12 Result(s)
within
Physics
** Dong-ming
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Chapter and Conference Paper
On the Implementation of Absolute Meridian Observations in Low Latitude Stations
Mao et al. (1983) have originally stated that in order to record the transit times of a star at meridian transit as well as at prime verticale transit the chassis of the instrument would have to have two pairs...
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Chapter and Conference Paper
Photoelectric Astrolabe and Astrolabe Star Catalogues
At the Shaanxi Observatory, regular observations with the prototype of the photoelectric astrolabe PAI have been carried out since 1973. Three photoelectric astrolabes of type Mark II (PAII) were mounted at th...
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Chapter and Conference Paper
Modernization of Chinese Photoelectric Astrolabes and Improvement of Optical Reference System
The features of the astrolabe are that:
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a span of 6 hour of R.A. of star positions can be tied in a group of observation of 2...
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Chapter and Conference Paper
Research on the Errors in Determination of Precise Optical Positions of Radio Sources
To link the optical reference frame to extragalactic radio frame, an observation program is in progress in Purple Mountain Observatory (PMO) and Shanghai Observatory. In this program, 70 extragalactic sources ...
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Article
Experiments and simulation on laser bending of silicon sheet with different thicknesses
Based on the requirements for silicon sheets with different thickness in MEMS, and according to the experimental results, the element of the temperature distribution was investigated by calculation with ANSYS,...
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Article
A novel OFDM-ROF system based on OCS and asymmetrical filtering technique
A novel radio-over-fiber (ROF) system has been proposed and simulated, which is based on orthogonal frequency division multiplexing (OFDM) and asymmetrical filtering of optical carrier suppression (OCS) techni...
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Article
Electronic transport through a Majorana bound state coupled to a T-shaped quantum-dot system with Coulomb interaction
Using the Green’s function technique, we respectively investigate the electron transport properties of two spin components through the system of a T-shaped double quantum dot structure coupled to a Majorana b...
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Article
Discriminatively learning for representing local image features with quadruplet model
Traditional hand-crafted features for representing local image patches are evolving into current data-driven and learning-based image feature, but learning a robust and discriminative descriptor which is capab...
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Article
Magnetic Transition in Nonmetal N- and F-Do** g-ZnO Monolayer with Different Concentrations
In this paper, the geometrical, electronic, and magnetic properties of nonmetal (N, F) atom do** g-ZnO monolayer supercell forming 6.25, 12.5, and 25% concentrations have been investigated comprehensively us...
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Article
Femtosecond laser processing stainless steel foil and its Fourier spectrum detection
In this paper, we use femtosecond laser pulse to scribe 304 stainless steel foil, detect the Fourier transform infrared spectrum of the sample before and after processing, confirm the “cold processing” and “th...
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Article
Electromyography signal segmentation method based on spectral subtraction backtracking
Surface electromyography (EMG) is a bioelectrical signal that recognizes speech contents in a non-acoustic form. Activity detection is an important research direction in EMG research. However, in the low signa...
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Article
Modeling and Analysis of Flow Through the Orifice of Still in Dilution Refrigerator
The cooling capacity of a typical dilution refrigerator is mainly determined by the circulating flow of the He-3 in the system, which is usually realized by the external circulation pump. In order to increase ...
