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In this study, a particle swarm optimization (PSO) algorithm was implemented to quantitatively analyze the Lead (Pb) concentration in water. Thirty-five samples with different concentrations of Pb(NO3)2 were detected by laser-induced breakdown spectroscopy (LIBS). The strong spectral line of 405.78 nm was selected as the analytical line. The PSO algorithm was created, trained and tested by IPb. The...
Intra/inter-band cross-modulations due to Mach-Zehnder modulator nonlinearity in multi-band radio-over-fiber systems is investigated. Signal quality degradation induced by cross-modulation for single-/multi-band scalar and vector signals is analyzed theoretically and validated by experiments.
Defect density is the ratio between the number of defects and software size. Properly assessing defect density in evolutionary product development requires a strong tool and rigid process support that enables defects to be traced to the offending source code. In addition, it requires waiting for field defects after the product is deployed. To ease the calculation in practice, a proposed method approximates...
This paper perfects the simulation model of mass collaborative product development. A new structure of simulation model was presented, and the model considering the participants' learning effect in this paper, which improve the model's reliability. Structure and modeling steps of the simulation were studied, and the model performance under the two different situation "participants learning effect"and...
This paper proposes a multi-criteria evaluation model for assessing industry agglomeration degree referring to Changzhou Hi-Tech Zone. By using Analytic Hierarchy Process (AHP) method, the model combines qualitative analysis and quantitative measurement, which is derived from Changzhou Industry Information System for Changzhou Hi-Tech Zone, resulting in a reasonable evaluation scientifically and authoritatively.
The Five-hundred-meter Aperture Spherical radio Telescope (FAST) will be the largest single dish radio telescope upon completion. As one of the three critical innovations of the FAST project, the active reflector system is composed of thousands of reflector elements, actuators etc. The reliability study on the active reflector system is of great importance. The paper introduces a reliability analysis...
For application researches of the detection for the gas signal source, a method for orientation estimation of the gas signal source in the two-dimensional space and its algorithm are presented in the paper. In the method, a mode of dual-line gas sensor array is applied to sample the signals of the gas concentration in real time, and the time delay estimation, an approach of the signal processing,...
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