• 대한치과기공학회지
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• 제29권2호
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• pp.119-128
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• 2007

Although there are many different ways that restorations can be made, it can be said that the biocompatibility of abutment and crown is very important in this experiment. When placed in the actual oral cavity, the differences were obvious. Compared to In-ceram Aluminium, the structure that is obtained after firing reveals a particularly homogeneous distribution of the crystal and glass phase. The In-ceram aluminium system had many problems, such as having weak tensile strength, and having low bonding strength due to the shrinking that occurs after firing. Because of the opaque finish of the metal frame, the two may look similar from the outside, but it is evident that there are differences between using a metal frame and In-ceram. VITA VM9 has been designed as a special ceramic featuring a fine structure or stabilized Zro2 substructures, and so the VITA VM9 excels in its light refraction and reflection behavior, which is similar to natural teeth. It also has outstanding chemical balance, which presents advantages such as considerably reduced accumulation of plaque on the ceramic surface.? This ultimately results in easier care and cleaning for the patient.

• 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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• 제9권5호
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• pp.509-520
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• 2003

본 논문에서는 MPEG-4 비디오 부호화와 복호화 시스템의 실용성과 고효율의 압축을 위한 새로운 알고리즘을 개발하였다. MPEG-4 비디오 그룹에서는 실험과 경험을 통하여 비디오 검증 모델인 VM(Verification Model)을 개발하였다 또한 MPEG-4 표준화 과정을 통하여 ISO/IEC 14496-2 표준 문서와 VM에 기반하여 다양한 참조 소프트웨어가 개발되었다. MS-FDAM은 MPEG-4 참조 소프트웨어로서 표준 부호화와 복호화로 개발되었으나 고효율의 압축과 실용성에 제한이 있다. 이에 본 논문은 기본 MS-FDAM모델에 내용 기반 비디오 코딩의 핵심인 VOP 추출 알고리즘, 실시간 입력 시스템, 압축율을 높일 수 있는 움직임 감지 알고리즘을 추가하여 최대 180:1의 압축율을 보여주는 실시간 고압축 MPEG-4 시스템을 개발하였다.

• 한국의류산업학회지
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• 제10권6호
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• pp.864-872
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• 2008

This study investigated store attributes, VM factors, and store loyalty for store choice behavior by G sensibility types. A total of 425 usable questionnaires were obtained from students who enrolled at universities in Busan, Korea. For data analysis, factor analysis, cluster analysis, ${\chi}^2$-test, and ANOVA were conducted by using SPSS 10.1. The major results were as follows: First, G sensibility was classified into five types: G1(My pace type), G2(Active type), G3(Whimsical type). G4(Mania type), and G5(Sensational type). Particularly, G3 was most highly observed in male and female groups. Second, there was significant difference in the importance of store attribute, such as merchandise assortment among G sensibility types. Third, there were significant differences in VM factors of store image, physical facilities, and display and layout among G sensibility types. Especially, G5 type consumers considered store image, physical facilities, and merchandise display and layout more importantly, than did the other types. Fourth, there was significant difference in store loyalty among G sensibility types. This study discussed managerial implications of visual merchandising strategy for apparel retailers.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제9권8호
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• pp.3203-3215
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• 2015

Due to the high growth of SNS population, service scalability is one of the critical issues to be addressed. The cloud environment provides the flexible computing and storage resources for services deployment, which fits the characteristics of scalable SNS deployment. However, if the SNS related information is not properly placed, it will cause unbalance load and heavy transmission cost on the storage virtual machine (VM) and cloud data center (CDC) network. In this paper, we characterize the SNS into a graph model based on the users' associations and interest correlations. The node weight represents the degree of associations, which can be indexed by the number of friends or data sources, and the link weight denotes the correlation between users/data sources. Then, based on the SNS graph, the two-step algorithm is proposed in this paper to determine the placement of SNS related data among VMs. Two k-means based clustering schemes are proposed to allocate social data in proper VM and physical servers for pre-configured VM and dynamic VM environment, respectively. The experimental example was conducted and to illustrate and compare the performance of the proposed schemes.

• 한국게임학회 논문지
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• 제6권1호
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• pp.21-28
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• 2006

본 논문에서는 OpenGL-ES 기반의 모바일 3D 블루투스 엔진을 설계 및 구현하였다. 기존 모바일 3D 네트워크 게임에서는 Wap(Wireless Application Protocol)과 VM 방식(Network)를 이용한 무선인터넷 게임이 주류를 이루고 있다. 그러나, 이들 모바일 네트워크 게임의 단점으로 지적되는 무선 네트워크 접속에 따른 지나친 통신 요금의 부담으로 인해 VM 형태를 기반으로 하는 다운로드형 게임 즉, 단독 실행형 게임이 인기를 끌고 있다. 본 논문에서는 이러한 모바일 네트워크 게임의 단점을 해결하기 위해 모바일 3D표준(C언어 기반)인 OpenGL-ES로 근거리에 있는 사람들이 무선 인터넷에 접속하지 않고, 모바일 3D 네트워크 게임을 즐길 수 있는 모바일 3D 블루투스 엔진을 제작하였다.

• Macromolecular Research
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• 제11권2호
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• pp.115-121
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• 2003

In this research, the in vitro anti-thrombogenecity of artificial materials was evaluated using hydrophilic/hydrophobic copolymers containing oiligosaccharide as hydrophilic moiety and phospholipid as hydrophobic moiety respectively. N-(p-vinylbenzyl)-[O-$\alpha$-D-glucopyranosyl-(1longrightarrow4)]$_{n-1}$-D-glucoamide(VM7A) was (VM7 A) was adopted as hydrophilic oligosaccharide and 2-acryloxybutyl-2-(triethylammonium)ethyl phosphoric acid (HBA-choline) was adopted as hydrophobic phospholipid. Copolymers having various monomer feeding molar ratios were synthesized through radical polymerization. The synthesized copolymers were identified using FT-IR, $^1$H-NMR, XPS, and DSC. The surface energy of the copolymers were evaluated by dynamic contact angle (DCA) method and checked different roles of VM7A as hydrophilic moiety and HBA-choline as hydrophobic moiety on surface. The surface morphological differences between hydrated and unhydrated surfaces of copolymers were observed and evaluated using Am. The platelets were separated from canine whole blood by centrifugation and adopted to the anti-thromobogenecity test of the copolymers. From the results, we find out that as VM7A ratio increases, so did anti-thrombogenecity. Such results show the possibility of using these copolymers as blood compatible materials in living body.y.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.1466-1469
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• 2011

플러그인 프레임워크는 기존 M&S 프레임워크에서의 문제점인 구성요소 간 높은 종속관계 및 낮은 유연성을 해결하고자 개발된 프레임워크 설계 방식으로, 프레임워크를 구성하는 컴포넌트를 플러그인으로 제공하여 구성요소의 추가 및 변경이 동적으로 이루어질 수 있게 한다. 또한 플러그인 컴포넌트간 통신을 위한 메시지 구조 정의가 실행 시점에 동적으로 결정되어, 컴포넌트 간 상호 독립적인 인터페이스를 보장해준다. 하지만, 플러그인 컴포넌트들의 조합이 이뤄진 상태에서 전체적인 메시지 연결 흐름이 원활하기 위해서는 각 컴포넌트에서 개별적으로 작성된 인터페이스에 대한 검증이 사전에 이뤄줘야 한다. 이에 본 논문에서는 XML 기반으로 작성된 객체 모델 명세서에 대한 무결성과 중복성을 검증할 수 있는 객체 모델 명세서 검증 도구에 대해 제안하고 이에 대한 설계내용을 설명하도록 한다.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• 제49권5호
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• pp.304-307
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• 2023

Venous malformation (VM) is a benign lesion of blood vessels caused by an error in vascular morphogenesis during the embryologic phase. This entity mostly affects the head and neck region, including the lips, tongue, buccal mucosa, gingiva, or palate. VM may cause functional and aesthetic impairments. The anatomical structure and shape of the lips provide an important aesthetic accent for an individual. Therefore, management of VM in the lip area without postoperative defects or scarring is challenging. In this brief communication article, we present a conservative approach to lip VM in a nine-year-old boy using a bleomycin injection that had good aesthetic and functional outcomes. Injection of 2 mL of 1/10 of 15 mg bleomycin in a saline dilution into the lip mucosa may present a drug reaction as a white plaque and reddish owl eye lesion that takes up to three weeks to resolve without a scar. It is important to recognize the characteristics and self-limiting nature of postoperative bleomycin complications to avoid unnecessary treatment.

• 반도체디스플레이기술학회지
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• 제22권4호
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• pp.7-12
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• 2023

The edge ring placed on the outside of the electrostatic chuck (ESC) is a key component for protecting the ESC and controlling the etching uniformity of the edge of the wafer. Therefore, it is very important to understand the etching phenomenon of edge rings for edge ring management and equipment homeostasis. In this study, a specimen with SiO₂ hard mask and underlying Si mold was installed on the edge ring surface and the etching results were measured by varying the edge ring 2MHz RF power. By developing PI-VM model with high prediction accuracy and analyzing the roles of key parameters in the model, we were able to evaluate the effect of plasma and sheath characteristics around the edge ring on edge ring erosion. This analysis method provided information necessary for edge ring maintenance and operation.

• 한국콘텐츠학회논문지
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• 제5권4호
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• pp.212-218
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• 2005

현재 모바일 기술은 빠른 속도로 발달하고 있으며 이러한 상황에 힘입어 휴대폰을 이용한 인터넷 사용이 증가하고 있다. 휴대폰 사용자의 인터넷 사용은 대부분 아바타 및 게임 컨텐츠가 그 주를 이루고 있다. 본 논문에서는 SK-VM을 기반으로 기존의 단순한 아바타 서비스가 아닌 이메일과 애니메이션 아바타를 접목시킨 클라이언트/서버 시스템을 설계, 구현했다. 서버는 아바타 및 사용자 정보 관리를 위한 DB 모듈과 메일 관리 모듈로 구현했고, 클라이언트는 아바타 이미지를 애니메이션으로 재구성하여 메일 내용과 함께 보여주도록 구현했다. 이 모델은 휴대폰의 제한적 하드웨어 성능에 맞춰 클라이언트의 부하를 줄이도록 설계했다. 모바일 기술이 빠르게 발전하고 있지만 휴대폰의 제한된 성능 때문에 본 논문에서 제시한 모델이 앞으로 많이 사용될 것으로 기대된다.