• Transactions of the Korean Society of Mechanical Engineers
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• v.13 no.1
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• pp.190-198
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• 1989

Some Developments in computer aided procedures for cold forging process and tool design of rotationally symmetric cup shape parts are described. The developed system enables appropriate forging sequence to be determined automatically, together with details of corresponding preform, die and punch design. The computer program developed is interactive and written in BASIC. This system not only assist the heavy work of designers but greatly shorten the time of design.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2007.11a
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• pp.533-544
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• 2007

사례 기반 계획 시스템은 과거의 유사한 사례 계획들을 이용함으로써 새로운 문제를 위한 계획을 효율적으로 생성할 수 있다. 하지만 대부분의 기존 사�� 기반 계획 시스템들은 사례 검색 및 사례 일반화를 위한 제한적 기능들만을 제공할 뿐만 아니라, 계획 생성과정에 사용자 참여를 허용하지 않는다. 이러한 문제점들을 극복하기 위해, 본 논문에서는 새로운 사례 기반 계획시스템인 JCBP를 제안한다. 본 논문에서는 먼저 JCBP 시스템의 설계와 구현에 대해 설명하고, 실험을 통해 JCBP시스템의 성능을 분석한다. JCBP 시스템은 효율적인 메모리 사용과 사례 검색을 위해 각 도메인의 동일한 작업목표를 가진 사례들을 개별 사례베이스로 그룹화하고, 이들에 대한 색인들을 유지한다. 도 이 시스템은 문제모델로부터 자동으로 추출한 휴리스틱 지식을 사례 검색과 적응 단계에 이용하며, 목표 회귀를 통한 사례 일반화 기능을 제공한다. 또한 JCBP 시스템은 대화형 모드를 통해 혼합 주도 계획 생성 기능을 제공한다. 따라서 사용자의 지식과 선호도를 이용할 수 있어, 계획 생성의 복잡도를 줄이고 사용자의 만족도를 높일 수 있다.

• International conference on construction engineering and project management
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• 2009.05a
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• pp.71-82
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• 2009

This paper describes the use of a highly interactive and inter-operative application for complex simulation environments, or Synthetic Environments (SE), as deployed for construction as Construction Synthetic Environments (CSE). Based on the High Level Architecture (HLA), this research focuses on implementing simulation technology in a software environment, COSYE, that will be the foundation for building CSE applications. This framework is discussed in the context of tunneling and industrial construction applications, including steel fabrication and pipe-spool manufacture. The framework is demonstrated using the NEST sanitary tunnel project in Edmonton, Canada, in which COSYE was used for scenario-based analysis and planning.

• Journal of Korean Institute of Industrial Engineers
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• v.11 no.1
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• pp.21-32
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• 1985

Presented in this paper is a procedure of developing graphical simulation software for planning robot welding processes. Welding is by far the highest application area for industrial robots, and it has been in great need of such a simulator in designing robot work cells, in justifying the economics of robot welding and in planning robotized welding operations. The model of a robot welding cell consists of four components: They are an welding structure which is a collection of plates to be welded, a positioner to hold the welding structure, a robot with a weld torch, and a set of welding lines (in case of arc welding). Welding structure is modeled by using the reference plane concept and is represented as boundary file which is widely used in solid modeling. Robot itself is modeled as a kinematic linkage system. Also included in the model are such technical constraints as weaving patterns and inclination allowances for each weld joint type. An interactive means is provided to input the welding structure and welding lines on a graphics terminal. Upon completion of input, the program displays the welding structure and welding lines and calculates the center of mass which is used in determining positioner configurations. For a given positioner and robot configuration, the welding line segments that can be covered by the robot are identified, enabling to calculate the robot weld ratio and cycle time. The program is written in FORTRAN for a VAX computer with a Tektronix 4114 graphic terminal.

• Journal of the Korean Society for Precision Engineering
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• v.13 no.4
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• pp.43-52
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• 1996

This paper describes interactive computer procedures for design the forming sequences in cold forging. This system is implemented on the personal computer and its environment is a commercial AutoCAD system. The programming language. AutoLISP, was used for the configuration of the system. Since the process of metal forming can be considered as a transformation of geometry, treatment of the geometry of the part is a key in process planning. To recognize the part section geometry, the section entity representation, the section coordinate-redius representation and the section primitive geometru were adopted. This system includes six major modules such as input module, forging design module, forming sequence design module, die design module, FEM verification module and output module which are used independently or in all. The sequence drawing wigh all dimensions, which includes the dimensional tolerances and the proper sequence of operations, can generate under the environment of AutoCAD. The acceptable forming sequences can be verified further, using the FE simulation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.15 no.1
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• pp.74-89
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• 2021

For higher-level requirements of urban planning and management and the recent development of "digital earth" and "digital city", it is urgent to establish protocols for the construction of three-dimensional digital city models. However, some problems still exist in the digital technology of the three-dimensional city model, such as insufficient precision of the three-dimensional model, not optimizing the scene and not considering the constraints of building codes. In view of those points, a method to interactively simulate a virtual city scene based on building codes is proposed in this paper. Firstly, some constraint functions are set up to restrict the models to adhere to the building codes, and an improved directional bounding box technique is utilized to solve the problem that geometric objects may intersect in a virtual city scene. The three-dimensional model invocation strategy is designed to convert two-dimensional layouts to a three-dimensional urban scene. A Leap Motion hardware device is used to interactively place the 3D models in a virtual scene. Finally, the design and construction of the three-dimensional scene are completed by using Unity3D. The experiment shows that this method can simulate urban virtual scenes that strictly adhere to building codes in a virtual scene of the city environment, but also provide information and decision-making functions for urban planning and management.

• The Journal of the Korea Contents Association
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• v.6 no.8
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• pp.114-123
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• 2006

The practical value of the third place using ubiquitous digital technology has been increasing rapidly, therefore it is inevitable to educate students of spatial design in the interdisciplinary education system based on the unified technology of digital in order to cultivate leading designers to adapt new era of spatial design. After a research for the unified form of spatial planning and case studies of foreign educations, this study addresses the issues to classify the interdisciplinary teaching form into three educational categories digital interactive education, digital unified education and digital creative education. Finally, the study proposes the basic form of the ideal and futuristic education of spatial design with the distinguished results after conducting the model curriculum by the above categories.

• Journal of Periodontal and Implant Science
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• v.46 no.3
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• pp.166-175
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• 2016

Purpose: Decision-making by dental and medical experts can be influenced by their biases, interests, and experiences, and academic arguments about controversial issues may additionally be considered indirect experiences capable of affecting decision-making. This study reports on the use of interactive communication devices to evaluate preferences and flexibility in decision-making among dental care providers who attended two distinct academic conferences. Methods: Two debates were presented by a team of two lecturers at two academic conferences (focusing on periodontology and implant dentistry, respectively) and the audience members of each session were surveyed. Before each lecture, two case modules about the diagnosis and treatment of multirooted molar lesions were provided, and interactive communication devices were used to collect responses about decision-making preferences in treatment planning immediately before and after a debate about treatment strategies. Results: In total, 81 and 84 completed answers from both conferences were obtained for the first and second case modules, respectively. The preferred treatment plan differed significantly according to the focus of the conference, and a tendency emerged for the clinicians participating in each conference to express uniform preferences. However, attending the debates resulted in significant changes in decision-making preferences regardless of the conference focus or the characteristics of the participants. Conclusions: Our findings suggest that providing continuing education via debates on controversial issues may be effective in widening conceptual knowledge and reducing biases among experts in the dental and medical fields.

• Journal of KIISE:Computer Systems and Theory
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• v.33 no.1_2
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• pp.119-127
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• 2006

Real-time animation of human figures in virtual environments is an important problem in the context of computer games and virtual environments. Recently, the use of large collections of captured motion data have added increased realism in character animation. However, assuming that the virtual environment is large and complex, the effort of capturing motion data in a physical environment and adapting them to an extended virtual environment is the bottleneck for achieving interactive character animation and control. We present a new technique for allowing our animated characters to navigate through a large virtual environment, which is constructed using a small set of building blocks. The building blocks can be tiled or aligned with a repeating pattern to create a large environment. We annotate each block with a motion patch, which informs what motions are available for animated characters within the block. We demonstrate the versatility and flexibility of our approach through examples in which multiple characters are animated and controlled at interactive rates in large, complex virtual environments.

• Journal of Digital Convergence
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• v.18 no.3
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• pp.71-81
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• 2020

This study the effects of cosmetic product manufacturing and sales companies and manufacturing companies' reputation and product types to the customers on the perceived product quality. For this study purpose, the experiments were conducted targeting 8 groups using 2 × 2 × 2 factor design. Regarding the study results, first, the manufacturing and sales companies and manufacturing companies with higher reputation showed higher perceived product quality than the companies with lower reputation. Second, the reputation of manufacturing and sales companies and manufacturing companies was identified to have interactive effects on perceived product quality. Third, manufacturing and sales companies and product types have interactive effects on perceived product quality. Finally, manufacturing companies and product types have interactive effects on perceived product quality. This study results can provide valuable information for product manufacturing for manufacturing companies and marketing strategy planning for manufacturing and sales companies.