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An Intelligent Microprocessor Integrating TinyML in Smart Hotels for Rapid Accident Prevention 集成TinyML的智能微处理器在智能酒店中的快速事故预防
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932982
Angelos Zacharia, Dimitris Zacharia, Aristeidis Karras, Christos N. Karras, I. Giannoukou, K. Giotopoulos, S. Sioutas
In the modern era of Internet of Things (IoT) and Industry 4.0 there is a growing need for intelligent microcontrollers that can collect, sense and analyse data effectively and efficiently. Such devices can be installed in large scale IoT deployments ranging from smart homes to smart cities and smart buildings. The aim of these devices shall be not only data monitoring but at the same time energy saving and overall building management. In the context of this paper, an all-in-one microprocessor is presented, namely ZAC888DP, which can sense data from multivariate sources and perform data analytics on top of the collected data. Moreover, machine learning (ML) models are deployed in the embedded memory of the device and specifically TinyML methods using a tflite file. The aim of the developed ML model is to collect data from four heterogeneous sources (water sensor, light sensor, humidity and temperature) in order to identify and forecast possible lavatory accidents. The experimental results of this work are encouraging as the model managed to achieve 100 percentage accuracy after 256 iterations. Future directions include the integration of the device with a neural network that will be trained on top of the pre-trained model in order to increase the overall precision even further.
在物联网(IoT)和工业4.0的现代时代,对能够有效和高效地收集,感知和分析数据的智能微控制器的需求日益增长。这些设备可以安装在从智能家居到智能城市和智能建筑的大规模物联网部署中。这些设备的目的不仅是数据监控,同时还要节能和整体建筑管理。在本文的背景下,提出了一种能够感知多源数据并对采集到的数据进行分析的一体化微处理器ZAC888DP。此外,机器学习(ML)模型部署在设备的嵌入式内存中,特别是使用tflite文件的TinyML方法。开发的ML模型的目的是从四个不同的来源(水传感器、光传感器、湿度和温度)收集数据,以识别和预测可能的厕所事故。这项工作的实验结果令人鼓舞,因为该模型在256次迭代后达到了100%的准确率。未来的方向包括将设备与神经网络集成,该神经网络将在预训练模型的基础上进行训练,以进一步提高整体精度。
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引用次数: 4
Social Media and Consumer Behaviour: Exploratory Factor Analysis 社交媒体与消费者行为:探索性因素分析
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932979
D. Amanatidis, I. Mylona, Michael F. Dossis
In the paper, we consider the general attitude towards and degree of engagement of users with social media and make an effort to explore whether their personal behaviour and points of view affect their online practices as well. Data that were collected with a questionnaire are structured in a dataset which undergoes the process of factor analysis. The objective of the analysis is, apart from dimensionality reduction, to understand what are the main constructs that influence users in their online consumer behaviour. We identify three such factors having significant impact on their buying practices. The model derived can be of particular value to e.g., marketing executives in their product and services promotion strategies.
在本文中,我们考虑了用户对社交媒体的总体态度和参与程度,并努力探索他们的个人行为和观点是否也会影响他们的在线实践。用问卷收集的数据在一个数据集中被结构化,该数据集经过因素分析的过程。除了降维之外,分析的目的是了解影响用户在线消费行为的主要结构是什么。我们确定了三个对他们的购买行为有重大影响的因素。所得的模型对营销主管的产品和服务推广策略等具有特殊价值。
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引用次数: 0
Environmental Awareness in Preschool Education via Educational Robotics and STEAM Education 教育机器人和STEAM教育在学前教育中的环境意识
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932911
Zoe Christidi, E. Christopoulou
Nowadays there is a strong interest in the educational community and society in innovative technologies and more specifically on STEAM (Science, Technology, Engineering, Art and Mathematics) education and robotics. Via STEAM education and educational robotics the learning process and the development of students’ skills can undoubtedly be supported and developed. Additionally, students advance problem-solving and 21st century skills, like critical thinking, creativity and communication. The main aim of our research is to raise the environmental awareness of kindergarten students who were involved in educational robotics and STEAM education activities. This research study was completed as part of a real process, where our students, aged 4 to 6 years old, participated in eight educational activities focusing on water pollution and utilizing the programmable Blue Bot robot. Our research revealed that young students developed and acquired knowledge of programming and algorithmic thinking in a playful way through the use of the educational robot and managed to develop their cognitive and communication skills.
如今,教育界和社会对创新技术有着浓厚的兴趣,更具体地说是STEAM(科学、技术、工程、艺术和数学)教育和机器人技术。通过STEAM教育和教育机器人,学生的学习过程和技能发展无疑可以得到支持和发展。此外,学生还能提高解决问题的能力和21世纪的技能,比如批判性思维、创造力和沟通能力。我们研究的主要目的是提高参与教育机器人和STEAM教育活动的幼儿园学生的环保意识。这项研究是作为一个真实过程的一部分完成的,我们的学生,4到6岁,参加了八个教育活动,重点是水污染和使用可编程的蓝色机器人。我们的研究表明,通过使用教育机器人,年轻学生以一种有趣的方式发展和获得编程和算法思维知识,并设法发展他们的认知和沟通技能。
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引用次数: 0
A bi-directional shortest path calculation speed up technique for RDBMS RDBMS中双向最短路径计算加速技术
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932973
Kyriakos Koritsoglou, Petros Laskas, V. Patras, A. Boursianis, Konstantinos Grigoriadis, I. Fudos
In Relational Database Management Systems (RDBMS) the representation and storage of graph datasets is achieved by using two data tables. One representing the nodes’ data and another for the edges’ data of the graph. Using this model every search process in a big data volume requires multiple joins of large data tables, which significantly reduces their performance. The increasing use of graph datasets in various computer science fields such as (big data, social and computer networks, networks, Semantic Web, knowledge graphs, biological networks, and road networks) creates the need to research methods that will improve the performance of RDBMS when managing this type of data. In this paper, unlike most of the solutions proposed in the literature to date, a purely relational approach is presented using only the native RDBMS query analyzer and not either aggregate functions not implemented in all RDBMSs or an additional plugin layer that analyzes and processes the graph queries in order to translate them into the corresponding SQL versions. With the proposed solution we proved that by designing a bi-directional BFS algorithm that passes through properly selected intermediate pivot points, it is possible to query graph datasets significantly larger than those a complex SQL query can handle, with no major overhead.
在关系数据库管理系统(RDBMS)中,图形数据集的表示和存储是通过使用两个数据表实现的。一个表示节点数据,另一个表示图的边数据。使用该模型,大数据量中的每个搜索过程都需要对大型数据表进行多次连接,这大大降低了它们的性能。图数据集在各种计算机科学领域的使用越来越多,如(大数据、社会和计算机网络、网络、语义网、知识图、生物网络和道路网络),这就需要研究方法来提高RDBMS在管理这类数据时的性能。在本文中,与迄今为止文献中提出的大多数解决方案不同,纯关系方法仅使用本机RDBMS查询分析器,而不是在所有RDBMS中实现的聚合函数,也不是用于分析和处理图查询以将其转换为相应SQL版本的附加插件层。通过提出的解决方案,我们证明了通过设计一个经过适当选择的中间枢轴点的双向BFS算法,可以查询比复杂SQL查询所能处理的大得多的图数据集,而不会产生大的开销。
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引用次数: 0
Magnetic harvester for autonomous steel health monitoring sensors 用于自主钢健康监测传感器的磁性收割机
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9933000
Polychronis Pattakos, Angelos Katsoulas, S. Angelopoulos, A. Ktena, E. Hristoforou
In our days, the new specifications and standards produced by the Internet of Things makes it necessary for the ever-existing need for control over the quality of resources like metals to be reexamined. Nondestructive testing of metal components in machines, tools and construction materials is still considered the most effective method of controlling the quality of metals during production and maintenance, but a more automated and autonomous process of data collection can go a long way with the efficiency of industrial applications. In this paper, an energy harvester is used as a power supply for a steel health monitoring sensor. The paper follows the redesigning of an existing magnetic permeability sensor and the application of the energy harvester in order to achieve autonomous operation, which also includes data monitoring and transmission, thus making the system an Internet of Things compatible device.
在我们这个时代,物联网产生的新规范和标准使得有必要重新审视对金属等资源质量控制的一直存在的需求。对机器、工具和建筑材料中的金属部件进行无损检测仍然被认为是在生产和维护过程中控制金属质量的最有效方法,但是更加自动化和自主的数据收集过程可以随着工业应用的效率而走很长的路。本文采用能量采集器作为钢材健康监测传感器的电源。本文通过对现有磁导率传感器的重新设计和能量采集器的应用,实现自主运行,包括数据监控和传输,使系统成为物联网兼容设备。
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引用次数: 0
Efficiency of SuperCap storage in energy harvesting micropower supplies 能量收集微电源中SuperCap存储的效率
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932904
Ioannis Masklavanos, Christos Koutsos, G. Doumenis
Energy accumulators are useful storage components in energy scavenging IoT devices. In cases of intermittent energy scavenging, electrical energy is stored in such components for later use. Most used energy accumulators are batteries and supercapacitors. EDLC supercapacitors store less energy than lithium-based batteries, but their charge/discharge limit reaches up to half a million cycles. However, due to self-leakage currents, the usable energy stored in an EDLC is difficult to estimate and varies with time. In this paper, we provide practical observations concerning the efficiency of such devices in IoT systems with energy scavenging and provide energy capacity estimations vs baseline energy storage calculations.
能量蓄能器是能量清除物联网设备中有用的存储组件。在间歇性能量清除的情况下,电能被储存在这些组件中供以后使用。最常用的蓄能器是电池和超级电容器。EDLC超级电容器比锂基电池存储的能量少,但它们的充放电限制达到50万次循环。然而,由于自漏电流的存在,EDLC中存储的可用能量难以估计,且随时间而变化。在本文中,我们提供了关于具有能量清除的物联网系统中此类设备效率的实际观察,并提供了能量容量估计与基线能量存储计算。
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引用次数: 0
Retradeables: the first online marketplace for used F-gases in Europe 可回收物:欧洲首个二手含氟气体在线交易市场
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932956
Nikolaos Barmparitsas, Alice Baronchelli, S. Karellas, P. Pallis, S. Thanopoulos
Retradeables is intended to be the first European marketplace for used F-gases to support the circular economy of refrigerants extracted from HVAC-R equipment. In line with all relevant EU policies such as the F-gas Regulation, the Green Deal and the Waste Framework, Retradeables promotes the maximization of the quantities of recovered F-gases that are reused in the market by identifying the most suitable treatment method to be applied (recycling, reclamation or appropriate destruction) depending on their original quality grade (A/B/C). Currently, the Retradeables marketplace has been rolled-out in 3 EU countries: Slovakia (SK), Hungary (HU) and Czech Republic (CZ) with a view to scaling up across Europe in the next few years. Therefore, the aim of this paper is to present the key functionalities of the marketplace platform, including the user registration process under internal and Know-Your-Customer (KYC) verification schemes, the individual trading activities of sellers (supply side) & buyers (demand side) within the platform, the use of wallets and the available payment service based on the Single Euro Payments Area (SEPA) network. At the same time, the full transparency about acting parties, refrigerant volumes & types and running prices as well as full traceability of all refrigerants on sale are both highlighted as the two key design parameters on which Retradeables is structured. Finally, it should be noted that Retradeables is now considered as a beta platform since continuous upgrades are made according to the various requirements and customizations indicated by local users.
Retradeables旨在成为欧洲第一个二手f -气体市场,以支持从HVAC-R设备中提取的制冷剂的循环经济。根据所有相关的欧盟政策,如含氟气体法规、绿色协议和废物框架,Retradeables通过确定最合适的处理方法(回收、回收或适当的破坏),根据其原始质量等级(A/B/C),促进了在市场上重复使用的回收含氟气体的数量最大化。目前,可再生能源市场已在三个欧盟国家推出:斯洛伐克(SK)、匈牙利(HU)和捷克共和国(CZ),以期在未来几年内扩大到整个欧洲。因此,本文的目的是介绍市场平台的关键功能,包括内部和了解您的客户(KYC)验证方案下的用户注册过程,平台内卖家(供应方)和买家(需求方)的个人交易活动,钱包的使用以及基于单一欧元支付区(SEPA)网络的可用支付服务。与此同时,代理方、制冷剂数量和类型、运行价格的完全透明以及所有销售制冷剂的完全可追溯性都被强调为可再交易系统的两个关键设计参数。最后,应该指出的是,Retradeables现在被认为是一个测试版平台,因为它会根据本地用户的各种需求和定制进行持续升级。
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引用次数: 0
Sampling Points Selection Algorithm For Advanced Photolithography Process 高级光刻工艺的采样点选择算法
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9932920
Aris Magklaras, Christos G Gogos, Panagiotis Alefragis, Christos Valouxis, A. Birbas
Photolithography process is one of the most critical in the semiconductor industry since it drives the Moore’s law and the advances in microelectronics in general. Hard constraints on precision, throughput and image quality require software control algorithms and high precision measurements. In such strict environment and requirements, where quality and performance goals need to be met, the optimal design of the measurements is more than necessary. In this paper we propose an Optimal Design of Experiments Algorithm that will enable the process to be able to obtain G-optimal result in a highly competitive time fraction that will ensure at the same time the throughput optimality of the photolithography machines.
光刻工艺是半导体工业中最关键的工艺之一,因为它推动了摩尔定律和微电子技术的发展。对精度、吞吐量和图像质量的硬约束要求软件控制算法和高精度测量。在这样严格的环境和需求中,需要满足质量和性能目标,测量的最佳设计是非常必要的。在本文中,我们提出了一种实验优化设计算法,该算法将使该过程能够在高度竞争的时间分数内获得g -最优结果,同时确保光刻机的吞吐量最优。
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引用次数: 0
Global Graph Clustering and Local Graph Exploration for Community Detection in Twitter 面向Twitter社区检测的全局图聚类和局部图探索
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9933012
Christos N. Karras, Aristeidis Karras, I. Giannoukou, K. Giotopoulos, D. Tsolis, S. Sioutas
In this paper, the concepts and techniques for global graph clustering are examined, or the process of locating related clusters of vertices within a graph. We introduce the construction of a graph clustering technique based on an eigenvector embedding and a local graph clustering method based on stochastic exploration of the graph. Then, the developed implementations of both methods are presented and assessed in terms of performance. In addition, the difficulties associated with assessing clusterings and benchmarking cluster algorithms are explored where PageRank and EigEmbed algorithms are utilized. The experiments show that the EigEmbed outperformed PageRank across all experiments as it detected more communities with the same number of clusters. Ultimately, we apply both algorithms to a real-world graph representing Twitter network and the followers and tweets therein.
本文研究了全局图聚类的概念和技术,即在图中定位相关顶点聚类的过程。介绍了一种基于特征向量嵌入的图聚类技术和一种基于图随机探索的局部图聚类方法。然后,介绍了这两种方法的开发实现,并从性能方面进行了评估。此外,在使用PageRank和EigEmbed算法的情况下,探讨了与评估聚类和对聚类算法进行基准测试相关的困难。实验表明,EigEmbed在所有实验中都优于PageRank,因为它用相同数量的集群检测到更多的社区。最后,我们将这两种算法应用于表示Twitter网络及其追随者和其中的tweet的现实世界图。
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引用次数: 0
Participatory, location-based systems in community place-making. 参与式、基于位置的社区场所制定系统。
Pub Date : 2022-09-23 DOI: 10.1109/SEEDA-CECNSM57760.2022.9933009
Alexandra Tzanidou, Vasilis Vlachokyriakos
The last few years there has been a proliferation of location-based systems beyond the commonplace use of digital maps for navigation. Such uses range from Geographic Information Systems (GIS) for neighbourhood planning, to mapping selforganised civic initiatives and location-based Facebook events. Responding to such developments, the HCI community and research has been active in exploring the potential of such systems for a more meaningful participation of citizens in place-making. Building on such research, this paper explores the design of GIS to support location-based civic participation through undertaking expert interviews, local community workshops and deploying a bespoke GIS system in the context of Athens, Greece. In our findings, we highlight the diversity of opinions and needs of different stakeholders in such technology-enabled and location-based projects.
在过去的几年里,除了常用的数字地图导航之外,基于位置的系统已经大量出现。这些用途包括用于社区规划的地理信息系统(GIS),映射自组织的公民倡议和基于位置的Facebook活动。为了应对这些发展,HCI社区和研究部门一直在积极探索这种系统的潜力,使公民更有意义地参与地方制定。在这些研究的基础上,本文探讨了地理信息系统的设计,通过进行专家访谈、当地社区研讨会和在希腊雅典的背景下部署定制的地理信息系统来支持基于位置的公民参与。在我们的研究结果中,我们强调了不同利益相关者在此类技术支持和基于位置的项目中的意见和需求的多样性。
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引用次数: 0
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