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.     

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。     

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。     

Current condition and future directions for lean construction in highways projects: A small and medium-sized enterprises (SMEs) perspective

The aim of this study is to identify the parameters defining how Lean Construction (LC) is being implemented (current condition) and how LC can be further promoted (future direction) from a Small-Medium Sized Enterprises (SMEs) perspective. Although SMEs constitute the largest group in construction supply chains, LC, as an emerging phenomenon in civil construction project management, has been rarely investigated from an SMEs perspective. Also, overlooking the more macro factors like project governance and supply chain management, LC deployments have been mainly discussed from a production process perspective to date. After a review of the extant literature and 20 interviews with managers from the highways sector, a list of 31 current condition and 40 future direction statements were produced, classified under the delivery, process, training, project governance and supply chain related headings and used in a questionnaire survey with 110 responses. The current condition highlights problems like a short-term relations structure, competitive tendering mechanisms, fragmentation, problems in engaging with SMEs for LC, unstandardised LC techniques, and issues with convincing SMEs to deploy LC by demonstrating the business case on mutual benefits. Action items relating to the current project delivery structure were given the highest importance by the supply chain, alongside the LC training and project governance issues for the future of LC at highways SMEs. Additionally, a statistically significant correlation was identified among many future action items.     

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.     

循环球转向器可靠性磨损试验系统的设计与实现

转向系统是汽车主动安全的重要技术,转向器是转向系统的关键部件,其可靠性直接影响汽车安全性能。为了正常进行循环球式转向器磨损试验,参照《汽车电动助力转向装置技术条件与台架试验方法》标准,采用交流伺服技术、智能集成技术与微机测控技术,设计了双工位循环球转向器可靠性磨损试验系统。试验运行表明:该试验系统经济高效,稳定可靠,满足循环球转向器磨损试验标准规定功能。系统应具备实时监控数据、实时绘制曲线和检测空载性能三大功能,从而完成循环球转向器出厂前的可靠性磨损试验,减小因服役寿命周期内的失效而导致交通安全事故的概率。     

“规土融合”在武汉市重点功能区实施性规划中的实践

"规土融合"一直是我国规划管理领域和政府机构改革的热点话题。自2009年武汉市实现"两规合一"以来,通过不断的理论和实践探索,武汉市以大力推进建设国家中心城市为目标,明确了以重点功能区实施性规划为抓手的工作路径,以期实现规划与土地的有序衔接和统一协调,进而全面提升城市功能。实施性规划的提出,既要求科学合理地实施土地节约集约利用,引导城市建设开发,又要从开发实施的角度有机衔接规划编制与规划管理,加强规划的可操作性和可实施性。研究基于武汉市重点功能区实施性规划的工作实践,明晰对"规土融合"的认识,挖掘实施性规划中体现"规土融合"的关键要素,从规划编制实践、工作框架构建到规划落实情况,总结实施性规划的编制内容、编制成果审批与应用以及工作组织与规划编制方法,对大城市重点地区实施性规划的科学操作模式及工作方法进行了探索。     

水泵远程控制系统设计与实现

本文为助力构建资源节约型社会，研究现今我国水泵监管以及维护情况，制定全新的水泵远程控制体系，给未来水泵的保护和管理提供参考。     

How to get proteomics to the clinic? Issues in clinical proteomics,exemplified by CE‐MS

Clinical proteomics is defined as application of proteome analysis aiming at improving the current clinical situation. As such, the success of clinical proteomics should be assessed based on the clinical impact following implementation of the findings. While we have experienced significant technological advancements in mass spectrometry in the last years, based on the above measure, this has not at all resulted in similar advancements in clinical proteomics. Although a large number of proteomic biomarkers have been described, most of them were not subsequently validated, and certainly have had no impact in clinical decision making as yet. Under the current conditions, it appears likely that the situation will not change significantly: we will be flooded by reports on biomarkers, but not see any implementation. In this article, some key issues in proteomic biomarker research are pinpointed, based on the experience with CE‐MS, likely also holding true for biomarkers resulting from other analysis domains.     

Understanding IS/IT implementation through metaphors: A multi-metaphor stakeholder analysis in an educational setting

Notwithstanding the importance of metaphors in organizational research, this paper recognizes that few empirical studies examining the multiple metaphors elicited by stakeholders (for instance, teachers, administrators and managers) in the context of IS/IT implementation within an educational setting have been conducted. Using a total of 30 in-depth interviews carried out within a further and higher educational college in the United Kingdom, the broad aim of this paper is to examine the metaphors produced from organizational members in their accounts of IS/IT implementation. The analysis reveals a number of dominant metaphors that feature in IS literature on which participants drew—journey, military, machine, bodily/illness, sports and religion—as well as a number of additional, novel metaphors not widely acknowledged within IS literature, namely nautical, horticultural and child-like metaphors. The paper proposes that practitioners and managers should be aware of the multiple metaphorical expressions members of an organization use as it may help to clarify the tensions arising during IS/IT implementation. Furthermore, an exploration of these metaphors generates fresh insights into implementation practices, which may otherwise go unnoticed.