• 한국가구학회지
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• 제26권4호
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• pp.383-391
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• 2015

In recent years the industry has utilized some of the 3D printers in the manufacturing process a trend which spread also a personal desktop 3D printer priced. The 3D printer can create the 3D object by using an ink or a laser instead of the powders, and various liquid plastic material. Properties of 3D printers are liquid, solid, powder and raw materials are also classified as varied. New ideas and processes in the form of designer furniture, becoming increasingly evolved through the development of materials and technologies. Science, art and technology combine to create a new aesthetic for the complex and free binding structure is a combination of design and materials are available in craft and the structure appears not showing. 3D scanning was not simply continue to develop as the production process by a variety of tools and content transformation. Create new mathematical tables and chairs designed by the theory fit the digital age shows a coupling structure with decoration into small pieces. It has created a new craft technique in the digital age.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 International Conference CALS/EC KOREA
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• pp.241-251
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• 2001

B2C e-commerce is now sufficiently stable. Judging from its success, we can expect B2B to similarly improve business processes for a better return on investment. To achieve B2B e-commerce, many consortia have been trying to develop a B2B framework. As a result, the ebXML is started as an international standard for B2B e- commerce based on XML. The exchange of information between two parties requires each party to know the other party's supported business collaborations, the other party's role in the business collaboration, and the technology details about how the other party sends and receive messages. In some cases, it is necessary for the two parties to reach agreement on some of the details. The ebXML CPP and CPA specification defines how to describe these. In this paper, we'll describe our design and implementation of an ebXML CPP and CPA editor which enables each party to create and edit his profiles and which automatically composites two CPPs. Although it is possible to create and edit CPP and CPA documents with general-purpose XML editor, it is not easy to create and edit CPP and CPA documents with a general-purpose XML editor. Moreover, the detailed procedures for CPA formation from CPPs are currently not provided in the specification. Therefore, we propose two approaches for a CPA formation in addition to easy-to-use user interface.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2006년도 춘계학술대회 논문집
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• pp.295-296
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• 2006

We developed wire frame drive unit based on SMA for the 3D Shape display. Our basic concept is wire frame combination connected with a chain form which can create various shapes and it compared with pin array mechanism which is not able to display mushroom shape. It imitates antagonist mechanism of human musculoskeletal system. we create similar motion using repair-relaxation mechanism and locking mechanism by SMA. Therefore, in this paper, we propose SMA control solution for actuating repair-relaxation mechanism and locking mechanism. In our control system. we use optical sensor and quantitative angle between wire frames for closed loop control. And we supply amplified current for SMA by circuit composed of transistor and apply PWM signal to circuit for efficient control. So, wire frame drive unit enable diversity angle control based on sensor data. And then combination of wire frame drive units will create various objects.

• Archives of Plastic Surgery
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• 제40권5호
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• pp.486-491
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• 2013

In performing upper blepharoplasty in the elderly, looking younger and keeping the eyelids harmonious with the rest of the face have to be achieved at the same time. The most important goal in upper blepharoplasty for aging is correcting the drooping upper eyelid skin, and in this process, the surgeon may or may not create a double eyelid fold. The pros and cons have to be fully discussed with the patient, but the author personally prefers creating a double fold unless the patient refuses, because it is efficient in correcting and preventing further drooping of the skin. In most patients, the brow is elevated to compensate for the drooping eyelid, and when the drooping is corrected, brow ptosis may ensue. The surgeon has to prepare for these consequences before performing the procedure, and estimate the exact amount of skin to be excised. In the elderly, the skin and the orbicularis oculi muscle is thin, with a decreased amount of subcutaneous fat and retro-orbicularis oculi fat, and in most cases, excision of the skin alone is enough to correct the deformity. Removing large portions of soft tissue may also prolong the recovery period. Unlike younger patients, the lower skin flap should not be stretched too much in the elderly, as it may create an aggressive looking appearance. A few wrinkles in the lower flap should remain untouched to create a natural look. In this article, the author's own methods of performing an aging blepharoplasty are described specifically, with a step-by-step guide and surgical tips.

• International Journal of Automotive Technology
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• 제3권2호
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• pp.47-52
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• 2002

The integration of CAD/CAM/CAE in product development is the key to realize concurrent engineering. Generally, different systems are employed in product development departments. These different systems create a lot of trout)toes such as difficulty in communication, misunderstanding and so on. A new approach to integrate CAD/CAM/CAE in one system based on CATIA thor the end-to-end process in cylinder head development is presented. Hulti Model Technology (MMT) is used to create consistent and associated CAD models for the end-to-end process in cylinder head development. The concept and method to create and organize multi models are discussed. A typical four-layer structure of HHT for mechanical products is defined. The multi level structure of the cylinder head models based on MMT is provided. The CAD models of cylinder head created based on MMT can be used as the consistent model. All models in the downstream of cylinder head development such as structure analysis, CFD, sand core design , casting simulation and so oil are associated with the CAD models. Practice shows the approach in this paper enables the development process to be carried concurrently and can obviously shorten time to the market, reduce product cost and improve product quality.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권8호
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• pp.3911-3925
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• 2018

This paper proposes a novel steganography method to hide secret data during the generation of tangle patterns. Different from the traditional steganography based on modifying natural images, we propose to construct stego images according to the secret messages. We first create a model to group a selected image contour, and define some basic operations to generate various pattern cells. During data hiding, we create a cell library to establish the relationships between cells and secret data. By painting the cell inside the image contour, we create a dense tangle pattern to carry secret data. With the proposed method, a recipient can extract the secret data correctly. Experimental results show that the proposed method has a flexible embedding capacity. The constructed stego tangle image has good visual effects, and is secure against adversaries. Meanwhile, the stego tangle pattern is also robust to JPEG compression.

• 한국CDE학회논문집
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• 제13권2호
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• pp.77-88
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• 2008

Nowadays personal users create a variety of multi-media contents and share them with others through various devices over the Internet since the concept of user created content (UCC) has been widely accepted as a new paradigm in today's multi-media market, which has broken the boundary of contents providers and consumers. This paradigm shift has also introduced a new business model that makes it possible for them to create their own multi-media contents for commercial purpose. This paper proposes a tangible virtual studio using augmented reality to author multi-media contents easily and intuitively for personal broadcasting and personal content generation. It provides a set of tangible interfaces and devices such as visual markers, cameras, movable and rotatable arms carrying cameras, and miniaturized set. They can offer an easy-to-use interface in an immersive environment and an easy switching mechanism between tangible environment and virtual environment. This paper also discusses how to remove inconsistency between real objects and virtual objects during the AR-enabled visualization with a context-adaptable tracking method. The context-adaptable tracking method not only adjusts the locations of invisible markers by interpolating the locations of existing reference markers, but also removes a jumping effect of movable virtual objects when their references are changed from one marker to another.

• 한국중재학회지:중재연구
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• 제28권2호
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• pp.165-178
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• 2018

Exchanging information with a person without credentials over the Internet does not pose any problems. A decentralized system based on blockchain technology enables the user to exchange new value(currency) with other uncredited users. The blockchain technology creates a new paradigm in which the distribution system can be founded on trust. Various applied distribution systems are being developed based on this paradigm. This study analyzed the problems between an institute's grading system and the central administration system. The limitations of an institute's current central management system were presented through actual cases. To improve the problem, a decentralized system based on block chain technology was presented in order to overcome the fundamental limitations by utilizing blockchain technology, peer-to-peer network, and the distribution system. In the central system, a malicious moderator could create a malicious edit that becomes the cause of a dispute, but in a decentralized system, a problem cannot be created even if there were to be a malicious moderator. However, it is difficult for a single college institute to create a distribution system in order to actualize an effective system. Comparatively, it would be possible to create a decentralized system in which all educational institutes in Korea (elementary schools, middle schools, high schools, colleges) took part in. The application of a decentralized system would improve the public transparency and reliability of educational institutes.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2002년도 추계종합학술대회
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• pp.592-596
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• 2002

DTD는 XML 문서에 표현될 자료의 의미를 정의한 메타 데이터라고 할 수 있다. 따라서 DTD 정보가 손상될 경우 이 정보를 기반으로 한 XML 문서의 보안은 심각한 문제점을 가지게 된다. 본 연구에서는 XML 문서의 송수신 과정에서 XML 문서에만 전자서명을 첨부하는 것이 아니라, DTD 에도 전자 서명을 첨부하는 방법을 제안하였다. 먼저 DTD파일을 끝까지 읽으면서 파싱을 하고 여기서 추출되는 엘리먼트나 속성, 엔티티들을 해시테이블에 저장한다. 파싱이 종료되면 해시 테이블을 읽어 들여서 메시지 다이제스트를 수행한다. 수행 후 이를 개인 키와 합성하여 전자 서명을 생성한다. 전자 서명 시 메시지 다이제스트 과정에서 바꿔 순서에 대해서는 검사하지 못하기 때문에 전혀 다른 다이제스트 값을 생성하는 문제가 발생되는데, 이것은 표준화된 구조와 문서에 대한 트리구조를 구현할 수 있는 DOM을 이용하여 DTD의 전자 서명을 생성하는 방법으로 해결하였다.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제15권2호
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• pp.59-66
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• 2009

The purpose of this study is to define the concept of sustainability, to understand the traditional belief system, to comprehend user-focused healing environment, to understand the current status of Korean Hospitals, to analyze the selected case studies, and to point the way toward enhanced architectural solutions for healing environment in hospitals. The research results indicate that the design of healthcare facilities with healing effects depend on the considerations of 5 senses of patients. In other words, the sustainable design approach to create a healthy healing environment is very important, and architects must be aware of diverse sensory needs of the patients. In addition, the following factors affection healthcare facilities must be considered to create healing environment for users: - "Emphasis on sustainable Design" for harmony among nature, man, and building. - Creation of user Focused Healing Environment reflecting the suers' senses. - Search for New Hospital Forms through various design experiments to create the most suitable healing environment. - "Perception of Paradigm Shift" form a focus on sickness-oriented to wellness-oriented healthcare facility design. - "Awareness of Creating User-Friendly Environment" covering the entire age group form youth to elderly.