让党旗始终飘扬在公交车上——安康公交加强党建工作纪实

坚持党的领导、加强党的建设,是国有企业的“根”和“魂”。党的十九大精神为新形势下公交党建工作指明了方向,面对新时代、新挑战、新任务,安康市公共交通有限责任公司(以下简称安康公交)把党的建设贯穿到企业改革发展和公司治理全过程,围绕“强根铸魂国企兴”主题实践活动,坚持党建统领发展,形成了联系紧密、服务到位的基层党建局面。     

The effect of information overload on the intention of consumers to adopt electric vehicles

Transportation - To encourage the pro-electric vehicle (EV) behavioral intentions of consumers, EV manufacturers should make a significant commitment to EV-related information and devise strategic...     

基于射频技术的船舶舱室人员定位系统研究

针对船舶发生事故时无法确认舱室人员分布情况的问题,论文提出了基于射频技术的船舶舱室人员定位系统的实现方法,并进行了硬件和软件的设计.该系统能够满足船舶日常人员管理及事故救援时的定位使用要求.     

利用TRIZ创新方法提高BGA芯片贴装精度

本文利用TRIZ创新方法提高BGA芯片贴装精度。运用TRIZ工具产生9个概念方案,针对解决方案进行分析、评估,最终确定了一种组合解,提高了BGA芯片贴装精度。     

基于遗传算法的盾构隧道管片接头刚度反演研究北大核心CSCD

梁-弹簧模型在管片衬砌结构计算中应用较广泛,目前接头刚度取值方法主要有模型试验法及经验取值法,模型试验法耗时长、成本高昂,而依据经验取值难免存在一定主观性。鉴于此,利用C++编程语言,基于遗传算法开发了盾构隧道管片结构位移反分析程序,首先通过弹性模量值反演算例,得出反演值与理论值误差为1.4%,验证了算法和程序的可行性。利用程序将反演接头刚度值与实际设计案例管片接头刚度值进行对比,反演计算结果表明:正弯矩下管片环向接头转动刚度值反演误差为2.6%,负弯矩下管片环向接头转动刚度值反演误差为4.3%。     

某隧道初期支护混凝土开裂处理及效果分析

文章结合某高速公路隧道工程初期支护开裂处理情况,分析了初期支护混凝土的开裂原因,以及采用的洞内小导管注浆加固裂缝区、加强开裂区监控量测等处理措施及效果。工程实践表明,经过处理后的隧道周边收敛和拱顶下沉量均在规范允许范围内,取得了良好的效果,为今后类似软弱围岩隧道施工积累了经验。     

Simulating the household plug-in hybrid electric vehicle distribution and its electric distribution network impacts

This paper presents a multi agent-based simulation framework for modeling spatial distribution of plug-in hybrid electric vehicle ownership at local residential level, discovering “plug-in hybrid electric vehicle hot zones” where ownership may quickly increase in the near future, and estimating the impacts of the increasing plug-in hybrid electric vehicle ownership on the local electric distribution network with different charging strategies. We use Knox County, Tennessee as a case study to highlight the simulation results of the agent-based simulation framework.     

Thermal Transport in Nanoporous Yttria-Stabilized Zirconia by Molecular Dynamics Simulation

Yttria-stabilized zirconia (YSZ) is widely used as thermal barrier coatings (TBCs) to reduce heat transfer between hot gases and metallic components in gas-turbine engines. Porous structure can generally reduce the lattice thermal conductivity of bulk material, so porous YSZ can be potentially used as TBCs with better thermal performance. In this work, we investigate the thermal conductivity of nanoporous YSZ using the nonequilibrium molecular dynamics (NEMD) simulation, and comprehensively discuss the effects of cross-sectional area, pore size, structure length, porosity, Y₂O₃ concentration and temperature on the thermal conductivity. To compare with the results of the NEMD simulation, we solve the heat diffusion equation and the gray Boltzmann transport equation (BTE) to calculate the thermal conductivity of the same porous structure. From the results, we find that the thermal conductivity of YSZ has a weak dependence on the structure length at the length range from 10 to 26 nm, which indicates that the majority of heat carriers have very short mean free path (MFP) but there exists small percentage (about 3%) of phonons with longer MFP (larger than 10 nm) contributing to the thermal conductivity. The thermal conductivity predicted by NEMD simulation is smaller than that of solving heat diffusion equation (diffusive limit) with the same porous structure. It shows that the presence of pores affects phonon scattering and further affects the thermal conductivity of nanoporous YSZ. The results agree well with the solution of gray BTE with a average MFP of 0.6 nm. The thermal conductivity of nanoporous YSZ weakly depends on the Y₂O₃ concentration and temperature, which shows the phonons with very short MFP play the major contribution to the thermal conductivity. The results help to better understand the heat transfer in porous YSZ structure and develop better TBCs.     

框架结构钢筋混凝土面板裂缝分析与防治

对重庆果园港区码头现浇钢筋混凝土面板裂缝进行理论分析，找出产生裂缝的原因，并针对性地采取措施。这些措施包括：提高混凝土本身抗拉强度；采用混凝土后浇带方式在施工期间解除束缚面板混凝土的约束；通过对混凝土原材料、配合比的优化和采取施工措施来减少混凝土的自生收缩、塑性收缩、干缩及温度变化和内外温差引起的收缩，从而大大降低混凝土的收缩应力。