A5015457545- Astro and Planetary Science
- Spacecraft Dynamics and Control
- Advanced Wireless Communication Techniques
- Space Satellite Systems and Control
- Power Line Communications and Noise
- Wireless Communication Networks Research
- PAPR reduction in OFDM
- Planetary Science and Exploration
- Software System Performance and Reliability
- Heat shock proteins research
- RNA Interference and Gene Delivery
- Physiological and biochemical adaptations
- Balance, Gait, and Falls Prevention
- Robotic Path Planning Algorithms
- Liver Disease Diagnosis and Treatment
- Advanced Image and Video Retrieval Techniques
- Spacecraft Design and Technology
- Neuroscience and Neuropharmacology Research
- Private Equity and Venture Capital
- Advanced Vision and Imaging
- Data Mining Algorithms and Applications
- Adipose Tissue and Metabolism
- Image Processing Techniques and Applications
- Treatment of Major Depression
- Advanced Wireless Network Optimization
University of Liverpool
2024-2025
Sanjiang University
2025
Shanghai Jiao Tong University
2014-2024
University of Surrey
2020-2024
Zhongshan Hospital of Xiamen University
2022-2024
Fudan University
2022-2024
Tsinghua University
2024
Zhongshan Hospital
2024
University of Electronic Science and Technology of China
2014-2023
Xi'an Jiaotong University
2011-2023
In the future, robotic surgical assistants may assist surgeons by performing specific subtasks such as retraction and suturing to reduce surgeon tedium duration of some operations. We propose an apprenticeship learning approach that has potential allow autonomously execute trajectories with superhuman performance in terms speed smoothness. first step, we record a set using human-guided backdriven motions robot. These are then analyzed extract smooth reference trajectory, which at gradually...
Rapidly running arthropods like cockroaches make use of passive dynamics to achieve remarkable locomotion performance with regard stability, speed, and maneuverability. In this work, we take inspiration from these organisms design, fabricate, control a 10cm, 24 gram underactuated hexapedal robot capable at 14 body lengths per second performing dynamic turning maneuvers. Our design relies on parallel kinematic mechanisms fabricated using the scaled smart composite microstructures (SCM)...
This paper presents a set of innovative algorithms and system, named Log Master, for mining correlations events that have multiple attributions, i.e., node ID, application event type, severity, in logs large-scale cloud HPC systems. Different from traditional transactional data, e.g., supermarket purchases, system their unique characteristics, hence we propose several approaches to correlations. We parse into an n-ary sequence where each is identified by informative nine-tuple. enhanced...
Heat defense is crucial for survival and fitness. Transmission of thermosensory signals into hypothalamic thermoregulation centers represents a key layer regulation in heat defense. Yet, how these are transmitted the hypothalamus remains poorly understood. Here, we reveal that lateral parabrachial nucleus (LPB) glutamatergic prodynorphin cholecystokinin neuron populations progressively recruited to defend elevated body temperature. These two nonoverlapping types form circuits with downstream...
The nucleus accumbens (NAc) is the most promising target for drug use disorder treatment. Deep brain stimulation (DBS) of NAc effective However, mechanisms by which DBS produces its therapeutic effects remain enigmatic. Here, we define a behavioral cutoff criterion to distinguish depressive-like behaviors and non-depressive-like in mice after morphine withdrawal. We identified basolateral amygdala (BLA) D1 medium spiny neuron (MSN) pathway that controls Furthermore, paraventricular thalamus...
This paper addresses an optimal periodic training signal design for frequency offset estimation in frequency-selective multipath Rayleigh fading channels. For a fixed transmitted energy within fixed-length block, the structure (the locations of identical subblocks) and subblock are presented. The optimality is based on minimum Cramer-Rao bound (CRB) criterion. Based CRB joint channel, (optimality only estimation, not necessarily channel estimation) derived. obtained by using average...
We present a new initial ranging method for OFDMA systems such as IEEE 802.16-2004. First, orthogonal signal design is proposed by which an efficient, low-complexity multi-user detection developed. Based on the detector results, power estimation detected subscriber stations performed. Then, utilizing together with redundancy introduced cyclic prefixes, iterative timing offset estimator presented. Compared existing methods CDMA-type codes (in frequency-domain) defined in 802.16-2004, achieves...
As the sizes of supercomputers and data centers grow towards exascale, failures become normal. System logs play a critical role in increasingly complex tasks automatic failure prediction diagnosis. Many methods for are based on analyzing event large scale systems, but there is still neither widely used one to predict both non-fatal fatal events, nor precise that uses fine-grained information (such as type, node location, related application, time occurrence). A deeper more log analysis...
Abstract A novel high-order target phase approach (TPhA) for the station-keeping of periodic orbits is proposed in this work. The key elements TPhA method, phase-angle Poincare map and maneuver map, are constructed using differential algebra (DA) techniques to determine epochs calculate correction maneuvers. stochastic optimization framework tailored TPhA-based process leveraged search fuel-optimal error-robust parameters. Quasi-satellite (QSOs) around Phobos investigated demonstrate...
Abstract Financial fraud has a destructive effect on corporate reputation and market trust, it is necessary to choose effective technical means discriminative information identify enterprises involved in financial fraud. This paper constructs identification model based the XGBoost algorithm introduces non-financial variables discriminate The this paper, using algorithm, achieves 94.11% accuracy 50 seconds. Incorporating ESG analyze mechanism of company, found that company risk factors...
Abstract This study investigates the evolution of equilibrium points (EPs) in dynamical environment a rotating asteroid, parametrized with respect to single governing physical parameter. The polyhedral model is employed accurately represent asteroid’s gravity field, and corresponding equations motion are using general variable associated either spin rate or bulk density asteroid. A theorem established, demonstrating that EP sets derived from these two parametrizations...
We address the initial ranging process in OFDMA systems such as IEEE 802.16a. The proposed method includes three main tasks - timing estimation, multi-user code detection, and power estimation. All are performed based on a bank of correlators corresponding to codes. estimation scheme is peak correlator outputs. detection outputs an adaptive threshold. A novel threshold setting proposed. simple user-power estimator derived adjustment at random access users also which brings significant...
This letter studied the covert communication with help of cognitive jammer over an additive white Gaussian noise (AWGN) channel. The first senses Alice's transmission; then, based on its sensing results, it determines whether to transmit jamming signal. results showed that function does increase rate Alice Bob link while keeping eavesdropper, Willie, from detecting existence transmission.
We address joint estimation of frequency offsets and channel responses in OFDMA uplink. A cyclically equal-spaced, equal-energy interleaved pilot preamble is proposed by which two iterative estimators are developed. In the first estimator, we develop a modified SAGE (space alternating generalized expectation-maximization) method incorporating multiuser interference cancellation both time domains into method. The yields faster convergence rate, better performance, lower complexity than...
Fuzzy logical control is a robust and effective method in industrial fields, which renders it applicable to the attitude of solar sail. However, hard apply black-box time-varying problem as real sail control. Considering lack priori knowledge unacceptable manual workload design fuzzy controller (FLC), an intelligent FLC designer (IFLCD) developed by introducing neural network modelling automatic method. Besides, IFLCD also supports self-adaption for better accuracy. By applying proposed...
This brief presents a high-throughput low-complexity 512-point fast Fourier transform (FFT)/inverse (IFFT) processor for IEEE 802.11ad standard aiming at the wireless personal area network applications. To reduce complexity of twiddle factor multiplication, radix-2 <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">4</sup> -2 xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> FFT algorithm is...
The genomic signature of dog domestication reveals adaptation to a starch-rich diet compared with their ancestor wolves. Diet is key element shape gut microbial populations in direct way as well through coevolution the host. We investigated dynamics microbiota dogs when shifting from starch-rich, processed kibble nature-like raw meat diet, using wolves wild reference. Six healthy local zoo and six American Staffordshire Terriers were included. Dogs fed same commercial for at least 3 months...
We present a new initial ranging method for OFDMA systems such as IEEE 802.16a. First, orthogonal signal design is proposed by which an efficient, low-complexity multi-user detection developed. Based on the detector results, power estimation detected subscriber stations performed. Then, utilizing together with redundancy introduced cyclic prefixes, iterative timing offset estimator presented. Compared existing methods CDMA-type codes (in frequency-domain) defined in 802.16a, achieves better...
Heat-shock proteins (HSP) are molecular chaperones that play key roles in the maintenance of cellular homeostasis under variable environmental conditions. Although HSP frequently used studies wild vertebrates as indicators stress, no one to date has assessed responses HSP60, HSP70, and HSP90 same species different stressors. We studied changes circulating concentrations wild-caught House Finches (Haemorhous mexicanus) response multiple sequential stressful environments, including high...
In this paper, we empirically examine the impact of venture capital investment on dividend policy invested companies using a sample list from China’s ChiNext market during period 2014 to 2019. Our empirical results show that different types VC investments have impacts policies companies. To be specific, found independent (IVCs) promote company’s payment and increase level payments while corporate (CVC) inhibits payment. The joint participation multiple (syndication) also increases...