitude of this evanescent field does not monotonically approach to than of the infinite slit as the slit length increases, i.e. the near-field of the longer slit along the center line can be weaker than that of the shorter one.

• 제어로봇시스템학회:학술대회논문집
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• 2003.10a
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• pp.746-751
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• 2003

A method of measuring the length of defects on the wall of the spent nuclear fuel pool using the image processing and a laser slit beam is proposed. Since the defect monitoring camera is suspended by a crane and hinged to the crane hook, the camera viewing direction can not be adjusted to the orientation that is exactly perpendicular to the wall. Thus, the image taken by the camera, which is horizontally rotated along the axis of the camera supporting beam, is distorted and thus, the precise length can not be measured. In this paper, by using the LASER slit beam generator, the horizontally rotated angle of the camera is estimated. Once the angle is obtained, the distorted image can be easily reconstructed to the image normal to the wall. The estimation algorithm adopts a 3-dimensional coordinate transformation of the image plane where both the laser slit beam and the original image of the defects exist. The estimation equation is obtained by using the information of the beam projected on the wall and the parameters of this equation are experimentally obtained. With this algorithm, the original image of the defect taken at arbitrary rotated angle can be reconstructed to an image normal to the wall. From the result of a series of experiments, the accuracy of the defect is measured within 0.6 and 1.3 % error bound of real defect size in the air and underwater, respectively under 30 degree of the inclined angle of the laser slit beam generator. Also, the error increases as the inclined angle increases upto 60 degree. Over this angle, the defect length can not be measured since the defect image disappears. The proposed algorithm enables the accurate measurement of the defect length only by using a single camera and a laser slit beam.

• Journal of the Korean Society of Clothing and Textiles
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• v.16 no.4 s.44
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• pp.485-493
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• 1992

Three kinds of tight skirts, slim type, straight type, and semi-tight type were investigated to obtain necessary information about the size of the back slit. Fourteen college students put on these experimental clothes and walked on the flat floor, going up and down the stairs. The dimensions of the back slit were measured by width and length. The stride length was taken from the record of footprints of walking. The correlation between the body measurement, stride length and the size of the back slit was studied. As a result of this experiment, the findings are as follows: 1. The size of the back slits differed from each skirt type at the level of p<0.001. In the case of walking on the floor, the average dimension of the back slit was 14.0 cm long 5.0 cm wide for the slim type,9.5 cm long 2.8 cm wide for the straight type and 2.1 cm long 0.5 cm wide for the semi-tight type. 2. In the case of walking on the stairways, the average dimension of the back slit was 16.0 cm long 5.8 cm wide for the slim type, 12.4 cm long 3.9 cm wide for the straight type and 3.1 cm long 1.1 cm wide for the semi-tight type. 3. The correlation between the height (stature, waist height, knee height) and the size of back slit was 0.3 to 0.6. The correlation between the girth (waist, hip) and the size of back slit was 0.3 to -0.5. 4. The correlation between the stride length and the size of back slit was 0.76 for the slim skirt, 0.56 for the straight skirt, 0.28 for the semitight skirt.

• Journal of the Korean Institute of Landscape Architecture
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• v.37 no.3
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• pp.105-112
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• 2009

This study has attempted to facilitate various new technologies related to indoor containers and develop a desirable planting environment after investigating the growth (including root growth) of shade-tolerant landscape plants under slit processing, a natural indoor ventilation system. The following results were found: In terms of the shoot growth of Fatsia japonica in a slit container, no distinctive difference was observed in comparison with the control group. However, growth was good when the container 250mm tall or taller. Therefore, it was verified that optical soil depth is more important than slit processing in shoot growth of Fatsia japonica. In Fatsia japonica root length was observed as follows: Control 2(250mm) > Slit 2(250mm) > Control 1(195mm) > Slit 3(360mm) > Control 3(360mm) > Slit 1(195mm). The largest growth was observed in Control 2(250mm), which had no slit processing. In term of root width, this was lower than the initial value in all groups, which means that the root grew vertically, not horizontally. In terms of plant height of Ophiopogon japonicus, a gradual increase was observed in the control group that had no slit processing. No significant growth was detected in the slit system, however. In terms of shoot number, slit containers were generally higher than the control group. In terms of fresh and dry weights, on the contrary, slit containers were mostly lower than the control group. In Ophiopogon japonicus, root length was observed as follows: Slit 2(250mm) > Slit 1(195mm) > Control 2(250mm) > Control 3(360mm) > Slit 3(360mm) > Control 1(195mm). In Ardisia japonica, slit containers were mostly greater than control group in terms of plant height. The greatest plant height was observed at Slit 2(250mm) instead of Slit 1(195mm) and Slit 3(360mm). Except for plant height and shoot number, however, no significant shoot and root growth was observed. Root length was observed as follows: Slit 2(250mm) > Slit 3(360mm) > Control 3(360mm) > Slit 1(195mm) > Control 2(250mm) > Control 1(195mm). Therefore, root length in slit containers was mostly greater than in the control group. The width of root, however, declined in general.

• Journal of the Korean Home Economics Association
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• v.31 no.3
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• pp.175-186
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• 1993

The present study was designed to find out the construction conditions of tight skirt for sale in relation to its brand, target age and length. The 15 tight skirts each from 3 brand groups(designer character, national and minor brand) of 2 target age groups(youth and middle age) and the 15 tight skirts each from 3 skirt length groups(mini, natural line and maxi) of only the minor brand-a total of the 120 tight skirts on the market-were measured. The data were analyzed with use of SAS package. The statistics were based on frequency, percentage, average, standard deviation, one-way ANOVA, two-way ANOVA, Pearson's correlation and linear regression analysis. The main results were as follows. 1. There were significant differences in the construction conditions of tight skirt according to its brand and target age. There was a significant difference particurarly in the difference between hip girth and hem girth according to brand target age. The difference between hip girth and hem girth of designer's character brand skirt was larger than that of national brand & minor brand skirt, and that of skirt targeting the youth was larger than that of skirt targeting the middle aged. 2. There were significant difference particurarly in the differences in the construction conditions of tight skirt according to its length. There was a significant difference particurarly in the difference between hip girth and he girth according to skirt length, and that of maxi skirt was larger than that of mini & natural line skirt. There was a good correlation between skirt length and slit length and between skirt length and skirt length above the slit. The longer the skirt length was, the longer the slit length and the skirt length above the slit were.

• Journal of Korea Water Resources Association
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• v.46 no.4
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• pp.327-334
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• 2013

In this study, the optimal slit length of perforated wall with single chamber below the still water level (SWL) is studied through the two dimensional test. The relationship between the reflection coefficient and the shape of structures such as chamber width(B) and slit length(S) are investigated by applying the various wave conditions. The random waves were used for the test by using Bretschneider-Mitsuyasu frequency spectrum. Minimum reflection coefficient is obtained at $B/L_s{\approx}0.15$ condition, this result is different from the regular wave condition. Also the minimum reflection coefficients are measured at $S/H_s{\approx}2.5$. This means that the optimal slit length below the still water level is 2.5 times of the incident wave height.

• 한국연소학회:학술대회논문집
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• 2005.10a
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• pp.314-319
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• 2005

In this study, the combustion characteristics were investigated with the variation of design factors on multiple slit gas burner. The design factors consist of slit height, width, spacing, and inner length. The combustion characteristics were made analysis of the CO emission and NOx emission by using CO analyzer and NOx analyzer. The lower perimeter to area and the narrow spacing extends the lift-flame limit. The CO emission increases with the increasing perimeter to area ratio at the same condition. The NOx emission is found to be less significant with the port perimeter to area ratio. The flame interference might highly depend on the spacing and port perimeter to area ratio, and it also affects the burner performance.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2000.11a
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• pp.559-562
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• 2000

In this paper, coplanar waveguide fed antennas (CPWFAs) insetting two slits to boundary of the square microstrip patch are presented. These slits play roles in not only lowering a resonant frequency but also fine-tuning for the proposed antenna together with open stub of CPW feed line. The CPWFAs were designed and manufactured using microwave dielectrics (Al,Mg)TaO$_2$ having high dielectric-constant ($\varepsilon$r=20). The return loss and input impedance of the CPWFAs were investigated in terms of the slit length and open stub length of CPW feed line. It is shown that a resonant frequency decreases as the slit length increases.