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From one to crowd： a survey on crowdsourcing-based wireless indoor localization

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Frontiers of Computer Science 2018年第3期12卷 423-450页

作者： Xiaolei ZHOU Tao CHEN Deke GUO xiaoqiang teng Bo YUAN Nanjing Telecommunication Technology Research Institute National University of Defense Technology Nanjing 210089 China Science and Technology on Information Systems Engineering Laboratory National University of Defense Technology Changsha 410073 China

Wireless indoor localization has attracted growing research interest in the mobile computing community for the last decade. Various available indoor signals, including radio frequency, ambient, visual, and motion signals, are extensively exploited for location estimation in indoor environments. The physical measurements of these signals, however, are still limited by both the resolution of devices and the spatial-temporal variability of the signals. One type of noisy signal complemented by another type of signal can benefit the wireless indoor localization in many ways, since these signals are related in their physics and independent in noise. In this article, we survey the new trend of integrating multiple chaotic signals to facilitate the creation of a crowdsourced localization system. Specifically, we first present a three-layer framework for crowdsourcing-based indoor localization by integrating multiple signals, and illustrate the basic methodology for making use of the available signals. Next, we study the mainstream signals involved in indoor localization approaches in terms of their characteristics and typical usages. Furthermore, considering multiple different outputs from different signals, we present significant insights to integrate them together, to achieve localizability in different sce- narios.

关键词： Wireless indoor localization crowdsourcingsystem crowdsensing

Comparing Set Reconciliation Methods Based on Bloom Filters and Their Variants

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Tsinghua Science and Technology 2016年第2期21卷 157-167页

作者： Zhiyao Hu xiaoqiang teng Deke Guo Bangbang Ren Pin Lv Zhong Liu College of Information System and Management National University of Defense TechnologyChangsha 410073China School of Computer Electronics and InformationGuangxi UniversityNanning 530004China.

Set reconciliation between two nodes is widely used in network applications. The basic idea is that each member of a node pair has an object set and seeks to deliver its unique objects to the other member. The Standard Bloom Filter （SBF） and its variants, such as the Invertible Bloom Filter （IBF）, are effective approaches to solving the set reconciliation problem. The SBF-based method requires each node to represent its objects using an SBF, which is exchanged with the other node. A receiving node queries the received SBF against its local objects to identify the unique objects. Finally, each node exchanges its unique objects with the other node in the node pair. For the IBF- based method, each node represents its objects using an IBF, which is then exchanged. A receiving node subtracts the received IBF from its local IBF so as to decode the different objects between the two sets. Intuitively, it would seem that the IBF-based method, with only one round of communication, entails less communication overhead than the SBF-based method, which incurs two rounds of communication. Our research results, however, indicate that neither of these two methods has an absolute advantages over the others. In this paper, we aim to provide an in-depth understanding of the two methods, by evaluating and comparing their communication overhead. We find that the best method depends on parameter settings. We demonstrate that the SBF-based method outperforms the IBF-based method in most cases. But when the number of different objects in the two sets is below a certain threshold, the IBF-based method outperforms the SBF-based method.

关键词： set reconciliation bloom filter communication overheads

Non-coding RNAs in acute ischemic stroke:from brain to periphery

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Neural Regeneration Research 2025年第1期20卷 116-129页

作者： Shuo Li Zhaohan Xu Shiyao Zhang Huiling Sun Xiaodan Qin Lin Zhu teng Jiang Junshan Zhou Fuling Yan Qiwen Deng Department of Neurology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina Department of Neurology Zhongda HospitalSchool of MedicineSoutheast UniversityNanjingJiangsu ProvinceChina General Clinical Research Center Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu ProvinceChina

Acute ischemic stroke is a clinical emergency and a condition with high morbidity,mortality,and *** predictive,diagnostic,and prognostic biomarkers and effective therapeutic targets for acute ischemic stroke remain *** innovations in high-throughput gene sequencing analysis,many aberrantly expressed non-coding RNAs(ncRNAs)in the brain and peripheral blood after acute ischemic stroke have been found in clinical samples and experimental *** expressed ncRNAs in the post-stroke brain were demonstrated to play vital roles in pathological processes,leading to neuroprotection or deterioration,thus ncRNAs can serve as therapeutic targets in acute ischemic ***,distinctly expressed ncRNAs in the peripheral blood can be used as biomarkers for acute ischemic stroke prediction,diagnosis,and *** particular,ncRNAs in peripheral immune cells were recently shown to be involved in the peripheral and brain immune response after acute ischemic *** this review,we consolidate the latest progress of research into the roles of ncRNAs(microRNAs,long ncRNAs,and circular RNAs)in the pathological processes of acute ischemic stroke–induced brain damage,as well as the potential of these ncRNAs to act as biomarkers for acute ischemic stroke prediction,diagnosis,and *** from this review will provide novel ideas for the clinical application of ncRNAs in acute ischemic stroke.

关键词： acute ischemic stroke apoptosis blood–brain barrier damage circular RNAs excitatory toxicity long non-coding RNAs microRNAs neuroinflammation non-coding RNAs oxidative stress

二氯苯醌对斑马鱼胚胎发育及超氧化物歧化酶的影响

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环境科学学报 2020年第7期40卷 2659-2664页

作者：滕晓强陆宏峰郭心月高畅罗钦方张瑜洪华嫦孙洪杰浙江师范大学地理与环境科学学院金华321004

2,6-二氯-1,4-苯醌(2,6-dichloro-1,4-benzoquinone, 2,6-DCBQ)作为一种新型消毒副产物,因其高检出率及高含量的特点而备受人们关注.本研究以斑马鱼胚胎为实验材料探究了2,6-DCBQ的发育毒性.结果发现:斑马鱼胚胎在8~24 hpf(器官发育形... 详细信息

2,6-二氯-1,4-苯醌(2,6-dichloro-1,4-benzoquinone, 2,6-DCBQ)作为一种新型消毒副产物,因其高检出率及高含量的特点而备受人们关注.本研究以斑马鱼胚胎为实验材料探究了2,6-DCBQ的发育毒性.结果发现:斑马鱼胚胎在8~24 hpf(器官发育形成时期)对2,6-DCBQ暴露最为敏感,死亡率最高;2,6-DCBQ安全浓度为27.15μg·L^-1,属于极度危险外源化学物.在本实验中,2,6-DCBQ对斑马鱼的生长没有显著影响,但高浓度(100和150μg·L^-1)2,6-DCBQ会显著增加斑马鱼胚胎及仔鱼的畸形率.在实验过程中还发现,高浓度(≥80μg·L^-1)2,6-DCBQ会明显抑制斑马鱼胚胎的心率.此外,≥30μg·L^-1 2,6-DCBQ可提高超氧化物歧化酶(Superoxide dismutase, SOD)的活性,并影响Cu/ZnSOD和MnSOD的正常转录.本研究较全面地探究了2,6-DCBQ对斑马鱼早期发育阶段的发育毒性,可为2,6-DCBQ的毒性研究提供可靠证据.

关键词：二氯苯醌斑马鱼胚胎发育毒性 SOD活性 SOD转录

High purity Mn5O8 nanoparticles with a high overpotential to gas evolution reactions for high voltage aqueous sodium-ion electrochemical storage

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Frontiers in Energy 2017年第3期11卷 383-400页

作者： xiaoqiang SHAN Fenghua GUO Wenqian XU Xiaowei teng Department of Chemical Engineering University of New Hampshire Durham Nil 03824 USA X-ray Science Division Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA

Developing electrodes with high specific energy by using inexpensive manganese oxides is of great importance for aqueous electrochemical energy storage （EES） using non-Li charge carriers such as Na-or K-ions. However, the energy density of aqueous EES devices is generally limited by their narrow thermody-namic potential window （-1.23 V）. In this paper, the synthesis of high purity layered MnsO8 nanoparticles through solid state thermal treatment of Mn3O4 spinel nanoparticles, resulting in a chemical formula of [Mn^2＋] [Mn）＋O8^2-], evidenced by Rietveld refinement of synchro-tron-based X-ray diffraction, has been reported. The electro-kinetic analyses obtained from cyclic voltammetry measurements in half-cells have demonstrated that MnsOs electrode has a large overpotential （-0.6 V） towards gas evolution reactions, resulting in a stable potential window of 2.5 V in an aqueous electrolyte in half-ceU measurements. Symmetric full-cells fabricated using Mn508 electrodes can be operated within a stable 3.0 V potential window for 5000 galvanostatic cycles, exhibiting a stable electrode capacity of about 103 mAh/g at a C-rate of 95 with nearly 100% coulombic efficiency and 96% energy efficiency.

关键词： manganese oxides Mn5O8 high voltage aqueous Na-ion storage

Trajectory Tracking Control for 4WD vehicles using MPC and Adaptive Fuzzy Control 36

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Trajectory Tracking Control for 4WD vehicles using MPC and A...

第36届中国控制会议

作者： Lu Yang Ming Yue teng Ma xiaoqiang Hou School of Automotive Engineering Dalian University of Technology

ISBN: (纸本)9781538629185

This paper proposes a control scheme considering both vehicle velocity responses and trajectory tracking performance for four wheels drive（4WD） vehicles,subject to the actuator constraints,external disturbance and various physical *** presented hierarchical control architecture consists of the trajectory planning module based on model predictive control（MPC）technique and dynamics control module based on direct adaptive fuzzy control *** upper layer MPC-based planner is utilized to achieve arbitrary reference trajectory tracking for the 4WD vehicle given by earth-fixed frame,as well as meeting various physical ***,direct adaptive fuzzy controller is employed to track desired velocity signals generated by the upper planning module in the lower layer,sequentially the global asymptotical convergence of fuzzy adaptive controller is strictly guaranteed in sense of stability *** results are performed to validate feasibility of the presented control scheme and effectiveness of the developed control approaches.

关键词： 4WD vehicle Trajectory tracking Direct adaptive fuzzy control Model predict control

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尿毒症患者左室结构功能的改变及其影响因素

肾脏病与透析肾移植杂志 2002年第4期11卷 337-341页

作者：方艺丁小强宦金星滕杰邹建洲钟一红傅辰生袁敏沈学东舒先红复旦大学附属中山医院肾内科上海200032

目的 :了解尿毒症患者心脏收缩和舒张功能、形态结构改变 ,探讨贫血、高血压及营养状况与心脏结构功能改变的关系。　方法 :回顾性分析 170名尿毒症患者和 4 0名健康志愿者彩色多普勒超声心动图图象及其同期的血压、血红蛋白和血浆白... 详细信息

目的 :了解尿毒症患者心脏收缩和舒张功能、形态结构改变 ,探讨贫血、高血压及营养状况与心脏结构功能改变的关系。　方法 :回顾性分析 170名尿毒症患者和 4 0名健康志愿者彩色多普勒超声心动图图象及其同期的血压、血红蛋白和血浆白蛋白水平之间的关系。　结果 :170例尿毒症患者超声心动图的分析结果显示 ,分别有 11 8%和 80 %存在左室收缩功能不全和左室舒张功能不全 ,患者左室心肌质量指数 (LVMI)为 (118 7± 32 2 )g/m2 ,室间隔厚度 (IVST)为 (11 6± 2 14 )mm ,左室后壁厚度 (PWTH)为 (11 4± 1 93)mm ,左房内径 (LAd)为 (39 4±6 5 9)mm ,均显著高于健康对照组 (P <0 0 1)。 6 1 8%患者存在左心室肥厚。患者收缩压 (SBP)、舒张压 (DBP)与LVMI、IVST、PWTH、LAd呈显著正相关 ;血浆白蛋白水平与PWTH、LAd呈显著负相关 ,与射血分数、血红蛋白呈显著正相关。　结论 :尿毒症患者左室舒张功能不全和左心室肥厚多见 ,且发生较早。上述心脏结构及功能的改变可能与高血压、营养不良等因素相关。

关键词：尿毒症左室心肌质量指数左室舒张功能贫血高血压

长链非编码RNA通过p38MAPK信号通路直接或间接影响骨质疏松症

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中国组织工程研究 2025年第1期29卷 175-184页

作者：覃浩亢腾刘钢贵州医科大学附属医院临床学院贵州省贵阳市550004 贵州医科大学附属医院骨科贵州省贵阳市550004

背景:近年来大量的研究发现长链非编码RNA参与骨质疏松症的发生和发展。p38MAPK信号通路参与骨髓间充质干细胞、成骨细胞以及破骨细胞的分化等过程而参与骨质疏松症的发展,而长链非编码RNA可通过影响p38MAPK信号通路,直接或间接参与骨... 详细信息

背景:近年来大量的研究发现长链非编码RNA参与骨质疏松症的发生和发展。p38MAPK信号通路参与骨髓间充质干细胞、成骨细胞以及破骨细胞的分化等过程而参与骨质疏松症的发展,而长链非编码RNA可通过影响p38MAPK信号通路,直接或间接参与骨质疏松症的发生及发展过程。目的:综述长链非编码RNA通过p38MAPK信号通路,直接或间接影响骨质疏松症的进展,为长链非编码RNA在骨质疏松症中预防和治疗提供一个新思路。方法:检索PubMed、中国知网和万方数据库的相关文献,以“长链非编码RNA,骨质疏松,间充质干细胞,成骨细胞,破骨细胞,p38信号通路”为中文检索词,以“long non-coding RNA,osteoporosis,mesenchymal stem cells,osteoblasts,osteoclast,p38 signaling pathway”为英文检索词,排除陈旧、重复以及可信度低的观点,将检索到的文献进行归纳、总结和分析,选取76篇具有代表性的文章。结果与结论:(1)长链非编码RNA通过多种途径参与骨质疏松症的防治,包括促进骨髓间充质干细胞的成骨分化、促进成骨细胞分化和成骨细胞分泌活性、抑制破骨细胞增殖和对骨的吸收作用,以及调节成骨相关细胞通路的激活或抑制,激活p38MAPK信号通路延缓骨质疏松症进展,抑制该信号通路抑制破骨细胞的吸收作用,从而影响骨质疏松的发生和发展。(2)相应长链非编码RNA的过表达或低表达会通过p38MAPK信号通路来影响成骨细胞和破骨细胞的增殖或分化,调节骨重塑过程,进而影响骨质疏松症的发生和发展。大量的基础研究结果显示,长链非编码RNA和p38MAPK信号通路或许可以成为骨质疏松症治疗中的潜在应用和临床转化价值;且相应的长链非编码RNA过表达或低表达慢病毒、转染质粒,相应的p38MAPK信号通路抑制剂等在体外细胞实验及动物模型中都被证实有靶向调控作用。(3)因此,通过靶向调控长链非编码RNA和p38MAPK信号通路来调节骨髓间充质干细胞的分化和功能,或通过长链非编码RNA和p38MAPK信号通路来抑制破骨细胞的增殖分化,或许能提供一种创新的治疗策略,可以延缓骨质疏松症的进展。

关键词：骨质疏松长链非编码RNA p38MAPK 间充质干细胞成骨细胞破骨细胞信号通路骨重塑雌激素双膦酸盐

Glass-forming ability and crystallization of Mg-Ni amorphous alloys with Y addition

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Rare Metals 2012年第3期31卷 244-249页

作者： Liu Liyan teng Xinying Wang Yongjie Liu teng Univ Jinan Sch Mat Sci & Engn Jinan 250022 Peoples R China Univ Jinan Sch Phys & Technol Jinan 250022 Peoples R China

Mg86.33Ni13.67-xYx(x=0, 1, 3, 6, 10) amorphous alloys were obtained by single-roller melt-spinning technique and the effect of Y addition on the glass forming ability(GFA), crystallization and micro-hardness of Mg-Ni alloys were studied. The results show that the GFA of Mg86.33Ni13.67-xYx(x=0, 1, 3, 6, 10) is improved successfully with the Y addition. The highest GFA appeares at x=6, while the reduced glass transition temperature (Trg) is 0.5225 and the supercooled liquid region(ΔTx) is 42.06 K; the position of the main diffraction halo is different for the alloys, and the maximum of the main diffraction halo of alloys with x=0, 1, 3 corresponds to the main peaks of a metastable fcc-Mg6Ni or fcc-Mg6Ni + Ni-Y intermetallic phases, and for the alloys with x=6, 10, it corresponds to Mg-Y and Ni-Y intermetallic phases; the micro-hardness of the alloys is improved with Y additions, and the highest micro-hardness is obtained at x=6 at.%, which is 960 MPa.

关键词： Mg-based amorphous alloy glass forming ability crystallization micro-hardness