• 제목/요약/키워드: layout characteristics

검색결과 592건 처리시간 0.031초

디스크 기반 그래프 엔진의 입출력 성능 향상을 위한 그래프 오더링 (Improving the I/O Performance of Disk-Based Graph Engine by Graph Ordering)

  • 임근학;김정현;이은재;서지원
    • 정보과학회 컴퓨팅의 실제 논문지
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    • 제24권1호
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    • pp.40-45
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    • 2018
  • 빅데이터와 소셜 네트워크의 발전과 더불어 거대한 그래프를 처리하는 연구도 활발하게 진행되고 있다. 최근 그래프 처리의 성능 향상을 위해 Gorder 라는 그래프 오더링 기법이 제안되었다. 이 기법은 메모리 상의 그래프 레이아웃을 변형하여 데이터 접근 패턴을 CPU 캐시에 적합하게 바꿈으로써 성능을 향상시킨다. 하지만 그래프 알고리즘의 캐시 지역성에만 초점을 두고 설계되었기 때문에 디스크 기반 그래프 엔진에서는 적합하지 않고 전처리 비용도 크다는 문제점이 있다. 제시한 문제점을 해결하기 위해, 본 논문에서는 새로운 그래프 오더링인 I/O Order를 제안하였다. I/O Order는 디스크 기반의 그래프 엔진에서 지역성 외에 입출력 부하를 고려하여 설계되었다. 또한, 오더링 비용을 줄이기 위해 간단한 scheme을 사용한다. 본 논문에서 제시된 I/O Order는 Gorder와 비교해 전처리 비용이 최대 9.6배 감소하였고 성능은 지역성이 낮은 그래프 알고리즘에서 Random 대비 최대 2배 이상 향상되었다.

코하우징 계획을 위한 주민참여 워크숍 사례 - 30~40대 주부를 대상으로 - (A Case on Residens' Participation Workshop for Cohousing Plan)

  • 조정현;최정신
    • 가정과삶의질연구
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    • 제27권6호
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    • pp.155-169
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    • 2009
  • Resident participation plays much of a rule to the cohousing, which is organized independently and has the characteristics of community life, especially in the initial state of cohousing process. However, it is hard to realize the resident participation in proper order due to lack of a personal time, individual effort and an insufficient knowledge related with cohousing. So, it is thought that the guidance of cohousing expert and coordinator is needed to enable the residents to perform in an active attitude. The development of educational program and workshop connected with resident participation is also accompanied. In this study, to make the positive and systematic participation of cohousing residents, we established the workshop program and performed workshop with our developed program, based on preceding researches and examples. We selected the object of workshop as five housewives in thirties and forties. Workshop was consisted of six process steps. (1) Introduction and question of workshop and cohousing (2) examining and arranging the opinion (3) Master plan of cohousing village (4) Planning of common living space (5) Planning of individual living space (6) Analysis of final results and evaluation of workshop. The workshop held six times and it took about five~six hours per each meeting. Workshop participants expressed their opinion actively and attended in a positive manner in order to the design of their desired village and cohousing. During workshop process, the players established the common target of their village by means of life card, target card game. Also, based on the common target, the layout of village was planned using a collage game and card arrangement game. By workshop activity, the members started to recognize the significance of participation on the drawing board and improve their technique of communication and decision-making. Furthermore, workshop process made it possible to approach the concrete forms of their cohousing village. Especially, in the closing phase, the participant satisfaction about workshop and cohousing is increased suddenly and expressed their intention to join the real workshop related with cohousing.

Environmental Investigation of a Long-term Care Hospital with Respect to COVID-19

  • Park, Min Woo;Shin, Seung Hwan;Cha, Jeong Ok;Lim, Hyeon Jeong;Kim, Jun Nyun
    • 한국환경보건학회지
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    • 제46권5호
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    • pp.599-609
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    • 2020
  • Objectives: Coronavirus disease 2019 (COVID-19) first emerged in December 2019 in Wuhan, China, and has rapidly become a global pandemic with over 26.4 million confirmed cases and approximately 871,000 fatalities worldwide as of this writing. In the Republic of Korea, disease clusters frequently occurred in long-term care hospitals where the majority of residents are elderly with underlying medical conditions. Despite the fact that public health authorities and local community health centers have put tremendous efforts into preventing the spread of disease, positive cases have continued to occur. Thus, the Korea Centers for Disease Control & Prevention rapid response team decided to conduct an environmental investigation of a long-term care hospital to identify whether environmental contamination has remained and contributed to the spread of COVID-19. Methods: An environmental investigation was conducted at Hospital A. The characteristics of the facility and its HVAC system were assessed by checking the layout and interviewing the people in charge. A total of 64 surface samples were collected from areas of concern, including patient rooms, toilets, elevators, and nurses' station. These samples were tested by a regional health and environmental research institute using real-time reverse transcription polymerase chain reaction. Results: All samples from Hospital A were confirmed to be negative. Through interviews with high-level personnel at the regional community health center, we found that extensive disinfection is frequently performed on potentially contaminated areas in Hospital A in accordance with government guidelines. Conclusion: The environmental control measures implemented in Hospital A had been sufficient for mitigating the risk of further infection, suggesting that such measures may also be effective for other long-term health care facilities.

여수세계박람회와 지역문화의 융합을 기반으로 한 패션문화상품 디자인개발 (Design Development of Fashion Cultural Products based on Convergence of International Exposition Yeosu and Regional Culture)

  • 김선영
    • 복식
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    • 제61권1호
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    • pp.58-68
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    • 2011
  • With Expo 2012 Yeosu to be held in 2012, this study intends to propose designs for fashion cultural products into which the characteristics of local cultures of Yeosu are fused. Using symbols of Expo 2012 Yeosu and cultural symbols of Yeosu City as motifs, this study will develop patterns and then, apply them to neckties, handkerchiefs, and T-shirts. Adobe Illustrator CS2 and Adobe Photoshop CS2 will be used. This study developed basic motifs so that cultural resources using camellia, Odong Island, and the Turtle Ship, which represent Yeosu City, could be well harmonized with the topic of Expo 2012 Yeosu. This paper set three basic motifs of new formative images, using graphic images that were made by omission of forms, simplification, overlap, repetition, and calligraphy of the name of Yeosu holding the event. Each set motif was expanded to three motifs again through change, conversion, and mixture of colors, and three types of repetitive applied patterns were developed through revolution, symmetry, repetition, and reversal of each motif. The modern and refined image for neckties, to which the developed motif was applied, was made by directly applying the repetitive pattern of each motif or by making $45^{\circ}$ revolution. For handkerchiefs, revolution, enlargement, reduction, and gradation were applied to the motif so the pattern could be highlighted to the maximum and finally, a colorful image was developed. For T-shirts, three designs-a half-sleeved box type, a sleeveless round neckline type, and a sleeveless V-neckline tight type-were developed, through which availability of the design was increased. Through enlargement, reduction, revolution, and repetition of each motif, this paper layout the pattern on the whole part of a T-shirt, pursuing a decorative and casual image.

부유식 파력발전장치용 계류선의 설계 및 안전성 검토에 관한 연구 (Investigation of Safety and Design of Mooring Lines for Floating Wave Energy Conversion)

  • 정동호;남보우;신승호;김현주;이호생;문덕수;송제하
    • 한국해양공학회지
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    • 제26권4호
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    • pp.77-85
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    • 2012
  • A study was performed on the design of a mooring line to maintain the position of a floating WEC (wave energy conversion) system. The procedure to design a mooring line is set up and the safety of the designed mooring system is evaluated using commercial software, Orcaflex. The characteristics curve for one line is analyzed to determine the properties and pretension of a mooring line. While considering the ocean environmental condition and importance of a floating WEC system, a multi-line layout is determined. A 4-point mooring system with 4 lines shows the instability in the yaw motion of the floating WEC system under a designed ocean environmental condition. The redesigned 4-point mooring system with 8 lines is found to be safe on the condition of a harsh ocean environment. The floating WEC system with the redesigned mooring system also shows stable motion in surge and pitch under operating conditions. From a parametric study on the mooring line length, the extreme value of the mooring line tension is found to be very sensitive to the pretension and length of mooring line. The results of this study can contribute to the establishment of a design procedure for mooring lines.

전원무결성 해석에 의한 PCB 전원안정화 설계기법 연구 (A study on Source Stability Design Method by Power Integrity Analysis)

  • 정기현;장영진;정창원;김성권
    • 한국전자통신학회논문지
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    • 제9권7호
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    • pp.753-759
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    • 2014
  • 본 논문에서는 전원무결성(Power Source Integrity) 해석을 기반으로 PCB(Printed Circuit Board)내부 전원 선로의 RLC 공진(Resonance)현상을 해석하고 PCB내부 공진현상 감쇄를 위한 설계기법을 제시한다. 제시하는 기법은 PCB의 구조적 특성으로 형성되는 공진주파수를 예측하며, 공진현상 감쇄를 위한 디커플링 캐패시터의 적용위치 및 용량을 결정할 수 있다. 본 논문에서는 산업용 제어기 내부의 메인보드 회로 시뮬레이션 모델을 통해서 PCB 공진현상 감쇄 설계기법에 대한 타당성을 검증하였다. 본 연구결과는 향후, PCB 회로 설계에서 PDN(Power Delivery Network)구조의 안정도 향상에 기여할 것으로 기대된다.

포괄적 주택개념에 기초한 장애인 및 노인주거 계획요소 (Planning Factor of the Housing for the Disabled and Aged based on the Inclusive Housing)

  • 김민경;남윤옥
    • 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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    • 제17권4호
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    • pp.57-68
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    • 2011
  • The purpose of this study is to provide the planning factors of housing for the disabled and elderly based on the inclusive housing design as sustainable neighborhood. The goal of inclusive design is to make buildings and communities more livable for all type of people. Inclusive design should embrace other good design goals and reinforce them, not work against them. To carry out this purpose, we should proceed in the following way: First, we deducted the four design factors (the basic, recommendable, adaptable, and residential factors) by reviewing the characteristics of inclusive housing concepts. Second, we analyzed the related foreign design standards and guidelines such as the ICC/ANSI A117.1 Type C Units (the United States, 2009), Lifetime Standard (the United Kingdom, 2010), and Livable Housing Design Guideline (the Australian, 2010) through four design factors based on inclusive design concepts. Finally, we suggested the housing design factors for the disabled and the elderly in Korea. To conclude, we can make the followings: It is important basic factor that the bedroom and bathroom layout closed to each other. Also, the bedroom has the proper height of light switches, outlets, and windows. The recommendable factors take into consideration stairs and ramp, if existent. The adaptable factors are closely related to domestic housing culture as well as residential factors. Proceeding from this fact, the livability for people with disabilities and older requires accessibility and adaptability that take into account public and efficiency considering the current trend of housing development and urban planning.

HTML 문서의 테이블 식별을 위한 효율적인 알고리즘 (An Efficient Algorithm for Detecting Tables in HTML Documents)

  • 김연석;이경호
    • 한국멀티미디어학회논문지
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    • 제7권10호
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    • pp.1339-1353
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    • 2004
  • HTML의 table 태그는 연관된 정보를 기술하기 위한 테이블은 물론이고 웹 문서의 레이아웃을 표현하기 위하여 사용된다. 본 논문에서 는 웹으로부터 유용한 정보를 추출하기 위한 목적의 일환으로 HTML 문서로부터 테이블을 식별하는 효율적인 방법을 제안한다. 제안된 방법은 전처리와 속성-값 연관관계 추출의 두 단계로 구성된다. 전처리 단계에서는 진짜 테이블 또는 레이아웃용으로 사용된 table 태그의 일반적인 특징을 반영한 규칙을 적용하여 진짜 또는 가짜로 명확히 식별이 가능한 table태그를 추출한다. 속성-값 연관관계 추출 단계에서는 테이블 영역을 속성 및 값 영역으로 구분한 후, 값 영역에 대하여 구문적 일관성 검사를 수행한다. 또한 값 영역의 크기가 작아서 구문적 일관성 검사를 수행할 수 없는 경우, 속성-값 영역의 의미적 일관성을 검사한다. 제안된 방법의 성능을 평가하기 위하여 1,393개의 HTML문서로부터 추출한 11,477개의 table 태그를 대상으로 실험한 결과, 평균적으로 97.54%의 정확률과 99.22%의 재현률을 보여 기존 연구보다 우수하였다.

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제주 현대건축의 지역성 구현 방식에 관한 연구 (A Study on the Realization Method of Locality about Jeju Contemporary Architecture)

  • 김형준
    • 한국산학기술학회논문지
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    • 제19권3호
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    • pp.46-51
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    • 2018
  • 본 이 연구는 제주 건축에 있어서 지역성을 탐구하는 일련의 연구 중 하나이다. 본 연구에서는 외국 저명 건축가가 아닌 국내 건축가의 작품들을 중심으로 제주 건축의 지역성을 살펴보았다. 또한 개념적 측면이 아니라 현상적 측면에서의 지역성에 집중함으로써 현재적 상황에서의 지역성을 드러내고자 했다. 연구 분석 결과, 건축가들이 생각하는 제주의 지역성은 첫째, 해석학적 지역성으로서 제주 전통 건축의 재해석을 통한 건축적 적용이며, 둘째, 현상학적 지역성으로 제주가 가진 독특한 자연경관이나 풍경을 자신의 건축에 담아내려고 하는 것이었다. 이와 같이 건축가들이 생각하는 지역성을 구현하는 방식은 크게 두 가지로 분석되었다. 해석학적 지역성의 특징은 제주 전통 민가를 재해석하여 자신의 건축에 적용하는 경우로, 주로 공간구성이나 배치를 통해 민가의 요소를 건축으로 구현하고자 하였다. 현상학적 지역성의 특징은 제주의 경관과 풍경을 존중하여 이를 건축으로 구현하는 방식이었으며, 이 경우 경관이나 풍경요소를 그대로 건축에 차용하거나, 건축물이 제주 고유의 경관이나 풍경을 존중하여 이를 건축적으로 담아내는 경우에 해당하였다.

도시 단독주택 정원의 공간적 특징과 유지.관리에서 보이는 거주자의 정원 인식에 관한 연구 (Research on the Characteristics of Garden Design and Dwellers' Understanding of Garden Maintenance in Single Detached Urban Dwellings)

  • 조동범;김수란;김근호
    • 한국조경학회지
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    • 제34권6호
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    • pp.54-65
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    • 2007
  • There is little research on the exterior spaces or gardens of single detached urban dwellings in Korea because apartments are the general housing type of most inhabitants. However there is an increasing demand for idyllic houses in the urban fringe and for environmentally friendly dwellings or healthy houses that is represented in urban residents gardening activities. The purpose of this research is to analyze residents' preferences and problems in gardening and management of single detached urban dwellings, and to evaluate the possibility of gardens as biotopes. It also addresses the issue of providing public amenities in the urban landscape. One hundred thirty-six dwellings were selected in residential areas of the city of Gwangju. The layout and plant composition, residents' evaluation and understanding of their own gardens, and maintenance and management were investigated. The results indicated that residents associate gardening with mental health and recognized a lack of space as one environmental restriction. Watering was seen as a primary difficulty for maintaining gardens. This research suggests that providing space for gardening could be a tool for participatory community making. When considering the important aspects of gardening, residents responded that gardens offer naturalness, scenic beauty, and practicality and also felt that gardens provide a buffer from environmental pollution and relief from mental duress. Results from the factor analysis using 15 semantic differential variables showed that 'spatial openness', 'natural variety' and 'familiarity' were representative factors. Although a garden is mainly considered as a space for the appreciation of nature with plant material, our results suggest that meaning and environmental symbolism are important elements.