第八届全国工程爆破学术会议征文通知

介绍了在复杂环境中采用控制爆破技术拆除2组钢筋混凝土结构楼梯扶手,论述了工程方案参数设计及主要安全措施。拟拆除扶手为钢筋混凝土墙体,厚30cm,墙体布置2层钢筋,纵向钢筋为Φ15mm,间距15cm,横向钢筋为Φ12mm,间距20cm,因墙体较薄,钢筋密集,沿墙面水平向钻孔,施工难度大,采取剔除墙端部箍筋,沿墙体垂直钻孔,孔间距30cm,采用不耦合装药结构。扶手墙体不规则,需分区段确定孔深,由于扶手底座混凝土需要保护,孔底填充缓冲材料,采用非电导爆管雷管逐段孔外接力起爆。利用炮被(橡胶轮胎制作)进行覆盖防护,使爆破飞石控制在被爆体周围2³m范围内,同时在距被爆体周围2m范围搭设防护排架,铺设竹席、棉被和草帘等进行隔离防护,确保爆破飞散物不飞出防护层外,爆破后达到预期的爆破效果。     

ASTEMA: Design and preliminary performance assessment of a novel tele-microsurgery system

To overcome the challenges of reconstructive microsurgery, a teleoperated robot called ASTEMA was built to help surgeons performing microanastomoses. The surgeons’ needs are first analyzed then the design steps are summarized. This robot is composed of three orthogonal linear actuators and a spherical wrist with its remote center of motion at the instrument tip. Geometric model of the spherical wrist was calibrated through mathematical optimization in order to compensate for imperfections of machining and assembling. Two preliminary experiments were carried out to assess the ASTEMA performance. The first was performed with a simple circular position trajectory. The second was a complex angular trajectory. Results show a significant improvement of gesture precision with respect to manual trajectory execution. They also show that subjects instinctively compensate the errors from the non-ideal wrist, thanks to visual feedback from microscope.     

Optimal design and operation of integrated microgrids under intermittent renewable energy sources coupled with green hydrogen and demand scenarios

Renewable energy integration into existing or new energy hubs together with Green technologies such as Power to Gas and Green Hydrogen has become essential because of the aim of keeping the average global temperature rise within 2 ^°C with regard to the Paris Agreement. Hence, all energy markets are expected to face substantial transitions worldwide. On the other hand, investigation of renewable energy systems integrated with green chemical conversion, and in particular combination of green hydrogen and synthetic methanation, is still a scarce subject in the literature in terms of optimal and simultaneous design and operation for integrated energy grids under weather intermittency and demand uncertainty. In fact, the integration of such promising new technologies has been studied mainly in the operational phase, without considering design and management simultaneously. Thus, in this work, a multi-period mixed-integer linear programming (MILP) model is formulated to deal with the aforementioned challenges. Under current carbon dioxide limitations dictated by the Paris Agreement, this model computes the best configuration of the renewable and non-renewable-based generators, their optimal rated powers, capacities and scheduling sequences from a large candidate pool containing thirty-nine different equipment simultaneously. Moreover, the effect of the intermittent nature of renewable resources is analyzed comprehensively under three different scenarios for a specific location. Accordingly, a practical scenario generation method is proposed in this work. It is observed that photovoltaic, oil co-generator, reciprocating ICE, micro turbine, and bio-gasifier are the equipment that is commonly chosen under the three different scenarios. Results also show that concepts such as green hydrogen and power-to-gas are currently not preferable for the investigated location. On the other hand, analysis shows that if the emission limits are getting tightened, it is expected that constructing renewable resource-based grids will be economically more feasible.     

Information Technology–Supported value Co-Creation and Co-Destruction via social interaction and resource integration in service systems

The paper develops a conceptual framework to study the constructs of information technology (IT)-supported value co-creation and co-destruction through shared processes of social interaction and resource integration as mediated by IT and embedded in interactive value formation practices. In particular, the elements of social interaction and resource integration are identified, and the role of IT is discussed. We conduct a systematic literature review and analyze the data using the service system perspective. Our research contributes by identifying the constructs of value-creating phenomena enabled by IT from the service system perspective and presenting a research agenda for further studies.     

基于WEP的横断山垂直带水文过程模拟研究

为了更好模拟横断山在气象、植被、土壤、水分等垂直地带性影响下的水文过程，本文采用分布式流域水文模型 WEP，提出反映空间分异特征的垂直带参数化方案，并选择横断山流域 14 个水文控制断面 1960—2015 年的逐月径流数据进行了模拟验证。结果显示，垂直带参数化方案较好地模拟了横断山区的水循环过程；通过两种对照方案和垂直带参数化方案的对比表明，“垂直带参数化方案”比“普通的参数方案”的 NS 提高 0.03、RE 降低1%，比“均一化参数方案”的 NS 提高 0.3、RE 降低 19.6%。通过考虑参数的垂直变化影响，能够提高模型模拟效果，且可更好地反映气象、植被、土壤、水分等信息的垂直地带性，弥补以往水文模型对参数的垂直变化描述不足的问题。     

"电磁场与电磁波"课程混合教学模式研究

“电磁场与电磁波”是多种学科的交叉点，是电子信息、通信技术相关专业的重要理论基础，是电类专业的一门核心基础课程。该课程内容涉及面广、理论抽象、数学分析多，是公认的一门教师难教、学生难学的课程。本文针对“电磁场与电磁波”课程教学实际，尝试利用前沿技术引领课堂教学，对教学模式进行改革与实践。以课程为中心、教师为主导、学生为主体，探索覆盖体系课程融合、课外仿真实践、课程思政、工程案例与科研融入、翻转课堂、线上线下并行等混合教学模式。通过教学模式改革，希望打通课前、课中、课后以及相关课程间的连接通道，帮助学生系统理解和消化电磁场与电磁波的基本理论，充分锻炼学生独立解决实际问题和实践创新的能力。     

体育信息资源整合及其网络共享服务模式的构建

学校的体育教学以及科学研究都与体育资源的整合有着密切的关系，尤其对我国体育事业的发展起着一定的推动作用。科学技术的发展也推动着互联网信息平台的建设，体育事业的发展也跟随这样的信息建设而实行有效的整合与应用。本文主要结合当今互联网中体育资源信息整合的基本情况，来具体阐述体育信息资源网络构建的过程和内容。     

工程材料及机械制造基础课程立体化教学与改革的探讨

本文阐述了工程材料及机械制造基础课程整合与课程教学改革的原因、改革的措施。从结果上看,激发和提高了学生的学习兴趣,加强了理论联系实际和工程应用能力培养,这一课程整合与教学改革达到了目标,取得了良好的实践效果,探索了该课程立体化教学和教学实践改革的思路与方法。     

一种新型城镇污水处理一体化间歇曝气生物膜反应器

文中介绍了一种新型城镇污水处理一体化间歇曝气生物膜反应器的工艺系统、技术原理以及实际处理效果,试验结果显示,该工艺对COD、氮、磷均具有良好的去除效果,是一项具有广阔应用前景的新工艺。     

立磨对水泥配合料的适应性探讨

通过研究不同组成的立磨终粉磨水泥试样的颗粒特性,并与相同组成的球磨机终粉磨水泥试样的颗粒特性进行比较,探讨了以立磨为终粉磨装置对不同入磨物料的适应性问题。试验研究结果发现,以立磨对水泥进行终粉磨时,其对入磨物料变化的适应性明显不如球磨机终粉磨系统。然而当物料的易磨性越好时,立磨终粉磨水泥的颗粒特性表现就会越好,此时与球磨终粉磨水泥颗粒特性的差距也会明显变小。