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Functional connectomes (FCs) are powerful in characterizing brain conditions. Temporal FC metrics can index changes in macroscopic neural activity patterns underlying critical aspects of cognition and behavior. However, time-varying properties of temporal brain networks in general mental disorders have been less investigated. In this paper, FCs derived from resting-state fMRI (R-fMRI) data are temporally...
Energy efficiency has gradually become an important factor for improving the user experience of smartphones. Many background applications continue to consume energy without users' awareness, because these applications use wakelock to prevent the device from going to sleep state, while such misused will cause no-sleep bugs. In this paper, a framework for sensing wakelock application and mining users'...
Bidirectional dc-dc converter is an important part of battery energy storage to efficiently control the power flow in or out of the battery. Due to the limited stored energy, it is very important to maximize the amount of deliverable energy to the load by minimizing the losses in the power conversion. In this paper, the proposed high efficiency bidirectional DC-DC converter is based on series resonant...
One of the major concerns in developing three-dimensional (3D) electric field sensor (EFS) is its susceptibility to cross-axis coupling interference. The output signal for each sensing axis of a 3D EFS is properly coupled by electric field components from other two orthogonal sensing axes. In this paper, a novel electric field microsensor with low cross-axis coupling interference is presented. The...
A novel compact broadband antenna is proposed in this letter. This idea is based on the traditional antenna printed dipole which is applied in many areas. The proposed antenna is consisted of microstrip barron line, ground plane, two oscillator arms and an inverted-L-shape feeder. This antenna is smaller compared to the conventional antenna, but it can reach the better performance. Through the simulation...
Developing a test environment for smart grid forms an indispensable stage to the realization of the next generation of the electricity grid. The coupling of the physical power system and its associated communication network makes modern power grid a typical cyber-physical system. In this paper, a real-time power system was simulated in RTDS and the communication network in NS-3. This test bed includes...
With the rapid increase in the number of integrated circuits I/O, the traditional wire bonding package has been unable to meet the high I/O number of interconnection needs, flip-chip process can undoubtedly solve the high I/O number of miniaturization package problems, especially flip-chip plastic package can fundamentally meet the increasing number of pins, improve speed and high frequency performance,...
The Moon-based Extreme Ultraviolet Camera (EUVC) installed on the lunar lander of Chinese Chang'e 3 mission can obtain global and instantaneous EUV images of the Earth's plasmasphere in meridian view (side view). The movies of the continuously observed time-series images by EUVC reveal the dynamic variations of the plasmasphere during substorms. The EUVC instrument, observations of plasmasphere, data...
There are many problems in the current massive open courses (MOOC) platform construction, such as high cost, high energy consumption, long construction period and poor reusability. In order to solve the above problems, a new platform construction schema of MOOC+Small Private Online Course (SPOC) based on Internet Data Center(IDC) is proposed. This platform can help users to quickly create their own...
Surface charges accumulated on insulating film will change the electric field around the insulating film, and the surface charge distribution has direct relationship with the electric field around. In order to investigate the surface charge characteristics of insulating film in ion-flow field, an experimental platform was designed, which contained a charge generating apparatus, an electrometer and...
Large-scale disasters (such as earthquake, flood, tornado) may cause severe network failures, leading to massive disruptions and data loss. Particularly, the aftermaths of disasters may further threaten the residual network and impact the existing/survived service connections. In this paper, we study a reliability based restoration scheme for recovering the impacted (disrupted and/or reliability-decreased)...
Butting and inserted pickup layout in MOSFETs leads to substrate resistance shunting effect and serious ESD robustness degradation. This work develops novel layout with external well/ diffusion resistance embedding between the substrate and the grounding terminal in the NMOS transistors. This layout method can greatly enhance ESD performance of the inserted pickup devices. The second breakdown current...
Images are formed by counting how many photons traveling from a given set of directions hit an image sensor during a given time interval. When photons are few and far in between, the concept of image breaks down and it is best to consider directly the flow of photons. Computer vision in this regime, which we call scotopic, is radically different from the classical image-based paradigm in that visual...
LDPC still receives extensive attention in the field of channel coding because of its superior error correction performance, high throughput and low decoding complexity. Considering the poor adaptability and limited expansibility of traditional LDPC decoder, a design method of LLR-BP decoder based on adaptive code length is proposed. A partial parallel LDPC decoder structure is designed under the...
The Sparsity Adaptive Matching Pursuit (SAMP) algorithm needs not to know a priori information of sparsity, which makes it has unique advantages compared to other greedy algorithms. In the reconstruction process, the step size can be changed with stage, which increases its reconstruction accuracy. Aiming at the step size of SAMP, it is unreasonable, will only increase and it is not decrease properly...
Based on the traffic accident data of Beijing China in 2012, we combined with a variety of municipal administration data, used the geographically weighted regression (GWR) method to study spatial non-stationarity and heterogeneity of the traffic accidents, and analyzed the causes of space regional in traffic accident black spots. Experimental results demonstrated that: (1) The GWR model detects change...
The paper is concerned with the target tracking in range-only wireless sensor networks (WSNs). To integrate the separated measurements from the WSN, a sequential fusion estimation method is presented in the sense of linear minimum mean squared error (LMMSE). Moreover, the un-scented transformation is used to implement the recursion of means and covariances, and this kind estimator is termed as sequential...
Sheet music has long been regarded as one of the most effective medias for musicians, music players, and amateurs to communicate with each other. It is also an intuitive way for non-professionals to learn how to play a musical instrument or sing a song. However, not all composers have willingness to share their own sheet music, especially those protected by strict copyright regulations. For amateurs...
The distributed fusion filtering problem is addressed for stochastic uncertain systems with correlated noises, multi-step transmission delays and packet dropouts. Stochastic uncertainties in the state equation and measurement equation, one-step auto-correlated and cross-correlated noises as well as multi-step delays described by some Bernoulli distributed random variables are simultaneously considered...
Through the analysis for the current urban road network and the urban traffic control schemes, establish the model of the average of vehicle up-time in road network. Then, by use for reference thinking of natural selection of genetic algorithm improved the minimum value problem of particle swarm optimization algorithm. Hereafter, the model was optimized by the improved particle swarm optimization,...
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