University of Waterloo

About: University of Waterloo is a education organization based out in Waterloo, Ontario, Canada. It is known for research contribution in the topics: Population & Poison control. The organization has 36093 authors who have published 93906 publications receiving 2948139 citations. The organization is also known as: UW & uwaterloo.

Leadership, values, and subordinate self-concepts

Abstract: This article discusses two means by which leaders can impact on subordinate self-regulatory processes — making particular patterns of values salient and activating specific subordinate self-concepts. Research indicating compatible structures among values and self-identities is discussed, and it is suggested that such structures are automatically related by networks of mutual activation or inhibition. The potential of this framework for advancing leadership practice and research is also discussed.

Ecotoxicology and innate immunity in fish

Abstract: This review summarizes the scattered literature on the effects of toxicants on the external and internal innate immunity of fish. Insecticides, heavy metals and surfactants have been the most frequently examined toxicants, whereas dioxins, furans and polychlorinated biphenyls have been tested less frequently. Studies to date have been conducted at the levels of cells in vitro, of fish in the laboratory and microcosms, and also of fish in the field. Among innate immune parameters, phagocyte respiratory burst appears especially sensitive to toxicants. Toxicant-induced alterations in external mucous production have also been observed repeatedly. Field studies have occasionally examined changes to melano-macrophage centers, but the meaning of such changes is not clear. Advances in basic knowledge of fish innate immunity should lead to improvements in monitoring fish health and predicting the impact of toxicants on fish populations, which is a fundamental ecotoxicological goal.

Many-Body Localization in Periodically Driven Systems

Abstract: We consider disordered many-body systems with periodic time-dependent Hamiltonians in one spatial dimension By studying the properties of the Floquet eigenstates, we identify two distinct phases: (i) a many-body localized (MBL) phase, in which almost all eigenstates have area-law entanglement entropy, and the eigenstate thermalization hypothesis (ETH) is violated, and (ii) a delocalized phase, in which eigenstates have volume-law entanglement and obey the ETH The MBL phase exhibits logarithmic in time growth of entanglement entropy when the system is initially prepared in a product state, which distinguishes it from the delocalized phase We propose an effective model of the MBL phase in terms of an extensive number of emergent local integrals of motion, which naturally explains the spectral and dynamical properties of this phase Numerical data, obtained by exact diagonalization and time-evolving block decimation methods, suggest a direct transition between the two phases

Error rate performance analysis of coded free-space optical links over gamma-gamma atmospheric turbulence channels

Abstract: Error control coding can be used over free-space optical (FSO) links to mitigate turbulence-induced fading. In this paper, we derive error performance bounds for coded FSO communication systems operating over atmospheric turbulence channels, considering the recently introduced gamma-gamma turbulence model. We derive a pairwise error probability (PEP) expression and then apply the transfer function technique in conjunction with the derived PEP to obtain upper bounds on the bit error rate. Simulation results are further demonstrated to confirm the analytical results