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Nano Research 2023年第9期16卷 11822-11831页

作者： Yunqi Cao Hongyang Shi xiaobo tan Nelson Sepúlveda State Key Laboratory of Industrial Control Technology College of Control Science and EngineeringZhejiang UniversityHangzhou 310027China Department of Electrical and Computer Engineering Michigan State UniversityEast LansingMichigan 48824USA

Lakes areas,which cause catastrophic damages in both commercial fishery and ecological ***,current assessment strategies may pose challenges for lake-wide abundance estimation and non-target anadromous species ***,we demonstrate an efficacious species-specific non-destructive sensing system based on porous ferroelectret nanogenerator for in-situ monitoring of lamprey spawning migration using their unique suction *** show that the porous structure enables a redistribution of surface charges under bidirectional deformations,which allows the detection of both positive and negative *** quasi-piezoelectric effect is further validated by quantitative analysis in a wide pressure range of−50 to 60 kPa,providing detailed insights into transduction working *** reliable lamprey detection,a 4×4-pixel sensor array is developed and integrated with a complementary metal-oxide-semiconductor(CMOS)based signal processing array thus constituting a sensing panel capable of recording oral suction patterns in an underwater environment.

关键词： bidirectional pressure sensing nanogenerators self-powered sensor array ferroelectret invasive species detection

An artificial lateral line system using IPMC sensor arrays

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International Journal of Smart and Nano Materials 2012年第3期3卷 226-242页

作者： Ahmad T.Abdulsadda xiaobo tan Smart Microsystems Laboratory Department of Electrical and Computer EngineeringMichigan State UniversityEast LansingMI 48824 USA January 92012

Most fish and aquatic amphibians use the lateral line system,consisting of arrays of hair-like neuromasts,as an important sensory organ for prey/predator detection,communication,and *** this paper a novel bio-inspired artificial lateral line system is proposed for underwater robots and vehicles by exploiting the inherent sensing capability of ionic polymer-metal composites(IPMCs).Analogous to its biological counterpart,the IPMC-based lateral line processes the sensor signals through a neural *** effectiveness of the proposed lateral line is validated experimentally in the localization of a dipole source(vibrating sphere)*** particular,as a proof of concept,a prototype with body length(BL)of 10 cm,comprising six millimeter-scale IPMC sensors,is constructed and *** results have shown that the IPMC-based lateral line can localize the source from 1-2 BLs away,with a maximum localization error of 0.3 cm,when the data for training the neural network are collected from a grid of 2 cm by 2 cm *** effect of the number of sensors on the localization accuracy has also been examined.

关键词： ionic polymer-metal composite(IPMC) lateral line system neural networks flow sensing dipole source localization

Digital Channelization Technology for HF Communication Base on Fast Filter Bank

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China Communications 2018年第9期15卷 35-45页

作者： Yixin Fan Fanglin Gu xiaobo tan Ling Wang College of Electronic and Information Engineering Hunan University College of Electronic Science National University of Defense Technology Model Office in Aerospace Industry Group Corporation PLA Rocket Force

Channelization typically realized by digital filter banks is an important topic in high frequency(HF) communication and software defined radios(SDR) areas. Channelization has a rigorous requirement for the characteristic of frequency response, e.g., steep transitional band and sharp decay. To address this issue, we investigated the feasibility and implementation of applying fast filter bank(FFB) in channelization in this paper. We analyzed the butterfly structure of FFB similar with fast Fourier transform(FFT), in which prototype sub-filters are cascaded to achieve a low complexity. Hence, it is suitable for designing filter bank with steep transitional band and sharp decay in stop-band. Moreover, we designed a pipelined structure of FFB to achieve a balance between area and performance. Design example shows that FFB has lower computational complexity compared with the other filter banks.

关键词： fast filter bank (FFB) high frequency (HF) channelization software defined radio (SDR)

Enhanced thermoelectric performance and mechanical strength in GeTe enable power generation and cooling

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InfoMat 2024年第4期6卷 56-67页

作者： Jianglong Zhu Fujie Zhang Yilin Tai xiaobo tan Qian Deng Pengfei Nan Ruihuan Cheng Chengliang Xia Yue Chen Binghui Ge Ran Ang Key Laboratory of Radiation Physics and Technology Ministry of EducationInstitute of Nuclear Science and TechnologySichuan UniversityChengduthe People's Republic of China Institutes of Physical Science and Information Technology Anhui UniversityHefeithe People's Republic of China Department of Mechanical Engineering The University of Hong KongHong KongSARthe People's Republic of China Institute of New Energy and Low-Carbon Technology Sichuan UniversityChengduthe People's Republic of China

Finding a real thermoelectric(TE)material that excels in various aspects of TE performance,mechanical properties,TE power generation,and cooling is challenging for its ***,we report a novel multifunctional Ge0.78Cd0.06Pb0.1Sb0.06Te material with excellent TE performance and mechanical strength,which is utilized to construct candidate TE power generation and cooling devices near room ***,the effectiveness of band convergence,combined with optimized carrier concentration and electronic quality factor,distinctly boosts the Seebeck coefficient,thus greatly improving the power *** electron microscopy observation indicates that complex multi-scale hierarchical structures and strain field distributions lead to ultra-low lattice thermal conductivity,and also effectively enhance mechanical *** ZT0.6 at 303 K,average ZTave1.18 from 303 to 553 K,and Vickers hardness of200 Hv in Ge0.78Cd0.06Pb0.1Sb0.06Te are obtained ***,a 7-pair TE cooling device with a maximumΔT of45.9 K at Th=328 K,and a conversion efficiency of5.2%at Th=553 K is achieved in a single-leg *** present findings demonstrate a unique approach to developing superior multifunctional GeTe-based alloys,opening up a promising avenue for commercial applications.

关键词： cooling GeTe mechanical strength power generation thermoelectric

Effect of Yiqihuoxue prescription on myocardial energy metabolism after myocardial infarction via cross talk of liver kinase B1-depen-dent Notch1 and adenosine 5'-monophosphate-activated protein kinase

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Journal of Traditional Chinese Medicine 2017年第3期37卷 378-386页

作者： Wu Jiangong Chen Xi Guo Shuwen Liu Wenchen Zhang Lu Li Fanghe Wu Jiani Huang Xiaolou Cai Qian tan xiaobo Wang Hui Institute of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 100029China

OBJECTIVE: To investigate the effect of Yiqihuoxue prescription(YQHX) from Traditional Chinese Medicine(TCM) on myocardial glucose and lipid metabolism after myocardial infarction via the cross talk between the liver kinase B1(LKB1)-dependent Notch1 and adenosine 5'-monophosphate(AMP)-activated protein kinase(AMPK). YQHX was prepared with substances with properties that benefit, to activate blood circulation based on the TCM ***: Animal models of myocardial infarction were established by ligating Sprague Dawley rats' left anterior descending coronary arteries. The animals were randomly divided into a myocardial infarction(MI) group, a YQHX group, a perindopril group, a γ-secretase inhibitor, Notch signal inhibitor(DAPT) group, a DAPT+YQHX group and a sham group. The related drugs were administered on the second day after operation, and changes in the relevant indexes were examined on weeks 1 and *** in cardiac structure and function were examined by echocardiography. The glucose and free fatty acids(FFA) were examined by ELISA. The expression of Notch, LKB1 and AMPK m RNA was examined by a real-time fluorescence quantitative method. The expression of glucose transporter 4(GLUT4), and the expression of total acetyl-Co A carboxylase(ACC) and its phosphorylation were examined by western ***: Compared with the sham group, the expression of Notch, LKB1 and AMPK m RNA in the MI group was lower. Compared with the MI group, the expression of these m RNAs in the YQHX and perindopril groups was higher, and their expression in the DAPT group was lower. At all time points, the protein expression of GLUT4 and p ACC decreased in the MI group. On week 1, the expression of p ACC protein was higher. In the DAPT group, the expression of p ACC protein decreased. Compared with the YQHX group, the expression of p ACC protein in the DAPT + YQHX group was lower. On week 4,compared with the MI group, the expression of GLUT4 protein in the YQHX group and the pe

关键词： Myocardial infarction Reinforcing Qi ac-tivating blood Lipid metabolism Receptor, Notch1 AMP-activated protein kinases

An Overview of the Retinal and Choroidal Changes and Their Influencing Factors after Treatment of Amblyopia

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Open Journal of Ophthalmology 2022年第2期12卷 158-169页

作者： Liuyi Jing Jing Shi xiaobo tan Jie Yang Xingyu Chen Department of Ophthalmology Affiliated Hospital of Chengde Medical College Chengde China

Purpose of Review: Amblyopia is the reduction in the best-corrected visual acuity of one or both eyes and the most common cause of the loss of vision in children. Previously, amblyopia was thought to have no organic lesions. However, the latest “Amblyopia Preferred Practice Pattern” of 2017 points out that in amblyopia, the eye structure is abnormal with a defective eye function, with few differences from the structure of contralateral non-amblyopic eyes. With the development of optical coherence tomography and optical coherence tomography angiography, it has been observed that even the ocular structure of amblyopic eyes is different from that of normal eyes. Here, we review studies investigating the changes in amblyopic eye structure upon treatment. Review Findings: The pathogenesis of amblyopia is controversial and not well-understood. The retina, choroid, and blood vessels of amblyopic eyes are different from those of normal eyes. Further, the various types of amblyopia are affected differently upon treatment. Because of the scarcity of studies and long-term follow-up observations, the underlying reason for such differences is unclear. Age, gender, and axial length are the influencing factors of the retina and choroid, and the relationship of these factors with amblyopia needs to be investigated further. Conclusion: This review will help us understand the pathogenesis of amblyopia and the underlying mechanism for the changes that occur upon treatment. Further, knowledge of the changes in ocular structure summarized here will be helpful for the diagnosis and treatment of amblyopia.

关键词： Amblyopia Children Retina Choroid Optical Coherence

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一种数字通信信号盲信噪比估计方法

数据采集与处理 2011年第5期26卷 547-552页

作者：谭晓波张杭解放军理工大学通信工程学院南京210007

针对数字通信信号的信噪比盲估计问题,提出了一种基于子空间理论的盲信噪比估计方法。该方法首先根据信号自相关序列构建特定维数的信号自相关矩阵,并根据实际工程应用需求,利用坐标旋转数字计算(Coordinate rotation digital computer,... 详细信息

针对数字通信信号的信噪比盲估计问题,提出了一种基于子空间理论的盲信噪比估计方法。该方法首先根据信号自相关序列构建特定维数的信号自相关矩阵,并根据实际工程应用需求,利用坐标旋转数字计算(Coordinate rotation digital computer,CORDIC)算法实现Jacobi旋转来完成自相关矩阵的特征值分解,避免了实际实现时对硬件乘法器的调用。并以6种常用的数字通信信号为例,在加性高斯白噪声(AWGN)信道条件下,实际信噪比在-10～30dB范围内时对其信噪比估计性能进行仿真分析。仿真表明,当实际信噪比为-5～22dB时,信噪比估计标准偏差小于0.5dB,且提出的信噪比估计器具有渐近无偏特性,证明了该方法是一种进行盲信噪比估计的有效方法。

关键词：信噪比估计子空间分解坐标旋转数字计算 Jacobi旋转特征值

中国银行信贷项目环境风险评估模型的构建和应用

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广东金融学院学报 2011年第4期26卷 15-24页

作者：符淼谭小波广东外语外贸大学国际经贸学院广东广州510521

拥有自己的环境风险评估模型是银行进行独立环境决策和进一步降低环境风险的基础,也是强化信贷手段在预防和控制环境污染两方面作用的需要。参照银行绿色信贷的赤道原则构建信贷项目的环境风险评估指标体系,并通过问卷调查和层次分析法... 详细信息

拥有自己的环境风险评估模型是银行进行独立环境决策和进一步降低环境风险的基础,也是强化信贷手段在预防和控制环境污染两方面作用的需要。参照银行绿色信贷的赤道原则构建信贷项目的环境风险评估指标体系,并通过问卷调查和层次分析法确定四大国有银行、中型银行、小型银行和外资银行共四类商业银行的指标权重,建立起符合他们各自风险偏好的环境风险评估模型,再以实例分析来说明模型的具体应用过程,结果发现,非外资银行偏重包含政策因素的社会环境指标,在自然环境因素中偏重污染物排放指标;外资银行则具有较平均的权重,且重视生态、社区和工作环境等指标。

关键词：环境风险评估绿色信贷指标体系层次分析法

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电动汽车准实时协同充放电策略

电工技术学报 2015年第13期30卷 69-76页

作者：谭小波赵海彭海霞李大舟东北大学信息科学与工程学院沈阳110819 沈阳理工大学信息科学与工程学院沈阳110159 滑铁卢大学宽带通信实验室沈阳化工大学计算机科学与技术学院沈阳110142

电动汽车作为未来能源互联网的重要组成部分得到了越来越多的关注。针对电动汽车的充放电问题,提出一个准实时的协同充放电多代理系统。系统采用M/G/∞排队模型预测未来短时间内电动汽车的充电负载需求,为充放电决策提供准实时信息。在... 详细信息

电动汽车作为未来能源互联网的重要组成部分得到了越来越多的关注。针对电动汽车的充放电问题,提出一个准实时的协同充放电多代理系统。系统采用M/G/∞排队模型预测未来短时间内电动汽车的充电负载需求,为充放电决策提供准实时信息。在不破坏配电网系统限制的前提下,以最大化用户充电需求满意度和最小化用户充电成本为目标的两阶段优化策略在满足用户充电需求的同时,节约了用户的充电成本。仿真结果表明,采用两阶段优化策略的多代理系统可有效实现电动汽车高渗透率下的协同充放电管理,增强了系统的健壮性。

关键词：能源互联网多代理电动汽车两阶段优化排队模型

人工智能赋能政府治理转型的逻辑、边界与路径——从数字治理到智慧治理的场景转换

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中共天津市委党校学报 2023年第5期25卷 54-65页

作者：司林波谭筱波西北大学公共管理学院陕西西安710127

人工智能技术变革赋能政府治理转型,为政府治理从数字治理走向智慧治理提供机遇和支撑。人工智能赋能政府治理转型,遵循情境转换、理念嬗变、技术创新、功能转化、机制完善和价值实现的逻辑机理。面对人工智能赋能政府治理转型可能带来... 详细信息

人工智能技术变革赋能政府治理转型,为政府治理从数字治理走向智慧治理提供机遇和支撑。人工智能赋能政府治理转型,遵循情境转换、理念嬗变、技术创新、功能转化、机制完善和价值实现的逻辑机理。面对人工智能赋能政府治理转型可能带来的挑战和风险,需要从技术应用、决策辅助、数据安全、民主参与和价值实现层面厘清赋能边界,坚持技术祛魅与技术化归相结合,强化智能决策与人类决策相融合,注重数据运作与规范管理相配合,突出政府主导与民主参与相适应,实现多元价值与统一规范相协调,通过人工智能技术的规范应用助力政府智慧治理的实现。

关键词：数字治理智慧治理人工智能治理转型治理边界

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