The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In order to recognizing the feature of abnormality in advance and fix the possible dirty data simultaneously, this article proposed a method to construct a proper mode for a production process producing specific product, a method to estimate the stability of a linear process and a group of data cleaning rule. Both the data processing procedure and algorithm are given detailedly with some samples and...
ELM works for the “generalized” singlehidden layer feedforward networks (SLFNs) but the hidden layer (or called feature mapping) in ELM needs not be tuned. Extreme Support Vector Machine (ESVM), combining Support Vector Machine (SVM) and Extreme Learning Machine (ELM) kernels, can lead to a better prediction capability. ESVM can usually have a relatively good predictive capability, and its training...
A new type of calculable capacitor was initially built at the National Institute of Metrology, China, in cooperation with the National Measurement Institute, Australia. The capacitor realized the SI unit of capacitance at 1 pF, with an uncertainty of 20 parts in $10^{9}$ . A simplified operational approach was used that avoids the complex substitution measuring process with small-value capacitors...
We report in CPEM 2014 our effort towards SNS Josephson junction devices for the quantum voltage standard. SNS junction array device, with Nb as the superconductor material (S) and NbxSi1−x alloy as the barrier material (N), is fabricated and tested by NIM (National Institute of Metrology). The I–V characteristic curves of the junction arrays are measured and the experimental results are discussed.
A new type calculable capacitor has been studied and developed at NIM in cooperation with NMIA. The situation and the preliminary results are presented with uncertainty of 20 parts in 109 for realization of the capacitance unit to 1 pF.
Longitudinal magnetic resonance (MR) images of the same subject often vary significantly in their overall contrast. Intensity standardization aims to minimize the inter-scan intensity variations by transforming the intensities into a standard gray scale, but true anatomical changes over time are often masked out. We propose an intensity standardization method based on four dimensional Fuzzy C-means...
We report in CPEM 2012 our effort towards SNS Josephson junction devices for the quantum voltage standard. A single-junction SNS device, with Nb as the superconductor material (S) and NbxSi1−x alloy as the barrier material (N), is fabricated and tested for the first time by NIM (National Institute of Metrology). A I–V characteristic curve of the junction is measured and the experimental results are...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.