Study of Non-Standard Charged-Current Interactions at the MOMENT experiment

MuOn-decay MEdium baseline NeuTrino beam experiment (MOMENT) is a next-generation accelerator neutrino experiment looking for more physics study. We try to simulate neutrino oscillations confronting with Charged-Current\&Non-Standard neutrino Interactions(CC-NSIs) at MOMENT. These NSIs could alter neutrino production and detection processes and get involved in neutrino oscillation channels. We separate a perturbative discussion of oscillation channels at near and far detectors, and analyze parameter correlations with the impact of CC-NSIs. Taking $\delta_{cp}$ and $\theta_{23}$ as an example, we find that CC-NSIs can induce bias in precision measurements of standard oscillation parameters. In addition, a combination of near and far detectors using Gd-doped water cherenkov technology at MOMENT is able to provide good constraints of CC-NSIs happening at the neutrino production and detection processes.Comment: 14 pages, 5 figures. Matches the published versio

Yibing Zhang, Piano

Piano Sonata Hob. XVI/50 / Joseph Haydn; Islamey op. 18 / Mily Balakirev; Piano Sonata No. 11 in A major, K. 331 / W. A. Mozart; Rigoletto de Verdi - Paraphrase de Concert, S434 / Franz Lisz

Design of High Efficiency Wireless Power Thansfer System With Nonlinear Resonator

Wireless power transfer technology (WPT) has been rapidly developed in recent years. The primary benefit of WPT is that it replaces the traditional wire charging with a cordless charging method. WPT technology has been applied in many fields, such as bio-implants, electric vehicles, and wirelessly charging systems. According to the different energy transmission mechanism, WPT technology can be divided into magnetic field coupling (includes magnetically coupled inductive and magnetically-coupled resonant), microwave radiation, laser emission, electrical-field coupling, and ultrasonic transmission type. Among these technologies, the magnetic resonance coupling method has a better promise because of its long transfer distance and high efficiency. However, there are some questions that need to be resolved, among which the most prominent is that the technology has a low tolerance to the variations of the coupling factor because of the frequency splitting phenomenon, which would lead to transmission efficiency degradation of magnetic resonance coupling WPT systems. Hence, based on reviewing the research status and trend of WPT technology, this paper analyses the frequency splitting phenomenon of the wireless power transfer system, discusses the duffing resonator circuit and its properties, and designs a kind of high-efficiency wireless power transfer inductive system with both non-linear inductors and non-linear capacitors. The main research works of this paper are as follows: Firstly, aiming at the frequency splitting problem during magnetic coupled resonance wireless power transmission, the frequency splitting phenomenon for the wireless power transfer system is studied by an electric circuit model method. The expression of the relationship between the load voltage, transmission efficiency, and coupling factor was derived, and the law of frequency splitting is discussed. Furtherly, an analysis of frequency splitting based on simulation also presented. Finally, the frequency splitting suppression method is proposed. The above research work provides a theoretical basis for solving the problem of frequency splitting and designing a kind of high-efficiency WPT system. Subsequently, a duffing resonator circuit with a nonlinear capacitor, which can eliminate the frequency splitting and keep the high transmission efficiency and power delivered to the load is developed. With the help MATLAB software, the properties of the duffing resonance circuit are discussed furtherly. The results show that the duffing resonance circuit has significantly wider bandwidth than the conventional linear resonance circuit while achieving a similar amplitude level. Finally, the high efficiency non-linear wireless power transfer system based on non-linear inductors with ferromagnetic thin film core and non-linear capacitors with ferroelectric thin film dielectrics is designed. Moreover, the system\u27s performance is improved, the range of coupling factors significantly extended while both load power and high PTE were maintained. The reason for the high efficiency of the system is furtherly discussed, and the research result shows that non-linear inductor with ferromagnetic thin film core has variable inductance which can be synchronously changed along with the current through the inductor in the circuit. The non-linear capacitor with ferroelectric thin film dielectrics can also have variable capacitance, which can be synchronously changed along with the voltage applied to the capacitor. However, the voltage across the capacitor and current through the inductors are different initially, high power transmission efficiency can be achieved by self-tuning capability of inductance and capacitance from the film based non-linear resonators. Research results of this paper can lay the solid foundations for the application of WPT technology in the fields of bio-implants, electric vehicles, wirelessly charging systems, etc

Fast Preprocessing for Robust Face Sketch Synthesis

Exemplar-based face sketch synthesis methods usually meet the challenging problem that input photos are captured in different lighting conditions from training photos. The critical step causing the failure is the search of similar patch candidates for an input photo patch. Conventional illumination invariant patch distances are adopted rather than directly relying on pixel intensity difference, but they will fail when local contrast within a patch changes. In this paper, we propose a fast preprocessing method named Bidirectional Luminance Remapping (BLR), which interactively adjust the lighting of training and input photos. Our method can be directly integrated into state-of-the-art exemplar-based methods to improve their robustness with ignorable computational cost.Comment: IJCAI 2017. Project page: http://www.cs.cityu.edu.hk/~yibisong/ijcai17_sketch/index.htm

Learning to Hallucinate Face Images via Component Generation and Enhancement

We propose a two-stage method for face hallucination. First, we generate facial components of the input image using CNNs. These components represent the basic facial structures. Second, we synthesize fine-grained facial structures from high resolution training images. The details of these structures are transferred into facial components for enhancement. Therefore, we generate facial components to approximate ground truth global appearance in the first stage and enhance them through recovering details in the second stage. The experiments demonstrate that our method performs favorably against state-of-the-art methodsComment: IJCAI 2017. Project page: http://www.cs.cityu.edu.hk/~yibisong/ijcai17_sr/index.htm

LONG-TERM FORECASTING OF INTERNATIONAL FOREST PRODUCT MARKETS: THE GFPM MODEL AND IMPLICATIONS FOR EUROPE

The Global Forest Products Model (GFPM) was developed to upgrade the FAO methodology for forest products outlook projections. Its purpose is to analyze and project the consumption, production, trade, and prices of forest products. The system deals with 180 individual countries, three classes of roundwood, sawnwood, three kinds of panels, three of pulp, waste paper, and three types of paper and paperboard. The system is built on market equilibrium theory, with imperfect foresight. The short-term equilibrium is modeled by price-endogenous linear programming determining production, consumption, trade, and market-clearing prices in any given year, subject to short-term capacities of production. Year to year changes are represented by equations predicting shifts in demand due to GDP growth, capacity expansion as a function of profitability, and technical change. The forecasts are conditional on exogenous estimates of timber availability in each country. Inertia constraints limit the short-term adjustment of trade in response to market forces. Results of applications of the model to forecast the situation in European countries until 2010 are described.International Relations/Trade,

Invisible neutrino decays at the MOMENT experiment

We investigate invisible decays of the third neutrino mass eigenstate in future accelerator neutrino experiments using muon-decay beams such as MuOn-decay MEdium baseline NeuTrino beam experiment (MOMENT). MOMENT has an outstanding performance to measure the deficit or excess in the spectra caused by neutrino decays, especially in $\nu_\mu$ and $\bar{\nu}_\mu$ disappearance channels. Such an experiment will improve the constraints of the neutrino lifetime $\tau_3$. Compared with exclusion limits in the current accelerator neutrino experiments T2K and NOvA under the stable $\nu$ assumption, we expect that MOMENT gives the bound of $\tau_3/m_3\ge1.46\times10^{-11}$~s/eV at $3\sigma$ confidence level, which is better than their recent limits: $\tau_3/m_3\ge 7\times10^{-13}$~s/eV in NOvA and $\tau_3/m_3\ge 1.41\times10^{-12}$~s/eV in T2K. The non-decay scenario is expected to be excluded by MOMENT at the $>3\sigma$ confidence level, if the best fit results in T2K and NOvA are confirmed. We further find that reducing systematic uncertainties is slightly more important than the running time. Finally, we find very little correlations between $\tau_3/m_3$ and other oscillation parameters, which point to an advantage of MOMENT to measure $\tau_3/m_3$.Comment: update plots and text