Search Results - Song Yu

Nearly every electronic journal's web site offers a "Search" function for its users in addition to supplying tables of contents and full-text access to articles. The purpose of this study was to analyze and compare the search features on five chemistry journal publishers' web si...

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IntroductionEntrepreneurial resources and abilities are pivotal factors influencing the success of new farmers’ ventures. Understanding how these elements drive entrepreneurial growth is of significant practical importance.MethodsGrounded in a framework system for entrepreneurial competence (compris...

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Amidst the furor of serials price increases, there is a steadily growing segment of the serials landscape with prices that can't be beat, that is to say, free. Many scholarly journals are freely available in electronic format (no subscription fee or membership required), but there has been lit...

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Apanteles heterusiae Wilkinson is a major larval parasitoid of Diaphania pyloalis Walker in Zhejiang, China. In this paper, the biological characteristics of A. heterusiae are reported. Under the natural conditions of Zhejiang, its average rate of parasitism was about 16.8% from 2000 to 2002. The li...

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Privacy amplification is an indispensable step in postprocessing of continuous-variable quantum key distribution (CV-QKD), which is used to distill unconditional secure keys from identical corrected keys between two distant legal parties. The processing speed of privacy amplification has a significa...

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A high-gain, dispersion-tolerant, and linear phase-modulated analog photonic link is proposed and demonstrated based on full spectrum optical sideband processing (FSOSP). In the proposed link, upper sidebands and lower sidebands are transmitted separately in different optical paths. By suppressing t...

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The Jurassic conglomerate aquifer in the coal seam roof of Zhuxianzhuang Coal Mine in the Huaibei Coalfield exhibits significant karst and water-rich heterogeneity, and its geological patterns remain poorly understood. This study systematically investigates the lithology, stratigraphy, structural ch...

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We propose and demonstrate a scheme of stable radio frequency (RF) phase dissemination for multiaccess trunk fiber link by passive frequency mixing with anti-group velocity dispersion (GVD) and anti-backscattering function. The propagation delay of the entire fiber link is detected by a round-trip p...

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A wideband spurious-free dynamic range (SFDR) expander that uses optical distortion control technique is proposed in this study for microwave photonic links. A third-order intermodulation distortion (IMD3), which is sensed by extracting the modulated optical carrier, will be monitored and attenuated...

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Balanced homodyne detector (BHD) that can measure the field quadratures of coherent states has been widely used in a range of quantum information technologies. Generally, the BHD tends to suffer from narrow bands and an expanding bandwidth behavior usually traps into a compromise with the gain, elec...

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A novel phase-modulation direct-demodulation microwave photonic link for improving the spurious-free dynamic range (SFDR) is proposed and experimentally demonstrated. In the proposed system, two different C-band optical wavelengths are modulated by a phase modulator in opposite directions. After com...

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Abstract:Aiming at the problem that intelligent networked vehicles need a large amount of data to make safe and reasonable lane-changing decisions in complex dynamic traffic environments, the characteristics of vehicle lane-changing behaviors are deeply studied.Firstly, the driving data of NGSIM...

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This paper proposes a stable radio frequency (RF) transfer scheme based on phase modulation. The passive compensation method is used to compensate the phase variations. The use of only one mixer reduces the power consumption during the frequency mixing process. By utilizing a phase modulator, the is...

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Shallow gas can cause many disasters, and it is reported in many marine engineering constructions. For this, it is imperative to understand the impact of gas on the mechanical behaviors of soil. This study investigated the influence of undrained triaxial compression tests on dense gassy sand commonl...

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A narrow-linewidth all-polarization-maintaining (PM) Brillouin erbium-doped fiber laser (BEFL) is proposed and demonstrated experimentally, which employs erbium-doped fiber (EDF) acting as both the linear gain and the Brillouin gain medium. In order to realize a single longitudinal mode (SLM) operat...

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In this paper, we demonstrate ultrastable radio-frequency (RF) transfer over long-haul optical fiber link. Our stabilized RF transfer technique is based on high-performance dual phase locked loops (dual-PLL) configuration which improves signal to noise ratio (SNR) of the round trip transmitted signa...

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A convolutional neural network combined with long short-term memory (CNN-LSTM) phase compensation method (PCM) is proposed and demonstrated, where CNN is employed to extract spatial features, and LSTM is used to capture temporal features and realize the long-term predictions of residual phase fluctu...

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Histopathological staining remains the fibrosis diagnostic gold standard yet suffers from staining artifacts and variability. Nonlinear optical techniques (e.g., spontaneous fluorescence, Second Harmonic Generation) enhance accuracy but struggle with rapid trace-level detection of fibrosis. To addre...

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