نتایج جستجو برای: slope direction
تعداد نتایج: 203181 فیلتر نتایج به سال:
The UV (2000 Å) luminosity function (hereafter UV LF) of Coma cluster galaxies, based on more than 120 members, is computed as the statistical difference between counts in the Coma direction and in the field. Our UV LF is an up-date of a preliminary constrain on the UV LF previously computed without the essential background counts. The UV LF is well described by a power law with slope α ∼ 0.46,...
An overview of acetaldehyde exchange above a managed temperate mountain grassland in Austria over four growing seasons is presented. The meadow acted as a net source of acetaldehyde in all four years, emitting between 7 and 28 mg C m-2 over the whole growing period. The cutting of the meadow resulted in huge acetaldehyde emission bursts on the day of harvesting or one day later. During undistur...
Terrain parameters derived from digital elevation models (DEMs), such as slope gradient, aspect and cell surface area, are represented as a vector normal to the surface and calculated using the minimum areal unit of the DEM, that is enclosed between four data points. The position of the Sun is calculated by applying rotational matrices to a unit vector defined at noon as a function of latitude ...
A small-slope approximation (SSA) is used for numerical calculations of a radar backscattering cross section of the ocean surface for both Kuand C-bands for various wind speeds and incident angles. Both the lowest order of the SSA and the one that includes the next-order correction to it are considered. The calculations were made by assuming the surface-height spectrum of Elfouhaily et al for f...
Formant dynamics in vowel nuclei contribute to vowel classification in English. This study examined listeners' ability to discriminate dynamic second formant transitions in synthetic high front vowels. Acoustic measurements were made from the nuclei (steady state and 20% and 80% of vowel duration) for the vowels /i, I, e, epsilon, ae/ spoken by a female in /bVd/ context. Three synthesis paramet...
Conduction of an action potential along skeletal muscle fibers was graphically displayed by unidimensional latency-topography, UDLT. Since the slopes of the equipotential line were linear and the width of the line was constant, it was possible to calculate conduction velocity from the slope. To determine conduction direction of the muscle action potential elicited by electric stimulation applie...
We consider a string of length l with ends fixed, and rest state coinciding with x-axis. The string is plucked into oscillation. Let u (x, t) be the position of the string at time t. Assumptions: 1. Small oscillations, i.e. the displacement u (x, t) is small compared to the length l. (a) Points move vertically. In general, we don't know that points on the string move vertically. By assuming the...
We consider a string of length l with ends fixed, and rest state coinciding with x-axis. The string is plucked into oscillation. Let u (x, t) be the position of the string at time t. Assumptions: 1. Small oscillations, i.e. the displacement u (x, t) is small compared to the length l. (a) Points move vertically. In general, we don't know that points on the string move vertically. By assuming the...
Assuming the magnetic hypothesis for the formation of warps, we deduce a very simple formula for the warp curve in an idealized scenario. According to this formula the warp rises as the third power of radius in the innermost warped region, reaches the maximum slope at intermediate radii and has an asymptotic slope coincident with the direction of the extragalactic magnetic field. In most cases,...
An amphibious spherical robot capable of motion on land as well as underwater is developed to implement the complicated underwater operations in our previous research. In order to improve the speed performance of the spherical robot on a slope or comparatively smooth terrains, we propose a new rollerskating mode for the robot by equipping a passive wheel on each leg to implement the roller-skat...
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