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.
This paper presents a novel fault diagnosis model for oil-immersed power transformers based on dissolved gas analysis. The model is rooted on the theories of rough set and support vector machine. A fitness function based on attribute dependence is developed to identify fault features to improve classification accuracy of transformer fault samples by using Genetic Algorithm. To get improved classification...
CMOS-compatible GaN-on-silicon technology with excellent D-mode MISHFET performance is realized. A low specific contact resistance Rc (0.35 Ω-mm) is achieved by Au-free process. MIS-HFET with a gate-drain distance (LGD) of 15 μm exhibits a large breakdown voltage (BV) (980 V with grounded substrate) and a low specific on-resistance (R ON,sp) (1.45 mΩ-cm2). The importance of epitaxial quality in a...
A cost competitive 20nm technology node is described that enabled industry-first 20nm cellular modem chip with 2× peak data rates vs 28nm, and 2× carrier aggregation. Process and design enhancements for layout context optimization, and continuous process improvements resulted in 18% boost in circuit performance while simultaneously achieving >30% power reduction. 3 mask local interconnect and 64nm...
The Experimental Advanced Superconducting Tokamak (EAST) is a superconducting tokamak, which successfully achieved the first plasma discharging in 2006. The major radius of EAST plasma is 1.9m, and its central magnet filed is 3.5T. In the past few years, EAST has made many achievements such as 60s double-null divertor configuration plasma and 1MA plasma. In 2012, 411s long-pulse discharging with 0...
Smart energy management system (SEMS) is a core part of a smart grid system, which can make this system more intelligent. The final goal of SEMS is to lay a groundwork which would allow efficient management of the smart grid by minimizing the operating costs and by reducing the emission level while meeting the load demand. In this paper, a new technique called as the jump and shift method is developed...
An acousto-optic dispersive filter (AOPDF) is used to pre-compensate spectral narrowing and to measure (DazScope software from Fastlite) the spectral phase induced by SPM and then compensate for the measured phase distortion. The paper presents the results of SHG spectra versus chirp traces together with the extracted local chirp function for four states: initial state at low energy, coarsely optimized...
We present automated optimization of the temporal duration of femtosecond pulses generated in a CPA laser system with high B-integral. Both phase measurement and correction were done by a single AOPDF within the CPA system.
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.