跨域LVC多模态试验资源动态调度方法

针对网络信息体系联合试验环境下,试验资源种类多、互连与联合组织运用困难等特点,提出了一种跨域多模态试验资源动态调度方法。首先,构建试验资源抽象模型,提取试验资源特征关键信息,形成其统一规范化描述;然后,提出了试验资源池化管理方法,以实现试验资源信息统一发布和共享;最后,提出了试验资源调度框架,能够依据试验任务和资源池状态,快速调度试验资源。该方法可实现试验资源的按需快速灵活调度,可支持联合试验环境的敏捷快速构建。

SDN交换控制一体机设计与实现

为了克服传统网络设备管控复杂和功能难以拓展等缺点,基于软件定义网络(SDN)架构,提出了一种SDN交换控制一体机设计方法。交换模块采用支持OpenFlow协议的交换芯片进行数据转发,控制器硬件采用嵌入式计算机与交换机供电一体设计,控制器软件负责转发策略的生成与下发,并通过北向接口向上层应用开放网络功能。SDN交换控制一体机可部署于指挥信息系统接入网络,实现网络交换路由、负载均衡和安全管理等功能,并基于统一管理平台简化网络开通及管理维护过程。

网络信息体系理念再认识与发展思考

首先,通过分析网络信息(网信)世界与物理世界、认知世界的相互关系,重新认识了网信体系理念,聚焦分析了网信体系网络聚能、信息赋能和体系释能的3个重要特点和网信体系内在运行机理;然后,在此基础上,提出了发展网信体系能力平台、网信世界与物理世界及与认知世界连接平面等重点方向,并分析了云计算、数字孪生和人工智能技术在网信体系的关键赋能应用;最后,给出了建立体系思维、重视模型和数据等发展建议,从而赋强赋新军事信息系统及装备。

Force Characteristics in Continuous Path Controlled Crankpin Grinding

Recent research on the grinding force involved in cylindrical plunge grinding has focused mainly on steady-state conditions.Unlike in conventional external cylindrical plunge grinding,the conditions between the grinding wheel and the crankpin change periodically in path controlled grinding because of the eccentricity of the crankpin and the constant rotational speed of the crankshaft.The objective of this study is to investigate the effects of various grinding conditions on the characteristics of the grinding force during continuous path controlled grinding.Path controlled plunge grinding is conducted at a constant rotational speed using a cubic boron nitride（CBN）wheel.The grinding force is determined by measuring the torque.The experimental results show that the force and torque vary sinusoidally during dry grinding and load grinding.The variations in the results reveal that the resultant grinding force and torque decrease with higher grinding speeds and increase with higher peripheral speeds of the pin and higher grinding depths.In path controlled grinding,unlike in conventional external cylindrical plunge grinding,the axial grinding force cannot be disregarded.The speeds and speed ratios of the workpiece and wheel are also analyzed,and the analysis results show that up-grinding and down-grinding occur during the grinding process.This paper proposes a method for describing the force behavior under varied process conditions during continuous path controlled grinding,which provides a beneficial reference for describing the material removal mechanism and for optimizing continuous controlled crankpin grinding.

Co-existenee,Co-governance and Co-construction:An Approach to Promoting Intensive Integration of Culture and Tourism Through the Construction of the Yellow River National Culture Park

The Yellow River is known for its long history and rich cultural assets.It is essential to interpret its sophisticated cultural components,protect its ecosystem and secure its sustainable development.The Plan for the Protection,Transmission and Promotion of the Yellow River Culture and The Implementation Plan for the Construction of the Yellow River National Culture Park set out requirements and pointed out the direction for its construction.