نتایج جستجو برای: common peaks number
تعداد نتایج: 1779623 فیلتر نتایج به سال:
We study the photoproduction of scalar mesons close to the threshold of f0(980) and a0(980) using a unitary chiral model. Peaks for both resonances show up in the invariant mass distributions of pairs of pseudoscalar mesons. A discussion is made on the photoproduction of these resonances in nuclei, which can shed light on their nature, a subject of continuous debate. PACS: 12.39.Fe, 13.60.Le, 2...
Extensive X-ray, optical and radio observations of the bright afterglow of the Gamma Ray Burst GRB 030329 are used to construct the spectral and temporal history of the event. The data are fitted using the standard fireball shock model to provide estimates of the initial energy, ε = 6.8×10 52 ergs sr −1 , the density of the ambient medium, n 0 = 1 cm −3 , the electron and magnetic energy densit...
Highly multimodal function optimization is similar to many other optimization problems requiring many iterations and large number of function evaluations. Glowworm Swarm Optimization (GSO) is one of the common swarm intelligence algorithms, where GSO has the ability to optimize multimodal functions efficiently. Locating the peaks of a high-dimensional multimodal function requires a large popula...
Copy number variation (CNV) is a form of structural in the human genome that provides medical insight into complex diseases; while whole-genome sequencing becoming more affordable, whole-exome (WES) remains an important tool clinical diagnostics. Because its discontinuous nature and unique characteristics sparse target-enrichment-based WES data, analysis detection CNV peaks remain difficult tas...
We report on several features in the energy spectrum from an ultralow-noise germanium detector operated deep underground. By implementing a new technique able to reject surface events, a number of cosmogenic peaks can be observed for the first time. We discuss an irreducible excess of bulklike events below 3 keV in ionization energy. These could be caused by unknown backgrounds, but also dark m...
Large-scale patterns of spatial variation in species geographic range size are central to many fundamental questions in macroecology and conservation biology. However, the global nature of these patterns has remained contentious, since previous studies have been geographically restricted and/or based on small taxonomic groups. Here, using a database on the breeding distributions of birds, we re...
OBJECTIVES To estimate annual changes and trends in the population of informal carers and to investigate transitions to caregiving by age, gender, locus of care, and level of involvement. DESIGN Longitudinal analysis of data from the British household panel survey, 1991 to 1998, an annual prospective survey of a nationally representative sample of more than 5000 private households in England,...
We consider a methodology based in B-splines scaling functions to numerically invert Fourier or Laplace transforms. The methodology is particularly well suited when the original function or its derivatives present peaks or jumps due to discontinuities in the domain.
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