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Resolving Author Name Homonymy to Improve Resolution of Structures in Co-author Networks
Improve Resolution Co-author Networks
2011/9/13
We investigate how author name homonymy distorts clustered large-scale co-author networks, and present a simple, e ective, scal-able and generalizable algorithm to ameliorate such distortions. We eval...
Ground-State Structures of Ice at High-Pressures
High-Pressures Ground-State Structures Ice
2011/9/13
Ab initio random structure searching based on density functional theory is used to determine the ground-state structures of ice at high pressures. Including estimates of lattice zero-point energies,ic...
Modified Symplectic Structures in Cotangent Bundles of Lie Groups
Symplectic Mechanics Noncommutative Configuration Space
2010/7/5
In earlier work [1], we studied an extension of the canonical symplectic structure in the cotangent bundle of an affine space Q = RN, by additional terms implying the Poisson non-commutativity of both...
New Physical Interpretation of Thermoelectric Cooling in Semiconductor Structures
Thermoelectricity Thermoelectric cooling
2010/9/29
Nontraditional approach to explain the thermoelectric cooling is suggested . It is based on the Le Chatelier-Braun thermodynamic principle. New effect of cooling and heating of junction of two materia...
Infinite-Hamiltonian Structures of the Riemann Equation
Integrability multi-Hamiltonian structures Riemann equation
2010/4/9
We give two distinct infinite-Hamiltonian representations for the Riemann equation. One with first order Hamiltonian operators and another with third order-first order Hamiltonian operators. Both repr...
Decimetric Fine Structures as a Possible Signature of Chromospheric Evaporation
a Possible Signature Chromospheric Evaporation
2010/10/27
In this work, we concentrate in the analysis of radio slowly drifting fine structures associated with solar flares recorded in the frequency range of (1000 - 2500) MHz by the Brazilian Solar Spectrosc...
Evolution from Commensurability to Size--Effects Structures in Three--Dimensional Billiards
Size Effects Structures Three--Dimensional Billiards
2010/10/21
We calculated the classical electron dynamics of three–dimensional electrons in a billiard system in tilted magnetic field and analyzed the evolution of trajectories in phase space by means of Poincar...
Carbon Nanotube Structures: Y-Junctions and Nanorings
Carbon Nanotube Structures Y-Junctions Nanorings
2010/10/21
The possibility of coupling two Y-junctions of carbon nanotubes, forming a type of nanotube ring is addressed here. Recent experimental evidences of growing carbon nanotube structures forming basicall...
Evidence of Plasma Resonance Instability from Observations of Solar Decimetric Fine Structures
Plasma Resonance Solar Decimetric Fine Structures
2010/10/27
The solar radio emissions in the decimetric frequency range (above 1000 MHz) are very rich in temporal and/or spectral fine structures. The Brazilian Solar Spectroscope (BSS) at INPE started operating...
Electron Transport Mechanism in GaN/AlGaN HEMT Structures
GaN Momentum Relaxation LO Phonon Scattering
2010/4/13
The electron transport mechanism in GaN/AlGaN HEMT (High Electron Mobility Transistors) structures grown with MBE on sapphire substrate was investigated by using the temperature dependence of the Hall...
Free-Carrier Absorption in Quantum Well Structures for Alloy-Disorder Scattering
Alloy-Disorder Scattering Quantum Well Structures Free-Carrier Absorption
2010/4/13
A free-carrier absorption theory is given for quantum wells structures in III-V semiconducting materials, for the case when the carriers a scattered by alloy-disorder. It is found that absorption coef...