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Dynamic Offloading and Scheduling Strategy for Telematics Tasks Based on Latency Minimization

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Computers, Materials & Continua 2024年第8期80卷 1809-1829页

作者： Yu Zhou Yun Zhang Guowei Li Hang yang Wei Zhang Ting Lyu Yueqiang Xu North China Institute of Computing Technology Beijing Beijing100080China School of Computer and Communication Engineering University of Science and Technology BeijingBeijing100083China

In current research on task offloading and resource scheduling in vehicular networks,vehicles are commonly assumed to maintain constant speed or relatively stationary states,and the impact of speed variations on task offloading is often *** is frequently assumed that vehicles can be accurately modeled during actual motion ***,in vehicular dynamic environments,both the tasks generated by the vehicles and the vehicles’surroundings are constantly changing,making it difficult to achieve real-time modeling for actual dynamic vehicular network *** into account the actual dynamic vehicular scenarios,this paper considers the real-time non-uniform movement of vehicles and proposes a vehicular task dynamic offloading and scheduling algorithm for single-task multi-vehicle vehicular network scenarios,attempting to solve the dynamic decision-making problem in task offloading *** optimization objective is to minimize the average task completion time,which is formulated as a multi-constrained non-linear programming *** to the mobility of vehicles,a constraint model is applied in the decision-making process to dynamically determine whether the communication range is sufficient for task offloading and ***,the proposed vehicular task dynamic offloading and scheduling algorithm based on muti-agent deep deterministic policy gradient(MADDPG)is applied to solve the optimal solution of the optimization *** results show that the algorithm proposed in this paper is able to achieve lower latency task computation ***,the average task completion time of the proposed algorithm in this paper can be improved by 7.6%compared to the performance of the MADDPG scheme and 51.1%compared to the performance of deep deterministic policy gradient(DDPG).

关键词： Component vehicular dynamic task offloading resource scheduling

Strain-specific effect of Streptococcus thermophilus consumption on host physiology

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Food Science and Human Wellness 2024年第5期13卷 2876-2888页

作者： Peng Yu yang Jiang Yuqi Pan Min Guo Bo yang Xiaoming Liu Jianxin Zhao Hao Zhang Wei Chen State Key Laboratory of Food Science and Technology Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Research Laboratory for Pharmabiotics&Antibiotic Resistance Jiangnan UniversityWuxi 214122China Wuxi Translational Medicine Research Center and Jiangsu Translational Medicine Research Institute Wuxi Branch Wuxi 214122China National Engineering Research Centre for Functional Food Wuxi 214122China

Streptococcus thermophilus is one of the most prevalent species in stool samples of westernized populations due to continuous exposure to fermented dairy ***,few studies have explored the effect on host physiology by multiple *** strains and considered the inter-strain differences in regulating *** the present study,we investigated how four *** strains influenced the gut microbiota,mucin changes,and host metabolism after 28 days of intervention in conventional *** results indicated that the consumption of *** affected the host with strain *** four *** strains,DYNDL13-4 and DQHXNQ38M61,especially DQHXNQ38M61,had more effect on host physiology by modulating gut microbiota and host metabolism than LMD9 and *** of strains DYNDL13-4 and DQHXNQ38M61 resulted in more remarkable changes in amino acid metabolism and lipid metabolism than that of strains LMD9 and 4M6,which may be related to the elevation of intestinal Bifidobacterium by DYNDL13-4 and *** enriched Coriobacteriaceae UCG-002,Rikenellaceae RC9 gut group,and Lactobacillus only in the DQHXNQ38M61 group,had a close relationship with the prominent effect of DQHXNQ38M61 on regulating amino acid and lipid *** addition,DQHXNQ38M61 had a strong influence on degrading colonic mucin fucose by decreasedα-fucosidase activity in feces,and improving mucin sulfation by upregulated Gal3ST2 *** genomic analysis revealed that the four *** strains belonged to different branches in the phylogenetic tree,and DYNDL13-4 and DQHXNQ38M61 had more genes involved in carbohydrate metabolism,amino acid metabolism,membrane transport,and signal transduction,which may confer the capacity of nutrient utilization and gastrointestinal adaptation of the strains and be associated with their strong regulation in *** study provides valuable information for understanding the regulation of host metabolism aft

关键词： Streptococcus thermophilus Intestinal microbiota Metabolome Comparative genomics

EMCO-based Optimal Layout Design of Hybrid Wind-wave Energy Converters Array

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Protection and Control of Modern Power Systems 2024年第5期9卷 142-161页

作者： Bo yang Jinhang Duan Yunfeng Yan Bingqiang Liu Jianxiang Huang Lin Jiang Rui Han Faculty of Electric Power Engineering Kunming University of Science and TechnologyKunming 650500China College of Electrical Engineering Zhejiang UniversityHangzhou 310027China Company of Kunming Bureau of CSG EHV Transmission Company Kunming 650217China School of Electrical Engineering and Electronics University of LiverpoolLiverpool L693GJUK Company of Electric Power Science Research Institute State Grid Zhejiang Electric Power Company Ltd.Hangzhou 310014China

Marine renewable energy,combining wave energy converters(WECs)and floating wind turbines(FWTs)into hybrid wave-wind energy converters(HWWECs),garners significant global *** offer potential cost reductions,increased power generation,and enhanced system *** absorption power of high wind energy sites is primarily influenced by the complex hydrodynamic interactions among floating bodies,which are closely related to the location and wind-wave environment of high wind energy *** delve into the positive interactions among HWWECs,this paper proposes a HWWEC array optimization strategy based on the artificial ecosystem opti-mization-manta ray foraging optimization coordinated op-timizer(EMCO).In EMCO,the decomposition operator of artificial ecosystem optimization(AEO)and the flip-ping-dipper foraging operator of manta ray foraging opti-mization coordinated(MRFO)cooperate dynamically to effectively balance local exploitation and global *** validate the effectiveness of EMCO,experiments were conducted in scenarios with 3,5,8,and 20 HWWECs,and compared with five typical *** results demonstrate the existence of multiple optimal solutions for HWWEC *** achieves maximum total absorp-tion power and exhibits good ***,EMCO en-hances the q-factor values of HWWECs across four scales:1.0478,1.0586,1.0612,and 0.9965,*** Terms—Marine renewable energy,hybrid wind-wave energy converter,layout optimization,coordinating optimizer.

关键词： Marine renewable energy hybrid wind-wave energy converter layout optimization coordinating optimizer

Gp78 regulates PMP22 and causes ER stress and autophagy in EV71-VP1-overexpressing mouse Schwann cells

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BIOCELL 2024年第4期48卷 653-664页

作者： DANPING ZHU GUANGMING LIU KUAN FENG SUYUN LI DANDAN HU SIDA yang PEIQING LI Pediatric Emergency Department Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina Department of Child Health Care Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina Pediatric Neurology Department Guangzhou Women and Children’s Medical CenterGuangzhou Medical UniversityGuangdong Provincial Clinical Research Center for Child HealthGuangzhouChina

Background:During Enterovirus type 71(EV71)infection,the structural viral protein 1(VP1)activates endoplasmic reticulum(ER)stress associated with peripheral myelin protein 22(PMP22)accumulation and induces ***,the speciﬁc mechanism behind this process remains ***:In this research,we used the VP1-overexpressing mouse Schwann cells(SCs)models co-transfected with a PMP22 silencing or Autocrine motility factor receptor(AMFR/gp78)overexpressing vector to explore the regulation of gp78 on PMP22 and its relationship with autophagy and ***:The activity of gp78 could be inﬂuenced by EV71-VP1,leading to a decrease in the ubiquitination and degradation of PMP22,resulting in PMP22 accumulation in *** VP1-overexpressing mouse SCs,all three ER stress sensors,including pancreatic endoplasmic reticulum kinase(PERK),activating transcription factor 6(ATF6)and inositol-requiring enzyme 1(IRE1)and the related downstream signals(C/EBP-homologous protein(CHOP)and Caspase 12)were activated,as well as the ER-resident chaperone Glucose-regulated protein 78(GRP78).In addition,VP1 upregulated the autophagy marker Microtubule-associated protein 1 light chain 3 beta(LC3B),while PMP22 silencing or gp78 overexpression reversed the ***,PMP22 silencing or gp78 overexpression increased proliferation of EV71-VP1-transfected mouse ***:Gp78 could regulate PMP22 accumulation through ubiquitination degradation and cause ER stress and autophagy in EV71-VP1-overexpressing mouse ***,the gp78/PMP22/ER stress axis might emerge as a promising therapeutic target for myelin and neuronal damage induced by EV71 infection.

关键词： Enterovirus type 71 AMFR/gp78 PMP22 Autophagy Schwann cells

Generating a nanoscale blade-like optical field in a coupled nanofiber pair

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Photonics Research 2024年第1期12卷 154-162页

作者： YUXIN yang JIAXIN GAO HAO WU ZHANKE ZHOU LIU yang XIN GUO PAN WANG LIMIN TONG Interdisciplinary Center for Quantum Information New Cornerstone Science LaboratoryState Key Laboratory of Extreme Photonics and InstrumentationCollege of Optical Science and EngineeringZhejiang UniversityHangzhou 310027China Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing 314000China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China

An optical field with sub-nm confinement is essential for exploring atomic-or molecular-level light-matter *** such fields demonstrated so far have typically point-like cross-sections,an optical field having a higher-dimensional cross-section may offer higher flexibility and/or efficiency in ***,we propose generating a nanoscale blade-like optical field in a coupled nanofiber pair(CNP)with a 1-nm-width central *** on a strong mode coupling-enabled slit waveguide mode,a sub-nm-thickness blade-like optical field can be generated with a cross-section down to~0.28 nm×38 nm at 1550 nm wavelength(i.e.,a thickness of~λ_(0)∕5000)and a peak-to-background intensity ratio(PBR)higher than 20 d *** slit waveguide mode of the CNP can be launched from one of the two nanofibers that are connected to a standard optical fiber via an adiabatical fiber taper,in which a fundamental waveguide mode of the fiber can be converted into a high-purity slit mode with high efficiency(>98%)within a CNP length of less than 10μm at 1550 nm *** wavelengthdependent behaviors and group velocity dispersion in mode converting processes are also investigated,showing that such a CNP-based design is also suitable for broadband and ultrafast pulsed *** results may open up new opportunities for studying light-matter interaction down to the sub-nm scale,as well as for exploring ultra-high-resolution optical technology ranging from super-resolution nanoscopy to chemical bond manipulation.

关键词： fiber waveguide optical

基于UG和MasterCAM的汤匙模具分型与数控编程

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装备制造技术 2016年第12期 236-238页

作者：陈太丽杨开怀邹泽昌福建船政交通职业学院机械工程系福建福州350007

利用UG软件对汤匙进行零件造型及模具分型设计,将模型文件转换到Master CAM软件,实现了对汤匙模具进行数控自动编程与仿真加工。结果表明,将UG和Master CAM结合使用,发挥各自优势功能,可以提高汤匙模具设计及其数控加工的质量和效率。

关键词： UG Master CAM 汤匙模具设计数控编程

Co/N co-doped flower-like carbon-based phase change materials toward solar energy harvesting

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Aggregate 2024年第1期5卷 321-330页

作者： Xiao Chen Lei Wang Yan Gao yang Li Xiaowei Zhang Yu Jiang Ge Wang Institute of Advanced Materials Beijing Normal UniversityBeijingChina Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Key Laboratory of Function Materials for Molecule and Structure ConstructionSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijingChina

The photothermal conversion capacity of pristine organic phase change materials(PCMs)is inherently insufficient in solar energy *** upgrade their photothermal conversion capacity,we developed bimetallic zeolitic imidazolate framework(ZIF)derived Co/N co-doped flower-like carbon(Co/N-FLC)-based composite PCMs toward solar energy harvesting.3D interconnected carbon framework with low interfacial thermal resistance,abundant carbon defects and high content of nitrogen doping,excellent localized surface plasmon resonance(LSPR)effect of Co nanoparticles,and light absorber Co_(3)ZnC in Co/N-FLC synergistically upgrade the photothermal capacity of(polyethylene glycol)PEG@Co/N-FLC composite PCMs with an ultrahigh photothermal conversion efficiency of 94.8%under 0.16 W/cm^(2).Uniformly anchored Co and Co_(3)ZnC nanoparticles in carbon framework guarantee excellent photon capture *** carbon nanotubes(CNTs)in 2D carbon nanosheets further accelerate the rapid transport of phonons by constructing cross-connected heat transfer ***,PEG@Co/N-FLC exhibits a thermal energy storage density of 100.69 J/g and excellent thermal stability and durable ***,PEG@Co/N-FLC composite PCMs are promising candidates to accelerate the efficient utilization of solar energy.

关键词： bimetallic ZIF Co/N co-doped carbon phase change materials photothermal conversion thermal energy storage

血浆内脏脂肪素与非酒精性脂肪性肝病患者胰岛素抵抗的关系

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医学信息 2021年第9期34卷 128-130页

作者：蔡怀阳李运泽邹劲涛涂强柳州市人民医院消化内科柳州市人民医院核医学科柳州市人民医院体检部

目的探讨血浆内脏脂肪素与非酒精性脂肪性肝病(NAFLD)患者胰岛素抵抗的关系。方法选取2013年7月～2014年12月于柳州市人民医院非酒精性脂肪性肝病患者110例,根据严重程度分为轻度NAFLD组(40例)、中度NAFLD组(40例)和重度NAFLD组(30例),... 详细信息

目的探讨血浆内脏脂肪素与非酒精性脂肪性肝病(NAFLD)患者胰岛素抵抗的关系。方法选取2013年7月～2014年12月于柳州市人民医院非酒精性脂肪性肝病患者110例,根据严重程度分为轻度NAFLD组(40例)、中度NAFLD组(40例)和重度NAFLD组(30例),另外选取同期体检正常者作为对照组(60例)。比较各组身高、体质量、臀围、腰围、甘油三脂、总胆固醇、血糖、肝功能、胰岛素水平、血浆内脏脂肪素水平及胰岛素抵抗(HOMA-IR)情况。结果各组体质量、体质量指数、腰臀比、内脏脂肪素及HOMA-IR比较,差异有统计学意义(P<0.05);轻度NAFLD组、中度NAFLD组、重度NAFLD组内脏脂肪素依次升高,差异有统计学意义(P<0.05);轻度NAFLD组、中度NAFLD组、重度NAFLD组HOMA-IR比较,差异有统计学意义(P<0.05);相关性分析显示,血浆内脏脂肪素水平与HOMA-IR呈正相关;轻度NAFLD组、中度NAFLD组、重度NAFLD组中,内脏脂肪素与HOMA-IR的相关性依次增强(r=0.253、0.508、0.650)。结论非酒精性脂肪性肝病患者血浆内脏脂肪素水平及HOMA-IR高于健康人群,其与胰岛素抵抗存在一定的关系。

关键词：非酒精性脂肪性肝病内脏脂肪素胰岛素抵抗

Physiological Mechanism of Exogenous Selenium in Alleviating Mercury Stress on Pakchoi(Brassica campestris L.)

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Phyton-International Journal of Experimental Botany 2024年第5期93卷 951-962页

作者： Chengxu Qian Qiangwen Chen Leiyu Jiang Xiaoyan yang Shen Rao Weiwei Zhang Feng Xu College of Horticulture and Gardening Yangtze UniversityJingzhou434025China Enshi Se-Run Material Engineering Technology Co. Ltd.Enshi445000China Henry Fok School of Biology and Agricultural Shaoguan UniversityShaoguan512005China National R&D for Se-Rich Agricultural Products Processing Technology Wuhan Polytechnic UniversityWuhan430023China

The objective of this study was to explain the physiological mechanisms through which Na_(2)SeO_(3) mitigates the growth and developmental inhibition of pakchoi under HgCl_(2)*** results showed that treatment with HgCl_(2)(40 mg L^(−1))led to reduced biomass,dwarfing,root shortening,and root tip necrosis in *** to control(CK),the activities of superoxide dismutase(SOD)and peroxidase(POD)in Hg treatment increased,and the content of malondialdehyde(MDA)also dramatically increased,which negatively impacted the growth of *** concentrations of Na_(2)SeO_(3)(0.2 mg L^(−1))significantly increased the content of soluble sugars compared with control,while chlorophyll,soluble proteins,free amino acids,and vitamin C had no significant *** results of the mixed treatments with HgCl_(2)and Na_(2)SeO_(3) suggested that selenium may be able to reduce the toxicity of mercury in *** biomass,plant height,root length,chlorophyll content,soluble protein,other physiological indicators,and proline showed significant increases compared with the HgCl_(2)***,the MDA content and mercury accumulation in pakchoi *** results revealed the antagonistic effects of selenium and mercury in ***,a theoretical basis for studying pakchoi’s mercuryexcreted and selenium-rich cultivation technology was provided.

关键词： Selenium mercury stress pakchoi physiological properties antioxidant enzymes