生态修复在水电水利工程水土保持生态建设中的应用探讨

在水电水利工程建设当中,为了避免对周边环境造成一定的影响,管理部门需要加强对水土保持生态化建设的重视程度,根据水电水利工程的特点采取与之对应的生态修复方案,将水电水利工程对周边环境影响降到最低,以此来满足我国生态环境保护工作的要求以及标准,从而使水电水利工程能够朝着生态化以及绿色化的方向而不断的进步满足实际的应用要求,...     

融合思政教育的《交通工程基础(英文)》课程改革与实践

文章旨在探索如何将思政元素融入到留学生专业课程教学之中并进行实践,助力宣扬中国优秀文化。分析了国内外融合思政教育与专业课程的相关研究,总结了现阶段思政教育存在的问题,提出了适合我国建设特色专业课程的方法与思路。文章以《交通工程基础(英文)》课程为实例论证了方法的可行性,前期搜集了大量课程资料以了解国内外社会对交通专业的需求,以此融合思政元素设计教学内容,建立了有效地评价反馈机制,为针对来华留学生实施思政教育提供了宝贵的建设经验。     

公平关切下闭环供应链差别定价决策

针对零售商和第三方回收商具有公平关切的情形,研究由制造商主导的三级供应链成员及整个系统的差别定价最优决策。分析了零售商以及第三方回收商公平中性和公平关切两种情形的决策模型。研究发现:零售商以及第三方回收商的公平关切行为最终会造成各自利润的损失,并且对整条供应链利润也是不利的,而这样的公平关切行为对制造商来说却是有利的。同时当公平关切程度较弱时,对整条闭环供应链系统是不利的;而当公平关切程度较强时,对整条闭环供应链系统是有利的。     

基于三全育人的课程思政元素挖掘与融入——以“国际物流”课程为例

课程思政元素挖掘与融入是课程思政建设的核心环节,但挖掘不充分、融入难是当前面临的主要问题。以《国际物流》课程为例,从政治认同、家国情怀、文化素养、宪法法治意识、道德修养等五个维度深入挖掘课程所蕴含的思政元素并有效融入课程教学,形成全员、全程、全方位开展课程思政建设思路,为物流管理专业课程思政建设提供参考。     

Simple averaging of direct and recursive forecasts via partial pooling using machine learning

This article introduces the winning method at the M5 Accuracy competition. The presented method takes a simple manner of averaging the results of multiple base forecasting models that have been constructed via partial pooling of multi-level data. All base forecasting models of adopting direct or recursive multi-step forecasting methods are trained by the machine learning technique, LightGBM, from three different levels of data pools. At the competition, the simple averaging of the multiple direct and recursive forecasting models, called DRFAM, obtained the complementary effects between direct and recursive multi-step forecasting of the multi-level product sales to improve the accuracy and the robustness.     

The saving,human wealth and asset pricing nexus: Evidence from around the world

The present study examines the dynamics of the saving, human wealth and asset pricing nexus across developed and emerging economies. We introduce two equilibrium asset pricing models in an intertemporal capital asset pricing framework, including the priced factors human wealth and market portfolio in the first framework and the saving and market portfolio in the second framework. Both asset pricing frameworks consist of two-factor, four-factor and five-factor asset pricing models. We control for size and value factors in the four-factor model and size, value and momentum factors in the five-factor model. The IV-GMM estimation and GRS test results indicate that human wealth and market portfolio for the first framework and saving and market portfolio in the second framework are primary priced factors in explaining the average returns for developed economies and the aggregate level. On the contrary, both frameworks fail to yield significant results explaining the average returns for emerging economies.     

The influence of international oil price fluctuation on the exchange rate of countries along the “Belt and Road”

In recent years, the international crude oil price has become increasingly volatile. It influences the exchange rate changes of relevant countries through economic growth, price level, international balance of payments, and other channels. Such exchange rate fluctuations have caused certain risks for the development of China’s “Belt and Road” Initiative. This article analyzes the impact of oil price changes on the exchange rates of countries. Because the fluctuation of oil prices and exchange rates has shown the characteristics of multiple time scales, this study used the empirical mode decomposition (EMD) method to obtain the long-cycle and short-cycle sequences of oil prices and the exchange rates of various countries, then analyzed the impact of oil price changes on exchange rates under different time scales. The results showed that oil price fluctuations have an impact on the exchange rate changes of countries along the “Belt and Road” under different time scales. However, this effect is asymmetric between oil-producing countries and non-oil-producing countries, and the transmission path of oil prices to exchange rates varies from cycle to cycle.     

机电设备安装的现场深化设计与施工

现阶段我国机电设备运营系统凸显了一系列瓶颈问题,在很大程度上制约了其的稳定、协调、高效运转。在坚持"安全第一、防控为主、系统治理、全面提升"的指导原则下,切实合理地进行机电设备安装管理架构体系的改进升级,拓宽设计施工的途径,从而实现机电设备运营系统的安全、稳定、长效发展。     

110kv-220kv高压输电线路的防雷技术研究

随着我国经济的高速发展,人们在日常生活对电力需求越来越多,要求也越来越高,当然对供电可靠性的要求也越来越高,因此,提高供电系统的平稳运行已成为电力系统的当务之急。总所周知,雷电是妨害电力系统尤其是配电系统的平稳运行的重要因素之一,所以,根据配电所的具体情况,做好高压输电线的防雷工作是维持电力系统持续、可靠供电的重要工作环节。本文就110kv-220kv高压输电线路的防雷技术进行研究探讨。     

基于学科发展的高校科技成果转化模糊决策评价方法研究

高校科技成果转化是国家战略重要组成部分,是促进国家和区域经济发展的重要源泉,然而其评价因素仍然多局限于科技成果转化本身,并没有从学科发展这一大学建设的核心的视角开展研究,无法使得高校科技成果转化真正与高校自身发展完全融合,形成高校科技成果转化形成内生动力。本文运用模糊决策方法对高校科技成果转化开展综合评价研究,基于学科发展的视角开展分析研究,合理选取评价因素,最后开展实证研究,为形成具有实效的高校科技成果转化机制,促进科技与经济有效融合提供重要的借鉴。