Iskanje po katalogu digitalne knjižnice

Opis: Even though autonomous cars have not yet crossed into the mainstream car market, their adoption seems inevitable, but not much is known about the purchasing intention of ACs and potential influences on it. To better understand the influences of various factors on purchasing intentions of autonomous cars, research using bibliometrics, an online survey and SEM modelling was performed. Based on an analysis of previous research work and the unified theory of acceptance of technology, an empirical model was produced and tested using data obtained from an online survey involving 266 individuals. The goal was to analyse which characteristics of autonomous cars, socio-demographic variables of potential buyers, and buyers' personal and social characteristics could potentially influence the adoption of autonomous cars. The results show that factors of car safety, buyer age and level of education, perceived social influence, anxiety and performance expectancy are significantly correlated to purchasing intention of ACs, while correlations with other factors to purchasing intentions have not been proven.
Ključne besede: autonomous cars, purchase intention, autonomous car adoption, SEM modelling, road transport, logistics
Objavljeno v DKUM: 24.12.2024; Ogledov: 0; Prenosov: 2
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Ključne besede: oskrbovalne verige, upravljanje, načrtovanje, transport, logistika, visokošolski učbeniki
Objavljeno v DKUM: 13.12.2024; Ogledov: 0; Prenosov: 13
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Opis: A new approach for spatial modelling of transport mode choice is presented in the paper. The approach tackles the problem by considering the trade-off between subjective and objective factors. To obtain mode Preference Rates (PRs) based on subjective factors, the Analytic Hierarchy Process (AHP) method is applied. The objective factors are expressed with the journey time from any point in the map to destination according to the available transport mode choice on the specific connection. The results are presented as PRs of individual transport modes. The model is validated on the con-ducted the survey, with students of Vienna University of Economics and Business (WU) as a target audience. Members of different target groups (age, national, employment) decide differently regarding the transport choice, so it is better to analyse them separately. The presented model can be used for the city transport planning in any urban area. It can help promote the sustainable modes of transport in the areas that are less adjusted in sustainable manner.
Ključne besede: transport mode choice, passenger transport, spatial modelling, city transport planning, city mobility, urban logistics, ergonomics, AHP, decision-making policy, GIS, students, objective and subjective factors, transport management
Objavljeno v DKUM: 10.12.2024; Ogledov: 0; Prenosov: 3
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Opis: In a typical pressurized water reactor, neutron detectors located outside the reactor core monitor reactor power. In addition, they are also used to measure the reactivity of the control rods. A novel approach to calculate the ex-core neutron detector response in a typical pressurized water reactor using the Monte Carlo technique is presented. A detailed ex-core model of the Krško nuclear power plant was developed using the Monte Carlo neutron transport code MCNP. Due to the location of the ex-core neutron detectors, the hybrid code ADVANTG is used to generate variance reduction parameters to accelerte the convergence of the results outside the reactor core. To use ADVANTG, the fixed neutron source had to be reconstructed from the criticality core calculation. This paper presents the sensitivity analysis of the response of the ex-core detectors to the neutron data libraries used, the description of the fixed neutron source and the ADVANTG parameters. It was found that a pin-wise description of the neutron source for at least two rows of fuel assemblies at the core periphery is necessary for accurate results. Our results show the importance of a correct description of the prompt neutron spectra in the high energy region and the impact this has on the response of the ex-core detectors. The method in which the prompt neutron fission spectra for important fission nuclides are weighted by the calculated reaction rates has been shown to be the best approximation, with deviations from the reference calculation within statistical uncertainty. The effect of nuclear data libraries on the response of the ex-core detector was investigated, and the difference between the ENDF/B-VII.0 and the ENDF/B-VIII.0 nuclear data libraries was ∼11%. When the deficient evaluation of the 56Fe isotope included in the ENDF/B-VIII.0 nuclear data library was replaced by the improved evaluation from the IAEA INDEN project, the differences decreased to ∼3.7%. In addition, neutron flux redistributions due to control rod movement were investigated and flux redistribution factors were updated using Monte Carlo particle transport methods. The reaction rate redistribution factors obtained with methods presented in this paper are within 1% agreement with the currently used factors.
Ključne besede: MCNP, ADVANTG, pressurized water reactor, Monte Carlo neutron transport, control rod, neutron flux redistribution factor, rod insertion, krško nuclear power plant
Objavljeno v DKUM: 29.11.2024; Ogledov: 0; Prenosov: 4
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Opis: Diplomsko delo je povezano s temo varovanja in pritrjevanja tovora v medskladiščnem transportu. Na začetku je prikazana tematika dela, cilji diplomskega dela in določena raziskovalna vprašanja, ki se bodo obravnavala v diplomskem delu. Raziskovalna vprašanja se nanašajo na odnos med vozniki tovornih vozil in določenimi situacijami v medskladiščnem tovornem prevozu. V teoretičnem delu je predstavljena zakonodaja na področju varovanja in pritrjevanja tovora na področju Slovenije, pomen varovanja in pritrjevanje tovora, tehnike in metode varovanja in pritrjevanja tovora in pripomočki, ki se uporabljajo za varovanje in pritrjevanje tovora v medskladiščnem transportu. V raziskovalnem delu smo opravili anketni vprašalnik za voznike tovornih vozil mase >3,5 t. S pomočjo pridobljenih odgovorov, smo prišli do rezultatov, s katerim smo preverili naša raziskovalna vprašanja in hipoteze. Na podlagi pridobljenih rezultatov, smo ugotovili, da so privezovalni trakovi najbolj uporabljeno sredstvo za varovanje in pritrjevanje tovora. Raziskava tudi potrjuje, da so starejši vozniki, bolj ozaveščeni o pomenu in načinu varovanja in pritrjevanja tovora in da imajo vozniki z več letnimi izkušnjami, manjše težave pri prilagajanju opreme različnim vrstam tovora. V zadnjem delu diplomskega dela smo še podali možne izboljšave na tem področju, ki se nanašajo na izboljšavo usposabljanja voznikov tovornih vozil in povečanje obsega opreme na tovornem vozilu.
Ključne besede: medskladiščni transport, pritrjevanje tovora, varovanje tovora, pripomočki za pritrjevanje tovora, tehnike in metode pritrjevanja tovora
Objavljeno v DKUM: 27.11.2024; Ogledov: 0; Prenosov: 7
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