University of Exeter

About: University of Exeter is a education organization based out in Exeter, United Kingdom. It is known for research contribution in the topics: Population & Climate change. The organization has 15820 authors who have published 50650 publications receiving 1793046 citations. The organization is also known as: Exeter University & University of the South West of England.

Advantageous Selection in Insurance Markets

Abstract: This article reverses the standard conclusion that asymmetric information plus competition results in insufficient insurance provision. Risk-tolerant individuals take few precautions and are disinclined to insure, but they are drawn into a pooling equilibrium by the low premiums created by the presence of safer, more risk-averse types. Taxing insurance drives out the reckless clients, allowing a strict Pareto gain. This result depends on administrative costs in processing claims and issuing policies, as does the novel finding of a pure-strategy, partial-pooling, subgame-perfect Nash equilibrium in the insurance market. Copyright 2001 by the RAND Corporation.

Patterns of Ring Currents in Conjugated Molecules: A Few-Electron Model Based on Orbital Contributions

Abstract: In the CTOCD-DZ (continuous transformation of origin of current density-diamagnetic zero) formulation of coupled Hartree−Fock theory for magnetic response of closed-shell systems, induced current density at each point is calculated with the gauge origin at that point. In addition to its economy and accuracy for total current maps, CTOCD-DZ is shown to yield a unique and physically motivated definition of, and symmetry criteria for, orbital contributions to current density. This leads to a few-electron interpretation of ring currents. Only the four HOMO electrons of an aromatic (4n+2)-electron monocycle contribute significantly to the ring current, and in general only a small subset of the high-lying π electrons dominate the more complex patterns of current in polycyclic π systems. Benzene, naphthalene, hexacene, pyracylene, coronene, and corannulene are treated as examples.

Deformed wing virus is a recent global epidemic in honeybees driven by Varroa mites

Abstract: Deformed wing virus (DWV) and its vector, the mite Varroa destructor, are a major threat to the world’s honeybees. Although the impact of Varroa on colony-level DWV epidemiology is evident, we have little understanding of wider DWV epidemiology and the role that Varroa has played in its global spread. A phylogeographic analysis shows that DWV is globally distributed in honeybees, having recently spread from a common source, the European honeybee Apis mellifera. DWV exhibits epidemic growth and transmission that is predominantly mediated by European and North American honeybee populations and driven by trade and movement of honeybee colonies. DWV is now an important reemerging pathogen of honeybees, which are undergoing a worldwide manmade epidemic fueled by the direct transmission route that the Varroa mite provides.

Making Sense of Sensemaking in Organization Studies

Abstract: Sensemaking’ is an extraordinarily influential perspective with a substantial following among management and organization scholars interested in how people appropriate and enact their ‘realities’. Organization Studies has been and remains one of the principal outlets for work that seeks either to draw on or to extend our understanding of sensemaking practices in and around organizations. The contribution of this paper is fourfold. First, we review briefly what we understand by sensemaking and some key debates which fracture the field. Second, we attend critically to eight papers published previously in Organization Studies which we discuss in terms of five broad themes: (i) how sense is made through discourse; (ii) the politics from which social forms of sensemaking emerge and the power that is inherent in it; (iii) the intertwined and recursive nature of micro-macro sensemaking processes; (iv) the strong ties which bind sensemaking and identities; and (v) the role of sensemaking processes in decision making and change. Third, while not designed to be a review of extant literature, we discuss these themes with reference to other related work, notably that published in this journal. Finally, we raise for consideration a number of potentially generative topics for further empirical and theory-building research.