872 articole găsite pentru „art”.
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New technologies of precise electrometry
Prof. dr. ing. Michael N. Surdu (Ucraina)
Noua abordare a problemei de crestere a preciziei de masurare a cantitatilor electrice este descrisa. Aceasta abordare se bazeaza pe variatiile de influenta a surselor de incertitudine la rezultatul masurarii. De obicei modelul matematic descrie rezultatul m…
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Mecanism de alimentare, omogenizare si dozare rumegus utilizat la presele de fabricat peleti
Dr. ing. Marian Topologeanu
Acest articol prezinta o serie de aspecte privind reducerea impactului negativ al activitatilor economice din industria de prelucrare a lemnului prin realizarea echipamentelor adecvate pentru a presele de peleti si aceastea se refera in principal la mecanismu…
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Applications and service integration of decision support systems using .net platform
Ilie Tamas, Radu Bucea-manea, Rocsana Tonis
In cadrul acestui articol vom discuta despre suportul oferit de platforma .NET pentru arhitectura orientata pe servicii (SOA). Pentru inceput vom face o scurta introducere a platformei .NET si apoi vom aprofunda caracteristicile si principiile de baza ale SOA…
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THE USE OF THE RADIOFREQUENCY FIELD IN MÖSSBAUER MEASUREMENTS
Ph. D. Dipl.Eng. Ion Bibicu
Aplicarea campurilor de radiofrecventa asupra materialelor feromagnetice induce efecte interesante asupra proprietăţilor acestor materiale. Una din metodele de studiu a ac estor efecte este spectroscopia Mossbauer. A fost realizată o instalaţie pentru aplicar…
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CONSIDERAȚII PRIVIND INSERȚIA PERSOANELOR CU DIZABILITĂȚI ȘI AVÂND O PREGĂTIRE INGINEREASCĂ SUPERIOARĂ, ÎN UNITĂȚI PROTEJATE AUTORIZATE DIN ROMÂNIA ÎN ANUL 2022
Dr. ing. Adrian PETRU
Lucrarea prezintă un studiu asupra informațiilor publicate de Autoritatea Națională pentru Protecția Drepturilor Persoanelor cu Dizabilități despre Unitățile Protejate Autorizate și integrarea profesională a persoanelor cu dizabilități, în special a celor cu …
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UPON ANALITICAL AND NUMERICAL CALCULUS OF THE MAIN PARAMETERS OF THE DETONATION PROCESS
Vasile NĂSTĂSESCU1,Ghiţă BÂRSAN
This paper presents some results of scientific research undertaken by the authors, regarding the numerical modeling of the detonation process, both the Finite Element Method (FEM) and the method of free particles, in version of Smoothed Particle Hydrodynamics…
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SOME ASPECTS REGARDING STRESS WAVE PROPAGATION IN TRONCONICAL SHORT BARS WITH VARIABLE ANGLE
Nicolae ILIESCU, Vasile NĂSTĂSESCU, Costică ATANASIU
In the first part of the paper an algorithm of calculus, using FEM, developed by the authors in a previous paper, is presented. This computational algorithm was applied in the study of stresses wave propagation produced by an axial impact in a tronconical sho…
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NEW RESEARCH ON COMPOSITE MATERIALS AT THE METAL FORMING RESEARCH CENTRE
Claudia GÎRJOB, Octavian BOLOGA, Gabriel RACZ, Cristina BIRIS
The Metal Forming Research Centre functions as separate research unit within "Lucian Blaga" University of Sibiu, Romania. This is one of the first centres of its kind in Romanian higher education system and emerged under the aegis of the European inter-univer…
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COMPUTING SYSTEMS MULTI-OBJECTIVE OPTIMIZATION USING DOMAIN-KNOWLEDGE
Lucian N. VINȚAN
The main aim of this short paper is to point out the advanced computing systems’ optimization research developed by The Advanced Computer Architecture and Processing Systems Research Centre (ACAPS) from “Lucian Blaga” University of Sibiu, Romania. Multi-objec…
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CONTROL AND COORDINATION OF ECONOMIC AND INTELLECTUAL ACTIVITIES BY INTEGRATED COMPLEX STRUCTURES
Constantin MARIN
This paper belongs to the category of research for the development and implementation of heterogeneous structures they apply favorable inclusion of the human factor for control and coordination of complex activities from various fields: economic, intellectual…
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STUDY REGARDING THE USE OF NEW SUSTAINABLE TEXTILE MATERIALS
Dorin VLAD, Alina Mihaela COLDEA, Diana COMAN
This paper presents a new eco-efficient way about using textile materials in order to minimize potential environmental impacts and human health. It also shows the advantages and the limitation of these materials. Because conventional textile production is one…
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INCREASING SUSTAINABILITY OF THE HOUSING STOCK BY AVOIDING DAMAGE CAUSED BY THE SOIL-STRUCTURE RESONANCE
Dinu BRATOSIN
In any dynamic system, the coincidence between natural period and excitation period (the resonance) lead to extremely large dynamic amplification. For example a linear system with damping of order 25% the dynamic amplification factor has values between d…
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POSSIBLE MEASURES OF TAKING-OVER/ DYNAMIC CONTROL OF SEISMIC ACTIONS APPLICABLE TO URBAN UTILITY SYSTEMS. SEISMIC WAVES DEFLECTION/ DAMPING USING METAMATERIALS
Bogdan UNGUREANU, Gabriela M. ATANASIU, Victoria COTOROBAI
Nowadays, an accurate seismic prediction regarding the date, location and magnitude is still a challenge, thing that implies taking into consideration efficient, preventive, seismic risk management measures, not only for civil buildings but also for urban uti…
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HIGH PERFORMANCE MAGNETIC DEVICES BASED ON NANOCRYSTALLINE MATERIALS
Andrei MARINESCU Horia GAVRILA, Ionel DUMBRAVA
During the last two decades remarkable advances occurred in the field of semiconductor devices and smart systems, by their miniaturization and performance increase. Consequently, the reduction of equipment energy consumption and dimensions has resulted. A maj…
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MAGNETIC CHARACTERISTICS OF NON-ORIENTED SILICON IRON STRIPS OBTAINED THROUGH MECHANICAL, LASER, ELECTRICAL DISCHARGE AND WATER JET CUTTING TECHNOLOGIES
Horia GAVRILĂ, Veronica MĂNESCU (PĂLTÂNEA), Gheorghe PĂLTÂNEA, Gheorghe SCUTARU, Ioan PETER
The increase of the asynchronous motors efficiency may be usually made by decreasing the total energy losses in the magnetic circuits. Non-oriented silicon iron (NO Fe-Si) sheets are soft magnetic materials with a nearly isotropic grain texture. They are used…
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DEZVOLTAREA DURABILĂ ŞI AMENAJAREA TERITORIULUI
Şerban RAICU, Dorinela COSTESCU
Cele trei componente ale dezvoltării durabile (socială, economică, ambientală) au impus acțiunilor de amenajare a teritoriului exigențe tot mai severe. Prin raportare la acestea, lucrarea relevă caracterul pluridisciplinar al analizei sistemului teritorial și…
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THE PARADIGMS OF CHEMICAL ENGINEERING
Alexandru WOINAROSCHY
It is presented the chemical engineering development, as guided by its four main paradigms: unit operations, transport phenomena, product engineering and sustainable chemical engineering. The starting point is the paradigm definition as “a set of assumptions,…
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NEARLY ZERO ENERGY BUILDING CONCEPT, ENERGY DESIGN PARADIGM FOR NEW BUILDINGS AND FOR RENOVATING EXISTING BUILDINGS
Dan CONSTANTINESCU, Gabriela CARACAŞ
The paper focuses on the new concept of Nearly Zero Energy Building – NZEB, which should lead, in time, to reducing the fossil energy consumption and to the protection of the natural and built environment. The NZEB concept, as defined by the European Directiv…
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NEW APPROACHES ON THE ENERGY STORAGE TECHNOLGIES IN ROMANIA
Ioan ȘTEFĂNESCU, Mihai VARLAM, Elena CARCADEA
Critical issues related to the availability of energy sources and their efficient use has quickly become vitally important. Population growth combined with growing demand for energy and materials in order to increase the standard of living is actually the mai…
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OSCILLATIONS OF LARGE AMPLITUDE OF A RIGID SPHERE IN A VISCOUS FLUID
Sorin BERBENTE, Corneliu BERBENTE
One considers the oscillations of large amplitude of a pendulum made of a rigid sphere suspended by a cylindrical bar articulated in a fixed point. The motion is two-dimensional and takes place in in a viscous fluid of variable density, initial at rest. The s…