基于Oracle数据复制技术的研究与应用

数据复制是数据库的一项重要功能,它可以实现异地数据共享和提高应用程序的性能和可用性。在概述了Oracle数据复制的基本原理和两种运行机制的基础上,结合实际应用,介绍了一种运用Oracle高级复制技术实现企业信息远程分布式处理的数据库系统的方法。     

半导体企业高级订单承诺系统

为提高半导体企业的客户服务质量,研究半导体产业多工厂多阶段生产供应链系统和多客户关系、多产品市场环境下的订单承诺（Available-to-Promise,ATP）优化问题.以利润和客户满意度为目标,充分利用半导体产品之间的替代性,建立基于线性规划的高级ATP系统.该系统应用优化软件OPL将模型中的内容转化为OPL语言.仿真实验表明,该方法能帮助半导体企业提高订单响应速度,做出可靠ATP决策.     

先进控制在铜锍吹炼造渣期终点判断的应用

针对现代铜冶金工业急待解决的铜锍吹炼工序“定终点”难的问题．本文提出一种基于先进控制技术的铜锍吹炼终点判断方法,建立了造渣期终点自动控制的DMC模型,并利用MATLAB软件的模型预测控制工具箱进行试验仿真。结果显示系统具有较高的准确度和良好的鲁棒性,证明了该策略的可行性。     

野战防空建设与弹炮结合防空武器

以准备打赢一场现代条件下的高技术局部战争为目的,从加强合成、提高陆军整体作战能力出发,针对高技术战争特点,对野战防空建设与武器装备发展提出新的看法;着重论证了尽快发展弹炮结合防空武器的必要性,并对发展道路和高炮口径选择提出建议。     

Aperture-Adjustable and Repairable Metal-Based MOFs Catalysis Membrane for Water Purification

Precise adjustment of the pore size, damage repair, and efficient cleaning is all challenges for the wider application of inorganic membranes. This study reports a simple strategy of combining dry-wet spinning and electrosynthesis to fabricate stainless-steel metal–organic framework composite membranes characterized by customizable pore sizes, targeted reparability, and high catalytic activity for membrane cleaning. The membrane pore size can be precisely customized in the range of 14–212 nm at nanoscale, and damaged membranes can be repaired by targeted treatment in 120 s. In addition, advanced oxidation processes can be used to quickly clean the membrane and achieve 98% flux recovery. The synergistic actions of the membrane matrix and the selective layer increase the adsorption energy of active sites to oxidant, shorten the electron transfer cycle, and enhance the overall catalytic performance. This study can provide a new direction for the development of advanced membranes for water purification and high-efficiency membrane cleaning methods.     

基于LightGBM的EAST杂质破裂预警

对全超导托卡马克核聚变实验装置东方超环(EAST)运行放电期间发生的杂质破裂进行预测对未来的聚变装置的长脉冲稳态放电有重要意义. 根据杂质破裂的物理特性筛选出的2018年的334炮杂质破裂炮数据以及2021年的1628炮非破裂炮作为训练炮, 再由等离子体平衡、密度、电流以及辐射等8种诊断信号组成的训练样本以LightGBM算法训练出杂质破裂预测模型. 实验结果表明LightGBM算法模型可以对杂质破裂进行准确预测(成功预测率96.29%), 非破裂炮的误判率6.87%. 研究结果证明利用LightGBM进行EAST等离子体杂质破裂预警是可行的方案.     

“双碳”目标下先进煤炭清洁利用发电技术研究综述

在“双碳”目标下,煤炭发电逐渐由主体能源向托底能源转变,燃煤发电技术在煤炭清洁处理、高效率发电及排放物低碳处理等各方面不断发展,同时也向深度调峰辅助服务、“燃煤+”耦合发电等方向转型,探索高效清洁的先进煤炭发电技术意义重大。分析超临界煤气化、超临界煤液化以及超临界水煤氧化等煤炭清洁利用技术的研究现状,讨论超临界水煤氧化热力发电技术、超临界CO₂动力循环技术、整体煤气化联合循环技术、超超临界循环流化床技术等先进燃煤低碳发电方式的技术特点,论述碳捕集利用与封存技术的发展趋势,同时展望煤炭清洁利用发电技术的转型方向,为碳达峰碳中和目标的实现提供发展思路。     

基于曲线拟合的毫米波雷达安装角度校准方法

毫米波雷达的安装角度校准是雷达正常使用并与摄像头进行数据融合的重要前提,雷达安装角度偏 转过大会导致雷达数据与摄像头数据融合失败,影响高级驾驶辅助系统(Advanced Driving Assistance System,ADAS) 的正常使用。文中提出一种基于曲线拟合的毫米波雷达安装角度校准方法,当车辆在道路上行驶时辅以车辆输入 的车速和偏航角信息,通过2000 个静止点进行曲线拟合得到雷达需要补偿的角度。相较于选择有护栏的道路进行 绕行和在标定场地部署角反射器进行安装角度校准的方法,这种方法适用的场景种类更多并且校准时间从15 分钟 以上缩短为5 分钟以下。经过实验验证,在花费更短时间完成校准后,校准精度与其它自校准方法相同为±5°。     

Aliphatic Polycarbonate‐Based Solid‐State Polymer Electrolytes for Advanced Lithium Batteries: Advances and Perspective

Conventional liquid electrolytes based lithium‐ion batteries (LIBs) might suffer from serious safety hazards. Solid‐state polymer electrolytes (SPEs) are very promising candidate with high security for advanced LIBs. However, the quintessential frailties of pristine polyethylene oxide/lithium salts SPEs are poor ionic conductivity (≈10⁻⁸ S cm⁻¹) at 25 °C and narrow electrochemical window (<4 V). Many innovative researches are carried out to enhance their lithium‐ion conductivity (10⁻⁴ S cm⁻¹ at 25 °C), which is still far from meeting the needs of high‐performance power LIBs at ambient temperature. Therefore, it is a pressing urgency of exploring novel polymer host materials for advanced SPEs aimed to develop high‐performance solid lithium batteries. Aliphatic polycarbonate, an emerging and promising solid polymer electrolyte, has attracted much attention of academia and industry. The amorphous structure, flexible chain segments, and high dielectric constant endow this class of polymer electrolyte excellent comprehensive performance especially in ionic conductivity, electrochemical stability, and thermally dimensional stability. To date, many types of aliphatic polycarbonate solid polymer electrolyte are discovered. Herein, the latest developments on aliphatic polycarbonate SPEs for solid‐state lithium batteries are summarized. Finally, main challenges and perspective of aliphatic polycarbonate solid polymer electrolytes are illustrated at the end of this review.