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The total capacity of ambulances in metropolitan cities is often less than the post-disaster demand, especially in the case of disasters such as earthquakes. However, because earthquakes are a rare occurrence in these cities, it is unreasonable to maintain the ambulance capacity at a higher level than usual. Therefore, the effective use of ambulances is critical in saving human lives during such disasters. Thus, this paper aims to provide a method for determining how to transport the maximum number of disaster victims to hospitals on time.

The transportation-related disaster management problem is complex and dynamic. The practical solution needs decomposition and a fast algorithm for determining the next mission of a vehicle. The suggested method is a synthesis of mathematical modeling, scheduling theory, heuristic methods and the Voronoi diagram of geometry. This study presents new elements for the treatment, including new mathematical theorems and algorithms. In the proposed method, each hospital is responsible for a region determined by the Voronoi diagram. The region may change if a hospital becomes full. The ambulance vehicles work for hospitals. For every patient, there is an estimated deadline by which the person must reach the hospital to survive. The second part of the concept is the way of scheduling the vehicles. The objective is to transport the maximum number of patients on time. In terms of scheduling theory, this is a problem whose objective function is to minimize the sum of the unit penalties.

The Voronoi diagram can be effectively used for decomposing the complex problem. The mathematical model of transportation to one hospital is the P‖ΣU_j problem of scheduling theory. This study provides a new mathematical theorem to describe the structure of an algorithm that provides the optimal solution. This study introduces the notion of the partial oracle. This algorithmic tool helps to elaborate heuristic methods, which provide approximations to the precise method. The realization of the partial oracle with constructive elements and elements proves the nonexistence of any solution. This paper contains case studies of three hospitals in Tehran. The results are close to the best possible results that can be achieved. However, obtaining the optimal solution requires a long CPU time, even in the nondynamic case, because the problem P‖ΣU_j is NP-complete.

This research suggests good approximation because of the complexity of the problem. Researchers are encouraged to test the proposed propositions further. In addition, the problem in the dynamic environment needs more attention.

If a large-scale earthquake can be expected in a city, the city authorities should have a central control system of ambulances. This study presents a simple and efficient method for the post-disaster transport problem and decision-making. The security of the city can be improved by purchasing ambulances and using the proposed method to boost the effectiveness of post-disaster relief.

The population will be safer and more secure if the recommended measures are realized. The measures are important for any city situated in a region where the outbreak of a major earthquake is possible at any moment.

This paper fulfills an identified need to study the operations related to the transport of seriously injured people using emergency vehicles in the post-disaster period in an efficient way.

When a major landslide and floods devastated Freetown, Sierra Leone had just overcome the Ebola crisis, which had left its mark on socio-political relations between different disaster response actors. With international disaster response frameworks increasingly shifting to local ownership, the national government was expected to assume a coordinating role. However, in “post-conflict” settings such as Sierra Leone, intra-state and state–society relations are continuously being renegotiated. This study aimed to uncover the complexities of state-led disaster response in hybrid governance setting at national and community levels in the response to the 2017 landslide and floods.

During the four months of fieldwork in Freetown in 2017, semi-structured interviews and focus group discussions with various state, aid and societal actors were conducted.

The findings show that a response to policy building on the idea of a uniform state response did not take into account intra-state power politics or the complexity of Sierra Leone's hybrid governance.

This paper argues for a more nuanced debate in humanitarian governance and practice on the localisation of aid in post-conflict and fragile settings.

The study's findings contribute to the literature on the disaster–conflict nexus, identifying paradoxes of localised disaster response in an environment with strong national–local tensions. The study highlights intra-local state dynamics that are usually overlooked but have a great impact on the legitimacy of different state authorities in disaster response.

There is a large literature about crisis entrepreneurship, spanning from necessity, natural disaster and long-term conflict entrepreneurship. This paper situates pandemic entrepreneurship as a unique form of crisis entrepreneurship.

The authors utilize the Kirznerian and Schumpeterian theories of entrepreneurship to understand pandemic entrepreneurship. Using evidence from the US COVID-19 pandemic, the authors argue that pandemics impact both the “identification” and “action” moments of entrepreneurship.

The Kirznerian identification moment becomes much more uncertain for entrepreneurs because of fluctuating conditions, such as public health conditions, new potential variants of the virus causing the pandemic, shifting government mandates and rules and so forth. The Schumpeterian action moment becomes more challenging because of the necessity of physical distancing and because, generally, all crises raise the cost of entrepreneurial action. That said, the authors still document considerable entrepreneurship during pandemics as entrepreneurs adapt to the increased uncertainty and costs by rely upon local and customary knowledge.

This research finds that entrepreneurs, depending upon the crisis, face differing constraints. Specifically in times of pandemic, entrepreneurs face difficulty recognizing opportunities because of shifting conditions and acting upon opportunities because of financial and political constraints. This research thus implies that there are large opportunities for alleviation of such constraints if there were to be future variants or pandemics.

Practically speaking, this research affects how people study entrepreneurship. By recognizing the differing constraints that pandemic entrepreneurs face, the authors can better understand the last several years, and can also prepare better policy wise for future pandemics or further variants of COVID-19.

Socially, entrepreneurship can be a large factor in recovery from disasters and crises. By recognizing and perhaps alleviating constraints that pandemic entrepreneurs face, future crises could have better responses and recoveries.

Although several studies have examined entrepreneurship during the COVID-19 pandemic, the extant literature on pandemic entrepreneurship remains relatively underdeveloped and has not yet focused on what distinguishes pandemic entrepreneurship from other forms of crisis entrepreneurship. The authors highlight what pandemic entrepreneurship has in common with other forms of crisis entrepreneurship and pinpoint the various ways that is distinct.

Construction industry and the built environment professions play an important role in contributing to society’s improved resilience. It is therefore important to improve their knowledgebase to strengthen their capacities. This paper aims to identify gaps in the knowledgebase of construction professionals that are undermining their ability to contribute to the development of a more disaster resilient society. The paper also provides a series of recommendations to key actors in the built environment on how to more effectively mainstream disaster resilience in the construction process.

The paper reports the findings of 87 stakeholder interviews with: national and local government organisations; the community; non-governmental organisations, international non-governmental organisation and other international agencies; academia and research organisations; and the private sector, which were supplemented by a comprehensive analysis of key policies related to disaster resilience and management. The findings were validated using focus group discussions that were conducted as part of six organised stakeholder workshops.

The primary and secondary data generated a long list of needs and skills. Finally, the identified needs and skills were combined “like-for-like” to produce broader knowledge gaps. Some of the key knowledge gaps identified are: governance, legal frameworks and compliance; business continuity management; disaster response; contracts and procurement; resilience technologies, engineering and infrastructure; knowledge management; social and cultural awareness; sustainability and resilience; ethics and human rights; innovative financing mechanisms; multi stakeholder approach, inclusion and empowerment; post disaster project management; and multi hazard risk assessment. The study also identifies a series of recommendations to key actors in the built environment on how to more effectively mainstream disaster resilience in the construction process. The recommendations are set out in five key themes: education, policy, practice, research and cross-cutting.

This study is part of an EU funded research project that is seeking to develop innovative and timely professional education that will update the knowledge and skills of construction professionals in the industry and enable them to contribute more effectively to disaster resilience building efforts.

The paper provides an extensive analysis of the gaps in the knowledgebase of construction professionals that are undermining their ability to contribute to the development of a more disaster resilient society. Accordingly, the paper recommends major changes in construction education, research, policy and practice with respect to mainstreaming disaster resilience within the construction process.

This paper aims to synchronize the various constitutional regulations that regulate the natural disaster management in Indonesia, especially those which apply in the Yogyakarta Special Territory after disaster through a legal interpretation and construction method to find a community empowerment-based disaster management model, which suits the Indonesian ideals of law.

This research is carried out in the Yogyakarta Special Territory province; this research uses the juridical normative method or the method with the doctrinal or the juridical normative approach. The approaches used in this research are the conceptual approach, statute approach and the sociological approach.

The numerous constitutional regulations that are formed and implemented to regulate the disaster management in Yogyakarta Special Territory cannot yet run its function as an integrating mechanism efficiently. This is mainly because the handling of disasters is usually responsive, without clear planning.

In numerous constitutional regulations, there is a synchronization between the regulations on the society’s rights and responsibilities in disaster management. The point of these regulations is that they state that every citizen has the right to obtain social protection and a sense of safety. They have the right to obtain education, trainings and skills in the establishment of disaster management. Also, they have the right to participate in policies, in accessing information on disaster prevention policies.

Efforts of response toward a disaster should be neither exclusive nor partial. A condition of disaster is a complex condition, which usually asks for a holistic response from various perspectives and experiences. It needs effective teamwork between various institutional groups. Basically, it will not be effective if it is run by a single agency exclusively. Indonesia needs a clear disaster management and needs to synchronize the law for disaster mitigation for minimize the natural disaster impact.

Various constitutional regulations made and applied to regulate disaster management in the Yogyakarta cannot yet run its function as an efficient integrating mechanism, as the law cannot yet undergo the rearrangement of the productive process in the society optimally. The goals determined in the execution of the disaster management are often not legitimized by the society, and they do not yet give a full sense of justice to them. Recovery after Yogyakarta earthquake is a slow process.

This is a relatively new research, as other researches focused on the disastrous impacts of the Yogyakarta earthquake. The disaster management system must consider and must be responsive toward diversity, differences and competition, which may arise due to social, economic, political, community and even religious factors. These differences often create a dynamic and complex relation. A wrong manner in handling this may cause horizontal conflicts.

The purpose of this paper is to examine how advertising is used by real estate companies as an instrument for managing the adverse effects of a catastrophe.

Through a theoretical analysis, types of post-disaster advertising messages were identified. On the basis of the likely variations in post-disaster advertising, a content analysis was conducted of a sample of 4,150 property print advertisements to identify advertising messages related to the earthquake. Finally, the message changes in these earthquake-related advertisements were evaluated and compared with the dimension of time to explore the development of advertising strategies.

The authors found that 12 types of advertising messages were used by developers in response to the Wenchuan earthquake. The initial advertising strategy was mainly to manage public relations, then the strategy was to reduce or compensate for the increased earthquake risk perceptions of buyers.

The findings provide valuable references for helping enterprises adopt effective advertising messages and strategies to reduce the negative effects of disasters.

There are only a few studies on advertising campaigns, especially in the real estate industry, that have been conducted in the wake of catastrophes. This study sought to expand upon the scarce findings in this particular field.

This paper aims to assess to what extent South American countries have integrated recommendations of the international agenda to address human mobility in the context of disasters and climate change in their national laws and policies.

This research sought to find the level of discussions around human mobility in disaster laws, NDCs and National Adaptation Plans (NAPs) by looking for a range of search terms connected to human mobility in the context of disasters and climate change, followed by the content analysis of these terms.

Some advances with regards to human mobility are already confirmed in the domestic level of South American countries through humanitarian visas to disaster displaced persons and the inclusion of the topic in the DRR, climate change laws, NAPs and INDCs/NDCs. But they have not developed specific strategies with regards to it. Hence, their advances still require that national norms and policies are harmonized with the international guidelines. This will enable to fill the protection gap of people in context of disasters and climate change.

The results assess the level of harmonization above-mentioned between international instruments with national policies on human mobility in the context of disasters and climate change in South America.

This paper aims to identify key factors for a contextualised Systemic Risk Governance (SRG) framework and subsequently explore how systemic risks can be managed and how local institutional mechanisms can be tweaked to deal with the complex Indonesian risk landscape.

Using a case study from Palu triple-disasters in Central Sulawesi, Indonesia, the authors demonstrate how inland earthquakes in 2018 created cascading secondary hazards, namely tsunamis, liquefactions and landslides, caused unprecedented disasters for the communities and the nation. A qualitative analysis was conducted using the data collected through a long-term observation since 2002.

The authors argue that Indonesia has yet to incorporate an SRG approach in its responses to the Palu triple-disasters. Political will is required to adopt more appropriate risk governance modes that promote the systemic risk paradigm. Change needs to occur incrementally through hybrid governance arrangements ranging from formal/informal methods to self- and horizontal and vertical modes of governance deemed more realistic and feasible. The authors recommend that this be done by focusing on productive transition and local transformation.

There is growing awareness and recognition of the importance of systemic and cascading risks in disaster risk studies. However, there are still gaps between research, policy and practice. The current progress of disaster risk governance is not sufficient to achieve the Sendai Framework for Disaster Risk Reduction (2015–2030) unless there is an effective governing system in place at the local level that allow actors and institutions to simultaneously manage the interplays of multi-hazards, multi-temporal, multi-dimensions of vulnerabilities and residual risks. This paper contributes to these knowledge gaps.