We review selected known results on partially ordered patterns (POPs) that include co-unimodal, multiand shuffle patterns, peaks and valleys ((modified) maxima and minima) in permutations, the Horse permutations and others. We provide several (new) results on a class of POPs built on an arbitrary flat poset, obtaining, as corollaries, the bivariate generating function for the distribution of pe...

We control the linear polarization of emission from the coherently emitting K^{+} and K^{-} valleys (valley coherence) in monolayer WS_{2} with an out-of-plane magnetic field of up to 25 T. The magnetic-field-induced valley Zeeman splitting causes a rotation of the emission polarization with respect to the excitation by up to 35° and reduces the polarization degree by up to 16%. We explain both...

A newly discovered Konservat-Lagerstätte from the Middle Miocene of the western Olympus Range, Dry Valleys, Antarctica, yields cypridoidean ostracods complete with preserved body and appendages. This is the first record of three-dimensionally fossilized animal soft tissues from the continent. The ostracods are preserved in goethite, secondary after pyrite, representing a novel mode of exception...

valleys are marked in blue. FLUVIAL VALLEYS ON TITAN – A GLOBAL PERSPECTIVE. M. Langhans, R. Jaumann, K. Stephan, R. H. Brown, B. J. Buratti, R. Clark, K. H. Baines, P. D. Nicholson and R. D. Lorenz. DLR, Institute of Planetary Research, Berlin, Germany, Dept. of Earth Sciences, Inst. of Geosciences, Freie Universität Berlin, Germany, Lunar and Planetary Laboratory, University of Arizona, Tucso...

This paper presents a new method of line drawing based on the hypothesis that artists draw the lines that decompose the object into parts, and the lines that help convey the shapes of the parts. But they draw these lines differently depending on the viewpoint. Contours are the most obvious part-decomposing lines. Valley lines, which typically delimit convex parts, are also part-decomposing line...

An approach to extract watersheds and watercourses, as well as their corresponding valleys and hills, from images with subpixel precision is proposed. The critical points of the terrain are essential as the starting points for the construction of these separatrices. They are extracted efficiently with subpixel precision using an approach based on derivatives of Gaussian filters. The separatrice...

This paper describes a new method for hypsometric tinting for small-scale maps. The method generalises digital elevation models by removing small unnecessary details and accentuating major valleys and ridgelines. The elevation data are filtered with lower and upper quartile filters that are combined using a drainage network. The lower quartile filter is applied in valleys, delimited by the drai...

An approach to extract watersheds and watercourses, as well as their corresponding valleys and hills, from grid DTMs and digital images with subpixel accuracy is proposed. The critical points of the terrain, which are essential as the starting points for the construction of these separatrices, are extracted efficiently with subpixel accuracy by a linear-filter-based approach. The separatrices a...

.b rom time to time the existence of typhus has been recorded in Kashmir. In the winter of 1942-43, an epidemic of typhus occurred in Kashmir, and this paper is based on a study of this epidemic. Kashmir is a large valley at about 5,500 feet surrounded by high mountains 12,000 feet high. In the main valley runs the Jhelum river and the tributaries of this river descend from smaller valleys lyin...

Imagine v valleys and all cities placed in this valleys. Cost of traveling from town to town in valley is very small (negligible), let us say equal to 1. When salesmen wants to go to other valley he has to pass mountain chain – this is of a huge cost, let us say equal to 1000. Salesman lives in one of towns in valley A. Optimal solution must then contain 4 mountain chains crossing (from A to B,...