How can online schedules improve communication and estimation tradeoff?

We consider remote state estimation and investigate the tradeoff between the sensor-to-estimator communication rate and the remote estimation quality. It is well known that if the communication rate is one, e.g., the sensor communicates with the remote estimator at each time, then the remote estimation quality is the best. It degrades when the communication rate drops. We present one optimal offline schedule and two online schedules and show that the two online schedules provide better tradeoff between the communication rate and the estimation quality than the optimal offline schedule. Simulation examples demonstrate that significant communication savings can be achieved under the two online schedules which only introduce small increment of the estimation errors. © 1991-2012 IEEE.

The misbehavior of value and the discipline of the will.

Most reinforcement learning models of animal conditioning operate under the convenient, though fictive, assumption that Pavlovian conditioning concerns prediction learning whereas instrumental conditioning concerns action learning. However, it is only through Pavlovian responses that Pavlovian prediction learning is evident, and these responses can act against the instrumental interests of the subjects. This can be seen in both experimental and natural circumstances. In this paper we study the consequences of importing this competition into a reinforcement learning context, and demonstrate the resulting effects in an omission schedule and a maze navigation task. The misbehavior created by Pavlovian values can be quite debilitating; we discuss how it may be disciplined.

Finite horizon LQR control with limited controller-system communication

We consider finite-horizon LQR control with limited controller-system communication. Within a time-horizon T , the controller can only communicate with the system dschedule for unstable first-order systems and a class of higher-order systems. We also discuss when such a control data schedule remains optimal (or is near optimal) for general systems. © 1963-2012 IEEE.

SAFER系列密码算法的设计与分析

SAFER系列密码算法的总体结构采用SP-网络,它的设计具有其独到的几个特色.分析SAFER系列密码算法的设计思想,沿着设计者对它们不断改进的思路,分别描述其混淆层、扩散层、密钥扩展算法的性质和对它们的攻击.最后提出几个尚需进一步考虑的问题.

挣值法在软件项目成本和进度监控中的应用

针对软件项目存在"产品进度延误,费用剧增"的问题,以挣值法作为理论基础,结合软件项目的开发过程,通过应用挣值法的计划投资额、实际投资额、完成投资额三个关键中间变量,费用偏差、进度偏差二个差异分析变量指标和成本偏差率、进度偏差二个指标变量的指标统计分析软件项目成本花费、进度执行情况,为软件项目成本、进度的联合监控提供依据,使项目管理工作目标清晰,过程控制高效有序,从整体上良好地把握了软件项目的运行状态,实现了对软件项目成本和进度的监控.

动态调度系统中自适应用户界面的设计与实现

该文以炼化企业的动态调度系统为应用背景,以面向动态调度的自适应用户界面的设计与实现为主要研究内容,分析了当前炼化企业动态调度系统用户操作的流程以及界面的需求并建立起相应的数学模型。借鉴自适应用户界面的相关研究成果,设计了自适应用户界面的体系结构以及用户的动态行为过程,针对流程行业的应用特点提出了利用产生式推理和基于上下文的用户意图捕捉的方法,最后给出应用实例。文中所述方法已经成功在企业中得到应用。使用结果表明,该方法能够有效地开发动态调度系统的自适应用户界面,获得满意效果。

一种新的分布式控制系统容错调度算法

目前多数容错调度算法在调度非周期任务时采用预留时间的方法,非周期任务无法得到充分响应.针对该问题,提出一种新的分布式控制系统容错调度算法,采用任务集划分的方法在不同处理机上运行不同的周期任务子集,使每个处理机具有不同的非周期任务预留时间,当非周期任务发生时,即可得到有效响应.结果表明,该方法能提高容错调度的效率.

Production of EUV power with SECRAL

The high power EUV source is one of key issues in the development of EUV lithography which is considered to be the most promising technology among the next generation lithography. However neither DPP nor LPP seems to meet the requirements of the commercial high-volume product. Insufficiency of DPP and LPP motivate the investigation of other means to produce the EUV radiation required in lithography. ECR plasma seems to be one of the alternatives. In order to investigate the feasibility of ECR plasma as a EUV light source, the EUV power emitted by SECRAL was measured. A EUV power of 1.03W in 4 pi sr solid angle was obtained when 2000W 18GHz rf power was launched, and the corresponding CE was 0.5%. Considering that SECRAL is designed to produce very high charge state ions, this very preliminary result is inspiring. Room-temperature ECR plasma and Sn plasma are both in the planned schedule.

A moored underwater energy conservation system for profiling measurement

There is a need to obtain the hydrologic data including ocean current, wave, temperature and so on in the South China Sea. A new profiling instrument which does not suffer from the damage due to nature forces or incidents caused by passing ships, is under development to acquire data from this area. This device is based on a taut single point mid-water mooring system. It incorporates a small, instrumented vertically profiling float attached via an electromechanical cable to a winch integral with the main subsurface flotation. On a pre-set schedule, the instrument float with sensors is winched up to the surface if there is no strip passing by, which is defined by an on-board miniature sonar. And it can be immediately winched down to a certain depth if the sonar sensor finds something is coming. Since, because Of logistics, the area can only be visited once for a long time and a minimum of 10 times per day profiles are desired, energy demands are severe. To respond to these concerns, the system has been designed to conserve a substantial portion of the potential energy lost during the ascent phase of each profile and subsequently use this energy to pull the instrument down. Compared with the previous single-point layered measuring mode, it is advanced and economical. At last the paper introduces the test in the South China Sea.

智能化工程机械发展战略研究

The intelligent level of construction machinery abroad is described in the article. In association with automation level of domestic construction machinery, developing targets are pointed out. Some plans and schemes in national technical 863 projects are introduced, which may be of reference to domestic enterprises when making developing schedule for organization.

卷烟厂制丝线生产过程建模与计划仿真

对当前卷烟厂制丝线计划与调度管理中存在的不足进行了介绍,并在建立制丝生产线生产过程模型的基础上,提出了用于解决问题的计划仿真系统,对所采用的仿真策略进行了详细介绍。采用这一策略实现的仿真系统能够很方便的适应于其他行业类型的仿真。

基于Multi-Agent的生产过程建模与仿真技术研究

某些流程行业由于采用按配方进行分组加工的模式组织生产,在排产时存在多条路径调度优化的问题,应用一般的优化算法对于现场在线调度难以给出满意结果,而基于Agent的过程仿真在解决离散、非线性系统模拟方面有显著的优势,本文采用Agent的方法对生产过程建模,然后对方案组内的备选方案进行仿真,通过对比各方案的仿真结果找到最优的方案作为执行方案,为现场的优化排产提供决策支持。

卷烟厂制丝线计划仿真系统开发

文章首先分析了卷烟厂制造执行系统(MES)的特点以及发展现状,在此基础上对制丝线进行了介绍,指出了当前制丝线计划与调度管理中存在的不足,并提出了用于解决问题的计划仿真系统,最后在一个模拟的卷烟厂制丝线环境下实现了该系统。

鞍钢冷轧厂制造执行系统研究

鞍钢新轧钢股份有限公司冷轧厂制造执行系统(MES)覆盖了从接收用户合同到产品发货的整个生产经营活动。接收用户合同后,系统自动生成优化的主生产计划、要料计划和机组作业计划,在生产过程中,系统对生产状况进行全面跟踪,对出现的异常情况进行合理调度,并且,冷轧MES与上游厂、公司ERP、过程控制系统和厂级管理系统连成一体,协同工作。该软件在实际应用中取得了令人满意的效果。