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

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Eye Gaze Accuracy in the Projection-based Stereoscopic Display as a Function of Number of Fixation, Eye Movement Time, and Parallax 基于投影的立体显示中眼球注视精度与注视次数、眼球运动时间和视差的关系
Y. Prasetyo, R. Widyaningrum, C. Lin
Eye gaze accuracy is one of the most commonly used parameter to evaluate the eye tracker performance. The current study applied stepwise multiple regression to predict the significant predictors for eye gaze accuracy (AC). 7 male and 3 female were recruited to perform multi-directional tapping task in the projection-based stereoscopic display under 3 different levels of parallax and 6 different levels of index of difficulty (ID). Tobii X2 eye tracker was used to measure the selected four eye movement parameters which consist number of fixation (NF), fixation duration (FD), time to first fixation (TFF), and eye movement time (EMT). The results indicated that NF was found to be the best predictor for AC followed by EMT and parallax. The R2 value of 0.247 indicating that the 24.7% of the variability of the data was explained by the model. Practitioner Summary: The result of multiple regression can be a valuable theoretical foundation for evaluating an eye tracker. The results could be very beneficial for human factors engineers and virtual reality developers especially for predicting eye gaze accuracy.
眼球注视精度是评价眼动仪性能最常用的参数之一。本研究采用逐步多元回归方法预测注视精度(AC)的显著预测因子。选取7名男性和3名女性,在3种不同视差水平和6种不同难度指数(ID)下完成投影立体显示中的多向点触任务。采用Tobii X2眼动仪测量选定的4项眼动参数:注视次数(NF)、注视持续时间(FD)、首次注视时间(TFF)和眼动时间(EMT)。结果表明,NF是AC的最佳预测因子,其次是EMT和视差。R2值为0.247,表明24.7%的数据变异性被模型解释。从业者总结:多元回归的结果可以为评估眼动仪提供有价值的理论基础。研究结果对人为因素工程师和虚拟现实开发人员非常有益,特别是在预测眼睛注视精度方面。
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引用次数: 14
External or Internal Cooperation? Patenting Activities and Cooperative Structures in the Chinese ICT Sector 外部合作还是内部合作?中国信息通信技术领域的专利活动和合作结构
Sijia Lu, Suli Zheng, Qian Xu
Despite abundant studies on patent cooperation, few have carefully studied the structure and modes. Taking advantage of the patents granted by the State Intellectual Property Office of the People's Republic of China from 2007 to 2017, this paper revealed the overall situation of patent cooperation, shedding light on the patent cooperation patterns of listed companies. It shows that the size of patent cooperation network in the ICT industry demonstrates a significantly increasing trend, among which, leaders in the industry have formed their own clusters, with the networks having the small-world characteristics. Moreover, four structures of patent cooperation are summarized in the paper: (1) Minimum cooperation;(2) External oriented cooperation;(3) Internal oriented cooperation;(4) Compound cooperation.
尽管对专利合作的研究很多,但对专利合作的结构和模式的研究却很少。本文以2007 - 2017年国家知识产权局授权专利为例,揭示了上市公司专利合作的总体情况,揭示了上市公司专利合作的模式。研究表明,信息通信技术产业专利合作网络规模呈显著增长趋势,其中行业龙头企业形成了自己的集群,网络具有小世界特征。此外,本文还总结了四种专利合作结构:(1)最小合作;(2)外部导向合作;(3)内部导向合作;(4)复合合作。
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引用次数: 0
Application of Lean Manufacturing Techniques in a Peruvian Plastic Company 精益生产技术在秘鲁一家塑料公司的应用
Ivonne Poves-Calderno, J. Ramirez-Mendoza, Victor Nuñez-Ponce, J. Alvarez-Merino
This study analyzes the influence of nonfulfillment of orders in a company that produces plastic sheets. The main cause of problems is the long unproductive times during the extrusion process, which decrease the index of the overall equipment effectiveness (OEE). An innovative proposal is presented to address this issue, involving the use of a systematic approach and combining the SMED and preventive maintenance techniques of the lean manufacturing methodology, with the aim of reducing unproductive times to improve the OEE index. To validate the effectiveness of the proposal, the systems were simulated using Arena simulation software and input analyzer, to determine the reduction of unproductive times. Results show that the proposal reduces the unproductive times bh 36.37% and improves the OEE index by 9.02%. This demonstrates the achievement of the objective of the project, which was to maximize the efficiency of the process and reduce the total time of the extrusion process, which will allow the company to fulfill the orders and avoid profit losses.
本研究分析了某塑胶薄板生产企业订单不履行的影响。造成问题的主要原因是挤压过程中非生产性时间长,降低了设备整体效率(OEE)指标。为了解决这个问题,提出了一个创新的建议,包括使用系统的方法,并将SMED和精益制造方法的预防性维护技术相结合,目的是减少非生产性时间,以提高OEE指数。为了验证该建议的有效性,使用Arena仿真软件和输入分析仪对系统进行了模拟,以确定减少非生产时间。结果表明,该方案可减少36.37%的非生产次数,提高9.02%的综合利用效率。这证明了项目目标的实现,即最大限度地提高工艺效率,减少挤压过程的总时间,这将使公司能够完成订单并避免利润损失。
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引用次数: 5
Digitization of Higher Education Institutions 高等教育机构数字化
A. Telukdarie, M. Munsamy
The fourth industrial revolution, the digitization of industry, is driving business landscape and associated skills development, including tertiary education. Universities and institutions of higher learning have evolved into technological hubs, developing and delivering skills for the future. The operations and systems together with workflows of delivery at a tertiary institution should be modified to deliver services and a product that is 4IR savvy, more importantly, the systems and processes must be 4IR enabled so as to deliver a seamless, efficient, smart digital experience. This paper reviews tertiary institutional operations and provides an architecture to deliver digitization at institutional level. This research adopts a functional and architectural view of the system and systems of systems. A Digital Education Evaluation Model (DEEM) is proposed for evaluation of traditional and digitized practices, for identification of digitized technologies for adoption. The DEEM is demonstrated by comparatively analyzing traditional and virtual classrooms.
第四次工业革命,即工业数字化,正在推动商业格局和相关技能的发展,包括高等教育。大学和高等教育机构已经发展成为技术中心,为未来发展和提供技能。高等教育院校的运作和系统,以及交付的工作流程,都应加以修改,以提供符合第四次工业革命的服务和产品。更重要的是,系统和流程必须启用第四次工业革命,以提供无缝、高效、智能的数码体验。本文回顾了高等教育机构的运作,并提供了一个在机构层面上实现数字化的架构。本研究采用功能和架构的观点来看待系统和系统的系统。提出了一种数字教育评估模型(DEEM),用于评估传统和数字化实践,以确定采用数字化技术。通过对传统课堂和虚拟课堂的对比分析,对该系统进行了论证。
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引用次数: 9
Hierarchical Classification and Regression with Feature Selection 基于特征选择的层次分类与回归
Shih-Wen Ke, Chih-Wei Yeh
Previous studies proposed different hierarchical estimation approaches for solving certain specific domain problems. They usually combine two or more estimation models in a hierarchical fashion. Therefore, in our previous work [2], we proposed a hierarchical approach for generic purposes, the Hierarchical Classification and Regression (HCR), that incorporates classification and estimation techniques. The HCR [2] approach significantly outperformed three benchmark flat estimation models. Having seen the potential of the proposed HCR as a generic hierarchical regression scheme, we propose to further improve the HCR by introducing feature selection (FS) techniques to the HCR. In order to thoroughly investigate the effect of FS on the HCR, we examine different numbers of attributes remained after feature selection with respect to datasets of various sizes. The results showed that the HCR with linear regression performed significantly better than the other HCRs while feature selection helped lower the RMSE slightly with only 50% of the original features.
以往的研究提出了不同的层次估计方法来解决特定的领域问题。它们通常以分层的方式组合两个或更多的估计模型。因此,在我们之前的工作[2]中,我们提出了一种用于通用目的的分层方法,即分层分类和回归(HCR),它结合了分类和估计技术。HCR[2]方法显著优于三个基准平面估计模型。鉴于所提出的HCR作为一种通用的层次回归方案的潜力,我们建议通过在HCR中引入特征选择(FS)技术来进一步改进HCR。为了彻底研究FS对HCR的影响,我们研究了不同大小的数据集在特征选择后保留的不同数量的属性。结果表明,线性回归的HCR表现明显优于其他HCR,而特征选择仅对原始特征的50%略有降低RMSE。
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引用次数: 1
The Interplay Between Knowledge Creation Strategies: The Case of European Information-and-Communications-Technology Firms 知识创造策略之间的相互作用:以欧洲信息和通信技术公司为例
V. Kiisk
This paper explores the interplay between two dimensions of organizational learning - internal knowledge creation and external knowledge sourcing. Based on a sample of European information-and-communications-technology firms, this research demonstrates that there are differences in behavior as well as co-movement between the dimensions. The companies engaged in external learning tend to possess more internal knowledge stock as well as that higher internal knowledge stock triggers more active external learning strategies through business combinations, especially divestments.
本文探讨了组织学习的两个维度——内部知识创造和外部知识采购之间的相互作用。基于欧洲信息和通信技术公司的样本,本研究表明,在行为和协同运动的维度之间存在差异。从事外部学习的企业往往拥有更多的内部知识储备,并且更高的内部知识储备通过企业合并,尤其是剥离,引发更积极的外部学习策略。
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引用次数: 0
Supply Model for Dependent Demand in the Peruvian Textile Industry: A Case Study 秘鲁纺织业依赖需求的供给模型:一个案例研究
Andrea Guevara-Yarasca, Gian Falla-Marcelo, J. Quiroz-Flores, J. Alvarez-Merino
The main purpose of managing a supply chain is to ensure the life cycle of a product or service, from reception of raw materials to final distribution. A key factor in achieving the goals of the organization lies in the timing of its processes, since variations in demand can lead to late deliveries, cancellation of orders, and increased reliance on inventory. Therefore, this paper proposes a model that determines the optimal amount to be produced, taking into account the various stages of the supply chain, many of which have not been considered in original models. This model involves reducing inventory overruns and the opportunity cost of using the Excel spreadsheet.
管理供应链的主要目的是确保产品或服务的生命周期,从原材料的接收到最终的分销。实现组织目标的一个关键因素在于其过程的时间安排,因为需求的变化可能导致延迟交付、取消订单以及增加对库存的依赖。因此,本文提出了一个模型来确定最优产量,考虑到供应链的各个阶段,其中许多阶段在原始模型中没有被考虑。该模型涉及减少库存超支和使用Excel电子表格的机会成本。
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引用次数: 0
Industry Related Requirements for Tools for Planning Energy Efficient Factories 规划节能工厂所需工具的行业相关要求
U. Dombrowski, Christoph Imdahl, Alexander Reiswich
This paper provides an overview of the importance of energy efficiency in companies. It shows that existing methods and tools for optimizing energy efficiency are not sufficient to overcome barriers in the industry to identify and implement energy efficiency measures. Therefore, nine barriers will be identified that are relevant for future energy efficiency optimization tools and compared with existing approaches. Six requirements have been derived from this comparison which will reduce the effect of the barriers in the future. The implementation and integration of these requirements promises a more comprehensive implementation of energy efficiency measures in industry.
本文概述了能源效率在企业中的重要性。它表明,优化能源效率的现有方法和工具不足以克服行业中的障碍,以确定和实施能源效率措施。因此,将确定与未来能源效率优化工具相关的九个障碍,并与现有方法进行比较。从这种比较中得出了六项要求,这将减少今后壁垒的影响。这些要求的实施和整合保证了在工业中更全面地实施能效措施。
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引用次数: 1
Forecasting Lumpy Demand for Planning Inventory: The Case of Community Hospitals in Thailand 预测规划库存的总需求:以泰国社区医院为例
P. Kalaya, P. Termsuksawad, T. Wasusri
The pattern of lumpy demand affects the healthcare industry such as small community hospitals which encounter sporadic demands of slow-moving medicines. The objective of this work aimed to study performance of forecasting methods for inventory planning. This work compared two forecasting methods: Croston(CR) and the Teunter, Syntetos, and Babai's (TSB) methods. Furthermore, this work proposed a combination of Exponential and Poisson distribution and the use of average inter-demand interval combining with average demand to forecast lumpy demand. It assumed that amount of on-hand inventory would be equal to forecasting values. Mean square error (MSE) and number of shortage period were used as performance indicators of these methods. The simulation used 2 types of vital medicines, obtained from the community hospital in Mae Hong Son province from January 2015 to December 2017. The results from CR and TSB methods provided lower MSEs when the smoothing constants were unchanged until 12 weeks. Meanwhile, adjusting the smoothing constants every 4 weeks provided lower shortages. Meanwhile, the other two proposed methods led to lower shortages comparing with those of CR and TSB methods.
集中需求的模式影响了医疗保健行业,如小型社区医院,这些医院遇到了对缓慢流动药物的零星需求。本研究的目的是研究库存规划预测方法的性能。本研究比较了两种预测方法:Croston(CR)和Teunter, Syntetos, and Babai (TSB)方法。在此基础上,本文提出将指数分布与泊松分布相结合,利用平均需求间区间与平均需求相结合的方法来预测块状需求。它假设手头库存的数量等于预测值。以均方误差(MSE)和短缺期数作为这些方法的性能指标。模拟使用了2015年1月至2017年12月从湄宏顺省社区医院获得的两种重要药物。CR和TSB方法的结果显示,当平滑常数不变时,mse较低,直至12周。同时,每4周调整平滑常数可以降低短缺。同时,与CR和TSB方法相比,另外两种方法的不足之处也较小。
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引用次数: 1
In Search of an Optimizer Matrix for Affordance Design 寻找功能设计的优化矩阵
Chien-Sing Lee
Affordance in product, packaging and service design has attracted much attention. Aiming at increasing perceived usefulness and usability, foci has increasingly extended to user experience and interaction. Neuroscience research can also benefit from affordance research, i.e., by designing external task demands to trigger/train functional networks and possibly, to compensate dysfunctional networks. Visual processing influences diverse cognitive processings. Hence, aspects investigated are types of contexts and properties which contribute to visual salience (colour, shape). The aim is to investigate which among these factors can serve as LeCun's common filter to improve search strategies and identification of the region of interest across sample well-defined and ill-defined contexts. Function (goal), structure (associative schema) and behaviour (actionable possibilities) stand out as the meta-heuristics, above shape and colour. A hierarchical optimizer matrix linking affordance design with schematics is then proposed.
产品设计、包装设计、服务设计等方面的可变性受到了广泛关注。为了提高感知的有用性和可用性,焦点越来越多地扩展到用户体验和交互。神经科学研究也可以从供给性研究中受益,即通过设计外部任务需求来触发/训练功能网络,并可能补偿功能失调的网络。视觉加工影响多种认知加工。因此,研究的方面是有助于视觉显著性(颜色,形状)的上下文和属性类型。目的是研究这些因素中的哪一个可以作为LeCun的公共过滤器,以改进搜索策略,并在样本定义良好和定义不清的环境中识别感兴趣的区域。功能(目标)、结构(联想模式)和行为(可操作的可能性)是比形状和颜色更突出的元启发式。然后提出了一种将功能设计与原理图联系起来的分层优化矩阵。
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引用次数: 1
期刊
2019 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)
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