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Three residential colleges located in a university campus at the capital city of Kuala Lumpur and built in different decades were selected for landscape studies with respect to species and position of the trees, as well as the effects of the current landscapes as a shelter in reducing solar radiation on buildings, as a pre-assessment for the Low Carbon Cities Framework (LCCF) and assessment system. These landscape designs were carefully studied through on-site observation. The name and location of the matured plants were redrawn and visualised with standard normal photographs. The studies revealed that the old residential college landscape is dominated by tropical forest trees which are able to provide a significant shade to the buildings and offered a potential to achieve sustainable development due to a higher rate of carbon sequestration. While, palm and hybrid fruit plants were most extensively cultivated in the landscape of new residential colleges due to low maintenance and being fast growing.

The paper aims to explore and analyse the potential of campus living learning laboratory (LLL) as an integrated mechanism to provide the innovative and creative teaching and learning experiences, robust research output and strengthening the campus sustainability initiatives by using the sustainability science approach.

The challenge to adopt sustainability science as an interdisciplinary approach juxtaposed against the structure, teaching and learning of single disciplinary approach in institution of higher education (IHE). The LLL approach can be one of the options on how the integrative teaching and learning, combination fundamental and applied research and campus operations should conduct to strengthen the implementation of campus sustainability.

The review of application of LLL from several campus sustainability and combining with the experiences in conducting the UTM Campus sustainability results the strategic operational mechanism of the integration process.

The LLL approach which applies the sustainability science approach did not cover the challenges and issue related to the inter-, inter- and trans-disciplinary during the campus LLL application. Further study needs to be conducted to strengthen the fundamental approach to developing campus LLL as one approach to operationalizing the Sustainable Development agenda in IHE.

The experiences and findings produces from this study help other campus sustainability to articulate the benefits of campus LLL initiatives, anticipate implementation challenges in teaching and learning, research output and the operation. The problem-solving nature of sustainability science provides a platform for implementing campus sustainability initiatives which allow inter-, inter- and trans-disciplinary approach for a more synergize effort of a real case study and project based approach.

Furthermore, the implementation of LLL challenges the researcher/academia to provide prompt response as part of societal learning process in strengthening applied-based research as well as to contribute to the fundamental research. Successful LLL approach require both top-down commitments from the top management of the university and bottom-up drive from interested faculty, core research themes, operations and students.

The integrative framework and operational mechanism to operate LLL in campus sustainability which resulted from the analysis taken from several universities that implement campus sustainability is the origin values of significant contribution from this study.

Circular economy (CE), as a new economic paradigm, has gained traction in recent years. Cities' role in driving CE forward has been perceived as being increasingly important to achieve sustainable development (SD). For this reason, there is an urgency to understand what a circular city is and how it might be composed. This research explores the ways in which the city-state of Singapore is transitioning to a CE.

A systematic literature review on CE and cities was carried out using a bibliometric review and a snowballing technique. This review was performed on academic and on non-academic papers.

This research has confirmed the lack of robust circular cities case studies. As Singapore has already begun its journey towards circularity, this article examines its current efforts and offers recommendations in the design and implementation of CE policies that may be valuable not just for Singapore but also for high-density and rapidly expanding cities around the world that require a new development pathway to emulate.

This manuscript is the first detailed, independent and comprehensive review of Singapore's approach to CE.

Green building development practices reduce carbon footprint and promote sustainability in the built environment. To foster green building construction in Malaysia, several strategies and sustainability metrics like the Malaysian Carbon Reduction and Environmental Sustainability Tool (MyCREST) have been established. Yet, the implementation of green office building development in Sarawak still remains low. Therefore, the purpose of this paper is to develop MyCREST Embedded Framework (MEF) for enhancing the adoption of green office building construction in Sarawak.

To achieve the research aim, document analysis of the overarching MyCREST Reference Guide was conducted. Then, questionnaire was used to survey 120 green construction professionals in Kuching, the capital of Sarawak. Afterwards, data from the questionnaire was analyzed using Statistical Package for Social Science software version 22. As a result, the significant strategies for enhancing the adoption of green office building construction in Sarawak were identified, and ranked hierarchically using the Relative Importance Index.

The established significant strategies include: government policies and incentives, sustainable technological practices, defined process for executing green building projects and adequate information for the public. Moreover, this study recommends MyCREST as the suitable Green Building Assessment Tool for developing green office buildings in Sarawak due to its integration of carbon reduction strategies with sustainability indicators.

This study is limited to Kuching; hence future study should be extended to other cities in Sarawak.

Based on the findings, the MEF is developed to enlighten the industry practitioners on the approaches that will elevate green office building development in Sarawak.

Lean construction (LC) consists of very effective techniques; however, its implementation varies considerably from one industry to another. Although numerous lean initiatives do exist in the construction industry, the research topic related to LC implementation is still unexplored due to the scarcity of validated assessment frameworks. This study aims to provide the first attempt in developing a structural model for successful LC implementation.

This study developed a Lean construction model (LCM) by critically reviewing seven previous LC frameworks from different countries, defining 18 subprinciples grouped into 6 major principles and formulating testable hypotheses. The questionnaire was pre-tested with 12 construction management experts and revised by 4 specialized academics. A pilot study with 20 construction units enhanced content reliability. Data from 307 Moroccan construction companies were collected to develop a measurement model. SPSS V. 26 was used for Exploratory Factor Analysis, followed by confirmatory factor analysis using AMOS version 23. Finally, a structural equation model statistically assessed each construct's contribution to the success of LC implementation.

This work led to the development of an original LCM based on valid and reliable LC constructs, consisting of 18 measurement items grouped into 6 LC principles: Process Transparency, People involvement, Waste elimination, Planning and Continuous improvement, Client Focus and Material/information flow and pull. According to the structural model, LC implementation success is positively influenced by Planning and Scheduling/continuous improvement (β = 0.930), followed by Elimination of waste (β = 0.896). Process transparency ranks third (β = 0.858). The study demonstrates that all these factors are mutually complementary, highlighting a positive relationship between LC implementation success and the holistic application of all LC principles.

To the best of the authors’ knowledge, this study is the first attempt to develop a statistically proven model of LC based on structural equation modelling analysis, which is promising for stimulating construction practitioners and researchers for more empirical studies in different countries to obtain a more accurate reflection of LC implementation. Moreover, the paper proposes recommendations to help policymakers, academics and practitioners anticipate the key success drivers for more successful LC implementation.