• International Journal of Costume and Fashion
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• 제3권
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• pp.89-105
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• 2003

The purpose of this study is to classify sleeves that play an important role in upper-garment designs and that can be presented in diverse shapes by meaningful era. Also, characteristics and trends of sleeves are analyzed to provide a basis for development of design on modem woman's dress. To examine formation and construction of sleeves, literature review and empirical examination were conducted, focusing on patterns of woman's dress presented in literature. This study is to concentrate on the period, the Renaissance to the 19C. In this study, characteristics of sleeves are analyzed by each era according to its shapes and construction. By analyzing the shape of sleeves and the characteristics of the construction of sleeves, the following conclusions had been reached. 1) Sleeves evolved from single, draped garments into dimensional shapes which were manipulated to reflect the changing trends. Considering the comfort and ease of movement have always been very important in clothing design and the construction of sleeves throughout the ages has consistently been able to provide the comfort that wearer demanded. 2) Shape of sleeves varies a little in each period, but recurring trends in fashion led to similar design in sleeves being repeated. Also, instead of a dramatic change in the construction of sleeves, each period had its own unique technique to add freshness by using a variety of ornamentation.

• 한국의류산업학회지
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• 제16권3호
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• pp.406-420
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• 2014

The goal of this study is to support the children's pants construction methods that secure clothing size and fit appropriateness through proposed improvements of denim pants construction method focusing on 4-year-old boys. Depths interview on the actual condition, measurements and calculations for positions and ease of the clothing points corresponding to the body points actually worn were conducted for 47 denim pants of nine boys. "Characteristics of the areas worn" and "physical characteristics of lower body" were analyzed, and improvements of 4-year-old children's denim pants construction method were proposed. As the results, the different figures in "characteristics of the areas worn" between the existing children's pants construction methods and children's actual wearing habits were found, and identification of distinct children's lower body from adults' supports that we should avoid tracing adults' methods without reasons. Children's pants construction method on basis of actual wearing should be devised to solve fit problems. Improvements of children's method were proposed such as ease of girth by different area worn, ease of "elastic waist girth", the difference between "elastic waist girth" and "pattern waist girth", and the difference between "pattern waist girth" and "pattern hip girth" as considerations of pants girth items, and appropriate position "clothing waist girth" "pants hip length" level, "pants crotch length" level, "clothing knee length" level, and "pants outside length" level for pattern making as considerations of clothing length items.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2007년도 춘계학술논문 발표대회
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• pp.67-70
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• 2007

As construction industry is requiring competitive power and technique in national construction market with rapid fluctuation of construction environment and development, requirements upgrading performance in construction materials are increasing. But, national lightweight aggregate and lightweight concrete's inappropriateness when produced are also increasing. And there are not international standard of aggregates in using these construction materials because standards and characteristics of aggregate in each countries are different. Therefore, in this study, lightweight aggregate acquired due to wide range of use is tested and mixed for concrete to gain practicality and set the authorized manual in international. Also, basic data will be proposed to set a standard for concrete by analyzing lightweight aggregate characteristics. When lightweight aggregate absorptivity is high, concrete shows low strength and when it's density is low, concrete shows low weight of unit volume. Furthermore, compressive strength of lightweight aggregate is steep in first and longtime material age is tendency to cause low strength increasing rate.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2004년도 제5회 정기학술발표대회 논문집
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• pp.203-209
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• 2004

최근에 도심에서 발생되는 건설공사의 경우 많은 민원을 야기하고 있으며 이에 사용되는 각종 건설기계들은 소음과 진동 $\cdot$ 분진을 유발하여 도심에서 발생되는 생활환경 오염원 중 가장 강력한 민원의 대상이 되고 있다. 따라서 도심에서 기초공사를 하기 위해서 저소음 $\cdot$ 저진동을 목적으로 하는 SDA(Separated Doughnut Auger, 분리형 도넛 오거말뚝)공법의 사용이 확대되고 있다. 하지만 SDA공법에 의해 발생되는 소음의 실태 및 전달특성이 파악되어 있지 않아 효과적이고 체계적인 차음대책 수립이 어려운 실정이다 따라서 본 연구에서는 기초 지정공사시 저소음 $\cdot$ 저진통 공법으로 점차 사용이 확대되고 있는 SDA공법에 의한 건설작업소음의 전달 및 감쇠특성을 파악하고, 이를 토대로 향후 효율적인 차음대책 수립을 위한 기초적인 자료를 제시하고자 한다.

• 드라이브 ㆍ 컨트롤
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• 제15권4호
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• pp.81-90
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• 2018

Indoor construction site such as building demolition sites, tunnel, vinyl house, and cattle shed are subject to various risk factors such as falling stones, soot and bad odors. However, most of the mini excavators have no cabin that can protect the driver from such risk factors. Therefore, researches on remote control technology of construction equipment are actively conducted as a method for protecting the driver from the risk factors occurring in the working environment. For effective remote control, it is necessary to be able to control the travelling and work using a portable small transmitter. However, due to the limitation of the size of the transmitter, complex operation control is required to control two or more actuators with a single joystick. Also, it is essential to check how remote control characteristics change in various environments such as distance, signal strength, obstacle. Therefore, in this study, an algorithm that can control two actuators simultaneously with a single joystick signal was developed, and a communication method suitable for indoor and outdoor mini construction equipment by analyzing experimentally how the remote control characteristics vary according to various work environments and telecommunication methods proposed.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2023년도 봄 학술논문 발표대회
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• pp.121-122
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• 2023

Existing modular research has been mainly focused on S (shelter structure) and I (infill interior finishing material), and considerable research has been conducted, and the results are being proposed. However, in the case of the rest (exterior materials and windows, etc.), existing construction methods and materials are borrowed, and supporting hardware members and insulation materials are constructed on site, which acts as a factor hindering overall shortening of the construction period. That is, since the advantages and characteristics of modularity cannot be utilized in the absence of modular cladding, manufacturing of cladding is required. Therefore, it is necessary to develop a cladding system that can drastically reduce the construction period in factories while considering the structural characteristics of PC modulars.

• 대한건축학회논문집:구조계
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• 제35권1호
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• pp.47-56
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• 2019

As the zero interest rate era was over with the end of quantitative easing, the economy of several global markets observed the fluctuations of the base interest rate. Interest rate, which is the change of money value with respect to time, is negatively correlated with construction investment. Considering the characteristics of interest rates and construction investment as economic variables, the necessity of cross-border analysis between base interest rate and construction investment was suggested in this paper. Cross-correlation analysis between base interest rates and construction investment crossing the border was performed. The effective correlations were confirmed with values varying by countries. Similar characteristics were also observed among countries with similar economy, which were then divided into three groups. Additionally, identifying the base interest rate that affects the construction investment of a particular country was made possible by reflecting a self-cycle of base interest rates. Lastly, from the result of examining the influence of each rise and fall of the interest rate, it was verified that the difference was more than twice as large in some countries. These results are expected to contribute to construction-related policy makers or investors to make decisions in response to the economic status of the construction market.

• 한국지반환경공학회 논문집
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• 제24권5호
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• pp.5-12
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• 2023

최근에는 도시개발 및 확장으로 지하철, 도로, 대형관로 등 기존 터널 구조물에 인접하여 건설 계획이 증가하고 있다. 기존 터널에 인접한 구조물 계획은 신규 구조물의 시공방법 및 인접 정도, 위치에 따라 터널 안정성 미치는 영향이 다르다. 특히 압력 수로터널은 지반 거동 특성 및 운영 특성에 있어 도로터널 및 철도터널과는 매우 큰 차이를 보인다. 따라서 수로터널의 거동 특성 및 신규공사 공법을 고려하여 근접시공으로 인한 안전영역에 대한 재검토가 필요하다. 본 연구에서는 기존 터널 인접 시공 기준을 조사하고 수로터널 특성을 고려하여 안정성 평가를 수행하였다. 안정성 평가는 운용 중인 터널의 콘크리트라이닝의 열화를 고려하여 수치해석적 방법으로 평가하였다. 또한, 신규 구조물의 말뚝 시공 및 발파굴착에 의한 진동 영향을 검토하여 인접 시공방법에 따른 기존 터널 안정성이 확보되는 영역을 검토하였다. 국내 다양한 근접시공 영역에 대한 기준을 바탕으로 운용 중인 수로터널 특성을 반영하여 안전영역을 재검토하였으며, 이를 바탕으로 근접 안전 시공범위를 제시하였다.

• Journal of Electrochemical Science and Technology
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• 제14권3호
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• pp.205-214
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• 2023

Soil salinity is becoming one of the most devastating environmental hazards over the years. Soil investigation involves fast, low cost and non disturbing methods to measure soil characteristics for both construction projects as well as for agricultural use. The electrical resistivity of saline soils is greatly governed by salt concentration and the presence of moisture in soil matrix. Experimental results of this investigation highlight that there is a significant relationship between the electrical resistivity of soil samples mixed with chloride solutions (NaCl, KCl, and MgCl₂) at various concentrations, and soil physical properties. Correlations represented by quadratic functions were obtained between electrical resistivity and soil characteristics, namely, water content, degree of saturation and salt concentration. This research reveals that the obtained correlations between electrical resistivity, salt concentration, water content and degree of saturation are effective for predicting the characteristics of salt affected soils in practice, which constitute a governing element in the assessment of saline lands sustaining infrastructure.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2002년도 가을 학술발표회 논문집
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• pp.3.1-14
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• 2002

Many human lives and properties have been damaged by the annually occurring natural disasters. Among them, a typhoon accompanying a gale and a localized torrential downpour induce a first order damages. In this study, states, scales and other characteristics of slope failure induced by the typhoon Rusa, which damaged the whole Korea peninsular on August 30th for 3 days, were analyzed. In addition, permanent measures for slope failure are conducted to prepare natural disasters. Since the key factor on the slope failure is considered to be a rainfall. The characteristics of domestic rainfall and typhoon are investigated, and then failure forms and some characteristics of slope failure are analyzed. By comparing with the data of existing slopes, the hazard of slope failure is examined. There fundamental results could be applied to the future measures of slope failure.