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The topic of the paper is a description of basic elements of the philosophy of un/natural disasters generally, and specifically basic elements of multiple simultaneous un/natural disasters which is motivated by a series of disasters that hit Croatia all over 2020. The topic is presented in the following way: in the first part, case of Croatia 2020 is described in short; in the second part, elements of the philosophy of un/natural disasters are described; and based on the first and second part in the third part, the possibility of the philosophy of multiple simultaneous un/natural disasters which seem to be applicable to the case of Croatia 2020 is described. Elements of philosophy that are described are ontology, epistemology, a theory of action, and ethics. The purpose of the paper is to research the possibility of clarification of basic philosophical concepts in the context of disasters, namely existence-in, appearance/reality-in, knowledge-of, certainty-in, human action-in, habits-in, and morality and ethics of disasters. Research limitations relate mostly to conceptual-morphological research that hugely relies on facts of the case and on statistical and scientific data on disasters.

This paper aims to describe the phenomenon of multiple simultaneous un/natural disasters (MSDs). This study also aims to describe the importance and contribution of philosophy in describing MSDs warning and alarming systems.

The paper summarizes topics in the philosophy of MSDs that were covered in detail in previous research in order to continue with the topic of the philosophy of MSDs alarming and warning. A practical solution to conceptual paradoxes is researched by means of conceptual-morphological analysis.

The paper proposes a conceptual idea for MSDs alarming system which is its main topic; namely, it offers a conceptual solution to a series of practical-conceptual paradoxes that occur before, during and after MSDs.

This is only a conceptual research, and it does not deal with particular technological solutions.

The proposed solution of this research could be implemented in various warning and alarm systems.

The proposed concept of a universal alarm system for MSDs was not previously proposed.

“Trouble in the Land of Oz.” That is what started it all.

This study aims to minimize the expected arrival time of relief vehicles to the affected areas, considering the destruction of potential routes and disruptions due to disasters. In relief operations, required relief items in each affected area and disrupted routes are considered as uncertain parameters. Additionally, for a more realistic consideration of the situations, it is assumed that the demand of each affected area could be met by multiple vehicles and distribution centers (DCs) and vehicles have limited capacity.

The current study developed a two-stage stochastic programming model for the distribution of relief items from DCs to the affected areas. Locating the DCs was the first-stage decisions in the introduced model. The second-stage decisions consisted of routing and scheduling of the vehicles to reach the affected areas.

In this paper, 7th district of Tehran was selected as a case study to assess the applicability of the model, and related results and different sensitivity analyses were presented as well. By carrying out a simultaneous sensitivity analysis on the capacity of vehicles and the maximum number of DCs that can be opened, optimal values for these parameters were determined, that would help making optimal decisions upon the occurrence of a disaster to decrease total relief time and to maximize the exploitation of available facilities.

The contributions of this paper are as below: presenting an integrated model for the distribution of relief items among affected areas in the response phase of a disaster, using a two-stage stochastic programming approach to cope with route disruptions and uncertain demands for relief items, determining location of the DCs and routing and scheduling of vehicles to relief operations and considering a heterogeneous fleet of capacitated relief vehicles and DCs with limited capacity and fulfilling the demand of each affected area by more than one vehicle to represent more realistic situations.

Optimized three-dimensional (3D) fracture networks are crucial for multistage hydrofracturing. To better understand the mechanisms controlling potential disasters as well as to predict them in 3D multistage hydrofracturing, some governing factors, such as fluid injection-induced stratal movement, compression between multiple hydraulic fractures, fracturing fluid flow, fracturing-induced microseismic damaged and contact slip events, must be properly simulated via numerical models. This study aims to analyze the stratal movement and microseismic behaviours induced by multistage propagation of 3D multiple hydraulic fractures.

Adaptive finite element–discrete element method was used to overcome the limitations of conventional finite element methods in simulating 3D fracture propagation. This new approach uses a local remeshing and coarsening strategy to ensure the accuracy of solutions, reliability of fracture propagation path and computational efficiency. Engineering-scale numerical models were proposed that account for the hydro-mechanical coupling and fracturing fluid leak-off, to simulate multistage propagation of 3D multiple hydraulic fractures, by which the evolution of the displacement, porosity and fracture fields, as well as the fracturing-induced microseismic events were computed.

Stratal movement and compression between 3D multiple hydraulic fractures intensify with increasing proximity to the propagating fractures. When the perforation cluster spaces are very narrow, alternate fracturing can improve fracturing effects over those achieved via sequential or simultaneous fracturing. Furthermore, the number and magnitude of microseismic events are directly proportional to the stratal movement and compression induced by multistage propagation of fracturing fracture networks.

Microseismic events induced by multistage propagation of 3D multiple hydraulic fractures and perforation cluster spaces and fracturing scenarios that impact the deformation and compression among fractures in porous rock matrices are well predicted and analyzed.

Community currency (CC) is used as a tool for reviving local communities by promoting economic growth and facilitating the formation of social capital. Although the Japanese CC movement has stagnated since mid-2005, a new experiment, Fukkou Ouen Chiiki Tsuka (CC for supporting disaster recovery), was introduced across disaster-damaged areas after the Great East Japan Earthquake and tsunami of March 2011. Previous studies assessing the role of CC in these earthquake-damaged areas are rare; the purpose of this paper is to examine the micro processes of community rebuilding that underlie the transactional networks mediated by one of the experiments, Domo, in Kamaishi.

Using transactional records capturing residents’ CC activities during the five-month pilot period before actual implementation of Domo simultaneous investigation for empirical network analysis techniques identify the network configuration dynamics representing the multiple observed forms of social capital in this disaster-affected local community.

This study of the five-month pilot for the Domo system revealed: intensive dependence on the coordinating role of core members (i.e. the creation of weak ties), a lack of balanced support among members and the resulting uni-directional transactions (i.e. the avoidance of generalized exchanges), and the reinforcement of previous transactional ties via reciprocation or transitive triads (i.e. the formation of strong ties).

This study provides guidance for practitioners, researchers, and policy makers on how community residents’ engagement in CC activities could function as a potential tool for generating positive socio-economic effects for local communities in disaster areas.

This paper explores the building blocks of risk governance systems that are equipped to manage systemic risk in the 21st century. Whilst approaches to risk governance have been evolving for more than a decade, recent disasters have shown that conventional risk management solutions need to be complemented with a multidimensional risk approach to govern complex risks and prevent major, often simultaneous, crises with cascading and knock-on effects on multiple, interrelated systems at scale. The paper explores which risk governance innovations will be essential to provide the enabling environment for sustainable development that is resilient to interrelated shocks and risks.

This interdisciplinary literature review-based thought piece highlights how systemic risk is socially constructed and identifies guiding principles for systemic risk governance that could be actionable by and provide entry points for local and national governments, civil society and the private sector. particularly in low- and middle-income countries (LMIC), in a way that is relevant to the achievement of the 2030 Agenda for Sustainable Development. This considers preparedness, response and resilience, but more importantly prospective and corrective risk control and reduction strategies and mechanisms. Only when systemic risk is framed in a way that is relevant to the political agendas of countries will it be possible to begin a dialogue for its governance.

The paper identifies opportunities at the global, national and local levels, which together draw up a viable framework for systemic risk governance that (1) embraces the governance of sustainability and resilience through a strengthened holistic governance framework for social, economic, territorial and environmental development; (2) improves managing conventional risk to ultimately manage systemic risks; (3) fosters the understanding of vulnerability and exposure to gain insight into systemic risk; (4) places a greater focus on prospective risk management; (5) manages systemic risk in local infrastructure systems, supply chains and ecosystems; (6) shifts the focus from protecting privatized gains to managing socialized risk.

The choices and actions that societies take on the path of their development are contributing intentionally or unintentionally to the construction of systemic risks, which result in knock-on effects among interconnected social, environmental, political and economic systems. These risks are manifesting in major crises with cascading effects and a real potential to undermine the achievement of the SDGs, as COVID-19 is a stark reminder of. This paper offers the contours of a new risk governance paradigm that is able to navigate the new normal in a post-COVID world and is equipped to manage systemic risk.

Multi-well hydrofracturing is a key technology in engineering, and the evaluation, control and optimization of the fracturing network determine the recovery rate of unconventional oil and gas production. In engineering terms, altering well spacing and perforation initiation sequences changes fracture propagation behavior. Fracture propagation can result in fracture-to-fracture and well-to-well interactions. This may be attributed to the interference between fractures caused by squeezing of the reservoir strata. Meanwhile, the stratal movement caused by the propagation of the fractures may lead to either the secondary fracturing of wells with primary fractures or perforation to begin fracturing. Besides, the stratal compression and squeeze of multi-well hydrofracturing will cause earthquakes; the fracture size is different owing to the different fracturing scenarios, and the occurrence of induced microseismic events is still unknown; microseismic events also affect fracture orientation and deflection. If the mechanism of the above mechanical behavior cannot be clarified, optimizing the fracture network and reduce the induced microseismic disaster becomes difficult.

In this study, combined finite element-discrete element models were used to simulate the multi-well hydrofracturing. Numerical cases compared the fracture network, dynamic stratal movement and microseismic events at 50, 75 and 100 m well spacings, respectively, and varying initiation sequence of multiple horizontal wells.

From the results, fracture propagation in multi-well hydrofracturing may simulate the propagation and deflection of adjacent fractures and induce fracture-to-fracture and well-to-well interactions. As the well spacing increases, the effect of fracturing-induced stratal movement and squeezing deformation decrease. In alternate fracturing, starting from a well located in the middle can effectively reduce the influence of stratal movement on fracturing, and the fracturing scenario with cross-perforation can minimize the influence of stratal movement. The stratal movement between multiple wells is positively correlated to microseismic events, which behaviors can be effectively weakened by reducing the strata movement.

The fracture network, thermal-hydro-mechanical coupling, fracturing-induced stratal movement and microseismic events were analyzed. This study analyzed the intersection and propagation behavior of fractures in multi-well hydrofracturing, which can be used to evaluate and study the mechanism of hydrofracturing fracture network propagation in multiple horizontal wells and conduct fracture optimization research to form an optimized hydrofracturing scheme by reasonably arranging the spacing between wells and initiation sequences of perforation clusters.

This paper aims to develop a multi-hazard risk assessment method based on probability theory and a set of economic, social and environmental indicators, which considers the increase in hazards when they occur concurrently or consecutively.

Disaster risk assessment generally considers the impact and vulnerability of a single hazard to the affected location/object without considering the combination of multiple hazards occurring concurrently or consecutively. However, disasters are often closely related, occurring in combination or at the same time. Probability theory was used to assess multi-hazard, and a matrix method was used to assess the interaction of hazard vulnerabilities.

The results of the case study for the Mid-Central Coastal Region show that the proportions of districts at a very high class of multi-hazard, multi-vulnerabilities and multi-hazard risk are 81%, 89% and 82%, respectively. Multi-hazard risk level tends to decrease from North to South and from East to West. A total of 100% of coastal districts are at high to very high multi-hazard risk classes. The research results could assist in the development of disaster risk reduction programs towards sustainable development and support the management to reduce risks caused by multi-hazard.

The multi-risk assessment method developed in this study is based on published literature, allowing to compare quantitatively multiple risk caused by multi-hazard occurring concurrently or consecutively, in which, a relative increase in hazard and vulnerability is considered. The method includes the assessment of three components of disaster risk including multi-hazard, exposure and multi-vulnerability. Probability and Copula theories were used to assess multi-hazard, and a matrix method was used to assess the interaction intensity of multi-vulnerabilities in the system.

The purpose of this paper is to understand the interlinkages between corporate social responsibility (CSR) and crowdfunding in the context of disaster relief operations (DRO). It intends to explore how information quality moderates the relationship of CSR and crowdfunding to achieve financial and social stability. The study also controls variables such as type of disaster, size of the firm and sector to which the firms belong while drawing implications.

The study collects empirical data in an Indian context through a structured questionnaire. The respondents belong to organizations which made a financial contribution toward DRO during the past decade (2008–2018). The sample size for data analysis is 232 responses belonging to different industries like plastic, chemical, textile and apparel, automotive parts and electronics, and construction. The study employs partial least squares structural equation modeling for testing the hypothesis.

Results indicate a positive effect of CSR activities on donation-based crowdfunding to achieve financial and social normalcy in a DRO. CSR can thus be used as an alternate way to support DRO. Results also reveal that quality of information positively impacts the relationship between crowdfunding and social aid as well as financial aid offered to the victims of the disasters. It is further observed that the type of disaster accounts for the inflow and frequency of funds made by companies as a part of their CSR activities.

The study restricts its analysis to CSR contributions made by Indian firms for DRO in an Indian context. While the study is centered in an Indian context, it holds strong implications by offering guidelines and framework for integrating funds of the government, CSR contributions of companies and donations made by citizens. The outcome also provokes thoughts on testing the results with multiple disasters across the globe in order to validate the findings and possibly extend them.

The approach of the study holds a unique slot in understanding concepts relating to CSR, crowdfunding and information science literature in the context of DRO. The study offers unique contribution in making the readers aware how CSR funds, when guided through a donation-based crowdfunding platform can help achieve social and financial aid for the victims of natural disaster.