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Search Results: 1 - 10 of 127025 matches for " Honghu Li "
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Entropy, Free Radical and Life System  [PDF]
Honghu Li, Junhua Hou
Open Journal of Biophysics (OJBIPHY) , 2016, DOI: 10.4236/ojbiphy.2016.64009
Abstract: Effects of entropy and free radical in life system are elucidated. The results indicate that living organism can maintain normal activities only if a suitable free radicals inside living organism can be guaranteed. Excessive free radical should be eliminated to reduce entropy in living organism. Some ways provided to eliminate excessive free radical, reduce entropy and keep health.
Effect of Oasis Hydrological Processes on Soil Salinization of Tikanlik Oasis in the Lower Tarim River
新疆铁干里克绿洲水文过程对土壤盐渍化的影响

ZHOU Honghu,CHEN Yaning,LI Weihong,
周洪华
,陈亚宁,李卫红

地理学报 , 2008,
Abstract: Based on the monitoring data of soil salt content,quality of surface water and groundwater in the lower reaches of the Tarim River,the effect of hydrological processes of surface water and groundwater on soil salinization was analyzed.The results showed that there was evident positive correlation between degree of mineralization of surface water and salt content in 0-50 cm soil,but the relationship between degree of mineralization of surface water and salt content in 50-100 cm soil was not evident.Soil salt content was closely related to groundwater depth.And the salt content of 0.50 cm soil decreased with the increase of groundwater depth,especially 0-20 cm soil.The soil salt content was higher and showed a T-shaped distribution pattern when the groundwater depth was lower,but the highly aggregated salt content presented a decreasing trend with the increase of soil depth.On the contrary,the changes of soil salt content showed a diamond-shaped distribution pattern and soil salt content at intermediate layer was higher,when the groundwater depth was higher.The results also showed that the turning point of both groundwater mineralization and soil salt content distribution was 6.0 m.So 6.0 m was the critical groundwater depth to accelerate salt aggregation and stop accumulating soil salt content.
Estimating the Area under a Receiver Operating Characteristic Curve For Repeated Measures Design
Honghu Liu,Tongtong Wu
Journal of Statistical Software , 2003,
Abstract:
Research of Web-Based Open Domain Question Answering System
基于Web的开放领域问答系统研究

Fu Honghu,
付鸿鹄

现代图书情报技术 , 2005,
Abstract: This article discusses Web-Based Open Domain Question Answering System and the relevant technologies, such as information retrieval, information extraction, natural language process and so on. It gives a general system architecture of Open Domain Question Answering System and analyzes the component of the it such as question analysis, information retrieval, answer generation.
Database-Oriented Middleware——The Key Technology of Digital Library
面向数据库的中间件 ——数字图书馆关键技术

Fu Honghu,
付鸿鹄

现代图书情报技术 , 2000,
Abstract: This article introduces one of the key-technologies of digital library: Database-oriented middleware and several products of it.
Implementing of Reports in Circulate Subsystem of ASNLIS Using Power Builder
Power Builder实现ASNLIS中的流通统计报表设计

Fu Honghu,
傅鸿鹄

现代图书情报技术 , 2000,
Abstract: This article introduced the background of the study and design of ASNLIS and the developing tool—Power Builder. The design and implementing of the reports in circulation are also discussed.
Chinese speech identification in multi-talker babble with diotic and dichotic listening
JianXin Peng,HongHu Zhang,ZiYou Wang
Chinese Science Bulletin , 2012, DOI: 10.1007/s11434-012-5273-1
Abstract: To explore Chinese Mandarin speech identification in babble of spatially separated talkers, subjective speech identification tests of word and sentence were made with diotic and dichotic listening respectively. The result shows that the speech identification scores changed non-monotonically with the masker number N increasing from 1 to infinity, first declining gradually until reaching their minimums and then rising. Statistical difference was found between the scores of diotic and dichotic listening. For all the values of N checked, dichotic listening achieved higher scores than diotic listening, showing that dichotic effect has an advantage for reducing babble masking. And the scores of sentence test are significantly higher than that of word test with whether diotic or dichotic listening, indicating that the linguistic connection in sentence can help listeners get a better perception of the target speech in babble masking.
AN EXPERT SYSTEM FOR PREDICTING THE REGIONAL HEAVY RAIN

Dai Honghu,Zheng Qisong,Zhao Zhaoxin,

大气科学进展 , 1987,
Abstract: This paper outlines an expert system for predicting the regional heavy rain, including its structure, functions, characteristics, knowledge processing, inference performance, the running, results and conclusions.This system can accept, recognize, analyse, explain, understand, use, appreciate and refine the forecasting knowledge in MKL (Meteorological Knowledge Language) taught by meteorologists. The MKL language is good for describing meteorological knowledge and can represent almost all forecasting knowledge, thus ena-bling the system, with a great range of knowledge, to raise the processing abilities. The complex inference procedure can also be simplified by using MKL language.
Dynamic Transitions for Quasilinear Systems and Cahn-Hilliard equation with Onsager mobility
Honghu Liu,Taylan Sengul,Shouhong Wang
Physics , 2011, DOI: 10.1063/1.3687414
Abstract: The main objectives of this article are two-fold. First, we study the effect of the nonlinear Onsager mobility on the phase transition and on the well-posedness of the Cahn-Hilliard equation modeling a binary system. It is shown in particular that the dynamic transition is essentially independent of the nonlinearity of the Onsager mobility. However, the nonlinearity of the mobility does cause substantial technical difficulty for the well-posedness and for carrying out the dynamic transition analysis. For this reason, as a second objective, we introduce a systematic approach to deal with phase transition problems modeled by quasilinear partial differential equation, following the ideas of the dynamic transition theory developed recently by Ma and Wang.
Finite-Horizon Parameterizing Manifolds, and Applications to Suboptimal Control of Nonlinear Parabolic PDEs
Micka?l D. Chekroun,Honghu Liu
Mathematics , 2014, DOI: 10.1007/s10440-014-9949-1
Abstract: This article proposes a new approach based on finite-horizon parameterizing manifolds (PMs) for the design of low-dimensional suboptimal controllers to optimal control problems of nonlinear partial differential equations (PDEs) of parabolic type. Given a finite horizon $[0,T]$ and a low-mode truncation of the PDE, a PM provides an approximate parameterization of the uncontrolled high modes by the controlled low ones so that the unexplained high-mode energy is reduced, in an $L^2$-sense, when this parameterization is applied. Analytic formulas of such PMs are derived by application of the method of pullback approximation of the high-modes (Chekroun, Liu, and Wang, 2013, http://arxiv.org/pdf/1310.3896v1.pdf). These formulas allow for an effective derivation of reduced ODE systems, aimed to model the evolution of the low-mode truncation of the controlled state variable, where the high-mode part is approximated by the PM function applied to the low modes. A priori error estimates between the resulting PM-based low-dimensional suboptimal controller $u_R^\ast$ and the optimal controller $u^*$ are derived. These estimates demonstrate that the closeness of $u_R^\ast$ to $u^*$ is mainly conditioned on two factors: (i) the parameterization defect of a given PM, associated respectively with $u_R^\ast$ and $u^*$; and (ii) the energy kept in the high modes of the PDE solution either driven by $u_R^\ast$ or $u^*$ itself. The practical performances of such PM-based suboptimal controllers are numerically assessed for various optimal control problems associated with a Burgers-type equation. The numerical results show that a PM-based reduced system allows for the design of suboptimal controllers with good performances provided that the associated parameterization defects and energy kept in the high modes are small enough, in agreement with the rigorous results.
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