Complexity science and intentional systems

In their position paper entitled "Towards a new, complexity science of learning and education", Jorg et al. (2007) argue that educational research is in crisis. In their opinion, the transdisciplinary and interdiscursive approach of complexity science with its orientation towards self-organization, emergence, and potentiality provides new modes of inquiry, a new lexicon and assessment practices that can be used to overcome the current crisis. In this contribution, I elaborate on how complexity science can further be developed for understanding the dynamics of intentions and the communication of meaning as these are central to the social-scientific enterprise

Analysis of ischaemic crisis using the informational causal entropy-complexity plane

In the present work, an ischaemic process, mainly focused on the reperfusion stage, is studied using the informational causal entropy-complexity plane. Ischaemic wall behavior under this condition was analyzed through wall thickness and ventricular pressure variations, acquired during an obstructive flow maneuver performed on left coronary arteries of surgically instrumented animals. Basically, the induction of ischaemia depends on the temporary occlusion of left circumflex coronary artery (which supplies blood to the posterior left ventricular wall) that lasts for a few seconds. Normal perfusion of the wall was then reestablished while the anterior ventricular wall remained adequately perfused during the entire maneuver. The obtained results showed that system dynamics could be effectively described by entropy-complexity loops, in both abnormally and well perfused walls. These results could contribute to making an objective indicator of the recovery heart tissues after an ischaemic process, in a way to quantify the restoration of myocardial behavior after the supply of oxygen to the ventricular wall was suppressed for a brief period.Fil: Legnani, Walter. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires; Argentina. Universidad Nacional de Lanús; ArgentinaFil: Traversaro Varela, Francisco. Instituto Tecnológico de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Redelico, Francisco Oscar. Hospital Italiano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes; ArgentinaFil: Cymberknop, Leandro Javier. Instituto Tecnologico de Buenos Aires. Departamento de Bioingenieria; Argentina. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires; ArgentinaFil: Armentano, Ricardo Luis. Universidad Tecnológica Nacional. Facultad Regional Buenos Aires; Argentina. Instituto Tecnologico de Buenos Aires. Departamento de Bioingenieria; ArgentinaFil: Rosso, Osvaldo Aníbal. Universidad de los Andes; Chile. Universidade Federal de Alagoas; Brasil. Hospital Italiano; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

The economics of currency crises and contagion: an introduction

Two theories of the causes of currency crises prevail in the economic literature. The first traces currency instability to countries' structural imbalances and weak policies; the second identifies arbitrary shifts in market expectations as the principal source of instability. The authors of this article contend that only a synthesis of these theories can capture the complexity of the 1997-98 Asian currency crisis. In their view, the crisis resulted from the interaction of structural weaknesses and volatile international capital markets. The authors also cite two other factors that contributed to the severity of the Asia crisis: inadequate supervision of the banking and financial sectors and the rapid transmission of the crisis across countries linked by trade and common credit sources.Financial crises ; Financial crises - Asia ; Asia

Too much right can make a wrong: Setting the stage for the financial crisis

The financial crisis that started in 2007 exposed a number of flaws in the financial system. Many of these flaws were associated with financial instruments that were issued by the shadow banking system, especially securitized assets. The volume and complexity of securitized assets grew rapidly during runup to the financial crisis that began in 2007. The paper discusses how the financial crisis can be viewed as a possible but logical outcome of a system where investors are overconfident, busy, and investing other peoples’ money and intermediaries are set up to take advantage of investors’ tendencies. The investor-intermediary risk cycle in this crisis is common to other crises. However, there are a number of factors that may have made the 2007 crisis more severe. Among them are the length of the pre-crisis period, the shift from financial intermediaries to the shadow banking system, the increasing interconnectedness among financial firms, and the increased leverage at some financial firms.Financial crises

Crisis bifurcations in plane Poiseuille flow

Many shear flows follow a route to turbulence that has striking similarities to bifurcation scenarios in low-dimensional dynamical systems. Among the bifurcations that appear, crisis bifurcations are important because they cause global transitions between open and closed attractors, or indicate drastic increases in the range of the state space that is covered by the dynamics. We here study exterior and interior crisis bifurcations in direct numerical simulations of transitional plane Poiseuille flow in a mirror-symmetric subspace. We trace the state space dynamics from the appearance of the first three-dimensional exact coherent structures to the transition from an attractor to a chaotic saddle in an exterior crisis. For intermediate Reynolds numbers, the attractor undergoes several interior crises, in which new states appear and intermittent behavior can be observed. The bifurcations contribute to increasing the complexity of the dynamics and to a more dense coverage of state space

Introduction Special Issue JEDC Crises and Complexity

In November 2011 an EU FP7 interdisciplinary collaborative project Complexity Research Initiative for Systemic InstabilitieS (CRISIS) started to develop a complexity interactions agent-based model for the European financial-economic crisis. This special issue on Crises and Complexity reflects some of the ongoing work of this interdisciplinary collaboration between economists, physicists, computer scientists, etc. that has been presented and discussed at various CRISIS workshops in Milan, London, Paris and Leiden throughout 2012-2014

Nobody Said IT Was Easy - Managing Government-Initiated Information Systems in Addressing and Preparing for Health Crises

COVID-19 served to teach governments many painful lessons about their pitfalls and challenges in managing public health crises. Although both practitioners and academics have been aware that crisis information systems (CIS) constitute a valuable tool for crisis prevention and management, their implementation to counteract COVID-19 lagged by months. To analyze this crisis management mismatch, in this paper, we examine and identify the structural challenges and shortcomings of government-initiated crisis management through CIS. This paper analyzes two CIS projects tackling the COVID-19 crisis, funded by the German government. Drawing on a complexity-lens and the NASSS-framework, key shortcomings are identified. We derive propositions for future CIS projects to enable crisis preparedness. Our outcomes suggest that adopting a complexity perspective in planning, initiating, and developing governmental CIS provides a promising avenue for achieving successful crisis management. We contribute to literature by highlighting the suitability of the complexity-lens in health crises

Constant Capital and the Crisis in Contemporary Capitalism: Echoes from the Late Nineteenth Century

Because constant capital involves irreversible decisions, understanding this subject is essential for coming to grips with the complexity of the economy, especially crisis theory. This paper attempts to show how both Marx and late 19th century neoclassical economists in the United States realized that the relative growth of constant capital made competitive economies unsustainable.