• Structural Engineering and Mechanics
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• 제85권1호
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• pp.89-104
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• 2023

This work presents a proposal for employing reduced numerical integration in the formulation of the 4-node quadrilateral solid finite element. The use of these low-order integration rules leads to numerical instabilities such as those producing the hourglass effect. The proposed procedure allows evaluating a given constitutive model only in one integration point, achieving an attractive computational cost reduction and, also, successfully controls the hourglass effect. A validation of the proposal is included and discussed throughout the paper. To show the efficiency of the proposal, several application examples of masonry structures are studied and discussed. To represent the non-linear mechanical behaviour of masonry a plastic-damage model is implemented within the application of this sub-integration scheme. Also, in order to have a full and computationally efficient strategy to determine the behaviour of masonry structures, involving its evolution to collapse, a homogenization technique with a macro-modeling approach is used. The methodology discussed throughout this paper demonstrates a substantial computational cost reduction and an improved approximation of the non-linear problem evidenced by a reduction of up to 85% of the computational time for some cases.

• 한국의류학회지
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• 제47권3호
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• pp.409-424
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• 2023

This study aimed to reveal prospective fashion designers' predominant perceptions regarding the ideal body size and shape and to suggest an educational guideline for the design process. Sketch tasks and surveys involving the college students in a fashion design department were conducted over the course of a year. A total of 113 participants designed a white cotton shirt for women in their 30s and 40s. Immediately after the sketching task, the participants answered survey questions on the specific body sizes and shapes they had been picturing. According to the results, the participants designed shirts for a medium-sized, hourglass body shape. As the percentage of women in their 30s and 40s with an hourglass shape is low, a discrepancy exists between the ideal design and the body of the actual consumer. Furthermore, 55% of the participants indicated that they would change the design for a woman with a different body shape. The majority of the participants agreed that understanding the body shape and size is important when initiating ideas. These findings can help educators understand the importance of improving designers' awareness of various body sizes and shapes; they also suggest new directions for fashion design education.

• Korean Journal of Radiology
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• 제25권5호
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• pp.449-458
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• 2024

Selective fascicular involvement of the median nerve trunk above the elbow leading to anterior interosseous nerve (AIN) syndrome is a rare form of peripheral neuropathy. This condition has recently garnered increased attention within the medical community owing to advancements in imaging techniques and a growing number of reported cases. In this article, we explore the topographical anatomy of the median nerve trunk and the clinical features associated with AIN palsy. Our focus extends to unique manifestations captured through MRI and ultrasonography (US) studies, highlighting noteworthy findings, such as nerve fascicle swelling, incomplete constrictions, hourglass-like constrictions, and torsions, particularly in the posterior/posteromedial region of the median nerve. Surgical observations have further enhanced the understanding of this complex neuropathic condition. High-resolution MRI not only reveals denervation changes in the AIN and median nerve territories but also illuminates these alterations without the presence of compressing structures. The pivotal roles of high-resolution MRI and US in diagnosing this condition and guiding the formulation of an optimal treatment strategy are emphasized.

• 한국항행학회논문지
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• 제1권1호
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• pp.81-94
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• 1997

우리나라의 급증하는 항공수요 처리와 동북아 지역 허브 공항 역할을 하기 위한 목적으로 인천국제공항이 건설되고 있다. 그러나 동북아지역 각국에서는 대규모 공항건설 및 수용능력 확장 사업이 추진되고 있어 인천국제공항이 성공적인 허브 공항으로 자리매김하기는 쉬운 일이 아니다. 특히 일본은 우리나라에 비해 월등히 많은 항공수요량을 바탕으로 신동경국제공항(나리타 공항)에 이어 오오사카 간사이 공항을 새로운 허브 공항으로 발전시키기 위한 계획을 추진하고 있다. 따라서 인천국제공항은 일본의 공항들과 동북아지역 허브 공항 경쟁을 하여야 한다. 공항의 허브 기능은 배후지형(hinterland) 허브 기능과 모래시계형(hourglass) 허브 기능이 있다. 성공적인 배후지형 허브 공항이 되기 위해서는 근거리 국내, 국제노선에 대한 풍부한 비행편이 존재해야만 한다. 인천국제공항운영자는 동 공항과 중국, 일본, 근거리 동남아 지역 주요 도시간의 비형편이 일본의 경쟁 공항을 이용하는 것보다 유리하도록 해야 할 것이다. 모래시계형 허브 기능으로서는 지리적 위치상 원거리 동남아 지역과 미주지역을 연결시켜주는 징검다리로서의 역할이 가능하다. 여기서도 경쟁 공항과 비행편 스케쥴링 전략에서 이겨야 하는데, 공항당국과 국적 항공사의 긴밀한 협조에 의한 수요개발과 외국(미국, 동남아) 항공사들과 국적항공사(대한항공, 아시아나 항공)간의 운항 제휴 등이 효과적 스케쥴링으로 결과될 수 있을 것이다. 정부의 항공당국도 외국과의 항공협정이나 국가 항공정책 수립시 일본의 정책을 고려하고 공항 당국 및 국척항공사의 의견을 수렴하여 인천국제공항이 동북아 허브 공항으로서 성공할 수 있도록 해야할 것이다.

• Journal of Chest Surgery
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• 제18권4호
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• pp.615-622
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• 1985

Supravalvular aortic stenosis was relatively uncommon form of congenital heart disease. This patient had typical "elfin faces" with mental retardation, and supravalvular aortic stenosis. The diagnosis was confirmed by pressure tracing obtained at retrograde left heart catheterization and aortography. The type of supravalvular aortic stenosis was localized hourglass narrowing, which was treated by insertion of prosthetic gusset placed across the area of narrowing under the cardiopulmonary bypass.ry bypass.

• 한국의류학회지
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• 제37권6호
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• pp.799-808
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• 2013

Previous research reported that body size measured as Body Mass Index (BMI) and body shape measured as waist-hip-ratio (WHR) are two essential factors that form the perceptions of body attractiveness. However, the debate on the importance of BMI versus WHR is ongoing. In addition, scholarly articles, that focus on the role of geographic and cultural variability on perceptions of attractiveness, report inconsistent results. Some suggested that according to globalization and the rise of mass media, geographic variability of perceptions of attractiveness have been altered, while others believed that it remains. This study cross-regionally investigates the role of body size and body shape on the perceptions of female attractiveness. Samples were composed of 107 female college students in Alabama and 107 female college students in California. Participants viewed 27 three-dimensional body scan images of women in three body shapes (pear, hourglass, and rectangle) and three body sizes (underweight, normal weight, and overweight) and rated their perceptions of attractiveness. Images were shown to students in a random order with an overhead projector and Microsoft Office PowerPoint software. A three-way mixed-ANOVA was conducted to analyze the data. The results of the study showed that some regional differences exist between the two sample groups. However, regardless of the regional difference, hourglass shapes were perceived to be the most attractive shape and underweight sizes were perceived to be the most attractive size for both samples.

• Archives of Plastic Surgery
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• 제33권5호
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• pp.655-658
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• 2006

Purpose: The main goals of correcting syndactyly of the hand are to form normal web appearance and to prevent motor dysfunction. We modified the original three-square-flap to improve interdigital web space and to reduce the wound healing problem due to tension. Methods: From July 2005 to February 2006, three cases of moderate to minor syndactyly were treated using modified three-square-flap. These flaps were made in such as way that the A flap from dorsal side, the B flap from the interdigital surface, and the C flap from the volar side. We modified the design of dorsal A flap as a hourglass shape instead of square shape to make normal hourglass shaped interdigital web and to reduce the tension of closure with other two flaps(B and C flap). The B and C flap were made as square shape. Results: During 4 to 10 months follow-up period, acceptable esthetic results were obtained without any specific complication, using our modification of the three-square-flap. Conclusion: Our method showed more satisfactory web appearance and was safe to use even in the cases of syndactyly secondary to burns and post-traumatic scars because of excellent blood circulation.

• 구강회복응용과학지
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• 제22권2호
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• pp.193-202
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• 2006

Objective To evaluate the influence of water storage on the mechanical properties of dental adhesives over 1 and 3 months. Materials and Methods Adhesive resin sheets were prepared by pouring either All-bond 2(AB), Clearfil SE Bond(SE) into a mold measuring $15{\times}15{\times}0.9mm$. After solvent in primer evaporation, the adhesives were light-cured and removed from the mold and divided in two pieces, trimmed to hourglass shape that were used to determine the micro-tensile strength(MTS). Another hourglass shaped metal mold measuring $2.0{\times}1.5mm$ in cross-section area was made to determine the Young's modulus(E). Adhesive specimens for Young's modulus(E) were prepared in the same method. Specimens were stored at $37^{\circ}C$ in distilled water and tested after 1 and 3 months. The data were analyzed by one-way ANOVA and Tukey's test. Results Water storage significantly decreased the micro-tensile strength(MTS) of AB and SE specimens after 1 and 3 months(P<0.05). The Young's modulus(E) were also decreased after water storage for 1 and 3 months, but statistically not significant in each group of AB and SE group respectively. Conclusions Long-term exposure of adhesive resin to water can cause reduction of mechanical properties. It may compromise resin/dentin bonds and affect longevity of restorations.

• 복식
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• 제57권9호
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• pp.161-176
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• 2007

The objectives of this study are to select and analyze unpublished wedding dresses in the 19th century, to investigate the design characteristics and making techniques of Victorian wedding dresses, and to examine the correlation between the wedding dress style and the fashion style in those days and the influence of the wedding dress style on contemporary's styles. The materials of this study were 9 wedding dresses owned by the Historical Costume and Textile Collection at the University of Connecticut in USA. The dresses were made during the mid and late Victorian Age. As for silhouette, the bustle style was popular in the 1870s and 1880s, and the hourglass style in the 1890s, and different from contemporary dresses there were no big differences in structural pattern and details between ordinary dresses and wedding dresses. In addition, colored wedding dresses were used until the mid and late Victorian Age, but since the wedding ceremony of Queen Victoria in 1840, white wedding dress was widely accepted and settled as the tradition of today's wedding dresses. While the Western dress style had been basically a one piece style, there appeared simple two piece designs in which the upper garment was separated from the lower one, from the mid Victorian Age. This is considered the reflection of those days' pragmatic social trend in dress style. It seems around 1875 when asymmetric design was first introduced in the Western dress style, which had been mostly symmetric. The asymmetric style that pursued atypical beauty, though not common during the late Victorian Age, shows a change in the typical Western dress style. With regard to dress making techniques, sewing machines were distributed widely during the early Victorian Age but they were not used in all parts of dress. Most of details and trimming works were done manually and some parts were attached and detached by hand sewing. In addition, not like today, there were no generalized rules of making such as the form of closings and composition.

• 한국지역사회생활과학회지
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• 제23권3호
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• pp.221-231
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• 2012

To find the differences between the real somatotype and the ideal somatotype, WHR(Waist to Hip Ratio), WCR(Waist to Chest Ratio), and body cathexis were analysed by using ANOVA test, Duncan's multiple range test, and $x^2$ test. Fashion image sought by female collegians was surveyed, too. The results were as follows. WHRs in slim, usual, fat body type were 0.75, 0.76, and 0.83 and WCRs were 0.77, 0.81, 0.80. The respondents who considered themselves to be overweight recognized themselves to be fatter than their real weight. They were not satisfied with their bust girth in slim body type, thighs and calves in usual body type, and all parts except for foot length, hand length and arm length in fat body type. 60% of the thin people considered their body hourglass shape, 30.4% of regular people recognized their body triangle type, 43.8% of fat people thought their body was round form. They thought current ideal body size was bigger in height and bust girth and smaller in waist girth and hip girth, and weight than real body size. Also they responded ideal body shape was an hourglass type independent of somatotype. The pursuit of clothing image was that 45.5% of female collegians were fashionable and raffine and 10.4% of female collegians was elegant and graceful. Among the body area, body parts that may have an effect on body image were body length in 13.1% of the respondents, waist girth in 10.7% of the respondents, and hip girth in 10.0% of the respondents.