临港装备产业区规划的若干经验和思考

通过临港装备产业区创建至今规划工作的系统回顾,对工业区规划的编制、实施、动态完善三个方面的经验进行了归纳。旨在当前经济转型背景下,对中国第二代工业区的规划工作理论进行有益的探索。     

移动支付业务发展综述

分析移动支付业务在中国的发展趋势及其定义和分类,并对移动支付业务的实现方式和典型流程进行探讨,然后研究移动支付业务的商业模式及现状。     

江西省水系连通及水美乡村建设试点县实施方案编制存在的问题及对策

为提高水系连通及水美乡村建设试点县实施方案编制质量，更好地参加全国竞争性立项，本文分析研究了江西省55个水系连通及水美乡村建设试点县实施方案和相应的专家评审意见，对实施方案编制过程中存在的符合性、完整性不够，实施范围情况调查不准等七个方面突出问题进行梳理剖析，并提出相应对策，可为实施方案编制提供参考。     

FPGA-based implementation of classification techniques: A survey

Recently, a number of classification techniques have been introduced. However, processing large dataset in a reasonable time has become a major challenge. This made classification task more complex and expensive in calculation. Thus, the need for solutions to overcome these constraints such as field programmable gate arrays (FPGAs). In this paper, we give an overview of the various classification techniques. Then, we present the existing FPGA based implementation of these classification methods. After that, we investigate the confronted challenges and the optimizations strategies. Finally, we highlight the hardware accelerator architectures and tools for hardware design suggested to improve the FPGA implementation of classification methods.     

面向电网实时运行风险的快速定级方法研究及应用

为满足电网运行实时风险评估时效性要求,解决电网运行实时风险评估与定级中效率与精度两者间协调的问题,在当前国家和主要电网企业规定的电网运行事故定级标准基础上提出了一种快速定级方法。快速定级方法充分考虑了电网运行实际特性,采取数据治理和算法重构两方面主要措施,对原判定方法进行优化处理。通过数据治理,大幅降低了对外部数据的依赖性,并取消了部分不必要的输入数据。采用算法重构,进一步将运行风险定级与实际业务流程紧密联系。以该快速定级方法为核心,构建了支撑电网运行风险分析与事故处置的实时运行风险管理系统,介绍了该系统的功能框架与系统架构。最后结合该系统在贵阳的实际应用情况,分析了快速定级方法的实际使用效益。     

Thermal error compensation of a 5-axis machine tool using indigenous temperature sensors and CNC integrated Python code validated with a machined test piece

Achieving high workpiece accuracy is the long-term goal of machine tool designers. There are many causes for workpiece inaccuracy, with thermal errors being the most common. Indirect compensation (using prediction models for thermal errors) is a promising strategy to reduce thermal errors without increasing machine tool costs. The modelling approach uses transfer functions to deal with this issue; it is an established dynamic method with a physical basis, and its modelling and calculation speed are suitable for real-time applications. This research presents compensation for the main internal and external heat sources affecting the 5-axis machine tool structure including spindle rotation, three linear axes movements, rotary C axis and time-varying environmental temperature influence, save for the cutting process. A mathematical model using transfer functions is implemented directly into the control system of a milling centre to compensate for thermal errors in real time using Python programming language. The inputs of the compensation algorithm are indigenous temperature sensors used primarily for diagnostic purposes in the machine. Therefore, no additional temperature sensors are necessary. This achieved a significant reduction in thermal errors in three machine directions X, Y and Z during verification testing lasting over 60 h. Moreover, a thermal test piece was machined to verify the industrial applicability of the introduced approach. The results of the transfer function model compared with the machine tool's multiple linear regression compensation model are discussed.     

浅议我国企业集团财务控制中预算制度控制的实施

分析了我国企业集团财务控制的重要性,阐述了制度控制的种类,探讨了预算制度控制的实施.     

计量标准设备期间核查的实施

为了保持计量标准设备检定、校准状态的良好可信度，应该实施期间核查。本文对期间核查条款要求、实施对象与优越性以及如何实施及纠正措施做了介绍和讨论，并重点介绍应用统计核查的方法验证测量设备的可靠性。     

基于任务执行全过程的工作流建模方法

针对目前工作流管理系统在描述能力、可扩展性、柔性和可封装性等方面的严重不足,提出了一种基于任务执行全过程和反馈机制及封装思想的工作流建模方法。通过给出产品开发过程的工作流模型实例,展现了这种建模方法在提高模型描述能力、提高系统可扩展性和柔性等诸方面的优势所在。对于开发可靠性高,柔性、适应性和可移植性强,封装能力好的工作流管理系统具有重要的应用价值。