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Research in Astronomy and Astrophysics 2020年第8期20卷 129-142页

作者： Yang Yang Zhi-Bo Jiang Zhi-Wei Chen Shao-Bo Zhang Shu-Ling Yu yi-ping ao Purple Mountain Observatory Chinese Academy of SciencesNanjing 210008China University of Science and Technology of China Chinese Academy of SciencesHefei 230026China Center astronomy and Space Sciences China Three Gorges UniversityYichang 443002China

Gravitational accretion accumulates the original *** process is crucial for us to understand the initial phases of star *** the specific infall profiles in optically thick and thin lines,we searched the clumps with infall motion from the Milky Way Imaging Scroll Painting(MWISP)CO data in previous *** this study,we selected 133 sources as a sub-sample for further research and *** excitation temperatures of these sources are between 7.0 and 38.5 K,while the H2 column densities are between 10^21 and 10^23 cm^-*** have observed optically thick lines HCO+(1-0)and HCN(1-0)using the DLH 13.7-m telescope,and found 56 sources with a blue profile and no red profile in these two lines,which are likely to have infall motions,with a detection rate of 42%.This suggests that using CO data to restrict the sample can effectively improve the infall detection *** these confirmed infall sources are 43 associated with Class O/I young stellar objects(YSOs),and 13 which are *** 13 sources are probably associated with the sources in the earlier evolutionary *** comparison,the confirmed sources that are associated with Class O/I YSOs have higher excitation temperatures and column densities,while the other sources are colder and have lower column *** infall velocities of the sources that we confirmed are between 10^-1 to 10^0 km s^-1,which is consistent with previous studies.

关键词： stars:formation ISM:kinematics and dynamics ISM:molecules radio lines:ISM

Erratum:“In Search for Infall Motion in molecular clumps Ⅱ:HCO+(1-0)and HCN(1_0)Observations toward a Sub-sample of Infall Candidates”(2020,RAA,20,115)

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Research in Astronomy and Astrophysics 2021年第10期21卷 279-280页

In the paper“In Search for Infall Motion in molecular clumps II:HCO+(1-0)and HCN(1-0)Observations toward a Sub-sample of Infall Candidates”by Yang etal.(RAA 2020 Vol.20 No.8,115(14pp),doi:10.1088/1674C4527/20/8/115)... 详细信息

关键词： Observation sample

Dissipation-free approach for realizing non-Hermitian dynamics in a superconducting circuit

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Science China(Physics,Mechanics & Astronomy) 2025年第3期Mechanics & Astronomy) .卷 78-95页

作者： yi-Hao Kang Yang Xiao Yu Wang Qi-ping Su Chui-ping Yang School of Physics Hangzhou Normal University Fujian Key Laboratory of Quantum Information and Quantum Optics Fuzhou University Department of Physics Fuzhou University

Non-Hermitian dynamics exhibits a wealth of surprising and potentially useful phenomena. However, it is typically realized by coupling a system with thermal reservoirs, which makes the system suffer from thermal fluctuations associated with the dissipation. Here, we propose a dissipation-free approach to realize non-Hermitian dynamics using a superconducting circuit composed of two resonators and a superconducting qutrit. The non-Hermiticity arises in the dynamical matrix for the evolution of the two resonators in the Heisenberg picture, via a photon-number non-conserved dynamics. The energy spectrum of the non-Hermitian dynamical matrix can be retrieved by measuring the state of the two resonators, and a phase transition of the energy spectrum can be observed by varying the control parameters. In the realization of the non-Hermitian dynamics, the dissipation of the system and the post-selection are not required. Thus, the approach is implemented in a deterministic way, and the reservoir-induced noise is suppressed. Numerical simulations indicate that the energy spectrum of the non-Hermitian dynamical matrix obtained via the measurement of the resonators is in accordance with the theoretical prediction. Moreover, we demonstrate the parity discrimination for the state of two four-level qudits as an application, exhibiting the potential of the non-Hermitian dynamics in the field of quantum measurement. This work opens a new avenue for the realization of non-Hermitian dynamics and may have a significant implication in exploring the non-Hermitian phenomena.

关键词： non-Hermitian dynamics superconducting circuit non-Hermitian phase transition

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Constrained Networked Predictive Control for Nonlinear Systems Using a High-Order Fully Actuated System Approach

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IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 478-480页

作者： yi Huang Guo-ping Liu yi Yu Wenshan Hu the School of Electrical Engineering and Automation Wuhan University IEEE the Center for Control Science and Technology Southern University of Science and Technology the Department of Electrical and Electronic Engineering The Hong Kong Polytechnic University

Dear Editor,In this letter, a constrained networked predictive control strategy is proposed for the optimal control problem of complex nonlinear highorder fully actuated (HOFA) systems with noises. The method can effectively deal with nonlinearities, constraints, and noises in the system, optimize the performance metric, and present an upper bound on the stable output of the system.

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Edge-aware Feature Aggregation Network for Polyp Segmentation

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Machine Intelligence Research 2025年第1期22卷 101-116页

作者： Tao Zhou yizhe Zhang Geng Chen yi Zhou Ye Wu Deng-ping Fan PCA Lab Key Laboratory of Intelligent Perception and Systems for High-dimensional Information of Ministry of EducationSchool of Computer Science and EngineeringNanjing University of Science and TechnologyNanjing210094China School of Computer Science and Engineering Northwestern Polytechnical University(NPU)Xi’an710129China School of Computer Science and Engineering Southeast UniversityNanjing211189China Computer Vision Lab ETH ZürichZürich8092Switzerland

Precise polyp segmentation is vital for the early diagnosis and prevention of colorectal cancer(CRC)in clinical ***,due to scale variation and blurry polyp boundaries,it is still a challenging task to achieve satisfactory segmentation performance with different scales and *** this study,we present a novel edge-aware feature aggregation network(EFA-Net)for polyp segmentation,which can fully make use of cross-level and multi-scale features to enhance the performance of polyp ***,we first present an edge-aware guidance module(EGM)to combine the low-level features with the high-level features to learn an edge-enhanced feature,which is incorporated into each decoder unit using a layer-by-layer ***,a scale-aware convolution module(SCM)is proposed to learn scale-aware features by using dilated convolutions with different ratios,in order to effectively deal with scale ***,a cross-level fusion module(CFM)is proposed to effectively integrate the cross-level features,which can exploit the local and global contextual ***,the outputs of CFMs are adaptively weighted by using the learned edge-aware feature,which are then used to produce multiple side-out segmentation *** results on five widely adopted colonoscopy datasets show that our EFA-Net outperforms state-of-the-art polyp segmentation methods in terms of generalization and *** implementation code and segmentation maps will be publicly at https://***/taozh2017/EFANet.

关键词： Colorectal cancer polyp segmentation edge-aware guidance module scale-aware convolution module cross-level fusion module

Accelerating homogenization kinetics and enhancing hot-workability of as-cast nickel-based superalloy via prior hot-deformation

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Journal of Iron and Steel Research International 2025年第1期32卷 215-226页

作者： Jia-jun Chen Yang Zhou Hao-ran Han Xian-guang Zhang Goro Miyamoto ping-mei Tang Dong-ping Xiao Jian-hui Fu Peng Shi yi-wu Pei Jian Zhang State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China Chengdu Advanced Metal Materials Industrial Technology Institute Co. Ltd.Chengdu 610300SichuanChina Institute for Materials Research Tohoku UniversitySendai 980-8577Aoba-KuJapan

Enhancing homogenization efficiency and hot-workability is the key issue for wrought superalloys in the industry.A novel approach for simultaneous accelerating the homogenization kinetics and improving hot-workability via a simple way of prior hot-deformation was proposed,which was not widely accepted for wrought *** homogenization efficiency is increased by 40%-70%via performing 10%-20%prior *** theoretical and experimental analyses revealed that the increment in homogenization efficiency is mainly attributed to the decrease in interdendritic-segregation spacing,and thus the necessary diffusion distance,rather than that of *** addition,dynamic and static recrystallizations occurred during the prior hot-deformation and diffusion-annealing processes,and the grains were significantly refined even after the ***,the size of the precipitates was refined as *** enhanced the hot-workability of the homogenized ingot for the subsequent cogging process.

关键词： Nickel-based superalloy Homogenization kinetics Prior hot-deformation Grain size Hot workability

Real-Time Error Analysis of Multi-Channel Capacitive Voltage Transformer Using Co-Prediction Matrix

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Journal of Power and Energy Engineering 2025年第1期13卷 1-17页

作者： Jiusong Hu ao Xiong Yongqi Liu Guaxuan Xiao yi Zhong College of Railway Transportation Hunan University of Technology Zhuzhou China Wasion Group Co. Ltd. Changsha China State Grid Zhejiang Leqing Power Supply Co. Ltd. Leqin China Shengtong Electric New Energy Technology Co. Ltd. Jurong China

Capacitive voltage transformers (CVTs) are essential in high-voltage systems. An accurate error assessment is crucial for precise energy metering. However, tracking real-time quantitative changes in capacitive voltage transformer errors, particularly minor variations in multi-channel setups, remains challenging. This paper proposes a method for online error tracking of multi-channel capacitive voltage transformers using a Co-Prediction Matrix. The approach leverages the strong correlation between in-phase channels, particularly the invariance of the signal proportions among them. By establishing a co-prediction matrix based on these proportional relationships, The influence of voltage changes on the primary measurements is mitigated. Analyzing the relationships between the co-prediction matrices over time allows for inferring true measurement errors. Experimental validation with real-world data confirms the effectiveness of the method, demonstrating its capability to continuously track capacitive voltage transformer measurement errors online with precision over extended durations.

关键词： Capacitive Voltage Transformers Co-Prediction Matrix High-Voltage Measurement error

Optical transmittance and pulse shape discrimination of polystyrene/poly(methyl methacrylate)-based plastic scintillators

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Nuclear Science and Techniques 2025年第1期36卷 94-102页

作者： yi-Yao Liang ying-Du Liu Pu-Sen Wang Jie Bao Xiao-ping Ouyang School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Nuclear Data Key Laboratory China Institute of Atomic EnergyBeijing 102413China

Polymethyl methacrylate(PMMA)is an optically transparent thermoplastic with favorable processing *** this study,a series of plastic scintillators are prepared via thermal polymerization,and the impact of PMMA content on their transparency and pulse shape discrimination(PSD)ability is *** fabricated samples,comprising a polystyrene(PS)-PMMA matrix,30.0 wt%2,5-diphenyloxazole(PPO),and 0.2 wt%9,10-diphenylanthracene(DPA),exhibit high transparency with transmissivity ranging from 70.0 to 90.0%(above 415.0 nm)and demonstrate excellent n/γdiscrimination *** increased with increasing PMMA content across the entire visible light ***,the PSD performance gradually deteriorated when the aromatic matrix was replaced with *** scintillator containing 20.0 wt%PMMA demonstrated the best stability concerning PSD properties and relative light yields.

关键词： Neutron detection Plastic scintillation Pulse shape discrimination Polymethyl-methacrylate Polystyrene

红色文化资源数字化保护和传承:价值、成效及路径

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中南民族大学学报(人文社会科学版) 2025年第1期45卷 74-84,184页

作者：易玲石傲胜中南大学法学院/文化遗产研究院湖南长沙410083

数字技术的发展为红色文化资源保护和传承提供了新路径。红色文化资源保护和传承的时代呼吁、当代价值、政策支持是推动其数字化的现实基础。数字环境下红色文化资源开发利用形式多样,并取得一定成效,但实践中仍面临产业发展滞后、平台... 详细信息

数字技术的发展为红色文化资源保护和传承提供了新路径。红色文化资源保护和传承的时代呼吁、当代价值、政策支持是推动其数字化的现实基础。数字环境下红色文化资源开发利用形式多样,并取得一定成效,但实践中仍面临产业发展滞后、平台建设欠缺、传播效能不够、法治供给不足等问题。为更好地促进红色文化资源数字化实践,应分别从落实两创方针、凸显科技赋能、创新传播机制、完善法治保障四个方面着手,推动红色文化资源理论研究阐释和现实产业输出,促进文化科技深度融合,搭建红色文化资源数字平台。国内构建立体多元传播矩阵,国外转变红色叙事模式,同时加快红色文化资源国家专门立法和相关政策制定,以期促进红色文化资源的开发利用,实现其数字化的创造传承和创新发展。

关键词：红色文化资源数字化保护和传承红色文旅红色立法

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Effects of Bifidobacterium lactis BLa80 on fecal and mucosal flora and stem cell factor/c-kit signaling pathway in simulated microgravity rats

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World Journal of Gastroenterology 2025年第1期31卷 93-109页

作者： ping Zhang ying Zhu Pu Chen Tong Zhou Zhe-yi Han Jun Xiao Jian-Feng Ma Wen Ma Peng Zang ying Chen Graduate School Hebei North UniversityZhangjiakou 075000Hebei ProvinceChina Key Laboratory of Aerospace Nutrition and Food Engineering China Astronaut Research and Training CenterBeijing 100094China Department of Gastroenterology The Air Force Medical CenterBeijing 100142China Department of Blood Transfusion Air Force Medical CenterBeijing 100142China

BACKGROUND Simulated microgravity environment can lead to gastrointestinal motility *** pathogenesis of gastrointestinal motility disorders is closely related to the stem cell factor(SCF)/c-kit signaling pathway associated with intestinal flora and Cajal stromal ***,intestinal flora can also affect the regulation of SCF/c-kit signaling pathway,thus affecting the expression of Cajal stromal *** cells are the pacemakers of gastrointestinal *** To investigate the effects of Bifidobacterium lactis(***)BLa80 on the intestinal flora of rats in simulated microgravity and on the gastrointestinal motility-related SCF/c-kit *** The internationally recognized tail suspension animal model was used to simulate the microgravity environment,and 30 rats were randomly divided into control group,tail suspension group and drug administration tail suspension group with 10 rats in each group for a total of 28 *** tail group was given *** BLa80 by intragastric administration,and the other two groups were given water intragastric administration,the concentration of intragastric administration was 0.1 g/mL,and each rat was 1 mL/***&eosin staining was used to observe the histopathological changes in each segment of the intestine of each group,and the expression levels of SCF,c-kit,extracellular signal-regulated kinase(ERK)and p-ERK in the gastric antrum of each group were detected by Western blotting and *** fecal flora and mucosal flora of rats in each group were detected by 16S *** Simulated microgravity resulted in severe exfoliation of villi of duodenum,jejunum and ileum in rats,marked damage,increased space between villi,loose arrangement,shortened columnar epithelium of colon,less folds,narrower mucosal thickness,reduced goblet cell number and crypts,and significant improvement after probiotic *** microgravity reduced the expressions of SCF and c-kit,and increased the express

关键词： Simulated microgravity Rat Intestinal flora Gastrointestinal motility Stem cell factor/c-kit signaling pathway