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23 results on '"Zhang, Shemin"'

8. Simulation and Test Research for Integrated Exhaust Manifold and Hot End Durability

Author

Chen Yuanda, Zhang Shemin, Xiongcai Zou, Yuhuang Cao, Weimin Wang, Zhang Zhiming, Tao Chen, Zhang Wenlong, and Xiangwang Li

Subjects
Engineering, 020303 mechanical engineering & transports, Exhaust manifold, 0203 mechanical engineering, business.industry, 020209 energy, 0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology, business, Durability, Automotive engineering, Test (assessment)
Published
2017

10. Development of New I3 1.0L Turbocharged DI Gasoline Engine

Author

Zhang, Shemin, primary, Li, Huaping, additional, Chen, Tao, additional, Jiang, Nan, additional, Tan, Xinzhen, additional, Deng, Limei, additional, Xia, Qingsong, additional, Kapus, Paul, additional, Ma, Mingtang, additional, Li, Wei, additional, Zhang, Junqiang, additional, Ma, Qingjun, additional, and Xia, Yong, additional

Published
2017
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13. A novel DNA computing model based on RecA-mediated triple-stranded DNA structure

Author

Dong Yafei, Zhang Shemin, Fang Gang, and Xu Jin

Subjects
Theoretical computer science, Computer science, RecA Protein, Structure (category theory), Triple-stranded DNA, Present procedure, law.invention, chemistry.chemical_compound, chemistry, DNA computing, law, General Materials Science, Computational problem, Algorithm, DNA, Triple helix
Abstract

The field of DNA computing emerged in 1994 after Adleman's paper was published. Henceforth, a few scholars solved some noted NP-complete problems in this way. And all these methods of DNA computing are based on conventional Watson-Click hydrogen bond of doublehelical DNA molecule. In this paper, we show that the triple-stranded DNA structure mediated by RecA protein can be used for solving computational problems. Sequence-specific recognition of double-stranded DNA by oligonucleotide-directed triple helix (triplex) formation is used to carry out the algorithm. We present procedure for the 3-vertex-colorability problems. In our proposed procedure, it is suggested that it is possible to solve more complicated problems with more variables by this model. *Supported by National Natural Science Foundation of China (Grant Nos. 60533010, 60373089, 60674106), Science Foundation of Shaanxi Bureau of Education (Grant No. 06JK202), Program for New Century Excellent Talents in University (No. NCET-05-0612) an...

Published
2007

14. The optimum balance of shaking force and shaking moment of linkage

Author

Chen Jihong and Zhang Shemin

Subjects
Engineering, business.industry, Mechanical Engineering, Numerical analysis, Vibration control, Bioengineering, Structural engineering, Linkage (mechanical), Computer Science Applications, Counterweight, law.invention, Mechanism (engineering), Moment (mathematics), Mechanics of Materials, law, business, Reduction (mathematics), Balance (ability)
Abstract

This paper introduces the theory of mechanical vibration to the balance of shaking force/moment of linkage, considers that the frame system which the shaking force and shaking moment of linkage acts on is of three-degree-of-freedom forced vibrational system, analyzes the relationship between the system response and its excitation which is caused by the X and Y component of shaking force and the shaking moment, and proposes a new compromise optimum balance method, i.e. by means of the frame response value as objective function, and the counterweight mass parameters of links (Mi∗, Si∗,θi∗) as design variable, by altering the variance regularity of shaking force Fx(t), Fy(t), and the shaking moment Fm(t), reduction of the system vibrational response is achieved. How to determine the weighted coefficient for traditional method which use the weighted sum of shaking force and shaking moment as objective function is found out, and using a four-bar linkage as design example, the difference between the common method and the new method is compared. The calculated results show that the new method is very efficient to reduce the system vibrational response. The correctness of the new optimum balance method is verified by experiment in Section 6 of the paper.

Published
1995

23. A novel DNA computing model based on RecA-mediated triple-stranded DNA structure.

Author

Fang Gang, Zhang Shemin, Dong Yafei, and Xu Jin

Subjects
*DNA, *COMPUTATIONAL complexity, *HYDROGEN bonding, *SEQUENCE spaces, *PROTEINS
Abstract

The field of DNA computing emerged in 1994 after Adleman's paper was published. Henceforth, a few scholars solved some noted NP-complete problems in this way. And all these methods of DNA computing are based on conventional Watson-Crick hydrogen bond of doublehelical DNA molecule. In this paper, we show that the triple-stranded DNA structure mediated by RecA protein can be used for solving computational problems. Sequence-specific recognition of double-stranded DNA by oligonucleotide-directed triple helix (triplex) formation is used to carry out the algorithm. We present procedure for the 3-vertex-colorability problems. In our proposed procedure, it is suggested that it is possible to solve more complicated problems with more variables by this model. [ABSTRACT FROM AUTHOR]

Published
2007
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