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Search Results: 1 - 10 of 127153 matches for " LI Xingming "
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An analysis of hospital preparedness capacity for public health emergency in four regions of China: Beijing, Shandong, Guangxi, and Hainan
Xingming Li, Jianshi Huang, Hui Zhang
BMC Public Health , 2008, DOI: 10.1186/1471-2458-8-319
Abstract: Four hundred hospitals in four city and provinces of China were surveyed using a standardized questionnaire. Data related to hospital demographic data; PHE preparation; response to PHE in community; stockpiles of drugs and materials; detection and identification of PHE; procedures for medical treatment; laboratory diagnosis and management; staff training; and risk communication were collected and analyzed.Valid responses were received from 318 (79.5%) of the 400 hospitals surveyed. Of the valid responses, 264 (85.2%) hospitals had emergency plans; 93.3% had command centres and personnel for PHE; 22.9% included community organisations during the training for PHE; 97.4% could transport needed medical staff to a PHE; 53.1% had evaluated stockpiles of drugs; 61.5% had evaluated their supply systems; 55.5% had developed surveillance systems; and 74.6% could monitor the abnormity(See in appendix). Physicians in 80.2% of the analyzed hospitals reported up-to-date knowledge of their institution's PHE protocol. Of the 318 respondents, 97.4% followed strict laboratory regulations, however, only about 33.5% had protocols for suspected samples. Furthermore, only 59.0% could isolate and identify salmonella and staphylococcus and less than 5% could isolate and identify human H5N1 avian flu and SARS. Staff training or drill programs were reported in 94.5% of the institutions; 50.3% periodically assessed the efficacy of staff training; 45% had experts to provide psychological counselling; 12.1% had provided training for their medical staff to assess PHE-related stress. All of the above capacities related to the demographic characteristics of hospitals and will be discussed in-depth in this paper.Our survey suggested that, at the time of the survey, hospital preparedness for PHE in China was at an early stage of development. Comprehensive measures should be taken to enhance hospital capacity in the prevention and management of PHE.Public health emergency (PHE) is an event or events
Image Integrity Authentication Scheme Based On Fixed Point Theory
Xu Li,Xingming Sun,Quansheng Liu
Computer Science , 2013,
Abstract: Based on fixed point theory, this paper proposes a new scheme for image integrity authentication, which is different from Digital Signature and Fragile Watermarking. A realization of the new scheme is given based on Gaussian Convolution and Deconvolution (GCD) functions. For a given image, if it is invariant under a GCD function, we call it GCD fixed point image. An existence theorem of fixed points for GCD functions is proved and an iterative algorithm is presented for finding fixed points. Experiments show that GCD fixed point images perform well in transparence, fragility, security and tampering localization.
The expression profile of genes in rice roots under low phosphorus stress
LiHua Li,XuHua Qiu,XiangHua Li,ShiPing Wang,XingMing Lian
Science China Life Sciences , 2009, DOI: 10.1007/s11427-009-0137-x
Abstract: Phosphorus (P) is one of the most essential macronutrients required for plant growth. Although it is abundant in soil, P is often the limiting nutrient for crop yield potential because of the low concentration of soluble P that plants can absorb directly. The gene expression profile was investigated in rice roots at 6, 24 and 72 h under low P stress and compared with a control (normal P) profile, using a DNA chip of 60000 oligos (70 mer) that represented all putative genes of the rice genome. A total of 795 differentially expressed genes were identified in response to phosphate (Pi) starvation in at least one of the treatments. Based on the analysis, we found that: (i) The genes coding for the Pi transporter, acid phosphatase and RNase were up-regulated in rice roots; (ii) the genes involved in glycolysis were first up-regulated and then down-regulated; (iii) several genes involved in N metabolism and lipid metabolism changed their expression patterns; (iv) some genes involved in cell senescence and DNA or protein degradation were up-regulated; and (v) some transmembrane transporter genes were up-regulated. The results may provide useful information in the molecular process associated with Pi deficiency and thus facilitate research in improving Pi utilization in crop species.
Pediatric first aid knowledge and attitudes among staff in the preschools of Shanghai, China
Feng Li, Fan Jiang, Xingming Jin, Yulan Qiu, Xiaoming Shen
BMC Pediatrics , 2012, DOI: 10.1186/1471-2431-12-121
Abstract: A cross-sectional study was carried out among the staff members at selected preschools. A stratified random sampling method was first used to identify suitable subjects. Data were obtained using a multiple-choice questionnaire. A standardized collection of demographics was performed and participants were given the aforementioned questionnaire to indicate knowledge of and attitudes toward first aid.1067 subjects completed the questionnaire. None of the surveyed employees answered all questions correctly; only 39 individuals (3.7%) achieved passing scores. The relative number of correct answers to specific questions ranged from 16.5% to 90.2%. In particular, subjects lacked knowledge regarding first aid for convulsive seizures (only 16.5% answered correctly), chemical injuries to the eye (23%), inhaled poison (27.6%), and choking and coughing (30.1%). A multiple linear regression analysis showed scores were significantly higher among staff members with more education, those who had received first aid training before or were already healthcare providers, younger employees, and staff members from rural districts. Most employees agreed that giving first aid was helpful; the vast majority felt that it was important and useful for them to learn pediatric first aid.The level of first-aid knowledge among preschool staffs in Shanghai was low. There is an urgent need to educate staff members regarding first aid practices and the various risk factors relating to specific injuries.Injuries and accidents are the leading causes of death in children worldwide [1]. Children are prone to unintentional injuries [2] and are at a higher risk of experiencing injuries, because their bodies are developing and they have not yet learned to be aware both of themselves and various environmental dangers. Because children spend a significant portion of their day in child-care centers, pediatric emergencies such as the exacerbation of existing medical conditions or accidental physical injuries ar
Suppression of glutamate synthase genes significantly affects carbon and nitrogen metabolism in rice (Oryza sativa L.)
YongEn Lu,Feng Luo,Meng Yang,XiangHua Li,XingMing Lian
Science China Life Sciences , 2011, DOI: 10.1007/s11427-011-4191-9
Abstract: Rice (Oryza sativa) glutamate synthase (GOGAT, EC 1.4.1.14) enzymes have been proposed to have great potential for improving nitrogen use efficiency, but their functions in vivo and their effects on carbon and nitrogen metabolism have not been systematically explored. In this research, we analyzed transcriptional profiles of rice GOGAT genes using a genome-wide microarray database, and investigated the effects of suppression of glutamate synthase genes on carbon and nitrogen metabolism using GOGAT co-suppressed rice plants. Transcriptional profiles showed that rice GOGAT genes were expressed differently in various tissues and organs, which suggested that they have different roles in vivo. Compared with the wild-type, tiller number, total shoot dry weight, and yield of GOGAT co-suppressed plants were significantly decreased. Physiological and biochemical studies showed that the contents of nitrate, several kinds of free amino acids, chlorophyll, sugars, sugar phosphates, and pyridine nucleotides were significantly decreased in leaves of GOGAT co-suppressed plants, but the contents of free ammonium, 2-oxoglutarate, and isocitrate in leaves were increased. We conclude that GOGATs play essential roles in carbon and nitrogen metabolism, and that they are indispensable for efficient nitrogen assimilation in rice.
MIMIC-PPT: Mimicking-Based Steganography for Microsoft Power Point Document
Yuling Liu,Xingming Sun,Yongping Liu,Chang-Tsun Li
Information Technology Journal , 2008,
Abstract: Communications via Microsoft Power Point (PPT for short) documents are commonplace, so it is crucial to take advantage of PPT documents for information security and digital forensics. In this study, we propose a new method of text steganography, called MIMIC-PPT, which combines text mimicking technique with characteristics of PPT documents. Firstly, a dictionary and some sentence templates are automatically created by parsing the body text of a PPT document. Then, cryptographic information is converted into innocuous sentences by using the dictionary and the sentence templates. Finally, the sentences are written into the note pages of the PPT document. With MIMIC-PPT, there is no need for the communication parties to share the dictionary and sentence templates while the efficiency and security are greatly improved.
Study Progress of Intergeneric Hybridization between Chicken and Quail
Xingming Li,Du Liang,Jincheng Zhang,Herong Liao
International Journal of Biology , 2010, DOI: 10.5539/ijb.v2n1p123
Abstract: In the present paper, we reviewed intergeneric hybridization between chicken and quail from four aspects, such as morphology, molecular genetics, sex identification of earlier embryos and prospects, summarized the recent research progress from the scholars at home or abroad, and aimed to attract more and more attention to intergeneric hybridization between chicken and quail, offer more space and room for other researchers to consider and develop, and lay a foundation for the exploitation, protection and utilization of China genetic resources.
FPGA Accelerator for Wavelet-Based Automated Global Image Registration
Baofeng Li,Yong Dou,Haifang Zhou,Xingming Zhou
EURASIP Journal on Embedded Systems , 2009, DOI: 10.1155/2009/162078
Abstract: Wavelet-based automated global image registration (WAGIR) is fundamental for most remote sensing image processing algorithms and extremely computation-intensive. With more and more algorithms migrating from ground computing to onboard computing, an efficient dedicated architecture of WAGIR is desired. In this paper, a BWAGIR architecture is proposed based on a block resampling scheme. BWAGIR achieves a significant performance by pipelining computational logics, parallelizing the resampling process and the calculation of correlation coefficient and parallel memory access. A proof-of-concept implementation with 1 BWAGIR processing unit of the architecture performs at least 7.4X faster than the CL cluster system with 1 node, and at least 3.4X than the MPM massively parallel machine with 1 node. Further speedup can be achieved by parallelizing multiple BWAGIR units. The architecture with 5 units achieves a speedup of about 3X against the CL with 16 nodes and a comparative speed with the MPM with 30 nodes. More importantly, the BWAGIR architecture can be deployed onboard economically.
FPGA Accelerator for Wavelet-Based Automated Global Image Registration
Li Baofeng,Dou Yong,Zhou Haifang,Zhou Xingming
EURASIP Journal on Embedded Systems , 2009,
Abstract: Wavelet-based automated global image registration (WAGIR) is fundamental for most remote sensing image processing algorithms and extremely computation-intensive. With more and more algorithms migrating from ground computing to onboard computing, an efficient dedicated architecture of WAGIR is desired. In this paper, a BWAGIR architecture is proposed based on a block resampling scheme. BWAGIR achieves a significant performance by pipelining computational logics, parallelizing the resampling process and the calculation of correlation coefficient and parallel memory access. A proof-of-concept implementation with 1 BWAGIR processing unit of the architecture performs at least 7.4X faster than the CL cluster system with 1 node, and at least 3.4X than the MPM massively parallel machine with 1 node. Further speedup can be achieved by parallelizing multiple BWAGIR units. The architecture with 5 units achieves a speedup of about 3X against the CL with 16 nodes and a comparative speed with the MPM with 30 nodes. More importantly, the BWAGIR architecture can be deployed onboard economically.
A Novel Method for Image Integrity Authentication Based on Fixed Point Theory
Xu Li,Xingming Sun,Quansheng Liu,Beijing Chen
Computer Science , 2013,
Abstract: Based on fixed point theory, this paper proposes a simple but efficient method for image integrity authentication, which is different from Digital Signature and Fragile Watermarking. By this method, any given image can be transformed into a fixed point of a well-chosen function, which can be constructed with periodic functions. The authentication can be realized due to the fragility of the fixed points. The experiments show that 'Fixed Point Image' performs well in security, transparence, fragility and tampering localization.
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