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Search Results: 1 - 10 of 81260 matches for " Jingjing Liu "
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The Cauchy problem of a periodic 2-component μ-Hunter-Saxton system in Besov spaces
Jingjing Liu
Mathematics , 2012,
Abstract: This paper is concerned with the local well-posedness and the precise blow-up scenario for a periodic 2-component \mu-Hunter-Saxton system in Besov spaces. Moreover, we state a new global existence result to the system. Our obtained results for the system improve considerably earlier results.
Blow-up phenomena and global existence for the periodic two-component Dullin-Gottwald-Holm system
Jingjing Liu
Mathematics , 2012,
Abstract: This paper is concerned with blow-up phenomena and global existence for the periodic two-component Dullin-Gottwald-Holm system. We first obtain several blow-up results and the blow-up rate of strong solutions to the system. We then present a global existence result for strong solutions to the system.
The Influence of the Number of Employees on the Quality Management in Pharmaceutical Production  [PDF]
Jingjing Luo, Gordon G. Liu, Weijun Tian
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.73005
Abstract: Based on the survey data from the questionnaire of Quality Management of Pharmaceutical Production Enterprises in Anhui Province, this research examines the relationship between the number of employees and inspection for GMP of pharmaceutical manufacturers by adopting OLS model and Logit model. We find that the more employees there are, the better their inspection results are. Enterprises with large number of employees generally have plenty people to deal with the problems of quality supervision in the production of pharmaceuticals and have a good knowledge of GMP. They can produce high quality medicines. Therefore, small companies should be supervised frequently. In daily supervision, through the number of employees, it can quickly judge the pros and cons of the quality management level of the company, which is beneficial to allocate regulatory resources rationally.
Positive Solutions for a Class of Fourth-Order Boundary Value Problems in Banach Spaces
Jingjing Cai,Guilong Liu
Abstract and Applied Analysis , 2011, DOI: 10.1155/2011/831730
Abstract: Using a specially constructed cone and the fixed point index theory, this work shows existence andnonexistence results of positive solutions for fourth-order boundary value problem with two different parameters in Banach spaces.
Blow-up phenomena and global existence for a periodic two-component Hunter-Saxton system
Jingjing Liu,Zhaoyang Yin
Mathematics , 2010,
Abstract: This paper is concerned with blow-up phenomena and global existence for a periodic two-component Hunter-Saxton system. We first derive the precise blow-up scenario for strong solutions to the system. Then, we present several new blow-up results of strong solutions and a new global existence result to the system. Our obtained results for the system are sharp and improve considerably earlier results.
Global weak solutions for a periodic two-component $μ$-Hunter-Saxton system
Jingjing Liu,Zhaoyang Yin
Mathematics , 2010,
Abstract: This paper is concerned with global existence of weak solution for a periodic two-component $\mu$-Hunter-Saxton system. We first derive global existence for strong solutions to the system with smooth approximate initial data. Then, we show that the limit of approximate solutions is a global weak solution of the two-component $\mu$-Hunter-Saxton system.
On the Cauchy problem of a two-component b-family equation
Jingjing Liu,Zhaoyang Yin
Mathematics , 2010,
Abstract: In this paper, we study the Cauchy problem of a two-component b-family equation. We first establish the local well-posedness for a two-component b-family equation by Kato's semigroup theory. Then, we derive precise blow-up scenarios for strong solutions to the equation. Moreover, we present several blow-up results for strong solutions to the equation.
On the Cauchy problem of a periodic 2-component $μ$-Hunter-Saxton equation
Jingjing Liu,Zhaoyang Yin
Mathematics , 2010,
Abstract: In this paper, we study the Cauchy problem of a periodic 2-component $\mu$-Hunter-Saxton system. We first establish the local well-posedness for the periodic 2-component $\mu$-Hunter-Saxton system by Kato's semigroup theory. Then, we derive precise blow-up scenarios for strong solutions to the system. Moreover, we present a blow-up result for strong solutions to the system. Finally, we give a global existence result to the system.
On the Cauchy problem of a weakly dissipative $μ$HS equation
Jingjing Liu,Zhaoyang Yin
Mathematics , 2011,
Abstract: In this paper, we study the Cauchy problem of a weakly dissipative $\mu$HS equation. We first establish the local well-posedness for the weakly dissipative $\mu$HS equation by Kato's semigroup theory. Then, we derive the precise blow-up scenario for strong solutions to the equation. Moreover, we present some blow-up results for strong solutions to the equation. Finally, we give two global existence results to the equation.
Global existence for the two-component Camassa-Holm system and the modified two-component Camassa-Holm system
Jingjing Liu,Zhaoyang Yin
Mathematics , 2014,
Abstract: The present work is mainly concerned with global existence for the two-component Camassa-Holm system and the modified two-component Camassa-Holm system. By discovering new conservative quantities of these systems, we prove several new global existence results for these two-component shallow water systems.
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