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面向DVS振动信号识别率提升的特征选择算法研究

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红外与激光工程 2024年第8期53卷 228-238页

作者：马喆李玮哲张建忠李健王婷玉和祥杨滨远张明江太原理工大学物理与光电工程学院山西太原030024 太原理工大学新型传感器与智能控制教育部重点实验室山西太原030024

分布式光纤振动传感(Distributed Optic-fiber Vibration Sensing, DVS)系统可对振动信号实现分布式测量,在实际应用中通常采用模式识别算法对各种振动事件进行识别,然而目前模式识别特征大都固定冗余,不能充分展现振动信号的特性,导致... 详细信息

分布式光纤振动传感(Distributed Optic-fiber Vibration Sensing, DVS)系统可对振动信号实现分布式测量,在实际应用中通常采用模式识别算法对各种振动事件进行识别,然而目前模式识别特征大都固定冗余,不能充分展现振动信号的特性,导致误报率高的问题。针对上述问题,搭建了一套直接探测结构的DVS系统样机,并提出了基于模拟退火算法和Fisher Score算法相结合的混合式特征选择方法。首先使用Fisher Score算法选取合适的特征初始集合,再将Fisher Score嵌入模拟退火算法的新解产生环节中,实现对入侵振动信号的特征组合整体效果较好的选择。通过实验对算法性能进行验证,结果表明:该算法可以剔除冗余入侵振动信号特征,拥有较快的收敛速度,使系统的识别率由80.23%提升至94.46%。

关键词：分布式光纤振动传感特征提取模拟退火算法 Fisher Score算法

权力的解构与强化:ChatGPT重建知识生产秩序

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数字出版研究 2024年第1期3卷 43-50页

作者：王婷瑜张新俏杜智涛中国社会科学院大学新闻传播学院北京102488 中国社会科学院大学新媒体研究中心北京102401

以ChatGPT为代表的生成式AI自诞生以来便挑战着传统的知识生产秩序,引发了对智能传播时代知识生产秩序与边界的现实诘问和其背后知识权力的省思。在此基础上,有必要进一步澄清生成式AI面向数据、算法的知识生产逻辑。作为参与社会建构... 详细信息

以ChatGPT为代表的生成式AI自诞生以来便挑战着传统的知识生产秩序,引发了对智能传播时代知识生产秩序与边界的现实诘问和其背后知识权力的省思。在此基础上,有必要进一步澄清生成式AI面向数据、算法的知识生产逻辑。作为参与社会建构的知识生产代理,ChatGPT通过去中心化的知识供给,打破了“知识资本”的垄断趋势,间接推动了知识权力的多元与平衡。同时,ChatGPT的价值对齐可能受到隐匿价值观和现有权力结构的影响,从而进一步强化技术平台的生产性权力。此外,基于大数据语言模型所生产的普遍知识使地方性知识面临危机,增加知识泛化和泡沫化的风险。个人和社会在面对这场知识变革中应采取积极的应对策略,利用ChatGPT实现知识生产的新突破。

关键词： ChatGPT 知识权力知识生产人工智能知识革命

Experimental study on the mitigation effect of mangroves during tsunami wave propagation

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Acta Oceanologica Sinica 2023年第7期42卷 124-137页

作者： Cheng Chen Chen Peng Hui Yan Minjian Wei tingyu wang College of Civil Engineering Fuzhou UniversityFuzhou 350108China

Mangroves are crucial for protecting coastal areas against extreme disasters such as tsunamis and storm *** experimental study was conducted to determine how mangroves can mitigate the tsunami wave *** test was performed in a flume, where mangrove models were installed on a slope, and dam-burst waves were used to simulate tsunami waves. To study how mangrove forests reduce the impact of tsunamis, this paper measured the heights of the incoming waves under different initial conditions(tsunami wave intensity and initial water depth) and plant factors(arrangement and distribution density) and described the reduction process. The results show that, after passing through the mangrove, the tsunami bore height will decrease within a certain range as the initial water depth increases. However, there is no correlation between the increase of inundation level and the drop of water level. The bore height attenuation is more significant at higher density of mangroves,but after tsunami passing through the mangroves, the relative bore height will decrease. When the distribution density of mangroves is constant, the wave attenuation at different locations(before, on and after the slope)shows different relationships with the initial water depth and wave height for different models. The transmission coefficient(K_(i)) shows a parabolic correlation with its density. The proportion of the energy loss caused by the mangrove resistance to the total energy(E_(b)) is defined as C_(m2). The variation trend of C_(m2) corresponds to the tsunami wave energy attenuation rate(C_(a)) and K_(i).

关键词： mangroves tsunami wave distribution density arrangement transmission coefficient

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肥大细胞活性介质对黑色素代谢的影响

中国皮肤性病学杂志 2024年第8期38卷 929-933页

作者：吴盼赵薇张鑫王婷妤姚秋艳华丕砚顾华昆明医科大学第一附属医院皮肤科云南昆明650000

肥大细胞来源于骨髓造血干细胞,参与机体变态反应、损伤修复与重塑、血栓形成以及免疫防御等生理病理过程。近年来研究表明,黄褐斑患者皮损区肥大细胞数量增加,氨甲环酸治疗黄褐斑的机制与肥大细胞活性及数量有关,提示肥大细胞可能参与... 详细信息

肥大细胞来源于骨髓造血干细胞,参与机体变态反应、损伤修复与重塑、血栓形成以及免疫防御等生理病理过程。近年来研究表明,黄褐斑患者皮损区肥大细胞数量增加,氨甲环酸治疗黄褐斑的机制与肥大细胞活性及数量有关,提示肥大细胞可能参与调节皮肤色素沉着。本文就肥大细胞活化后释放的活性介质对黑色素合成、转运的影响进行综述。

关键词：肥大细胞黑素细胞生物胺蛋白酶类花生酸细胞因子

Miniaturized retractable thin-film sensor for wearable multifunctional respiratory monitoring

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Nano Research 2023年第9期16卷 11846-11854页

作者： Chengyu Li Zijie Xu Shuxing Xu tingyu wang Siyu Zhou Zhuoran Sun Zhong Lin wang Wei Tang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesBeijing 101400China School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100049China Center on Nanoenergy Research School of Physical Science and TechnologyGuangxi UniversityNanning 530004China Peking University Third Hospital Beijing 100191China Georgia Institute of Technology AtlantaGA 30332USA

As extremely important physiological indicators,respiratory signals can often reflect or predict the depth and urgency of various ***,designing a wearable respiratory monitoring system with convenience,excellent durability,and high precision is still an urgent ***,we designed an easy-fabricate,lightweight,and badge reel-like retractable selfpowered sensor(RSPS)with high precision,sensitivity,and durability for continuous detection of important indicators such as respiratory rate,apnea,and respiratory *** using three groups of interdigital electrode structures with phase differences,combined with flexible printed circuit boards(FPCBs)processing technology,a miniature rotating thin-film triboelectric nanogenerator(RTF-TENG)was *** on discrete sensing technology,the RSPS has a sensing resolution of 0.13 mm,sensitivity of 7 P·mm^(−1),and durability more than 1 million stretching cycles,with low hysteresis and excellent anti-environmental interference ***,to demonstrate its wearability,real-time,and convenience of respiratory monitoring,a multifunctional wearable respiratory monitoring system(MWRMS)was *** MWRMS demonstrated in this study is expected to provide a new and practical strategy and technology for daily human respiratory monitoring and clinical diagnosis.

关键词： respiratory monitoring thin-film sensors discrete and vector self-powered triboelectric nanogenerator

2D/2D Bi_(2)MoO_(6)/g-C_(3)N_(4) S-scheme heterojunction photocatalyst with enhanced visible-light activity by Au loading

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Journal of Materials Science & Technology 2020年第21期56卷 216-226页

作者： Qiaoqiao Li Wenli Zhao Zicheng Zhai Kaixu Ren tingyu wang Hao Guan Haifeng Shi School of Science Jiangnan UniversityWuxi214122China Jiangsu Provincial Research Center of Light Industrial Optoelectronic Engineering and Technology Jiangnan UniversityWuxi214122China

A novel 2D/2D Bi_(2)MoO_(6)/g-C_(3)N_(4) step-scheme(S-scheme)composite by loading Au as cocatalyst was successfully fabricated using a photoreduction and hydrothermal *** obtained Bi_(2)MoO_(6)/g-C_(3)N_(4)/Au photocatalysts were characterized by X-ray diffraction(XRD),transmission electron microscope(TEM),X-ray photo-electron spectroscopy(XPS),UV–vis diffuse reflectance spectra(UV–vis),Fourier transform infrared spectroscopy(FTIR),photoluminescence(PL),photocurrent response(I-t),and electrochemical impedance spectroscopy(EIS).The HRTEM images revealed that an intimate interface in composites were *** optimum photocatalytic activity of Rhodamine B degradation over Bi_(2)MoO_(6)/g-C_(3)N_(4)/Au was about 9.7 times and 13.1 times as high as those of Bi_(2)MoO_(6) and g-C_(3)N_(4),*** notably improved photocatalytic activity of Bi_(2)MoO_(6)/g-C_(3)N_(4)/Au could be mainly ascribed to the abundant active sites and the enhanced separation efficiency of photogenerated carriers in Bi_(2)MoO_(6)/g-C_(3)N_(4) S-scheme ***,Au nanoparticles could act as a co-catalyst to further promote electron transfer and separation from the conduction band of g-C_(3)N_(4).Additionally,a possible step-scheme photocatalytic reaction mechanism of Rh B degradation over Bi_(2)MoO_(6)/g-C_(3)N_(4)/Au was tentatively *** and transient photocurrent analysis implied that Bi_(2)MoO_(6)/g-C_(3)N_(4)/Au photocatalysts possessed the lower recombination rate of photogenerated carriers compared with pure Bi_(2) MoO_(6) and g-C_(3)N_(4),*** present work is expected to provide useful information in designing 2D/2D S-scheme heterojunction photocatalysts.

关键词： g-C_(3)N_(4) Bi_(2)MoO_(6) 2D/2D S-scheme Au loading

Extraction optimization of insecticidal compounds from Lysurus mokusin by response surface methodology

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Journal of Forestry Research 2020年第5期31卷 1985-1993页

作者： Liannan Lin Jing Yang Guocai Zhang Xiaobo Zhang Chuanshan Zou tingyu wang Jianyong Zeng School of Forestry Northeast Forestry UniversityHarbin 150040People’s Republic of China

We optimized the extraction process of Lysurus mokusin(L.)*** compound(LMIC)using response surface methodology with ultrasonic extraction(UE).The surface morphologies of maceration extract(ME)and UE residues were compared by scanning electron microscopy,and then the activity of LMIC on Lymantria dispar(Asian gypsy moths)larvae was *** showed that the optimal condition of UE was followed by 80 min of extraction time,60%of ethanol concentration and 80 mL g^-1 of liquid–solid *** surface morphologies of UE residue were looser and rougher than ME *** corrected mortalities of LMIC on *** larvae was 59.77%.This result indicated that *** was a good candidate as pesticide for pest management.

关键词： Lysurus mokusin Gypsy moth Response surface Extraction process Toxicity test

Osteoarthritis:toward a comprehensive understanding of pathological mechanism

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Bone Research 2017年第1期5卷 1-13页

作者： Di Chen Jie Shen Weiwei Zhao tingyu wang Lin Han John L Hamilton Hee-Jeong Im Department of Biochemistry Rush University Medical Center Department of Orthopaedic Surgery Washington University Department of Orthopaedics & Traumatology Li Ka Shing Faculty of MedicineThe University of Hong Kong Department of Pharmacy Shanghai Ninth People’s HospitalShanghai Jiao Tong University School of Medicine School of Biomedical Engineering Scienceand Health SystemsDrexel University

Osteoarthritis （OA） is the most common degenerative joint disease and a major cause of pain and disability in adult individuals. The etiology of OA includes joint injury, obesity, aging, and heredity. However, the detailed molecular mechanisms of OA initiation and progression remain poorly understood and, currently, there are no interventions available to restore degraded cartilage or decelerate disease progression. The diathrodial joint is a complicated organ and its function is to bear weight, perform physical activity and exhibit a joint-specific range of motion during movement. During OA development, the entire joint organ is affected, including articular cartilage, subchondral bone, synovial tissue and meniscus. A full understanding of the pathological mechanism of OA development relies on the discovery of the interplaying mechanisms among different OA symptoms, including articular cartilage degradation, osteophyte formation, subchondral sclerosis and synovial hyperplasia, and the signaling pathway（s） controlling these pathological processes.

关键词： OA Osteoarthritis:toward a comprehensive understanding of pathological mechanism ADAMTS NGF

miR-204 ameliorates osteoarthritis pain by inhibiting SP1-LRP1 signaling and blocking neuro-cartilage interaction

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Bioactive Materials 2023年第8期26卷 425-436页

作者： Ke Lu Qingyun wang Liuzhi Hao Guizheng Wei tingyu wang William WLu Guozhi Xiao Liping Tong Xiaoli Zhao Di Chen Research Center for Computer-aided Drug Discovery Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China Faculty of Pharmaceutical Sciences Shenzhen Institute of Advanced TechnologyShenzhen518055China Research Center for Human Tissues and Organs Degeneration Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China Department of Pharmacy Shanghai Ninth People’s HospitalShanghai Jiao-Tong University School of MedicineShanghai200011China Department of Orthopaedics and Traumatology The University of Hong KongHong Kong 999077China School of Medicine Southern University of Science and TechnologyShenzhen518055China

Osteoarthritis(OA)is a painful degenerative joint disease and is the leading cause of chronic disability among elderly *** improve the quality of life for patients with OA,the primary goal for OA treatment is to relieve the *** OA progression,nerve ingrowth was observed in synovial tissue and articular *** abnormal neonatal nerves act as nociceptors to detect OA pain *** molecular mechanisms for transmitting OA pain in the joint tissues to the central nerve system(CNS)is currently *** miR-204 has been demonstrated to maintain the homeostasis of joint tissues and have chondro-protective effect on OA ***,the role of miR-204 in OA pain has not been *** this study,we investigated interactions between chondrocytes and neural cells and evaluated the effect and mechanism of miR-204 delivered by exosome in the treatment of OA pain in an experimental OA mouse *** findings demonstrated that miR-204 could protect OA pain by inhibition of SP1-LDL Receptor Related Protein 1(LRP1)signaling and blocking neuro-cartilage interaction in the *** studies defined novel molecular targets for the treatment of OA pain.

关键词： miR-204 LRP1 Neuro-cartilage interaction Osteoarthritis Pain