In order to solve the problem of algorithm convergence in Projective Non-negative Matrix Factorization (P-NMF), a method, called Convergent Projective Non-negative Matrix Factorization (CP-NMF), is proposed. In CP-NMF...
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In order to get effectively feature vectors of samples, a method of feature extraction is proposed based on non-negative matrix factorization (NMF) with approximate orthogonal constraint. An objective function is defi...
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The complex problems usually have netted structure, namely netted problems. The generally solving methods are based on sequence-searching or tree-searching of this kind of problems. But the structure of netted problem...
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In this paper, we constructed the architecture of mobile heterogeneous sensor network by introducing user equipments (UEs) in static wireless sensor network. We analyzed the failure of traditional static clustering al...
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Finite-difference tine-domain studies of a variety of cylinder arrays with nanometer-scale diameters (nanowires)interacting with light are *** and absorption cross sections for metallic nanoscale objects can be obtain...
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Finite-difference tine-domain studies of a variety of cylinder arrays with nanometer-scale diameters (nanowires)interacting with light are *** and absorption cross sections for metallic nanoscale objects can be obtained from such *** method is verified by comparing the analytical results for cylindrical *** the optical properties of Ag nanowires and study the explicit time-domain behavior of more cylinders.
The keys to electromagnetic simulation of arbitrary configuration of conducting surfaces by method of moments(MoM) are filling of impedance matrix elements and solving of linear equations.A CUDA (Compute Unified Devic...
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ISBN:
(纸本)9781479909216
The keys to electromagnetic simulation of arbitrary configuration of conducting surfaces by method of moments(MoM) are filling of impedance matrix elements and solving of linear equations.A CUDA (Compute Unified Device Architecture)enabled graphics processing unit (GPU) launched by NVIDIA company to accelerate implementation of the fast filling of impedance matrix in MoM based on Rao-Wllton-Glisson (RWG)basis functions was *** LU decomposition method is applied for the solving of linear equations, and a parallel method looping over squares is proposed in CUDA parallel platform, *** GPU numerical results for a usercreated benchmark structures are checked with comparison to CPU results.A noticeable speedup of the filling of impedance matrix (hundreds times) and solving of linear equations (about 10times) is achieved due to the employing of GPU.
Casimir effect is an observable macroscopic quantum *** has significant influence on micro-machine and *** on a generalization of the Lifshitz theory, we calculate Casimir force between the doped silicon slab and *** ...
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ISBN:
(纸本)9781479909216
Casimir effect is an observable macroscopic quantum *** has significant influence on micro-machine and *** on a generalization of the Lifshitz theory, we calculate Casimir force between the doped silicon slab and *** simulating, we can see that the magnitude and the direction of the Casimir force can be changed by varying doping level, the thickness of doped silicon slab, and filling factor of *** the force can be controlled by tuning these *** can be restoring force in a certain range of distance, which can provide a method to deal with the stability problem, and bring much meaningful results from the practical views.
The optical absorption properties of the thin-film solar cell (SC) is an important manifestation of its ***-difference frequency-domain (FDFD) method is employed to discretize the Maxwell's equations for the desig...
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ISBN:
(纸本)9781479909216
The optical absorption properties of the thin-film solar cell (SC) is an important manifestation of its ***-difference frequency-domain (FDFD) method is employed to discretize the Maxwell's equations for the designed *** relationship between the absorbed power density with the design structure and the incident angle were deeply *** numerical results can provide a reference for the design and optimization of thin film solar cells.
A faster numerical method based on FDTD for the four energy level atomic system is present here. The initial conditions for the electrons of each level are achieving while the fields are in steady state. Polarization ...
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A faster numerical method based on FDTD for the four energy level atomic system is present here. The initial conditions for the electrons of each level are achieving while the fields are in steady state. Polarization equation, rate equations of electronic population and Maxwell’s equations were used to describe the coupling between the atoms and electromagnetic wave. Numerical simulations, based on a finite-difference time-domain (FDTD) method, were utilized to obtain the population inversion and lasing threshold. The validity of the model and its theory is confirmed. The time, which we can observe the lasing phenomenon, is much shorter in our new model. Our model can be put into using in large scale simulations in mutiphysics to reduce the total simulated time.
A new uniplanar printed PIFA with a coupled-feed structure for LTE/WWAN operation is proposed. The PIFA consists of a coupled-feed loop structure and two separated radiators which are able to generate additional bands...
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A new uniplanar printed PIFA with a coupled-feed structure for LTE/WWAN operation is proposed. The PIFA consists of a coupled-feed loop structure and two separated radiators which are able to generate additional bands for the operation. The loop antenna path and the longer radiator can produce a dualresonance generating the required lower band exactly, while three wide bands contributed by the loop path, the loop path with the longer radiator and the loop path with the shorter radiator can form an operating band to cover the(1710–2690 MHz) band. Because of the small size of only 14×70 mm2, the antenna which can cover the required eight bands is therefore very suitable for the modern Ultra-thin laptops.
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