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2018 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)最新文献

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Effect of Coffee Intake on Heat Rate Variability and Driving Performance in Sleep-deprived Condition 咖啡摄入对睡眠不足状态下热率变异性和驾驶表现的影响
T. Wijayanto, Tasya G. Alma, Bonifatius Bramantya Wisnugraha, Syam Rachma Marcillia, Galang Lufityanto
This driving simulation study investigates the effect of coffee intake as a countermeasure on sleepiness and driving performance decrement in sleep-deprived condition. Twelve university students (mean age of $21.2 pm 0.2$ years) drove following an urban route after 24 h sleep deprivation without drinking coffee or with a cup coffee containing 89.4 mg caffeine in two separate days and random order. Sleepiness level was assessed employing a subjective sleepiness scale and heart rate variability. The results show that consuming a cup of coffee before driving in sleep-deprived condition may enhance sympathetic nerve activities and improve driving performance. From these findings, it suggests that consuming coffee may be useful as sleepiness countermeasure in a sleep-deprived condition.
本驾驶模拟研究探讨了在睡眠不足的情况下,咖啡摄入对嗜睡和驾驶性能下降的影响。12名大学生(平均年龄21.2美元/ pm 0.2美元/年)在24小时的睡眠剥夺后,在两天内随机驾驶,不喝咖啡或喝一杯含有89.4毫克咖啡因的咖啡,沿着城市路线行驶。采用主观嗜睡量表和心率变异性评估嗜睡水平。结果表明,在睡眠不足的情况下,开车前喝一杯咖啡可能会增强交感神经活动,提高驾驶表现。这些发现表明,在睡眠不足的情况下,喝咖啡可能有助于缓解困倦。
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引用次数: 3
Product Platform Planning through Sensitivity Analysis and Improved QFD Approach 通过灵敏度分析和改进的QFD方法进行产品平台规划
Lei Zhang, Hansi Chen, Zhenlong Yuan, Xuening Chu
The identification of platform parameters plays a key role to keep equilibrium between the external diversity and internal commonality. The relationship between the performance parameter and the design parameter in the traditional Quality of House (QoH) was evaluated by a correlation degree rather than an influence degree. The influence degree measures the design parameter’s influence on the performance parameter, and be more effective to evaluate the performance-design relationship. Hence, based on virtual orthogonal experiment, a method incorporated sensitivity analysis into the improved Quality Function Deployment (QFD) is proposed. Firstly, the virtual experiment scheme is designed through the orthogonal experiment table. Secondly, a virtual experiment environment is built by the built-in software, in which the design parameters are assigned with different values and the corresponding performances are monitored in real-time. Then the sensitivity matrix for design parameter is constructed to replace the correlation matrix in the QoH. Thereafter, the improved QFD can be used to identify the platform parameters. A case study for the smartphone of Samsung Galaxy A series is implemented to verify the effectiveness of the proposed method.
平台参数的辨识是保持平台外部多样性与内部通用性平衡的关键。传统的住宅质量评价中,性能参数与设计参数之间的关系是通过关联度而不是影响度来评价的。影响程度衡量的是设计参数对性能参数的影响程度,更有效地评价了性能与设计之间的关系。为此,在虚拟正交试验的基础上,提出了一种将灵敏度分析与改进的质量功能展开(QFD)相结合的方法。首先,通过正交实验表设计虚拟实验方案。其次,利用内置软件构建虚拟实验环境,对设计参数赋值,并对相应性能进行实时监测;然后构造设计参数的灵敏度矩阵代替QoH中的相关矩阵。然后,改进后的QFD可用于识别平台参数。以三星Galaxy A系列智能手机为例,验证了该方法的有效性。
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引用次数: 1
A Predictive Approach to Define the Best Forecasting Method for Spare Parts: A Case Study in Business Aircrafts’ Industry 一种确定备件最佳预测方法的预测方法——以公务机行业为例
Reza Babajanivalashedi, A. Baboli, M. Shahzad, R. Tonadre
The cost-effective management of spare parts is an important objective for all manufacturing and service companies. One of the most difficult challenges, for this objective, is accurate demand forecasting and optimized supply planning decisions to achieve best availability level for the spare parts. The main objective of this paper is to propose a predictive approach to identify the best forecasting method with least error cost. Moreover, in business aircraft industry the best forecasting method for a part can change due to the high-level uncertainty in demand. To this purpose, a methodology to select the best forecasting method based on binary classifier machine learning is developed. Proposed methodology is applied in a real case for a well-known business aircraft. The results indicate that neural network is the best machine learning method for 98% of demand and random forest is the best machine learning method for only 2% of parts.
备件的成本效益管理是所有制造和服务公司的重要目标。为了实现这一目标,最困难的挑战之一是准确的需求预测和优化的供应计划决策,以达到备件的最佳可用性水平。本文的主要目的是提出一种预测方法,以确定误差代价最小的最佳预测方法。此外,在公务机行业中,由于需求的高度不确定性,零件的最佳预测方法可能会发生变化。为此,提出了一种基于二元分类器机器学习的最佳预测方法选择方法。并将所提出的方法应用于某知名公务机的实际案例。结果表明,神经网络对98%的需求是最好的机器学习方法,而随机森林仅对2%的零件是最好的机器学习方法。
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引用次数: 3
Methodology for Digitalization - A Conceptual Model 数字化方法论-一个概念模型
H. Ng, P. Tan, R. Lim
This paper reviews the business model and digital capability literatures for tools and techniques related to digital transformation. The theoretical gap identified from the review, combined with findings gathered from a preliminary study with 20 companies in the manufacturing and logistics sector of Singapore highlight the market need for a methodology for digitalization. Based on the inputs gathered from experts familiar with the digital technologies and business transformation, this paper presents a 5-stage conceptual model for a digitalization methodology. The conceptual provides a general structure that defines the key stages of digitalization and their interdependencies, and highlights some future research directions for refining the model for the development of a practical methodology for digitalization.
本文回顾了与数字化转型相关的工具和技术的商业模式和数字化能力文献。从审查中发现的理论差距,加上对新加坡制造业和物流业20家公司进行的初步研究得出的结果,突显了市场对数字化方法的需求。基于从熟悉数字技术和业务转型的专家那里收集的信息,本文提出了一个数字化方法论的5阶段概念模型。概念提供了一个总体结构,定义了数字化的关键阶段及其相互依存关系,并强调了一些未来的研究方向,以完善模型,以开发实用的数字化方法。
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引用次数: 9
The Role of Participation in the Factory Planning Process 参与工厂计划过程的角色
U. Dombrowski, A. Karl, Christoph Imdahl
The continuous improvement of the current construction and planning processes is a relevant factor for the company’s success. New and existing factories must be economical, flexible and attractive at the same time. On the basis of constantly changing or even new requirements, continuous planning adjustments are required. An increasingly important need in factory planning, in addition to the participation of internal planning stakeholders, is the participation of external actors. More and more often, inadequate project-specific involvement of these actors leads to delays or cost increases in factory planning projects. This can be caused, for example, by increasing regulatory requirements, declining technology acceptance of the population in the direct environment and growing legal capacity to appeal to residents ("Not-In-My-Backyard"). Therefore, the participation of external actors in factory planning projects has not been sufficiently considered in the relevant literature. In order to enable stakeholder acceptance, appropriate project-specific integration of relevant stakeholders into the construction project is crucial. The basis for efficient participation is the choice of the right participation features. This article addresses the current state of research in the intersecting point of factory planning and participation research and shows the need for further research.
持续改进当前的建设和规划过程是公司成功的一个相关因素。新的和现有的工厂必须同时经济、灵活和有吸引力。在不断变化甚至新的需求的基础上,需要进行持续的规划调整。除了内部规划利益相关者的参与外,工厂规划中越来越重要的需求是外部参与者的参与。越来越多的情况是,这些参与者对具体项目的参与不足导致工厂规划项目的延误或成本增加。例如,这可能是由于监管要求的增加、直接环境中人口对技术接受程度的下降以及吸引居民的法律能力的提高(“不在我家后院”)。因此,相关文献并未充分考虑工厂规划项目中外部行为者的参与。为了使干系人接受,将相关干系人适当地集成到建设项目中是至关重要的。有效参与的基础是选择正确的参与特征。本文阐述了工厂规划与参与性研究交叉点的研究现状,并指出了进一步研究的需要。
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引用次数: 2
Revenue and Cost Sharing Mechanism for Effective Remanufacturing Supply Chain 有效再制造供应链的收益与成本分担机制
T. Inaba
Remanufacturing has become popular as a mean to realize a sustainable society. In the remanufacturing process, two types of uncertainty reside; uncertainty of the amount of used products to be collected and that of the demand of remanufactured products. Therefore, deciding how many to collect and how many to procure is the key to success but double marginalization problem is observed if the remanufacturing process consists of two companies. To solve this problem, this study proposes a revenue and cost sharing mechanism to realize a higher expected profit as a channel and brings higher expected profits to both companies. We show its effectiveness by using numerical example. The higher expected profit brought by this proposal would make it feasible to operate remanufacturing supply chains and help accelerate the sustainable society.
作为实现可持续社会的一种手段,再制造已经成为一种流行。再制造过程中存在两种不确定性;回收旧产品数量的不确定性和再制造产品需求的不确定性。因此,决定回收多少和采购多少是成功的关键,但如果再制造过程由两家公司组成,则会出现双重边缘化问题。为了解决这一问题,本研究提出了收入和成本分担机制,以实现更高的预期利润作为渠道,为双方公司带来更高的预期利润。通过数值算例验证了该方法的有效性。该方案所带来的较高的预期利润,将使再制造供应链的运作具有可行性,有助于促进社会的可持续发展。
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引用次数: 1
Modeling the Dynamics of an Agile Scrum Team in the Development of a Single Software Project 在单个软件项目的开发中对敏捷Scrum团队的动态建模
P. M. Ching, J. E. Mutuc
In software development, Agile Scrum is practiced with the intention of increasing the developers’ productivity, and improving the quality of their output [3]. However, difficulties persist which prevent development teams’ from reaping the full benefit of practicing Agile. From a review of case studies of Agile applications,it was observed that developers’ ceased to practice Agile methods in aspects that related to working in teams. In these aspects, they regressed to waterfall methods, in the sense that developers worked in functional silos with little communication as the project progressed. As an attempt to resolve this, the system dynamics framework was applied in analyzing the Agile case studies. This allowed for an assessment of the progression of the problem over time, as an outcome of feedback loops caused by developers reacting to the outcomes of their previous actions. From doing so, the quietly escalating problem of information being withheld between developers in a single project team was understood to be the primary cause of failure. The study concludes by recommending the importance of open communication between developers, and acknowledging work done beyond the team’s plan.
在软件开发中,实践敏捷Scrum的目的是提高开发人员的生产力,并提高其输出的质量[3]。然而,阻碍开发团队获得实践敏捷的全部好处的困难仍然存在。通过对敏捷应用案例研究的回顾,我们发现开发人员在与团队工作相关的方面不再实践敏捷方法。在这些方面,他们回归到瀑布方法,因为随着项目的进展,开发人员在功能筒仓中工作,几乎没有沟通。为了解决这个问题,系统动力学框架被应用于分析敏捷案例研究。这允许对问题的进展进行评估,作为由开发人员对其先前行为的结果作出反应所引起的反馈循环的结果。由于这样做,单个项目团队中开发人员之间隐瞒信息的问题逐渐升级,这被认为是失败的主要原因。该研究的结论是建议开发者之间开放沟通的重要性,并承认超出团队计划的工作。
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引用次数: 5
[Copyright notice] (版权)
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引用次数: 0
A Continuous-Time Unit-Based MILP Formulation for the Resource-Constrained Project Scheduling Problem 基于连续时间单元的资源约束项目调度问题MILP公式
M. Gnägi, Adrian Zimmermann, N. Trautmann
In the basic resource-constrained project scheduling problem RCPSP, one aims at selecting starting times for the tasks of a project such that the project makespan is minimized and the project schedule is precedence- and resource-feasible. There is a considerable body of literature about problem-specific solution methods; recently, mixed-integer linear programming (MILP) formulations for the RCPSP have received increasing attention. We suggest a new MILP formulation that utilizes a set of continuous variables indicating the starting times of the project tasks, and three sets of binary variables indicating the assignment of resource units to the project tasks, the potential overlapping of the project tasks, and the sequencing of the project tasks. In a comparison with ten reference formulations from the literature, it is found that the advantages of this new formulation are its simple structure, enhanced flexibility, and superior or comparable performance, particularly when the range of the tasks’ durations is relatively high.
在基本的资源约束项目调度问题RCPSP中,人们的目标是选择项目任务的开始时间,以使项目最大完工时间最小化,并且项目进度是优先级和资源可行的。关于具体问题的解决方法有相当多的文献;近年来,RCPSP的混合整数线性规划(MILP)得到了越来越多的关注。我们提出了一种新的MILP公式,该公式利用一组连续变量表示项目任务的开始时间,三组二元变量表示项目任务的资源单位分配、项目任务的潜在重叠以及项目任务的顺序。通过与文献中的十种参考配方进行比较,发现该配方的优点是结构简单,灵活性增强,性能优于或与之相当,特别是在任务持续时间范围较大的情况下。
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引用次数: 4
The Influence of IM Use on Job Satisfaction in Cross-organizational Projects 跨组织项目中即时通讯使用对工作满意度的影响
Ziyue Wang, Yali Zhang, Jun Sun, Chrissie Diane Tan, Menghua Lu
Instant messaging (IM) tools have been used by more and more companies for cross–organizational projects. They face two choices: dedicated systems in form of enterprise IM and public platforms like WeChat. This study conducts a comparative analysis of WeChat and enterprise IM. It examines the impact of IM usage on job satisfaction in cross-organizational projects, and uses IM Motivation as a moderator. Research shows that for WeChat, hedonic motivation plays a significant negative moderation role in the impact of instant messaging usage on job satisfaction. For enterprise IM, utilitarian motivation plays a significant positive moderation role in the impact of IM usage on job satisfaction.
即时消息(IM)工具已被越来越多的公司用于跨组织项目。他们面临两种选择:以企业IM形式出现的专用系统和b微信这样的公共平台。本研究对微信和企业IM进行了对比分析。本研究考察了在跨组织项目中使用即时通讯对工作满意度的影响,并使用即时通讯动机作为调节因子。研究表明,对于微信而言,享乐动机在即时通讯使用对工作满意度的影响中起着显著的负向调节作用。在企业即时通讯中,功利动机对即时通讯使用对工作满意度的影响具有显著的正向调节作用。
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引用次数: 1
期刊
2018 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)
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