scholarly journals Identification and life cycle based allocation of building emissions based on a systematic literature review

2021 ◽  
Vol 2042 (1) ◽  
pp. 012177
Author(s):  
K Theilig ◽  
M Vollmer ◽  
W Lang
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Human Health ◽  
Systematic Literature Review ◽  
Implementation Strategies ◽  
Building Sector ◽  
Harmful Emissions ◽  
Use Stage ◽  
Zero Emission ◽  
Negative Impacts

Abstract Even though it is scientifically well known that there are various building emissions with harmful impacts on human health and the environment, existing evaluating approaches only refer to selected emissions and life cycle phases. Especially in today’s building sector harmful emissions are mainly evaluated in the use stage and the target is to minimize rather than avoid them. However, in order to avoid subsequent negative impacts, implementation strategies have to be developed and applied during early planning phases. This research presents an overview of relevant building emissions as well as a life cycle based approach to allocate these emissions and to show possibilities of influence towards zero emission buildings.

scholarly journals Sustainability Requirements of Digital Twin-Based Systems: A Meta Systematic Literature Review

2021 ◽  
Vol 11 (12) ◽  
pp. 5519
Author(s):  
Rui Carvalho ◽  
Alberto Rodrigues da Silva
Keyword(s):  
Life Cycle ◽  
Literature Review ◽  
Systematic Literature Review ◽  
Environmental Sustainability ◽  
Product Life Cycle ◽  
Data Communication ◽  
Three Dimensions ◽  
Digital Twin ◽  
The Subject ◽  
Reducing Costs

Sustainable development was defined by the UN in 1987 as development that meets the needs of the present without compromising the ability of future generations to meet their own needs, and this is a core concept in this paper. This work acknowledges the three dimensions of sustainability, i.e., economic, social, and environmental, but its focus is on this last one. A digital twin (DT) is frequently described as a physical entity with a virtual counterpart, and the data, connections between the two, implying the existence of connectors and blocks for efficient and effective data communication. This paper provides a meta systematic literature review (SLR) (i.e., an SLR of SLRs) regarding the sustainability requirements of DT-based systems. Numerous papers on the subject of DT were also selected because they cited the analyzed SLRs and were considered relevant to the purposes of this research. From the selection and analysis of 29 papers, several limitations and challenges were identified: the perceived benefits of DTs are not clearly understood; DTs across the product life cycle or the DT life cycle are not sufficiently studied; it is not clear how DTs can contribute to reducing costs or supporting decision-making; technical implementation of DTs must be improved and better integrated in the context of the IoT; the level of fidelity of DTs is not entirely evaluated in terms of their parameters, accuracy, and level of abstraction; and the ownership of data stored within DTs should be better understood. Furthermore, from our research, it was not possible to find a paper discussing DTs only in regard to environmental sustainability.

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