Search results for: gaussian beams

• Thermal self-action effects of acoustic beam in a vibrationally relaxing gas

  Publication

  • A. Perelomova

  - APPLIED MATHEMATICAL MODELLING - Year 2014

  Thermal self-action of acoustic beam in a molecular gas with excited internal degrees of molecules’ freedom, is studied. This kind of thermal self-action differs from that in a Newtonian fluid. Heating or cooling of a medium takes place due to transfer of internal vibrational energy. Equilibrium and non-equilibrium gases, which may be acoustically active, are considered. A beam in an acoustically active gas is self-focusing unlike...

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• Direction-of-Arrival Estimation Using an ESPAR Antenna with Simplified Beam Steering

  Publication

  • Ł. Kulas

  - Year 2017

  In this paper, it has been shown, how electronically steerable parasitic array radiator (ESPAR) antenna, in which beam steering is done in a simple way, can be used for directionof- arrival (DoA) estimation of an unknown signal impinging the antenna. The concept is based on an ESPAR antenna having twelve parasitic elements, in which beam switching is realized by RF switches providing required loads to its parasitic elements. Numerical...

• Detection and Imaging of Debonding in Adhesive Joints of Concrete Beams Strengthened with Steel Plates Using Guided Waves and Weighted Root Mean Square

  Publication

  • E. Wojtczak
  • M. Rucka
  • M. Knak

  - Materials - Year 2020

  Strengthening of engineering structures is an important issue, especially for elements subjected to variable loads. In the case of concrete beams or slabs, one of the most popular approaches assumes mounting an external reinforcement in the form of steel or composite elements by structural adhesives. A significant disadvantage of adhesive joints is the lack of access to the adhesive film for visual condition assessment, thus, there...

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• Comparative study on fracture evolution in steel fibre and bar reinforced concrete beams using acoustic emission and digital image correlation techniques

  Publication

  • S. Ashraf
  • M. Rucka

  - Case Studies in Construction Materials - Year 2024

  In recent decades, the demand for sustainable construction practices has increased, but raw materials such as reinforcing steel remain scarce. Therefore, steel fibres have emerged as a popular and sustainable choice in the construction industry, offering a cost-effective alternative to traditional steel bar reinforcement for both flatwork and elevated structures. The purpose of this study is therefore to compare the performance...

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• Microcrack monitoring and fracture evolution of polyolefin and steel fibre concrete beams using integrated acoustic emission and digital image correlation techniques

  Publication

  • S. Ashraf
  • M. Rucka

  - CONSTRUCTION AND BUILDING MATERIALS - Year 2023

  The use of polymer and steel fibres in plain concrete appears to be an excellent solution for limiting crack propagation and improving the post-ductility performance of concrete structures. Based on this premise, this study investigated the fracture evolution of polyolefin fibre-reinforced concrete (PFRC) and steel fibre-reinforced concrete (SFRC) specimens through the integrated application of two diagnostic techniques, acoustic...

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• FE analysis of size effects in reinforced concrete beams without shear reinforcement based on stochastic elasto-plasticity with non-local softening.

  Publication

  • E. Korol
  • J. Tejchman
  • Z. Mróz

  - FINITE ELEMENTS IN ANALYSIS AND DESIGN - Year 2014

  W artykule przedstawiono wyniki analizy MES dotyczącej deterministycznego i statystycznego efektu skali w żelbetowych belkach bez zbrojenia na ścinanie. W analizie zastosowano prawo sprężysto-plastyczne z nielokalnym osłabieniem. Wyniki analizy porównano z doświadczeniami i modelem skali Bazanta.

• Aktywne zajęcia z wykorzystaniem narzędzia Microsoft Teams

  Events

  09-02-2024 09:00 - 09-02-2024 12:00

  Celem szkolenia jest poznanie możliwości aplikacji Microsoft Teams do aktywizacji studentów i wspólna praca nad funkcjami wspomagającymi studentów w procesie uczenia się i organizacji pracy podczas zajęć oraz poza nimi.

• O projekcie polsko-rosyjskiego słownika pokrewieństwa zbiorów homonimiki leksemowej [On a Polish-Russian dictionary of the lexical homonyms]

  Publication

  • K. Wojan

  - Przegląd Rusycystyczny - Year 2005

• Rosyjskie przekłady Adama Mickiewicza – aspekt bibliograficzny [Russian Translations of Adam Mickiewicz’s Literary Works – A Bibliographic Aspect]

  Publication

  • K. Wojan

  - Year 2020

• Russian Studies in Literature

  Journals

  ISSN: 1061-1975 , eISSN: 1944-7167

• RUSSIAN JOURNAL OF HERPETOLOGY

  Journals

  ISSN: 1026-2296

• Russian Psychological Journal

  Journals

  ISSN: 1812-1853 , eISSN: 2411-5789

• Biophysics (Russian Federation)

  Journals

  ISSN: 0006-3509

• Russian Law Journal

  Journals

  ISSN: 2309-8678 , eISSN: 2312-3605

• Russian Journal of Communication

  Journals

  ISSN: 1940-9419

• Russian Engineering Research

  Journals

  ISSN: 1068-798X

• Iberoamerica (Russian Federation)

  Journals

  ISSN: 2075-9711

• RUSSIAN JOURNAL OF THERIOLOGY

  Journals

  ISSN: 1682-3559

• Russian Journal of Criminology

  Journals

  ISSN: 2500-4255 , eISSN: 2500-1442

• RUSSIAN STUDIES IN PHILOSOPHY

  Journals

  ISSN: 1061-1967 , eISSN: 1558-0431

• Woman in Russian Society

  Journals

  ISSN: 1992-2892

• Russian Entomological Journal

  Journals

  ISSN: 0132-8069

• Russian Journal of Biopharmaceuticals

  Journals

  ISSN: 2073-8099

• Russian Journal of Neurosurgery

  Journals

  ISSN: 1683-3295 , eISSN: 2587-7569

• Russian Journal of Allergy

  Journals

  ISSN: 1810-8830 , eISSN: 2686-682X

• Russian Language Studies

  Journals

  ISSN: 2618-8163 , eISSN: 2618-8171

• Russian Journal of Economics

  Journals

  ISSN: 2618-7213 , eISSN: 2405-4739

• Russian Neurological Journal

  Journals

  ISSN: 2658-7947 , eISSN: 2686-7192

• Russian Peasant Studies

  Journals

  ISSN: 2500-1809

• Russian Journal of Pain

  Journals

  ISSN: 2219-5297 , eISSN: 2618-9860

• Russian Journal of Linguistics

  Journals

  ISSN: 2687-0088 , eISSN: 2686-8024

• RUSSIAN JOURNAL OF NEMATOLOGY

  Journals

  ISSN: 0869-6918

• RUSSIAN MATHEMATICAL SURVEYS

  Journals

  ISSN: 0036-0279 , eISSN: 1468-4829

• RUSSIAN JOURNAL OF ECOLOGY

  Journals

  ISSN: 1067-4136 , eISSN: 1608-3334

• Russian Journal of Cardiology

  Journals

  ISSN: 1560-4071

• Russian Education and Society

  Journals

  ISSN: 1060-9393

• Russian Geology and Geophysics

  Journals

  ISSN: 1068-7971 , eISSN: 1878-030X

• Russian Physics Journal

  Journals

  ISSN: 1064-8887 , eISSN: 1573-9228

• RUSSIAN CHEMICAL BULLETIN

  Journals

  ISSN: 1066-5285 , eISSN: 1573-9171

• Russian Meteorology and Hydrology

  Journals

  ISSN: 1068-3739 , eISSN: 1934-8096

• RUSSIAN POLITICS AND LAW

  Journals

  ISSN: 1061-1940

• Diversity and ethics in trauma and acute care surgery teams: results from an international survey

  Publication

  • L. Cobianchi
  • F. Dal
  • M. Massaro
  • W. Biffl
  • F. Catena
  • F. Coccolini
  • B. Dionigi
  • P. Dionigi
  • S. Di
  • P. Fugazzola... and 273 others

  - World Journal of Emergency Surgery - Year 2022

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• Overcoming Challenges of Virtual Scrum Teams: Lessons Learned Through an Action Research Study

  Publication

  • J. Babło
  • B. Marcinkowski
  • A. Przybyłek

  - Year 2023

  After the COVID-19 breakout, agile teams found themselves in situations that “pure agilists” and textbooks on agile methods had preferred to ignore. Whereas agile mindsets helped them to quickly shift to remote work, mere virtualization of agile practices often proved insufficient, and several challenges emerged. This paper reports on an Action Research project carried out in Lufthansa Systems Poland with the aim of (1) revisiting...

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• Remote communication in Scrum teams - a COVID-19 preventive measure or work time optimisation?

  Publication

  • K. Brodnicki

  - e-mentor - Year 2021

  The article presents the impact of remote work, resulting from the COVID-19 pandemic, on the functioning of Scrum teams. Attempts have been made to analyse the positive and negative aspects of remote work. The article also looks at the impact of remote work on the level of communication and efficiency of Scrum teams. For this purpose, the author conducted research on a sample of 40 organisations that declared to use Scrum methodology,...

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• Tacit Knowledge Sharing and Personal Branding. How to Derive Innovation From Project Teams?

  Publication

  • W. Kucharska
  • J. Dąbrowski

  - Year 2016

  Innovation, relationships, cooperation, and knowledge are key factors which determine a competitive advantage in the networked economy. A network serves as a contemporary form of market process coordination. Network economy, according to the idea of prosumerism, is founded on collaboration of individual creators based on a network of values instead of hierarchical dependencies. Another feature of a network is that it imposes symmetry...

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• Role patterns in IT projects teams - design of a selection module using fuzzy logic techniques

  Publication

  • I. Bach-Dąbrowska

  - Foundations of Management - Year 2013

  Presented paper introduces an approach based on usage of role patterns and modelling by the use of fuzzy logic tool for selection process with limitation to the area of IT projects environment. The article shows a concept of role patterns structures and their further usage in process of forming a fuzzy model dedicated to candidate assessment process support

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• Synergistic catalysis of Fe3O4/CuO bimetallic catalyst derived from Prussian blue analogues for the efficient decomposition of various organic pollutants

  Publication

  • N. Akram
  • W. Ma
  • J. Guo
  • Y. Guo
  • Z. Yansong
  • A. Hassan
  • J. Wang

  - CHEMICAL PHYSICS - Year 2021

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• Badania eksperymentalne strefy przypodporowej żelbetowych belek częściowo sprężonych

  Publication

  • J. Sokołowski

  - Year 2010

  This project refers to the study the shear zone, under full and partial prestressing in comparison to beams with passive reinforcement.For comparison, variable parameters have been determined:- a/d (from 1,5 to 3,5) - it's shear span to effective depth of the beam . Assuming constant geometrical quantities, "a" is variable.- 26 beams had no vertical shear reinforcement, and the other 26 had closed stirrups.- prestressing intensity...

• Influence of Parameters of Laser Beam Welding on Structure of 2205 Duplex Stainless Steel

  Publication

  • M. Landowski

  - Advances in Materials Science - Year 2019

  Laser welding is used in modern industry, having many advantages comparing to traditional welding technologies. Nowadays, industry sectors such as shipbuilding, automotive and aviation can’t be imagined without laser processing technologies. Possibility of increase of welded joint properties, autogenous welding and high level of process automation makes the technology of laser welding perspective part of the industry. Physical...

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• Structural and mechanical properties of hydroxyapatite coatings formed by ion-beam assisted deposition

  Publication

  • A. Zykova
  • V. Safanov
  • S. Dudin
  • S. Yakovin
  • N. Donkov
  • M. H. Ghaemi
  • M. Szkodo
  • M. Antoszkiewicz
  • M. Szyfelbain
  • A. Czaban

  - Journal of Physics : Conference Series - Year 2018

  The ion-beam assisted deposition (IBAD) is an advanced method capable of producing crystalline coatings at low temperatures. We determined the characteristics of hydroxyapatite Ca10(PO4)6(OH)2 target and coatings formed by IBAD using X-ray photoemission spectroscopy (XPS), X-ray diffraction (XRD), scanning electron microscopy (SEM), atomic force microscopy (AFM) and energy dispersive X-ray (EDX). The composition of the coatings'...

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