三峡工程茅坪溪防护土石坝施工期安全监测

介绍了三峡工程茅坪溪防护坝的安全监测布置和沥青混凝土心墙的施工期的温度变化，如墙体突破软化点的深度，通过资料分析并及时调整施工程序，控制了因两侧过渡料碾压不均衡产生的墙底接触面错动。     

建立柳江盆地地质遗迹自然保护区之管见

柳江盆地分布着中国北方新元古代—新生代中各时段地层,其中记录了各时段地壳变动、岩浆活动、沉积环境变迁和生物演化等重大地质事件,被喻为“地学研究的天然实验室和自然博物馆”、“哺育新一代地学人才的摇篮”等,成为具有重要科学价值与社会价值的地质遗迹区。目前该区许多地质遗迹面临人为破坏的威胁,应当尽快建立地质遗迹自然保护区。     

Electrification of a city bus network—An optimization model for cost-effective placing of charging infrastructure and battery sizing of fast-charging electric bus systems

The deployment of battery-powered electric bus systems within the public transportation sector plays an important role in increasing energy efficiency and abating emissions. Rising attention is given to bus systems using fast charging technology. This concept requires a comprehensive infrastructure to equip bus routes with charging stations. The combination of charging infrastructure and bus batteries needs a reliable energy supply to maintain a stable bus operation even under demanding conditions. An efficient layout of the charging infrastructure and an appropriate dimensioning of battery capacity are crucial to minimize the total cost of ownership and to enable an energetically feasible bus operation. In this work, the central issue of jointly optimizing the charging infrastructure and battery capacity is described by a capacitated set covering problem. A mixed-integer linear optimization model is developed to determine the minimum number and location of required charging stations for a bus network as well as the adequate battery capacity for each bus line. The bus energy consumption for each route segment is determined based on individual route, bus type, traffic, and other information. Different scenarios are examined in order to assess the influence of charging power, climate, and changing operating conditions. The findings reveal significant differences in terms of required infrastructure. Moreover, the results highlight a trade-off between battery capacity and charging infrastructure under different operational and infrastructure conditions. This paper addresses upcoming challenges for transport authorities during the electrification process of the bus fleets and sharpens the focus on infrastructural issues related to the fast charging concept.     

论“公正”重于“关护”———对中国就业弱势群体税收支持政策的哲学反思

随着我国就业弱势群体的出现,财政部和国家税务总局陆续出台了一系列促进就业的税收政策,但由于这些税收政策在“公正”与“关护”两个基本原则运用上存在侧重点的偏差,导致这些政策的作用效果并不明显。“公正”与“关护”同属人类伦理学理论资源中的两个基本道德诉求。在就业弱势群体税收支持政策制定中,两者缺一不可、互相关联,但从国家宏观就业指导方针、道德原则的稳定性、持久性以及普遍性的角度看,应该坚持“公正”重于“关护”。     

A successful British MNE in the backyard of American big business: Explaining the performance of the American and Canadian subsidiaries of Lever Brothers 1888–1914

After 1888, Lever Brothers expanded into the United States and Canada. The surviving archival evidence suggests that the Canadian subsidiary was more successful than the American one. This article considers a number of factors that help to explain why this was the case. Some of the factors considered, such as differences between the Canadian and American tariffs, Canada's more robust system of trademark protection, and the absence of an anti-trust law in Canada before 1908, are related to themes very familiar to business historians. This article also applies concepts that are not part of the normal toolkit of business historians. The article draws on the literature on identity economics and argues that the greater success enjoyed by Lever Brothers in Canada was, in part, rooted in Canada's strongly British identity. The impact of identities on the policymakers, managers, and consumers who collectively shaped the two North American subsidiaries is assessed.     

有备无患：后续疫情中新冠焦虑对武汉员工防护和工作的影响研究

国内局部疫情陆续暴发,关注已有疫情经历的员工防护和工作行为对疫情防控有一定意义。基于资源保存理论,文章假设新冠焦虑对武汉员工防护行为和工作结果有显著影响,且对防护行为影响大于对工作结果的影响。在2021年初国内局部疫情期间,对52名武汉员工连续5天的调查发现,每日新冠焦虑通过每日新冠耗竭显著提升武汉员工新冠防护行为,但武汉员工每日工作产出不受疫情影响,包括工作绩效、创新绩效、工作导向和人际导向的帮助行为。文章揭示了有2020年新冠肺炎疫情直接经验的武汉员工对待后续疫情防护的谨慎态度,以及在工作结果方面对后续疫情的“抗干扰性”。结合当前情况,讨论了研究结果对疫情防控和经济恢复的实践意义。     

More from Belarus

On January 20th,2008,the People＇s Republic of China and the Republic of Belarus celebrated the 16th anniversary of the establishment of their foreign diplomatic relationship.China was one of the first countries who recognized Belarus＇ independence,after which the development of Sino-Belarusian relations has enjoyed precedence in both countries＇ diplomatic strategic policies.From January 1995 to now,frequent top level visits have promoted cooperation,and more than 50 cooperative agreements have been reached covering all aspects of life.     

谈谈当前我省消灭无标生产工作的情况和问题

总结甘肃省开展消灭无标生产工作带来的变化,分析提出工作中存在的新情况、新问题及其对策。     

一种利用电压模故障分量的选相元件

针对系统参数可能的变化，分析了各种类型故障条件下电压模故障分量在故障点和保护安装处的特征，提出了一种利用电压模故障分量的选相元件，该元件利用电压故障分量，故障发生后可以快速动作。在此基础上，针对线路末端经高阻单相接地时该元件灵敏度不足的问题，提出了一种选相方案。ATP仿真和MATLAB分析验证了该方案的可行性。     

在役水下倒虹吸输水管道可靠性评估方法

输水管道是城市生命线工程的组成部分之一，开展其运行安全可靠的评估工作是非常必要的，通过各种检测手段和对计算结果进行分析，可以对在役水下倒虹吸输水管道在地震波作用下的运行是否安全可靠做出评估，进而确定适当的管道检测周期，以及确定管道是否需要改变运行方式，采取修理或更换等措施。