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.
Two‐dimensional (2D) materials, benefitting from their unique planar structure and various appealing electronic properties, have attracted much attention for novel electronic and optoelectronic applications. As a basis for practical devices, the study of micro/nano‐2D material arrays based on coupling effects and synergistic effects is critical to the functionalization and integration of 2D materials...
The speed of the target can be estimated by the sound pressure cross-correlation of the line spectrum of the moving target at different time intervals. However, a slight deviation of the line spectrum has a significant influence on the estimated result. In this paper this phenomenon is analyzed from the theory, then the speed of the target is estimated when the line spectrum is biased. Experimental...
It is necessary to study the spatial evolution of clusters in massive multiple-input multiple-output (MIMO) mobile channel, which is one of the important features in cluster-based models. In this paper, we analyze the data collected from the massive MIMO mobile measurement campaign, with a 256-element virtual array at 3.5 GHz in line of sight (LoS) and non line of sight (NLoS) conditions, respectively...
As a traditional algorithm, the string match meets a challenge with the development of the massive volume of data be-cause of gene sequencing. Surveys show that there will be a huge amount of short read segments during the process of gene sequencing and the need for a highly efficient is urgent. The BWA is an effective algorithm to deal with the short read mapping. Compared with other short read mapping...
This paper shows the variation of clusters with the increasing number of antennas. The data was collected from the massive MIMO mobile measurement at 3.5 GHz, in line of sight (LoS) and non line of sight (NLoS) conditions, respectively. And the virtual measurement method is used to form the 64-element, 128-element and 256-element virtual antenna array from the 32-element antenna array. After estimating...
In reconfigurable computing, more tasks could be executed in parallel on the limited hardware resources by time multiplexing. Finding the available start time and appropriate placement position for arrival tasks is the key point of online reconfigurable scheduling. In this paper, we introduce an online scheduling algorithm with reconfigurable resource management. Vertex position tree — a new date...
The Smith-Waterman is one of the most popular algorithms in the molecular sequence alignment. It is often used to find the best local alignment between two strings by calculating the similarity score of the pair of strings. The algorithm is of great potential to be parallelized and has been employed by a lot of FPGA-based solutions, mostly with the systolic array manner. However, the architecture...
Combining the static feature and the dynamic path in consecutive image array of small targets, this paper proposes a detecting method for small targets in sonar image: Improving the selection of (SRG) seeded region growing method, and defining the size of searching sub window, this paper realizes the selection of suspected targets in single image that have certain SRR (signal-to-reverberation ratio),...
Phase detection and behavior analysis have been major concerned to improve the performance as well as the system throughputs. However, for the distributed acceleration engines, the execution among different phases is much more difficult to be analyzed, especially for the loop based programs. With respect to the tasks in different iterations, how to efficiently detect the phases belonging to the same...
We propose and demonstrate a low-cost all-optical passive spectral filter that exhibits a high-resolution periodic sawtooth spectral pattern and its application to fast sensitive interrogation of a fiber Bragg grating sensor array.
As the prevalence of broadband coherent sources, a novel algorithm for the direction of arrival (DOA) estimation of coherent signals based on DPT and virtual array is introduced. And one of the algorithms is to be done a comparison, analysis and improvement. It can settle the problem of not finding coherent signals in routine algorithm. This approach can estimate accurately and do not decrease effective...
In this paper, we propose a method to detect the wake-up-word (WUW) using microphone array for human-robot interaction. The consistency of the spatial eigenspaces formed by the speech source at different frequencies and the resonant curve similarity of the WUW are used as the features for detection. These features are processed and detected separately and the result is determined by cascading individual...
This article proposes a concept of dynamic profiling reconfigurable instruction set processor (RISP) and related retargetable tool chain support. The tool chain consists of a profiler, a code map per, and a retargetable compiler. Firstly dynamic profiler is employed to obtain hot path for applications. Then hot block is implemented in reconfiguration logic units. After newly designed hardware block...
Vast marine area possesses over 3/4 of the global surface, where human activities occur more and more. Over 90% of imported crude oil in China is transported by oil tankers, which comprise the main part of vessel fleets in the China seas. Fishery is another human activity in the oceans, which is related to resource management and EEZ protection. Both maritime traffic and fishery law enforcement need...
The traditional CED (Complex Event Detection) methods were achieved in memory by creating a data structure. But the memory will become a choke-point for the huge data structure when orienting long process and numerous data. So large amounts of data must be stored in external memory, and transferred to memory when needed. In this paper, we present TSH (Hash by object ID based on time slice model) storage...
Current clinical PET with 4-6 mm intrinsic resolution (6-9 mm practical) limits many important brain studies. The objective of this study is to use our existing technology for realizing an ultrahigh resolution high-sensitivity PET with a lower cost for neuroimaging. This proposed neuro-PET has a 54-cm detector ring diameter, a large 21-cm axial field of view (AFOV) for capturing the whole brain and...
The effect of the number of the shorting vias on the power integrity of multi-layered structures has been demonstrated in this paper. Following that, an empirical design rule for the fewest number of the shorting vias is proposed to maintain the original power integrity and reduce the cost at the same time. For validation, the design concept is also realized in a real package structure at last.
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.