基于数字媒体技术的军事模拟训练软件的设计与实现

针对目前军事教学训练中部分科目不便进行实战训练的现实,依据某基层炮兵部队实际教学需求,采用数字媒体开发软件Authorware设计开发了炮兵阵地警戒部署模拟训练软件.训练软件实现了对人员和设备的模拟部署、针对部署进行的敌我对抗、部署成绩判定等功能效果,经实际教学实践应用效果良好.     

开源仿真引擎Delta3D在军用仿真中的应用

由于商业仿真软件的高昂费用以及源码的不开放,许多军事仿真已转而使用开源仿真软件。Delta3D是一款由美军开发的全功能游戏与仿真引擎,通过对底层模块进行隐藏封装,将多个相关功能模块整合在一起形成一个使用更加方便的高级API函数库,目前在军用仿真领域已经较有影响。文章介绍了Delta3D的模块组成,应用程序开发的基本框架,以及与相关仿真软件的配合使用,并就开发过程中的相关问题给出了建议。     

Real-time visual simulation on PCs

In 1997 the US Army's Simulation, Training, and Instrumentation Command (STRICOM), recognizing the increasingly attractive economies of scale associated with PC 3D rendering technology, awarded a contract to the University of Central Florida's Institute for Simulation and Training (IST) to study the suitability of PCs for military real-time visual simulation (VisSim). The result was the Low-Cost Visual (LCV) Project. To date the LCV team has studied specifications for military VisSim systems to see how they compare with feature and performance criteria for PC graphics systems, and developed a real-time visual simulation benchmark suite. Currently we are trying to relate the complexity of visual databases used in the benchmark suite tests to databases used in typical military visual simulations. We also contemplate studying available graphics development software tools for the PC and may examine how available PC technology can be used in embedded real-time systems for military combat vehicles. Our results should interest the general VisSim community, however, since problems associated with real-time 3D rendering on a PC are the same whether simulations are built for the military or for a virtual reality arcade, for example     

Supply network modelling and simulation methodology

Supply network management in today’s business climate characterized by high uncertainty, globalization of business, outsourcing, shorter product life-cycles, and high customer expectations is extremely challenging. Simulation can be a valuable tool for supply network analysis, planning, optimization, evaluation, and risk management. This paper presents a methodology for modelling both structure and dynamics of complex supply networks based on process approach. It also describes the model-driven simulation methodology and the main components of the simulation software solution: model database, process library, knowledge base, and execution engine. Finally, simulation results of the case supply network are presented.     

基于特征分析的军用电子装备仿真训练软件开发环境建模

针对军用电子装备仿真训练软件目前开发中存在的复用率不高、开发效率低等问题,采用领域特征分析的方法,对该类软件的开发领域进行了服务、功能、行为三个层次的活动分析,并建立了该领域仿真对象管理、仿真模型驱动、运行支撑管理等服务的特征模型。实践证明,以此特征模型作为输入建立的集成开发环境,能够较好地解决该领域内软件开发过程中存在的构件重用问题,同时能使软件系统的开发效率得到显著提高。     

基于EPANET与ArcEngine的供水管网建模软件

为避免采用商业建模软件需要面对的二次开发问题,使得建模软件更为贴合不同水司的需求,提出了基于EPANET和ArcEngine快速构建供水管网建模软件的方法。该系统采用Geodatabase存储模型数据,以COM技术对EPANET源代码进行改进和封装,在ArcEngine的.NET框架中实现界面和大部分功能,开发时间短,费用低,功能针对性强,已在华北某省会城市得到成功应用。     

Redesigning business processes: a methodology based on simulation and process mining techniques

Nowadays, organizations have to adjust their business processes along with the changing environment in order to maintain a competitive advantage. Changing a part of the system to support the business process implies changing the entire system, which leads to complex redesign activities. In this paper, a bottom-up process mining and simulation-based methodology is proposed to be employed in redesign activities. The methodology starts with identifying relevant performance issues, which are used as basis for redesign. A process model is “mined” and simulated as a representation of the existing situation, followed by the simulation of the redesigned process model as prediction of the future scenario. Finally, the performance criteria of the current business process model and the redesigned business process model are compared such that the potential performance gains of the redesign can be predicted. We illustrate the methodology with three case studies from three different domains: gas industry, government institution and agriculture.     

UML辅助化工过程模拟软件设计

面向对象技术是目前获得广泛应用的软件设计方法，在化工过程模拟领域也有大量应用。UML(United Model Language，统一建模语言)采用图形方式和基于静态样式的软件设计方式进行软件开发，可有效地解决化工模拟软件开发过程中软件开发人员与化工专业人员交流困难的问题，并可提高软件的复用程度和开发效率，是一种有效的面向对象的辅助设计工具。文中利用UML建立了化工过程单元和化工过程系统的对象模型。实践分析表明，利用UML辅助化工过程模拟软件设计可有效降低软件分析设计的难度，提高软件设计的质量和速度。     

军队院校计算机仿真技术类课程的建设与思考

论述了军队院校开设计算机仿真技术类课程的重要性,分析了仿真类课程的性质与特点,在此基础上对计算机仿真技术类课程建设中的课程体系、课程内容和教学方法等进行了阐述,并给出了该类课程的改革建议。     

Model-based simulation of legal policies: framework,tool support,and validation

Simulation of legal policies is an important decision-support tool in domains such as taxation. The primary goal of legal policy simulation is predicting how changes in the law affect measures of interest, e.g., revenue. Legal policy simulation is currently implemented using a combination of spreadsheets and software code. Such a direct implementation poses a validation challenge. In particular, legal experts often lack the necessary software background to review complex spreadsheets and code. Consequently, these experts currently have no reliable means to check the correctness of simulations against the requirements envisaged by the law. A further challenge is that representative data for simulation may be unavailable, thus necessitating a data generator. A hard-coded generator is difficult to build and validate. We develop a framework for legal policy simulation that is aimed at addressing the challenges above. The framework uses models for specifying both legal policies and the probabilistic characteristics of the underlying population. We devise an automated algorithm for simulation data generation. We evaluate our framework through a case study on Luxembourg’s Tax Law.     

C3I系统仿真技术研究

C3I系统的出现是指挥自动化的重大进展。它的仿真在现代军事中具有非常重要的地位。实现C3I系统的仿真是一个复杂而困难的问题。本文重点论述了以VPI公司的COTS仿真软件为平台，对C3I系统进行建模与仿真，对我国C3I系统仿真的开发具有重要的现实意义。     

Implementing IDEF techniques as simulation modelling specifications

Recent advantages in computer software have seen the introduction of powerful and easy-to-use simulation products, but unfortunately, still locking the ability to analyse real world problems in a high level terminology. A recent project undertaken for the company ATNS, forms the case study for demonstrating the merging of IDEF techniques and simulation modelling into meaningful business models.     

国产化混合云平台建设与性能优化的研究

为了验证实时性业务迁移至国产化混合云平台的可行性,采用国产化主机、虚拟化云平台软件、容器化云平台软件搭建混合云平台,对时统和组播两个具有代表性的实时业务模型迁移进行了研究;为了保证混合云平台测试范畴的完整性,硬件普适性,实验设计了四种混合云模式,并适配两个品牌主机,对时统和组播两个业务模型按照组合方式进行了八个云模型的迁移实践;实验针对不同混合云模式综合采用了软件和硬件调优技术,达到了同时满足时统业务模型满足时延不大于8ms和组播业务模型满足数据包丢包率不大于10-6 个/s两个性能指标;得出时敏性业务可以迁移到国产化混合云平台的结论,并通过分析混合云四种模式优劣势,对时敏性业务和通用业务的云平台部署模式提供了决策支持。     

Software components for parallel multiscale simulation: an example with LAMMPS

Multiscale simulation is a promising approach for addressing a variety of real-world engineering problems. Various mathematical approaches have been proposed to link single-scale models of physics into multiscale models. In order to be effective, new multiscale simulation algorithms must be implemented which use partial results provided by single-scale software. This work considers aspects of software design for interfacing to existing single-scale simulation code to perform multiscale simulations on a parallel machine. As a practical example, we extended the large-scale atomistic/molecular massively parallel simulator (LAMMPS) atomistic simulation software to facilitate its efficient use as a component of parallel multiscale-simulation software. This required new library interface functions to LAMMPS that side-stepped its dependence on files for input and output and provided efficient access to LAMMPS’s internal state. As a result, we were able to take advantage of LAMMPS’s single-scale performance without adding any multiscale-specific code to LAMMPS itself. We illustrate the use of LAMMPS as a component in three different modes: as a stand-alone application called by a multiscale code, as a parallel library invoked by a serial multiscale code, and as a parallel library invoked by a parallel multiscale code. We conclude that it is possible to efficiently re-use existing single-scale simulation software as a component in multiscale-simulation software.     

一种雷达回波实时仿真的软件实现方法研究

为了便于将雷达回波仿真应用于实践,提出一种雷达回波实时仿真的软件实现设计方法。按照雷达信号接收处理的工作原理,对雷达工作方式和战场环境分别建模并作适当简化,利用软件编程实现雷达回波仿真。利用软件实现的便捷性特点,在仿真中设计了一些交互接口,可接收对雷达工作状态的调整指令以及对模拟战场环境的修改信息。这样可实时更新生成不同环境下的动态回波信号,提高仿真应用的灵活性与通用性。仿真结果验证了该方法的可用性和有效性。     

Integrating AI planning techniques with workflow management system

There is a variety of applications that can benefit from the ability to find optimal or good solutions to a proposed problem, automatically. The artificial intelligent (AI) community has been actively involved in efficient problem-solving in complex domains such as military or spacecraft problems with successful results. In this paper, we describe the integration of AI planning techniques with an existing workflow management system. We show how these techniques can improve the overall system functionality and help automate the definition of business processes. The work is based on a short study carried out at BT research laboratories as part of a larger programme that aims to provide technologies for a new generation of business support systems.     

Design of a PCB plant with expert system and simulation approach

This paper presents a case study of using simulation in planning a new Printed Circuit Board (PCB) manufacturing system. The process simulation technique and expert system are proposed to evaluate the design alternatives and logistics management. Simulation results, such as machine utilisation, waiting time, and throughput of system are generated for evaluation. Simulation models were developed using software package SIMPROCESS, which is based on the concept of visual interactive simulation. Besides, the formation of the models is assisted by the expert system package VP-EXPERT. Each approach was found to accurately model the PCB manufacturing plant layout, provide operational and logistics performance in terms of throughput, waiting time, and resource utilisation, and provide a basis for suggesting the best modes of logistics operation.     

基于C/S模式的作战仿真系统构建

针对作战仿真系统开发效率低下的问题,提出一种基于C/S模式的作战仿真系统快速构建方法,介绍系统的整体架构,通过仿真支持层、仿真系统快速构建层和仿真应用层的三层式结构设计,使整个系统的构建成为一个既相互联系又相对独立的仿真流程,同时采用软件方法加以实现。实验结果表明,该方法能够有效提高作战仿真系统的开发效率。