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Relevant bibliographies by topics / P-concavity

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Journal articles

Academic literature on the topic 'P-concavity'

Author: Grafiati

Published: 10 March 2023

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Journal articles on the topic "P-concavity"

1

Hou, Qing-hu, and Guojie Li. "Log-concavity of P-recursive sequences." Journal of Symbolic Computation 107 (November 2021): 251–68. http://dx.doi.org/10.1016/j.jsc.2021.03.004.

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2

Ahmia, Moussa, and Hacène Belbachir. "Preserving log-concavity for p,q-binomial coefficient." Discrete Mathematics, Algorithms and Applications 11, no. 02 (2019): 1950017. http://dx.doi.org/10.1142/s1793830919500174.

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We study the log-concavity of a sequence of [Formula: see text]-binomial coefficients located on a ray of the [Formula: see text]-Pascal triangle for certain directions, and we establish the preserving log-concavity of linear transformations associated to [Formula: see text]-Pascal triangle.

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3

Schliemann, Benedikt, Michael Raschke, Philipp Michel, et al. "It’s more than size that matters: The role of glenoid concavity in shoulder instability with anterior bone loss." Orthopaedic Journal of Sports Medicine 9, no. 7_suppl4 (2021): 2325967121S0019. http://dx.doi.org/10.1177/2325967121s00198.

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Objectives: The mechanism of concavity-compression is known to be a key factor for glenohumeral stability in the mid-range of motion. This stabilizing effect is impaired by traumatic bone loss at the anterior glenoid rim. Currently, a critical threshold based on the defect size is used as a decisive criterion for surgical treatment. However, recent studies using finite element method (FEM)-simulations indicate that glenoid concavity is essential for an assessment of remaining glenohumeral stability. To date, there is no biomechanical investigation involving glenoid concavity in combination wit

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4

Schmid, Annina B., Linda Dyer, Thomas Böni, Ulrike Held, and Florian Brunner. "Paraspinal Muscle Activity During Symmetrical and Asymmetrical Weight Training in Idiopathic Scoliosis." Journal of Sport Rehabilitation 19, no. 3 (2010): 315–27. http://dx.doi.org/10.1123/jsr.19.3.315.

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Context:Various studies report decreased muscle activation in the concavity of the curve in patients with scoliosis. Such decreased muscle-performance capacity could lead to sustained postural deficits.Objective:To investigate whether specific asymmetrical sports therapy exercises rather than symmetrical back strengthening can increase EMG amplitudes of paraspinal muscles in the concavity of the curve.Design:Cross-sectional.Setting:Laboratory.Participants:16 patients with idiopathic scoliosis.Interventions:Patients performed 4 back-strengthening exercises (front press, lat pull-down, roman cha

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5

Ranieri, V. Marco, Haibo Zhang, Luciana Mascia, et al. "Pressure–Time Curve Predicts Minimally Injurious Ventilatory Strategy in an Isolated Rat Lung Model." Anesthesiology 93, no. 5 (2000): 1320–28. http://dx.doi.org/10.1097/00000542-200011000-00027.

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Background We tested the hypothesis that the pressure-time (P-t) curve during constant flow ventilation can be used to set a noninjurious ventilatory strategy. Methods In an isolated, nonperfused, lavaged model of acute lung injury, tidal volume and positive end-expiratory pressure were set to obtain: (1) a straight P-t curve (constant compliance, minimal stress); (2) a downward concavity in the P-t curve (increasing compliance, low volume stress); and (3) an upward concavity in the P-t curve (decreasing compliance, high volume stress). The P-t curve was fitted to: P = a. tb +c, where b descri

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6

Arazy, Jonathan, and Pei-Kee Lin. "On p-convexity and q-concavity of unitary matrix spaces." Integral Equations and Operator Theory 8, no. 3 (1985): 295–313. http://dx.doi.org/10.1007/bf01202902.

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7

Brzozowski, Michał. "Weighted exponential inequality for differentially subordinate martingales." Archiv der Mathematik 116, no. 6 (2021): 707–20. http://dx.doi.org/10.1007/s00013-021-01600-5.

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AbstractThe paper contains a study of weighted exponential inequalities for differentially subordinate martingales, under the assumption that the underlying weight satisfies Muckenhoupt’s condition $$A_{\infty }$$ A ∞ . The proof exploits certain functions enjoying appropriate size conditions and concavity. The martingales are adapted, uniformly integrable, and càdlàg - we do not assume any path-continuity restrictions. Because of this generality, we need to handle jump parts of processes which forces us to construct a Bellman function satisfying a stronger condition than local concavity. As a

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8

RUSKAI, MARY BETH. "LIEB'S SIMPLE PROOF OF CONCAVITY OF (A, B) ↦ Tr Ap K† B1-p K AND REMARKS ON RELATED INEQUALITIES." International Journal of Quantum Information 03, no. 03 (2005): 579–90. http://dx.doi.org/10.1142/s0219749905001109.

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A simple, self-contained proof is presented for the concavity of the map (A, B) ↦ Tr Ap K† B1-p K. The author makes no claim to originality; this paper gives Lieb's original argument in its simplest, rather than its most general, form. A sketch of the chain of implications from this result to concavity of A ↦ Tr eK+ log A is then presented. An independent elementary proof is given for the joint convexity of the map [Formula: see text], which plays a key role in entropy inequalities.

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9

Kuang, Yao, and Raphael Douady. "Has the Market Started to Collapse or Will It Resist?" Stats 5, no. 2 (2022): 401–7. http://dx.doi.org/10.3390/stats5020023.

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Many people are concerned about the stock market in 2022 as it faces several threats, from rising inflation rates to geopolitical events. The S&P 500 Index has already dropped about 10% from the peak in early January 2022 until the end of February 2022. This paper aims at updating the crisis indicator to predict when the market may experience a significant drawdown, which we developed in Crisis Risk Prediction with Concavity from Polymodel (2022). This indicator uses regime switching and Polymodel theory to calculate the market concavity. We found that concavity had not increased in the pa

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10

Liu, Qian, Chenjiu Pang, Changgeng Liu, et al. "Correlations among Corneal Biomechanical Parameters, Stiffness, and Thickness Measured Using Corvis ST and Pentacam in Patients with Ocular Hypertension." Journal of Ophthalmology 2022 (December 3, 2022): 1–9. http://dx.doi.org/10.1155/2022/7387581.

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Background. To preliminary explore the correlations among corneal biomechanical parameters, stiffness, and thickness in patients with ocular hypertension (OHT) before and after treatment with topical antiglaucoma medications. Methods. This was a retrospective study that included 35 eyes with newly diagnosed OHT. Axial length (AL), apical corneal thickness, and minimum corneal thickness were measured using Pentacam. The lengths, velocities, and times of the first and second corneal applanations (A1L, A1V, A1T, A2L, A2V, and A2T, respectively); the highest concavity radius; highest concavity pea

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