92 research outputs found
Assessing the efficiency and the criticality of the elements belonging to a complex territorial system subject to natural hazards
International audienceThe effects of natural hazards can be mitigated by the use of proper "pre-event" interventions on "key" elements of the territory, that is on elements that are mostly vulnerable to a given catastrophic scenario and whose loss of functionality can cause damages on people, property and environment. In this respect, methodologies and tools should be studied to support decision makers in the analysis of a territory, in order to point out such elements. In this work, vulnerability is taken into account under two aspects: "physical vulnerability", which measures the propensity of a territorial element to suffer damage when subject to an external stress corresponding to the occurrence of a natural phenomenon; "functional vulnerability", which measures the propensity of a territorial element to suffer loss in functionality, even when that is caused by the loss of functionality of other territorial elements. In the proposed modeling approach, vulnerability is represented through the use of a graph-based formalization. A territorial system is represented as a complex set of elements or sub-systems. Such elements have differentiated and dedicated functions, and they may be functionally interconnected among them. In addition, vulnerability is defined through the use of two different variables, namely the criticality and the efficiency. Focusing the attention on the temporal phases corresponding to the occurrence of a calamitous event, the first one measures the service demand of an element, whereas the efficiency is a measure of the service that can be offered by such an element. The approach presented is largely independent from the natural risk considered. Besides, the tools introduced for the vulnerability analysis of the territorial system can also be used to formalize decision problems relevant to the location of the available resources for emergency management. A specific case study pertaining to the hydrological risk in the Val di Vara area (Italy) is presented
Natural risk assessment and decision planning for disaster mitigation
International audienceIn this paper, decisional models are introduced aiming at defining a general framework for natural disaster mitigation. More specifically, an integrated approach based on system modelling and optimal resource assignment is presented in order to support the decision makers in pre-operational and real-time management of forest fire emergencies. Some strategies for pre-operative and real time risk management will be described and formalized as optimal resource assignment problems. To this end, some models capable to describe the resources dynamics will be introduced, both in pre-operative phase and in real-time phase
A Gis-Based, Rapid And Holistic Flash Flood Risk Assessment For Emergency Management Services
A multi-element psychosocial intervention for early psychosis (GET UP PIANO TRIAL) conducted in a catchment area of 10 million inhabitants: study protocol for a pragmatic cluster randomized controlled trial
Multi-element interventions for first-episode psychosis (FEP) are promising, but have mostly been conducted in non-epidemiologically representative samples, thereby raising the risk of underestimating the complexities involved in treating FEP in 'real-world' services
Assessing the efficiency and the criticality of the elements belonging to a complex territorial system subject to natural hazards
The effects of natural hazards can be mitigated by the use of proper 'pre-event' interventions on 'key' elements of the territory, that is on elements that are mostly vulnerable to a given catastrophic scenario and whose loss of functionality can cause damages on people, property and environment. In this respect, methodologies and tools should be studied to support decision makers in the analysis of a territory, in order to point out such elements. In this work, vulnerability is taken into account under two aspects: 'physical vulnerability', which measures the propensity of a territorial element to suffer damage when subject to an external stress corresponding to the occurrence of a natural phenomenon; 'functional vulnerability', which measures the propensity of a territorial element to suffer loss in functionality, even when that is caused by the loss of functionality of other territorial elements. In the proposed modeling approach, vulnerability is represented through the use of a graph-based formalization. A territorial system is represented as a complex set of elements or sub-systems. Such elements have differentiated and dedicated functions, and they may be functionally interconnected among them. In addition, vulnerability is defined through the use of two different variables, namely the criticality and the efficiency. Focusing the attention on the temporal phases corresponding to the occurrence of a calamitous event, the first one measures the service demand of an element, whereas the efficiency is a measure of the service that can be offered by such an element. The approach presented is largely independent from the natural risk considered. Besides, the tools introduced for the vulnerability analysis of the territorial system can also be used to formalize decision problems relevant to the location of the available resources for emergency management. A specific case study pertaining to the hydrological risk in the Val di Vara area (Italy) is presented
Assessing the efficiency and the criticality of the elements belonging to a complex territorial system subject to natural hazards
Assessing the efficiency and the criticality of the elements belonging to a complex territorial system subject to natural hazards
Abstract. The effects of natural hazards can be mitigated
by the use of proper \u201cpre-event\u201d interventions on \u201ckey\u201d elements
of the territory, that is on elements that are mostly
vulnerable to a given catastrophic scenario and whose loss
of functionality can cause damages on people, property and
environment. In this respect, methodologies and tools should
be studied to support decision makers in the analysis of a territory,
in order to point out such elements. In this work, vulnerability
is taken into account under two aspects: \u201cphysical
vulnerability\u201d, which measures the propensity of a territorial
element to suffer damage when subject to an external stress
corresponding to the occurrence of a natural phenomenon;
\u201cfunctional vulnerability\u201d, which measures the propensity of
a territorial element to suffer loss in functionality, even when
that is caused by the loss of functionality of other territorial
elements. In the proposed modeling approach, vulnerability
is represented through the use of a graph-based formalization.
A territorial system is represented as a complex set of
elements or sub-systems. Such elements have differentiated
and dedicated functions, and they may be functionally interconnected
among them. In addition, vulnerability is defined
through the use of two different variables, namely the criticality
and the efficiency. Focusing the attention on the temporal
phases corresponding to the occurrence of a calamitous
event, the first one measures the service demand of an element,
whereas the efficiency is a measure of the service that
can be offered by such an element. The approach presented
is largely independent from the natural risk considered. Besides,
the tools introduced for the vulnerability analysis of
the territorial system can also be used to formalize decision
problems relevant to the location of the available resources
for emergency management. A specific case study pertaining
to the hydrological risk in the Val di Vara area (Italy) is
presented
Analyse de la vuln\ue9rabilit\ue9 d'un syst\ue8me territorial complexe aux al\ue9as naturels
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