Vlad Muresan

Universitatea Tehnica Cluj-Napoca | UT Cluj · Department of Automation

As cities evolve into smarter and more connected environments, there is a growing need for innovative solutions to improve urban mobility. This study examines the potential of integrating blockchain technology into passenger transportation systems within smart cities, with a particular emphasis on a blockchain-enabled Mobility as a Service (MaaS) s...

This paper examines the implementation of a digital product passport (DPP) using Hyperledger Fabric technology to enhance product lifecycle management within the European Union’s circular economy action plan. This study addresses the need for detailed product information on materials, origin, usage, and end-of-life instructions to improve recycling...

In this paper, an original solution for modeling and control of the isotope separation process of the 18O isotope, using artificial intelligence techniques, is proposed. The main difficulties of the approached problem are implied by the following facts: the two separation columns from the structure of the considered separation cascade for the 18O i...

Health is one of the most precious aspects of every person's life. Whether we're talking about a well-functioning heart, nervous system, respiratory system, or simply body weight, each of these branches contributes to a person's overall health. It is important to monitor certain body functions and characteristics as often as possible so that we can...

This paper presents three different methods of image segmentation and analysis of various panoramic dental radiographies. The images are analyzed from different perspectives depending on the dental condition of each patient’s set of images, so the necessary information for establishing a correct diagnostic are extracted and analyzed. The algorithms...

The COVID-19 infectious disease spread in the world represents, by far, one of the most significant moments in humankind’s recent history, affecting daily activities for a long period of time. The data available now allow important modelling developments for the simulation and prediction of the process of an infectious disease spread. The current w...

This manuscript presents the remote monitoring of the main parameters in the 18O isotope separation technological process. It proposes to monitor the operation of the five cracking reactors in the isotope production system, respectively, the temperature in the preheating furnaces, the converter reactors and the cracking reactors. In addition, it pe...

The paper presents an original solution for modeling and simulation of the teeth movement biomedical processes which occur in the case of orthodontic treatments. The direct application of this method consists in the possibility to approximate, with high precision, the orthodontic treatment duration, depending on the physical characteristics of each...

People in the life sciences who work with Artificial Intelligence (AI) and Machine Learning (ML) are under increased pressure to develop algorithms faster than ever. The possibility of revealing innovative insights and speeding breakthroughs lies in using large datasets integrated on several levels. However, even if there is more data at our dispos...

The work proposes an original method for modeling and simulating the triggering of 110 kV interconnection power lines in case of common faults, such as transient or persistent faults. Urban and industrial areas, surrounding urban areas, require a high energy consumption that is being supplied through 110 kV overhead power lines, responsible for dis...

The primary goal of this work is to analyse the panoramic dental radiography from different perspectives and to obtain the best image after processing it, from which then can be extracted the necessary information. The complete system was built in such a way that a dental specialist may utilize it to better examine the characteristics of a patient'...

The main goal of this paper is to analyse the panoramic dental radiography by applying the Canny technique which is customized for this type of images and to obtain an image much more clear to interpret after processing it. From the resulted image then can be extracted all the necessary information for giving a diagnostic. The method can be extende...

This paper is presenting a control solution for the concentration of the 13C isotope, both at the output and inside of the separation column; the proposed solutions are a relay and a PID controller. The 13C isotope results after a distributed parameter process, specifically the chemical exchange process of the carbon dioxide and carbamate. The anal...

Upon an active research regarding the influence of environmental factors on the COVID-19 infection rate, that denoted a divided opinion between a positive or negative influence in term of humidity and the SARS COV-2 virus spread, the authors were able to obtain a quantification effect of relative humidity (RH) influence on the spread of SARS COV-2...

The monitoring of power consumption and the forecasting of load profiles for residential appliances are essential aspects of the control of energy savings/exchanges at multiple hierarchical levels: house, house cluster, neighborhood, and city. External environmental factors (weather conditions) and inhabitants’ behavior influence power consumption,...

This paper presents a solution for the modelling, implementation and simulation of the fractional-order process of producing the enriched 13C isotope, through the chemical exchange between carbamate and carbon dioxide. To achieve the goal of implementation and simulation of the considered process, an original solution for the approximation of fract...

This study provides an overview of the tab-controlled jets to understand and predict the influence of mixing promoting vortices at speeds ranging from subsonic to supersonic. A detailed description of various features of the circular jets controlled by tab-like vortex generators is provided. Here, both the experimental and the numerical investigati...

This paper presents the design of a predictive speed control structure, for a Direct-Current Motor that drives the forward and backward movement of an industrial manipulator. The described manipulator performs discharging actions to extract preheated round billets from inside the rotary hearth furnace and continue the hot rolling process. The mathe...

In this paper, a solution for positioning the unloading machine in order to take out the billets from the rotary hearth furnace is presented. In order to detect the contour of the billet, the image, which was taken by the video camera, has to be processed by applying image filters, which help to reduce the noise and eliminate the unnecessary lines...

In this paper, a solution for the fault tolerant control of a mini hydropower plant is proposed. The mathematical model which describes the dynamics of the electrical energy production process is identified based on processing the experimental data measured during the plant operation. The main real power and frequency control strategy is based on i...

In the paper, the comparison between the efficiency of using artificial intelligence methods and the efficiency of using classical methods in modelling the industrial processes is made, considering as a case study the separation process of the 18O isotope. Firstly, the behavior of the considered isotopic separation process is learned using neural n...

Since February 2020, when the first case of infection with SARS COV-2 virus appeared in Romania, the evolution of COVID-19 pandemic continues to have an ascending allure, reaching in September 2020 a second wave of infections as expected. In order to understand the evolution and spread of this disease over time and space, more and more research is...

In this paper, a comparison between the experimental values for the kinetics of the fast redox reaction between Cu ²⁺ and S 2 O 3 ²⁻ and some possible variants of analogical modeling and numerical simulation for this pre-equilibrium reaction have been presented. One of them is based on a function with a periodical, strongly under-damped component....

This paper presents a home automation plant, consisting of a distributed heating system. It is a system implemented on a residential home, however it could be extended and used for other buildings as well. The paper presents the distributed heating system’s structure, extended from a classical heating system, and the authors also describe the equip...

In this paper is presented a simple possible model which can explain the thermal explosion problem, the existence of an induction period and a sudden rapid temperature rise. As state variables used for modeling are: the pressure, the temperature and the concentration. The time evolutions of these state parameters are analogically modeled using ordi...

The intelligent condition monitoring of wind turbines reduces their downtime and increases reliability. In this manuscript, a feature selection-based methodology that essentially works on regression models is used for identifying faulty scenarios. Supervisory control and data acquisition (SCADA) data with 1009 samples from one year and one month be...

This work explores the extent of jet mixing for a supersonic jet coming out of a Mach 1.8 convergent-divergent nozzle, controlled with two short rectangular vortex-generating actuators located diametrically opposite to each other with an emphasis on numerical methodology. The blockage ratio offered by the tabs is around 0.05. The numerical investig...

A robotic navigation system operates flawlessly under an adequate GPS signal range while indoor navigation systems use the Simultaneous localization and mapping system or other vision-based localization systems. The sensor used in indoor navigation systems is not suitable for low power and small scale robotic system. The wireless area network trans...

This paper presents the development of a cost-effective automatic system for greenhouse environment control. The architectural and functional features were analyzed in the context of the realization of a controlled-environment agricultural system through all its stages: installation, deployment of the software, integration, maintenance, crop contro...

Both cold and flame jets find numerous applications in different fields, ranging from domestic applications to space technology. Indeed, the applications of isothermal and non-isothermal jets in flame heating industry fascinated the researchers to have in-depth understanding. Nevertheless, these benefits are not standalone, rather, they are associa...

The paper presents an original solution for the nonlinear Gaussian control of the 18O isotope concentration at the output of a separation column. The design of the nonlinear controller is based on the proposed separation column mathematical model which is an accurate one. In order to highlight the advantages of using a nonlinear controller, the com...

Elastomeric chains, as means of force delivery, are one of the most studied elements of the orthodontic field. Effects on tooth movement are closely related to force degradation degrees of these polymers. Unfortunately, due to varied manufacturing techniques and materials, different brands of elastomeric chains offer different initial force values...

In this paper, an original solution for modeling and simulation of the nonlinear electrochemical process associated to the Laviron treatment is proposed. The graphite electrodes were coated with mediator by adsorption. The Laviron treatment was firstly used to determine the efficiency of modified electrodes coatings. The experimental data were obta...

Hybrid operation of wind farms has been in the limelight in recent years wherein the stochastic nature of wind causes market operators to choose an optimal strategy to maximize profit. The current work deals with a multi-criteria decision making approach to choose the best possible alternatives for a hybrid wind farm operation. A set of three, non-...

The paper introduces the design, modelling and simulation of an electromechanical actuator device able to produce periodical translation movement. The parameters characterizing this movement (stroke length, force, speed profile) are considered to be remotely programmable via a wireless interface.

Advanced wind measuring systems like Light Detection and Ranging (LiDAR) is useful for wake management in wind farms. However, due to uncertainty in estimating the parameters involved, adaptive control of wake center is needed for a wind farm layout. LiDAR is used to track the wake center trajectory so as to perform wake control simulations, and th...

Advanced wind measuring systems like Light Detection and Ranging (LIDAR) is useful for wake management in wind farms. However, due to uncertainty in estimating the parameters involved, adaptive control of wake center is needed for a wind farm layout. LIDAR is used to track the wake center trajectory so as to perform wake control simulations, and th...