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2020 6th IEEE Congress on Information Science and Technology (CiSt)最新文献

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Measuring Triple Bottom Line benefits in sustainable e-learning: a framework and process 衡量可持续电子学习的三重底线效益:一个框架和过程
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357178
A. Sofiadin
This paper aims to propose a new sustainable e-learning framework to define relevant and meaningful indicators for monitoring and assessing the Triple Bottom Line (TBL) to improve sustainability in e-learning in higher education in Malaysia. A comprehensive literature review approach followed by focus groups and expert interviews highlighted the elements of sustainable e-learning, which benefits the people, economy, and environment. The paper proposed a sustainable e-learning framework that represents meaningful guidance to e-learning stakeholders for sustainable e-learning strategy formalization, goal setting, and TBL reporting. The paper provides a systematic framework for measuring the benefits of e-learning initiatives toward the Triple Bottom Line; people, economy, and environment.
本文旨在提出一个新的可持续电子学习框架,以定义相关和有意义的指标,用于监测和评估三重底线(TBL),以提高马来西亚高等教育电子学习的可持续性。在焦点小组和专家访谈之后,采用了全面的文献综述方法,强调了可持续电子学习的要素,这有利于人民、经济和环境。本文提出了一个可持续电子学习框架,为电子学习利益相关者提供了有意义的指导,以实现可持续电子学习战略的形式化、目标设定和TBL报告。本文提供了一个系统的框架来衡量电子学习计划对三重底线的好处;人,经济,环境。
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引用次数: 0
Corpus and Baseline Model for Domain-Specific Entity Recognition in German 德语特定领域实体识别的语料库和基线模型
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357189
Sunna Torge, Waldemar Hahn, R. Jäkel, W. Nagel
Transfer Learning approaches are a promising means to analyze low-resource domain specific texts. The German SmartData corpus is the first German corpus, annotated with entities from different domains, and thus allows to investigate transfer learning approaches for Named Entity Recognition (NER) on different domains. In order to prepare such investigations, this work includes a thorough analysis of the SmartData corpus, and a revision w.r.t. annotations and the split into training and test data, considering the distribution of document and entity types. Based on that a baseline model for NER using BiLSTM-CRF neural networks including hyperparameter optimization is presented.
迁移学习方法是分析低资源领域特定文本的一种很有前途的方法。德语SmartData语料库是第一个德语语料库,标注了来自不同领域的实体,从而允许在不同领域研究命名实体识别(NER)的迁移学习方法。为了准备这样的调查,这项工作包括对SmartData语料库进行彻底的分析,并考虑到文档和实体类型的分布,对w.r.t.注释进行修订,并将训练数据和测试数据分开。在此基础上,提出了一种包含超参数优化的基于BiLSTM-CRF神经网络的NER基线模型。
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引用次数: 1
Host-Oriented Approach to Cyber Security for the SCADA Systems 面向主机的SCADA系统网络安全方法
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357299
Jae-Myeong Lee, Sugwon Hong
Recent cyberattacks targeting Supervisory Control and Data Acquisition (SCADA)/Industrial Control System(ICS) exploit weaknesses of host system software environment and take over the control of host processes in the host of the station network. We analyze the attack path of these attacks, which features how the attack hijacks the host in the network and compromises the operations of field device controllers. The paper proposes a host-based protection method, which can prevent malware penetration into the process memory by code injection attacks. The method consists of two protection schemes. One is to prevent file-based code injection such as DLL injection. The other is to prevent fileless code injection. The method traces changes in memory regions and determine whether the newly allocated memory is written with malicious codes. For this method, we show how a machine learning method can be adopted.
近年来针对监控与数据采集(SCADA)/工业控制系统(ICS)的网络攻击利用了主机系统软件环境的弱点,接管了车站网络主机进程的控制。我们分析了这些攻击的攻击路径,其特点是攻击如何劫持网络中的主机并危及现场设备控制器的操作。提出了一种基于主机的保护方法,可以防止恶意软件通过代码注入攻击渗透到进程内存中。该方法包括两种保护方案。一是防止基于文件的代码注入,如DLL注入。另一个是防止无文件代码注入。该方法跟踪内存区域中的变化,并确定新分配的内存是否使用恶意代码写入。对于这种方法,我们展示了如何采用机器学习方法。
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引用次数: 2
Applicability of Algorithm Evaluation Metrics for Predictive Maintenance in Production Systems 预测维护算法评价指标在生产系统中的适用性
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357277
Hendrik Engbers, A. Alla, Markus Kreutz, M. Freitag
Algorithm evaluation metrics are used to measure and compare the performance of diagnostic and prognostic algorithms. However, there is no consensus on which of the various metrics are the most suitable for classifiers' performance evaluation. This paper examines the applicability of common evaluation metrics for predictive maintenance applications in production systems. It is intended to clarify (1) which metrics are well suited for this use case, and (2) whether they are sufficient as a sole decision criterion for algorithm selection. Further, (3) the significance of evaluation metrics concerning the practical impact on the production system's performance is investigated. Moreover, we analyze (4) how increasing the production system's complexity affects the correlation between algorithm evaluation metrics and performance. We conducted 960 simulation runs of a flexible flow shop production system to examine the impact of machine breakdowns and different failure distributions with varying confusion matrices. In addition, two different configurations of the production system, which differ in system complexity, were investigated. Eventually, we determined the product-moment correlation coefficient between common evaluation metrics and the production system's performance. The simulation results reveal that metrics that are sensitive to false negative values (FN), like the False Omission Rate (FOR), are very well suited. Nevertheless, a detailed analysis shows that even (FOR) can only provide reliable statements combined with other metrics. We found that as the system becomes more complex, the informative value of the metrics in terms of their impact on the production system's performance decreases. Finally, we propose parameters that could be relevant for developing new metrics considering the current system configuration.
算法评估指标用于衡量和比较诊断和预后算法的性能。然而,对于哪些指标最适合分类器的性能评估,目前还没有达成共识。本文研究了生产系统中预测性维护应用的通用评估度量的适用性。它的目的是澄清(1)哪些指标非常适合这个用例,以及(2)它们是否足以作为算法选择的唯一决策标准。进一步,(3)探讨了评价指标对生产系统绩效的实际影响的重要性。此外,我们分析了(4)增加生产系统的复杂性如何影响算法评估指标与性能之间的相关性。我们对一个灵活的流水车间生产系统进行了960次模拟运行,以检查机器故障和不同混淆矩阵的不同故障分布的影响。此外,还研究了系统复杂性不同的两种不同的生产系统配置。最后,我们确定了常用评价指标与生产系统绩效之间的产品矩相关系数。仿真结果表明,对假负值(FN)敏感的指标,如假遗漏率(FOR),非常适合。然而,详细的分析表明,即使(FOR)也只能提供与其他指标相结合的可靠语句。我们发现,随着系统变得更加复杂,度量的信息价值就其对生产系统性能的影响而言减少了。最后,我们提出了一些参数,这些参数可能与开发考虑当前系统配置的新度量相关。
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引用次数: 1
Infrastructure linking for placement of Charging stations using Monte Carlo simulation 使用蒙特卡罗模拟连接充电站的基础设施
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357172
Muhammad Tayyab, Sebastian Helm, I. Hauer, Julius Brinken, Niels Schmidtke
Germany plans to invest in the charging station's infrastructure to meet the 50,000 charging points by 2022. For a smooth transition from traditional to electrical vehicles, several electric vehicle charging stations must be planned. Rigorous placement of public charging stations may lead to stability problems in the power network grid. This can be avoided by intelligent Electric vehicle charging stations (EVCS) placement with consideration of traffic and grid planning. The stability problems associated with the electric vehicle charging due to high load may be solved by the expensive grid expansion. Another way to handle the situation is to place EVCS by planning algorithms to avoid the grid expansion for the coming years. In this paper, the authors present a new EVCS placement algorithm based on Monte Carlo simulation considering traffic model and grid modeling. The algorithm determines the optimal EVCS connection nodes taking into account different amounts/configurations of EVCS. Furthermore, the electric vehicles charging power of several EVCS has been scheduled optimally for the resulted configuration to reduce power losses. The input for the algorithm, the daily charge requirement, the amount of EVCS, and the number of electric vehicles has been determined by traffic modeling. The methodology has been implemented and tested in a low voltage network based on real data.
德国计划投资充电站的基础设施,到2022年达到5万个充电站。为了从传统汽车顺利过渡到电动汽车,必须规划几个电动汽车充电站。公共充电站的严格布置可能会导致电网的稳定性问题。这可以通过考虑交通和电网规划的智能电动汽车充电站(EVCS)来避免。高负荷充电带来的稳定性问题可以通过昂贵的电网扩建来解决。处理这种情况的另一种方法是通过规划算法来放置EVCS,以避免未来几年的电网扩张。本文提出了一种基于蒙特卡罗仿真的EVCS布局算法,该算法考虑了交通模型和网格建模。该算法考虑EVCS的不同数量/配置,确定最优EVCS连接节点。此外,根据所得到的配置,对多个EVCS的电动汽车充电功率进行了优化调度,以减少功率损失。通过交通建模确定了算法的输入、日充电需求、EVCS的数量和电动汽车的数量。该方法已在实际低压电网中得到了应用和验证。
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引用次数: 3
Utilization of distance education during COVID_19 crisis covid - 19危机期间远程教育的利用
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357233
Ludmila Faltýnková, I. Šimonová, K. Kostolányová
The recent corona crisis situation caused a sudden turnover in the delivery of lessons at all levels of education in the Czech Republic. The well-established face-to-face instruction was unexpectedly replaced by the distance format, generally linked to higher education courses, which are well planned, specially designed, and supported by smart technologies. The main objective of this study is to illustrate this situation from secondary and tertiary school teachers' perspectives. It focuses on the tools of distance education that teachers were able to use after the lockdown from their homes providing only limited technical resources. The study was conducted at Secondary and Tertiary School for medical Staff in Olomouc involving 64 teachers of both general and technical (medical) subjects, who were asked to answer questions regarding technologies and tools used within the distance education. Data obtained from this study revealed that most respondents used predominantly email communication and free online sources.
最近的冠状病毒危机局势导致捷克共和国各级教育课程的交付突然发生变化。传统的面对面教学方式出人意料地被远程教学模式所取代。远程教学模式通常与高等教育课程相关联,这些课程经过精心策划、专门设计,并得到智能技术的支持。本研究的主要目的是从中学和大学教师的角度来说明这一情况。它侧重于教师在封锁后能够在家中使用的远程教育工具,这些工具只提供有限的技术资源。这项研究是在奥洛穆茨的中等和高等医务人员学校进行的,涉及64名普通和技术(医学)科目的教师,他们被要求回答有关远程教育中使用的技术和工具的问题。从这项研究中获得的数据显示,大多数受访者主要使用电子邮件通信和免费的在线资源。
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引用次数: 2
The use of digital teaching resources in the physical sciences and their impact on the secondary school 物理科学中数字教学资源的使用及其对中学的影响
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357182
Abdelhamid Lechhab, Kahlid Ait bentaleb, T. Hassouni, Issam Benqassou, Fouad El-hars, Moulay Mustapha Hafid
The rise of digital culture is accompanied by the institutionalization of the use of information and communication technologies (ICT) in education. In order to assess quantitatively and qualitatively the impact of digital teaching resources on the autonomy of middle and high school students in the physical sciences, we conducted during the 2015–2016 school year a local survey conducted by questionnaires proposed for teachers of physical chemistry disciplines in a few existing the high school in Sidi Slimane (Urban Environment), among a sample of 30 college teachers of physics chemistry, and 100 learners. The questionnaire developed and used as an investigative tool. The results show that about 90% of the teachers surveyed have a personal computer only 67% use the ICT's tools in their teaching practices, the majority of learners use digital resources in the form of social networks and non-academic games outside the classroom (82%), only (13%) whose use digital educational resources outside the classroom.
数字文化的兴起伴随着信息和通信技术(ICT)在教育中的制度化使用。为了定量和定性地评估数字化教学资源对初高中学生物理科学自主性的影响,我们在2015-2016学年对Sidi Slimane(城市环境)的几所现有高中的物理化学学科教师进行了一项本地调查,抽样对象是30名大学物理化学教师和100名学习者。问卷是作为一种调查工具开发和使用的。结果显示,约90%的受访教师拥有个人电脑,只有67%的教师在教学实践中使用ICT的工具,大多数学习者在课堂外使用社交网络和非学术游戏形式的数字资源(82%),只有(13%)的学生在课堂外使用数字教育资源。
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引用次数: 1
Multi-Objective Optimization of the Digestion Tank of an Industrial Phosphoric Acid Manufacturing Process 某工业磷酸生产工艺溶出槽的多目标优化
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357206
I. Bouchkira, A. Latifi, L. Khamar, Saad Benjelloun
This paper deals with multi-objective optimization of the digestion tank of an industrial phosphoric acid manufacturing process. The objective is to determine the optimal set (i.e. Pareto front) of decision variables that maximize the productivity and minimize the chemical losses. The optimization problem is a nonlinear problem involving two conflicting criteria (i.e. phosphate losses and gypsum production) along with equality and inequality constraints. The equality constraints consist of mass and energy balances, electro-neutrality equations, and thermodynamic equilibrium relations, whereas the inequality constraints are mainly given by the excess of sulfuric acid and the upper limit of the operating temperature to improve the performances of the filtration process downstream. The decision variables are defined by the distribution ratios of sulfuric acid over the sections of the tank, and the cooling heat to be removed in order to control the operating temperature within the tank. The Pitzer thermodynamic model was used to predict the two conflicting criteria and the formulated problem is solved by means of epsilon-constraint method. Compared to the real industrial experiments, the resulting optimal values of decision variables show that their implementation would significantly improve the performances of the manufacturing units.
本文研究了某工业磷酸生产工艺溶出槽的多目标优化问题。目标是确定决策变量的最优集合(即帕累托前沿),使生产率最大化并使化学损失最小化。优化问题是一个非线性问题,涉及两个相互冲突的标准(即磷酸盐损失和石膏产量)以及等式和不等式约束。等式约束包括质能平衡、电中性方程和热力学平衡关系,而不等式约束主要由硫酸过量和操作温度上限给出,以提高下游过滤过程的性能。决策变量是由硫酸在罐内各部分的分布比例和为了控制罐内的工作温度而要去除的冷却热量来定义的。采用Pitzer热力学模型对两个相互冲突的判据进行了预测,并采用epsilon-constraint方法对问题进行了求解。与实际工业实验结果相比,所得到的决策变量的最优值表明,这些决策变量的实施将显著提高制造单元的性能。
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引用次数: 3
An Effective Packet Loss Recovery Scheme Using a Cache Server in IPTV Multicast Service 基于缓存服务器的IPTV组播业务丢包恢复方案
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357238
Hyunchul Joo, Intai Kim, Kyungchul Kwak, D. Lee
In this paper, we propose an effective packet loss recovery scheme using a cache server in IPTV (Internet Protocol TeleVision) multicast service. In the proposed scheme, the cache server detects which packets have been lost by using the additional information received from STB (Set-Top Box) device. And then, it retransmits these lost packets to STB device. Test results shows the high recovery success rate of the proposed scheme for packet losses over the commercial IPTV network.
本文提出了一种在IPTV (Internet Protocol TeleVision)多播业务中使用缓存服务器的有效丢包恢复方案。在该方案中,缓存服务器使用从机顶盒设备接收到的附加信息来检测哪些数据包丢失。然后,它将这些丢失的数据包重传到机顶盒设备。测试结果表明,该方案在商业IPTV网络上具有较高的丢包恢复成功率。
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引用次数: 0
Motor Claims Processing: Digital Solutions Review and Assessment 汽车索赔处理:数字解决方案审查和评估
Pub Date : 2020-06-05 DOI: 10.1109/CiSt49399.2021.9357231
Younes Elgargouh, Lamiae Demraoui, R. Chbihi, Hicham Behja, E. Zemmouri
The insurance sector is currently experiencing an increase in competitive pressure due to the multiplication of insurance comparators and the emergence of new competitors with new approaches. GAFA (Google, Apple, Facebook, Amazon), also represent a threat as they will be able to sell ultra-personalized insurance contracts tomorrow, thanks to the analysis of their user's data. At the same time, the insurance sector must adapt to the new behaviors of its customers who have perfectly integrated digital into their daily consumption patterns. This is illustrated by the desire to benefit from a better customer experience through the personalization of offers. It is therefore necessary for insurers to optimize both the quality of their services but also the customer experience and specially the claims side, in fact the client needs the insurance the most when the claim occurs, if he goes through complicated process the probability of changing the insurer gets higher. The claims processing becomes a real growth engine and the digital platforms are one of the best solution to a quick and reliable interaction with customer. This article is a review of existing claims processing digital solutions with a two level comparative study and assessment: functional and technical comparison. These solutions were analyzed to check if they meet business needs and if they are technically updated with new technologies. None of the studied platform manage the end to end claims' process neither performance technological impact.
保险部门目前正面临竞争压力的增加,原因是保险比较机构的增加和采用新方法的新竞争者的出现。GAFA (b谷歌、苹果、Facebook和亚马逊)也构成了威胁,因为他们明天将能够销售超个性化的保险合同,这要归功于他们对用户数据的分析。与此同时,保险行业必须适应客户的新行为,他们已经将数字完美地融入了日常消费模式。通过提供个性化的服务,从更好的客户体验中获益的愿望说明了这一点。因此,保险公司不仅要优化服务质量,还要优化客户体验,特别是理赔方,事实上,客户在理赔发生时最需要保险,如果他经历复杂的过程,更换保险公司的可能性就会更高。索赔处理成为一个真正的增长引擎,数字平台是与客户快速可靠互动的最佳解决方案之一。本文回顾了现有的索赔处理数字解决方案,并进行了两个层面的比较研究和评估:功能和技术比较。对这些解决方案进行分析,以检查它们是否满足业务需求,以及它们是否在技术上使用新技术进行了更新。所研究的平台都没有管理端到端索赔过程,也没有性能技术影响。
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引用次数: 0
期刊
2020 6th IEEE Congress on Information Science and Technology (CiSt)
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