Happiness, Relative Income and Income Inequality: Evidence from Urban China

对幸福的追求一直人类社会的永恒目标。在物质水平极大丰富的当代，主观 幸福感（对生活满意程度）越来越成为人们关注的焦点。上世纪70年代，“伊 斯特林悖论”一经提出就吸引了主流经济学家和社会学家对于主观幸福感相关问 题的探讨。其中相对收入和收入不平等都是影响主观幸福感的重要因素，受到了 广泛的关注。经济学家结合心理学和社会学提出了相对收入理论、攀比理论等来 解释有关幸福感的现象。本文的主要内容是探讨相对收入和收入不平等对主观幸 福感的影响。本文使用中国城市的数据，通过设定不同参照组（ReferenceGroup）的划分标准，计算不同参照标准的相对收入，从而探究了不同参照标准对幸福感的影...The pursuit of happiness (subjective well-being) has been the eternal goal of human society. In the great wealth of contemporary material level, subjective well-being (life satisfaction) has increasingly become the focus of attention. In 1974, "Easterlin Paradox" attracted a great deal of economists and sociologists to discuss the issues related to happiness. Wherein the relative income and inco...学位：经济学硕士院系专业：王亚南经济研究院_数量经济学学号：2772013115279

Erwinia chrysanthemi分离株CSCL006 hrpN基因的克隆与高效表达

通过构建Erwiniachrysanthemi分离株CSCL006的DNA文库,克隆出hrpNCSCL006基因,测序结果显示该基因编码区长1020bp;推导的harpinCSCL006与ErwiniachrysanthemiEC16和3937编码的harpin蛋白同源性高,但与其它软腐菌的harpin蛋白同源性较低;在大肠杆菌中(Escherichiacoli)高效表达了hrpNCSCL006基因,重组harpinCSCL006蛋白分子量为34kD。以抗harpinEcc的抗体为探针,Westernb

Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024

We present a measurement of the integrated luminosity e+e- of collision data collected by the BESIII detector at the BEPCII collider at a center-of-mass energy of Ecm = 3.773 GeV. The integrated luminosities of the datasets taken from December 2021 to June 2022, from November 2022 to June 2023, and from October 2023 to February 2024 were determined to be 4.995±0.019 fb-1, 8.157±0.031 fb-1, and 4.191±0.016 fb-1, respectively, by analyzing large angle Bhabha scattering events. The uncertainties are dominated by systematic effects, and the statistical uncertainties are negligible. Our results provide essential input for future analyses and precision measurements

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

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^

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

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