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Search Results: 1 - 10 of 142219 matches for " LI Hui "
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Two New Integrable Hierarchies and Their Nonlinear Integrable Couplings  [PDF]
Hui Chang, Yuxia Li
Journal of Applied Mathematics and Physics (JAMP) , 2018, DOI: 10.4236/jamp.2018.66113
Abstract: By introducing an invertible linear transform, a new Lie algebra G is obtained from the Lie algebra H. Making use of the compatibility conditions of the respective isospectral problems, a generalized NLS-MKdV hierarchy and a new integrable soliton hierarchy are achieved by using the trace identity or the variational identity. Then, two special non-semisimple Lie algebras \"\"?and \"\"?are explicitly conducted. As an application, the nonlinear continuous integrable couplings of the obtained integrable systems as well as their bi-Hamiltonian structures are established, respectively.
B-Spline Approximation of Ship Waves on the Free Surface  [PDF]
Fang Li, Hui Li, Huilong Ren
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.31011

We consider the problem of a ship advancing in waves. In this method, the zone of free surface in the vicinity of body is discretized. On the discretized surface, the first-order and second-order derivatives of ship waves are represented by the B-Spline formulae. Different ship waves are approximated by cubic B-spline and the first and second order derivates of incident waves are calculated and compared with analytical value. It approves that this numerical method has sufficient accuracy and can be also applied to approximate the velocity potential on the free surface.

The Research on the Paths of Hubei Higher Vocational Colleges’ Serving the Regional Economic and Social Development  [PDF]
Hui Li, Ping Li, Lei Pei
Creative Education (CE) , 2015, DOI: 10.4236/ce.2015.63038
Abstract: Higher vocational education is a mode of modern education, which can serve regional economy. Higher vocational colleges in Hubei have played a positive role in the service of economic and social development in the region, but from the point of higher vocational colleges themselves, there also exist problems as follows: some higher vocational colleges are unable to meet the diverse needs of talents because of the so-called popular majors; specialties setting of higher vocational colleges lack forward-looking, which is out of touch with the needs of the society; some higher vocational colleges cannot serve the society well; technology research and development of higher vocational colleges cannot satisfy social demand; talented teachers are not enough in higher vocational colleges. Our paper proposes that Hubei higher vocational colleges should take measures as follows: first, we should establish the education view of running the school open to cultivate applied talents to serve the development of regional economy and we should establish the programs according to the regional industry posts; second, we should make full use of teachers to provide consulting service for local government and enterprises; third, we should make use of resources to provide training and service for the society and expand the social service sphere; finally, we should make the occupation education concept merge into the regional members of society life.
Reduction of choline acetyltransferase activities inAPP 770 transgenic mice
Hui Li
Chinese Science Bulletin , 2000, DOI: 10.1007/BF02887413
Abstract: Transgenic mice overexpressing the 770-amino acid isoform of human Alzheimer amyloid precursor protein exhibit extracellular β-amyloid deposits in brain regions including cerebral cortex and hippocampus, which are severely affected in Alzheimer’s disease patients. Significant reduction in choline acetyltransferase (ChAT) activities has been observed in both cortical and hippocampal brain regions in the transgenic mice at the age of 10 months compared with the age-matched non-transgenic mice, but such changes have not been observed in any brain regions of the transgenic mice under the age of 5 months. These results suggest that deposition of β-amyloid can induce changes in the brain cholinergic system of the transgenic mice.
Building up a Performance Indicator System of International Projects, Based on the Balanced Scorecard
Hui LI
Management Science and Engineering , 2010,
Abstract: This paper is established on the in depth analysis of Balanced Scorecard(BSC)in which the BSC has been made necessary amendments so as to be use in establishing the performance indicator system of projects. This paper preliminarily builds up a performance indicator system based on performance scorecard considering the characteristics of international projects.Keywords: international projects; balanced scorecard; performance indicator
Order Bi-spectrum For Bearing Fault Monitoring and Diagnosis Under Run-up Condition
Hui Li
Journal of Computers , 2011, DOI: 10.4304/jcp.6.9.1994-2000
Abstract: Varying speed machinery condition detection and fault diagnosis are more difficult due to non-stationary machine dynamics and vibration. Therefore, most conventional signal processing methods based on time invariant carried out in constant time interval are frequently unable to provide meaningful results. This paper deals with the detection of bearing faults in gearbox under non-stationary run-up of gear drives. In order to process the non-stationary vibration signals such as run-up or run-down vibration signals effectively, the order bi-spectrum technique is presented. This new method combines computed order tracking technique with bi-spectrum analysis. First, the vibration signal is sampled at constant time increments during run-up of gearbox and then uses numerical techniques to resample the data at constant angle increments. Therefore, the vibration signals are transformed from the time domain transient signal to angle domain stationary one. Second, the re-sample signal is processed by bi-spectrum analysis method. The procedure is illustrated with the experimental vibration data of a gearbox. The experimental results show that order bi-spectrum technique can effectively diagnosis and diagnosis the faults of bearing.
Influence of electro-acupuncture of Neiguan on plasmic concentrations of NO and TNFα in endotoxin shock rats
LI Hui
Zhong Xi Yi Jie He Xue Bao , 2003,
Abstract: Objective: To observe the effect of electro-acupuncture of Neiguan (PC 6) on mean systemic arterial blood pressure and plasmic concentrations of NO and TNFα in endotoxin shock rats. Methods: The model of endotoxin shock was induced by lipopolysaccharide (1.5 mg/kg i.v.) and D-galactosamine (100 mg/kg i.p.). Aminoguanidine (100 mg/kg i.p.) and electro-acupuncture of bilateral Neiguan (PC 6) were administered. A catheter was inserted into the right subclavian artery to record the change of blood pressure and the blood was abstracted out and centrifuged to determine the NO and TNFα concentrations. Results: Electro-acupuncture of Neiguan (PC 6) retrieved the blood pressure and reduced the plasmic NO and TNFα concentrations. Conclusion: Electro-acupuncture of Neiguan (PC 6) expresses an anti-endotoxin shock effect by repressing the plasmic NO and TNFα concentrations smoothly and retrieving the blood pressure stably.
Study on Construction Cost of Construction Projects
Hui Li
Asian Social Science , 2009, DOI: 10.5539/ass.v5n8p144
Abstract: China is a country which has the largest investment amount in engineering construction in the world and which has the most construction projects. It is a significant subject for the extensive engineering managers to have effective engineering cost management in construction project management and to reasonably determine and control construction cost on the condition of ensuring construction quality and time limit. On the basis of the status quo of losing control in Chinese construction investment and of separation of technique and economy in engineering, and guided by basic theories of construction cost control, the author discusses control methods and application of construction cost, sets forth existing issues in construction cost control and influences of these issues on determination and control of construction cost, puts forward that construction cost control should reflect cost control of the entire construction process at the earlier stage of construction, and then introduces some procedures and methods of applying value project cost control at all stages of construction projects.
International Engineering Bidding and Quoting Statics and Quotation Compilation Skill
Hui Li
Asian Social Science , 2009, DOI: 10.5539/ass.v5n9p142
Abstract: By learning from foreign advanced ideas, this paper summarizes and compares the engineering cost management modes and theories in America, England, and Europe, and advances suggestions for the international bidding and quoting tactics and quotation compilation skills of China’s construction industry.
On the construction of certain 6-dimensional symplectic manifolds with Hamiltonian circle actions
Hui Li
Mathematics , 2003,
Abstract: Let $(M, \omega)$ be a connected, compact 6-dimensional symplectic manifold equipped with a semi-free Hamiltonian $S^1$ action such that the fixed point set consists of isolated points or surfaces. Assume dim $H^2(M)<3$, in \cite{L}, we defined a certain invariant of such spaces which consists of fixed point data and twist type, and we divided the possible values of these invariants into six ``types''. In this paper, we construct such manifolds with these ``types''. As a consequence, we have a precise list of the values of these invariants.
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