带梁式转换层的超限高层建筑结构设计

介绍了广州某带主次梁式转换层的超限高层建筑结构设计，详细介绍了其结构转换层的方案选择、结构布置、结构分析与构造处理，并结合此工程总结了带梁式转换层的高层建筑结构设计关键问题．     

Program Adaptation via Output-Constraint Specialization

In component-based software development, gluing of two software components is usually achieved by defining an interface specification, and creating wrappers on components to support the interface. We believe that interface specification provides useful information for specializing components. An interface may define constraints on a component's inputs, as well as on its outputs. In this paper, we propose a new approach to program specialization with respect to output constraints. We provide the form in which an efficient specialized program should be after such specialization, and consider a variant of partial evaluation to achieve it. In the process, we translate an output constraint into a characterization function for a component's input, and define a specializer that uses this characterization to guide the specialization process. We believe this work will broaden the scope of program specialization, and provide a framework for building more generic and versatile program adaptation techniques.     

优化换向器冷锻模冲头锥角的显式目标函数

应用金属塑性应力、应变原理和数值分析中最小二乘法推导出了优化冲头端部锥角的目标函数凹模的最大工作应力和材料利用率的具体表达式，建立了具有显式目标函数的具体数学模型，能更深入分析冲头形状对模具结构及成形工艺的影响。     

Radionuclides in primary coolant of a fluoride salt-cooled high-temperature reactor during normal operation

The release of fission products from coated particle fuel to primary coolant,as well as the activation of coolant and impurities,were analysed for a fluoride salt-cooled high-temperature reactor (FHR) system,and the activity of radionuclides accumulated in the coolant during normal operation was calculated.The release rate (release fraction per unit time) of fission products was calculated with STACY code,which is modelled mainly based on the Fick's law,while the activation of coolant and impurities was calculated with SCALE code.The accumulation of radionuclides in the coolant has been calculated with a simplified model,which is generally a time integration considering the generation and decay of radionuclides.The results show that activation products are the dominant gamma source in the primary coolant system during normal operation of the FHR while fission products become the dominant source after shutdown.In operation condition,health-impacts related nuclides such as 3H,and 14C originate from the activation of lithium and coolant impurities including carbon,nitrogen,and oxygen.According to the calculated effective cross sections of neutron activation,6Li and 14N are the dominant 3H production source and 14C production source,respectively.Considering the high production rate,3H and 14C should be treated before being released to the environment.     

基于MPSoC的轻量化汽车检测系统及硬件加速 平台设计与优化

针对车辆分类检测在精度和实时性方面存在的挑战,提出了一项改进方案,以优化YOLOv5s 模型,旨在实现轻量化 的汽车检测。通过在MPSoC硬件架构的现场可编程门阵列(FPGA) 上设计系统,成功打造了一个具备高精度、快速检测和低 能耗的解决方案。为了使得模型更适合嵌入式设备部署,采用了MobileNetv3 Small 替代YOLOv5s 的主干网络,并引入卷积 块注意力模块(CBAM) 注意力机制和Inner-IoU Loss 优化方法,使模型在轻量化的同时提升了检测精度和速度。改进后的模 型相较于原始Yolov5s模型,平均精度均值(mAP) 提升了14.8%,参数量减少了49.7%,模型体积减小了40.7%,计算量减 少了48.9%,在NVIDIA 3060上,改进后的检测速度提升了48.8%,达到了82 fps。此外,还利用FPGA 对YOLOv5s 进行了 硬件加速。经过优化的系统达到了45fps 的检测帧率,并保持了较高的精度和速度,这一系统易于部署,适用于智能交通系 统,满足其高效实时监测的需求。     

南昌市城市防洪排涝水文分析

以南昌市外洲等4个水文水位站已收集到的227站年水文资料为系列样本，对城市化水平下的城市洪水成因和雨洪关系等进行研究，探索市区防洪治涝对策与途径，并为南昌市防洪排涝提供决策依据。     

信息技术实施规划

主要介绍了制定企业信息技术实施规划的一种方法，包括现状的诊断，目标方向的决策和规划的预测等三个方面的内容，并讨论了与实施规划相关的问题。     

基于脑电技术的MOOC平台用户体验优化策略研究

目的 通过脑电技术与主观问卷相结合的方式,测量MOOC平台用户体验水平,探索影响MOOC平台用户体验的主要因素,提出设计优化建议。方法 通过脑电技术采集各被试者在使用MOOC平台时的脑电信号特征,结合用户体验量表获取用户的主观评价。采用频域分析的方法提取节律波能量值并进行定量化分析,洞察节律波能量与主观评价的内在联系,从而实现MOOC平台用户体验水平的定量化分析。结论 中国大学MOOC平台用户体验优于学堂在线平台,MOOC平台可用性、可寻性是影响用户注意力、脑力负荷、唤醒度的重要影响因素,MOOC平台愉悦性是影响用户情绪的主要因素。