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Survey and Prospect for Applying Knowledge Graph in Enterprise Risk Management

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Computers, Materials & Continua 2024年第3期78卷 3825-3865页

作者： Pengjun Li Qixin Zhao yingmin Liu Chao Zhong Jinlong Wang Zhihan lyu School of Information and Control Engineering Qingdao University of TechnologyQingdao266520China Department of Game Design Uppsala UniversityVisby62167Sweden

Enterprise risk management holds significant importance in fostering sustainable growth of businesses and in serving as a critical element for regulatory bodies to uphold market *** the challenges posed by intricate and unpredictable risk factors,knowledge graph technology is effectively driving risk management,leveraging its ability to associate and infer knowledge from diverse *** review aims to comprehensively summarize the construction techniques of enterprise risk knowledge graphs and their prominent applications across various business ***,employing bibliometric methods,the aim is to uncover the developmental trends and current research hotspots within the domain of enterprise risk knowledge *** the succeeding section,systematically delineate the technical methods for knowledge extraction and fusion in the standardized construction process of enterprise risk knowledge *** comparing and summarizing the strengths and weaknesses of each method,we provide recommendations for addressing the existing challenges in the construction ***,categorizing the applied research of enterprise risk knowledge graphs based on research hotspots and risk category standards,and furnishing a detailed exposition on the applicability of technical routes and ***,the future research directions that still need to be explored in enterprise risk knowledge graphs were discussed,and relevant improvement suggestions were *** and researchers can gain insights into the construction of technical theories and practical guidance of enterprise risk knowledge graphs based on this foundation.

关键词： Knowledge graph enterprise risk risk identification risk management review

Theory and practice of hull dynamic deformation law and heading angle transfer error correction

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Journal of Ocean Engineering and Science 2024年第2期9卷 191-198页

作者： yepin Qu Jianqiang Liu yuhai lyu Chaoran Zhang Tao Li Naval Research Institute Shanghai 200436PR China

In order to meet the demand of high-precision heading angle transmission in the transfer alignment of inertial navigation system on moving base,the analytical function relationship between the hull deforma-tion and the turning angular velocity and angular acceleration was derived by using the classical beam theory based on the analysis of the equivalent load exerted by the hydrodynamic force and inertia force on the hull structure during the turning process under the combined action of the steering rudder mo-ment and wave *** objective law between the angular motion and the azimuth deformation angle of the hull under the combined action of maneuvering and sea waves was ***,the correc-tion coefficients were determined according to the left turn and right turn motions of the hull by using the measured data of the ship in the sea trial during the S-shape maneuvering navigation,and the az-imuth deformation angle correction was *** results indicated that the application of the Qu’s bending deformation correction formula could greatly reduce the influence of the hull flexural deforma-tion on the heading angle accuracy,meet the needs of high-precision heading angle transmission,and fully verify the correctness of the hull azimuth deformation law and the heading angle transmission er-ror correction *** theory and method provided technical support for establishing high-precision distributed digital reference in the field of transfer alignment of inertial navigation on moving base and the application of heading angle transfer of other shipborne equipment.

关键词： Hull deformation Hull girder Heading angle Alignment on moving Base Transfer alignment Error correction

Enhancing Data Forwarding Efficiency in SIoT with Multidimensional Social Relations

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Computers, Materials & Continua 2024年第1期78卷 1095-1113页

作者： Fang Xu Songhao Jiang yi Ma Manzoor Ahmed Zenggang Xiong yuanlin lyu School of Computer and Information Science Hubei Engineering UniversityXiaogan432000China School of Computer Science and Information Engineering Hubei UniversityWuhan430062China Artificial Intelligence Industrial Technology Research Institute Hubei Engineering UniversityXiaogan432000China

Effective data communication is a crucial aspect of the Social Internet of Things(SIoT)and continues to be a significant research *** paper proposes a data forwarding algorithm based on Multidimensional Social Relations(MSRR)in SIoT to solve this *** proposed algorithm separates message forwarding into intra-and cross-community forwarding by analyzing interest traits and social connections among *** new metrics are defined:the intensity of node social relationships,node activity,and community *** the community,messages are sent by determining which node is most similar to the sender by weighing the strength of social connections and node *** a node performs cross-community forwarding,the message is forwarded to the most reasonable relay community by measuring the node activity and the connection between *** proposed algorithm was compared to three existing routing algorithms in simulation *** indicate that the proposed algorithmsubstantially improves message delivery efficiency while lessening network overhead and enhancing connectivity and coordination in the SIoT context.

关键词： SIoT data forwarding social attributes social relations community

Engineering a non-model yeast Rhodotorula mucilaginosa for terpenoids synthesis

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Synthetic and Systems Biotechnology 2024年第3期9卷 569-576页

作者： Qiongqiong Chen Liting lyu Haizhao Xue Aabid Manzoor Shah Zongbao Kent Zhao Laboratory of Biotechnology Dalian Institute of Chemical PhysicsCAS457 Zhongshan RoadDalian116023China MOE Key Laboratory of Bio-Intelligent Manufacturing School of BioengineeringDalian University of TechnologyDalian116024China University of Chinese Academy of Sciences 19 Yuquan RoadBeijing100049China

Terpenoids have tremendous biological activities and are widely employed in food,healthcare and pharmaceutical *** synthetic biology to product terpenoids from microbial cell factories presents a promising alternative route compared to conventional methods such as chemical synthesis or *** red yeast Rhodotorula mucilaginosa has been widely studied due to its natural production capacity of carotenoid and lipids,indicating a strong endogenous isoprene pathway with readily available metabolic *** study constructed several engineered strains of *** with the aim of producing different ***α-terpineol was produced by expressing theα-terpineol synthase from Vitis *** titer ofα-terpineol was further enhanced to 0.39 mg/L by overexpressing the endogenous rate-limiting gene of the MVA *** ofα-farnesene synthase from Malus domestica,in combination with MVA pathway rate-limiting gene resulted in significant increase inα-farnesene production,reaching a titer of 822 mg/*** carotenoid degradation productβ-ionone was produced at a titer of 0.87 mg/L by expressing theβ-ionone synthase from Petunia *** study demonstrates the potential of *** as a platform host for the direct biosynthesis of various terpenoids and provides insights for further development of such platforms.

关键词： Rhodotorula mucilaginosa Synthetic biology α-Terpineol β-Ionone α-Farnesene

Numerical investigation on compressible flow around a cylinder in proximity to the heated wall

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Journal of Hydrodynamics 2024年第3期36卷 519-533页

作者： yu-lu Liu Jun-wang Qu yi-zhou Tao yong-guang lyu Xiang Qiu Shanghai Institute of Technology School of ScienceShanghai201418China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai200072China

In this study,direct numerical simulations were conducted to investigate the compressible flow around a circular cylinder near a heated wall at a Reynolds number(Re)of 500 and a Mach number(Ma)of *** heating ratio T^(*)ranging from 1.0 to 1.6 represents the different situations of a heated wall,whereas the gap ratio ranges from 0.3 to *** study analyzed the impact of heating effect and wall proximity on flow characteristics and aerodynamic *** results indicated that the stability of the flow was enhanced as the gap ratio decreased or the heating ratio *** the calculation of enstrophy,it was found that the strength of shedding vortices weakens with a decrease in gap ratio or an increase in heating ***,the mean drag coefficient decreases as the heating ratio increases or the gap ratio *** contrast,the mean lift coefficient initially decreases and then increases as the gap ratio ***,the drag reduction mechanism was analyzed by examining the pressure distribution on the surface of the cylinder.

关键词： Compressible flow wall proximity heating effect stability enstrophy

A data-fusion-model method for state of health estimation of Li-ion battery packs based on partial charging curve

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Green Energy and Intelligent Transportation 2024年第5期3卷 1-12页

作者： Xingzi Qiang Wenting Liu Zhiqiang lyu Haijun Ruan Xiaoyu Li School of Internet Anhui UniversityHefei230039China Institute for Clean Growth&Future Mobility Coventry UniversityUK School of Mechanical Engineering Hebei University of TechnologyTianjin300130China

The estimation of State of Health(SOH)for battery packs used in Electric Vehicles(EVs)is a complex task with significant importance,accompanied by several *** study introduces a data-fusion model approach to estimate the SOH of battery *** approach utilizes dual Gaussian Process Regressions(GPRs)to construct a data-driven and non-parametric aging model based on charging-based Aging Features(AFs).To enhance the accuracy of the aging model,a noise model is established to replace the random ***,the statespace representation of the aging model is ***,the Particle Filter(PF)is introduced to track the unknown state in the aging model,thereby developing the data-fusion-model for SOH *** performance of the proposed method is validated through aging experiments conducted on battery *** simulation results demonstrate that the data-fusion model approach achieves accurate SOH estimation,with maximum errors less than 1.5%.Compared to conventional techniques such as GPR and Support Vector Regression(SVR),the proposed method exhibits higher estimation accuracy and robustness.

关键词： Li-ion battery pack State of health Data-fusion-model method Particle filter Gaussian process regression Support vector regression

Optimization and experimental analysis of sweet potato ship-shaped transplanting trajectory using particle swarm algorithm

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International Journal of Agricultural and Biological Engineering 2024年第3期17卷 100-107页

作者： Zhengduo Liu Lin Hua Zhaoqin lyu Jiaji Hu Wenxiu Zheng College of Mechanical and Vehicle Engineering West Anhui UniversityLu’an 237000AnhuiChina Traditional Chinese Medicine Institute of Anhui Dabie Mountain West Anhui UniversityLu’an 237012AnhuiChina College of Mechanical and Electronic Engineering Shandong Agricultural UniversityTai’an 271018ShandongChina Anhui Zhengyang Machinery Technology Co. Ltd.Lu’an 237012AnhuiChina

The mechanization of ship-shaped transplanting is currently an urgent problem that should be *** movement trajectory of the transplanting mechanism is the key technology to perform ship-shaped *** this study,a ship-shaped transplanting trajectory was built and a mathematical model of a four-link transplanting mechanism was developed based on the requirements of the sweet potato transplanting agronomic *** particle swarm optimization algorithm was used,with the length of the four-bar mechanism and the installation angle of the fixed bar serving as the variables to *** objective was to minimize the deviation of the ship-shaped transplanting trajectory,yielding an iterative optimization *** MATLAB simulation results showed that the penalty factors of different proportions in the adaptive particle swarm optimization algorithm affected the transplanting *** optimal penalty factor parameters areα=0.6,β=*** ensure that the transplanting trajectory fulfills the agronomic requirements,and limit the deviation in the return trajectory of the *** sizes of the optimized four-bar mechanism were 110,312,245,160,360,and,160 *** determined installation angle was 100°.The results of the field experiments demonstrated that the optimized four-bar transplanting mechanism can better fulfill the agronomic technical requirements of sweet potato ship-shaped *** a transplanting speed of 0.2 m/s,the average qualified rates of insertion depth,insertion length,and tail height were equal to 94.00%,93.83%,and 91.67%.The results obtained in this study provide a theoretical basis and technical support for studying and developing sweet potato ship-shaped transplanting machinery.

关键词： sweet potato oblique insertion method mechanical arm particle swarm

Application of fluid modulus inversion to complex lithology reservoirs in deep-water areas

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Energy Geoscience 2024年第1期5卷 153-161页

作者： Zhaoming Chen Huaxing lyu Zhongtao Zhang yanhui Zhu Baojun Liu CNOOC Deepwater Development Limited ShenzhenGuangdong518054China

It has been a challenge to distinguish between seismic anomalies caused by complex lithology and hydrocarbon reservoirs using conventional fluid identification techniques,leading to difficulties in accurately predicting hydrocarbon-bearing properties and determining oil-water contacts in *** this study,we built a petrophysical model tailored to the deep-water area of the Baiyun Sag in the eastern South China Sea based on seismic data and explored the feasibility of the tri-parameter direct inversion method in the fluid identification of complex lithology reservoirs,offering a more precise alternative to conventional *** research found that the fluid modulus can successfully eliminate seismic amplitude anomalies caused by lithological ***,the seismic databased direct inversion for fluid modulus can remove the cumulative errors caused by indirect inversion and the influence of *** discovered that traditional methods using seismic amplitude anomalies were ineffective in detecting fluids,determining gas-water contacts,or delineating high-quality ***,the fluid factor Kf,derived from solid-liquid decoupling,proved to be sensitive to the identification of hydrocarbon-bearing properties,distinguishing between high-quality and poor-quality gas *** findings confirm the value of the fluid modulus in fluid identification and demonstrate that the tri-parameter direct inversion method can significantly enhance hydrocarbon exploration in deep-water areas,reducing associated risks.

关键词： Fluid identification Seismic fluid factor Solid-liquid decoupling Deep-water area Complex lithology reservoir

Achieving asymmetric redox chemistry for oxygen evolution reaction through strong metal-support interactions

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Journal of Energy Chemistry 2024年第9期96卷 526-535页

作者： Shihao Wang Meiling Fan Hongfei Pan Jiahui lyu Jinsong Wu Haolin Tang Haining Zhang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina National Energy Key Laboratory for New Hydrogen-Ammonia Energy Technologies Foshan Xianhu LaboratoryFoshan 528200GuangdongChina International School of Materials Science and Engineering(School of Materials and Microelectronics) Wuhan University of TechnologyWuhan 430070HubeiChina Nanostructure Research Centre Wuhan University of TechnologyWuhan 430070HubeiChina Hubei Key Laboratory of Fuel Cell Wuhan University of TechnologyWuhan 430070HubeiChina

Water electrolysis poses a significant challenge for balancing catalytic activity and stability of oxygen evolution reaction(OER)*** this study,we address this challenge by constructing asymmetric redox chemistry through elaborate surface OO–Ru–OH and bulk Ru–O–Ni/Fe coordination moieties within single-atom Ru-decorated defective NiFe LDH nanosheets(Ru@d-NiFe LDH)in conjunction with strong metal-support interactions(SMSI).Rigorous spectroscopic characterization and theoretical calculations indicate that single-atom Ru can delocalize the O 2p electrons on the surface and optimize d-electron configurations of metal atoms in bulk through ***^(18)O isotope labeling experiment based on operando differential electrochemical mass spectrometry(DEMS),chemical probe experiments,and theoretical calculations confirm the encouraged surface lattice oxygen,stabilized bulk lattice oxygen,and enhanced adsorption of oxygen-containing intermediates for bulk metals in Ru@d-NiFe LDH,leading to asymmetric redox chemistry for *** Ru@d-NiFe LDH electrocatalyst exhibits exceptional performance with an overpotential of 230 mV to achieve 10 mA cm^(−2)and maintains high robustness under industrial current *** approach for achieving asymmetric redox chemistry through SMSI presents a new avenue for developing high-performance electrocatalysts and instills confidence in its industrial applicability.

关键词： Reaction redox chemistry Strong metal-support interactions Layered double hydroxides Electrocatalysts Water electrolysis