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The growing field of spin electronics – spintronics – tells us that electrons spin like a top, carry angular momentum, and can be controlled as units of power, free of conventional electric current. N...
Incubation-time Based Approach for Dynamic Yielding of Metals
dynamic yielding incubation-time approach failure criteria
2012/9/24
Transition of the materials from elastic to plastic state is modeled by incubation-time based criterion. This approach is similar to the structural -temporal theory for brittle solids fracture develop...
Human as Real-Time Sensors of Social and Physical Events: A Case Study of Twitter and Sports Games
Real-Time Sensors Social Physical Events Twitter Sports Games Case
2011/9/14
In this work, we study how Twitter can be used as a sensor to detect frequent and diverse social and physical events in real-time. We devise efficient data collection and event recognition solutions t...
Real complex systems are inherently time-varying. Thanks to new communication systems and novel technologies, it is today possible to produce and analyze social and biological networks with detailed i...
“From ages immemorial, the means universally used to mark off the passage of time has been the apparent motions of the celestial bodies; and the measurement of time whether by hours of day and night, ...
Statistical physics cannot explain why a thermodynamic arrow of time exists,unless one postulates very special and unnatural initial conditions. Yet, we argue that statistical physics can explain why ...
Time-delay of classical and quantum scattering processes: a conceptual overview and a general definition
Time-delay classical quantum scattering processes conceptual overview general definition
2010/11/8
We present a step by step introduction to the notion of time-delay in classical and quantum mechanics, with the aim of clarifying its foundation at a conceptual level. In doing so, we motivate the in...
Generation of time-bin entangled photon pairs using a quantum-dot cavity system
time-bin entangled photon pairs quantum-dot cavity system
2010/11/4
We present a scheme to realize a deterministic solid state source of time-bin entangled photon pairs using cavity-assisted stimulated Raman adiabatic passage (STIRAP) in a single quantum dot. The quan...
Testing nonlocality over 12.4 km of underground fiber with universal time-bin qubit analyzers
Testing nonlocality time-bin qubit analyzers
2010/3/10
We experimentally demonstrate that the nonlocal nature of time-bin entangled photonic qubits persists when one or two qubits of the pair are converted to polarization qubits. This is possible by imple...
Time Delay Interferometry for LISA with one arm dysfunctional
time delay interferometry one arm dysfunctional
2010/3/18
In order to attain the requisite sensitivity for LISA - a joint space mission of the ESA and NASA- the laser frequency noise must be suppressed below the secondary noises such as the optical path nois...
Analysis of instabilities and pattern formation in time fractional reaction-diffusion systems
instabilities pattern formation time fractional reaction-diffusion systems
2010/4/6
We analyzed conditions for Hopf and Turing instabilities to occur in two-component fractional reaction-diffusion systems. We showed that the eigenvalue spectrum and fractional derivative order mainly ...
Finite-time synchronization of non-autonomous chaotic systems with unknown parameters
non-autonomous chaotic systems unknown parameters
2010/4/7
Adaptive control technique is adopted to synchronize two identical non-autonomous systems with unknown parameters in finite time. A virtual unknown parameter is introduced in order to avoid the unknow...
Initial States and the Various Long-Time-Behaviors of the Unstable Multilevel Systems
Initial States the Various Long-Time-Behaviors the Unstable Multilevel Systems
2010/10/13
The decaying behavior of both the survival S(t) and total P(t) probabilities for unstable multilevel systems at long times is investigated by using the N-level Friedrichs model. The long-time asymptot...
Intrinsic Time-Uncertainties and Decoherence: Comparison of 4 Models
Intrinsic Time-Uncertainties and Decoherence 4 Models
2010/10/13
Four models of energy decoherence are discussed from the common perspective of intrinsic time-uncertainty. The four authors — Milburn, Adler, Penrose, and myself — have four different approaches. The ...