The Research of Electronic Data Assets Evaluation Method

纵观互联网发展的历程，数据的传输起了翻天覆地的变化。互联网发展的20多年里，伴随大数据时代、云时代相继到来，给传统的行业注入新的元素，同时也铸造了如计算机、互联网相关的行业。本文旨在对电子数据资产这一重要的新资产的价值评估方法进行初步的研究，根据国内外相关文献和自身理解针对电子数据和资产各自特性的进行融合，重点讨论其定义、价值体现形式、性质特征以及分类方式。在此理论基础上，结合电子数据资产的特性分析传统评估方法和无形资产创新性评估方法在数据资产的评估适用性。针对现有评估方法的缺陷以及数据资产固有特性，从市场法的角度对数据资产的价值进行评估。 本文数据标的资产评估时点为2016年1月31日，并...Throughout the development of the Internet, data transmission has changed a lot. Internet has developed more than 20 years. With the era of big data and cloud era coming, the traditional industries were injected many new elements. The computer industry and Internet industry get a good evolution. The purpose of this paper is to make a preliminary study of the value of electronic data assets. Accord...学位：经济学硕士院系专业：经济学院_资产评估学号：1552013115192

A Class of Nonparametric ARMA Models

摘要: 用任意的一元函数代替常数作为线性自回归滑动平均(ARMA) 模型中自回归项的系数,提出并研究一类新的非 参数ARMA 模型. 首先研究该模型的概率性质,获得了该模型的平稳性条件. 分别用局域线性回归和全局的最小二乘方 法估计模型中的函数系数和参数,在函数系数的局域线性估计中,推广了一个GCV 准则以选择最优的窗宽. 为了检验特 殊的参数化模型是否已经足够描述实际数据的动态结构,提出了一个Boot st rap 检验方法. 随机仿真的例子表明本文的估 计和检验方法是正确的和可行性的. 进一步,用该模型成功地分析了一个实际数据集. Abstract :A new class of nonparamet ric autoregressive moving average models ,in which arbit rary univariate functions act as the coefficient s of autoregressive terms instead of constant s ,is proposed and discussed. The probabilistic property of the models is investigated and a stationay condition is derived. It provides global estimate for the parameters and local linear smoother for the functional coefficient s in the models respectively. In particular ,the optimal bandwith is selected via a modified generalized cross2validation criterion. A boot st rap test is applied to test whether the functional coefficient s are some specified paramet ric forms. The feasibility and validity of the proposed methods are justified by simulated examples. A real data set is analyzed by the proposed models

楔形塊式垂直雙向複動式之完全密閉鍛造模組

[[abstract]]本創作係有關於楔形塊式垂直雙向複動式之完全密閉鍛造模組,其主要係包含有一上模座,一與上模座上、下對應設置之下模座;其中,該下模座中央設置有一楔形座,而楔形座兩側則分別靠置一楔形塊;又,楔形座中央固設有一下衝頭,由該下衝頭上套設一基板,且該基板經由彈性元件與楔形座相連結,其上並設置一相對於基板滑動之分割模,且該分割模外側形成錐面;另,上模座中央對應下衝頭處設有一上衝頭,對應分割模處則經由彈性元件連結一具錐度之浮動外環,且對應楔形塊分別設置一撞桿;鍛造時以浮動外環將分割模往內壓迫進行合模,同時,撞桿推擠楔形塊往中央移動,驅動楔形座並使下衝頭往上運動,產生雙向複動之作用擠入模穴,完成胚料之近淨形鍛造成形

Bayesian Analysis of SLTBL Models

利用M arkov cha in M on te C arlo技术对可分离的下三角双线性模型进行B ayes分析.由于参数联合后验密度的复杂性,我们导出了所有的条件后验分布,以便利用G ibbs抽样器方法抽取后验密度的样本.特别地,由于从模型的方向向量的后验分布中直接抽样是困难的,我们特别设计了一个M etropolis-H astings算法以解决该难题.我们用仿真的方法验证了所建议方法的有效性,并成功应用于分析实际数据.A Bayesian method is provided to analyze seperable lower-triangular bilinear time series models via Markov chain Monte Caro technique.To generate the sample by Gibbs sampler,we first derive all of the conditional posterior distributions.Since it is difficult to sample directly from the conditional posterior of the index in the models,a special Metropolis-Hastings step is designed.We demonstrate the proposed method by simulated and real examples

Amplitude analysis of the decays D0 → π+π−π+π− and D0 → π+π−π0π0*

Using e+e− annihilation data corresponding to an integrated luminosity of 2.93 fb−1 taken at the center-of-mass energy √s = 3.773 GeV with the BESIII detector, a joint amplitude analysis is performed on the decays D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η). The fit fractions of individual components are obtained, and large interferences among the dominant components of the decays D0 → a1(1260)π, D0 → π(1300)π, D0 → ρ(770)ρ(770), and D0 → 2(ππ)S are observed in both channels. With the obtained amplitude model, the CP-even fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are determined to be (75.2 ± 1.1stat. ± 1.5syst.) % and (68.9 ± 1.5stat. ± 2.4syst.)%, respectively. The branching fractions of D0 → π+π−π+π− and D0 → π+π−π0π0 (non-η) are measured to be (0.688 ± 0.010stat. ± 0.010syst.)% and (0.951 ± 0.025stat. ± 0.021syst.)%, respectively. The amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D0 → 4π when used to determine the CKM angle γ(φ3) via the B− → DK− decay

Prediction of Energy Resolution in the JUNO Experiment

International audienceThis paper presents the energy resolution study in the JUNO experiment, incorporating the latest knowledge acquired during the detector construction phase. The determination of neutrino mass ordering in JUNO requires an exceptional energy resolution better than 3% at 1 MeV. To achieve this ambitious goal, significant efforts have been undertaken in the design and production of the key components of the JUNO detector. Various factors affecting the detection of inverse beta decay signals have an impact on the energy resolution, extending beyond the statistical fluctuations of the detected number of photons, such as the properties of liquid scintillator, performance of photomultiplier tubes, and the energy reconstruction algorithm. To account for these effects, a full JUNO simulation and reconstruction approach is employed. This enables the modeling of all relevant effects and the evaluation of associated inputs to accurately estimate the energy resolution. The study reveals an energy resolution of 2.95% at 1 MeV. Furthermore, the study assesses the contribution of major effects to the overall energy resolution budget. This analysis serves as a reference for interpreting future measurements of energy resolution during JUNO data taking. Moreover, it provides a guideline in comprehending the energy resolution characteristics of liquid scintillator-based detectors

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel

JUNO sensitivity on proton decay p → ν K + searches*

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this study, the potential of searching for proton decay in the $p\to \bar{\nu} K^+$ mode with JUNO is investigated. The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits suppression of the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar{\nu} K^+$ is 36.9% ± 4.9% with a background level of $0.2\pm 0.05({\rm syst})\pm$$0.2({\rm stat})$ events after 10 years of data collection. The estimated sensitivity based on 200 kton-years of exposure is $9.6 \times 10^{33}$ years, which is competitive with the current best limits on the proton lifetime in this channel and complements the use of different detection technologies