The Experts below are selected from a list of 82122 Experts worldwide ranked by ideXlab platform
Liyin Shen - One of the best experts on this subject based on the ideXlab platform.
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an integrated system of text mining technique and case based reasoning tm cbr for supporting Green Building design
Building and Environment, 2017Co-Authors: Liyin Shen, Hang Yan, Hongqin Fan, Yu ZhangAbstract:Abstract Green Building has been commonly accepted as an important strategy adopted by governments around the world for mitigating climate change and energy shortage problem. However, the selection and application of Green Building technologies under different situations usually puzzles designers, although various advanced technologies for Green Building are available. This study therefore introduces an integrated system of text mining and case-based reasoning (TM-CBR) to help designers retrieve the most similar Green Building cases for references when producing design for new Green Buildings. It is the first attempt in this study to integrate text mining technique into a CBR system to improve the efficiency of decision making in Green Building design. There are two major components of TM-CBR, case representation and case retrieval. Two kinds of case features, namely, identified features and textual features are used collectively to represent a Green Building case. Four value formats are considered to measure local similarity in the process of case retrieval. Seven cases are chosen randomly from 71 LEED collected cases as the target cases to test the effectiveness of the TM-CBR system. This study provides a new approach to retrieve the successful experience from similar previous cases to improve the effectiveness and adequacy of Green Building design.
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key credit criteria among international Green Building rating tools
Journal of Cleaner Production, 2017Co-Authors: I. M. Chethana S. Illankoon, Khoa N Le, Liyin ShenAbstract:Abstract The construction industry has a significant contribution towards numerous adverse environmental impacts. Therefore, Green Building concept has gained wide recognition. In line with this, numerous international Green Building rating tools have been developed providing a yardstick for measuring Green Building performance. These rating tools have different credit criteria for evaluating the Green Building performance. According to the existing literature, there are many researches comparing different Green Building rating tools on specific credit criteria such as “Energy”. However, there is a clear lack of research on establishing a baseline to develop new Green Building rating tools and to evaluate existing Green Building rating tools. Therefore, this research aims to establish key credit criteria based on an extensive literature study and evaluate these criteria based on widely used eight Green Building rating tools. The comparison analysis is based on a quantitative measure, namely, a normalised score, which is obtained through allocating credit points of selected Green Building rating tools to the established key credit criteria. The comparison result is presented with radar diagrams and bar charts. This research established seven key credit criteria for these rating tools which are namely (1) Site, (2) Energy, (3) Water, (4) Indoor Environment Quality (IEQ), (5) Material, (6) Waste and pollution, and (7) Management. It is found that ‘Energy’ criterion is the most widely considered key credit criteria and then followed by ‘IEQ’ and ‘Water’ criteria. Apart from that, credit criteria such as ‘Triple bottom line reporting’, ‘Education and awareness’, ‘Economic aspects relating to various costs’, ‘Sustainable designing and planning’ and ‘Stakeholder relations’ are identified as possible credit criteria which can be included in developing the rating tools in future. These key credit criteria can be adopted as a baseline to develop new Green Building rating tools, and it provides fruitful results to develop the existing tools further.
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A comparative analysis of waste management requirements between five Green Building rating systems for new residential Buildings
Journal of Cleaner Production, 2016Co-Authors: Zezhou Wu, Liyin Shen, Ann T W Yu, Xiaoling ZhangAbstract:The annual generation of construction waste is immense in both developed and developing economies. The environmental impacts caused by disposal of this waste stream are in multiple aspects, involving soil pollution, air pollution, water pollution, etc. Meanwhile, the Green Building concept is becoming more and more popular with the public; hence the Building developers are eager to obtain Green Building certifications to increase the added value of Buildings. Green Building rating system (GBRS) is a tool for evaluating whether a particular Building is Green or not, and corresponding rank is given according to the detailed assessment requirements. In previous studies, GBRS has acted as a guideline to improve energy use and indoor air quality. However, the effectiveness of GBRS as applied to construction waste management has not been explored. To bridge this research gap, this study examines five selected GBRSs worldwide and proposes a comparative analysis, attempting to give a better understanding of measures that assist in improving construction waste management. The importance of construction waste management in different GBRSs is evaluated according to the accumulation of the corresponding scores of the related assessment items. Furthermore, the foci of construction waste management in different GBRSs are investigated in three dimensions based on the "3Rs" principle which is referring to reduce, reuse and recycle. The research findings reveal that of the five rating systems studied, the highest relative significance index of waste management is given to Evaluation Standard for Green Building, while the lowest belongs to Green Building Index. In relation to the 3Rs principle, Evaluation Standard for Green Building and Green Globes focus more on the reduce principle, while the other three systems propose waste management measures that largely based on the reuse and recycle principles. Discussions are further given based on the outcomes of the comparative analysis, future research topics are suggested as well.
I Chethana M S Illankoon - One of the best experts on this subject based on the ideXlab platform.
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optimising choices of Building services for Green Building interdependence and life cycle costing
Building and Environment, 2019Co-Authors: I Chethana M S IllankoonAbstract:Abstract By influencing energy consumption, water use, and indoor environment quality, ‘Building service systems’ are indispensable to Green Building. In practice, Building services are chosen separately by different professions while they are literally interdependent on each other in determining the overall effectiveness and efficiency of Green Building. In addition, these Building services are chosen at the initial stage without necessarily considering their life-cycle costs (LCC). A more holistic view to consider the interdependence of various Building services throughout their life cycle is highly desired. Hence, this research aims to examine Building services in Green Building by considering both their interdependence and costs throughout the Building life cycle. The Hong Kong BEAM (Building Environmental Assessment Method) Plus is selected for a case study. Initially, the credits related to Building services are identified and mapped from the BEAM Plus. Afterwards, LCC of the credits are calculated using the net present value technique. It is discovered that by considering Building services' interdependence from a life cycle perspective, the choices of such Building services could be much different. A significant proportion of the LCC is related to operation, maintenance and replacement of the Building services, which cannot be offset by the savings of Green Building independently. However, there are benefits such as CO2 reductions, which can be used to make up the LCC if they can be properly monetised. The research provides significant insights to developers and their consultants in choosing cost-effective Building services with a view to better realising the value of Green Building.
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environmental economic and social parameters in international Green Building rating tools
Journal of Professional Issues in Engineering Education and Practice, 2017Co-Authors: I Chethana M S Illankoon, Khoa N LeAbstract:AbstractThe concept of sustainability is regarded to be threefold: environmental, economic, and social. This is usually identified as the triple bottom line of sustainability and is often represented by three intertwined circles. Therefore, for a construction to be sustainable, it should be environmentally, economically, and socially sustainable. However, the extent to which Green Building rating tools evaluate the three pillars of sustainability is questionable. This research aims to analyze the effectiveness of eight international Green Building rating tools in evaluating environmental, economic, and social sustainability in Buildings. The credit points of each rating tool was initially categorized based on the related category of sustainability and a comparison analysis was carried out based on a normalized score. Finally, the comparison result is presented with a radar diagram. Further, three case study Buildings were also analyzed based on the credit points achieved. Accordingly, environmental sustai...
Hugues Rivard - One of the best experts on this subject based on the ideXlab platform.
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floor shape optimization for Green Building design
Advanced Engineering Informatics, 2006Co-Authors: Weimin Wang, Hugues Rivard, Radu ZmeureanuAbstract:Shape is an important consideration in Green Building design due to its significant impact on energy performance and construction costs. This paper presents a methodology to optimize Building shapes in plan using the genetic algorithm. The Building footprint is represented by a multi-sided polygon. Different geometrical representations for a polygon are considered and evaluated in terms of their potential problems such as epistasis, which occurs when one gene pair masks or modifies the expression of other gene pairs, and encoding isomorphism, which occurs when chromosomes with different binary strings map to the same solution in the design space. Two alternative representations are compared in terms of their impact on computational effectiveness and efficiency. An optimization model is established considering the shape-related variables and several other envelope-related design variables such as window ratios and overhangs. Life-cycle cost and life-cycle environmental impact are the two objective functions used to evaluate the performance of a Green Building design. A case study is presented where the shape of a typical floor of an office Building defined by a pentagon is optimized with a multiobjective genetic algorithm. � 2006 Elsevier Ltd. All rights reserved.
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applying multi objective genetic algorithms in Green Building design optimization
Building and Environment, 2005Co-Authors: Weimin Wang, Radu Zmeureanu, Hugues RivardAbstract:Abstract Since Buildings have considerable impacts on the environment, it has become necessary to pay more attention to environmental performance in Building design. However, it is a difficult task to find better design alternatives satisfying several conflicting criteria, especially, economical and environmental performance. This paper presents a multi-objective optimization model that could assist designers in Green Building design. Variables in the model include those parameters that are usually determined at the conceptual design stage and that have critical influence on Building performance. Life cycle analysis methodology is employed to evaluate design alternatives for both economical and environmental criteria. Life cycle environmental impacts are evaluated in terms of expanded cumulative exergy consumption, which is the sum of exergy consumption due to resource inputs and abatement exergy required to recover the negative impacts due to waste emissions. A multi-objective genetic algorithm is employed to find optimal solutions. A case study is presented and the effectiveness of the approach is demonstrated for identifying a number of Pareto optimal solutions for Green Building design.
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an object oriented framework for simulation based Green Building design optimization with genetic algorithms
Advanced Engineering Informatics, 2005Co-Authors: Weimin Wang, Hugues Rivard, Radu ZmeureanuAbstract:Simulation-based optimization can assist Green Building design by overcoming the drawbacks of trial-and-error with simulation alone. This paper presents an object-oriented framework that addresses many particular characteristics of Green Building design optimization problems such as hierarchical variables and the coupling with simulation programs. The framework facilitates the reuse of code and can be easily adapted to solve other similar optimization problems. Variable types supported include continuous variables, discrete variables, and structured variables, which act as switches to control a number of sub-level variables. The framework implements genetic algorithms to solve (1) unconstrained and constrained single objective optimization problems, and (2) unconstrained multi-objective optimization problems. The application of this framework is demonstrated through a case study which uses a multi-objective genetic algorithm to explore the trade-off relationship between life-cycle cost and life-cycle environmental impacts for a Green Building design.
Qiu Baoxing - One of the best experts on this subject based on the ideXlab platform.
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from Green Building to low carbon eco city
Urban Studies, 2009Co-Authors: Qiu BaoxingAbstract:This paper reviews the development of China's Building energy-saving and Green Building in recent years.It then proposes the right development philosophy and measures for cities in China,i.e.low carbon urban development model with Chinese characteristics should tackle both individual Building level and city level-Green Building and low carbon eco-city-at the same time.It classifies low carbon eco-city into four major types and summarizes the initial exploration and implementation of eco-city in China including Sino-Singapore Tianjin Eco-city and Tangshan Caofeidian Eco-City.Based on domestic and international experiences of low carbon eco-city development,it proposes general strategies and specific requirements for low carbon eco-city planning and development in China,and lists key technologies and measures with highest potential for low carbon eco-city.
I. M. Chethana S. Illankoon - One of the best experts on this subject based on the ideXlab platform.
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Green Building evaluation system implementation
Building and Environment, 2018Co-Authors: Zhikun Ding, Yu Bian, Shenghan Li, I. M. Chethana S. Illankoon, Sungkon MoonAbstract:Abstract The Green Building concept is very popular worldwide. The adverse impact of construction on the environment significantly promotes the development of the Green Building concept worldwide. Green Buildings are generally termed as environmentally friendly Buildings. Therefore, over the past several decades, there have been many Green Building rating tools developed by institutions to evaluate these Buildings. However, a majority of the Green Buildings certified with these rating tools are assessed primarily on their design and construction. The life-cycle of a Green Building extends beyond these initial phases, with its full benefits becoming more apparent during the operational stages of the Building. However, there is a clear lack of Green Building projects obtaining Green certificates that evaluate the operational stages of the Building. Therefore, this research aims to identify the barriers preventing the certification of Green Buildings in their operational stages. Initially, commonly used international Green Building rating tools were identified and analysed on the evaluation criteria. Following this analysis, Chinese standards on Green Building evaluation were also discussed in detail. Furthermore, a case study Building with three-star certification for the operational stage was incorporated into the analysis. This case study Building was analysed with the Chinese standards, namely Chinese evaluation standard Green Building (ESGB) 2014, along with other international standards such as the Leadership in Environmental and Energy Design Leadership (LEED), the Building Research Establishment's Environmental Assessment Method (BREEAM), and Green Star. Structured interviews were also carried out to identify the barriers, while measures to overcome these barriers were also discussed. The inconsistency of government regulations, the inability of the market to protect developers' interests, and the inability to meet technical requirements were identified as the three main barriers.
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key credit criteria among international Green Building rating tools
Journal of Cleaner Production, 2017Co-Authors: I. M. Chethana S. Illankoon, Khoa N Le, Liyin ShenAbstract:Abstract The construction industry has a significant contribution towards numerous adverse environmental impacts. Therefore, Green Building concept has gained wide recognition. In line with this, numerous international Green Building rating tools have been developed providing a yardstick for measuring Green Building performance. These rating tools have different credit criteria for evaluating the Green Building performance. According to the existing literature, there are many researches comparing different Green Building rating tools on specific credit criteria such as “Energy”. However, there is a clear lack of research on establishing a baseline to develop new Green Building rating tools and to evaluate existing Green Building rating tools. Therefore, this research aims to establish key credit criteria based on an extensive literature study and evaluate these criteria based on widely used eight Green Building rating tools. The comparison analysis is based on a quantitative measure, namely, a normalised score, which is obtained through allocating credit points of selected Green Building rating tools to the established key credit criteria. The comparison result is presented with radar diagrams and bar charts. This research established seven key credit criteria for these rating tools which are namely (1) Site, (2) Energy, (3) Water, (4) Indoor Environment Quality (IEQ), (5) Material, (6) Waste and pollution, and (7) Management. It is found that ‘Energy’ criterion is the most widely considered key credit criteria and then followed by ‘IEQ’ and ‘Water’ criteria. Apart from that, credit criteria such as ‘Triple bottom line reporting’, ‘Education and awareness’, ‘Economic aspects relating to various costs’, ‘Sustainable designing and planning’ and ‘Stakeholder relations’ are identified as possible credit criteria which can be included in developing the rating tools in future. These key credit criteria can be adopted as a baseline to develop new Green Building rating tools, and it provides fruitful results to develop the existing tools further.
