深度学习的人体图像半自动标注系统

针对目前数据标注过于依赖硬件、手动数据标注效率低下的问题,提出了基于深度学习的人体图像半自动标注系统.系统通过对算法进行改进,增加人体关键点个数进行特征提取和加入运动信息的约束,提高了视频分阶段标注的准确率.使用真实数据集仿真实验证明了通过深度学习算法进行数据标注的可行性,并且使用半自动标注的速度快、准确率高.     

基于模糊聚类的半自动跟踪技术研究

现有半自动跟踪系统将操作员等效为准线性环节,增大了训练的难度和成本,不适应复杂战场环境下多个快速机动目标的选取和跟踪.利用特征提取方法得到视场的“潜在目标”集,引入模糊聚类方法,通过对操作响应进行分类,建立操控意图与目标运动特征之间的关系模型.通过充分的仿真试验,对比研究了跟踪平稳性、快速性、准确性等指标,结果说明该方法能够有效提升整体跟踪性能.     

论国外地下装载机的现在与未来（续3）

通过分析和介绍世界上著名地下装载机制造商近几年生产的地下装载机之新结构、新特点和新技术,简要介绍了国外地下装载机的现状与发展,以期为我国地下装载机的发展提供参考。     

395BI型电铲铲斗斗前臂的更换工艺

文中简要分析了395BI型电铲铲斗底板断裂、磨损的原因,着重讲述铲斗的组装及焊修工艺,概括说明修复后的395BI型电铲铲斗投入露天煤矿生产之后保持完好的近况,为此,395BI型电铲铲斗的成功修复,为以后此类大型焊接结构件的焊接维修提供可借鉴经验。     

半自动输弹机电机控制系统设计

采用前馈补偿PID控制算法对半自动输弹机伺服电机PID控制参数进行设定。运用MATLAB/Simulink软件对控制系统进行仿真,分析推弹失败的速度曲线,得到速度波动对推弹的影响;重新调整PID参数,降低了外界扰动对输弹机电机系统的扰动,得到了较好的电机速度特性,成功地将弹丸推入枪膛。     

半自动钢筋气压焊在梅山大桥工程中的应用

梅山大桥工程全部钢筋连接接头有98 000个,现在采用进口半自动钢筋气压焊设备已经焊接完成φ32HRB335钢筋接头30 000个。按照行业标准《钢筋焊接及验收规程》JGJ18-2003中规定,抽取试样100组,分别进行拉伸和弯曲试验,试验结果证明,试样100%合格。此技术可降低成本,经济效益显著。     

C02气体保护焊在油田设备制造中的应用

针对吐哈石油机械厂抽油机焊接过程中存在的一些问题,进行了研究分析,并提出了相应的改进措施。     

Semi-automatic analysis of two-dimensional electrophoretic gels

A powerful technique, two dimensional gel electrophoresis, has recently become available for the analysis of biological material. This technique allows the proteins of a sample to be mapped on a two-dimensional polyacrylamide gel. The research outlined here involves a multi-disciplinary approach to the semi-automatic comparison of two gels of biologically similar materials. The aim of the project is to identify the significant differences between the gels and point them out to the electrophoresis expert. This job, when done by hand, can be time consuming, since the gels are distorted and can contain hundreds of protein spots. Automatic analysis of 2D gel separations has proved to be extremely difficult using statistical methods. Non-reproducibility of gel separations is also difficult to overcome using automatic systems. However, the human eye is extremely good at recognizing patterns in images, and human intervention in semi-automatic computer systems can reduce the computational complexity. This paper focuses on the intelligent knowledge-based systems aspects of the project, and in particular the work of the first author. The results demonstrate that the semi-automatic approach can produce reliable results quickly. Further work, beyond the scope of this paper, focuses on creating a database of gels for comparison.     

Equivalent fatigue load in machine-tool probabilistic reliability. Part II: Calculation methodology and practical applications

This paper deals with the calculation and practical application of equivalent fatigue load in probabilistic reliability. To illustrate the physical meaning and practical use of the theoretical formulae derived in Part 1 of this paper, Part II considers the design example of a multicut semi-automatic lathe. It analyses the power and torque characteristics and special statistical law of load and speed change for the lathe. Equivalent fatigue loads with specified reliability for the important driving elements of the lathe under various working conditions are found on the basis of calculating the reliability factor, the power utilization and the speed change factor. Use of the equivalent fatigue load determined in the paper to design the lathe elements would enable it to obtain the expected reliability.