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Deterministic wave prediction model for irregular long-crested waves with Recurrent Neural Network

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Journal of Ocean Engineering and Science 2024年第3期9卷 251-263页

作者： yue Liu Xiantao Zhang Gang Chen Qing Dong Xiaoxian Guo Xinliang Tian Wenyue Lu Tao peng State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University(SJTU)Shanghai 200240China SJTU Yazhou Bay Institute of Deepsea Technology SanyaHainan572000China

Real-time predicting of stochastic waves is crucial in marine *** this paper,a deep learning wave prediction(Deep-WP)model based on the‘probabilistic’strategy is designed for the short-term prediction of stochastic *** Deep-WP model employs the long short-term memory(LSTM)unit to collect pertinent information from the wave elevation time *** irregular long-crested waves generated in the deepwater offshore basin at Shanghai Jiao Tong University are used to validate and optimize the Deep-WP *** the prediction duration is 1.92s,2.56s,and,3.84s,respectively,the predicted results are almost identical with the ground *** the prediction duration is increased to 7.68s or 15.36s,the Deep-WP model’s error increases,but it still maintains a high level of accuracy during the first few *** introduction of covariates will improve the Deep-WP model’s performance,with the absolute position and timestamp being particularly advantageous for wave ***,the Deep-WP model is applicable to predict waves with different energy *** proposed Deep-WP model shows a feasible ability to predict nonlinear stochastic waves in real-time.

关键词： Real-time wave prediction Probability LSTM Covariate

Advances and challenges in thermal runaway modeling of lithium-ion batteries

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The Innovation 2024年第4期5卷 172-186,171页

作者： Gongquan Wang Ping Ping Depeng Kong Rongqi peng Xu He yue Zhang Xinyi Dai Jennifer Wen Center for Offshore Engineering and Safety Technology China University of Petroleum(East China)Qingdao 266580China College of Chemical Engineering China University of Petroleum(East China)Qingdao 266580China Centre for Energy Resilience School of Mechanical Engineering SciencesUniversity of SurreyGuildfordSurrey GU27XHUK

The broader application of lithium-ion batteries(LIBs)is constrained by safety concerns arising from thermal runaway(TR).Accurate prediction of TR is essential to comprehend its underlying mechanisms,expedite battery design,and enhance safety protocols,thereby significantly promoting the safer use of *** complex,nonlinear nature of LIB systems presents substantial challenges in TR modeling,stemming from the need to address multiscale simulations,multiphysics coupling,and computing efficiency *** paper provides an extensive review and outlook on TR modeling technologies,focusing on recent advances,current challenges,and potential future *** begin with an overview of the evolutionary processes and underlying mechanisms of TR from multiscale perspectives,laying the foundation for TR *** a comprehensive understanding of TR phenomena and mechanisms,we introduce a multiphysics coupling model framework to encapsulate these *** this framework,we detail four fundamental physics modeling approaches:thermal,electrical,mechanical,and fluid dynamic models,highlighting the primary challenges in developing and integrating these *** address the intrinsic trade-off between computational accuracy and efficiency,we discuss several promising modeling strategies to accelerate TR simulations and explore the role of AI in advancing next-generation TR ***,we discuss challenges related to data availability,model scalability,and safety standards and regulations.

关键词： lithium thermal modeling

Reward Function Design Method for Long Episode Pursuit Tasks Under Polar Coordinate in Multi-Agent Reinforcement Learning

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Journal of Shanghai Jiaotong university(Science) 2024年第4期29卷 646-655页

作者： DONG Yubo CUI Tao ZHOU Yufan SONG Xun ZHU yue DONG peng School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai200240China Beijing Institute of Electronic System Engineering Beijing100854China

Multi-agent reinforcement learning has recently been applied to solve pursuit ***,it suffers from a large number of time steps per training episode,thus always struggling to converge effectively,resulting in low rewards and an inability for agents to learn *** paper proposes a deep reinforcement learning(DRL)training method that employs an ensemble segmented multi-reward function design approach to address the convergence problem mentioned *** ensemble reward function combines the advantages of two reward functions,which enhances the training effect of agents in long ***,we eliminate the non-monotonic behavior in reward function introduced by the trigonometric functions in the traditional 2D polar coordinates observation *** results demonstrate that this method outperforms the traditional single reward function mechanism in the pursuit scenario by enhancing agents’policy scores of the *** ideas offer a solution to the convergence challenges faced by DRL models in long episode pursuit problems,leading to an improved model training performance.

关键词： multi-agent reinforcement learning deep reinforcement learning(DRL) long episode reward function

Spent graphite regeneration:Exploring diverse repairing manners with impurities-catalyzing effect towards high performance and low energy consumption

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Journal of Energy Chemistry 2024年第4期91卷 656-669页

作者： Yu Dong Zihao Zeng Zhengqiao Yuan Bing Wang Hai Lei Wenqing Zhao Wuyun Ai Lingchao Kong yue Yang peng Ge School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083HunanChina Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450001HenanChina Shenzhen Xinmao New Energy Technology Co. LTDShenzhen 518100GuangdongChina

Spent battery recycling has received considerable attention because of its economic and environmental potential.A large amount of retired graphite has been produced as the main electrode material,accompanied by a detailed exploration of the repair ***,they still suffer from unclear repair mechanisms and physicochemical *** this study,spent graphite was repaired employing three methodologies:pickling-sintering,pyrogenic-recovery,and high-temperature *** to the catalytic effect of the metal-based impurities and temperature control,the as-obtained samples displayed an ordered transformation,including the interlayer distance,crystalline degree,and grain *** anodes of lithium ions batteries,the capacity of repaired samples reached up to 310 mA h g^(-1)above after 300loops at 1.0 C,similar to that of commercial ***,benefitting from the effective assembly of carbon atoms in internal structure of graphite at>1400℃,their initial coulombic efficiency were>87%.Even at 2.0 C,the capacity of samples remained approximately 244 mA h g^(-1)after 500 *** electrochemical and kinetic analyses revealed that a low temperature enhanced the isotropy,thereby enhancing the rate ***,economic and environmental analyses revealed that the revenue obtained through suitable pyrogenic-recovering manners was approximately the largest value(5500$t^(-1)).Thus,this study is expected to clarify the in-depth effect of different repair methods on the traits of graphite,while offering all-round evaluations of repaired graphite.

关键词： Spent graphite regeneration Repair Temperature treatment

Pretreatment and analysis techniques development of TKIs in biological samples for pharmacokinetic studies and therapeutic drug monitoring

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Journal of Pharmaceutical Analysis 2024年第4期14卷 439-459页

作者： Lan Chen Yuan Zhang Yi-Xin Zhang Wei-Lai Wang De-Mei Sun peng-Yun Li Xue-Song Feng yue Tan School of Pharmacy China Medical UniversityShenyang110122China Institute of Pharmacology and Toxicology Institution National Engineering Research Center for Strategic DrugsBeijing100850China Department of Gastroenterology Shengjing Hospital of China Medical UniversityShenyang110022China

Tyrosine kinase inhibitors(TKIs)have emerged as the first-line small molecule drugs in many cancer therapies,exerting their effects by impeding aberrant cell growth and proliferation through the modulation of tyrosine kinase-mediated signaling ***,there exists a substantial inter-individual variability in the concentrations of certain TKIs and their metabolites,which may render patients with compromised immune function susceptible to diverse infections despite receiving theoretically efficacious anticancer treatments,alongside other potential side effects or adverse ***,an urgent need exists for an up-to-date review concerning the biological matrices relevant to bioanalysis and the sampling methods,clinical pharmacokinetics,and therapeutic drug monitoring of different *** paper provides a comprehensive overview of the advancements in pretreatment methods,such as protein precipitation(PPT),liquid-liquid extraction(LLE),solid-phase extraction(SPE),micro-SPE(μ-SPE),magnetic SPE(MSPE),and vortex-assisted dispersive SPE(VA-DSPE)achieved since *** also highlights the latest analysis techniques such as newly developed high performance liquid chromatography(HPLC)and high-resolution mass spectrometry(HRMS)methods,capillary electrophoresis(CE),gas chromatography(GC),supercritical fluid chromatography(SFC)procedures,surface plasmon resonance(SPR)assays as well as novel nanoprobes-based biosensing *** addition,a comparison is made between the advantages and disadvantages of different approaches while presenting critical challenges and prospects in pharmacokinetic studies and therapeutic drug monitoring.

关键词： TKIs Microextraction technique HRMS methods Pharmacokinetic studies Therapeutic drug monitoring

Battlefield target intelligence system architecture modeling and system optimization

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Journal of Systems Engineering and Electronics 2024年第5期35卷 1190-1210页

作者： LI Wei WANG yue JIA Lijuan peng Senran HE Ruixi School of Information and Electronics Beijing Institute of TechnologyBeijing 100081China

To address the current problems of poor generality,low real-time,and imperfect information transmission of the battlefield target intelligence system,this paper studies the battlefield target intelligence system from the top-level perspective of multi-service joint ***,an overall planning and analysis method of architecture modeling is proposed with the idea of a bionic analogy for battlefield target intelligence system architecture modeling,which reduces the difficulty of the planning and design *** method introduces the Department of Defense architecture framework(DoDAF)modeling method,the multi-living agent(MLA)theory modeling method,and other combinations for planning and modeling.A set of rapid planning methods that can be applied to model the architecture of various types of complex systems is ***,the liveness analysis of the battlefield target intelligence system is carried out,and the problems of the existing system are presented from several *** the technical prediction of the development and construction is given,which provides directional ideas for the subsequent research and development of the battlefield target intelligence *** the end,the proposed architecture model of the battlefield target intelligence system is simulated and verified by applying the colored Petri nets(CPN)simulation *** analysis demonstrates the reasonable integrity of its logic.

关键词： battlefield target intelligence system architecture modeling bionic design system optimization simulation verification

Is recovery enhancement after gastric cancer surgery really a safe approach for elderly patients?

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World Journal of Gastrointestinal Oncology 2024年第4期16卷 1334-1343页

作者： Zi-Wei Li Xiao-Juan Luo Fei Liu Xu-Rui Liu Xin-peng Shu yue Tong Quan Lv Xiao-Yu Liu Wei Zhang Dong peng Department of Gastrointestinal Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400016China Department of Endoscopy Center The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400012China

BACKGROUND This study aimed to evaluate the safety of enhanced recovery after surgery(ERAS)in elderly patients with gastric cancer(GC).AIM To evaluate the safety of ERAS in elderly patients with *** The PubMed,EMBASE,and Cochrane Library databases were used to search for eligible studies from inception to April 1,*** mean difference(MD),odds ratio(OR)and 95%confidence interval(95%CI)were pooled for *** quality of the included studies was evaluated using the Newcastle-Ottawa Scale *** used Stata(V.16.0)software for data *** This study consists of six studies involving 878 elderly *** analyzing the clinical outcomes,we found that the ERAS group had shorter postoperative hospital stays(MD=-0.51,I2=0.00%,95%CI=-0.72 to-0.30,P=0.00);earlier times to first flatus(defecation;MD=-0.30,I²=0.00%,95%CI=-0.55 to-0.06,P=0.02);less intestinal obstruction(OR=3.24,I2=0.00%,95%CI=1.07 to 9.78,P=0.04);less nausea and vomiting(OR=4.07,I2=0.00%,95%CI=1.29 to 12.84,P=0.02);and less gastric retention(OR=5.69,I2=2.46%,95%CI=2.00 to 16.20,P=0.00).Our results showed that the conventional group had a greater mortality rate than the ERAS group(OR=0.24,I2=0.00%,95%CI=0.07 to 0.84,P=0.03).However,there was no statistically significant difference in major complications between the ERAS group and the conventional group(OR=0.67,I2=0.00%,95%CI=0.38 to 1.18,P=0.16).CONCLUSION Compared to those with conventional recovery,elderly GC patients who received the ERAS protocol after surgery had a lower risk of mortality.

关键词： Enhanced recovery after surgery Gastric cancer Elderly Mortality

Influence of reduced-port laparoscopic surgery on perioperative indicators, postoperative recovery, and serum inflammation in patients with colorectal carcinoma

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1734-1741页

作者： Hong-Biao Wu Dong-Fang Liu Ye-Lei Liu Xiao-Feng Wang yue-peng Cao Department of Colorectal Surgery The First Affiliated Hospital of Ningbo UniversityNingbo 315000Zhejiang ProvinceChina

BACKGROUND Conventional five-port laparoscopic surgery,the current standard treatment for colorectal carcinoma(CRC),has many *** To assess the influence of reduced-port laparoscopic surgery(RPLS)on perioperative indicators,postoperative recovery,and serum inflammation indexes in patients with *** The study included 115 patients with CRC admitted between December 2019 and May 2023,52 of whom underwent conventional five-port laparoscopic surgery(control group)and 63 of whom underwent RPLS(research group).Comparative analyses were performed on the following dimensions:Perioperative indicators[operation time(OT),incision length,intraoperative blood loss(IBL),and rate of conversion to laparotomy],postoperative recovery(first postoperative exhaust,bowel movement and oral food intake,and bowel sound recovery time),serum inflammation indexes[high-sensitivity C-reactive protein(hs-CRP),tumor necrosis factor-α(TNF-α),and interleukin-6(IL-6)],postoperative complications(anastomotic leakage,incisional infection,bleeding,ileus),and therapeutic *** The two groups had comparable OTs and IBL ***,the research group had a smaller incision length;lower rates of conversion to laparotomy and postoperative total complication;and shorter time of first postoperative exhaust,bowel movement,oral food intake,and bowel sound recovery;all of which were ***,hs-CRP,IL-6,and TNF-αlevels in the research group were significantly lower than the baseline and those of the control group,and the total effective rate was *** RPLS exhibited significant therapeutic efficacy in CRC,resulting in a shorter incision length and a lower conversion rate to laparotomy,while also promoting postoperative recovery,effectively inhibiting the inflammatory response,and reducing the risk of postoperative complications.

关键词： Reduced-port laparoscopic surgery Colorectal carcinoma Perioperative indicators Postoperative recovery Serum inflammation indexes

Simultaneous enhancement of energy storage performance and thermal stability of NaNbO_(3)-based ceramics via multi-scale modulation

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Journal of Materiomics 2024年第3期10卷 670-681页

作者： peng Nong Dafu Zeng yue Pan Qinpeng Dong Mingzhao Xu Xiang Wang Jiaming Wang Huanfu Zhou Xu Li Xiuli Chen Key Laboratory of Nonferrous Materials and New Processing Technology Ministry of EducationSchool of Materials Science and EngineeringGuilin University of TechnologyGuilin541004China

More and more attention is being paid to the environmental friendliness of the dielectric capacitors,which have a rapid charging and discharging speed and steady ***,the low recoverable energy storage density(W_(rec))limits the practical application of dielectric capacitors in solid-state energy storage *** this paper,(1-x)(0.92NaNbO_(3)-0.08Bi(Mg_(0.5)Ti_(0.5)O_(3))-xSrTiO_(3))(x=0.05,0.10,0.15,0.20)energy storage ceramics were fabricated based on various strategies such as nanodomain engineering,component and grain size *** excellent energy storage performance(W_(rec)~6.0 J/cm^(3),η~81.0%)was obtained in ***_(3)could enhance the internal disorder,improve the relaxation properties and increase the breakdown field strength of ***-cantly domain relaxor behavior,as evidenced by Vogel-Fulcher(V-F)model,provides strong evidence for restraining early polarization *** addition,Pulse charge/discharge tests have illustrated that the sample has excellent and stable charge/discharge performance(CD~1,068.9 A/cm^(2),PD~96.1 MW/cm^(3),t0.9 z 0.99 ms)It is concluded that there is a huge prospect of NN-BMT-0.15ST ceramics as a kind of pulsed-power-storing electronics.

关键词： NaNbO_(3) Breakdown field strength Lead-free ceramics Energy storage Power density