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Search Results: 1 - 10 of 57799 matches for " Ming Feng "
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Local Correlated Noise Improvement of Signal-to-Noise Ratio Gain in an Ensemble of Noisy Neuron  [PDF]
Tianquan Feng, Qingrong Chen, Ming Yi
Journal of Intelligent Learning Systems and Applications (JILSA) , 2018, DOI: 10.4236/jilsa.2018.103007
Abstract: We theoretically investigate the collective response of an ensemble of leaky integrate-and-fire neuron units to a noisy periodic signal by including local spatially correlated noise. By using the linear response theory, we obtained the analytic expression of signal-to-noise ratio (SNR). Numerical simulation results show that the rms amplitude of internal noise can be increased up to?an optimal value where the output SNR reaches a maximum value. Due to the existence of the local spatially correlated noise in the units of the ensemble, the SNR gain of the collective ensemble response can exceed unity and can be optimized when the nearest-neighborhood correlation is negative. This nonlinear collective phenomenon of SNR gain amplification in an ensemble of leaky integrate-and-fire neuron units can be related to the array stochastic resonance (SR) phenomenon. Furthermore, we also show that the SNR gain can also be optimized by tuning the number of neuron units, frequency and?amplitude of the weak periodic signal. The present study illustrates the potential to utilize the local spatially correlation noise and the number of ensemble units for optimizing the collective response of the neuron to inputs, as well as a guidance in the design of information processing devices to weak signal detection.
The Lee-Wick Fields out of Gravity
Wu, Feng;Zhong, Ming
High Energy Physics - Phenomenology , 2007, DOI: 10.1016/j.physletb.2007.11.082
Abstract: We study the Maxwell-Einstein theory in the framework of effective field theories. We show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a Lee-Wick vector field as an extra degree of freedom in the theory. Thus gravity provides a natural mechanism for the emergence of this exotic particle.
Correction to the Running of Gauge Couplings out of Extra Dimensional Gravity
Wu, Feng;Zhong, Ming
High Energy Physics - Phenomenology , 2008,
Abstract: We study the gravitational correction to the gauge couplings in the extra dimension model where the gravity propagates in the (4+n)-dimensional bulk. We show by explicit calculation in the background field method that the one-loop correction coming from graviton Kaluza-Klein states is nontrivial and tends to make the theory anti-asymptotically free. For the theory characterized with asymptotic freedom, the correction will induce a nontrivial UV-stable fixed point. This may lead to an interesting possibility that the non-abelian gauge coupling constants $g_2$ and $g_3$ in the SM and that of the gravity $g_{\kappa}$ unify at the fixed point in the limit of high energy scale.
TeV Scale Lee-Wick Fields out of Large Extra Dimensional Gravity
Wu, Feng;Zhong, Ming
High Energy Physics - Phenomenology , 2008, DOI: 10.1103/PhysRevD.78.085010
Abstract: We study the gravitational corrections to the Maxwell, Dirac and Klein-Gorden theories in the large extra dimension model in which the gravitons propagate in the (4+n)-dimensional bulk, while the gauge and matter fields are confined to the four-dimensional world. The corrections to the two-point Green's functions of the gauge and matter fields from the exchanges of virtual Kaluza-Klein gravitons are calculated in the gauge independent background field method. In the framework of effective field theory, we show that the modified one-loop renormalizable Lagrangian due to quantum gravitational effects contains a TeV scale Lee-Wick partner of every gauge and matter field as extra degrees of freedom in the theory. Thus the large extra dimension model of gravity provides a natural mechanism to the emergence of these exotic particles which were recently used to construct an extension of the Standard Model.
1,4-Dihydroquinoxaline-2,3-dione–5-nitroisophthalic acid–water (1/1/1)
Ming-Feng Wang
Acta Crystallographica Section E , 2011, DOI: 10.1107/s1600536811020873
Abstract: The asymmetric unit of the title compound, C8H6N2O2·C8H5NO6·H2O, contains molecules of 1,4-dihydroquinoxaline-2,3-dione, 5-nitroisophthalic acid and a solvent water. In the crystal structure, molecules are linked into a three-dimensional network by intermolecular N—H...O and O—H...O hydrogen bonds.
Using Simulation to Object-Oriented Order Picking System
Ming- Feng Yang
Information Technology Journal , 2008,
Abstract: Simulation is one of the most frequently used techniques for production system study and design. Simulation created by an object-oriented program has the advantages of hierarchical structures, inheritance, polymorphism and object re-use. This study uses eM-plant, the standard object-oriented software to model the order picking system. Order picking is an essential operation and the major cost constituent of the distribution center. This study attempts to provide the warehouse manager with order picking and operation; examines several storage assignment policies and several sensitivity analyses. The simulation experiment results can offer reference bases for warehouse administrator decision-making.
To accomplish preliminary Qigong simulation state by acupuncture
Feng-Ming Ho
Zhong Xi Yi Jie He Xue Bao , 2011,
Abstract: Objective: The purpose of the study was to find out how to enter the preliminary Qigong simulation state in a short period of time. Methods: This is a non-randomized, human experiment with healthy participants. A multi-channel digital physiological data recorder was used to detect whether the participants had entered the Qigong state. Participants were assisted to enter the Qigong state (relaxation, tranquility and naturalness) by being given the sore (sour) feeling produced by acupuncturing Hegu (LI4), and suggestions (repeating words “relax” and “heat” from the hypogastrium). Results: About 72.2% of the participants who had no Qigong experience were found entering the preliminary Qigong simulation state. Most of the physiological parameters measured after the participants entering the Qigong state showed significant changes compared with the baseline data.Conclusion: This study revealed that acupuncture-made sore feeling is able to induce the participants to quickly enter the preliminary Qigong simulation state; hence this can be seen as no longer a limited phenomenon, but can be commonly applied to everybody.
Reader Stance and a Focus on Gender Differences
Feng-ming Chi
English Language Teaching , 2009, DOI: 10.5539/elt.v2n4p82
Abstract: The purpose of this paper, drawing data from a large research base, was to investigate how and why Taiwanese EFL (English as a Foreign Language) male and female university students responded to feminist texts differently. These participants were taking an elective course titled Gender and Reading while this research was conducted. Weekly reading journal entries were used for data analysis. Idea units were first used to categorize participants’ journal entries; relevant idea units were grouped together, and then organized into stances for discussion. Four stances–textual, evaluative, reflective, and resistant–were generated for interpretation. Comparative content analysis was then applied to contrast male and female participants’ stances while responding to feminist texts. Some pedagogical implications are suggested for classroom practice.
Correction to the Running of Gauge Couplings out of Extra Dimensional Gravity
Feng Wu,Ming Zhong
Physics , 2008,
Abstract: We study the gravitational correction to the gauge couplings in the extra dimension model where the gravity propagates in the (4+n)-dimensional bulk. We show by explicit calculation in the background field method that the one-loop correction coming from graviton Kaluza-Klein states is nontrivial and tends to make the theory anti-asymptotically free. For the theory characterized with asymptotic freedom, the correction will induce a nontrivial UV-stable fixed point. This may lead to an interesting possibility that the non-abelian gauge coupling constants $g_2$ and $g_3$ in the SM and that of the gravity $g_{\kappa}$ unify at the fixed point in the limit of high energy scale.
Tuning Fe Nucleation Density with Charge Doping of Graphene Substrate
Wenmei Ming,Feng Liu
Physics , 2014, DOI: 10.1063/1.4893947
Abstract: We have demonstrated that the island nucleation in the initial stage of epitaxial thin film growth can be tuned by substrate surface charge doping. This charge effect was investigated using spin density functional theory calculation in Fe-deposition on graphene substrate as an example. It was found that hole-doping can apparently increase both Fe-adatom diffusion barrier and Fe inter-adatom repulsion energy occurring at intermediate separation, whereas electron-doping can decrease Fe-adatom diffusion barrier but only slightly modify inter-adatom repulsion energy. Further kinetic Monte Carlo simulation showed that the nucleation island density can be increased up to ten times larger under hole-doping and can be decreased down to ten times smaller than that without doping. Our findings indicates a new route to tailoring the growth morphology of magnetic metal nanostructure for spintronics applications via surface charge doping.
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