• 한국지능시스템학회논문지
• /
• 제19권1호
• /
• pp.40-47
• /
• 2009

최근에 분산 환경에서 서버를 거치지 않고 사용자가 요구하는 미디어 객체를 프록시로부터 직접 서비스하기 위한 동적 프록시 캐싱 기법이 제안되고 있다. 그러나 이러한 기법들은 멀티미디어 데이터 크기, 지연시간, 연속적인 미디어 객체 서비스 요구 등으로 인하여 여러 문제점들이 제기되고 있다. 본 논문에서는 이러한 문제를 해결하기 위하여 분할과 사상기반의 퍼지필터링에 의한 캐싱 그룹화 기법을 제안하였다. 분할과 사상을 위해 미디어 블록세그먼트를 고정분할 참조블록(RfP)와 가변분할 참조블록(RvP)로 구분하였으며, 시멘틱 관계성을 위해 고정분할 시간동기화(Tf)와 가변분할 시간동기화(Tv)에 의해 퍼지 관계성이 수행되도록 하였다. 시뮬레이션 결과 제안된 기법이 평균 요청응답률과 캐시 히트율을 증가시키고 시간지연율을 줄이며 스트리밍 서비스를 효율적으로 수행하게 됨을 알 수 있다.

• 대한토목학회논문집
• /
• 제31권3D호
• /
• pp.441-450
• /
• 2011

최근의 건설공사는 대형화되고 있고 복잡한 시설물들을 포함하고 있으며, 공사비와 공기관리를 위해 프로젝트관리시스템(PMIS)을 적용하고 있다. 국토해양부에서도 산하 공공 발주공사의 사업관리를 위해 건설 CALS 시스템을 사용하고 있다. 본 연구에서는 현재 사용중에 있는 건설 CALS 시스템의 세부 기능 분석을 통해 적용 문제점을 도출하여 실무 활용성을 확대할 수 있는 개선 기능을 제시하고 있다. 국토해양부 산하 5개청에서 발주되는 공사는 모두 건설 CALS 시스템을 PMIS 대용으로 사용하고 있으나, 사용 기능은 제한적이고 소수의 실무진에 의해서만 활용되고 있고, 특히 CALS에 사용되는 각종 공사정보가 단편적 수치 정보로 구성되어 관리자의 정보 이해도 및 수준별 활용도가 저하되어 있는 것으로 파악되었다. 본 연구에서는 CALS 시스템의 활용성 확대를 위한 새로운 기능들의 구성방안과 정보시각화를 위해 세부 기능별로 4D 객체 연동 방안을 제시하고 있다.

• 대한기계학회논문집A
• /
• 제34권11호
• /
• pp.1555-1565
• /
• 2010

본 연구에서는 지하에 매설된 가스 파이프에 가해진 충격의 위치를 탐지하기 위한 개선된 방법을 제시하고 있다. 가스 파이프에서 가스 누출은 건설 기계 장비에 의한 기계적 충격에 의해 발생하며, 가스 이송산업계에 치명적인 재해을 발생시킬 수 있다. 이와 같은 문제를 초기에 발견하고 조치를 취하기 위해 기존에는 충격 위치 탐지를 위해 상관 관계 기법이 사용되어 왔다. 하지만, 외부 충격에 의해 파이프 따라 전파되는 음향파의 분산 특성은 양쪽 센서에 측정되는 도착 시간을 사용하여 센서 사이에 도착 시간 지연을 예측하는데 상당한 에러를 발생 시킬 수 있다. 그래서 이 논문에서는 분산파 대신 직접파의 도착 시간 지연을 측정하기 위해 웨이블렛 기법을 사용하였다. 제안된 방법은 지하에 매설된 실제 가스 파이프에서 측정된 음향 신호에 적용하여 기존의 상관 관계 기법에 비해 외부 충격 위치를 추정하는데 보다 효과적임을 확인하였다.

• 한국실내디자인학회논문집
• /
• 제16권4호
• /
• pp.12-20
• /
• 2007

This study, as discussed herein, tries to understand how modern commercial buildings occur and develop in certain type of social and cultural conditions. There are many words standing for modern society, of which the most remarkable one is 'commercial society'. Commercial society is where goods are manufactured to one's taste and consumption is a way of communication and a way of discriminating one from the others by using different code. Nowadays, architecture gets more and more popular and becomes commercial object which is intended to the sign of the social meaning. So, the sign of commercial buildings varies according to the social and cultural backgrounds and kitsch is applicable to it. The original meaning of kitsch, which usually is considered an inferior copy of an existing style, is examined and applied to architecture in order for comprehension. Throughout this study, the types of commercial buildings are selected and immanent meaning to the psychology of consumers as applicable to commercial buildings is considered. Also, the trend of kitsch in commercial buildings is analyzed by classifying the image and code of a building's shape. In a conclusion of the study, two major points can be found; commercial building has a significant meaning in terms of design, and commercial building is the conceptual result of a continuous change in the relationship between society and art.

• 한국조경학회지
• /
• 제29권4호
• /
• pp.1-11
• /
• 2001

The purpose of this study is to re-interpretate the meaning of place from the perspective view of events. In the realm of events, time, process, and evolution are emerging as more important elements for better places rather than space or fixed physical elements. First, this study reviews the phenomenological contribution to the meaning of place by discussing differences between positivism and phenomenology. The phenomenological approach has strengths that can perceive individual experiences and idiosyncraises through a holistic approach and qualitative methods. However, it has weaknesses such as unpredictability, subjectivity and ambiguity. In order to overcome these weaknesses, the notion of singularities(pure events) on the metaphysical plane existing between nature and culture is explored via Deleuzean concepts(Post-structuralism); singularities become events(simulacre) through ´becoming´ and these events have meaning through this process in the particular place. By this process, the subject an feed a sense of place through this meaning. Events unexpectedly create a series of events and have impact in the future. Creating various events in the particular place requires many contextural settings where the embodied perceptions could take place. Describing the potentiality of embodied perceptions demands ´smooth space´ rather than ´striated space´. Smooth space refers to the space where orientations and linkages are in continuous variation. Recent architectural and landscape architectural design projects reveal that the emphasis is placed on the open-ended set of various events unfolding over time rather than the physical settings of the place. For better landscape design, new concepts need to be introduced and implemented. These new concepts should focus on creating a series of events and considering the evolution of the place over time through multi-contextural and rhizomatical synthesis rather than rigid and static master plan of SAD(survey-analysis-design) methodology.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2005년도 춘계종합학술대회
• /
• pp.163-166
• /
• 2005

최근 눈부신 무선 통신 기술의 발전은 위치정보 시스템과 위치 기반 서비스(Location-Based Service) 의 급속한 발전을 이루었다. 시공간 상에서 이동체에 대한 데이터베이스는 사용자에게 이동체의 현재위치 정보를 제공하는 것만큼 그 질의 결과의 유효시간 또한 매우 중요하다. 따라서 본 논문에서는 질의 점과 객체가 동시에 이동 중일 때 현재 질의 결과를 계산하는 방법과 그 질의 결과의 유효시간 및 유효시간 후의 질의 결과를 검색하는 방안을 제안한다. 이동 객체는 실시간으로 변화하기 때문에 현재 질의 결과가 조금만 시간이 지나도 잘 못된 정보가 될 수 있고 미래의 결과를 반복연산에 의해 계산하기 어렵기 때문에 우리는 수학식으로 유효 시간을 예측하고자 하는 것이다.

• Journal of Microbiology and Biotechnology
• /
• 제22권2호
• /
• pp.274-282
• /
• 2012

The object of this study was to assess the efficacy of Polycan from Aureobasidium pullulans SM-2001, which is composed mostly of beta-1,3-1,6-glucan, on osteoarthritis (OA)-induced by anterior cruciate ligament transection and partial medial meniscectomy (ACLT&PMM). Three different dosages of Polycan (85, 42.5, and 21.25 mg/kg) were orally administered once a day for 84 days to male rats a week after ACLT&PMM surgery. Changes in the circumference and maximum extension angle of each knee, and in cartilage histopathology were assessed using Mankin scores 12 weeks after Polycan administration. In addition, cartilage proliferation was evaluated using bromodeoxyuridine (BrdU). As the result of ACLT&PMM, classic OA was induced with increases in maximum extension angles, edematous knees changes, and capsule thickness, as well as decreases in chondrocyte proliferation, cartilages degenerative changes, and loss of articular cartilage. However, these changes (except for capsule thickness) were markedly inhibited in all Polycan- and diclofenac sodium-treated groups compared with OA control. Although diclofenac sodium did not influence BrdU uptake, BrdU-immunoreactive cells were increased with all dosages of Polycan, which means that Polycan treatment induced proliferation of chondrocytes in the surface articular cartilage of the tibia and femur. The results obtained in this study suggest that 84 days of continuous oral treatment of three different dosages of Polycan led to lesser degrees of articular stiffness and histological cartilage damage compared with OA controls 91 days after OA inducement, suggesting that the optimal Polycan dosage to treat OA is 42.5 mg/kg based on the present study.

• 한국실내디자인학회논문집
• /
• 제17권4호
• /
• pp.92-101
• /
• 2008

A new paradigm of design lays stress on the world of metaphysical concepts, and various attempts are being made to give meaning to psychological values. Hotel is a memorable place to remind of a special moment in one's life such as travel, marriage, meeting and so on. It also contains even more symbolism than other spaces as it is the place where the most primary and private act takes place apart from one's residence. As a result, it is also possible to communicate the message which a designer intends to convey through the user's recognition in the form of various symbolic expressions in space design. The designer communicates a meaning into a space through a symbolic system and creates a mutual consensus by means of the understanding structure of "designer-space-user". The user's diverse interpretations through a symbol are based on epistemology and consist of the primary, the secondary and the tertiary recognition structure system in the aspect of their contents. The primary structure depends on sensual perception, impressive idea and transcendental recognition based on metaphysical and perceptional association. The secondary structure includes casualty, continuous deduction and rational(integral) recognition. Finally, the tertiary structure is sublimation to the transcendental mental world beyond the boundary of emotion and it is classified into fundamental recognition structure on an object and archetypical recognition structure on an ego. These characteristics can derive systematic understandings and diverse interpretations on the symbol from the space of a hotel through the frame of analysis based on the artistic form of monosemous, polysemous and multidimensional frameworks and symbols. The framework of this analysis includes all the cases, and various methods which haven't been attempted in practice are presented. Therefore this study is not just a simple analysis of space but rather it will serve as a methodological tool for design that allows for various attempts of symbolic design concepts in the recognition structure system.

• 한국실내디자인학회논문집
• /
• 제19권1호
• /
• pp.16-26
• /
• 2010

In recent, as rediscovery of the modern value is developed through the support by the government and the reinterpretation of the traditional culture, a Korean-style house(Hanok) also becomes an object of interest. Among these various viewpoints to see the Korean-style house, the necessity of a new spatial design approach to contain the types and functions of the architectural space of the Hanok appropriate to the modern society is raised which is not a passive approach to preserve the existing cultural assets. Out of the methods of the new spatial design of the Hanok which reflect the paradigm of the times, this study has the purpose to make an approach from the viewpoint of 'Restoration design'. As the 21 st century started, the recycle design whose active discussion and performance is made largely by Europe and Japan can be called a design method in the hardware part which enables continuous adaptive use of a building by applying a new use purpose and method to a building which doesn't use the recycle design or has low efficiency. In that meaning, it can be considered to be a very important architectural activity historically, archltecturally and spatially. Based on the methodological characteristics of the recycle design, this study largely divides the types of recycle into coherent recycle and imagery recycle and dedto s detailed methods of space, consinto ion and material and wardrobe used for each case to analyze the methods of concrete recycle design through the methodological analysis of recycle cases of the existing modern buildings. For the objects of recycle cases of the Hanok made recently based on the design methods acquired here, it was examined how the architectural and spatial characteristics of the Hanok can be reconsinto ed through what kinrecycmethods. The approach of the recycle design is considered to be a cornerstone to show a new architectural and spatial value in the viewpoint of the Hanok existence in modern times.

• Journal of the Korean Institute of Landscape Architecture International Edition
• /
• 제2호
• /
• pp.102-108
• /
• 2004

In the city of Asia like Seoul and Tokyo, aggregate power is poured into the city making which is suitable in new age. Large-scale re-development is active in various places as the present condition, As for the various East Asian cities, high-level utilization conversion of the land and high conversion of the building are advanced. As for these realities, the re-development is advanced in the situation that has not been clarified enough though it is true that green of the city has decreased. This research was aimed at the clarifying the allocation of greenery when proceeding with town planning projects by quantifying the possibility of allocating greenery in the form of rooftop landscaping in redeveloped areas. Moreover, the distribution of the green in the re-development region was calculated and the coexistence level of green space was calculated, The realities of a desirable green were clarified in the spectacle by understanding a sight and spatial continuousness in the green. In order to clarify the potentiality of roof greenery revaluating, the research was conducted by analyzing from aerial photographs, in Tokyo and Seoul, And the flow of the research was conducted by selection of research object area, taking pictures, acquisition of the aerial photography, rearrangement the data and the analysis. As a result, I was able to prepare a land vegetation coverage classification chart and obtain data pertaining to the level of urban and green tract of land for the researched cities of Tokyo and Seoul. By analyzing this data, we were able to indicate patterns of greenery unable to be obtained through data from ratio of vegetation coverage and ascertain the effectiveness of rooftop landscaping.