• 대한인간공학회지
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• 제30권2호
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• pp.331-338
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• 2011

Objective: The present study developed a comprehensive usability testing and analysis framework based on a physical interface model of product and user and applied the proposed framework to usability testing of canister-type vacuum cleaner. Background: The development of a user-centered product design is important to satisfy customers who want to use the product with ease of use and to keep the manufacturer competitive in the market. Method: The proposed testing and analysis framework consists of (1) characterization of physical product-user interface, (2) preparation and administration of usability testing questionnaire, and (3) analysis and interpretation of usability testing results. A usability evaluation of five vacuum cleaners was planned and administered based on the proposed framework and its analysis produced detailed and overall usability testing results for various aspects such as tasks, usability criteria, and design components. Results: The testing results were further utilized to identify usability problems and preferred design features of the vacuum cleaners. Conclusion: The proposed usability testing and analysis framework was found effective to identify preferred features and problems of a product design in a systematic, holistic manner. Application: The proposed framework can be of effective use for practitioners of product design and development to obtain comprehensive, quantitative usability testing information in a systematic manner.

• 디자인학연구
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• 제13권3호
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• pp.81-90
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• 2000

교육분야에서 웹의 활용성에 대한 인식이 크게 증대되고 있는 반면 제대로 된 인터페이스 설계가이드가 없어 개발과정에 많은 어려움이 있다. 가이드라인이 있다 하더라도 일률적이고, 단편적이어서 디자인 개발에 실질적인 도움이 되지 못하는 문제점을 않고 있는 것이 현실이다. 본 연구는 심리적 언어도출을 통한 웹사이트 평가 방법을 개발하여 이것이 설계과정에 가이드라인이 될 수 있는가를 연구하고자 하였다. 먼저 심리적 언어를 도출하여 이를 설계 원리들과의 연관성을 알아 본 후 이렇게 만들어진 분류 체계를 기반으로 평가의 모델을 구축하였다. 그 결과 심리적 언어체계를 바탕으로 한 평가 모델이 실질적인 인터페이스디자인 문제해결에 도움을 준다는 사실을 알 수 있었다. 기존의 웹 개발자를 위한 인터페이스 가이드라인은 소프트웨어 개발에 사용되어지는 용어들로 인해 디자이너가 실질적으로 활용하기에 많은 어려움이 따랐지만, 디자이너의 역할이 크게 증대되고 있는 지금 심리적 언어체계의 가이드라인은 이해하기 쉽고, 사전에 문제점을 미리 파악 할 수 있어 졸은 자료로 활용 될 수 있을 것으로 기대한다.

• 한국도서관정보학회지
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• 제34권3호
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• pp.111-124
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• 2003

노인의 인구가 늘어남으로써, 공공도서관도 이들의 서비스에 관심을 가져야 한다. 특히, 컴퓨터와 인터넷 사용이 미숙한 노인에게 공공도서관은 교육기관으로 또는 봉사기관으로 중요한 역할을 할 수 있다. 이 연구는 공공도서관의 노인용 인터페이스를 개발하는데 필요한 여러 가지 디자인 요소와 상세한 내용을 조사하여 분석하였다. 본 연구의 결과는 노인용 인터페이스를 개발하려는 공공도서관에 도움을 줄 것이다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집A
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• pp.831-836
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• 2001

In the case of axisymmetric thermal analysis of drum brakes, the distribution of frictional heat produced on the interface and temperature difference between mating frictional faces are very interesting problems to computational researchers. In this paper, heat conduction from the interface to the pad and the drum was modeled by using a thin interface element, so artificial division of the generated frictional heat between pad and drum is not necessary. Temperature difference between mating frictional faces is successfully modeled by using the interface element. The influence of some parameters on tile thermal stress was checked. The analysis was performed by ABAQUS/Standard code.

• 한국산업융합학회 논문집
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• 제2권2호
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• pp.41-49
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• 1999

In general, FORTRAN is used for numerical analysis and OPS5 or LISP is used for expert systems, This causes problems at the interface because the various applications require different computing languages or environments. This paper describes the approach used to take AutoCAD as a user-interface for an existing finite element structural analysis package. Some principles concerning database management related to data-exchange interface of pre- and post-processing system for FORTRAN structural analysis program are discussed, and numerical examples demonstrate the power of the combination of these programs.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제21권3호
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• pp.109-124
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• 2017

The numerical solution of the Stokes equation with discontinuous viscosity and singular force term is challenging, due to the discontinuity of pressure, non-smoothness of velocity, and coupled discontinuities along interface.In this paper, we give an efficient algorithm to solve this problem by employing spectral Legendre and Chebyshev approximations.First, we present the algorithm for a problem defined in rectangular domain with straight line interface. Then it is generalized to a domain with smooth curve boundary and interface by employing spectral element method. Numerical experiments demonstrate the accuracy and efficiency of our algorithm and its spectral convergence.

• Journal of applied mathematics & informatics
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• 제9권1호
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• pp.101-124
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• 2002

The convergence rate of a numerical procedure barred on Schwarz Alternating Method (SAM) for solving elliptic boundary value problems (BVP's) depends on the selection of the interface conditions applied on the interior boundaries of the overlapping subdomains. It hee been observed that the Robin condition(mixed interface condition), controlled by a parameter, can optimize SAM's convergence rate. Since the convergence rate is very sensitive to the parameter, Tang[17] suggested another interface condition called over-determined interface condition. Based on the over-determined interface condition, we formulate the two-layer multi-parameterized SAM. For the SAM and the one-dimensional elliptic model BVP's, we determine analytically the optimal values of the parameters. For the two-dimensional elliptic BVP's , we also formulate the two-layer multi-parameterized SAM and suggest a choice of multi-parameter to produce good convergence rate .

• 한국자동차공학회논문집
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• 제9권3호
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• pp.173-180
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• 2001

In the case of axisymmetric thermal analysis of drum brakes, the distribution of frictional heat produced on the interface and temperature difference between mating frictional faces are very interesting problems to computational researchers. In the first part, the influence of the s-cam load angles and elastic modulus of the pad on the contact pressure distribution between pad and drum was checked by a three dimensional model. In the second part heat conduction from the interface to the pad and the drum was modeled by using a thin interface element, so artificial division of the generated frictional heat between pad and drum is not necessary. Temperature difference between mating frictional faces is successfully modeled by using the interface element. The influence of some parameters on the thermal distribution is checked. The analysis was performed by ABAQUS/Standard code.

• 대한전기학회논문지:전력기술부문A
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• 제52권4호
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• pp.207-212
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• 2003

System analysis programs have been developed by several different research groups. Especially, the programming languages and the developing environments of algorithm modules and user interface modules are different. And therefore, the differences have degraded interoperability and reusability of the system analysis modules. in order to solve this problems, a general binary interface has designed and the component based on the interface has developed as well. However, sometimes each interface is uncompatible because those are designed on the particular vendor. In this paper, we deals with XML web service, Sort of distributed processing architecture, which is not restricted by not only the existing internet standard but also any Programming language or any vendor. Because of its platform independent, each module can be updated and extended independently.

• 설비공학논문집
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• 제18권5호
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• pp.451-457
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• 2006

Conjugate heat transfer (CHT) is the simultaneous, coupled heat transfer within a fluid and an adjoining solid, and the interface treatment plays an important role in its analysis, particularly when using unstructured grid system. In the present paper a new solid-fluid interface treatment in CHT analysis is presented and applied to two typical CHT problems, i.e. natural convections in both concentric thick-walled cylinders and cavity with a centered solid body. The present interface treatment for unstructured mesh clearly demonstrates the same accuracy and robustness as that for typical structured mesh.