Časopisy
Poslední příspěvky
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Investigation of the effect of elbow pipes of Ti6Al4V, 304 stainless steel, AZ91 materials on erosion corrosion by finite element analysis
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Corrosion is the degradation of metals caused by chemical or electrochemical reactions with their environment. As a result of these reactions, undesirable conditions occur in the physical, chemical, mechanical and electrical ... -
Optimised rotating energy-efficient clustering for wireless sensor devices by sewing training-based optimisation
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Wireless sensor networks (WSNs) have become well-known as innovative, active, and robust technology accepted in many real-world applications. Due to the power supply restrictions and the power limitations of sensors that ... -
Hydrothermal and mechanical performance of mortars containing waste brick powder
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)It is widely recognised that green building, environmental sustainability, and technical performance have recently become requirements in the field of civil engineering. For this reason, the new trend in research is to ... -
Effect of surface area on the wear properties of Al-based automotive alloy and the role of Si at eutectic level
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The efficiency of an engine material is closely correlated with its surface area. In order to investigate wear properties, effect of surface contact area as well as silicon addition at the eutectic level of Al-Cu-Mg alloy ... -
Investigation the plastic flows in the metal stamping-drawing process at the die corner
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The present investigation covers the study of the influence of metal-plastic flow on the die corner for the deformed state of the blank and energy-power parameters during stamping-drawing. The influence of workpiece size ... -
Non-homogeneity effect on the vibration of the rectangular visco-elastic plate subjected to the linear temperature effect with quadratic thickness variation in both directions
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The present work investigates the effect of non-homogeneity on the vibration of a rectangular visco-elastic plate. The plate is subjected to linear temperature variation in the x-direction with quadratic thickness variation ... -
Experimental investigation of an entropy production in a linear blade cascade
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The vortical structures in turbomachinery are crucial phenomena that significantly impact the machine’s efficiency. Therefore, investigating them is essential for a better understanding of the machine’s operation.The ... -
The load-transfer method as a tool for determining the load-displacement curve of piles
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The paper presents two applications (software packages) in which the load-transfer method is used for axially loaded Kelly drilled bored piles and displacement ductile iron piles. In the first, the ultimate friction is ... -
so(3) ⊂ su(3) revisited
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)This paper reproduces the result of Elliot, namely that the irreducible finite dimensional representation of the Lie algebra su(3) of highest weight (m, n) is decomposed according to the embedding so(3) ⊂ su(3). First, a ... -
A new structural reconfiguration for multilevel inverters with fault tolerance capability
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Keeping electrical systems running is critical in industries especially in those that rely on static converters, for example in the case of inverters, continuous and safe of operation must be ensured even if one of the ... -
An innovative iterative approach to solving Volterra integral equations of second kind
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Many scientists have shown great interest in exploring the realm of second-kind integral equations, offering many techniques for solving them, including exact, approximate, and numerical methods. This paper introduces the ... -
Numerical solution for stochastic Volterra-Fredholm integral equations with delay arguments
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)We present a method for computing the stochastic operational matrix of integration to advance the study of stochastic Volterra-Fredholm integral equations (SVFIEs) based on delay arguments. First, the method evaluates the ... -
Dowel bars – reinforcing elements of cement concrete pavements
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Our aim is to analyze the function of reinforcement elements (dowel bars) in cement concrete pavement to highlight the influence of these elements on the service life of the pavement as a whole and to find possible ... -
Tunisian engineers: protagonists of Tunisia’s modernisation. Two key moments: 1956 and 1987
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Engineers have played a key role in Tunisia’s modernisation process during and after its independence. They were crucial in almost all aspects of life. From the beginning of the reformist project, they were close to power ... -
The decimalisation of Republican time. The French Revolution which failed (1793–1795)
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)The French Revolution is rightly regarded as a major milestone in human history. Its most famous ideas of equality and freedom have endured up to the present day, but these were not the only ideas promoted during this ... -
Preface to the Special Issue of Acta Polytechnica “History of science and technology”
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024) -
Effect of preparation process on purity of tricalcium aluminate
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)In the realm of cement production, traditional fuels are steadily giving way to alternative sources. While this shift yields economic and ecological advantages, it introduces notable technological challenges. Specifically, ... -
Czechoslovak and Polish intelligence (cryptologic) services at the time of the institutionalisation of both states and their armies after 1918
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)In the course of historical development, the intelligence or cryptologic departments of individual states, usually associated with military structures, have influenced the outcomes of (military) conflicts (especially during ... -
Precipitation of oxide dispersion strength steels after long-term annealing at temperature of 475 °C
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Oxide dispersion strengthened steels are key alloys used in nuclear installations. Steels with chromium content of up to 10 wt % are suitable due to their advantageous properties and these alloys are used for the construction ... -
Transfer of master clock network technology to Czechoslovakia: Elektročas or Elektrozeit? German roots of Czechoslovak post-war timepieces 1923–1990
(České vysoké učení technické v PrazeCzech Technical University in Prague, 2024)Industrial production of timepieces began in the Czech lands as early as the end of the 19th century. Public systems providing coordinated time data (information) began to be successfully distributed on a larger scale in ...
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