10,017 research outputs found
Personnel and the Library School
published or submitted for publicatio
Influence of Gender Appropriateness of Sex-Role and Occupational Preferences on Evaluations of a Competent Person
Previous research has found that while masculine sex-role preferences are more highly valued, persons holding gender consistent sex-role preferences generally are rated as more attractive. The present study explores the interactive effect of gender consistent/inconsistent sex-role preferences and congruent/incongruent occupational choices on evaluations of a person from varying perspectives. Statistical analysis of the data revealed (1) people holding masculine sex-role preferences are perceived to have a higher motivation to succeed, and to be more competent; (2)from the perspective of friend and potential employee, persons holding gender consistent sex-role preferences are perceived as more attractive; (3) from the perspective of potential employer, there is a tendency for males to prefer employees who hold masculine sex-role preferences, while females continue to prefer gender consistent sex-role preferences
Irreversibility and Entanglement Spectrum Statistics in Quantum Circuits
We show that in a quantum system evolving unitarily under a stochastic
quantum circuit the notions of irreversibility, universality of computation,
and entanglement are closely related. As the state evolves from an initial
product state, it gets asymptotically maximally entangled. We define
irreversibility as the failure of searching for a disentangling circuit using a
Metropolis-like algorithm. We show that irreversibility corresponds to
Wigner-Dyson statistics in the level spacing of the entanglement eigenvalues,
and that this is obtained from a quantum circuit made from a set of universal
gates for quantum computation. If, on the other hand, the system is evolved
with a non-universal set of gates, the statistics of the entanglement level
spacing deviates from Wigner-Dyson and the disentangling algorithm succeeds.
These results open a new way to characterize irreversibility in quantum
systems.Comment: 15 pages, 4 figure
Safety, the Preface Paradox and Possible Worlds Semantics
This paper contains an argument to the effect that possible worlds semantics renders
semantic knowledge impossible, no matter what ontological interpretation is given
to possible worlds. The essential contention made is that possible worlds semantic
knowledge is unsafe and this is shown by a parallel with the preface paradox
Stability of bromine, iodine monochloride, copper (II) chloride, and nickel (II) chloride intercalated pitch-based graphite fibers
Four different grades of pitch-based graphite fibers (Amoco P-55, P-75, P-100. and P-120) were intercalated with each of four different intercalates: bromine (Br2), iodine monochloride (ICl), copper (II) chloride (CuCl2), and nickel (II) chloride (NiCl2). The P-55 fibers did not react with Br2 or NiCl2, and the P-75 did not react with NiCl2. The stability of the electrical resistance of the intercalated fibers was monitored over long periods of time in ambient, high humidity (100 percent at 60 C), vacuum (10 to the -6 torr), and high temperature (up to 400 C) conditions. Fibers with lower graphitization form graphite intercalation compounds (GIC's) which are more stable than those with higher graphitization (i.e., P-55 (most stable) greater than P-75 greater than P-100 greater than P-120 (least stable). Br2 formed the most stable GIC's followed in order of decreasing stability by ICl, CuCl2, and NiCl2. While Br2 GIC's had the most stability, ICl had the advantages of forming GIC's with slightly greater reduction in resistance (by about 10%) than Br2, and the ability to intercalate P-55 fiber. Transition metal chlorides are susceptible to water vapor and high temperature. The stability of fibers in composites differs
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