Importance-performance analysis (IPA) of the indoor environmental quality (IEQ) of an EDGE-certified building in Ghana

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Kofi Agyekum ◽  
Elorm Emil Koku Akli-Nartey ◽  
Augustine Senanu Kukah ◽  
Amma Kyewaa Agyekum
Keyword(s):  
Performance Analysis ◽  
Environmental Quality ◽  
Gap Analysis ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Content Type ◽  
Artificial Lighting ◽  
Survey Results ◽  
Space Layout ◽  
Visual Privacy

PurposeThe excellence in design and greater efficiencies (EDGE) certification system has seen a gradual adoption worldwide, with Ghana having six out of its eight certified green buildings bearing an EDGE certification. However, little is known about occupants’ satisfaction with the indoor environmental quality (IEQ) of EDGE-certified buildings. Therefore, the purpose of this study is to examine the satisfaction of occupants with the IEQ of an EDGE-certified building in Ghana by identifying their perceived performance of the indoor environment relative to their perceived importance.Design/methodology/approachA survey was conducted to evaluate the performance of 12 IEQ parameters with the occupants of an EDGE-certified office building. The survey results were evaluated using a gap analysis and both traditional and alternative Importance-Performance Analysis (IPA) matrices.FindingsThe findings revealed that noise level, temperature, cleanliness, sound privacy, air quality and humidity were IEQs that required the highest priority for improvement. Daylight and artificial lighting showed no appreciable performance gap. Space layout was adequately satisfied, whereas space size was overly satisfied. Visual privacy and outdoor view were found to require low priority of improvement.Originality/valueThis study contributes to the state-of-the-art of the IEQ of green buildings. It pioneers the research that seeks to examine the IEQ of EDGE-certified buildings. The gap analysis and the IPA were effective in prioritizing the IEQs for improvement action and provided a practical research framework that helped researchers examine the performance of green buildings, thereby giving valuable feedback to policymakers and building owners.

Indoor environmental quality and occupants’ productivity

2016 ◽  
Vol 6 (5) ◽  
pp. 462-477
Author(s):  
Harshini Mallawaarachchi ◽  
Lalith De Silva ◽  
Raufdeen Rameezdeen
Keyword(s):  
Statistical Analysis ◽  
Environmental Quality ◽  
Focal Point ◽  
Green Buildings ◽  
Primary Data ◽  
System Control ◽  
Indoor Environmental Quality ◽  
Structured Interviews ◽  
Content Type ◽  
Green Certification

Purpose The purpose of this paper is to determine the relationship between indoor environmental quality (IEQ) and occupants’ productivity improvements in green buildings in order to propose probable enhancements of national green certification criteria. Design/methodology/approach Survey approach was selected under quantitative phenomenon. Hence, questionnaire survey was selected as a primary data collection technique. It was linked to semi-structured interviews to validate survey results. The survey data were analysed by using nonparametric statistical analysis techniques, such as significance testing and Spearman’s correlation. Statistical Package for the Social Science (SPSS) v.20 statistical analysis software was used in data analysis. Findings Seven factors were identified as significant factors which showed statistically significant monotonic correlation to major IEQ dimensions. Among those, air quality and acoustical partitioning factors confirmed a statistically significant weak positive monotonic correlation, whilst system control showed strongly positive monotonic correlation to occupants’ productivity in green buildings. Practical implications The findings can be practically implied as a basis to review the existing evaluation criteria of IEQ in national green certification system to propose probable enhancements. Originality/value The significant IEQ factors influencing occupants’ productivity were determined as the focal point of this research. Accordingly, new provisions were proposed to enhance the national green certification criteria.

scholarly journals Green Building Occupant Satisfaction: Evidence from the Australian Higher Education Sector

2018 ◽  
Vol 10 (8) ◽  
pp. 2890 ◽  
Author(s):  
Maryam Khoshbakht ◽  
Zhonghua Gou ◽  
Xiaohuan Xie ◽  
Baojie He ◽  
Amos Darko
Keyword(s):  
Environmental Control ◽  
Green Building ◽  
Building Design ◽  
Green Buildings ◽  
Facilities Management ◽  
Subtropical Climate ◽  
Indoor Environmental Quality ◽  
Artificial Lighting ◽  
The Individual ◽  
Occupant Satisfaction

Universities spend billions of dollars on green buildings as a sustainability commitment. This research investigates occupant satisfaction with indoor environmental quality (IEQ), building design (BD), and facilities management (FM) in five highly ranked green higher educational buildings in the subtropical climate of Australia, in comparison to nine non-green counterparts. The results disclose that the green building users were more consistently satisfied than the non-green building users with BD&FM elements, such as design, needs from facilities, building image, cleaning, the availability of meeting rooms, and storage. On the other hand, the study revealed weaknesses of green buildings in IEQ, such as noise, ventilation, and artificial lighting. The individual environmental control positively correlated with satisfaction in non-green buildings, but did not significantly affect satisfaction in green buildings. This study also identified the influences of non-environmental factors on occupant satisfaction, such as gender, age, sitting close to a window, hours spent in the building and in the workstation, and the number of people sharing office space. The research provides evidence and guidance for investing in, designing, and managing green educational facilities.

Evaluation of occupants’ well-being and perception towards indoor environmental quality in Malaysia affordable housing

2019 ◽  
Vol 17 (1) ◽  
pp. 90-106 ◽  
Author(s):  
Syahrul Nizam Kamaruzzaman ◽  
Ainur Mardiha Azmal
Keyword(s):  
Environmental Quality ◽  
Affordable Housing ◽  
Questionnaire Survey ◽  
Sick Building Syndrome ◽  
Well Being ◽  
Health Condition ◽  
Indoor Environmental Quality ◽  
Content Type ◽  
Housing Area ◽  
Sick Building

Purpose This paper aims to identify the indoor environmental quality in an affordable housing, as well as the health condition of users. Furthermore, it aims to find the relationship between quality of the indoor environment (IEQ) and sick building syndrome (SBS) and the satisfaction level of the occupants towards the IEQ factor, as well as the importance of the factors in the occupants’ view. Additionally, the purpose of this pilot study is to validate the questionnaire and identify the possible outcome of this research for the main study. Design/methodology/approach There are a few methods to achieve the objective of this paper: first is by literature review and second is by a survey. There are two types of survey made: observation survey and questionnaire survey. The purpose of observation survey is to survey the surrounding and the condition of the apartments, while questionnaire survey was distributed to the respondents in the affordable housing area. Next, is analysis and discussion of the survey, and finally, summary. Findings Aside from achieving the validity of the questionnaire survey, the results of the survey have found that the respondents are dissatisfied with the noise and glare level, as well as the amount of artificial lighting in their unit. Additionally, they have rated health, ventilation and amount of air movement as the most important IEQ factors. More importantly, the occupants have experienced the symptoms of SBS and the health condition of the building occupants. The results show that the most frequent symptoms affected the respondents are fatigue, dizziness and a headache. Originality/value This paper has indicated the IEQ in the affordable housing and identifies the health risk of occupants, specifically in Malaysia.

Gauging the impact of personal lifestyle, indoor environmental quality and work-related factors on occupant productivity when working from home

2022 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xingzhou Guo ◽  
Hongyue Wu ◽  
Yunfeng Chen ◽  
Yuan Chang ◽  
Yibin Ao
Keyword(s):  
Environmental Quality ◽  
Healthy Lifestyle ◽  
Indoor Environmental Quality ◽  
Related Factors ◽  
Content Type ◽  
Work Related ◽  
Working From Home ◽  
Home Based ◽  
Flexible Schedule ◽  
Environment Control

PurposePersonal lifestyle, work environments and work-related factors can significantly affect occupant productivity. Although many studies examine the affecting factors of occupant productivity in offices, explorations for the home-based work environment, which is designed mainly for living purposes, are still scarce. Moreover, current pandemic has made work from home a new normal for workers around the world. Therefore, it is important to identify key causal factors of occupant productivity when working from home.Design/methodology/approachThis study employed descriptive analysis and regression analysis method to explore the relationship among personal lifestyle, indoor environmental quality and work-related factors toward occupant productivity. A questionnaire including a comprehensive list of key measures was designed and 189 valid responses were collected from more than 13,000 participants.FindingsResults show that a healthy lifestyle, the perceived satisfaction of visual and acoustic environment, communication, interest in work, workload, flexible schedule and privacy positively affect occupant productivity when working from home, while coffee consumption, outside views and windows have negative effect.Originality/valueOpportunities to enhance occupants' home-based work productivity include developing a healthy lifestyle by taking advantage of flexible schedule, equipping a working room at home with advanced and intelligent environment control systems, and improving communication, workload and schedule by changing the policy of companies.

Research on Comfort Performance of Green Building and Conventional Building

2013 ◽  
Vol 312 ◽  
pp. 822-825
Author(s):  
Na Li
Keyword(s):  
Life Cycle ◽  
Cost Effectiveness ◽  
Work Environment ◽  
Environmental Quality ◽  
Green Building ◽  
Green Buildings ◽  
Indoor Environmental Quality ◽  
Development Costs

t has been argued that green buildings have a better indoor environmental quality than conventional buildings and that this translates into a more satisfying workplace for the building's occupants and, inturn, a more productive workforce. Assessing a building's cost effectiveness means taking into account all the costs that will be incurred during its life cycle not just development costs. People found no evidence to believe that green buildings are more comfortable than conventional building. In fact, the only difference between the buildings was that occupants of the green building were more likely to perceive their work environment as warm, and occupants who felt warm were more likely to describe their work environment as poor.

Identifying the impact of incremental innovations on customer satisfaction using a fusion method between importance-performance analysis and Kano model

2013 ◽  
Vol 31 (1) ◽  
pp. 32-52 ◽  
Author(s):  
Gerson Tontini ◽  
Jaime Dagostin Picolo
Keyword(s):  
Performance Analysis ◽  
Customer Satisfaction ◽  
Design Methodology ◽  
Gap Analysis ◽  
New Method ◽  
Kano Model ◽  
Attribute Importance ◽  
Content Type ◽  
Customer Dissatisfaction ◽  
The Impact

Purpose – This paper aims to present and compare a new method, improvement gap analysis (IGA), with two different versions of importance-performance analysis (IPA) – original IPA and diagonal IPA – focusing on how each method evaluates the possible impact of incremental innovations on customer satisfaction. Design/methodology/approach – Two studies were carried out, one with users of mobile phones and another with users of a fitness centre. Mobile phone users answered questions about 24 attributes, of which six were incremental innovations at the time of the research. Users of the fitness centre answered questions about 16 attributes, of which three were incremental innovations. Findings – Both case studies show that diagonal IPA overcomes two limitations of original IPA, in terms of IPA's failure to address: the high correlation between stated importance and customer satisfaction and the non-linear relationship between attribute performance and customers’ satisfaction. However, diagonal IPA is unable to identify the possible impact of incremental innovations on customer satisfaction. Thus, IGA is formulated to overcome both the problems with original IPA and the limitation of diagonal IPA. Research limitations/implications – The new method, IGA, uses expected customer dissatisfaction as a measure of attribute relevance. Its relationship with other methods used to evaluate attribute importance should be studied in the future. Originality/value – The paper presents a new method (IGA) that is able to overcome problems of original and diagonal IPA methods and is also able to identify the possible impact of incremental innovations on customer satisfaction.

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