• Journal of Broadcast Engineering
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• v.12 no.2
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• pp.112-119
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• 2007

Reversible data embedding theory has marked a new epoch for data hiding and information security. Being reversible, the original data and the embedded data as well should be completely restored. Difference expansion transform is a remarkable breakthrough in reversible data hiding scheme. The difference expansion method achieves high embedding capacity and keeps the distortion low. This paper shows that the difference expansion method with simplified location map, and new expandability and changeability can achieve more embedding capacity while keeping the distortion almost the same as the original expansion method.

• Proceedings of the Korean Institute of Interior Design Conference
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• 2007.05a
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• pp.95-96
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• 2007

Language is the method for communication. Semantician, G. Leech categorized the function of language as informational, expressive, directive, aesthetic and phatic one. Therefore, language can be defined as the social symbol system and the media for communication. Space, also, performs the role of symbol, information and communication. Space can be the media for the communication and the design can be logical construction process by it's arbitrary interpretation. The researcher considered the common points between verbal language and visual language as the tools for the mutual communication, tried to transit them into the 'space' as object language after analyzing 'image of poetry' as meta language, so that the old perspective of space design as function can be renewed as information system of the significant meaning delivery in the context of language's multiplicity, expandibility and changeability.

• Journal of Institute of Control, Robotics and Systems
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• v.15 no.7
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• pp.720-727
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• 2009

This paper proposes a new integrated navigation system for a mobile robot in indoor environments. This system consists of five frameworks which are classified by function. This architecture can make the navigation system scalable and flexible. The robot can recover from exceptional situations, such as environmental changes, failure of entering the narrow path, and path occupation by moving objects, using the exception recovery framework. The environmental change can be dealt with using the probabilistic approach, and the problems with the narrow path and path occupation are solved using the ray casting algorithm and the Bayesian update rule. The proposed navigation system was successfully applied to several robots and operated in various environments. Experimental results showed good performance in that the exception recovery framework significantly increased the success rate of navigation. The system architecture proposed in this paper can reduce the time for developing robot applications through its reusability and changeability.

• The Journal of the Korean dental association
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• v.10 no.2
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• pp.91-96
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• 1972

The tests on the oral capacties which are divided into five groups on centric occlusion position, physiologic rest position, two mm open bite position, four mm open bite position, and maximum opening position of the mandible were conducted on the one hundread normal dental college students and staffs. The aims were to study the changeability of the fundamental oral structure, to get some helpful informations for the full denture wearers and related physiology, and also to find out further experimental standards. The results were as follows; 1. There was also some volumetric space in centric occlusion position. 2. The greater the voluntary opening degree of the mandible was, the greater the oral volumetric capacity was. 3. There were no correlations between the oral capacity and height, weight, and cheek thickness. 4. There were no correlations between the centric occlusion position and physiologic rest position, and voluntary positions of the mandible. 5. The inserted material into the oral cavity was much influential to the physiologic rest position.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2004.11a
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• pp.147-152
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• 2004

With the life style changing and the income level improving in our society, the composition of apartment residents and the preference are diversifying. For that reason, various residential plans are desired. However in bearing wall system the existing apartments have a clear attribute of a fixed system, consequently, they have a difficulty in being adapted to the social requirement. In this research, 1 would like to put a variable apartment to practical use in which with a suitable structure system applied to a variable apartment considered as remodeling system various residential requirements are accepted and the change of the family life cycle and moreover, effective and systematic remodeling are accomplished.

• Journal of Korean Association for Spatial Structures
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• v.18 no.2
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• pp.25-34
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• 2018

This study investigated a bio-tensegrity structural system that combines the characteristics of a general tensegrity structural system with a biological system. The final research objective is to accomplish a changeability for the structural system as like the movement of the natural bio-system. In the study, we present a shape finding procedure for the two stage bio-tensegrity system model inspired by the movement pattern of animal backbone. The proposed system is allowing a dynamic movement by introducing the concept of "saddle" for the variable bio-tensegrity structure. Several shape finding analysis example and results are presented and shows a efficient validation and suitability.

• 한국IT서비스학회:학술대회논문집
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• 2008.11a
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• pp.76-79
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• 2008

소프트웨어는 Invisibility, Complexity, Changeability 라는 태생적 문제점을 가지고 있으며, 특히 소프트웨어의 유지보수 비용의 문제는 소프트웨어 산업에서 중요한 이슈로 부각되고 있다. 유비쿼터스 시대에서 유지보수의 비용을 체계적으로 관리하고, 그 비용을 절감하기 위해서는 유지보수 비용을 절감할 수 있는 환경 지원과 자가성장이 가능한 커뮤니티 컴퓨팅 모델을 개발 및 도입을 위한 정책적 지원 필요성을 제안한다.

• Korean Institute of Interior Design Journal
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• no.27
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• pp.168-175
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• 2001

This study focuses to enhance the general understanding on the new approach and to provide a clue for a new paradigm in man-made physical and residential environment of the 21st Century. Through case analysis, this study aims to examine the characteristics of digital culture itself and of its physical and residential environment and to ultimately forecast the changeability of physical and residential environment prompted by the new digital wave. Without having precedent study about digital culture related to environmental issues, this study aimed to analyze the effect of digital culture in the field of physical environment and residential environment, and to forecast the changability in those fields. On the other hand, this study also atoned to be applicable in construction of a new paradigm in designing physical & residential environment in the near future, so as to contribute to the development of a new environment which will eventually improve the quality of human life.

• Journal of Korean Academy of Nursing Administration
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• v.8 no.3
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• pp.393-402
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• 2002

Purpose : The purpose of this study is to help understanding nursing application of morale after analysing the concept of morale. Method : With a various investigation of the records on the morale, I identified the characteristics of morale. Result : The characteristics of morale are as follows; 1) The active and voluntary motives of performing in a job. 2) The group phenomena as well as individual ones. 3) The characteristics and changeability according to the situation. 4) The self-esteem and satisfaction in a job. Conclusion : As morale can affect the management and success of organization constantly, the analysis of the concept of morale will be available in nursing administration, so the nursing managers should be interested in morale, And nursing managers should enhance the staff's morale in order that the staffs are willing to participate in their work, to be faithful in an organization, to develop creativity and to do better activities and so they have to contribute to the development of the organization and its members.

• Proceeding of Spring/Autumn Annual Conference of KHA
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• 2001.11a
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• pp.15-24
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• 2001

Upon entering the 21st Century, One of the new paradigm of Housing industry in Korea is to accomplish the foundation of Sustainable Building & Environment. It is easy to understand that Building environment in Korea is appearing the phenomenon of rapid conversion from supply-oriented market to demand-oriented market. Thus, the purpose of this paper is to suggest the direction of a new housing development with "Open Housing"as New Housing System which takes into account durability of housing based on the changeability among Housing-Components, the flexibility of interior space, the remodeling & repairing of housing and the user′s needs with variable life-style. This paper also shows the example of Infill-Systems for the Open housing in Korea on the basis of housing situation, experiences for the Open Housing including assembly technique of Infill-Systems.