• Journal of Navigation and Port Research
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• v.33 no.5
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• pp.303-308
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• 2009

Recently, unmanned systems have been studied and developed in various areas including aircrafts, automobiles and vessels. In addition, many researches about unmanned systems in Korea have been studying actively with the advancement of IT However, it is not satisfied with the result of the researches and developments. Bemuse of the reason we've here tried to make a very small USV which is a barge type. We applied the Great circle navigation calculation based on GPS to the autonomous navigation algorithm and used the LabVIEW 8.2 developed by NI corp. for programming The engine and rudder were controlled by pulse width modulation method. The engine system was composed of the DC motor and ESC(Electronic Speed Controller). It was also applied by the direct cooling system using DC motor pump. A very small USV was designed and made by ourself and it was verified the effectiveness of autonomous navigation algorithm through the tests at the sea.

• Fashion & Textile Research Journal
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• v.17 no.2
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• pp.227-236
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• 2015

This study analyzed the lower body type of 30's Korean men to develop a slim-fit pants pattern. As the analysis data, direct measurement data of anthropometric measured value in the 6th Size Korea(KATS, 2010) was used as basic data with 481 men in 30's as analysis objects. The result are as follows. First, the result of analyzing factors for the lower body type classification indicated five factors. Second, the result of executing group analysis (with the independent variable of 5 clusters extracted from the factor analysis)classified the following three types. Type 1(36.8%) displayed a medium height of lower body type, small waist and hip, slim and fit body type with a slim shape between the knee and ankle. The shape between the waist and hip had characteristics of a slight curve and short length. Type 2(35.6%) displayed lowest height of a lower body type that was large and thick between the waist and the hip. The drop value of the waist and the hip was small; therefore, the body type was flat with a minimal curve. The underpart type (below the knee) was the thickest and the length was short. Type 3(27.7%) displayed the highest lower body type, a medium level waist size, flat and narrow waist and belly. This body type had a curve with big drop value of the waist and the hip, lower part from the hip to the ankle (including the knee) and a thick calf with along leg.

• Journal of the Korean Chemical Society
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• v.19 no.2
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• pp.85-91
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• 1975

The crystal structure of piperidinothiosemicarbazide, $C_6H_{13}N_3S$, has been determined by single crystal X-ray analysis. The space group is P21/c with four molecules in the unit cell of dimensions $a=14.68{\pm}0.04,\;b=4.59{\pm}0.02,\;c=12.92{\pm}0.04{\AA}\;and\;{\beta}=109.4{\pm}0.2^{\circ}$. Three-dimensional photographic intensities were estimated visually. The structure has been solved by an interpretation of a Patterson synthesis and refined by block-diagonal least-squares methods to give a final R value of 0.14 for 378 observed independent reflections. There are two independent hydrogen bonds in the structure. One of them is of the type N-H${\ldots}$S with the length 3.28 and $3.39{\AA}$, and another is of the type N-H${\ldots}$N with the length $3.03{\AA}$. Apart from the hydrogen bonding system the molecules are held together in the crystal by van der Waals forces.

• Journal of Fashion Business
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• v.17 no.4
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• pp.1-21
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• 2013

A study using compare and analyze about differences among three basic pants patterns(shape and size of pattern, fitting and amount of air gap and so on) through 3D simulation. This study use 3D simulation program, DC Suite version 3.0. The results are as a follows: The results of comparison about total pants pattern shape, the ESMOD have two tucks of front and one dart of back and the Secoli and On&on have each dart of front and back. The results of estimation about total appearance, the On&on is the best of all pattern about total silhouette of front and back side and the ESMOD is the worst of all. In a case of the ESMOD, the thigh part has so many spaces between body and pants so it is rated low. When we examine about space between body and pants, amount of air gap of ESMOD is 0.6 at waist circumference and next is On&on(0.07). In case of hip circumference, the Secoli is 0.08 and the ESMOD is 0.14. The ESMOD's amount of air gap is 0.32 at thigh circumference and 0.62 at knee circumference. The Secoli's amount air gap is 0.26 at thigh circumference and 0.59 at knee circumference.

• Journal of the Korea Fashion and Costume Design Association
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• v.16 no.4
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• pp.157-175
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• 2014

This study aimed to develop appropriate jeans patterns for men in their twenties. The study discovered designs and materials that were most commonly used by investigating preferred jeans brands for men in their twenties, and among them three brands were selected. The study carried out a fitting assessment aimed at research subjects who had the average body type of men in their twenties and who wore jeans of the selected brands. Then, the study designed research patterns by taking as a basic pattern the patterns of the company who received the highest score and modifying any part that revealed a problem. After making the research jeans in twice, a fitting adequacy assessment was undertaken in order to identify any difference between the existing jeans and the research jeans. As a result of the appearance assessment, the problems shown in appearance overall was confirmed to be improved as it received a higher assessment compared with the existing jeans overall. As a result of the fitting assessment, the study collected the assessment results of waist measurement, hip circumference, thigh circumference, and fit of back central line laid slope ease. Based on the result, the study confirmed the parts to be modified and proposed slim fit jeans patterns in consideration of the body type characteristics of men in their twenties.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• v.1
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• pp.293-300
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• 2006

Present International trend of political and economical globalization plays a decisive role in or effect on the domestic problem between South and North Koreas. According to the timely historical tendency, economical cooperation or transportation between the two Korean regimes grows fast and the need of developing optimized logistics system grows significantly as well. In the present research, various transportation methods such as trucking, train, and short sea shipping(SSS) are surveyed and investigated. Based on the survey, a pusher-barge system, among various SSS systems, is introduced as the best or optimized transportation method between Incheon and Gaesugn.

• Fashion & Textile Research Journal
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• v.21 no.3
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• pp.308-317
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• 2019

This study provided data for classifying and characterizing the lower half of the body shape for obese adult men in their 30s and 40s. Data of 492 adult males who were obese with a WHO criteria of >25 BMI were used for analysis. The results of the study are as follows. Six factors extracted from the factorial analysis as independent factors for cluster analysis were classified into three types. Type 1 (65.4%) had the lowest height of the lower half of the body with short circumference and length. Type 2 (20.3%) had the lowest height of the lower half of the body with the largest thickness, width and circumference from the back to the hip, but short in length. Type 3 (14.2%) had the lowest height of the lower half of the body with medium height and waist-height; however, the curve from the waist to the hip was the largest with the largest waist circumference, hip circumference, and width and thickness of the lower half of the body. This study will help to design a slack pattern that utilizes body shape characteristics of men in their 30s and 40s. In a follow-up study, we analyze the slack pattern and educational pattern by the company and study the necessity for a slack pattern for obese males.

• The Journal of the Korea Contents Association
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• v.19 no.6
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• pp.105-113
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• 2019

This study is to analyze the concentration of visual perception of the subject through the eye-tracking experiments targeting popular characters and to investigate it is effective to highlight which part of the character in inducing consumers' interest and curiosity. As a result of the study, the subjects paid more attention to the face than the character's body, and also noted a little attention to auxiliary elements such as pants, tees, shoes, and whiskers. These results mean there is clearly different factor in which the subject's gaze on the character frequently stays and does for a long time. Therefore, the designers should recognize the differences of the concentration of visual perception by character components as a differentiating factor to feel the emotional satisfaction such as the user's interest, empathy, and immersion in the character and actively reflect it when developing the character design. In addition, there was a difference in the visual perception concentration of each of the auxiliary elements, and if careful research is done on whether the influence factors are also due to individual characteristics or another influential factors, it will be a wider study on character design.

• Fire Science and Engineering
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• v.33 no.1
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• pp.179-187
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• 2019

This study performed a survey on the need for an automobile accident-simulation training program for 60 emergency workers and nine emergency medical professors. The results showed that the need for cervical spine immobilization use was highest (76.8%) in first-aid requiring simulation training, and the need for head injury was highest (75.4%) in the scenario requiring simulation training. Based on the 43-month working experience of emergency workers, the uses of pneumatic anti-shock garment, KED, and the need for rapid extrication were significantly different between the two groups (p=0.01, p=0.05). In addition, the scenario showed statistically significant differences in the need for face, abdomen, and other injuries in both group (p=0.05, p=0.04, p=0.03). The needs of emergency workers and emergency medical professors for an automobile accident simulation-training program were high, and the development of a simulation program is needed.

• Journal of the Korean Society of Clothing and Textiles
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• v.45 no.1
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• pp.106-122
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• 2021

This study confirmed the mechanical properties of an auxetic re-entrant pattern prepared using 3D printing technology and its composite fabric with neoprene for the production of functional auxetic patterns/textiles for safety shoes. Samples were prepared by the tilt angle of a re-entrant pattern of 0°, 30°, 45°, 60° and 90°, and then analyzed using Poisson's ratio, bending, compression, and tensile properties. A 3D printed auxetic re-entrant pattern (3DP-RE) and its composite fabric (3DP-RE/NP) showed a negative Poisson's ratio in all tilting angles that indicated auxetic properties. The results of the bending property shown that strength of 3DP-RE/NP was 1.5 times lower than NP, but the strain improved 2.0 times. It was confirmed that the deformation of 3DP-RE/NP is possible with a low load. Each sample type of compression behavior indicated similar regardless of the tilting angles; in addition, the compression toughness of 3DP-RE/NP increased 1.2 times compared with NP. In the case of tensile properties, 3DP-RE and 3DP-RE/NP were affected by the tilting angle, samples with 90° (the opposite of load direction) showed best tensile property and toughness. 3DP-RE/NP indicated improved bending, compression, and tensile properties.