348 research outputs found
Upper and lower bounds for the Bregman divergence
No full textAbstract In this paper we study upper and lower bounds on the Bregman divergence ΔFξ(y,x):=F(y)−F(x)−〈ξ,y−x〉 for some convex functional F on a normed space X , with subgradient ξ∈∂F(x) . We give a considerably simpler new proof of the inequalities by Xu and Roach for the special case F(x)=∥x∥p , p>1 . The results can be transferred to more general functions as well
Higher order convergence rates for Bregman iterated variational regularization of inverse problems
No full text
Sprung rhythm w poezji Stanisława Barańczaka
No full textThis article demonstrates the influence of G.M. Hopkins’s poetry, especially his idea of sprung rhythm, on the works of S. Barańczak. Barańczak translated Hopkins’s poems in the late 1970s. He is also the author of articles addressing Hopkins’s life and poetry. During the process of translation Barańczak had the opportunity to investigate not only Hopkins’s philosophical and religious poems, but also his concept of sprung rhythm. This specific rhythmical form was an interesting translation issue for Barańczak, which he analysed in his articles. The author of this paper shows that sprung rhythm which was encountered during the process of translation permeated Barańczak’s own poems. The rhythmical form in Hopkins’s poems is similar to the Polish tradition of accentual long-line verse, originating from Mickiewicz’s poetry. Barańczak used this pattern in translations and in his own poems, but he modified it to make it similar to Hopkins’s model of sprung rhythm. The author also proves that Barańczak was inspired by Hopkins’s prosodic effects, especially instrumentation of verse and paronomasia
Hydrocortisone therapy for patients with septic shock
No full textBackground Hydrocortisone is widely used in patients with septic shock even though a survival benefit has been reported only in patients who remained hypotensive after fluid and vasopressor resuscitation and whose plasma cortisol levels did not rise appropriately after the administration of corticotropin. Methods In this multicenter, randomized, double-blind, placebo-controlled trial, we assigned 251 patients to receive 50 mg of intravenous hydrocortisone and 248 patients to receive placebo every 6 hours for 5 days; the dose was then tapered during a 6-day period. At 28 days, the primary outcome was death among patients who did not have a response to a corticotropin test. Results Of the 499 patients in the study, 233 (46.7%) did not have a response to corticotropin (125 in the hydrocortisone group and 108 in the placebo group). At 28 days, there was no significant difference in mortality between patients in the two study groups who did not have a response to corticotropin (39.2% in the hydrocortisone group and 36.1% in the placebo group, P=0.69) or between those who had a response to corticotropin (28.8% in the hydrocortisone group and 28.7% in the placebo group, P=1.00). At 28 days, 86 of 251 patients in the hydrocortisone group (34.3%) and 78 of 248 patients in the placebo group (31.5%) had died (P=0.51). In the hydrocortisone group, shock was reversed more quickly than in the placebo group. However, there were more episodes of superinfection, including new sepsis and septic shock. Conclusions Hydrocortisone did not improve survival or reversal of shock in patients with septic shock, either overall or in patients who did not have a response to corticotropin, although hydrocortisone hastened reversal of shock in patients in whom shock was reversed. (ClinicalTrials.gov number, NCT00147004 [ClinicalTrials.gov] .)Peer reviewedPublisher PD
A Base-Excitation Approach to Polynomial Chaos-Based Estimation of Sprung Mass for Off-Road Vehicles
No full textThis paper presents a novel method for identifying in real-time the sprung mass of a 2-DOF quarter-car suspension model. It does so by uniquely combining the base-excitation concept with polynomial chaos estimation. This unique combination of the two methods provides two important benefits. First, the base-excitation concept makes it possible to estimate the sprung mass without explicitly measuring or knowing the terrain profile prior to estimation. Second, the polynomial chaos estimation strategy makes it possible to perform such mass estimation using sprung and unsprung acceleration measurements without pseudo-integration filters that can be difficult to tune. This paper derives the proposed method in detail and presents computer simulations to evaluate its convergence speed and accuracy. The simulation results consistently converge to within 10% of the true mass value typically within 120 seconds.</jats:p
sj-docx-15-dhj-10.1177_20552076231183552 - Supplemental material for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions
No full textSupplemental material, sj-docx-15-dhj-10.1177_20552076231183552 for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions by Daniel J Bannell, Madeleine France-Ratcliffe, Benjamin James Roy Buckley, Anthony Crozier, Andrew P Davies, Katie L. Hesketh, Helen Jones, Matthew Cocks and Victoria S Sprung in DIGITAL HEALTH</p
sj-eps-16-dhj-10.1177_20552076231183552 - Supplemental material for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions
No full textSupplemental material, sj-eps-16-dhj-10.1177_20552076231183552 for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions by Daniel J Bannell, Madeleine France-Ratcliffe, Benjamin James Roy Buckley, Anthony Crozier, Andrew P Davies, Katie L. Hesketh, Helen Jones, Matthew Cocks and Victoria S Sprung in DIGITAL HEALTH</p
sj-docx-7-dhj-10.1177_20552076231183552 - Supplemental material for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions
No full textSupplemental material, sj-docx-7-dhj-10.1177_20552076231183552 for Adherence to unsupervised exercise in sedentary individuals: A randomised feasibility trial of two mobile health interventions by Daniel J Bannell, Madeleine France-Ratcliffe, Benjamin James Roy Buckley, Anthony Crozier, Andrew P Davies, Katie L. Hesketh, Helen Jones, Matthew Cocks and Victoria S Sprung in DIGITAL HEALTH</p
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