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Power attack is an important side-channel attack (SCA) method based on the correlation between measured power profile and internal switching activities. Various techniques have been proposed to prevent power attack. It has been noted that the on-chip power grid (PG) has a vital effect on the effectiveness of power attack by inducing a noise in the power profile. However, there is a lack of study on...
Attenuated total reflection spectroscopy with tapered fibers is combined to coherent multi-heterodyne spectroscopy in the near-infrared region. Evanescent sensing is extended to broadband high-resolution spectroscopy in the gas phase at high signal-to-noise ratio.
This paper investigates a high power factor switch-based wireless power transfer front-end circuit for heterogeneous systems. This circuit uses an integrated switching rectifier, implemented in 0.18um 1.8V/5V CMOS process. An integrated pair of phase synchronizers is used to align the waveshape of a wirelessly-coupled sinusoidal voltage source in the receiving coil to the corresponding conducting...
In order to simulate the varied kinds of current and meet the acquirement on the different power, this paper proposes a multifunctional DC electronic load. The proposed DC electronic load is composed of many cascaded current simulation units. The number of units is according to the input power rating. Each unit is based on the combination of buck and boost converter, which is able to simulate both...
By using the manual welding method, a capillary-based extrinsic Fabry-Perot structure is demonstrated for strain sensing. It is found that strain sensitivity increases as the length of the capillary becomes shorter and the inner diameter of the capillary gets larger.
A novel and compact cone-shaped in wall coupler is demonstrated to excite the whispering gallery modes, which is fabricated with a single mode fiber and a capillary possessed by the chemical etching method, with a microsphere inserted into the end of the etched capillary, to observe the Fano resonances potential for sensors and switches.
This paper presents a computer-aided system for automatic diagnosis of cirrhosis based on ultrasound images. We first propose a dynamic programming algorithm to automatically extract the liver capsule, and then the continuity and smoothness of capsule serve as an important guideline for image classification. Via the decomposition of the ultrasound image in spatial and gray scales, the density and...
An effective optimization approach for the electromigration (EM) reliability in power grid (PG) has been presented in this paper. With core technology development and the key feature size of integrated circuits decreasing, it is more serious for the EM-induced failure occurrence in the entire PG. However, previous PG studies focus on supply noise optimization and neglect the EM influence in lines,...
A Mach-Zehnder and Michelson Hybrid (M2) interferometer is promoted to measure backreflection of modes at the hollow-core photonic bandgap fiber (HC-PBF) terminations. The results show that compared to the incident light intensity into the HC-PBF, the modes reflectivity is less than −80 dB at the flat termination, and it is about −90 dB for the fundamental modes.
Real-time absorption and dispersion dual-comb spectroscopy is achieved in the 3-μm region without mode-locked lasers or active stabilization. The resolved lines of flat-top frequency combs with adjustable line-spacing and tunable center wavelength enable precise spectroscopy.
Many real-world machine learning applications involveseveral learning tasks which are inter-related. For example, in healthcare domain, we need to learn a predictive model of a certain disease for many hospitals. The models for each hospital may be different because of the inherent differences in the distributions of the patient populations. However, the models are also closely related because of...
In order to make received radar echo take maximum targets information under multiple targets' circumstance, the information theoretical approach for designing transmit waveform is utilized. Firstly, it deduces the relationship between transmitting waveform and multi-target mutual information in two conditions. One condition is radar echo with only noise background and the other is with clutter in...
In order to improve the inefficiency of two-dimensional graphical displaying for the beam scheduling process of phased array radar, a new approach to three-dimensional visualization for radar simulation is proposed. It describes the geometric principles involving radar searching beam, tracking beam, power range and other objects' model constructions in 3D scene, and then analyzes referential relationships...
Image segmentation is one of the basic problems in the field of image processing, and this topic is not only a key technology among automatic target identification technologies, but also the basis of target feature extraction, tracking and image recognition. During the process of image segmentation, we will meet several problems, and we always make mistakes because of uneven illumination, influence...
X-ray phase contrast imaging (XPCI) shows more detail and capable to produce high contrast images compared to conventional absorb contrast imaging. Not as free-space-propagation-based XPCI which needs a highly coherent and monochromatic light source such as synchrotron radiation source, several different XPCI methods are practical using desktop X-ray tube, such as micro-focus PCI, grating-based differential...
The human-computer cooperative approaches for handling the combinatorial optimization problems are introduced. In this paper we propose the human-computer cooperation approach for combinatorial optimization problems. Firstly, the initial solutions are seen as the sampling in human cognition by computer games. The games are developed for special combinatorial optimization problems. Then fuzzy decomposition...
Key-phrase extraction has been a major problem in the text mining field. With the widespread use of Internet, it has become increasingly important to obtain key information from the vast amounts of information. The paper takes the phrases at lower level than the sentences as expressive elements of semantic meaning, because the phrases contain richer information particle size of semantic meaning and...
Eletrochemical corrosion properties of Cu and Ag in the aqueous solutions of reducing agents of formic acid, glycol and ascorbic acid with various concentrations were examined respectively. Experimental results show that there exists no passivation stage on the polarization curves of Cu and Ag in those reductive solutions. Ascorbic acid corrodes Ag faster than the otherss, while formic acid is most...
Based on the measurement fusion algorithm, a fractional order Kalman fuser is presented for the multisensor linear discrete time-varying fractional state-space systems with different measurement matrices and uncorrelated noises. It is rigorously proved that the fuser is numerically identical to the centralized fusion fractional order Kalman estimator, so that it has the global optimality. The simulation...
Multiheterodyne frequency comb spectroscopy without mode-locked lasers is reported in the near-infrared C and L telecommunication bands. The system without active stabilization combines high signal-to-noise ratio, rapid tuning and moderate multiplex spectral span.
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