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.
The application of plasmonic dimeric nanostructures in color displays, data storage, and especially metamaterials necessitates the patterning of dimers into ordered arrays, but controllable assembly of plasmonic nanoparticles into patterned dimer arrays on substrates still remains a challenge. Here, a facile laser‐scanning‐based strategy to fabricate quasi‐3D patterned arrays of plasmonic nanoparticle...
This paper presents an efficient navigation system which presents the navigation information to the visually impaired via Kinect and vibrotactile belt. The system consists of three parts. The first part is Kinect, which is used for obstacles detection. The second part is a laptop, the laptop processes the depth data of the context acquired by the Kinect, and then translates safe guidance hint into...
Recent progress in design of antenna and antenna array by using MOEA/D-based optimization techniques in our group is summarized. We first give a brief introduction to framework of MOEA/D and several MOEA/D-based variants, including modified MOEA/D-DE (MOEA/D combined with differential evolution), MOEA/D-GO (MOEA/D combined with enhanced genetic operators), MOEA/D-GO-II (enhanced MOEA/D-GO), MOEA/D-SL...
In this paper, direction-of-arrival (DOA) estimation with unknown gain/phase errors is considered in the context of sparse representation technique. This problem is formulated in a conjugate Bayesian model, where both the signal and phase/gain error are modeled statistically. All the parameters are estimated iteratively to achieve sparsity. The proposed approach requires no prior on the number of...
String match has been widely used in such diverse areas as data compression, search engine, information retrieval. Due to its simplicity and high-efficient space, suffix array is used to improve the efficiency of string match. However, the existing suffix array-based algorithms will rebuild suffix array after window slides every time. According to the properties of sliding window, the concept of completed...
BES is a large internationally collaborative experiment, which produces more than 1PB of data every year. To meet the requirements of data storage and analysis, the BESGrid project has been launched. Data management is a very important part of BESGrid, and we designed and developed a large scale data management system. The system is responsible for storing a large amount of data, providing high-performance...
Technique of space-time adaptive processing (STAP), which is usually employed by airborne radar to reject the ground clutter and jamming and at the same time, detect the ground moving targets, can not estimate the spatial-temporal parameters of the corresponding targets. Monopulse technique, as a mature method for parameter estimation can be used on airborne radar, however, the estimation performance...
A comparison between the National Institute of Metrology (NIM) and the Beijing Institute of Radio Metrology and Measurement (BIRMM) Programmable Josephson Voltage Standards (PJVS) at 1 V level was carried out at Changping campus of NIM from November 16 to November 17, 2009. The measured difference voltage between the two PJVS is 2×10-10 in direct comparison and 4×10-9 in indirect comparison. The results...
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.