• 한국정밀공학회지
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• 제20권8호
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• pp.115-125
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• 2003

To analyze the applications of all types of mechanical systems, general purpose analysis programs have been developed and commercialized. However, it is customary to develop and use customized programs even though they sometimes require more work than a general purpose program. A customized program is simplified to adapt to a particular application from the beginning, is designed for small computers, and developed with hardware-in-the-loop in mind so it can be applied effectively. By adding design knowledge and bundling know-how to an analysis program, analysis time can be reduced. And because an analysis has to work in conjunction with other analysis programs, a proprietary program that the user can easily modify can be useful. In this thesis, a multi-body dynamics analysis system is presented using one of the most useful programming techniques, object-oriented concept. The object-oriented concept defines a problem from the physical world as an abstract object, an abstract model. The object becomes encapsulated with the data and method. Simulation is performed using the object's interface. It is then possible for the user and the developer to modify and upgrade the program without having particular knowledge of the analysis program. The method presented in this thesis has the following advantages. Since the mechanical components of the multi-body system converts independent modeling into a class, the modification, exchange, distribution, and reuse of elements are increased. It becomes easier to employ a new analysis method and interface with other S/W and H/W systems. To employ a new analysis method, there is no need to modify elements of the main solver and the Library. In addition, information can be communicated to each object through messaging. It makes the modeling of new elements easier using inheritance. When developing a S/W for the computer simulation of physical system, it is reasonable to use object-oriented modeling. Also, for multi-body dynamics analysis, it is possible to develop a solver that is user-oriented.

• 한국감성과학회:학술대회논문집
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• 한국감성과학회 2002년도 춘계학술대회 논문집
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• pp.274-277
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• 2002

To transmit users' intentions that vary with each person, intuitive and hi-directional interactions between users and a computer are necessary. We considered these interactions by dividing them into two spaces, physical space and informational space. Informational space supports human thinking process by arranging and visualizing much information. Physical space reproduces the real world where various restrictions exist to virtual space. From the viewpoint of three aspects - contents model, kansei model and context model - we defined the style of the interaction between user and multimedia database. In this paper, for the purpose of examining the way to realize the interaction based on these models, we developed interior design coordination support system and garden coordination system, and then evaluated them.

• 경영정보학연구
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• 제3권2호
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• pp.277-288
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• 2001

Of critical importance to the success of any e-commerce site are the two factors: rapid application development and quick response time. A three-tier architecture composed of presentation layer, business layer, and data access layer emerges to allow rapid changes in user interface, business logic, and database structures. Too often, such a logical three-tier architecture is considered as requiring a three-tier physical architecture: Web server, application server, and database server running on separate computers. Contrary to the common belief, a Web stress test reveals that the three-tier logical architecture implemented on a two-tier physical platform guarantees a quicker response time due to the reduction in cross-machine communications. This would lead business firms to economize their spending on e-commerce: increasing the number of physical servers to expedite transaction is not necessarily the best solution. Before selecting a particular hardware configuration, a Web stress test needs to be conducted to compare the relative merits of alternative physical architectures. Together with capacity planning, Web stress test emerges as a powerful tool to build robust, yet economical e-commerce sites.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제3권1호
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• pp.108-118
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• 2009

In this paper we develop an indoor location tracking system and its 3D tracking monitoring viewer, viz., 3D Navigation Viewer (3DNV). We focus on the integration of an indoor location tracking system with the Virtual Reality Modeling Language (VRML), to facilitate a representation of the user's spatial information in virtual indoor environments that is synchronized with the physical location environment. The developed indoor location tracking system employs beacons as active transmitters, and a listener as a passive receiver. The distance information calculated from the difference speeds of RF and Ultrasonic signals is exploited, to determine the user's physical location. This is essential in supporting third parties like doctors and caregivers in identifying the activities and status of a particular individual via 3DNV. 3DNV serves as a unified user interface for an indoor location tracking system, showing the viewpoint and position of the target in virtual indoor environments. It was implemented using VRML, to provide an actual real time visualization of the target's spatial information.

• 산업융합연구
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• 제19권1호
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• pp.71-77
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• 2021

스크린골프는 단순히 실내에서 골프를 즐기는 수준을 넘어 실제 골프코스와 같은 환경을 체감할 수 있도록 정교한 센서와 3D 그래픽으로 구현하여 사용자에게 보다 현장감 있는 인터페이스를 제공한다. 이러한 인터페이스 환경을 경험한 사용자들은 골프에 대한 재미를 더 크게 느끼고 몰입하게 되는 행동성향을 보임에 따라 효과적인 실감 인터페이스의 제공은 무엇보다 중요하다 하겠다. 본 연구에서는 체감형 스포츠로서 스크린골프가 가지는 의미와 스크린골프에 구현된 다양한 인터페이스 요소를 정리하여 사용자가 필드골프와 같은 실재감과 재미를 느끼며, 스크린골프에 보다 몰입할 수 있는 요인들을 규명하였다. 감각 요소를 근거로 한 인터페이스 요소들을 시각·청각·촉각 측면에서 정리하였고, 골프존과 카카노VX 사례를 대상으로 주기적으로 스크린골프를 즐기는 사용자 FGI와 골프 프로 전문가 심층 인터뷰 등을 통해 스크린골프의 효과적인 실감 인터페이스 제공을 위한 개선 방안 및 방향성을 제시하였다. 분석결과 시각 측면에서는 야디지를 포함한 코스정보와 플레이 연출 그래픽이 몰입하게 만드는 요소임을 확인하였고, 촉각 측면에서는 실제 장비를 사용한다는 점과 함께 다양한 코스 환경과 플레이 상황을 구현한 물리적 인터페이스 실재감이 중요하게 나타났다. 특히 청각 측면에서는 보다 진보된 기술로 정교하게 구현한 필드골프 캐디와 같은 AI 캐디를 통해 사용자별 맞춤형 서비스를 제공한다면 보다 큰 재미와 실재감으로 스크린골프에 몰입하게 만드는 가장 효과적인 방안임을 확인하였다.

• 한국컴퓨터정보학회논문지
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• 제24권1호
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• pp.115-120
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• 2019

In this paper, we propose a system and an intuitive interface that can create an athletic scene among athletes. We allow you to enter motion as if you were playing a game, so that the user's action becomes the player's action. The user can take various actions in front of the motion sensor and control the object flying to him. When a user specifies an opponent to pass or attack, and takes appropriate action in front of the motion sensor, the movement trajectory of the object is automatically generated by the physical optimization technique in accordance with the motion. In this way, you can create scenes where multiple players play together in a virtual environment. The method of this paper will be very useful for rapid prototyping for cinematic trailers of based on athletics games or animations.

• 대한인간공학회지
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• 제26권4호
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• pp.113-120
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• 2007

Kimchi refrigerator is a specific refrigerator for Kimchi, Korean traditional fermented food. It has been fast popularized since it was developed about ten years ago. In this study, a survey was conducted with 103 female voluntary respondents to understand the customer satisfaction of the Kimchi refrigerator in the aspect of physical use. The respondents showed a high satisfaction for the use of refrigerators. It was, however, shown that they felt highly uncomfortable in using the refrigerator. In particular, the high discomfort was related to the fact that the customer should bend her torso very much to put Kimchi containers into the refrigerator, take them out of it, or clean its inside. Seventy-five percent of the respondents reported the experience of body-part pains and 58.4% of them reported pain experience in the back. It is presumed that these results are highly correlated to the top-cover design of the refrigerator, which is the most popular type to improve its performance of maintaining proper temperature. Therefore, the developers should consider these usability problems related to the refrigerator and try to enhance its usability by adopting ergonomics in the design stage.

• 디자인학연구
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• 제19권3호
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• pp.195-206
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• 2006

Design for improved usability is to understand products from the user's point of view so eventually to enhance the pleasantness users by reflecting it into the design. The philosophy of user-oriented design is an essence of human-centered product planning, and its application is more important for railway vehicle design, which is closely connected with everyday life. This study focused to define basic elements of train interior design concept, which considers convenience and comfort for passengers, by extracting and interpreting ergonomic requirements, as usability factors, of train toilet design. The study on user-oriented design of trains consists of the practice of sensibility engineering for the management of customers' emotions and its harmonious use on design, and aims on the embodiment of new ergonomic design. In the center, it has analyzed the criteria and characteristics of the user-oriented design and has concluded the design direction and components to a concrete idea and proposed prototypes, which may become a good example for train interior design later on. In addition, it proposes a direction, which may become a guideline of ergonomic design, to secure competition capacity. Moreover this study is concentrated on the physical environment and human behavior of train toilet users, on the analysis of factors necessary for adequate toilet design, and on the understanding of interface between its users. What is more, it proposes a module of development process and methods of approaching the interface. The study presents a design standard, under which the concrete data of the characteristics and practicable range and the convergent demands accelerate to the module could be confirmed and criticized. The study on the usability is going to contribute to more pleasant and comfortable train environments and consequently, it's going to create new values of increased railway competitiveness by design.

• 디지털콘텐츠학회 논문지
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• 제18권1호
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• pp.1-7
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• 2017

요즘은 다향한 IT 기술의 융합을 통해 구현되는 가상현실 기술은 사용자의 체험영역을 확대하고 물리적인 에너지와 각종 비용을 절감하는 기술로 주목을 받고 있다. 본 연구에서는 가상현실 기술을 활용한 가상훈련시스템의 몰입감과 상호작용 제공을 통한 학습효과가 높은 분야를 대상으로 연구하고자 한다. 가상현실 시스템의 국내외 현황에 대해 알아보고 국내 가상훈련 시스템의 수요를 분석하여 나아가야 할 발전 방향에 대해서 연구하고자 한다. 가상현실 기기들의 사용현황에 대해서 가상훈련수요를 고려한 사업의 로드맵을 구축하고자 한다.

• 전자공학회논문지SC
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• 제44권4호통권316호
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• pp.8-14
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• 2007

사회제도가 개선되고 기술이 발전함에 따라 고령인구와 장애인의 사회 참여가 지속적으로 증가하고 있다. 지능 로봇 및 지능형 주거공간 등의 여러 시스템들의 이들의 사회 참여를 돕기 위해 개발되었고, 실제 고령 인구와 장애인의 독립적인 생활 영위에 많은 기여를 하고 있다. 그러나 상기의 시스템들을 구축하기 위해서는 대부분 고가의 특별한 하드웨어가 요구된다. 실제 시스템을 사용하게 될 계층의 경제적 어려움을 고려하면 기존의 노트북 컴퓨터와 같은 일반적 하드웨어를 사용하는 소프트웨어 기반의 시스템의 개발이 요구된다. 한편 이러한 소프트웨어는 컴퓨터 사용에 익숙하지 않으며 신체의 움직임이 부자유스러운 사용자 계층을 위해 특수하게 제작되어야 한다. 본 논문에서는 이러한 요건들을 만족시키는 소프트웨어 기반의 보조 시스템의 관련 이론을 포함한 개발 과정을 소개하고 결과물을 제시한다.