Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017260
L. Docheva, I. Dochev, StoychoVelizarov Manev, Ludvig Lubih
The various software availability for deep neural network implementation enables students easy and accessible implementation of different tasks in a wide area range. The ready for use applications using, for many of the deep neural network training stages is not related to a deeper understanding of the deep neural network theory. For this reason, the authors of this paper have developed an exercise with students' participation as many of the stages of the deep neural network training as possible. This paper presents one solution for laboratory exercise process organization in distance learning in deep neural network area. Each stage of the student's work is examined in detail. The specifics of its distance learning implementation are also discussed.
{"title":"The Process of Teaching Students in the Deep Neural Network Laboratory Work","authors":"L. Docheva, I. Dochev, StoychoVelizarov Manev, Ludvig Lubih","doi":"10.1109/TELECOM56127.2022.10017260","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017260","url":null,"abstract":"The various software availability for deep neural network implementation enables students easy and accessible implementation of different tasks in a wide area range. The ready for use applications using, for many of the deep neural network training stages is not related to a deeper understanding of the deep neural network theory. For this reason, the authors of this paper have developed an exercise with students' participation as many of the stages of the deep neural network training as possible. This paper presents one solution for laboratory exercise process organization in distance learning in deep neural network area. Each stage of the student's work is examined in detail. The specifics of its distance learning implementation are also discussed.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130343119","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017327
K. Dimitrov, Tsvetan Valkovski, I. Damyanov, Gerogi Mladenov
The problem of transport noise has two sides: external noise affecting the inhabitants of the settlement and noise in the vehicle where the driver's workplace and the seats of the passengers are. The object of research is the level of the generated internal noise emitted by the movement of a car on the territory of the city of Sofia. The values of the basic equivalent level of noise emitted during the movement of two laboratory cars of the same class with gasoline and diesel engines were determined. A comparison was made of the noise generated during aggressive and normal driving by the driver of the cars.
{"title":"Petrol and Diesel Engines Sound Measuring and Analyzing in Real Road Conditions","authors":"K. Dimitrov, Tsvetan Valkovski, I. Damyanov, Gerogi Mladenov","doi":"10.1109/TELECOM56127.2022.10017327","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017327","url":null,"abstract":"The problem of transport noise has two sides: external noise affecting the inhabitants of the settlement and noise in the vehicle where the driver's workplace and the seats of the passengers are. The object of research is the level of the generated internal noise emitted by the movement of a car on the territory of the city of Sofia. The values of the basic equivalent level of noise emitted during the movement of two laboratory cars of the same class with gasoline and diesel engines were determined. A comparison was made of the noise generated during aggressive and normal driving by the driver of the cars.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"511 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132558747","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017334
Veska Gancheva, Stella Vetova
A concept for data integration and risk analysis in animal husbandry production is presented in this paper. The proposed animal husbandry data integration and analysis model structure consists of three layers, each of which combines the tasks to be performed. The architecture for data integration and its components are described. The workflow organization is depicted in details including modules and their connections used for data exchange. On the base of the presented workflow experiments were implemented. To perform the experimental part of the study, statistical data on the population of domestic animals is used. The analysis of their results show the trend in the risk of animal husbandry production.
{"title":"Approach and Concept of Workflow for Animal Husbandry Data Integration and Analysis","authors":"Veska Gancheva, Stella Vetova","doi":"10.1109/TELECOM56127.2022.10017334","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017334","url":null,"abstract":"A concept for data integration and risk analysis in animal husbandry production is presented in this paper. The proposed animal husbandry data integration and analysis model structure consists of three layers, each of which combines the tasks to be performed. The architecture for data integration and its components are described. The workflow organization is depicted in details including modules and their connections used for data exchange. On the base of the presented workflow experiments were implemented. To perform the experimental part of the study, statistical data on the population of domestic animals is used. The analysis of their results show the trend in the risk of animal husbandry production.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131946304","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017323
Vasil Vatakov, E. Pencheva, E. Dimitrova
The railway transport must provide secure, safe, reliable, and sustainable services. Railway services rely on mission critical communications that operate at critical moments, providing the availability, resilience, and security that standard commercial networks are not designed to provide. They ensure that the right information is placed in the right hands at the right time in the right place. Future Railway Mobile Communication System (FRMCS) is defined as a standard for next generation communications in railway transport. The paper presents an overview of technical capabilities of fifth generation (5G) communications and Internet of Thing (IoT) which enable FRMCS transport and communication services.
{"title":"New Radio and Internet of Things Technologies for Future Railway Communications","authors":"Vasil Vatakov, E. Pencheva, E. Dimitrova","doi":"10.1109/TELECOM56127.2022.10017323","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017323","url":null,"abstract":"The railway transport must provide secure, safe, reliable, and sustainable services. Railway services rely on mission critical communications that operate at critical moments, providing the availability, resilience, and security that standard commercial networks are not designed to provide. They ensure that the right information is placed in the right hands at the right time in the right place. Future Railway Mobile Communication System (FRMCS) is defined as a standard for next generation communications in railway transport. The paper presents an overview of technical capabilities of fifth generation (5G) communications and Internet of Thing (IoT) which enable FRMCS transport and communication services.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"442 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131572903","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017325
V. Markova, Silviya Filkova
Deviation from a healthy posture suggests the presence of neuromuscular imbalance and may be associated with certain musculoskeletal complaints, such as neck pain. We measured the craniovertebral angle (CVA) of the spine in 100 healthy adults who worked at a computer for more than two hours per day for more than two years. We found a weak, positive, statistically significant linear relationship between the frequency of reported pain and the degree of pain (Pearson's r=0.246, p=0.014) and a moderate relationship with the measured CVA values for sitting and standing (r=0.403, p=0.001). A higher frequency (at 72%) and severity (60%) of pain symptom was calculated in study participants who had a CVA measured below 50° from a standing position (p>0.05). Effective management of cervical pain is beneficial to clinicians and healthcare professionals involved in spinal rehabilitation. The aim of the present study was to investigate the influence of sagittal alignment of the cervical spine on the frequency and severity of pain in this region.
{"title":"Severity and Frequency of Pain Symptoms in the Cervical Spine","authors":"V. Markova, Silviya Filkova","doi":"10.1109/TELECOM56127.2022.10017325","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017325","url":null,"abstract":"Deviation from a healthy posture suggests the presence of neuromuscular imbalance and may be associated with certain musculoskeletal complaints, such as neck pain. We measured the craniovertebral angle (CVA) of the spine in 100 healthy adults who worked at a computer for more than two hours per day for more than two years. We found a weak, positive, statistically significant linear relationship between the frequency of reported pain and the degree of pain (Pearson's r=0.246, p=0.014) and a moderate relationship with the measured CVA values for sitting and standing (r=0.403, p=0.001). A higher frequency (at 72%) and severity (60%) of pain symptom was calculated in study participants who had a CVA measured below 50° from a standing position (p>0.05). Effective management of cervical pain is beneficial to clinicians and healthcare professionals involved in spinal rehabilitation. The aim of the present study was to investigate the influence of sagittal alignment of the cervical spine on the frequency and severity of pain in this region.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123804135","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017264
Teodor Lliev, Ivaylov Stoyanov, G. Mihaylov
In modern power electronic systems high switching frequencies are implemented to increase the power of density, but electromagnetic compatibility (EMC) filtering components are responsible for a large number to the occupation of the power system. In a world where space gets expensive, the volumetric reduction of the components in EMC filters are of great importance, aiming for reduced dimensions. The main goal of the paper is to design a simulation of filter up to 5 kHz to meet the requirements of electromagnetic compatibility and EMC harmonics through which, the current sensor of the EMC has a lower measurement mistake.
{"title":"Integrated Noise Compensation of Electromagnetic Interference for E-cars","authors":"Teodor Lliev, Ivaylov Stoyanov, G. Mihaylov","doi":"10.1109/TELECOM56127.2022.10017264","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017264","url":null,"abstract":"In modern power electronic systems high switching frequencies are implemented to increase the power of density, but electromagnetic compatibility (EMC) filtering components are responsible for a large number to the occupation of the power system. In a world where space gets expensive, the volumetric reduction of the components in EMC filters are of great importance, aiming for reduced dimensions. The main goal of the paper is to design a simulation of filter up to 5 kHz to meet the requirements of electromagnetic compatibility and EMC harmonics through which, the current sensor of the EMC has a lower measurement mistake.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132116082","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017266
I. Ivanov, Mariyana Dimitrova, A. Ivanov
Penetration testing involves an authorized attempt to gain unauthorized access to a computer system, application, or data. Ethical hacking involves duplicating the strategies and actions of malicious attackers. This practice helps identify security vulnerabilities that can be patched before a malicious attacker has a chance to exploit them. The article examines and analyzes the penetration tests in laboratory conditions, as well as their practical implementation.
{"title":"Laboratory Penetration Test Studies","authors":"I. Ivanov, Mariyana Dimitrova, A. Ivanov","doi":"10.1109/TELECOM56127.2022.10017266","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017266","url":null,"abstract":"Penetration testing involves an authorized attempt to gain unauthorized access to a computer system, application, or data. Ethical hacking involves duplicating the strategies and actions of malicious attackers. This practice helps identify security vulnerabilities that can be patched before a malicious attacker has a chance to exploit them. The article examines and analyzes the penetration tests in laboratory conditions, as well as their practical implementation.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131441476","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017332
Gerogi Mladenov, I. Damyanov, D. Saliev, Emil Ionchev
The current paper describes a complex measurement system of the vehicle emissions which is based on electrochemical sensors for nitrogen oxides (NOx), carbon monoxide (CO) and sulfur dioxide (SO2), photoionization detector (PID) for measurement of the volatile organic compounds (VOCs) levels and particulate matter (PM) sensor. The measurement data are displayed on an intelligent HMI LCD/TFT display with UART interface and capacitive touch screen and are written on SD card. Simultaneously all data are transferred to a remote server via GSM/GPRS modem or Bluetooth connection for real-time analysis.
{"title":"Design of Measurement System for Vehicle Emissions in Real Road Conditions","authors":"Gerogi Mladenov, I. Damyanov, D. Saliev, Emil Ionchev","doi":"10.1109/TELECOM56127.2022.10017332","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017332","url":null,"abstract":"The current paper describes a complex measurement system of the vehicle emissions which is based on electrochemical sensors for nitrogen oxides (NOx), carbon monoxide (CO) and sulfur dioxide (SO2), photoionization detector (PID) for measurement of the volatile organic compounds (VOCs) levels and particulate matter (PM) sensor. The measurement data are displayed on an intelligent HMI LCD/TFT display with UART interface and capacitive touch screen and are written on SD card. Simultaneously all data are transferred to a remote server via GSM/GPRS modem or Bluetooth connection for real-time analysis.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134590988","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017265
Vasil Vatakov, E. Pencheva, E. Dimitrova
Artificial Intelligence (AI) technologies play an important role in digitalizing railway industry. The AI based solutions can improve railway operation and maintenance, increase safety, and contribute to environment protection. The paper considers Internet of Things and Digital twin technologies as key enablers for deployment of AI in the railway sector. The paper discusses capabilities of AI for intelligent planning, management and maintenance of railway systems and describes recent scenarios for deployment of intelligence at the edge of private mobile railway networks.
{"title":"Recent Advances in Artificial Intelligence for Improving Railway Operations","authors":"Vasil Vatakov, E. Pencheva, E. Dimitrova","doi":"10.1109/TELECOM56127.2022.10017265","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017265","url":null,"abstract":"Artificial Intelligence (AI) technologies play an important role in digitalizing railway industry. The AI based solutions can improve railway operation and maintenance, increase safety, and contribute to environment protection. The paper considers Internet of Things and Digital twin technologies as key enablers for deployment of AI in the railway sector. The paper discusses capabilities of AI for intelligent planning, management and maintenance of railway systems and describes recent scenarios for deployment of intelligence at the edge of private mobile railway networks.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133056891","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}
Pub Date : 2022-10-27DOI: 10.1109/TELECOM56127.2022.10017261
I. Nachev, I. Iliev
The paper discusses a Z-shape electromagnetic band gap (EBG) structure to improve the radiation characteristic of various antenna types. Experimental results of EBG structures integration in the phased array antenna (2×2 construction variety and nine radiation pattern states) show that structures of this type, designed to meet the document described conditions, is available to improve antenna radiation characteristic - increases the antenna gain and narrow the radiation pattern beamwidth. The study purpose is to show that when integrating the structure into the scanning antenna array, offset angle of the antenna beams in the scanning mode also changes. In addition, increasing gain and narrowing the beamwidth also can reduce side lobes levelsA comparison between simulated and measured results of the antenna system is presented, which clearly shows the improving properties of the proposed structure.
{"title":"Z-shape EBG Structure Improving the Phased Antenna Array Radiation Pattern with Autonomous Aerial Vehicle Navigation Application","authors":"I. Nachev, I. Iliev","doi":"10.1109/TELECOM56127.2022.10017261","DOIUrl":"https://doi.org/10.1109/TELECOM56127.2022.10017261","url":null,"abstract":"The paper discusses a Z-shape electromagnetic band gap (EBG) structure to improve the radiation characteristic of various antenna types. Experimental results of EBG structures integration in the phased array antenna (2×2 construction variety and nine radiation pattern states) show that structures of this type, designed to meet the document described conditions, is available to improve antenna radiation characteristic - increases the antenna gain and narrow the radiation pattern beamwidth. The study purpose is to show that when integrating the structure into the scanning antenna array, offset angle of the antenna beams in the scanning mode also changes. In addition, increasing gain and narrowing the beamwidth also can reduce side lobes levelsA comparison between simulated and measured results of the antenna system is presented, which clearly shows the improving properties of the proposed structure.","PeriodicalId":359231,"journal":{"name":"2022 30th National Conference with International Participation (TELECOM)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115412783","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}
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