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Big Data Access Control Mechanism Based on Two-Layer Permission Decision structure

Computers, Materials & Continua 2024年第4期79卷 1705-1726页

作者： Aodi Liu na Wang Xuehui Du Dibin shan Xiangyu Wu Wenjuan Wang He’nan Province Key Laboratory of Information security Information Engineering UniversityZhengzhou450000China

Big data resources are characterized by large scale, wide sources, and strong dynamics. Existing access controlmechanisms based on manual policy formulation by security experts suffer from drawbacks such as low policymanagement efficiency and difficulty in accurately describing the access control policy. To overcome theseproblems, this paper proposes a big data access control mechanism based on a two-layer permission decisionstructure. This mechanism extends the attribute-based access control (ABAC) model. Business attributes areintroduced in the ABAC model as business constraints between entities. The proposed mechanism implementsa two-layer permission decision structure composed of the inherent attributes of access control entities and thebusiness attributes, which constitute the general permission decision algorithm based on logical calculation andthe business permission decision algorithm based on a bi-directional long short-term memory (BiLsTM) neuralnetwork, respectively. The general permission decision algorithm is used to implement accurate policy decisions,while the business permission decision algorithm implements fuzzy decisions based on the business *** BiLsTM neural network is used to calculate the similarity of the business attributes to realize intelligent,adaptive, and efficient access control permission decisions. Through the two-layer permission decision structure,the complex and diverse big data access control management requirements can be satisfied by considering thesecurity and availability of resources. Experimental results show that the proposed mechanism is effective andreliable. In summary, it can efficiently support the secure sharing of big data resources.

关键词： Big data access control data security BiLsTM

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Application of GNss-PPP on Dynamic Deformation Monitoring of Offshore Platforms

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China Ocean Engineering 2024年第2期38卷 352-361页

作者： YU Li-na XIONG Kuan GAO Xi-feng LI Zhi FAN Li-long ZHANG Kai Institute of Ocean Energy and Intelligent Construction Tianjin University of TechnologyTianjin 300384China China Railway Construction Bridge Engineering Bureau Group Co.LTD Tianjin 300300China school of Civil Engineering Tianjin UniversityTianjin 300072China Department of Land surveying and Geo-Informatics The Hong Kong Polytechnic UniversityHong KongChina state Key Laboratory of Precision Blasting Jianghan UniversityWuhan 430056China

The real-time dynamic deformation monitoring of offshore platforms under environmental excitation is crucial to their safe *** Global navigation satellite system-Precise Point Positioning(GNss-PPP)has been considered for this purpose,its monitoring accuracy is relatively ***,the influence of background noise on the dynamic monitoring accuracy of GNss-PPP remains ***,it is imperative to further validate the feasibility of GNss-PPP for deformation monitoring of offshore *** address these concerns,vibration table tests with different amplitudes and frequencies are *** results demonstrate that GNss-PPP can effectively monitor horizontal vibration displacement as low as±30 mm,which is consistent with ***,the spectral characteristic of background noise in GNss-PPP is similar to that of GNss-RTK(Real Time Kinematic).Building on this observation,an improved Complete Ensemble Empirical Mode Decomposition with Adaptive Noise(CEEMDAN)has been proposed to de-noise the data and enhance the dynamic monitoring accuracy of *** monitoring application research is also undertaken,successfully extracting and analyzing the dynamic deformation of an offshore platform structure under environmental excitation using GNss-PPP monitoring in conjunction with improved CEEMDAN *** comparing the de-noised dynamic deformation trajectories of the offshore platform during different periods,it is observed that the platform exhibits reversible alternating vibration responses under environmental excitation,with more pronounced displacement deformation in the direction of load *** research results confirm the feasibility and potential of GNss-PPP for dynamic deformation monitoring of offshore platforms.

关键词： GNss-PPP offshore platform dynamic deformation monitoring improved CEEMDAN de-noising

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Halotolerant Bacillus *** RA coordinates myo-inositol metabolism to confer salt tolerance to tomato

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journal of Integrative Plant Biology 2024年第9期66卷 1871-1885页

作者： Fenghui Wu Zengting Chen Xiaotong Xu Xin Xue Yanling Zhang na sui shandong Provincial Key Laboratory of Plant stress College of Life SciencesShandong Normal UniversityJinan 250014China Dongying Key Laboratory of salt Tolerance Mechanism and Application of Halophytes Dongying InstituteShandong Normal UniversityNo.2 Kangyang RoadDongying 257000China

soil salinity is a worldwide problem threatening crop *** plant growth-promoting rhizobacteria(PGPR)could survive in high salt environment and assist plant adaptation to ***,the genomic and metabolic features,as well as the regulatory mechanisms promoting salt tolerance in plants by these bacteria remain largely *** the current work,a novel halotolerant PGPR strain,namely,Bacillus *** RA can enhance tomato tolerance to salt *** genomic analysis of strain RA with its closely related species indicated a high level of evolutionary plasticity exhibited by strain-specific genes and evolutionary constraints driven by purifying selection,which facilitated its genomic adaptation to salt-affected *** transcriptome further showed that strain RA could tolerate salt stress by balancing energy metabolism via the reprogramming of biosynthetic *** exude a plethora of metabolites that can strongly influence plant *** accumulation of myo-inositol in leaves under salt stress was observed,leading to the promotion of plant growth triggered by Bacillus *** ***,myo-inositol serves as a selective force in the assembly of the phyllosphere microbiome and the recruitment of plant-beneficial *** promotes destabilizing properties in phyllosphere bacterial co-occurrence networks,but not in fungal ***,interdomain interactions between bacteria and fungi were strengthened by myo-inositol in response to salt *** work highlights the genetic adaptation of RA to salt-affected soils and its ability to impact phyllosphere microorganisms through the adjustment of myo-inositol metabolites,thereby imparting enduring resistance against salt stress in tomato.

关键词： myo‐inositol PGPR phyllosphere microorganisms salt stress tomato

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Rational Design of Ruddlesden-Popper Perovskite Ferrites as Air Electrode for Highly Active and Durable Reversible Protonic Ceramic Cells

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nano-Micro Letters 2024年第9期16卷 308-324页

作者： na Yu Idris Temitope Bello Xi Chen Tong Liu Zheng Li Yufei song Meng Ni Department of Building and Real Estate Research Institute for Sustainable Urban Development(RISUD)and Research Institute for Smart Energy(RISE)The Hong Kong Polytechnic UniversityHung HomKowloonHong KongPeople’s Republic of China The Hong Kong Polytechnic University shenzhen Research Institute Shenzhen 518057GuangdongPeople’s Republic of China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyClear Water BayHong KongPeople’s Republic of China

Reversible protonic ceramic cells(RePCCs)hold promise for efficient energy storage,but their practicality is hindered by a lack of high-performance air electrode ***-Popper perovskite sr_(3)Fe_(2)O_(7−δ)(sF)exhibits superior proton uptake and rapid ionic conduction,boosting ***,excessive proton uptake during RePCC operation degrades sF’s crystal structure,impacting *** study introduces a novel A/B-sites co-substitution strategy for modifying air electrodes,incorporating sr-deficiency and Nb-substitution to create sr_(2.8)Fe_(1.8)Nb_(0.2)O_(7−δ)(D-sFN).Nb stabilizes sF’s crystal,curbing excessive phase formation,and sr-deficiency boosts oxygen vacancy concentration,optimizing oxygen *** D-sFN electrode demonstrates outstanding activity and durability,achieving a peak power density of 596 mW cm^(−2)in fuel cell mode and a current density of−1.19 A cm^(−2)in electrolysis mode at 1.3 V,650℃,with excellent cycling *** approach holds the potential for advancing robust and efficient air electrodes in RePCCs for renewable energy storage.

关键词： Reversible protonic ceramic cells Air electrode Ruddlesden-Popper perovskite Hydration Oxygen reduction reaction

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Using Longitudinal Fins to Improve the Melting Performance of stearic Acid in Thermal Energy storage Devices

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journal of Thermal science 2024年第5期33卷 1672-1687页

作者： YAN suying LIU Yiran AO Ci ZHAO Xiaoyan ZHANG na ZHANG Ruiying AHMADI Mohammad Hossein school of Energy and Power Engineering Inner Mongolia University of TechnologyHohhot 010051China Institute of Engineering Thermophysics Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of sciences Beijing 100190China school of Materials science and Engineering Inner Mongolia University of TechnologyHohhot 010051China Faculty of Mechanical Engineering Shahrood University of TechnologyShahroodIran

The heat transfer efficiency of a thermal energy storage unit(TEsU)can be improved by the addition of novel longitudinal fins.A series of TEsUs are analyzed using the finite volume method(FVM)to determine the effect of fin angle on the heat transfer *** the fin angle increases,the TEs rate first increases,then decreases,reaching a maximum rate at 60°,where the melting time is less by 30.9%,28.58%,21.99%,9.02%,and 18.1%than at 0°,15°,30°,45°,and 80°,*** addition,it is found that the melting time of the phase change material is significantly greater at the bottom of the *** time percentage of this stage decreases as the fin angle increases through these percentages by 7%,14%,23%,33%,and 20%,***,the response surface methodology(RsM)is applied to optimize the longitudinal fin by minimizing the total melting *** analysis concludes that a fin angle of 58.68°reduces the complete melting time of the stearic acid by 44%below the time at 0°.These findings fill a gap in knowledge of the effect on melting performance of the design angle of longitudinal fins and provide a reference for the design of horizontally placed longitudinal finned thermal energy storage units.

关键词： thermal energy storage melting rate enhancement longitudinal fins fin angle phase change materials

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Neural and Behavioral Measures of stress-induced Impairment in Error Awareness and Post-error Adjustment

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Neuroscience Bulletin 2024年第7期40卷 937-951页

作者： na Hu Quanshan Long Xiaoxi Wang Quan Li Qing Li Antao Chen school of Preschool and special Education Kunming UniversityKunming 650214China Faculty of Education Yunnan Normal UniversityKunming 650214China College of Teacher Education Qujing Normal UniversityQujing 655099China Key Laboratory of Cognition and Personality of Ministry of Education Faculty of PsychologySouthwest UniversityChongqing 400715China school of Psychology Shanghai University of SportShanghai 200438China

Exposure to stress negatively affects error processing,but the impact of stress on error awareness remains to be *** the present study,we examined the temporal dynamics of error awareness and post-error adjustment following acute ***-nine healthy men were randomly assigned to the control(n=26)or stress group(n=23).After stress induction,participants completed the error awareness task,and their brain activity was assessed by *** to the control group,the stress group demonstrated lower error awareness accuracy and smaller Pe(error positivity)and ΔPe amplitudes following aware error responses,which indicated impairment of error awareness following ***,the stress group had lower accuracy in post-aware error responses than in post-unaware error responses and the control group,which indicated poor post-error adjustment following *** results showed a stress effect on sequential stages of error *** induces impaired error identification,which further generates maladaptive post-error performance.

关键词： Acute stress Error awareness Post-error adjustment Error positivity

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Response of Bacterial Community and Enzyme Activity of Greenhouse Tomato under Different Irrigation systems

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Phyton-International journal of Experimental Botany 2024年第7期93卷 1543-1568页

作者： Haijian Yang Mingzhi Zhang na Xiao Yuan Li Faculty of Engineering Huanghe Science and Technology UniversityZhengzhou450063China Northwest Land and Resources Research Center Shaanxi Normal UniversityXi’an710119China

The micro-sprinkler irrigation mulched(MsM)has been suggested as a novel water-saving approach in con-trolled environment ***,the effects of microbial community structure and enzyme activity in the rhizosphere soil on crop growth under MsM remain *** study conducted a randomized experimen-tal design using greenhouse tomatoes to investigate changes in bacterial community structure and enzyme activity in rhizosphere soil under different irrigation frequencies(F)and amounts(I)of ***ﬁndings revealed that with the increase of F or I,The total count of soil bacteria in tomatoesﬁrst rose and then fell in terms of Opera-tional Taxonomic Units(OTUs)classiﬁ*** to other F,the most abundance of nitrogen and phos-phorus metabolism genes and enzyme activities were observed with a 5-day ***,the diversity of soil bacterial community structure initially rose before eventually declining with the increase of the *** 1.00 Epan(cumulative evaporation of a 20 cm standard pan)under MsM helped boost the abundance of nitrogen and phosphorus metabolism functional genes in soil bacteria,ensuring higher enzyme activities related to nitro-gen,carbon,and phosphorus metabolism in the rhizosphere soil of ***’yield initially rose before eventually declining with the increase in F or I,whereas I had a more signiﬁcant effect on yield.A 1.00%increase in I yielded a minimum of 39.24%increase in tomato *** study showed a positive correlation between soil bacterial community,soil enzyme activity,and greenhouse tomato yield under *** the results comprehensively,the combined irrigation mode of F of 5 d and I of 1.00 Epan was recommended for greenhouse tomatoes under *** conclusion provides theoretical support for water-saving practices and yield improve-ment in facility agriculture,especially tomato cultivation.

关键词： Greenhouse tomato yield bacterial community enzyme activity model

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Fluorescent Probes for Cysteine and Cysteine Oxidation Imaging

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Chemical Research in Chinese Universities 2024年第2期40卷 225-236页

作者： ZHANG Xia LI Guocheng PAN Wei LI na LI Yanhua TANG Bo College of Chemistry Chemical Engineering and Materials ScienceKey Laboratory of Molecular and Nano ProbesMinistry of EducationCollaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of ShandongInstitute of Molecular and Nano ScienceShandong Normal UniversityJinan250014P.R.China Laoshan Laboratory Qingdao266237P.R.China

Cysteine is an important regulator of redox *** to the nucleophilic and oxidative sensitivity,cysteine residues in proteins can be oxidized by intracellular reactive oxygen species(ROs),which can lead to protein structural and functional ***,the development of fluorescent probes to image cysteine and cysteine oxidation is of great significance for the study of redox homeostasis in living *** this review,the development of fluorescent probes for imaging cysteine and cysteine oxidation was ***,we further analyzed defects of the reported fluorescent probes and made suggestions for the future development of fluorescent *** expect that this review can not only provide a deeper understanding of the role of cysteine and cysteine oxidation in oxidative stress,but also broaden the application of fluorescent probes in imaging cysteine and cysteine oxidation.

关键词： Cysteine Cysteine oxidation Fluorescent probe Oxidative stress

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Tofacitinib for ulcerative colitis: A promising treatment option

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World journal of Gastroenterology 2024年第40期30卷 4386-4392页

作者： Zong-Qiang Han Li-na Wen Department of Laboratory Medicine Beijing Xiaotangshan HospitalBeijing 102211China Department of Clinical Nutrition Beijing Shijitan HospitalCapital Medical UniversityBeijing 100038China

A single center retrospective clinical study revealed the efficacy and safety of tofa-citinib in the treatment of ulcerative colitis(UC).This study has clinical reference value but also has some *** studies,including this clinical trial,have shown that tofacitinib could be a promising treatment option for UC,but further clinical research is required to prove this point.

关键词： Tofacitinib Ulcerative colitis Efficacy safety Clinical trials

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Microstructure design of advanced magnesium-air battery anodes

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journal of Magnesium and Alloys 2024年第2期12卷 443-464页

作者： Xu Huang Qingwei Dai Qing Xiang na Yang Gaopeng Zhang Ao shen Wanming Li school of Metallurgy and Materials Engineering Chongqing University of Science and TechnologyChongqing 401331China school of Materials and Architectural Engineering Guizhou Normal UniversityGuiyang 550025China school of Material and Metallurgy University of Science and Technology LiaoningAnshan 114051China

Metal-air battery is an environmental friendly energy storage system with unique open ***(Mg)and its alloys have been extensively attempted as anodes for air batteries due to high theoretical energy density,low cost,and ***,the study on Mg-air battery(MAB)is still at the laboratory level currently,mainly owing to the low anodic efficiency caused by the poor corrosion *** order to reduce corrosion losses and achieve optimal utilization efficiency of Mg anode,the design strategies are reviewed from microstructure ***,the corrosion behaviors have been discussed,especially the negative difference effect derived by hydrogen *** attention is given to the effect of anode micro-structures on the MAB,which includes grain size,grain orientation,second phases,crystal structure,twins,and *** further improvement,the discharge performance,long period stacking ordered phase and its enhancing effect are ***,given the current debates over Mg dendrites,the potential risk,the impact on discharge,and the elimination strategies are *** control and single crystal would be promising ways for MAB anode.

关键词： Magnesium Air battery Anode Microstructure Anodic efficiency

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