PANDA FACIES

A case of bilateral peri orbital ecchymosis without any identifiablepathology,which subsided on its own, in due course.

Topological Mott Insulators

We consider extended Hubbard models with repulsive interactions on a Honeycomb lattice and the transitions from the semi-metal phase at half-filling to Mott insulating phases. In particular, due to the frustrating nature of the second-neighbor repulsive interactions, topological Mott phases displaying the quantum Hall and the quantum spin Hall effects are found for spinless and spinful fermion models, respectively. We present the mean-field phase diagram and consider the effects of fluctuations within the random phase approximation (RPA). Functional renormalization group analysis also show that these states can be favored over the topologically trivial Mott insulating states.Comment: 5 Pages, 4 figure

VIRTUAL ORGANIZATIONS: WHAT YOU SEE MAY NOT BE WHAT YOU GET

Virtual organizations are new organizational forms comprising a set of network transactions that differ from those found in markets and hierarchies. This paper explores the nature of these network transactions through an in-depth study of a virtual firm. The virtual organization is characterized by constant organizing through virtual teams and alliances, a unique management culture and a set of norms, information and knowledge sharing enabled by information technology, and employee self-governance. The organization gains from a culture of fast-response and efficiency while employees are trusted to exercise discretion and take initiatives.Information Systems Working Papers Serie

Eigenfunction localization in dilute lattices of various dimensionalities

Journal ArticleAs a fraction of bonds p is removed from a lattice, we find a threshold PQ above which all eigenstates are nonpropagating (Anderson localized). This occurs well before the classical percolation threshold. For example, in two dimensions where the classical threshold is pc = 1/2 , we find PQ = 0

Testability Analysis of Synchronous Sequential Circuits Based On Structural Data

Bounds on test sequence length can be used as a testability measure. We give a procedure to compute the upper bound on test sequence length for an arbitrary sequential circuit. We prove that the bound is exact for a certain class of circuits. Three design rules are specified to yield circuits with lower test sequence bounds