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“大鱼”与“小鱼”的互动——以澳门大学蔡继有书院的师生关系为例 被引量:1
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作者 李慧中 张俏婷 《世界教育信息》 2020年第6期58-63,共6页
20世纪90年代,高校书院制度在我国兴起,学生可以在课堂以外与导师沟通和学习;师生居住在书院并参与各类型的活动,担当不同的角色,以培养学生的综合能力。文章以澳门大学蔡继有书院为例,探讨住宿式书院如何以人为本,利用不同教师的专长... 20世纪90年代,高校书院制度在我国兴起,学生可以在课堂以外与导师沟通和学习;师生居住在书院并参与各类型的活动,担当不同的角色,以培养学生的综合能力。文章以澳门大学蔡继有书院为例,探讨住宿式书院如何以人为本,利用不同教师的专长和背景,结合住宿式书院特色,建构出具有现代性、西方文化和中国传统文化相结合的师生关系,同时探讨住宿式书院导师和学生的角色、专业课程与住宿式书院课程的师生关系比较以及书院师生交流方式的转型等。 展开更多
关键词 师生关系 住宿式书院 互动
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双融合模型在香港股市的波动率量化交易策略研究
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作者 颜轲越 王宁 李莹 《金融》 2024年第3期844-855,共12页
在金融市场中,波动率反映了资产价格的不稳定性和风险程度。波动率量化交易策略是一种利用波动率来指引投资者进行交易的方法,并能够带来一定的收益。本文的目的是探讨时间序列模型和机器学习模型相结合的双融合模型在波动率量化交易策... 在金融市场中,波动率反映了资产价格的不稳定性和风险程度。波动率量化交易策略是一种利用波动率来指引投资者进行交易的方法,并能够带来一定的收益。本文的目的是探讨时间序列模型和机器学习模型相结合的双融合模型在波动率量化交易策略中的应用,以提升策略的效果和稳健性。我们采用了3种时间序列模型Generalized Autoregressive Conditional Heteroskedasticity (GARCH)、Glosten Jagannathan Runkle GARCH (GJR-GARCH)和Exponential GARCH (EGARCH),以及4种传统机器学习模型Random Forest (RF)、Adaboost (ADA)、Gradient Boosting Decision Tree (GBDT)和Histogram Based Gradient Boosting (Hist-GB),组合成了12种双融合模型对波动率进行预测。同时,我们进行了模拟交易的回测实验,以评估该波动率量化交易策略的性能。该策略在香港市场中的股票都获得了较好的收益,为投资者提供了有价值的参考。 展开更多
关键词 时间序列模型 机器学习模型 波动率预测 量化交易
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大湾区创新青年人才培养机制研究
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作者 李可 《劳动保障世界》 2020年第11期54-55,共2页
大湾区的建设离不开科技创新,创新型人才的教育、培养是科技创新的核心内驱力。在新的时代背景下,粤澳如何发挥各自所长,深化合作构建创新人才培养机制,将是成功实现大湾区国家战略、在"一国两制"体制下保持国家长期繁荣稳定... 大湾区的建设离不开科技创新,创新型人才的教育、培养是科技创新的核心内驱力。在新的时代背景下,粤澳如何发挥各自所长,深化合作构建创新人才培养机制,将是成功实现大湾区国家战略、在"一国两制"体制下保持国家长期繁荣稳定的关键。 展开更多
关键词 创新人才培养 粤澳合作
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Analyzing the risk of drug abuse for morphine-containing Chinese patent medicines in China 被引量:1
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作者 Jieying Lin Jingjing Liu +1 位作者 Yaning Qi Chunming Wang 《Journal of Chinese Pharmaceutical Sciences》 CAS CSCD 2017年第2期139-146,共8页
Chinese patent medicines(CPMs) are widely used across China, and they are differently administrated from chemical drugs. For traditional reasons, CPMs may contain opium-derived compounds, such as morphine, which may... Chinese patent medicines(CPMs) are widely used across China, and they are differently administrated from chemical drugs. For traditional reasons, CPMs may contain opium-derived compounds, such as morphine, which may pose the issues of drug abuse and addiction. In the present study, we aimed to evaluate the present risk of morphine-containing CPMs in causing drug abuse and addiction, based on a questionnaire-based approach and from a medicinal administrative perspective. We chose 76 CPMs containing morphine from government document and set them as the study group, and 10 chemical drugs containing morphine were set as the control group. Because there is no ready-made method, we created an evaluation sheet consisting of five questions to evaluate each drug and generate a risk-value score. Crosstabs analysis using SPSS 15.0 was conducted to obtain the influencing factors. We found that the study group obtained a mean score of 2.04 for the risk value, which was five times of that of the control group. Specifically, no maximum limit of morphine or codeine was set in product quality standards for more than four-fifth of the drugs. Moreover, 46.0% of package inserts failed to show any warning about addiction or prohibition over the long-term use of the drugs. The number of ingredients, as well as the functions of the drugs, was found to correlate with the risk value. Our findings suggested that CPMs were more risky in causing drug abuse and addiction than chemical drugs. Approaches, such as i) controlling the number of ingredients, ii) setting up maximum limit of morphine or codeine in quality standard, iii) providing more information on the package insert of drugs and iv) monitoring the drug containing both morphine and ephedrine, will be effective in reducing the risk of drug abuse and addiction. 展开更多
关键词 Chinese patent medicines MORPHINE Opium poppy Risk of drug addiction and abuse
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