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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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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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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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Irregularities in Level Crossings and Pedestrian Crossings
2019Level crossings are single-level crossings; they differ from pedestrian crossings in that the latter are meant only for pedestrian and/or bicycle traffic. Railway line administrators and road administrators are obliged to perform their duly efforts related to ensuring safety on level crossings and pedestrian crossings. This paper focuses on the results
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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
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Level crossings and anticrossings
Physica, 1967Abstract The level-crossing technique of atomic spectroscopy utilizes the spatial interference in the scattering of resonance radiation which can occur when a Zeeman level of one of the fine (hyperfine) structure levels of an atom is brought into coincidence (“crossed”) with a Zeeman level of a neighboring fine (hyperfine) structure level by the ...
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Cross-level hierarchical high-level synthesis
Proceedings Design, Automation and Test in Europe, 2002Bringmann, Oliver, Rosenstiel, Wolfgang
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