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Search Results: 1 - 10 of 74846 matches for " Xiao-Jin Fu "
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An Real-time Embedded Control Systems for Liquid-location and Discharge of Boile
Xiao-Jin Fu,Xin-Hua Zhang
IAENG International Journal of Applied Mathematics , 2007,
Abstract:
Density of clustering algorithm based on relative distance
基于相对距离的密度聚类算法*

HE Xiao-jin,FU Yan,CHEN An-long,
何孝金
,傅彦,陈安龙

计算机应用研究 , 2009,
Abstract: This paper firstly introduced the shortage of the traditional method in calculating the deficiencies in the application of clustering. To address this shortcoming, put forward a relative distance calculation method based on the weighted vector. The algorithm was based on the DBSCAN algorithm, and integrated of the calculation of relative distance and the application of the scope finding of the k-d tree. The algorithm can not only be good clustering effect, and the elimination of the unit of measurement data on the impact of cluster results.
基于消费行为学的城市交通工具选择决策机制
The Choice Mechanism of Urban Transportation Vehicles Based on Consumer Behavior

徐培培,陈富坚,戴波,赵孝进,谢思琪
XU Pei-pei
,CHEN Fu-jian,DAI Bo,ZHAO Xiao-jin,XIE Si-qi

- , 2018, DOI: 10.13718/j.cnki.xdzk.2018.10.026
Abstract: 严重的交通拥堵现象已成为制约城市发展的重大问题,其主要原因之一是私家车出行比例越来越高而公共交通出行比例越来越低,实质是交通工具选择不合理问题.针对此问题,采用消费行为学的研究方法来研究出行者的交通工具选择决策机制,重点从效用方面对选择决策机制进行分析,得到了选择决策的主要影响因素,归纳得到人们出行时的交通工具选择决策机制.研究成果对政府制定公共交通发展政策,缓解我国现阶段严重的交通拥堵现象,引导人们选择低碳绿色的公共交通出行方式,有重要的参考意义.
Severe traffic congestion has become a major problem restricting urban development in China. One of the main reasons for it is that the proportion of private car travel is getting higher and the proportion of bus travel is getting lower and lower, and the essence is the unreasonable choice of vehicles. In order to provide useful reference for the government to formulate the public transport development policy, to alleviate the present serious traffic congestion in our country and to guide the people to choose low-carbon green public travel mode, the authors of this paper use the research methods proposed in the book Consumer Behavior to study the choice mechanism of travel mode. Focuses are placed on the analysis of the decision-making mechanism from the aspect of utility, and the main factors that influence the decision-making are obtained. Finally, the decision-making mechanism of vehicle selection when people travel is summarized
Low-temperature tolerance characteristic and ecological evaluation of broad-leaved evergreen tree species
常绿阔叶树种的耐低温特性及其生态学评价

XIE Xiao-Jin,
谢晓金

生态学报 , 2004,
Abstract: Three eco-physiological characteristics including electric conductivity under lower temperature treatment, coldness index and adaptability of growth were used to analysis the ability of 24 broad-leaved evergreen tree species to withstand the rigors of cold temperature. These plants which naturally distributed over the north limit of differently subtropical latitude were introduced to the open in Nanjing. It is found that coldness index based on the meteorological records of the north limit of their natural ...
Prevalence of the metabolic syndrome in Pudong New Area of Shanghai using three proposed definitions among Chinese adults
Wang-hong Xu, Xiao-nan Ruan, Xiao-jin Fu, Qiu-li Zhu, Hong Zhang, Yun Bai, Hong-yan Wu, Yi Zhou, Hua Qiu, Qiao Sun, Qing-wu Jiang, Li-ming Yang, Jian-jun Gu, Gen-ming Zhao
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-246
Abstract: This cross-sectional study included 5,584 adults at age 20-79 randomly selected from Pudong New Area of Shanghai, China, through a three-stage sampling. All participants were interviewed in-person between April and July of 2008 to collect information on demographic and lifestyle characteristics. At the interview, anthropometry and blood pressure were measured and bio-specimens were collected.The prevalence estimates for the MS increased with age for each definition in men and women, but the estimates varied greatly between the definitions and by sex. The prevalence of the MS was higher in men (20.2%) than in women (18.7%) using WHO definition but this sex difference was reversed when using the modified ATP III (28.4% for men vs. 35.1% for women) and the IDF (15.9% for men vs. 26.7% for women) criteria. The most common metabolic disorder in this population was dyslipidaemia, regardless of the definition used. Substantial agreement, estimated using the kappa statistic, was found between the modified ATP III and IDF definition, whereas the lowest agreement was observed between the WHO and ATP III criteria.The MS is highly prevalent among Chinese adults in Pudong New Area of Shanghai and the most prevalent component was dyslipidemia. These findings underscore the importance of prevention and control efforts for the MS in this area and the need for a unified predictive definition for the syndrome for use by clinical practitioners and public health agencies.The metabolic syndrome (MS) is a cluster of the most dangerous risk factors for type 2 diabetes mellitus and cardiovascular disease (CVD), including abdominal obesity, hypertension, hyperglycemia and dyslipidemia. When these metabolic abnormalities occur in the same individual they confer an additional cardiovascular risk above and beyond the contribution of the individual components [1,2]. It is estimated that the risk from the MS for major cardiovascular events is approximately twice as high as for those with the syn
Analysis of secondary damage to myocardial tissues after severe crush injury in rats
Jin-chun GUO,Xiao-jin LAI,Ming-song LIAO,Xin-rong XIAO
Medical Journal of Chinese People's Liberation Army , 2011,
Abstract: Objective To examine atrial natriuretic peptide(ANP) and endothelin-1(ET-1) and ultrastructural pathologic changes in myocardial tissues in rabbits after severe crush injury and to investigate the secondary damage to myocardial tissues after severe injury and its mechanism.Methods A crush injury model was established in rabbits.Forty-two rabbits were randomly assigned into one control group(n=6) and one crush injury group(n=36).The crush injury group was further divided to six subgroups based on the time after crush release,i.e.,immediately after release and at 6,12,24,48,and 72h after release;each subgroup has six rabbits.The level of blood urea nitrogen,Cr,K+,and CK in serum is detected with an automatic biochemical analyzer.Myoglobin(MYO),cardiac troponin I(c-TnI),and CK-MB in the serum were measured using the chemiluminescence method.The myocardial tissues were collected from the same part of rabbit in each group and the content of ANP and ET-1 was determined by radio-immunoassay and the morphologic changes(at different times after the injury) in hematoxylin and eosin-stained myocardial tissue samples were observed under light microscopy and electron microscopy.Results The levels of CK,CK-MB and c-TnI in serum 12-24h after crush are apparently higher than that before crush(P < 0.05),whereas the content of ANP and ET-1 in the myocardial tissue drops(P < 0.05).Observation under light microscopy and electron microscopy revealed progressive pathologic changes in the myocytes,with the most severe myocardial damage observed within 12-24h after crush injury.The damage subsequently decreased and eventually disappears.Conclusions Severe crush injury may induce secondary damage to myocardial tissues and cardiac function.The changing trend in the cardiac markers ANP and ET-1 is consistent with the pathologic changes in myocytes during crush injury.
Assessment of hypoxia right heart remodeling after acclimatization at high different altitude areas
Xiao-jin LAI,Xin-rong XIAO,Jin-chun GUO,Ming-song LIAO
Medical Journal of Chinese People's Liberation Army , 2012,
Abstract: Objective To assess hypoxic right heart remodeling after acclimatization at high altitude area. Methods One hundred volunteers who came to Tibet from the low-altitude areas by plane were randomly selected to serve as control group, and another 100 servicemen, who were dispatched from low altitude area to a station in Tibet area 3000m above sea level and got acclimatized to serve as altitude group. The altitude group was divided into altitude group 1 (3000-4000m above sea level, n=67) and altitude group 2 (4000-5500m above sea level, n=33) according to the altitude of the campsite, and also into migration-time group 1 (entered and stationed in Xizang for 1-2 years, n=72) and migration-time group 2 (entered and stationed in Xizang for over 2 years, n=28). The structure and function of the right heart were measured using a portable multi-functional composite echocardiography in a quiescent state, and hypoxic right heart remodeling after high-altitude acclimatization was comprehensively analyzed and assessed. Results Compared with control group, the main manifestations of the subjects in the altitude group were right ventricular and right atrial enlargement, right ventricular wall thickening, aggravation of tricuspid regurgitation, and broadening of pulmonary trunk and branch (P < 0.01). As the altitude increased, the right heart remodeling became more obvious, and the right heart remodeling was significantly more obvious in the subjects who svere stationed in the place > 4000m above sea level than in those who were in the area < 4000m (P < 0.01). The longer the time the subjects stationed in the high-altitude area, the more obvious the right heart remodeling. The right heart remodeling was significantly more obvious in those who lived in high-altitude area for > 2 years, particularly in those for > 5 years, than those who lived there for < 2 years (P < 0.01). Conclusions The altitude and living time in high-altitude are main factors for hypoxic right heart remodeling. Altitude acclimatization is only the adjustment of human body to hypoxic environment. A portable multi-functional composite echocardiography can early and timely assess hypoxic right heart remodeling and it is of important significance for ensuring the health of the serviceman in high-altitude area.
Changes of cardiac function and myocardial ultrastructure after crush injury in rabbits
Xiao-jin LAI,Jin-chun GUO,Dan DENG,Ming-song LIAO
Medical Journal of Chinese People's Liberation Army , 2012,
Abstract: Objective To explore the mechanism of myocardial secondary injury and cardiac dysfunction after crush injury in rabbits. Methods Forty-two New Zealand rabbits were randomly divided into control group (6 rabbits) and crush injury group (36 rabbits that received pressure of 20kg for 6h), and crush injury group were subdivided into instant group, 6, 12, 24, 48 and 72h group after pressure relief with 6 rabbits in each group according to pressure relief time. The cardiac function changes in different time periods were detected by the multi-functional composite echocardiography, and the myocardial ultrastructural changes in different time periods were observed under electron microscope. Results The systolic indexes such as left ventricular ejection fraction (EF), left ventricular circumference shortening (CS), ventricular wall thickening and cardiac output per minute and diastolic function indexes such as peak flow velocity during rapid filling phase, peak flow velocity during slow filling phase, E/A ratio and diastolic filling rate were progressively reduced at respective time points after pressure relief, especially EF and CS. All the indexes for cardiac function were reduced to negative peak level 12-24h after pressure relief (P < 0.01); the myocardial ultrastructural changes were obvious, particularly 24h after injury. Conclusions Crush injury may result in secondary injury to the myocardium and cardiac dysfunction, and the peak phase of cardiac injury was during 12-24h after pressure relief. Multi-functional composite cardiac echocardiography can accurately, objectively and rapidly assess the myocardium damage after crush injury.
Dynamic changes of cold hardiness in winter in twelve evergreen broad-leaved species from Nanjing
南京地区12种常绿阔叶树种冬季抗寒性动态变化

XIE Xiao-Jin,HAO Ri-Ming,
谢晓金
,郝日明

生态学报 , 2009,
Abstract: Cold hardiness of twelve evergreen broad-leaved species that introduced to the open field of Nanjing was evaluated by means of electric conductivity. The results found that the order of cold hardiness in those species is consistent and repeated during the winter from 2003 to 2005. Cold hardiness in these species was increased with a period of low temperature induction in winter from October, 2005 to March, 2006. The highest value was observed in the middle of January, with lowest observed on October or March as usual. The responding speed to the low temperature in winter in these species varies. While Cinnamomum camphora and Cinnamomum japonicum respond fast to low temperature, Ilex purpurea and Ilex latifolia respond slowly. The rest respond normally. The cold hardiness revealed in this study is well agreed with the observation of winter in Nanjing. Therefore, the results obtained may be used as important reference in introducing evergreen broad-leaved species into higher latitude regions.
A New Image Registration Method for Repeat-Pass InSAR Based on Fourier-Mellin Transformation and Correlation-Coefficient Algorithm
基于Fourier-Mellin变换和相干系数法的重复轨道干涉SAR图像配准新方法

Shi Xiao-jin,Zhang Yun-hua,
石晓进
,张云华

电子与信息学报 , 2009,
Abstract: Compared with one pass InSAR system with two antennae, the registration of image pair of repeat-pass InSAR system is much more difficult due to parallel tracks are usually not guaranteed. In this paper, a new image co-registration algorithm for repeat-pass InSAR, which combines the Fourier-Mellin transform and correlation-coefficient algorithm, is proposed to perform accurate co-registration for complex image pair having rotation angle due to unparallel tracks. When the method is used as coarse co-registration step, a nonlinear amplitude transformation is introduced as pre-processing to overcome the failure of Fourier-Mellin transformation method in case of image pair with large dynamic amplitude range and non-uniform amplitude distribution, and when used as fine co-registration step, correlation-coefficient algorithm is incorporated to accurately estimate the small rotation angle between image pair. SIR-C/X X-band experimental data are used to test the proposed algorithm through comparing with traditional correlation-coefficient algorithm in both accuracy and run time. The experimental results prove the effectiveness of the proposed algorithm.
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