نتایج جستجو برای: wave analysis
تعداد نتایج: 2999360 فیلتر نتایج به سال:
Hypertension is a major risk factor for cardiovascular disease and thus at the origin of many deaths by e.g. heart attack or stroke. Hypertension is caused by many factors including an increase in arterial stiffness which leads to changes in pulse wave velocity and wave reflections. Those often result in an increased left ventricular load which may result in heart failure as well as an increase...
Partial-wave analysis is one step in a process connecting experimental measurements to the N states we are studying. Progress has been made in the area of ‘model-independent’ analysis. However, more model-dependent approaches are needed to cover broader energy ranges. An example of the problems faced by these more ambitious analyses is given.
Sufficient conditions for wave breaking are found for the short-pulse equation describing wave packets of few cycles on the ultra-short pulse scale. The analysis relies on the method of characteristics and conserved quantities of the short-pulse equation and holds both on an infinite line and in a periodic domain. Numerical illustrations of the finite-time wave breaking are given in a periodic ...
Partial-Wave Analysis of the ηπ + π − System Produced in the Reaction π − p → ηπ + π − n at 18 GeV/c
A partial-wave analysis of 9082 ηππn events produced in the reaction πp → ηππn at 18.3 GeV/c has been carried out using data from experiment 852 at Brookhaven National Laboratory. The data are dominated by J = 0 partial waves consistent with observation of the η(1295) and the η(1440). The mass and width of the η(1295) were determined to be 1282± 5 MeV and 66± 13 MeV respectively while the η(144...
Wave scattering by an array of bodies that is periodic except for a finite number of missing or irregular elements is considered. The field is decomposed into contributions from a set of canonical problems, which are solved using a modified array scanning method. The resulting interaction theory for defects is very efficient, and can be used to construct the field in a large number of different...
Article history: Received 25 February 2010 Received in revised form 14 May 2010 Accepted 15 October 2010 Available online 27 October 2010
given the sensitivity of current ground-based gravitational wave (gw) detectors, any continuous-wave signal we can realistically expect will be at a level or below the background noise. hence, any data analysis of detector data will need to rely on statistical techniques to separate the signal from the noise. while with the current sensitivity of our detectors we do not expect to detect any tru...
In this paper, the modification of Endurance Wave Analysis (EWA) in assessment of offshore platforms based on the new-wave theory is introduced. EWA is a new method to estimate the response of offshore structures in different sea states by use of incremental records. This study is offered practical procedures to select time duration and intensifying trend of the records. In addition, a simplifi...
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