我国政策性银行的风险及防范措施研究

我国政策性银行成立6年来，成功地执行了国家宏观经济政策，起到了正确引导社会资金投向的作用，有力地促进了国民经济发展，但在运行中仍存在一些问题，面临较大的金融风险。本文以国家开发银行为例，分析了目前我国政策性银行面临的风险现状、国家开发银行采取的风险防范措施及其成效、仍然存在的问题，提出国家开发银行应借鉴国外政策性银行的成功经验，推行资产负债管理，完善风险监测和预警体系，健全内部控制，实施风险管理，以达到政策性银行政策性、流动性、安全性、效益性的统一，迎接中国加入WTO的挑战。 全文共分四部分： 第一部分：分析了我国政策性银行面临的风险现状，提出政策性银行因其性质、业务范围、经营原则的特殊性...学位：经济学硕士院系专业：经济学院财政金融系_金融学(含保险学)学号：B19993104

二氧代烯酮环二硫氮代缩酮的紫外光谱

本文研究了α，α＇－二氧代烯酮环二硫（氮）代缩酮的紫外光谱，指出了它们随化学结构而变化的一些特征

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^

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