Results 91 to 100 of about 9,225 (219)

“APPROXIMATE” WIGGLE-MATCH DATING APPLIED TO EARLY AMERICAN MUSEUM OBJECTS

Radiocarbon
ABSTRACTWiggle-match dating of tree-ring sequences is particularly promising for achieving high-resolution dating across periods with reversals and plateaus in the calibration curve, such as the entire post-Columbian period of North American history. Here we describe a modified procedure for wiggle-match dating that facilitates precise dating of wooden
Carla S Hadden, Katharine G Napora, Brent W Tharp   +2 more
openaire   +1 more source

RegPT: Direct and fast calculation of regularized cosmological power spectrum at two-loop order

, 2012
We present a specific prescription for the calculation of cosmological power spectra, exploited here at two-loop order in perturbation theory (PT), based on the multi-point propagator expansion.
Atsushi Taruya, Francis Bernardeau, L. Van Waerbeke, Sandrine Codis, T. Nishimichi, Takahiro Nishimichi   +5 more
core   +3 more sources

Exercise during 14 days of head down tilt bedrest attenuates motor unit impairments in older humans

Experimental Physiology, EarlyView.
Abstract Head‐down tilt bedrest (HDBR) models the effects of mechanical unloading on neuromuscular function. The efficacy of exercise in preserving motor unit (MU) function in older adults during HDBR remains unclear. This study investigated the effects of 14‐day HDBR on MU properties in older adults and the protective role of exercise.
Philippe St‐Martin, Jean‐Christophe Lagacé, Mathil Ruel, Ahmed Ghachem, Guillaume Léonard, Eleonor Riesco, Mathew Piasecki, Jamie S. McPhee, Isabelle J. Dionne   +8 more
wiley   +1 more source

Gristhorpe Man: an Early Bronze Age log-coffin burial scientifically defined [PDF]

, 2010
A log-coffin excavated in the early nineteenth century proved to be well enough preserved in the early twenty-first century for the full armoury of modern scientific investigation to give its occupants and contents new identity, new origins and a new ...
Batt, Cathy, Carter, Elizabeth, Edwards, Howell G M, Evans, Adrian, Hargreaves, Michael, Heron, Carl, Horsley, Tim, Janaway, Rob, Knüsel, Christopher J, Lynnerup, Niels, Melton, Nigel, Montgomery, Janet, Needham, Stuart, Northover, Peter, O'Connor, Sonia, Ogden, Alan, Parker Pearson, Mike, Schmidt, Armin, Sheridan, J A, Taylor, Timothy, Wastling, Vaughan, Wilson, Andrew   +21 more
core   +3 more sources

Scenic: A Language for Scenario Specification and Scene Generation

, 2019
We propose a new probabilistic programming language for the design and analysis of perception systems, especially those based on machine learning. Specifically, we consider the problems of training a perception system to handle rare events, testing its ...
Dosovitskiy Alexey, Fremont Daniel J., Gupta Ankush, Jiang Chenfanfu, Kulkarni Tejas, Liebelt Joerg, Milch Brian, Naveh Yehuda, Nori Aditya V, Ritchie Daniel, Ros Germán, Russell Stuart, Saheb-Djahromi Nasser, Sutton Michael, Wood Frank, Wu Bichen   +15 more
core   +1 more source

Electromagnetic corrections in hadronic processes [PDF]

, 2003
In quantum field theory, the splitting of the Hamiltonian into a strong and an electromagnetic part cannot be performed in a unique manner. We propose a convention for disentangling these two effects: one matches the parameters of two theories -- with ...
A. Rusetsky, Ananthanarayan, Baur, Bijnens, Bijnens, Cirigliano, Cirigliano, Cirigliano, Collaboration], Das, Gasser, Gasser, I. Scimemi, J. Gasser, Jallouli, Kaiser, Knecht, Knecht, Kubis, Lyubovitskij, Maltman, Meißner, Meißner, Moussallam, Neufeld, Nyffeler, topic, Urech   +27 more
core   +1 more source

Some problems in the study of the chronology of the ancient nomadic cultures in Eurasia (9th - 3rd centuries BC) [PDF]

, 2002
This research is focused on the chronological investigations of ancient nomads belonging to the Scythian cultures which occupied the steppe and forest-steppe zones of Eurasia during the 9th-3rd centuries BC.
Alekseev, A.Y., Bokovenko, N.A., Boltrik, Y., Chugunov, K.A., Cook, G., Dergachev, V.A., Kovaliukh, N., Possnert, G., Scott, E.M., Sementsov, A., Skripkin, V., van der Plicht, J., Vasiliev, S., Zaitseva, G.   +13 more
core   +2 more sources

Early synapsids neurosensory diversity revealed by CT and synchrotron scanning

The Anatomical Record, Volume 309, Issue 4, Page 912-929, April 2026.
Abstract Non‐mammaliaform synapsids (NMS) represent the closest relatives of today's mammals among the early amniotes. Exploring their brain and nervous system is key to understanding how mammals evolved. Here, using CT and Synchrotron scanning, we document for the first time three extreme cases of neurosensory and behavioral adaptations that probe ...
J. Benoit, R. Araujo, E. S. Lund, A. Bolton, T. Lafferty, Z. Macungo, V. Fernandez   +6 more
wiley   +1 more source

A Recent Reacceleration of the Local Bubble Revealed by Kinematics of Young Star Associations

The Astrophysical Journal Letters
The low-density region of the interstellar medium where the Sun is located is known as the Local Bubble, a cavity filled with high-temperature and low-density plasma that may be created by a series of supernova (SN) explosions over the past 14 Myr ...
Guang-Ya Zeng, Guang-Xing Li, Bing-Qiu Chen, Ji-Xuan Zhou, Martin G. H. Krause   +4 more
doaj   +1 more source

Connecting with tephras: principles, functioning, and applications of tephrochronology in Quaternary science [PDF]

, 2013
Tephrochronology is a unique method for linking and dating geological, palaeoecological, palaeoclimatic, or archaeological sequences or events. The method relies firstly on stratigraphy and the law of superposition, which apply in any study that connects
Lowe, David J.
core   +1 more source