• 전기학회논문지
• /
• 제63권4호
• /
• pp.589-595
• /
• 2014

The error of instrument transformers is measured by connecting the external burden with the secondary terminal of the instrument transformers. Because the error of transformer is affected by the apparent power and power factor of the external burden, an accurate measurement of burden is important for transformer evaluation. We have developed the burden evaluation equipment for both potential transformer and current transformer by employing the series resistor in the range of $20m{\Omega}{\sim}5{\Omega}$ and the parallel resistor in the range of $1M{\Omega}{\sim}500{\Omega}$, respectively, together with visual basic program. We could reduce testing time more than 5 times by employing method developed in this study, compared with that developed in past. This method shows more better reliability by analyzing the evaluation results and fitting graphs of burden measurements. The test results of the developed system is compared with those obtained in the power meter analyzer to verify the validity.

• 한국의류학회지
• /
• 제24권7호
• /
• pp.1004-1014
• /
• 2000

The purpose of this study was to develop a well-fitting bodice basic pattern for high school irk. Two bodice patterns were first made based on the most recent existing drafting methods and sensory evaluation was done on the patterns by the present researchers Two high school girls possessing standard physical condition tried and evaluated the functionality of the garments made by the two bodice patterns. Based on the results of the evaluation, a new bodice basic pattern was developed. The new bodice basic pattern was drafted by long measurement method. The dimensions of new bodice basic pattern were as follows. Bust circumference=B/2+4cm, Arms hole depth=C.B/2+1.5cm, Back width=B/6+4cm, Front width=B/6+3cm, Back neck width=B/12+0.5cm, Back neck depth=Back neck width/3cm, Front neck width=B/12cm, Front neck depth=B/12+0.5cm. The sensory and functional evaluations were also conducted for the new bodice basic pattern and the two patterns drafted by the existing methods. The new bodice basic pattern showed better fit both visually and functionally than the existing patterns. SPSS package including means, standard deviation and one-sample T-test were used for data analysis.

• 한국생활과학회지
• /
• 제15권6호
• /
• pp.1037-1047
• /
• 2006

In this paper, various structures of the healthcare smart clothing for real-time measurement of vital sign were suggested. The wearing efficiency was evaluated to find out the best ergonomic clothing in the suggested design. The supplementary effects of the clothing components (princess line, double fabric, cushion) on the stable and tight positioning of sensors to the body were evaluated with wear test. Five experimental clothing for male subject were made with closely-fitted shape and they included two representative structure: one was the integrated type of inner and outer garments and the other was the separated type with two garments. Eight subjects in their twenties were participated in the wear test to evaluate the wearing efficiency of experimental clothing. As results, the clothing structure of the separated garments with the inner and the outer shells were evaluated as more efficient and comfortable. However, the effects of clothing components on the light positioning of the sensors to the body surface were not differentiated each other in the subjective evaluation.

• 한국의류학회지
• /
• 제35권3호
• /
• pp.312-324
• /
• 2011

This investigates the type of pants preferred by Korean men in their 20s through a subjective wear test. Six types of men's pants were developed as experimental garments. The male subjects were university students between the ages of 20 and 24. Subjective wear sensations of the experimental pants were rated using seven Likert scales. A 7-point Likert-type scale was used for the evaluation, with 7 indicating the best fit. As a result, a basic men's sloper for lower body clothing was developed based on SizeKorea 2004 anthropometric measurements surveyed between 2003 and 2004. A basic pattern (A) was manipulated to tight-fit pants (E) and loose-fit pants (D, L, M, and N) by considering the ease at hip level and the style. Among the six pants, pants D and L (4cm ease at hip level) were found to be superior to others in terms of comfort, fitting, and crotch depth. With regard to ease and comfort of the crotch part, pants E and A (0cm ease at hip level) were found to be the least preferred.

• 디지털콘텐츠학회 논문지
• /
• 제18권1호
• /
• pp.159-165
• /
• 2017

태블릿 캡슐의 품질 검사를 자동으로 해내기 위해서는 효율적인 이미지 처리기법, 적절한 임계치 설정, 에지 검출 그리고 세그멘테이션 방법 등이 필요하다. 그리고 기 존재하는 태블릿 캡슐의 품질 자동 검사 장비는 매우 고가이므로 품질 검사의 용이성을 높이기 위해서 저가의 하드웨어 시스템이 도입 되어야하다. 본 연구에서는 저가 카메라 모듈을 사용하여 이미지를 취득하고 전최소자승법 커브 피팅, 에지기반 이미지 세그멘테이션 방법을 사용하여 태블릿 캡슐의 함몰을 검사한다. 제안한 방법의 성능을 보이기 위해서 주요 분류 알고리즘인 PCA, ICA, SVM 방법을 사용하여 캡슐이미지 영역 데이터세트와 커브 피팅 에지 데이터세트에 대하여 훈련시간, 테스트시간 그리고 분류 정확도를 구하였다.

• 한국안광학회지
• /
• 제16권3호
• /
• pp.255-264
• /
• 2011

목적: 인공눈물, 렌즈용 다목적 용액, 화장품, 근골격계 용제에 널리 사용되고 있는 히알루론산(hyaluronic acid, HA)의 콘택트렌즈의 습윤성과 착용감에 대한 효과를 알아보기 위해 HA가 첨가된 콘택트렌즈(+HA)와 HA가 첨가되지 않은 렌즈(-HA)를 임상 평가하여 비교하였다. 방법: 안질환이 없는 대학생 28명을 대상으로 하여 4주 동안 우안에는 HA가 첨가된 렌즈(+HA, With HA)를 좌안에는 HA가 첨가되지 않은 렌즈(-HA, Without HA)를 착용하여, 좌안을 대조군으로 우안을 비교하였다. 이 때, 렌즈 도수는 등가구면으로 처방하고, 자동굴절검사기를 이용해 덧댐굴절검사를 한 뒤 2주와 4주 동안 렌즈 착용 후 눈물검사, 전안부 검사, 피팅 용이성 평가, 표면 습윤성 검사, 설문조사를 시행하였다. 결과: 히알루론산이 첨가된 렌즈(+HA)가 -HA 렌즈보다 우수한 습윤성을 보였으며, 눈물량은 +HA 렌즈 착용자에서는 4주 동안 차이가 크지 않았지만, -HA 렌즈 착용자에서는 4주가 되면서 눈물량이 줄어드는 결과를 보였다. +HA와 -HA 렌즈 착용자의 충혈정도는 차이를 보이지 않았으며, 렌즈 피팅은 +HA 렌즈에서 용이한 것으로 나타났다. 설문조사 결과에서 착용감, 습윤감, 세척의 용이성과 건조감은 +HA 렌즈가 -HA 렌즈에 비해 우수한 결과를 보였으나, 충혈정도와 렌즈 취급성은 차이가 적은 것으로 나타났다. 결론: 히알루론산이 첨가된 소프트콘택트렌즈(+HA)는 HA가 첨가되지 않은 소프트콘택트렌즈(-HA)에 비해 렌즈착용에 따른 표면 습윤성을 높임으로써 착용감을 증진시키는 것으로 사료된다.

• 한국의류산업학회지
• /
• 제17권3호
• /
• pp.429-439
• /
• 2015

This study develops a new brassiere for new silver women. A new brassiere design was developed for the silver generation based on apreliminary survey; subsequently, a wire and no-wire type of brassier were developed after a second fitting evaluation. The results were as follows. First, in terms of brassiere design, the cup shape was designed as mold type full cup, shoulder straps were designed as camisole type with cups, bias tape was designed for body correction in the side line and mash tape was designed for easy movement below the cups. On the other side ofthe cup shape was a pocketdesigned on a support pad forthe wire type and a support panel to serve as a wire in the no-wire type brassiere. Second, brassiere patterns were designed by referencing the educational H pattern. Thetotal length was elongated by 5cmto reduce pressure when wearing a brassiere and the height of the front center increased by 8cm for the stability of the front center of the brassiere. In addition, the side line was moved back by 3cm and the width of the brassiere wings was designed widely at 10.5cm. Third, a wearing test was conducted for the wire type and the no-wire type brassiere with comparison products, using a 7-point Likert scale. Appearance results and movement tests for the wire and no-wire type showed a higher score than comparison products.

• 대한핵의학회지
• /
• 제27권2호
• /
• pp.239-247
• /
• 1993

Differentiating the various causes of hydronephrosis from that of obstruction can be very difficult. The decision-making process for those instances of urinary tract dilatation that require surgical correction and those that do not is based in part on the findings of diuresis renography. The methodology for performing this test has differed among nuclear medicine practitioners and the surgical findings are occasionally discrepant from the diuretic renogram interpretation. Consequently we made an automatic computer software program that calculates the slope of the response curve. The quantitative indices, such as the injection and response t1/2 by linear-fitting and monoexponential-fitting, were compared with the visual assessment of the diuretic cinerenography and clinical outcome in 50 children (62 kidneys) with ureteropelvic junction obstruction. Pooled diuresis renogram data indicated that: (1) Visual evaluation of the diuretic cinerenography is a sensitive (87%, 54/62) tool to differentiate obstruction in suspected ureteropelvic junction obstruction. (2) The cut-off value (maximum washout t1/2 with non-obstruction) of injection and response t1/2 by linear-fitting were 40 min. (3) The sensitivity and specificity using injection and response t1/2 by linear-fitting for obstruction were 89%(23/26) and 100%(30/30), respectively. (4) Response t1/2 as well as injection t1/2 by monoexponential-fitting do not stratify children with possible ureteropelivic junction obstruction. In conclusion, quantitative assessment of diuretic renography as well as visual assessment of diuretic cinerenography correlate well with surgical and clinical outcome of suspected ureteropelvic junction obstruction.

• 한국의상디자인학회지
• /
• 제17권4호
• /
• pp.55-66
• /
• 2015

The objective of this study is to propose a method by which movement fitness can be evaluated using a three-dimensional virtual garment simulation program. To this end, five types of jean pants for men were evaluated on the program by setting the avatars to make particular movements to examine the level of pressure on each body part. To verify whether the clothing pressure measurement produces valid and reliable results, virtual garment simulation program was utilized. The results indicated that there were significant differences in the levels of pressure on body parts depending on the type of test garment and motion. In addition, the clothing pressure measurement results were in line with the appearance evaluation results suggested by a previous study. Based on this set of results, the nomological validity of the clothing pressure measurement program used in this study was verified. Moreover, we employed an appearance evaluation along with the clothing pressure measurement to verify the reliability of the program; there was a high correlation between clothing pressure measurements and appearance evaluation measurements, indicating that measuring clothing pressures may well compensate for the limitations of appearance evaluation. We expect the results of this study to make valuable contributions in facilitating the digitalization of the fashion industry. Furthermore, this study also is significant in that it has suggested 3D virtual fitting programs as a solution to the long-criticized problem related to the evaluation of movement fitness in existing virtual garment simulation programs.

• Wind and Structures
• /
• 제8권5호
• /
• pp.309-324
• /
• 2005

Aerodynamic damping often plays an important role in estimations of wind induced dynamic responses of super high-rise buildings. Across- and along-wind aerodynamic damping ratios of a square super high-rise building with a height of 300 m are identified with the Random Decrement technique (RDT) from random vibration responses of the SDOF aeroelastic model in simulated wind fields. Parametric studies on effects of reduced wind velocity, terrain type and structural damping ratio on the aerodynamic damping ratios are further performed. Finally formulas of across- and along-wind aerodynamic damping ratios of the square super high-rise building are derived with curve fitting technique and accuracy of the formulas is verified.