• The Bulletin of The Korean Astronomical Society
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• v.38 no.2
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• pp.71.2-71.2
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• 2013

The standard stellar models for HIP 20916 and HIP 101769 have been constructed to determine the properties of the binary system. Augmented with speckle data which is the magnitude difference between stars of the binary system, the previously determined parameters, such as [Fe/H], distance, total mass, and etc, are used to construct the standard stellar models. And the Green table is used to convert L and $T_{eff}$ into $M_v$ and color for comparison between models and observational data. We present the constructed stellar models of the system.

• Proceedings of the Korean Society For Composite Materials Conference
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• 1999.11a
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• pp.239-241
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• 1999

Recently, the friction and wear behaviors of UHMWPE, ceramic and metal is being researched actively for the use as an artificial hip-joint. In this study, because of good wear properties of carbon fiber, we made experiments about the friction and wear of carbon fiber reinforced epoxy composite under the lubricative and the dry condition. The possibilities of carbon-carbon composite for the artificial hip joint application was studied from this results.

• Journal of the Korean Ceramic Society
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• v.24 no.3
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• pp.223-226
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• 1987

Among many densification routes for silicon nitride, HIP(hot isostatic pressing) is becomming more popular these days, mainly due to the fact that it can produce highly reliable products with superior mechanical properties. This study involves in sintering of silicon nitride followed by HIP which requires no canning. Various property changes curing sintering and HIP are observed and analyzed in terms of microstructural changes. Porosity decrease and enhanced interlocking of grains by HIP are considered to be the major causes for improved mechanical properties of silicon nitride.

• 제어로봇시스템학회:학술대회논문집
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• 2002.10a
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• pp.84.4-84
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• 2002

$\textbullet$ To achieve 3 high power-to-weight ratio, design of 3DOF hip module $\textbullet$ Using parallel mechanism and linear actuator consist of a ball-screw mechanism $\textbullet$ The kinematics analysis for the hip module $\textbullet$ A kinematic index to measure actuator power are introduced. $\textbullet$ It is demonstrated throught simulation that incorporation of redu ndant actuator into the hip module

• The Research Journal of the Costume Culture
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• v.7 no.6
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• pp.140-158
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• 1999

The purposes of this study are to examine the characters of the lower body shape in the middle aged women and to make slacks pattern on the base of four difference body shapes. The lower body shapes were classified into 4 types on the basis of their lateral view silhouettes. The slacks patterns were based on the lower body shape characters and resulted in followings. In “Type 1” of the right body shape with the standard protrusion of abdomen and hips, little difference from conventional patterns was seen in experiment pattern, in which the front waist girth was W/4+0.5㎝+0.5㎝+fold(2.5㎝) and the back waist girth W/4+0.5㎝-0.5㎝+dart(3.5㎝). The front hip girth was defined as H/4+2.0㎝+0.5㎝ and the back hip girth as H/4+2.0㎝-0.5㎝ due to its increased ease amount produced by abdominal fat deposition. In the experimental pattern of “Type 2” with prominent hips, the front and back differences of the waist girth and the hip girth and the hip girth were defined as 1.0㎝ and 2.0㎝ separately. Accordingly, the front waist girth was W/4+0.5㎝+1.0㎝+fold(2.0㎝), the back waist girth W/4+0.5㎝-0.1㎝+dart(6.5㎝), the front hip girth H/4+2.0㎝+1.0㎝ and the back hip girth H/4+2.0㎝-1.0㎝. In “Type 3” with the prominent abdomen and the flat hips, the front waist girth was set up as W/4+0.5㎝+0.5㎝+fold(4.5㎝) for the increased front fold amount and the back waist girth was W/4+0.5㎝+0.5㎝+dart(3.0㎝). The front hip girth was made as H/4+2.5㎝+0.5㎝ and the back hip girth H/4+2.5㎝-0.5㎝. In “Type 4” with prominent abdomen and hips, considered were ① the increased front fold amount due to the abdominal protrusion, ② the increased back dart amount and the decreased back dart length owing to the hips prominent and ③ the front and back differences of waist and hip girth for the lateral view silhouette. Therefore the front waist girth was defined as W/4+0.5㎝+2.0㎝+fold(5.0㎝), the back waist girth as W/4+0.5㎝-2.0㎝+dart(4.0㎝), the front hip girth as H/4+2.0㎝+1.0㎝ and the back hip girth as H/4+2.0㎝-1.0㎝. The sensory evaluation of appearance and comfort was appeared more suitable on the experiment pattern than on the conventional pattern.

• Journal of the Korean Society of Physical Medicine
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• v.16 no.4
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• pp.23-31
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• 2021

PURPOSE: This study compared the effect of training ankle joint and hip joint thera-band exercise on balance. METHODS: The participants were divided into two groups of 11 each. Group A performed hip exercise after ankle exercise, and Group B performed ankle exercise after hip exercise. Using a green thera-band, the dorsiflexion and plantarflexion and hip flexion and hip extension were exercised repeatedly for 15 seconds three times with a five-second rest between each set. After the exercise and measurement of one area were complete, the exercise and measurement of the other area were performed at one-day intervals. The balance ability was assessed using a Tetrax and Y-balance test and repeated three times; the best values were taken. RESULTS: In the stability index (ST) of the static balance, the hip joint exercise group (HTG) during the follow-up of normal eye open (NO) revealed notable improvement over the ankle joint exercise group (ATG), and in the follow-up of the normal eye closed (NC), the ATG showed significant improvement over the HTG. In the pillow with eye closed (PC) follow-up, the ATG showed significant improvements over the HTG. At the left (Lt) and Y-balance test (YBT), the ATG showed significant improvements in the follow-up over the HTG (p <.05). CONCLUSION: In static balance, the ATG showed significant improvement in the follow-up of NC and PC over the HTG. In the dynamic balance, the Lt. dynamic balance on the non-dominant side in the ATG showed significant improvement in the follow-up over the HTG.

• Journal of the Korean Society for Precision Engineering
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• v.24 no.8 s.197
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• pp.130-137
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• 2007

The optimized prosthetic mass distribution was a controversial problem in the previous studies because they are not supported by empirical evidence. The purpose of the present study was to evaluate the effect of prosthetic mass properties by modeling musculoskeletal system, based on the gait analysis data from two above-knee amputees. The joint torque at hip joint was calculated using inverse dynamic analysis as the mass was changed in knee and foot prosthetic components with the same joint kinematics. The results showed that the peak flexion and abduction torque at the hip joint were 5 Nm and 15 Nm when the mass of the knee component was increased, greater than the peak flexion and abduction torque of the control group at the hip joint, respectively. On the other hand, when the mass of the foot component was increased, the peak flexion and abduction torque at the hip joint were 20 Nm and 15 Nm, greater than the peak flexion and abduction torque of the control, respectively. The hip flexion torque was 4.71-fold greater and 7.92-fold greater than the hip abduction torque for the knee mass increase and the foot mass increase on the average, respectively. Therefore, we could conclude that the effect of foot mass increase was more sensitive than that of knee mass increase for the hip flexion torque. On the contrary, the mass properties of the knee and foot components were not sensitive for the hip abduction torque. In addition, optimized prosthetic mass and appropriate mass distributions were needed to promote efficiency of rehabilitation therapy with consideration of musculoskeletal systems of amputees.

• Journal of Fashion Business
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• v.22 no.2
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• pp.27-39
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• 2018

This study analyzed the body shape of women over 70 years and classified their body shapes in order to provide basic data for the development of pants patterns that can complement the weakness of the body shape of elderly women. It were analyzed using SPSS Ver. 20.0. Five factors were extracted from the lower body: obesity and thigh thickness, lower body length, under knee thickness, ankle height, and hip sag. In type 1, the lower body was obese and the legs were thick, but the hips were not sagging. It was named 'high-hip obesity figure'. Type 2's abdomen, hip, and waist were obese, but the legs were thin and the hip were not sagging. Thus, 'bird-leg middle obesity figure' was the name. Type 3 had a long and slender lower body, but legs were thick and the hips were saggy, it was named 'strong-leg low-hip slender figure'. The elderly women showed less difference in waist, abdomen, and hip circumference. The abdominal circumference was 2-3cm more than the waist and hip circumference; hence there is a need to differentiate the shape and number of darts in the production of bottom-wear patterns for older women. In addition, the leg circumference is gradually reduced by aging compared to the size of the lower body. Therefore, it would be necessary to search for a method that can effectively design the difference between the hip circumference and the leg circumference in relation to the body shape and the aesthetics of older women.

• Journal of the Korean Society of Physical Medicine
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• v.17 no.4
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• pp.53-63
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• 2022

PURPOSE: This study examined the changes in the thickness of the abdominal muscles, including the transversus abdominis, according to the set pressure applied by a pressure biofeedback unit during contractions of the hip adductor muscles. METHODS: After randomizing 40 healthy adult males in their 20 s and 30 s, the participants were instructed to match the pressure gauge indication of the pressure biofeedback device to continue contracting the hip adductor while maintaining it at 10 mmHg (low), 40 mmHg (medium), or 70 mmHg (high). The measurement was taken over five seconds using an ultrasound device. RESULTS: According to the contractile pressure applied to the hip adductor muscle, there was a significant difference in the muscle thickness change of the transverse abdominis muscle between 10 mmHg and 70 mmHg and between 40 mmHg and 70 mmHg. The muscle thickness ratio of the external oblique/abdominal muscle was significantly different between 10 mmHg and 70 mmHg and between 40 mmHg and 70 mmHg. CONCLUSION: Increased contraction pressure on the hip adductor muscle increases the muscle thickness of the abdominal transverse muscle. Interbody stability exercise with contractions of the hip adductor muscle is expected to help increase in the muscle thickness of the hip adductor muscle.

• The Research Journal of the Costume Culture
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• v.14 no.2
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• pp.271-285
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• 2006

The purpose of this study was to develop a new basic skirt pattern for 4 lower body types of Plus-sized women. To reduce a time and economic loss about putting it on, This study applied a 3D sample module in the course to develop a basic skirt pattern which is fit, functional and beautiful. A data analysis used the SPSS 11.0 statistics program. To verify the difference, This study used the variance analysis and Duncan's test for the postmortem verification. The result was as follows. To reflect a feature according to an abdomen projection and hip projection, we added the maximum hip circumference to the waist circumference and hip circumference for necessary for a skirt draft item. The front hip circumference sets to the H/4+1cm(ease)+D/4. The back hip circumference set to the H/4+0.5cm(ease)+D/4. The D is the hip circumference in the maximum hip circumference to subtract. The front waist circumference sets to the W/4+0.5cm(ease)+0.5cm(A front and back's difference)+D/4. The back waist circumference sets to the W/4+0.5cm(ease)-0.5cm(A front and back's difference)-D/4. Compare with 4 lower body types of Plus-sized Women, A type 2 and type 4 abdomen projections are bigger. We raised a front waistline of skirt pattern to a 0.3cm upside, and take about 1.3cm down the skirt length from a developed skirt pattern. Consequently, the appearance of a front skirt length was improved with a side skirt length.