Răzvan Bogdan - Academia.edu (original) (raw)

Papers by Răzvan Bogdan

Research paper thumbnail of Smart traffic sign detection on autonomous car

2018 International Symposium on Electronics and Telecommunications (ISETC)

The development and improvement of technology has enabled the use of more and more processing sys... more The development and improvement of technology has enabled the use of more and more processing systems and power in nowadays cars. “Ubiquitous computing” has given the possibility of creating smarter, faster, low-power and smaller computing systems which can be integrated in automotive ECUs. Thus, cars can perform more complex operations by including ECUs with multiple cores, which can now provide multiple active safety features like real-time traffic sign detection using powerful cameras, obstacle detection using radar systems and more often highly automated cars.

Research paper thumbnail of Automotive Internal Development Process Improvement for Assuring Compliance with the ASPICE for Cybersecurity Extension

Communications in computer and information science, 2022

Research paper thumbnail of Optimization of AUTOSAR Communication Stack in the Context of Advanced Driver Assistance Systems

Sensors

New trends in the automotive industry such as autonomous driving and Car2X require a large amount... more New trends in the automotive industry such as autonomous driving and Car2X require a large amount of data to be exchanged between different devices. Radar sensors are key components in developing vehicles of the future, therefore these devices are used in a large spectrum of applications, where data traffic is of paramount importance. As a result, communication traffic volumes have become more complex, leading to the research of optimization approaches to be applied at the AUTOSAR level. Our paper offers such an optimization solution at the AUTOSAR communication level. The radar sensor is accessed in a remote manner, and the experiments aimed at performance measurements revealed that our solution is superior to the Full AUTOSAR implementation in terms of memory usage and runtime measurements.

Research paper thumbnail of Electron driven reactive processes involving H$^+_2$ and HD$^+$ molecular cations in the Early Universe

Cornell University - arXiv, Mar 2, 2022

We describe the major low-energy electron-impact processes involving H + 2 and HD + , relevant fo... more We describe the major low-energy electron-impact processes involving H + 2 and HD + , relevant for the astrochemistry of the early Universe: Dissociative recombination, elastic, inelastic and superelastic scattering. We report cross sections and Maxwellian rate coefficients of both rotational and vibrational transitions, and outline several important features, like isotopic, rotational and resonant effects.

Research paper thumbnail of Application Using Standard Communication Between Medical Facilities

Studies in health technology and informatics, 2021

The web-based application described in this paper will support the patient to receive the treatme... more The web-based application described in this paper will support the patient to receive the treatment quicker and the physician to generate the prescription easier. The patient will have a real time information if their treatment/prescription is available in the pharmacy. Using a cloud solution will have all the information always available and without delays, the only requirement is the Internet connectivity. Using standardized communication as HL7 FHIR, the information exchanged is easier understanded by different medical units, and in the future other medical units can access the patient treatment/prescription and have a medical history, in this way the patient will receive better quality in treatment and health care.

Research paper thumbnail of Strains and Displacements from the Structure of the Towers of the Extracting Installations with Wessels and Double Pulleys in the Case of the Applyance of the Emergency Brake

Fiabilitate şi Durabilitate, 2018

In the paper there are presented certain aspects concerning the determination of the state of str... more In the paper there are presented certain aspects concerning the determination of the state of strain and displacements from the structure of the towers of the extracting installations due to the loads transmitted through the bearings of the extracting pulleys in the case of the application of the emergency brake, on the increase of speed above the maximum admitted, a case considered perturbation or emergency.

Research paper thumbnail of The Verification by Calculus of the Transmission of the Extraction Machine's Reducer from the Old Pit with Skip – Lonea Minig Plant

Fiabilitate şi Durabilitate, 2019

The extraction machine includes as components a cylindrical reducer with two steps, between the t... more The extraction machine includes as components a cylindrical reducer with two steps, between the two electrical engines of 500 kW and the drive wheel. At the level of the revolution gear of the extraction machine, in time, damage to the gears' teeth has appeared, a phenomenon which manifests continually, without having a specific cyclicality, but permanently evolving. The breaking of the teeth of the gear's gears in the extreme areas of the dentition – areas that before breaking had a wear accented by contact usury (pitting) - is a deterioration phenomenon that depends on many factors, such as: the material of the gears, the size and the geometrical and kinematic elements of the dentition, the characteristics of the flanks' surface, the mechanical solicitations, the oiling and the quality of the lubricant. These problems that appeared regarding the exploitation of the reducer of the extraction machine lead to the decrease of functioning safety, and even to its halting. In...

Research paper thumbnail of Analysis of Compensating Cable Connecting Devices for Winding Installation Vessels

Fiabilitate şi Durabilitate, 2017

Winding installations have the role of transporting, between underground and surface, useful mine... more Winding installations have the role of transporting, between underground and surface, useful minerals, materials, equipment, and people, with extraction vessels. Cable connecting devices connect winding installation cables to extraction vessels. Depending on their design, connecting cables can be: with loop and core, self-tightening with wedged core on one or both sides; with hinged jaw; with cone-shaped friction wedges; with wedges and bridles. The paper presents an analysis of flat metal cable connecting devices.

Research paper thumbnail of THE STUDY OF USING A SAFETY COUPLING WITH BALLS AT THE ROTATION GEAR OF THE EXCAVATOR WITH ROTOR EsRc-1400

Fiabilitate şi Durabilitate, 2019

E It is well known that couplings are linkage and driving organs which have the role of transmitt... more E It is well known that couplings are linkage and driving organs which have the role of transmitting the rotation movement from one shaft to another or from one machine organ to another. The transmission is made without the modification of the value or the direction of movement. In some situations, couplings are conceived in such a way that they ensure the protection against solicitation at overload or to maintain the link only between certain speed limits. In this work, we show the study of the possibility of using a safety coupling with balls at the rotation gear of the excavator with rotor.

Research paper thumbnail of Aspects Regarding Reduction of a Rectilinear Homogeneous Bar in a Material Point System Having the Same Inertial Properties

Journal of Research and Innovation for Sustainable Society, 2020

The paper presents aspects regarding reduction calculation of a rectilinear homogenous bar in a m... more The paper presents aspects regarding reduction calculation of a rectilinear homogenous bar in a material point system maintaining the same inertial properties as the bar

Research paper thumbnail of Study of the Possibility of Reducing a Rectilinear Neohomogeneous Bar to a Material Points System of the Same Inertial Properties as That of the Bar

Journal of Research and Innovation for Sustainable Society, 2020

The paper presents aspects regarding the possibility of reducing a neohomogeneous rectilinear bar... more The paper presents aspects regarding the possibility of reducing a neohomogeneous rectilinear bar for which its density variation is known, to a system of material points, maintaining the same inertial properties as that of the bar.

Research paper thumbnail of The Verification Calculus of the Driving Wheel of the Extraction Machine at the Old Pit with a Skip – Lonea Mining Plant

Fiabilitate şi Durabilitate, 2019

Extracting coal from the underground and sterile from Mining Plant Lonea is made by using the ext... more Extracting coal from the underground and sterile from Mining Plant Lonea is made by using the extraction installation with a skip, which includes an extraction machine located in the tower of the old pit, having two skips of 8 tons each. Any malfunction of the extraction machine can lead to important production losses and to the endangerment of the state of security and safety of both the deposit and the working staff. Over the years, in the case of the wheel of the extraction machine, we had fissures in the welding chain of the pap and fissures of the stiffening ribs of the braking disc, which have evolved in time in what regards dimensions and number. To eliminate these fissures, we undertook operations of reparation, by removing and restoring the welding chains in the affected areas of the wheel. In order to determine the causes of the cracking of the welding chains, and in order to guarantee the good functioning of the extraction machine, we undertook a study to check the solici...

Research paper thumbnail of Brain Journal - Sentiment Analysis On Embedded Systems Blended Courses

Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic ci... more Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.

Research paper thumbnail of Brain Journal-Sentiment Analysis On Embedded Systems Blended Courses-Figure 3. Sentiment Analysis On Extracted Themes

Figure 3 is presenting the sentiment analysis results from the point of view of the themes extrac... more Figure 3 is presenting the sentiment analysis results from the point of view of the themes extracted from the corpus. The same preoccupation for the cost of the course is revealed, but this time the fact that MOOCs are free is appreciated. Students perceive that an integration of MOOCs into blended courses leads to a rapid information of the topics, such a feature receiving a high positive score of +3.46. The detailed explanations in this blended approach received a positive impact from the students with a total score of +2.70, but also the gained knowledge is among the most highly rated corpus themes.

Research paper thumbnail of Brain Journal-Sentiment Analysis On Embedded Systems Blended Courses-Figure 1. Semantria Result

In Figure 1 the Semantria output is presented, having a positive polarity, with a score of 0.218.... more In Figure 1 the Semantria output is presented, having a positive polarity, with a score of 0.218. What is interesting to note here are the keywords extracted from students' feedback. They noticed the integration of MOOCs in the Embedded Systems course as positive due to the fact that the new information is perceived as easier and the gained knowledge seems to be valuable. Students are affected by too many concepts and also by the idea of paying for the course.

Research paper thumbnail of BRAIN Journal - Sentiment Analysis on Embedded Systems Blended Courses

<i>Abstract</i><br>Massive Open Online Courses (MOOCs) have been producing an e... more <i>Abstract</i><br>Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.<br><b>Find more at:</b><b>https://www.edusoft.ro/brain/index.php/brain/article/view/671</b><br&gt;

Research paper thumbnail of Vibromechanical Diagnosis of the Winding Machine in the Old Shaft with Skip in Lonea Mine

The publications of the MultiScience - XXXI. MicroCAD International Scientific Conference, 2017

To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mine, the dynam... more To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mine, the dynamic analysis of the driving wheel (Koepe wheel) was performed, by resistive electric tensometry methods, acceleration measurements, and vibromechanical analysis on the bearings of Koepe driving wheels, on functioning cycles and vibromechanical analysis of the reduction gear. The paper presents aspects regarding vibromechanical measurements in the winding machine.

Research paper thumbnail of A Practical Experience on the Amazon Alexa Integration in Smart Offices

Sensors (Basel, Switzerland), 2021

Smart offices are dynamically evolving spaces meant to enhance employees’ efficiency, but also to... more Smart offices are dynamically evolving spaces meant to enhance employees’ efficiency, but also to create a healthy and proactive working environment. In a competitive business world, the challenge of providing a balance between the efficiency and wellbeing of employees may be supported with new technologies. This paper presents the work undertaken to build the architecture needed to integrate voice assistants into smart offices in order to support employees in their daily activities, like ambient control, attendance system and reporting, but also interacting with project management services used for planning, issue tracking, and reporting. Our research tries to understand what are the most accepted tasks to be performed with the help of voice assistants in a smart office environment, by analyzing the system based on task completion and sentiment analysis. For the experimental setup, different test cases were developed in order to interact with the office environment formed by specif...

Research paper thumbnail of Sentiment Analysis on Embedded Systems Blended Courses

Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic ci... more Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.

Research paper thumbnail of Diagnosis of the Winding Machine in the Old Shaft with Skip in Lonea Mining Plant

To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mining Plant, t... more To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mining Plant, the dynamic analysis of the driving wheel (Koepe wheel) was performed, by resistive electric tensometry methods, acceleration measurements, and vibromechanical analysis on the bearings of Koepe driving wheels, on functioning cycles and vibromechanical analysis of the reduction gear. The paper presents aspects regarding vibromechanical measurements and resistive electric tensometry methods in the winding machine..

Research paper thumbnail of Smart traffic sign detection on autonomous car

2018 International Symposium on Electronics and Telecommunications (ISETC)

The development and improvement of technology has enabled the use of more and more processing sys... more The development and improvement of technology has enabled the use of more and more processing systems and power in nowadays cars. “Ubiquitous computing” has given the possibility of creating smarter, faster, low-power and smaller computing systems which can be integrated in automotive ECUs. Thus, cars can perform more complex operations by including ECUs with multiple cores, which can now provide multiple active safety features like real-time traffic sign detection using powerful cameras, obstacle detection using radar systems and more often highly automated cars.

Research paper thumbnail of Automotive Internal Development Process Improvement for Assuring Compliance with the ASPICE for Cybersecurity Extension

Communications in computer and information science, 2022

Research paper thumbnail of Optimization of AUTOSAR Communication Stack in the Context of Advanced Driver Assistance Systems

Sensors

New trends in the automotive industry such as autonomous driving and Car2X require a large amount... more New trends in the automotive industry such as autonomous driving and Car2X require a large amount of data to be exchanged between different devices. Radar sensors are key components in developing vehicles of the future, therefore these devices are used in a large spectrum of applications, where data traffic is of paramount importance. As a result, communication traffic volumes have become more complex, leading to the research of optimization approaches to be applied at the AUTOSAR level. Our paper offers such an optimization solution at the AUTOSAR communication level. The radar sensor is accessed in a remote manner, and the experiments aimed at performance measurements revealed that our solution is superior to the Full AUTOSAR implementation in terms of memory usage and runtime measurements.

Research paper thumbnail of Electron driven reactive processes involving H$^+_2$ and HD$^+$ molecular cations in the Early Universe

Cornell University - arXiv, Mar 2, 2022

We describe the major low-energy electron-impact processes involving H + 2 and HD + , relevant fo... more We describe the major low-energy electron-impact processes involving H + 2 and HD + , relevant for the astrochemistry of the early Universe: Dissociative recombination, elastic, inelastic and superelastic scattering. We report cross sections and Maxwellian rate coefficients of both rotational and vibrational transitions, and outline several important features, like isotopic, rotational and resonant effects.

Research paper thumbnail of Application Using Standard Communication Between Medical Facilities

Studies in health technology and informatics, 2021

The web-based application described in this paper will support the patient to receive the treatme... more The web-based application described in this paper will support the patient to receive the treatment quicker and the physician to generate the prescription easier. The patient will have a real time information if their treatment/prescription is available in the pharmacy. Using a cloud solution will have all the information always available and without delays, the only requirement is the Internet connectivity. Using standardized communication as HL7 FHIR, the information exchanged is easier understanded by different medical units, and in the future other medical units can access the patient treatment/prescription and have a medical history, in this way the patient will receive better quality in treatment and health care.

Research paper thumbnail of Strains and Displacements from the Structure of the Towers of the Extracting Installations with Wessels and Double Pulleys in the Case of the Applyance of the Emergency Brake

Fiabilitate şi Durabilitate, 2018

In the paper there are presented certain aspects concerning the determination of the state of str... more In the paper there are presented certain aspects concerning the determination of the state of strain and displacements from the structure of the towers of the extracting installations due to the loads transmitted through the bearings of the extracting pulleys in the case of the application of the emergency brake, on the increase of speed above the maximum admitted, a case considered perturbation or emergency.

Research paper thumbnail of The Verification by Calculus of the Transmission of the Extraction Machine's Reducer from the Old Pit with Skip – Lonea Minig Plant

Fiabilitate şi Durabilitate, 2019

The extraction machine includes as components a cylindrical reducer with two steps, between the t... more The extraction machine includes as components a cylindrical reducer with two steps, between the two electrical engines of 500 kW and the drive wheel. At the level of the revolution gear of the extraction machine, in time, damage to the gears' teeth has appeared, a phenomenon which manifests continually, without having a specific cyclicality, but permanently evolving. The breaking of the teeth of the gear's gears in the extreme areas of the dentition – areas that before breaking had a wear accented by contact usury (pitting) - is a deterioration phenomenon that depends on many factors, such as: the material of the gears, the size and the geometrical and kinematic elements of the dentition, the characteristics of the flanks' surface, the mechanical solicitations, the oiling and the quality of the lubricant. These problems that appeared regarding the exploitation of the reducer of the extraction machine lead to the decrease of functioning safety, and even to its halting. In...

Research paper thumbnail of Analysis of Compensating Cable Connecting Devices for Winding Installation Vessels

Fiabilitate şi Durabilitate, 2017

Winding installations have the role of transporting, between underground and surface, useful mine... more Winding installations have the role of transporting, between underground and surface, useful minerals, materials, equipment, and people, with extraction vessels. Cable connecting devices connect winding installation cables to extraction vessels. Depending on their design, connecting cables can be: with loop and core, self-tightening with wedged core on one or both sides; with hinged jaw; with cone-shaped friction wedges; with wedges and bridles. The paper presents an analysis of flat metal cable connecting devices.

Research paper thumbnail of THE STUDY OF USING A SAFETY COUPLING WITH BALLS AT THE ROTATION GEAR OF THE EXCAVATOR WITH ROTOR EsRc-1400

Fiabilitate şi Durabilitate, 2019

E It is well known that couplings are linkage and driving organs which have the role of transmitt... more E It is well known that couplings are linkage and driving organs which have the role of transmitting the rotation movement from one shaft to another or from one machine organ to another. The transmission is made without the modification of the value or the direction of movement. In some situations, couplings are conceived in such a way that they ensure the protection against solicitation at overload or to maintain the link only between certain speed limits. In this work, we show the study of the possibility of using a safety coupling with balls at the rotation gear of the excavator with rotor.

Research paper thumbnail of Aspects Regarding Reduction of a Rectilinear Homogeneous Bar in a Material Point System Having the Same Inertial Properties

Journal of Research and Innovation for Sustainable Society, 2020

The paper presents aspects regarding reduction calculation of a rectilinear homogenous bar in a m... more The paper presents aspects regarding reduction calculation of a rectilinear homogenous bar in a material point system maintaining the same inertial properties as the bar

Research paper thumbnail of Study of the Possibility of Reducing a Rectilinear Neohomogeneous Bar to a Material Points System of the Same Inertial Properties as That of the Bar

Journal of Research and Innovation for Sustainable Society, 2020

The paper presents aspects regarding the possibility of reducing a neohomogeneous rectilinear bar... more The paper presents aspects regarding the possibility of reducing a neohomogeneous rectilinear bar for which its density variation is known, to a system of material points, maintaining the same inertial properties as that of the bar.

Research paper thumbnail of The Verification Calculus of the Driving Wheel of the Extraction Machine at the Old Pit with a Skip – Lonea Mining Plant

Fiabilitate şi Durabilitate, 2019

Extracting coal from the underground and sterile from Mining Plant Lonea is made by using the ext... more Extracting coal from the underground and sterile from Mining Plant Lonea is made by using the extraction installation with a skip, which includes an extraction machine located in the tower of the old pit, having two skips of 8 tons each. Any malfunction of the extraction machine can lead to important production losses and to the endangerment of the state of security and safety of both the deposit and the working staff. Over the years, in the case of the wheel of the extraction machine, we had fissures in the welding chain of the pap and fissures of the stiffening ribs of the braking disc, which have evolved in time in what regards dimensions and number. To eliminate these fissures, we undertook operations of reparation, by removing and restoring the welding chains in the affected areas of the wheel. In order to determine the causes of the cracking of the welding chains, and in order to guarantee the good functioning of the extraction machine, we undertook a study to check the solici...

Research paper thumbnail of Brain Journal - Sentiment Analysis On Embedded Systems Blended Courses

Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic ci... more Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.

Research paper thumbnail of Brain Journal-Sentiment Analysis On Embedded Systems Blended Courses-Figure 3. Sentiment Analysis On Extracted Themes

Figure 3 is presenting the sentiment analysis results from the point of view of the themes extrac... more Figure 3 is presenting the sentiment analysis results from the point of view of the themes extracted from the corpus. The same preoccupation for the cost of the course is revealed, but this time the fact that MOOCs are free is appreciated. Students perceive that an integration of MOOCs into blended courses leads to a rapid information of the topics, such a feature receiving a high positive score of +3.46. The detailed explanations in this blended approach received a positive impact from the students with a total score of +2.70, but also the gained knowledge is among the most highly rated corpus themes.

Research paper thumbnail of Brain Journal-Sentiment Analysis On Embedded Systems Blended Courses-Figure 1. Semantria Result

In Figure 1 the Semantria output is presented, having a positive polarity, with a score of 0.218.... more In Figure 1 the Semantria output is presented, having a positive polarity, with a score of 0.218. What is interesting to note here are the keywords extracted from students' feedback. They noticed the integration of MOOCs in the Embedded Systems course as positive due to the fact that the new information is perceived as easier and the gained knowledge seems to be valuable. Students are affected by too many concepts and also by the idea of paying for the course.

Research paper thumbnail of BRAIN Journal - Sentiment Analysis on Embedded Systems Blended Courses

<i>Abstract</i><br>Massive Open Online Courses (MOOCs) have been producing an e... more <i>Abstract</i><br>Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.<br><b>Find more at:</b><b>https://www.edusoft.ro/brain/index.php/brain/article/view/671</b><br&gt;

Research paper thumbnail of Vibromechanical Diagnosis of the Winding Machine in the Old Shaft with Skip in Lonea Mine

The publications of the MultiScience - XXXI. MicroCAD International Scientific Conference, 2017

To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mine, the dynam... more To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mine, the dynamic analysis of the driving wheel (Koepe wheel) was performed, by resistive electric tensometry methods, acceleration measurements, and vibromechanical analysis on the bearings of Koepe driving wheels, on functioning cycles and vibromechanical analysis of the reduction gear. The paper presents aspects regarding vibromechanical measurements in the winding machine.

Research paper thumbnail of A Practical Experience on the Amazon Alexa Integration in Smart Offices

Sensors (Basel, Switzerland), 2021

Smart offices are dynamically evolving spaces meant to enhance employees’ efficiency, but also to... more Smart offices are dynamically evolving spaces meant to enhance employees’ efficiency, but also to create a healthy and proactive working environment. In a competitive business world, the challenge of providing a balance between the efficiency and wellbeing of employees may be supported with new technologies. This paper presents the work undertaken to build the architecture needed to integrate voice assistants into smart offices in order to support employees in their daily activities, like ambient control, attendance system and reporting, but also interacting with project management services used for planning, issue tracking, and reporting. Our research tries to understand what are the most accepted tasks to be performed with the help of voice assistants in a smart office environment, by analyzing the system based on task completion and sentiment analysis. For the experimental setup, different test cases were developed in order to interact with the office environment formed by specif...

Research paper thumbnail of Sentiment Analysis on Embedded Systems Blended Courses

Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic ci... more Massive Open Online Courses (MOOCs) have been producing an electrified feeling in the academic circles since 2012. This was amplified once profit initiatives like Coursera and Udacity joined their forces with renowned universities like Stanford, Harvard and the Massachusetts Institute of Technology. This paper presents a modality of integrating Embedded Systems MOOCs into blended courses, but at the same time it provides an evaluation of this approach: the sentiment analysis technique. Such an evaluation not only reveals the polarity, but also valuable insights into improving the course content and integration of MOOCs into the intricacies of teaching embedded systems.

Research paper thumbnail of Diagnosis of the Winding Machine in the Old Shaft with Skip in Lonea Mining Plant

To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mining Plant, t... more To study the operation of the winding machine in the Old Shaft with Skip in Lonea Mining Plant, the dynamic analysis of the driving wheel (Koepe wheel) was performed, by resistive electric tensometry methods, acceleration measurements, and vibromechanical analysis on the bearings of Koepe driving wheels, on functioning cycles and vibromechanical analysis of the reduction gear. The paper presents aspects regarding vibromechanical measurements and resistive electric tensometry methods in the winding machine..