771 Result(s)
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Article
An improved iterative reconstruction algorithm for traveltime tomography
Traveltime tomography is a technique to reconstruct acoustic, seismic, or electromagnetic wave-speed distributions from first arrival traveltime data. The ray paths that should be used for tomographic techniqu...
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Article
Microcalorimetric study on the germination of seeds
The power-time curves of the germination of different rice and tree seeds have been studied by using a microcalorimeter set up by ourselves. Some characteristic values have been obtained from these curves in d...
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Article
Interaction of conormal waves with strong and weak singularities for semi-linear equations
We first define a kind of new function space, called the space of twice conormal distributions. With some estimates on these function spaces, we can prove that if there exist two characteristic hypersurfaces b...
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Article
Defect properties of GaAs by positron annihilation
Positron lifetime and Doppler Broadening spectra have been measured for three types of GaAs semiconductors. Direct evidence of native vacancy-type defects is found in the semi-insulating (SI-type) and n-type s...
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Article
Temperature dependence of the static structure factor of the non-simple liquid metal, Cd
Report a calculation of the static structure factors at any temperature for the non-simple liquid metal Cd by the method of model parameter based on the hard sphere cluster (HSC) model. In comparison with avai...
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Article
Color image computer desktop printing system
Color image printing technique on ink jetting printer is introduced. Color shading method such as dithering, Amplitude Modulation (AM) screening and Frequency Modulation (FM) screening is presented. Some solut...
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Article
The synergistic effect of quaternary ammonium cations on the corrosion inhibition of Fe by inorganic anions
The synergistic effect of tetrabutylammonium cation (TBA+) or N-hexadecylpyridinium cation (HDP+) and SCN− or I− in 0.5 mol·L−1 H2SO4 solution on the corrosion inhibition of Armco iron was investigated by potenti...
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Article
Nucleotide sequence of polyhedrin gene of LsNPV and analysis of baculovirus polyhedron proteins
The intact 741 bp polyhedrin gene of LsNPV was sequenced by Silver, Sequencing System, and shares 90.6% and 97.0% nucleotide identity, 97.2% and 97.6% amino acid identity with PfNPV and MdNPV polh genes respec...
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Article
On convergence of singular integral operators with respect to path of integration
Givenf being Hölder continuous in a regionG⊂C. For the Cauchy principal integral $$I(\Gamma ,f) = \frac{1}{{\pi i}} \int_\Gamma {\fra...
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Article
A finite difference approach to the diffusion equation in electrical conductivity tomography
In the study of electrical conductivity tomography using low frequency electromagnetic waves, the equation that describes the EM field is a diffusion equation. In this paper, a stable finite difference method ...
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Article
A neural network for weighted least-squares criteria of traveltime tomography
TH network has been applied successfully to linear optimum and some quadratic optimum problems. This paper discusses how to determine the gain function of the net amplifiers and choose appropriate parameters t...
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Article
Microcalorimetric study of the effect of porphyrin-cholesterol esters on cancer cells HL-60
By using an LKB-2277 Bioactivity Monitor, the effect of porphyrin-cholesterol esters on cancer cells HL-60 were examined at 25°C. There is a difference in the shape of the thermogenesis curve samong different ...
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Article
Studies on introduction of arrowhead proteinase inhibitor gene intoN. tobacco protoplasts
The Arrowhead Proteinase Inhibitor (API) gene was introduced into the protoplasts of mesophyll cells ofN. tobacco by PEG-mediated. The transformed protoplasts underging differentiation of callus and regeneration ...
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Article
Parallel (M−N)SVD algorithms on the SIMD computers
LetA bem byn matrix,M andN be positive definite matrices of orderm andn respectively. This paper presents an efficient method for computing (M−N) singular value decomposition ((M−N) SVD) ofA on a cube connected s...
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Article
On the communication-efficiency of parallel systems
This paper defines the communication-efficiency, which is directly related to the cost-efficiency, and studies the relationship between the communication-efficiency and the processor-efficiency when they are a...
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Article
Vectorization and parallel computation of a CFD code on YH-2 parallel supercomputer
MacCormack explicit scheme and Baldwin-Lomax algebraic turbulent model are employed to solve the axisymmetric compressible Navier-Stokes equations for the numerical simulation of the supersonic external flow i...
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Article
The applications of evolutionary computation in software reliability
Software reliability models(SRMs) are the theoretic foundation of software reliability. However, the existence of intrinsic limitation of the preposition in traditional model building confirnes the application...
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Article
Ruminate method—Software pipelining on nested loops
This paper offers a new method to solve the problem of software pipelining on nested loops. We first introduce our new software pipelining method—Ruminate Method, which can optimize program with nested loops. ...
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Article
An inductive method with genetic algorithm for learning phrase-structure-rule of natural language
This paper describes an Inductive method with genetic search which learns attribute based phraserule of natural language from set of preclassified examples. Every example is described with some attributes/valu...
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Article
Analysis of multigrid parallelization on message passing computers
This paper studies the complexity of multigrid parallelization on message passing computers. Parallelization is by domain decomposition. An optimal strip decomposition is proposed. With natural ordering of the...
