Browsing Moksliniai ir apžvalginiai straipsniai / Research and Review Articles by LT specializations "L104 - Nauji gamybos procesai, medžiagos ir technologijos / New production processes, materials and technologies"
Now showing items 1-20 of 1915
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2-DOF small-size piezoelectric locomotion platform with the unlimited motion range
(Micromachines, 2021)This paper presents numerical and experimental investigations of a small size piezoelectric locomotion platform that provides unlimited planar motion. The platform consists of three piezoelectric bimorph plates attached ... -
2D CFD simulation of dynamic heat transfer in an open-type refrigerated display cabinet
(Applied sciences, 2022)This study uses a simplified two-dimensional time-dependent computational fluid dynamic (CFD) model to study the influence of wall shelf configuration and outtake honeycomb inclination angle on the performance of the air ... -
2D Vernier žiedinio laikinio skaitmeninio keitiklio modelis
(Mokslas – Lietuvos ateitis: Elektronika ir elektros inžinerija - 2018 = Science – future of Lithuania: Electronics and electrical engineering - 2018, 2018)Darbe aprašomas 2D Vernier žiedinio laikinio skaitmeninio keitiklio (LSK), skirto fazės detektoriui visiškai skaitmeninės struktūros dažnio sintezatoriuje, modelis, įgyvendintas vartojant VHDL aparatūros programavimo kalbą. ... -
3D finite element analysis and experimental investigations of a new type of timber beam-to-beam connection
(Engineering structures, 2015)The application of modeling approaches for timber has proven suitable for the analysis of such a type of timber beam-to-beam connection and, consequently, might be used for further optimization of this connection. -
3D karkasų, skirtų kaulų regeneracijai, mechaninių savybių tyrimas
(Mokslas - Lietuvos ateitis : Mechanika, medžiagų inžinerija, pramonės inžinerija ir vadyba = Science - future of Lithuania : Mechanics, material science, industrial engineering and management, 2016)Vienas didžiausių šiuolaikinės audinių inžinerijos iššūkių yra 3D karkasų, skirtų kaulinio audinio regeneracijai, sukūrimas. Iki šiol, norint atstatyti kaulo defektus, naudojami įvairūs kaulo pakaitalai (autogeniniai ir ... -
3DOF ultrasonic motor with two piezoelectric rings
(Sensors, 2020)A novel design of a multiple degrees of freedom (multi-DOF) piezoelectric ultrasonic motor (USM) is presented in the paper. The main idea of the motor design is to combine the magnetic sphere type rotor and two oppositely ... -
5-DOF cone-shaped piezoelectric positioning robot for optical systems
(Sensors and actuators A: Physical, 2023)The paper presents a numerical and experimental investigation of a 5-DOF piezoelectric robot that is used for angular and planar positioning of optical devices and systems. The robot has a simple design and consists of an ... -
70th anniversary of the birth of academician Edmundas Kazimieras Zavadskas
(Technological and economic development of economy, 2014)Born in Vilnius on 12 May 1944, the Academician and Professor Edmundas Kazimieras Zavadskas turned 70. He is the founder and the Editor-in-Chief of the Journal “Technological and Economic Development of Economy” (TEDE). ... -
80-dB microwave noise from an avalanche transistor circuit
(Elektronika ir elektrotechnika, 2015)Extremely high ‘excess noise ratio’ of 80 dB is observed from an avalanche transistor circuit, operating in a random pulse mode. Broadband noise spectrum measured from 30 MHz to 1 GHz exhibits good flatness with the ... -
A 3.0 – 3.6 GHz LC-VCO with ETSPC Frequency Divider in 0.18-micron CMOS technology
(Informacije MIDEM - Journal of Microelectronics, Electronic Components and Materials, 2016)This paper proposes the design, implementation, and measurement of a fully integrated voltage controlled oscillator (VCO) and frequency divider for multi-band transceivers in 0.18-micron IBM 7RF CMOS technology. The VCO ... -
A bender’s algorithm of decomposition used for the parallel machine problem of robotic cell
(Mathematics, 2021)The present research addresses the single transportation robot used to alleviate problems of robotic cell scheduling of the machines. For the purpose of minimizing the make-span, a model of mixed-integer linear programming ... -
A bi-objective model for scheduling construction projects using critical chain method and interval-valued fuzzy sets
(Buildings: Intelligent Multi-Criteria Decision-Making Methodologies in Building and Construction Management, 2022)Numerous constraints affect construction projects, and lack of management may lead to schedule deviation. In the execution phase of the project, due to the lack of timely access to the required resources and the existence ... -
A bibliometric analysis of Symmetry (2009–2019)
(Symmetry, 2020)Symmetry is an international journal in the research fields of physics, chemistry, biology, mathematics, computer science, theory and methods, and other scientific disciplines and engineering. The first paper was published ... -
A case study on the assessment of chemical and physical pollution levels during the copying process
(Sustainability: Job Design for Human and Organisational Sustainability in the Context of Emerging Technologies, 2022)In accordance with sustainable development goals (SDG’s), urgent action should be taken to make the societal and natural environments better for human beings. People spend most of their time indoors, therefore growing ... -
A compact higher-order finite-difference scheme for the wave equation can be strongly non-dissipative on non-uniform meshes
(Applied mathematics letters, 2021)We study necessary conditions for stability of a Numerov-type compact higher-order finite-difference scheme for the 1D homogeneous wave equation in the case of non-uniform spatial meshes. We first show that the uniform in ... -
A comparative analysis of the rank reversal phenomenon in the EDAS and TOPSIS methods
(Economic computation and economic cybernetics studies and research, 2018)The rank reversal (RR) phenomenon could occur when new information about alternatives or criteria is added to the decision space of a discrete multi-criteria decision-making (MCDM) problem. If this addition leads to a ... -
A comparative assessment of the suitability of phosphogypsum from different origins to be utilised as the binding material of construction products
(Journal of building engineering, 2021)Phosphogypsum (PG) is a by-product with an enormous potential to be used in construction products as a binding material. However, the performed studies are often focused on narrow aspects regarding its properties, and ... -
A component method for cold-formed steel beam-to-column bolted gusset plate joints
(Thin-Walled Structures, 2018)Cold-formed steel elements are being used more frequently on construction sites because of the good strength-to-cost ratio. Researches on such structures show that, in most cases, the behaviour of the constitutive joints ... -
A computer model designed to evaluate the firefighting effectiveness of solid jet produced by water nozzle
(Journal of civil engineering and management, 2018)The paper begins with a brief introduction and review of international research in the area of water jet streams and their effectiveness in firefighting. Then a general concept of a new numerical model for firefighting ... -
A cylinder-type multimodal traveling wave piezoelectric actuator
(Applied sciences, 2020)Numerical and experimental investigations of a multimodal piezoelectric traveling wave actuator are presented. The actuator consists of a cylindrical stator with a conical hole and piezoceramic rings that are located at ...