http://hdl.handle.net/10453/35197 2026-06-24T22:12:53Z http://hdl.handle.net/10453/195390 Title: Innovative Design of Adjustable Multi-Slat Photovoltaic Shading Devices for Energy-Efficient Office Spaces in Sydney Authors: Nazari, S; Mirzamohammadi, PK; Shirazi, A Abstract: A dual function of shading and electricity generation can be achieved with Photovoltaic Shading Devices (PVSDs); however, existing static systems lack adaptability to dynamic solar conditions. Therefore, an adjustable dual-axis solar-tracking multi-slat PVSD system is proposed in this study to address these limitations, positively impacting energy efficiency and occupant comfort. An office space at the University of Technology Sydney is considered as a real-world case study, and parametric modeling is conducted using Grasshopper and Ladybug tools for energy and daylight simulations. Results showed that the proposed PVSD systems can cover the building energy demand under window-to-wall ratios (WWR) ≥ 70%, while covering cooling energy demand in all scenarios and lighting energy demands in cases with more than 50% of WWR. Comapred with the base reference, adding the PVSD systems can reduce the lighting and cooling energy demand by aournd 50% and 10 - 20%, respectively. The practical feasibility and scalability of adaptive PVSDs are demonstrated in this study, advancing sustainable building design. 2025-01-01T00:00:00Z http://hdl.handle.net/10453/195100 Title: An Empirical Study of Contractors’ Bidding Trends in Recurrent Bidding: A Case of Singapore Public Sector Construction Projects Authors: Zhang, Y; Oo, BL; Runeson, G; Lim, BTH Abstract: There have been limited empirical studies that aimed to establish the tenability of the stationarity assumption in recurrent construction bidding, and thus the need for and importance of allowing for continuity in bidding models remain unexplored. This study examined the bidding trends of individual contractors according to their level of experience in recurrent bidding, to test the tenability of the stationarity assumption. The data sample was a past bidding dataset of Singapore public sector construction projects over a five-year period between 2017 and 2021, with over 8000 bidding records from more than 900 contractors. The results show that there were statistically significant changes in the contractors’ bidding trends, irrespective of their level of experience in recurrent bidding and different time periodicities, ranging between 10 and 20 months. Thus, the stationarity assumption that contractors behave in a probabilistically consistent way over time, regardless of changing conditions, was untenable for the data sample involved. The observed changes in the contractors’ bidding trends cannot be regarded as random, but represent a continuous strategic process in response to changes in market forces. It is postulated that the possible causes of changes vary among individual contractors, in which there are a set of varying internal and external factors they consider at the time of bidding. The findings have implications for future bidding modelling attempts, in allowing for continuity in recurrent bidding. Contractors should systematically review and re-optimize their bidding strategy by leveraging their historical bidding data and bidding feedback information from clients, since their potential competitors will do the same thing for recurrent bidding. 2025-02-01T00:00:00Z http://hdl.handle.net/10453/193391 Title: Viewpoint: opening up the conversation on planning for disability equity and inclusion in Australia with a new discussion paper Authors: Stafford, L; Taylor, M; Holmes, A; Traill, A; Bailey, D; Henderson, T; Novacevski, M Abstract: Planning for Equity and Inclusion will play a critical role in planning futures. Yet to be successful, we must ensure we are including and planning for everyone. To date, there has been little policy and practice guidance on planning for disability equity and inclusion. This viewpoint presents a recent discussion paper written by Australian Planners, some who identify as having different disabilities,11 Disability is widely encompassing term including physical, sensory, cognitive, neurological, psychosocial impairments, Deaf/deaf or hard of hearing, mental health needs, chronic-illness and neurodivergence.as a way to start to close these gaps. The paper is underpinned by research from a four-year Planning Inclusive Communities project. The purpose of writing the discussion paper is threefold: 1. To lead the planning profession in a discussion on disability inclusion and equity. 2. To build awareness on how our planning profession can contribute positively and support disability inclusion and equity more widely. 3. To help build capacity and empower practitioners. Furthermore, the paper also suggests a pathway forward. The hope of this viewpoint is to raise awareness of the discussion paper and to stimulate conversations on Planning for Equity and Inclusion for all Australians, which is a pre-requisite to achieving liveable, sustainable communities, cities and regions. Disability is widely encompassing term including physical, sensory, cognitive, neurological, psychosocial impairments, Deaf/deaf or hard of hearing, mental health needs, chronic-illness and neurodivergence. 2025-04-03T00:00:00Z http://hdl.handle.net/10453/192291 Title: Community participation in 3R (Reduce, Reuse and Recycle) of household plastic waste in Balikpapan Authors: Prasaningtyas, A; Rini, IDWS; Basransyah,; Harfadli, MMA; Rachmannia, NC Abstract: The 3R (Reduce, Reuse, Recycle) effort is focused on reducing plastic waste generated from household activities. Community participation is very necessary in realizing efforts to reduce plastic waste. This research aims to analyse community participation regarding efforts to reduce 3R plastic waste (Reduce, Reuse and Recycle) based on the amount of generation and composition of household plastic waste in Balikpapan City. The data used in this research are primary and secondary data. Measurement of waste generation and composition data refers to SNI 19-3964-1994. Participation data collection was carried out by distributing and filling out questionnaires offline to the public with a total of 100 families of respondents obtained from the Slovin method calculation in determining the sample size. The results of this research showed that the average generation of household plastic waste from 100 families in Balikpapan City was 9.55 Kg/day with the highest composition of plastic waste dominated by PET at 3.14 Kg/day. Community participation in Reduce efforts was 68% in the “good” category, Reuse was 58% in the “good enough” category and Recycle was 29% in “not good” category. 2025-01-01T00:00:00Z