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Search Results: 1 - 10 of 59320 matches for " YANG Xiaoguang "
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A Neural Network Approach to Predicting Car Tyre Micro-Scale and Macro-Scale Behaviour  [PDF]
Xiaoguang Yang, Mohammad Behroozi, Oluremi A. Olatunbosun
Journal of Intelligent Learning Systems and Applications (JILSA) , 2014, DOI: 10.4236/jilsa.2014.61002
Abstract:

Finite Element (FE) analysis has become the favoured tool in the tyre industry for virtual development of tyres because of the ability to represent the detailed lay-up of the tyre carcass. However, application of FE analysis in tyre design and development is still very time-consuming and expensive. Here, the application of various Artificial Neural Network (ANN) architectures to predicting tyre performance is assessed to select the most effective and efficient architecture, to allow extensive parametric studies to be carried out inexpensively and to optimise tyre design before a much more expensive full FE analysis is used to confirm the predicted performance.

The Character Transformation of Henry Fleming in The Red Badge of Courage
Xiaoguang ZHAO,Zhichun YANG
Studies in Literature and Language , 2012, DOI: 10.3968/2931
Abstract: The Red Badge of Courage, written by Stephen Crane, is one of the representative works of American naturalism. It describes and evaluates the American Civil War through the eyes of the protagonist, Henry Fleming. This thesis mainly focuses on the character transformation of the protagonist, and it also briefly analyzes the reasons for his transformation. Key words: The Red Badge of Courage; Henry Fleming; Character transformation
Simulation of Extractive Distillation for Recycling Tetrahydrofuran from Pharmaceutical Wastewater with Chem CAD Software
Xiaoguang Wang,Yueyun Yang
Research Journal of Applied Sciences, Engineering and Technology , 2013,
Abstract: The functions and application of ChemCAD simulation software was introduced. Mathematical model of extraction distillation process was established. The extractive distillation process for preparation of tetrahydrofuran (THF) was simulated by SCDS rectification model in ChemCAD software, methanol-THF-solution and ethanedol-lithium chloride solution as extractant. Influence of extraction agent on vapor-liquid equilibrium curve of methanol-THF system and effects of theoretical plate number, feed and extractant input positions, extraction agent ratio (m(chlorinated lithium): v(ethanediol)), extractant ratio (m (extractant): m(feed)) and reflux ratio on tower top mass fraction of THF were investigated. The results of simulation were compared with experimental data. Under optimum extraction distillation conditions: theoretical plate 30, extractant plate 6, feed plate 18, extraction agent ratio 0.24g/mL, extractant ratio 2.7 and reflux ratio 5.0, mass fraction of THF on tower top can reach 97.2%. The distribution characteristic parameters of the column were simulated. The results of simulation and experimental data agree satisfactorily.
The Hausdorff dimension of the boundary of the immediate basin of infinity of McMullen maps
Fei Yang,Xiaoguang Wang
Mathematics , 2012,
Abstract: In this paper, we give a formula of the Hausdorff dimension of the boundary of the immediate basin of infinity of McMullen maps $f_p(z)=z^Q+p/z^Q$, where $Q\geq 3$ and $p$ is small. This gives a lower bound of the Hausdorff dimension of the Julia sets of McMullen maps in the special cases.
A note on anti-coordination and social interactions
Zhigang Cao,Xiaoguang Yang
Computer Science , 2012, DOI: 10.1007/s10878-012-9486-7
Abstract: This note confirms a conjecture of [Bramoull\'{e}, Anti-coordination and social interactions, Games and Economic Behavior, 58, 2007: 30-49]. The problem, which we name the maximum independent cut problem, is a restricted version of the MAX-CUT problem, requiring one side of the cut to be an independent set. We show that the maximum independent cut problem does not admit any polynomial time algorithm with approximation ratio better than $n^{1-\epsilon}$, where $n$ is the number of nodes, and $\epsilon$ arbitrarily small, unless P=NP. For the rather special case where each node has a degree of at most four, the problem is still MAXSNP-hard.
Complementary cooperation, minimal winning coalitions, and power indices
Zhigang Cao,Xiaoguang Yang
Computer Science , 2009, DOI: 10.1016/j.tcs.2012.11.033
Abstract: We introduce a new simple game, which is referred to as the complementary weighted multiple majority game (C-WMMG for short). C-WMMG models a basic cooperation rule, the complementary cooperation rule, and can be taken as a sister model of the famous weighted majority game (WMG for short). In this paper, we concentrate on the two dimensional C-WMMG. An interesting property of this case is that there are at most $n+1$ minimal winning coalitions (MWC for short), and they can be enumerated in time $O(n\log n)$, where $n$ is the number of players. This property guarantees that the two dimensional C-WMMG is more handleable than WMG. In particular, we prove that the main power indices, i.e. the Shapley-Shubik index, the Penrose-Banzhaf index, the Holler-Packel index, and the Deegan-Packel index, are all polynomially computable. To make a comparison with WMG, we know that it may have exponentially many MWCs, and none of the four power indices is polynomially computable (unless P=NP). Still for the two dimensional case, we show that local monotonicity holds for all of the four power indices. In WMG, this property is possessed by the Shapley-Shubik index and the Penrose-Banzhaf index, but not by the Holler-Packel index or the Deegan-Packel index. Since our model fits very well the cooperation and competition in team sports, we hope that it can be potentially applied in measuring the values of players in team sports, say help people give more objective ranking of NBA players and select MVPs, and consequently bring new insights into contest theory and the more general field of sports economics. It may also provide some interesting enlightenments into the design of non-additive voting mechanisms. Last but not least, the threshold version of C-WMMG is a generalization of WMG, and natural variants of it are closely related with the famous airport game and the stable marriage/roommates problem.
Selfish Bin Covering
Zhigang Cao,Xiaoguang Yang
Computer Science , 2009, DOI: 10.1016/j.tcs.2011.09.017
Abstract: In this paper, we address the selfish bin covering problem, which is greatly related both to the bin covering problem, and to the weighted majority game. What we mainly concern is how much the lack of coordination harms the social welfare. Besides the standard PoA and PoS, which are based on Nash equilibrium, we also take into account the strong Nash equilibrium, and several other new equilibria. For each equilibrium, the corresponding PoA and PoS are given, and the problems of computing an arbitrary equilibrium, as well as approximating the best one, are also considered.
Morphological and electrophysiological evidence for regeneration of transected spinal cord fibers and restoration of motor functions in adult rats
Xiaoguang Li,Zhaoyang Yang,Yi Yang
Chinese Science Bulletin , 2006, DOI: 10.1007/s11434-006-0918-6
Abstract: After 2/3 transection of the right ninth thoracic spinal cord of an adult rat, a chitosan tube seeded with L-poly-lysine was implanted between the rostral and caudal end of the lesioned cord. Twelve months after the operation, regeneration of myelinated and non-myelinated axons and new blood vessels were observed along the wall of the chitosan tube implanted under an electron microscope. Somatosensory evoked potentials (SEP) could be consistently recorded from the left somatosensory cortex following electrical stimulation of the right hind limb, while transcranial magnetic stimulation of the left motor cortex could also evoke motor activity from the right hind limb. The present result suggests that implanted chitosan tube might be useful in regeneration of injured nerve fibers of the spinal cord resulting in a long-term restoration of motor functions.
Stabilization of Neoclassical Tearing Modes by rf Current  [PDF]
Xiaojing Wang, Xiaodong Zhang, Qingquan Yu, Yang Zhang, Sizheng Zhu, Xiaoguang Wang, Bin Wu
World Journal of Engineering and Technology (WJET) , 2017, DOI: 10.4236/wjet.2017.54B011
Abstract:
Neoclassical tearing mode (NTM) can degrade plasma confinement or even cause disruptions in existing tokamaks. Stabilization of the NTMs by radio frequency (rf) current is investigated by the modified Rutherford equation (MRE) in this paper. In a range of parameters, the required rf current for mode stabilization is obtained, which is linearly proportional to the bootstrap current density for both modulated current drive (MCD) and non-modulated current drive (NMCD), linearly (quadratically) to the radial width of the rf current for MCD (NMCD), and quadratically to the radial deviation of the rf current from the rational surface for both MCD and NMCD.
Effects of the CNTF-collagen gel-controlled delivery system on rat neural stem/progenitor cells behavior
ZhaoYang Yang,Hui Qiao,XiaoGuang Li
Science China Life Sciences , 2010, DOI: 10.1007/s11427-010-0093-5
Abstract: The injury of central nervous system (CNS) usually causes the cavity formation. Although transplantation of neural stem/precursor cells (NSPCs) into the lesioned area of CNS has been shown to be implicated in the functional restoration, the therapeutic result is limited by the poor survival of NSPCs as well as their insufficient proliferation and differentiation abilities. Type-1 collagen is considered as a candidate scaffold or drug delivery system to overcome the aforementioned obstacle. This study observed the effects of the CNTF (ciliary neurotrophic factor)-collagen gel-controlled delivery system and daily addition of soluble-form CNTF on the NSPC survival, migration, proliferation and differentiation. The results showed that, within 12 h of the initial co-culture, CNTF was released in a burst pattern, then the CNTF-collagen gel-controlled delivery system stably released CNTF for up to 12 d. The cell viability test, together with immunohistochemistry, RT-PCR and Western blotting, showed that the CNTF-collagen gel-controlled delivery system supported the NSPCs seeded on the surface of collagen gel survival and facilitated their migration and proliferation. The daily addition of soluble-form CNTF to the medium had similar effects to the CNTF-collagen gel-controlled delivery system, but large quantities of soluble-form CNTF were consumed during the entire process. Taken together, the CNTF-collagen gel-controlled delivery system not only provides a physical scaffold for the transplanted NSPCs to adhere and migrate, but also facilitates the NSPC survival, growth and proliferation, simultaneously reducing the consumption of the expensive growth factors. This system may be used to enhance the microenvironment in the lesioned area of CNS.
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