Multimedia Resources: An Information Model and Its Application to an MPEG2 Video Codec

Still today, diagnosing a problem withmultimedia resources, such as video and sound cards, isinsufficiently automated. These resources thereforecannot be accurately managed. One reason for this is the lack of their thorough modeling. In this paper,we fulfill this need, by proposing a generic informationmodel, which we further apply to an MPEG2 video codec.We highlight the main characteristics of this kind of codec, identify parameters thatinfluence these characteristics, and reveal some of thetrade-offs that the application developer can considerin order to design efficient software for MPEG2 codecs. In addition to the benefits of this modelingfor the user and the application developer, we also showhow useful it could be for the providers of distributionservices, such as "live" video transmission. These providers can use our model to achieveresource management on an end-to-end basis.     

Toward an Automated Attack Model for Red Teams

To better understand system vulnerabilities, proactive security services use red teams that simulate malicious attacks. The authors contend that an attack model with UML-based use cases, sequence and state chart diagrams, and XML would best help red teams achieve attack automation.     

T-S模糊模型在焙烧建模过程中的应用

该文是鞍钢烧结总厂球团车间燃烧系统优化控制的重要组成部分,针对焙烧的实际生产流程,深入分析了焙烧系统的动态和稳态特性并采集到实际数据,运用混合学习算法建立了实际运行过程的模糊模型;进而运用MATLAB对所建模型进行了仿真检验,并将仿真检验结果与BP网建模进行比较,说明模糊建模能很好的逼近实际系统的动态响应过程,并在收敛速度及建模精度方面优于BP网。     

嵌入式系统在自动化仪表中的应用

根据嵌入式系统在现代工业中的应用现状,结合自动化仪表的相关内容,重点介绍了当今新型智能化、网络化的仪器仪表是在新的设计模式--软硬件协同设计,选择高性能的嵌入式微处理器,在实时操作系统的强大支持下研究开发出来的。     

自动化模型控制方案在选矿生产上的应用

选矿是一个综合了物理、化学的机理复杂的生产过程,选矿过程也包含了过程控制中许多难以处理的复杂特性,如时间滞后性、多变量、耦合、非线性、不确定性和随机扰动性,精确的数学模型很难建立,在这种前提下我们采用了模型预测控制方案、在线优化前馈-反馈控制方案等控制,并取得了良好的使用效果。     

Prajna: Adding Automated Reasoning to the Visual- Analysis Process

Applications and systems can represent knowledge in various ways. Graphic displays might help a data analyst infer new information through interactive visualizations. Knowledge represented as a collection of facts can be used for automatic inference, although it might be represented or stored in various archives, such as databases or formatted files. Developers who create applications for knowledge representation frequently must contend with not only data challenges but also challenges caused by a wide variety of software toolkits, architectures, and standards for knowledge representation. To overcome these obstacles, Vision Systems & Technology, Inc. initiated the Prajna project. The result was a Java toolkit designed to provide various capabilities for visualization, knowledge representation, geographic displays, semantic reasoning, and data fusion. This article is part of a special issue on knowledge-assisted visualization.     

基于大数据的两客一危全过程安全监管模型及平台

随着公路网络的建设完善,区域间运输效率得到极大提升。但是如何提高道路交通运输安全水平,是当前亟需解决的重大课题。在此背景下,针对道路交通运输中两客一危营运车辆的交通运行安全行为展开研究,首先分析了两客一危营运车辆的运行特征,然后构建了两客一危营运车辆非法运营判别算法模型,最后基于大数据技术设计了两客一危非法营运动态监管全过程安全监管系统框架。应用表明,基于大数据的两客一危非法营运动态监管算法,能够准确识别两客一危车辆的疑似非法运营行为,为综合执法提供有效依据。     

Application of an Ordinal Optimization Algorithm to the Wafer Testing Process

In this correspondence, we have formulated a stochastic optimization problem to find the optimal threshold values to reduce the overkills of dies under a tolerable retest level in wafer testing process. The problem is a hard optimization problem with a huge solution space. We propose an ordinal optimization theory-based two-level algorithm to solve for a vector of good enough threshold values and compare with those obtained by others using a set of 521 real test wafers. The test results confirm the feature of controlling the retest level in our formulation, and the pairs of overkills and retests resulted from our approach are almost Pareto optimal. In addition, our approach spends only 6.05 min in total in a Pentium IV personal computer to obtain the good enough threshold values     

设计特征模型到分析特征模型的自动转换方法

针对有限元分析建模的需求,提出一种将工程零件的设计特征模型自动转换为相应的分析特征模型的方法.首先将设计特征模型分解为所有正特征剩余体的集合,然后从各正特征剩余体中分解出一组扫成体和非扫成体,再采用基于二维轮廓的方法从各扫成体中确定出候选分析特征区域,最后通过合成候选分析特征区域得到真正的分析特征区域,并在此基础上生成分析特征和分析特征模型.实验结果表明该方法是有效的.     

支持用户界面自动生成的界面模型

为实现软件用户界面的工程设计,论文提出了一种支持用户界面自动生成的界面模型FMP。它利用功能模型(F)和对象模型(M)捕捉与界面相关的功能和数据信息,用交互模型(M)表达这些信息和控制关系。然后依据交互模型的描述,利用表示模型(P)建立内部对象和外部显示元素的对应关系,规划界面布局,从而指导实现用户界面的自动生成。     

基于能力成熟度的信息系统监理过程改进研究

结合信息系统工程监理的业务特点,以过程管理为驱动来实现信息系统工程实施的里程碑监理目标.分析了信息系统软件监理过程的改进方向,提出了基于CMM模型的信息系统软件监理过程的改进方法,并完善了各个成熟度级别的监理业务活动模型,探讨了在CMM模型下设计和优化监理流程的问题,最后提出了监理过程持续改进措施.文章研究的成果,有利于实现对信息系统工程的质量控制、投资控制、进度控制的最佳目标,为提高信息系统工程项目监理的服务质量提供参考.     

自适应内模控制方法在磨矿过程中的应用

针对磨矿生产过程中球磨机给矿环节存在的大滞后、大惯性、参数时变等特性,提出了一种增益自适应内模控制方法,将内模控制和对象增益参数辨识算法相结合,通过在线辨识被控对象模型的增益参数,对内模控制器和被控时象模型进行校正,以减少模型参数变化和各种干扰对系统的影响.计算机仿真和实际应用效果均表明,与常规PID控制及IMC控制效果相比,该控制方法对于阶跃响应具有超调小、响应时间快、鲁棒性能好等特点,满足磨矿生产过程对控制器性能的要求,实现了球磨机给矿环节的稳定化控制,为选矿过程综合自动化系统的实施奠定了基础.     

Automated Recurrent Neural Network Design to Model the Dynamics of Complex Systems

A general purpose implementation of the tabu search metaheuristic, called Universal Tabu Search, is used to optimally design a locally recurrent neural network architecture. The design of a neural network is a tedious and time consuming trial and error operation that leads to structures whose optimality is not guaranteed. In this paper, the problem of choosing the number of hidden neurons and the number of taps and delays in the FIR and IIR network synapses is formalised as an optimisation problem, whose cost function to be minimised is the network error calculated on a validation data set. The performance of the proposed approach has been tested on the problem of modelling the dynamics of a non-isothermal, continuously stirred tank reactor, in two different operating conditions: when a first order exothermic reaction is occurring; and when two consecutive first order reactions lead to a chaotic behaviour. Comparisons with alternative neural approaches are reported, showing the usefulness of the proposed method.     

Application of Quantile Graphs to the Automated Analysis of EEG Signals

Neural Processing Letters - Epilepsy is classified as a chronic neurological disorder of the brain and affects approximately 2% of the world population. This disorder leads to a reduction in...     

DSP自动代码生成在数字化接收机中的应用

随着各种大规模可编程和高速数字集成电路的不断涌现,电子系统的体系结构和设计方法也在发生显著的变化,其中的一个重要特征是由传统的模拟方式向数字方式转变.采用数字技术设计系统不但能够克服模拟方式存在的诸如一致性较差和不易调试等缺点,而且还能够完成过去采用模拟方式难以完成的工作,如对雷达瞬时参数的测量;采用数字技术还有一个明显的优点是可以在相当程度上实现设计过程的自动化,例如使用Matlab的Real-Time Workshop工具实现程序代码的自动生成.本文首先给出雷达瞬时参数测量的数学模型,然后在Matlab环境下搭建起其仿真模型,在仿真验证功能正确后使用Real-Time Workshop工具自动生成面向TI公司数字信号处理芯片(DSP)TMS320C6701的CCS工程文件并在目标板上进行代码的调试.     

软件过程模型分析及应用策略

在比较分析不同软件过程模型的基础上,提出了关于软件过程设计的三种策略,并且举例说明了策略在软件项目中的应用.实践证明,这些软件过程设计策略在项目实施的过程中起到了很好的指导作用.     

流程工业管控一体化的关键-MES

简述了MES定义，给出了流程工业MES的模型，详细介绍了其功能，并列举了一实例。     

An Implementation of an Automated Protocol Synthesizer (APS) and Its Application to the X.21 Protocol

In the past, a number of methods have been proposed to model and validate communication protocols that have already been designed. However, design criteria and design aids are still lacking for designing correct protocols. The objective of developing automated protocol synthesizers is to provide a systematic way of designing new communication protocols such that their correctness can be ensured.     

铜转炉吹炼过程剩余热组合预测模型及应用

提出了一种吹炼剩余热组合预测模型,以便能根据剩余热准确确定冷料的加入量,提高冷料的使用率;首先,基于吹炼的化学反应过程得到的剩余热计算公式,采用递推最小二乘法,修正剩余热计算公式,建立热量衡算模型;然后,利用递推最小二乘法,修正剩余热计算经验公式;最后采用组合预测算法综合集成两种模型作为剩余热计算的预测模型;实际应用结果表明:利用集成方法建立的预测模型的相对误差控制在10%的波动范围内,具有较高的预测精度.     

粗糙集理论在简化过程建模参数中的应用

利用粗糙集理论知识约简的特点,以连续催化重整反应过程中重整产品辛烷值监控建模参数选择为例,对生产过程工况特征参数建立决策表,计算条件属性的重要性,对决策表进行属性约简,简化过程建模参数。此外还将该方法与主成分分析法作了比较。最后利用选择的建模参数建立起神经网络模型。