Si Chuan University

Ducheng, China

Si Chuan University

Ducheng, China
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Ding S.,Si Chuan University
Journal of Computational and Theoretical Nanoscience | Year: 2016

This paper describes in detail theory thoughts and application situations of FCM, KFCM and traditional level set method as well as image segmentation method of variational level set without need of reinitialization and a kind of medical image segmentation method of variational level set based on kernel fuzzy clustering is put forward. It is proved that this method is able to effectively segment the medical image and comparing with Lee model, it can segment the images with the similar internal pixel grayscale and poor separability of edge in a certain extent and the iterations are reduced by theoretical proof and a large number of experimental results. At present, it is the hot research topics and the new tendency in the medical image segmentation research that new theory and method are pursued for integration with level set. How to further reduce the computational complexity and improve the algorithm speed and accuracy of segmentation is also the main work researched in next step of this paper. © 2016 American Scientific Publishers All rights reserved.


Song T.-J.,Hong Kong Baptist University | Leng H.-F.,Hong Kong Baptist University | Zhong L.L.D.,Hong Kong Baptist University | Wu T.-X.,Si Chuan University | Bian Z.-X.,Hong Kong Baptist University
Trials | Year: 2015

The Consolidated Standards of Reporting Trials (CONSORT) Statement was published in 1996, and first introduced to China in 2001. Although CONSORT has been widely accepted in high-quality international journals, we still need to have more investigation on how many Chinese journals have adopted the CONSORT Statement, and whether the quality of reporting has improved. A systematic search of the "Instructions to authors" in all Chinese medical journals in China Academic Journals (CAJ) Full-text Database was conducted up to February 2012 and only 7 journals officially listed the requirements of the CONSORT Statement. The research articles about randomized controlled trials (RCTs) published in 2002, 2004, 2006, 2008, and 2010 from journals which had specifically adopted the CONSORT Statement, and from 30 top journals based on the Chinese Science Citation Index (CSCI) 2011 as the control group, were identified. The quality of both cohorts of articles was assessed using the revised CONSORT Checklist and Jadad scale. A total of 1221 Chinese medical journals was identified. Only seven journals stated clearly in the "Instructions to authors" that authors should adopt the CONSORT requirement in the clinical trial paper. None of these journals is among the control group in the CSCI 2011. In the selected years, a total of 171 articles from 7 journals which had adopted CONSORT and 232 articles in the control were identified as including RCT trials. The average scores according to the revised CONSORT Checklist were 29.47 for the CONSORT-adopting journals and 25.57 for the control group; while the average scores based on the Jadad scale were 2.53 for CONSORT-adopting journals and 1.97 for the control group. Few journals among Chinese medical journals have adopted the CONSORT Statement. The overall quality of RCT reports in the 7 journals which have adopted CONSORT was better than those in the top 30 journals which have not adopteded CONSORT. The quality of RCT reports in Chinese journals needs further improvement, and the CONSORT Statement could be a very helpful guideline. © Song et al. 2015.


Wang W.,Si Chuan University | Wang X.,Si Chuan University
Sensors and Transducers | Year: 2013

A key technology of intelligent video surveillance was demonstrated in this paper. The first human motion detection in video sequences, and then carry on the track, the research on the recognition of human behavior, the abnormal behavior detection. Firstly, the first video image denoising with Gauss low-pass filter, then using the background subtraction method and frame difference method for target detection, and then use morphological image processing, regional connectivity analysis and a series of processing methods, to eliminate the small holes and noise, the moving object is extracted from the video sequence background subtraction method, and compare the advantages and disadvantages and frame difference method. Finally, the analysis and discussion of human behavior recognition method were demonstrated. Methods using the template matching method based on characteristic value for human identification, selection of structure moment features with translation, rotation, scaling invariance of the values, the method overcomes the defects of the traditional template matching method, comparing the similarity of feature extraction value, in order to distinguish between normal and abnormal behavior, to achieve the recognition of human behavior. © 2013 IFSA.


Feng P.,SI CHUAN University | Xiaojun W.,SI CHUAN University | Weihong W.,SI CHUAN University
International Journal on Smart Sensing and Intelligent Systems | Year: 2014

In recent years, due to the video surveillance applications more and more widely, people are not satisfied with the goal of monitoring, and the video monitoring technology of intelligent video moving object detection and tracking technology has received extensive attention. The research work in this paper is in the field, the moving target detection spatiotemporal correlation and difference contour tracking algorithm based on a fixed background. The algorithm in the background under the condition of fixed to pay a smaller time complexity, the target detection and tracking has a good effect, so it has higher application value. In this paper, the prospect of caused motion detection of occlusion background foreground correlation problem, put forward the video moving object detection method based on kernel independent component analysis, canonical correlation to minimize the component in the high dimensional feature space in order to separate the foreground nuclear background. Independent component analysis assumes that the foreground and background independent, avoid the correlation problem. The two objective functions based on Kernel Independent Component Analysis: analysis of kernel independent component analysis based on kernel canonical component (KCCA) and kernel independent component analysis (KGV) based on the generalized variance. KCCA is the application of canonical correlation analysis in the kernel method, discuss is the first canonical correlation separation component of high dimensional map, and KGV are typical correlation between the components in the high dimensional space of the whole spectrum. Both KCCA and KGV improved the accuracy of motion detection.


Weihong W.,SI CHUAN University | Xiaojun W.,SI CHUAN University
Sensors and Transducers | Year: 2013

With the rapid development of computer technology, motion analysis of video has become a hot research topic in the field of computer vision based on. As the core technology and the underlying problems of visual analysis of moving objects, moving objects in video from a dynamic scene segmentation is very important, it is the subsequent high-level processing, such as moving object tracking, object classification and activity recognition, event detection based high level video processing and application of understanding. The paper introduces the segmentation technology to monitor the video in multimedia, video object, application and research situation of sports analysis and other fields, and discussed the significance and application of the high speed development of the information age, the development situation of domestic and foreign video segmentation techniques are reviewed, including spatial intra-frame segmentation, global motion estimation, a few hand joint space-time segmentation discussed video segmentation method, and according to the characteristics of diving video sequences, to study how to extract moving objects from a dynamic scene problem. On this basis, the video object extraction method used in diving and gymnastics videos. © 2013 IFSA.


Patent
Sichuan Gooddoctor Pharmaceutical Group Co. and Si Chuan University | Date: 2014-06-04

The invention belongs to the field of medicaments, and particularly relates to oxazolidinone compounds and their uses in the preparation of antibiotics. A technical problem to be solved by the invention is to provide new oxazolidinone compounds having the structure represented by Formula I. The oxazolidinone compounds of the invention, which are new compounds obtained through numerous screening, have significant antibacterial activity against bacteria such as drug-resistant staphylococcus aureus, fecal coliform bacteria, and streptococcus pneumoniae, while exhibiting low toxicity. The invention provides new options for the development and application of antibiotics.


Patent
Si Chuan University and CSPC Zhongqi Pharmaceutical Technology Shijiazhuang Co. | Date: 2013-04-10

Arylamino purine derivatives represented by formula I and their preparation method are disclosed, wherein each substituent is defined as in the description. The derivatives have an inhibitory effect on non-small cell lung cancer with deletion mutation of exon 19 or L858R point mutation of exon 21 in epidermal growth factor receptor (EGFR).


PubMed | Si Chuan University
Type: Journal Article | Journal: Folia biologica | Year: 2016

The intent of the study was to evaluate immune system changes during 12 weeks of abstinence in heroin users. We recruited men (N = 65) aged 18-45 years and collected demographic and heroin use pattern data. Serum blood levels of total interleukin 2 (IL-2), interferon (IFN-), immunoglobulin (Ig) A, IgG, and IgM were assessed at five time points. The IL-2 level was increased on day 84 as compared to that in healthy controls. The IFN- level was higher in heroin users than in healthy controls between days 0 and 28, and was decreased on day 84. IgG and IgM levels in heroin users were higher than those in healthy controls in our 12-week study, and were in positive correlation with the way of using the drug, duration of heroin dependence, and daily heroin intake. Our data revealed that the immune system was not restored during the 12 weeks of heroin withdrawal.


Patent
Si Chuan University | Date: 2014-04-16

The invention belongs to the medicine field, and particularly relates to benzothiazinethione derivatives and preparation methods and uses thereof. In the aspect of the present invention, novel benzothiazinethione derivatives of formula I are provided, the benzothiazinethione derivatives of the invention are new compounds obtained based on extensive screening. Experimental results show that the benzothiazinethione derivatives of formula I have obvious inhibitory effects on mycobacterium tuberculosis, with effects equivalent to or even better than that of isoniazide (MIC_(90)=0.8M). The benzothiazinethione derivatives of formula I have anti-mycobacterium tuberculosis activities, and provide new choices for the development and application of antitubercular agents.


Patent
Si Chuan University and Sichuan Gooddoctor Pharmaceutical Group Co. | Date: 2012-06-15

The invention belongs to the field of medicaments, and particularly relates to oxazolidinone compounds and their uses in the preparation of antibiotics. A technical problem to be solved by the invention is to provide new oxazolidinone compounds having the structure represented by Formula I. The oxazolidinone compounds of the invention, which are new compounds obtained through numerous screening, have significant antibacterial activity against bacteria such as drug-resistant staphylococcus aureus, fecal coliform bacteria, and streptococcus pneumoniae, while exhibiting low toxicity. The invention provides new options for the development and application of antibiotics.

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