1,720,979 research outputs found
Il Mulino della Corte a Venafro: storia e struttura della fabbrica
No full textGli autori ricostruiscono la storia e la struttura del Mulino della Corte a Venafro, esempio di particolare interesse per l'archeologia industriale e rurale in Campania: allo studio analitico fa seguito una precisa ipotesi di recupero
Il Mulino della Corte a Venafro: storia e struttura della fabbrica
No full textGli autori ricostruiscono la storia e la struttura del Mulino della Corte a Venafro, esempio di particolare interesse per l'archeologia industriale e rurale in Campania: allo studio analitico fa seguito una precisa ipotesi di recupero
Organizational Model of a Hospital System
No full textThe capacity and the dynamic response of a hospital network has been estimated using an organizational
metamodel that is able to incorporate the influence of facility damage of structural and nostructural
components on the organizational system. The waiting time of a patient before receiving treatment
is selected as an aggregated function describing the global functionality of technical and organizational aspects
and it is used to evaluate the seismic resilience of the hospital network. The metamodel of a single hospital
has been used to evaluate the resilience of a hospital network of two hospitals in presence of an Operative
Center, including the damage of the hospital buildings and the roadway system
Seismic rehabilitation of cultural heritage masonry buildings with unbonded fiber reinforced elastomeric isolators (U-FREIs) – A case of study
Full text linkIn order to assess the structural behavior and to evaluate the seismic vulnerability of masonry structuresof relevant historical and artistic significance, which is a widespread building type in Italy and in the world,an historical masonry church is analyzed under earthquake loading. Linear and non-linear analyses areperformed on the finite element models of the structure. From these analyses it is pointed out that thestructure does not behave elastically in its existing condition even when subjected to the frequent designearthquake (81% probability of being exceeded over 50 years). Two traditional rehabilitation methods arestudied: the placement of a rigid diaphragm which connects the top of the masonry walls only enclosingthe church entrance area and the placement of a rigid diaphragm which connects the tops of all masonrywalls. None of the traditional method is sufficient for the structure to survive basic design earthquake(10% probability of being exceeded over 50 years). Hence an advanced seismic retrofit solution usinginnovative carbon fiber reinforced elastomeric isolators is proposed. The proposed intervention consistsin the installation of six Unbonded Fiber-Reinforced Elastomeric Isolators (U-FREI) and six Flat SurfaceSliders (FSS) as passive protective devices besides the placement of a rigid diaphragm which connects thetops of all masonry walls. The process of installation of the devices is illustrated. The use of the proposedsolution leads to a remarkable enhancement of the seismic response capacities of the structure; indeeda general elastic response under the Basic Design Earthquake (BDE) is attained
Quantification of Disaster Resilience of Health Care Facilities
No full textThis report presents concepts of disaster resilience of constructed infrastructure and proposes a methodology for its quantitative evaluation. A unified terminology framework is proposed and implemented for resilience evaluation of health care facilities subjected to earthquakes. The evaluation of disaster resilience is based on non-dimensional analytical functions describing variations of functionality that consider direct and indirect losses and the recovery path. The recovery path is estimated by using either simplified recovery functions or complex organizational and socio-political models. Due to the uncertain nature of structural behavior and functional limit states, hospital losses are described in terms of fragility functions. The framework for resilience quantification is formulated and exemplified for an existing medical facility and a hospital network. In addition, an organizational model describing the functionality of the emergency service of a hospital is developed and implemented. A hybrid simulation and analytical metamodel is developed to estimate, in real time, the hospital functional capacity and its dynamic response, accounting for the influence of structural and nonstructural physical damage on the hospital organization. The proposed metamodel covers a range of hospital configurations, taking into account hospital resources, operational efficiency and possible existence of an emergency plan, maximum capacity, and behavior in saturated and over-capacity conditions. The sensitivity of the metamodel to variations of these parameters is also investigated. Finally, a hospital network is modeled to study the effects on disaster resilience of collaborative operations of health care facilities. The damage to the network, the patients’ transportation time, and the distance among facilities are also considered in the model. The proposed resilience framework captures the effects of disasters, and the effects of preparedness and restoration, and therefore, constitutes a valuable tool for decision makers, designers, and engineering practitioners
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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