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As much of my world changes to Daylight Savings Time--but Arizona 
doesn't--I'm thinking of the impact of Time on Networks.
Selected complexity articles below
   Barry Wellman

   Step by step, link by link, putting it together--Streisand/Sondheim
        The earth to be spannd, connected by network--Walt Whitman
              It's Always Something--Roseanne Roseannadanna

              A day like all days, filled with those events
          that alter and illuminate our times--Walter Cronkite
   NetLab Network      			                            FRSC
   Distinguished Visiting Scholar   Social Media Lab   Ryerson University
         Founder, International Network for Social Network Analysis
   NETWORKED: The New Social Operating System  Lee Rainie & Barry Wellman  

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Date: Mon, 11 Mar 2019 12:02:25 +0000
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Subject: [utf-8] Latest Complexity Digest Posts

Learn about the latest and greatest related to complex systems research. More at

Rare and everywhere: Perspectives on scale-free networks

    Are scale-free networks rare or universal? Important or not? We present the recent research about degree distributions of networks. This is a controversial topic, but, we argue, with some adjustments of the terminology, it does not have to be.

Rare and everywhere: Perspectives on scale-free networks
Petter Holme
Nature Communicationsvolume 10, Article number: 1016 (2019)

Source: (

The Atlas of Inequality

    Economic inequality isn't just limited to neighborhoods. The restaurants, stores, and other places we visit in cities are all unequal in their own way.
The Atlas of Inequality shows the income inequality of people who visit different places in the Boston metro area. It uses aggregated anonymous location data from digital devices to estimate people's incomes and where they spend their time.
Using that data, we've made our own place inequality metric to capture how unequal the incomes of visitors to each place are. Economic inequality isn't just limited to neighborhoods, it's part of the places you visit every day.

Source: (

Segregation in religion networks

Religion is considered as a notable origin of interpersonal relations, as well as an effective and efficient tool to organize a huge number of people towards some challenging targets. At the same time, a believer prefers to make friend with other people of the same faith, and thus people of different faiths tend to form relatively isolated communities. The segregation between different religions is a major factor for many social conflicts. However, quantitative understanding of religious segregation is rare. Here we analyze a directed social network extracted from (the largest directed social network in China, similar to, which is consisted of 6875 believers in Christianity, Buddhism, Islam and Taoism. This religion network is highly segregative. Comparative analysis shows that the extent of segregation for different religions is much higher than that for different races and slightly higher than that for different political parties. Furthermore, we
study the few cross-religion links and find 46.7% of them are probably related to charitable issues. Our findings provide quantitative insights into religious segregation and valuable evidence for religious syncretism.

Segregation in religion networks
Jiantao Hu, Qian-Ming Zhang and Tao Zhou
EPJ Data Science 2019 8:6

Source: (

The wisdom of polarized crowds

This article explores the effect of ideological polarization on team performance. By analysing millions of edits to Wikipedia, the authors reveal that politically diverse editor teams produce higher-quality articles than homogeneous or moderate teams, and they identify the mechanisms responsible for producing these superior articles.

The wisdom of polarized crowds
Feng Shi, Misha Teplitskiy, Eamon Duede & James A. Evans
Nature Human Behaviour (2019)

Source: (

Cell pelotons: A model of early evolutionary cell sorting, with application to slime mold Dictyostelium discoideum

A theoretical model is presented for early evolutionary cell sorting within cellular aggregates. The model involves an energy-saving mechanism and principles of collective self-organization analogous to those observed in bicycle pelotons (groups of cyclists). The theoretical framework is applied to slime-mold slugs (Dictyostelium discoideum) and incorporated into a computer simulation which demonstrates principally the sorting of cells between the anterior and posterior slug regions. The simulation relies on an existing simulation of bicycle peloton dynamics which is modified to incorporate a limited range of cell metabolic capacities among heterogeneous cells, along with a tunable energy-expenditure parameter, referred to as an ˙˙output-level˙˙ or ˙˙starvation-level˙˙ to reflect diminishing energetic supply. Proto-cellular dynamics are modeled for three output phases: ˙˙active˙˙, ˙˙suffering˙˙, and ˙˙dying or dead.˙˙ Adjusting the starvation parameter causes cell differentiation and
sorting into sub-groups within the cellular aggregate. Tuning of the starvation parameter demonstrates how weak or expired cells shuffle backward within the cellular aggregate.

Cell pelotons: A model of early evolutionary cell sorting, with application to slime mold Dictyostelium discoideum


Journal of Theoretical Biology
Volume 469, 21 May 2019, Pages 75-95

Source: (

The second great inflection point in mobility innovation

Radically new dynamics in the early 20th century transformed cars and, in 
turn, the world. Here˙˙s why the next great inflection point is upon us, 
auguring changes no less profound.

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The road to seamless mobility

Will the coming mobility revolution make urban traffic better, or worse?

Source: (

Reimagining the mobility ecosystem: A CEO˙˙s guide

Our mental models about mobility˙˙individually owned cars, gas stations, traffic jams, the driver˙˙s license as a rite of passage˙˙are on the verge of disruption. Mobility is about to become cheaper, more convenient, a better experience, safer, and cleaner˙˙not 50 or even 25 years from now, but perhaps within a dozen.

We describe the coming transformation as mobility˙˙s Second Great Inflection Point, because it has the potential to be as profound as the one that put horses to pasture and revolutionized industries and societies worldwide. A defining characteristic of the new world taking shape is that the automotive industry, which has operated for more than a century alongside but decidedly disconnected from other components of what transportation has come to mean, will blend into a more interconnected, customer-centric ecosystem. That shift boosts the odds that the momentous changes afoot will affect your business, even if the closest you currently get to a car is your morning commute.

Source: (

An Introduction to Complex Systems ˙˙ Making Sense of a Changing World˙˙ | Joseph V. Tranquillo | Springer

This textbook explores the interdisciplinary field of complex systems theory and how it relates to practical questions and issues. The text is interspersed with both philosophical and quantitative arguments, and each chapter ends with questions and prompts that help readers make mor

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Evolution of Complex Life ˙˙ May 15-17, 2019 @GeorgiaTech

The evolution of complex life is an inherently multidisciplinary problem encompassing a wide range of topics, including:

How do new levels of the biological hierarchy evolve?
How do interactions between individual organisms contribute to complex phenotypes and behaviors?
How do social behaviors evolve?
How do evolutionary novelties emerge and evolve?
How do organisms drive geochemical cycles and how do geochemical changes influence evolution?
At this conference we will bring together scientists from different backgrounds to discuss these and other important topics about one of the most salient aspects of life: the evolution of complexity.

Source: (

Sponsored by the Complex Systems Society.
Founding Editor: Gottfried Mayer.
Editor-in-Chief: Carlos Gershenson.

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