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A Reflection on the 2017 Nobel Prize for Physiology and Chinese Medicine

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Chinese Journal of Integrative Medicine 2020年第11期26卷 867-872页

作者： xing Meng QU Ke-shen HUANG Yu xing Yu-rui Department of Dermatology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai(200437)China Department of Chinese Medicine Surgery Longhua HospitalShanghai University of Traditional Chinese MedicineShanghai(200032)China Shaanxi University of Chinese Medicine Xi'an(712046)China

Research on the molecular mechanisms controlling circadian rhythm in Western medicine is comparable to the study of a day-night rhythm in Chinese medicine(CM),as also focus on the same life *** comparing the two,this paper elaborates on the differences between them in their respective issues of consciousness,ways of thinking,research methods and research *** speaking,Nobel Prize research has a stronger sense of the problems and concerns about the essence of“what”,while CM focuses on“how a thing functions”.The former mainly adopts experimental and mathematical methods,while the latter primarily depends on observation and *** natural philosophy and natural science eventually lead to the results and the inevitable,quantitative and qualitative *** on the life rhythm in CM should be proposed,scientific problems should be fully grasped,and research should be carried out with the aid of multidisciplinary new knowledge and new achievements through cross-disciplinary *** the basis of clinical epidemiological research and experimental research,a systematic review should be made of the human physiology of CM and the pathological rhythm model to explore the regulatory mechanism of time rhythm and create a new theory of time medicine.

关键词： Nobel Prize Chinese medicine contrast between Chinese medicine and Western medicine

Analysis on a Finite Volume Element Method for Stokes Problems

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Acta Mathematicae Applicatae Sinica 2005年第3期21卷 359-372页

作者： Hong-xing rui School of Mathematics and Systems Science Shandong University Jinan 250100 China

Finite volume element method for the Stokes problem is considered. We use a conforming piecewise linear function on a fine grid for velocity and piecewise constant element on a coarse grid for pressure. For general triangulation we prove the equivalence of the finite volume element method and a saddle-point problem, the inf-sup condition and the uniqueness of the approximation solution. We also give the optimal order H^1 norm error estimate. For two widely used dual meshes we give the L^2 norm error estimates, which is optimal in one case and quasi-optimal in another ease. Finally we give a numerical example.

关键词： Finite volume element Stokes problem numerical analysis

A novel texture clustering method based on shift invariant DWT and locality preserving projection

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维普期刊数据库

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第2期10卷 247-252页

作者： rui xing San-yuan ZHANG Le-qing ZHU School of Computer Science and Technology Zhejiang University Hangzhou 310027 China

We propose a novel texture clustering method. A classical type of(approximate) shift invariant discrete wavelet transform(DWT),dual tree DWT,is used to decompose texture images. Multiple signatures are generated from the obtained high-frequency bands. A locality preserving approach is applied subsequently to project data from high-dimensional space to low-dimensional space. Shift invariant DWT can represent image texture information efficiently in combination with a histogram signature,and the local geometrical structure of the dataset is preserved well during clustering. Experimental results show that the proposed method remarkably outperforms traditional ones.

关键词： Shift invariant DWT. Texture signature Local preserving clustering Dimension reduction k-means

A Two-grid Method with Expanded Mixed Element for Nonlinear Reaction-diffusion Equations

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Acta Mathematicae Applicatae Sinica 2011年第3期27卷 495-502页

作者： Wei Liu Hong-xing rui Hui Guo School of Mathematics Shandong University Jinan 250100 China School of Mathematics and Information Ludong University Yantai 264025 China ~School of Mathematics and Computational Science China University of Petroleum Dongying 257061 China

Expanded mixed finite element approximation of nonlinear reaction-diffusion equations is discussed. The equations considered here are used to model the hydrologic and bio-geochemical phenomena. To linearize the mixed-method equations, we use a two-grid method involving a small nonlinear system on a coarse gird of size H and a linear system on a fine grid of size h. Error estimates are derived which demonstrate that the error is O（△t ＋ h k＋1 ＋ H 2k＋2 d/2 ）（k ≥ 1）, where k is the degree of the approximating space for the primary variable and d is the spatial dimension. The above estimates are useful for determining an appropriate H for the coarse grid problems.

关键词： two-grid method expanded mixed finite element reaction-diffusion equation nonlinear problem

Motion planning for redundant prismatic-jointed manipulators in the free-floating mode

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Acta Mechanica Sinica 2012年第5期28卷 1449-1456页

作者： Xiao-Dong Liu He-Xi Baoyin xing-rui Ma School of Aerospace Tsinghua University

This paper investigates the motion planning of redundant free-floating manipulators with seven prismatic joints. On the earth, prismatic-jointed manipulators could only position their end-effectors in a desired way. However, in space, the end-effectors of free-floating manipulators can achieve both the desired orientation and desired position due to the dynamical coupling between manipulator and satellite movement, which is formally expressed by linear and angular momentum conservation laws. In this study, a tractable algorithm particle swarm optimization combined with differential evolution （PSODE） is provided to deal with the motion planning of redundant free-floating prismatic-jointed manipulators, which could avoid the pseudo inverse of the Jacobian matrix. The polynomial functions, as argument in sine functions are used to specify the joint paths. The co- efficients of the polynomials are optimized to achieve the desired end-effector orientation and position, and simulta- neously minimize the unit-mass-kinetic energy using the redundancy. Relevant simulations prove that this method pro- vides satisfactory smooth paths for redundant free-floating prismatic-jointed manipulators. This study could help to recognize the advantages of redundant prismatic-jointed space manipulators.

关键词： Motion planning - Prismatic joints - Space manipulators Redundant manipulators Free-floating robots ~Nonholonomic planning

CALCULATING METHOD OF SERIES FOR TRUE ANOMALY OF A SPACECRAFT ELLIPTIC ORBIT

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Applied Mathematics and Mechanics(English Edition) 2005年第11期26卷 1435-1441页

作者：顾晓勤谭朝阳 MA xing-rui Zhongshan College University of Electronic Science and Technology of China Zhongshan 528403 Guangdong Province P. R. China 不详

The transcendental equation of a true anomaly was written in a power series instead of a differential form. When the sufficient condition of the iterative convergence is satisfied, the relationship between the true anomaly and the time was gotten by the iterative method. And for the others, the transcendental equation of an eccentric anomaly was solved by the iterative method. After the eccentric anomaly had been calculated, the relationship between the true anomaly and the time was gotten with the numerical integral method. The approximate equation, which included the first five terms in general expansion, was written for the spacecraft quasi-circular orbit. And the true anomaly as the function of the time was also gotten by the iterative method. The numerical simulation results show that these methods are efficient.

关键词： spacecraft orbit true anomaly eccentric anomaly iterative method

Relationship of tropical-cyclone-induced remote precipitation with tropical cyclones and the subtropical high

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Frontiers of Earth Science 2016年第3期10卷 595-606页

作者： rui xing Zhiying DING Sangjie YOU Haiming XU Key Laboratory of Meteorological Disasters of the Ministry of Education Nanjing University of Information Science & Technology Nanjing 210044 China Department of Atmospheric Sciences Nanjing University of Information Science & Technology Nanjing 210044 China

This study concerns the precipitation induced by a tropical cyclone （TC） before the TC arrives, which will be referred to as TC remote precipitation （TRP）. Based on the distribution characteristics of the non-rotational wind and the divergent-wind vertical circulation related to TC, the subtropical high, and TRP of 45 TRP events during June, July, and August of 2000-2009, the relationships among these three entities （TC, subtropical high, and TRP） can be categorized into four patterns. The first pattern accounts for the highest proportion of the TRP events （59%）, and a conceptual model is then provided for this pattern. The primary characteristics of this model are as follows： TC, the subtropical high, and TRP can interact with each other through the divergent-wind secondary circulation at both sides of the ridge line of the subtropical high （between the subtropical high and TC, and between the subtropical high and TRP）. At the upper level （150 or 200 hPa）, the northward non-rotational wind from the TC converged toward the subtropical high ridge line and subsided, and at 950 hPa the divergent wind from the ridge line of the subtropical high converged toward TC; these constructed the secondary circulation between TC and the subtropical high. In the meantime, the southward non- rotational wind at the upper level （150 or 200hPa） from TRP and the divergent wind at 950hPa from the subtropical high ridge line toward TRP constructed the secondary circulation between TRP and the subtropical high. As TC and TRP interacted with each other, the subtropical high ridge line was usually under the down- draft area of the whole atmosphere. The other three patterns are different from the first pattern mainly in terms of the intensity and position of the non-rotational-wind secondary circulation. The numerical simulation of the Beijing 7.21 rainstorm confirmed the relationship amongTC, the subtropical high, and TRP, indicating that when the interaction weakened, the TRP also weakened

关键词： tropical cyclone,precipitation subtropical high,simulation tropical cyclone remotedivergent wind numerical

Periodic orbits around areostationary points in the Martian gravity field

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Research in Astronomy and Astrophysics 2012年第5期12卷 551-562页

作者： Xiao-Dong Liu Hexi Baoyin xing-rui Ma School of Aerospace Tsinghua University 100084 Beijing China

This study investigates the problem of areostationary orbits around Mars in three-dimensional space. Areostationary orbits are expected to be used to establish a future telecommunication network for the exploration of Mars. However, no artificial satellites have been placed in these orbits thus far. The characteristics of the Martian gravity field are presented, and areostationary points and their linear stability are cal- culated. By taking linearized solutions in the planar case as the initial guesses and utilizing the Levenberg-Marquardt method, families of periodic orbits around areo- stationary points are shown to exist. Short-period orbits and long-period orbits are found around linearly stable areostationary points, but only short-period orbits are found around unstable areostationary points. Vertical periodic orbits around both lin- early stable and unstable areostationary points are also examined. Satellites in these periodic orbits could depart from areostationary points by a few degrees in longitude, which would facilitate observation of the Martian topography. Based on the eigenval- ues of the monodromy matrix, the evolution of the stability index of periodic orbits is determined. Finally, heteroclinic orbits connecting the two unstable areostationary points are found, providing the possibility for orbital transfer with minimal energy consumption.

关键词： planets and satellites: Mars -martian gravity field -- periodic orbit -- areostationary orbits

Design and analysis of a mode-hop-free tunable laser based on etched diffraction grating

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第10期11卷 793-797页

作者： rui-xing ZENG Lei WANG Jian-jun HE Center for Integrated Optoelectronics State Key Lab of Modern Optical Instrumentation Zhejiang University Hangzhou 310027 China

A novel semiconductor laser which can achieve mode-hop-free tuning is proposed. The device consists of an etched diffraction grating （EDG） as a dispersive element to provide the mode selection function and an active waveguide to provide optical gain for the laser. The slab waveguide region of the EDG contains a tuning section covered by an electrode to inject a tuning current, and thus changes the refractive index. Mode-hop-free tuning is achieved by specially designing the shape of the tuning section, so that the tuning rate of the central wavelength reflected by the EDG and the tuning rate of the resonant wavelength of the laser cavity are equal. An optimized tuning section shape is designed to obtain the largest tuning range within a limited current range. Numerical simulation is presented to demonstTate the mode-hop-free tuning operation.

关键词： Semiconductor laser Integrated optics Etched diffraction grating