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Concepts of Cyber Security 网络安全概念
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0411
Yordan Shterev
{"title":"Concepts of Cyber Security","authors":"Yordan Shterev","doi":"10.55630/stem.2022.0411","DOIUrl":"https://doi.org/10.55630/stem.2022.0411","url":null,"abstract":"This article summarizes, presents and develops technological concepts of cybersecurity according to the current state of the problem. Based on the OSI model, the main protocols used for it and hardware devices on the one hand, and the main vulnerabilities and threats on the other, the current protections against cyberattacks have been revealed.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117234051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Methods of Nonlinear Dynamics for Heart Rate Variability Analysis 心率变异性分析的非线性动力学方法
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0405
Evgeniya Gospodinova
{"title":"Methods of Nonlinear Dynamics for Heart Rate Variability Analysis","authors":"Evgeniya Gospodinova","doi":"10.55630/stem.2022.0405","DOIUrl":"https://doi.org/10.55630/stem.2022.0405","url":null,"abstract":"The heart rate variability (HRV) analysis, based on the methods of nonlinear dynamics, can provide important information for the physiological interpretation of the functioning of the cardiovascular system and assess the risk of its pathology. The article presents methods for nonlinear analysis of HRV, united in the following groups: fractal, multifractal, graphical and informational. The application of the methods of nonlinear dynamics in the study of the information characteristics of HRV in order to distinguish healthy subjects from sick ones is an important topic from the point of view of the application of the information technologies in the field of non-invasive cardiology. After determining the values of the studied parameters with the developed software and for the distinction of the two studied groups of subjects (healthy controls and patients with arrhythmia) statistical analysis was applied. The statistical analysis was performed by t-test and receiver operating characteristic (ROC) analysis. ROC curves are constructed and the area under the curves is calculated, on the basis of which the quality of the studied methods is evaluated. The results reported in this study may be useful in classifying the states of electrocardiographic signals and serve as a landmark for comparing healthy individuals to individuals with cardiovascular disease. The high information content of the used nonlinear methods for HRV analysis opens perspectives for their future use in the diagnosis and prognosis of cardiovascular diseases.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124388784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Learning Performance Improvement Through Participation in Online Seminar: Machine Learning Analysis 通过参与在线研讨会提高学习绩效:机器学习分析
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0410
M. Ivanova
{"title":"Learning Performance Improvement Through Participation in Online Seminar: Machine Learning Analysis","authors":"M. Ivanova","doi":"10.55630/stem.2022.0410","DOIUrl":"https://doi.org/10.55630/stem.2022.0410","url":null,"abstract":"Learning performance is related to students’ learning activities during a learning process. Their learning behavior could lead to successful course accomplishment or not, to better or worse final marks. Seminar practices have their impact on development of some students’ competences like: topics analysis, discussion and presentation and the planned tasks concern learning performance. In online environment, the seminars could be organized in the form of different learning scenarios and it depends on the functional and technical features of the organized educational environment as well as on the course goal. In this paper an investigation and analysis of students’ participation in online seminars is conducted with aim to understand the dependence between their learning performance, online tasks realization and final results. eLearning informatics gives possibilities for usage contemporary methods for research and learning analytics as one of them is machine learning. Machine learning algorithms are utilized to group students according to their learning behavior and final outcome. The created analytical models could be in support of educators and students to improve their educational activities. The accuracy of machine learning algorithms is evaluated to find the best model according to collected data during one semester.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134109687","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Photopletismographic Signals at Different Sampling Rate 不同采样率下光质体信号的分析
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0408
Krasimir Cheshmedzhiev
{"title":"Analysis of Photopletismographic Signals at Different Sampling Rate","authors":"Krasimir Cheshmedzhiev","doi":"10.55630/stem.2022.0408","DOIUrl":"https://doi.org/10.55630/stem.2022.0408","url":null,"abstract":"Photoplethysmography is a convenient and easy to use method for obtaining information about the human cardiovascular system. It is based on the use of the property of tissues to absorb light passing through or reflected from them. The received analog signal when using this method is converted into digital for further processing. The article presents an experimental system for recording photoplethysmographic signals. The data obtained during the digitization of the analog signal with different sampling rates are shown.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114392296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Analysis of Methods and Approaches for Evaluation of Heart Rate Variability 心率变异性评价方法与途径分析
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0406
Penio Lebamovski
{"title":"Analysis of Methods and Approaches for Evaluation of Heart Rate Variability","authors":"Penio Lebamovski","doi":"10.55630/stem.2022.0406","DOIUrl":"https://doi.org/10.55630/stem.2022.0406","url":null,"abstract":"This article analyses methods and approaches for assessing heart rate variability (HRV). One of the approaches is to study the impact of sports, in particular running athletics on HRV. As a result of the research, it was found that sports increase HRV by increasing the sympathetic share. The HRV method is influenced by various factors: diseases, external factors, physiological and lifestyle factors. Those that influence the athletic achievements of athletes are also considered. The impact of stress on HRV can be studied by creating 3D serious games to simulate various stressful situations and to study their impact on HRV. The article presents virtual reality systems, which are of two types: with immersion and without immersion and their application in the study of HRV. It follows from the analysis that the level of sympathetic tone in the analysis of HRV using virtual reality depends on the degree of immersion. Another approach to assessing HRV is to monitor patients at night to determine parasympathetic tone of the autonomic nervous system. For the accurate analysis of HRV, the mathematical methods used are important, which are mainly divided into linear and nonlinear. Spectral analysis is an example of linear, and Poincarè plot is nonlinear.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114411204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Hazards Analysis of the Oil and Gas Exploration and Production in the Area of the Town of Dolni Dabnik Dolni Dabnik镇地区油气勘探生产危害分析
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0420
Stefan Parvanov, Hristo Prodanov
{"title":"Hazards Analysis of the Oil and Gas Exploration and Production in the Area of the Town of Dolni Dabnik","authors":"Stefan Parvanov, Hristo Prodanov","doi":"10.55630/stem.2022.0420","DOIUrl":"https://doi.org/10.55630/stem.2022.0420","url":null,"abstract":"The paper presents the current state of the hazards of oil and gas exploration and production in the area of Dolni Dabnik, and some problems related to them. Presented are alternatives for improving the safety of oil and gas exploration and production in the area of Dolni Dabnik. Specific measures to ensure the safety of the exploration and production of oil and gas in the area of Dolni Dabnik have been proposed.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"5 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120903006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Establishment of Simulator for Practical Training of Persons Regarding the Correct Actions in Case of Kitchen 建立模拟器，对人员进行正确的厨房操作实践培训
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0414
Svilena Arabadzhieva, Tihomir Abadzhiev
{"title":"Establishment of Simulator for Practical Training of Persons Regarding the Correct Actions in Case of Kitchen","authors":"Svilena Arabadzhieva, Tihomir Abadzhiev","doi":"10.55630/stem.2022.0414","DOIUrl":"https://doi.org/10.55630/stem.2022.0414","url":null,"abstract":"This report discusses the steps to create a kitchen fire simulator. The aim is to create the most simple simulator. Demonstrations for children about the dangers of extinguishing burning fat with water can be made through the simulator. Also, in real conditions, cadets can practice proper actions with fire blankets.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116191324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preprocessing and Mathematical Analysis of PPG Signals PPG信号的预处理与数学分析
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0407
G. Georgieva-Tsaneva
{"title":"Preprocessing and Mathematical Analysis of PPG Signals","authors":"G. Georgieva-Tsaneva","doi":"10.55630/stem.2022.0407","DOIUrl":"https://doi.org/10.55630/stem.2022.0407","url":null,"abstract":"The report presents the main research trends in the preprocessing and mathematical analysis of photoplethysmographic signals. The use of PPG in recent years has grown in parallel with the deepening penetration of modern technology in people's daily lives. At the same time, the modernization of technology has led to the miniaturization of optical sensors. A detailed overview of the state of PPG technology today and the possibilities of using PPG sensors for reporting and long-term monitoring of the health of people in their daily lives is offered. The report considers methods for noise reduction in photoplethysmographic signals based on the use of discrete wavelet transform and threshold processing of the obtained coefficients. A comparison is made between the presented methods on the basis of evaluation parameters.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125453369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Aspects of the Intrinsic Motivation as Accessibility Factors in the Inclusive "STEAM" Education 内在动机在全纳“STEAM”教育中的可及性因素
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0404
M. Dimitrova, Negoslav Sabev, Leire Ozaeta, Valentin Nikolov, A. Krastev
{"title":"Aspects of the Intrinsic Motivation as Accessibility Factors in the Inclusive \"STEAM\" Education","authors":"M. Dimitrova, Negoslav Sabev, Leire Ozaeta, Valentin Nikolov, A. Krastev","doi":"10.55630/stem.2022.0404","DOIUrl":"https://doi.org/10.55630/stem.2022.0404","url":null,"abstract":"The paper presents the current development of the proposed by the authors approach to defining digital and e-learning accessibility for effective pedagogical rehabilitation of learners with special learning needs. A novel aspect – intrinsic accessibility – is proposed as complementary to the previously identified extrinsic aspects of accessibility – institutional, informational and cultural. The intrinsic aspects of accessibility – lack of skills, knowledge, or motivation – influence the process of pedagogical rehabilitation of children with special learning needs. Two different pedagogical scenarios implementing educational robots are discussed in a STEAM context.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116042476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Build Systems for Generating Independent Software 构建生成独立软件的系统
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0409
Maria Pashinska-Gadzheva
{"title":"Build Systems for Generating Independent Software","authors":"Maria Pashinska-Gadzheva","doi":"10.55630/stem.2022.0409","DOIUrl":"https://doi.org/10.55630/stem.2022.0409","url":null,"abstract":"In this paper we present the need for build systems for generating independent software. The main focus of the paper is the CMake build system that is most appropriate for building and managing large scale projects in C/C++. The system allows the development of software independent from the platform. Its main advantages and capabilities are presented in this paper.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132644492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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