• 한국수자원학회논문집
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• 제44권1호
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• pp.65-72
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• 2011

자연하천은 사행을 보이며 만곡부 외측에 웅덩이 그리고 만곡과 만곡을 연결하는 직선 유로에 여울이 형성된다. 웅덩이는 수심이 깊으며 유속이 느리고, 여울은 수심이 비교적 얕고 유속이 빠른 특징이 있다. 사행유로를 따라 자연적으로 발달하는 웅덩이-여울 연속구조에 근래들어 관심이 집중되는 이유는 이러한 하천형태학적 구조가 생물학적인 다양성을 증가시키기 때문이다. 본 연구에서는 금강의 지류인 갑천 상류구간을 대상으로 웅덩이-여울 연속구조에서 하상토의 입도특성을 조사하였다. 대상구간인 갑천 상류부는 자갈하천으로 사행에 의한 웅덩이 1개소와 여울 3개소를 포함하고 있으며, 구간 상류측에 보로 인해 상하류에 형성된 웅덩이 2개소가 위치한다. 아울러 조사대상 구간의 습지 및 샛강에서 채취한 하상토의 입도특성도 살펴보았는데, 여울에서의 중앙입경이 웅덩이에서보다 약 4배 큰 것으로 나타났다. 또한, 평수량 및 홍수량에 대하여 부등류 계산을 실시하여, 유사이동에 중요한 웅덩이와 여울에서 평균유속, 전단응력, 무차원 전단응력(Shields 수), 그리고 무차원 전단속도를 검토하였다.

• 한국도로학회논문집
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• 제9권4호
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• pp.227-236
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• 2007

선회다짐기를 이용하여 아스팔트 혼합물의 배합설계를 하는 경우 선회다짐기의 설계 다짐횟수가 필요하다. 본 연구는 이러한 선회다짐기의 설계 다짐횟수를 결정하는데 그 목적이 있다. 선회다짐횟수의 선정을 위하여 세 가지 방법을 이용하였다. 첫 번째 방법은 Marshall 다짐기로 75회 다짐된 혼합물의 밀도와 동일한 밀도를 주는 선회다짐횟수를 선정하는 것이며, 두 번째 방법은 Marshall 다짐기로 75회 다짐된 혼합물의 변형강도와 동일한 변형강도를 주는 선회다짐횟수를 선정하는 것이다. 세 번째 방법은 선회다짐횟수에 따른 공극률을 측정하여 공극률 4%에 해당하는 다짐횟수를 찾아 결정하는 방법이다. 실내 실험을 위해 총 10가지 종류의 아스팔트 혼합물(1가지 골재$\times$10가지 입도$\times$1가지 아스팔트 바인더)이 제작되었다. 세 가지 방법을 종합한 결과, 아스팔트 혼합물의 배합설계를 위한 설계 선회다짐횟수는 100회로 결정되었다. 이러한 결과는 외국에서 사용되고 있는 설계 선회다짐횟수와 유사한 경향을 보이는 결과로, 향후 국내에서 선회다짐기를 이용한 아스팔트 혼합물의 배합설계가 이루어질 경우 적용이 가능할 것으로 판단된다.

• 조형예술학연구
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• 제6권
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• pp.249-266
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• 2004

Nowadays more than 200 countries are living on the earth in international relation. Having their own culture and history, these countries constitute international society, creating their national image with their own identity based on the culture and history. Though each country has cultural goods in which it combines its culture and history to economic area, the global and cultural goods representing a country is not made in short term, but completed by the combination of its long tradition, cultural consciousness of the nation and artistic level. That is to say, the image developed by the country is naturally embodied in the goods and the world recognizes the image and confirms the goods. To embody such Korean and global goods, it is essential to put priority on the research of history and culture of our society. Needless to say, it is very important to find the value of our own differentiated beauty and apply it to each area of design industry. Recognizing the differentiated value of our own cultural originality, this research performs the design of scarf and necktie to exhibit Korean image in modern and fashionable ways for commercialization by developing design of fashion and cultural goods to which Korean image is applied. Through literature and various informations, the theme of design that can best convey Korean image is determined to be the national flag of Korea, Taegeukki and five cardinal colors and the researching method is as follows. First, though the area of developing designs of cultural goods is very wide and various including commerce, industry, products , fashion, handicraft and traditional handicraft, etc., this research sets the scope of developing design, focusing on the fashion accessories utilizing the textile design such as costume, scarf, necktie and so on. Second, the definition and scope of cultural goods and the present situation of domestic cultural goods will be examined. Third, the modelling property and symbolic meaning of the national flag of Korea (Taegeultki) and five cardinal colors, the theme of design will be studied. Fourth, on the basis of above research, scarf and necktie will be designed by modern and fashionable design to which Korean image is applied. Fifth, this is textured in textile printing and gradation for commercialization.

• 디자인학연구
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• 제17권2호
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• pp.55-66
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• 2004

90년대 중반부터 이후(인어공주이후) 장편애니메이션은 미국의 대형 스튜디오를 중심으로 활발하게 제작되어 엔터테인먼트 산업의 한 축으로 자리잡고 있다. 하지만, 일본 애니메이션과 미국 애니메이션의 발전에 비해 우리나라의 애니메이션은 이렇다 할 특징을 보이지 못하고 있는 현실이다. 재정적인 문제와 더불어 아이들의 전유물이라고 생각하는 의식의 전환이 이루어지고 있지 않기 때문이기도 하다. 본 연구는 정보전달의 단계에서 이루어지는 색채정보를 중심으로 하며, 미국 내 대형스튜디오에서 제작되어진 장편애니메이션의 ‘이미지 색채’를 분석하기로 한다. 인간이 느끼는 감성자극 중 대량의 정보를 가장 빠르게 인지하는 시각적 감성요소인 색채를 중심으로 애니메이션의 과거와 현재와 미래를 예측한다. 미국 애니메이션의 색채를 분석해 봄으로서, 정교하고 섬세한 자극에 반응하는 감성적 색채요인을 찾아보고 발달되어진 애니메이션 기술에 표현되어지는 색을 감성산업에 적용한다.

• 한국실내디자인학회논문집
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• 제18권4호
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• pp.3-10
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• 2009

Domestic distribution market is in a time of transition for the present. With consumers' diverse demands, the growth of department stores, shopping malls, specialized shops and so on has been taken place radically and the competition among them also has become severe. In order to promptly and positively cope with the radically changing trend of market and the generation of competing business entities, they are necessary to establish a discriminated indoor space plan. With such desires as the expansion of leisure activities based on the increase of personal income and the up-gradation, diversification and individualization of living standard based on economic growth, the dining-out space, one of people's life environments, need a variety of changes. In the past, the specialized restaurants of composite shopping malls and department stores were a mere mediating space of food sale between producers and consumers, but today they become a discriminated and creative indoor space which representing customers' lifestyle. The purpose of this study was to examine the characteristic of public space of specialized restaurants at composite shopping malls and department stores and then present a discriminated spatial marketing strategy in order to find out the direction of its proceeding in the future. Therefore, the purpose of this study was to work out basic data for the development of dining-out contents at the time of appearing diverse composite dining-out spaces in the future and of establishing a renovation plan of specialized restaurants at composite shopping malls and department stores in order to provide customers a space which could satisfy their desires. In this vein, the characteristic and composition of necessary space was analyzed based on the examination of cases. The investigator hopes that study findings are used as basic data for the study on the interrelationship between the sale space and dining-out space of composite commercial facilities and for the establishment of marketing strategy to attract customers.

• 패션비즈니스
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• 제6권3호
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• pp.28-40
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• 2002

For modern man and woman, footwear is considered a fashion for expressing oneself, and not merely a protective tool for the feet. The purpose of this research is to increase the effect of sales promotional activities by emphasizing product image and by enhancing sales environment. Towards this end, this research focuses on the study of environment at footwear stores that meet the challenges incurred by the changing lifestyles of consumers and the ensuing dynamics of the society in general. Research is based on an in-depth, thorough study of the previous research works and entails examining theoretical background and the concept of Visual Merchandising Display (VMD). Research will focus on the analysis of current situation at footwear stores located in department store based on material research on footwear stores and theoretical examination. Research on the current situation of footwear stores at department store will be conducted from the VMD perspective. In the end, this research paper will make suggestions on the VMD measures for footwear stores with the aim of increasing sales by satisfying consumers' sensibility and purchasing desire. Suggestions will be made based on the results of the research. -Study of current VMD status per fixture centered on 18 brands at department store -Suggestions for VMD at footwear stores based on the survey results of customer purchasing behavior This research intends to develop structured VMD methodology for footwear stores based on the research centered on VMD research of footwear stores at department store. Significance of this research lies in its aim to contribute to the sales increase, no matter how trivial it might be. Going a step further, this research work could be considered one of the foundations for defining the role of VMD methodology at footwear stores. Suggested results are as follows. (1) Need to cast away from simple, one-dimensional type of display method at footwear stores and transform into product image oriented VMD (2) Need to highlight product image by fully leveraging props and by developing footwear display methods that are suitable for different types of fixtures (3) Need to stabilize VMD by developing footwear manual that enables efficient management by store operator.

• Steel and Composite Structures
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• 제48권2호
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• pp.113-130
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• 2023

The present manuscript aims to investigate the deviation between the middle surface (MS) and neutral surface (NS) formulations on the static response of bi-directionally functionally graded (BDFG) porous plate. The higher order shear deformation plate theory with a four variable is exploited to define the displacement field of BDFG plate. The displacement field variables based on both NS and on MS are presented in detail. These relations tend to get and derive a new set of boundary conditions (BCs). The porosity distribution is portrayed by cosine function including three different configurations, center, bottom, and top distributions. The elastic foundation including shear and normal stiffnesses by Winkler-Pasternak model is included. The equilibrium equations based on MS and NS are derived by using Hamilton's principles and expressed by variable coefficient partial differential equations. The numerical differential quadrature method (DQM) is adopted to solve the derived partial differential equations with variable coefficient. Rigidities coefficients and stress resultants for both MS and NS formulations are derived. The mathematical formulation is proved with previous published work. Additional numerical and parametric results are developed to present the influences of modified boundary conditions, NS and MS formulations, gradation parameters, elastic foundations coefficients, porosity type and porosity coefficient on the static response of BDFG porous plate. The following model can be used in design and analysis of BDFG structure used in aerospace, vehicle, dental, bio-structure, civil and nuclear structures.

• Steel and Composite Structures
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• 제49권4호
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• pp.361-380
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• 2023

A size dependent bending behavior of piezoelectrical flexoelectric layered perforated functionally graded (FG) composite nanobeam rested on an elastic foundation is investigated analytically. The composite beam is composed of regularly cutout FG core and two piezoelectric face sheets. The material characteristics is graded through the core thickness by power law function. Regular squared cutout perforation pattern is considered and closed forms of the equivalent stiffness parameters are derived. The modified nonlocal strain gradient elasticity theory is employed to incorporate the microstructure as well as nonlocality effects into governing equations. The Winkler as well as the Pasternak elastic foundation models are employed to simulate the substrate medium. The Hamiltonian approach is adopted to derive the governing equilibrium equation including piezoelectric and flexoelectric effects. Analytical solution methodology is developed to derive closed forms for the size dependent electromechanical as well as mechanical bending profiles. The model is verified by comparing the obtained results with the available corresponding results in the literature. To demonstrate the applicability of the developed procedure, parametric studies are performed to explore influences of gradation index, elastic medium parameters, flexoelectric and piezoelectric parameters, geometrical and peroration parameters, and material parameters on the size dependent bending behavior of piezoelectrically layered PFG nanobeams. Results obtained revealed the significant effects both the flexoelectric and piezoelectric parameters on the bending behavior of the piezoelectric composite nanobeams. These parameters could be controlled to improve the size dependent electromechanical as well as mechanical behaviors. The obtained results and the developed procedure are helpful for design and manufacturing of MEMS and NEMS.

• 한국전통조경학회지
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• 제28권1호
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• pp.102-112
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• 2010

정원의 재식설계(planting design)는 환경과 식물의 생리적인 특징을 파악하고, 그 식물이 가지고 있는 색채, 질감, 형태의 심미적인 호기심에서부터 출발하여 다른 식물들과의 관계를 어떻게 해야 하는지 결정해야 한다. 많은 디자이너들은 전통적으로 색상요소를 중점적으로 구상하는 경향이 있다. 본 연구는 제킬(Gertrude Jekyll)의 먼스태드 우드(Munstead Wood), 비타(Vita Sackvill-West)의 시싱허스트(Sissinghurst), 로이드(Christopher Lloyd)의 그레이트 딕스터(Great Dixter), 존스턴(Lawrence Johnston)의 히드콧 매너(Hidcote Manner)의 4개의 정원을 사례로 한다. 먼스태드 우드의 플라워 보더(flower border)는 끝에 연한 회색과 파란색을 식재하고, 중심으로 갈수록 화려한 빨간색과 오렌지색의 강한 클라이맥스를 만들고 있다. 기존에 등한시했던 흰색과 파란색을 사용하였다. 시싱허스트는 그 이전까지 거의 사용되지 않던 퍼플색(purple color)을 사용하였으며, 딕스터에서는 원래 놓여있던 마젠타색과 동시에 뚜렷한 오렌지색의 혼합으로 기존에 형성되어 있는 색에 대해서 충격을 느끼게 하고, 병치를 통해 원하는 효과를 이룰 수 있게 하였다. 히드콧 매너는 강력한 레드 보더(Red border)를 탄생시켰다. 4명의 작가들은 관찰자의 진행방향에 따라 섞이는 색의 배열, 색의 조절을 통해 정원이 실제보다 크거나 작게 느껴질 수 있는 공간체험을 위해서 색을 사용하였다. 인식 공간에서 주색상과 부차적 색상을 혼합하여 배열할 때, 감상자로 하여금 머릿속에 총체적으로 인식하는 기법을 사용하였다. 재식설계에서 시간은 계절을 유지하여 연출하자는 것으로 주제 색상을 전개할 때, 색상 그라데이션을 사용하거나 색상대비 효과를 유도한다. 또, 재식설계에서 공간은 색상의 구역을 정하는 방식으로 이루어졌다.

• Geomechanics and Engineering
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• 제24권2호
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• pp.115-127
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• 2021

This paper investigates the effects of soaking on a lime stabilized high plasticity clay and evaluates the implications for pavement design. In this context, the soil was stabilized by 4%, 6% and 9% hydrated lime. The soil was pulverized in two different gradations so that representative field gradations could be simulated. Both soil pulverization levels passed the relevant field gradation criteria. Curing durations were chosen as 7 days, 28 days and 56 days. Two groups of samples were prepared and were tested in unconfined compression test apparatus to measure the strength and secant modulus at failure values. One of the groups was tested immediately after curing. The other group of samples were first cured and then subjected to soaking for ten days before testing. Visual observations were made on the samples during the soaking period. The results showed the superiority of fine soil pulverization over coarse soil pulverization for unsoaked conditions in terms of strength and modulus values. Soaking of the samples affected the unconfined compressive strength and modulus values based on lime content, curing duration and soil pulverization level. In soaked samples, fine soil pulverization resulted in higher strength and modulus values compared to coarse soil pulverization. However, even with fine soil pulverization, effects of soaking on modulus values were more significant. A new term named as "Soaking Influence Factor (SIF)" was defined to compare the reduction in strength and modulus due to soaking. The data was compared with the relevant design guidelines and an attempt was made to include Soaking Influence Factors for strength and modulus (SIFS and SIFM) into pavement design processes. Two equations which correlated secant modulus at failure to unconfined compressive strength were proposed based on the samples subjected to soaking. The results of this study showed that in order to decrease the diverse effects of soaking for lime stabilized soils, soil pulverization level should be kept as fine as possible in the field. Importance of proper drainage precautions in the pavements is highlighted for better performance of the pavements.