Results 101 to 110 of about 144,869 (263)

vEMRec: High‐Resolution Volume Electron Microscopy Reconstruction Based on Structure‐Preserving and High‐Fidelity 3D Alignment

Advanced Science, EarlyView.
vEMRec is a frequency‐adaptive computational framework for three‐dimensional alignment in volume electron microscopy. It integrates feature‐based rigid alignment with Gaussian filter‐guided elastic registration to correct rigid misalignments and nonlinear distortions while preserving structural fidelity.
Zhenbang Zhang, Hongjia Li, Zhongjun Yang, Zhiqiang Xu, Duanchen Sun, Xin Gao, Fa Zhang, Renmin Han   +7 more
wiley   +1 more source

Active coupling radar array design approach for direction-of-arrival estimation

Results in Engineering
In this paper, space-constrained scenarios for radar arrays are investigated. To improve the performance of direction-of-arrival (DOA) estimation for both uniform linear and planar arrays, an innovative design approach for active coupling radar arrays is
Jingyu Cong, Huafei Wang, Kai Xie, Zhenmiao Deng   +3 more
doaj   +1 more source

Label‐Free and Immobilization‐Free Protein‐Binding Assays by Ultraviolet Transient Absorption Microscopy

Advanced Science, EarlyView.
A femtosecond UV pump–probe microscope resolves binding‐induced changes in protein excited‐state dynamics and converts these intrinsic contrasts into an equilibrium affinity readout. By probing tryptophan responses directly in solution, the approach enables quantitative determination of dissociation constants without labeling or immobilization ...
Jianghao Shen, Qiangqiang Wang, Fan Wu, Yang Gao, Lu Lan, Pu Wang   +5 more
wiley   +1 more source

Intrinsic PPG–ECG Coupling for Accurate and Low‐Power Blood Pressure Monitoring

Advanced Science, EarlyView.
A PPG–ECG coupling strategy for continuous blood pressure monitoring that intrinsically synchronizes signals within a single waveform is demonstrated, minimizing synchronization errors and hardware complexity. This approach halves power consumption while maintaining high accuracy, enabling compact, energy‐efficient wearable devices for personalized ...
Sitong Chen, Hua Luo, Zhentao Yao, Zhou Jiang, Xiaodong Wu, Hanmin Liu   +5 more
wiley   +1 more source

Research on accurate ranging of UWB under indoor environments

Tongxin xuebao, 2007
The accurate ranging ability of ultra wideband（UWB） signal under IEEE 802.15.4a indoor channel model was studied.An improved time-of-arrival（TOA） estimation algorithm which utilizes region search and threshold comparison was proposed.By statistical ...
WU Shao-hua, ZHANG Nai-tong
doaj   +2 more sources

Ultrathin‐Gold‐Resonators‐Enabled Bolometers with High Linearity, Responsivity, and Repeatability

Advanced Science, EarlyView.
This work demonstrates ultrathin gold nanomechanical resonators operating in HF/VHF bands, unveiling their potential for laser power sensing. By exploiting frequency shifts resulting from laser‐induced thermal tension, these devices can function as sensitive nanoscale bolometers, with outstanding linearity, responsivity, and repeatability. The findings
Jiaqi Wu, Luming Wang, Jing Yu, Chenfei Lv, Ziluo Su, Jiaze Qin, Bo Xu, Kuai Yu, Jiankai Zhu, Zenghui Wang   +9 more
wiley   +1 more source

Compressive TDOA Estimation Method Based on Amplitude Phase Clustering in Time-Frequency Domain

IET Signal Processing
In the field of signal processing, modulation signals, including phase shift keying (PSK) and quadrature amplitude modulation (QAM), can significantly enhance the signal-to-noise ratio (SNR) through aliasing transmission following clustering and sorting.
Yang Jiao, Changxiong Xia, Jingyu Zhai, Tianyi Xing, Qun Wan   +4 more
doaj   +1 more source

Atomic Defects in Layered Transition Metal Dichalcogenides for Sustainable Energy Storage and the Intelligent Trends in Data Analytics

Advanced Science, EarlyView.
This review comprehensively summarizes the atomic defects in TMDs for their applications in sustainable energy storage devices, along with the latest progress in ML methodologies for high‐throughput TEM data analysis, offering insights on how ML‐empowered microscopy facilitates bridging structure–property correlation and inspires knowledge for precise ...
Zheng Luo, Ying Yang, Zizhen Fu, Fengqi Liu, Susu Fang, Kele Xu, Shanshan Wang   +6 more
wiley   +1 more source

High-Accuracy Radar Parameter Estimation Under Low SNR Environments

IEEE Access
This paper proposes a high-accuracy radar parameter estimation method for extremely low signal-to-noise ratio (SNR) environments, integrating deep learning and connected component analysis (CCA). Accurate estimation of parameters such as time of arrival,
Jaehyeok Yoon, Siho Lee, Woojin Yun, Haewoon Nam   +3 more
doaj   +1 more source

Tracking performance and cycle slipping in the all-digital symbol synchronizer loop of the block 5 receiver [PDF]

Computer simulated noise performance of the symbol synchronizer loop (SSL) in the Block 5 receiver is compared with the theoretical noise performance. Good agreement is seen at the higher loop SNR's (SNR(sub L)'s), with gradual degradation as the SNR(sub
Aung, M.
core   +1 more source