Results 61 to 70 of about 605,271 (198)

Dynamic Detection Device for Transverse Defects of Tubing

Shiyou jixie, 2018
To address the problem of low visibility and poor detection accuracy of traditional magnetic flux leakage detection device on the transverse and longitudinal defects of the tubing, a transverse defect detection device was designed. Based on the theory of
Ding Chao, Tang Donglin, Wang Bin, Zhang Wenwen   +3 more
doaj  

Chemical exchange saturation transfer MRI for neurodegenerative diseases: An update on clinical and preclinical studies

Neural Regeneration Research
Chemical exchange saturation transfer magnetic resonance imaging is an advanced imaging technique that enables the detection of compounds at low concentrations with high sensitivity and spatial resolution and has been extensively studied for diagnosing ...
Ahelijiang Saiyisan, Shihao Zeng, Huabin Zhang, Ziyan Wang, Jiawen Wang, Pei Cai, Jianpan Huang   +6 more
doaj   +1 more source

Atom detection in a two-mode optical cavity with intermediate coupling: Autocorrelation studies

, 2009
We use an optical cavity in the regime of intermediate coupling between atom and cavity mode to detect single moving atoms. Degenerate polarization modes allow excitation of the atoms in one mode and collection of spontaneous emission in the other, while
D. G. Norris, E. J. Cahoon, H. J. Carmichael, H. J. Carmichael, L. A. Lugiato, L. A. Orozco   +5 more
core   +1 more source

Saturation Attacks on DM CV-QKD: Threat Analysis and Machine Learning-Based Defense

IEEE Access
Discretely modulated continuous-variable quantum key distribution (DM CV-QKD) protocols, while promising for extended transmission distances, face significant security threats in practice due to discrepancies between theoretical and actual system models.
Ye Li
doaj   +1 more source

Study on the Relationship between Lithological Differences and Electromagnetic Changes during Mine Water Inrush [PDF]

Lithosphere
To address the issue of low detection and identification accuracy of water sources and channels under mine water inrush conditions. The effects of lithology, water saturation, and salinity on the conductivity of five kinds of coal and rock were studied ...
Heng Zhang, Bingqing Xue, Xuguo Liu, Jingxuan Wei, Ran Ding, Yan Zhao, Liang Liang, Ziyue Jia   +7 more
doaj   +1 more source

Performance of Graphene Thermal Photon Detectors

, 2012
We analyze the performance of graphene microstructures as thermal photon detectors and deduce the range of parameters that define a linear response. The saturation effects of a graphene thermal detector that operates beyond the linear range are described
Karasik, Boris S., McKitterick, Chris B., Prober, Daniel E.   +2 more
core   +1 more source

Entropic uncertainty relations and the measurement range problem, with consequences for high-dimensional quantum key distribution

, 2018
The measurement range problem, where one cannot determine the data outside the range of the detector, limits the characterization of entanglement in high-dimensional quantum systems when employing, among other tools from information theory, the entropic ...
Bourassa, J. Eli, Lo, Hoi-Kwong
core   +1 more source

Current Transformer Saturation Detection Using Gaussian Mixture Models

Journal of Applied Research and Technology, 2013
AbstractThis paper presents a novel current transformer (CT) saturation detection approach based on Gaussian Mixture Models (GMMs). High accuracy is the advantage of this method. GMMs are trained with secondary current of CT. The appropriate performance of the proposed method is tested by simulation of different fault conditions in PSCAD/EMTDC software.
Haji, M. Moghimi, Vahidi, B., Hosseinian, S.H.   +2 more
openaire   +1 more source

A Fault Tolerant Approach to Anti-windup Gain Implementation

Revista Técnica de la Facultad de Ingeniería, 2009
A new approach to anti-windup gain implementation is shown. To this aim, a fault detection and isolation system is used. Actuators saturation is taken as a failure in the control system, which is detected and isolated by means of a fault detection filter
Wilber Acuña-Bravo, Addison Ríos-Bolívar   +1 more
doaj  

Current transformer saturation detection by cross-correlation with independent target signal

Ain Shams Engineering Journal
The saturation of current transformers (CTs) leads to distortion in secondary current, potentially causing malfunction in protective relays within power systems.
Mahmoud M. Elgamasy, Mohamed S. Zaky, Ahmed F. Zobaa, Mahmoud A. Elsadd   +3 more
doaj   +1 more source