Systematic Analysis of Emergent Collective Motion Produced by a 3D Hybrid Zonal Model

2021 ◽  
Vol 84 (1) ◽  
Author(s):  
Rajnesh K. Mudaliar ◽  
Andrei V. Zvezdin ◽  
Geoffrey S. Bratt ◽  
Timothy M. Schaerf
Keyword(s):  
Collective Motion ◽  
Systematic Analysis ◽  
Zonal Model

scholarly journals Nuclear spin scissors mode – experimental status

2018 ◽  
Vol 194 ◽  
pp. 04004
Author(s):  
Irina Molodtsova ◽  
Evgeny Balbutsev ◽  
Peter Schuck
Keyword(s):  
Experimental Data ◽  
Rare Earth ◽  
Nuclear Spin ◽  
Collective Motion ◽  
Systematic Analysis ◽  
Scissors Mode ◽  
Experimental Status ◽  
Rare Earth Nuclei ◽  
New Type

A new type of nuclear collective motion - the spin scissors mode - was predicted seven years ago. Promising signs of its existence in 232Th were found. We perform a systematic analysis of experimental data on M1 excitations in rare-earth nuclei to find traces of the spin scissors mode in this area. Obvious signs of its existence are demonstrated.

scholarly journals Label-free Cell Tracking Enables Collective Motion Phenotyping in Epithelial Monolayers

2021 ◽  
Author(s):  
Shuyao Gu ◽  
Rachel M Lee ◽  
Zackery Benson ◽  
Chenyi Ling ◽  
Michele I Vitolo ◽  
...  
Keyword(s):  
Cell Tracking ◽  
Cancer Metastasis ◽  
Collective Motion ◽  
Essential Feature ◽  
Metastatic Potential ◽  
Training Data ◽  
Collective Cell Migration ◽  
Label Free ◽  
Cell Nuclei ◽  
Systematic Analysis

Collective cell migration is an umbrella term for a rich variety of cell behaviors, whose distinct character is essential for biological function, notably for cancer metastasis. One essential feature of collective behavior is the motion of cells relative to their immediate neighbors. We introduce an AI-based pipeline to segment and track cell nuclei from phase contrast images. Nuclei segmentation is based on a U‐Net convolutional neural network trained on images with nucleus staining. Tracking, based on the Crocker-Grier algorithm, quantifies nuclei movement and allows for robust downstream analysis of collective motion. Since the AI algorithm required no new training data, our approach promises to be applicable to and yield new insights for vast libraries of existing collective motion images. In a systematic analysis of a cell line panel with oncogenic mutations, we find that the collective rearrangement metric, D2min, which reflects non-affine motion, shows promise as an indicator of metastatic potential.

Preparatory Procedures for Electron Microscopic Analysis at the Molecular Level of Resolution

1978 ◽  
Vol 36 (3) ◽  
pp. 516-520
Author(s):  
F.J. Sjostrand
Keyword(s):  
Electron Microscope ◽  
Molecular Level ◽  
Microscopic Analysis ◽  
Resolving Power ◽  
Cellular Structures ◽  
Electron Microscopic ◽  
Systematic Analysis ◽  
Technical Developments ◽  
Thin Sectioning ◽  
Obvious Reason

In the 1940's and 1950's electron microscopy conferences were attended with everybody interested in learning about the latest technical developments for one very obvious reason. There was the electron microscope with its outstanding performance but nobody could make very much use of it because we were lacking proper techniques to prepare biological specimens. The development of the thin sectioning technique with its perfectioning in 1952 changed the situation and systematic analysis of the structure of cells could now be pursued. Since then electron microscopists have in general become satisfied with the level of resolution at which cellular structures can be analyzed when applying this technique. There has been little interest in trying to push the limit of resolution closer to that determined by the resolving power of the electron microscope.

Local interaction rules and collective motion in black neon tetra (Hyphessobrycon herbertaxelrodi) and zebrafish (Danio rerio).

2019 ◽  
Vol 133 (2) ◽  
pp. 143-155 ◽  
Author(s):  
Vicenç Quera ◽  
Elisabet Gimeno ◽  
Francesc S. Beltran ◽  
Ruth Dolado
Keyword(s):  
Danio Rerio ◽  
Collective Motion ◽  
Local Interaction

A SYSTEMATIC ANALYSIS OF THE EFFECTS OF MOBILE PHONE APPLICATIONS ON PHYSICAL ACTIVITY

2020 ◽  
Vol 2020 ◽  
pp. 1483-1484
Author(s):  
Masoumeh Hosseinpour ◽  
◽  
Ralf Terlutter ◽  
Holger Roschk
Keyword(s):  
Physical Activity ◽  
Mobile Phone ◽  
Systematic Analysis ◽  
Mobile Phone Applications

The Sustainable Debts of Philip II

2017 ◽  
Author(s):  
Mauricio Drelichman ◽  
Hans-Joachim Voth
Keyword(s):  
Sixteenth Century ◽  
Strong Evidence ◽  
Military Expenditure ◽  
Debt Service ◽  
Fiscal Sustainability ◽  
Short Term ◽  
Systematic Analysis ◽  
Philip Ii ◽  
Long Run

This chapter addresses the sustainability of debt. A systematic analysis based on the International Monetary Fund's (IMF) methodology to evaluate fiscal sustainability shows that Castile was able to service its debts in the long run. While liquidity was scarce during periods of intense warfare, years of relative peace brought large surpluses. The data collected from Castile's annual fiscal accounts produced new yearly series of revenue, military expenditure, short-term debt issues, and short-term debt service. The resulting database spans a full 31-year period—enough to employ modern quantitative techniques. This analysis provides strong evidence that Castile's fiscal position in the second half of the sixteenth century was on a solid footing. The chapter then assesses whether the events that led to major downturns in Castile's financial fortunes could have been anticipated.

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