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Malware detection has been a difficult problem for a very long time. Since the wide use of smart devices in recent years, the number of malwares is increasing rapidly. Most existing methods for malware detection rely too much on manual interventions (e.g. pre-defined features and patterns), which can be easily deceived. In this paper, we propose a novel end-to-end deep learning model to detect Android...
The aircraft is a common type of target in the inverse synthetic aperture radar (ISAR) imaging. The size is a key parameter for aircraft recognition whereas it cannot be obtained directly from the ISAR image where the cross-range resolution is not easy to get. Cross-range scaling approaches should be developed. However, some aircrafts are equipped with large propellers whose echoes may induce the...
In ISAR imaging, it is likely to happen that multiple observed targets are so close to each other that there may be two or more targets located in the same radar antenna beam. Since the movements of varied targets may not be the same, using the imaging algorithm for single target will blur the image. Isolating these targets and imaging them separately is a good way to solve this problem. In this paper,...
Shipborne inverse synthetic aperture radar (ISAR) imaging is in imperious demands with warfare at sea tending to be the key battle field in the future. Simulations of ship-borne ISAR imaging with the traditional Range-Doppler Algorithm (RDA) are studied when ships are yawing, pitching and rolling are studied. The final image quality deteriorates with increasing motion amplitude and reducing motion...
In ISAR imaging, it is likely that multiple observed targets are so close to each other that there may be two or more targets located in the same radar antenna beam. Since the movements of varied targets may not be the same, using the imaging algorithm for single target will blur the image. Isolating these targets and imaging them separately is a good way to solve this problem. In this paper, a method...
Pointing at the problem that the spares consumption quota has been using the experience to develop, which makes spares application random and blind, this paper puts forward to build the reasonable lifeless-repairable spares consumption quota model. Analyze and determine the factors influencing the lifeless-repairable spares consumption, use BP neural network to predict, and use genetic algorithm to...
Aiming at improving the accuracy of identifying pin attribute of unknown logic device, the paper analyses the signal timing relationship and signal logic corresponding relationships. A method, which is comprised of identifying algorithm and amending algorithm based on time-delay field, is proposed. The experimental results show that the method can improve the correct rate of the identifying pin attribute.
Append-only file systems, with which data can only be updated in an append-only manner, are of great importance to the regulatory compliance requirements for storing immutable data. However, existing approaches fail to provide the verifiability of the append-only property of the file system in the presence of an inside attacker who can manipulate on-disk data directly, and thus are unsuitable for...
The study the age-related changes of hippocampus is an important issue in neuroscience. Here, we established the methodology of analyzing 18F-FDG brain PET images based on functional connectivity, and studied the age-related changes of functional networks in hippocampus detected by this method. 195 healthy volunteers were divided into 4 groups by age and were scanned in a resting state. The functional...
Aiming at the technique crux of system failure testing and function reconstruction, we carry on a research to the distilling method of the Boolean relation data. First, start with the analysis to the working wave character of target chip in the waveform confined space of system, and then on this foundation, the corresponding logic relation expression between signals of different logic types is given...
The premise of achieving the reverse PLD (programmable logic device) analysis is to identify the pin types by adopting the method of on-board analysis. How to rapidly and accurately identify all pin types is the key problem. Based on theoretical analysis to inherent relationships about data changes among various types of pins, a highly efficient fixed rate algorithm is brought out to identify pin...
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