Metropolitan Cebu, the third largest agglomeration in the Philippines with a population of approximately 3 million, faces significant challenges in managing domestic wastewater and solid waste. This mismanagement has led to the pollution of its water bodies, including the Mahiga Creek and the Butuanon River, the latter of which was declared dead in 1992 and can no longer support flora and fauna. Between 2017 and 2025, seven international River Challenge Climate Cafes were conducted by Dutch universities of Applied Sciences and Filipino universities . During these events, teams of young professionals assessed the upstream, midstream, and downstream stretches of Metro Cebu's rivers and evaluated the vulnerability of 12 urban poor communities living along these rivers. The primary aim of these rapid appraisals was to raise awareness among community members, local governments, and students, as well as to build capacity. Throughout the process, there was a shift from merely gathering data on pollution levels to engaging the community, identifying risks, and finding feasible solutions to mitigate these risks. Various methods were employed to measure water quality, river width, river discharge, flood heights, ecology, plastic waste pollution, and residents' perceptions. The results were shared online via Climatescan.org with the global climate adaptation community. The findings demonstrate that river challenges are effective tools for creating context-rich learning environments for students, with more than 250 participants. The River Challenge Climate Cafe enable young professionals, primarily with technical backgrounds, to gain firsthand field experience, exposure to environmental degradation, severe pollution, and vulnerable communities, thereby enhancing their environmental awareness. Additionally, the river scan challenge proves to be a valuable tool for increasing awareness of river pollution and promoting rehabilitation effortsHow to cite: Heikoop, R., Boogaard, F., Abrenica, B., Fornis, R., Borgonia, K., Ledesma, D., Nasara, J., Boer, E., and Oudendammer, T.: Enhancing Environmental Awareness Through River Challenges: A Case Study of Metropolitan Cebu, Philippines , 12th International Conference on Urban Climate, Rotterdam, The Netherlands, 7–11 Jul 2025, ICUC12-1052, https://doi.org/10.5194/icuc12-1052, 2025.
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Local online retail platforms (LORPs) are gaining popularity as digital channels that can increase physical retail agglomerations’ attractiveness and viability by stimulating online sales and consumer footfall. However, insights are needed to enrich academic understanding and guide practitioners in their decision-making process regarding use and optimization of these platforms for boosting retail agglomeration vitality. Drawing on uses and gratifications theory, an online survey of 442 Dutch consumers revealed that positive attitudes toward browsing LORPs induced both online purchase and offline visit intentions. Interestingly, despite LORPs' local focus, non-place-specific motives more substantially impacted positive browsing-related attitudes toward LORPs than place-specific ones.
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The research explored how a Dutch energy cluster embedded within a larger context of European and global developments reflected complex dynamics due to changes in its context. The case study explored Energy Valley of the Netherlands, a peripheral region that meets the challenge of energy transition, regional development and national economic interests. The research engaged complex adaptive systems approach to gain insights into complex cluster dynamics to contribute to cluster study and policy.The research captured insights into increased complexity of an energy cluster due to energy transition and other developments in the cluster context, exacerbated by differences in perceptions and responses of stakeholders to the new challenges. Findings on cluster developments included insights into cluster context, cluster condition, cluster dynamics and cluster transformations, and the interconnectedness of such developments based on Energy Valley and supplementary cases of Karlstad and Silicon Valley. The research findings led to insights into cluster systems developments and a model capturing cluster emergence.The research contributed to cluster theory by developing a CAS approach for cluster study that developed a whole systems approach to understand cluster dynamics, offering to the field of cluster study a qualitative understanding of cluster systems developments. Insights into interconnected developments at the micro, macro and inter-systemic levels, and into energy clusters in the context of energy transition were results of the research. The broad scope and nature of the study meant limitations were inherent and therefore recommendations for future research were included. EU Cluster Policy motivated the research and hence recommendations for policy developments were also part of the research contribution
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This study introduces a detailed method for analyzing the buckling behavior of laminated composite structures strengthened with multi-walled carbon nanotubes (MWCNTs). We propose a multi-scale analysis that combines analytical and computational techniques to assess the mechanical performance of MWCNT-reinforced composites under combined moisture, temperature, and mechanical stress conditions. The Halpin-Tsai equations are used to calculate the overall stiffness properties of the nano-enhanced matrix, considering factors like MWCNT clustering, alignment, and curvature. Additionally, we incorporate the nanoscopic, size-dependent features of MWCNTs into our model. The Chamis micromechanical formulas are applied to determine the individual elastic properties of the nanocomposite layers, considering the impacts of temperature and moisture. We then explore how variables such as MWCNT content and size, along with temperature and moisture levels, influence the critical buckling load of MWCNT-based laminated composite beams and plates using our multi-scale model. Our results are successfully compared with existing experimental and theoretical data to validate our approach. The developed method offers significant insights for the design and optimization of MWCNT-reinforced composites, potentially benefiting various engineering fields, including aerospace and automotive industries.
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We empirically investigate the factors that drive the uneven regional distribution of foreign direct investment (FDI) across Chinese provinces from 1995 to 2006. We first perform a factor analysis to summarize information embodied in around 40 variables and derive four FDI determinants: ‘institutional quality’, ‘labour costs’, ‘market size’, and ‘geography’. Applying these estimated factors, we then employ instrumental variable (IV) estimation to account for endogeneity. In line with theoretical predictions, we find that foreign firms invest in provinces with good institutions, low labour costs, and large market size. The Arellano-Bond dynamic panel generalised method of moments (GMM) results show strong agglomeration effects that multinationals tend to invest in provinces which attract other foreign firms, consistent with the economic geography literature. Several robustness tests indicate that low labour costs combined with improvements in institutions are the key for attracting FDI in China.
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This conference paper deals with various organizations and pilot initiatives regarding the theme of sustainability.
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The concept of the Daily Urban System (DUS) has gained relevance over the past decades as the entity to examine and explain the functionality of the urban landscape. Daily Urban Systems are usually defined and measured by the strength of commuter or shopper flows between the nodes of the system. It is important to realize that these Daily Urban Systems are the accumulated pattern of individuals making frequent, recurring trips to other localities than their own. Understanding the microeconomic decisions behind these spatial interactions will help in assessing the functional and spatial structure of DUS. In this paper is explored how, based on Dutch empirical data, the individual household’s spatial interactions shape the daily urban system and how the destination of these interactions correlates with personal and spatial variables and motives for interaction. The results show that the occurrence of non-local spatial interactions can be explained by the size-based Christallerian hierarchy of the localities of residence, but that it is the regional population – or market potential – that explains and moderates the sorting of households and the intensity and direction of their spatial interactions in the DUS, matching agglomeration theory.
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The need of an adaptive sustainable solution for the increased land scarcity, growing urbanization, climate change and flood risks resulted in the concept of the floating urbanization. In The Netherlands this new type of housing attracted the interest of local authorities, municipalities and water boards. Moreover, plans to incorporate floating houses in the urban planning have already been developed. However, the knowledge gap regarding the potential effect on the water quality halts the further development of the floating houses. This paper shows the results of a water quality measurement campaign, as part of the national program “Knowledge for climate”, at a small floating houses project in Delft and serves as a case study for addressing the environmental-ecological knowledge gap on this topic.
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The need of an adaptive sustainable solution for the increased land scarcity, growing urbanization, climate change and flood risks resulted in the concept of the floating urbanization. In The Netherlands this new type of housing attracted the interest of local authorities, municipalities and water boards. Moreover, plans to incorporate floating houses in the urban planning have already been developed. However, the knowledge gap regarding the potential effect on the water quality halts the further development of the floating houses. This paper shows the results of a water quality measurement campaign, as part of the national program “Knowledge for climate”, at a small floating houses project in Delft and serves as a case study for addressing the environmental-ecological knowledge gap on this topic.
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