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价格感受、预期指数走向不同，揭示抑制通胀关键时刻

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海外经济评论 2007年第39期 7-8页

作者： vincent chan

[瑞士信贷8月24日]2007年开始，中国的通胀压力出现明显增大的迹象。如果通胀率上升的趋势持续下去，就可能对中国的利率前景产生严重影响。最近，瑞士信贷上调了2007、2008年中国通胀率的预期值，分别调至4．8％和6．5％，并把一年期... 详细信息

[瑞士信贷8月24日]2007年开始，中国的通胀压力出现明显增大的迹象。如果通胀率上升的趋势持续下去，就可能对中国的利率前景产生严重影响。最近，瑞士信贷上调了2007、2008年中国通胀率的预期值，分别调至4．8％和6．5％，并把一年期贷款利率的预期值由2006年年底的6．12％上调至2008年年底的8．19％。我们之所以上调预期通胀率，一方面是出于对结构性的食品价格上涨的忧虑，另一方面则是由于中国的消费者和厂商的通胀预期出现了变化的迹象。

关键词：价格上涨通胀率感受贷款利率预期值中国消费者信贷

临界梯度模型的优化及集成模拟中高能量粒子模块的搭建

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物理学报 2023年第21期72卷 82-94页

作者：邹云鹏陈锡熊陈伟核工业西南物理研究院成都610041 通用原子能加州CA 92186-5608 中国科学技术大学核科学与技术学院合肥230026

基于临界梯度模型,使用TGLFEP和EPtran两个程序可以模拟分析阿尔芬本征模引起的高能量粒子输运问题.本文在原有模型的基础上,加入了两点改进使模拟结果更接近实验.其一,考虑阈值剖面的演化过程.判断阈值的物理量由密度梯度(dn/dr)改为... 详细信息

基于临界梯度模型,使用TGLFEP和EPtran两个程序可以模拟分析阿尔芬本征模引起的高能量粒子输运问题.本文在原有模型的基础上,加入了两点改进使模拟结果更接近实验.其一,考虑阈值剖面的演化过程.判断阈值的物理量由密度梯度(dn/dr)改为归一化的密度梯度((dn/dr)/(n/a)),并且使用TGLFEP模拟证明阈值与高能量粒子密度成反比例关系,也就是说,当密度降低时,阈值会增大.第二,考虑有限轨道宽度效应.使用OBRIT程序计算高能量粒子的损失锥,并输入到EPtran程序中,从而增加了一种高能量粒子的损失通道.利用DⅢ-D#142111和#153071进行实验验证,结果表示改进后的模型更接近实验.最后,利用神经网络代替TGLFEP计算临界梯度,并实现EPtran的并行计算以缩短运行时间.以此建立一个EP模块并加入到OMFIT集成模拟中,模拟结果表示当阿尔芬本征模驱动高能量粒子输运,会导致芯部的压强和电流降低,从而提升当地的安全因子,改变平衡位形.

关键词：高能量粒子阿尔芬本征模临界梯度模型输运

Nonlinear Characteristic Analysis of Gas-Interconnected Quasi-Zero Stiffness Pneumatic Suspension System:A Theoretical and Experimental Study

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Chinese Journal of Mechanical Engineering 2024年第3期37卷 338-352页

作者： Xinwei Jiang Xing Xu Tianling Shi vincent Akolbire Atindana Automotive Engineering Research Institute Jiangsu UniversityZhenjiang 212013China

Because of significantly changed load and complex and variable driving road conditions of commercial vehicles,pneumatic suspension with lower natural frequencies is widely used in commercial vehicle suspension *** ever,traditional pneumatic suspension system is hardly to respond the greatly changed load of commercial vehicles To address this issue,a new Gas-Interconnected Quasi-Zero Stiffness Pneumatic Suspension(GIQZSPS)is presented in this paper to improve the vibration isolation performance of commercial vehicle suspension systems under frequent load *** new structure adds negative stiffness air chambers on traditional pneumatic suspension to reduce the natural frequency of the *** can adapt to different loads and road conditions by adjusting the solenoid valves between the negative stiffness air ***,a nonlinear mechanical model including the dimensionless stiffness characteristic and interconnected pipeline model is derived for GIQZSPS *** the nonlinear mechanical model of GIQZSPS system,the force transmissibility rate is chosen as the evaluation index to analyze ***,a testing bench simulating 1/4 GIQZSPS system is designed,and the testing analysis of the model validation and isolating performance is carried *** results show that compared to traditional pneumatic suspension,the GIQZSPS designed in the article has a lower natural *** the system can achieve better vibration isolation performance under different load states by switching the solenoid valves between air chambers.

关键词： Pneumatic suspension Quasi-zero stiffness system Gas-interconnected system Nonlinear dynamic modeling

Reinforcement Learning-Empowered Graph Convolutional Network Framework for Data Integrity Attack Detection in Cyber-Physical Systems

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CSEE Journal of Power and Energy Systems 2024年第2期10卷 797-806页

作者： Edeh vincent Mehdi Korki Mehdi Seyedmahmoudian Alex Stojcevski Saad Mekhilef School of Science Computingand Engineering TechnologiesSwinburne University of TechnologyMelbourneAustralia

The massive integration of communication and information technology with the large-scale power grid has enhanced the efficiency, safety, and economical operation of cyber-physical systems. However, the open and diversified communication environment of the smart grid is exposed to cyber-attacks. Data integrity attacks that can bypass conventional security techniques have been considered critical threats to the operation of the grid. Current detection techniques cannot learn the dynamic and heterogeneous characteristics of the smart grid and are unable to deal with non-euclidean data types. To address the issue, we propose a novel Deep-Q-Network scheme empowered with a graph convolutional network (GCN) framework to detect data integrity attacks in cyber-physical systems. The simulation results show that the proposed framework is scalable and achieves higher detection accuracy, unlike other benchmark techniques.

关键词： Deep reinforcement learning graph convolutional network heterogeneous smart grid network

Next generation multiple access for IMT towards 2030 and beyond

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Science China(Information Sciences) 2024年第6期67卷 448-450页

作者： Zhiguo DING Robert SCHOBER Pingzhi FAN H.vincent POOR Department of Computer and Information Engineering Khalifa University Department of Electrical and Electronic Engineering University of Manchester Institute for Digital Communications Friedrich Alexander-University Erlangen-Nurnberg (FAU) CSNMT International Cooperation Research Center (MoST) Southwest Jiaotong University Department of Electrical and Computer Engineering Princeton University

Multiple access techniques are fundamental to the design of wireless communication systems,since many crucial components of such systems depend on the choice of the multiple access technique[1].For example,the use of ...

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Fluidization and Transport of Vibrated Granular Matter:A Review of Landmark and Recent Contributions

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Fluid Dynamics & Materials Processing 2024年第1期20卷 1-29页

作者： Peter Watson Sebastien vincent Bonnieu Marcello Lappa Department of Mechanical and Aerospace Engineering University of StrathclydeGlasgowUK European Space Agency European Space Research and Technology CentreNoordwijkNetherland

We present a short retrospective review of the existing literature about the dynamics of(dry)granular matter under the effect of *** main objective is the development of an integrated resource where vital information about past findings and recent discoveries is provided in a single *** attention is paid to those works where successful synthetic routes to as-yet unknown phenomena were *** landmark results are analyzed,while smoothly blending them with a history of the field and introducing possible categorizations of the prevalent *** no classification is perfect,and it is hard to distillate general properties out of specific observations or realizations,two possible ways to interpret the existing results are defined according to the type of forcing or the emerging(ensuing)regime of *** particular,first results concerning the case where vibrations and gravity are concurrent(vertical shaking)are examined,then the companion situation with vibrations perpendicular to gravity(horizontal shaking)is *** classes are introduced as follows:(1)Regimes where sand self-organizes leading to highly regular geometrical“pulsating”patterns(thin layer case);(2)Regimes where the material undergoes“fluidization”and develops an internal multicellular convective state(tick layers case);(3)Regimes where the free interface separating the sand from the overlying gas changes inclination or develops a kind a patterned configuration consisting of stable valleys and mountains or travelling waves;(4)Regimes where segregation is produced,i.e.,particles of a given size tend to be separated from the other grains(deep containers).Where possible,an analogy or parallelism is drawn with respect to the companion field of fluid-dynamics for which the assumption of“continuum”can be applied.

关键词： Granular materials vibrations fluidization flowability symmetry breaking

Assembly of peptide nanostructures with controllable sizes

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Nano Research 2024年第1期17卷 151-161页

作者： Dan Cheng Fan Jia Yun-Bao Jiang vincent P.Conticello Tao Jiang The MOE Key Laboratory of Spectrochemical Analysis and Instrumentation Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China Department of Chemistry Emory UniversityAtlanta 30033USA

Controlled peptide assembly offers significant promise to develop synthetic supramolecular nanostructures to display material and biological properties that mimic protein assemblies in *** the progress in forming peptide nanostructures of various morphology,there exists a distinct gap between natural and synthetic assembly systems in terms of size *** nanostructures with a narrow size distribution that can be tuned over a wide range of length-scales is essential for applications that require precise spacing between *** approach provides the opportunity to correlate materials and biological properties of interest with assembly *** this review,we discuss representative endeavors over the past two decades for design of size-controllable peptide nanostructures using tunable building *** mechanisms for size control,e.g.,molecular frustration,template-directed peptide assembly,and multi-component peptide co-assembly,will also be *** also demonstrate the applicable scopes of these strategies and suggest potential future avenues for scientific advances in this field.

关键词： peptide assembly controllable size template multi-component

The Artificial Disc Nucleus and Other Strategies for Replacement of the Nucleus Pulposus:Past,Present and Future Designs for an Emerging Surgical Solution

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Engineered Regeneration

Engineered Regeneration 2024年第2期5卷 269-281页

作者： Greg Sacks vincent DeStefano Claire Parker Ryan Lebens Harry Mushlin Renaissance School of Medicine at Stony Brook University Stony BrookNYUSA

Nucleus Pulposus(NP)Replacement is a developing surgical methodology for the treatment of pathology related to degeneration of intervertebral discs(IVDs).This article provides necessary context regarding the patholo-gies treated with this technology,the biomechanical structure and function of the IVD,and the procedures this technology aims to ***,it provides an overview and discussion of commercial and experimental preformed and in situ curing prosthesis designs reported in the scientific literature and summarizes the results of biomechanical and clinical studies evaluating their *** and updated information on the most recent research into NP replacement with novel hydrogel and tissue engineering(TE)strategies is *** of the NP allows for potential improvement in the treatment of degenerative spinal pathologies through minimally invasive surgical techniques.

关键词： Nucleus Pulposus Intradiscal Prosthesis Hydrogel Artificial Disc Implant Spine Surgery

Systematic review of risk factors,prognosis,and management of colorectal signet-ring cell carcinoma

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World Journal of Gastrointestinal Oncology 2024年第5期16卷 2141-2158页

作者： Frederiek Nuytens vincent Drubay Clarisse Eveno Florence Renaud Guillaume Piessen Department of Digestive and Oncological Surgery University LilleClaude Huriez University HospitalLille 59000France Department of Digestive and Hepatobiliary/Pancreatic Surgery AZ GroeningeKortrijk 8500Belgium Cambrai Hospital Center and Sainte Marie Group of Hospitals of The Catholic Institute of LilleCambrai 59400France CNRS InsermUMR9020-U1277-CANTHER-CancerUniversity LilleCHU LilleLille 59000France

BACKGROUND Colorectal signet-ring cell carcinoma(CSRCC)is a rare clinical entity which accounts for approximately 1%of all colorectal *** multiple studies concerning this specific topic have been published in the past decades,the pathogenesis,associated risk factors,and potential implications on treatment are still poorly *** the low incidence,historically confusing histological criteria have resulted in confusing ***,the rising incidence of CSRCC along with relatively young age at presentation and associated dismal prognosis,highlight the actual interest to synthesize the known literature regarding *** To provide an updated overview of risk factors,prognosis,and management of *** A literature search in the MEDLINE/PubMed database was conducted with the following search terms used:‘Signet ring cell carcinoma’and‘colorectal’.Studies in English language,published after January 1980,were *** included in the qualitative synthesis were evaluated for content concerning epidemiology,risk factors,and clinical,diagnostic,histological,and molecular features,as well as metastatic pattern and therapeutic *** possible,presented data was extracted in order to present a more detailed overview of the *** In total,67 articles were included for qualitative analysis,of which 54 were eligible for detailed data *** has a reported incidence between 0.1%-2.4%and frequently presents with advanced disease stage at the time of *** is associated with an impaired overall survival(5-year OS:0%-46%)and a worse stagecorrected outcome compared to mucinous and not otherwise specified *** systematic use of exploratory laparoscopy to determine the presence of peritoneal metastases has been *** is the mainstay of treatment,although the rates of curative resection in CSRCC(21%-82%)are lower compared to those in other histological *** case of peritoneal

关键词： Colorectal cancer Signet-ring cell histology Poorly cohesive cells Systematic review Risk factors Prognosis Therapeutic management