Publikační činnost ČVUT
Zobrazují se záznamy 101-120 z 1342
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THE SPECTRUM OF TRIANGLE-FREE GRAPHS
(SIAM, 2023)Denote by q_n(G) the smallest eigenvalue of the signless Laplacian matrix of an n vertex graph G. Brandt conjectured in 1997 that for regular triangle-free graphs q_n(G)<= 4n/25. We prove a stronger result: If G is a ... -
Effective feed rate control to maintain constant feed per tooth along toolpaths for milling complex-shaped parts
(Springer, 2023)Constantly increasing demands for accuracy, surface quality, and higher production productivity associated with machining time reduction, all of which are to be achieved together with a cost-savings demand, create room for ... -
Enhancing Performance of Fluxgate Sensors Using Annealed Nanocrystalline Core
(IEEE, 2023)The magnetic core is one of the most important parts of a fluxgate sensor. This article presents a study of fluxgate sensors with a core based on nanocrystalline Fe73.5Cu1Nb3Si13.5B9 wire and compares their performance to ... -
Rectangular Busbar With Circular Sensing Part for Wideband Current Measurement
(IEEE, 2023)A simple, reliable, and novel busbar sensing configuration for frequency-independent current measurement is presented in this article. Yokeless current transducers using arrays of magnetic sensors around a rectangular ... -
Effect of external DC field on current transformers with amorphous and nanocrystalline cores
(Elsevier, 2022)Nanocrystalline and amorphous stress-annealed and field annealed tapes are used for cores of DC-tolerant current transformers. We analyze the influence of external DC field of arbitrary direction on the performance of these ... -
Hromadný otevřený online kurz „Význam radiochemie pro naši společnost“
(Česká společnost chemická, 2023)Hromadný otevřený online kurz „Essential radiochemistry for society“ představuje moderní formu vzdělávání. Díky poutavému designu, pestrému obsahu a interaktivnímu charakteru má potenciál oslovit různé zájmové skupiny. ... -
Estimation of Machine Tool Accuracy Based on Monte Carlo Simulation Using Movement Axes Geometric Errors Model
(MM Science Journal, 2023)Accuracy is one of the most important feature of a machine tool. Being able to estimate the overall accuracy of a machine tool represented by the total volumetric error can be a huge advantage in the design process. This ... -
Modification of the 5-axis Toolpath to Increase the Turbine Hub Surface Quality
(MM Science Journal, 2023)This industrial article focuses on the finishing machining of workpieces made of aluminium alloy EN AW 7075 with a freeform shape, utilizing minimal material stocks. These workpieces are widely used in sectors like aviation ... -
Simulation of Feedforward Control Techniques to Improve Machines Feed Drives Tracking Performance
(MM Science Journal, 2023)High speed machines such as laser cutting machines should realize movements with high accelerations. Dynamical limitations of the feed drives are typically related to the bandwidth of the control loops and the excitation ... -
Recenzovaný sborník příspěvků z 21. odborné konference z cyklu Integrované inženýrství v řízení průmyslových podniků na téma Inteligentní výrobní systémy a jejich management
(Czech Technical University in Prague, 2021) -
Critical assessment of large-scale rooftop photovoltaics deployment in the global urban environment
(Pergamon-Elsevier Science Ltd, 2024)In support of the clean energy transition, rooftop photovoltaics (RTPV) deployment has been globally advocated, enabling citizens as energy prosumers within their localised building environment. However, the effectiveness ... -
Automatic Placer for Analog Circuits Using Integer Linear Programming Warm Started by Graph Drawing
(Science and Technology Publications, Lda, 2023)Due to its diversity, the physical design of the Analog and Mixed-Signal Integrated Circuits is not as automated as the physical design of digital Integrated Circuits. The placement process is one of the critical steps of ... -
Linearization and computation for large-strain visco-elasticity
(AIMS Press, 2022)Time-discrete numerical minimization schemes for simple visco-elastic materials in the Kelvin-Voigt rheology at high strains are not well posed because of the non-quasi-convexity of the dissipation functional. A possible ... -
Seasonal variations of vegetative indices and their correlation with evapotranspiration and soil water storage in a small agricultural catchment
(Česká akademie zemědělských věd, 2023)A precise measurement of evapotranspiration (ET) and soil water storage (SWS) is necessary for crop management and understanding hydrological processes in agricultural catchments. In this study, we extracted the vegetative ... -
Performance of the complex spillway structure after gate replacement - physical modelling
(CRC Press/Balkema, 2019)The recently applied stricter demands on the safety of dams as well as on their operation resulted in the design of adjustments, enhancements and reconstructions of many spillways on large dams in the Czech Republic. The ... -
Preparation of the Mělčany dry reservoir project
(CRC Press/Balkema, 2019)The plans for the realization of the reservoir in the Mělčany profile (in the Czech Republic) have existed since the 1920s. The paper introduces the history and development of the water management concept of the reservoir, ... -
Simulation Environment for Validation of Automated Lane-Keeping System
(IARIA, 2023)Automated Driving Systems (ADS) need to be validated in a wide range of conditions to ensure the safety of their operation. It is impossible to validate everything in a real environment, and simulation is the only viable ... -
Existing Shaft Spillway Enhancement Based on Physical Modelling
(South African National Committee on Large Dams (SANCOLD), 2016)The paper is focused on application of physical and mathematical modelling for the design of measures which either increase the capacity of the spillway and following outlet structures or improve the stability of the ... -
The effects of accelerometer sensor position on freezing gait ratio parameters
(Elsevier, 2023)Freezing of gait (FoG) is an episodic gait pattern characterised by the inability to step that occurs on initiation or turning while walking for those with Parkinson’s disease (PD). This phenomenon is one of the most ...