Search results

The purpose of this study is to examine the energy savings in the indoor environment, using strategies that adopt the characteristics of nature, called biomimetic solutions. This research designed a biomimetic window system to bring daylight into interior spaces in educational buildings where daylight cannot be reached. Specifically, this study assessed how the daylight that was achieved via a biomimetic window system would affect energy savings using an energy simulation method.

This study explored how biomimetic methods would affect the building environment and which biomimetic method would involve the building's energy saving with daylight. The research intended to develop a novel biomimetic window system that can bring daylight to the basement floor of an existing building on a university campus to find out how much the biomimetic window system would affect the energy savings of the building. Referring to the existing building's layout and structure, energy simulation models were developed, and the energy consumptions were estimated.

Simulation models proved that the biomimetic window system has sufficient performance to bring more daylight to the basement floor of the building. Furthermore, it was confirmed that the use of the biomimetic window system for the building could reduce energy usage compared to the actual energy usage of the current building without biomimetic windows.

First, this study was adopted as a computer-designed simulation method instead of using a real-world system. Although this study designed the biomimetic window system based on previous studies, it should be considered the possibility of other problems when the system is actually built in. Second, it is necessary to predict how much an initial budget is required when the system is built. It means that this study did not calculate the lifecycle cost of the biomimetic window system. It will also be necessary to compare energy consumption to the required initial budget. Lastly, this study was simulated based on weather data in cold regions, and it did not compare/analyze different climate regions. Different results may be predicted if the biomimetic window system is built in different climatic regions.

This research showed new practical ways to capture and transmit solar heat and light using a biomimetic solution. Furthermore, using the proposed novel biomimetic window system, the amount of energy reduction can be calculated, and this method could be applied in the interior non-window spaces of academic and related types of buildings.

As green buildings have become more widely accepted, constructors (general contractors, construction managers and subcontractors) have become more involved and are playing an increasing role in the success of these projects. As a result, constructors need and want a better understanding of their roles and responsibilities in Leadership in Energy and Environmental Design (LEED) projects, while exploring ways to provide a “value‐added” service to the projects. Past research has identified “Innovation in Design (ID)” credits as a potential “value‐added opportunity” for constructors to become preferred members of LEED project teams. Similar opportunities may also exist on Building Research Establishment Environmental Assessment Method (BREEAM) project teams. This paper seeks to address these issues.

The methodology encompassed an overview of “Innovation Credits (IC)” in LEED‐NC, BREEAM green building guidelines and an analysis of the ID category in LEED‐NC from a constructor's viewpoint in general, and electrical contractors in particular.

The findings of this research have identified ID credits as a potential “value‐added opportunity” for constructors to become preferred members of the LEED project teams. In contrast to LEED, this research has identified that similar opportunities for constructors do not exist for ICs under BREEAM as past or current ICs are not available in the public domain unless accessed by a BREEAM Assessor or Approved Person. This lack of access to information could have a negative impact and stifle future innovations and is an area worthy of further research.

This research provides an understanding of the constructor's role in the ID category and contributes to the broader literature related to the role of the construction industry in the green building movement. It is envisioned that the research output will serve as easy to use reference resources for the electrical contracting industry for proposing and achieving ID credits on LEED projects. It is also envisaged that this research will lead to recognition of the need for BREEAM ICs to be accessed within the public domain.

The purpose of this paper is to identify the characteristics of green building guidelines in developed countries and to analyze their influence on the evolution and adoption of similar guidelines in India.

This research reviews the green building guidelines in the developed as well as the developing countries such as Leadership in Energy and Environmental Design guidelines for new construction (LEED^® NC‐USA), Building Research Establishment Environmental Assessment Method (BREEAM)‐UK, Comprehensive Assessment System for Building Environmental Efficiency (CASBEE)‐Japan, and LEED^®‐India and further performs a comparative analysis of these guidelines.

Based on the comparative analysis of LEED^® NC‐USA, BREEAM‐UK, and CASBEE‐Japan, the characteristics that might have affected their current acceptance were identified. The catalysts and hindrances associated with the acceptance of LEED‐India in India were identified based on the comparative analysis of LEED^® NC‐USA and LEED^®‐India.

With an exponential growth of construction industry in the rapidly developing countries, there is a definite need to promote the adoption of green building guidelines. The methodology adopted in this research can be applied to understand the evolution as well as future adoption of green building guidelines in other countries that are facing similar circumstances.

The purpose of this paper is to develop a knowledge elicitation strategy to elicit and compile home energy retrofit knowledge that can be incorporated into the development of an intelligent decision support system to help increase the uptake of home energy retrofits. Major problems accounting for low adoption rates despite well-established benefits are: lack of information or information in unsuitable and usable format for decision making by homeowners. Despite the important role of expert knowledge in developing such systems, its elicitation has been fraught with challenges.

Using extensive literature review and a Delphi-dominated data collection technique, the relevant knowledge of 19 industry experts, selected based on previously developed determinants of expert knowledge and suitable for decision making was elicited and compiled. Boolean logic was used to model and represent such knowledge for use as an intelligent decision support system.

A combination of comprehensive knowledge elicitor training, Delphi technique, semi-structured interview, and job shadowing is a good elicitation strategy. It encourages experts to describe their knowledge in a natural way, relate to specific problems, and reduces bias. Relevant and consensus-based expert knowledge can be incorporated into the development of an intelligent decision support system.

The consensus-based and relevant expert knowledge can assist homeowners with decision making and industry practitioners and academia with corroboration and enhancement of existing knowledge. The strategy contributes to solving the knowledge elicitation challenge.

No previous study regarding a knowledge elicitation strategy for developing an intelligent decision support system for the energy retrofit industry exists.

The purpose of this paper is to analyze the current customer relationship management (CRM) with regard to manufacturers and retailers in the US manufactured housing (MH) industry and to present an MH industry‐specific framework of CRM system.

An overall CRM system was investigated through a questionnaire survey and interviews with industry experts. Based on the analysis of current CRM and the specific data collected, a framework of manufacturer‐retailer relationship optimization model (MRROM) for the MH industry was developed and validated trough the MH industry practitioners.

MRROM describes the overall framework of an industry‐specific CRM solution for the MH industry and suggests a new paradigm for the MH customization process as a focus area.

This research only focused on the framework of optimal CRM system at the macro levels and an optimization model in the critically constrained manufacturer‐retailer relationship areas.

The proposed framework of MRROM can be used for developing the CRM vision and CRM strategies for the MH industry. It can then be the basis of an assessment of the current and required CRM capabilities of the enterprise.

Supply chain management for the MH industry is a new area of research. The proposed MRROM will contribute to improving the effectiveness and long‐term success of the supply chain in the MH industry. In addition, the proposed MRROM can be applied to other industries in the similar circumstances as well and is expected to facilitate the overall sales process.

The purpose of this paper is to comprehend the ways of knowledge and application of green building guidelines and assessment systems as innovations diffuse in developing countries’ Architecture Engineering and Construction (AEC) industries.

Building up on recent research on the India case, this study focused on Indonesia and Turkey and further studied “how green building assessment systems diffuse in developing countries”. A total of 110 experts representing individuals from private and governmental sectors from both countries responded to the conducted survey.

Findings show insights to adoption of green building guidelines in developing countries, including their diffusion paths, barriers to their use and their applications. Additionally, the results are compared with the India case from the recent literature and analysed via the lens of the diffusion of innovation theory.

A random sampling of the AEC industries in developing countries in future studies and capturing of the evolution of the trends over time will provide further insights into the diffusion of innovation phenomena in the context of green building guidelines.

Innovation adoption paths for green building guidelines in Indonesia, Turkey and India are similar, while a higher adoption rate is observed in the case of India. “Diffusion of innovation” categories for green building guidelines that define the state of each adopter at the time of survey conduct in India, Indonesia and Turkey are found. Environmental groups as innovator, large business houses as early adopter and nodal agencies as early majority are the common adopters and categories of green building guidelines. The study findings align with those in the literature and show that clients and market conditions can catalyse the diffusion of innovation in AEC industries in Turkey and Indonesia.

Diffusion of green building guidelines as innovations in developing countries’ AEC industries showed alignment with the Roger’s (2003) model. However, respondents in both Turkey and Indonesia reported approximately ten times as many innovators and twice as many early adopters as Roger’s (2003) model would predict. Because of the small proportions of late adopters and laggards in these two countries, any useful innovation should be quickly incorporated.

Aligning with the literature, findings show that clients and market conditions catalyse diffusion of innovation in AEC industries in Turkey and Indonesia. It is important to note that both countries approximately have ten times as many innovators and twice as many early adopters as theory would predict. Because of the small proportions of late adopters and laggards in these two countries, useful green building innovations could be quickly incorporated.

The paper aims to introduce a reliable and valid green Leadership in Energy and Environmental Design (LEED) servicescape measure (i.e. one that utilises extraordinary leadership in energy and environmental design supporting green building design, construction, and operations) that examines the direct effects of the physical environment on consumers' evaluation of a service encounter. In addition, the mediating effects of service quality perception, customer satisfaction, and consumers' attitude toward a service provider are considered.

The study is based on a sample of 522 Brazilian respondents' evaluation of their experience with the green LEED servicescape. A comprehensive research model and its moderating effects are investigated using LISREL model. The LISREL model consists of two parts: the measurement model and the structural equation model. The measurement model specifies how latent variables or hypothetical constructs depend upon or are indicated by observed variables. It describes the measurement properties (reliabilities and validities) of the observed variables. The structural equation model specifies the causal relationships among the latent variables, describes the causal effects, and assigns the explained and unexplained variance. The LISREL method estimates the unknown coefficients of a set of linear structural equations. It is particularly designed to accommodate models that include latent variables, measurement errors, namely reciprocal causation, simultaneity, and interdependence in both dependent and independent variables.

Overall, the study provided significant support (p≤0.05) for seven of eight hypotheses with the eighth marginally supported by the data. Specifically, the results suggest that consumers' perceptions of the green servicescape have a direct effect on their service quality perceptions and on their overall satisfaction with the environment. Findings also suggest that a consumer's perception of service quality has a direct effect on their level of satisfaction with the service environment, and satisfaction along with service quality has a direct effect on a consumer's attitude‐towards‐a green service provider. The consumers' attitude‐towards‐a green service provider influences their purchase intentions.

A reliable and valid green LEED servicescape measurement scale is introduced to the literature.

The purpose of this paper is to explore the adoption process of high performance building technologies, including alternative wall systems, in hot‐humid climates. Challenges faced by homebuilders adopting high performance building technologies, and resulting energy performance are discussed.

The paper is a case study of four homebuilders using high performance building technologies, including advanced framing, panelised and modular. For each homebuilder, a baseline and a demonstration house were evaluated for energy performance and technology adoption. Homebuilders were interviewed to identify implementation challenges and barriers faced during the construction process.

The advanced framing, modular and panelised houses used 50 percent, 42 percent, and 35 percent less energy when compared to the traditional stick‐built. Further, the modular appeared to have the greatest opportunity to boost performance for least cost. Participating builders identified cost as the top constraint to a wide adoption of high performance criteria, followed by a slow learning curve and the lack of proper marketing channels to transition from construction to sale.

Several limitations of the research restrict generalisation of findings: results are based on a small sample of homebuilders; and results reflect energy performance in a hot and humid climate. It is likely that relative energy usage will change as the size, scope, and design complexity of the common element changes.

Findings from this study will contribute to a better understanding of the usability of high performance technologies and ease the transition towards implementing high performance criteria into every builder company's culture.