• PNF and Movement
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• 제21권2호
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• pp.159-169
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• 2023

Purpose: The study examined the effect of dynamic taping and Kinesio Taping intervention on round shoulder posture, pectoralis minor length, craniovertebral angle, and balance in 20s adults with rounded shoulder posture. Methods: A total of 20s Adults with rounded shoulder posture were recruited and randomized to Group I (n = 15) and Group II (n = 15). Group I performed dynamic taping. Group II performed Kinesio Taping. Round shoulder posture and pectoralis minor length were measured using a tape measure. The craniovertebral angle was measured using a goniometer. Balance was measured using Biorescue. Results: As a result of comparison within groups, groups I and II showed a significant difference for round shoulder posture, pectoralis minor length, craniovertebral angle, and balance after the experiment (p < 0.05). In a comparison between the two groups, the experimental group showed a more significant difference in round shoulder posture, pectoralis minor length, craniovertebral angle, and balance than the control group (p < 0.05). Conclusion: This study showed that dynamic taping intervention was effective in round shoulder posture, pectoralis minor length, craniovertebral angle, and balance in 20s adults with rounded shoulder posture.

• 한국터널지하공간학회 논문집
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• 제8권3호
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• pp.219-225
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• 2006

터널시공에 있어서 굴진장은 기술적인 면뿐만이 아니라 경제적인 면에서도 큰 영향을 끼치지만 현재까지 굴진장 결정을 위한 일관된 절차는 연구되지 않았다. 본 연구에서는 수치해석을 통해 굴진장이 연암터널의 거동형태에 끼치는 영향을 알아보았다. 터널 막장과 무지보구간의 거동형태를 막장안전률과 설계차트를 이용해 정량적으로 판단할 수 있도록 하였으며, 설계단계에서의 최적 굴진장을 사이클타임과 공사비 등의 시공자료를 이용해 분석하였다. 비록 본 연구결과가 몇몇 적용한계를 가지고 있지만 설계단계에서 터널 굴착을 최적화하기 위한 정보를 제공할 수 있다.

• 터널과지하공간
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• 제17권1호
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• pp.9-16
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• 2007

굴진장이 터널의 안정성 및 시공비에 미치는 영향에 대해서는 많은 연구자와 기술자들이 잘 알고 있지만, 아직 굴진장 결정에 대해서 일관된 절차가 수립되지는 못한 실정이다. 본 연구에서는 굴진장을 고려한 연암터널의 막장과 무지보 구간의 거동형태를 실내모형실험, PFC3D 및 FDM 해석을 통하여 조사하였다. 총 다섯 개의 거동형태를 정의하였고, 막장 안전율과 설계 도표를 통해 거동형태를 정량적으로 판단할 수 있도록 하였다. 비록 본 연구에서 제안한 방법이 몇몇 제한을 갖지만, 굴진장과 굴착의 최적화를 위한 유용한 정보를 제공할 수 있을 것으로 사료된다.

• 복식
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• 제52권2호
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• pp.103-113
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• 2002

Heungdukwang'(興德王) costume ordinance(834A.D.) is a very important written historical record because it reveals Tongil Shills's(統一新羅) costume. But among the clothing pieces that appeared in Heundukwang'(興德王) costume ordinance, classification of Naeoe(內衣) and Danoe(短衣) is not clear. This study focuses on the categorization of Naeoe(內衣) and Danoe(短衣). Upper garments included among costume ordinance were Pyooe(表衣), Naeoe(內衣) and Danoe(短衣), Pyooe(表衣) and aeoe(內衣) were unisex, while Danoe(短衣) was worn only by women excluding the lower class. Pyooe(表衣) is applicable to Po(袍), Naeoe(內衣) is aplicable to Yu(유). Shilla'(新羅) upper garments appearing in visual records are as follows: -With the exception of Pyooe(表衣), the length of men's upper garments were between hip and knee length. These upper garments featured V-neck and round neck styles with the left side of the garments folded over the right side. -Again excluding Pyooe(表衣), women's upper garments were similar to men's upper garments having V-neck and round necklines. We know this to be true from the relics found during the excavations of Hwangsungdong and Yonggangdong, as well as from the women in the stone reliefs of Sangju. Although we know the shape of necklines. the length of upper garments remained a mystery because women of that tome tucked in their upper garments into the skirts and/or wore an over garment. However a clay doll found around Bulguksa(佛國寺) wearing a knee length garment with V-neck. The upper garment was opened in the front and was worn over another garment with same length and round neckline. At that time, The upper garments found in China and Japan. were not much different than those found in Shilla (新羅). They also included garments that were waist length, had peach-shaped necklines, or were worn over head. Shilla's(新羅) traditional upper garment was between hip and knee length, but with the introduction and influence of Chinese costume. upper garments with a length coming down to the high waist line began to appear. In addition to Chinese influence, because Shilla's(新羅) women wore the upper garment first and then the lower garment, a long upper garment was not necessary. These shorter upper garments came to be known as 'Danoe(短衣)'When we perceive clothing. we look at silhouette first and then the details. Silhouette is much determined by length and neckline or the front of the garment determines the details, So we need to attention to the basis of ancient dress classifications. These classifications were according to first length [Po(袍), Yu(유)] and then neckline [Danryoung(團領), Jingryoung(首領)]. As a result. Naeoe(內衣) and Danoe(短衣) are classified by the length. The length (內衣) was between hip and knee length while Daneoe(短衣) was waist length. Danoe(短衣) was worn by putting the bottom of it inside skirt naeoe(內衣) was worn over a skirt or plant. But both had V-neck and round neck styles, and styles with the left side of the garments folded over the right side.

• 소성∙가공
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• 제10권4호
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• pp.302-310
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• 2001

The twisting and extrusion process of the product with involute helical fin from the round billet is developed by the upper bound analysis. The twisting of extruded product is caused by the twisted inclined die surface connecting the die enterance section and the die exit section linearly. In the analysis, the internal shear surface is defined as the curved twisted plane from the twisting of die surface and the shear work is calculated by the consumption of shear energy. The increase rate of angular velocity is determined by the minimization of plastic work. The angular velocity of die exit can be controlled by the land length and the length of inclined die. The alular velocity assums to be increased linearly by the axial distance from the die enterance to the die exit. The results of the analysis show that the angular velocity of the extruded product increases with the die twisting angle, the reduction of area, and decreases with the die length, the friction constant.

• 대한정형도수물리치료학회지
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• 제27권2호
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• pp.17-25
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• 2021

Background: The purpose of this study is to investigate basic data about the effects of muscle energy technique on the shoulder complex range of motion and posture alignment in the round shoulder posture. Methods: The subjects included 15 women that gave consent to participate in the study voluntarily. They performed the muscle energy technique for 30 minutes twice. The round shoulder posture was measured with a straight edge ruler. The shoulder complex range of motion was measured with the apley scratch test. The forward head posture was measured with ImageJ. The pectoralis minor muscle length was measured with a tape measure. Results: There were statistically significant differences in the round shoulder posture both right and left (p<.05). The experiment group showed statistically significant differences in the pectoralis minor muscle length (p<.05). There were significant differences in the shoulder complex range of motion including flexion, left lateral flexion, right lateral flexion, left side bending, and right side bending (p<.05), but no significant differences were found in extension (p>.05). The forward head posture showed significant differences in CVA changes (p<.05) and no significant differences in CRA changes (p>.05). Conclusion: These findings demonstrate that the muscle energy technique relaxed muscles around the shoulders and increased the shoulder complex range of motion. The technique is also expected to prevent pain in the neck and shoulders and lower injury risk. In conclusion, the muscle energy technique can be applied as an effective intervention for round shoulder posture.

• The Journal of Advanced Prosthodontics
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• 제15권6호
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• pp.302-314
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• 2023

PURPOSE. The aim of this study was to classify the shapes of retromolar pads and assess their morphometric differences using a 3D model. MATERIALS AND METHODS. Two hundred fully edentulous or Kennedy Class I partially edentulous patients (400 retromolar pads) were enrolled. Scan data of the definitive mandibular casts produced through functional impressions were obtained using a 3D laser scanner. Seven parameters (transverse diameter, longitudinal diameter, transverse-contour length, longitudinal-contour length, longitudinal/transverse diameter ratio, longitudinal/transverse-contour length ratio, and angle of the retromolar pad line to the residual alveolar ridge line) were measured using image analysis software. Subsequently, the pads were classified according to the shape. Statistical analyses were performed using 95% confidence intervals. RESULTS. Classifying the retromolar pads into three shapes led to high intra-examiner reliability (Cronbach's alpha = 0.933). The pear shape was the most common (56.5%), followed by oval/round (27.7%) and triangular (15.8%) shapes. There were no significant differences between the left and right sides according to the shape and no significant differences in any parameter according to age. The transverse diameter and longitudinal/transverse diameter ratio differed between sexes (P < .05). The triangular shape had a significantly different transverse diameter, transverse-contour length, longitudinal/transverse diameter ratio, and longitudinal/transverse-contour length ratio compared with the pear and oval/round shapes (P < .05). CONCLUSION. From a clinical reliability standpoint, classifying retromolar pads into three shapes (oval/round, pear-shaped, and triangular) is effective. The differences in the sizes among the shapes were attributed to the transverse measurement values.

• Water Engineering Research
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• 제2권2호
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• pp.89-101
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• 2001

The theoretical treatments on jets, in which the flow is issuing into a stagnant medium, have been based on Prandtl's mixing theory. In this study, using Prandtl's mixing length hypothesis, a theoretical relationship for the velocity profile of a single round jet is derived. Furthermore, Gaussian expression is used to approximate the theoretical relationship, in which the Gaussian coefficient is assumed to be decreasing exponentially as the flow goes far from the orifice. Two data sets for a single round jet performed by tow different techniques of measurement are used to verify the suggested relationships. The theoretical and Gaussian distribution give close results in spite of the difference in approach. The observed mean velocity distributions are in good agreements with the suggested theoretical and Gaussian distributions.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2010년 춘계학술발표회 논문집
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• pp.201-206
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• 2010

한국 측지 VLBI 시스템 건설 프로젝트는 2008년 11월에 공식적으로 시작되었으며, 2011년 말까지 완료하는 것을 목표로 하고 있다. 프로젝트의 공식 명칭은 한국 측지 VLBI 시스템(Korea VLBI system for Geodesy)이며 주목적은 한국측지 기준점을 유지 관리하는 것이다. KVG의 경우 수소 메이저 주파수 표준이 위치한 관측실은 안테나와 수십 m 떨어진 분리된 건물에 있다. 따라서 KVG는 위상 변동 효과가 축소된 기준신호를 안테나로 전달하는 라운드 trip 시스템을 갖출 것이다. KVG의 라운드 trip 시스템은 metal이나 광케이블을 모두 사용할 수 있을 뿐만 아니라 K5/VSSP32 샘플러를 이용하여 위상 변동을 직접적으로 측정하는 것도 가능하도록 설계되었다. 여기서는 라운드 trip 시스템의 기본원리와 KVG를 위한 새로운 타입의 라운드 trip 시스템을 소개할 것이다.

• 대한기계학회논문집B
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• 제24권7호
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• pp.957-966
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• 2000

The effect of rotation on the discharge coefficient of orifices with various length-to-diameter ratios and two different inlet corner radii was studied. Length-to-diameter ratios of the orifices range from 0.2 to 10, while the inlet shapes are square edged, or round edges of radius-to-diameter ratio of 0.5. From the experiment, we found that rotational discharge coefficient and Rotation number, when based on ideal exit velocity of the orifice considering momentum transfer from the rotor, describe the effect of rotation very well. In this study, the discharge coefficients of rotating orifices are shown to behave similar to those of the well-known non-rotating orifices. For both rotating and non-rotating orifices, the discharge coefficients increase with the length-to-diameter ratio until a maximum is reached. The flow reattachments in the relatively short orifices are responsible for the increase. The coefficient then decreases with the length-to-diameter ratio due to the friction loss along the orifice bore. The length-to-diameter ratio that yields maximum discharge coefficient, however, increases with the Rotation number because the increased flow-approaching angle requires larger length-to-diameter ratio for complete reattachment. The length-to-diameter ratio for complete reattachment is shorter for round edged orifices than that of square edged orifices by about a unit length-to-diameter ratio.