• Journal of Power System Engineering
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• v.15 no.5
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• pp.61-66
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• 2011

Recently, the speed reducer which is applied to robot has conducted a steady development on developments in the field of robotics. Among them, Harmonic drive is a high-stiffness, precision-controlled speed reducer and has high precision, compact, light in weight and high-reduction-ratio characteristics. The feature of flexspline of Harmonic Drive are two types. One is Cup type, the other is Silk Hat type. Silk Hat type is used in case of lighter and more compact in spatial because Silk Hat Type is hollow. According to the shape of silk hat, diaphragm is fractured because stress is concentrated. In this paper, the various shapes of silk hat are suggested to improve the durability of silk hat. And in the case of each shape, a study on stress and deformation using the FEM tool was carried out on flexspline.

• Journal of the Korea Fashion and Costume Design Association
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• v.7 no.3
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• pp.129-144
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• 2005

The purpose of this research was to find out the effect of hair-style(straight and wave), hair-length(short, medium and iong), and type of hat design(no-hat, beret, cloche, bowler and capeline) on the impressions of hat's wearer . The experimental materials developed for this study were a set of stimulus and response scales(7-point scale semantic). Thirty stimuli color pictures of various combination of hair length, hair style, and type of hat design were manipulated by computer drawing. The subjects were 360 undergraduate students in Seoul, Kyunggi and Kyungnam. The result of this study can be summarized as follows; Impression factor of the stimulus consisted of the 5 different dimensions (attractiveness, gracefulness, brightness, visibilty, cuteness). Each impression of type of hat design, along with hair-style, hair-length had significant effects on gracefulness, visibilty and cuteness. Each impression of hair-style, hair-length, along with type of hat design had significant effects on gracefulness, brightness, visibilty and cuteness. Thus type of hat design, hair-style and hair-length have a significant influence on the impression evaluation of hat's wearer.

• The Research Journal of the Costume Culture
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• v.12 no.3
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• pp.354-368
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• 2004

The purpose of this study is to investigate the effect of Shirts-color(Different-color, Same-color) and Hat color(Red, Blue, Beige, Grey), Hat design (Beret, Cloche, Bowler, and Capeline) on impression formation. The experimental materials developed for this study were a set of stimulus and response scales. The 7-point semantic thirty stimuli color pictures of various combination of hair length, hair style, and type of hat design were manipulated by computer drawing. The subjects were 360 undergraduates living in Seoul, Kyunggi and Kyungnam. The experimental design was composed of 3 factorial designs. The result of the study can be summarized as follows; Impression factor of the stimulus consisted of the 5 different dimensions. (concentration of attention, attractiveness, gracefulness, activity, tenderness). Concentration of attention, elegance, and tenderness in case of a hat as a clue, elegance and tenderness in case of the color of upper clothes as a clue, and all the factors except attractiveness and elegance in case of the type of hat as a clue were significant factors to differences of appearance. In regarding the effect of interaction between each variable, the combination of Hat color and Shirts-color had significant effects on tenderness, Hat color and type of hat design on concentration of attention, elegance and activity.

• Journal of the Korea Fashion and Costume Design Association
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• v.18 no.4
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• pp.141-158
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• 2016

The objective of this study is to examine the type and characteristics of hat, and also to analyze the formative characteristics of hats shown in $Pr{\hat{e}}t-{\grave{a}}$-porter Collection. The literature review focused on the relevant technical books and preceding researches while the case study targeted 1,561 photos of hats shown in the 'Donga TV Collection'. The research range was from the S/S season of 2012 to the F/W season of 2015/16. The results of this study are as follows. 1. A hat is composed of crown and brim. In the results of classifying hats based on it, there were 572 crown-type hats, 533 hat-type, 219 cap-type, 156 irregular-type, and 81 brim-type in the order. 2. For the crown-type hats, they were mainly like cylindrical-type, bell-type, dome-type, and circle-type, using colors like black, beige, brown, red, mustard, and grey, and materials like wool, fur, velvet, straw, and metal while they were decorated with bead or lace. 3. For the hat-type hats, they were mainly like bell-type, ladder-type, and hemisphere-type, using colors like peach, white, gold, brown, and khaki, and materials like silk, cotton, straw, and wool while they were decorated with feather and ribbon. 4. For the cap-type hats, they were mainly like hemisphere-type, using colors like white, black, khaki, mustard, and purple, and materials like fur, leather, and wool while they were decorated with wappen and chain. 5. For the irregular-type hats, they were mainly like sandglass-type, box-type, animal-type, trumpet-type, and bell-type, using colors like purple, orange, pink, yellow, and sky-blue, and materials like metal, feather, mesh, plastic, straw, and linen while they were decorated with ribbon, net, bell, and flower. 6. For the brim-type visor, they were mainly like square-type, using colors like transparent, yellow, and black, and materials like plastic, cotton, leather, and metal.

• Journal of the Korean Society of Clothing and Textiles
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• v.28 no.3_4
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• pp.460-471
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• 2004

The purpose of this study is to investigate the effect of hair-style (straight and wave), hair-length(short, medium, and long), and type of hat design (no-hat, beret, cloche, bowler, and capeline) on impression formation. The experimental materials developed for this study were a set of stimulus and response scales. The 7-point semantic differential response scales were designed. Thirty stimuli color pictures of various combination of hair length, hair style, and type of hat design were manipulated by computer drawing. The subjects were 360 undergraduates living in Seoul, Kyunggi and Kyungnam. The experimental design was composed of 3 factorial designs. The result of the study can be summarized as follows; Impression factor of the stimulus consisted of the 5 different dimensions (attractiveness, gracefulness, activity, concentration of attention, cuteness). Hair style greatly affected gracefulness. On the other hand, hair length made remarkable effects on attractiveness, concentration of attention, and cuteness. In addition, it has been found that the type of hat design significantly influenced on all the factors except attractiveness as independent variables. In regarding the effect of interaction between each variable, the combination of hair style and hair length had significant effects on gracefulness. In the impression formation of cuteness, the combination of hair length and type of hat design were more significant.

• Journal of Fashion Business
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• v.11 no.6
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• pp.24-34
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• 2007

This study aims to suggest basic data for the production of hats for aged women. The subjects were 151 females who are 60 years old or above and live in Busan. Their hat-wearing reality was inquired and their head parts were measured, which led to the following conclusion: 1. Results of Hat-Wearing Reality Inquiry 64.9% answered they are unsatisfied with the size system of the available hats at present, implying the necessity for improving the current dimension system. 92.7% responded hat dimensions need to be subdivided, while 97.4% were for the necessity of hat size system. 74.8% expressed their will to buy ordered hats because they can find the hats of right sizes and designs. 2. Results of Head-Part Measurement Experiments According to head-part measurement, head circumference A was 53.26cm, head circumference B 54.19cm, and head circumference C 57.69cm on the average. Cluster analysis revealed three types. Type 1 (24%) with small head length and circumference is the smallest head with a wide upper part. Type 2 (33%) has long head height, short bitragion arc A, and thick head breadth. Type 3 (43%), owing to big head circumference and length as well as high values in vertical items. Considering head circumference B (HCB) and bitragion arc A (BAA), a new hat size system of 3 sizes (HCB: BAA) was chosen: S (52cm: 29cm), M (53-55cm: 30cm), and L (56-57cm: 31cm).

• Communications for Statistical Applications and Methods
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• v.26 no.2
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• pp.91-102
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• 2019

In this paper, we propose a new estimation method based on a weighted linear regression framework to obtain some estimators for unknown parameters in a two-parameter Rayleigh distribution under a progressive Type-II censoring scheme. We also provide unbiased estimators of the location parameter and scale parameter which have a nuisance parameter, and an estimator based on a pivotal quantity which does not depend on the other parameter. The proposed weighted least square estimator (WLSE) of the location parameter is not dependent on the scale parameter. In addition, the WLSE of the scale parameter is not dependent on the location parameter. The results are compared with the maximum likelihood method and pivot-based estimation method. The assessments and comparisons are done using Monte Carlo simulations and real data analysis. The simulation results show that the estimators ${\hat{\mu}}_u({\hat{\theta}}_p)$ and ${\hat{\theta}}_p({\hat{\mu}}_u)$ are superior to the other estimators in terms of the mean squared error (MSE) and bias.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.1
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• pp.103-109
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• 2007

A new steel sheet pile of wide hat-type was developed. Advantage of using wide type of sheet pile is reducing steel weight and consequently cutting down construction cost. Field driveability tests were conducted in order to verifying vibro-driveability of wide hat-type sheet pile. As a result of the tests, penetration rates of newly developed sheet piles were less than those of U-type sheet piles. Axial stresses developed in sheet pile during driving were fur less than yield stress of sheet pile. Futhermore, initial penetration rates of sheet piles were much larger than those obtained from WEAP program.

• Journal of Korean Association for Spatial Structures
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• v.15 no.3
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• pp.85-93
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• 2015

This paper presents a foundation pile to steel column connection that can resist large magnitude of moment and that can be easy installed. The developed joint has spherical shape and it is given the name HAT joint to mean Hallow half-sphere steel joint. Four types of HAT joints are developed. Namely, H-type, T-type, P-type and K-type. In this paper I will talk about the performance assessment of T-type(Tube Column) and P-type(Pile Column) of HAT joints with finite element analysis and experiment on a full scale model is presented.

• Journal of the Korean Society of Costume
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• v.51 no.4
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• pp.57-69
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• 2001

The purpose of this study is to examine the costume represented In human clay figures of ancient Shilla dynasty. The results of this study could be summarized as follows: 1. Horse-riding clay figures of Gumryoung tomb. At first, human-A wears a brimed-triangular hat, a Jacket, a checked pants. The brimed-triangular hat is decorated with bird-feather shape. Besides, a jacket is tied with a waist belt, and the waist belt is connected with a shoulder belt and a squared block of back. Also round bells are decorated 15 in the hat, 4 In connection points of the waist belt and the shoulder belt, and 13 in the squared block of back. Human-B wears a hairband type hempen hood, a Jacket, a pants with vertical stripes. and something is rounded from right shoulder to left side. It is one of the symbols as a shaman. 2. Other clay figures. The hats examined from other clay figures are \circled1 Triangular hat, \circled2Hat decorated with bird-feather shape, \circled3 Brined hat and \circled4 Hairband type hempen hood. Next, six kinds of hair styles examined are \circled1 a topknot, \circled2 a slanted topknots, \circled3 two topknots on both sides, \circled4(round) chignon, \circled5 hair tied at the top and plastered down, and tile last, \circled6 ponytailed style on both sides. The costume examined is a jacket and a pants.