期刊文献+
任意字段
题名或关键词
题名
关键词
摘要
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息
共找到5篇文章
< 1 >
每页显示 20 50 100
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
显示方式：
EEG dynamic microstate patterns induced by pulsed wave transcranial photobiomodulation therapy 认领 引用
1
作者 Jiangshan He Hui Xie +11 位作者 Yuqiang Yang Chunli Jia Dan Liang Lianghua Zhang Xiaoyu Wang Tianyi Luo Zexiao Dong Huiting Yang Lei Zheng Zhen Yuan Mingzhe Jiang Xueli Chen 《Advanced Photonics Nexus》 CSCD 2026年第2期134-147,共14页
Transcranial photobiomodulation(tPBM)therapy has demonstrated considerable potential in neuropsychiatric disorders.Several studies have found that pulsed wave(PW)tPBM therapy yields superior biomodulatory effects.Howe... Transcranial photobiomodulation(tPBM)therapy has demonstrated considerable potential in neuropsychiatric disorders.Several studies have found that pulsed wave(PW)tPBM therapy yields superior biomodulatory effects.However,its neural mechanisms are still unknown.We conducted a randomized,single-blind,controlled,crossover study,with PW tPBM administered(8 min,980-nm laser,average power density of 238.85 mW∕cm2).We introduce a novel framework integrating EEG microstate temporal dynamics and brain functional connectivity with explainable machine learning to comprehensively model the tPBM effect.In detail,PW t PBM significantly improved microstate C's mean durations and network metrics with medium to large effect sizes compared with controls.The support vector machine based on radial basis function(RBF SVM)model with kernel Shapley additive explanation(SHAP)analysis[the area under the curve(AUC)=0.956]identified eight of ten key microstate-C-related features driving these effects.In conclusion,the EEG microstate analysis revealed that PW tPBM therapy specifically modulates microstate C patterns in the human brain,suggesting that microstate dynamics may serve as a state-dependent biomarker to optimize the tPBM protocol. 展开更多
关键词 transcranial photobiomodulation pulsed wave EEG microstate explainable machine learning
暂未订购 下载PDF
Passively Q-switched diode-pumped Tm,Ho:LuVO4 laser with a black phosphorus saturable absorber 认领 引用 被引量：2
2
作者 Linjun Li Tianxin Li +4 位作者 Long Zhou Jianying Fan Yuqiang Yang Wenqiang Xie Shasha Li 《Chinese Physics B》 SCIE EI CAS CSCD 2019年第9期203-205,共3页
We presented a passively Q-switched(PQS) diode-pumped c-cut Tm, Ho:LuVO_4 laser with a black phosphorus saturable absorber for the first time.Under PQS mode, an average output power of 0.86 W and a peak power of 2.32 ... We presented a passively Q-switched(PQS) diode-pumped c-cut Tm, Ho:LuVO_4 laser with a black phosphorus saturable absorber for the first time.Under PQS mode, an average output power of 0.86 W and a peak power of 2.32 W were acquired from the Tm, Ho:LuVO4 laser with the pump power of 14.55 W, corresponding to a pulse width of 2.89 μs,a pulse repetition rate of 71.84 kHz, and a pulse energy of about 6.70 μJ. 展开更多
关键词 passively Q-switched(PQS) technology Tm Ho:LuVO4 crystal pulse width
暂未订购 下载PDF
Prediction of Web Services Reliability Based on Decision Tree Classification Method 认领 引用 被引量：3
3
作者 Zhichun Jia Qiuyang Han +2 位作者 Yanyan Li Yuqiang Yang Xing Xing 《Computers, Materials & Continua》 SCIE EI 2020年第6期1221-1235,共15页
With the development of the service-oriented computing(SOC),web service has an important and popular solution for the design of the application system to various enterprises.Nowadays,the numerous web services are prov... With the development of the service-oriented computing(SOC),web service has an important and popular solution for the design of the application system to various enterprises.Nowadays,the numerous web services are provided by the service providers on the network,it becomes difficult for users to select the best reliable one from a large number of services with the same function.So it is necessary to design feasible selection strategies to provide users with the reliable services.Most existing methods attempt to select services according to accurate predictions for the quality of service(QoS)values.However,because the network and user needs are dynamic,it is almost impossible to accurately predict the QoS values.Furthermore,accurate prediction is generally time-consuming.This paper proposes a service decision tree based post-pruning prediction approach.This paper first defines the five reliability levels for measuring the reliability of services.By analyzing the quality data of service from the network,the proposed method can generate the training set and convert them into the service decision tree model.Using the generated model and the given predicted services,the proposed method classifies the service to the corresponding reliability level after discretizing the continuous attribute of service.Moreover,this paper applies the post-pruning strategy to optimize the generated model for avoiding the over-fitting.Experimental results show that the proposed method is effective in predicting the service reliability. 展开更多
关键词 Decision tree reliability level quality of service continuous attribute
暂未订购 下载PDF
Multi-method characterization of sandstone pore size distribution heterogeneity and its influence on porosity and permeability variation 认领 引用 被引量：1
4
作者 Junjian ZHANG Fangkai QUAN +5 位作者 Hui ZHANG Yinchuan SHAO Yanning HAN Yuqiang YANG Xiangchun CHANG Xiaoyang ZHANG 《Frontiers of Earth Science》 SCIE CSCD 2024年第4期814-830,共17页
Pore volume/surface area and size distribution heterogeneity are two important parameters of pore structures,which restrict the gas-water-oil migration process in sandstone reservoirs.The fractal theory has been prove... Pore volume/surface area and size distribution heterogeneity are two important parameters of pore structures,which restrict the gas-water-oil migration process in sandstone reservoirs.The fractal theory has been proved to be one of the most effective methods to quantify pore distribution heterogeneity.However,the dynamic variation of porosity and permeability due to fractal characteristics has been rarely studied.In this paper,physical properties,mineral composition,and pore distribution of 18 groups of sandstone samples were analyzed using scanning electron microscope(SEM)and high-pressure mercury injection tests.Then,Sierpinski model,Menger model,thermodynamic model,and multi-fractal model were used to calculate the fractal dimension of the pore volume.Thus,the relationship between fractal dimension and porosity/permeability variation rate,and pore compressibility were studied.The results are as follows.1)All samples can be divided into three types based on pore volume(0.9 cm3∙g−1)and mercury removal efficiency(35%),i.e.,Type A(0.9 cm3∙g−1 and0.9 cm3∙g−1 and>35%).2)Four fractal models had poor applicability in characterizing fractal characteristics of different sample types.The fractal dimension by the Sierpinski model had a good linear correlation with that of other models.Pores with smaller volumes dominated the overall pore distribution heterogeneity by multi-fractal dimension.The pore diameter between 200−1000 nm and larger than 1000 nm was the key pore size interval that determined the fractal characteristics.3)With the increase of confining pressures,porosity and permeability decreased in the form of a power function.The compressibility coefficient of typical samples was 0.002−0.2 MPa−1.The compressibility of Types A and B was significantly higher than that of Type C,indicating that the total pore volume was not the key factor affecting the pore compressibility.The correlation of compressibility coefficient/porosity variation rate with pore volume(total and different size pore volume),fractal value and mineral component were not significant.This indicates that these three factors comprehensively restricted pore compression. 展开更多
关键词 tight sandstone pore size distribution fractal dimension multi-fractal model permeability-porosity
暂未订购 下载PDF
Active/passive Q-switching operation of 2 μm Tm,Ho:YAP laser with an acousto-optical Q-switch/MoS_2 saturable absorber mirror 认领 引用 被引量：7
5
作者 LINJUN LI XINING YANG +9 位作者 LONG ZHOU WENQIANG XIE YUNLONG WANG YINGJIE SHEN YUQIANG YANG WENLONG YANG WEI WANG ZHIWEI LV XIAOMING DUAN MINGHUA CHEN 《Photonics Research》 SCIE EI CAS 2018年第6期614-619,共6页
The active/passive Q-switching operation of a 2 [tm a-cut Tm,Ho：YAP laser was experimentally demonstrated with an acousto-optical Q-switch/MoS2 saturable absorber mirror. The active Q-switch laser was operated for th... The active/passive Q-switching operation of a 2 [tm a-cut Tm,Ho：YAP laser was experimentally demonstrated with an acousto-optical Q-switch/MoS2 saturable absorber mirror. The active Q-switch laser was operated for the first time, to the best of our knowledge, with an average output power of 12.3 W and a maximum pulse energy of 10.3 mJ. The passive Q-switch laser was also the first acquired with an average output power of 3.3 W and per pulse energy of 23.31 μJ, and the beam quality factors of Mx^2 = 1.06 and My^2 = 1.06 were measured at the average output power of 2 W. 展开更多
关键词 Lasers Q-switched Lasers solid-state
暂未订购 下载PDF
已选0条
引用分析
参考文献
引证文献
 统计分析
检索结果
已选文献
上一页 1 下一页 到第 页
在线咨询 使用帮助 返回顶部 意见反馈