Analysis of the wave phenomenon stability in network-like industrial constructions

2020 ◽  
Vol 1679 ◽  
pp. 042060
Author(s):  
V V Provotorov ◽  
S A Tkachova ◽  
A A Part ◽  
A S Volkova
Keyword(s):  
Wave Phenomenon

The Nature of Light

2017 ◽  
Author(s):  
Frank S. Levin
Keyword(s):  
Wave Phenomenon ◽  
Electromagnetic Waves ◽  
Speed Of Light ◽  
Particle Theory ◽  
Christiaan Huygens ◽  
Slit Experiment

Chapter 2 reviews answers to the question of what is light, starting with the ancient Greeks and ending in 1900 with the wave concept of Maxwell’s electrodynamics. For some ancient Greeks, light consisted of atoms emitted from surface of the object, whereas for others it was fire that either entered into or was emitted by eyes, although the latter possibility was effectively eliminated around the year 1000. Competing proposals well after then were that light is either a wave phenomenon or consists of particles, with Isaac Newton’s corpuscular (particle) theory prevailing by the end of the 1600s over the wave concept championed by Christiaan Huygens, who published the first estimate of the speed of light. In the early 1800s, Thomas Young’s two-slit experiment proved that light was a wave, a concept codified and firmly grounded through Maxwell’s theory of electromagnetic waves.

Canal Wave Oscillations from Expansion of I-84 Bridge in Boise, Idaho

2012 ◽  
Vol 2309 (1) ◽  
pp. 200-205
Author(s):  
William Rahmeyer ◽  
J. M. Clegg ◽  
S. L. Barfuss
Keyword(s):  
New York ◽  
Physical Model ◽  
Unique Solution ◽  
Wave Phenomenon ◽  
Bridge Columns ◽  
Bridge Abutments ◽  
Wave Problem ◽  
Model Study ◽  
Bridge Crossing

Recent improvements and the widening of the I-84 Bridge crossing of the New York Canal in Boise, Idaho, have increased the number of bridge columns from 28 to 60. The resulting structure has two parallel rows of columns that extend across the width of the bridge longitudinally within the canal. After the widening of the bridge and addition of the bridge columns, the canal began experiencing an oscillating wave phenomenon that originated from the bridge columns and caused erosion of upstream and downstream canal banks and bridge abutments. A physical model study was conducted to investigate the wave phenomenon and determine what modifications to the columns or canal would be necessary to prevent the wave oscillations. The physical model was successful in simulating the wave phenomenon, and four different modifications for resolving the wave problem were tested in the model. A unique solution was found that used precast nose cones attached to selected columns. The nose cones have been installed in the prototype bridge crossing, and no wave oscillations have occurred since installation. This paper discusses the study to simulate the wave phenomenon and the four modifications that were evaluated to reduce or prevent wave oscillations.

scholarly journals Accelerating medium effect as a general wave phenomenon

2012 ◽  
Vol 340 ◽  
pp. 012042 ◽  
Author(s):  
A I Frank ◽  
P Geltenbort ◽  
M Jentschel ◽  
G V Kulin ◽  
D V Kustov ◽  
...  
Keyword(s):  
Wave Phenomenon ◽  
Medium Effect ◽  
General Wave

Arterial stationary wave phenomenon in Tolosa-Hunt syndrome

Neurology ◽  
1975 ◽  
Vol 25 (8) ◽  
pp. 765-765 ◽  
Author(s):  
H. L. KETTLER ◽  
J. D. MARTIN
Keyword(s):  
Wave Phenomenon ◽  
Stationary Wave ◽  
Hunt Syndrome

A new traveling wave phenomenon of Dictyostelium in the presence of cAMP

2010 ◽  
Vol 239 (11) ◽  
pp. 879-888 ◽  
Author(s):  
Hana Ševčíková ◽  
Jitka Čejková ◽  
Lenka Krausová ◽  
Michal Přibyl ◽  
František Štěpánek ◽  
...  
Keyword(s):  
Wave Phenomenon ◽  
Traveling Wave

Reflected Wave Phenomenon in SiC Motor Drives: Consequences, Boundaries, and Mitigation

2020 ◽  
Vol 35 (10) ◽  
pp. 10629-10642 ◽  
Author(s):  
Balaji Narayanasamy ◽  
Arvind Shanmuganathan Sathyanarayanan ◽  
Fang Luo ◽  
Cai Chen
Keyword(s):  
Wave Phenomenon ◽  
Motor Drives ◽  
Reflected Wave

Based on the Principle of Approximate Model Established Model Test Rig Simulation of the Actual Test Bench

2012 ◽  
Vol 614-615 ◽  
pp. 14-19
Author(s):  
Min Xue ◽  
Zhu Ma ◽  
Yan Jun Li ◽  
Long Bin Yang ◽  
Fang Zhu
Keyword(s):  
Wave Phenomenon ◽  
Fluid Dynamic ◽  
Pressure Fluctuations ◽  
Steam Pressure ◽  
Approximate Model ◽  
Two Phase ◽  
Small Model ◽  
Main Steam ◽  
Relationship Of ◽  
Physical Phenomena

For Marine pressurization boiler dynamic system, when the boiler provide steam for air storage, boiler drum pressure and steam pressure will have produced a wave phenomenon; In order to research this a wave phenomenon, considering similar principles , establish the model experiments to simulate the wave process. Due to boiler provide steam for air storage that involves in many complex physical processes, including two phase flow, heat transfer, braising physical phenomena. By a simple analysis, to be completely similar to the model, model must be the same as the real situation; it will lose the small model experimental significance. According to this problem, we consider use approximate modeling method which usually used in engineering, seize the pressure fluctuations of the main contradictions; Put forward in the process of considering only reflect pressure fluctuations of local fluid dynamic field project of similar approximation, Finally we get the fluctuation relationship of the actual conditions and small model experiment of main steam pressure.

Terrorism as a Global Wave Phenomenon: An Overview

2017 ◽  
Author(s):  
David C. Rapoport
Keyword(s):  
Wave Phenomenon ◽  
New Left ◽  
Life Cycles ◽  
Government Officials ◽  
Variety Of Groups ◽  
Political Events

Global terror began in the 1880s, but it took a century before a few scholars began to understand its peculiar dynamic. One reason for the difficulty was that many scholars and government officials had “historical amnesia.” When they saw it disappear, they assumed it had become part of history and no longer had contemporary relevance. But global terror disappears and then reappears. Another reason they failed to understand the pattern is that the concept of generation was rarely used to describe politics, a concept that requires one to recognize the importance of life cycles. Modern global terror comes in the form of waves precipitated by major political events that have important global significance. A wave consists of a variety of groups with similar tactics and purposes that alter the domestic and international scenes. Four very different waves have materialized: the Anarchist, the Anti-Colonial, the New Left, and the Religious. The first three have been completed and lasted around 40 years; the fourth is now in its third decade, and if it follows the rhythm of its predecessors, it should be over in the mid-2020s, but a fifth wave may emerge thereafter.

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