Experiments on Cell-Formation

Numerical experiments on vortex ring formation

Numerical simulations are used to study the formation of vortex rings that are generated by applying a non-conservative force of long duration, simulating experimental vortex ring generation with large stroke ratio. For sufficiently long-duration forces, we investigate the extent to which properties of the leading vortex ring are invariant to the force distribution. The results confirm the exis...

Machine Cell Formation Based on a New Similarity Coefficient

One of the designs of cellular manufacturing systems (CMS) requires that a machine population be partitioned into machine cells. Numerous methods are available for clustering machines into machine cells. One method involves using a similarity coefficient. Similarity coefficients between machines are not absolute, and they still need more attention from researchers. Although there are a number o...

Experiments with network formation

We examine how groups of agents form trading networks in the presence of idiosyncratic risk and the possibility of contagion. Specifically, in our model, four agents play a two-stage, finitely repeated game. In the first stage, the network structure is endogenously determined in a noncooperative proposal game. In the second stage, agents play multiple rounds of a coordination game against all o...

Experiments on spontaneous vortex formation in Josephson tunnel junctions

The Importance of Experiments: Constraints on Chondrule Formation Models

Introduction: John Wood in his Masursky Lecture of 2001 made the case that many problems in meteoritics would remain unsolved unless rigorous astrophysical modeling were brought to bear on them. He emphasized the differences in cultures between the fields of meteoritics and astrophysics, one data-driven and fixated on minutiae such as per mil isotopic shifts, the other able to model physics as ...