— A collective of robots can together complete a task that is beyond the capabilities of any of its individual robots. One property of a robotic collective that allows it to complete such a task is the shape of the collective. One method to form that shape is to form it at a size proportional to the number of robots in that collective, i.e. scalably. In our previous work, scalably forming the s...

This paper provides a brief introduction to the use and usefulness of Suzumura consistency, a coherence requirement for binary relations that weakens transitivity. The property is introduced by Suzumura (1976b) in the context of collective choice but, as demonstrated in some recent contributions, its applicability reaches beyond the boundaries of social-choice theory. In addition to a summary o...

Recent scholars have found that collective action can be harnessed to sustainably manage common property, contrary to longstanding hypotheses that without effective external regulation community members will exploit communal resources. Researchers have also found that social capital, in addition to biophysical conditions and community attributes, is an important element of successful collective...

â  introduction â  ethnic disputes and collective aggressions are observable in each period of history and are more evident in traditional and nomadic communities. this issue has had many life and property damages in the past and present times and it has also prevented social development to flourish. based on the damages of collective aggression, the researchers attempt to study the fundamental...

Cells can migrate individually or collectively. Collective movement is common during normal development and is also a characteristic of some cancers. This review discusses recent insights into features that are unique to collective cell migration, as well as properties that emerge from these features. The first feature is that cells of the collective affect each other through adhesion, force-de...

A collective of robots can together complete a task that is beyond the capabilities of any of its individual robots. One property of a robotic collective that allows it to complete such a task is the shape of the collective. This paper presents Kilobot, a simple modular robot designed to work in a collective to self-assemble and self-heal that collective’s shape. In previous work, an algorithm ...

Public infrastructure and other publicly provided services that benefit industry fall into two board categories: pure and congestible. This paper explores the implications of both types of public inputs. The differences between the two have considerable implications for the design of tax and spending policy. In particular, this paper highlights the effects of a congestible public input as being...