How do buildings adapt to changing occupancy? A natural experiment

Most office buildings regulate their indoor climate through conservative setpoints and schedules based on maximum occupancy. However, the occupancy of most office buildings rarely exceeds 50%. Buildings' lack of adaptability to partial occupancy exacts a toll on their energy use by providing building services excessively and inefficiently. Largely vacant office buildings left in the wake of the COVID-19 pandemic present a natural experiment to evaluate the extent of this problem. Three-parameter univariate changepoint models were employed to estimate the change in energy use before and during the pandemic in two institutional office buildings: one with occupancy-based ventilation, and one with traditional ventilation. A calibrated energy model was developed for the traditional building to determine how much energy could have been saved if occupancy-based ventilation was implemented. It was found that the building could have saved up to 32% and 12% for heating and cooling, respectively, in the pre-pandemic period alone. © International Building Performance Simulation Association, 2022

Child Welfare Practice Improvement Efforts: A Descriptive Study of Capacity Building Services Received by Courts, States, and Tribes

The staff practices and organizational processes of child welfare agencies and courts influence families' experiences and outcomes. Capacity building services have been delivered to improve organizational performance and practices, but studies of their impact are hampered by a lack of data on specific features of services. This study describes services delivered by the Child Welfare Capacity Building Collaborative during 2017–2019 using data from the Collaborative's service and outcome tracking system. By supporting more rigorous study, these data can promote service improvements. These service data also provide a baseline that can be used to explore how services may change over time in response to federal legislation and social contextual factors such as the coronavirus pandemic.

Diagnosing and quantifying post-COVID-19 fluctuations in the architecture billings indices

Purpose: The purpose of this paper is to understand the post-COVID-19 fluctuations in the building construction demand from various angles at the national, regional, and sectoral levels. Despite the significant impact of COVID-19 on the building construction industry, a detailed quantitative analysis of the COVID-19 impact on the building construction demand is still lacking. The current study aims to (1) establish a statistical approach to quantify the COVID-19 impact on the building construction demand;(2) investigate the post-COVID-19 fluctuations in the construction demand of different building services, regional markets, and building sectors using the historical time series of the architecture billings index (ABI);and (3) identify vulnerable market and sector and discuss the post-COVID-19 recovery strategies. Design/methodology/approach: The research methodology follows four steps: (1) collecting national, regional, and sectoral ABIs;(2) creating seasonal autoregressive integrated moving average models;(3) illustrating cumulative sum control charts to identify significant ABI deviations;and (4) quantifying the post-COVID-19 ABI fluctuations. Findings: The results show that all the ABIs experienced a statistically significant decrease after COVID-19. The project inquiries index reduced more but recovered faster than billings and design contracts indices. The midwest billings index decreased the most among the regional ABIs and the commercial/industrial billing index dropped the most among the sectoral ABIs. Originality/value: This study is unique in the way that it utilized the ABI data and the approach using SARIMA models and CUSUM control charts to assess the post-COVID-19 building construction demand represented by ABI fluctuations. © 2022, Emerald Publishing Limited.

Student housing design implications for single-room occupancy during COVID-19 in Ghana

Purpose The adaptation of emerging building designs for single room occupancy in off-campus university student housing during the COVID-19 pandemic is evolving. However, assessing its effects on student satisfaction to compensate for COVID-19-associated impacts is missing. As a result, the study examines the satisfaction of students with emerging building designs in single-room off-campus student housing in Ghana. Design/methodology/approach The study is quantitatively based on positivist philosophical thinking. A purposive sample of 202 purpose-built student housing facilities was selected across public and private universities in Ghana. Using systematic stratified sampling, the study sampled 1,212 student residents through a survey. A principal component method (PCM) was used to assess the availability of 10 emerging building design and basic building services variables across the study location. Multiple regression was employed to determine the satisfaction and predict potential variables for policy formulation. Findings The analysis revealed that private space for social distancing, the availability of hands-free fittings in the toilet and bathroom, and the availability of hands-free fixtures in the kitchen unit was common single-room self-occupancy support systems. However, there is a huge gap in the availability of key emerging building designs and basic building services and their associated effects on students' satisfaction across the study locations. Therefore, relevant proposals to serve as fundamental requirements for developing an off-campus student housing model during pandemics were indicated. Research limitations/implications It is seen that emerging building designs across the housing sector are equally evolving among off-campus student housing. The study helped to understand that student satisfaction with emerging building designs and basic services is a motivational need for students. However, the preparedness of student housing owners to adopt and satisfy the requirements of these design require further studies. Originality/value While COVID-19 and its associated effect keep evolving in building design requirements, it is equally relevant to assess the students' satisfaction with these designs and services among single room occupancy-made off-campus student housing. This research is limited to Africa.

The impact of physical environment on health-care workers’ well-being in Chinese hospitals during COVID-19 pandemic

Purpose: Using a quantitative research method, health-care workers’ (HWs) well-being was taken as the dependent variable while the two independent variables were physical quality and service environment. This study aims to focus on the well-being of HWs in their physical environment. Design/methodology/approach: This study used a hybrid method that is a combination of literature review and questionnaire survey. This study used quantitative research design which is a systematic study of phenomenon by collecting quantifiable data and performing statistical, mathematical or computational techniques. This study is conducted among HWs, with doctors and nurses at four Chinese government hospitals in the southern city of Changzhou (near Shanghai) as participants. Findings: A total of 222 responses were obtained from a random sample of HWs from four hospitals in Changzhou City, Jiangsu Province. Three-fifth of the participants (n = 133, 60%) are satisfied with hospital equipment and half (n = 111.50%) of them are satisfied with the modern technology in place. About one-third (n = 67, 30%) are satisfied with ventilation and only one-fifth (n = 44, 20%) are satisfied with hygiene. Most HWs think it was necessary to provide tests for frontline workers. Originality/value: In the wake of COVID-19 in 2020, HWs are working long hours every day facing high risk of infection and stress. This research investigates the satisfaction level and the difficulties experienced by HWs based on the current physical environment setting during COVID-19 pandemic. © 2022, Emerald Publishing Limited.

The effects of word-of-mouth and online review marketing strategies on students’ satisfaction with their housing selection during COVID-19 season

Purpose>This study aims to examine the effect of using word-of-mouth and online housing website strategies for student housing selection and building services satisfaction during COVID-19.Design/methodology/approach>The study adopted mixed-methods research approach. An online survey of 975 public and private university students experience on room selection prior to school re-opening in Ghana was used. An exploratory factor analysis (EFA) and multiple regression model (MRM) were used to estimate the satisfaction of using online websites and word-of-mouth strategies (renting housing based on personal recommendation) on student room pricing and building services availability. Telephone interviews were further used to support the results of EFA and MRM.Findings>The study reveals that most students were satisfied with the word-of-mouth strategy than online review marketing strategy for room selection during the COVID-19 pandemic. Secondly, online student housing review marketing strategy provided higher rent which did not reflect the services available. Furthermore, students were more interested in the nature of rooms, lavatories and kitchen in their choice of room than availability of internet, study area, television (TV) room and gym center.Practical implications>The study suggest that student housing managers require to market their facilities as-it-is than to use one room as an advertising justification for all rooms which does not usually provide a true reflection of the existing situation of room. Again, housing which rely on online marketing strategies need to provide compensation for students who feel they have been misled by their advertisement.Originality/value>The provision of compensation to students and availability of COVID-19 protection measures determine student room selection. Asides, the introduction of online marketing strategies in student housing in sub-Saharan student housing market is new, and, consequently, this study on it is a novelty.

Relaxing and working from home: Associations between heating, ventilation and cooling system typologies and indoor soundscape evaluation

Data from an online survey conducted in January 2021 by 464 participants living in London and working from home (WFH) after the COVID-19 outbreak were analysed, focusing on: (1) types of building services at home, (2) perceived sound dominance of building services, and (3) the perception of the indoor acoustic environment (i.e. the indoor soundscape) in relation to two main activities, i.e. WFH and relaxation. Results show that most of participants' houses had radiators for heating and relied on window opening for ventilation and cooling. Air systems (e.g., HVAC systems) resulted in higher perceived dominance compared to other systems, but only when evaluated for WFH. Sound dominance from building services was in turn related to soundscape evaluation. Spaces with less dominant sounds from building services were more appropriate for both WFH and relaxation, and spaces with fewer dominant sounds were assessed better, but just for WFH. Participants' evaluations generally did not differ according to building service typology. The presence of air-cooling systems was associated with better perceived sound environments, most likely due to better acoustics conditions in newly built or retrofitted dwellings, more probably equipped with air cooling systems. Preliminary findings point out the importance of carefully considering the dominance of sounds by building services, especially for air systems, in relation to traditional and new uses of residential buildings. © 2021 Institute of Physics Publishing. All rights reserved.

An overview of solutions for airborne viral transmission reduction related to HVAC systems including liquid desiccant air-scrubbing.

The spread of the coronavirus SARS-CoV-2 affects the health of people and the economy worldwide. As air transmits the virus, heating, ventilation and air-conditioning (HVAC) systems in buildings, enclosed spaces and public transport play a significant role in limiting the transmission of airborne pathogens at the expenses of increased energy consumption and possibly reduced thermal comfort. On the other hand, liquid desiccant technology could be adopted as an air scrubber to increase indoor air quality and inactivate pathogens through temperature and humidity control, making them less favourable to the growth, proliferation and infectivity of microorganisms. The objectives of this study are to review the role of HVAC in airborne viral transmission, estimate its energy penalty associated with the adoption of HVAC for transmission reduction and understand the potential of liquid desiccant technology. Factors affecting the inactivation of pathogens by liquid desiccant solutions and possible modifications to increase their heat and mass transfer and sanitising characteristics are also described, followed by an economic evaluation. It is concluded that the liquid desiccant technology could be beneficial in buildings (requiring humidity control or moisture removal in particular when viruses are likely to present) or in high-footfall enclosed spaces (during virus outbreaks).