摘要：
Abstract: Taking the education college students of Hunan Agricultural University as an example, this article investigates the current situation of online learning of college students. Aiming to analyze the in-fluence factors about online learning in course selection and online learning perseverance, at the same time, it puts forward corresponding suggestions for the future development of online learning resources and platforms.#@#@#摘要: 以湖南农业大学教育学院学生为例，调查目前大学生线上学习的现状，分析其在线上学习时在课程选择以及线上学习坚持性的影响因素，并针对这些问题提出相应的建议，为未来的线上学习资源和平台的开发提供基础。
摘要：
Animal models are useful tools for verifying the relationship between stress and depression; however, an operational criterion for excluding the resilient animals from the analysis has not been established yet, which hinders the model’s ability to more accurately mimic the scenario in humans. To induce depression-like symptoms, rats received maternal deprivation (MD) during PND1–14, and/or chronic unpredictable stress (CUS) exposure. The latent profile analysis (LPA) was used to determine latent subgroups in treatment naive adult rats. The percentile method was used to distinguish sensitive and non-sensitive behaviors in rats. The sucrose preference rate of treatment naive adult rats was fit using a Beta distribution, while immobility time was fit using a Gamma distribution. Indexes of behavioral tests revealed the 4-class model as the best fit for treatment naive adult rats. The incidence of stress-resilience in MD rats was significantly higher than that in CUS rats and MD + CUS rats. There was a significantly higher incidence of stress-resilience in CUS rats compared with MD + CUS rats. Recovery rate of anhedonia-like and sub anhedonia-like behaviors in CUS rats was significantly higher than that in MD and MD + CUS rats. There was a significantly higher recovery rate of anhedonia-like behaviors in MD rats compared to MD + CUS rats. The percentile method is suitable for setting up an operational cutoff to classify depression-like, sub depression-like, and resilient behaviors in rats exposed to MD and CUS.
