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.

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.

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.

Abstract:
Reservoir-induced seismicity is a very important issuein the study of geological analysis and eco-environmentalimpact assessment in hydraulic and hydro-power engineering.On the other hand, reservoir-induced seismicity is a necessaryconsideration in the feasibility study of hydropower project.Due to the complexity in the process of reservoir-inducedearthquake and the uncertainty of the influencing factor, therisk assessment can be viewed as a multiple-attribute decisionprocess. Therefore, this paper aims to provide a forecastingapproach towards reservoir induced seismicity, in which twophase procedures are proposed. The first stage utilizes analytichierarchy process (AHP) to obtain the weights of influencingfactors, in the second stage fuzzy comprehensive evaluation(FCE) is applied to determine the dangerous class which areservoir belongs to. This study establishes a hierarchicalmodel in reservoir-induced seismicity risk assessment, realizesthe transformation from qualitative analysis to quantitativeanalysis. In addition, a case study is also presented to make thisapplication more understandable. It shows that the multi-levelfuzzy comprehensive evaluation is very effective in thereservoir induced seismicity risk assessment.

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.

Abstract:
Conformal multiplets of $\phi$ and $\phi^3$ recombine at the Wilson-Fisher fixed point, as a consequence of the equations of motion. Using this fact and other constraints from conformal symmetry, we reproduce the lowest nontrivial order results for the anomalous dimensions of operators, without any input from perturbation theory.

Abstract:
A new method is proposed for the effective roughness length (ERL) in heterogeneous terrain basedon the principle of equalization of momentum or heat fluxes calculated by the drag coefficient parameter-ization scheme used in the ECMWF numerical model. Compared with the area-weighted logarithmicallyaveraged ERL (drag coefficient), the newly calculated ERL (drag coefficient) is about 40% (16%) largerwith a roughness step of 2.3. These differences reach their maximum values when the ratio of smooth torough surface is 60% to 40%. Since the determination by this method is not sensitive to the atmosphericstratification, it is suitable for use in climate models.

Abstract:
A MEMS flow sensor was proposed to enhance the reliability and accuracy of liquid dispensing system. Benefiting from the feedback of sensor information, the system can self-adjust the open time of the solenoid vale to accurately dispensing desired reagent volume without pre-calibration. This study focuses on the design, fabrication and application of this flow sensor. Firstly, the design, fabrication and characteristics of the MEMS flow sensor based on the measurement of the pressure difference across a flow channel are presented. Secondly, the liquid dispensing system in which the flow sensor is integrated will be introduced. A novel closed-loop control strategy is proposed to calculate valve open-time for each dispensing cycle. Finally, experiments results are presented with different dispensing volumes, Coefficient of Variance (CV) has been shown to be below 3%. It indicates that integration of the MEMS flow sensor and using of a compound intelligent control strategy make the system immune to liquid viscosity, pressure fluctuation and some other disturbances.