• Journal of Information Processing Systems
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• 제9권2호
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• pp.205-216
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• 2013

In this paper, we analyze a technique for building a high-availability (HA) cluster system. We propose what we have termed the 'Selective Replication Manager (SRM),' which improves the throughput performance and reduces the latency of disk devices by means of a Distributed Replicated Block Device (DRBD), which is integrated in the recent Linux Kernel (version 2.6.33 or higher) and that still provides HA and failover capabilities. The proposed technique can be applied to any disk replication and database system with little customization and with a reasonably low performance overhead. We demonstrate that this approach using SRM increases the disk replication speed and reduces latency by 17% and 7%, respectively, as compared to the existing DRBD solution. This approach represents a good effort to increase HA with a minimum amount of risk and cost in terms of commodity hardware.

• 대한임베디드공학회논문지
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• 제2권3호
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• pp.145-154
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• 2007

Dynamic update of kernel can change kernel functionality and fix bugs in runtime. Dynamic update is important because it leverages availability, reliability and flexibility of kernel. An instruction-granularity update technique has been used for dynamic update. However, it is difficult to apply update technique for a commodity operating system kernel because development and maintenance of update code must be performed with assembly language. To overcome this difficulty, we design the function-granularity dynamic update system which uses high-level language such as C language. The proposed update system makes the development and execution of update convenient by providing the development environment for update code which is same for kernel development. We implement this system for Linux and demonstrate an example of update for do_coredump() function which is reported it has a vulnerable point for security. The update was successfully executed.

• 한국컴퓨터그래픽스학회논문지
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• 제2권2호
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• pp.37-44
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• 1996

네트워크 가상현실 시스템은 먼 거리에 떨어진 사용자들 사이에 일관성 있는 가상 세계를 제공하며, 군사, 오락, 건축 등 여러 부분에 응용되고 있다. 본 논문에서는 그 동안 고성능 그래픽 워크스테이션 환경에서 중심적으로 연구되어 왔던 네트워크 가상현실 시스템을 가장 보편적인 플랫폼인 PC 환경에서 구현할 때 생기는 3차원 그래픽 처리 성능의 문제, 네트워크 대역폭과 전송 지연의 문제 등 여러 문제점들과 이에 대한 해결책들을 제시하고 건축 시뮬레이션을 응용으로 삼아 복수 사용자 가상현실을 구현하였다.

• 한국산업경영시스템학회:학술대회논문집
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• 한국산업경영시스템학회 2002년도 춘계학술대회
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• pp.209-215
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• 2002

In this paper, we propose a freight and fleet optimization model under CVO environment. The model is a kind of multi commodity network flow model based on Vehicle Routing Problem(VRP) and Vehicle Scheduling Problem(VSP), and considering operations and purposes of CVO. The main purpose of CVO is the freight and fleet management to reduce logistics cost and to Improve in vehicle safety. Thus, the objective of this model is to minimize routing cost of all the vehicle and to find the location of commodities which have origin and destination. We also present some computing test results.

• 한국조리학회지
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• 제6권2호
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• pp.315-330
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• 2000

The development of foodservice franchise is inevitable in the developmental process of domestic foodservice industry and it has been led by some big enterprises and foreign brands, but foodservice franchise of a new and differential form will be rapidly developed. The success of franchise can be resulted under the recognition that franchiser and franchise are in the common fate as the partner. Franchisee must make its best efforts to enhance the unity and value of brand jointly with franchiser. Therefore. franchisee has to make efforts to maintain the quality of commodity and service, not to damage the value of title and follow the guidance and effort of franchiser it chose. Franchiser must have the recognition that the success of franchisee is the key of that of franchiser and give franchisee a reliability in order that it follows the order of franchiser. It must have the consciousness that it can achieve the success through the increase of sales by franchisee and support franchisee with trust not to have the easygoing way of thinking to derive its income of commission from increasing the number of franchisees.

• 복식
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• 제54권3호
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• pp.87-97
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• 2004

패션잡지에 실린 패션 및 뷰티 관련 상품의 광고들은 현시대의 미의 이상을 제시하고, 상품소비를 통해 이를 성취할 수 있음을 제안함으로써 신체와 관련한 미적 상징성을 보여준다. 본 연구의 목적은 신체수정을 위한 상품의 특성과 상징적 의미를 확인하는 데 있으며, 이를 위해 여성잡지 Vogue와 남성잡지 GQ 광고 중 화장품과 바디케어 용품 광고를 선정하여, 이를 신체의 특성, 즉 색상, 볼륨과 비율, 형태와 구조, 텍스쳐, 향의 측면에서 구분하여 조사하였다. 그 결과, Vogue와 GQ 모두 다양한 종류의 신체수정을 위한 상품광고를 선보이고 있었으며, 상대적으로 Vogue가 GQ보다 더 많은 양과 종류의 상품 광고를 보이고 있었다. 신체의 특성에 따른 상품의 비중을 보면, Vogue는 신체의 색상과 관련한 시각적인 면이 높게 나타났고. 반면, GQ는 신체의 골격과 형태미, 볼륨과 비율, 그리고 향과 같은 덜 시각적인 면에서의 상품비중이 높았으며, 텍스쳐와 관련한 상품은 비슷한 비율로 나타났다. 이들 상품광고의 텍스트와 이미지에서 보이는 특성은 다기능성. 자연성, 개별성으로 구분할 수 있으며, 세계적 미의 추구, 젊음과 건강 이데올로기, 젠더 무경계화라는 상징적 의미를 내포하고 있다.

• 대한기계학회논문집
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• 제16권1호
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• pp.175-179
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• 1992

본 연구에서는 LPG 기관을 천연가스 이용기관으로 변경하고자 할 때 발생하는 출력 감소를 보안하기 우하여, 공기연료 혼합비 조절, 점화시기조절, 과급효과 방법에 의한 출력향상 효과를 파악하였다.

• Asia pacific journal of information systems
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• 제13권4호
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• pp.1-27
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• 2003

With a swift development of information technology, web sites get more important roles as user's living places. This quantitative and qualitative expansion of web sites requires the need for an evaluation framework of web sites from comprehensive perspectives. This study proposes two dimensions for web site categorization and three dimensions for web site evaluation. These dimensions were developed based on the architectural perspectives that have been used to evaluate buildings in the real world for more than a thousand years. First, in order to categorize various web sites, we extracted two dimensions, user's goals and user's behaviors from behavioral architect which approaches user's behaviors in designing buildings. Second, in order to evaluate four web sites groups, we suggested three dimensions, which are firmness, commodity, delight used in evaluating buildings in the real world. Then for each of the four different web sites groups an empirical survey was conducted to verify these three dimensions of architectural metrics. This ends with study implications and limitations.

• 패션비즈니스
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• 제7권1호
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• pp.160-178
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• 2003

Recently, the field of university PR(public relations) and UI(university identity) come to be emphasized as a remarkable one because the applicants to the universities are consistently reduced in Korea. The purpose of this thesis is to present a souvenir for university PR which is designed in a clothing commodity, easily accessible to visitors, helping students and university officials to keep a pride to our university. We have designed four kinds of clothing, ie T-shirts, polo-shirts, trousers, and hats, after scrutinizing those of other universities. By making change the length of sleeves and slacks, the four kinds were transformed into eight kinds of clothing commodities. The basic trend of this design is on the trompe l'oeil, with the colors being white, grey and black ones, which are of 100% cotton.

• 한국정보과학회:학술대회논문집
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• 한국정보과학회 2002년도 봄 학술발표논문집 Vol.29 No.1 (A)
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• pp.676-678
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• 2002

In this work, we present the novel scheduling algorithm of the multimedia data retrieval for the mobile disk drive. Our algorithm is focused on minimizing the power consumption involved in data retrieval from the local disk drive. The prime commodity in mobile devices is the electricity. Strict restriction on power consumption requirement of the mobile device put unique demand in designing of its hardware and software components. State of the art disk based storage subsystem becomes small enough to be embedded in handhold devices. It delivers abundant storage capacity and portability. However, it is never be trivial to integrate small hard disk or optical disk drive in handhold devices due to its excessive power consumption. Our algorithm ARM in this article generates the optimal schedule of retrieving data blocks from the mobile disk drive while guaranteeing continuous playback of multimedia data.