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Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He Li Li Sai Wang shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

The effects of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents:a meta-analysis

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Neural Regeneration Research 2025年第5期20卷 1513-1520页

作者： Xueyun shao Longfei He Yangyang Liu Physical Education School Shenzhen UniversityShenzhenGuangdong ProvinceChina Shenzhen Institute of Neuroscience ShenzhenGuangdong ProvinceChina

Brain-derived neurotrophic factor is a crucial neurotrophic factor that plays a significant role in brain health. Although the vast majority of meta-analyses have confirmed that exercise interventions can increase brain-derived neurotrophic factor levels in children and adolescents, the effects of specific types of exercise on brain-derived neurotrophic factor levels are still controversial. To address this issue, we used meta-analytic methods to quantitatively evaluate, analyze, and integrate relevant studies. Our goals were to formulate general conclusions regarding the use of exercise interventions, explore the physiological mechanisms by which exercise improves brain health and cognitive ability in children and adolescents, and provide a reliable foundation for follow-up research. We used the Pub Med, Web of Science, Science Direct, Springer, Wiley Online Library, Weipu, Wanfang, and China National Knowledge Infrastructure databases to search for randomized controlled trials examining the influences of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents. The extracted data were analyzed using Review Manager 5.3. According to the inclusion criteria, we assessed randomized controlled trials in which the samples were mainly children and adolescents, and the outcome indicators were measured before and after the intervention. We excluded animal experiments, studies that lacked a control group, and those that did not report quantitative results. The mean difference(MD;before versus after intervention) was used to evaluate the effect of exercise on brain-derived neurotrophic factor levels in children and adolescents. Overall, 531 participants(60 children and 471 adolescents, 10.9–16.1 years) were included from 13 randomized controlled trials. Heterogeneity was evaluated using the Q statistic and I^(2) test provided by Review Manager software. The meta-analysis showed that there was no heterogeneity among the studies(P = 0.67,

关键词： adolescents brain-derived neurotrophic factor children exercise meta-analysis randomized controlled trials

fMRI-based Decoding of Visual Information from Human Brain Activity: A Brief Review

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International Journal of Automation and computing 2021年第2期18卷 170-184页

作者： Shuo Huang Wei shao mei-ling Wang Dao-Qiang Zhang College of Computer Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China MIIT Key Laboratory of Pattern Analysis and Machine Intelligence Nanjing 211106China

One of the most significant challenges in the neuroscience community is to understand how the human brain *** progress in neuroimaging techniques have validated that it is possible to decode a person′s thoughts,memories,and emotions via functional magnetic resonance imaging(i.e.,fMRI)since it can measure the neural activation of human brains with satisfied spatiotemporal ***,the unprecedented scale and complexity of the fMRI data have presented critical computational bottlenecks requiring new scientific analytic *** the increasingly important role of machine learning in neuroscience,a great many machine learning algorithms are presented to analyze brain activities from the fMRI *** this paper,we mainly provide a comprehensive and up-to-date review of machine learning methods for analyzing neural activities with the following three aspects,i.e.,brain image functional alignment,brain activity pattern analysis,and visual stimuli *** addition,online resources and open research problems on brain pattern analysis are also provided for the convenience of future research.

关键词： Functional magnetic resonance imaging(fMRI) functional alignment brain activity brain decoding visual stimuli reconstruction

Machine Learning for Brain Imaging Genomics Methods:A Review

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Machine Intelligence Research 2023年第1期20卷 57-78页

作者： mei-ling Wang Wei shao Xiao-Ke Hao Dao-Qiang Zhang College of Computer Science and Technology Nanjing University of Aeronautics and AstronauticsNanjing 211106China Key Laboratory of Pattern Analysis and Machine Intelligence Ministry of Industry and Information TechnologyNanjing 211106China School of Artificial Intelligence Hebei University of TechnologyTianjin 300401China

In the past decade,multimodal neuroimaging and genomic techniques have been increasingly *** an interdiscip-linary topic,brain imaging genomics is devoted to evaluating and characterizing genetic variants in individuals that influence phenotyp-ic measures derived from structural and functional brain *** technique is capable of revealing the complex mechanisms by macroscopic intermediates from the genetic level to cognition and psychiatric disorders in *** is well known that machine learn-ing is a powerful tool in the data-driven association studies,which can fully utilize priori knowledge(intercorrelated structure informa-tion among imaging and genetic data)for association *** addition,the association study is able to find the association between risk genes and brain structure or function so that a better mechanistic understanding of behaviors or disordered brain functions is *** this paper,the related background and fundamental work in imaging genomics are first ***,we show the univari-ate learning approaches for association analysis,summarize the main idea and modelling in genetic-imaging association studies based on multivariate machine learning,and present methods for joint association analysis and outcome ***,this paper discusses some prospects for future work.

关键词： Brain imaging genomics machine learning multivariate analysis association analysis outcome prediction

非有机溶剂萃取催化荧光光度法测定痕量亚硝酸根

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韶关学院学报 2011年第12期32卷 41-45页

作者：柯育梅李少玲李国清泉州师范学院化学与生命科学学院福建泉州362000

在磷酸介质中以亚硝酸根催化溴酸钾氧化罗丹明B为研究体系,探讨了该体系在聚乙二醇-2000(PEG-2000)中的萃取催化行为及其影响因素,建立了催化荧光光度法测定痕量亚硝酸根的新方法.结果表明:该方法的检出限为1.65×10-7 g/L,线性范围为0.... 详细信息

在磷酸介质中以亚硝酸根催化溴酸钾氧化罗丹明B为研究体系,探讨了该体系在聚乙二醇-2000(PEG-2000)中的萃取催化行为及其影响因素,建立了催化荧光光度法测定痕量亚硝酸根的新方法.结果表明:该方法的检出限为1.65×10-7 g/L,线性范围为0.053-0.23 mg/L,用于测定蔬菜中痕量亚硝酸根的效果良好.

关键词：萃取亚硝酸根罗丹明B 溴酸钾

Robust predictive control of polytopic uncertain systems with both state and input delays

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Journal of Systems Engineering and Electronics 2007年第3期18卷 616-621页

作者： Lu mei shao Huihe Inst. of Automation Shanghai Jiaotong Univ. Shanghai 200030 P. R. China

A robust model predictive control algorithm for discrete linear systems with both state and input delays subjected to constrained input control is presented, where the polytopic uncertainties exist in both state matrices and input matrices. The algorithm optimizes an upper bound with respect to a state feedback control law. The feedback control law is presented based on the construction of a parameter-dependent Lyapunov function. The above optimization problem can be formulated as a LMI-based optimization. The feasibility of the optimization problem guarantees that the algorithm is robustly stable. The simulation results verify the effectiveness of the proposed algorithm.

关键词： predictive control robust control time-delay system linear matrix inequality.

A Review on Ultrasonic-Assisted Forming:Mechanism,Model,and Process

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Chinese Journal of Mechanical Engineering 2021年第5期34卷 147-170页

作者： Guangda shao Hongwei Li mei Zhan Shaanxi Key Laboratory of Precision Forming Technology and Equipment School of Materials Science and Engineering Northwestern Polytechnical University Xi’an China

Compared with conventional forming processes,ultrasonic-assisted forming technology with a high frequency and small amplitude can significantly improve the forming quality of *** to the advantages of reduced forming force,improved surface quality,avoidance of forming defects,and strengthened surface structure,ultrasonic-assisted forming technology has been applied to increasingly advanced forming processes,such as incremental forming,spinning,and ***,in the ultrasonic-assisted forming process,there are multiple ultrasonic mechanisms,such as the volume effect and surface *** explanation of the effect of ultrasonic vibration(UV)on plastic deformation remains controversial,hindering the development of related ***,many researchers have proposed many new theories and technologies for ultrasonic-assisted *** summarize these developments,systematic discussions on mechanisms,theoretical models,and forming performances are provided in this *** this basis,the limitations of the current study are *** addition,an outlook for ultrasonic-assisted forming is proposed:efficient and stable UV systems,difficulty forming components with complex geometry,explanation of the in-depth mechanism,a systematic theoretical prediction model,and multi-field-coupling energy-assisted forming are considered to be hot spots in future *** present review enhances existing knowledge of ultrasonic-assisted forming,and facilitates a fast reference for related researchers.

关键词： Ultrasonic vibration Forming Mechanism Model Processing performance

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金融法制定中的基本范畴与体系结构研究

新疆师范大学学报（哲学社会科学版） 2025年第2期46卷 17-29,F0002页

作者：刘少军中国政法大学民商经济法学院北京102249 中国政法大学金融法研究中心北京102249

党的十八届三中全会以来,党和政府高度重视金融立法和修法工作。全国人大常委会立法工作计划的预备审议项目要求研究包括金融监管制度在内的金融方面的综合性法律,党的二十届三中全会提出制定金融法,是落实党的二十大报告和2023年中央... 详细信息

党的十八届三中全会以来,党和政府高度重视金融立法和修法工作。全国人大常委会立法工作计划的预备审议项目要求研究包括金融监管制度在内的金融方面的综合性法律,党的二十届三中全会提出制定金融法,是落实党的二十大报告和2023年中央金融工作会议精神、实现建设金融强国目标的重要步骤。制定金融法的核心工作是对现行金融法规进行全面整合,实现金融规范和金融监管的全面覆盖。这就需要对金融法的基本范畴进行研究阐释,对其调整的范围,即金融、金融业及其机构、工具、市场、业务、行为等进行严格界定;必须构建逻辑清晰、结构严谨的金融法体系结构,明晰其目标与原则、要素法体系、行业法体系、体例与结构等问题。

关键词：金融的界定金融业界定目标与原则要素法体系行业法体系体例与结构

Receding horizon H_∞ control for constrained time-delay systems

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Journal of Systems Engineering and Electronics 2009年第2期20卷 363-370页

作者： Lu mei Jin Chengbo shao Huihe Inst. of Automation Shanghai Jiaotong Univ. Shanghai 200240 P. R. China Dept. of Fieldbus Shanghai Automation Instrument Co. Ltd. Shanghai 200233 P. R. China Dept. of Product Design Shanghai Gaoke Valve Manufactory Co. Ltd. Shanghai 200092 P. R. China

A receding horizon Hoo control algorithm is presented for linear discrete time-delay system in the presence of constrained input and disturbances. Disturbance attenuation level is optimized at each time instant, and the receding optimization problem includes several linear matrix inequality constraints. When the convex hull is applied to denote the saturating input, the algorithm has better performance. The numerical example can verify this result.

关键词： receding horizon control Hoo control time-delay constrained input