1,720,956 research outputs found
Designing façade and envelope for a high-rise residential building using energy-efficient materials: A case in Istanbul, Turkey
No full textThe construction industry is responsible for 40% of global energy demand as buildings increase heating, cooling, and lighting demand. Therefore, building energy performance has become one of the most significant subjects for the architecture, engineering, and construction (AEC) industry in the last decade. The envelope of a building has an essential role in optimizing energy performance and consumption. The research objective of this study is to analyse and compare the impact of different envelope and facade materials on building energy performance for a high-rise residential building. The research methodology includes a literature review and a case study. The literature review analysed studies published between 2015 and 2021. In the literary review, 84 publications were extracted from Web of Science and Scopus databases, and the following sources were included: articles published in prominent journals, conference proceedings, thesis, scientific reports, and books. In the case study, passive strategies including building shape, orientation, insulation, window-wall ratio, and shelter were implemented in a 10-story residential building in Istanbul, Turkey. Design-Builder and EnergyPlus were used for analysing and comparing the energy performance of the different wall, insulation, and glass materials used in the building. Results demonstrate that each parameter and material has a considerable impact on the building energy performance. This study would contribute to the AEC literature and industry by comparing different envelope materials' energy performance and the proper scenario according to Turkey(Istanbul)'s climate. Policy-makers and decision-makers can benefit from the results of this research and amend the existing codes and policies for new high-rise buildings
Evaluating the impact of building envelope on energy performance: Cooling analyses
No full textBuildings require a significant amount of energy for heating, cooling, and lighting. Hence, building energy performance has become one of the most important topics in the
architecture, engineering, and construction (AEC) industry in the last decade. The building envelope plays a critical role in maximizing energy efficiency and decreasing
energy consumption generally. The research objective of this study is to examine and compare the effects of three different building envelope types on energy performance in
a high-rise residential building. A literature review and case study were performed for achieving the research objective of this study. In the literature review, records (i.e.,
journal articles, conference proceedings, and scientific reports) published between 2011 and 2021 were included, and Web of Science and Scopus databases were used. In the
case study, passive methods including building design, orientation, insulation, and window-to-wall ratio were employed for a 10-story reinforced concrete residential
building in Istanbul, Turkey. The energy performance of the different wall, insulation, and glass components utilized in the building was analyzed and compared via
DesignBuilder software. Findings show that each parameter and material have a significant impact on the energy performance of a structure. This research would make
a noteworthy contribution to the AEC literature and industry by analyzing the energy performance of different building envelope types and the appropriate scenarios based
on the location. The results of this study can be used by policymakers and decisionmakers to revise existing codes and policies for new high-rise buildings.Publisher versio
Yüksek katlı konutun dış cephe malzemeleri için karşılaştırmalı enerji simülasyonu: ısınma ve soğuma verimliliği analizi
No full textThe interest in building energy performance and efficiency has been increasing in the last decades. Although several studies on energy-efficient buildings exist in the architecture, engineering, and construction (AEC) literature, none of them addressees the heating and cooling performance of high-rise building envelope materials. Such research would be a valuable guideline for the early decision-making process in energy-efficient high-rise building design. This study aims to (1) build up a knowledge base for exploring the optimal building envelope components based on the relevant aspects of energy performance to design energy-efficient high-rise buildings and (2) analyze and compare the effects of three different building envelope materials (i.e., reinforce concrete, timber wall, and curtain wall) on energy performance of a high-rise residential building. For this purpose, first, Cite Space, VoSViewer, and Gephi were used for building up a knowledge base in building energy performance. Then, various scenarios for evaluating the impact of envelope components (e.g., wall structure, window-to-wall ratio, and site orientation) were developed and analyzed. Efficient scenarios were opted for developing analyses in terms of floor, roof, and glazing type to decrease the heat loss/gain in the roof, floor, and glazing. Design Builder was utilized to design and model the case study building based in Istanbul, Turkey, and perform energy analysis for its heating and cooling efficiency by focusing on walls, roof, and ceiling (considering the building's orientation), window-to-wall ratio (WWR), and insulation. This research contributes to the AEC literature and industry by providing (1) detailed information about influential factors in heat loss/gain, (2) the factors to achieve energy efficiency and to decrease heating and cooling demand in high-rise buildings, (3) combinations for energy efficient building envelope materials, and (4) knowledge base for an efficient heating ventilation air conditioning system design for high-rise residential buildings. Accordingly, the results would be very useful for assisting professionals in the decision-making process of energy-efficient high-rise residential building design. Further, this study reveals promising topics in this scope for future research.Binaların enerji performansına ve verimliliğine yönelik ilgi son yıllarda artmaktadır. Mimarlık, mühendislik ve inşaat (AEC) literatüründe enerji verimli binalar üzerine çeşitli çalışmalar olmasına rağmen, bunların hiçbiri yüksek bina kabuğu malzemelerinin ısıtma ve soğutma performansını ele almamaktadır. Böyle bir araştırma, enerji verimli yüksek bina tasarımında erken karar verme süreci için değerli bir kılavuz olacaktır. Bu çalışma, (1) enerji verimli yüksek binalar tasarlamak için enerji performansının ilgili yönlerine dayalı optimal bina kabuğu bileşenlerini keşfetmek için bir bilgi tabanı oluşturmayı ve (2) yüksek katlı bir konut binasının üç farklı bina kabuğunun (yani, betonarme, ahşap duvar ve perde duvar) etkilerini enerji performansı üzerine malzemeler analiz etmeyi ve karşılaştırmayı hedeflemektedir. Bu amaçla, bina enerji performansında bir bilgi tabanı oluşturmak için ilk olarak Cite Space, VOSViewer ve Gephi kullanılmıştır. Daha sonra, zarf bileşenlerinin etkisini değerlendirmek için çeşitli senaryolar (ör. duvar yapısı, pencere-duvar oranı ve saha yönelimi) geliştirilmiş ve analiz edilmiştir. Çatı, döşeme ve camdaki ısı kayıp/kazanımını azaltmak için zemin, çatı ve cam tipi bazında analizler geliştirmek için verimli senaryolar tercih edilmiştir. Design Builder, Istanbul, Turkiye'de olan vaka çalışması binasını tasarlamak ve modellemek ve duvarlara, çatıya ve tavana (binanın yönelimi dikkate alınarak), pencerenin duvara oranına odaklanarak binanın ısıtma ve soğutma verimliliği için enerji analizi yapmak amacıyla kullanılmıştır. Bu araştırma, (1) ısı kayıp/kazancındaki etkili faktörler, (2) yüksek binalarda enerji verimliliğini sağlayan ve ısıtma ve soğutma talebini azaltan faktörler, (3) enerji açısından verimli bina kaplama malzemeleri için kombinasyonlar ve (4) yüksek katlı konut binaları için verimli bir Isıtma Havalandırma Klima Sistemi tasarımı için bilgi tabanı hakkında ayrıntılı bilgi sağlayarak AEC literatürüne ve endüstrisine katkıda bulunmaktadır. Buna göre, sonuçlar, enerji verimli yüksek katlı konut bina tasarımının karar verme sürecinde profesyonellere yardımcı olmak için çok faydalı olacaktır. Ayrıca bu çalışma, gelecekte yapılacak araştırmalar için bu kapsamda umut vaat eden konuları ortaya koymaktadır
Science mapping the knowledge domain of energy performance research in the AEC industry: A scientometric analysis
No full textThis study aims to reveal the current state of energy performance research in the AEC industry and literature. The research objective is to identify hot topics (i.e., knowledge domain) and hot keywords (i.e., knowledge base), productive countries and institutions, research gaps, and emerging areas in this domain (i.e., knowledge evolution). For this purpose, systematic bibliometric and scientometric analyses were performed by referring to 5489 bibliometric records published between 1991 and 2023. CiteSpace, VOSviewer, and Gephi were used for performing scientometric analysis. The key points include (1) promoting research collaborations between countries and institutions, (2) uncovering gaps and requirements of optimizing energy performance through pre-construction, construction as well as operation and maintenance phases, (3) identifying the target market for stakeholders, investors, and policymakers, and (4) guiding to determine the common grounds for international regulations and policies. Further, this study presents a knowledge map summarizing the prominent research results. The contribution is to provide a holistic comprehension of the recent status, hot keywords and topics, productive countries and institutions, research gaps, and emerging areas of energy performance. The gaps revealed in this study show possible future research directions, necessities, and the fields that should be investigated. Accordingly, this research would be a valuable guideline for professionals focusing on energy performance
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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