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networks and network weaving
How networks can transform our world
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How a well-adapted immune system is organized

The adaptive immune system uses the experience of past infections to prepare its limited repertoire of specialized receptors to protect organisms from future threats. What is the best way of doing this? Building a theoretical framework from first principles, we predict the composition of receptor repertoires that are optimally adapted to minimize the cost of infections from a given pathogenic environment. A naive repertoire can reach these optima through a biologically plausible competitive mechanism. Our findings explain how limited populations of immune receptors can self-organize to provide effective immunity against highly diverse pathogens. Our results also inform the design and interpretation of experiments surveying immune repertoires.


How a well-adapted immune system is organized
Andreas Mayer, Vijay Balasubramanian, Thierry Mora, and Aleksandra M. Walczak

http://dx.doi.org/10.1073/pnas.1421827112 ;


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Multifractal to monofractal evolution of the London's street network

We perform a multifractal analysis of the evolution of London's street network from 1786 to 2010. First, we show that a single fractal dimension, commonly associated with the morphological description of cities, does not su ce to capture the dynamics of the system. Instead, for a proper characterization of such a dynamics, the multifractal spectrum needs to be considered. Our analysis reveals that London evolves from an inhomogeneous fractal structure, that can be described in terms of a multifractal, to a homogeneous one, that converges to monofractality. We argue that London's multifractal to monofracal evolution might be a special outcome of the constraint imposed on its growth by a green belt. Through a series of simulations, we show that multifractal objects, constructed through di usion limited aggregation, evolve towards monofractality if their growth is constrained by a non-permeable boundary.


Multifractal to monofractal evolution of the London's street network
Roberto Murcio, A. Paolo Masucci, Elsa Arcaute, Michael Batty

http://arxiv.org/abs/1505.02760


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From Micro to Macro: Uncovering and Predicting Information Cascading Process with Behavioral Dynamics

Cascades are ubiquitous in various network environments. How to predict these cascades is highly nontrivial in several vital applications, such as viral marketing, epidemic prevention and traffic management. Most previous works mainly focus on predicting the final cascade sizes. As cascades are typical dynamic processes, it is always interesting and important to predict the cascade size at any time, or predict the time when a cascade will reach a certain size (e.g. an threshold for outbreak). In this paper, we unify all these tasks into a fundamental problem: cascading process prediction. That is, given the early stage of a cascade, how to predict its cumulative cascade size of any later time? For such a challenging problem, how to understand the micro mechanism that drives and generates the macro phenomenons (i.e. cascading proceese) is essential. Here we introduce behavioral dynamics as the micro mechanism to describe the dynamic process of a node's neighbors get infected by a cascade after this node get infected (i.e. one-hop subcascades). Through data-driven analysis, we find out the common principles and patterns lying in behavioral dynamics and propose a novel Networked Weibull Regression model for behavioral dynamics modeling. After that we propose a novel method for predicting cascading processes by effectively aggregating behavioral dynamics, and propose a scalable solution to approximate the cascading process with a theoretical guarantee. We extensively evaluate the proposed method on a large scale social network dataset. The results demonstrate that the proposed method can significantly outperform other state-of-the-art baselines in multiple tasks including cascade size prediction, outbreak time prediction and cascading process prediction.


From Micro to Macro: Uncovering and Predicting Information Cascading Process with Behavioral Dynamics
Linyun Yu, Peng Cui, Fei Wang, Chaoming Song, Shiqiang Yang

http://arxiv.org/abs/1505.07193


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RE-AMP Network, Explained - YouTube

A Network? Called RE-AMP? Tell me more. In this video, you'll learn how the RE-AMP Network came to be, what issue areas members focus on, and what we've acco...
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Decentralization as a mean of empowerment

Decentralization as a mean of empowerment | networks and network weaving | Scoop.it
Decentralization stems from the idea that local action enables impact and resilience of a communal ecosyste woven into a global network.
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Neighborland

Neighborland | networks and network weaving | Scoop.it
Neighborland empowers people to take action on local issues. We are providing residents, organizations,
and city agencies a powerful civic engagement platform designed to move community projects forward.
june holley's insight:

New apps for local networks are coming!

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▶ Network Theory: 15 Diffusion & Contagion - YouTube

Robustness and resilience are often defined in terms of a system’s capacity to maintain functionality in the face of external perturbations. In this model we...
june holley's insight:

Some important concepts discussed.

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How 3-D Printing Is Saving the Italian Artisan

How 3-D Printing Is Saving the Italian Artisan | networks and network weaving | Scoop.it
Italy’s craftsmen turn to a new tool in their competition with cheap products from China
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Cooperation Is What Makes Us Human

Cooperation Is What Makes Us Human | networks and network weaving | Scoop.it

Want to know what makes us stand apart from our ape cousins?

Cooperation—no other animal does it quite like us. Developmental psychologist Michael Tomasello explains why if chimps had a self-help bestseller, it would be titled, How to Outwit Rivals and Get More Fruit.



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Kenneth Mikkelsen's curator insight, April 26, 10:29 AM

What stands out is our exceptional capacity for generosity and mutual trust, those moments in which we act like no species that has ever come before us.


Anne Landreat's curator insight, April 28, 3:56 AM

2 million years ago, as climate swings altered the availability and competition for food, our ancestors were forced to put their heads together to survive. (...)

Human cooperation requires two or more people to have insight into each other’s intentions, formulate a joint goal, assume specific roles, and then coordinate their efforts. (...)

Ultimately, Tomasello’s research on human nature arrives at a paradox: our minds are the product of competitive intelligence and cooperative wisdom, our behavior a blend of brotherly love and hostility toward out-groups. Confronted by this paradox, the ugly side—the fact that humans compete, fight, and kill each other in wars—dismays most people, Tomasello says. And he agrees that our tendency to distrust outsiders—lending itself to prejudice, violence, and hate—should not be discounted or underestimated. But he says he is optimistic. In the end, what stands out more is our exceptional capacity for generosity and mutual trust, those moments in which we act like no species that has ever come before us.

 

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Ants Swarm Like Brains Think - Issue 23: Dominoes - Nautilus

Ants Swarm Like Brains Think - Issue 23: Dominoes - Nautilus | networks and network weaving | Scoop.it
Deborah Gordon spent the morning of August 27 watching a group of harvester ants foraging for seeds outside the dusty town of Rodeo,…
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Netvis Module - Dynamic Visualization of Social Networks

Netvis Module - Dynamic Visualization of Social Networks,Sloan School of Management, Massachusetts Institute of Technology, Jonathon N. Cummings
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▶ Creating a planetary nervous system together | Dirk Helbing

Carefully considering all well-known worries about privacy, professor Dirk Helbing raises a great concept: The Planetary Nervous System (PNS). Roughly, this idea involves connecting our smartphones worldwide to build a global measurement network and create a flow of information on all kinds of topics.


https://www.youtube.com/watch?v=BKcWPdSUJVA&t=3m57s


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Ranking in interconnected multilayer networks reveals versatile nodes

Ranking in interconnected multilayer networks reveals versatile nodes | networks and network weaving | Scoop.it

The determination of the most central agents in complex networks is important because they are responsible for a faster propagation of information, epidemics, failures and congestion, among others. A challenging problem is to identify them in networked systems characterized by different types of interactions, forming interconnected multilayer networks. Here we describe a mathematical framework that allows us to calculate centrality in such networks and rank nodes accordingly, finding the ones that play the most central roles in the cohesion of the whole structure, bridging together different types of relations. These nodes are the most versatile in the multilayer network. We investigate empirical interconnected multilayer networks and show that the approaches based on aggregating—or neglecting—the multilayer structure lead to a wrong identification of the most versatile nodes, overestimating the importance of more marginal agents and demonstrating the power of versatility in predicting their role in diffusive and congestion processes.


Ranking in interconnected multilayer networks reveals versatile nodes
Manlio De Domenico, Albert Solé-Ribalta, Elisa Omodei, Sergio Gómez & Alex Arenas

Nature Communications 6, Article number: 6868 http://dx.doi.org/10.1038/ncomms7868 ;


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Dmitry Alexeev's curator insight, May 6, 10:03 AM

 insight on the networks

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Beyond Contact Tracing: Community-Based Early Detection for Ebola Response

Beyond Contact Tracing: Community-Based Early Detection for Ebola Response | networks and network weaving | Scoop.it

The 2014 Ebola outbreak in west Africa raised many questions about the control of infectious disease in an increasingly connected global society. Limited availability of contact information has made contact tracing difficult or impractical in combating the outbreak. We consider the development of multi-scale public health strategies and simulate policies for community-level response aimed at early screening of communities rather than individuals, as well as travel restrictions to prevent community cross-contamination. Our analysis shows community screening to be effective even at a relatively low level of compliance. In our simulations, 40% of individuals conforming to this policy is enough to stop the outbreak. Simulations with a 50% compliance rate are consistent with the case counts in Liberia during the period of rapid decline after mid September, 2014. We also find the travel restriction policies to be effective at reducing the risks associated with compliance substantially below the 40% level, shortening the outbreak and enabling efforts to be focused on affected areas. Our results suggest that the multi-scale approach could be applied to help end the outbreaks in Guinea and Sierra Leone, and the generality of our model can be used to further evolve public health strategy for defeating emerging epidemics.


D. Cooney, V. Wong, Y. Bar-Yam, Beyond contact tracing: Community-based early detection for Ebola response, ArXiv:1505.07020 [physics.soc-ph] (May 26, 2014); New England Complex Systems Institute Report 15-05-01

http://necsi.edu/research/social/pandemics/beyondcontact.html 


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The Unfinished Business of the People’s Climate March | Civic Hall

The Unfinished Business of the People’s Climate March | Civic Hall | networks and network weaving | Scoop.it
After all of the hype, where is the People’s Climate Movement?
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EngagementHQ - Online Community Engagement Software

EngagementHQ - Online Community Engagement Software | networks and network weaving | Scoop.it
EngagementHQ is an online community engagement platform designed to help organizations and government connect with the public.
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Connected community will go farther together

Editor’s Note: MAPP (Mobilizing for Action through Planning and Partnerships) is a local coalition that aims to foster connections and build on our strengths to improve our individual, family, and community health. Health is defined broadly to include cultural, economic, educational, environmental, mental, physical and spiritual health.    
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Beyond Basic Income: The Power of Networks Putting People First — Medium

Beyond Basic Income: The Power of Networks Putting People First — Medium | networks and network weaving | Scoop.it
The Swarm basic income program starts today, May 1st. If you want to learn more about the power of this concept and its potential read on.
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"Mapping" Questions to Enrich Networks

"Mapping" Questions to Enrich Networks | networks and network weaving | Scoop.it
A few weeks ago I had the opportunity to facilitate some of Farm to Institution New England's (or FINE's) Summit at UMass-Amherst. Specifically I was asked to offer a bit of thinking, a few prompts...
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Complexity Lab Learning - YouTube

Complexity Lab Learning - YouTube | networks and network weaving | Scoop.it
Foton Labs is an online resource dedicated to the area of complex systems providing a broad group of people with, information, research, learning and media c...
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Hold space for complex problems

Hold space for complex problems | networks and network weaving | Scoop.it

Harold Jarche

"Every one of the major challenges facing us is complex. But our organizations are not designed for complexity. Our education institutions do not teach an understanding of complexity. Our workplace training does not factor in complexity. While not all of our problems are complex, the simpler issues are being dealt with. We need to take what Clay Shirky calls the cognitive surplus, and use it to wrestle with complex problems. Understanding complexity must be part of any informed discussions on government policy or governance. We ignore it at our peril."


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David Hain's curator insight, April 27, 7:25 AM

"We need structures to hold the space  so that our collective intelligence can deal with the wicked problems we face." ~ @hjarche

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Network Visualization

Network Visualization | networks and network weaving | Scoop.it

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Ari Sahagún's curator insight, May 14, 2014 12:05 AM

Lots of network visualizations about house/senate voting, lingusitics, basketball, rock, and civic technology to name a few

Valerie MacLeod's curator insight, April 22, 12:27 PM

Interesting representations of many different concepts from tastes to March madness.

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Theory Of Constraints and the Thinking Process | VECTOR Consulting Group

Theory Of Constraints and the Thinking Process | VECTOR Consulting Group | networks and network weaving | Scoop.it
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