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Search Results: 1 - 10 of 23609 matches for " Rong Hai "
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Influence of sampling on face measuring system based on composite structured light  [PDF]
Yang Shen, Hai-Rong Zheng
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.28087
Abstract: Human face can be rebuilt to a three-dimensional (3 D) digital profile based on an optical 3D sensing system named Composite Fourier-Transform Profilometry (CFTP) where a composite structured light will be used. To study the sampling effect during the digitization process in practical CFTP, the pectinate function and convolution theorem were introduced to discuss the potential phase errors caused by sampling the composite pattern along two orthogonal directions. The selecting criterions of sampling frequencies are derived and the results indicate that to avoid spectral aliasing, the sampling frequency along the phrase variation direction must be at least four times as the baseband and along the orthogonal direction it must be at least three times as the larger frequency of the two carrier frequencies. The practical experiment of a model face reconstruction verified the theories.
Boundedness of solutions and existence of invariant tori for generalized pendulum type equation
Hai Huang,Rong Yuan
Chinese Science Bulletin , 1997, DOI: 10.1007/BF02882662
catena-Poly[1-[(2-fluorobenzylidene)amino]quinolinium [plumbate(II)-tri-μ-iodido]]
Hai-Rong Zhao
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536811051853
Abstract: The title complex, {(C16H12FN2)[PbI3]}n, consists of 1-[(2-fluorobenzylidene)amino]quinolinium cations and a polymeric PbI3 anion formed by face-sharing PbI6 octahedra. These octahedra form straight and regular infinite chains along the b axis. In the asymmetric unit, one cation and one anionic [PbI3] fragment are observed in general positions. Polymeric chains are produced by the glide plane perpendicular to the a axis.
The Design and Implement of TCP/IP Protocol Cluster on AVR Singlechip  [PDF]
Rong Pan, Hai Zhao, Jialiang Wang, Dan Liu, Penghua Cai
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.38088
Abstract: With the rapid development of the embedded technology, research and implement of the Internet of things will be a new technology revolution, yet the implement of the Internet of things is on the base of the communication between the things. For this reason, realizing the function of communication between singlechip is particularly important. Based on the characteristics of the embedded microcontroller, we analyzed the traditional PC TCP/IP protocol, and appropriately tailored TCP/IP protocol cluster on the basis of the characteristics of embedded singlechip. At last, we realized the reduced TCP/IP protocol cluster suitable for embedded singlechip, on AVR singlechip platform.
Researches on a practical system for concentration detection of human exhaled CO2 gas  [PDF]
Rong-Guo Yan, Bin Ge, Hai-Ming Xie
Journal of Biomedical Science and Engineering (JBiSE) , 2009, DOI: 10.4236/jbise.2009.21004
Abstract: In clinics, especially in the emergency department, carbon dioxide (CO2) is considered as the sixth vital sign in evaluating a patient's medical status. However, its wide applications in developing countries are dissatisfactory due to their high cost compared to their economic growth. In order to develop a practical system for concentration detection of human exhaled CO2 gas for our own, we studied the detection principle based upon the non-dispersive infrared (NDIR) measuring technique and related Lambert-Beer's equation carefully, gave out our functional circuit design of the system, and provided the corresponding graphical user interface (GUI) for CO2 detection. Finally, the experiment shows that it may be a practical system, and will give benefits for the development of our medical care in the future.
Research and Analysis of Structural Hole and Matching Coefficient  [PDF]
Penghua Cai, Hai Zhao, Hong Liu, Rong Pan, Zheng Liu, Hui Li
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.311127
Abstract: Measure is a map from the reality or experimental world to the mathematical world, through which people can more easily understand the properties of entities and the relationship between them. But the traditional software measurement methods have been unable to effectively measure this large-scale software. Therefore, trustworthy measurement gives an accurate measurement to these emerging features, providing valuable perspectives and different research dimensions to understand software systems. The paper introduces the complex network theory to software measurement methods and proposes a statistical measurement methodology. First we study the basic parameters of the complex network, and then introduce two new measurement parameters: structural holes, matching coefficient.
Rong Xia,Hai-Jun Xu
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808013871
Abstract: The asymmetric unit of the title molecule, C9H10N2O, contains two molecules. The fused benzene and imidazole rings are nearly coplanar, the largest deviations from the mean plane being 0.025 (3) at the non-bridgehead imidazole C atom of one molecule and 0.018 (3) at one of the bridgehead C atoms in the other molecule. Intermolecular O—H...N and N—H...O hydrogen bonds result in the formation of a sheet parallel to the (010) plane.
Controlling transition probability from matter-wave soliton to chaos
Qianquan Zhu,Wenhua Hai,Shiguang Rong
Physics , 2008, DOI: 10.1103/PhysRevE.80.016203
Abstract: For a Bose-Einstein condensate loaded into a weak traveling optical superlattice it is demonstrated that under a stochastic initial set and in a given parameter region the solitonic chaos appears with a certain probability. Effects of the lattice depths and wave vectors on the chaos probability are investigated analytically and numerically, and different chaotic regions associated with different chaos probabilities are found. The results suggest a feasible method for eliminating or strengthening chaos by modulating the moving superlattice experimentally.
Discrete chaotic states of a Bose-Einstein condensate
Wenhua Hai,Shiguang Rong,Qianquan Zhu
Physics , 2007, DOI: 10.1103/PhysRevE.78.066214
Abstract: We find the different spatial chaos in a one-dimensional attractive Bose-Einstein condensate interacting with a Gaussian-like laser barrier and perturbed by a weak optical lattice. For the low laser barrier the chaotic regions of parameters are demonstrated and the chaotic and regular states are illustrated numerically. In the high barrier case, the bounded perturbed solutions which describe a set of discrete chaotic states are constructed for the discrete barrier heights and magic numbers of condensed atoms. The chaotic density profiles are exhibited numerically for the lowest quantum number, and the analytically bounded but numerically unbounded Gaussian-like configurations are confirmed. It is shown that the chaotic wave packets can be controlled experimentally by adjusting the laser barrier potential.
Chaotic shock waves of a Bose-Einstein condensate
Wenhua Hai,Qianquan Zhu,Shiguang Rong
Physics , 2008, DOI: 10.1103/PhysRevA.79.023603
Abstract: It is demonstrated that the well-known Smale-horseshoe chaos exists in the time evolution of the one-dimensional Bose-Einstein condensate (BEC) driven by the time-periodic harmonic or inverted-harmonic potential. A formally exact solution of the time-dependent Gross-Pitaevskii equation is constructed, which describes the matter shock waves with chaotic or periodic amplitudes and phases. When the periodic driving is switched off and the number of condensed atoms is conserved, we obtained the exact stationary states and non-stationary states. The former contains the stable non-propagated shock wave, and in the latter the shock wave alternately collapses and grows for the harmonic trapping or propagates with exponentially increased shock-front speed for the antitrapping. It is revealed that existence of chaos play a role for suppressing the blast of matter wave. The results suggest a method for preparing the exponentially accelerated BEC shock waves or the stable stationary states.
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