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Development of a Wind Turbine Monitoring System using LabVIEW (LabVIEW를 이용한 풍력발전기 모니터링 시스템 개발)

  • 남윤수;김형기;유능수;이정완
    • Journal of the Korean Society for Precision Engineering
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    • v.20 no.5
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    • pp.92-98
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    • 2003
  • A wind turbine monitoring system is essential equipment fur the performance evaluation and mechanical load analysis of a wind turbine. A monitoring system using LabVIEW is developed in this study. This system monitors signals from a meteorological mast, wind turbine generator, and tower. The discrete signals which are sampled at t Hz are automatically saved on a data file in the unit of a day. Besides these basic functions, the developed monitoring system has the other several capabilities. One of them is the information access from a remote PC through the internet. A vision image of the test site area and data files that are produced by LabVIBW software can be uploaded to the main computer located in a remote site. An emergency backup system using UPS fur the power loss on the monitoring HW is also prepared, A detail explanation for the developed wind turbine monitoring system is presented in this study.

Design Optimization Using Conflicting Building Information - A case Study Focused on the View and Structure in High-Rise Building Design

  • Cheon, Janghwan
    • Architectural research
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    • v.15 no.2
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    • pp.69-75
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    • 2013
  • Within residential high-rise market there are many value determining factors. Site condition, view, program, units and structure are important parameters that are directly related to the financial aspect of the project. However, most of the studies of high-rise building design focus on the facade and the shape strategies from an esthetic point of view without considering these factors. The objective of this study is to investigate new design approach that incorporates site, program and structural information at an early stage as a generator of building form and explore a wide range of strategies to negotiate these factors in the process of design/decision making. Not being based on designer's subjective preference or style, architects still can create interesting building design through integration and negotiation of various building information. Since this form is based on real data, not just play of form, we can expect that this form has great potential to be developed into real one at the later design phase.

The Investigation of Residential Area Changes by the Provision of Urban Linear Parks - Case Studies of the Regenerated Street Parks and the Uncovered Stream Parks in Seoul - (선형공원 조성에 의한 주변 주거지의 변화 분석 - 서울시 재생 가로공원과 복원하천 수변공원 사례 연구 -)

  • Lee, Ju-Eun;Yang, Woo-Hyun
    • Journal of the Korean housing association
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    • v.27 no.6
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    • pp.45-55
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    • 2016
  • This study focused on the changes of residential area around the linear park. The goal of this study is to determine the value of linear park at the view of residents and discover the interaction between the linear park and the residential area around it. To investigate this goal, the researcher chose case sites, the regenerated linear park and the uncovered stream park. This study analyzed the site around the linear parks with four points of view, the organization of urban Fabric, architecture, the economic value of the site and the behavior of residents. This research adopted several research methodologies like aerial photograph analysis, road-view analysis, paper research, and field study, observation, and expert interview to approach as both quantitative and qualitative analysis. With that variation characteristic, the researcher determines the influence of linear park through the residential area around them. As the result, linear park gives positive effects of running sustainable residential area around them and acting as the pivot for the residential area. Also for the future, designers must consider this interactive relation between the linear park and residential area with the wide point of view.

A Study on the Site Selection and Orientation of Western House in Cheongju (청주(淸州) 탑동양관(塔洞洋館)의 입지선정(立地選定) 및 좌향(坐向)에 관한 연구(硏究))

  • Seo, Hyang-Soon;Lee, Min-Kyoung;Kim, Tai-Young
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2008.04a
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    • pp.197-202
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    • 2008
  • The purpose of this study is to clarify the site selection and orientation which have affected the western missionaries in construction of the first western house in Cheongju area. The results of this study are as follows; In the site selection, they chose Tap-Dong hill, by finding the higher position and taking a fine view of all natural elements, because the alters like the tomb of Confucius, the existing settlement Godang village, Dang Mt. are already located around this area. And also it was that they could easily go into Tap-Dong hill through the existing alleys, These alleys, generated near the original road of Tap-Dong hill, are developed to modern road system. These alleys affect western house's entrance and orientation. In deciding the orientation of house, korean people prefer to south and east by considering Feng-shui theory; otherwise western house, specially the first house has a southwestern aspect, because the western missionaries have a preference for the topography, entry, and view than a house facing south.

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Investigation on Selecting Optimal Wind Turbines in the Capacity Factor Point of View (이용률 관점에서의 최적 풍력발전기 선정에 대한 연구)

  • Woo, Jae-Kyoon;Kim, Byeong-Min;Paek, In-Su;Yoo, Neung-Soo;Nam, Yoon-Su
    • Journal of the Korean Solar Energy Society
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    • v.31 no.5
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    • pp.60-66
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    • 2011
  • Selecting optimal wind turbine generators for wind farm sites in the capacity factor point of view is performed in this study. A program to determine the best wind turbine generator for the maximum capacity factor for a site was developed. The program uses both the wind characteristics of the site of interest and the power curves of the wind turbines. The program developed was applied to find out optimal wind turbine generators of three different sites in complex terrain and successfully yielded the best site dependent wind turbine generators. It was also used to determine the best wind turbine generator of the wind farm currently operating in Korea and proved its usefulness. The program and methodology developed in this study considered to be very useful at the initial design stage of the wind farm to determine the best wind turbine generators for the site of interest.

Teachers' Perception and Attitude on Corporal Punishment : Application of Qualitative Content Analysis Method (체벌에 관한 교사들의 인식과 태도 : 질적 내용분석)

  • Choi, Tae-Jin
    • Journal of Fisheries and Marine Sciences Education
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    • v.25 no.2
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    • pp.375-392
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    • 2013
  • The This study attempted to analyze what perception and attitude teachers have on corporal punishment. For these purpose, 458 writings about corporal punishment that 140 teachers loaded on web-site were collected and were analyzed using qualitative content analysis. : First, each writing was open-coded according to specific theme or meaning relating to corporal punishment using Nvivo program. Second, coded materials were classified as a high category when having similar theme or meaning. As a result of this process, 2 highest categories, 6 high categories and 24 subcategories were yielded. Teachers with positive view on corporal punishment tend to think that corporal punishment has some educational values or usefulness and their views were classified as very positive view, limited-permissive view, and inevitable view. They thought that corporal punishment were closely related to teachers' authority. Teachers have negative views on corporal punishment on the basis that corporal punishment causes side effects, is contrary to essentials of education, violates human rights etc. Negative views that teachers have on corporal punishment were classified as absolutely negative view and negative view focused on side effects. They thought that corporal punishment were not related to teachers' authority. Comments have been made on positive view on corporal punishment from the perspective of reflective analysis and implications of the results on theory and practice were discussed with comments on research limitations.

A Study on the Components and Preferences of Street View - With external road at apartment house complex - (가로경관 형성요소의 선호도에 관한 연구 - 공동주택단지 외부도로를 중심으로 -)

  • Kim, Mu-Oh;Park, Hyang-Yong;Lee, Bong-Soo;Cho, Yong-Joon;Lee, Cheong-Woong
    • Proceeding of Spring/Autumn Annual Conference of KHA
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    • 2004.11a
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    • pp.233-238
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    • 2004
  • This study extracted and analyzed physical components of street view with external streets at large-scaled apartment house complex of Sangmu Housing Site Development District in Gwangju, examined factors affecting the image of street view and visual perceptional characteristics by image, analyzed relationship between components of street view and visual preferences of image and aimed to provide basic materials needed for making external street view at apartment house complex of high Qualify.

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An Analysis on Viewpoint and Characteristics of Preference for Urban Landscape Management - Based on the Site of View Management in woomyeon Mountain - (도시경관관리를 위한 조망점 및 선호특성 분석 - 우면산 조망관리대상지역을 중심으로 -)

  • Song, Byeong-Hwa;Yang, Byoung-E;Lee, Gyeong-Jin
    • KIEAE Journal
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    • v.7 no.5
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    • pp.107-114
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    • 2007
  • This study purposed to review the alternative criteria for preserving urban scenic view and establishing its management methods by selecting preliminary viewpoints to preserve the views of woomyeon mountain. The contents of this research consists of the representative urban scenic view by analyzing its viewpoints and landscape preference. For this study, seventeen preliminary viewpoints were selected, the ratio of visual structure was calculated by types of landscapes and an analysis was conducted on landscape preference through a questionnaire survey to draw results. Conclusively, various side studies through statistical method for characteristic analysis with preference elements about viewpoint and visual structure for urban landscape management. This research will contribute to management on objective point of view in environmentally friendly urban landscape planning.

A Study on Developing Korean Virtual Model for Internet Apparel Shopping -Men and Women's Body Proportion of 20's- (인터넷 의류 판매원 한국인 가상모델 개발을 위한 연구 -20대 남녀 인체 프로모션을 중심으로-)

  • Cheon, Jong-Suk;Choe, Hyeon-Yeong
    • Journal of the Ergonomics Society of Korea
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    • v.22 no.1
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    • pp.17-29
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    • 2003
  • This study was initiated to develop a methodology for devising Korean virtual models for apparel shopping at internet shopping site. The data base for this study was the Korean National Anthropometric Survey in 1997. The subjects were 493 women and 626 men in 20's. The researchers also measured 88 males and females in age 20's to suggest back and front depth proportions which are not available from the survey. The virtual models' figure types were classified by the heights, drop value and bust(chest) girth. It was evaluated whether it is needed to separate figure type with bust(chest) girth. The body sizes of virtual models were suggested for side view model and front view model in 13cm height. Four female virtual models were suggested for front view and side view. Eight male virtual models were suggested for front view and side view. Each virtual model's height, breadth and depth proportions were calculated. Shoulder breadth. Bust(chest) breadth, waist breadth, hip breadth and proportions were calculated for front view model. The bust(chest) depth, waist depth, abdomen depth, hip depth and proportions were calculated for side view model. Height proportions were suggested for female and male virtual models.

A Study on the Residential Character and the Consciousness of Housing Movement in the Public Rental Apartment - Focused on Permanent Rental and Fifty Years Period Rental Apartment - (공공임대아파트의 거주특성과 주거이동의식에 관한 연구 - 영구임대와 50년 임대아파트를 중심으로 -)

  • 장승재;박민용
    • Journal of the Korean housing association
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    • v.14 no.3
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    • pp.93-100
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    • 2003
  • Considering the present development situation of public rental apartment since 1982, the supply of homeless housing for low-income dwellers has contributed a amount of quantities, but has been deficient qualities in housing policy. To reflect the architect the properties of dwellers in rental apartment, this study is aimed at investigating the residential character and the consciousness of housing movement through questionaries in permanent rental apartment and fifty years period rental apartment complexes. The results of this study were as follows; The permanent rental apartment is dissatisfied with site location, site shape and building layout in housing environment view, the fifty years period rental apartment is dissatisfied with building area, rental bond, rental fee and maintenance cost in economics view. Housing type of movement preference hereafter is showed “rental apartment” as priority. Therefore, it is necessary to construct public rental apartment for low-income dwellers increasingly.