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Lyapunov Modes in Hard-Disk Systems

open access: yesJournal of Statistical Physics, 2005
We consider simulations of a two-dimensional gas of hard disks in a rectangular container and study the Lyapunov spectrum near the vanishing Lyapunov exponents. To this spectrum are associated “eigen-directions”, called Lyapunov modes.
Eckmann, Jean-Pierre   +3 more
core   +5 more sources

Multiple Failure Modes,Causes and Prevention of Random Fracture for Hard Tooth Flank Gears

open access: yesJixie chuandong, 2022
The history and evolution of the random fracture terms,the morphological features,failure examples,causes and preventive measures of various random fracture modes are comprehensively discussed.
Xiaolu Zhu
doaj   +2 more sources

A Dynamic Web Recommender System Using Hard and Fuzzy K-Modes Clustering

open access: yesIFIP Advances in Information and Communication Technology, 2013
Part 2: Data MiningInternational audienceThis paper describes the design and implementation of a new dynamic Web Recommender System using Hard and Fuzzy K-modes clustering. The system provides recommendations based on user preferences that change in real
Andreas S Andreou, Andreou Andreas S
exaly   +3 more sources

Head-Positioning Control Using Virtual Resonant Modes in a Hard Disk Drive

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
In conventional control systems in hard disk drives, it is difficult to compensate for disturbances above the primary mechanical resonance. In this paper, a design method that uses a virtual resonant mode in head-positioning systems of hard disk drives ...
Takenori ATSUMI
doaj   +3 more sources

Influence of hard alloys CEDG modes on the size of dissolved layer

open access: yesMATEC Web of Conferences, 2018
Correctly assigned technological modes of processing define the accuracy of forming, optimum mechanical and electrochemical speed of the processed material removal, quality and durability of the cutting tool as well as provide the self-sharpening ...
Medvedeva Olga   +2 more
doaj   +2 more sources

ANALYSIS AND SELECTION OF RATIONAL CUTTING MODES WHILE USING HARD-ALLOY TOOL FOR SHAFT TURNING

open access: yesНаука и техника, 2018
Turning machining of such parts as shafts is considered as the most widely-spread method formanufacturing units, mechanisms and machinery. While doing so it is necessary to ensure high quality of shaft turning with the help of a hard-alloy tool (accuracy
V. K. Sheleg   +2 more
doaj   +3 more sources

Disorder and excess modes in hard-sphere colloidal systems [PDF]

open access: yesEPL (Europhysics Letters), 2014
The anomalous thermodynamic properties of glasses remain incompletely understood, notably the anomalous peak in the heat capacity at low temperatures; it is believed to be due to an excess of low-frequency vibrational modes and a manifestation of the ...
Schall P.   +4 more
core   +6 more sources

Thermodynamics and vibrational modes of hard sphere colloidal systems [PDF]

open access: yes, 2014
The central question that we address in this thesis is the thermodynamics of colloidal glasses. The thermodynamics of colloidal hard sphere glasses are directly related to the entropy of the system, since the phase behavior of hard sphere systems is ...
Zargar, R.
core   +2 more sources

Temperature phase transitions in Rb2KRe3+F6 elpasolites - Raman spectroscopy study

open access: yesMaterials and Devices, 2021
Phase transitions in crystals of fluorine-containing elpasolites are investigated by Raman scattering spectroscopy. It was found that lattice instabilities in these crystals are induced by soft mode condensations, while restorations of these modes in ...
Alexander N VTYURIN   +5 more
doaj   +6 more sources

Customization of two-dimensional extremal materials

open access: yesMaterials & Design, 2022
Extremal materials are elastic metamaterials with rank-deficient elasticity tensor. Due to this novel property of the elasticity tensor, extremal materials (especially pentamode materials) show outstanding performance in various wave manipulation ...
Ming Cai   +3 more
doaj   +1 more source

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