Game and Dynamic Communication Path-Based Pricing Strategies for Microgrids Under Communication Interruption

Nowadays,the microgrid cluster is an important application scenario for energy trading.In trading,one of the most important research directions is the issue of pricing.To determine reasonable pricing for the microgrid cluster,data communication is used to create the cyber-physical system(CPS),which can improve the observability of microgrids.Then,the following works are carried out in the CPS.In the physical layer:1) Regarding trading between microgrids and the load,based on the generalized game...     

边界感知的实时语义分割网络

目前多数实时语义分割网络不仅同时处理边界和纹理等细节信息而且还忽略了语义边界区域特征,从而导致物体边界分割质量下降。针对该问题,提出一种边界感知的实时语义分割网络,主要从三个方面提高边界语义分割质量。提出了边界感知学习机制利用位置信息降低边界特征和轮廓附近细节的耦合度使边界感知和位置关系相互促进。设计轻量级区域自适应模块增强卷积网络对复杂语义边界区域的建模能力。根据采样区域像素贡献值不同设计了高效的空洞空间金字塔池化模块以增强重要的细节和语义特征。实验方面,与基准相比,在Cityscapes验证集上精度提升了约5.8个百分点,在Cityscapes测试集上以47.2 FPS的推理速度使精度达到了74.9%。在CamVid数据集上与BiSeNetV2算法相比mIoU提升了约3.96个百分点。     

勘探人才队伍建设为科学勘探发展提供保障

自1958年石油部成立松辽石油勘探大队至今,大庆油田勘探队伍随着油田半个世纪的发展,通过各种形式的教育培训,不断提高队伍的文化和技术素质,已建立和形成了一支专业齐全、力量雄厚、敢打硬仗的勘探队伍,在勘探理论发展、技术进步和科研攻关上取得丰硕成果,为大庆油田的发现和发展做出了突出贡献。为了更好地保障油田4000×10^4t原油持续稳产和创建“百年油田”的战略目标,勘探系统正在按照科学勘探的总体思路,扎实推进,大打勘探进攻仗,努力把勘探系统建成能够自主创新、自我完善、高效运行的有机整体。     

U-制造的概念、特性、主要优势和关键技术

随着物联网技术的飞速发展,以及制造企业精细化管理、实时化控制的需求,一种新兴的制造物联新模式——基于泛在计算的智能制造(U-制造)应运而生。对U-制造进行综合论述:回顾和总结国内外相关研究现状;给出U-制造的概念,通过与云制造、网络化制造等已有制造范式的比较,明确其主要特性;简要分析U-制造的主要优势;列举并阐述U-制造实际应用过程中涉及的若干关键技术。     

一种提高数控车床主轴精度的调整方法

通过对数控车床主轴精度品质的提升,阐述了主轴精度在冷检、热检和负荷试验时的精度变化规律,优化了工艺方案,提高了主轴箱主轴精度变化范围的一致性,实现了产品质量和效率的双提升。近年来,随着数控技术的普及,数控加工和数控设备的应用突飞猛进,掌握数控技术的人才越来越多,有关数控编程和数控实际操作的书籍或教程也很多;但是,对影响数控设备关键使用性能之一的数控机床主轴箱的主轴精度指标的检测和后期维修调整方法的介绍却很少[1]。     

高速切削刀具的发展现状

对国内外高速切削刀具的发展现状进行了综合评述 ,重点介绍了高速切削刀具材料和高速切削刀具技术 (包括刀具动平衡技术、刀柄系统、刀具安全性、可转位面铣刀结构、刀具监测技术等 )的开发及应用     

高速切削刀具磨损寿命的研究

分析了高速切削时刀具的磨损形态 ,综述了各种高速切削刀具材料 (包括陶瓷刀具、立方氮化硼刀具、金刚石刀具、金属陶瓷刀具和涂层刀具 )高速切削时的磨损机理 ,讨论了高速切削铸铁、淬硬钢和镍基合金时刀具的磨损寿命。     

A review on the progress towards improvement in surface integrity of Inconel 718 under high pressure and flood cooling conditions

Self-conditioning performance of polishing pad is an important characteristic to influence processing efficiency and service life in chemical mechanical polishing (CMP). The slurry can react with the pad surface, which affects its self-conditioning performance in fixed abrasive polishing process. Wear ratio of wafer material removal rate (MRR) and pad wear rate is introduced to evaluate self-conditioning performance of fixed abrasive pad (FAP). To clear the effect of chemical additive on FAP self-conditioning, wear ratio, FAP surface topography, friction coefficient, and acoustic emission signal of polishing process were investigated in fixed abrasive polishing of quartz glass with ferric nitrate, ethylenediamine (EDA), and triethanolamine (TEA) slurry, respectively. Results indicate that TEA slurry can provide excellent self-conditioning of FAP in fixed abrasive polishing of quartz glass. MRR and wear ratio maintain high levels during the whole polishing process. Friction coefficient and acoustic emission signal are more stable than that of the other two chemical additives. An appropriate amount of TEA, which is beneficial to enhance MRR and extends service life of FAP, is added in the polishing slurry to improve FAP self-conditioning in fixed abrasive polishing process.     

A time-space discretization method in milling stability prediction of thin-walled component

The stability prediction of thin-walled workpiece milling is an awkward problem due to the time variant of dynamic characteristics during milling process. Integrating the time discretization method for stability prediction mentioned in many articles, a novel time-space discretization method for thin-walled component milling stability prediction is proposed based on thin plate theory and mode superposition principle, which includes the effects of the engagement position between cutter and workpiece and multi-modes of the system. The results show that the method presented is very reliable and efficient, and its accuracy is also in good agreement with experimental results. Additionally, the method can be used to handle various complex boundary conditions by means of the updated Rayleigh-Ritz solutions together with the penalty method. Two case studies are performed to explain the validation of the method as well as milling experiments of a half-clamped thin plate.     

稀土Ce掺杂Ti/Sb-SnO2电极的电化学性能及应用

采用热分解法制备Ti/Sb-SnO2电极和Ti/Sb-SnO2/Ce电极,采用扫描电子显微镜(SEM)、X射线衍射(XRD)仪和电化学实验技术对电极的表面形貌、物相组成和电化学性能进行表征。结果表明:Ti/Sb-SnO2电极表面形成了SnO2晶胞,经稀土Ce改性后SnO2晶粒明显细化,SnO2衍射峰强度变强且峰形宽化。Ti/Sb-SnO2/Ce电极峰电流值最大、表面稳定性增强和催化活性明显提高。在最佳工艺条件下,Ti、Ti/Sb-SnO2和Ti/Sb-SnO2/Ce电极对橙黄G目标污染物的去除率分别为46.6%、61.9%和94.9%,且降解过程均符合一级反应动力学模型,速率常数分别为0.0289、0.0633、0.1971min-1,Ti/Sb-SnO2/Ce电极的速率常数分别是Ti/Sb-SnO2电极的3倍,Ti电极的7倍,表明在电极表面涂层中掺杂稀土元素Ce可有效提高电极的性能。