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A Study Of The Impact Of Movement Parameters On The Efficiency Of A Direct-Current Motor For A Wheeled Mobile Robot 运动参数对轮式移动机器人直流电机效率影响的研究
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0416
N. Popov, S. Lilov, V. Markova, V. Shopov
{"title":"A Study Of The Impact Of Movement Parameters On The Efficiency Of A Direct-Current Motor For A Wheeled Mobile Robot","authors":"N. Popov, S. Lilov, V. Markova, V. Shopov","doi":"10.55630/stem.2022.0416","DOIUrl":"https://doi.org/10.55630/stem.2022.0416","url":null,"abstract":"The thematic is in the engineering (mechatronics) branch, with application in the mobile robotics. In the article have been examined: the mechanical energy at motion and its corresponding electrical consumption, as they define the energy effectiveness for the mechatronics system of a vehicle. There have been analysed dependencies, defined by the physics, in order to find out the demands, imposed on the construction \"battery, electrical motor, gearing and drive wheels\". The goal criterion is the achieved mileage with a single battery charge, which is determined by the dependencies \"electrical consumption versus torque versus speed\" at any actual motor type. The robot's dynamics parameters (weight, friction at movement, terrain slope, maximal speed and acceleration) appear as input data. Combinations between model parameters have been made, in order to be determined the optimal energy indicators as well as to choose the appropriate direct- current motor. This research uses a relatively small set of empirical physics coefficients and it can be used as an effortless methodology in some lecture notes on the mechatronics of a small wheeled mobile robot.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"117 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":"127295587","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
Day-ahead Electricity Price Forecasting using Long-short Term Memory Recurrent Neural Network 基于长短期记忆递归神经网络的日前电价预测
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0417
Ekaterina Popovska, G. Georgieva-Tsaneva
{"title":"Day-ahead Electricity Price Forecasting using Long-short Term Memory Recurrent Neural Network","authors":"Ekaterina Popovska, G. Georgieva-Tsaneva","doi":"10.55630/stem.2022.0417","DOIUrl":"https://doi.org/10.55630/stem.2022.0417","url":null,"abstract":"The availability of accurate day-ahead electricity price forecasts is very important for electricity market participants and it is an essential challenge to accurately forecast the electricity price. Therefore, this study proposes an efficient method suitable for electricity price forecasting (EPF) and processing time-series data from the Bulgarian day-ahead market based on a long-short term memory (LSTM) recurrent neural network model. The LSTM model is used to forecast the day-ahead electricity price for the Bulgarian day-ahead market. As inputs to the model are used historical hourly prices for the period between 20.01.2016 and 05.03.2022. The output is the electricity price forecasts for hours and days ahead. The future values of prices are forecasted recursively. LSTM can model temporal dependencies in larger Time Series set horizons without forgetting the short-term patterns. LSTM networks are composed of units that are called LSTM memory cells and these cells contain some gates that process the inputs. Since electricity price is affected by various seasonal effects, the model is trained for several years. The effectiveness of the proposed method is verified using real market data.","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":"117130072","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
Achievement оf Physical аnd Transport Accessibility: Presupposition оr Alternative оf Digital Accessibility 成就，物理和交通可达性:预设，可选，数字可达性
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0422
G. Bogdanova, Liana Galabova
{"title":"Achievement оf Physical аnd Transport Accessibility: Presupposition оr Alternative оf Digital Accessibility","authors":"G. Bogdanova, Liana Galabova","doi":"10.55630/stem.2022.0422","DOIUrl":"https://doi.org/10.55630/stem.2022.0422","url":null,"abstract":"This paper discusses the way physical and transport accessibility provide model or alternative to achievement of digital accessibility as contemporary social goal. Based on direct observation of actual accessibility in variety of public spaces, belonging to different social sectors, as well as to their virtual representation, we argue that digital access is rather a continuation, than only the other way round, when a space, event, or project are not organized in regard of recent global accessibility standards. And this study explores local reality of accessibility that we work on in an interdisciplinary team, which we perceive as dynamic and improving sphere of values and innovation – not as a reflection of recent economic situation of our country, and in the world dominated by care of specific epidemic and healthcare accessibility only.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"1 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":"129808880","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
Professional Burnout and Its Effect on the Work of Teachers 职业倦怠及其对教师工作的影响
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0421
Yavor Iliev
{"title":"Professional Burnout and Its Effect on the Work of Teachers","authors":"Yavor Iliev","doi":"10.55630/stem.2022.0421","DOIUrl":"https://doi.org/10.55630/stem.2022.0421","url":null,"abstract":"This article discusses the phenomenon of burnout and its impact on teachers and their work. Although burnout has been increasingly receiving more attention in the scientific field, it is a matter of great importance to many different professions. It is a well-known fact that burnout is strongly present in a profession of high societal importance, such as teaching. For this reason, burnout among school teachers is a relevant problem and is taking an important place in scientific research regarding the efficacy of teachers' work. The main effects of professional burnout on the psychological well-being of teachers have also been outlined in this article.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"67 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":"126301302","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
ARIMA Model for Day-Ahead Electricity Market Price Forecasting 日前电力市场价格预测的ARIMA模型
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0418
Ekaterina Popovska, G. Georgieva-Tsaneva
{"title":"ARIMA Model for Day-Ahead Electricity Market Price Forecasting","authors":"Ekaterina Popovska, G. Georgieva-Tsaneva","doi":"10.55630/stem.2022.0418","DOIUrl":"https://doi.org/10.55630/stem.2022.0418","url":null,"abstract":"Electricity price forecasting becomes a significant challenge on a day-to-day basis and price variations are even more volatile on an hourly basis. Therefore, this paper is used several approaches to analyze the Bulgarian hourly electricity price dynamics in the day-ahead market. Proper analysis crucially depends on the choice of an adequate model. Reviewed are the factors which may influence the electricity spot prices and characteristics of the time series of prices. Methods include and variety of modeling approaches that are applied and evaluated for forecasting electricity prices such as time-series models and regression models. The forecasting technique is to model day-ahead spot prices using well known ARIMA/SARIMA model including stationarity checks, seasonal decompose, differencing, autoregressive modeling, and autocorrelation to analyze and forecast time series hourly data. For each approach, model estimates and forecasts are developed using hourly price data, reshaped, and aggregated data on a daily and monthly basis for the Bulgarian day-ahead market.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"25 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":"131995187","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
Basic Guidelines in the Study of Car Indicators in the Study of the Discipline of Automotive Engineering 《汽车工程学科研究中汽车指标研究的基本准则》
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0413
Raycho Minchev
{"title":"Basic Guidelines in the Study of Car Indicators in the Study of the Discipline of Automotive Engineering","authors":"Raycho Minchev","doi":"10.55630/stem.2022.0413","DOIUrl":"https://doi.org/10.55630/stem.2022.0413","url":null,"abstract":"The intensive development of automotive technology over the last century has significantly expanded the possibilities for modeling and researching the behavior of the car and its systems. As part of this development, the issue of obtaining accurate analytical expressions and estimates of parameters of a highly statistical nature was raised, in part the main points in their calculations. Because the evaluation of the car is most often performed by applying comparative methods, the essence of which is to determine the value of the object on the basis of data on similar parameters and characteristics. The exhibition discusses the theoretical foundations in the field of dynamic calculation of the car, as well as basic guidelines and sequence of actions used in training.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"41 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":"132189562","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
The Importance of Ethics in Socio-Educational Robotics 伦理在社会教育机器人中的重要性
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0402
Itsaso Arocena, Esther Cruz-Iglesias, Itziar Rekalde-Rodríguez
{"title":"The Importance of Ethics in Socio-Educational Robotics","authors":"Itsaso Arocena, Esther Cruz-Iglesias, Itziar Rekalde-Rodríguez","doi":"10.55630/stem.2022.0402","DOIUrl":"https://doi.org/10.55630/stem.2022.0402","url":null,"abstract":"Socio-educational robotics can be defined as investigating teaching-learning processes involving robots capable of bonding, learning and communicating. These robots are used as a didactic tool for their ability to interact with people, and they are designed to meet their objectives and benefit the human beings involved in the process. Therefore, it is essential to recognize the social and educational purpose of the intervention itself that will be carried out with them. However, the deontological code of the pedagogy profession does not include social robotics since it is a relatively new phenomenon in education. All the didactic interventions using robots must be designed to be compatible with the ideals of human dignity, rights, freedoms and cultural diversity.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"43 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":"132998896","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
Modeling the Stability of Wheeled Mobile Robots by Roll and Pich 轮式移动机器人的滚动和俯仰稳定性建模
Innovative STEM Education Pub Date : 2022-06-10 DOI: 10.55630/stem.2022.0415
S. Lilov, V. Markova, V. Shopov, N. Popov
{"title":"Modeling the Stability of Wheeled Mobile Robots by Roll and Pich","authors":"S. Lilov, V. Markova, V. Shopov, N. Popov","doi":"10.55630/stem.2022.0415","DOIUrl":"https://doi.org/10.55630/stem.2022.0415","url":null,"abstract":"This article discusses the stability of wheeled mobile robots on roll and pitch, depending on their geometric proportions, as well as the forces acting on them. A dynamic model of this type of robot is built, based on the principles of kinetostatic. The influence of the parameters of the model on the roll and pitch stability has been studied. Coefficients of stability have been introduced. The dynamic model is built in such a way that it is possible to determine intervals with values of the parameters at which roll and pitch stability is guaranteed.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"51 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":"133763292","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
Utilizing AVX Instruction Set for Optimizing Algorithms for Weight Characteristics of Binary Linear Code 利用AVX指令集优化二元线性码权特性算法
Innovative STEM Education Pub Date : 2021-06-29 DOI: 10.55630/stem.2021.0318
Maria Pashinska, I. Bouyukliev
{"title":"Utilizing AVX Instruction Set for Optimizing Algorithms for Weight Characteristics of Binary Linear Code","authors":"Maria Pashinska, I. Bouyukliev","doi":"10.55630/stem.2021.0318","DOIUrl":"https://doi.org/10.55630/stem.2021.0318","url":null,"abstract":"We present methods of using Advanced Vector Extensions (AVX, AVX2, AVX512) for calculation of weight characteristics of binary linear codes. Some experimental results for different lengths and dimensions are presented.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126098763","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
Cardiological Data Analysis Algorithms Based on Wavelet Theory 基于小波理论的心脏病数据分析算法
Innovative STEM Education Pub Date : 2021-06-29 DOI: 10.55630/stem.2021.0303
G. Georgieva-Tsaneva
{"title":"Cardiological Data Analysis Algorithms Based on Wavelet Theory","authors":"G. Georgieva-Tsaneva","doi":"10.55630/stem.2021.0303","DOIUrl":"https://doi.org/10.55630/stem.2021.0303","url":null,"abstract":"The report presents tools for analyzing cardiac data using various wavelet transforms. Algorithms for the analysis of heart rate variability, which is a dynamic, non-stationary variable, are presented. Heart rate analysis with mathematically based methods is a topical issue. Electrocardiography and long-term Holter recordings have established themselves as non-invasive medical methods for assessing cardiovascular activity. In the time domain parameters established in practice are determined. Spectral analysis of heart rate variability makes it possible to assess the work of the heart and to assess its condition in the coming days. Spectral analysis is usually performed in three frequency bands and can be done by different mathematical methods. The analyzes were performed on real long-term Holter records for patients with proven heart disease diagnosed by a cardiologist and for people without cardiovascular problems. The presented numerical and graphical results were obtained with the help of the MATLAB software program. Comparative analyzes show differences in the studied frequency parameters between patients with heart disease and healthy individuals. The research performed and the results obtained can be useful in the clinical practice of cardiologists.","PeriodicalId":183669,"journal":{"name":"Innovative STEM Education","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116622093","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
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