scholarly journals Limitations of Mean-Based Algorithms for Trace Reconstruction at Small Distance

2021 ◽  
Author(s):  
Elena Grigorescu ◽  
Madhu Sudant ◽  
Minshen Zhu
Keyword(s):  
Small Distance

A New Defect in Polyethylene Single Crystals

1973 ◽  
Vol 31 ◽  
pp. 70-71
Author(s):  
E. L. Thomas ◽  
S. L. Sass
Keyword(s):  
Single Crystals ◽  
Screw Dislocation ◽  
Small Distance ◽  
Dipole Model ◽  
Dislocation Dipole ◽  
Chain Folding ◽  
Black And White ◽  
Polymer Crystal ◽  
Different Types

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.

Unbiased estimation of particle number and sizes using the new stereological tools: the disector, the fractionator, the selector, and the nucleator — or just point-sampled intercepts

1988 ◽  
Vol 46 ◽  
pp. 428-429
Author(s):  
H.J.G. Gundersen
Keyword(s):  
Particle Number ◽  
Small Distance ◽  
Parallel Plane ◽  
Unbiased Estimation ◽  
Severe Problem ◽  
New Era ◽  
Size And Shape ◽  
Distinct Property ◽  
Sectioned Tissue

Previously, all stereological estimation of particle number and sizes were based on models and notoriously gave biased results, were very inefficient to use and difficult to justify. For all references to old methods and a direct comparison with unbiased methods see recent reviews.The publication in 1984 of the DISECTOR, the first unbiased stereological probe for sampling and counting 3—D objects irrespective of their size and shape, signalled the new era in stereology — and give rise to a number of remarkably simple and efficient techniques based on its distinct property: It is the only known way to obtain an unbiased sample of 3-D objects (cells, organelles, etc). The principle is simple: within a 2-D unbiased frame count or sample only cells which are not hit by a parallel plane at a known, small distance h.The area of the frame and h must be known, which might sometimes in itself be a problem, albeit usually a small one. A more severe problem may arise because these constants are known at the scale of the fixed, embedded and sectioned tissue which is often shrunken considerably.

scholarly journals XVI. Actual fire and detonation produced by the contact of tin-foil, with the salt composed of copper and the nitrous acid. By B. Higgins, M. D. communicated by R. Brocklesby, M. D. F. R. S. and of the Royal College of Physicians in London

1773 ◽  
Vol 63 ◽  
pp. 137-141
Keyword(s):  
Royal College ◽  
Nitrous Acid ◽  
Thin Sheet ◽  
Small Distance ◽  
Green Liquor ◽  
Sheet Copper ◽  
Actual Fire

Several pieces of thin sheet-copper, placed vertically, and at a small distance from each other, in the strong nitrous acid diluted with half its quantity, or more, of water, and suffered to remain in a close vessel, until the acid is saturated, afford a crystalline blueish green salt, which is to be separated from the undissolved copper and the superfluent green liquor, and kept in a well-corked bottle; because, on exposure to the air, it deliquesces.

9.—Circular Disc between Two Parallel Planes Close Together

1975 ◽  
Vol 73 ◽  
pp. 149-161 ◽  
Author(s):  
J. C. Cooke
Keyword(s):  
Viscous Fluid ◽  
Approximate Method ◽  
Small Distance ◽  
Circular Disc ◽  
Total Charge

SynopsisThe two basic problems solved here are (1) a disc charged to a uniform potential placed between two earthed planes parallel to its plane, each a small distance h from the disc, (2) the space filled with viscous fluid and the disc slowly rotating uniformly about its axis with the planes held at rest. The total charge or turning moment are calculated as series in powers of h, giving four terms in each case. An approximate method devised by Maxwell [5] is shown to have three terms correct in both cases.

scholarly journals Metrical Tone Shift and Spread in Harmonic Serialism

2016 ◽  
Vol 2 ◽  
Author(s):  
Jeroen Breteler
Keyword(s):  
Noun Phrase ◽  
Small Distance ◽  
Harmonic Serialism ◽  
Foot Structure ◽  
Tone Pattern

This paper proposes a framework for the analysis of bounded tone patterns, where tone shifts or spreads across a small distance. The framework starts from the idea that foot structure drives such tone processes, with foot edges acting as targets for tone association. To account for trisyllabic patterns, a theory of layered foot representation is adopted (Kager 2012, Martinez-Paricio 2013). In addition, to account for the opacity of foot-driven tone shift, the analysis is cast in Harmonic Serialism (Prince & Smolensky 1993, McCarthy 2000). Lastly, the paper presents a set of licensing and structural markedness constraints to derive the desired patterns. The approach is successfully applied to the default tone pattern of tbe Saghala noun phrase (Patin 2009), which shows a combination of shifting and spreading over a trisyllabic domain.

Optical scanning fiber dual-interferometer system for measuring a small distance

1996 ◽  
Author(s):  
Tianchu Li ◽  
Russell G. May ◽  
Anbo Wang ◽  
Richard O. Claus
Keyword(s):  
Small Distance ◽  
Optical Scanning ◽  
Scanning Fiber

Measurement of Interaction Forces at Small Distance under Electric Field in a Smectite Dispersed Silicone Oil Based ER Fluid

2001 ◽  
Vol 15 (06n07) ◽  
pp. 811-816 ◽  
Author(s):  
Toyohisa FUJITA ◽  
Toshio MIYAZAKI ◽  
Toshiharu TANAKA ◽  
Ke Jun Liu ◽  
Eiich KUZUNO ◽  
...  
Keyword(s):  
Electric Field ◽  
Silicone Oil ◽  
Small Distance ◽  
Surface Forces ◽  
Attraction Force ◽  
Interaction Forces ◽  
Repulsive Energy ◽  
Inflection Points ◽  
Dc Electric Field ◽  
Er Fluid

The apparatus to measure interaction forces under an electric field at small distance between a conductive hemisphere and a flat plate has been developed. The surface forces at small distance sandwiched ER fluid dispersing ultrafine smectite particles (20 to 50 nm thickness) in silicone oil has been measured. This fluid shows 0.7 kPa of apparent yield stress by applying 2.5 kV/mm of DC electric field. When an electric field applies to this ER fluid, the repulsive energy curves shows inflection points at about 0.2 μ m distance periodically at small distance of less than 1 μ m because the repulsion force decreases for a vacancy of particles after the particles are pushed out and the dipole attraction force acts between hemisphere and plate. On the other hand, when the electric field becomes off and it passes enough time, the inflection points is observed more shorter distance of about 0.15 μ m periodically. The coagulated particle size is estimated about 0.15 μ m under no electric field and becomes larger by applying electric field.

scholarly journals Magnetic well and Mercier stability of stellarators near the magnetic axis

2020 ◽  
Vol 86 (5) ◽  
Author(s):  
Matt Landreman ◽  
Rogerio Jorge
Keyword(s):  
Stability Criterion ◽  
Arbitrary Shape ◽  
Small Distance ◽  
Magnetic Axis ◽  
Design Approach ◽  
Ideal Condition ◽  
Independent Variables ◽  
Neoclassical Transport ◽  
Major Radius ◽  
Magnetic Well

We have recently demonstrated that by expanding in small distance from the magnetic axis compared with the major radius, stellarator shapes with low neoclassical transport can be generated efficiently. To extend the utility of this new design approach, here we evaluate measures of magnetohydrodynamic interchange stability within the same expansion. In particular, we evaluate the magnetic well, Mercier's criterion, and resistive interchange stability near a magnetic axis of arbitrary shape. In contrast to previous work on interchange stability near the magnetic axis, which used an expansion of the flux coordinates, here we use the ‘inverse expansion’ in which the flux coordinates are the independent variables. Reduced expressions are presented for the magnetic well and stability criterion in the case of quasisymmetry. The analytic results are shown to agree with calculations from the VMEC equilibrium code. Finally, we show that near the axis, Glasser, Greene and Johnson's stability criterion for resistive modes approximately coincides with Mercier's ideal condition.

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