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Book part
Publication date: 5 June 2023

Mehdi Ebrahimi, David S-K. Ting and Rupp Carriveau

Sustainable development calls for a larger share of intermittent renewable energy. To mitigate this intermittency, Compressed Air Energy Storage (CAES) technology was introduced…

Abstract

Sustainable development calls for a larger share of intermittent renewable energy. To mitigate this intermittency, Compressed Air Energy Storage (CAES) technology was introduced. This technology can be made more sustainable by recovering the heat of the compression phase and reusing it during the discharge phase, resulting in an adiabatic CAES without the need for burning of fossil fuels. The key process parameters of CAES are temperature, pressure ratios, and the mass flow rates of air and thermal fluids. The variation in these parameters during the charge and discharge phases significantly influences the performance of CAES plants. In this chapter, the transient thermodynamic behavior of the system under various operating conditions is analyzed and the impact of heat recovery on the discharge phase energy efficiency, power generation, and CO2 emissions is studied. Simulations are carried out over the air pressure range from 2,500 to 7,000 kPa for a 65 MW system over a five-hour discharge duration. It is also assumed that the heat loss in the air storage and the hot thermal fluid tank is insignificant and standby duration does not impact the status of the system. This result shows that the system exergy and the generated power are more sensitive to pressure change at higher pressures. This work also reveals that every 10°C increase on the temperature of the stored air can lead to a 0.83% improvement in the energy efficiency. The result of the transient thermodynamic model is used to estimate the reduction in CO2 emissions in CAES systems. According to the obtained result, a 65 MW ACAES plant can reduce about 17,794 tons of CO2 emission per year compared to a traditional CAES system with the same capacity.

Book part
Publication date: 17 November 2023

Simon Ofori Ametepey, Clinton Ohis Aigbavboa and Wellington Didibhuku Thwala

It is essential for developed nations to have adequate and functional infrastructure to sustain economic growth and well-being. Despite efforts to reduce the chances of…

Abstract

It is essential for developed nations to have adequate and functional infrastructure to sustain economic growth and well-being. Despite efforts to reduce the chances of infrastructure problems, several scholars have expressed concern about infrastructure standards deteriorating at an alarming rate and the need to ensure their sustainability. To achieve sustainable infrastructure development (SID), Sahely et al. (2005) proposed an uncomplicated strategy based on fundamental cooperation between infrastructure and ecological, economic, and social frameworks. Sustainable infrastructure is defined as the development and dependable management of a safe built environment based on efficient resource utilization and environmental standards. SID aims to mitigate or eliminate ecological problems and challenges while maximizing the potential social and economic benefits. United Nations Economic and Social Commission for Asia and the Pacific (UN-ESCAP, 2007) defines SID as infrastructure compatible with continued financial and environmental sustainability. Sustainable road development infrastructure (SRID) is a procedure for constructing infrastructure that incorporates all the essential sustainable development (SD) parameters and is complicated by the interdependence of multiple factors. Stakeholders are essential for the successful execution of infrastructure projects, and a comprehensive evaluation of stakeholder interests and requirements is necessary to achieve SRID goals while meeting the needs of all parties involved. To achieve SRID, it is necessary to understand the relationship between road infrastructure development (RID) processes and SD standards and to implement criteria and indicators that accurately depict the long-term viability of a development process. Al Sanad (2015) identified several factors that may impede the implementation of SD in the infrastructure sector. Shafii et al. (2006) identified insufficient knowledge of SID, lack of SID training, a perception of SID as expensive, acquisition concerns, administrative issues, expert capacities, and motivational factors for manufacturing local materials as potential obstacles. Serpell (2013) identified four categories of SID challenges, including knowledge, economic and financial, organizational, and go. Darko and Chan (2016) identified the most prevalent barriers as a lack of data, training, research, information, and expertise, high cost, government interest, premium and demand, and the absence of SID standards of practice. Azis et al. (2012) identified improved project efficiency, waste reduction in the construction industry, and energy efficiency as advantages of SID. Ametepey and Aigbavboa (2014) identified energy savings, environmental protection, contribution to a higher standard of living and a healthy work environment, resource preservation for future generations, reduction in lifecycle costs, promotion of sustainable economic development, and stakeholder satisfaction as the top benefits of sustainable construction (SC). Du Plessis (2007) identified technological factors, Al Sanad (2015) identified educational programmes, Serpell et al. (2013) identified transformation, economic, and stakeholder engagement as drivers of SC, and Hankinson and Breytenbach (2012) identified enhanced SC awareness. This chapter reviewed the literature on international infrastructure and sustainability development, discussing factors, and benefits promoting SID.

Details

Sustainable Road Infrastructure Project Implementation in Developing Countries: An Integrated Model
Type: Book
ISBN: 978-1-83753-811-9

Keywords

Book part
Publication date: 9 June 2023

Michelle Attard Tonna, Christine Helen Arnold, Marie-Christine Deyrich, Karen Marangio, Shraddha Kunwar and Tara Ratnam

The disruption caused by the Covid-19 pandemic necessitated a move from face-to-face teaching to fully online teaching, creating new challenges and opportunities for educators. In…

Abstract

The disruption caused by the Covid-19 pandemic necessitated a move from face-to-face teaching to fully online teaching, creating new challenges and opportunities for educators. In this chapter we explore how instructors' practices were affected by this emergency situation and the nature of changes in their conception of teaching/learning and their roles as teacher educators. Data from interviews and narratives contributed by a large number of educators spanning a variety of educational and geographical contexts have been analyzed using Lewin's three-stage model of change. This is cross-referenced against a theoretical framework informed by a sociocultural view of teaching and learning to examine the transformative nature of teaching and learning promoted by pandemic pedagogical practices. The findings show that educators' practices have necessarily had to evolve or even change significantly in order to fit the new online instructional mode. However, it is not possible to establish that these were largely transformative in nature beyond serving the existing institutional outcome needs more or less efficiently. This implies that further investment is needed in teacher education to facilitate remote teaching, redesign teaching, and reconsider technology in new ways which go beyond it being a simple tool for the transmission of knowledge. Equally important would be to support educators to put ‘Maslow before Bloom,’ meaning that safety and well-being must be given priority over teaching and learning as the mental, emotional, and physical challenges experienced during the pandemic will continue to linger post pandemic.

Details

Teacher Education in the Wake of Covid-19
Type: Book
ISBN: 978-1-80455-462-3

Keywords

Article
Publication date: 7 November 2023

John McEwan McManus, Styliani Gkika and Elaine Swift

Hearing voices can be a debilitating and traumatic experience, and psychiatric hospitals can feel unsafe and overstimulating to voice hearers. Research suggests this may prolong a…

Abstract

Purpose

Hearing voices can be a debilitating and traumatic experience, and psychiatric hospitals can feel unsafe and overstimulating to voice hearers. Research suggests this may prolong a service user’s admission time and lead to an unhelpful experience. Therefore, a hearing voices group (HVG) was developed to create a safe space where voice hearers could share their story with others with lived experience and access support.

Design/methodology/approach

The group was developed by the first author under the supervision of the inpatient psychology lead. Both a practice-based and expert by experience-based approach were considered during the development of the group structure. The group also aligned with the Hearing Voices Network and the Trust’s values. A questionnaire was developed to evaluate the effectiveness of the group using six five-point Likert scale questions and three open questions to collect the data, which was then analysed.

Findings

The themes from the qualitative data showed that staff and ward-based promotion of the group were paramount to ensuring patient engagement. The results also showed that voice hearers found the group therapeutic, and some found the coping skills shared to be beneficial and effective.

Research limitations/implications

A large percentage of women (76%) reported that they had attended a HVG before. This was not the case for service users from the male unit and psychiatric intensive care unit. This result is considered to reflect the fact that women in that unit had the opportunity to attend more than once during their admission, rather than that they had accessed these groups in other settings or in the community. Therefore, in the future, it would be useful to change this question to “have you attended any other HVGs in the past, prior to this admission?”, which might be more appropriate for data collection.

Originality/value

To the best of the authors’ knowledge, this is the original work of the first author, who is an expert by experience and an assistant psychologist. The results suggest that HVGs can be beneficial for patients in acute and intensive mental health care and highlight some necessary adaptations and the importance of adopting an MDT approach in promoting therapeutic groups.

Details

Mental Health and Social Inclusion, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2042-8308

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Article
Publication date: 13 December 2022

Ram Asra Khural, Shashi, Myriam Ertz and Roberto Cerchione

This study explores the relationships among sustainability implementation barriers (resource, managerial and regulatory barriers), sustainability practices (sustainable…

Abstract

Purpose

This study explores the relationships among sustainability implementation barriers (resource, managerial and regulatory barriers), sustainability practices (sustainable construction materials, sustainable construction design, modern construction methods and environmental provisions and reporting) and sustainability performance (environmental, economic and social) in hill road construction (HRC).

Design/methodology/approach

Primary data were collected from the 313 HRC practitioners with the help of a questionnaire, and research hypotheses were tested employing structural equation modeling.

Findings

The findings reveal a mixed effect of sustainability implementation barriers. Resource (managerial) barriers are negatively related to all practices except environmental provisions and reporting (sustainable construction materials), while regulatory barriers only negatively impact modern construction methods. On the other hand, all sustainability practices positively impact environmental performance, whereas economic (social) performance is positively influenced by all practices, except environmental provisions and reporting (modern construction methods), and positively affects economic performance.

Originality/value

In order to transform HRC toward sustainability, the barriers to sustainability implementation, sustainability practices and performance need to be understood by practitioners; however, the relationships have not previously been empirically assessed in extant literature. Besides, past research appears to be predominantly focused on the environmental aspect, thereby neglecting economic and social aspects. This study is a modest attempt to bridge these research gaps.

Details

Engineering, Construction and Architectural Management, vol. 31 no. 4
Type: Research Article
ISSN: 0969-9988

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Article
Publication date: 4 March 2024

Hemanth Kumar N. and S.P. Sreenivas Padala

The construction industry is tasked with creating sustainable, efficient and cost-effective buildings. This study aims to develop a building information modeling (BIM)-based…

Abstract

Purpose

The construction industry is tasked with creating sustainable, efficient and cost-effective buildings. This study aims to develop a building information modeling (BIM)-based multiobjective optimization (MOO) model integrating the nondominated sorting genetic algorithm III (NSGA-III) to enhance sustainability. The goal is to reduce embodied energy and cost in the design process.

Design/methodology/approach

Through a case study research method, this study uses BIM, NSGA-III and real-world data in five phases: literature review, identification of factors, BIM model development, MOO model creation and validation in the architecture, engineering and construction sectors.

Findings

The innovative BIM-based MOO model optimizes embodied energy and cost to achieve sustainable construction. A commercial building case study validation showed a reduction of 30% in embodied energy and 21% in cost. This study validates the model’s effectiveness in integrating sustainability goals, enhancing decision-making, collaboration, efficiency and providing superior assessment.

Practical implications

This model delivers a unified approach to sustainable design, cutting carbon footprint and strengthening the industry’s ability to attain sustainable solutions. It holds potential for broader application and future integration of social and economic factors.

Originality/value

The research presents a novel BIM-based MOO model, uniquely focusing on sustainable construction with embodied energy and cost considerations. This holistic and innovative framework extends existing methodologies applicable to various buildings and paves the way for additional research in this area.

Article
Publication date: 16 August 2022

Jin Cai, Zhongfu Li, Yudan Dou, Yue Teng and Mengqi Yuan

Contractor selection is critical in green buildings (GBs) since the preferred contractor has the responsibility to achieve construction sustainability as well as relationship…

Abstract

Purpose

Contractor selection is critical in green buildings (GBs) since the preferred contractor has the responsibility to achieve construction sustainability as well as relationship sustainability. The developer satisfaction reflecting requirements can boost the cooperative relationship among stakeholders and act as an evaluation scale for the success of GB projects, which needs to be emphasized in the selection process but little involved in the existing research. This study explores improving GB contractor (GBC) selection by integrating developer satisfaction into selection procedures.

Design/methodology/approach

A systematic framework of GBC selection including twenty-five criteria from literature review and experts survey is firstly constructed. Both tactical and strategic criteria are further classified into Kano categories (must-be, one-dimensional, and attractive categories) using the fuzzy Kano model (FKM), and weighted by the developer satisfaction index. The model proposed by this study combining FKM and TOPSIS divides the selection process into the filtration phase and selection phase by Kano categories. The proposed model is finally verified through performance comparison among multiple methods in a case.

Findings

Selection criteria are measured linearly and nonlinearly, showing criteria having nonlinear satisfaction change accounts for two-thirds of all. Criteria at tactical level tend to be must-be or one-dimensional categories for the developer, and most strategic criteria are classed as the attractive category, indicating that adding strategic criteria is necessary for long-term cooperation. The proposed model, using developer satisfaction to improve the selection process, ensures the selected GBC to be the most satisfactory with requirements of the developer and makes the performance of GBCs easily distinguishable.

Originality/value

This study contributes to the existing body of knowledge for promoting relationship sustainability by supplementing an integrated model with emphasis on developer satisfaction in GBC selection, so as to establish a good initial foundation due to the match between performances of GBCs and needs of developers. It not only helps maximize developer satisfaction in GBC selection by applying satisfaction to pre-construction management, but also instructs GBCs to prioritize performance improvements. The framework is also conducive for developers to classify selection criteria and select other participants (like green suppliers) from the satisfaction perspective in GBs.

Details

Engineering, Construction and Architectural Management, vol. 30 no. 10
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 30 November 2022

Omer Faruk Aladag and Mehmet Ali Koseoglu

This study aims to explore the intellectual connections of mission statement research to identify the influential domains of source knowledge and emergent areas of research for…

Abstract

Purpose

This study aims to explore the intellectual connections of mission statement research to identify the influential domains of source knowledge and emergent areas of research for future studies.

Design/methodology/approach

The authors deployed bibliometric methods, namely, citation, co-citation and network analysis. The authors collected data from the Scopus and Web of Science databases and analyzed the connections of the most influential articles.

Findings

The authors identified four knowledge domains that informed the mission statements literature: guidance on mission statement development, the value of mission statements, mission statements and organizational issues, mission statement content and communication. And the authors spotted four opportunities for knowledge advancement based on theoretical frameworks, performance measures, content and context.

Practical implications

Practitioners should think beyond the immediate benefits of mission statements, such as performance and legitimacy improvement. Instead, they should focus on long-term benefits, information advantages and democratizing the development phase of mission statements.

Originality/value

Mission statements have attracted scholarly attention over the past 40 years. Despite the formation of a considerable body of knowledge, intellectual connections of mission statement research have been largely neglected. Previous studies had a narrow focus or insufficient coverage of the literature. To the best of the authors’ knowledge, this is the first full-scale bibliometric study on the intellectual connections of the mission statements literature.

Details

Nankai Business Review International, vol. 15 no. 1
Type: Research Article
ISSN: 2040-8749

Keywords

Article
Publication date: 26 September 2023

Peng Liu, Xiao Fei Chen, Ya Xi Cheng and Shan Shan Xiao

Teacher well-being has been a concern, but there has been a lack of research on how teacher leadership can contribute to teacher well-being in a high-accountability context and a…

Abstract

Purpose

Teacher well-being has been a concern, but there has been a lack of research on how teacher leadership can contribute to teacher well-being in a high-accountability context and a hierarchical education system such as that of China, particularly through the meditating roles of trust in the leader and teacher efficacy. Therefore, the purpose of this study was to understand the relationship between teacher leadership and teacher well-being while exploring the mediating roles of trust in leaders and teacher efficacy in this relationship.

Design/methodology/approach

Using structural equation modeling (SEM) and bootstrap methods with valid answers from 1,144 teachers in 25 primary schools in 1 Chinese city, this study mainly answered three questions: Is there a significant relationship between teacher leadership and teacher well-being? Is there a significant mediating effect of trust in leaders on the relationship between teacher leadership and teacher well-being? Is there a significant mediating effect of teacher efficacy on the relationship between teacher leadership and teacher well-being?

Findings

This study reported a positive relationship between teacher leadership and teacher well-being. This study also found positive mediating roles for trust in leaders and teacher efficacy in the relationship between teacher leadership and teacher well-being in a high-accountability and hierarchical system like that of China.

Originality/value

This study provides an understanding of the transferability of teacher leadership theories across cultures and has practical significance for educational practice in high-accountability and hierarchical education contexts similar to that of China.

Details

Journal of Educational Administration, vol. 61 no. 6
Type: Research Article
ISSN: 0957-8234

Keywords

Article
Publication date: 8 January 2024

Tirivavi Moyo, Mazen Omer and Benviolent Chigara

Sustainable construction deficits are common in developing economies, and resolutions are constrained by the failure to prioritise the plethora of available indicators. This study…

Abstract

Purpose

Sustainable construction deficits are common in developing economies, and resolutions are constrained by the failure to prioritise the plethora of available indicators. This study aims to report on overlapping indicators for benchmarking sustainable construction for construction organisations.

Design/methodology/approach

Online survey data were collected from construction professionals, academics and senior managers in government bodies. Pearson chi-squared tests and overlapping analysis were used to determine significant indicators. Kruskal–Wallis tests were used to determine statistically significant differences among the dimensions.

Findings

Overlapping analysis determined indicators significant for economic, environmental and social performance. Environmental protection and reporting (pollution and emissions) were significant for all three performance dimensions. The most significant indicators are economic performance (adequate competence of key project staff), environmental performance (environmental protection and reporting – pollution and emissions) and social performance (adequate sustainability expenditure by construction organisations). Significant differences due to dimensions existed for adequate competence of key project staff, sustainable construction and eco-design, adequate governance and organisational excellence of construction projects and satisfactory workers’ morale.

Research limitations/implications

Determining overlapping indicators enables prioritised implementation that ensures sustainable construction. Excluding construction workers was a significant limitation for a holistic interrogation.

Originality/value

To the best of the authors’ knowledge, this is the first study to determine overlapping indicators for sustainable construction performance in Zimbabwe.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

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