Now showing items 241-260 of 15192

    • Development of a contactless sensor system to support rail track geometry on-board monitoring 

      Antognoli, Marco; Bureika, Gintautas; Kaviani, Nadia; Ricci, Stefano; Rizzetto, Luca; Skrickij, Viktor (CETRA 2020 : 6th International conference on road and rail infrastructure, 20–21 May 2021, Zagreb, Croatia: Infrastructure and vehicles: design, modelling, monitoring and condition assessment, 2021)
      This paper is focused on the ongoing research, within a work package of the Shift2Rail project Assets4Rail, related to the development of an on-board contactless sensor system able to measure the wheel's transversal position ...
    • Evaluation of the damage and implementation of separation function of geotextiles in road structure 

      Vaitkus, Audrius; Čygas, Donatas; Laurinavičius, Alfredas (Proceedings of the international conference on advanced characterisation of pavement and soil engineering materials, 20-22 June 2007, Athens, Greece. Vol. 2, 2007)
      In recent decades the road construction and reconstruction works, involving the use of geosynthetics, have increased in Lithuania. One of the geosynthetics' special functions, applied in road construction, is separation ...
    • Research to improve the process of sand spraying to the contact of a locomotive wheel with a rail 

      Bureika, Gintautas; Gorbunov, Mikola (The 4th Georgian-Polish International scientific-technical conference "Transport Bridge Europe-Asia", Tbilisi, Georgia, 8-11 October 2018 : materials, 2018)
      Wheel-rail contact is one of the critical factors in the successful operation of railways. This paper outlines previous and current scientific works carried out to investigate the tribology of the wheel/ rail contact ...
    • Experimental investigation on running smoothness of passenger car with wheel flat 

      Steišūnas, Stasys; Vaičiūnas, Gediminas; Kravchenko, Kateryna; Dižo, Ján (The 4th Georgian-Polish International scientific-technical conference "Transport Bridge Europe-Asia", Tbilisi, Georgia, 8-11 October 2018 : materials, 2018)
      The article presents the results of experimental research on a test train. The purpose of the research is to determine the vibrations of the carbody of passenger car with a wheel flat by running along the same track at ...
    • Research of methodologies for calculation of the braking distance of the train 

      Vaičiūnas, Gediminas; Steišūnas, Stasys; Nozhenko, Elena (The 4th Georgian-Polish International scientific-technical conference "Transport Bridge Europe-Asia", Tbilisi, Georgia, 8-11 October 2018 : materials, 2018)
      Most of 1520 mm railways operate locomotives manufactured in the Soviet Union, but they are replaced by new ones when the time has come. The operation of new diesel locomotives leads to the question whether the methodologies ...
    • Daugiakriterių metodų taikymas parenkant ergonominę darbo kėdę biurui 

      Šakėnaitė, Jurgita; Vinogradova-Zinkevič, Irina (Žmogaus ir gamtos sauga 2018 : 24-osios tarptautinės mokslinės-praktinės konferencijos medžiaga : [2018 m. gegužės 9-11 d.] = Human and nature safety 2018 : proceedings of the 24th international scientific-practice conference : [9–11 May 2018] / Aleksandro Stulginskio universitetas, Vytauto Didžiojo universitetas, Lietuvos mokslų akademija, 2018)
      Žmonėms, didžiąją dienos dalį praleidžiantiems prie kompiuterio, turi būti patogi ir ergonomiška darbo vieta. Nuo to, kaip įrengta darbo vieta, priklauso ne tik darbuotojų darbo našumas, produktyvumas, bet ir jų sveikata. ...
    • Research and analysis of dolomite aggregate for resistance to fragmentation 

      Šneideraitienė, Lina; Žilionienė, Daiva (Transport infrastructure and systems : proceedings of the AIIT International Congress on Transport Infrastructure and Systems (TIS 2017), Rome, Italy, 10-12 April 2017, 2017)
      Mechanical and physical properties of aggregates, used for producing asphalt mixture, influence the quality indices of pavement structure, i.e. functionality, reliability and durability. Investigation of various mechanical ...
    • Ultra-high optical responsivity of semiconducting asymmetric nano-channel diodes for photon detection 

      Akbas, Yunus Emre; Plecenik, Tomas; Ďurina, Pavol; Plecenik, Andrej; Jukna, Artūras; Wicks, Gary; Sobolewski, Roman (Proceedings of SPIE. Photon Counting Applications, Prague, Czech Republic, April 24, 2017, 2017)
      The asymmetric nano-channel diode (ANCD) is the 2-dimensional electron gas (2DEG) semiconductor nanodevice that, unlike a conventional diode, relies on the device nanostructure and field-controlled transport in a ballistic ...
    • Vibracinių apkrovų įtaka eksploatuojamų perdangos plokščių įtempimas 

      Kaminskas, Kazys Algirdas (Statybinių konstrukcijų tyrimo rezultatų įdiegimas, naujos statybinės medžiagos ir nauji pamatai Lietuvoje: respublikinės mokslinės-techninės konferencijos „Statybos mokslo laimėjimai ir jų rezultatų įdiegimas į gamybą“, įvykusios 1990 m. sausio 31 – vasario 2 d., pranešimų tezės, 1990)
    • Research of efficiency of anti-lock braking system during emergency cornering manoeuver 

      Staputis, Airidas; Žuraulis, Vidas (TRANSBALTICA XIII: Transportation Science and Technology Proceedings of the 13th International Conference TRANSBALTICA, September 15-16, 2022, Vilnius, Lithuania, 2023)
      In this paper, the efficiency of the anti-lock braking system (ABS) during an emergency braking in a turn was examined. Analysis of the paper reviews various modules and algorithms which are used in modern ABS systems, ...
    • Perdangos plokštės avarijos priežastys 

      Drobelis, V.; Šniukšta, Alvydas (Statybinių konstrukcijų tyrimo rezultatų įdiegimas, naujos statybinės medžiagos ir nauji pamatai Lietuvoje: respublikinės mokslinės-techninės konferencijos „Statybos mokslo laimėjimai ir jų rezultatų įdiegimas į gamybą“, įvykusios 1990 m. sausio 31 – vasario 2 d., pranešimų tezės, 1990)
    • Improving the energy efficiency of a vehicle by implementing an integrated system for utilizing the thermal energy of the exhaust gases of an internal combustion engine 

      Gutarevych, Yurii; Matijošius, Jonas; Trifonov, Dmitrij; Syrota, Oleksandr; Rimkus, Alfredas; Shuba, Yevhenii; Radvilaitė, Urtė (TRANSBALTICA XIII: Transportation Science and Technology. Proceedings of the 13th International Conference TRANSBALTICA, September 15-16, 2022, Vilnius, Lithuania, 2023)
      The rapid increase in the number of fossil fuel vehicles in recent decades has led to stricter standards for their environmental safety, carbon dioxide emissions and fuel efficiency. Advances in the production technologies ...
    • The effect of crumb rubber on the asphalt mixture properties 

      Šernas, Ovidijus; Vaitkus, Audrius; Kilaitė, Deimantė (CETRA 2022: 7th International conference on road and rail infrastructure, 11–13 May 2022, Pula, Croatia, 2022)
      Crumb rubber for asphalt mixture modification can be used in two ways: incorporate to bitumen (wet process) or incorporate to aggregate (dry process) mixture before adding bitumen to mixer. Wet process has some disadvantages ...
    • Perdangos plokštės iš smulkiagrūdžio betono po ilgalaike apkrova 

      Šniukšta, Alvydas; Ravnialičevas, Vladimiras; Baronas, A. (Statybinių konstrukcijų tyrimo rezultatų įdiegimas, naujos statybinės medžiagos ir nauji pamatai Lietuvoje: respublikinės mokslinės-techninės konferencijos „Statybos mokslo laimėjimai ir jų rezultatų įdiegimas į gamybą“, įvykusios 1990 m. sausio 31 – vasario 2 d., pranešimų tezės, 1990)
    • Matematikos mokymas nuotolinėse studijose 

      Chadyšas, Viktoras; Chadyšienė, Renata; Kliukas, Romualdas; Čeikienė, Nijolė (Studijos šiuolaikinėje visuomenėje 2015 : II-os tarptautinės mokslinės konferencijos pranešimų medžiaga : mokslo darbai. 2015, Nr. 2 = Studies in modern society 2015 : material of the second international scientific conference : academic papers, 2015)
      Straipsnyje detalizuojami pagrindiniai nuotolinių ir tradicinių studijų skirtumai, pristatomos priemonės, kurios gali būti naudojamos matematikos mokymui vykdant nuotolines studijas universitete. Atliktas tyrimas su realiais ...
    • Monolotinio betono vidaus ir išorės sienų vertikalių sandūrų problemos 

      Popov, Vladimir; Raslanas, Saulius; Sidaravičius, J. (Statybinių konstrukcijų tyrimo rezultatų įdiegimas, naujos statybinės medžiagos ir nauji pamatai Lietuvoje: respublikinės mokslinės-techninės konferencijos „Statybos mokslo laimėjimai ir jų rezultatų įdiegimas į gamybą“, įvykusios 1990 m. sausio 31 – vasario 2 d., pranešimų tezės, 1990)
    • Hydration and microstructure of nano modified cement paste 

      Skripkiunas, Gintautas; Karpova, Ekaterina; Drochytka, Rostislav; Hodul, Jakub (Solid state phenomena, 2021)
      Hydration of cement systems modified by nano additives requires the understanding of its mechanisms. The present research is focused on the investigation of hydration processes in cement pastes modified by multi-walled ...
    • Factors influencing the surface quality of architectural concrete 

      Tsimbalyuk, Yelizaveta; Karpova, Ekaterina; Sedova, Anastasiia; Skripkiūnas, Gintautas (Journal of Physics: Conference Series. Innovations and Technologies in Construction (BUILDINTECH BIT 2021) 9 th - 10th March 2021, Belgorod, Russia, 2021)
      Architectural concrete has wide opportunities to be used both for exteriors and interiors in different buildings. Architectural concrete is the type of concrete which is usually not subjected to finishing, therefore higher ...
    • Use of generational theory for the assessment of involvement in international electronic commerce activities 

      Černiauskaitė, Guoda; Sabaitytė, Jolanta; Leonavičienė, Edita (Challenges to national defence in contemporary geopolitical situation: CNDCGS'2020: proceedings of the 2nd international scientific conference, 14-16 October, 2020, Vilnius, Lithuania / edited by S. Bekesiene and S. Hoskova-Mayerova, 2020)
      Over the past two decades the number of Internet users around the world has incredibly increased. E-commerce is becoming a potential area for business development creating significant added value for the global economy. ...
    • Adaptation of passenger car suspension parameters to Independently rotating wheels 

      Vaičiūnas, Gediminas; Steišūnas, Stasys; Bureika, Gintautas (Transport problems 2021: XIII international scientific conference. X international symposium of young researchers: proceedings, Katowice – Silesia, 30 June – 2 July 2021, 2021)
      The article describes a study whose objective is to adjust the passenger car suspension parameters, adapting them to independently rotating wheels. The study examines the influence of corrections of stiffness and damping ...