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View article: IJMA-based evaluation of ground motion recordings from Vrancea intermediate-depth earthquakes
IJMA-based evaluation of ground motion recordings from Vrancea intermediate-depth earthquakes Open
A ground motion database of about 600 recordings from 15 intermediate-depth Vrancea earthquakes which occurred in the period 1977–2024 was assembled for this study. The Japan Meteorological Agency intensity ( I JMA ) is evaluated for all t…
View article: Magnetic, Electronic Structure and Micromagnetic Properties of Ferrimagnetic DyCo3 as a Platform for Ferrimagnetic Skyrmions
Magnetic, Electronic Structure and Micromagnetic Properties of Ferrimagnetic DyCo3 as a Platform for Ferrimagnetic Skyrmions Open
We demonstrate tunable ferrimagnetic properties in both bulk and thin film ferrimagnetic DyCo3 compatible with the hosting of topological magnetic chiral textures, namely skyrmions suitable for integration into spintronic applications with…
View article: Assessment of Frost Depth in Romania
Assessment of Frost Depth in Romania Open
The study of severe climate and weather conditions has accelerated in recent decades, partly due to political engagement. However, historical climate monitoring data has not received sufficient attention. Reliable assessments of the maximu…
View article: Assessment of Freeze-Thaw in Romania
Assessment of Freeze-Thaw in Romania Open
Due in part to political participation, the study of severe climate and weather conditions has attracted a lot of attention in recent decades. However, there has been insufficient focus on the historical climate monitoring data. Accurate e…
View article: Stacking model of a three-dimensional second-order topological insulator manifesting quantum anomalous Hall effect
Stacking model of a three-dimensional second-order topological insulator manifesting quantum anomalous Hall effect Open
We investigate the transport and energy spectrum properties of a three-dimensional high-order topological structure formed by stacking two-dimensional square diatomic Chern insulator lattices. Electron-hole symmetry and the energy spectrum…
View article: Assessment of Frost Depth and Frost Heave in Romania
Assessment of Frost Depth and Frost Heave in Romania Open
The investigation of extreme weather and climate events has gained momentum in the last few decades, spurred in part by political involvement. However, not enough attention has been paid to the historical recorded data of climate monitorin…
View article: Vertical Elastic Acceleration Response Spectra for Vrancea Intermediate-Depth Earthquakes
Vertical Elastic Acceleration Response Spectra for Vrancea Intermediate-Depth Earthquakes Open
This study is focused on the evaluation of vertical elastic acceleration response spectra for Vrancea intermediate-depth earthquakes in Romania in the context of the ongoing update of the national seismic design code. The ground motion dat…
View article: Evolution, Recent Progress and Perspectives of the Seismic Monitoring of Building Structures in Romania
Evolution, Recent Progress and Perspectives of the Seismic Monitoring of Building Structures in Romania Open
The seismic instrumentation of structures in order to assess their condition and to track it over long periods or after representative events has proven to be a topic of large interest, under continuous development at international level. …
View article: Assessment of the Sustainability of Concrete by Ensuring Performance during Structure Service Life
Assessment of the Sustainability of Concrete by Ensuring Performance during Structure Service Life Open
The article presents an original method to assess the sustainability of concrete. The method uses three parameters, namely, performance, lifetime and environmental impact, to calculate a sustainability index. The originality and simplicity…
View article: Assessment of the Sustainability of Concrete by Ensuring Performance During Structure Service Life
Assessment of the Sustainability of Concrete by Ensuring Performance During Structure Service Life Open
The article presents an original method to assess the sustainability of concrete. The method uses three parameters, namely: performance, lifetime and environmental impact, to calculate a sustainability index. The originality and the simpli…
View article: Assessment of the Sustainability of Concrete by Ensuring Performance During Structure Service Life
Assessment of the Sustainability of Concrete by Ensuring Performance During Structure Service Life Open
This article presents a method to assess the sustainability of concrete based on three elements: service life, performance and environmental impact. The method proposes - to achieve similar performance and service life times, regardless of…
View article: Assessing Structural Safety of an Arch Dam Using in Situ Vibration Tests
Assessing Structural Safety of an Arch Dam Using in Situ Vibration Tests Open
Safety of large dams has always been a major concern for engineers throughout the world but also for public opinion, mass-media and politicians. This is usually based on the fact that the collapse of a large dam could result in huge conseq…
View article: Seismic risk assessment of lifelines in Bucharest
Seismic risk assessment of lifelines in Bucharest Open
This study is focused on the seismic risk assessment of lifelines from Bucharest, the capital city of Romania. The damage sustained by the lifelines in Bucharest during the major Vrancea intermediate-depth event of March 1977 is presented.…
View article: Dynamic properties identification for a timber framed masonry house
Dynamic properties identification for a timber framed masonry house Open
Timber framed masonry houses represent a traditional type of house that can be found in many countries in the world, having small differences in details though. In Romania, this type of house is spread around the Vrancea seismic source, bu…
View article: Nonequilibrium quasistationary spin disordered state in the Kitaev-Heisenberg magnet $\alpha$-RuCl$_3$
Nonequilibrium quasistationary spin disordered state in the Kitaev-Heisenberg magnet $\alpha$-RuCl$_3$ Open
Excitation by light pulses enables the manipulation of phases of quantum condensed matter. Here, we photoexcite high-energy holon-doublon pairs as a way to alter the magnetic free energy landscape of the Kitaev-Heisenberg magnet $\alpha$-R…
View article: Energy production assessment in a complex hydropower development
Energy production assessment in a complex hydropower development Open
A complex multi-reservoir hydropower development (HPD) was studied from the point of view of energy production. The Gâlceag HPD system consists of three reservoirs, a high head hydropower plant (HPP) powered by two Francis turbines of 75 M…
View article: GIS use of Land Use/Land Cover layers and historical data for water losses indices
GIS use of Land Use/Land Cover layers and historical data for water losses indices Open
The population growth and/or its use and development of the land is a continuous preoccupation of the decision factors regarding the water supply system in general and the development of the potable water distribution networks in particula…
View article: Edge-state mechanism for the anomalous quantum Hall effect in a diatomic square lattice
Edge-state mechanism for the anomalous quantum Hall effect in a diatomic square lattice Open
The understanding of the Chern insulator and anomalous quantum Hall effect\n(AQHE) in terms of chiral edge states in confined systems is the first aim of\nthe paper. The model we use consists in a diatomic square lattice with hopping\nto t…
View article: Energy and Cost Savings through Pumping Stations Rehabilitation. Case Study in Bucharest
Energy and Cost Savings through Pumping Stations Rehabilitation. Case Study in Bucharest Open
This paper presents the results recorded by upgrading and rehabilitating the pumping stations for an urban water network with a primary goal of diminishing the operation and maintenance costs and a secondary goal of reducing the water loss…
View article: Comparative Analysis and Benchmarking of Water Supply Systems and Services in Central and Eastern Europe
Comparative Analysis and Benchmarking of Water Supply Systems and Services in Central and Eastern Europe Open
This paper deals with a comparative analysis and benchmarking of drinking water supply systems and water supply sector in the selected countries of Central and Eastern Europe. These include the Czech Republic, Poland, Romania, and Slovakia…
View article: EPANET Modelling of a High Head Pumped-Storage Hydropower Facility
EPANET Modelling of a High Head Pumped-Storage Hydropower Facility Open
A complex hydraulic facility is modelled in EPANET. The system consists in an underground high head Hydro Power Plant (HPP) and a Pumping Station (PS), operating in a pumped-storage hydropower scheme with three reservoirs. The complexity o…
View article: Progresses in the operation and functioning of pumping stations for water and wastewater networks
Progresses in the operation and functioning of pumping stations for water and wastewater networks Open
Simultaneously with the social and economical transformations within urban areas, the operating and functioning conditions for all the components of water and wastewater systems have modified in a specific manner in each area. One importan…
View article: Ambient Vibration Tests at Some Buttress Dams in Romania
Ambient Vibration Tests at Some Buttress Dams in Romania Open
The paper presents a selection of results from ambient vibration tests performed during the period 2015 – 2016 at three buttress dams in Romania. The following buttress dams were investigated: (i) Stramtori - Firiza dam on Firiza River (52…
View article: Non-Hermitian approach of edge states and quantum transport in a magnetic field
Non-Hermitian approach of edge states and quantum transport in a magnetic field Open
We develop a manifest non-Hermitian approach of spectral and transport\nproperties of two- dimensional mesoscopic systems in strong magnetic field. The\nfinite system to which several ter- minals are attached constitutes an open\nsystem th…
View article: Phosphorene confined systems in magnetic field, quantum transport, and superradiance in the quasiflat band
Phosphorene confined systems in magnetic field, quantum transport, and superradiance in the quasiflat band Open
Spectral and transport properties of electrons in confined phosphorene systems are investigated in a five hopping parameter tight-binding model, using analytical and numerical techniques. The main emphasis is on the properties of the topol…