Supporters and Opponents of Prohibition

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Exploiting recent advances in monitoring technology and the drop of its costs, authoritarian and oppressive regimes are tightening the grip around the virtual lives of their citizens. Meanwhile, the dissidents, oppressed by these regimes, are organizing online, cloaking their activity with anti-censorship systems that typically consist of a network of anonymizing proxies. The censors have becom...

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Online social media offers an unprecedented laboratory to explore social interactions at scale. Yet it's hard to anticipate all the effects of a system with so many actors, and the systems we build are often re-appropriated by end users. To better understand how these systems are used, we employ mixed methods research to combine small-scale observations with large-scale data analysis. I'll prov...

Supporters of sperm

The Biology of Spermatozoa (BoS) meetings have run on a biannual basis since the early 1990s. They are dedicated to the fascinating research topic of sperm and their complicated route to fertilization. The BoS meetings focus on sperm, but they also explore additional supporting factors important in fertilization, such as those present in seminal and ovarian fluid, as well as the genomic bases o...

The Economics of Prohibition The Economics of Prohibition

Passive Supporters of Terrorism and Phase Transitions

We discuss some social contagion processes to describe the formation and spread of radical opinions in the spirit of previous work by Serge Galam. The dynamics of opinion spread involves local threshold processes as well as mean field effects. We calculate and observe phase transitions in the dynamical variables resulting in a rapidly increasing number of passive supporters. This strongly indic...