Search results

This study has assessed the thermal performance of locally fabricated bio-based building envelopes made of coconut and corn husk composite bricks to reduce building wall heat transmission load and energy consumption towards green building adaptation.

Samples of coconut fiber (coir) and corn husk fiber bricks were fabricated and tested for their thermophysical properties using the Transient Plane Source (TPS) 2500s instrument. A simulation was conducted using Dynamic Energy Response of Building - Lunds Tekniska Hogskola (DEROB-LTH) to determine indoor temperature variation over 24 h. The time lag and decrement factor, two important parameters in evaluating building envelopes, were also determined.

The time lag of the bio-based composite building envelope was found to be in the range of 4.2–4.6 h for 100 mm thickness block and 10.64–11.5 h for 200 mm thickness block. The decrement factor was also determined to be in the range of 0.87–0.88. The bio-based composite building envelopes were able to maintain the indoor temperature of the model from 25.4 to 27.4 °C, providing a closely stable indoor thermal comfort despite varying outdoor temperatures. The temperature variation in 24 h, was very stable for about 8 h before a degree increment, providing a comfortable indoor temperature for occupants and the need not to rely on air conditions and other mechanical forms of cooling. Potential energy savings also peaked at 529.14 kWh per year.

The findings of this study present opportunities to building developers and engineers in terms of selecting vernacular materials for building envelopes towards green building adaptation, energy savings, reduced construction costs and job creation.

This study presents for the first time, time lag and decrement factor for bio-based composite building envelopes for green building adaptation in hot climates, as found in Ghana.

This study aims to explore how the attitudes, motivations and practices of informal entrepreneurs, who choose service exclusion, prevent them from recognizing and taking advantage of transformative opportunities and embracing change.

The authors conducted a two-year study to explore five types of informal entrepreneurs (musicians, street vendors, artists, owners of informal smoke shops and street food vendors). The authors used semi-structured interviews and applied thematic analysis (ATA) of popular music and narratives to shed light on their attitudes, motivations and practices.

The study shows how potential service participants freely exclude themselves from services and transformative service initiatives, preventing them from realizing opportunities and embracing change that can improve their well-being. The study also demonstrates that to serve human needs fairly, service designers need to recognize that some actors require more attention and resources than others to achieve their potential.

The study challenges the notion that any population experiencing vulnerability wants help and chooses to participate in transformative service initiatives. Service participants can, in fact, exclude themselves from services and transformative service initiatives by free will, demonstrating that service exclusion is a multidirectional phenomenon, not unidirectional. Additionally, the paper analyzes narratives gathered from aesthetic expressions, using principles of ATA, introducing music thematic analysis as a research approach.

The construction industry presents a particularly notable and demanding setting where sexual harassment demands special consideration. With its largely male-dominated workforce, intense work settings and entrenched workplace norms, the construction sector provides a unique backdrop in which the complexities of sexual harassment manifest. The purpose of this study is to investigate the relationship between sexual harassment and employee performance in the construction industry, with a particular focus on examining the mediating roles of psychological distress and employee engagement.

A cross-sectional survey design was utilized to collect data from 188 construction industry professionals. Participants completed validated questionnaires assessing their experiences with sexual harassment, levels of psychological distress, employee engagement and self-reported performance indicators. Partial least square-structural equation modeling (PLS-SEM) was conducted to examine the direct and mediated effects of sexual harassment on employee performance through psychological distress and employee engagement.

The findings reveal a lack of statistical significance in the negative relationship between sexual harassment and employee performance within the construction sector. Furthermore, there was a significant negative relationship between sexual harassment and employee engagement. Employee engagement emerged as a full mediator, buffering the negative effects of harassment on performance and suggesting that engaged employees may be better equipped to cope with and mitigate the impact of harassment.

The study’s findings contribute to understanding workplace dynamics amidst sexual harassment in construction. Work engagement fully mediates the relationship, highlighting the need to prioritize initiatives aimed at enhancing employee engagement, such as promoting a supportive and fostering open communication channels between management and employees, can mitigate the occurrence and negative impacts of sexual harassment on employee performance. Continuous monitoring of engagement levels is crucial for sustaining positive work environments.

This study contributes to the existing literature by providing quantitative evidence of the relationship between sexual harassment and employee performance in the construction industry. By examining the mediating roles of psychological distress and employee engagement, the research offers a deeper understanding of the mechanisms underlying this relationship. The findings underscore the importance of addressing sexual harassment and promoting employee well-being to foster a safe and productive work environment in the construction industry.

Available studies on parent-child communication about sexual and reproductive health in Ghana have largely focused on assessing communication frequency, barriers, and who communicates with whom within the family. The purpose of this paper is to examine parental and family contextual factors that predict parental communication with young people about sexual and reproductive health.

A cross-sectional interviewer-administered survey was conducted among 790 parents selected through a multistage sampling technique. The Cronbach’s α statistic was used to assess various parental and family contextual constructs on parent-child communication about sexual and reproductive health. Separate hierarchical multiple regression models for mothers and fathers were constructed to assess predictors of parental communication about sexual and reproductive health.

Nearly the same factors predicted mothers’ and fathers’ communication with young people about sexual and reproductive health matters. The predictors for both mothers and fathers included high socioeconomic status (SES), family religiousity, parent discipline, perceived parent sexual knowledge and parent trustworthiness. Parent permissiveness predicted only for fathers.

Parental communication on sexual and reproductive health is influenced by high SES, family religiousity, parent sexual knowledge, parent discipline and trustworthiness. Interventional programmes on communication about sexual and reproductive health need to take cognisance of these factors to improve parent-child communication about sexual and reproductive health.

This paper adds to the limited evidence on parent-child communication about sexual and reproductive health in Ghana, by examining parental and family contextual factors that influence parental communication with young people about sexual and reproductive health.

The purpose of this paper is to examine the influence of urban homeowners’ green perceived values (i.e. green functional, emotional, ecological and aesthetic values) on their greening behavioural intention. The study further tested the mediating role of green attitude in the relationship between the green perceived value dimensions and greening intention through the theoretical lens of the customer value theory (CVT) and the theory of planned behaviour (TPB).

A quantitative survey design was employed for this study. Empirical data were drawn from 501 households in Ghana using a purposive sampling technique. The hypothesized relationships were analysed using structural equation modelling.

The results of this study revealed that urban homeowners’ intention to adopt greening behaviour is directly influenced by their perception of green functional, ecological and aesthetic values. In addition, the study found that green attitude partially mediated the links between homeowners’ green functional, ecological and aesthetic values and their greening intention. Green emotional value on the other hand did not have a significant direct effect on homeowners’ greening intention. However, it had an indirect effect on greening intention through green attitude. Thus, we can conclude that green attitude fully mediated urban homeowners’ perception of green emotional value and their greening intention.

To the best of the authors’ knowledge, this study is among the first to attempt to integrate the CVT and the TPB to understand urban homeowners’ greening intention. The study which focuses on Ghana provides new insights into the pathway for promoting voluntary greening behaviour within a developing country

Lean construction (LC) is an innovative approach in the construction industry that has shown significant success in developed countries. Although LC has potential in the construction sector of Pakistan, it has not been extensively explored. This study aims to address this knowledge gap by identifying and predicting current lean practices and assessing the strengths and weaknesses of LC implementation in Pakistan.

Using robust statistical methods to analyze 92 valid responses, the study reveals that approximately 54% of lean practices are currently in use in the construction industry of Pakistan, with a population mean ranging from 52.7% to 55.6%.

Surprisingly, the research identifies instances where some construction firms in Pakistan are implementing LC practices, even though they have only a limited understanding of its underlying principles. Notably, certain subprinciples, such as visual management, top management commitment to change, employee training, process cycle time reduction and production optimization, are less integrated within the construction industry. Exploring the possibility of implementing LC, recommendations for strategies to implement LC in Pakistan are suggested, aligning with the conceptual model proposed by the researchers.

The novelty of this work offers insights that can serve as a comprehensive guide for developing nations. It provides a structured approach to assess and benchmark LC practices, which, in turn, can contribute to a more efficient and effective construction industry. Moreover, the strategies proposed in this research can aid developing countries in the efficient implementation of LC. This will have a positive implication for both economic and developmental outcomes.

This study aims to assess the nexus between perceived overqualification (POQ), anger, knowledge hiding, cyberloafing and harmonious passion (HP).

The authors obtained 264 responses from two public traded firms in Pakistan using a supervisor-subordinated nested design and a multi-time data collecting strategy using convenience sampling.

The study results indicate that POQ positively affects knowledge hiding and cyberloafing. The authors also found anger as a potential mediator in the direct association between POQ and cyberloafing. In addition, the findings suggest that the association between POQ, knowledge hiding and cyberloafing will be weak when individuals exhibit HP towards their job roles. The results of this research, when considered as a whole, provided support for all of the hypothesised direct and indirect linkages, which has important ramifications for both theory and practise.

This study has both theoretical and practical implications. Grounded on equity theory and relative deprivation theory, this paper asserts that HP should be used to decrease POQ affect. According to the authors, pro-environment employee actions may help build a pro-environment workplace culture as well as a pro-environment sense of responsibility, both of which can help to achieve significant pro-environment results.

This study builds on and fills in the gaps left by earlier research to better aid organisational researchers, practitioners and stakeholders in understanding how POQ, rage, information concealing, cyberloafing and harmonic passion interact with one another.