Objective To investigate the epidemic characteristics of hepatitis A during 2004-2009 in Hubei province,so as to provide evidence for the prevention and control of infectious diseases.Methods According to the theory of grey system,the grey forecasting model was applied,the accuracy of the model and the range of forecasting value were tested.Results It was predicted that the incidence rate of viral hepatitis A was declining in 2010.Conclusion The predictive equation of grey relational analysis is possible and advisable,which can be helpful for disease control departments and hospitals to take effective actions to prevent disease.

Grey Literature

Grey relational analysis

Viral Hepatitis

Disease Control

Source

Cite

Citations (0)

Possible Gigantic Structures of All-Sky Rich Cluster

Xiaoyang Xia Zugan Deng Yongzheng Liu

Source

Cite

Citations (0)

LARGE-SCALE DISTRIBUTION OF GALAXIES WITH DIFFERENT LUMINOSITIES

Xiaoyang Xia Zugan Deng Youyuan Zhou

Based on the data of CfA redshift survey, the spatial 2-point correlation function ofgalaxies with different luminosities has been analysed and the results have been comparedwith those in literature. It is found that galaxies with different luminosities have obvious dif-ferences in their large-scale distribution. Although all the correlation functions can be appro-ximated by the power law, the absolute values of the power indices, clustering strength andclustering scales increase with the luminosity of galaxies. Further investigation of the large-scale distribution of galaxies with different luminosities will set new constraints on the dis-tribution of matter in the universe and the origin and evolution of galaxies.

10.1360/ya1989-32-6-716

Cite

Citations (0)

HI content of massive red spiral galaxies observed by FAST

arXiv (Cornell University) (2022)

Lan Wang Zheng Zheng Cai-Na Hao Rui Guo Ran Li

A sample of 279 massive red spirals was selected optically by Guo et al. (2020), among which 166 galaxies have been observed by the ALFALFA survey. In this work, we observe HI content of the rest 113 massive red spiral galaxies using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). 75 of the 113 galaxies have HI detection with a signal-to-noise ratio (S/N) greater than 4.7. Compared with the red spirals in the same sample that have been observed by the ALFALFA survey, galaxies observed by FAST have on average a higher S/N, and reach to a lower HI mass. To investigate why many red spirals contain a significant amount of HI mass, we check color profiles of the massive red spirals using images observed by the DESI Legacy Imaging Surveys. We find that galaxies with HI detection have bluer outer disks than the galaxies without HI detection, for both ALFALFA and FAST samples. For galaxies with HI detection, there exists a clear correlation between galaxy HI mass and g-r color at outer radius: galaxies with higher HI masses have bluer outer disks. The results indicate that optically selected massive red spirals are not fully quenched, and the HI gas observed in many of the galaxies may exist in their outer blue disks.

10.48550/arxiv.2208.10084

Cite

Citations (0)

Measure of Behavioral Intentions Toward Bisexual People

PsycTESTS Dataset (2021)

Xiaoyang Xia

10.1037/t78951-000

Cite

Citations (0)

Highly efficient co-doped blue phosphorescent organic electroluminescent devices due to improved carriers balance and broadening recombination zone

Synthetic Metals (2024)

Bo Li Rongzhen Cui Xin Qiao Zhongzhi Wang Xiaoyang Xia

Charge carrier

10.1016/j.synthmet.2024.117576

Cite

Citations (0)