Results 71 to 80 of about 6,627,879 (323)
Molecular and Cellular Hallmarks of Age‐Related Vestibular Hair Cell Degeneration
Advanced Science, EarlyView.This study utilizes single‐cell RNA‐seq transcriptomes, advanced imaging, and electrophysiology to examine universal and cell‐type‐specific aging signatures of vestibular hair cells. The study shows that impaired hair bundle function is a key driver of age‐related vestibular dysfunction.
Samadhi Kulasooriya +10 more
wiley +1 more source
Cyclotron orbit knot and tunable-field quantum Hall effect
Physical Review Research, 2019 From a semiclassical perspective, the Bohr-Sommerfeld quantization of the closed cyclotron orbits for charged particles such as electrons in an external magnetic field gives rise to discrete Landau levels and a series of fascinating quantum Hall ...
Yi Zhang
doaj +1 more source
Effect of Additional Mass on the Apparent Young’s Modulus of a Wooden Bar by Longitudinal Vibration
BioResources, 2014 We investigated the influence of an additional mass bonded on a wooden bar on its apparent Young’s modulus based on a longitudinal vibration theory. Rectangular bars of Sitka spruce (Picea sitchensis Carr.) were used as experimental materials.
Yoshitaka Kubojima +2 more
doaj +1 more source
Seifert's algorithm, Châtelet bases and the Alexander ideals of classical knots [PDF]
, 2002 I begin by developing a procedure for the construction of a Seifert surface, using Seifert's algorithm, and the calculation of a Seifert matrix for a knot from a suitable encoding of a knot diagram. This procedure deals with the inherent indeterminacy of
O'Brien, Killian Michael
core
Classical homological invariants are not determined by knot Floer homology and Khovanov homology
, 2018 We illustrate that there are knots for which Heegaard knot Floer homology and Khovanov homology are identical but the Alexander module and torsion invariants differ. The examples are certain symmetric unions.
Toshifumi Tanaka, Cha, JC
core +1 more source
Unpacking the Farmland Capitalization Effect of Ethanol Establishment
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT We unpack the impact of expansions in ethanol production—as measured by proximity to newly constructed ethanol plants and capacity expansions—on farmland values using land transaction data from Kansas in combination with modern causal inference techniques.
Gabriel S. Sampson, Jisang Yu
wiley +1 more source
Crop Insurance Design and On‐Farm Risk Adaptation
Applied Economic Perspectives and Policy, EarlyView.ABSTRACT The United States spends billions annually on crop insurance premium subsidies, yet the prevailing distance‐based guarantee design unintentionally rewards risk‐taking by linking subsidies to yield variability. We consider a simple redesign: define guarantees in terms of probability so that coverage reflects a consistent likelihood of indemnity.
Gerald Van Tassell, Alan P. Ker
wiley +1 more source
Searching for ribbons with machine learning
Machine Learning: Science and TechnologyWe apply Bayesian optimization and reinforcement learning to a problem in topology: the question of when a knot bounds a ribbon disk. This question is relevant in an approach to disproving the four-dimensional smooth Poincaré conjecture; using our ...
Sergei Gukov +3 more
doaj +1 more source
Climate change and perennial crop production: Evidence of yield impact and adaptation in California
American Journal of Agricultural Economics, EarlyView.Abstract Perennial crops are economically important. They contribute to food security, providing essential nutrients that are often lacking in annual crops, and provide additional environmental benefits compared with annual crops. Despite their importance, empirical research on the impacts of climate change and adaptation on perennial crops remains ...
Yuanyuan Wen +2 more
wiley +1 more source
SU(3) knot solitons: Hopfions in the F2 Skyrme–Faddeev–Niemi model
Physics Letters B, 2018 We discuss the existence of knot solitons (Hopfions) in a Skyrme–Faddeev–Niemi-type model on the target space SU(3)/U(1)2, which can be viewed as an effective theory of both the SU(3) Yang–Mills theory and the SU(3) anti-ferromagnetic Heisenberg model ...
Yuki Amari, Nobuyuki Sawado
doaj +1 more source