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2019 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)最新文献

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Stochastic Nonlinear Programming Model for Power Plant Operation via Piecewise Linearization 基于分段线性化的电厂运行随机非线性规划模型
Tomoki Fukuba, Tetsuya Sato, T. Shiina, K. Tokoro
In this paper, we consider the application of mathematical optimization models to energy problems. Using the latest information technology, we try to utilize renewable energy whose output is unstable. Such efforts are collectively called smart communities. Stochastic programming deals with optimization under uncertain conditions. Since the output of solar power generation in a smart community is uncertain, application of stochastic programming is required. Considering practical operational constraints, this model becomes a stochastic programming problem involving nonlinear recourse, which cannot be solved with typical solvers directly. The problem can be reformulated as a large-scale mixed integer programming problem by piecewise linear approximation to obtain an optimal solution. In our algorithm, we add points for piecewise linear approximation iteratively and increase accuracy of the approximation. In numerical experiments, the effectiveness of the stochastic programming model is shown by comparing it with the deterministic model. Moreover, we calculate a recovery period of investment cost for photovoltaic generation and a storage battery and show usefulness of our model when evaluating a practical operation.
本文考虑了数学优化模型在能源问题中的应用。利用最新的信息技术,我们试图利用产量不稳定的可再生能源。这些努力被统称为智能社区。随机规划处理不确定条件下的优化问题。由于智慧社区太阳能发电的输出是不确定的,需要应用随机规划。考虑到实际操作约束,该模型成为一个涉及非线性资源的随机规划问题,不能用典型解直接求解。通过分段线性逼近,可将该问题转化为一个大规模混合整数规划问题,以求得最优解。在该算法中,我们迭代地增加了分段线性逼近的点,提高了逼近的精度。在数值实验中,将随机规划模型与确定性模型进行了比较,证明了随机规划模型的有效性。此外,我们还计算了光伏发电和蓄电池投资成本的回收期,并证明了该模型在评估实际运行时的实用性。
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引用次数: 0
Reverse Logistics Barriers: A Case of Plastic Manufacturing Industries in Zambia 逆向物流壁垒:赞比亚塑料制造业的案例
B. Mwanza, C. Mbohwa
To alleviate the depletion of resources, application of reverse logistics (RL) systems in the plastic manufacturing industries is necessary. Numerous challenges exist in the plastic industry that prevent sustainable RL of Plastic Solid Wastes (PSWs). These challenges include; logistics costs, production costs, raw material availability etc. The study assesses RL barriers facing the Zambian plastic manufacturing and/or recycling industries. It identifies sustainable strategies from success stories in developed economies. The barriers preventing sustainable implementation of RL in the Zambian context include; ‘lack of household participation in PSWs recycling schemes,’ ‘lack of recycling technology and infrastructure,’ ‘ineffective enforcement of extended producer responsibility (EPR),' ‘none-existence of legislations and regulations for effective enforcement of PSWs recycling and recovery,’ and ‘combination of different plastic materials that complicate recycling.’ The study recommends the following strategies for implementation; ‘having a household PSWs segregation system’ and ‘establishment of recycling ssystems for industries in the plastics industry.’ The strategies provided in this paper are applicable to industries that manufacture and /or recycle other products. To policy makers and the government, the paper provides a foundation for developing policies.
为了缓解资源的枯竭,在塑料制造行业应用逆向物流(RL)系统是必要的。塑料工业中存在着许多阻碍塑料固体废物(psw)可持续再循环的挑战。这些挑战包括:物流成本,生产成本,原材料供应等。该研究评估了赞比亚塑料制造和/或回收行业面临的RL障碍。它从发达经济体的成功案例中确定可持续战略。阻碍在赞比亚可持续实施强化学习的障碍包括:“缺乏家庭参与psw回收计划”,“缺乏回收技术和基础设施”,“生产者延伸责任(EPR)的执行不力”,“没有有效执行psw回收和回收的立法和法规”,以及“不同塑料材料的组合使回收变得复杂”。该研究建议以下实施战略:“建立家庭废物分类系统”和“建立塑料工业的回收系统”。本文提供的策略适用于制造和/或回收其他产品的行业。对于政策制定者和政府来说,本文为制定政策提供了依据。
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引用次数: 3
Digital Twin-based Cyber Physical System for Sustainable Project Scheduling 基于数字孪生的可持续项目调度网络物理系统
R. Chakrabortty, H. Rahman, H. Mo, M. Ryan
In the presence of increasingly dynamic environments, frequent uncertainties, high customer specifications, strict project deadlines, and stricter requirements on sustainability, modern project managers are challenged in their ability to schedule and control projects. Thus, in the context of sustainable project scheduling problem, two important elements are to be considered as decision variables: the input elements of a scheduling (e.g. resources: workforce, machine, money) that enable the realization of a schedule for a project and the output element that are consequences of the realization of the project (e.g. completion time, energy, noise, pollution, waste etc.). In this context, integration of innovative approaches and concepts under the framework of fourth generation industrial revolution is must to build up a sustainable project scheduling model (SPSM). Considering this burning issue, this paper introduces digital twin (DT) technology and cyber physical system (CPS) principles to develop effective and efficient sustainable project scheduling systems and proposes a framework to show how they are interconnected through physical and cyber layers. The proposed framework is also applied to a real-life energy system as a case study for identification of the degradation of a physical layer.
在日益动态的环境中,频繁的不确定性,高客户规格,严格的项目截止日期,以及对可持续性的更严格要求,现代项目经理在计划和控制项目的能力方面受到挑战。因此,在可持续项目调度问题的背景下,需要考虑两个重要因素作为决策变量:调度的输入因素(例如资源:劳动力,机器,金钱),使项目的进度得以实现;输出因素是项目实现的后果(例如完成时间,能源,噪音,污染,浪费等)。在此背景下,必须整合第四代工业革命框架下的创新方法和理念,构建可持续的项目调度模式。考虑到这一紧迫问题,本文介绍了数字孪生(DT)技术和网络物理系统(CPS)原则,以开发有效和高效的可持续项目调度系统,并提出了一个框架,以显示它们如何通过物理层和网络层相互连接。所提出的框架也适用于现实生活中的能源系统,作为识别物理层退化的案例研究。
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引用次数: 4
Perspective Exploratory Methods for Multidimensional Data Analysis 多维数据分析的视角探索性方法
D. Valis, L. Zák, Z. Vintr
Technical practice abounds with numerous diverse data records. Sometimes the data is complete, sometimes it is censored or truncated. It is not always easy and straightforward to record the data. And even after, the data processing is by no means simple, especially when the data forms a significant set of a huge size and large informational diversity. Typically, the data containing more observed variables, either dependent or independent, is called multidimensional. Also, if the multidimensional data contains numerous records, it is not easy to determine which dependent or independent variables are important for further study. Our aim and ambition is to introduce a couple of methods which are very suitable and sometimes absolutely necessary for exploratory data analysis. The methods help us to determine i) the level of significance of the data for single recorded variables, ii) the level of mutual dependence among the data, and iii) the choice of the best representatives for further data study. The recommended methods used for the exploratory data analysis are presented with practical examples.
技术实践中有大量不同的数据记录。有时数据是完整的,有时被删减或截断。记录数据并不总是那么容易和直接。即使在此之后,数据处理也绝非简单,特别是当数据形成一个规模巨大、信息多样性大的重要集合时。通常,包含更多观察变量的数据(依赖的或独立的)称为多维的。此外,如果多维数据包含大量记录,则不容易确定哪些因变量或自变量对进一步研究是重要的。我们的目标和抱负是介绍一些非常适合的方法,有时是绝对必要的探索性数据分析。这些方法帮助我们确定i)单个记录变量数据的显著性水平,ii)数据之间的相互依赖性水平,以及iii)为进一步数据研究选择最佳代表。通过实例介绍了探索性数据分析的推荐方法。
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引用次数: 0
Application of Feature Selection Method to Error Factor Extraction of Multifunction Peripheral 特征选择方法在多功能外设误差因子提取中的应用
M. Ko, Tatsuya Inagi, Masaaki Takada, T. Yano
Multifunction peripheral (MFP) manufacturers provide customers with remote maintenance services, such as supplies provision and automatic firmware updates, to lower customer burdens and to avoid device downtime. Such remote services are required for maintenance so that Japanese machine manufacturers can deliver products to foreign markets, because service bases in overseas locales must cover broader geographical areas than those in Japan. When MFP devices experience a fault, they generally alert users of an error. Although some faults can be solved remotely, there are faults that require an engineer to perform on-site actions. To repair them on-site efficiently, online investigation and pre-assessment of fault factors will be effective. In this paper, we apply the Group Lasso regularization method for logistic regression to select features determined as error factors. We evaluate the engine on two kinds of error examples: those frequently causing alerts in MFP models in the past, and those causing alerts due to part wear. This engine is expected to help engineers determine causal factors of errors.
多功能外设(MFP)制造商为客户提供远程维护服务,如耗材供应和自动固件更新,以降低客户负担并避免设备停机。这种远程服务是维修所必需的,这样日本机器制造商才能将产品交付到国外市场,因为海外地区的服务基地必须覆盖比日本更广泛的地理区域。当MFP设备出现故障时,它们通常会向用户发出错误警报。虽然有些故障可以远程解决,但也有一些故障需要工程师现场处理。为了在现场进行有效的维修,对故障因素进行在线调查和预评估是有效的。在本文中,我们应用逻辑回归的Group Lasso正则化方法来选择确定为误差因子的特征。我们在两种错误示例上对发动机进行了评估:过去MFP模型中经常引起警报的错误示例和由于零件磨损引起警报的错误示例。该引擎有望帮助工程师确定错误的原因。
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引用次数: 0
Latin American Oil Export Destination Choice: A Machine Learning Approach 拉丁美洲石油出口目的地选择:一种机器学习方法
H. Jia, R. Adland, Yuchen Wang
We implement machine learning techniques to predict the destination for Latin American crude oil exports. Utilizing a unique dataset of micro-level crude oil shipment data, derived from the Automatic Identification System (AIS) for ship tracking, we investigate the micro- and macro-level determinants of the destination choice. We use decision tree, Random Forests and boosted trees techniques in training a model to predict the export destinations which can help to identify seller/buyer groups with similar oil trade requirements. The results show that while macro data, such as regional oil price differences and crack spreads, impacts the crude oil flow, micro level information about the oil shipment are key attributes in the destination prediction. Our research has practical implications, particularly with regards to prediction of oil transportation demand, spatial price arbitrage and short-term forecasting of regional crack spreads.
我们实现了机器学习技术来预测拉丁美洲原油出口的目的地。利用来自船舶跟踪自动识别系统(AIS)的独特微观原油运输数据集,我们研究了目的地选择的微观和宏观层面的决定因素。我们使用决策树、随机森林和提升树技术来训练模型来预测出口目的地,这可以帮助识别具有相似石油贸易需求的卖方/买方群体。结果表明,区域原油价格差异和裂缝价差等宏观数据影响原油流量,而原油运输的微观信息是目的地预测的关键属性。本文的研究在石油运输需求预测、空间价格套利和区域裂缝价差短期预测等方面具有实际意义。
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引用次数: 1
A Composite Indicator for Supply Chain Performance Measurement: A Case Study in a Manufacturing Company 供应链绩效评价的复合指标——以某制造企业为例
Rui Oliveira, C. Cubo, Rui Estrada, A. C. Fernandes, P. Afonso, M. Carvalho, P. Sampaio, J. Roque, M. Rebelo
This paper proposes a methodology to develop and implement a Composite Indicator (CI) to measure the performance of Supply Chain processes. It reflects the aggregation of individual measures, related to the same process, with a weighted average, in order to assess the global performance in terms of both efficiency and effectiveness. Through a case study in a manufacturing company, a concept validation was performed by implementing the methodology in the Return process of the Supply Chain. The results showed that the combination between a Composite Indicator and a Business Intelligence tool provides a better understanding of the overall performance of a given process, facilitating also the identification of root causes. This paper aims to contribute to the supply chain performance management research field, proposing a methodology to implement a Composite Indicator, which is a topic insufficiently explored in the existent literature.
本文提出了一种开发和实施复合指标(CI)来衡量供应链过程绩效的方法。它反映了与同一进程有关的个别措施的总和和加权平均数,以便从效率和效力两方面评价全球的执行情况。通过一个制造企业的案例研究,通过在供应链的返回过程中实施该方法来进行概念验证。结果表明,复合指标和商业智能工具之间的组合可以更好地理解给定流程的整体性能,也有助于识别根本原因。本文旨在为供应链绩效管理研究领域做出贡献,提出一种实施综合指标的方法,这是现有文献中尚未充分探讨的话题。
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引用次数: 0
Investigation and Prioritization of Performance Indicators for Inventory Management in the University Hospital 大学医院库存管理绩效指标的调查与排序
P. Sirisawat, N. Hasachoo, Thunwa Kaewket
The objective of this study focus on the investigation and prioritization of the inventory performance indicators in the university hospital. The results of this study found that in the group of main criteria quality (Q) is the most important indicator for inventory management in the university hospital. For sub-criteria, patient safety e.g. delays, errors (Q4) is the most important indicators in the group of quality, replenishment time (T1) is the most important indicator in the group of the time, inventory cost (F1) is the most important indicators in the group of financial. Inventory turnover (P1) is the most important indicators in the group of productivity Therefore, the presented results of this study will help the people who do work in the healthcare industry or related industry for using to be the guideline for improving the performance of inventory management.
本研究的目的是对大学医院的库存绩效指标进行调查和排序。本研究结果发现,在主要指标组中,质量(Q)是高校医院库存管理最重要的指标。对于子标准,患者安全如延误、差错(Q4)是质量组中最重要的指标,补货时间(T1)是时间组中最重要的指标,库存成本(F1)是财务组中最重要的指标。库存周转率(P1)是生产力组中最重要的指标,因此,本研究的结果将有助于在医疗保健行业或相关行业工作的人员使用,作为提高库存管理绩效的指导方针。
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引用次数: 2
Long Working Hours as a Buffer to Adjust Labor Costs 长时间工作是调整劳动力成本的缓冲
Takafumi Miyazaki, N. Ouchi
The Japanese government is increasingly promoting “work-style reform” and many Japanese companies are working on redressing long working hours. Several studies have suggested that long working hours play the role of a buffer to adjust labor costs when an economic negative shock occurs. However, the conditions under which long working hours are utilized as a buffer, are unclear. This study attempts to clarify what kind of industries utilize long working hours as a buffer. We calculate the contribution rate of non-scheduled hours worked to the rate of change of total labor costs and conduct correlation analysis between this rate and each index indicating industry characteristics. The results reveal that labor-intensive and growth industries utilized non-scheduled hours worked as a buffer. This suggests that there is a risk of losing such a buffer by redressing working hours, especially in these industries.
日本政府正在越来越多地推动“工作方式改革”,许多日本公司正在努力解决长时间工作的问题。一些研究表明,当经济出现负面冲击时,长时间工作可以起到缓冲调整劳动力成本的作用。但是,利用长时间工作作为缓冲的条件尚不清楚。本研究试图澄清什么样的行业利用长时间工作作为缓冲。我们计算了非计划工时对总人工成本变化率的贡献率,并对该贡献率与反映行业特征的各项指标进行了相关性分析。结果表明,劳动密集型和增长型产业利用非计划工作时间作为缓冲。这表明,通过调整工作时间,尤其是在这些行业,存在失去这种缓冲的风险。
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引用次数: 0
A Fault Location Method Considering Distribution Network Partition Based on Deep Learning 一种考虑配电网络划分的深度学习故障定位方法
Jiaqing Zhao, Zhongjian Dai, Zhongyao Chen, Hongen Ding, Puliang Du
In this paper, a fault location method considering distribution network partition based on deep learning is proposed, in which the Tensorflow framework is employed to establish and construct the fault location model of the distribution network. This method firstly collects the current and voltage data to form fault data vectors through the Feeder Terminal Unit. Combined with the complex network theory, each node degree is calculated to represent the node priority, and the topology of the distribution network is partitioned to form each regional model. Secondly, it builds a feature extracting network and a Deep Neural network to mine the mapping relations between fault data vectors and fault sections and form the final fault location model through training. Case studies show that compared to the back propagation (BP) neural network model and the support vector machine (SVM) model, the deep learning model has faster convergence speed and higher fault location accuracy.
本文提出了一种基于深度学习的考虑配电网分区的故障定位方法,该方法利用Tensorflow框架建立并构造配电网的故障定位模型。该方法首先通过馈线终端单元采集电流和电压数据,形成故障数据向量。结合复杂网络理论,计算各节点度表示节点优先级,并对配电网拓扑进行划分,形成各区域模型。其次,构建特征提取网络和深度神经网络,挖掘故障数据向量与故障剖面之间的映射关系,通过训练形成最终的故障定位模型;实例研究表明,与BP神经网络模型和支持向量机模型相比,深度学习模型具有更快的收敛速度和更高的故障定位精度。
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引用次数: 0
期刊
2019 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)
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