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Search Results: 1 - 10 of 26411 matches for " XIE Tao "
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Multivariate Regression Analysis and Statistical Modeling for Summer Extreme Precipitation over the Yangtze River Basin, China
Tao Gao,Lian Xie
Advances in Meteorology , 2014, DOI: 10.1155/2014/269059
Abstract: Extreme precipitation is likely to be one of the most severe meteorological disasters in China; however, studies on the physical factors affecting precipitation extremes and corresponding prediction models are not accurately available. From a new point of view, the sensible heat flux (SHF) and latent heat flux (LHF), which have significant impacts on summer extreme rainfall in Yangtze River basin (YRB), have been quantified and then selections of the impact factors are conducted. Firstly, a regional extreme precipitation index was applied to determine Regions of Significant Correlation (RSC) by analyzing spatial distribution of correlation coefficients between this index and SHF, LHF, and sea surface temperature (SST) on global ocean scale; then the time series of SHF, LHF, and SST in RSCs during 1967–2010 were selected. Furthermore, other factors that significantly affect variations in precipitation extremes over YRB were also selected. The methods of multiple stepwise regression and leave-one-out cross-validation (LOOCV) were utilized to analyze and test influencing factors and statistical prediction model. The correlation coefficient between observed regional extreme index and model simulation result is 0.85, with significant level at 99%. This suggested that the forecast skill was acceptable although many aspects of the prediction model should be improved. 1. Introduction Temporal and spatial variations in extreme precipitation events often result in serious impacts on human society and ecological environment. And higher frequency of these extremes poses vast catastrophic consequences, including floods, landslides, and urban waterlog (e.g., [1, 2]). In recent years numerous disastrous floods have been documented worldwide, for example, the intense flash flooding occurred in Minnesota, Wisconsin, in the United States, in June, 2012 [3], and the extreme rainfall in Beijing, China, in July, 2012 [4]; all those events have caused devastating social impacts. Moreover, in the context of global climate change, previous studies have suggested that many regions over the world would experience more frequent extreme precipitation with the enhancement of anthropogenic greenhouse gas and aerosol emissions (e.g., [5–8]). Therefore, projection of seasonal variations in precipitation extremes on local and regional scale is overwhelmingly important for reducing casualties and property losses as well as water resource management. However, the two major current methods, for dynamical model and statistics, show low operational skills for forecasting local extreme
Effects of Rivastigmine Combined with Reinhartdt and Sea Cucumber Capsule in Patients with Mild-to-Moderate Parkinson’s Disease Dementia: A Pilot Study  [PDF]
Yongxing Yan, Lizhen Liang, Tao Xie, Yonghui Shen, Yanjing Cao
Chinese Medicine (CM) , 2014, DOI: 10.4236/cm.2014.52011
Abstract:
Many patients with Parkinson’s disease suffer cognitive impairment or dementia. Cholinesterase inhibitors (ChEIs) have positive effects on patients with Parkinson’s Disease Dementia (PDD). But it is only improve symptoms. There is no etiological cure for PDD. So, In order to achieve the best outcomes, the combination of ChEIs and other therapeutic strategies is needed to study. In the present study, we investigate the efficacy and safety of rivastigmine combined with Reinhartdt and Sea Cucumber Capsule (RSC) in patients with mild-to-moderate PDD, and its effect on thyroid function. There were 52 patients were randomly assigned to receive either rivastigmine (3 mg/ day) or rivastigmine plus RSC (2.7 g/day) treatment for 24 weeks. Efficacy was investigated by the change of the scores of Alzheimer’s Disease Assessment Scale cognitive subscale (ADAS-Cog), Activities of Daily Life (ADL) and Unified Parkinson’s Disease Rating Scale (UPDRS) part III (motor scale). Meanwhile, thyroid hormone levels were detected before and after 12 weeks, 24 weeks treatment in all patients. Results showed that the patients treated with rivastigmine plus RSC showed more improvement in the cognition and the daily life activities compared to those treated with rivastigmine alone. Significant difference was present after being treated for 12 weeks or more. However, no group difference was found on UPDRS part III, thyroid hormone level change and the incidence of adverse events (11.1% vs 16.0%) between the two groups of treatment. Adverse effects were nausea and vomiting which were the main reasons for the dropout. The finding suggests that Rivastigmine plus RSC may improves the treatment effects in cognition and the ADL of the patients with mild-to-moderate PDD, compared with the rivastigmine treatment alone. However, no effect was observed on the motor
AN ANALYSIS OF USER INTERFACE SUPPERTING ENVIRONMENT FOR GLIS
通用图书馆集成系统GLIS用户界面支撑环境剖析

Xie Tao,
谢涛

现代图书情报技术 , 1994,
Abstract: This paper listed the advanced requirements of library and information application system.Further analysis was mase on the various characteristics user interface in GLIS as an example and its realization methods.
Technical Approaches to System Architecture and Software Development of Library Automation System
图书馆计算机应用系统的平台选择与开发技术

Xie Tao,
谢涛

现代图书情报技术 , 1997,
Abstract: Existing Library Automation Systems in Chinese Libraries are primarily based on shared file server LANs or centralized host/terminal systems,Both approaches have some drawbacks to meeting the future requirements of the libraries.This paper addresses necessities for development of Client/Server based library automation systems.Issues in selection of hardware,operating systems,communication protocols,DBMS are discussed.Some of the methods of software development are also discussed.
Protein functional-group 3D motif and its applications
Yuzhen Ye,Tao Xie,Dafu Ding
Chinese Science Bulletin , 2000, DOI: 10.1007/BF03183524
Abstract: Representing and recognizing protein active sites sequence motif (1D motif) and structural motif (3D motif) is an important topic for predicting and designing protein function. Prevalent methods for extracting and searching 3D motif always consider residue as the minimal unit, which have limited sensitivity. Here we present a new spatial representation of protein active sites, called “functional-group 3D motif”, based on the fact that the functional groups inside a residue contribute mostly to its function. Relevant algorithm and computer program are developed, which could be widely used in the function prediction and the study of structural-function relationship of proteins. As a test, we defined a functional-group 3D motif of the catalytic triad and oxyanion hole with the structure of porcine trypsin (PDB code: 1mct) as the template. With our motif-searching program, we successfully found similar sub-structures in trypsins, subtilisins and α/β hydrolases, which show distinct folds but share similar catalytic mechanism. Moreover, this motif can be used to elucidate the structural basis of other proteins with variant catalytic triads by comparing it to those proteins. Finally, we scanned this motif against a non-redundant protein structure database to find its matches, and the results demonstrated the potential application of functional group 3D motif in function prediction. Above all, compared with the other 3D-motif representations on residues, the functional group 3D motif achieves better representation of protein active region, which is more sensitive for protein function prediction.
Measuring visibility using digital photography
Xingsheng Xie,Shanchang Tao,Xiuji Zhou
Chinese Science Bulletin , 1999, DOI: 10.1007/BF02886142
Abstract: An automatic digital photography visibility system (DPVS) is presented, which can directly measure and monitor horizontal visibility during daytime through digital shooting. After shooting a scene of given black object and background via its CCD digital camera, the system can capture and transfer photographic images in the camera to a computer, as well as process the digital images and calculate the value of visibility. The formulas for calculating visibility with this method and analysing the effect of non-black object on measured results have also been derived. And then the comparison of DPVS observations with a Lidar-visibility measurements has been carried out. The results show that the average deviation and relative average deviation of visibility acquired by DPVS from lidar-visibility measurements are respectively within 0.927 km and 6.68%.
Measuring visibility using digital photography

Xingsheng Xie,Shanchang Tao,Xiuji Zhou,

科学通报(英文版) , 1999,
Abstract: An automatic digital photography visibility system (DPVS) is presented, which can directly measure and monitor horizontal visibility during daytime through digital shooting. After shooting a scene of given black object and background via its CCD digital camera, the system can capture and transfer photographic images in the camera to a computer, as well as process the digital images and calculate the value of visibility. The formulas for calculating visibility with this method and analysing the effect of non-black object on measured results have also been derived. And then the comparison of DPVS observations with a Lidar-visibility measurements has been carried out. The results show that the average deviation and relative average deviation of visibility acquired by DPVS from lidar-visibility measurements are respectively within 0.927 km and 6.68%.
Post subthalamic area deep brain stimulation for tremors: a mini-review
Xie Tao,Bernard Jacqueline,Warnke Peter
Translational Neurodegeneration , 2012, DOI: 10.1186/2047-9158-1-20
Abstract: Deep brain stimulation (DBS) in the thalamic ventrointermediate nucleus (VIM) is the traditional target for the surgical treatment of pharmacologically refractory essential tremor or parkinsonian tremor. Studies in recent years on DBS in posterior subthalamic area (PSA), including the zona incerta and the prelemniscal radiation, have shown promising results in tremor suppression, particularly for those tremors difficult to be well controlled by VIM DBS, such as the proximal postural tremor, distal intention tremor and some cerebellar outflow tremor in various diseases including essential tremor and multiple sclerosis. The adverse effect profile of the PSA DBS is mild and transient, without lasting or striking dysarthria, disequilibrium or tolerance, in contrast to VIM DBS, particularly bilateral DBS. However, the studies on PSA DBS so far are still limited, with a handful of studies on bilateral PSA, and a short follow up duration compared to VIM. More studies are needed for direct comparison of these targets in the future. A review here would help to gain more insight into the benefits and limits of the PSA DBS compared to that in VIM in the clinical management of various tremors, particularly for those difficult to be well controlled by traditional VIM DBS.
Strategic Alliance: Competitiveness of Sino-Foreign Cooperative School Running Operation
Lihui Xie,Tao Hou,Ze Li
International Education Studies , 2011, DOI: 10.5539/ies.v4n1p51
Abstract: Lying in a transformation period of economic development, economic prosperity, social progress and development in science and technology have to rely on strong competitiveness of a nation’s universities to a large degree. Actually, universities’ competitiveness is closely related to the improvement of a nation’s competitiveness in human resources, industrial development and its comprehensive strength. From the perspective of universities’ international strategic alliance, this paper analyzes the ways to improve Chinese universities’ competitiveness as well as its components based on the theory of improving international competitiveness through Sino-foreign cooperative school operation.
Recognition of Bragg Wavelength Disturbed by Time Delay of Fiber Length in Prepositive Tunable Filter  [PDF]
Chuan Li, Xiaoyong Chao, Yingna Li, Tao Xie, Zhengang Zhao, Xin Xiong
Optics and Photonics Journal (OPJ) , 2013, DOI: 10.4236/opj.2013.32B054
Abstract:

The wavelength shift in fiber Bragg grating does not depend directly on the total light levels, losses in the connecting fibers and couplers, or source power. However, if the tunable Fabry-Perot filter is place on the end of incident fiber, the detected time delay of modulation light is occurred due to the unmatch between the scanning time and light transmission time in the transmission fiber. Consequently, the detected peak wavelength shifts with the length of transmission fiber. Thus, the peak wavelength shift effect of Bragg reflective light transmitted in fiber with different fiber length can be obvious in the demodulator with a prepositive tunable Fabry-Perot filter. The experiment indicates the shift rates of 0.109 - 0.126 nm/km increase approximately linearly with the original peak wavelength of 1532.917 - 1560.300 nm at the fiber length of 0 - 6 km. To certify the consistency of measurement data, the criterion correction is introduced. By using the differential method of two fiber Bragg gratings with an optical path, the differential worth is compensated from the disturbance modulated by the time delay of fiber length.

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