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"Golden, Mark"
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Greek Sport and Social Status
From the ancient Olympic games to the World Series and the World Cup, athletic achievement has always conferred social status. In this collection of essays, a noted authority on ancient sport discusses how Greek sport has been used to claim and enhance social status, both in antiquity and in modern times.
Mark Golden explores a variety of ways in which sport provided a route to social status. In the first essay, he explains how elite horsemen and athletes tried to ignore the important roles that jockeys, drivers, and trainers played in their victories, as well as how female owners tried to rank their equestrian achievements above those of men and other women. In the next essay, Golden looks at the varied contributions that slaves made to sport, despite its use as a marker of free, Greek status. In the third essay, he evaluates the claims made by gladiators in the Greek east that they be regarded as high-status athletes and asserts that gladiatorial spectacle is much more like Greek sport than scholars today usually admit. In the final essay, Golden critiques the accepted accounts of ancient and modern Olympic history, arguing that attempts to raise the status of the modern games by stressing their links to the ancient ones are misleading. He concludes that the contemporary movement to call a truce in world conflicts during the Olympics is likewise based on misunderstandings of ancient Greek traditions.
eBook
Indigo : a mosaic novel
\"Investigative reporter Nora Hesper spends her nights cloaked in shadows. As Indigo, she's become an urban myth, a brutal vigilante who can forge darkness into weapons and travel across the city by slipping from one patch of shadow to another. Her primary focus both as Nora and as Indigo has become a murderous criminal cult called the Children of Phonos. Children are being murdered in New York, and Nora is determined to make it stop, even if that means Indigo must eliminate every member. But in the aftermath of a bloody battle, a dying cultist makes claims that cause Indigo to question her own origin and memories\"-- Provided by publisher.
Book
4π-periodic Andreev bound states in a Dirac semimetal
Although signatures of superconductivity in Dirac semimetals have been reported, for instance by applying pressure or using point contacts, our understanding of the topological aspects of Dirac semimetal superconductivity is still developing. Here, we utilize nanoscale phase-sensitive junction technology to induce superconductivity in the Dirac semimetal Bi1−xSbx. Our radiofrequency irradiation experiments then reveal a significant contribution of 4π-periodic Andreev bound states to the supercurrent in Nb–Bi0.97Sb0.03–Nb Josephson junctions. The conditions for a substantial 4π contribution to the supercurrent are favourable because of the Dirac cone’s very broad transmission resonances and a measurement frequency faster than the quasiparticle poisoning rate. In addition, we show that a magnetic field applied in the plane of the junction allows tuning of the Josephson junctions from 0 to π regimes. Our results open the technologically appealing avenue of employing the topological bulk properties of Dirac semimetals for topological superconductivity research and topological quantum computer development.
Journal Article
Puddle formation and persistent gaps across the non-mean-field breakdown of superconductivity in overdoped (Pb,Bi)2Sr2CuO6+δ
The cuprate high-temperature superconductors exhibit many unexplained electronic phases, but the superconductivity at high doping is often believed to be governed by conventional mean-field Bardeen–Cooper–Schrieffer theory1. However, it was shown that the superfluid density vanishes when the transition temperature goes to zero2,3, in contradiction to expectations from Bardeen–Cooper–Schrieffer theory. Our scanning tunnelling spectroscopy measurements in the overdoped regime of the (Pb,Bi)2Sr2CuO6+δ high-temperature superconductor show that this is due to the emergence of nanoscale superconducting puddles in a metallic matrix4,5. Our measurements further reveal that this puddling is driven by gap filling instead of gap closing. The important implication is that it is not a diminishing pairing interaction that causes the breakdown of superconductivity. Unexpectedly, the measured gap-to-filling correlation also reveals that pair breaking by disorder does not play a dominant role and that the mechanism of superconductivity in overdoped cuprate superconductors is qualitatively different from conventional mean-field theory.The authors present scanning tunnelling spectroscopy data that show that the mechanism of superconductivity in overdoped cuprate superconductors is qualitatively different from conventional mean-field theory.
Journal Article
Greek Sport and Social Status
From the ancient Olympic games to the World Series and the World Cup, athletic achievement has always conferred social status. In this collection of essays, a noted authority on ancient sport discusses how Greek sport has been used to claim and enhance social status, both in antiquity and in modern times. Mark Golden explores a variety of ways in which sport provided a route to social status. In the first essay, he explains how elite horsemen and athletes tried to ignore the important roles that jockeys, drivers, and trainers played in their victories, as well as how female owners tried to rank their equestrian achievements above those of men and other women. In the next essay, Golden looks at the varied contributions that slaves made to sport, despite its use as a marker of free, Greek status. In the third essay, he evaluates the claims made by gladiators in the Greek east that they be regarded as high-status athletes and asserts that gladiatorial spectacle is much more like Greek sport than scholars today usually admit. In the final essay, Golden critiques the accepted accounts of ancient and modern Olympic history, arguing that attempts to raise the status of the modern games by stressing their links to the ancient ones are misleading. He concludes that the contemporary movement to call a truce in world conflicts during the Olympics is likewise based on misunderstandings of ancient Greek traditions.
eBook
Clinical evaluation of left ventricular function and morphology using an accelerated k-t sensitivity encoding method in cardiovascular magnetic resonance
ObjectivesTo provide clinical validation of a recent 2D SENSE-based accelerated cardiovascular magnetic resonance (CMR) sequence (accelerated k-t SENSE), investigating whether this technique accurately quantifies left ventricle (LV) volumes, function, and mass as compared to 2D cine steady-state free precession (2D-SSFP).MethodsHealthy volunteers (n = 16) and consecutive heart failure patients (n = 26) were scanned using a 1.5 T MRI system. Two LV short axis (SA) stacks were acquired: (1) accelerated k-t SENSE (5–6 breath-holds; temporal/spatial resolution: 37 ms/1.82 × 1.87 mm; acceleration factor = 4) and (2) standard 2D-SSFP (10–12 breath-holds; temporal/spatial resolution: 49 ms/1.67 × 1.87 mm, parallel imaging). Ascending aorta phase-contrast was performed on all volunteers as a reference to compare LV stroke volumes (LVSV) and validate the sequences. An image quality score for SA images was used, with lower scores indicating better quality (from 0 to 18).ResultsThere was a high agreement between accelerated k-t SENSE and 2D-SSFP for LV measurements: bias (limits of agreement) of 2.4% (− 5.4% to 10.1%), 6.9 mL/m2 (− 4.7 to 18.6 mL/m2), − 1.5 (− 8.3 to 5.2 mL/m2), and − 0.2 g/m2 (− 11.9 to 12.3 g/m2) for LV ejection fraction, end-diastolic volume index, end-systolic volume index, and mass index, respectively. LVSV by accelerated k-t SENSE presented good agreement with aortic flow. Interobserver and intraobserver variabilities for all LV parameters were also high.ConclusionThe accelerated k-t SENSE CMR sequence is clinically feasible and accurately quantifies LV volumes, function, and mass, with short acquisition time and good image quality.
Journal Article
