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Systematic Cloud-Based Optimization: Twin-Fold Moth Flame Algorithm for VM Deployment and Load-Balancing

Intelligent Automation & Soft Computing 2024年第3期39卷 477-510页

作者： Umer Nauman Yuhong Zhang Zhihui Li Tong Zhen Information Science and engineering college Henan University of TechnologyZhengzhou450001China School of Artificial Intelligence and Big Data Henan University of TechnologyZhengzhou450001China Key Laboratory of Grain Information Processing and Control Ministry of EducationHenan University of TechnologyZhengzhou450001China

Cloud computing has gained significant recognition due to its ability to provide a broad range of online services and ***,existing commercial cloud computing models demonstrate an appropriate design by concentrating computational assets,such as preservation and server infrastructure,in a limited number of large-scale worldwide data *** the deployment of virtual machines(VMs)is crucial in this scenario to ensure system dependability,performance,and minimal latency.A significant barrier in the present scenario is the load distribution,particularly when striving for improved energy consumption in a hypothetical grid computing *** design employs load-balancing techniques to allocate different user workloads across several virtual *** address this challenge,we propose using the twin-fold moth flame technique,which serves as a very effective optimization *** intentionally designed the twin-fold moth flame method to consider various restrictions,including energy efficiency,lifespan analysis,and resource *** provides a thorough approach to evaluating total costs in the cloud computing *** assessing the efficacy of our suggested strategy,the study will analyze significant metrics such as energy efficiency,lifespan analysis,and resource *** investigation aims to enhance cloud computing techniques by developing a new optimization algorithm that considers multiple factors for effective virtual machine placement and load *** proposed work demonstrates notable improvements of 12.15%,10.68%,8.70%,13.29%,18.46%,and 33.39%for 40 count data of nodes using the artificial bee colony-bat algorithm,ant colony optimization,crow search algorithm,krill herd,whale optimization genetic algorithm,and improved Lévy-based whale optimization algorithm,respectively.

关键词： Optimizing cloud computing deployment of virtual machines load-balancing twin-fold moth flame algorithm grid computing computational resource distribution data virtualization

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通过高通量研究识别用于本征陡坡晶体管的原子级薄孤立能带沟道材料

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Science Bulletin 2024年第10期69卷 1427-1436页

作者：屈恒泽张胜利曹江吴振华柴扬李卫胜李连忠任文才王欣然曾海波 MIIT Key Laboratory of Advanced Display Materials and Devices College of Material Science and EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Electronic and Optical engineering Nanjing University of Science and TechnologyNanjing 210094China Key Laboratory of Microelectronics Device and Integrated Technology Institute of Microelectronics of Chinese Academy of SciencesBeijing 100029China Department of Applied Physics The Hong Kong Polytechnic UniversityHong Kong 999077China National Laboratory of Solid State Microstructures School of Electronic Science and Engineering and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210023China Department of Mechanical engineering The University of Hong KongHong Kong 999077China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Integrated Circuits Nanjing UniversitySuzhou 215163China Suzhou Laboratory Suzhou 215009China

Developing low-power FETs holds significant importance in advancing logic circuits,especially as the feature size of MOSFETs approaches sub-10 ***,this has been restricted by the thermionic limitation of SS,which is limited to 60 mV per decade at room ***,we proposed a strategy that utilizes 2D semiconductors with an isolated-band feature as channels to realize subthermionic SS in *** high-throughput calculations,we established a guiding principle that combines the atomic structure and orbital interaction to identify their sub-thermionic transport *** guides us to screen 192 candidates from the 2D material database comprising 1608 ***,the physical relationship between the sub-thermionic transport performances and electronic structures is further revealed,which enables us to predict 15 systems with promising device performances for low-power applications with supply voltage below 0.5 *** work opens a new way for the low-power electronics based on 2D materials and would inspire extensive interests in the experimental exploration of intrinsic steep-slope MOSFETs.

关键词： 2D materials Electronic band structures Transport properties Steep-slope transistors DFT-NEGF calculations

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Transcriptomics and physiological analyses reveal that sulfur alleviates mercury toxicity in rice(Oryza sativa L.)

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Journal of Environmental Sciences 2024年第1期135卷 10-25页

作者： Yingmei Huang Jicai Yi Xiaomin Li Fangbai Li National-Regional Joint engineering Research Center for Soil Pollution Control and Remediation in South China Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and ManagementInstitute of Eco-Environmental and Soil SciencesGuangdong Academy of SciencesGuangzhou 510650China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China college of Life Sciences South China Agricultural UniversityGuangzhou 510642China SCNU Environmental Research Institute Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety&MOE Key Laboratory of Theoretical Chemistry of EnvironmentSouth China Normal UniversityGuangzhou 510006China

Mercury(Hg)is one of the most dangerous contaminants and has sparked global concern since it poses a health risk to humans when consumed through ***(S)is a crucial component for plant growth,and S may reduce Hg accumulation in rice ***,the detailed effects of S and the mechanisms underlying S-mediated responses in Hg-stressed rice plants remain ***,to investigate the effects of S addition on rice growth,Hg accumulation,physiological indexes,and gene expression profiles,rice seedlings were hydroponically treated with Hg(20μmol/L Hg Cl_(2))and Hg plus elemental sulfur(100 mg/L).S application significantly reduced Hg accumulation in Hg-stressed rice roots and alleviated the inhibitory effects of Hg on rice growth.S addition significantly reduced Hg-induced reactive oxygen species generation,membrane lipid peroxidation levels,and activities of antioxidant enzymes while increasing glutathione content in *** analysis of roots identified 3,411,2,730,and 581 differentially expressed genes in the control(CK)***,CK ***+S,and Hg ***+S datasets,*** pathway of S-mediated biological metabolism fell into six groups:biosynthesis and metabolism,expression regulation,transport,stimulus response,oxidation reduction,and cell wall *** majority of biological process-related genes were upregulated under Hg stress compared with CK treatment,but downregulated in the Hg+S *** results provide transcriptomic and physiological evidence that S may be critical for plant Hg stress resistance and will help to develop strategies for reduction or phytoremediation of Hg contamination.

关键词： Sulfur Mercury Transcriptomics Detoxification

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Pressure-Tunable Large Anomalous Hall Effect in Ferromagnetic Metal LiMn_(6)Sn_(6)

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Chinese Physics Letters 2024年第5期41卷 69-76页

作者：高玲玲赖俊文陈栋裴翠颖王琦赵毅李昌华曹渭征吴珏霏陈宇林陈星秋孙岩 Claudia Felser 齐彦鹏 School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Max Planck Institute for Chemical Physics of Solids Dresden 01187Germany college of Physics Qingdao UniversityQingdao 266071China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Department of Physics Clarendon LaboratoryUniversity of OxfordParks RoadOxford OX13PUUK School of Materials Science and engineering University of Science and Technology of ChinaShenyang 110016China Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China

Recently, giant intrinsic anomalous Hall effect(AHE) has been observed in the materials with kagome ***, we systematically investigate the influence of high pressure on the AHE in the ferromagnet LiMn_(6)Sn_(6) with clean Mn kagome lattice. Our in situ high-pressure Raman spectroscopy indicates that the crystal structure of LiMn_(6)Sn_(6) maintains a hexagonal phase under high pressures up to 8.51 GPa. The anomalous Hall conductivity(AHC) σ_(xy)^(A) remains around 150 Ω^(-1)·cm^(-1), dominated by the intrinsic mechanism. Combined with theoretical calculations, our results indicate that the stable AHE under pressure in Li Mn_(6)Sn_(6) originates from the robust electronic and magnetic structure.

关键词： structure mechanism intrinsic

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Molecular engineering binuclear copper catalysts for selective CO_(2) reduction to C_(2) products

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Journal of Energy Chemistry 2024年第6期93卷 166-173,I0005页

作者： Qi Zhao Kai Lei Bao Yu Xia Rachel Crespo-Otero Devis Di Tommaso Department of Chemistry School of Physical and Chemical SciencesQueen Mary University of LondonLondonE14NSUK Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureState Key Laboratory of Materials Processing and Die&Mould TechnologySchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina Department of Chemistry University College LondonLondonWC1H 0AJUK Digital Environment Research Institute Queen Mary University of LondonEmpire HouseLondon E11HHUK

Molecular copper catalysts serve as exemplary models for correlating the structure-reaction-mechanism relationship in the electrochemical CO_(2) reduction(eCO_(2)R),owing to their adaptable environments surrounding the copper metal *** investigation,employing density functional theory calculations,focuses on a novel family of binuclear Cu molecular *** modulation of their coordination configuration through the introduction of organic groups aims to assess their efficacy in converting CO_(2) to C_(2)*** findings highlight the crucial role of chemical valence state in shaping the characteristics of binuclear Cu catalysts,consequently influencing the eCO_(2)R behaviour,Notably,the Cu(Ⅱ)Cu(Ⅱ)macrocycle catalyst exhibits enhanced suppression of the hydrogen evolution reaction(HER),facilitating proton trans fer and the eCO_(2)R *** rthermore,we explo re the impact of diverse electro n-withdrawing and electron-donating groups coordinated to the macrocycle(R=-F,-H,and-OCH_3)on the electron distribution in the molecular *** placement of-OCH_3 groups in the macrocycles leads to a favourable oxidation state of the Cu centres and subsequent C-C coupling to form C_(2) *** research provides fundamental insights into the design and optimization of binuclear Cu molecular catalysts for the electrochemical conversion of CO_(2) to value-added C_(2) products.

关键词： Molecular catalyst design Selective CO_(2)reduction C_(2)products Density functional theory calculations

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Intelligent Orchestrating of IoT Microservices Based on Reinforcement Learning

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Chinese Journal of Electronics 2022年第5期31卷 930-937页

作者： WU Yuqin SHEN Congqi CHEN Shuhan WU Chunming LI Shunbin WEI Ruan college of Computer Science and Technology Zhejiang University college of Information and Electrical engineering Ningde Normal University Zhejiang Lab college of Control Science and engineering Zhejiang University

With the recent increase in the number of Internet of things(IoT) services, an intelligent scheduling strategy is needed to manage these services. In this paper, the problem of automatic choreography of microservices in IoT is explored. A type of reinforcement learning(RL) algorithm called TD3 is used to generate the optimal choreography policy under the framework of a softwaredefined network. The optimal policy is gradually reached during the learning procedure to achieve the goal, despite the dynamic characteristics of the network environment. The simulation results show that compared with other methods, the TD3 algorithm converges faster after a certain number of iterations, and it performs better than other non-RL algorithms by obtaining the highest reward. The TD3 algorithm can effciently adjust the traffic transmission path and provide qualified IoT services.

关键词： Internet of things Microservice Traffc scheduling Reinforcement learning

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我国自主开发的抗菌新药临床管线最新进展（英文）

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engineering 2024年第7期 52-68页

作者：杨信怡李聪然王秀坤郑忠辉孙培译许春杰陈鲁妮蒋建东 Staffan Normark Birgitta Henriques-Normark 游雪甫 Beijing Key Laboratory of Antimicrobial Agents/Laboratory of Pharmacology Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Division for Medicinal Microorganism-Related Strains CAMS Collection Center of Pathogenic Microorganisms Chinese Academy of Medical Sciences & Peking Union Medical College State Key Laboratory of Bioactive Substances and Functions of Natural Medicines Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Shandong Xinhua Pharmaceutical Co. Ltd. Department of Microbiology Tumor and Cell Biology Karolinska Institutet State Key Laboratory of Bioactive Substances and Function of Natural Medicines Institute of Materia Medica Chinese Academy of Medical Sciences & Peking Union Medical College Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences & Peking Union Medical College Clinical Microbiology Karolinska University Hospital

Antibacterial resistance is a global health threat that requires further concrete action on the part of all *** this context,one of the biggest concerns is whether enough new antibacterial drugs are being discovered and *** several high-quality reviews on clinical antibacterial drug pipelines from a global perspective were published recently,none provides comprehensive information on original antibacterial drugs at clinical stages in *** this review,we summarize the latest progress of novel antibacterial drugs approved for marketing and under clinical evaluation in China since *** was obtained by consulting official websites,searching commercial databases,retrieving literature,asking personnel from institutions or companies,and other means,and a considerable part of the data covered here has not been included in other *** of June 30,2023,a total of 20 antibacterial projects from 17 Chinese pharmaceutical companies or developers were identified and *** them,two new antibacterial drugs that belong to traditional antibiotic classes were approved by the National Medical Products Administration (NMPA) in China in 2019 and 2021,respectively,and 18antibacterial agents are in clinical development,with one under regulatory evaluation,five in phase-3,six in phase-2,and six in *** of the clinical candidates are new analogs or monocomponents of traditional antibacterial pharmacophore types,including two dual-acting hybrid antibiotics and a recombinant antibacterial ***,despite there being 17 antibacterial clinical candidates,our analysis indicates that there are still relatively few clinically differentiated antibacterial agents in stages of clinical development in ***,Chinese pharmaceutical companies and institutions will develop more innovative and clinically differentiated candidates with good market potential in the future research and development (R&D) of original antibacterial drug

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An Equivalent Substitute Strategy for Constructing 3D Ordered Porous Carbon Foams and Their Electromagnetic Attenuation Mechanism

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Nano-Micro Letters 2022年第10期14卷 15-35页

作者： Meng Zhang Hailong Ling Ting Wang Yingjing Jiang Guanying Song Wen Zhao Laibin Zhao Tingting Cheng Yuxin Xie Yuying Guo Wenxin Zhao Liying Yuan Alan Meng Zhenjiang Li college of Materials Science and engineering College of Electromechanical EngineeringQingdao University of Science and TechnologyQingdao 266061People’s Republic of China State Key Laboratory Base of Eco-Chemical engineering College of Chemistry and Molecular EngineeringCollege of Chemical Engineering in Gaomi CampusQingdao University of Science and TechnologyQingdao 266042People’s Republic of China

Three-dimensional(3D)ordered porous carbon is generally believed to be a promising electromagnetic wave(EMW)absorbing ***,most research works targeted performance improvement of 3D ordered porous carbon,and the specific attenuation mechanism is still ***,in this work,a novel ultra-light egg-derived porous carbon foam(EDCF)structure has been successfully constructed by a simple carbonization combined with the silica microsphere template-etching *** on an equivalent substitute strategy,the influence of pore volume and specific surface area on the electromagnetic parameters and EMW absorption properties of the EDCF products was confirmed respectively by adjusting the addition content and diameter of silica *** a primary attenuation mode,the dielectric loss originates from the comprehensive effect of conduction loss and polarization loss in S-band and C band,and the value is dominated by polarization loss in X band and Ku band,which is obviously greater than that of conduction ***,in all samples,the largest effective absorption bandwidth of EDCF-3 is 7.12 GHz under the thickness of 2.13 mm with the filling content of approximately 5 wt%,covering the whole Ku ***,the EDCF-7 sample with optimized pore volume and specific surface area achieves minimum reflection loss(RL_(min))of−58.08 dB at 16.86 GHz while the thickness is 1.27 *** outstanding research results not only provide a novel insight into enhancement of EMW absorption properties but also clarify the dominant dissipation mechanism for the porous carbon-based absorber from the perspective of objective experiments.

关键词： Porous carbon foam Electromagnetic wave absorption Adjustable pore structure Polarization loss Attenuation mechanism

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Multi-objective global optimization approach predicted quasi-layered ternary TiOS crystals with promising photocatalytic properties

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Chinese Physics B 2024年第8期33卷 429-435页

作者：向依婕高思妍王春雷方海平段香梅郑益峰张越宇 Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China School of Materials Science and engineering East China University of Science and TechnologyShanghai 200237China college of Science Shanghai UniversityShanghai 200444China School of Physics East China University of Science and TechnologyShanghai 200237China School of Physical Science and Technology Ningbo UniversityNingbo 315211China Wenzhou Institute University of Chinese Academy of Sciences(UCAS)Wenzhou 325001China

Titanium dioxide(TiO_(2))has attracted considerable research attentions for its promising applications in solar cells and photocatalytic ***,the intrinsic challenge lies in the relatively low energy conversion efficiency of TiO_(2),primarily attributed to the substantial band gaps(exceeding 3.0 eV)associated with its rutile and anatase *** multi-objective global optimization,we have identified two quasi-layered ternary Ti-O-S crystals,composed of titanium,oxygen,and *** calculations of formation energy,phonon dispersions,and thermal stability confirm the chemical,dynamical and thermal stability of these newly discovered *** the state-of-art hybrid density functional approach and many-body perturbation theory(quasiparticle GW approach and Bethe-Salpeter equation),we calculate the optical properties of both the TiOS ***,both phases show favorable photocatalytic characteristics,featuring band gaps suitable for visible optical absorption and appropriate band alignments with water for effective charge carrier ***,ternary compound TiOS holds the potential for achieving high-efficiency photochemical conversion,showing our multi-objective global optimization provides a new approach for novel environmental and energy materials design with multicomponent compounds.

关键词： photocatalysis first principles calculations multi-objective global optimization

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Encapsulated Fe(IV)Molecular Complex for Photoacoustic Imaging

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CCS Chemistry 2024年第5期6卷 1184-1197页

作者： Ye Xu Chao Li Zhong-Yu Yu Jiamin Wang Zhaoyang Liu Chao Jiang Zhen-Feng Chen Xiaoyu Wu Ming-Xing Li Hong Yang Zhao-Xi Wang Jonathan L.Sessler Department of Chemistry Center for Supramolecular Chemistry and CatalysisInnovative Drug Research CenterShanghai UniversityShanghai 200444 college of Chemistry and Materials Science Shanghai Key Laboratory of Rare Earth Functional MaterialsShanghai Frontiers Science Center of Biomimetic CatalysisShanghai Normal UniversityShanghai 200234 Sijing Community Health Service Center of Songjiang District Shanghai 201601 Key Laboratory for Chemistry and Molecular engineering of Medicinal Resources Guangxi Normal UniversityGuilin 541004 Department of Chemistry The University of Texas at AustinAustinTexas 78712-1224

stable neutral Fe(IV)complex(Fe-HDCL),readily accessible on the g scale,was found to possess high water solubility and good stability(<5%degradation over 4 h upon photoirradiation).Fe-HDCL is green and absorbs light effectively in the visible region(500–800 nm)with aλmax at 650 nm(ɛ=7830 M^(−1)cm^(−1)).Fe-HDCL also exhibits photothermal(PT)behavior comparable to single-wall carbon nanotubes in the solid *** aqueous solution,high PT conversion(η=72.6%)is achieved,and a strong hyperthermia-based inhibition of cell growth is observed upon subjecting Fe-HDCL to near-infrared 730 nm laser *** biological studies in vitro and in vivo confirmed that Fe-HDCL is biocompatible,clears readily,and allows the visual detection of blood *** subjecting mice to intravenous injection at low doses(e.g.,50μmol·kg^(−1)),Fe-HDCL also permits the photoacoustic(PA)imaging of kidneys and the evaluation of renal fibrosis in mouse *** addition,Fe-HDCL allows PA-based imaging of brain tissues,presumably reflecting its ability to pass through the blood-brain *** thus propose that Fe-HDCL has a role to play as PT agent and as a photodiagnostic.

关键词： stable Fe(IV)complex blood-brain barrier molecular cage photoacoustic imaging renal fibrosis

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