Now showing items 11-20 of 3019
Bidirectional branch and bound for controlled variable selection Part I : principles and minimum singular value criterion
The minimum singular value (MSV) rule is a useful tool for selecting controlled variables (CVs) from the available measurements. However, the application of the MSV rule to large-scale problems is difficult, as all feasible ...
Comparison of plant-wide oscillation detection methods
Plant-wide oscillations are common in many industrial processes. During the past few years, various methods have been proposed for the detection of plant-wide oscillations, including methods based on the autocorrelation ...
Primes in quadratic progressions on average
In this paper, we establish a theorem on the distribution of primes in quadratic progressions on average.
Quantum entanglement and the self-trapping transition in polaronic systems
We revisit from a quantum-information perspective a classic problem of polaron theory in one dimension. In the context of the Holstein model we show that a simple analysis of quantum entanglement between excitonic and ...
Role of Sb on the growth and optical properties of 1.55 μm GaInN(Sb)As/GaNAs quantum well structures by molecular beam expitaxy
High-quality GaInN(Sb)As/GaNAs double quantum wells (QWs) which emit at 1.54 mu m wavelength at room temperature with a narrow linewidth of similar to 34 meV (12 meV at 5 K) were fabricated by molecular-beam epitaxy on ...
Spectroscopic characterization of 1.3 μm GaInNAs quantum well structures grown by metal-organical vapour phase epm,itaxy
We report optical studies of high-quality 1.3 μm strain-compensated GaInNAs/GaAs single-quantum-well structures grown by metalorganic vapor phase epitaxy. Photoluminescence excitation sPLEd spectroscopy shows clearly the ...
Selective modification of band gap in GaInNAs/GaAs structures by quantum well intermixing
We report an investigation of selective quantum-well intermixing (QWI) in 1.3-mum GaInNAs/GaAs multi quantum wells by silica-cap-induced disordering processes. After thermal annealing under specific conditions, controlled ...
Level set method for positron emission tomography
In positron emission tomography (PET), a radioactive compound is injected into the body to promote a tissue-dependent emission rate. Expectation maximization (EM) reconstruction algorithms are iterative techniques which ...
Steiner triple systems intersecting in pairwise disjoint blocks
Two Steiner triple systems (X,A) and (X,B) are said to intersect in m pairwise disjoint blocks if |A ∩ B| = m and all blocks in A ∩ B are pairwise disjoint. For each v, we completely determine the possible values of m such ...
A water-soluble β-cyclodextrin derivative possessing a fullerene tether as an efficient photodriven DNA-cleavage reagent
A simple synthetic route for a water-soluble cyclodextrin–fullerene conjugate based on the Diels–Alder reaction between anthryl-cyclodextrin and fullerene has been presented. Aided by the ...