Prohlížení Acta Polytechnica dle názvu
Zobrazují se záznamy 11-30 z 880
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A Comparison of Power Quality Controllers
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper focuses on certain types of FACTS (Flexibile AC Transmission System) controllers, which can be used for improving the power quality at the point of connection with the power network. It focuses on types of ... -
A COMPARISON OF THE TENSILE STRENGTH OF PLASTIC PARTS PRODUCED BY A FUSED DEPOSITION MODELING DEVICE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)Rapid Prototyping systems are nowadays increasingly used in many areas of industry, not only for producing design models but also for producing parts for final use. We need to know the properties of these parts. When we ... -
A COMPARISON OF TWO MODAL ANALYSIS METHODS: AN IMPACT HAMMER VERSUS LASER VIBROMETRY
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2020)This paper presents a comparative experimental-analytical study on the performance of Multi-Input Single-Output (MISO) and Single-Input Multi-Output (SIMO) techniques to identify the modal properties of a cantilever beam. ... -
A COMPUTER CLUSTER SYSTEM FOR PSEUDO-PARALLEL EXECUTION OF GEANT4 SERIAL APPLICATION
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Simulation of the interactions between particles and matter in studies for developing X-rays detectors generally requires very long calculation times (up to several days or weeks). These times are often a serious limitation ... -
A CONCEPTUAL STUDY OF A LIQUID METAL ALLOY IN A DISK-SHAPED MAGNETOHYDRODYNAMICS CONVERSION SYSTEM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2021)The use of solar-heated liquid metal in a magnetohydrodynamics (MHD) generator provides an alternative and direct conversion method for electric power generation. This prompted the present study to conduct a three-dimensional ... -
A DIFFERENTIAL INTEGRABILITY CONDITION FOR TWO-DIMENSIONAL HAMILTONIAN SYSTEMS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)We review, restate, and prove a result due to Kaushal and Korsch [Phys. Lett. A 276, 47 (2000)] on the complete integrability of two-dimensional Hamiltonian systems whose Hamiltonian satisfies a set of four linear second ... -
A Flexible Adjustment and Control System for Hydraulic Machines
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Due to the advantages of hydraulic systems with variable displacement, it was necessary to design a control system that can adjust the pressure, flow, power or a combination of these features, that can be easily integrated ... -
A HARDWARE-IN-THE-LOOP SIMULATOR BASED ON REAL SKODA SUPERB VEHICLE AND RT-LAB/CARSIM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2015)This paper describes the design and realization of a hardware-in-the-loop simulator made from a real Skoda Superb vehicle. A combination of RT-LAB and CarSim software is used for real-time control and for handling the ... -
A LIGHTNING CONDUCTOR MONITORING SYSTEM BASED ON A WIRELESS SENSOR NETWORK
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2013)Automated heating, lighting and irrigation systems are nowadays standard features of industrial and commercial buildings, and are also increasingly found in ordinary housing. In addition to the benefits of user comfort, ... -
A MATHEMATICAL MODEL OF GALVANIC CORROSION UNDER THE CONDITIONS OF A THIN ELECTROLYTE FILM
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)A mathematical model of galvanic corrosion under the conditions of a thin electrolyte film was used to evaluate atmospheric corrosion. Experimentally determined weight loss values were used to validate the modelled results. ... -
A METHOD FOR EVALUATION OF NON-UNIFORM RADIANT-CONVECTIVE LOAD ON HUMAN BODY DURING MENTAL WORK
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2017)The objective of this study was to develop a documentation for the amendment of the microclimatic part of the Czech Government Regulation, particularly in a non-uniform radiant-convective load evaluation. Changes in ... -
A METHOD FOR MEASURING THE SENSITIVITY OF BUILDING STRUCTURAL MEMBERS TO FIRE DECAY PHASES
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2016)Firefighters face a major threat when intervening in a building during a fire: the possibility of structural collapse during the cooling phase of the fire, or soon thereafter. At present, this threat is amplified by the ... -
A METHOD OF COMPLEX CALCULATION OF RATIONAL STRUCTURAL PARAMETERS OF RAILWAY HUMPS
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2018)The article deals with a method of complex calculation of rational structural parameters of humps at classification yards. Unlike existing methods, this method allows an implementation of the technology of guided gravity ... -
A Micromechanics-Based Model for Stiffness and Strength Estimation of Cocciopesto Mortars
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)The purpose of this paper is to propose an inexpensive micromechanics-based scheme for stiffness homogenization and strength estimation of mortars containing crushed bricks, known as cocciopesto. The model utilizes the ... -
A mindlin shell finite element for stone masonry bridges with backfill
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)Stone masonry bridges are difficult to analyse with commercial finite element (FE) packages for their specific heterogeneous composition. The stone arch is best modelled as a thick shell where there are predestined directions ... -
A model of isotope transport in the unsaturated zone, case study
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2022)This work deals with a groundwater flow and solute transport model in the near-surface (predominantly unsaturated) zone. The model is implemented so that it allows simulations of contamination transport from a source located ... -
A MULTIPHASE FLOW LOOP DESIGN FOR INVESTIGATING THE PARTIAL PHASE SEPARATION IN A PIPE TEE
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2019)This article presents a design and commissioning of a multiphase flow loop, which was developed for scrutinizing the partial phase separation characteristics of pipe Tees. Its length is 9m and its primary diameter is 0.078m ... -
A MYOELECTRIC PROSTHETIC ARM CONTROLLED BY A SENSOR-ACTUATOR LOOP
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2014)This paper describes new methods and systems designed for application in upper extremity prostheses. An artificial upper limb with this system is a robot arm controlled by EMG signals and a set of sensors. The new multi-sensor ... -
A Network Simulation Tool for Task Scheduling
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)Distributed computing may be looked at from many points of view. Task scheduling is the viewpoint, where a distributed application can be described as a Directed Acyclic Graph and every node of the graph is executed ... -
A Neural Network Model for Predicting NOx at the Mělník 1
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2012)This paper presents a non-conventional dynamic neural network that was designed for real time prediction of NOx at the coal powder power plant Mělnik 1, and results on real data are shown and discussed. The paper also ...