Now showing items 41-60 of 3736

    • A study of metal-cement composites with additives 

      Mironovs, Viktors; Pundienė, Ina; Tatarinov, Alexey; Baroninsh, Janis (Construction science : scientific journal of RTU, 2014)
      The application of small-sized metal fillers (SMF) provides a combination of high bulk density, increased durability and ferromagnetic properties of composite materials on the cement basis. However, the total strength of ...
    • A study on analytical T-stub prying models for RHS joints in tension 

      Mudrov, Andrej; Šaučiuvėnas, Gintas; Šapalas, Antanas (Engineering structures and technologies, 2019)
      The article investigates analytical models for calculation of tension capacity of axially-loaded RHS end-plate joints bolted along two and four sides of the tube in order to investigate the phenomena of prying. Design of ...
    • A survey of some Italian literature works using sentiment analysis 

      Pavan, Luca (International journal of linguistics, literature and translation, 2022)
      The article describes the use of software, written by the author, to analyze some Italian literature works from the last century by using sentiment analysis. The software is lexicon-based, with a sentiment Italian dictionary ...
    • A survey on methods for reconstructing surfaces from unorganized point sets 

      Matiukas, Vilius (Mokslas – Lietuvos ateitis = Science – future of Lithuania: elektronika ir elektrotechnika = Electronics and electrical engineering, 2011)
      This paper addresses the issue of reconstructing and visualizing surfaces from unorganized point sets. These can he acquired using different techniques, such as 3D-lascr scanning, computerized tomography, magnetic resonance ...
    • A systematic review of information modelling of individual residential buildings 

      Kalibatas, Darius; Kalibatienė, Diana; Kaplinski, Oleg (Engineering structures and technologies, 2018)
      Rapidly growing building information modelling (BIM) in construction offers a number of advantages and new opportunities of improving efficiency and effectiveness of the construction process and enhancing the use of emerging ...
    • A systematic review of methods for business knowledge extraction from existing software systems 

      Normantas, Kęstutis; Vasilecas, Olegas (Baltic Journal of Modern Computing (BJMC), 2013)
      Software maintenance and evolutions often result in large cost overruns and delayed delivery of required changes or improvements. As numerous studies have shown, adopting software to meet ever-changing business needs ...
    • A systematic theoretical review on sustainable management for green competitiveness 

      Nassar, Nour; Tvaronavičienė, Manuela (Insights into regional development, 2021)
      Sustainable management for green competitiveness has been mentioned in the lasting researches based on various theories as to the transition theory, social responsibility theory (CSR), sustainable supply chain management ...
    • A weighted universality theorem for the Hurwitz zeta-function 

      Balčiūnas, Aidas; Vadeikis, Gediminas (Šiauliai mathematical seminar, 2017)
    • Abandoned land classification using classical theory method 

      Sužiedelytė Visockienė, Jūratė; Tumelienė, Eglė (Baltic surveying: international scientific journal, 2019)
      According to the official statistics the areas of abandoned agricultural land in Lithuania are gradually decreasing, but very slightly. The aim of this study is to research spatial determination and abandoned land ...
    • Absoliučiai tamprios nesvarios stygos netiesiniai svyravimai. Asimptotikų konstravimas 

      Krylovas, Aleksandras; Miškinis, Paulius (Lietuvos matematikos rinkinys, 2007)
      Nagrinėjamas stygos netiesinių svyravimų matematinis modelis. Uždavinio asimptotiniam sprendiniui rasti konstruojama suvidurkintoji integralinių diferencialinių lygčių sistema.
    • Absorption of energy exploitation during impact of aircraft 

      Žiliukas, Antanas; Fiodorova, Nina (Aviation : research Journal of Vilnius Gediminas Technical University, 2004)
      The article shows the variation of stopping distance as a function of deceleration and velocity change derived from the standard Newtonian equations for assumed constant acceleration. Note that the time to stop is equal ...
    • Accelerating early strength development of concrete using metakaolin as an admixture 

      Bai, Jiping; Wild, Stan; Gailius, Albinas (Medžiagotyra, 2004)
      A study of metakaolin (MK) as an early strenght accelerator for Portland cement (PC) and Portland Cement-Pulverised Fuel Ash (PFA) concrete (PC-PFA) has been carried out. This paper reports strenght development, particularly ...
    • Accounting productivity in the sectors of economy: methodological aspects 

      Lankauskienė, Toma (Entrepreneurship and sustainability issues, 2014)
      Level of productivity is vital for each country striving develop sustainably. It appears that accounting of productivity requires additional attention of scientists. This paper is focused on the methods allowing to evaluate ...
    • Accumulation of heavy metals in short-rotation willow 

      Baltrėnas, Pranas; Bolutienė, Violeta (Ekologija, 2009)
      The article draws on the possibilities of using short-rotation coppices for removing heavy metals (Zn, Cu, Pb, Mn, Ni and Cr) from fermented waste fi ltrate or from soil by phytoremediation. The aim of the study was to ...
    • Accumulation of heavy metals in tree seedlings from soil amended with sewage sludge 

      Butkus, Donatas; Baltrėnaitė-Gedienė, Edita (Ekologija, 2007)
      Interaction between plants and heavy metals (HM) is based on the ability of plants to either accumulate HMs or be resistant to huge amounts of HM in soil. Trees, due to their high biomass and long vegetation, are attractive ...
    • Accumulation of radioisotopes associated with the presence of wood-inhabiting fungi in scots pine (Pinus sylvestris L.) wood 

      Butkus, Donatas; Matelis, Antanas; Pliopaitė Bataitienė, Ingrida (Ekologija, 2007)
      Growth of trees depends on the climatic conditions, environmental pollution and presence of wood-inhabiting fungi. Especial effect is caused by radioactive contamination. Radionuclides not only accumulate in plants, they ...
    • Accumulation particularities of 90Sr and 137Cs radionuclides in different fish groups 

      Bolutienė, Violeta; Idzelis, Raimondas Leopoldas; Kesminas, Vytautas; Ladygienė, Rima (Ekologija, 2007)
      Radionuclide accumulation in settled and migratory fish caught in Lithuanian lakes and rivers was analysed. Migratory fish were found to accumulate radionuclides in muscles (53–63%) and bones (33–42%), mainly from food. ...
    • Accuracy analysis of design methods for concrete beams reinforced with fiber reinforced polymer bars 

      Timinskas, Edgaras; Jakštaitė, Rūta; Gribniak, Viktor; Tamulėnas, Vytautas; Kaklauskas, Gintaris (Engineering structures and technologies = Statybinės konstrukcijos ir technologijos, 2013)
      Traditional steel reinforcement does not resist corrosion and its resources are limited; therefore, carbon, glass, aramid and basalt fibre reinforced polymer bars were developed. The composite reinforcement has a high ...
    • Accuracy calibration of the bars of levelling meters 

      Giniotis, Vytautas; Rekus, Donatas; Aksamitauskas, Vladislovas Česlovas (Geodezija ir kartografija = Geodesy and cartography / Vilniaus Gedimino technikos universitetas, 2007)
      Precision levelling is one of the most common geodetic measuring operations. The most modern geodetic instruments are quite sophisticated digital instruments that are supplied by photoelectric sensor arrays and optical–electronic ...
    • Accuracy of Euler’s γ expansion without logarithm 

      Mačys, Juozas Juvencijus; Banys, Rimas (Lietuvos matematikos rinkinys : Lietuvos matematikų draugijos darbai. Serija A, 2014)
      The rational approximations for the Euler–Mascheroni constant γ using the Euler asymptotic expansion are obtained. The errors of approximations are evaluated. The numerical computations reflect the accuracy of the approximations.