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Search Results: 1 - 10 of 38081 matches for " Weikang Lin "
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Translational Chinese Medicine: A Way for Development of Traditional Chinese Medicine  [PDF]
Xuegang Sun, Donglan Lin, Weikang Wu, Zhiping Lv
Chinese Medicine (CM) , 2011, DOI: 10.4236/cm.2011.24029
Abstract: Translational Chinese medicine is one of the latest developing fields in traditional Chinese medicine. In this paper, we discuss the “3 w” namely, “what is”, “why to advance”, “how to carry out” and the significance of translational Chinese medicine. To overcome the innate drawbacks of traditional Chinese medicine (TCM), the basic theory of TCM had better be refreshed. The safety and efficacy of classic formulae and therapy experience of TCM should be evaluated based on strict quality control and reaffirmed with evidence based medicine. The significance of translational Chinese medicine is to transform Chinese medicine into a balanced, personalized medicine with sound safety, good efficacy and strict quality control.
非饱和混合土动剪切模量与阻尼比试验研究
Experimental Study on Dynamic Shear Modulus and Damping Ratio for Unsaturated Mixed Soil

崔凯, 林维康
CUI Kai
, LIN Weikang

- , 2016, DOI: 10.3969/j.issn.0258-2724.2016.05.028
Abstract: 川西山区广泛分布着崩坡积混合土,且在自然条件下常处于非饱和状态。动剪切模量和阻尼比是进行场地地震反应分析时必不可少的动力特性参量。为研究该地区上述两个参数的影响因素,运用动三轴仪,获取了小应变范围内循环荷载作用下混合土动应力应变骨干曲线、滞回曲线,拟合得到动剪切模量/最大动剪切模量-剪应变幅值和阻尼比-剪应变幅值曲线,系统研究了两个曲线函数随含水量和细颗粒含量的变化规律。研究结果表明:饱和程度和细颗粒含量对动剪切模量和阻尼比有显著影响,其影响程度还与矿物成分有关;在对比分析基础上,提出适用于崩坡积混合土在饱和、非饱和状态下的动剪切模量比和阻尼比推荐值,为川西山区地震安全评估提供参数取值依据。
: Talus mixed soil, widely distributed throughout the Western Sichuan mountainous area, is often unsaturated in nature. Dynamic shear modulus and damping ratio are essential parameters of the dynamic properties in the analysis of seismic response. In order to study the influential factors on these two parameters, dynamic triaxial apparatus was used to obtain the dynamic backbone curve and hysteresis curve of mixed soil under cyclic loading with small strain, as well as fitted Gd/Gmax-γ and λ-γ curves. The functions of two curves varying with the water content and the fine particle content were analyzed. The research results show that the saturation and fine particle content have significant effects on the dynamic shear modulus and damping ratio, and mineral constituents also play a role in the changes of these two parameters. Based on the comparative analysis, the recommended values of dynamic shear modulus ratio and damping ratio suitable were provided for talus mixed soil in saturation and non-saturation states
Energy release from hadron-quark phase transition in neutron stars and the axial $w$-mode of gravitational waves
Weikang Lin,Bao-An Li,Jun Xu,Che Ming Ko,De-Hua Wen
Physics , 2010, DOI: 10.1103/PhysRevC.83.045802
Abstract: Describing the hyperonic and quark phases of neutron stars with an isospin- and momentum-dependent effective interaction for the baryon octet and the MIT bag model, respectively, and using the Gibbs conditions to construct the mixed phase, we study the energy release due to the hadron-quark phase transition. Moreover, the frequency and damping time of the first axial $w$-mode of gravitational waves are studied for both hyperonic and hybrid stars. We find that the energy release is much more sensitive to the bag constant than the density dependence of the nuclear symmetry energy. Also, the frequency of the $w$-mode is found to be significantly different with or without the hadron-quark phase transition and depends strongly on the value of the bag constant. Effects of the density dependence of the nuclear symmetry energy become, however, important for large values of the bag constant that lead to higher hadron-quark transition densities.
Breaking the EOS-Gravity Degeneracy with Masses and Pulsating Frequencies of Neutron Stars
Weikang Lin,Bao-An Li,Lie-Wen Chen,De-Hua Wen,Jun Xu
Physics , 2013, DOI: 10.1088/0954-3899/41/7/075203
Abstract: A thorough understanding of many astrophysical phenomena associated with compact objects requires reliable knowledge about both the equation of state (EOS)of super-dense nuclear matter and the theory of strong-field gravity simultaneously because of the EOS-gravity degeneracy. Currently, variations of the neutron star (NS) mass-radius correlation from using alternative gravity theories are much larger than those from changing the NS matter EOS within known constraints. At least two independent observables are required to break the EOS-gravity degeneracy. Using model EOSs for hybrid stars and a Yukawa-type non-Newtonian gravity, we investigate both the mass-radius correlation and pulsating frequencies of NSs. While the maximum mass of NSs increases, the frequencies of the $f$, $p_1$, $p_2$, and $w_I$ pulsating modes are found to decrease with the increasing strength of the Yukawa-type non-Newtonian gravity, providing a useful reference for future determination simultaneously of both the strong-field gravity and the supranuclear EOS by combining data of x-ray and gravitational wave emissions of neutron stars.
On GID-testable two-dimensional iterative arrays
On GID-Testable Two-Dimensional Iterative Arrays

Weikang Huang,F Lombard,
Huang WeiKang
,F.Lombard

计算机科学技术学报 , 1994,
Abstract: A new approach is presented for easily testable two-dimensional iterative arrays.It is an improvment on GI-testability (Group Identical testability) and is referred to as GID-testability (Group Identical and Different testability). In a GID-testable twodimensional array, the primary x and y outputs are organized into groups and every group has more than one output. This is similar to the GI-testable arrays. However,GID-testability not only ensures that identical test responses can be obtained from every output in the same group when an array is fault free, but also ensures that at least one output has different test responses (from the other outputs in a group) when a cell in the array is faulty Therefore, all faults can be detected under the assumption of a single faulty cell model. It is proved that an arbitrary two-dimensional iterative array is GID-testable if seven x-states and seven y-states are added to the original flow table of the basic cell of the array.GID-testability simplifies the response verification of built-in-self testing in a way similar to PL- and GI-testability6-9]. Therefore, it is suitable for BIST design.
Repairing VLSI/WSI Redundant Memories with Minimum Cost
Huang Weikang,F.Lombardi
计算机科学技术学报 , 1990,
Abstract: A new approach to repair memory chips with redundancy is proposed.This approach s based on the minimization of the repair cost.Algorithms for cost driven repair are presented.The algorithms can be executed either on -line(concurrently with the testing of the memory),or off-lin(at completion of testing).Analytical expressions for the repair cost under both circumstances are given.The presented algorithms are also perfect in the sense that they can correctly diagnose a repairable/unrepairable memory and find the optimal repair-solution.
Limits to the fraction of high-energy photon emitting gamma-ray bursts
Carl W. Akerlof,WeiKang Zheng
Physics , 2012, DOI: 10.1088/0004-637X/764/2/190
Abstract: After almost 4 years of operation, the two instruments onboard the Fermi Gamma-ray Space Telescope have shown that the number of gamma-ray bursts with high energy photon emission above 100 MeV cannot exceed roughly 9% of the total number of all such events, at least at the present detection limits. In a recent paper (Zheng et al. 2012c), we found that GRBs with photons detected in the Large Area Telescope (LAT) have a surprisingly broad distribution with respect to the photon number above background. Extrapolation of our empirical fit to numbers of photons below our quoted detection limit suggests that the overall rate of such events could be determined by standard image co-adding techniques. In this case, we have taken advantage of the excellent angular resolution of the Swift mission to provide accurate reference points for 79 GRB events which have eluded any previous correlations with high energy photons. We find a small but significant signal. Guided by the power law fit obtained previously for the number distribution of GRBs, the data suggests that only a small fraction of GRBs are sources of high energy photons.
The Structural Difference of Shanghai Stock Index before and after 2008: A Copula Based Analysis  [PDF]
Chuan Wu, Ke Huang, Xue Tian, Weikang Geng, H. J. Cai
Technology and Investment (TI) , 2012, DOI: 10.4236/ti.2012.34035
Abstract: The year 2008 witnessed the greatest joint stock reform and financial crisis in Chinese history. After these two cases, significant changes have taken place in investors’ behaviors worldwide, along with which is the occurrence of structure change in stock market. In this paper, we employ copula model to simulate the joint distribution between Shanghai Stock Index (SSE) and Chinese Shanghai Index 300 (CSI 300), to find out structure change in Chinese stock market before and after 2008. From results of empirical studies, we get conclusions that the main nature of Chinese stocks market is symmetric, in both marginal and joint distributions. Via the changes of Copula types, upper and lower tail coefficients and Kendall coefficients, we can measure the structure change in Chinese stock market, and get further conclusion about investors’ behaviors change. Before 2008, there is an equal power in quitting market and longing, while diversified investors adjusted their expectation uniformly after this year. Testing results show that the general dependence structure of CSI 300 and SSE is highly dependent and symmetric in most cases. From the distribution of upper and lower tail coefficients, we can draw the conclusion that stratified investors are mainly focused on two tasks, after this year, to close the position on stocks with high correlated stocks market and to maintain market value of stocks.
Natural diet and food habitat use of the Tarim red deer, Cervus elaphus yarkandensis
Jianfang Qiao,Weikang Yang,Xingyi Gao
Chinese Science Bulletin , 2006, DOI: 10.1007/s11434-006-8219-7
Abstract: In order to determine the natural diet and food habitat use of Tarim red deer (Cervus elaphus yarkandensis), a study was carried out in Qiemo, Xinjiang, China from October 2000 to June 2001. Direct observation combined with faecal analysis method was used to determine the natural diet of red deer. 15 different species of plant were identified as food items. Among them, 13 species of plants were identified in winter diet and 9 species in summer. Red deer consumed a wider range of species in winter because of their nutrient requirement as well as the shortage of food and the scarcity of high-quality forage in the study area. Phragmites communis, Glycyrrhiza inflata and populus diversifolia were frequently present in the deer’s diet whenever in winter and summer. Among them, Phragmites communis was the most abundant plant in the area and was included in the deer’s diet. Observation on food selection frequency of captive Tarim red deer showed that Populus diversifolia was the first preferred species. However, this food was limited in the study area. Five food habitat types were found in the study area according to plant association: (1) Phragmites communis-Tamarix ramosissima association, (2) Tamarix ramosissima-Halostachys caspica association, (3) Tamarix ramosissima-Phragmites communis association, (4) Populus diversifolia-Phragmites communis association, (5) Burned area. Among them, Phragmites communis-Tamarix ramosissima association (reed meadow and reed marsh) was preferred to other types within the study area whenever in summer and winter. Dense reed cover could reduce the chance of detection from predator and obstruct attack from predator. Furthermore, under the cover of the reed, Tarim red deer was protected from direct solar radiation during the hours of hot day in summer. The reed meadow and marsh was preferred, presumably because the red deer could minimize their movements while searching for food, water and cover.
In Exploration of Unsteady Dynamics of Powered-Vacuum Fluidic Conveyance
Sun Gang,Zhang Weikang,Alex H. LEO
Lecture Notes in Engineering and Computer Science , 2009,
Abstract:
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