The Impact of Negative Message on The Effect of Electronic Word of Mouth

负面信息的存在使网络口碑形成了一种正负交杂的信息环境。关于产品和品牌的正面信息与负面信息同时出现在消费者面前。正负交杂的信息组合如何对消费者产生影响值得研究。以前的研究证明负面信息的影响力大于正面信息，但是并没有考察正、负面信息同时存在的情况下，负面信息数量对网络口碑效果的影响。本研究将以负面信息比例为自变量，将负面信息比例定义为负面信息数量在总体网络口碑中所占的比例；以网络口碑可信度、品牌态度、购买倾向、网络再传播意愿四个因变量来衡量网络口碑效果。通过实验法探究了两种情况下负面信息比例对网络口碑效果的影响。第一种情况，口碑中产品属性中等重要条件下，不同的负面信息比例对网络口碑效果的影响；第二...The existence of negative electronic word of mouth (EWOM) formed a mixed positive and negative information environment. Positive information and negative information about products and brands appear in front of consumers. How a combination of positive and negative information in a mixed impact on consumers is worth studying. Previous studies have shown that the influence of negative information th...学位：文学硕士院系专业：新闻传播学院_传播学学号：3192011115292

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