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Search Results: 1 - 10 of 6591 matches for " Shihan Hou "
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Analysis on Bilingual Public Signs in the View of Audience Theory—A Case Study of City Traffic Public Signs in Xi’an  [PDF]
Wenmin Li, Xue Wang, Shihan Hou
Open Journal of Modern Linguistics (OJML) , 2015, DOI: 10.4236/ojml.2015.52014
Abstract: This paper, with the audience theory as its theoretical guide and by taking a case study on Bilingual traffic Public Signs in Xi’an, especially on bilingual station names of Xi’an Metro Line 2, first briefly discusses how an important role city traffic public signs play in serving the audience, facilitating tourism as well as disseminating Chinese culture through the international audience. Second, it analyzes the problems existing in the present bilingual public signs in China and the counter-productive effects they are likely to bring about. And finally proposal for a new system of bilingual station names of Xi’an Metro Line 2 is put forward, which, the author believes, will not only offer the exact information wanted but make the audience abroad feel at home.
Relationship between the geometric features of carbon steel cavitation erosion debris and the cavitation erosion stages
ShiHan Liu,DaRong Chen
Chinese Science Bulletin , 2010, DOI: 10.1007/s11434-009-0260-x
Abstract: The debris produced in vibration cavitation tests of three kinds of carbon steel were collected. Their geometric features were analyzed quantitatively and observed respectively by a profilometer and a scanning electronic microscope (SEM) with reference to the investigation of the cavitation damaged surface by SEM and X-ray diffraction (XRD). It was found that among the debris produced in all cavitation erosion stages, more than 45% were platelets because of the occurrence of dislocation and cleavage fracture, and only less than 25% were strands. The number of granule was small in the first cavitation erosion stage and increased rapidly to the number comparable with that of platelets in the next stage, and then reduced in the third stage. The sphericity values of the debris varied in accordance with the stages of cavitation damage, which were 0.3–0.4 in the incubation stage, 0.5–0.7 in the acceleration stage and not less than 0.5 in the maximum rate stage, although a slight decrease occurred in the third stage.
Lagrangian quantum turbulence model based on alternating superfluid/ normal fluid stochastic dynamics
Shihan Miah,Christian Beck
Physics , 2014, DOI: 10.1209/0295-5075/108/40004
Abstract: Inpired by recent measurements of the velocity and acceleration statistics of Lagrangian tracer particles embedded in a turbulent quantum liquid we propose a new superstatistical model for the dynamics of tracer particles in quantum turbulence. Our model consists of random sequences S/N/S/... where the particle spends some time in the superfluid (S) and some time in the normal fluid (N). This model leads to a superposition of power law distributions generated in the superfluid and Gaussian distributions in the normal liquid, in excellent agreement with experimental measurements. We include memory effects into our analysis and present analytic predictions for probability densities and correlation functions.
Statistics of Lagrangian quantum turbulence
Christian Beck,Shihan Miah
Physics , 2012, DOI: 10.1103/PhysRevE.87.031002
Abstract: We consider the dynamics of small tracer particles in turbulent quantum liquids. The complicated interaction processes of vortex filaments, the quantum constraints on vorticity and the varying influence of both the superfluid and the normal fluid on the tracer particle effectively lead to a superstatistical Langevin-like model that in a certain approximation can be solved analytically. An analytic expression for the PDF of velocity v of the tracer particle is derived that exhibits not only the experimentally observed $v^-3$ tails but also the correct behavior near the center of the distribution, in excellent agreement with experimental measurements and numerical simulations. Our results are universal and do not depend on details of the quantum fluid.
Relationship between the geometric features of carbon steel cavitation erosion debris and the cavitation erosion stages

ShiHan Liu,DaRong Chen,

科学通报(英文版) , 2010,
Abstract: The debris produced in vibration cavitation tests of three kinds of carbon steel were collected.Their geometric features were analyzed quantitatively and observed respectively by a profilometer and a scanning electronic microscope(SEM) with reference to the investigation of the cavitation damaged surface by SEM and X-ray diffraction(XRD) .It was found that among the debris produced in all cavitation erosion stages,more than 45%were platelets because of the occurrence of dislocation and cleavage fracture,and...
Effect of roughness and wettability of silicon wafer in cavitation erosion
NaNa Jiang,ShiHan Liu,DaRong Chen
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0375-5
Abstract: Material damage of silicon wafer with different roughness and wettability was investigated by using the self-made vibration cavitation apparatus in de-ionized water. Various roughness and wettability of silicon wafer were achieved by changing their morphology and depositing Au, diamond-like carbon films (DLC films) on them. Surface morphology was observed with a scanning electron microscope (SEM) and a surface profilometer, and wettability was characterized by the contact angle measurement. The cavitation erosion results showed that many tiny pits and cracks appeared on the wafer surface as a result of brittle fractures; the number and size of the pits and cracks increased with experiment time, which made material flake away finally; cavitation occurred more easily on the silicon wafer surface with the augment of roughness or contact angle by changing surface morphology or depositing Au, DLC thin film on it, which consequently aggravated cavitation damage.
SNPs and TFBS Associated with High Altitude Sickness*  [PDF]
Norman E. Buroker, Xuehan Ning, Zhaonian Zhou, Kui Li, Weijun Cen, Xiufeng Wu, Weizhong Zhu, C. Ronald Scott, Shihan Chen
Open Journal of Blood Diseases (OJBD) , 2013, DOI: 10.4236/ojbd.2013.33018
Abstract: The rSNPs for the genes AKT3 (rs4590656), EGLN1 (rs480902), eNOS3 (rs1007311), and VEGFA (rs699947, rs13207311, rs1570360, rs2010963) have been significantly associated with the physiological parameters in high altitude sickness Han or Tibetan Chinese patients at the Qinghai-Tibetan plateau. The alleles of each rSNP have been found to create unique transcriptional factor binding sites for transcription factors that affect the process of hypoxia gene expression in this high altitude hypoxia environment.
Affected zone generated around the erosion pit on carbon steel surface at the incipient stage of vibration cavitation
HaoSheng Chen,Jiang Li,ShiHan Liu,DaRong Chen,JiaDao Wang
Chinese Science Bulletin , 2008, DOI: 10.1007/s11434-008-0105-z
Abstract: The characteristics of erosion pits on a carbon steel surface were investigated at the incipient stage of cavitation erosion. After a 5-minute experiment performed in an ultrasonic vibration system, needle-like erosion pits appeared on the polished steel surface, and a specially affected zone was formed around the pit. The shape of the pit and the plastic deformation of the affected zone indicate that the mechanical impaction on the surface is the main reason for the cavitation damage. On the other hand, the iridescent color, the decreased surface hardness and the precipitated carbides on the affected zone prove that the affected zone has experienced a tempering process with the temperature higher than 300°C. The lack of oxygen in the affected zone also proves that it is not a chemical oxygen result. A special phenomenon that a carbon ring forms in the affected zone is explained as a result of the toroidal bubbles’ heating effect at the final stage of the bubble collapse.
Automata-Based Analysis of Stage Suspended Boom Systems
Anping He,Jinzhao Wu,Shihan Yang,Yongquan Zhou
Journal of Applied Mathematics , 2013, DOI: 10.1155/2013/739253
Abstract:
Lossy-to-Lossless Compression of Hyperspectral Image Using the 3D Set Partitioned Embedded ZeroBlock Coding Algorithm  [PDF]
Ying Hou
Journal of Software Engineering and Applications (JSEA) , 2009, DOI: 10.4236/jsea.2009.22013
Abstract: In this paper, we propose a three-dimensional Set Partitioned Embedded ZeroBlock Coding (3D SPEZBC) lossy-to-lossless compression algorithm for hyperspectral image which is an improved three-dimensional Embedded ZeroBlock Coding (3D EZBC) algorithm. The algorithm adopts the 3D integer wavelet packet transform proposed by Xiong et al. to decorrelate, the set-based partitioning zeroblock coding to process bitplane coding and the con-text-based adaptive arithmetic coding for further entropy coding. The theoretical analysis and experimental results demonstrate that 3D SPEZBC not only provides the same excellent compression performances as 3D EZBC, but also reduces the memory requirement compared with 3D EZBC. For achieving good coding performance, the diverse wave-let filters and unitary scaling factors are compared and evaluated, and the best choices were given. In comparison with several state-of-the-art wavelet coding algorithms, the proposed algorithm provides better compression performance and unsupervised classification accuracy.
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