FF智能仪表在核燃料后处理试验萃取装置中的应用

介绍了一种基于FF智能仪表的核燃料后处理萃取装置的控制系统结构。针对萃取试验台架的测控要求,给出了FF智能仪表的应用和在Delta V系统中的组态方法。     

Robust multi-robot coordination in pick-and-place tasks based on part-dispatching rules

This paper addresses the problem of realizing multi-robot coordination that is robust against pattern variation in a pick-and-place task. To improve productivity and reduce the number of parts remaining on the conveyor, a robust and appropriate part flow and multi-robot coordinate strategy are needed. We therefore propose combining part-dispatching rules to coordinate robots, by integrating a greedy randomized adaptive search procedure (GRASP) and a Monte Carlo strategy (MCS). GRASP is used to search for the appropriate combination of part-dispatching rules, and MCS is used to estimate the minimum-maximal part flow for one combination of part-dispatching rules. The part-dispatching rule of first-in–first-out is used to control the final robot in the multi-robot system to pick up parts left by other robots, and the part-dispatching rule of shortest processing time is used to make the other robots pick up as many parts as possible. By comparing it with non-cooperative game theory, we verify that the appropriate combination of part-dispatching rules is effective in improving the productivity of a multi-robot system. By comparing it with a genetic algorithm, we also verify that MCS is effective in estimating minimum-maximal part flow. The task-completion success rate derived via the proposed method reached 99.4% for 10,000 patterns.     

暴雨推求洪水计算程序研发及应用

本文总结了各地暴雨推求洪水程序化的共性问题和关键过程的编程处理,特别是针对性地提出了图表拟合、公式推导和暴雨统计参数格网数据库建设等方法,引入数学拟合、推导和数字高程模型等技术,旨在供各地编制暴雨推求洪水程序时参考。使用该技术开发的江西暴雨洪水程序,率先在全国实现了暴雨推求洪水网页在线计算,精度可靠、计算便捷。     

医院建筑节能监管系统数据库设计

针对山东省医院建筑节能监管系统对省内各医院节能监管平台上传的监测数据进行统计分析、分类汇总、展示发布的需求,设计符合要求的标准化全省医院建筑节能监测数据库;介绍数据库系统架构及数据库系统开发流程。     

超声波在化学工程中的应用

超声波由于其特殊的化学和机械效应 ,在化工领域取得了越来越多的应用 ,该文主要介绍超声波在干燥、萃取、均化及超分子材料体 (微泡 )制备中的应用现状     

30CrMoNiV511高中压转子锻件制造

介绍30CrMoNiV511高中压转子锻件的特点,对30CrMoNiV511转子锻件的材质以及性能要求进行分析,确定制造工艺以及检验规程     

Distribution-free approach for stochastic Joint-Replenishment Problem with backorders-lost sales mixtures,and controllable major ordering cost and lead times

In this paper, we study the periodic-review Joint-Replenishment Problem (JRP) with stochastic demands and backorders-lost sales mixtures. We assume that lead times aare made of two major components: a common part to all items and an item-specific portion. We further suppose that the item-specific component of lead times and the major ordering cost are controllable. To reflect the practical circumstance characterized by the lack of complete information about the demand distribution, we adopt the minimax distribution-free approach. That is, we assume that only the mean and the variance of the demand can be evaluated. The objective is to determine the strict cyclic replenishment policy, the length of (the item-specific component of) lead times, and the major ordering cost that minimize the long-run expected total cost. To approach this minimization problem, we present a first optimization algorithm. However, numerical tests highlighted how computationally expensive this algorithm would be for a practical application. Therefore, we then propose two alternative heuristics. Extensive numerical experiments have been carried out to investigate the performance of the developed algorithms. Results have shown that the proposed alternative heuristics are actually efficient and seem therefore promising for a practical application.     

液气分离器石棉衬垫法埋弧自动焊焊接工艺评定

板厚8—12 mm的液气分离器筒体采用埋弧焊+焊条电弧焊的焊接工艺,生产效率低,工作量大,焊接质量不稳定.详述改进后的石棉板衬垫法埋弧自动焊焊接工艺评定过程,焊接工艺评定结果合格.继而在多台液气分离器产品推广应用,实践证明此改进工艺可操作性和适用性强,保证了焊接质量,取得了较好的效果.     

Proof of a lower bound formula for the expected reward in the levin-robbins sequential elimination procedure

We prove the general validity of a lower bound formula conjectured by Levin and Robbins to give a lower bound for the expected reward in a sequential elimination procedure designed to identify the best of c binomial populations.     

网络培训系统在企业中的应用

介绍网络培训系统的开发基本过程,并对主要模块和数据库的主要结构设计及基本内容进行重点说明。