옥상 녹화 식물별 잡초 출현의 특성 및 관리방안

이빛나라,고아라,이은희 한국환경생태학회 2009 한국환경생태학회 학술대회지 Vol.19 No.1

옥상녹화 식재식물에 관한 연구 – 서울시를 중심으로 –

이빛나라,안근영,이은희 인간식물환경학회 2014 인간식물환경학회지 Vol.17 No.6

This study for the purpose of basic data provide the selection of plants of a green roof, was progress. The rooftop greening 160 places that are construction with the assistance of Seoul was to investigate the plant and food frequency that target. 293 species case of herbaceous, 105 species case of shrubs, 65 species of case of Trees has been planted. For an extract, were planted in a herbaceous frequently not be able to adapt to extreme weather. In the case of shrubs and trees, were planted in the high frequency of plant there is ornamental value is more difficult to manage. By rooftop greening developed land in a way to substitute for missing open green space is increased, there is a need to approach the future of rooftop greening in the concept of habitat. In the design phase ingredients and management must be selected good plant is seen necessary research in connection with this later.

집적 영상 시스템을 위한 향상된 이미지 매핑 방법

이빛나라,조용주,박경신,민성욱,Lee Bin-Na-Ra,Cho Yong-Joo,Park Kyoung-Shin,Min Sung-Wook 한국정보처리학회 2006 정보처리학회논문지B Vol.13 No.3

집적 영상(Integral Imaging) 시스템은 사용자가 특수 안경을 착용하지 않고 3차원 입체영상을 볼 수 있도록 해주는 무안경식 양안시차 디스플레이 방식 중 한가지이다. 집적 영상 시스템은 3차원 정보를 조금씩 다른 방향에서 제한된 크기로 촬영된 이미지인 기초영상(Elemental Image)의 형태로 저장한다. 그리고 이런 이미지들을 다시 렌즈 어레이를 통해서 보여주어 사용자들로 하여금 3차원 정보를 얻을 수 있도록 한다. 이런 기초영상은 컴퓨터 그래픽을 이용해서 만들어낼 수도 있는데 이런 집적 영상 방식을 CG(Computer Generated) 집적 영상 시스템이라고 한다. 그리고 컴퓨터를 이용해 기초영상을 만드는 과정을 이미지 매핑(Image Mapping)이라고 한다. 이제까지 제안된 이미지 매핑 방식에는 PRR(Point Retracing Rendering), MVR(Multi-Viewpoint Rendering), PGR(Parallel Group Rendering) 등이 있다. 그러나 이런 방식들은 계산양이 많거나 렌즈 어레이 개수의 증가에 의해 생성 속도에 영향을 받는 단점이 있어, 아직 가상현실 같은 실시간 CG(Computer Graphics) 응용 분야에서 사용하기 어려운 문제가 있다. 따라서 본 논문에서는 기존의 방법에 비해 속도 향상을 이룬 VVR(Viewpoint Vector Rendering)이라는 향상된 이미지 매핑 방법을 제안한다. 먼저 VVR 개념을 설명한 후 VVR을 사용한 집적 영상 시스템을 구현하여 MVR 방법과 비교 분석한 실험결과와 추후 개선되어야 할 방향을 제시한다. The integral imaging system is an auto-stereoscopic display that allows users to see 3D images without wearing special glasses. In the integral imaging system, the 3D object information is taken from several view points and stored as elemental images. Then, users can see a 3D reconstructed image by the elemental images displayed through a lens array. The elemental images can be created by computer graphics, which is referred to the computer-generated integral imaging. The process of creating the elemental images is called image mapping. There are some image mapping methods proposed in the past, such as PRR(Point Retracing Rendering), MVR(Multi-Viewpoint Rendering) and PGR(Parallel Group Rendering). However, they have problems with heavy rendering computations or performance barrier as the number of elemental lenses in the lens array increases. Thus, it is difficult to use them in real-time graphics applications, such as virtual reality or real-time, interactive games. In this paper, we propose a new image mapping method named VVR(Viewpoint Vector Rendering) that improves real-time rendering performance. This paper describes the concept of VVR first and the performance comparison of image mapping process with previous methods. Then, it discusses possible directions for the future improvements.

이빛나의 테니스 이야기 : 테니스 터널을 지나오며

이빛나 한국스포츠교육학회 2011 우리체육 Vol.- No.8

GPU를 이용한 개선된 뷰포인트 벡터 렌더링 방식의 집적영상시스템 프레임워크에 관한 연구

이빛나라,박경신,조용주,Lee, Bin-Na-Ra,Park, Kyoung-Shin,Cho, Yong-Joo 한국정보통신학회 2006 한국정보통신학회논문지 Vol.10 No.10

컴퓨터-생성 (Computer-generated, CG)집적영상시스템은 사용자들이 컴퓨터 그래픽을 이용해서 미리 만들어진 기초영상들을 렌즈 어레이를 통해 보게 되면 3차원 입체영상을 느낄 수 있도록 해주는 무안경식 양안시차 디스플레이 시스템이다. 이 때 CG집적영상시스템에 컴퓨터를 이용하여 기초영상을 만드는 과정을 이미지 매핑 (Image Mapping)이 라고 하는데, 뷰포인트 벡터 렌더링 (Viewpoint Vector Rendering, VVR) 이 미지 매핑 방식은 표현하는 대상의 크기나 시스템에서 사용하는 렌즈 어레이 기초렌즈의 개수에 영향을 받지 않아 실시 간 처리에 보다 유리하다. 본 논문에서는 실시간 3차원 그래픽 응용 프로그램에 보다 적합한 CG 집적영상시스템을 구축하기 위해 GPU(Graphics Processing Unit)를 이용하여 렌더 링 성능을 향상시킨 VVR 집적영상시스템 프레임워크(Framework)를 소개한다. 그리고 일반적인 기존의 VVR 구현 방법과 GPU를 이용하는 새로운 방식의 성능을 비교 분석하며, 상당한 성능 향상이 이루어졌음을 보여 준다. Computer-generated integral imaging system is an auto-stereoscopic display system that users can see and feel the stereoscopic images when they see the pre-rendered elemental images through a lens array. The process of constructing elemental images using computer graphics is called image mapping. Viewpoint vector rendering (VVR) method is one of the image mapping algorithm specially designed for real-time graphics applications, which would not be affected by the size of the rendered objects or the number of elemental lenses used in the integral imaging system. This paper describes a new VVR framework which improved its rendering performance considerably. It also compares the previous VVR implementation with the new VVR work utilizing GPU and shows that newer implementation shows pretty big improvements over the old method.

도시농업의 정책 및 현황 분석 -서울, 경기도 사례를 중심으로-

이빛나라,이은희,양다혜 인간식물환경학회 2013 인간식물환경학회지 Vol.16 No.3

Due to desire increment of urban agriculture, local government prepared to establish a ordinance and support, activation about urban agriculture. This study is investigated urban agriculture policy and case on Seoul and gyeonggi-do. The study purpose is providing the basic data for the research of urban agriculture activation. In case of seoul, is established an urban agriculture ordinance in 2007. Also nine of the borough in Seoul established an urban agriculture ordinance. Seoul make urban agriculture facilities about a school-garden,a rooftop-garden, an allotment. There are made for the purpose of education, experience, education on urban agriculture. The ordinance was enacted in 2011 when in Gyeonggi, offers educational programs and opportunities for leisure life to our residents to reclamation school garden, City farm, roof garden, and a farm on weekends. Seoul and Gyeonggi who underwent an ordinance before the law was enacted plan of reclamation urban agriculture has been systematically compared to other local governments. However, Actively utilized by the lack of interest of citizens is difficult. We thought need to research on unification of justice and related public relations type of urban agriculture, voluntary citizen participation plan judo, and urban agriculture in order to solve the problem.

집적 영상 시스템을 위한 향상된 이미지 매핑 방법

이빛나라,조용주,박경신,민성욱 한국정보처리학회 2006 정보처리학회논문지. 소프트웨어 및 데이터 공학 Vol.13 No.3

The integral imaging system is an auto-stereoscopic display that allows users to see 3D images without wearing special glasses. In the integral imaging system, the 3D object information is taken from several view points and stored as elemental images. Then, users can see a 3D reconstructed image by the elemental images displayed through a lens array. The elemental images can be created by computer graphics, which is referred to the computer-generated integral imaging. The process of creating the elemental images is called image mapping. There are some image mapping methods proposed in the past, such as PRR(Point Retracing Rendering), MVR(Multi-Viewpoint Rendering) and PGR(Parallel Group Rendering). However, they have problems with heavy rendering computations or performance barrier as the number of elemental lenses in the lens array increases. Thus, it is difficult to use them in real-time graphics applications, such as virtual reality or real-time, interactive games. In this paper, we propose a new image mapping method named VVR(Viewpoint Vector Rendering) that improves real-time rendering performance. This paper describes the concept of VVR first and the performance comparison of image mapping process with previous methods. Then, it discusses possible directions for the future improvements. 집적 영상(Integral Imaging) 시스템은 사용자가 특수 안경을 착용하지 않고 3차원 입체영상을 볼 수 있도록 해주는 무안경식 양안시차 디스플레이 방식 중 한가지이다. 집적 영상 시스템은 3차원 정보를 조금씩 다른 방향에서 제한된 크기로 촬영된 이미지인 기초영상(Elemental Image)의 형태로 저장한다. 그리고 이런 이미지들을 다시 렌즈 어레이를 통해서 보여주어 사용자들로 하여금 3차원 정보를 얻을 수 있도록 한다. 이런 기초영상은 컴퓨터 그래픽을 이용해서 만들어낼 수도 있는데 이런 집적 영상 방식을 CG(Computer Generated) 집적 영상 시스템이라고 한다. 그리고 컴퓨터를 이용해 기초영상을 만드는 과정을 이미지 매핑(Image Mapping)이라고 한다. 이제까지 제안된 이미지 매핑 방식에는 PRR(Point Retracing Rendering), MVR(Multi-Viewpoint Rendering), PGR(Parallel Group Rendering) 등이 있다. 그러나 이런 방식들은 계산양이 많거나 렌즈 어레이 개수의 증가에 의해 생성 속도에 영향을 받는 단점이 있어, 아직 가상현실 같은 실시간 CG(Computer Graphics) 응용 분야에서 사용하기 어려운 문제가 있다. 따라서 본 논문에서는 기존의 방법에 비해 속도 향상을 이룬 VVR(Viewpoint Vector Rendering)이라는 향상된 이미지 매핑 방법을 제안한다. 먼저 VVR 개념을 설명한 후 VVR을 사용한 집적 영상 시스템을 구현하여 MVR 방법과 비교 분석한 실험결과와 추후 개선되어야 할 방향을 제시한다.

서울시 중앙차로 버스정류장의 식재현황 조사에 관한 연구

이빛나라,김예슬,안근영,이은희 인간식물환경학회 2014 인간식물환경학회지 Vol.17 No.6

The purpose of this study is the provision of basic data of tree planting plan in the bus stop. In this study, it is investigated that the facility products and plant were intended for 115.3 km length of the median lane bus stop of 345 companies in Seoul. Facility in investigation was divided into rest facilities and information facilities. As a result, shelter, lighting facilities, route table, billboards and the bus announcement system had been installed in the all median lane bus stop. Other facilities such as a bench, a trash, etc. have been regarded as vitally installed things in addition. Through the survey, it was given that 15 species of herbaceous plant have been planted. Herbaceous species had been planted as disposable. Shrubs such a total of four have been planted, in case of tree a total of six species were planted. Shrubs compound and tree were investigated that the species diversity was insufficient. In addition, management has not been made, the plant was dead. Through the study of plants for the design improvement future bus stop and improvement of the quality by improving the urban environment, it is believed that the bus station can be re-created.

Genetic diversity and antibiotic resistance of Staphylococcus saprophyticus isolates from fermented foods and clinical samples

이빛나라,정도원,이종훈 한국응용생명화학회 2015 Applied Biological Chemistry (Appl Biol Chem) Vol.58 No.5

A multilocus sequence typing (MLST) scheme was developed to evaluate the genetic diversity and background of Staphylococcus saprophyticus strains of food and clinical origins. A total of 48 isolates from human urine samples (21 isolates), Doenjang (9 isolates), Myeolchi-jeotgal (6 isolates), Saeu-jeotgal (3 isolates), and sausages (9 isolates) were subjected to MLST using internal fragments of 7 housekeeping genes: aroE, dnaJ, glpF, gmk, hsp60, mutS, and pta. MLST analysis resulted in 26 sequence types (STs), and the eBURST algorithm clustered the STs into 4 clonal groups (CGs) and 6 singletons. The predominant STs, ST11 (16.7 %, 8/48), and ST7 (10.4 %, 5/48), belonged to the major CG, CG1 (12 STs, 60.4 %, 29/48), and comprised isolates from Doenjang and urine. CG2 and CG3 comprised isolates from sausages, while CG4 included isolates from Myeolchijeotgal and Saeu-jeotgal. Twenty of the S. saprophyticus isolates exhibited resistance to erythromycin, lincomycin, or tetracycline. Lincomycin resistance was identified from the ST10–12 isolates, all of which are variants of ST08 and were isolated from Doenjang and human urine samples. This MLST scheme established the genetic diversity within S. saprophyticus, and clustering of the STs using eBURST revealed a correlation between the genetic backgrounds and the origins of isolates, and a link between genetic background and acquisition of lincomycin resistance.

만성질환 노인의 경제적 부담, 물리적, 시간적 제약으로 인한 미충족 의료 요인

이빛나,윤석준 한국보건행정학회 2023 보건행정학회지 Vol.33 No.4

Background: The purpose of this study is to analyze the factors affecting the unmet healthcare needs of older people with chronic diseases in Korea and provide a basic research report to strengthen their access to medical care. Methods: In the 2020 older people survey data, 8,182 older people aged 65 or older who were diagnosed with one or more chronic diseases were the final subjects of the study. According to Andersen’s behavioral model used in unmet healthcare needs, independent variables were composed of predisposing factors, possible factors, and necessary factors, and whether or not unmet healthcare needs was set as dependent variable. Results: Of the older people with chronic diseases, 1.6% experienced unmet healthcare needs, of which 55.9% experienced unmet healthcare needs for reasons related to economic burden, 31.6% physical constraints, and 12.5% time constraints. As a result of the analysis, older people with chronic diseases were more likely to experience unmet healthcare needs if they were relatively low in age, low in education level, no spouse, low in household income, poor subjective health, complex chronic diseases, and functional restrictions. However, by major reasons for experiencing unmet healthcare needs, living in rural areas were more likely to experience unmet healthcare needs due to physical constraints, and those who participated in economic activities and who had were more likely to experience unmet healthcare needs due to time burden. These results were not derived when only unmet healthcare needs was set as the dependent variable. Conclusion: This study emphasizes the need for an approach by cause of unmet medical occurrence by suggesting that there are differences in influencing factors by reason for experiencing unmet healthcare needs.