1,720,982 research outputs found
Impact of Climate Change on High-Performance Belgian Houses: Thermal Comfort, HVAC Energy Performance, and HVAC GHG Emissions
Get PDFClimate change arising from natural and anthropogenic sources affects the built environment in several ways. One of the major impacts of climate change is the increase in average air temperatures that can lead to more intense, severe, and prolonged heatwaves. This study is developed to project the effect of such warming weather conditions on Belgian high-performance houses and provide an idea of mitigation strategies. The study consists of three main parts (Part I, Part II, and Part III). In Part I, the study investigates a large number of thermal comfort/overheating evaluation methods to find a fit-to-purpose and appropriate method. It then provides a critical and qualitative review of resilient cooling strategies that can be applied as mitigation strategies. In Part II, a comprehensive simulation-based methodological framework is introduced to assess and compare the resistivity of buildings and their cooling strategies to the overheating impact of climate change. This part also provides an extensive weather dataset to estimate the changes in weather conditions and heatwaves in Belgium by the end of the century under different emission scenarios. In Part III, numerical studies are performed to predict the changes in thermal comfort conditions, HVAC energy performance, and HVAC Greenhouse Gas (GHG) emissions in Belgian high-performance houses due to climate change. This part includes the evaluation of a set of active and passive cooling strategies based on uncertainty analysis, sensitivity analysis, and optimization techniques. Some of the key findings of this study are (i) current building policies and regulations in the region fail to quantify overheating in the context of climate change accurately, (ii) a heating-dominated region like Belgium is expected to become a cooling-dominated one by the end of the century, (iii) replacement of traditional HVAC systems with more efficient ones (e.g., reversible air-to-water heat pump) has a potential of reducing HVAC primary energy use and HVAC GHG emissions up to 13% and 27%, respectively, (iv) passive cooling design strategies, such as natural ventilation, lowering infiltration rates, insulation, use of thermal mass, green roof, and shading devices are highly effective in achieving comfort and energy efficiency benefits, and (v) the use of active cooling systems to deal with more severe heatwaves will become inexorable in the coming decades. Overall, climate change is a global concern. Governments and policymakers must react swiftly by encouraging proactive adaptation to limit its unfavorable consequences. This can be achieved by establishing a clear path for well-adapted building stock with quantitative targets backed up with appropriate inspection, enforcement, and access to finance
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Get PDF“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
IOhD (Calculation & illustration), IOcD (Calculation & illustration), AWD (Calculation & illustration), ACD (Calculation & illustration), CCOhR (Calculation), CCOcR (Calculation), Zonal OpT (illustration), and HWs (illustration)
No full text3. Good health and well-beingA Matlab code with an example workspace is provided for IOhD (Calculation & illustration), AWD (Calculation & illustration), CCOhR (Calculation), Zonal OpT (illustration), and HWs (illustration).
An Excel file is provided for IOhD (Calculation & illustration), IOcD (Calculation & illustration), AWD (Calculation & illustration), ACD (Calculation & illustration), CCOhR (Calculation), and CCOcR (Calculation).
The users should adapt the code and the Excel file based on their needs in terms of building zones and weather scenarios,...
IOhD: Indoor Overheating Degree
IOcD: Indoor Overcooling Degree
AWD: Ambient Warmness Degree
ACD: Ambient Coldness Degree
CCOhR: Climate Change Overheating Resistivity
CCOcR: Climate Change Overcooling Resistivity
OpT: Operative Temperature
HW: Heat Waves0
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Modelling the Influence of Climate Change on Current and Future Residential Buildings in Relation to Occupant Thermal Comfort and Overheating Risks
Get PDFDispelling the Myths Behind First-author Citation Counts
Get PDFWe 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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