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Opportunistic Sampling by Level-Crossing
2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07, 2007Level-crossing A/D converters (LCA/D) have been considered in the literature and have been shown to efficiently sample certain classes of signals. In this paper we provide a stable algorithm to perfectly reconstruct signals of finite rate of innovation using level-crossing samples.
Karen M. Guan, Andrew C. Singer
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Adaptation architectures cross levels
Proceedings of the 2nd international workshop on Ultra-large-scale software-intensive systems, 2008To design ULS systems with the adaptive capacity they will need to be viable, requires that we broaden our understanding of software architecture. It is not just the software that must adapt, but the human-technical systems that produce and operate it.
Yuanyuan Song +2 more
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Derivative Level-Crossing Sampling
IEEE Transactions on Circuits and Systems II: Express Briefs, 2015A new continuous-time level-crossing sampling LCS technique, which is called derivative LCS (DLCS), and associated reconstruction are proposed for bandpass signals. The derivative of the input is level-crossing sampled, and the result is transmitted; at the receiver, these samples are zero-order held and integrated, automatically resulting in piecewise-
Pablo Martínez-Nuevo +2 more
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On Level Crossings and Cycles in Dam Processes
Mathematics of Operations Research, 1977The classical dam with input according to a process with stationary, independent increments and output at unit rate is considered. The stochastic properties of level crossings, i.e. up- and downcrossings of a fixed level x > 0 are studied. It is shown that successive downcrossings of any such level constitute a renewal process with a.s.
J. W. Cohen, Michael Rubinovitch
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Level crossing curvature and the Laplacian
Image and Vision Computing, 1988Abstract Level crossing curvature is introduced as a basic description of an image, making it possible to detect edges and measure their curvatures at the same time. The relation between level crossing curvature and the Laplacian is derived, and this reveals that the Laplacian itself contains an edge curvature component.
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Antiadiabatic theorem for crossing levels
Physical Review Letters, 1989We consider in this note the time dependence of a system for which two levels (which are not in general decoupled) accidentally cross (or almost cross) for some value of the parameters of the Hamiltonian. We show that for a well-defined class of crossings or narrowly avoided crossings, in which the Hamiltonian changes slowly on its own scale, the ...
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On Level Crossing Analysis of Queues
Australian Journal of Statistics, 1981SummaryIn this note we introduce a new level crossing analysis and using it derive an integral equation for the steady state waiting time in the GI/G/1 Queue. For the GI/M/1 queue we derive the rates of up‐ and down‐crossings of the virtual delay process and two integral equations, one for the steady state time spent in the system and the other for the
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Level-Crossing Properties of the Risk Process
Mathematics of Operations Research, 1998For the classical risk process R(t) that is linear increasing with slope 1 between downward jumps of i.i.d. random sizes at the points of a homogeneous Poisson process we consider the level-crossing process C(x) = (L(x), (Ai (x), Bi (x))1≤ i ≤ L ( x )), where L(x) is the number of jumps from (x, ∞) to (−∞, x] and Ai (x) (Bi (x)) are the distances from
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Origin Of Level Crossing Method
2008This chapter presents a condensed version of the original development of the level crossing method ( LC ) for deriving probability distributions of state variables in stochastic models.
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2018
To adequately characterize partnerships, we need to view them as cross-level phenomena (i.e. involving partners from different geographical or jurisdictional levels) because agreements that make sense at one level do not necessarily translate to levels above or below the original one.
Barbara Gray, Jill Purdy
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To adequately characterize partnerships, we need to view them as cross-level phenomena (i.e. involving partners from different geographical or jurisdictional levels) because agreements that make sense at one level do not necessarily translate to levels above or below the original one.
Barbara Gray, Jill Purdy
openaire +1 more source