This page has only limited features, please log in for full access.

Unclaimed
Flaviu Mihai Frigura-Iliasa
POLITEHNICA University Timisoara, 2, V. Parvan Bvd., 300223, Timisoara, Romania

Basic Info

Basic Info is private.

Honors and Awards

The user has no records in this section


Career Timeline

The user has no records in this section.


Short Biography

The user biography is not available.
Following
Followers
Co Authors
The list of users this user is following is empty.
Following: 0 users

Feed

Journal article
Published: 30 April 2021 in Computer Communications
Reads 0
Downloads 0

Poor air quality harms human health and the environment. In Europe, emissions of many air pollutants have decreased substantially over the past decades. A significant part of Europe’s population lives in areas, especially cities, where exceedances of air quality standards occur: ozone (O3), nitrogen dioxide (NO2) and particulate matter (PM) pollution pose serious health problems. Several countries have exceeded one or more of their 2010 emission limits for four important air pollutants. Reducing air pollution therefore remains important. This paper presents a low-cost air quality monitoring device that due to the communication technology (LoRaWAN) can be used on large geographical areas. The presented solution was tested and verified on real field service conditions. The obtained data is compared with existing public air quality stations official data.

ACS Style

Attila Simo; Simona Dzitac; Ioan Dzitac; Mihaela Frigura-Iliasa; Flaviu Mihai Frigura-Iliasa. Air quality assessment system based on self-driven drone and LoRaWAN network. Computer Communications 2021, 175, 13 -24.

AMA Style

Attila Simo, Simona Dzitac, Ioan Dzitac, Mihaela Frigura-Iliasa, Flaviu Mihai Frigura-Iliasa. Air quality assessment system based on self-driven drone and LoRaWAN network. Computer Communications. 2021; 175 ():13-24.

Chicago/Turabian Style

Attila Simo; Simona Dzitac; Ioan Dzitac; Mihaela Frigura-Iliasa; Flaviu Mihai Frigura-Iliasa. 2021. "Air quality assessment system based on self-driven drone and LoRaWAN network." Computer Communications 175, no. : 13-24.

Journal article
Published: 08 June 2020 in International Journal of Computers Communications & Control
Reads 0
Downloads 0

This article will present a simple technical solution for a low-power and real-time air quality monitoring system. The whole package of software and hardware technical solutions applied for recording, transmitting and analyzing data is briefly described. This original monitoring system integrates a single chip microcon-troller, several dedicated air pollution surveillance sensors (for PM10, PM2.5, SO2, NO2, CO, O3, VOC, CO2), a LoRaWAN communication module and an online platform. This system was tested and applied under real field conditions. Depending on the measured values, it provides alerts, or, it can lead to the re-placement of specific components in the exhaust equipment. This article will pre-sent some experimental results, validated also by official measurements of government operated air quality stations.

ACS Style

Attila Simo; Simona Dzitac; Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Petru Andea; Dragoș Meianu. Technical Solution for a Real-Time Air Quality Monitoring System. International Journal of Computers Communications & Control 2020, 15, 1 .

AMA Style

Attila Simo, Simona Dzitac, Flaviu Mihai Frigura-Iliasa, Sorin Musuroi, Petru Andea, Dragoș Meianu. Technical Solution for a Real-Time Air Quality Monitoring System. International Journal of Computers Communications & Control. 2020; 15 (4):1.

Chicago/Turabian Style

Attila Simo; Simona Dzitac; Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Petru Andea; Dragoș Meianu. 2020. "Technical Solution for a Real-Time Air Quality Monitoring System." International Journal of Computers Communications & Control 15, no. 4: 1.

Journal article
Published: 29 December 2019 in Applied Sciences
Reads 0
Downloads 0

With respect to health issues, this paperpresents the results of an electromagnetic field (EMF) assessment in the proximity of a high voltage power station located in South Transylvania, Romania. The main parameters taken into account are, according to all standards and recommendations, the RMS (Root Mean Square) value of low frequency (0–300 Hz) electrical field strength E (in kV/m) and magnetic flux density B (in µT). Measurements were performed near all critical pieces of equipment (transformers, switches, busbars, overhead lines), according to the EMF European Directive. Some measurements were made as a function of distance from the HV (high-voltage) equipment, others as a time variation. The main objective was to verify that specific limits are met and, if necessary, to identify protective measures. Finally, safe exposure times for personnel operating at these sites were determined. In the future, detailed maps of EMF variations will be made available to the power companies.

ACS Style

Mihaela Frigura-Iliasa; Felicia Ioana Baloi; Flaviu Mihai Frigura-Iliasa; Attila Simo; Sorin Musuroi; Petru Andea. Health-Related Electromagnetic Field Assessment in the Proximity of High Voltage Power Equipment. Applied Sciences 2019, 10, 260 .

AMA Style

Mihaela Frigura-Iliasa, Felicia Ioana Baloi, Flaviu Mihai Frigura-Iliasa, Attila Simo, Sorin Musuroi, Petru Andea. Health-Related Electromagnetic Field Assessment in the Proximity of High Voltage Power Equipment. Applied Sciences. 2019; 10 (1):260.

Chicago/Turabian Style

Mihaela Frigura-Iliasa; Felicia Ioana Baloi; Flaviu Mihai Frigura-Iliasa; Attila Simo; Sorin Musuroi; Petru Andea. 2019. "Health-Related Electromagnetic Field Assessment in the Proximity of High Voltage Power Equipment." Applied Sciences 10, no. 1: 260.

Journal article
Published: 01 September 2019 in Journal of Green Building
Reads 0
Downloads 0

There are two main approaches when discussing living green walls: an ecological one and an artistic one. Ecological thinking mainly considers environmental aspects, comfort enhancement and energy consumption and oversees human interaction and actual proximity to plants. In opposition, art or architecture installations that involve vegetation, lack technical and ecological aspects, aiming to raise awareness on environmental issues using human interaction either physically (direct) or emotionally (indirect). The present paper aims to analyze methods of combining the two directions, in a functional, ecological, yet aesthetically pleasing composition. In order to further develop previous experiences gathered by the team members, authors of this article, a green installation concept made out of interactive modular systems unites all the knowledge into a new, living, moving, dynamic, interactive structure whose inspiration is taken from nature while using biomimicry as main principle for its development. This new concept responds and is influenced by both external, natural stimuli and by the human factor. Multidisciplinarity is a key element in developing this project, involving architecture, art, interior and landscape design, botany, geometry, mechanical and electrical engineering, leading towards new research directions and innovative approaches in greenery—interior environment connections.

ACS Style

Anamaria Andreea Anghel; Irina Mohora; Alma-Dia Preda (Hapenciuc); Diana Giurea; Flaviu Mihai Frigura-Iliasa. ENVIRONMENTAL TENDENCIES IN MODULAR GREEN INSTALLATIONS. Journal of Green Building 2019, 14, 195 -221.

AMA Style

Anamaria Andreea Anghel, Irina Mohora, Alma-Dia Preda (Hapenciuc), Diana Giurea, Flaviu Mihai Frigura-Iliasa. ENVIRONMENTAL TENDENCIES IN MODULAR GREEN INSTALLATIONS. Journal of Green Building. 2019; 14 (4):195-221.

Chicago/Turabian Style

Anamaria Andreea Anghel; Irina Mohora; Alma-Dia Preda (Hapenciuc); Diana Giurea; Flaviu Mihai Frigura-Iliasa. 2019. "ENVIRONMENTAL TENDENCIES IN MODULAR GREEN INSTALLATIONS." Journal of Green Building 14, no. 4: 195-221.

Journal article
Published: 27 February 2019 in Sustainability
Reads 0
Downloads 0

Due to high mechanical inertia and rapid variations in wind speed over time, at variable wind speeds, the problem of operation in the optimal energetic area becomes complex and in due time it is not always solvable. No work has been found that analyzes the energy-optimal operation of a wind system operating at variable wind speeds over time and that considers the variation of the wind speed over time. In this paper, we take into account the evolution of wind speed over time and its measurement with a low-power turbine, which operates with no load at the mechanical angular velocity ωMAX. The optimal velocity is calculated. The energy that is captured by the wind turbine significantly depends on the mechanical angular velocity. In order to perform a function in the maximum power point (MPP) power point area, the load on the electric generator is changed, and the optimum mechanical velocity is estimated, ωOPTIM, knowing that the ratio ωOPTIM/ωMAX does not depend on the time variation of the wind speed.

ACS Style

Ciprian Sorandaru; Sorin Musuroi; Flaviu Frigura-Iliasa; Doru Vatau; Marian Dordescu. Analysis of the Wind System Operation in the Optimal Energetic Area at Variable Wind Speed over Time. Sustainability 2019, 11, 1249 .

AMA Style

Ciprian Sorandaru, Sorin Musuroi, Flaviu Frigura-Iliasa, Doru Vatau, Marian Dordescu. Analysis of the Wind System Operation in the Optimal Energetic Area at Variable Wind Speed over Time. Sustainability. 2019; 11 (5):1249.

Chicago/Turabian Style

Ciprian Sorandaru; Sorin Musuroi; Flaviu Frigura-Iliasa; Doru Vatau; Marian Dordescu. 2019. "Analysis of the Wind System Operation in the Optimal Energetic Area at Variable Wind Speed over Time." Sustainability 11, no. 5: 1249.

Journal article
Published: 08 February 2019 in Energies
Reads 0
Downloads 0

Metal oxide varistors are applied today inside modern surge arresters for overvoltage protection for all voltage levels. Their main issue is the thermal activation of their crossing current, which could lead to complete destruction by thermal runaway. This article presents a new technological solution developed in order to increase the thermal stability of metal oxide varistors. It consists in connecting in parallel two or more similar varistors (for dividing their current), having a thermal coupling between them (for equalizing their temperatures and forcing them to act together and simultaneously as much as possible). Starting from a finite element computer model performed for each situation (varistor standalone or parallel), up to real measurements, the thermal stability of the equipment was analyzed in permanent and impulse regime. Experiments were carried out in the same conditions. Experimental data obtain from two disk varistors corresponds very well to simulations, proving that parallel connection of varistors, combined with a thermal exchange between them is an efficient technical solution for thermal stability improvement, even if not apparently economically justified.

ACS Style

Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Ciprian Sorandaru; Doru Vatau. Case Study about the Energy Absorption Capacity of Metal Oxide Varistors with Thermal Coupling. Energies 2019, 12, 536 .

AMA Style

Flaviu Mihai Frigura-Iliasa, Sorin Musuroi, Ciprian Sorandaru, Doru Vatau. Case Study about the Energy Absorption Capacity of Metal Oxide Varistors with Thermal Coupling. Energies. 2019; 12 (3):536.

Chicago/Turabian Style

Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Ciprian Sorandaru; Doru Vatau. 2019. "Case Study about the Energy Absorption Capacity of Metal Oxide Varistors with Thermal Coupling." Energies 12, no. 3: 536.

Journal article
Published: 02 January 2019 in Processes
Reads 0
Downloads 0

At the beginning, this article details the manufacturing procedures for varistor materials. Starting from the initial composition of two large series of varistors (those with two additive oxides and those with five additive oxides), there is a major overview of the main stages of the technological process and the equipment used for the production, emphasizing the technological changes that were made. The article continues with the study of the influence of the sintering pressure and the sintering temperature on the electrical properties of the varistor materials made before. There were two experimental series of 7 varistors, one series based on 2 additive oxides and one based on 5 additive oxides. Each varistor of these series was sintered at another temperature, the fundamental purpose being to determine an optimal sintering temperature for each chemical composition. A second activity consisted of manufacturing two more series of varistors with the same chemical composition (2 oxides and 5 additive oxides), which were sintered at two different pressures, for having a set of conclusions on the influence of sintering pressure on the electric performances. All conclusions are underlying a new process for manufacturing metal oxide based varistors.

ACS Style

Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Ciprian Sorandaru; Doru Vatau. New Technical Parameters and Operational Improvements of the Metal Oxide Varistors Manufacturing Process. Processes 2019, 7, 18 .

AMA Style

Flaviu Mihai Frigura-Iliasa, Sorin Musuroi, Ciprian Sorandaru, Doru Vatau. New Technical Parameters and Operational Improvements of the Metal Oxide Varistors Manufacturing Process. Processes. 2019; 7 (1):18.

Chicago/Turabian Style

Flaviu Mihai Frigura-Iliasa; Sorin Musuroi; Ciprian Sorandaru; Doru Vatau. 2019. "New Technical Parameters and Operational Improvements of the Metal Oxide Varistors Manufacturing Process." Processes 7, no. 1: 18.