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Friction 2024年第6期12卷 1283-1298页

作者： Junhyeon SEO Prahalada rao Bart RAEYMAEKERS Department of Mechanical Engineering Virginia TechBlacksburgVA 24061USA Grado Department of Industrial and Systems Engineering Virginia TechBlacksburgVA 24061USA

Numerically generating synthetic surface topography that closely resembles the features and characteristics of experimental surface topography measurements reduces the need to perform these intricate and costly ***,existing algorithms to numerically generated surface topography are not well-suited to create the specific characteristics and geometric features of as-built surfaces that result from laser powder bed fusion(LPBF),such as partially melted metal particles,porosity,laser scan lines,and ***,we present a method to generate synthetic as-built LPBF surface topography maps using a progressively growing generative adversarial *** qualitatively and quantitatively demonstrate good agreement between synthetic and experimental as-built LPBF surface topography maps using areal and deterministic surface topography parameters,radially averaged power spectral density,and material ratio *** ability to accurately generate synthetic as-built LPBF surface topography maps reduces the experimental burden of performing a large number of surface topography ***,it facilitates combining experimental measurements with synthetic surface topography maps to create large data-sets that facilitate,*** as-built surface topography to LPBF process parameters,or implementing digital surface twins to monitor complex end-use LPBF parts,amongst other applications.

关键词： additive manufacturing surface topography synthetic surface topography generative adversarial networks

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一种基于数据库描述的电文参数通用解算方法

中国惯性技术学报 2019年第5期27卷 580-588页

作者：饶爱水李永刚房新兵汪毅郭力兵李清梅中国卫星海上测控部

卫星导航电文参数解算通常采用硬编码方式实现,电文格式、参数编排、参数系数等信息均内嵌在程序代码中,代码可读性、可维护性和可扩充性差。为解决基于超帧、主帧和子帧的固定帧结构的电文参数通用解算问题,提出了一种采用数据库描述... 详细信息

卫星导航电文参数解算通常采用硬编码方式实现,电文格式、参数编排、参数系数等信息均内嵌在程序代码中,代码可读性、可维护性和可扩充性差。为解决基于超帧、主帧和子帧的固定帧结构的电文参数通用解算问题,提出了一种采用数据库描述电文帧格式、电文参数编排方式以及电文参数结果定制的方法。设计了电文参数通用解算算法以及时间阈值判断算法,通过数据库配置实现不同格式导航电文参数的解算,参数结果根据数据库配置控制输出。采用实际接收的电文进行了测试,结果表明,所提出的方法具有良好的通用性,正确解算了GPS LNAV电文、北斗D1电文和北斗D2电文等3种导航电文参数,电文参数解算实现100%覆盖,参数结果组合输出100%可配置,电文参数增加、删除和修改等完全自适应,避免了电文帧丢失、电文参数更新造成的同一组参数不匹配问题。

关键词：导航电文 GPS LNAV GPS CNAV 北斗D1电文北斗D2电文

Enhanced Hybrid Equilibrium Strategy in Fog-Cloud Computing Networks with Optimal Task Scheduling

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Computers, Materials & Continua 2024年第5期79卷 2647-2672页

作者： Muchang rao Hang Qin School of Computer Science Yangtze UniversityJingzhou434000China

More devices in the Intelligent Internet of Things(AIoT)result in an increased number of tasks that require low latency and real-time responsiveness,leading to an increased demand for computational *** computing’s low-latency performance issues in AIoT scenarios have led researchers to explore fog computing as a complementary ***,the effective allocation of resources for task execution within fog environments,characterized by limitations and heterogeneity in computational resources,remains a formidable *** tackle this challenge,in this study,we integrate fog computing and cloud *** begin by establishing a fog-cloud environment framework,followed by the formulation of a mathematical model for task ***,we introduce an enhanced hybrid Equilibrium Optimizer(EHEO)tailored for AIoT task *** overarching objective is to decrease both the makespan and energy consumption of the fog-cloud system while accounting for task *** proposed EHEO method undergoes a thorough evaluation against multiple benchmark algorithms,encompassing metrics likemakespan,total energy consumption,success rate,and average waiting *** experimental results unequivocally demonstrate the superior performance of EHEO across all assessed ***,in the most favorable conditions,EHEO significantly diminishes both the makespan and energy consumption by approximately 50%and 35.5%,respectively,compared to the secondbest performing approach,which affirms its efficacy in advancing the efficiency of AIoT task scheduling within fog-cloud networks.

关键词： Artificial intelligence of things fog computing task scheduling equilibrium optimizer differential evaluation algorithm local search

载波频率号提取算法对箭载GLONASS速度计算的影响

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电讯技术 2015年第2期55卷 187-192页

作者：饶爱水张龙王振平汪毅中国卫星海上测控部江苏江阴214431

在GLONASS测速原理的基础上,研究了载波频率号解算方法对箭载GLONASS测速的影响,发现载波频率号解算方法错误将导致测速精度变差,并从理论上分析了载波频率号错误引起的测速精度误差为目标飞行速度的1/2850-1/220倍.设计了4种不同的载... 详细信息

在GLONASS测速原理的基础上,研究了载波频率号解算方法对箭载GLONASS测速的影响,发现载波频率号解算方法错误将导致测速精度变差,并从理论上分析了载波频率号错误引起的测速精度误差为目标飞行速度的1/2850-1/220倍.设计了4种不同的载波频率号解算算法,采用火箭飞行试验数据对算法进行了测试,结果表明,通过卫星数判断载波频率号以及通过保留位判断载波频率号能获得正确结果,直接计算载波频率号以及丢弃保留串无法获取到全部正确结果;通过保留位判断载波频率号的算法具有最小的首次测速时间,比通过卫星数判断载波频率号的算法至少缩短30s以上,载波频率号解算错误引起的测速精度误差与理论值分析基本一致.

关键词： GLONASS 导航电文频道号速度精度运载火箭实时定位

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箭载GPS接收机伪距观测量及观测时间修正

测绘科学 2016年第8期41卷 106-110,81页

作者：饶爱水刘冰胡健王振平张龙中国卫星海上测控部技术部江苏江阴214431

针对某型号箭载接收机仅下传信号发射时刻的小数部分而导致地面设备求解伪距时存在整秒模糊度,以及由于伪距测量时标更新频率小于伪距采样频率导致的地面设备定位精度变差与100ms模糊度问题,该文提出了一种伪距观测量及观测时间的实时... 详细信息

针对某型号箭载接收机仅下传信号发射时刻的小数部分而导致地面设备求解伪距时存在整秒模糊度,以及由于伪距测量时标更新频率小于伪距采样频率导致的地面设备定位精度变差与100ms模糊度问题,该文提出了一种伪距观测量及观测时间的实时修正方法。首先,分析运载火箭、GPS卫星以及地球三者之间的位置关系;然后,计算随火箭飞行高度变化的伪距理论值;最后,根据伪距理论值的不同特性,把运载火箭飞行区域划分为4个区域,并针对不同区域设计了相应的实时修正算法。基于火箭飞行实测数据的实验结果表明,该算法能够解决整秒模糊度、100ms模糊度以及伪距观测值与伪距观测时间不一致等问题,最终定位精度也能够满足试验要求。

关键词： GPS接收机伪距观测量运载火箭实时修正伪距理论值

Enhancing lithium-sulfur battery performance with In_(2)O_(3)-In_(2)S_(3)@NSC heterostructures:Synergistic effects of double barrier and catalytic transformation

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Journal of Materials Science & Technology 2024年第2期169卷 105-114页

作者： Deqing He Chunyu Zhu Yutao Huo Zhonghao rao School of Energy and Environmental Engineering Hebei University of TechnologyTianjin 300401China Hebei Key Laboratory of Thermal Science and Energy Clean Utilization Hebei University of TechnologyTianjin 300401China School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou 221116China

The sluggish redox reaction kinetics of lithium polysulfides(LiPSs)are considered the main obstacle to the commercial application of lithium-sulfur(Li-S)*** accelerate the conversion by catalysis and inhibit the shuttling of soluble LiPSs in Li-S batteries,a solution is proposed in this *** solution involves fabrication of N,S co-doped carbon coated In_(2)O_(3)/In_(2)S_(3)heterostructure(In_(2)O_(3)-In_(2)S_(3)@NSC)as a multifunctional host material for the *** In_(2)O_(3)-In_(2)S_(3)@NSC composite can reduce the Gibbs free energy for the conversion reactions of LiPSs,which results in superior *** synergy between different components in In_(2)O_(3)-In_(2)S_(3)@NSC and the unique 3D structure facilitate ion and electron transport in Li-S *** In_(2)O_(3)-In_(2)S_(3)@NSC/Li 2 S 6 cathode exhibits excellent rate capacity,with a capacity of 599 mAh g−1 at 5.5 C,and good cycle stability,with a capacity of 436 mAh g^(−1)after 1000 cycles at 1 ***,this study proposes a promising solution to improve the energy storage properties of Li-S batteries,which could potentially facilitate the commercialization of Li-S batteries.

关键词： Li-S battery Multifunctional host material Synergy Heterostructures Energy storage properties

Allogenic microglia replacement:A novel therapeutic strategy for neurological disorders

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Fundamental Research 2024年第2期4卷 237-245页

作者： Yanxia rao Bo Peng Department of Laboratory Animal Science MOE Frontiers Center for Brain ScienceFudan UniversityShanghai 200032China Department of Neurosurgery Huashan HospitalInstitute for Translational Brain ResearchState Key Laboratory of Medical NeurobiologyMOE Frontiers Center for Brain ScienceMOE Innovative Center for New Drug Development of Immune Inflammatory DiseasesFudan UniversityShanghai 200000China Co-Innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu 226001China

Microglia are resident immune cells in the central nervous system(CNS)that play vital roles in CNS development,homeostasis and disease *** defects in microglia lead to microglial dysfunction,which in turn leads to neurological *** correction of the specific genetic defects in microglia in these disorders can lead to therapeutic *** genetic defect correction approaches are dependent on viral vectorbased genetic defect ***,the viruses used in these approaches,including adeno-associated viruses,lentiviruses and retroviruses,do not primarily target microglia;therefore,viral vector-based genetic defect corrections are ineffective in *** replacement is a novel approach to correct microglial genetic defects via replacing microglia of genetic defects with allogenic healthy *** this paper,we systematically review the history,rationale and therapeutic perspectives of microglia replacement,which would be a novel strategy for treating CNS disorders.

关键词： Microglia Replacement Microglia replacement Microglia depletion Microglia-free niche CSF1R

Clinical application of COVID-19 vaccine in liver transplant recipients

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Hepatobiliary & Pancreatic Diseases International 2024年第4期23卷 339-343页

作者： Feng-Chao Liu Man Xie Wei rao Division of Hepatology Liver Disease CenterThe Affiliated Hospital of Qingdao UniversityQingdao 266000China Organ Transplantation Center The Affiliated Hospital of Qingdao UniversityQingdao 266000China Institute of Organ Donation and Transplantation of Qingdao University Qingdao 266000China Department of Gastroenterology The Affiliated Hospital of Qingdao UniversityQingdao 266000China

Background:Solid organ transplant(SOT)activities,such as liver transplant,have been greatly influenced by the pandemic of coronavirus disease 2019(COVID-19),a disease caused by severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Immunosuppressed individuals of liver transplant recipients(LTRs)tend to have a high risk of COVID-19 infection and related ***,COVID-19 vaccination has been recommended to be administered as early as possible in *** sources:The keywords“liver transplant”,“SARS-CoV-2”,and“vaccine”were used to retrieve articles published in ***:The antibody response following the 1st and 2nd doses of vaccination was disappointingly low,and the immune responses among LTRs remarkably improved after the 3rd or 4th dose of *** the 3rd or 4th dose of COVID-19 vaccine increased the antibody titer,a proportion of patients remained ***,recent studies showed that SARS-CoV-2 vaccine could trigger adverse events in LTRs,including allograft rejection and liver ***:This review provides the recently reported data on the antibody response of LTRs following various doses of vaccine,risk factors for poor serological response and adverse events after vaccination.

关键词： Liver transplant COVID-19 SARS-CoV-2 Vaccine Antibody response

Recent progress of MgO-based materials in CO_(2) adsorption and conversion:Modification methods,reaction condition,and CO_(2) hydrogenation

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Chinese Chemical Letters 2024年第5期35卷 57-65页

作者： Zixuan Zhu Xianjin Shi Yongfang rao Yu Huang Key Laboratory of Aerosol Chemistry&Physics State Key Laboratory of Loess and Quaternary Geology(SKLLQG)Institute of Earth EnvironmentChinese Academy of Sciences(CAS)Xi’an 710061China Center for Excellence in Quaternary Science and Global Change Chinese Academy of SciencesXi’an 710061China University of Chinese Academy of Sciences Beijing 100049China Department of Environmental Science and Engineering Xi’an Jiaotong UniversityXi’an 710049China

Integrated CO_(2) capture and conversion of(ICCC)is one of the most effective solutions to reduce anthropogenic CO_(2) emissions,which has attracted extensive public *** functional materials(DFMs),including adsorbent and catalyst,are the key components to achieve *** oxide(MgO)is an ideal adsorbent for ICCC,since it is characterized by high theoretical adsorption capacity,low cost,low energy consumption and extensive *** can also be used as DFMs in combination with the Ni *** not only can act as an adsorbent in DFMs but also enhance the catalytic performance of *** review summarizes the advantages and modification methods of MgO as adsorbent and the influence of its adsorption conditions on the adsorption ***,the important role of MgO in facilitating the catalytic conversion of CO_(2) is *** research focuses are proposed for the development of MgO based DFMs with high adsorption capacity,high stability,conversion,and selectivity as well as low cost and energy consumption.

关键词： CO_(2) ICCC MgO Adsorption Conversion