31 Result(s)
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Article
Organic thin film electroluminescent passive matrix display
Long life green-emitting matrix display based on organic light-emitting diode is reported. The pixel number is 96×60, equivalent pixel size 0.4×0.4 mm2, and the pixel gap 0.1 mm. An image with no crosstalk betwee...
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A stable blue organic electroluminescent material
In order to compare two kinds of blue electroluminescent materials, we have investigated two kinds of blue OLEDs with the similar structrue ITO/CuPc/NPB/JBEM: perylene/Alq/Mg:Ag [device(J)] and ITO/CuPc/NPB/DP...
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Article
A new distyrylarylene derivative used as blue light emitter in organic electroluminescent device
A new blue electroluminescent material, distyrylarylene(DSA) derivative, 4,4’-bis[2,2-(1-naphthyl, phenyl)vinyl]-1,1′-biphenyl(NPVBi) is designed and synthesized. The DSA derivative shows better thermal stabil...
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Article
Photon-induced borate groups transformation by femtosecond laser
In this paper, we put emphasis on the analysis the mechanism of the photon-induced frequency conversion β-BaB2O4 crystal inside a borate glass using femtosecond laser. Because of the nature of femtosecond laser’s...
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Red organic light-emitting diodes based on energy levels matching of dopant with the host materials
By do** red dye 4-dicyanomethylene-2-(tert-butyl)-6-methyl-4H-pyran(DCJTB) in the tris-(8-hydroxyquinolinato) metal Mq3(where M=Al, Ga, In) chelate complexes, a series of red-dopant organic light-emitting diode...
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Article
A hybrid dynamic programming method for concave resource allocation problems
Concave resource allocation problem is an integer programming problem of minimizing a nonincreasing concave function subject to a convex nondecreasing constraint and bounded integer variables. This class of pr...
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Article
An improved MDC-based ORB-DCT method for video streaming over the internet
One of the most interesting questions of video streaming over the Internet is packet loss. Some error resilient technologies have been proposed to overcome quality decrease of reconstructed video occurred due ...
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Mössbauer study on Fe-doped TiO2 by high-energy ball milling
The structural evolution of Fe-doped TiO2 by high-energy ball milling was investigated by X-ray diffraction and Mössbauer spectroscopy. The results show that the original anatase-TiO2 transforms to srilankite-typ...
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Article
Complex amplitude distribution for compensation of refractive index mismatch on 3D optical storage recording system
The complex amplitude distribution which can compensate for the spherical aberration caused by mismatch on interface between recording material and immersion material (air) on three-dimensional optical storage...
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Article
An improved spatio-temporal-SNR FGS video coding scheme using motion compensation on enhancement layers
In this paper an effective MC + FGSST structure is explored, which is appropriate for scalable video coding. The structure obtains spatio-temporal-SNR fine granular scalability, and achieves high coding effici...
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Article
Code mechanical solidification and verification in MEMS security devices
The virtual machine of code mechanism (VMCM) as a new concept for code mechanical solidification and verification is proposed and can be applied in MEMS (micro-electromechanical systems) security device for hi...
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Parallel computing for finite element structural analysis using conjugate gradient method based on domain decomposition
Parallel finite element method using domain decomposition technique is adapted to a distributed parallel environment of workstation cluster. The algorithm is presented for parallelization of the preconditioned...
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Article
Linear complexity of Ding generalized cyclotomic sequences
Minimal polynomials and linear complexity of binary Ding generalized cyclotomic sequences of order 2 with the two-prime residue ring Z pq are obtained by Bai in 2005. In this paper, we obtain line...
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Article
Solution of an inverse problem for “fixed-fixed” and “fixed-free” spring-mass systems
The tridiagonal coefficient matrix for the “fixed-fixed” spring-mass system was obtained by changing spring length. And then a new algorithm of the inverse problem was designed to construct the masses and the ...
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Article
Modified possibilistic clustering model based on kernel methods
A novel model of fuzzy clustering using kernel methods is proposed. This model is called kernel modified possibilistic c-means (KMPCM) model. The proposed model is an extension of the modified possibilistic c-...
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Article
Crowdedness estimation approach based on stereovision for bus passengers
An estimation approach is proposed in this paper based on the binocular stereovision to collect the degree of crowdedness in public transports. The proposed method combines the disparity with frame differences...
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Article
Multiple models direct adaptive controller for a stochastic non-minimum phase system
For a stochastic non-minimum phase multivariable system, a multiple models direct adaptive controller is presented. It is composed of multiple fixed models with two adaptive models. The fixed models are used t...
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Article
Threshold controlled scheme of difference expansion techniques for reversible watermarking
Since Tian Jun proposed the difference expansion embedding technique, based on which, many reversible watermarking techniques were proposed. However, these methods do not perform well when the payload is high....
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Article
Effects of PbO-B2O3-CuV2O6 glass on the microwave dielectric properties of (Pb0.5Ca0.5)(Fe0.5Nb0.5)O3 ceramics
The influences of the PbO-B2O3-CuV2O6 (PBC) additives on the microwave dielectric properties of (Pb0.5Ca0.5) (Fe0.5Nb0.5)O3 (PCFN) ceramics were investigated as a function of sintering temperature from 950 °C to ...
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Article
Construction for M-arrays and application in structured light
M-arrays are random arrays in which an appropriate sub-window appears only once in the whole array. Coded structured light based on M-arrays is one-shot technique to rapidly acquire 3D information of unknown s...
