一种面向网络化制造的车间层生产控制体系结构及实现技术

随着网络化制造的发展,车间层生产控制在企业制造中的作用日益增强。提出了一种基于CORBA、SOAP及A- gent技术的车间层生产控制体系结构,研究了企业内部生产控制尤其是远程联盟企业间协同生产控制的实现技术。运 用该体系结构和实现技术,企业提高了市场应变与制造能力,从而快速响应外部环境。     

广东省清洁生产发展现状及对策思考

近年来,清洁生产在广东省得到了一定程度的发展,为了促使广东省清洁生产工作持久深入的进行,有必要对广东省清洁生产进一步推进的障碍进行分析,并作出相应的对策思考。     

ERP系统生产计划模块在石化企业的应用

为实现精细化管理,广州分公司ERP系统生产计划模块实现了生产订单细化管理,以订单归集生产装置成本。为使数据可以有效准确的集成,开发了物料与兰剂数据管理系统和能源管理系统。上线以来取得了良好的经济效益。     

国内外发酵肉制品历史及发展现状比较

本文首先描述了发酵肉制品的起源,种类及国内外的发展历史.并主要对国内外研究现状进行了比较,归纳总结了国内外发酵肉制品的发展方向和科技需求.最后针对我国发酵肉制品行业的尚未解决的具体问题进行了探讨.     

生产现场数字化管理的探讨与实践

通过对企业生产制造现场的生产管理存在问题的分析,提出了面向企业生产制造现场的数字化生产管理系统的解决方案,介绍了该数字化生产管理系统的定位、功能模块的划分,软件实现的流程和系统的实施应用。该系统在车间生产现场管理中取得了良好的应用效果。     

YDZ(A)井下直流电法仪在安阳主焦煤业的应用

本文介绍了井下直流电法仪在安阳主焦煤业的应用,对直流电法仪的优缺点和应用中需注意的问题作了总结和讨论.     

Effects of the German Renewable Energy Act on structural change in agriculture – The case of biogas

The strong political support for biogas production in Germany over the past decade has greatly affected agricultural production, farms and land markets. This paper analyzes the effects of Germany's biogas policies on agricultural development by using the agent-based simulation model AgriPoliS. Particular focus is placed on the effects of the previous German Renewable Energy Act (REA, German “EEG”) of 2012, as well as the latest amendments, which were added in 2014. Our results show that under the previous REA and its predecessors, biogas production provided an attractive investment opportunity, especially for large farms, which led to a boost in biogas production. However, this policy also caused distortions within the agricultural sector, including increasing land rental prices. These effects particularly threatened farms that were not able to invest in biogas, as well as smaller biogas farms. On average, biogas farms could not increase their profitability. The main reason for this effect can be seen in the fact that a significant share of the value added is transferred via increased rental prices to land owners. The amendment of the REA in 2014, which reduced support levels substantially, partly attenuates some of these effects, though the previous policy will cast a long shadow.     

VPI-FP: an integrative information system for factory planning

Nowadays, one of the main challenges in factory planning is the consistent and coherent information modelling along planning processes. Despite the current efforts in the fields of virtual production as well as digital and virtual factory, planning and simulation applications mostly support only the analysis and the optimisation of single planning aspects. However, to match nowadays challenges, planners require solutions that provide an integrated view to evaluate planning scenarios in advance and to achieve increasing production quality and efficiency. The concept of virtual production intelligence (VPI) provides a basic concept for such an integrative information system that enables planners to integrate, to aggregate and to analyse data gathered during one planning project as well as to compare different projects. In this study, we present such an information system for factory planning using the concept of the VPI. The focus lies in particular on the information modelling as well as the information integration and evaluation. Therefore, the study presents theoretical basics and implementations of the VPI platform within a precise application scenario in factory planning. This is to process and provide a consolidated information base along the whole planning process to support factory planning projects.     

Reliability and maintainability analysis to improve the operation of the limoncello production line

The reliability, maintainability, failure rate and repair rate models of a limoncello automated production line for a period of 8 months at machine and entire line level were carried out. It was pointed out that (i) the real operating time of the limoncello production line (LPL) is 89.35%, whereas for the rest 10.65%, the LPL is under repair, (ii) the Weibull distribution provided the best fit of the failure data for the LPL to describe the time‐between‐failures (TBFs), whereas the time‐to‐repairs (TTRs) are lognormal distributed, and (iii) the failure rate of the production line increases, implying that the current maintenance strategy is not adequate and must be improved. This particular methodology can also be utilised in the beverage industry sector by the machinery manufacturers and the manufacturers of bottled products to improve the design and operation management of the bottling production line.     

CME Forum: a response to “Construction flow index: a metric of production flow quality in construction”

The study of types of flow in construction is a relatively new field. This paper reviews the work of Sacks et al. and reveals that they have applied a production-line metaphor with recognition of two production flows. Process flow: locations are equated with products moving down a production line. Operations flow: work crews are equated to work stations. Their work proposes an index of the quality of production flow in construction, but the research design has three significant flaws: the skilled interpretation of flow-line charts is not in turn applied to the interpretation of their example charts; the conceptual framework does recognize that the underlying metaphor requires levels of detail in both location and task that is not supported in their analysis. The meaning of “quality of flow” in this context is not defined. This debate raises important epistemological questions for those working in lean construction and location-based management. While the concept of “production flow quality” is important, the Sacks et al. methodology does not address the detailed planning of individual crews. It is only possible to apply the production-line metaphor if micro-management is adopted as detailed planning.