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Which clippings match 'Interrelationships' keyword pg.1 of 1
25 FEBRUARY 2016

Universal resilience patterns in complex networks

"Resilience, a system's ability to adjust its activity to retain its basic functionality when errors, failures and environmental changes occur, is a defining property of many complex systems. Despite widespread consequences for human health, the economy and the environment, events leading to loss of resilience—from cascading failures in technological systems to mass extinctions in ecological networks—are rarely predictable and are often irreversible. These limitations are rooted in a theoretical gap: the current analytical framework of resilience is designed to treat low-dimensional models with a few interacting components, and is unsuitable for multi-dimensional systems consisting of a large number of components that interact through a complex network. Here we bridge this theoretical gap by developing a set of analytical tools with which to identify the natural control and state parameters of a multi-dimensional complex system, helping us derive effective one-dimensional dynamics that accurately predict the system's resilience. The proposed analytical framework allows us systematically to separate the roles of the system's dynamics and topology, collapsing the behaviour of different networks onto a single universal resilience function. The analytical results unveil the network characteristics that can enhance or diminish resilience, offering ways to prevent the collapse of ecological, biological or economic systems, and guiding the design of technological systems resilient to both internal failures and environmental changes."

(Jianxi Gao, Baruch Barzel & Albert-László Barabási, 17 February 2016, Nature)



2016Albert-Laszlo Barabasi • Baruch Barzel • biological systems • cascading failure • Cognitive Visualization Lab • complex networkscomplex systems • critical phenomena • data visualisationdroughtecological balance • ecological networks • ecological sustainability • ecological systems • ecosystemenvironmental changeenvironmental statisticsextinctionglobal issuesIBM • IBM Watson • interrelationships • irreversible change • Jianxi Gao • loss of resilience • Mauro Martino • multidimensional systems • network dynamics • network earth • network ecologynetwork model • network relationships • networked interaction • nonlinear phenomena • Northeastern University • one-dimensional dynamics • phase transitions • resiliencespeciationsustainability • system collapse • technological systems • universal resilience function • universal resilience patterns • visual explanations • visual representation graphicallyvisual representations of scientific conceptsvisualising data • wildfire


Simon Perkins
21 JULY 2013

Validity Concepts in Research: an Integrative Approach

"Research involves drawing upon elements and relations from three basic domains: (a) a conceptual domain, which includes concepts and relations considered in abstract form, (b) a methodological domain, which includes instruments and techniques for obtaining observations and for relating sets of observations; and (c) a substantive domain, which includes events, processes, and phenomenon in the 'real' world.

Any research project must contain elements and relations from each of these domains. Thus, it is not possible to conduct research, without some method, some concept (or set of concepts), and some event or process. Elements and relations from each of these domains are not all combined simultaneously. Research generally proceeds by combining two of the domains, to form some structure, and subsequently incorporating (i.e., integrating) the third domain with the developed structure. With three domains, there are at least three patterns for combining the domains. Those three ways represent three distinct research paths; and they pose different advantages and limitations for the investigator."

(David Brinberg, 1982)

David Brinberg (1982) ,"Validity Concepts in Research: an Integrative Approach", in NA – Advances in Consumer Research Volume 09, eds. Andrew Mitchell, Ann Abor, MI : Association for Consumer Research, Pages: 40–44.


1982 • abstract form • academic research • advantages and limitations • analytic technique • Association for Consumer Research • concepts and ideas • concepts and relations • conceptual domain • David Brinberg • events • forms of validity • instruments and techniques • integrative scholarshipintegrative techniqueinterrelationships • investigator • knowledge domain • measuring device • methodological domain • obtaining observations • phenomenon • processes • real world • relating observations • relationsresearch designresearch method • research paths • research processresearch projectresearch strategiesresearcher • substantive domain • theory buildingUniversity of Marylandvalid knowledgevalid scholarshipvalidity


Simon Perkins

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