• 디자인학연구
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• 제13권3호
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• pp.39-48
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• 2000

본 연구는 제품 디자인 프로세스중 아이디어나 디자인의 가능성에 대하여 탐색하는 부분을 중심으로 디자인 목표가 명확하게 정해지지 않은 상황하에서 1. 시각적으로 형태발상 지원시스템을 구축하여 디자이너에게 형태발상 능력의 한계를 극복할 수 있도록 지원하고, 2. 또한 사용자 참여적 형태발상 시스템으로서 웹 상에서 사용자들의 요구에 실시간으로 다이나믹하게 이미지를 생성해주고 사용자들의 선호도를 분석하여 선호도가 높은 이미지에 대한 정보를 디자이너에게 제공하는 즉 디자이너가 사용자들의 의견을 수렴할 수 있도록 하고, 3. 선호도가 낮은 이미지들은 누락시키고 지속적으로 새로운 이미지 조합을 업데이트하여 사용자의 형태 및 칼라에 대한 선호추세를 파악하여 미래에 선호될 수 있는 칼라와 이미지를 생성할 수 있도록 하였다. 이는 제품 디자인 개발 프로세스 중 아이디어발상 또는 형태 발상 지원에 대한 한 방식으로 그 효과가 있으리라 기대된다.

• 한국콘텐츠학회논문지
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• 제11권7호
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• pp.489-496
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• 2011

문화상품 및 체험기기 디자인에 있어 최종 사용자의 체험 감성 및 형상에 대한 감성은 중요한 비중을 차지한다. 하지만 지금까지 문화상품과 체험기기들은 일반적으로 전통적인 제작 방법을 사용하여 옛것을 그대로 재현하거나 디자이너, 제작자의 직관과 추정에 의존해 왔다. 본 사례 연구에서는 감성공학적 평가, 분석 기법과 디지털 방식의 현대 운송기기 디자인 프로세스를 문화 체험기기 디자인 개발에 적용하였다. 디자인 프로세스 각 세부 단계에서 인터넷을 활용한 전체형상 위주의 신속한 감성평가, 분석을 수행하고 이를 디자인 안들에 대한 품평에 활용함으로써, 사용자의 감성이 디자인 개발 각 단계에 반영될 수 있도록 하였다. 본 논문에서는 슬로시티(Cittaslow)로 지정된 신안 증도에서 사용될 관광용 마차에 대한 감성 디자인 프로세스 적용사례를 예시한다.

• 대한수학회보
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• 제35권4호
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• pp.757-767
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• 1998

For a Riemannian manifold $(M^n, g)$ we consider the space $V(M^n, g)$ of all smooth functions on $M^n$ whose Hessian is proportional to the metric tensor $g$. It is well-known that if $M^n$ is a space form then $V(M^n)$ is of dimension n+2. In this paper, conversely, we prove that if $V(M^n)$ is of dimension $\ge{n+1}$, then $M^n$ is a Riemannian space form.

• Journal of the Korean Statistical Society
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• 제27권4호
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• pp.385-396
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• 1998

A computing method of fractional Bayes factor (FBF) for a point null hypothesis is explained. We propose alternative form of FBF that is the product of density ratio and a quantity using the generalized Savage-Dickey density ratio method. When it is difficult to compute the alternative form of FBF analytically, each term of the proposed form can be estimated by MCMC method. Finally, two examples are given.

• 대한수학회논문집
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• 제10권2호
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• pp.357-363
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• 1995

We study non-existence of $L^2$-harmonic p-forms on a complete, non-compact Riemannian manifold without boundary as extension of results of K. Yano in the case of compact.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2004년도 춘계공동학술대회 논문집
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• pp.245-248
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• 2004

It is certain that the future manufacturing environment will be network-centric and spatially distributed based on Internet. Today, wide variety of distributed computing and communication technologies are available for implementing a system for product data exchange and sharing. One of the technologies that have been received most attentions for product data exchange and sharing is Product Data Management (PDM). PDM tries to integrate and manage process of data and technical documents that are connected to physical product components. In accordance to previous researches about PDM, it can be regarded as an integration tool of many different areas, which ensures that the right information is available to the right person at the right time and in the right form throughout the enterprise. PDM with Web-enabled CAD system is proposed in this paper in order to acknowledge the usefulness of the system mentioned. The system will use Web service on Visual Studio C#.Net to invoke the web application system.

• 한국신뢰성학회지:신뢰성응용연구
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• 제1권2호
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• pp.109-120
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• 2001

This study reviewed the national standards for risk management to judge whether they are suitable for a product safety management program. Among the standards issued from Australia, New Zealand, Canada, Japan, and UK, the risk management guideline (AS/NZS 4360: 2000) issued jointly from both Australia and New Zealand have better features for product safety management program than any other risk management standards in view point of broad definition of risk concept including opportunities of loss and gain, stepwise composition of management processes applicable iteratively, and integrable form of structure addible to existing management practice. Comparing the three product safety management programs suggested by several authors yielded common features of product safety management program model: (1) organization for product safety, (2) risk identification, (3) risk evaluation, (4) risk treatment, (5) monitoring/communication, and (6) documentation. All of these activities can be performed within risk management framework proposed by AS/NZS 4360.

• 대한수학회논문집
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• 제36권4호
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• pp.783-800
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• 2021

We prove the non-existence of warped product GCR-lightlike submanifolds of the type K_⊥ × _λ K_T such that K_T is a holomorphic submanifold and K_⊥ is a totally real submanifold in an indefinite Kaehler manifold $\tilde{K}$. Further, the existence of GCR-lightlike warped product submanifolds of the type K_T × _λ K_⊥ is obtained by establishing a characterization theorem in terms of the shape operator and the warping function in an indefinite Kaehler manifold. Consequently, we find some necessary and sufficient conditions for an isometrically immersed GCR-lightlike submanifold in an indefinite Kaehler manifold to be a GCR-lightlike warped product, in terms of the canonical structures f and ω. Moreover, we also derive a geometric estimate for the second fundamental form of GCR-lightlike warped product submanifolds, in terms of the Hessian of the warping function λ.

• 한국의상디자인학회지
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• 제14권3호
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• pp.161-176
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• 2012

This study aims to find out the influence of satisfaction of the product and shopping mall attributes on mall reliability, repurchase intention, and recommendation intention in internet open market. For this purpose, this study surveyed 266 male and female consumers in their 20's~40's for empirical analysis who have ever purchased clothing through internet open markets. Respondents are selected using the convenience sampling through online survey in August 2011. For statistical analysis, descriptive statistics, reliability analysis, factor analysis, t-test, ANOVA, and regression analysis are carried out using SPSS for Windows 12.0. The results are as follows; First, it was identified that there were Significant differences in consumers' satisfaction on product and shopping mall attributes according to purchase price, degree of purchase, and the demographics. Second, it was identified that performance, sewing condition, the stability of the form, texture, harmony with other clothes, the response of people, fashionability, seller, origin, detailed explanation on products, interaction with shopping malls, and ease-of-use have significant influence on the reliability of open market. Third, it was identified that easiness to be active in, the stability of the food, design, suitability to T.P.O, price, origin, detailed explanation on products, product assortment, reputation of shopping malls, ease-of-use, and delivery charge policy have significant influence on the repurchase intention. Fourth, it was identified that easiness to be active in, the stability of the form, design, suitability to T.P.O, price, origin, detailed explanation on products, product assortment, reputation of shopping malls, ease-of-use, and delivery charge policy have significant influence on the intention to recommend.

• 대한산업공학회지
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• 제39권3호
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• pp.172-182
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• 2013

In this study we consider a flow line CONWIP system in which two types of product are produced. The processing times of each product type at each station follow an independent exponential distribution and the demands for the finished products of each type arrive according to a Poisson process. The demands that are not satisfied instantaneously are either backordered or lost according to the number of unsatisfied demands that exist at their arrival instants. For this system we develop an approximation method to obtain the performance measures such as steady state probabilities of the number of parts of each product type at each station, mean waiting times of backordered demands and the proportion of backordered demands. For the analysis of the proposed CONWIP system, we model the CONWIP system as a two class closed queueing network with a synchronization station and analyze the closed queueing network using a product-form approximation method for multiple classes developed by Baynat and Dallery. In the approximation method, each subsystem is analyzed using a matrix geometric method. Comparisons with simulation show that the approximation method provides fairly good results for all performance measures.