Chang-Yu Hong

In this research, an innovative, integrative method is applied, which not only links media discourse and statutory planning documents but also involves both quantitative and qualitative analysis. By going beyond the traditional extreme of either policy review or text-based SETS frameworks, this study becomes the pioneer of a dual-coded, matrix-driven approach, which is capable of measuring policy–implementation gaps and empirically revealing the impact of media framing on disaster management outcomes. The 29 October 2024 Valencia flood, which claimed over 229 lives, highlights critical shortcomings in the region’s flood management policies. This study evaluates media and institutional sources to examine how public discourse aligns with post-flood management strategies. It focuses on Valencia’s statutory flood management plan, the “Pla d’acció territorial de caràcter sectorial sobre prevenció del risc d’inundació a la Comunitat Valenciana” (“Regional Action Plan for Flood Risk Prevention,” PATRICOVA) and its limited integration with the Socio–Ecological–Technological Systems (SETS) framework, which we identify as a central weakness. By analyzing Spanish media coverage, particularly from sources such as El País, ABC, and La Vanguardia, alongside government policy documents, the study reveals a gap between theoretical flood risk planning and practical disaster response. Our keyword-based text mining of leading newspapers highlights the neglect of social, ecological, and technological interactions. While PATRICOVA emphasizes nature protection and technological infrastructure, it overlooks critical societal dimensions and climate adaptation scenarios. Media analysis reveals significant failures at the SETS interfaces, especially in early warning systems, intergovernmental coordination, and community preparedness.

While prior studies on LULC change in the Ewa region of O’ahu Hawai’i have explored the policy implications and the rapid infrastructure changes on land use, very few studies have attempted to fully integrate both of these changes in a comprehensive, long-term study of island geographies. Most of the past work has focused on general trends or short-term fluctuations, without considering the play of nuanced interactions between urbanization policies, transit-oriented development, and constraints of Hawai’i’s finite land resources. To fill these gaps, this study examines LULC changes in Ewa, Honolulu between 2002 and 2022, which emphasizes the impacts of strategic urban policies and infrastructure development, such as the Honolulu Skyline Rail Transit System. Using Landsat 7 satellite imagery and random forest machine learning classifier, in Google Earth Engine, LULC is classified into urban, forest, vegetation, barren, and water with classification accuracy of over 85%. The results highlight trends of significant urban growth especially after 2010, and highlight key issues of tension between housing demands and environmental sustainability in O’ahu. This study highlights the potential of integrated remote sensing and policy analysis for informing sustainable development in land-constrained island settings, and advocates for planning frameworks that more effectively balance growth, ecosystem stewardship, and community welfare.

Urban flooding presents increasingly complex challenges exacerbated by climate change, rapid urbanization, and aging infrastructure. This investigation combines planning theories and socio-hydrological modelling to create a planning-adaptable urban flood management strategy. The case study of Chiba Prefecture, Japan, demonstrates this approach in depth. By applying the Social-Ecological-Technological Systems (SETS) framework in combination with planning theories, the study has identified the relationship between the conventional engineered methods and the newly introduced environmentally friendly (nature-based) solutions. Our findings, which are based on content analysis of 23 official statutory planning documents, indicate that there is a significant focus on the conservation of ecosystems and green infrastructure balanced with issues of emergency planning and community engagement. One of the points that the results highlight is integrating the ecological, social and technological aspects in order to create flood management policies that are both robust and fair. This integrated approach offers a robust framework for mitigating flood risks while promoting sustainable urban development and long-term community resilience.

The COVID-19 pandemic has caused a profound interruption in the way people travel and has had a very negative impact on tourism and economics throughout the world, especially on the coastal fishing communities in South Korea. These previously problematic areas, having suffered a decrease in the local population as well as stood in the midst of the economic downturn, experienced a great cut in the number of tourists coming from far away, which additionally caused their collapse of resilience and sustainability. This research investigates the recovery trends of 45 seashore-fishing districts in South Korea and how the change in travel distance and the number of visitors before and after the pandemic have affected these trends. Through the utilization of big data from the Korea Tourism Data Lab (2019–2023) and Geographic Information System (GIS) analysis, we observe the changes in visitor flows, use the indices of resilience as an indicator to measure them, and investigate how proximity affects travel recovery. The survey results indicate that the regions neighboring metropolitan zones were not only the ones that suffered the most from travel distance during the pandemic but also experienced quick recovery after the pandemic. The new promotional campaigns, in tandem with an improved network of transportation, contributed to the swift recovery of these areas. The remote areas, on the other hand, persist in fighting the problems of regionalized tourism and have only limited accessibility. The proposition of “distance-dependent resilience” theory as well as the Blue Urbanism framework is offered in order to bring up the ideas of sustainable tourism and population stabilization. The study is expected to serve as a cornerstone for the practice of adaptive governance and strategic planning in the matter of the coastal areas after the pandemic.

This study aims to evaluate the impact of integrating the Social, Ecological, Technological Systems (SETS) keyword coding—which categorizes sustainability themes into social, ecological, and technological dimensions—into seafood consumption education programs. In this study, the SETS framework is utilized to conduct an analysis of the educational environment around the consumption of seafood in South Korea. Through the utilization of focus group interviews with industry professionals, the research reveals that the current educational framework on the consumption of seafood and dietary education has a substantial gap in its coverage. The study indicates a predominant focus on the social aspects (56.46%) of seafood consumption education among stakeholders, succeeded by the technological (28.26%) and ecological dimensions (15.28%). To enhance seafood dietary education, the study proposes two primary avenues: developing comprehensive seafood dietary education programs for diverse age demographics and establishing a training system for specialized professionals in seafood dietary education. Future research should refine the SETS approach and explore its broader application across food systems to further promote sustainable consumption.

This study uses the Social–Ecological–Technological Systems (SETS) framework to examine the urban disaster management strategies of Toyama City, Japan. The recent seismic shocks on the Noto Peninsula highlight the importance of implementing efficient disaster management. Toyama City has incorporated the United Nations’ Sustainable Development Goals into its statutory planning frameworks and urban management policies. This synthesis promotes a cooperative approach to disaster resilience while effectively managing challenging limitations. However, we investigate how Toyama City’s policy may be improved using policy direction evaluation and SETS allomorph coding. This extensive allomorph analysis of the city’s urban planning and disaster management documents shows a dominant focus on social and technical elements, including emergency preparedness, policy, economic criteria, and infrastructure. Nevertheless, the results reveal a significant deficiency in ecological considerations, indicating an asymmetry in the existing policy framework. Our study emphasizes the need for a comprehensive disaster management strategy that considers social, technological, and ecological variables to improve the city’s ability to support sustainable development and socio-hydrological challenges.

This study quantified uncertainties involved in assessing the future flood vulnerability in 33 urban areas with population exceeding designated thresholds in South Korea. The driver-pressure-state-impact-response (DPSIR) framework was utilized as the study procedure, integrating social, economic, and environmental factors. In addition, a total of 220 cases of combinations were examined, encompassing twenty general circulation models combined with shared socioeconomic pathway scenarios, five weight determination methods, and three multi-criteria decision-making (MCDM) techniques, as sources of inherent uncertainties in the process. The rankings of urban flood vulnerability (UFV) for the selected cities were comprehensively assessed considering all combinations, followed by an analysis of variance test to investigate contributing sources of uncertainties. As a result, Incheon and Busan were found to be vulnerable to flooding, while Yeongcheon and Andong appeared to be safe cities. Some cities exhibited wide ranges in their rankings, such as Daegu, Yangpyeon, and Jeongeup. The identified contributing sources were weighting (58%), MCDM (27%), and the combination of weighting and MCDM methods together (15%). This study revealed that weight determination methods and MCDM techniques are the primary sources of uncertainties in the assessment of future UFV instead of multiple GCMs and SSPs. This finding underscores the importance for decision-makers and stakeholders to carefully consider these uncertainties for sustainable flood risk management and prevention.

Most industrialized nations have attempted to control floods through civil engineering technologies. However, these measures have failed in the face of immense natural forces. Through allomorph analysis and expert interviews, this study examined the situation of implementing urban flood rules in major Japanese cities. The river canal in the Tokyo region is mostly maintained through infrastructure, and Tokyo has a diverse network of systems linked by rivers, canals, and drainage channels, which demonstrates its dominance in structural and civil engineering flood management. In Osaka Prefecture, flood risk management is an ongoing process built on a structural engineering foundation, and local governments continue to examine and update new policies to handle the risks and difficulties produced by ever-changing flood catastrophes. To enhance public education and awareness, local administrations in the Toyama and Chiba Prefectures are implementing programs to educate locals about flood hazards and preparation. To summarize, public engagement is an important component of flood risk mitigation and management in Japanese communities. Governments may help communities become more resilient and prepared in the face of floods by involving local residents, institutionalizing public education and awareness, and building volunteer networks. This is the conclusion reached as a result of socio-hydrological intervention.

Jwa, M.S. and Hong, C.-Y., 2023. Abiotic stress tolerance of juvenile small abalone Haliotis diversicolor aquatilis (obunjagi) to gamma irradiation. Journal of Coastal Research, 39(1), 55–62. Charlotte (North Carolina), ISSN 0749-0208. In South Korea, the small abalone (obunjagi), Haliotis diversicolor aquatilis, is a prominent commercial seafood species. However, summer circumstances frequently impede abalone productivity, emphasizing the need for suitable approaches to promote abalone viability. The purpose of this study was to see if the survival rate and physiological responses of juvenile H. diversicolor aquatilis changed after exposure to low-level 60Co-gamma irradiation under high temperature (HT) and low salinity (LS) stress conditions (20 Gy). For this research, juvenile small obunjagi, H. diversicolor aquatilis, were obtained from Jeju City fishing vendors, Korea. Before the experiment, all abalone samples were acclimated for 7 days in a seawater-filled tank at 23°C ± 0.3°C and 32 ± 0.2 psu under starvation conditions. Seventy abalones (20 male and 50 female) were gamma irradiated and 30 abalones (10 male and 20 female) were used as controls. After 6 weeks of malnutrition, abalone survivability and the quantity of cardiovascular hemocytes rose dramatically after 20-Gy exposure compared with the control (0 Gy). The viability of abalone was dramatically reduced by HT stress but not by LS stress. The initially improved immune response-mediated hormetic impact might be connected to abalone survival rate under famine and HT stress, and the hormesis-induced gamma radiation exposure strategy will successfully raise abalone productivity throughout summer.

This study aims to determine whether the effect of interactivity on participation in virtual sports has risen because of the COVID-19 pandemic and if there is a difference in decision-making. The significance of social factors may be highlighted even more as a rationale for using virtual reality (VR) sports apps throughout the prolonged COVID-19 epidemic. A model was built based on the literature to describe the intention to participate in VR sports, and eight associated hypotheses were established. A sample of 301 submissions from a user poll on Korea’s cycling information sharing website was used for our analysis. SPSS 23.0 (IBM, Armonk, NY, USA) and AMOS 18.0 (IBM, Armonk, NY, USA) were used to validate Hypotheses 1–8 using a multigroup structural equation model (SEM) analysis and multigroup analysis. Although some hypotheses were not validated, the impact of perceived interaction presented as an extra variable altered based on the group participating before and after the COVID-19 epidemic, and the study’s goal was achieved. Given that information technology has evolved by overcoming physical space and socio-cultural constraints to create a society that connects people, the importance of online interaction, such as networking and competition between users, will be emphasized in the VR sports field in the future.