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2022 IEEE 16th International Scientific Conference on Informatics (Informatics)最新文献

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Analysing the Properties of Hierarchical RBFs for Interpolation 层次rbf插值特性分析
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083417
Alex König
Interpolation methods using radial basis functions (RBF) are used for the creation and reconstruction of elevation and surface models, solving partial differential equations and reconstruction of noisy images. Hierarchical methods of RBF computation (HRBF) analysed in this article are based on the division of the domain of input points into subdomains, for which local interpolating radial functions are computed. These local functions are then combined into one global function interpolating the input points. The difference between HRBF methods lies in their approach to the division of the global domain and the subsequent joining of local functions. This article will focus on the analysis of advantages and disadvantages of HRBF methods, specifically methods using a balanced binary tree based on the kd-tree structure, or a grid to divide the global domain.
利用径向基函数(RBF)插值方法创建和重建高程和地表模型,求解偏微分方程和重建噪声图像。本文分析的RBF计算的分层方法是将输入点的域划分为子域,并对子域计算局部插值径向函数。然后将这些局部函数组合成一个对输入点进行插值的全局函数。HRBF方法的不同之处在于它们对全局域的划分和随后局部函数的连接的方法。本文将重点分析HRBF方法的优缺点,特别是使用基于kd-tree结构的平衡二叉树或网格来划分全局域的方法。
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引用次数: 1
Towards an Ecologically Valid Symbiosis of BCI and Head-mounted VR Displays 走向BCI和头戴式VR显示器的生态有效共生
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083479
R. Rosipal, Š. Korečko, Z. Rost'áková, N. Porubcová, Martin Vankó, B. Sobota
We present and discuss a user-friendly wearable brain-computer interface (BCI) system with a head-mounted virtual reality display (HMD) for motor rehabilitation of post-stroke patients. The described design represents the first building block toward developing a low-power wearable and ecologically valid BCI-HMD system for collaborative neurorehabilitation of motor and cognitive impairments. We discuss the system's main hardware and software components and applied methods leading to extracting and classifying the task-relevant electroencephalo-graphic (EEG) brain waves used to control the HMD virtual reality environment. Pilot results using the system are also described.
我们提出并讨论了一种用户友好的可穿戴脑机接口(BCI)系统,该系统带有头戴式虚拟现实显示器(HMD),用于脑卒中后患者的运动康复。所描述的设计代表了开发低功耗可穿戴和生态有效的BCI-HMD系统的第一个构建块,用于运动和认知障碍的协同神经康复。我们讨论了该系统的主要硬件和软件组件,并应用了用于控制HMD虚拟现实环境的任务相关脑电波的提取和分类方法。并介绍了该系统的试验结果。
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引用次数: 0
Image steganography with using QR code 图像隐写与使用QR码
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083471
Samuel Andrejcík, Ľ. Ovseník, Jakub Oravec, Norbert Zdravecký, Maroš Lapčák
This article deals with digital representation of images as well as presents design and implementation of message security of data represented in images by using the Quick Response (QR) code encryption technique. In the proposed solution, the QR code is written in the least significant bit (LSB). In our presented case the simulations are performed in MATLAB development tool. The results are presented by multiple stego images using multiple cover images and secret messages that are embedded into them. The motivation is ever-increasing demands on the security of hidden data represented in images. The proposed solution is evaluated by parametric values as Peak signal-to-noise ratio (PSNR), mean squared error (MSE) and subsequently compared with well-known proposed solutions. The aim of this article is to design a solution that will come with high level of security and at the same time with lowest possible level of perceptibility. The system can be used to secure data in the medical field, respectively in the protection of copyrighted data.
本文讨论了图像的数字表示,并介绍了使用QR码加密技术对图像中表示的数据进行消息安全的设计和实现。在提出的解决方案中,QR码以最低有效位(LSB)书写。在本案例中,仿真是在MATLAB开发工具中进行的。结果由使用多个封面图像和嵌入其中的秘密信息的多个隐写图像呈现。其动机是对图像中隐藏数据的安全性要求不断提高。通过峰值信噪比(PSNR)、均方误差(MSE)等参数值对所提出的解决方案进行评估,并随后与已知的解决方案进行比较。本文的目的是设计一个解决方案,该解决方案将具有高级别的安全性,同时具有尽可能低的可感知性。该系统可用于医疗领域的数据安全,分别在版权数据的保护方面。
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引用次数: 1
Experimental Simulation of 30×100 Gb/s DWDM Communication System 30×100 Gb/s DWDM通信系统的实验仿真
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083393
Norbert Zdravecký, Ľ. Ovseník, Jakub Oravec, Maroš Lapčák, Samuel Andrejcík
In DWDM systems data signals from different sources can share a single optical fiber while maintaining complete separation of data streams. The basic components of passive optical network (PON) are a light source, most often a laser, a receiver and an optical fiber. Article describes our topology and theory of DWDM system, the phenomena affecting the optical transmission in the 30-channel DWDM system, which was designed in the OptiSystem program. Optimization summarizes the knowledge of the systems and software that is used. The theory of RZ and NRZ modulation is described. Based on previous simulations of DWDM systems with transmission speed of 10 Gb/s and 40 Gb/s, we design a 100 Gb/s scheme, which is described in this article. We evaluate Q factor and BER parameters for these systems with changing RZ and NRZ modulation. Our goal is to improve DWDM transmission properties in our proposed system. We expect better BER parameters when deploying an EDFA amplifier over longer transport distance. An optical network with amplifiers is called an active optical network (AON).
在DWDM系统中,来自不同来源的数据信号可以共享一条光纤,同时保持数据流的完全分离。无源光网络(PON)的基本组成部分是光源(通常是激光器)、接收器和光纤。本文介绍了DWDM系统的拓扑结构和原理,以及在OptiSystem程序中设计的30路DWDM系统中影响光传输的现象。优化总结了所使用的系统和软件的知识。介绍了RZ和NRZ调制的原理。在前人对传输速率分别为10gb /s和40gb /s的DWDM系统进行仿真的基础上,本文设计了一种传输速率为100gb /s的方案。我们评估了这些系统在改变RZ和NRZ调制下的Q因子和BER参数。我们的目标是在我们提出的系统中改善DWDM传输特性。在较长的传输距离上部署EDFA放大器时,我们期望得到更好的误码率参数。带放大器的光网络称为有源光网络(AON)。
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引用次数: 0
Experimental Comparison of Array-based and Linked-based List Implementations 基于数组和基于链表实现的实验比较
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083495
Michal Mrena, Michal Varga, M. Kvassay
Lists are one of the most often used containers in practice. They provide an easy way to store and access elements of arbitrary type. The list is suitable for a wide range of use cases including problems that involve the processing of a considerably high number of elements. Such situations are common in, for example, medical databases or in reliability analysis tools. There exist two principal approaches to the implementation of the list. One is based on the use of an array and the other one on the use of linked nodes. The question of which implementation to use often raises heated debates amongst scholars and programmers. The paper aims to compare the standard implementations in scenarios testing basic list operations. Also, the paper presents how we use similar scenarios to teach computational complexities and data structures comparison within the course of Algorithms and Data Structures at the Faculty of Management Science and Informatics of University of Zilina.
列表是实践中最常用的容器之一。它们提供了一种存储和访问任意类型元素的简便方法。该列表适用于广泛的用例,包括涉及处理大量元素的问题。例如,这种情况在医疗数据库或可靠性分析工具中很常见。执行清单有两种主要方法。一种基于数组的使用,另一种基于链接节点的使用。使用哪种实现的问题经常在学者和程序员之间引起激烈的争论。本文的目的是比较基本列表操作在测试场景中的标准实现。此外,本文还介绍了我们如何在淄博大学管理科学与信息学院的算法与数据结构课程中使用类似的场景来教授计算复杂性和数据结构比较。
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引用次数: 0
Comparison of Single MDD and Series of MDDs in the Representation of Structure Function of Series-Parallel MSS 串并联MSS结构函数表示中单个MDD与串联MDD的比较
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083458
Michal Mrena, M. Kvassay
Series-parallel topology is one of the commonly encountered system topologies of Multi-State Systems (MSSs). We use the structure function which has a form of a Multiple-Valued logic (MVL) function to describe the system. The structure function of complex MSS can be considerably large. Therefore, we use Multi-valued Decision Diagram (MDD) for its representation. A straightforward way to represent the structure function is to use a single MDD. There exists an alternative approach that uses a series of MDDs to represent the structure function. Our present research suggests that the series approach is more efficient in terms of the number of nodes in the MDD when we consider series-parallel systems. The paper deals with a further experimental comparison of the two approaches by examining random initial variable ordering dynamically adjusted using the variable sifting heuristic. Results of the new experiment confirm that given an arbitrary series-parallel topology and arbitrary ordering of variables the approach that uses a series of diagrams is more efficient and never worse considering the number of nodes in the MDD. Furthermore, the new results also show that static ordering of variables by their indices is considerably better than any dynamic ordering in the case of series-parallel systems defined using the process introduced in our previous work.
串并联拓扑是多状态系统(mss)中常见的系统拓扑之一。我们使用具有多值逻辑(MVL)函数形式的结构函数描述系统。复杂MSS的结构函数可以相当大。因此,我们使用多值决策图(MDD)来表示它。表示结构函数的一种直接方法是使用单个MDD。存在一种替代方法,使用一系列mdd来表示结构功能。我们目前的研究表明,当我们考虑串并联系统时,就MDD中的节点数量而言,串联方法更有效。本文通过使用变量筛选启发式方法动态调整随机初始变量排序,对两种方法进行了进一步的实验比较。新实验的结果证实,给定任意串并联拓扑和变量的任意顺序,使用一系列图的方法更有效,而且考虑到MDD中的节点数量,这种方法不会更糟糕。此外,新的结果还表明,在使用我们之前的工作中介绍的过程定义的串并联系统的情况下,通过索引对变量进行静态排序比任何动态排序要好得多。
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引用次数: 0
A System for the Management of Proposal of Assignments of Final Thesis by Microservice 基于微服务的毕业论文作业管理系统
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083456
J. Kostolny, Veronika Salgová
Choosing the topic of the final thesis is a necessary condition for the successful completion of studies at the university. Selecting a suitable topic that interests and entertains the student is more challenging, but it can lead to better results. This work focuses on the modular system's extension with a module for the assignment of final theses. The goal is to bring some form of communication and fine-tune the final thesis proposal before it is posted. At the same time, this system also gives access to companies that can address students in this way. Furthermore, the system is designed in a microservice architecture, which increases the overall system's reliability.
选择毕业论文的主题是成功完成大学学业的必要条件。选择一个学生感兴趣和娱乐的合适话题更具挑战性,但它可以带来更好的结果。这项工作的重点是模块化系统的扩展与模块的最后论文的作业。我们的目标是在发表论文之前进行某种形式的交流和微调。与此同时,该系统也为那些可以以这种方式向学生提供服务的公司提供了机会。此外,系统采用微服务架构设计,提高了系统的整体可靠性。
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引用次数: 0
Design and simulation of a microstrip antenna for the needs of a hybrid FSO/RF system 满足FSO/RF混合系统需求的微带天线的设计与仿真
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083498
Maroš Lapčák, Ľ. Ovseník, Jakub Oravec, Norbert Zdravecký, Samuel Andrejcík
The technology of transmission systems is experiencing a rapid expansion today. The availability of up-to-date information everywhere and always has become feasible through optical fiber used as a transmission medium. Features such as high transmission speed or transmission stability meet the requirements for quality communication. The substitute for optical fiber is propagation in the open environment, realized by means of optical rays. This system is called FSO (Free Space Optics), and its properties are comparable to fiber optic transmission. Its advantage is easy installation even in hard-to-reach areas where physical optical systems would not be as efficient. However, FSO systems are affected by weather conditions, most of all fog, when the connection often fails. Therefore, these situations are solved by using a backup RF (Radio Frequency) line. Such a combined system is called a hybrid FSO/RF system. The work examines the properties of the designed microstrip antennas. Usable in the secondary line of a hybrid FSO/RF system. A basic model of such an antenna was used, from which further experiments were carried out, such as changing the size of the substrate and the guide surface or different cut-outs through the surface of the microstrip antenna. Finally, the changes were investigated even after the use of different materials for the microstrip line and the ground.
今天,传动系统技术正经历着迅速的发展。通过使用光纤作为传输介质,随时随地获取最新信息已成为可能。传输速度快或传输稳定等特点满足了高质量通信的要求。光纤的替代品是在开放环境中传播,通过光线来实现。该系统被称为自由空间光学(FSO),其性能可与光纤传输相媲美。它的优点是易于安装,即使在物理光学系统效率不高的难以到达的地区。然而,FSO系统受到天气条件的影响,尤其是大雾,连接经常会失败。因此,这些情况可以通过使用备用RF(射频)线来解决。这种组合系统称为FSO/RF混合系统。研究了所设计的微带天线的性能。可用于FSO/RF混合系统的二次线路。采用了微带天线的基本模型,在此基础上进行了进一步的实验,如改变衬底和导面尺寸或通过微带天线表面的不同切口。最后,对微带线和地线使用不同材料后的变化进行了研究。
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引用次数: 0
Petri-Net-Driven Educational Scenarios in Web-Based Extended Reality petri - net驱动的基于web的扩展现实教育场景
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083401
Š. Korečko, B. Sobota, M. Mattová, Adam Kašela
Recently, an increasing utilization of extended re-ality for educational purposes can be observed, with various virtual environments supporting learning in multiple areas. For such educational environments, it is important to precisely define scenarios of activities the users are allowed to perform within them. An appropriate way to define the scenarios is by means of a language that is both unambiguous and easy to understand. Here, Petri nets seem to be an appropriate choice thanks to their simple graphical notation and the underlying formalism. In this paper we introduce an approach to integrate scenarios, defined using a class of Petri nets called Place/Transition nets, with educational virtual 3D environments, available online via a web browser. The approach focuses on utilization of freely available software and possibility to create and test the scenarios outside of the environments. A prototype implementation of the approach, which has a form of a historical exposition capturing the Enlightenment era in the Habsburg monarchy, is presented, too.
最近,可以观察到越来越多的扩展现实用于教育目的,各种虚拟环境支持多个领域的学习。对于这样的教育环境,精确定义允许用户在其中执行的活动场景是很重要的。定义场景的适当方法是使用一种既明确又易于理解的语言。在这里,Petri网似乎是一个合适的选择,这要归功于它们简单的图形符号和潜在的形式化。在本文中,我们介绍了一种集成场景的方法,该场景使用一类称为Place/Transition网的Petri网定义,并通过web浏览器在线提供教育虚拟3D环境。该方法侧重于利用免费可用的软件,以及在环境之外创建和测试场景的可能性。本文还介绍了该方法的原型实现,该方法具有捕捉哈布斯堡王朝启蒙时代的历史阐述形式。
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引用次数: 0
Creating Microservices and using infrastructure as code within the CI/CD for dynamic container creation 创建微服务,并在CI/CD中使用基础设施作为代码来创建动态容器
Pub Date : 2022-11-23 DOI: 10.1109/Informatics57926.2022.10083442
Tomáš Golis, Pavle Dakić, V. Vranić
Many current companies tend to use microservice architecture. The reasons are clear: speed, efficiency, flexibility, autonomy, and ease of use. However, to use them effectively, the implementation of containers and clusters requires a well-built infrastructure. This requires a pattern of version development and deployment known as continuous integration/continuous deployment (CI/CD). CI/CD allows organizations to deliver software to production quickly and efficiently, identify defects, and ensure that the code meets best practices. This document will cover the design of custom CI/CD software following best practices for the processes of building, testing, and deploying an application to a server. The purpose of the research is a case study and an understanding of the technologies required to create a complex microservices-based infrastructure.
当前许多公司倾向于使用微服务架构。原因很明显:速度、效率、灵活性、自主性和易用性。然而,要有效地使用它们,容器和集群的实现需要构建良好的基础设施。这需要一种称为持续集成/持续部署(CI/CD)的版本开发和部署模式。CI/CD允许组织快速有效地向产品交付软件,识别缺陷,并确保代码符合最佳实践。本文档将介绍按照构建、测试和将应用程序部署到服务器的过程的最佳实践来设计自定义CI/CD软件。本研究的目的是对创建复杂的基于微服务的基础设施所需的技术进行案例研究和理解。
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引用次数: 1
期刊
2022 IEEE 16th International Scientific Conference on Informatics (Informatics)
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