The éToile Platform supports students aiming to participate in the ECCS14 - European Conference in Complex Systems, Lucca, Sept 22-26, 2014 ( http://eccs14.eu ). 10 registrations will be offered to students according to their contributions to the platform.
Master and PhD students, from any university, are invited to register in the platform and improve their reputation within the new éToile community.
Both ants and brains actually rely on two types of feedback, held in a delicate balance: negative (or inhibitory) feedback, and positive (or excitatory) feedback. “Negative feedback tends to cause stability. Positive feedback tends to cause runaway behavior,” said Tomer Czaczkes, an ant biologist at the University of Regensburg in Germany. “These two simple rules make something very powerful.”
This interview with Alessandro Vespignani is about the future of modelling and forecasting of epidemics and is part of the Futurium Talking Futures interview series. More information is available here:
There is mounting evidence that the heart is a system onto itself and that it is intimately intertwined with the nervous and endocrine system residing within its borders. The capacity of self-organized systems to adapt is embodied in the functional organization of the intrinsic control mechanisms. How these regulatory subsystems communicate and how uncoupling of the hierarchical organization results in loss of adaptive "fitness"remains a challenge in human biology. The principles by which "emergent properties" and functional order of a self-organizingsystem, such as the heart, achieve (homeo)dynamic stability provide a non-reductionist framework for understanding how biological system adapts to imposed internal and external stresses, e.g., ischemia, organ/tissue transplantation. In particular, the newly emergent dynamics of cardiac rhythm observed after the heart is transplanted may reflect a more stable,versatile and adaptive (as per "law of requisite variety") bipartite whole. The integrative action of the living organism can not be gotten from their concatenated fractions but is evolved "relationally", i.e., it emanates from emergent internal requirements of the constitutive parts.
J. Yasha Kresh, Igor Izrailtyan, Andrew S. Wechsler Depts. of Cardiothoracic Surgery and Medicine MCP-Hahnemann School of Medicine / Drexel University, Philadelphia, PA
In this workspace, you can submit your proposal on what you think should be done to address global climate change. Try out new ideas, connect with other members, recruit collaborators, share your work, engage support, and invite a global community to review and help develop your proposal. This is just to get you started. When we release the 2014 round of Climate CoLab contests, you will be able to move your proposals from here to any relevant contest. All submissions are welcome: technologies, policies, products, public outreach campaigns, educational programs, economic models, community projects; new ideas or improvements on something that already exists; addressing climate change mitigation, adaptation, or geoengineering; local, regional, national, or global in scope.
This course will begin on January 6, 2014. If you are enrolled, you will receive email notification that the course has started. In this course you'll gain an introduction to the modern study of dynamical systems, the interdisciplinary field of applied mathematics that studies systems that change over time. Topics to be covered include: phase space, bifurcations, chaos, the butterfly effect, strange attractors, and pattern formation.
Introduction to Dynamical Systems and Chaos (Winter, 2014) Instructor: David Feldman
Nella vetrificazione, il processo nel quale il vetro allo stato liquido, raffreddandosi, diventa solido, l'insieme delle configurazioni possibili per le molecole ha una struttura frattale. Lo ha dimostrato un nuovo studio di fisica matematica i cui risultati sono stati confermati da una simulazione numerica
Complexity Institute's insight:
"In termini matematici, un frattale è uno oggetto geometrico dotato di una invarianza di scala: in pratica, esso sembra avere la stessa struttura a qualunque scala dimensionale lo si consideri. Le strutture frattali si ritrovano spesso in natura, e accomunano oggetti incredibilmente diversi tra loro, quali possono essere per esempio un broccolo romanesco, un tratto di costa e il bordo di una foglia."
Qualsiasi sistema vivente o sociale, se isolato dall’ambiente esterno, degrada, si decompone e scompare: dalle teorie dei sistemi complessi adattativi emerge un’analisi scientifica allarmante della crisi economica attuale.
The best way to lose weight is to eat less and exercise more. But as a strategy to combat obesity at the population level, this common-sense prescription is proving ineffective over the long term. Tailored treatment programmes that factor in the stresses and temptations of the real world, using insights from behavioural research, are showing some success. Drugs may also form part of the solution. Or perhaps the pharmaceutical option should be a last resort, and society should instead use the power of government regulation to encourage healthier lifestyle options.
Prospective organizers are invited to submit an informal proposal (less than 1000 words) by email to email@example.com with subject line 'Satellite proposal'. In the message header, please specify the satellite title, as well as the names and institutions of the members of the organizing committee. The proposal should include detailed information regarding the subjects covered by the satellite meeting and their relevance to the conference main tracks, relation to previous such meetings, duration of the meeting (from 1/2 day to 2 days), a preliminary schedule (including a list of invited speakers), paper selection standards, and a budget assessment*. Also bear in mind that all the participants to a satellite meeting *must be* registered to the main conference. The deadline for applications for satellite meetings has been now extended to *15 March 2014*. Official notification of acceptance will be sent on *30 March 2014* at the latest.
The Course Syllabi database contains a collection of annotated links to course syllabi related to complex systems. These syllabi can be searched according to class topics, institution, instructor, education level, and several other attributes. These syllabi will be useful for instructors developing their own courses on various topics, as well as serving as guides to people who want to learn on their own.
Adottando la strategia di coordinamento delle termiti, gruppi di robot-manovali, autonomi e interscambiabili, sono stati in grado di costruire strutture complesse senza aver bisogno di una precedente pianificazione complessiva delle azioni da eseguire per concludere con successo i diversi progetti
Conveying scientific content with accuracy and fluency takes practice and requires deep understanding of the concepts being conveyed. This depth of knowledge comes from internalizing information and constructing it into a form that is unique and coherent to the individual. Often in science classrooms there is little or no opportunity for students to practice this type of thinking, activities that we believe are fundamental to effective science communication. This article describes the use of haiku – a 17 syllable poem – as a means for students to convey neurobiological concepts in a succinct manner by forcing them to focus on the most salient features of the observed processes. In our assignments haiku writing was successfully paired with explanations of the students’ thought processes (Addiction course) or the scientific evidence to support claims (Neurodegenerative Disease course). We provide examples of student haiku and explanations as evidence of the power of this approach. The coupling of poetry and prose together create rich, accurate descriptions of scientific phenomena by encouraging higher-order thinking. Poetry writing can thus be used across the curriculum to forge comprehension of complex ideas in any discipline and to bridge the arts and the sciences.
Big Bang cosmology, chemical and biological evolutionary theory, and associated sciences have been extraordinarily successful in revealing and enabling us to understand the development of the universe from the Planck era to the present, as well as the emergence of complexity, life, and consciousness here on Earth. After briefly sketching this amazing story, and the key characteristics of nature, this paper will reflect on the different types and levels of causality involved -- stressing the important and pervasive role of highly differentiated and dynamic relationships and networks of relationships. Philosophical considerations build on and enrich scientific ones to probe these relationships. They also take us beyond the limits of strictly scientific methodology to consider and model -- however inadequately -- the ultimate sources of existence and order. This is the issue of creation, which introduces another very different -- and transcendent -- level of causality. We show that this is compatible with the -- and even essential to -- the causalities operative in nature, including those of quantum cosmology, if we acknowledge the limits of physics.
This lecture was delivered by George Ellis during the 16th Kraków Methodological Conference "The Causal Universe", May 17-18, 2012.
It is generally recognized that life is becoming more complex. This article analyzes the human social environment using the "complexity proﬁle," a mathematical tool for characterizing the collective behavior of a system. The analysis is used to justify the qualitative observation that complexity of existence has increased and is increasing. The increase in complexity is directly related to sweeping changes in the structure and dynamics of human civilization—the increasing interdependence of the global economic and social system, and the instabilities of dictatorships, communism and corporate hierarchies. Our complex social environment is consistent with identifying global human civilization as an organism capable of complex behavior that protects its components (us) and which should be capable of responding eﬀectively to complex environmental demands
Here is a suggestion of the components and sections that commonly go into a scientific paper. Note that none of the sections in between Introduction and References is strictly necessary: here you should adapt the scheme to your own subject and approach, and choose different headings for your sections. For example, theoretical papers will normally not have a "methodology" or "results" section, but are likely to have a more extensive review of the literature, and development of the arguments.
The global spread of epidemics, rumors, opinions, and innovations are complex, network-driven dynamic processes. The combined multiscale nature and intrinsic heterogeneity of the underlying networks make it difficult to develop an intuitive understanding of these processes, to distinguish relevant from peripheral factors, to predict their time course, and to locate their origin. However, we show that complex spatiotemporal patterns can be reduced to surprisingly simple, homogeneous wave propagation patterns, if conventional geographic distance is replaced by a probabilistically motivated effective distance. In the context of global, air-traffic–mediated epidemics, we show that effective distance reliably predicts disease arrival times. Even if epidemiological parameters are unknown, the method can still deliver relative arrival times. The approach can also identify the spatial origin of spreading processes and successfully be applied to data of the worldwide 2009 H1N1 influenza pandemic and 2003 SARS epidemic.
The Hidden Geometry of Complex, Network-Driven Contagion Phenomena Dirk Brockmann, Dirk Helbing