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International Conference on Advances in Agricultural, Biological & Environmental Sciences (AABES-2015, London)

作者： Jong-Il Park Mihyang Lee Seung-Hoon Han Master's program in Architectural Engineering with Graduate School of Chonnam National University Interdisciplinary Program of Cultural Properties with Graduate School of Chonnam National University Architecture at Chonnam National University

This study aims to determine the factors to assess the habitability of the modernized Korean traditional housing complex called New-Hanok Village and examine evaluation methods for its components in aspects of the urban planning. To determine the specificity of New-Hanok Village, it is necessary to assess major factors towards the habitability such as Feng-Shui and Yin-Yang. Five design elements of contemporary Hanok residential complex and their characteristics have been investigated to respond to needs of modern people with defining assessment factors derived from the VE(Value Engineering) operation by the evaluation system for the habitability. Through this process, the value of the New-Hanok Village could be settled and its data could be classified. In addition, it would be possible that designers can make decisions quickly by offering necessary plans and element details, while builders would be able to reduce cost and shorten construction period by the whole VE process.

关键词： Value Engineering New-Hanok Village Housing Planning Index Habitability Evaluation System

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Implementation of Intelligent Pre-Occupancy Evaluation for Hanok Performance

Implementation of Intelligent Pre-Occupancy Evaluation for H...

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International Conference on Advances in Agricultural, Biological & Environmental Sciences (AABES-2015, London)

作者： Tae-Ryong Kim Kyoung-Hee Kim Seung-Hoon Han Master’s program in Architectural Engineering with Graduate School of Chonnam National University Architecture at University of North Carolina at Charlotte Architecture at Chonnam National University

The purpose of this study is to suggest a physical comfort factor of Korean traditional residences called Hanok, and to make a composition of the monitoring system for comfort factors. For this study Hanok's degree of integrative comfort was analyzed and comfort performance has been classified. Comfort performance was divided into two large comfort performance categories: psychology cognitive factors and physical perception factors. In this research, composition of monitoring system for physical comfort performance is a key goal, so this study proposed a method of the monitoring system for physical perception factors. As a result, it is turned that the proposed system would have a pretty good applicability to the field.

关键词： Intelligent Pre-Occupancy Evaluation Hanok Performance Integrated Comfort Indoor Environment

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STRUCTURAL RETROFITTING OF EXISTING REINFORCED CONCRETE GIRDERS BY BEAM STRINGS

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AIJ Journal of Technology and Design 2022年第69期28卷 655-660页

作者： Shimizu, Keiichi Kato, Daisuke Nakamura, Takaya Graduate School of Science and Technology Niigata Univ. Japan Architecture Program Faculty of Eng. Niigata Univ. Japan

This report shows the structural retrofitting of a two-story reinforcedconcrete (RC) welfare-facility building in Niigata prefecture, which was built in 2002. During the Chuetsu earthquake in 2004, the first floor window under the bathroom was damaged. Our investigation revealed that the damage was caused by an error in the structural design and insufficient girder strengths. Thus, such RC girders were retrofitted using the beam string structures composing steel members. The stress was reduced by introducing a pushing force to satisfy the allowable stress. This method was simple, easy to install, and economical. © 2022 Architectural Institute of Japan. All rights reserved.

关键词： Reinforced concrete

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Influence of application of accurate airflow resistance on openings with different configurations of shading devices on the building thermal performance 33

Influence of application of accurate airflow resistance on o...

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33rd International on Passive and Low Energy architecture Conference: Design to Thrive, PLEA 2017

作者： Maciel, Liliane Oliveira, Matheus Barbosa, Sabrina Carlo, Joyce Tibiriçá, Álvaro Graduate Architecture and Urban Planning Program Federal University of Viçosa Viçosa Brazil Educational Institute Santo Agostinho Montes Claros Brazil Department of Production and Mechanical Engineering Federal University of Viçosa Viçosa Brazil

ISBN: (纸本)9780992895754

With large cooling potentials, natural ventilation is the main passive technique applied to tropical buildings. In computational simulations studies, the discharge coefficient (Cd) is required as a parameter to characterize the resistance the opening imposes to the airflow. As shape and angle of shading devices influence the airflow through the openings, accurate setting of Cd has a significant impact on the characterization of the cooling phenomena. This study investigates the effect of accurate Cd of five different configurations of shading devices. Using a classroom as a generic case, corrected Cd obtained from CFD models were used to simulations on the software EnergyPlus identifying airflow levels and periods of thermal comfort under the climate conditions of São Paulo. Results indicate that using 0.6 as a Cd value in the simulations is adequate for openings with shading devices that has a lower level of obstruction on the façade. However, for geometries with several slats and low angles, Cd values can be as low as 0.34. In this case, the airflow through the room decreases in average 15% in relation to the model that used usual Cd. The outcomes contribute to a more precise prediction of natural ventilation of buildings with shaded openings. © Copyright 2017 NCEUB.

关键词： Tropical buildings

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Molecular dynamics study of mechanical properties of monolayer graphene sheet 44

Molecular dynamics study of mechanical properties of monolay...

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44th European Physical Society Conference on Plasma Physics, EPS 2017

作者： Dela Cruz, C.J.M. Vasquez, M.R. Bo-ot, L.M.T. Energy Engineering Graduate Program College of Engineering University of the Philippines Quezon City Philippines Deparment of Mining Metallurgical and Materials Engineering College of Engineering University of the Philippines Quezon City Philippines College of Architecture University of the Philippines Quezon City Philippines

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Indoor temperature variation with different roof materials and natural ventilation 33

Indoor temperature variation with different roof materials a...

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33rd International on Passive and Low Energy architecture Conference: Design to Thrive, PLEA 2017

作者： Drach, Patricia R. Architecture and Urbanism Department School of Industrial Design State University of the Rio de Janeiro - DAU/ESDI/UERJ Rio de Janeiro Brazil Post-Graduate Program in Urbanism School of Architecture and Urbanism Federal University of Rio de Janeiro PROURB/FAU/UFERJ Rio de Janeiro Brazil Urban Engineering Program Federal University of Rio de Janeiro PEU/POLI/UFRJ Rio de Janeiro Brazil

ISBN: (纸本)9780992895754

This work involves experiments using subroutines developed by the author in Fortran language to calculate heat and mass transfer, and ventilation. The simulations were done to check the results of the influence of the application of different materials on a flat roof associated to passive ventilation. The target of this paper is to evaluate the use of subroutines developed to show air temperature changes, the heat transfer through a flat roof and the ventilation on a small prototype. The experiments conducted involved predictable results and that is exactly why they were suitable to check the performance of the subroutine. It is relevant to mention that the heat transfer through a flat roof was checked including a solar gain factor, which changes during the simulation using the subroutines, according to the hour of day (hourly from 7a.m. to 5p.m). The analysis started by solving the air-circulation problem to determine the wind fields, using a mixed stabilized finite element method, like Petrov-Galerkin, applied to the full Navier-Stokes equations. The thermal problem is analyzed through the SUPG - Streamline Up-wind Petrov-Galerkin stabilized finite element method. Computational simulations allow for testing low cost operational interferences before implementing a project. © Copyright 2017 NCEUB.

关键词： Ventilation

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RETRACTED ARTICLE: Intraspecific and Interspecific Interactions Mediated by a Phytotoxin, (–)-Catechin, Secreted by the Roots of Centaurea maculosa (Spotted Knapweed)

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Journal of Chemical Ecology 2004年第11期29卷 2397-2412页

作者： Weir, Tiffany L. Bais, Harsh Pal Vivanco, Jorge M. Department of Horticulture and Landscape Architecture Colorado State University Fort Collins USA Graduate Program in Ecology Colorado State University Fort Collins USA

Centarea maculosa Lam. (spotted knapweed) is one of the most destructive invasive weeds in the western United States, particularly in pastures and rangelands. One of the components that may contribute to its invasiveness is the naturally produced, root-secreted allelochemical (−)-catechin. This compound has been shown to have broad-spectrum phytotoxic activity, possibly assisting C. maculosa in displacing native plant communities. As a recently characterized phytochemical, little is known about the specific effect of (−)-catechin on either C. maculosa or other plant species. We have found that, in vitro, C. maculosa begins to secrete phytotoxic levels of (−)-catechin within 2–3 weeks of seedling emergence. Furthermore, (−)-catechin concentrations consistent with those naturally secreted by C. maculosa were sufficient to inhibit germination in all species tested, including C. maculosa. These concentrations were also often either phytotoxic or growth inhibitory to seedlings in a range of plant species, while having no negative effects on the growth of C. maculosa seedlings. However, our results also indicate that different levels of resistance and susceptibility to (−)-catechin exist in plant populations, suggesting that the capability of C. maculosa to invade an area through allelochemistry may be dependent on the age and species composition of plants in that area.

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Intermediate-scale Analysis of Landscape Characteristics Affecting Edge Formation in Burned Forests in Samcheok,Korea

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Journal of Mountain Science 2014年第2期11卷 384-397页

作者： Sang-Woo LEE Myoung-Soo WON Joo-Mee LEE Hai-Gyoung KIM Department of Design Konkuk University Kwangjin-Gu Hwayang-DongSeoul 143-701 South Korea Division of Forest Disaster and Fire prevention Korea Forest Research Institute Graduate Program Department of Landscape Architecture & Urban Planning Texas A&M University College Station Yirakjae Landscape Studio Songdong-Gu Hongik-Dong 210Seoul 133-880 South Korea

Compared to burn interiors, edges exhibit distinct biotic and abiotic conditions that include microclimate, wind speed, sunlight levels, soil composition, moisture content, nutrient availability, population density, and species diversity. This study characterized the landscapes in which burned forest edges formed in Samcheok, Korea. Over the study area, 500-m2 grid cells were generated to capture landscape characteristics. Grid cells intersecting burn boundary lines were designated as edge, while cells without these lines were classified as the interior of burned areas. Topographic variables including slope, elevation, topographic wetness index, solar radiation index, and proportions of fuel and land use types within grid cells were computed in a geographical information system(GIS). Correlation analysis with modified t-test and regression tree analysis were performed to explore the influences of landscape variables on edge formation with avoiding spatial autocorrelation problems. The results indicated that edges formed at low elevations with mild slopes, high topographic wetness, and low solar radiation. Edges were unlikely to form in areas dominated by Japanese red pines at low elevations. Moreover, heterogeneous land use/cover types contributed significantly to edge formation. Different forest management strategies for different landscape conditions can be more effective for enhancing resilience of forests to fire. Reducing susceptible fuel types might be effective at low elevations, while enhancing forest heterogeneity might be more effective at high elevations.

关键词： Forest fire Modified t-test, Edge formation Fuel type Topographic characteristics

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Bayesian estimation of dissipation and sound speed in tube measurements using a transfer-function model

arXiv

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arXiv 2024年

作者： Chen, Ziqi Xiang, Ning Graduate Program in Architectural Acoustics School of Architecture Rensselaer Polytechnic Institute TroyNY12180 United States

This study discusses acoustic dissipation, which contributes to inaccuracies in impedance tube measurements. To improve the accuracy of these measurements, this paper introduces a transfer function model that integrates diverse dissipation prediction models. Bayesian inference is used to estimate the important parameters included in these models, describing dissipation originating from various mechanisms, sound speed, and microphone positions. By using experimental measurements and considering a hypothetical air layer in front of a rigid termination as the material under test, Bayesian parameter estimation allows a substantial enhancement in characterization accuracy by incorporating the dissipation and sound speed estimates. This approach effectively minimizes residual absorption coefficients attributed to both boundary-layer effects and air medium relaxation. Incorporation of dissipation models leads to a substantial reduction (to 1%) in residual absorption coefficients. Moreover, the use of accurately estimated parameters further enhances the accuracy of actual tube measurements of materials using the two-microphone transfer function method. Copyright © 2024, The Authors. All rights reserved.

关键词： Inference engines

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Exploring New Garden City Theory Based on East Asian Landscape Culture Focusing on Community and Integrity

Exploring New Garden City Theory Based on East Asian Landsca...

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The 16th Symposium of Landscape architecture Korea,China and Japan

作者： Ahn,Myung-June nTi Landscaping/A Doctoral Degree in Interdisciplinary Program of Landscape Architecture Major Graduate SchoolSeoul National University

Landscapes and gardens have emerged as important practice media in modern *** paper looks at the city as a garden *** garden has been reset as a medium of activity for the *** is because it has become an important theme for urban regeneration and urban town *** this point of view,this paper examines and proposes "Integrated Garden Gity Theory" as a suitable landscape theory for our present *** is the process and result of asking again for the identity of the landscape architecture that has evolved over a *** of all,I noticed that the views of Ebenezer Howard and Frederick Law Olmsted was not very different in that they contained the seeds of the landscape architecture in the concept of garden and city.'Working landscape and responsive landscape' was the basic element of the city and the beginning of the landscape *** their ideals of the last century were not properly embodied in the city.I examined the concept of traditional gardens coming back,and the evolution direction of the corresponding landscape theory in the present East Asian *** conclusion is that a new garden needs to be re-established into the city's living infrastructure and that a new gardening landscape for it to *** accomplish this,the following three points are passed for each ***,the values of garden and East Asian garden culture in modern cities are shaped by community and ***,Korean communities represented by apartments are expressed as gardening,and the role of landscape architecture as a special field to support the reunification of city and life is needed Third the city-based daily life,and garden media based on the oriental view of nature,***-life-garden,will examine the integrated garden city theory as a systematic practice *** a result,it is confirmed that modern gardens and cities are finding important elements and values that need to be re-discovered in East Asian landscape culture

关键词： Garden City Landscape Culture Community Integrity Locality Intrinsic Beauty Nature

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