Results 11 to 20 of about 1,529,727 (337)

A Hybrid Strategy for Profile Measurement of Micro Gear Teeth

open access: yesMicromachines, 2023
A hybrid strategy is proposed to meet the challenge of obtaining the profile of micro gear teeth with a small modulus. Firstly, the contact probe segmentally obtained the falling flank profiles with an auxiliary lifting mechanism to avoid interference ...
Guangyao Huang   +5 more
doaj   +1 more source

Separations in Query Complexity Based on Pointer Functions [PDF]

open access: yes, 2015
In 1986, Saks and Wigderson conjectured that the largest separation between deterministic and zero-error randomized query complexity for a total boolean function is given by the function $f$ on $n=2^k$ bits defined by a complete binary tree of NAND gates
Ambainis, Andris   +5 more
core   +5 more sources

Quantifying the error of the core–valence separation approximation [PDF]

open access: yesThe Journal of Chemical Physics, 2020
For the calculation of core-excited states probed through X-ray absorption spectroscopy, the core–valence separation (CVS) scheme has become a vital tool. This approach allows us to target such states with high specificity, albeit introducing an error.
Michael F. Herbst, Thomas Fransson
openaire   +3 more sources

Variable Step-size EASI Blind Source Separation Algorithm Based on Crosstalk Error and Separation Degree [PDF]

open access: yesJisuanji gongcheng, 2017
When the source signal consists of components with large energy difference or the global matrix is a non-row element dominant matrix,the variable step-size Equivariant Adaptive Separation via Independence(EASI) algorithm based on crosstalk error cannot ...
LI Zhenbi,WANG Kang,JIANG Yuanyuan
doaj   +1 more source

Guidance Systematic Error Separation for Mobile Launch Vehicles Using Artificial Fish Swarm Algorithm

open access: yesIEEE Access, 2019
For missile's accuracy assessment, an accurate separation about the guidance of systematic errors is a critical part. Based on the vehicles from a mobile launcher platform, this paper proposes a nonlinear error separation model and a corresponding method
Xuanying Zhou   +5 more
doaj   +1 more source

Performance Prediction Model of Dynamic Pressure Oil-Air Separator

open access: yesInternational Journal of Aerospace Engineering, 2021
Based on the aeroengine lubricating oil system test bench, this paper used a dimensional analysis method to establish a mathematical model for predicting the separation efficiency and resistance of a dynamic pressure oil-air separator suitable for ...
Xiaobin Zhang   +4 more
doaj   +1 more source

Towards Better Separation between Deterministic and Randomized Query Complexity [PDF]

open access: yes, 2015
We show that there exists a Boolean function $F$ which observes the following separations among deterministic query complexity $(D(F))$, randomized zero error query complexity $(R_0(F))$ and randomized one-sided error query complexity $(R_1(F))$: $R_1(F)
Mukhopadhyay, Sagnik, Sanyal, Swagato
core   +2 more sources

Global Mean Square Error Separation Loss

open access: yesJournal of Physics: Conference Series, 2022
Class imbalance problem greatly affects the accuracy of deep-learning-based object detectors. To weaken its influence, this paper proposes a global mean square error separation loss (GMSES Loss). GMSES Loss assigns a factor to each example, and then enhances the learning of hard-to-learn examples by reducing the factors of easy-to-learn examples ...
openaire   +1 more source

A Novel Improved Threshold Adaptive Forgetting Variable Step Size Blind Separation Model for Weak Signal Detection

open access: yesShock and Vibration, 2022
The online blind source separation (BSS) is seriously disturbed by strong noise when extracting weak signals and has the defects that it cannot both give consideration to convergence speed and steady-state error.
Tianyi Yu   +6 more
doaj   +1 more source

A newly conceived cylinder measuring machine and methods that eliminate the spindle errors [PDF]

open access: yes, 2012
Advanced manufacturing processes require improving dimensional metrology applications to reach a nanometric accuracy level. Such measurements may be carried out using conventional highly accurate roundness measuring machines.
DAMAK, Mohamed   +4 more
core   +5 more sources

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