Results 31 to 40 of about 680 (158)
Phase matching strategy for the undulator system in the European X-ray Free Electron Laser
Physical Review Accelerators and Beams, 2017 The undulator system in the European X-ray Free Electron Laser is mainly comprised of 5-m long undulator segments and 1.1 m long intersections in between. The longitudinal component of the electrons’ velocity is reduced when traveling inside an undulator
Yuhui Li, Joachim Pflueger
doaj +1 more source
The “Amsterdam Castle”: A Case Study of Wiggle Matching and the Proper Calibration Curve [PDF]
Radiocarbon, 1995 We have performed a high-precision 14C wiggle-matching study on two oak beams from the “Castle of Amsterdam”. These beams are also dated by dendrochronology. Our two dating methods can only be made consistent using the recommended calibration curve (1986) instead of the revised one (1993).
van der Plicht, J, Jansma, E, Kars, H
openaire +4 more sources
Chronology and development of the Chalcolithic necropolis of Varna I
Documenta Praehistorica, 2017 In the following paper, we present the main results of our now completed studies of the Varna I cemetery, based on the excavations undertaken by Ivan Ivanov in the years 1972–1991. The richness of the assemblages is singular in Old World prehistory.
Raiko Krauß +5 more
doaj +1 more source
Paleomagnetic constraint of the age and duration of the Taupō Eruption, New Zealand
Earth, Planets and Space, 2023 We have carried out paleomagnetic analyses of tephras from the Taupō eruption, one of the most violent eruptions on Earth in the past 5000 years. Pyroclastic deposits were collected with 7 cm3 cubes pushed into each unit of the Taupō eruption sequence ...
Takeshi Hasegawa +9 more
doaj +1 more source
14C Wiggle-Match Dating in High-Resolution Sea-Level Research [PDF]
Radiocarbon, 2001 Comparison of two sets of marsh-accumulation records from each of three Connecticut (USA) salt marshes, one based on individually calibrated dates and the other on wiggle-match dating of the same series of dates, shows that wiggle-match dating results in more precise and objective reconstructions of longer-term (102–103 yr) changes in accumulation rate.
van de Plassche, O. +3 more
openaire +2 more sources
A numerical approach to 14C wiggle-match dating of organic deposits: best fits and confidence intervals [PDF]
Quaternary Science Reviews, 2003 C-14 wiggle-match dating (WMD) of peat deposits uses the non-linear relationship between C-14 age and calendar age to match the shape of a sequence of closely spaced peat C-14 dates with the C-14 calibration curve. A numerical approach to WMD enables the quantitative assessment of various possible wiggle-match solutions and of calendar year confidence ...
Blaauw, M. +4 more
openaire +3 more sources
Bayesian 14C-rationality, Heisenberg Uncertainty, and Fourier Transform
Documenta Praehistorica, 2020 Following some 30 years of radiocarbon research during which the mathematical principles of 14C-calibration have been on loan to Bayesian statistics, here they are returned to quantum physics.
Bernhard Weninger, Kevan Edinborough
doaj +1 more source
Advanced Materials, EarlyView.This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley +1 more source
Consensus Formation and Change are Enhanced by Neutrality
Advanced Science, EarlyView.Neutral agents are shown to enhance both the formation and overturning of consensus in collective decision‐making. A general mathematical model and experiments with locusts and humans reveal that neutrality enables robust consensus via simple interactions and accelerates consensus change by reducing effective population size.
Andrei Sontag +3 more
wiley +1 more source
Internet Archaeology, 2003 The first article to be published in this issue was a research article by Symonds and Ling on concepts of time and travel in early medieval England.
Judith Winters
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