5,627 research outputs found

    THE SIZE OF THE PRIZE: TESTING RENT-DISSIPATION WHEN TRANSFER QUANTITY IS ENDOGENOUS

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    We present a transfer-seeking model of political economy in which the size of the transfer is determined endogenously, and in which over-dissipation of rents is predicted even under conditions of risk-neutrality and perfect rationality. We implement an empirical test of this model by collecting behavioral data in a laboratory experiment. We confirm the existence of behavior that leads to over-dissipation of rents in games with both symmetric and asymmetric political power. We also confirm the hypotheses that lowering the political power of one player can lead to smaller rent-seeking expenditures and to larger transfers. We observe behavior that deviates from dominant strategies.Political Economy,

    An ion probe study of the sulphur isotopic composition of Fe-Ni sulphides in CM carbonaceous chondrites

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    From the Introduction: The CM chondrites have endured variable degrees of aqueous alteration [1] which has changed their original mineralogy. A detailed study of the petrology and mineralogy of the sulphides in a suite of increasingly aqueously altered CMs, combined with sulphur isotope data measured in situ, can provide clues as to whether differences in the CM group are a result of different degrees of aqueous alteration, or whether they are the result of nebular heterogeneity

    Re United Electrical Workers, Local 523, and Welland Forge Ltd

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    Employee Grievance alleging failure to pay full pay for certain holidays. The facts: There was no real dispute between the parties about the facts. I should perhaps note at the outset that in its written statement of facts submitted to the board the union treats both grievances as relating to the July 1st holiday. The com-pany\u27s statement of facts, on the other hand, treats McHarg\u27s grievance as relating to the August 4th holiday. McHarg\u27s grievance form itself does not indicate to which holiday it relates. He was sick for both of them and it is a reasonable inference that his grievance, which is expressed in terms of a grievance against failure to pay for one holiday only, relates to the more recent of them. In any case, nothing turns on this discrepancy between the submission of the union and the submission of the company

    Time Reversal and n-qubit Canonical Decompositions

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    For n an even number of qubits and v a unitary evolution, a matrix decomposition v=k1 a k2 of the unitary group is explicitly computable and allows for study of the dynamics of the concurrence entanglement monotone. The side factors k1 and k2 of this Concurrence Canonical Decomposition (CCD) are concurrence symmetries, so the dynamics reduce to consideration of the a factor. In this work, we provide an explicit numerical algorithm computing v=k1 a k2 for n odd. Further, in the odd case we lift the monotone to a two-argument function, allowing for a theory of concurrence dynamics in odd qubits. The generalization may also be studied using the CCD, leading again to maximal concurrence capacity for most unitaries. The key technique is to consider the spin-flip as a time reversal symmetry operator in Wigner's axiomatization; the original CCD derivation may be restated entirely in terms of this time reversal. En route, we observe a Kramers' nondegeneracy: the existence of a nondegenerate eigenstate of any time reversal symmetric n-qubit Hamiltonian demands (i) n even and (ii) maximal concurrence of said eigenstate. We provide examples of how to apply this work to study the kinematics and dynamics of entanglement in spin chain Hamiltonians.Comment: 20 pages, 3 figures; v2 (17pp.): major revision, new abstract, introduction, expanded bibliograph
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