• 한국의류학회지
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• 제20권6호
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• pp.1107-1115
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• 1996

An investigation made of the easing contraction ratio according to sewing condition (seam line; wp, wf, 45$^{\circ}$ bias, stitch density; 13 stitch/cm (0.8 mm), 9 stitch/cm (1.1 mm), 6.5 stitch/ cm (1.5 mm), 5 stitch/cm (2 mm), 4 stitch/cm (2.5 mm), thread; sp 60$^{\circ}$s/2, sp 60$^{\circ}$s/3, st 60$^{\circ}$s/3, st 50$^{\circ}$s/3)) by lockstitch industrial sewing machine with shirring foot. The correlations of the easing and sewing conditions were by SPSS PC), and visual test was done by enlarged photo. The results obstained were as follows:. 1. The easing contraction ratio is increased in proportion to the low of stitch density. 2. The easing contraction ratio of wp, 45$^{\circ}$ bias is correlated with stitch density, and that of wf be with stitch density, elongation & weight. 3. The easing contraction ratio of 13 stitch/cm (0.8 mm), 9 stitch/cm (1.1 mm), 6.5 stitch/ cm (1.5 mm), 5 stitch/cm (2.0 mm) is correlated with flexible rigidity, and that of 4 stitch/ cm (2.5 mm) be with flexible rigidity and crease-resistance. 4. As a results of SPSS PC+ statistics, the easing contraction ratio is statistically correlated to the seam line, stitch density, upper thread tension, and fabric characteristics. 5. As a results of visual test by the enlarged photo, the limit of stitch density for easing contraction was 5 stitch/cm (2.0 mm).

• 대한물리의학회지
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• 제9권4호
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• pp.355-361
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• 2014

PURPOSE: The purpose of this study was to determine the immediate effect of low-dye taping on balance performance in subjects with flexible flatfoot. METHODS: Fifteen asymptomatic volunteers who had flexible flatfoot (age, $21.7{\pm}1.81$years; height, $164.80{\pm}7.57cm$; weight, $56.47{\pm}10.48kg$) were participated for this study. Navicular drop test was used to evaluate pronation of foot in three different conditions; non-weight bearing position without low-dye taping, weight bearing position without low-dye taping, weight bearing position with low-dye taping. And balance performance (anterio/ posterior, medial/lateral, and overall) was evaluated using the Biodex Balance System in three different conditions; one-leg standing without low-dye taping, one-leg standing with low-dye taping, and one-leg standing with low-dye taping in one week later. Repeated-measures analysis of variance (ANOVA) was used to assess navicular height and balance performance across the three testing conditions. RESULTS: Significant and clinically meaningful improvement in navicular height was found after application of the low-dye taping. However, there was no statistically significant change in balance performance. CONCLUSION: The results of this study provide evidence to suggest that low-dye taping does not affect balance performance.

• 가정과삶의질연구
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• 제4권2호
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• pp.25-34
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• 1986

This study aimed to find out the suitable design of footwear cabinet. The questionnaire data from 1969 persons of 400 families about footwear cabinet showed following results. 1) The number of shoes was related with sex, age, occupation, family income, the number of family members and educational level of housewives. 2) The size of shoes in the range of 80% of the investigated shoes was 30cm of height, 30cm of length, and 10cm of width. 3) The satisfaction with footwear cabints was mainly decided by the size and space of the cabinet. 4) Umbrella, tools and shoe polish and brush were usually kept in the footwear cabinet as well as shoes. On the basic of the results above. The size of 108cm of length (20cm for umbrella), 35cm of width and 105cm of height is sugested as the desirable footwear cabinet for the General public housing scale apartment for 5 family members and this cabinet should have 5 divider and one flexible divider by 30cm which may be adjusted by 20cm.

• 대한족부족관절학회지
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• 제8권1호
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• pp.39-45
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• 2004

Purpose: The author modified the technique of Grice-Green, for managing flexible flat foot, with severe hindfoot valgus and possible dorsiflexion more than $15^{\circ}$. The purpose of this study was to evaluate the efficacy and results of this modified technique. Material and Methods: Total of 6 patients, 11 cases of pes planovalgus were operatively managed with Modified Grice-Green procedure from Nov. 1996 to April 2002. Total 11 cases in 6 patients were managed; 9 cases in 5 males, 2 cases in one female. The average age of the patients were 7.3 years (5.1-13.3 years). Average follow up period was 3.9 years (1.2-6.7 years). Patients were evaluated preoperatively and at last follow up radiologically and clinically. Radiologic evaluation were done by measuring the talocalcaneal and talo-$1^{st}$ metatarsal angles with the anteroposterior view; and by measuring the talo-$1^{st}$ metatarsal angles with the lateral view. The clinical outcome were rated by subjective and objective improvement level. Results: On follow up, 9 cases were complete satisfied, 2 cases were satisfied with minor reservation and no case had major reservations or dissatisfaction. Objective results were rated as excellent in 9 cases, good in 2 cases. Average preoperative talo-calcaneal and talo-$1^{st}$ metatarsal angles on anteroposterior radiograms were $34.4^{\circ}$ ($16-40^{\circ}$) and $32^{\circ}$ ($8-48^{\circ}$) respectively; which postoperatively on last follow up were $20^{\circ}$ ($3-37^{\circ}$) and $15.6^{\circ}$ ($3-34^{\circ}$) respectively. Average Preoperative talo-$1^{st}$ metatarsal angle on lateral radiogram was $18.4^{\circ}$ ($6-30^{\circ}$); which postoperatively on last follow up was $6.7^{\circ}$ ($-6-17^{\circ}$). Conclusion: Modified Grice-Green operative procedure is effective and satisfactory procedure for planovalgus deformity in children. but for more accurate results, more patients and further follow up period are needed.

• 대한인간공학회지
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• 제20권1호
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• pp.15-29
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• 2001

This study was conducted to develop a prototype of adjustable desk and chair for students from elementary to high school. The development process started with identifying the problems of existing adjustable desks and chairs that are currently available in the market. The following fundamental design criteria were established and then applied to develop the prototype. The criterion of minimization of production cost yielding lower the market selling price was the most critically considered in view of the school furniture buyers' price-consciousness. Other design criteria used in this development were designing for stable and solid structure, requiring few motions and no tools to adjust, requiring the use of only one hand to adjust, unrestricting the adjustable interval, providing extra space for foot and knee area, reducing weight to move easily, and requiring not to move around for cleaning up floor. To evaluate the performance of the prototype, the adjustability of prototype was specifically compared with both dimensions suggested by KS G 2010(Korean Standards for desks and chairs for students) and current anthropometric dimension in terms of the flexible range of accommodation. Results of this study illustrate that the prototype developed in this study could be accommodated for the both dimensions. As a concluding mark, appropriate adjustable range for various grades and age groups were presented.

• 패션비즈니스
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• 제22권4호
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• pp.93-105
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• 2018

Using FDM 3D printing, yarn shape and composition were modeled and 3D printed with PLA and TPU filaments currently used for apparel. Based on this, mechanical characteristics were measured to determine 3D printing yarn according to type of filaments in the 3D printed output and deformation and recovery characteristics due to differences in structure type. As a result of examining tensile and shear characteristics of PLA and TPU 3D printing compiles, TPU overall was measured with significantly lower stress than PLA. This is due to high elasticity of TPU's character, revealing that it has better flexibility than PLA. In addition, during deformation due to external forces, the more freedom between the head and foot parts of the loop, and the lower the force associated with each other, the more flexible it is. TPU revealed that it was easier to tension and recovery from tensile deformation than PLA, indicating potential for clothing materials using 3D printing. If high-molecular materials, such as PLA flexibility, it is likely to provide some flexibility through development of styles, including degree of freedom in modeling. Based on this, we provide basic data for developing 3D printing textures that can be satisfied with textile for apparel.

• 복식문화연구
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• 제16권6호
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• pp.1156-1168
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• 2008

This study investigated the preceding studies and concept of Glam Rock style, modernistically reinterpreted its aesthetic function and symbolism and connected them to design. It analyzed according to the standards for classification the Glam Rock style appearing mainly in the collections from 2002 S/S to 2007 S/S and presented four pieces of design through the analysis. Its findings are synthesized as follows. First, unstructured design constitutes mule stressing gold cubic overall. It takes an unstable form by the placement of unshapely front ball of foot from transforming Chopin and a relatively poor heel. Second, over trimming constitutes separated pumps in the form of over trimming irregularly a piece of broken glass, metal and thumb tack. Third, Mix & Match combines Boot body of flexible knit material with an acrylic wedge sandal. Fourth, a platform sandal has the structure of color contrast between yellow and bronze in calf fur of tiger-skin pattern. I hope that this study will be developed by reflecting Glam Rock spirit and style as cultural phenomena through analyzing Glam Rock style and presenting design according to selected standards for classification, inferring plastic beauty of fashion shoes from them, investigating the change and feature of age-specific shoe design and making a new attempt possible.

• 로봇학회논문지
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• 제18권3호
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• pp.241-250
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• 2023

This paper describes the posture stabilization control of a bipedal transformer robot being developed for military use. An inverted pendulum model with a rectangular that considers the robot's inertia is proposed, and a posture stabilization moment that can maintain the body tilt angle is derived by applying disturbance observer and state feedback control. In addition, vertical force and posture stabilization moments that can maintain the body height and balance are derived through QP optimization to obtain the necessary torques and vertical force for each foot. The roll and pitch angles of the IMU sensor attached to the robot's feet are reflected in the ankle joint to enable flexible adaptation to changes in ground inclination. Finally, the effectiveness of the proposed algorithm in posture stabilization is verified by comparing and analyzing the difference in body tilt angle due to disturbances and ground inclination changes with and without algorithm application, using Gazebo dynamic simulation and a down-scale test platform.

• 한국지능시스템학회논문지
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• 제16권4호
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• pp.443-448
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• 2006

본 논문에서는 이족 로봇 보행 중 전력 소비가 적고 안정한 저전력 보행 궤적 생성 방법을 재안하고, 생성된 보행 궤적의 구현을 위해 25 자유도를 갖는 이족 로봇을 설계 제작하였다. 본 논문에서 제안된 방법에서는 발목 사용 보행의 장점을 이용하고 보행 중 무릎을 크게 굽히는 동작을 줄이기 위해 기존 보행 방법과는 달리 우선 가장 안정한 VPCG 궤적을 생성 하고 생성된 궤적에 따른 발목과 골반의 보행 궤적을 생성한다. 이와 같이 함으로써 이족 로봇이 보행 중 항상 무릎을 굽히지 않으므로 전체 보행 중 전력 소비를 최소화 한다. 한편 제작된 이족 로봇은 발목 사용 시 지면과 잘 접지되는 발 구조와 골반을 유연하게 동작 할 수 있는 특징을 가진다. 마지막으로 이족 로봇의 실제 보행 실험 및 소비 전력 측정 결과, 본 논문에서 제안된 방법이 발목을 사용하지 않는 기존 방법에 비해 더 안정하고 전력 소비가 더 적음을 확인할 수 있었다.

• 한국HCI학회논문지
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• 제1권1호
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• pp.29-36
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• 2006

촉감 제시 방법은 다른 사람에게 방해를 주지 않고 은밀하게 정보를 전달할 수 있는 장점이 있으며, 특히 시각 혹은 청각 장애인에게는 반드시 필요한 정보 전달의 수단이다. 또한 촉감을 이용한 정보의 전달은 시각 또는 청각을 이용한 정보전달의 방법을 보완하거나 때로는 대체할 수도 있다. 본 논문에서는 웨어러블, 모바일, 또는 유비쿼터스 컴퓨팅 환경에서 사용할 수 있는 착용 가능한 진동촉감 제시 장치를 제안한다. 이 진동촉감 제시 장치는 25개의 진동모터를 $5{\times}5$의 형태로 배열하여 문자, 숫자뿐만 아니라 다양하고 복잡한 패턴을 표시할 수 있다. 코인형 진동모터 각각을 스펀지로 감싸고 푹신푹신한 재질의 패드에 세워서 배열하여 진동의 퍼짐을 최소화하고 사람의 글씨 쓰는 순서에 따라 진동모터를 순차적으로 구동시키는 새로운 추적모드를 제안하여 사용자의 문자 및 숫자 인식률을 크게 향상시켰다. 사용자 성능 평가에서는 사용자의 발등에 영문 알파벳을 표시하여 86.7%의 인식률을 얻었으며 주행 또는 주차 중인 운전자에게 방향 정보를 제시한 실험에서도 83.9%의 정답률을 확인하였다. 또한 진동촉감 제시장치를 이용하여 휴대폰에서의 발신자 정보표시를 한다거나 네비게이션 시스템에 적용할 수 있는 등의 유용한 응용분야를 제시하였다.