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Driving forward together : the common intention of Indonesians in different residential areas to use autonomous vehicles
Get PDFDespite the significant benefits of Autonomous Vehicles (AVs) for global transportation, Indonesia's diverse geographical landscape encounter unique adoption challenges due to infrastructural shortcomings and economic limitations. This study explores the adoption of AVs in Indonesia, considering its potential market and crucial role in AV and Electric Vehicle supply chains. Drawing upon the Technology Acceptance Model (TAM) and the Unified Theory of Acceptance and Use of Technology (UTAUT), we assessed AV acceptance across Indonesia's Metropolitan Cities, frontier regions (“3T”), and the New National Capital City (IKN) areas. Using a cross-sectional study design, we distributed an online questionnaire, focusing on demographics, perceived safety, transport mode changes, and behavioral intention towards AVs, based on TAM and UTAUT factors. From 1,255 valid responses, we found significant influences of gender (t (1253) = 4.22), safety perceptions (F (2,1252) = 52.373), and transport mode frequency (F (4, 1250) = 6.662) on AVs adoption intentions. Both TAM and UTAUT models were moderately effective in explaining willingness to use AVs (R2 = 34% and 48%, respectively). TAM highlighted perceived usefulness (β = 0.421) and ease of use (β = 0.540), while UTAUT emphasized effort expectancy (β = 0.317) and social influence (β = 0.240). However, the findings from the multigroup analysis did not corroborate the role of residential areas in determining the intention to use AVs. These findings offer crucial insights for developing AV promotion strategies, creating user-friendly designs, and formulating supportive policies for AV adoption in diverse Indonesian regions
An exploratory computational analysis in mice brain networks of widespread epileptic seizure onset locations along with potential strategies for effective intervention and propagation control
Get PDFMean-field models have been developed to replicate key features of epileptic seizure dynamics. However, the precise mechanisms and the role of the brain area responsible for seizure onset and propagation remain incompletely understood. In this study, we employ computational methods within The Virtual Brain framework and the Epileptor model to explore how the location and connectivity of an Epileptogenic Zone (EZ) in a mouse brain are related to focal seizures (seizures that start in one brain area and may or may not remain localized), with a specific focus on the hippocampal region known for its association with epileptic seizures. We then devise computational strategies to confine seizures (prevent widespread propagation), simulating medical-like treatments such as tissue resection and the application of an anti-seizure drugs or neurostimulation to suppress hyperexcitability. Through selectively removing (blocking) specific connections informed by the structural connectome and graph network measurements or by locally reducing outgoing connection weights of EZ areas, we demonstrate that seizures can be kept constrained around the EZ region. We successfully identified the minimal connections necessary to prevent widespread seizures, with a particular focus on minimizing surgical or medical intervention while simultaneously preserving the original structural connectivity and maximizing brain functionality
Spettri familiari. Letteratura e metapsichica nel secondo Novecento italiano
No full textFin dal principio gli spettri hanno abitato il canone della modernità letteraria italiana; né la loro presenza è mai stata limitata ai confini del “fantastico” – genere o modo che sia – o tanto meno alla filiera della letteratura popolare e di consumo. Tra scritti medianici e tavolette ouija, Poltergeist e fenomeni di “retrocognizione”, cimiteri infestati e anime del Purgatorio, Camilletti ricostruisce qui un ideale filone spettrale della letteratura del secondo Novecento italiano che adopera le suggestioni della metapsichica per interrogare le ombre della storia, le ambiguità della lingua, i vicoli ciechi della memoria, le possibilità del reincanto.
Analizzando testi di Pitigrilli, Giorgio Vigolo, Eduardo De Filippo, Dino Buzzati, Mario Soldati e Giorgio Bassani, questo libro tratteggia così l’immagine di una spettralità tutta italiana, nata dal dissolversi degli spazi e dei riti della grande tradizione borghese: una spettralità intimamente crepuscolare, fatta di “canzonette” e di mitologie del “primo amore”, di educazioni cattoliche e tentazioni del proibito, di partite di tennis lunghe estati intere e di alberghi di montagna dove si sperimenta con l’ignoto
Equivalent geometric imperfections for the design of steel and stainless steel beam-columns by GMNIA
Get PDFIn current structural steel design specifications, the stability of members is typically assessed through the use of buckling curves which implicitly consider the influence of both initial geometric imperfections and residual stresses. An alternative and more direct approach is to perform a second order analysis of the member or structure with all imperfections included. For modelling convenience, i.e. to avoid the explicit modelling of residual stresses, so-called ‘equivalent’ geometric imperfections are typically utilised, which consider the combined influence of both geometric imperfections and residual stresses through an increased geometric imperfection amplitude. For columns and beams, equivalent geometric imperfections for use in design by geometrically and materially nonlinear analysis with imperfections (GMNIA) have recently been developed. However, for beam-columns, which are subjected to combined compression and bending, there are currently no specific provisions. Therefore, equivalent geometric imperfections for application in the stability design of steel and stainless steel beam-columns by GMNIA are developed herein. The proposals are calibrated against the results of benchmark finite element (FE) simulations performed on a large number of steel and stainless steel I-section or hollow section beam-columns, with or without intermediate lateral restraints, subjected to various ratios of axial compression and major and/or minor bending moments. Proposals for the shapes and amplitudes of equivalent geometric imperfections are developed for application with both eigenmode-affine imperfections e0,mod and the direct modelling of sinusoidal bow imperfections e0,bow. Relative to the traditional Eurocode design calculations, employing the developed equivalent geometric imperfections in GMNIA provides more accurate resistance predictions. The reliability analysis of the design provisions shows that partial safety factors of 1.0 for steel and 1.1 for stainless steel can be safely adopted
Optical constants of exoplanet haze analogs from 0.3 to 30 µm : comparative sensitivity between spectrophotometry and ellipsometry
Get PDFWe report new optical constants (refractive index, n, and extinction coefficient, k) for exoplanet haze analogs from 0.3 to 30 µm. The samples were produced in a simulated N2-dominated atmosphere with two different abundance ratios of CO2 and CH4, using the PAMPRE plasma reactor at LATMOS. We find that our haze analogs present a significantly lower extinction coefficient in the optical and near-infrared (NIR) range compared to the seminal data obtained on Titan haze analogs. We confirm the stronger IR absorption expected for hazes produced in a gas mixture with higher CO2 abundances. Given the strong impact of the atmospheric composition on the absorbing power of hazes, these new data should be used to characterize early-Earth and CO2-rich exoplanet atmospheres. The data presented in this paper can be found in the Optical Constants Database. Using ellipsometry or spectrophotometry, the retrieved optical constants are affected by the sensitivity of the measurement and the accuracy of the calculations. A comparative study of both techniques was performed to identify limitations and better understand the discrepancies present in the previous data. For the refractive index n, errors of 1–3% are observed with both optical techniques and the different models, caused by the correlation with the film thickness. We find that UV-visible reflection ellipsometry provides similar n values, regardless of the model used; whereas the Swanepoel method on transmission is more subjected to errors in the UV. In the UV and mid-infrared (MIR), the different calculations lead to rather small errors on k. Larger errors of k arise in the region of weak absorption, where calculations are more sensitive to errors on the refractive index n
Finding your sea-legs : exploring newcomer embodied learning in an extreme context
Get PDFEmbodied learning involves developing not only socio-technical know-how but also the bodily capacity to execute practices competently. In extreme contexts, newcomers encounter threatening experiences that may incapacitate their ability to participate. How newcomers develop the bodily capacity to participate in such situations is a research area that requires further attention. Using ethnographic data from a study of novices working in the risky context of seafaring, we show that newcomers encounter threat experiences (imagined, immediate, and attenuated) that trigger them to engage in three types of body work: priming, battling, and enduring, from which they develop the capacity to participate. Our analysis suggests a model of newcomer embodied learning in practices in an extreme context and contributes to embodied learning literature by showing: (1) body work directed at capacity to participate, (2) the mutually constitutive relationship between body work and threat experiences, and (3) the temporal complexity of embodied learning anchored in the body work and threat experiences
Probing the CP nature of the top–Higgs Yukawa coupling in tt¯H and tH events with H → bb¯ decays using the ATLAS detector at the LHC
Get PDFThe CP properties of the coupling between the Higgs boson and the top quark are investigated using 139 fb−1 of proton–proton collision data recorded by the ATLAS experiment at the LHC at a centre-of-mass energy of √s = 13 TeV. The CP structure of the top quark–Higgs boson Yukawa coupling is probed in events with a Higgs boson decaying into a pair of b-quarks and produced in association with either a pair of top quarks, ttH , or a single top quark, tH. Events containing one or two electrons or muons are used for the measurement. Multivariate techniques are used to select regions enriched in ttH and tH events, where dedicated CP -sensitive observables are exploited. In an extension of the Standard Model (SM) with a CP -odd admixture in the top–Higgs Yukawa coupling, the mixing angle between CP -even and CP -odd couplings is measured to be α = 11 °+52° −73°, compatible with the SM prediction corresponding to α = 0
Evidence for very massive stars in extremely UV-bright star-forming galaxies at z ∼ 2.2 − 3.6
Get PDFWe present a comprehensive analysis of the presence of very massive stars (VMS > 100 M⊙) in the integrated spectra of 13 UV-bright star-forming galaxies at 2.2 ≲ z ≲ 3.6 taken with the Gran Telescopio Canarias (GTC). These galaxies have very high UV absolute magnitudes (MUV ≃ −24), intense star formation (star formation rate ≃100 − 1000 M⊙ yr−1), and metallicities in the range of 12 + log(O/H) ≃ 8.10 − 8.50 inferred from strong rest-optical lines. The GTC rest-UV spectra reveal spectral features indicative of very young stellar populations with VMS, such as strong P-Cygni line profiles in the wind lines N Vλ1240 and C IVλ1550 along with intense and broad He IIλ1640 emission with equivalent width (EW0) ≃ 1.40 − 4.60 Å, and full width half maximum (FWHM) ≃1150 − 3170 km s−1. A Comparison with known VMS-dominated sources and typical galaxies without VMS reveals that some UV-bright galaxies closely resemble VMS-dominated clusters (e.g., R136 cluster). The presence of VMS is further supported by a quantitative comparison of the observed strength of the He II emission with population synthesis models with and without VMS, where models with VMS are clearly preferred. Employing an empirical threshold for EW0 (He II) ≥ 3.0 Å, along with the detection of other VMS-related spectral profiles (N IVλ1486, 1719), we classify nine out of 13 UV-bright galaxies as VMS-dominated sources. This high incidence of VMS-dominated sources in the UV-bright galaxy population (≈70%) contrasts significantly with the negligible presence of VMS in typical LUV∗ LBGs at similar redshifts (< 1%). Our results thus indicate that VMS are common in UV-bright galaxies, suggesting a different initial mass function (IMF) with upper mass limits between 175 M⊙ and 475 M⊙
Hamlet and pure object revenge – the matter of life and death
Get PDFWhy do we strike intrinsically inoffensive objects when they intrude upon our lives? Why, for example, do we kick the car when it breaks down, or slap the chair that pinches our finger against the table, or strike the open door that collides with our head? In this essay, I ask whether this phenomenon, which I call the performance of “pure object revenge”, might arise from an impulse to execute vindicatory, and in that sense vengeful, justice upon the offending object. My new explanation for the phenomenon is that we strike the offending object because it has no life but has briefly acted as if it were alive. It therefore reminds us in the brief moment of its offence that our bodies are also inanimate dust and will return to dust and in the meantime are only briefly animated. In short, my argument is that we strike the object because it is a memento mori. To test and support this, I offer a reading of the “closet scene” at the centre of Shakespeare’s Hamlet to illustrate the performative impulse to banish inanimate objects at the threshold of the living and the dead