Measurements of jet substructure are key to probing the energy frontier at colliders, and many of them use track-based observables which take advantage of the angular precision of tracking detectors. Theoretical calculations of track-based observables require ‘track functions’, which characterize the transverse momentum fraction rq carried by charged hadrons from a fragmenting quark or gluon. This letter presents a direct measurement of rq distributions in dijet events from the 140 fb−1 of proton–proton collisions at s=13 TeV recorded with the ATLAS detector. The data are corrected for detector effects using machine-learning methods. The scale evolution of the moments of the rq distribution is sensitive to non-linear renormalization group evolution equations of QCD, and is compared with analytic predictions. When incorporated into future theoretical calculations, these results will enable a precision program of theory-data comparison for track-based jet substructure observables.
Extended reality can weave together the fabric of the past, present, and future. A two-day design hackathon was held to bring the community together through a love for history and a common goal to use technology for good. Through interviewing an influential community elder, Emile Pitre, and referencing his book Revolution to Evolution, my team developed an augmented reality artifact to tell his story and preserve on revolutionary's legacy that impacted the University of Washington's history forever.
Algebraic quantum field theory (AQFT) puts forward three "causal axioms" that aim to characterize the theory as one that implements relativistic causation: the spectrum condition, microcausality, and primitive causality. In this paper, I aim to show, in a minimally technical way, that none of them fully explains the notion of causation appropriate for AQFT because they only capture some of the desiderata for relativistic causation I state or because it is often unclear how each axiom implements its respective desideratum. After this diagnostic, I will show that a fourth condition, local primitive causality (LPC), fully characterizes relativistic causation in the sense of fulfilling all the relevant desiderata. However, it only encompasses the virtues of the other axioms because it is implied by them, as I will show from a construction by Haag and Schroer (1962). Since the conjunction of the three causal axioms implies LPC and other important results in QFT that LPC does not imply, and since LPC helps clarify some of the shortcomings of the three axioms, I advocate for a holistic interpretation of how the axioms characterize the causal structure of AQFT against the strategy in the literature to rivalize the axioms and privilege one among them.
This paper aims to discuss Dioscorides’ cycle of epigrams about the dramatic poets, focusing on his three poems about the tragic poets. Through the three funerary epigrams on Thespis (20 GP), Aeschylus (21 GP) and Sophocles (22 GP), the epigrammatist presents in an allusive and extremely concise manner a story of the tragic genre from its origins in a rural environment to its peak reached with the work of Sophocles. This paper comments on how this panorama sketched by the epigrams of Dioscorides was influenced by the discussions developed in Antiquity concerning the history of tragedy.
This research aims to examine the history and future of ceramic sculpture, evaluating the development of this significant art form. It observes the role and evolving face of ceramic sculpture art from ancient times to the present, discussing its potential in the future. In ancient times, people used ceramic sculptures to express their religious and mythological beliefs. Civilizations such as Ancient Egypt, Ancient Greece, and the Roman Empire reflected their beliefs and cultures through ceramic sculptures. During the Middle Ages and Renaissance periods, artisans produced ceramic sculptures to enhance the aesthetic and religious aspects of churches' interior decoration. The sculptures from these periods stood out for their traditional craftsmanship and handmade techniques. With the onset of the modern era, technological advancements have fundamentally transformed ceramic sculpture art. Artists have observed diversity and change in the artistic expressions of ceramic sculptures as they address societal, political, and environmental issues, creating new and contemporary works. The relationship between ceramic art and technology has continued to grow, especially with the recent advancements in 3D printing technology, which provide artists with greater creative freedom and allow for the creation of more complex forms and details in sculptures. While ceramic sculpture art remains an essential part of our cultural heritage, artists will continue to shape the thoughts and societal consciousness of people through ceramic sculptures in the future. As a form of art that has evolved throughout history, ceramic sculpture art will persist in representing the creativity and freedom of expression of artists, enhancing the artistic experiences of individuals with the conveniences brought about by technology.
Helena C. Maltezou, Maria N. Gamaletsou, Maria Chini
et al.
Background: To estimate the protection that coronavirus disease 2019 (COVID-19) vaccine doses conferred to hospitalized patients with COVID-19 against adverse outcomes and longer length of stay during the Omicron BA.2 and BA.5 subvariant epidemics in Greece. Methods: The study was conducted from November 2022 to May 2023. Multivariable logistic and negative binomial regression models were applied to estimate the association between any adverse outcomes and length of stay with the number of COVID-19 vaccine doses. Results: We studied 962 patients (median age: 78 years; mean length of stay: 9.2 days), of whom 847 (88.0%) had ≥ 1 comorbidity. Of these, 39 (4.0%) were admitted to the intensive care unit, 44 (4.6%) received invasive mechanical ventilation, and 110 (11.4%) died in hospital. There were 184 (19.1%) unvaccinated patients, 125 (13.0%) with one or two vaccine doses, and 653 (67.9%) with ≥ 3 doses. In multivariable analyses, patients with ≥ 3 doses had lower odds of experiencing any adverse outcomes (adjusted odds ratio: 0.57; 95% confidence interval [CI]: 0.37–0.86) compared with unvaccinated patients. On average, patients with one or two doses and those with ≥ 3 had decreased length of hospital stay (−1.5 days [95% CIs: −2.6 to −0.4] and −2.8 days [95% CIs: −4.1 to −1.4], respectively] compared with unvaccinated patients. Other characteristics consistently associated with adverse outcomes and longer length of stay included older age, having three or more comorbidities compared with none, and being admitted to the hospital two or more weeks post-diagnosis. Conclusions: A history of ≥ 3 vaccine doses conferred significant protection against any adverse outcome and longer length of stay in hospitalized patients with COVID-19.
The present article explores the usage of the historical present tense in the narration of the Early Modern Greek romance Erotokritos. Focusing on both the shape and the semantics of present indicatives designating past events in a narrative context, the analysis investigates the phenomenon from the perspective of diegetic and mimetic narrative modes and the respective discourse-pragmatic functions. First, the examination demonstrates the diegetic quality of the historical present tense in summary narratives to foreshadow cognitively salient events in the story and focalize referents important to the plot. Second, it elucidates the tense's mimetic ability in scenic narratives to create a dramatic atmosphere, and third, it illuminates the static dimension of this technique with the tendency to express mental states and psychological expressions of the protagonists. The analysis provides evidence of the use of the historical present tense as a cultivated literary device from both narratological and philological points of view, shedding new light on the diachronic development of this phenomenon.
Raphael Watschinger, Michal Merta, Günther Of
et al.
We present a novel approach to the parallelization of the parabolic fast multipole method for a space-time boundary element method for the heat equation. We exploit the special temporal structure of the involved operators to provide an efficient distributed parallelization with respect to time and with a one-directional communication pattern. On top, we apply a task-based shared memory parallelization and SIMD vectorization. In the numerical tests we observe high efficiencies of our parallelization approach.
A bumper edition this time, by way of apology for COVID-necessitated absenteeism in the autumn issue. The focus is on three pillars of social history – the economy (stupid), law, and religion. First up is Saskia Roselaar's second monograph, Italy's Economic Revolution. Roselaar sets out to trace the contribution made by economics to Italy's integration in the Roman Republic, focusing on the period after the ‘conquest’ of Italy (post 268 bce). Doing so necessitates two distinct steps: assessing, first, how economic contacts developed in this period, and second, whether and to what extent those contacts furthered the wider unification of Italy under Roman hegemony. Roselaar is influenced by New Institutional Economics (hereafter NIE), now ubiquitous in studies of the ancient economy. Her title may be an homage to Philip Kay's Rome's Economic Revolution, but the book itself is a challenge to that work, which in Roselaar's view neglects almost entirely the agency of the Italians in the period's economic transformation. For Roselaar, the Italians were as much the drivers of change as the Romans; indeed, it is this repeated conviction that unifies her chapters.
The first determination of the surface temperature of stars other than the Sun is due to the Hungarian astrophysicist Béla Harkányi. Prompted by the recent unprecedented increase in the availability of stellar temperature estimates from Gaia, coinciding with the 150th anniversary of Harkányi's birth, this article presents the life and work of this neglected, yet remarkable figure in the context of the history of stellar astrophysics.
The concentration parameter is a key characteristic of a dark matter halo that conveniently connects the halo's present-day structure with its assembly history. Using 'Dark Sky', a suite of cosmological $N$-body simulations, we investigate how halo concentration evolves with time and emerges from the mass assembly history. We also explore the origin of the scatter in the relation between concentration and assembly history. We show that the evolution of halo concentration has two primary modes: (1) smooth increase due to pseudo-evolution; and (2) intense responses to physical merger events. Merger events induce lasting and substantial changes in halo structures, and we observe a universal response in the concentration parameter. We argue that merger events are a major contributor to the uncertainty in halo concentration at fixed halo mass and formation time. In fact, even haloes that are typically classified as having quiescent formation histories experience multiple minor mergers. These minor mergers drive small deviations from pseudo-evolution, which cause fluctuations in the concentration parameters and result in effectively irreducible scatter in the relation between concentration and assembly history. Hence, caution should be taken when using present-day halo concentration parameter as a proxy for the halo assembly history, especially if the recent merger history is unknown.
A search for the Zγ decay of the Higgs boson, with Z boson decays into pairs of electrons or muons is presented. The analysis uses proton–proton collision data at s = 13 TeV corresponding to an integrated luminosity of 139 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The observed data are consistent with the expected background with a p-value of 1.3%. An upper limit at 95% confidence level on the production cross-section times the branching ratio for pp→H→Zγ is set at 3.6 times the Standard Model prediction while 2.6 times is expected in the presence of the Standard Model Higgs boson. The best-fit value for the signal yield normalised to the Standard Model prediction is 2.0−0.9+1.0 where the statistical component of the uncertainty is dominant.
Some questions never go out of fashion. My main focus in this issue is the spread of Roman power across the Mediterranean, with multiple new publications appearing on this oldest of subjects. First up is Dexter Hoyos’ Rome Victorious. This work of popular history aims to cover what Hoyos dubs in his subtitle The Irresistible Rise of the Roman Empire, though that is rather an odd choice, since Hoyos stresses that Rome's imperial efforts did not always succeed. Hoyos walks us through the unification of Italy and the acquisition of the Republican provinces in the first two chapters, taking the narrative up to the death of Caesar in 44 bc. The next two chapters consider the consequences of those conquests: what a province actually meant, how it was controlled, and the effects both on the new territories’ inhabitants and on Rome's social and political make-up. In Chapter 5, Hoyos turns to the extensive imperial efforts of Augustus and those around him; those of his successors over the next two centuries are dealt with in Chapter 6. Chapter 7 surveys the shifting make-up of the Romans as a result of their conquests, focusing on the spread of citizenship and the changing origins of senators, generals, and artists. Chapter 8 looks at legitimate and illegitimate rule in Rome's provinces, Chapter 9 considers both Rome's self-reflexivity on imperial questions and the view from those regions themselves, and Chapter 10 bolsters the latter by treating concrete resistance to Rome. Chapter 11 looks at the degree to which the provinces became Roman.
The article is devoted to the Cyprus issue in the context of the European integration processes from the Republic’s independence till the accession of Cyprus to the European Union in 2004. Forms and stages of Cyprus` integration policy were revealed in the article. The European integration was the main idea of the Cyprus history in the late 20th century and at the early 21th century. Therefore, the mentioned aspect became the subject of this research. Two lead strategies of the Cyprus policy towards European Communities were identified. The first one was the association within the framework of the customs union as a lead Cyprus policy in 1970-1980th. The second strategy was based on the principles of full membership in the European Union. The latter was occurring in the post Cold war era and had been succeeded in 2004.
The home and foreign problems, formed so called Cyprus question, were characterized in the paper. Ethnic conflict’s consequences, artificial territorial division, unfinished peacekeeping operation were obstructing the European goal of the Cyprus Republic. European Commission considered Cyprus to be adjusted to the European high standards. Due to Greek Cypriot’s hard work for the juridical implementations and social and economic adaptations Cyprus was accepted to the EU. In the 1990s the European Union proposed its own way to maintain the Cyprus problem by proceeding intercommunion negotiations and UN Resolutions. This EU`s activity was failed in many points that was reflected in the paper.
The British, Greek and Turkish opinion about the Cyprus integration was analyzed. The politic reaction of Greece and Turkey was also in the focus of view. An attention was paid to the Turkish community of Cyprus as a separated problem. The change of Turks Cypriots` status during integration policy of Cyprus was a prominent feature in attempting to solve Cyprus dispute. The Cyprus question is affecting the Turkish European policy badly. Therefore, this problem remains actual for the European history.