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Time and energy efficient data collection via UAV

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Science China(Information Sciences) 2022年第8期65卷 182-196页

作者： Tianhao WANG xiaowei pang Jie TANG Nan ZHAO Xiuyin ZHANG Xianbin WANG School of Information and Communication Engineering Dalian University of Technology Department of Electrical and Computer Engineering Western University School of Electronic and Information Engineering South China University of Technology

Using unmanned aerial vehicles(UAVs) for data collection has emerged as a promising technique to achieve both time-and energy-efficient data gathering while keeping data fresh. In this study, two schemes are proposed for flight cycle minimization and energy efficiency maximization to collect data from ground sensors. We first minimize the flight cycle by jointly optimizing the wake-up scheduling of sensors, the trajectory,and the time slot, which is a mixed-integer non-convex problem and difficult to solve directly. To this end,we propose an iterative algorithm based on block coordinate descent and successive convex approximation to decouple the original non-convex problem into two sub-problems and the constraints are turned to be convex approximately. Furthermore, the energy efficiency is maximized since the limited energy is a critical issue in UAV communication systems. We approximate the two subproblems as convex optimizations by introducing slack variables and applying SCA. The approximate energy efficiency is a fractional expression, and we use Dinkelbach’s method to solve it. Numerical results show that the flight cycle is minimized in the first scheme with the data requirement satisfied, while in the second scheme, the energy efficiency is maximized with the trade-off between the transmission data and the propulsion power consumption.

关键词： data collection energy efficiency maximization time minimization trajectory optimization unmanned aerial vehicle (UAV)

Transmit Power Minimization for IRS-Assisted NOMA-UAV Networks

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China Communications 2024年第5期21卷 137-152页

作者： Zhao Chen pang xiaowei Tang Jie Liu Mingqian Zhao Nan Zhang Xiuyin Wang Xianbin School of Information and Communication Engineering Dalian University of TechnologyDalian 116024China School of Electronic and Information Engineering South China University of TechnologyGuangzhou 510641China State Key Laboratory of Integrated Services Networks Xidian UniversityXi’an 710071China Department of Electrical and Computer Engineering Western UniversityLondonON N6A 5B9Canada

The flexibility of unmanned aerial vehicles(UAVs)allows them to be quickly deployed to support ground *** reflecting surface(IRS)can reflect the incident signal and form passive beamforming to enhance the signal in the specific *** by the promising benefits of both technologies,we consider a new scenario in this paper where a UAV uses non-orthogonal multiple access to serve multiple users with *** to their distance to the UAV,the users are divided into the close users and remote *** UAV hovers above the close users due to their higher rate requirement,while the IRS is deployed near the remote users to enhance their received *** aim at minimizing the transmit power of UAV by jointly optimizing the beamforming of UAV and the phase shift of IRS while ensuring the decoding ***,the problem is ***,we decompose it into two sub-problems,including the transmit beamforming optimization and phase shift optimization,which are transformed into second-order cone programming and semidefinite programming,*** propose an iterative algorithm to solve the two sub-problems *** results prove the effectiveness of the proposed scheme in minimizing the transmit power of UAV.

关键词： intelligent reflecting surface nonorthogonal multiple access phase shift optimization transmit beamforming optimization unmanned aerial vehicle

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面向6G多维扩展的新型多址接入技术综述

电子与信息学报 2024年第6期46卷 2323-2334页

作者：逄小玮蒋旭卢华兵赵楠大连理工大学信息与通信工程学院大连116024 哈尔滨工业大学(威海)信息科学与工程学院威海264209

随着移动通信技术的不断演进,第6代移动通信(6G)将实现从万物互联到万物智联的跨越,满足更高的数据需求和更广泛的应用场景。新型多址接入技术和多维扩展技术将在6G中协同发挥作用,为构建高效、智能、可靠的通信网络提供关键支持,满足... 详细信息

随着移动通信技术的不断演进,第6代移动通信(6G)将实现从万物互联到万物智联的跨越,满足更高的数据需求和更广泛的应用场景。新型多址接入技术和多维扩展技术将在6G中协同发挥作用,为构建高效、智能、可靠的通信网络提供关键支持,满足未来通信的多重需求。该文旨在探讨新型多址接入技术在6G多维扩展通信网络中的应用潜力。首先,该文对比了传统多址接入技术与6G潜在新型多址接入技术,并重点阐述了非正交多址接入技术在提升频谱效率和系统容量方面的优势。然后,详细介绍了卫星通信、无人机(UAV)通信和智能反射面(IRS)等多维扩展技术在6G场景下的优势。进一步,讨论了新型多址技术与卫星通信、UAV以及IRS相结合的优势及协同应用。最后,探讨了基于新型多址接入技术的多维扩展网络中的关键技术挑战,包括大规模多入多出技术、太赫兹技术、通感算一体化、用户信息安全、不完美信道状态信息(CSI)估计,同时对新型编码技术、人工智能和机器学习等研究方向进行了展望。

关键词： 6G移动通信多维扩展新型多址接入技术卫星通信无人机智能反射面

Dawn of CAR-T cell therapy in autoimmune diseases

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Chinese Medical Journal 2024年第10期137卷 1140-1150页

作者： Yuxin Liu Minghao Dong Yunhui Chu Luoqi Zhou Yunfan You xiaowei pang Sheng Yang Luyang Zhang Lian Chen Lifang Zhu Jun Xiao Wei Wang Chuan Qin Daishi Tian Department of Neurology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanHubei 430030China Hubei Key Laboratory of Neural Injury and Functional Reconstruction Huazhong University of Science and TechnologyWuhanHubei 430030China

Chimeric antigen receptor(CAR)-T cell therapy has achieved remarkable success in the treatment of hematological *** on the immunomodulatory capability of CAR-T cells,efforts have turned toward exploring their potential in treating autoimmune *** analysis of 210 records from 128 academic journals published by 372 institutions in 40 countries/regions indicates a growing number of publications on CAR-T therapy for autoimmune diseases,covering a range of subtypes such as systemic lupus erythematosus,multiple sclerosis,among ***-T therapy holds promise in mitigating several shortcomings,including the indiscriminate suppression of the immune system by traditional immunosuppressants,and non-sustaining therapeutic levels of monoclonal antibodies due to inherent pharmacokinetic *** persisting and proliferating in vivo,CAR-T cells can offer a tailored and precise *** paper reviewed preclinical experiments and clinical trials involving CAR-T and CAR-related therapies in various autoimmune diseases,incorporating innovations well-studied in the field of hematological tumors,aiming to explore a safe and effective therapeutic option for relapsed/refractory autoimmune diseases.

关键词： CAR-T cell therapy Autoimmune disease Immunotherapy Multiple sclerosis Neuromyelitis optica spectrum disorder Systemic lupus erythematosus

Microglia:a promising therapeutic target in spinal cord injury

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Neural Regeneration Research 2025年第2期20卷 454-463页

作者： xiaowei Zha Guoli Zheng Thomas Skutella Karl Kiening Andreas Unterberg Alexander Younsi Department of Neurosurgery Heidelberg University HospitalHeidelbergGermany Department of Neuroanatomy Institute for Anatomy and Cell BiologyHeidelberg UniversityHeidelbergGermany

Microglia are present throughout the central nervous system and are vital in neural repair,nutrition,phagocytosis,immunological regulation,and maintaining neuronal *** a healthy spinal cord,microglia are accountable for immune surveillance,however,when a spinal cord injury occurs,the microenvironment drastically changes,leading to glial scars and failed axonal *** this context,microglia vary their gene and protein expression during activation,and proliferation in reaction to the injury,influencing injury responses both favorably and unfavorably.A dynamic and multifaceted injury response is mediated by microglia,which interact directly with neurons,astrocytes,oligodendrocytes,and neural stem/progenitor *** a clear understanding of their essential nature and origin,the mechanisms of action and new functions of microglia in spinal cord injury require extensive *** review summarizes current studies on microglial genesis,physiological function,and pathological state,highlights their crucial roles in spinal cord injury,and proposes microglia as a therapeutic target.

关键词： astrocytes cytokines functional recovery immune regulation M1/M2 activation macrophages microglia neuroinflammation spinal cord injury therapy

Defect Engineering:Can it Mitigate Strong Coulomb Effect of Mg^(2+)in Cathode Materials for Rechargeable Magnesium Batteries?

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Nano-Micro Letters 2025年第1期17卷 135-159页

作者： Zhengqing Fan Ruimin Li Xin Zhang Wanyu Zhao Zhenghui Pan xiaowei Yang School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China School of Chemistry and Chemical Engineering Taiyuan University of TechnologyTaiyuan 030024People’s Republic of China School of Materials Science and Engineering Tongji UniversityShanghai 201804People’s Republic of China

Rechargeable magnesium batteries(RMBs)have been considered a promising“post lithium-ion battery”system to meet the rapidly increasing demand of the emerging electric vehicle and grid energy storage ***,the sluggish diffusion kinetics of bivalent Mg^(2+)in the host material,related to the strong Coulomb effect between Mg^(2+)and host anion lattices,hinders their further development toward practical *** engineering,regarded as an effective strategy to break through the slow migration puzzle,has been validated in various cathode materials for *** this review,we first thoroughly understand the intrinsic mechanism of Mg^(2+)diffusion in cathode materials,from which the key factors affecting ion diffusion are further ***,the positive effects of purposely introduced defects,including vacancy and doping,and the corresponding strategies for introducing various defects are *** applications of defect engineering in cathode materials for RMBs with advanced electrochemical properties are also ***,the existing challenges and future perspectives of defect engineering in cathode materials for the overall high-performance RMBs are described.

关键词： Rechargeable magnesium battery Sluggish diffusion kinetic Defect engineering Cathode materials Ion migration

In situ polymerization of poly(3,4-ethylenedioxythiophene)protective layer towards stable zinc anode

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Nano Research 2025年第1期18卷 382-394页

作者： Debin Luo Peng Zhou xiaowei Lv Panpan Sun Xiaohua Sun Hewei Zhao College of Materials and Chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion MaterialsChina Three Gorges UniversityYichang 443002China Hubei Three Gorges Laboratory Yichang 443007China School of Chemistry Beihang UniversityBeijing 100191China

Aqueous zinc-ion devices are considered promising candidates for energy storage due to their high safety,low cost and relatively high energy ***,the dendrite growth,hydrogen evolution reaction(HER)and corrosion of the zinc anode significantly limit the development of Zn-ion ***,an inexpensive poly(3,4-ethylenedioxythiophene)(PEDOT)protective layer was constructed in situ on the Zn surface using electropolymerization to suppress dendrite growth and side reactions,thereby enhancing the reversibility of *** and theoretical calculations revealed that this hydrophilic protective layer promotes the desolvation process of hydrated Zn^(2+)and facilitates the transport of zinc ions,thus improving the thermodynamic and kinetic properties of Zn^(2+)deposition and inhibiting interfacial side ***,the optimized PEDOT@Zn symmetric battery exhibited a cycling stability exceeding 1250 h at 0.5 mA·cm^(-2)and 0.25 mAh·cm^(-2),with a significantly reduced overpotential(from 91.8 to 35 mV).With the assistance of the PEDOT protective layer,the PEDOT@Zn//Cu battery maintained approximately 99.5%Coulombic efficiency after 450 ***-situ scanning electron microscopy(SEM)and in situ optical microscopy characterizations further confirmed that the PEDOT protective layer can effectively suppress the growth of zinc ***,the Zn-ion capacitors assembled by the PEDOT@Zn and activated carbon also demonstrated outstanding cycling stability.

关键词： zinc-ion devices zinc anode poly(3 4-ethylenedioxythiophene)(PEDOT) dendrite desolvation process

PI3K/AKT signaling and neuroprotection in ischemic stroke:molecular mechanisms and therapeutic perspectives

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Neural Regeneration Research 2025年第10期20卷 2758-2775页

作者： Tianlong Liu Xiaolin Li xiaowei Zhou Wei Chen Aidong Wen Minna Liu Yi Ding Department of Pharmacy Xijing HospitalFourth Military Medical UniversityXi’anShaanxi ProvinceChina Department of Pharmacy The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina Department of Pharmacy The 944 Hospital of Joint Logistics Support Forces of Chinese PLAJiuquanGansu ProvinceChina Department of Nephrology The 940 Hospital of Joint Logistics Support Forces of Chinese PLALanzhouGansu ProvinceChina

It has been reported that the PI3K/AKT signaling pathway plays a key role in the pathogenesis of ischemic *** a result,the development of drugs targeting the PI3K/AKT signaling pathway has attracted increasing attention from *** article reviews the pathological mechanisms and advancements in research related to the signaling pathways in ischemic stroke,with a focus on the PI3K/AKT signaling *** key findings include the following:(1)The complex pathological mechanisms of ischemic stroke can be categorized into five major types:excitatory amino acid toxicity,Ca^(2+)overload,inflammatory response,oxidative stress,and apoptosis.(2)The PI3K/AKT-mediated signaling pathway is closely associated with the occurrence and progression of ischemic stroke,which primarily involves the NF-κB,NRF2,BCL-2,mTOR,and endothelial NOS signaling pathways.(3)Natural products,including flavonoids,quinones,alkaloids,phenylpropanoids,phenols,terpenoids,and iridoids,show great potential as candidate substances for the development of innovative anti-stroke medications.(4)Recently,novel therapeutic techniques,such as electroacupuncture and mesenchymal stem cell therapy,have demonstrated the potential to improve stroke outcomes by activating the PI3K/AKT signaling pathway,providing new possibilities for the treatment and rehabilitation of patients with ischemic *** investigations should focus on the direct regulatory mechanisms of drugs targeting the PI3K/AKT signaling pathway and their clinical translation to develop innovative treatment strategies for ischemic stroke.

关键词： apoptosis autophagy inflammation ischemic stroke neuroprotection oxidative stress pathogenesis phosphatidylinositol 3-kinase protein kinase B therapeutics

输液加温器预防输注七叶皂甙钠致静脉炎的效果

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解放军护理杂志 2015年第2期32卷 69-70页

作者：方红霞许延萍庞小伟兰州军区兰州总医院关节微创外科甘肃兰州730050

目的探讨应用输液加温器对预防输注七叶皂甙钠所致静脉炎的效果。方法便利抽样法选择2012年6月至2013年6月,在兰州总医院关节微创外科需输注七叶皂甙钠的患者200例为研究对象,按责任包干制护理小组分为对照组和观察组,每组100例。对照... 详细信息

目的探讨应用输液加温器对预防输注七叶皂甙钠所致静脉炎的效果。方法便利抽样法选择2012年6月至2013年6月,在兰州总医院关节微创外科需输注七叶皂甙钠的患者200例为研究对象,按责任包干制护理小组分为对照组和观察组,每组100例。对照组患者给予常规输注;观察组患者在输注中应用输液加温器将管道加温至38℃,观察两组患者穿刺部位疼痛情况及静脉炎发生率。结果对照组患者疼痛发生率及静脉炎发生率均高于观察组,差异均有统计学意义(均P<0.05)。结论在输注七叶皂甙钠过程中应用输液加温器加温可有效缓解穿刺部位疼痛情况并降低静脉炎的发生率。

关键词：输液加温器七叶皂甙钠静脉炎疼痛

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