Xu Yuan xin

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  • SU Jin-Shu, ZHANG Bo-Feng, XU Xin
  • 2006
In recent years, there have been extensive studies and rapid progresses in automatic text categorization, which is one of the hotspots and key techniques in the information retrieval and data mining field. Highlighting the state-of-art challenging issues and research trends for content information processing of Internet and other complex applications, this(More)
Markers of cardiac dysfunction such as amino terminal pro-brain natriuretic peptide (NTpro-BNP) and high sensitivity cardiac troponin T (hs-cTnT) may be associated with dementia. However, limited data exist on their association with either pre-dementia stages, that is, cognitive impairment no dementia (CIND), or the burden of cerebrovascular diseases(More)
INTRODUCTION This is the first study to assess cerebral microinfarcts (CMIs) on 3 tesla (3T) magnetic resonance imaging (MRI) in a memory clinic population. METHODS We included 238 consecutive patients (aged 72.5 ± 9.1 years) from a memory clinic in Singapore. All patients underwent extensive neurological and neuropsychological testing and 3T MRI on the(More)
We discuss the dynamic bandwidth allocation schemes in TDMA uplink channel of satellite networks. And a scheme based on max-min fairness is discussed and implemented in Tdma-bod simulator of ns-2. Simulation results show that this scheme can improve the throughput and delay performance and provide better QoS for satellite system. And in future network(More)
In this paper, a novel implementation of a portable positioning system based on system-on-a-programmable chip (SOPC) technology is proposed. SOPC technology integrates a CPU, memory, I/O interface on a single FPGA that makes this system have many advantages such as portability, high performance to price ratio, low cost, easy to update and so on. Due to the(More)
INTRODUCTION The Stroke and Cognition consortium (STROKOG) aims to facilitate a better understanding of the determinants of vascular contributions to cognitive disorders and help improve the diagnosis and treatment of vascular cognitive disorders (VCD). METHODS Longitudinal studies with ≥75 participants who had suffered or were at risk of stroke or TIA(More)
OBJECTIVE Temporal lobe epilepsy (TLE) with hippocampal sclerosis has widespread effects on structural and functional connectivity and often entails cognitive dysfunction. EEG is mandatory to disentangle interactions in epileptic and physiological networks which underlie these cognitive comorbidities. Here, we examined how interictal epileptic discharges(More)
Cortical thickness has been suggested to be one of the most important markers of cortical atrophy. In this study, we examined potential risk factors of cortical thickness and its association with cognition in an elderly Asian population from Singapore. This is a cross-sectional study among 572 Chinese and Malay patients from the ongoing Epidemiology of(More)
It is necessary to correct data of supercritical airfoil for sidewall boundary-layer effects in transonic wind tunnel, thus investigating the aerodynamic characteristics of supercritical airfoil perfectly. In this paper, NASA SC (2)-0714 airfoil was numerically simulated with chosen grids, and compared with corrected EFD results. The Barnwell-Sewell(B-S)(More)