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BEGIN:VEVENT
DTSTAMP:20261020T233839Z
LAST-MODIFIED:20141126T162707Z
DTSTART:20141202T180000Z
DTEND:20141202T190000Z
UID:event1369@bu.edu
URL:http://physics.bu.edu/internal/events/show/1369
SUMMARY:Spontaneous Recovery and Metastability in Single and Interdependent
	 Networks 
DESCRIPTION:Featuring Antonio Majdandzic\n\nPart of the Departmental Semina
	rs.\n\nPhD Committee: H.E.Stanley\, Lawrence Sulak\, Rama Bansil\, William 
	Skocpol\, Shlomo Havlin/Irena Vodenska.\n\nAbstract:\nMany complex systems 
	can be described as networks consisting of units (nodes) connected with lin
	ks. Examples range from biology\, to transportation and finance. Much resea
	rch has been carried out on exploring the vulnerability of such network sys
	tems. Of particular interest are abrupt dynamic events that cause networks 
	to irreversibly fail. However\, in many real-world phenomena such as brain 
	seizures in neuroscience or sudden market crashes in finance\, after an ina
	ctive period of time a significant part of the damaged network is able to b
	ecome spontaneously active again. The process often occurs repeatedly. To m
	odel this dynamic of network recovery in both single and interdependent net
	works\, we examine the effect of local node recoveries and stochastic conti
	guous spreading and find that they can lead to the emergence of macroscopic
	 phase-flipping phenomena between different levels of activity. We study ph
	ase diagrams of single and interdependent networks. The phase diagram gets 
	exponentially complicated with the increasing number of networks in interac
	tion. In interdependent networks\, knowing and understanding the phase diag
	ram has an immediate practical implication; it enables us to find the optim
	al strategy for repairing interconnected networks that are fully or partial
	ly damaged. To support the model\, we study an example of a real interactin
	g financial network\, where we find evidence of fast dynamical transitions 
	between well defined metastable states\, in agreement with predictions of o
	ur model.\n\n![Antonio](/resources/event-image/1369/49e2f42_small)
LOCATION:PRB 365\, 3 Cummington Mall\, 02215
STATUS:CONFIRMED
CLASS:PUBLIC
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