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Diving dynamics identification and motion prediction for marine crafts using field data

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Journal of Ocean engineering and Sc.ence 2024年第4期9卷 391-400页

作者： Yiming Zhong caoyang Yu Yulin Bai Zheng Zeng lian lian School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China Key Laboratory of Polar Ecosystem and climate change Ministry of EducationShanghai Jiao Tong UniversityShanghai 200030China Shanghai Key Laboratory of Polar Life and environment Sc.ences Shanghai Jiao Tong UniversityShanghai 200030China State Key Laboratory of Ocean engineering Shanghai Jiao Tong UniversityShanghai 200240China

ensuring accurate parameter identification and diving motion prediction of marine crafts is essential for safe navigation,optimized operational effic.ency,and the advancement of marine *** this,this paper proposes an instrumental variable-based least squares(IVLS)***,aiming to balance complexity with accuracy,a decoupled diving model is constructed,incorporating nonlinear actuator characteristics,inertia coeffic.ents,and damping ***,a discrete parameter identification matrix is designed based on this dedicated model,and then a IVLS algorithm is innovatively derived to reject measurement ***,the stability of the proposed algorithm is validated from a probabilistic point of view,providing a solid theoretical ***,performance evaluation is conducted using four depth control datasets obtained from a piston-driven profiling float in Qiandao Lake,with desired depths of 30 m,40 m,50 m,and 60 *** on the diving dynamics identification results,the IVLS algorithm consistently shows superior performance when compared to recursive weighted least squares algorithm and least squares support vector machine algorithm across all depths,as evidenced by lower average absolute error(AVGAE),root mean square error(RMSE),and maximum absolute error values and higher determination coeffic.ent(R2).Specifically,for desired depth of 60 m,the IVLS algorithm achieved an AVGAE of 0.553 m and RMSE of 0.655 m,significantly outperforming LSSVM with AVGAE and RMSE values of 8.782 m and 11.117 m,***,the IVLS algorithm demonstrates a remarkable generalization capability with R2 values consistently above 0.95,indicating its robustness in handling varied diving dynamics.

关键词： Marine craft Parameter identification Motion prediction Instrumental variable-based least-squares algorithm Diving dynamics model

Application-driven development of a thermal imaging-based cabin occupant thermal sensation assessment model and its validation

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Building Simulation 2024年第8期17卷 1401-1417页

作者： Junmeng Lyu Yuxin Yang Yongxiang Shi Zhiwei lian Department of Architecture School of DesignShanghai Jiao Tong UniversityShanghaiChina

The air conditioning(A/c)of cabins allows for customized control,but manual adjustments may distract drivers,as well as result in energy *** existing thermal sensation models require complex inputs,which are challenging to gather whilst *** address this issue,this study developed a non-contact thermal sensation model for cabin occupants based on thermal imaging *** collect actual data used for modeling,an outdoor subject experiment was *** this study,initial training was conducted to compare the performance of six algorithms in building the model,with random forests algorithm showing the best ***,this study employed the recursive feature elimination(RFE)method with cross-validation algorithm for identifying the key *** the end,the model was retrained using the selected *** model that incorporated both environmental parameters and facial-temperature features demonstrated the best performance,with an R2 of 0.659 on the test *** the hard-to-measure windshield surface temperature resulted in a slight reduction in accuracy,yielding an R2 of *** verify the generalizability of the model,this study further conducted independent validation *** selected model,which exhibited a mean absolute error(MAE)of less than 0.4 in thermal sensation units,was proven to be highly *** results can offer new solutions for automatic control of cabin A/c.

关键词： model assessment thermal imaging vehicle air conditioner thermal sensation transient cabin indoor environment

enhancing pediatric asthma management through multifaceted health education

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World Journal of clinical cases 2024年第19期12卷 3708-3716页

作者： Guang-Qun Lin Zu-Qiong Ye en-lian Song Yu-Nan Lin Department of Pediatrics First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Day Surgery Ward First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina Anesthesia&Operation center First Affiliated Hospital of Guangxi Medical UniversityNanning 530021Guangxi Zhuang Autonomous RegionChina

BAcKGROUND Pediatric asthma is a significant public health issue that impacts the quality of life of children *** management approaches focus on symptom control and medication adherence but often overlook the comprehensive educational needs of patients and their families.A multifaceted health education approach may offer a more holistic strategy in managing pediatric asthma,especially in outpatient *** To evaluate the efficacy of a comprehensive health education strategy in improving disease management,medication adherence,and quality of life among children with asthma in outpatient *** In total,100 pediatric patients with severe asthma were enrolled from January 2021 to November 2022 and randomly allocated to a control group(n=50)or an observation group(n=50).The control group received standard nursing care,including basic nursing interventions and health education upon *** contrast,the observation group was exposed to a broad spectrum of health education methodologies,including internet-based hospital systems,social media channels,one-on-one verbal education,informational brochures,slide present ations,telephone check-ins,animated videos,and illustrated health education *** on asthma management knowledge,symptom control,quality of life[***’s Respiratory Questionnaire(SGRQ)],treatment adherence,and nursing satisfaction were collected and *** The scores of the observation group in knowledge areas,such as medication,home care,disease understanding,symptom management,prevention strategies,and nutritional guidance,were significantly higher than those of the control group(Pcontrol,improved quality of life based on their SGRQ scores,and higher treatment adherence post-intervention(Pction was also rated higher in the observation group across all evaluated areas(PcONcLUSION Implementing a diversified hea

关键词： Multifaceted health education mode Pediatrics Outpatient service Bronchial asthma

A new 4-Ti-added polyoxometalate

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Tungsten 2024年第2期6卷 465-471页

作者： Hai-Lou Li c.en lian Guo-Yu Yang MOE Key Laboratory of cluster Sc.ence School of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 102488China

A new inorganic–organic hybrid 4-Ti-added polyoxometalate:[H_(2)N(cH_(3))_(2)]_(2)Na_(3)H_(5)[{Ti(c_(2)O_(4))(H_(2)O)}_(2){Ti(c_(2)O_(4))}_(2)(B-β-SbW_(9)O_(33))_(2)]·22H_(2)O(1)has been successfully made and further characterized by infrared spectroscopy,thermogravimetric analysis,powder X-ray diff raction and single-crystal X-ray diff *** polyoxoanion of 1 exhibits a Krebs-type structure that is constructed from two[B-β-SbW_(9)O_(33)]^(9)−fragments fused together by a belt of four additional Ti atoms decorated by oxalate ***,1 as a heterogeneous catalyst exhibits high activity for Knoevenagel condensation under mild reaction conditions.

关键词： Polyoxometalate Ti-added POM Krebs-type structure Knoevenagel condensation

Simulation Study on constraining Gravitational Wave Propagation Speed by Gravitational Wave and Gamma-ray Burst Joint Observation on Binary Neutron Star Mergers

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Research in Astronomy and Astrophysics 2024年第8期24卷 42-51页

作者： Jin-Hui Rao Shu-Xu Yi lian Tao Qing-Wen Tang Department of Physics School of Physics and Materials ScienceNanchang UniversityNanchang 330031China Institute of High energy Physics Chinese Academy of SciencesBeijing 100049China

Theories of modified gravity suggest that the propagation speed of gravitational waves(GW)v_gmay deviate from the speed of light c.A constraint can be placed on the difference between c and v_gwith a simple method that uses the arrival time delay between GW and electromagnetic wave simultaneously emitted from a burst *** simulated the joint observation of GW and short gamma-ray burst signals from binary neutron star merger events in different observation campaigns,involving advanced LIGO(aLIGO)in design sensitivity and Einstein Telescope(ET)joint-detected with Fermi/*** a result,the relative precision of constraint on v_gcan reach~10~(-17)(aLIGO)and~10^(-18)(ET),which are one and two orders of magnitude better than that from GW170817,*** continue to obtain the bound of graviton mass m_g≤7.1(3.2)×10~(-20)eV with aLIGO(ET).Applying the Standard-Model Extension test framework,the constraint on v_gallows us to study the Lorentz violation in the nondispersive,nonbirefringent limit of the gravitational *** obtain the constraints of the dimensionless isotropic coeffic.ents S_(00)^(4)at mass dimension d=4,which are-1×10^(-15)

关键词： gravitational waves-(stars)gamma-ray burst general-stars neutron

engineering g-c_(3)N_(4)based materials for advanced photocatalysis:Recent advances

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Green energy & environment 2024年第2期9卷 166-197页

作者： Xin-lian Song Lei c.en Li-Jiao Gao Jin-Tao Ren Zhong-Yong Yuan National Institute for Advanced Materials School of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin300350China Key Laboratory of Advanced energy Materials chemistry(Ministry of Education) Nankai UniversityTianjin300071China

Photocatalysis driven by abundant yet intermittent solar energy has considerable potential in renewable energy generation and environmental *** outstanding electronic structure and physicochemical properties of graphitic carbon nitride(g-c_(3)N_(4)),together with unique metal-free characteristic,make them ideal candidates for advanced photocatalysts *** review summarizes the up-to-date advances on g-c_(3)N_(4)based photocatalysts from ingenious-design strategies and diversified photocatalytic ***,the advantages,fabrication methods and limitations of each design strategy are systemically *** order to deeply comprehend the inner connection of theory–structure–performance upon g-c_(3)N_(4)based photocatalysts,structure/composition designs,corresponding photocatalytic activities and reaction mechanisms are jointly discussed,associated with introducing their photocatalytic applications toward water splitting,carbon dioxide/nitrogen reduction and pollutants degradation,***,the current challenges and future perspectives for g-c_(3)N_(4)based materials for photocatalysis are briefly *** design strategies and limitations are also instructive for constructing g-c_(3)N_(4) based materials in other energy and environment-related applications.

关键词： Graphitic carbon nitride g-c_(3)N_(4) Design strategies Photocatalysis Photocatalysts Reaction mechanism

Physical Layer encryption of OFDM-PON Based on Quantum Noise Stream cipher with Polar code

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china communications 2024年第3期21卷 174-188页

作者： Xu Yinbo Gao Mingyi Zhu Huaqing c.en Bowen Xiang lian Shen Gangxiang Jiangsu engineering Research center of Novel Optical Fiber Technology and communication Network Suzhou Key Laboratory of Advanced Optical Communication Network Technologythe School of Electronic and Information EngineeringSoochow UniversityNo.1 Shizi StreetSuzhou 215006China

Orthogonal frequency division multiplexing passive optical network(OFDM-PON) has superior anti-dispersion property to operate in the c-band of fiber for increased optical power budget. However,the downlink broadcast exposes the physical layer vulnerable to the threat of illegal eavesdropping. Quantum noise stream cipher(QNSc) is a classic physical layer encryption method and well compatible with the OFDM-PON. Meanwhile, it is indispensable to exploit forward error correction(FEc) to control errors in data transmission. However, when QNSc and FEc are jointly coded, the redundant information becomes heavier and thus the code rate of the transmitted signal will be largely reduced. In this work, we propose a physical layer encryption scheme based on polar-code-assisted QNSc. In order to improve the code rate and security of the transmitted signal, we exploit chaotic sequences to yield the redundant bits and utilize the redundant information of the polar code to generate the higher-order encrypted signal in the QNSc scheme with the operation of the *** experimentally demonstrate the encrypted 16/64-QAM, 16/256-QAM, 16/1024-QAM, 16/4096-QAM QNSc signals transmitted over 30-km standard single mode fiber. For the transmitted 16/4096-QAM QNSc signal, compared with the conventional QNSc method, the proposed method increases the code rate from 0.1 to 0.32 with enhanced security.

关键词： physical layer encryption polar code quantum noise stream cipher

Experimental Study on the Performance of ORc System Based on Ultra-Low Temperature Heat Sources

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energy engineering 2024年第1期121卷 145-168页

作者： Tianyu Zhou liang Hao Xin Xu Meng Si lian Zhang college of Mechanical engineering Tianjin University of Science&TechnologyTianjin300222China School of energy engineering Tianjin Sino-German University of Applied SciencesTianjin300350China Tianjin“The Belt and Road”Joint Laboratory Tianjin Sino-German University of Applied SciencesTianjin300350China

This paper discussed the experimental results of the performance of an organic Rankine cycle(ORc)system with an ultra-low temperature heat *** low boiling point working medium R134a was adopted in the *** simulated heat source temperature(SHST)in this work was set from 39.51°c to 48.60°c by the simulated heat source *** influence of load percentage of simulated heat source(LPSHS)between 50%and 70%,the rotary valve opening(RVO)between 20%and 100%,the resistive load between 36Ωand 180Ωor the no-load of the generator,as well as the autumn and winter ambient temperature on the system performance were *** results showed that the stability of the system was promoted when the generator had a resistive *** power generation(PG)and generator speed(GS)of the system in autumn were better than in winter,but the expander pressure ratio(EPR)was lower than in *** RVO unchanged,the SHST,the mass flow rate(MFR)of the working medium,GS,and the PG of the system increased with the increasing of LPSHS for different generator resistance load *** the RVO was 60%,LPSHS was 70%,the SHST was 44.15°c and the resistive load was 72Ω,the highest PG reached 15.11 ***,a simulation formula was obtained for LPSHS,resistance load,and PG,and its correlation coeffic.ent was between 0.9818 and *** formula can accurately predict the *** experimental results showed that the standard deviation between the experimental and simulated values was below 0.0792,and the relative error was within±5%.

关键词： ORc load percentage of simulated heat source resistive load rotary valve opening power generation

Astragaloside IV Alleviates Acute Liver Failure Induced by D-GalN/LPS by Upregulating Autophagy and Reducing Inflammation

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Infectious Microbes & Diseases 2024年第1期6卷 20-28页

作者： Meng Hong Wenwen lian Ying Yang Zhi c.en State Key Laboratory for Diagnosis and Treatment of Infectious Diseases National Clinical Research Center for Infectious DiseasesNational Medical Center for Infectious DiseasesCollaborative Innovation Center for Diagnosis and Treatment of Infectious DiseasesThe First Affiliated HospitalZhejiang University School of MedicineHangzhouChina

Acute liver failure(ALF)is a life-threatening condition that manifests in an extremely serious manner and progresses *** following study investigated the protective effect of astragaloside IV(AS-IV),a traditional chinese drug,on ALF,and its underlying mechanisms,focusing on autophagy and inflammation *** were randomly divided into a saline group,a D-galactosamine and lipopolysac-charide(D-GalN/LPS)group and an AS-IV *** analysis,immunohistochemistry,cytometric bead array,high-throughput quantitative PcR,flow cytometry and Western analysis were used to assess inflammation and liver damage 5 hours after D-GalN/LPS *** IV treatment reduced mortality by alleviating D-GalN/LPS–induced hepatic damage and decreasing inflammation(decreasing Ly6c+monocyte levels,reducing inflammatory cytokines and increasing anti-inflammatory factors)as well as upregulating ***,PcR array was used to detect expression of autophagy-related genes,which demonstrated a Log2 fold change in gene expression between the AS-IV and D-GalN/LPS groups ranging from 1.19 to-3.53,with Tnfsf10 showing the largest alteration be-tween the two *** data suggest that AS-IV may alleviate ALF by upregulating autophagy and reducing inflammation,and it may therefore be an interesting drug for alleviating ALF.

关键词： astragaloside IV acute liver failure inflammation autophagy