• 대한화장품학회지
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• 제44권3호
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• pp.285-293
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• 2018

코아세르베이트의 구조는 모발의 오일 및 폴리머 같은 기능성 성분 흡착에 매우 큰 영향을 준다. 본 연구의 목적은 알킬 셀룰로오스와 구아검 간 복합 코아세르베이트의 혼합물에서 그 구조적인 결합의 특성을 밝히는데 있다. 모발에 흡착되면 모발에 뻣뻣함을 부여하는 구아검 컨디셔닝 폴리머가 오일과 함께 알킬 셀룰로오스와 혼합될 경우 동일 함량 및 알킬 셀룰로오스와의 비가 3 : 1일 경우에 모발을 매우 부드럽게 함을 발견하였다. 이는 글루코스링을 백본으로 하는 양이온 알킬기 셀룰로오스 폴리머와 구아검 폴리머를 혼합하여 오일을 결합시키면, 알킬 셀룰로오스의 친수성 부위와 음이온 계면활성제가 정전기적으로 결합하고, 알킬 셀룰로오스의 4급 알킬 암모늄기에 포함되는 알킬기가 계면활성제의 소수성 부위와 함께 결합함과 동시에, 구아검 코아세르베이트가 전체적으로 안정적인 구조를 이루게 하여 많은 양의 코아세르베이트를 생성하게 하는 것을 코아세르베이트 생성양 측정 및 모발 유연성 증대를 통해 확인하였다.

• 한국의상디자인학회지
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• 제12권4호
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• pp.197-206
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• 2010

The purpose of this study is to dye hanji/cotton fabrics using persimmon juice and to investigate the change in the hand fabrics. Using the Kawabata Evaluation System, we have examined the changes in the physical properties, primary hand value and total hand value. The dynamic characteristics of hanji/cotton fabrics have been explored by tensile, shear, bending, compression, surface properties, thickness and weight. As a result, it can be seen that the linearity of load-extension and tensile resilience are increased with the increase of the concentration and dyeing times of persimmon juice and tensile energy is decreased in the same condition. These behaviors are shown in the compression properties. Although the mechanism of persimmon juice dyeing has been widely discussed, it means that the fabrics dyed with persimmon juice become stiffened and the elasticity is increased with the introduction of persimmon on the fabrics studied. Bending rigidity and hysteresis of the bending moment are increased with the increase of the concentration and dyeing times of persimmon juice. Also, Geometrical roughness, expressed in SMD is increased with increasing the concentration and dyeing times of persimmon juice, compared with as-received. It indicates that these results are due to the geometric structure of hanji yarn and the introduction of persimmon juice on the fabrics studied. The fullness and softness with the soft feeing are increased a little due to the tannin component of persimmon juice introduced on the fiber surface.

• 패션비즈니스
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• 제7권4호
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• pp.121-128
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• 2003

A new textile material, poly(trimethylene terephthalate) polymer, has been introduced to the textile industry. The structure of PTT is similar to the PET, while the tensile deformation and subsequent recovery property is better than that of PET. In this study, the physical and mechanical properties of textile woven fabrics made of PTT, PET, and nylon 6 yarns as the filling yarn were determined using the Kawabata Evaluation System (KES), including tensile, bending, shearing, compression, and surface related parameters. On top of these measurements, the subjective ratings by evaluators were performed on the fabric samples. From the examination of the stress-strain behavior of the yarn specimens focused on the recovery mode, it was evident that the PTT specimen developed lower stress at 3% elongation. The subsequent recovery curve showed that the PTT has less stress-decay rate than the other specimens, implying that the recovery behavior of the PTT is recommendable for the end-uses including stretchable textile materials, sports wears, etc. The KES bending rigidity(B) value of the PTT sample fabric was lower than that of the PET sample fabric. Subjective evaluation of the fabric samples by the evaluators on the descriptive word pair "soft - not soft" showed similar tendency with the KES B determination of the fabric samples.

• 패션비즈니스
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• 제20권2호
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• pp.124-133
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• 2016

Currently the fashion industry is developing to create a novel culture due to the very sensitive and knowledge-oriented advancement of the IT industry. With fast turnover of information, consumers have come to have a more diverse desire for purchasing. Cubical expression techniques, which empathizes formativeness, can be a creative expression method adjusting into the trend of this era. Along with functional aspects of consumers, even in a textile manufacturing sector, new materials are required to meet sensitive and emotional aspects. Consumers' desire for new and creative designs and the development and adoption of new materials are essential to meet their emotions. The IT industry and fashion industry are forced to combine and a 3D apparel CAD system has been developed, enabling virtual clothing to be represented within a computer virtual space. All processes such as design, pattern creation, sewing and simulation are possible in 3D level. Digital clothing can shorten the production process time and is very effective in that it can reduce clothing waste generated during the sample production. This paper reviewed the works of Dutch designer, Iris van Herpen, who has developed formative designs. She tries to build, construct, and sculpt employing diversified materials other than soft textile materials, as shown in her series of fashion shows. The materials include films, 3D printed polymers, stiff and sheer organza, and artificial leather textiles. A few characteristics of her works have been selected in order to prepare patterns exhibiting the traits. The paper further focused on the physical features of the textile materials used to express similar techniques and its various forms were reviewed.

• 대한인간공학회지
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• 제35권6호
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• pp.493-501
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• 2016

Objective: This study analyzes the effect of angle conditions of rehabilitation equipment used for supporting hemiplegic patients on their rehabilitation training for standing action. The study was performed by adjusting the rear angle of seat inclination through a motion analysis. Background: Owing to a loss of muscle rigidity and degradation of muscle control ability, hemiplegic stroke patients suffer from asymmetrical posture, abnormal body balance, and degraded balance abilities due to poor weight-shifting capacity. The ability to shift and maintain one's weight is extremely essential for mobility, which plays an important role in our daily life. Thus, to improve patients' ability to maintain weight evenly and move normally, they need to undergo orthostatic and ambulatory training. Method: Using a motion analysis system, knee movements on both hemiplegic side and non-hemiplegic side were measured and analyzed in five angles ($0^{\circ}$, $10^{\circ}$, $30^{\circ}$, $50^{\circ}$, $70^{\circ}$) while supported by the sit-to-stand rehabilitation equipment. Results: The knee movements on both sides increased as the angle increased in angle support interval to support a hemiplegic patient's standing up position. In standing up interval, a hemiplegic patient's knee movement deviations on both sides decreased, and the movement differences between hemiplegic and non-hemiplegic legs also decreased as the angle increased. Conclusion: The results of this study showed that the rehabilitation effectiveness increases as the angle increases, leading to a balanced standing posture through the decrease of movement difference between hemiplegic and non-hemiplegic sides and an improved standing up ability through the increase of knee movement on both sides. However, angles higher than $50^{\circ}$ didn't provide a significant effect. Therefore, a support angle under $50^{\circ}$ was proposed in this study. Application: The results of this study are expected to be applicable to the design of sit-to-stand support equipment to improve the effectiveness of the rehabilitation process of hemiplegic patients.

• 대한토목학회논문집
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• 제37권1호
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• pp.255-268
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• 2017

많은 도시들은 각각 상이한 지리적, 공간적, 환경적 특성들을 가지고 있다. 이러한 특성들은 각 공간마다의 고유한 장소성을 나타내는 요소이며, 도시계획 및 개발이 행해질 때 충분히 반영되어야 한다. 그럼에도 불구하고 이는 실질적으로 계획에 반영되지 못하는 부분이 많으며 그로 인해 뜻밖의 무장소성의 공간이 만들어지기도 한다. 특히 항구도시에서의 항만공간은 해당 도시의 문화적, 역사적, 지리적, 환경적 특성이 매우 강한 곳으로 다른 공간과 다른 독창적이고 특화된 공간이 만들어 져야 한다. 이에 항만공간만의 장소성을 부각시키기 위해 물리적 요소 뿐만 아니라 사회적 요소 또한 적극 반영해야 할 것으로 사료된다. 본 연구에서는 기존의 용도지역지구제가 가지고 있는 제도 자체의 경직성을 탈피하고, 보다 유연한 도시계획적 접근방안 모색을 위해 대두되고 있는 FBCs를 활용하였다. 또한 항만공간의 장소성 형성을 위한 요소를 도출하고, 각 항만공간의 장소성을 구축하였다.

• Ocean Systems Engineering
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• 제10권1호
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• pp.67-86
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• 2020

The main goal of this study is to investigate the free vibration analysis of a large sag catenary with application to the jumper in hybrid riser system. The equation of motion is derived by using the variational method based on the virtual work principle. The finite element method is applied to evaluate the numerical solutions. The large sag catenary is utilized as an initial configuration for vibration analysis. The nonlinearity due to the large sag curvature of static configuration is taken into account in the element stiffness matrix. The natural frequencies of large sag catenary and their corresponding mode shapes are determined by solving the eigenvalue problem. The numerical examples of a large sag catenary jumpers are presented. The influences of bending rigidity and large sag shape on the free vibration behaviors of the catenary jumper are provided. The results indicate that the increase in sag reduces the jumper natural frequencies. The corresponding mode shapes of the jumper with large sag catenary shape are comprised of normal and tangential displacements. The large sag curvature including in the element stiffness matrix increases the natural frequency especially for a case of very large sag shape. Mostly, the mode shapes of jumper are dominated by the normal displacement, however, the tangential displacement significantly occurs around the lowest point of sag. The increase in degree of inclination of the catenary tends to increase the natural frequencies.

• 한국산학기술학회논문지
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• 제10권9호
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• pp.2492-2500
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• 2009

본 연구에서는 베트남전 참전 군인 중 고엽제 후유(의)증 환자와 한국전쟁 참전 상이군인을 대상으로 전반적인 심리적 특성을 파악하기 위해 로샤 검사를 실시하고 반응결과를 한국전 참전 재향 군인 집단과 비교분석하였다. 이를 위해 베트남 참전 군인 중 고엽제 후유의증 환자 20명과 한국전쟁 참전 재향군인 21명을 대상으로 개별적으로 로샤 검사를 실시했다. 각각의 변인들을 Exner 종합체계(2006)의 구조적 요약의 대표적 군집들을 중심으로 비교분석하였다. 즉 핵심영역, 반응결정인, 결정적 특수지표에서의 차이를 비교분석하였다. 그 결과 베트남 참전 집단은 6.25 참전집단에 비해 (1)인지적 경직성 (2) 문제해결에 있어서의 비효율성, (3)정서억압 (4)과잉경계 (5)불안 (6)우울 등의 가능성이 더 높은 것으로 나타내었다. 이러한 결과들은 베트남전쟁 참전 재향군인에서 과거 전쟁 경험에서의 정신적 외상과 관련된 후유증이 지속되고 있을 가능성을 보여주는 것이다. 마지막으로 본 연구의 제한점과 시사점에 대해 논의하였다.

• 사회경제평론
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• 제31권1호
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• pp.63-105
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• 2018

케인스는 그의 "일반이론"을 통해, 자본주의경제는 불완전고용이 일반적이고, 불완전 고용은 자동적으로 회복될 수 없으며, 주기적인 경기순환을 겪는다는 혁명적 주장을 제시했다. 그러나 케인스의 혁명적 주장에 대해, 힉스는 불완전 고용은 불경기에 나타나는 특수한 경우이며, 모딜리아니는 임금경직성이라는 특수한 가정 하에서만 타당하다고 반박했다. 또한 피구와 파틴킨은 임금과 가격이 신축적인 경제에서 실업은 자동적으로 치유된다고 반박했다. 힉스 등의 이러한 도전은 케인스 "일반이론"에서 나타나는 혁명성을 쇠퇴하게 만들었다. 그러나 이들의 주장은 케인스 주장을 올바로 해석한 것도, 또 그것을 효과적으로 반박한 것도 아니다. 이들은 케인스를 협소하게 고전파의 틀 속에서 해석했고, 또 고전파의 주장을 다시 불러내 케인스를 반박했다. 케인스 "일반이론"의 혁명성은 이들의 반박에 의해 그 타당성을 손상받지는 않으며, 오히려 오늘날의 경제현실을 분석하는데 있어서 더욱 더 큰 유용성을 갖는다고 할 수 있을 것이다.

• 한국수자원학회:학술대회논문집
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• 한국수자원학회 2016년도 학술발표회
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• pp.194-194
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• 2016

Gansu, located in the northwestern region, is a typical agricultural province of arid, semiarid in China. The shortage of water resources is the biggest obstacle of Gansu Province's development, and the dry farming water-saving is the eternal theme of Gansu agricultural sustainable development. In recent years, intensify reform in Gansu, has walked out a successful way in the agricultural water-saving. Using the integrated river basin governance as opportunity, the total water-using quantity was regarded as rigidity to retrain, distributed to counties (districts), irrigated areas, towns, associations, groups step by step. Agricultural water price was substantially increased, with the surface water price from about $0.1RMB/m^3$ to more than $0.2 RMB/m^3$, and the ground water from zero to more than $0.1RMB/m^3$. Simultaneously, the difference water prices and over-quota water progression price markup were carried out. The transaction of water rights was encouraged to impel the peasant to establish the consciousness of saving-water. The regulatory documents were formulated to standardize the scope, condition, mode, program etc. of agriculture water-rights transaction, to guarantees the transaction of water rights is carries out in order. The pattern of farming was optimized and adjusted, reducing the high water-consumption crop, increasing economic crops with high benefit and low water-consumption, developing industrialized agricultures such as green house. The relative engineering and measuring facility were comprehensively improved, with the anti-seepage of canal system and the enforcement of dynamo-electric well, developing high-efficient water-saving irrigation and overall metering facilities. The water fine-grained management has realized, and obvious water-saving effect has obtained: water-using rate in the irrigation area by river water has brought up to 0.57 from 0.52, and by well water up to 0.84 from 0.76. Although the water price has increased, the proportion that the water rate expenditure accounted for the cost lasts decline, and the farmers' income has gone up. The peasants express, the used water is few, and it is few to till land, but the income is many, and life is better.