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Articles by X. Fang
Total Records ( 3 ) for X. Fang
  H Yao and X. Fang

H. Lin and H. Su classified AT-algebras of real rank zero. An AT-algebra often becomes an extension of an AT-algebra by an AF-algebra. In this paper, we define a new invariant pi(A) of C*-algebra A by partial isometries and give a necessary condition on which a C*-algebra is an AT-algebra. We demonstrate that there is an essential extension of an AT-algebra with real rank zero by K which is not an AT-algebra.

  X. Fang , C. Jacquemin , F. Vernier and B. Luo
  This study proposes a survey on it mainly around 2 functions units in the visualization pipeline: spatial layout and interaction. For the former, 4 layout styles (node-link, cluster, virtual widget and miscellaneous) and 2 augmentation types (focus+context, photo-realistic rendering) are introduced and, for the latter, 4 interaction styles of (3D walkthrough, filter, specification placement and annotation) and 2 augmentation types (multimedia and animation) are also suggested. In addition, 7 application areas are also provided to present some interesting findings study and future directions.
  C Wang , G Xie , B Cheng , L Du , L Shi , L Tan , Q Shu and X. Fang

Pediatric Risk of Mortality (PRISM), Pediatric Index of Mortality (PIM) and PIM2 could be applicable to the subset of term neonates has not been well investigated. The purpose of this study is to access and compare the performance of these scoring systems in predicting mortality probability in term Chinese neonates with critical illness. PRISM, PIM and PIM2 scores were calculated prospectively during a 1-year period on 243 neonates admitted to the neonatal intensive care unit (NICU) in the Children’s Hospital of Zhejiang University in China. Of these, 36 neonates (14.81%) died in the NICU, while the mortality rates estimated by PRISM, PIM and PIM2 were 16.19, 14.58 and 11.12%, respectively. The area under the receiver-operating characteristic (ROC) curve [95% confidence intervals (CIs)] were 0.834 (0.767–0.902), 0.851 (0.786–0.916) and 0.854 (0.790–0.918) for PRISM, PIM and PIM2, respectively. The Hosmer–Lemeshow test gave a chi-square of 1.35 (p = 0.930) for PRISM, 1.03 (p = 0.960) for PIM and 4.58 (p = 0.469) for PIM2. The standardized mortality rates (SMRs) (95% CI) using PRISM, PIM and PIM2 were 0.92 (0.79–1.08), 1.02 (0.88–1.20) and 1.33 (1.13–1.62), respectively. Although PRISM, PIM and PIM2 have displayed good discrimination and calibration in the present setting, PIM is considered as the most accurate and appropriate tool for predicting mortality in the studied NICU.

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