• Journal of Mechanical Science and Technology
• /
• 제16권2호
• /
• pp.203-210
• /
• 2002

For effective response surface modeling during sequential approximate optimization (SAO), the normalized and the augmented D-optimality criteria are presented. The normalized D-optimality criterion uses the normalized Fisher information matrix by its diagonal terms in order to obtain a balance among the linear-order and higher-order terms. Then, it is augmented to directly include other experimental designs or the pre-sampled designs. This augmentation enables the trust region managed sequential approximate optimization to directly use the pre-sampled designs in the overlapped trust regions in constructing the new response surface models. In order to show the effectiveness of the normalized and the augmented D-optimality criteria, following two comparisons are performed. First, the information surface of the normalized D-optimal design is compared with those of the original D-optimal design. Second, a trust-region managed sequential approximate optimizer having three D-optimal designs is developed and three design problems are solved. These comparisons show that the normalized D-optimal design gives more rotatable designs than the original D-optimal design, and the augmented D-optimal design can reduce the number of analyses by 30% - 40% than the original D-optimal design.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1997년도 한국자동제어학술회의논문집; 한국전력공사 서울연수원; 17-18 Oct. 1997
• /
• pp.807-810
• /
• 1997

Digital control of robot manipulator employs discrete-time robot models. It is important to explore effective discrete-time robot models and to analyze their properties in control system designs. This paper presents a new type discrete-time robot model. The model is derived by using trapezoid rule to approximate the convolution integral term, then eliminating nonlinear force terms from robot dynamical equations. The new model obtained has very simple structure, and owns the properties of independence to the nonlinear force terms. According to evaluation criteria, three aspects of the model properties: model accuracy, model validity range and model simplicity are examined and compared with commonly used discrete-time robot models. The validity of the proposed model and its advantages to control system designs are verified by simulation results.

• 한국디지털건축인테리어학회논문집
• /
• 제8권2호
• /
• pp.93-104
• /
• 2008

Purpose of this paper is to research about new building type of Korean library and suggest the design of Library which based on the building type changes. This research is based on the idea that change of building type could be derived from Architects' designs. So, we analyzed space programs of Gunpo Library competition, redefined the space programs and suggested the direction of building type changes with program changes through design processes. The conclusions of this research are follows; first, we suggested new zoning system in library building design that is consisted of three separate building based on each building's own functions. Second, new zoning and library design would be helpful to making plan about library building competition. The method that we tried at this projec is useful to other complex building designs which have necessities to redefine building type.

• Journal of the Korean Statistical Society
• /
• 제30권1호
• /
• pp.163-178
• /
• 2001

We consider the experimental design problem of selecting values of design variables x for observation of a response y that depends on x and on model parameters $\theta$. The form of the dependence may be quite general, including all linear and nonlinear modeling situations. The goal of the design selection is to efficiently estimate functions of $\theta$. Three new criteria for selecting design points x are presented. The criteria generalized the usual Bayesian optimal design criteria to situations n which the prior distribution for $\theta$ amy be uncertain. We assume that there are several possible prior distributions,. The new criteria are applied to the nonlinear problem of designing to estimate the turning point of a quadratic equation. We give both analytic and computational results illustrating the robustness of the optimal designs based on the new criteria.

• Geomechanics and Engineering
• /
• 제18권2호
• /
• pp.153-159
• /
• 2019

This paper examines the results from three-dimensional dynamic finite element analysis undertaken to develop a new dynamically installed anchor (DIA). Several candidate shapes of new DIAs were selected after an investigation into previous researches of existing DIA designs. The performances of selected DIAs during the installation and loading in non-homogeneous clay were investigated through large deformation finite element (LDFE) analyses. Findings were compared to the current anchors in operation (i.e., Torpedo and Omni-Max DIA) to assess the viability of the new designs in the field. Overall, the anchor embedment depths of the novel DIAs lied under the results of OMNI-Max DIA. And also, the tracked anchor trajectory confirmed that, the novel DIAs dove deeper with stiffer travelling angle, compared to the OMNI-Max DIA. These elements are more critical and beneficial especially in a field where the achieved embedment depths are generally low.

• 디자인학연구
• /
• 제13권4호
• /
• pp.95-103
• /
• 2000

빠르게 변화하는 사회 구조와 생활환경 안에서 다양해진 소비자의 욕구를 충족시키고 제품이 갖는 독특한 캐릭터를 창출하기 위해서, 현대의 디자이너들은 보다 새로운 아이디어를 지속적으로 시도해야만 하게 되었다. 지난 20세기는 기술의 획기적인 진보와 더불어 산업화로 인한 다양한 측면에서 디자인의 성장이 이루어졌고, 시대의 흐름에 따라서 그 의미와 스타일이 각기 다른 양상으로 변화되어 왔다. 과거에 유행했던 디자인과 스타일을 차용하여 현대적 의미와 개념의 디자인으로 재창조하는 레트로(Retro) 디자인이 최근의 디자인 트렌드로 확산 적용되고 각광받고 있다. 이러한 복고적 스타일의 현상은 다양한 분야에서 과거를 회상하게 하는 이미지로 나타나고 있으며 새로운 감각으로 또 다른 가치로 인정받고 있다. 제품디자인 측면에서 가장 대표격인 자동차 디자인은 지난 100여 년 간의 스타일의 변천사에 있어서 시대적 사회·문화적인 변화와 기술의 진보에 의하여, 점차 다른 형태로 나타났으며 다양한 디자인이 끊임없이 시도되어 왔다. 최근의 자동차 스타일의 흐름은 첨단과학기술의 비약적인 성장으로 인해, 그 스타일의 변화가 빠르고 다양한 형태로 나타나고 있는 반면에, 과거의 디자인을 재 도입하는 레트로 스타일이 새로운 트렌드로 관심을 끌고 있다. 자동차디자인에 있어서 복고적 스타일의 의미는 트렌드 이전의 인간의 감성을 자극하고 인간성 회복이라는 또 다른 차원에서, 과거의 문화와 자신과의 연결을 회복하는 의미에서 현대적 감각으로 재창조되어, 향후 미래 디자인 영역을 확장시킬 것으로 보이며 새로운 디자인 트렌드로 발전을 예측할 수 있다.

• 패션비즈니스
• /
• 제8권4호
• /
• pp.68-79
• /
• 2004

This study aims to understand the history of the Victorian age that attached importance to various designs and aesthetic aspects by art and craft movement, and to present that the Victorian pattern is a factor with unlimited possibility in application and development of the modern textile product designs. Therefore, through documents research home and abroad, I considered the periodical background of the Victorian style, a change course of textile, and the theoretical backing of the Victorian pattern, and I studied and analyzed the cases of being applied in the modern textile product designs by classifying apparel, home interior, and fashion accessories. First of all, in apparel, the Victorian pattern transformed into geometrical form had much relative importance, and secondly, in the home interior, the Victorian pattern was expressed realistically or it was represented more boldly and complexly with new materials or techniques introduced. Thirdly, in fashion accessories, decorative nature was shown in intense design with the real description of the Victorian flower pattern and brilliant colors. With these results, it was found out that when the Victorian pattern was applied in the modern textile product designs, it was the factor that could be expected to make a high value added suitable with the modern sense, and it was the pattern with developmental potential with its unlimited use range. Therefore, based on this study, it is considered that the development of textile product designs utilizing the Victorian pattern and academic research, reorganizing the Victorian pattern in accordance with the modern design should be continued.

• 한국의상디자인학회지
• /
• 제12권1호
• /
• pp.25-34
• /
• 2010

Design in the 21st Century requires showing extraordinary and revolutionary possibilities by merging multiple cultures or different art forms. 21C fashion also increases its's complexity through the blending in of other design field's styles and forms. In other words, 21C's fashion design involves not only clothing, but combines techniques, aspects and functions fulled from various design categories. As a result, Current fashion design becomes more unique, and shows various styles. From this point of view, this study focuses on creating and suggesting unique textile designs through the understanding of design processes of textiles, which are inspired by high tech architectural structures. The fundamental shape of the architectural structures were simplified into thick lines and geometric shapes. these design elements were then transferred into textile designs. As a result, unique textile looks were created, and were applied to the apparel designs by CAD to see 3d simulations. Exchanging or merging ideas of different design categories leads innovative and fresh looks. 21C is rapidly changing, and designers need to continually introduce new looks every season. Incorporating 21st Century consumption patterns, designers must understand the process of creating original designs through various methods. The innovative fabric designs for this study involved a creative process of drawing from a step by step breakdown of two separate design fields, which were then merged into one finished design. The data and research from this study can be used as a reference tool for any further applicable fashion and textile designs in the future.

• 한국의류산업학회지
• /
• 제12권5호
• /
• pp.574-581
• /
• 2010

Trunks like men's underpants are similar to boxer shorts and are made in both modern and traditional styles. Like boxer shorts, trunks cover the mid-section of the body (hence the name "trunk"). As the income level of the nation increases, men as well as women become interested in fashion expressing the individual's character, by not regarding fashion as simply wearing essential items to live in. Men's interest in fashion influences men's underwear designs which has been thought previously just as to be worn for living in. Nowadays, trunks are often worn as lounge wear in the household, therefore the need for sensual and characteristic trunks designs is required in the fashion market to meet the customer's new needs. In modern fashion designs, Chinese letters have been artistically presented and used in decorative fashion design regardless of its original meaning, generally embroidered in traditional costumes. Based on the fact that Chinese letters containing lucky meanings have traditionally been used, other Chinese letters meaning positive and prospective future can be adapted and weaved into men's trunks designs. Therefore, in this study, among many good meaning Chinese letters; four Chinese letters, 高(high), 金(gold), 義(justice), 愛(love), have been selected and applied in the trunks designs. The purpose of this study is to develop men's trunk designs using these Chinese letters which can be massively produced and sold in Asian countries which commonly understand the meaning of the Chinese letters as well as in South Korea.

• 한국의상디자인학회지
• /
• 제10권2호
• /
• pp.149-161
• /
• 2008

Since the use of textile has become more extensive and applied for various products, today, the importance of utility, ornament and civilization of textile is emphasized. Textile design should be able to satisfy the designer's creativity and his/her world of art. Moreover, it should be appropriate for the industrial technology circumstances, and taste of consumers. In Korea, traditional culture has been extremely valued, allowing people to be more interested in textile designs derived from traditional cultural. Therefore, designs inspired by the spirit and sense of traditional patterns has been used to develop modern textile designs. Prior research on products, however, show that cultural motive was insufficient, therefore, in this research the purpose is to design textiles and to develop Korean neckties, an essential component of men's attire, by adapting Korean traditional patterns. In order to conduct the research, first, numerous parers on Korean traditional patterns have been studied to select fundamental data about the development of necktie textile designs. Second, Korean traditional patterns were applied while following the target and concept, and two pieces of necktie textile designs have been suggested. Patterns had been designed by hand drawing and CAD system, they have been suggested as a portfolio. As a result, this article suggests new necktie designs utilizing Korean traditional patterns and, attempts to develop particular pattern designs, which have power to accommodate globalization and to express the special qualities of Korea.