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New-onset depression after hip fracture surgery among older patients:Effects on associated clinical outcomes and what can we do?

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World Journal of Psychiatry 2021年第11期11卷 1129-1146页

作者： hao-cheng qin Zhi-Wen Luo Heng-Yi Chou Yu-Lian Zhu Department of Rehabilitation Medicine Huashan HospitalFudan UniversityShanghai 200040China Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China Department of Orthopedics Huashan HospitalFudan UniversityShanghai 200040China

BACKGROUND Hip fracture in the elderly is a worldwide medical ***-onset depression after hip fracture has also received attention because of its increasing incidence and negative impact on *** To provide a synthesis of the literature addressing two very important questions arising from postoperative hip fracture depression(PHFD)research:the risk factors and associated clinical outcomes of PHFD,and the optimal options for intervention in *** We searched the PubMed,Web of Science,EMBASE,and PsycINFO databases for English papers published from 2000 to *** Our results showed that PHFD may result in poor clinical outcomes,such as poor physical function and more medical *** addition,the risk factors for PHFD were summarized,which made it possible to assess patients ***,our work preliminarily suggested that comprehensive care may be the optimal treatment option for PHFDs,while interdisciplinary intervention can also be clinically *** We suggest that clinicians should assess risk factors for PHFDs preoperatively,and future research should further validate current treatment methods in more countries and regions and explore more advanced solutions.

关键词： Depression Hip fracture New onset Risk factors Treatments Clinical outcomes

Management of hip fracture in COVID-19 infected patients

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World Journal of Orthopedics 2022年第6期13卷 544-554页

作者： hao-cheng qin Zhong He Zhi-Wen Luo Yu-Lian Zhu Department of Rehabilitation Medicine Huashan HospitalFudan UniversityShanghai 200040China Department of Sports Medicine Huashan HospitalFudan UniversityShanghai 200040China

Given that the global population of elderly individuals is expanding and the difficulty of recovery,hip fractures will be a huge challenge and a critical health issue for all of *** people have spent more time at home during the coronavirus disease 2019(COVID-19)pandemic,hip fractures show no sign of *** studies have shown that patients with hip fracture and COVID-19 have a multifold increase in mortality compared to those uninfected and a more complex clinical *** present,no detailed research has systematically analyzed the relationship between these two conditions and proposed a comprehensive *** article aims to systematically review the impact of COVID-19 on hip fracture and provide practical *** found that hip fracture patients with COVID-19 have higher mortality rates and more complicated clinical ***,COVID-19 prevents hip fracture patients from receiving regular medical *** regard to the problems we encounter,we provide clinical recommendations based on existing research evidence and a clinical flowchart for the management of hip fracture patients who are COVID-19 *** study will help clinicians adequately prepare in advance when dealing with such patients and optimize treatment decisions.

关键词： Hip fracture COVID-19 Management Adverse impact Comorbidity Treatment

Controllable Exciton Diffusion Length and Ultrafast Charge Generation in Ternary Organic Solar Cells

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Chinese Journal of Chemistry 2024年第11期42卷 1275-1283页

作者： Sixuan cheng Jiawei Qiao Peng Lu Wei qin Xiaotao hao School of Physics State Key Laboratory of Crystal MaterialsShandong UniversityJinanShandong250100 China School of Physics National Demonstration Center for Experimental Physics EducationShandong UniversityJinanShandong250100 China ARC Centre of Excellence in Exciton Science School of ChemistryThe University of MelbourneParkvilleVictoria3010 Australia

Charge generation,a critical process in the operation of organic solar cell(OSC),requires thorough investigation in an ultrafast *** work demonstrates that the utilization of alloy model for the non-fullerene acceptor(NFA)component can regulate the crystallization properties of active layer films,which in turn affects exciton diffusion and hole transfer(HT),ultimately influencing the charge generation *** incorporating BTP-eC7 as a third component,without expanding absorption range or changing molecular energy levels but regulating the ultrafast exciton diffusion and HT processes,the power conversion efficiency(PCE)of the optimized PM6:BTP-eC9:BTP-eC7 based ternary OSC is improved from 17.30%to 17.83%,primarily due to the enhancement of short-circuit current density(JSC).Additionally,the introduction of BTP-eC7 also reduces the trap state density in the photoactive layer which helps to reduce the loss of *** study introduces a novel approach for employing ternary alloy models by incorporating dual acceptors with similar structures,and elucidates the underlying mechanism of charge generation and JSC in ternary OSCs.

关键词： Organic photovoltaics Ternary strategy Exciton diffusion Hole transfer Trap state Kinetics Alloys Photophysics

A Novel Divide and Conquer Solution for Long-term Video Salient Object Detection

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Machine Intelligence Research 2024年第4期21卷 684-703页

作者： Yun-Xiao Li cheng-Li-Zhao Chen Shuai Li Ai-Min hao Hong qin State Key Laboratory of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191China College of Computer Science and Technology China University of Petroleum(East China)Qingdao 266580China Department of Computer Science Stony Brook UniversityNew York 11794USA

Recently,a new research trend in our video salient object detection(VSOD)research community has focused on enhancing the detection results via model self-fine-tuning using sparsely mined high-quality keyframes from the given *** such a learning scheme is generally effective,it has a critical limitation,i.e.,the model learned on sparse frames only possesses weak generalization *** situation could become worse on“long”videos since they tend to have intensive scene ***,in such videos,the keyframe information from a longer time span is less relevant to the previous,which could also cause learning conflict and deteriorate the model ***,the learning scheme is usually incapable of handling complex pattern *** solve this problem,we propose a divide-and-conquer framework,which can convert a complex problem domain into multiple simple ***,we devise a novel background consistency analysis(BCA)which effectively divides the mined frames into disjoint *** for each group,we assign an individual deep model on it to capture its key attribute during the fine-tuning *** the testing phase,we design a model-matching strategy,which could dynamically select the best-matched model from those fine-tuned ones to handle the given testing *** experiments show that our method can adapt severe background appearance variation coupling with object movement and obtain robust saliency detection compared with the previous scheme and the state-of-the-art methods.

关键词： Video salient object detection background consistency analysis weakly supervised learning long-term information background shift.

Resource Allocation in Multi-User Cellular Networks:A Transformer-Based Deep Reinforcement Learning Approach

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China Communications 2024年第5期21卷 77-96页

作者： Zhao Di Zheng Zhong qin Pengfei qin hao Song Bin State Key Laboratory of Integrated Services Networks Xidian University710071China China Academy of Space Technology Beijing 100081China

To meet the communication services with diverse requirements,dynamic resource allocation has shown increasing *** this paper,we consider the multi-slot and multi-user resource allocation(MSMU-RA)in a downlink cellular scenario with the aim of maximizing system spectral efficiency while guaranteeing user *** first model the MSMURA problem as a dual-sequence decision-making process,and then solve it by a novel Transformerbased deep reinforcement learning(TDRL)***,the proposed TDRL approach can be achieved based on two aspects:1)To adapt to the dynamic wireless environment,the proximal policy optimization(PPO)algorithm is used to optimize the multi-slot RA strategy.2)To avoid co-channel interference,the Transformer-based PPO algorithm is presented to obtain the optimal multi-user RA scheme by exploring the mapping between user sequence and resource *** results show that:i)the proposed approach outperforms both the traditional and DRL methods in spectral efficiency and user fairness,ii)the proposed algorithm is superior to DRL approaches in terms of convergence speed and generalization performance.

关键词： dynamic resource allocation multi-user cellular network spectrum efficiency user fairness

Mendelian randomization analysis of causal relationship between cheese intake and diabetic retinopathy

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International Journal of Ophthalmology(English edition) 2024年第10期17卷 1905-1910页

作者： cheng-Ye Tang Dong-Yong Tang Ying-qin Yang Yu-Bing Liang hao Liang Department of Ophthalmology the First Affiliated Hospital of Guangxi Medical UniversityNanning 530000Guangxi Zhuang Autonomous RegionChina Department of Ophthalmology the Affiliated Hospital of Guilin Medical UniversityGuilin 541001Guangxi Zhuang Autonomous RegionChina Department of Anesthesiology Guangxi Medical University Cancer HospitalNanning 530000Guangxi Zhuang Autonomous RegionChina

AIM:To assess whether there is a possible causal link between the intake of cheese and the risk of diabetic retinopathy(DR)utilizing a two-sample Mendelian randomization(MR)***:The research data were obtained from summary statistics of genome-wide association studies(GWAS).Genetic loci closely related to cheese intake were extracted as instrumental variables(IVs),and DR was the outcome *** data were extracted from individuals of European *** data of cheese intake consisted of 451486 samples with 9851867 single nucleotide polymorphisms(SNPs),while the DR data consisted of 206234 samples with 16380446 ***-one genetic loci closely related to cheese intake were selected as *** analysis was performed by inverse-variance weighted(IVW)method and MR-Egger regression *** causal relationship between cheese intake and DR was evaluated using odds ratios(ORs)and 95%confidence intervals(CIs).Egger-intercept test was used to test horizontal pleiotropy and sensitivity analysis was performed by leave-one-out ***:The P value of the IVW method was less than 0.05,indicating a significant negative correlation between cheese intake and ***-Egger regression showed that the intercept was 0.01 with a standard error of 0.022,and a P-value of 0.634,indicating no evidence of horizontal pleiotropy affecting the IVs related to the exposure ***,heterogeneity tests confirmed the absence of heterogeneity,and the“leave-one-out”sensitivity analysis demonstrated that the results were ***:Cheese intake is causally negatively correlated with the occurrence of DR,and cheese intake could reduce the risk of DR.

关键词： cheese intake diabetic retinopathy Mendelian randomization analysis

Dynamic ocean inverse modeling based on differentiable rendering

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Computational Visual Media 2024年第2期10卷 279-294页

作者： Xueguang Xie Yang Gao Fei Hou Aimin hao Hong qin State Key Lab of Virtual Reality Technology and Systems Beihang UniversityBeijing 100191China qingdao Research Institute Beihang UniversityQingdao 266100Chinaand Peng Cheng LabShenzhen 518000China SKLCS Institute of SoftwareChinese Academy of SciencesBeijing 100190Chinaand University of Chinese Academy of SciencesBeijing 100049China Department of Computer Science Stony Brook University(SUNY at Stony Brook)Stony BrookNew York 11794-2424USA

Learning and inferring underlying motion patterns of captured 2D scenes and then re-creating dynamic evolution consistent with the real-world natural phenomena have high appeal for graphics and *** bridge the technical gap between virtual and real environments,we focus on the inverse modeling and reconstruction of visually consistent and property-verifiable oceans,taking advantage of deep learning and differentiable physics to learn geometry and constitute waves in a self-supervised ***,we infer hierarchical geometry using two networks,which are optimized via the differentiable *** extract wave components from the sequence of inferred geometry through a network equipped with a differentiable ocean ***,ocean dynamics can be evolved using the reconstructed wave *** extensive experiments,we verify that our new method yields satisfactory results for both geometry reconstruction and wave ***,the new framework has the inverse modeling potential to facilitate a host of graphics applications,such as the rapid production of physically accurate scene animation and editing guided by real ocean scenes.

关键词： inverse modeling surface reconstruction wave modeling ocean waves differentiable rendering(DR)

Microstructure and mechanical properties of Ti/Al/Ti clad plates prepared via powder-in-tube method

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Journal of Iron and Steel Research International 2024年第3期31卷 670-687页

作者： Xian-lei Hu qin-cheng Xie Yi Yuan Ying Zhi State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819LiaoningChina Suzhou Dongbao Haixing Metal Material Technology Co. Ltd.Suzhou 215600JiangsuChina School of Material Science and Engineering Northeastern UniversityShenyang 110819LiaoningChina

The Ti/Al/Ti clad plates exhibit a broad spectrum of potential ***,the conventional techniques of hot-pressing composite and explosive composite are intricate and environmentally hazardous.A novel method was introduced for preparing clad plates,namely,the powder-in-tube *** method involves a combination of cold rolling,annealing at a temperature of 550℃,and double *** morphology of the intermetallic compound layer was analyzed through the utilization of interface stripping test,tensile test,and microscopic *** interface morphology,interface bonding properties,tensile fracture structures,and properties of plates under the first and second rolling were compared,along with the effects of intermetallic compounds on the interface *** results indicate that the powder-in-tube method,when annealed at 550℃,can produce a composite plate featuring a complete and uniform Ti/Al *** obtained plate exhibits a peeling strength of 21.5 N/mm,tensile strength of 424 MPa,and elongation of 11.5%.Furthermore,a systematic analysis was conducted to determine the causes of performance degra-dation observed during annealing at temperatures of 600 and 650℃.

关键词： Powder-in-tube method-Ti/Al/Ti clad plate Annealing Cold rolling-Mechanical property

A Recursive DRL-Based Resource Allocation Method for Multibeam Satellite Communication Systems

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Chinese Journal of Electronics 2024年第5期33卷 1286-1295页

作者： haowei MENG Ning XIN hao qin Di Zhao State Key Laboratory of Integrated Services Networks Xidian University China Academy of Space Technology Institute of Telecommunication Satellite

Optimization-based radio resource management(RRM) has shown significant performance gains on high-throughput satellites(HTSs). However, as the number of allocable on-board resources increases, traditional RRM is difficult to apply in real satellite systems due to its intense computational complexity. Deep reinforcement learning(DRL) is a promising solution for the resource allocation problem due to its model-free advantages. Nevertheless, the action space faced by DRL increases exponentially with the increase of communication scale, which leads to an excessive exploration cost of the algorithm. In this paper, we propose a recursive frequency resource allocation algorithm based on long-short term memory(LSTM) and proximal policy optimization(PPO), called PPO-RA-LOOP,where RA means resource allocation and LOOP means the algorithm outputs actions in a recursive manner. Specifically, the PPO algorithm uses LSTM network to recursively generate sub-actions about frequency resource allocation for each beam, which significantly cuts down the action space. In addition, the LSTM-based recursive architecture allows PPO to better allocate the next frequency resource by using the generated sub-actions information as a prior knowledge, which reduces the complexity of the neural network. The simulation results show that PPO-RA-LOOP achieved higher spectral efficiency and system satisfaction compared with other frequency allocation algorithms.

关键词： High-throughput satellites Proximal policy optimization Deep reinforcement learning Long-short term memory High-throughput satellites Proximal policy optimization Deep reinforcement learning Long-short term memory OPTIMIZATION POWER