Journal articles: 'Radial correlation'

1

Lu, Weiying, and Peter de Harrington. "Radial Basis Function Cascade Correlation Networks." Algorithms 2, no. 3 (August 27, 2009): 1045–68. http://dx.doi.org/10.3390/a2031045.

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Conway, G. D. "2D modelling of radial correlation reflectometry." Plasma Physics and Controlled Fusion 39, no. 3 (March 1, 1997): 407–21. http://dx.doi.org/10.1088/0741-3335/39/3/006.

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Mueller, Gary E. "A modified packed bed radial porosity correlation." Powder Technology 342 (January 2019): 607–12. http://dx.doi.org/10.1016/j.powtec.2018.10.030.

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Orel, S. G., K. Evers, I. T. Yeh, and R. H. Troupin. "Radial scar with microcalcifications: radiologic-pathologic correlation." Radiology 183, no. 2 (May 1992): 479–82. http://dx.doi.org/10.1148/radiology.183.2.1561353.

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Koga, Toshikatsu. "Note on radial correlation factors of atoms." Journal of Physics B: Atomic, Molecular and Optical Physics 47, no. 21 (October 15, 2014): 215001. http://dx.doi.org/10.1088/0953-4075/47/21/215001.

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Koga, Toshikatsu. "Profiling the radial correlation factor of atoms." Journal of Physics B: Atomic, Molecular and Optical Physics 48, no. 4 (January 22, 2015): 045002. http://dx.doi.org/10.1088/0953-4075/48/4/045002.

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Saha, B., S. Bhattacharyya, T. K. Mukherjee, and P. K. Mukherjee. "Radial and angular correlation in heliumlike ions." International Journal of Quantum Chemistry 92, no. 5 (2003): 413–18. http://dx.doi.org/10.1002/qua.10473.

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Schirmer, J., G. D. Conway, E. Holzhauer, W. Suttrop, H. Zohm, and the ASDEX Upgrade Team. "Radial correlation length measurements on ASDEX Upgrade using correlation Doppler reflectometry." Plasma Physics and Controlled Fusion 49, no. 7 (June 5, 2007): 1019–39. http://dx.doi.org/10.1088/0741-3335/49/7/006.

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Ruiz Ruiz, J., F. I. Parra, V. H. Hall-Chen, N. Christen, M. Barnes, J. Candy, J. Garcia, et al. "Interpreting radial correlation Doppler reflectometry using gyrokinetic simulations." Plasma Physics and Controlled Fusion 64, no. 5 (April 12, 2022): 055019. http://dx.doi.org/10.1088/1361-6587/ac5916.

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Abstract A linear response, local model for the DBS amplitude applied to gyrokinetic simulations shows that radial correlation Doppler reflectometry measurements (RCDR, Schirmer et al 2007 Plasma Phys. Control. Fusion 49 1019) are not sensitive to the average turbulence radial correlation length, but to a correlation length that depends on the binormal wavenumber k ⊥ selected by the Doppler backscattering (DBS) signal. Nonlinear gyrokinetic simulations show that the turbulence naturally exhibits a nonseparable power law spectrum in wavenumber space, leading to a power law dependence of the radial correlation length with binormal wavenumber l r ∼ C k ⊥ − α ( α ≈ 1 ) which agrees with the inverse proportionality relationship between the measured l r and k ⊥ observed in experiments (Fernández-Marina et al 2014 Nucl. Fusion 54 072001). This new insight indicates that RCDR characterizes the eddy aspect ratio in the perpendicular plane to the magnetic field. It also motivates future use of a nonseparable turbulent spectrum to quantitatively interpret RCDR and potentially other turbulence diagnostics. The radial correlation length is only measurable when the radial resolution at the cutoff location W n satisfies W n ≪ l r , while the measurement becomes dominated by W n for W n ≫ l r . This suggests that l r is likely to be inaccessible for electron-scale DBS measurements ( k ⊥ ρ s > 1 ). The effect of W n on ion-scale radial correlation lengths could be nonnegligible.

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Hojjatpanah, S., M. Oshagh, P. Figueira, N. C. Santos, E. M. Amazo-Gómez, S. G. Sousa, V. Adibekyan, et al. "The correlation between photometric variability and radial velocity jitter." Astronomy & Astrophysics 639 (July 2020): A35. http://dx.doi.org/10.1051/0004-6361/202038035.

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Context. Characterizing the relation between stellar photometric variability and radial velocity (RV) jitter can help us to better understand the physics behind these phenomena. The current and upcoming high precision photometric surveys such as TESS, CHEOPS, and PLATO will provide the community with thousands of new exoplanet candidates. As a consequence, the presence of such a correlation is crucial in selecting the targets with the lowest RV jitter for efficient RV follow-up of exoplanetary candidates. Studies of this type are also crucial to design optimized observational strategies to mitigate RV jitter when searching for Earth-mass exoplanets. Aims. Our goal is to assess the correlation between high-precision photometric variability measurements and high-precision RV jitter over different time scales. Methods. We analyze 171 G, K, and M stars with available TESS high precision photometric time-series and HARPS precise RVs. We derived the stellar parameters for the stars in our sample and measured the RV jitter and photometric variability. We also estimated chromospheric Ca II H & K activity indicator log(RHK′), v sin i, and the stellar rotational period. Finally, we evaluate how different stellar parameters and an RV sampling subset can have an impact on the potential correlations. Results. We find a varying correlation between the photometric variability and RV jitter as function of time intervals between the TESS photometric observation and HARPS RV. As the time intervals of the observations considered for the analysis increases, the correlation value and significance becomes smaller and weaker, to the point that it becomes negligible. We also find that for stars with a photometric variability above 6.5 ppt the correlation is significantly stronger. We show that such a result can be due to the transition between the spot-dominated and the faculae-dominated regime. We quantified the correlations and updated the relationship between chromospheric Ca II H & K activity indicator log(RHK′) and RV jitter.

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Zucker, Shay. "TODCOR – Two-Dimensional Correlation." Proceedings of the International Astronomical Union 7, S282 (July 2011): 371–78. http://dx.doi.org/10.1017/s1743921311027852.

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AbstractTODCOR is a TwO-Dimensional CORrelation technique to measure radial velocities of the two components of a spectroscopic binary. Assuming the spectra of the two components are known, the technique correlates an observed binary spectrum against a combination of the two spectra with different shifts. TODCOR measures simultaneously the radial velocities of the two stars by finding the maximum correlation. The main use of the technique has been to turn single-lined binaries into double-lined systems. This helps to explore the binary mass-ratio distribution, especially the low-mass regime, where the secondaries are usually very faint and therefore hard to detect. The technique has been generalized to study multi-order spectra, and also triple- and quadruple-lined systems. It has several applications in studying extrasolar planets and in the future may even help to dynamically measure stellar masses of binaries through relativistc effects.

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BAO CHENG-GUANG. "STRONG RADIAL-RADIAL CORRELATION REGION IN DOUBLY EXCITED 1Se STATES OF HELIUM ATOM." Acta Physica Sinica 39, no. 1 (1990): 163. http://dx.doi.org/10.7498/aps.39.163.

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Ekmejian, A., R. Cohen, V. Vijayarajan, F. Zaky, J. Moragues, T. David, A. Yeung, et al. "Correlation Between Radial Artery Anomalies and Procedural Outcomes of Trans-radial Coronary Catheterisation." Heart, Lung and Circulation 28 (2019): S393. http://dx.doi.org/10.1016/j.hlc.2019.06.604.

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Algieri, Agustín, Rubén Algieri, Homero Bianchi, María Ferrante, and Carolina Brofman. "Palmar Arch: Anatomical And Surgical Correlation in Trauma." International Journal of Medical and Surgical Sciences 3, no. 3 (October 26, 2018): 951–58. http://dx.doi.org/10.32457/ijmss.2016.029.

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The irrigation of the palm is provided by arterial arches (shallow and deep) that are made more frequently by the ulnar or radial arteries described as setting a classic pattern. Anatomical variations are described in shaping both arches, most often in the superficial palmar arch; may be the same complete or incomplete. The objective of this work is the anatomical description of the palmar arches, their different patterns and variations in conformation, and their clinical and surgical implications. A descriptive, observational and morphometric study of the arteries involved in the formation of the palmar arches was done in the Faculty of Medicine, University of Buenos Aires. One hundred1(00) cadaveric preparations fixed in formalin solution, of the Third Chair of Anatomy were used. A retrospective analysis of cases with lesions / s artery / main / s that make the palmar arches in the Emergency Hospital of Moron, between 2015-2016 s was also carried out. Most frequently the radial artery forms the deep palmar arch with the deep palmar branch of the ulnar artery. Superficial palmar arch is the most variable. It was complete in 56 % and the most common presentation (83 %) is one that is formed by the anastomosis of the ulnar artery and the superficial palmar branch of the radial artery. The rest of the anastomosis are between ulnar artery and median artery (9%), between deep branch of radial artery and ulnar artery (5 %); triple anastomosis between ulnar artery, median artery and superficial palmar branch of the radial artery (2 %), and anastomosis between the median artery and superficial palmar branch of the radial artery without participation of the ulnar artery (1 %). The rest of the sample (44 %) can be termed as incomplete. The B1a and B1b subtypes were the most found. Two cases, one entire section of the radial artery at the wrist and the other with complete section of ulnar artery with involvement of the ulnar nerve are described. It is essential to a proper understanding of the palmar arches for a suitable surgical approach to hand. The importance of the presence or absence, as well as different variations of palmar arterial arch lies in its clinical application as surgical starting point in the treatment of trauma and other diseases in which there is engagement of arteries.

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15

Matthys, Donald R. "Endoscopic measurement using radial metrology with digital correlation." Optical Engineering 30, no. 10 (1991): 1455. http://dx.doi.org/10.1117/12.55965.

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Memarian, Yashar. "A GEOMETRIC APPROACH TO RADIAL CORRELATION TYPE PROBLEMS." Far East Journal of Applied Mathematics 98, no. 2 (February 1, 2018): 83–137. http://dx.doi.org/10.17654/am098020083.

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Mueller, Gary E. "Radial void fraction correlation for annular packed beds." AIChE Journal 45, no. 11 (November 1999): 2458–60. http://dx.doi.org/10.1002/aic.690451119.

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Mueller, Gary E. "Narrow annular packed-bed radial void fraction correlation." AIChE Journal 48, no. 3 (March 2002): 644–47. http://dx.doi.org/10.1002/aic.690480321.

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Koga, Toshikatsu. "Radial correlation limits of helium and heliumlike atoms." Zeitschrift f�r Physik D Atoms, Molecules and Clusters 37, no. 4 (July 22, 1996): 301–3. http://dx.doi.org/10.1007/s004600050044.

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Awan, Hisham, and Robert Goitz. "MRI Correlation of Radial Head Fractures and Forearm Injuries." HAND 12, no. 2 (July 7, 2016): 145–49. http://dx.doi.org/10.1177/1558944716643310.

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Background: Radial head fractures can be associated with soft tissue injuries of the forearm and wrist. The Essex-Lopresti injury can lead to significant morbidity, especially if the diagnosis is not made acutely. Better identification of such injuries is needed to allow optimal surgical treatment and prevent long-term sequelae. We used magnetic resonance imaging (MRI) to correlate the degree of soft tissue injuries with radial head fractures. Methods: Sixteen pairs of forearms with an associated radial head fracture in 15 patients prospectively underwent an MRI within 2 weeks of their injury. MRI findings were correlated with fracture type, associated soft tissue injury, and presence of symptomatic wrist pain. Results: According to the modified Mason classification, there were 8 type I, 5 type II, and 3 type III radial head fractures. Wrist pain was reported in 8 of 16 extremities, and 2 had associated wrist pathology, including an acute scaphoid fracture in 1 patient and a preexisting stage II scapholunate advanced collapse (SLAC) wrist in another patient. The MRI findings included an elbow effusion in all 16 patients, edema in the proximal third of the radius in 15 extremities, which extended to the middle third in 3 extremities, edema of the interosseous membrane (IOM) in 5 extremities, and edema of the soft tissues including the supinator and/or pronator quadratus in 13 extremities. Conclusions: Eighty percent of patients with edema of the IOM had associated wrist pain. Soft tissue injuries of the forearm did not correlate with the severity of the radial head fracture.

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Dumusque, Xavier, Cristophe Lovis, Stephane Udry, and Nuno C. Santos. "Stellar noise and planet detection. II. Radial-velocity noise induced by magnetic cycles." Proceedings of the International Astronomical Union 6, S276 (October 2010): 530–32. http://dx.doi.org/10.1017/s1743921311021090.

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AbstractFor the 451 stars of the HARPS high precision program, we study correlations between the radial-velocity (RV) variation and other parameters of the Cross Correlated Function (CCF). After a careful target selection, we found a very good correlation between the slope of the RV-activity index (log(R'HK)) correlation and the Teff for dwarf stars. This correlation allow us to correct RV from magnetic cycles given the activity index and the Teff.

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Prisiazhniuk, D., G. D. Conway, A. Krämer-Flecken, and U. Stroth. "Density fluctuation correlation measurements in ASDEX Upgrade using poloidal and radial correlation reflectometry." Plasma Physics and Controlled Fusion 60, no. 7 (May 8, 2018): 075003. http://dx.doi.org/10.1088/1361-6587/aabd0f.

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Kim, Sung Yong. "Quality Assessment Techniques Applied to Surface Radial Velocity Maps Obtained from High-Frequency Radars." Journal of Atmospheric and Oceanic Technology 32, no. 10 (October 2015): 1915–27. http://dx.doi.org/10.1175/jtech-d-14-00207.1.

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AbstractThis paper presents examples of the data quality assessment of surface radial velocity maps obtained from shore-based single and multiple high-frequency radars (HFRs) using statistical and dynamical approaches in a hindcast mode. Since a single radial velocity map contains partial information regarding a true current field, archived radial velocity data embed geophysical signals, such as tides, wind stress, and near-inertial and low-frequency variance. The spatial consistency of the geophysical signals and their dynamic relationships with driving forces are used to conduct the quality assurance and quality control of radial velocity data. For instance, spatial coherence, tidal amplitudes and phases, and wind-radial transfer functions are used to identify a spurious range and azimuthal bin. The uncertainty and signal-to-noise ratio of radial data are estimated with the standard deviation and cross correlation of paired radials sampled at nearby grid points that belong to two different radars. This review paper can benefit HFR users and operators and those who are interested in analyzing HFR-derived surface radial velocity data.

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Kobayashi, Naomi, Kosuke Sumi, Shota Higashihira, Hyonmin Choe, Taro Tezuka, Takayuki Oishi, Yohei Yukizawa, Akira Morita, and Yutaka Inaba. "Correlations and Reproducibility Between Radiographic and Radial Alpha Angles in the Evaluation of Cam Morphology." Orthopaedic Journal of Sports Medicine 8, no. 7 (July 1, 2020): 232596712093292. http://dx.doi.org/10.1177/2325967120932922.

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Background: The alpha angle used to evaluate cam morphology can be determined on different imaging views; however, 2-dimensional (2D) imaging can present limitations in terms of the reproducibility of the radial alpha angle. Recent developments in 3-dimensional (3D) high-resolution magnetic resonance imaging (MRI) have allowed detailed evaluations of the radial alpha angle. Purpose: To determine whether there are any correlations or discrepancies between the 2D alpha angle on plain radiography and the maximum radial alpha angle on 3D MRI. Study Design: Cohort study (diagnosis); Level of evidence, 2. Methods: A total of 42 hips from 39 patients (19 males, 20 females) were analyzed, including 22 hips with femoroacetabular impingement (FAI; mean age, 41 years) and 20 hips with borderline developmental dysplasia of the hip (BDDH; mean age, 43 years). Radial images were reconstructed from 3D multiple echo recombined gradient echo (MERGE) MRI. Differences in the maximum radial alpha angle on MRI between hips with FAI and BDDH were evaluated. Correlations and discrepancies between the maximum radial alpha angle on MRI and alpha angles on the anteroposterior, cross-table lateral, and 45° Dunn views of radiography were also evaluated. Results: The maximum radial alpha angle was significantly higher for hips with FAI than for hips with BDDH. On average, the greatest alpha angle on radial MRI was higher than the alpha angle on each of the 3 radiographic views for both FAI and BDDH. The 45° Dunn view revealed the smallest discrepancy for both FAI ( P = .005) and BDDH ( P = .002). The cross-table lateral view had the highest correlation with the maximum radial alpha angle for BDDH ( P < .001). Conclusion: We reconfirmed the utility of the 45° Dunn view, with it presenting the best reproducibility for the maximum radial alpha angle in the evaluation of cam morphology, while the cross-table lateral view revealed the best correlation with the maximum radial alpha angle, particularly for hips with BDDH.

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Skuljan, J., J. B. Hearnshaw, and P. L. Cottrell. "Absolute Radial Velocities by Cross-Correlation with Synthetic Spectra." International Astronomical Union Colloquium 170 (1999): 91–97. http://dx.doi.org/10.1017/s0252921100048417.

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AbstractPrecise absolute radial velocities have been measured for several hundred late-type stars at Mt John University Observatory with the 1-m telescope, fiber-fed échelle spectrograph, and Thomson CCD. Six échelle orders in the green (5000−5600 Å) are used. Many delicate steps have been undertaken in order to maintain exactly the same conditions, both in recording and reducing the spectra, over a period of 18 months. A cross-correlation technique with theoretical spectra computed by R. L. Kurucz has been chosen to determine the absolute radial velocities. Blue sky spectra have been used to monitor systematic zero-point fluctuations from one observing run to another. An additional correlation between the measured velocities and average number of A/D units in the continuum has been discovered and used for fine adjustments, significantly improving the results. A random uncertainty of 10–20 ms−1 has been achieved for stellar spectra having intrinsically constant radial velocities.

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MATTIS, DANIEL C., JIANSHENG WU, and ZIWEN FU. "CORRELATION ENERGIES IN TWO-ELECTRON IONS." Modern Physics Letters B 18, no. 05n06 (March 12, 2004): 203–6. http://dx.doi.org/10.1142/s0217984904006822.

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We estimate the relative radial and angular correlation energies in the ground state of two-electron ions, such as in the hydrogen negative ion, the helium atom and the lithium positive ion, and find they are roughly equal.

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Šimůnek, Václav, Vojtěch Hájek, Anna Prokůpková, and Josef Gallo. "Finding an imprint of solar and climatic cycles in tree rings of European beech (Fagus sylvatica L.)." Journal of Forest Science 67, No. 9 (September 15, 2021): 409–19. http://dx.doi.org/10.17221/94/2020-jfs.

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The present study is focused on European beech (Fagus sylvatica L.) growth in eastern Bohemia in the Broumovské stěny National Nature Reserve, Czech Republic. The objective of this research was to develop an evaluation of European beech radial growth in relation to solar activity (number of sunspots), air temperature in the growing season, annual precipitation and air pollution (SO<sub>2</sub> depositions). The highest positive significant correlation coefficient was found between radial growth of European beech and number of sunspots, followed by the correlation with air temperature in the growing season. The radial growth showed a negative significant correlation with SO<sub>2</sub> depositions. The correlation of the radial growth indicates that precipitation and sunspots have a lower correlation coefficient with beech growth than seasonal temperature during an air pollution disaster in the 21st solar cycle. Radial growth, precipitation total and air temperature in the growing season were processed by spectral analysis for the evaluation of periodic cycles. The 7.5- to 11-year cycles were observed in air temperature and in sunspot cycles. Precipitation and air temperature in the growing season indicate a higher frequency at 3.7-year cycles. The long-term periodicity of radial growth was influenced by both solar activity and fluctuations of growing-season air temperature.

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Hu, La, Lizhe Qin, Dongshan Wu, Huilan Xu, and Zhangqi Yang. "Radial variation in bonding performance of preservative-treated wood within Pinus elliottii trees and its relationships with wood density and adhesive penetration." BioResources 16, no. 2 (February 1, 2021): 2204–14. http://dx.doi.org/10.15376/biores.16.2.2204-2214.

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Pinus elliottii wood from different radial locations within trees was used to prepare two-layer preservative-treated wood joints with alkaline copper quaternary preservative and emulsion polymer isocyanates (EPI) or resorcinol-phenol-formaldehyde (RPF) adhesives. The radial variations in shear strength and wood failure percentage were analyzed. Radial variations in wood density and average penetration depth (AP) of adhesives were investigated to establish relationships between shear strengths and characteristics of bonded joints. The shear strengths of EPI- and RPF-bonded joints showed similar increasing trends from pith to bark, and they varied in ranges of 2.92 to 8.13 MPa and 2.03 to 7.12 MPa, respectively. The wood failure percentage of EPI joints (93% to 100%) had no significant differences in all the radial locations, but that of RPF joints (60% to 100%) showed a clear decreasing trend from pith to bark. High positive linear correlations were found between the shear strengths and wood density, and Pearson’s correlation coefficients for EPI and RPF were 0.934 (p < 0.01) and 0.931 (p < 0.01), respectively. Wood density is a very important factor influencing radial variations of bonding strengths. The correlation between the AP and shear strength was not significant at the 0.05 level.

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Gusakov, E. Z., and B. O. Yakovlev. "Two-dimensional linear theory of radial correlation reflectometry diagnostics." Plasma Physics and Controlled Fusion 44, no. 12 (November 5, 2002): 2525–37. http://dx.doi.org/10.1088/0741-3335/44/12/303.

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Mueller, Gary E. "A radial void fraction correlation for packed bed tubes." Canadian Journal of Chemical Engineering 77, no. 1 (February 1999): 132–35. http://dx.doi.org/10.1002/cjce.5450770122.

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Gusakov, E. Z., and A. Yu Popov. "Two-dimensional non-linear theory of radial correlation reflectometry." Plasma Physics and Controlled Fusion 46, no. 9 (July 13, 2004): 1393–408. http://dx.doi.org/10.1088/0741-3335/46/9/004.

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Fernández-Marina, F., T. Estrada, E. Blanco, and L. García. "Radial correlation length across magnetic islands: Simulations and experiments." Physics of Plasmas 24, no. 7 (July 2017): 072513. http://dx.doi.org/10.1063/1.4994069.

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Kudenov, Michael W., and Brett Pantalone. "Dual-beam cross-correlation spectrometer for radial velocity measurements." Applied Optics 58, no. 33 (November 20, 2019): 9310. http://dx.doi.org/10.1364/ao.58.009310.

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Bao Cheng-guang. "Radial-radial correlation and energy transfer in higher doubly excitedSe1helium states by partial-wave analysis." Physical Review A 40, no. 9 (November 1, 1989): 4849–56. http://dx.doi.org/10.1103/physreva.40.4849.

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Van de Steene, G. C., B. J. Hrivnak, and H. Van Winckel. "Radial velocity variability in post-AGB stars: V448 Lac." Proceedings of the International Astronomical Union 14, S343 (August 2018): 533–34. http://dx.doi.org/10.1017/s1743921318007214.

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AbstractTo investigate the binary hypothesis in the formation of planetary nebulae, we have been doing long-term photometry and radial velocity (RV) monitoring of bright post-AGB stars which possess bipolar or ellipsoidal nebulae but no indication of a disk in their spectral energy distribution, indicative of a binary companion. RV’s are determined by cross correlating high-resolution spectra with a line mask. Stellar variability and companions both deform the cross correlation function (CCF) and induce periodic variations in the RV. To uniformly quantify the asymmetry of the CCF from a Gaussian, we propose to fit the CCF profile with a Gauss-Hermite series and determine all CCF parameters (RV, skewness, FWHM, and depth) in one single fit. We analyze the correlation and time series of these CCF parameters for V448 Lac and conclude that its RV variability is most likely due to stellar pulsation and not to an orbiting body.

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Choi, Wan-Sun, Ji Sun Hwang, Jae-Seung Hur, Chang-Hun Lee, Joo-Hak Kim, and Kwang-Hyun Lee. "Correlation between patient-reported outcome measures and Single Assessment Numerical Evaluation score in patients treated with a volar locking plate for a distal radial fracture." Bone & Joint Journal 102-B, no. 6 (June 2020): 744–48. http://dx.doi.org/10.1302/0301-620x.102b6.bjj-2019-0859.r2.

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Aims The aim of this study was to compare patient-reported outcome measures (PROMs) and the Single Assessment Numerical Evaluation (SANE) score in patients treated with a volar locking plate for a distal radial fracture. Methods This study was a retrospective review of a prospective database of 155 patients who underwent internal fixation with a volar locking plate for a distal radial fracture between August 2014 and April 2017. Data which were collected included postoperative PROMs (Disabilities of the Arm, Shoulder, and Hand questionnaire (DASH) and Patient-Rated Wrist Evaluation (PRWE)), and SANE scores at one month (n = 153), two months (n = 155), three months (n = 144), six months (n = 128), and one year (n = 73) after operation. Patients with incomplete data were excluded from this study. Correlation and agreement between PROMs and SANE scores were evaluated. Subgroup analyses were carried out to identify correlations according to variables such as age, the length of follow-up, and subcategories of the PRWE score. Results The Pearson correlation coefficient (r) between PROMs and SANE scores was -0.76 (p < 0.001) for DASH and -0.72 (p < 0.001) for PRWE, respectively. Limits of agreement between PROMs and ‘100-SANE’ scores were met for at least 93% of the data points. In subgroup analysis, there were significant negative correlations between PROMs and SANE scores for all age groups and for follow-up of more than six months. The correlation coefficient between PRWE subcategories and SANE score was -0.67 (p < 0.001) for PRWE pain score and -0.69 (p < 0.001) for PRWE function score, respectively. Conclusion We found a significant correlation between postoperative SANE and PROMs in patients treated with a volar locking plate for a distal radial fracture. The SANE score is thus a reliable indicator of outcome for patients who undergo surgical treatment for a radial fracture. Cite this article: Bone Joint J 2020;102-B(6):744–748.

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Gritsan, Y. I., S. A. Sytnyk, V. M. Lovynska, and I. I. Tkalich. "Climatogenic reaction of Robinia pseudoacacia and Pinus sylvestris within Northern Steppe of Ukraine." Biosystems Diversity 27, no. 1 (February 26, 2019): 16–20. http://dx.doi.org/10.15421/011902.

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Climatic changes in the environment are becoming more noticeable each year. Nonetheless, trends in the reaction of radial growth of forest trees to climate change should be studied in different climatic regions due to significant local variability in climatic conditions which are specific for any particular area. We conducted a correlation analysis of the relationship between the parameters of radial increment of black locust (Robinia pseudoacacia L.) and Scots pine (Pinus sylvestris L.) and meteorological factors of the environment in forest areas located in thenorthern steppe zone of Ukraine. We performed surveys in plantations of black locust, growing in hill slope and interfluve areas and also in sandy terrace plots of Scots pine. Over the period of intense vegetatative growth, black locust requires moisture 50% higher than the norm, and Scots pine 43% higher than the norm. It was determined that maximum increment for the studied plants occurred under the influence of a combination of factors involving reduction of the air temperature by 2.6–2.7 °С below the norm for black locust and by 2.3–2.5 °С for Scots pine. During the period of lower vegetative activity, Scots pine demonstrated lower sensitivity compared to black locust. This paper provides a statistical characteristic of the radial increment of trees in the conditions of changes in meteorological factors which limit their growth. The article provides data on multiple correlation of radial increment of the tree stands in relation to growth locations; demonstrates correlation dependency of radial increment of the studied trees on the precipitation and mean monthly temperatures over different time periods and during particular months. Radial increment of Scots pine exhibited most positive correlation with the total of precipitations throughout the period. For the stands of black locust, correlation coefficients were higher and distinguished by both positive and negative values. In the current increment of this species, a negative correlation relation was observed with the total precipitation in July, August and September, and positive correlation with the remaining months of the year. By contrast, radial increment of black locust and Scots pine positively correlated with air temperature during all time periods and particular months.

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Rust, P. A., E. T. H. Ek, and S. K. Y. Tham. "Assessment of normal trapeziometacarpal joint alignment." Journal of Hand Surgery (European Volume) 42, no. 6 (February 14, 2017): 605–9. http://dx.doi.org/10.1177/1753193417690473.

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The purpose of this study was to determine the alignment of the normal trapeziometacarpal joint and any changes in its alignment with age. Radial, dorsal and dorsoradial subluxation were measured on computerized tomographic scans in 50 joints of 50 adults aged 18 to 62. There were statistically significant correlations between increasing age and dorsoradial subluxation but no significant correlation with dorsal and radial subluxation. Significant dorsoradial subluxation occurs after 46 years of age in the normal trapeziometacarpal joint. A mean dorsoradial subluxation of 21% (range 14%–30%) can be considered normal in this age group.

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Maldonado, J., D. F. Phillips, X. Dumusque, A. Collier Cameron, R. D. Haywood, A. F. Lanza, G. Micela, et al. "Temporal evolution and correlations of optical activity indicators measured in Sun-as-a-star observations." Astronomy & Astrophysics 627 (July 2019): A118. http://dx.doi.org/10.1051/0004-6361/201935233.

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Context. Understanding stellar activity in solar-type stars is crucial for the physics of stellar atmospheres as well as for ongoing exoplanet programmes. Aims. We aim to test how well we understand stellar activity using our own star, the Sun, as a test case. Methods. We performed a detailed study of the main optical activity indicators (Ca II H & K, Balmer lines, Na I D1 D2, and He I D3) measured for the Sun using the data provided by the HARPS-N solar-telescope feed at the Telescopio Nazionale Galileo. We made use of periodogram analyses to study solar rotation, and we used the pool variance technique to study the temporal evolution of active regions. The correlations between the different activity indicators as well as the correlations between activity indexes and the derived parameters from the cross-correlation technique are analysed. We also study the temporal evolution of these correlations and their possible relationship with indicators of inhomogeneities in the solar photosphere like sunspot number or radio flux values. Results. The value of the solar rotation period is found in all the activity indicators, with the only exception being Hδ. The derived values vary from 26.29 days (Hγ line) to 31.23 days (He I). From an analysis of sliding periodograms we find that in most of the activity indicators the spectral power is split into several “bands” of periods around 26 and 30 days. They might be explained by the migration of active regions between the equator and a latitude of ∼30°, spot evolution, or a combination of both effects. A typical lifetime of active regions of approximately ten rotation periods is inferred from the pooled variance diagrams, which is in agreement with previous works. We find that Hα, Hβ, Hγ, Hϵ, and He I show a significant correlation with the S index. Significant correlations between the contrast, bisector span, and the heliocentric radial velocity with the activity indexes are also found. We show that the full width at half maximum, the bisector, and the disc-integrated magnetic field correlate with the radial velocity variations. The correlation of the S index and Hα changes with time, increasing with larger sun spot numbers and solar irradiance. A similar tendency with the S index and radial velocity correlation is also present in the data. Conclusions. Our results are consistent with a scenario in which higher activity favours the correlation between the S index and the Hα activity indicators and between the S index and radial velocity variations.

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Yao, Jianping, and Guy Lebreton. "Scale invariant correlation with truncated phase-only radial harmonic filters." Optics Communications 145, no. 1-6 (January 1998): 213–19. http://dx.doi.org/10.1016/s0030-4018(97)00400-8.

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Vlad, M., F. Spineanu, J. H. Misguich, and R. Balescu. "Electrostatic turbulence with finite parallel correlation length and radial diffusion." Nuclear Fusion 42, no. 2 (February 1, 2002): 157–64. http://dx.doi.org/10.1088/0029-5515/42/2/306.

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Ghendrih, Philippe, Guilhem Dif-Pradalier, Claudia Norscini, Thomas Cartier-Michaud, Damien Estève, Xavier Garbet, Virginie Grandgirard, Guillaume Latu, Chantal Passeron, and Yanick Sarazin. "Self organisation of plasma turbulence: impact on radial correlation lengths." Journal of Physics: Conference Series 561 (November 27, 2014): 012008. http://dx.doi.org/10.1088/1742-6596/561/1/012008.

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Chengyu Jiang, Yue Li, Ning Wu, Guanghai Zhuang, and HaiTao Ma. "Radial-Trace Time–Frequency Peak Filtering Based on Correlation Integral." IEEE Geoscience and Remote Sensing Letters 11, no. 9 (September 2014): 1594–98. http://dx.doi.org/10.1109/lgrs.2014.2301834.

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Nasyrov, V. V. "Radial correlation of the helium atom in the ground state." Journal of Experimental and Theoretical Physics 125, no. 3 (September 2017): 369–71. http://dx.doi.org/10.1134/s1063776117080088.

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Qu, Hao, Tao Zhang, Xiang Han, Fei Wen, Shoubiao Zhang, Defeng Kong, Yumin Wang, et al. "Radial and poloidal correlation reflectometry on Experimental Advanced Superconducting Tokamak." Review of Scientific Instruments 86, no. 8 (August 2015): 083503. http://dx.doi.org/10.1063/1.4927683.

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Keeble, D. R. T., and K. E. Banyard. "Angular and radial correlation in doubly excited systems when 1." Journal of Physics B: Atomic, Molecular and Optical Physics 26, no. 17 (September 14, 1993): 2811–25. http://dx.doi.org/10.1088/0953-4075/26/17/015.

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Sheen, H. J., W. J. Chen, S. Y. Jeng, and T. L. Huang. "Correlation of swirl number for a radial-type swirl generator." Experimental Thermal and Fluid Science 12, no. 4 (May 1996): 444–51. http://dx.doi.org/10.1016/0894-1777(95)00135-2.

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Webber, Tracy, Shaun P. Patel, Michael Pensak, Olukemi Fajolu, Tamara D. Rozental, and Jennifer Moriatis Wolf. "Correlation Between Distal Radial Cortical Thickness and Bone Mineral Density." Journal of Hand Surgery 40, no. 3 (March 2015): 493–99. http://dx.doi.org/10.1016/j.jhsa.2014.12.015.

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Costes, Jean C., Christopher A. Watson, Ernst de Mooij, Steven H. Saar, Xavier Dumusque, Collier Cameron, David F. Phillips, et al. "Long-term stellar activity variations and their effect on radial-velocity measurements." Monthly Notices of the Royal Astronomical Society 505, no. 1 (April 26, 2021): 830–50. http://dx.doi.org/10.1093/mnras/stab1183.

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ABSTRACT Long-term stellar activity variations can affect the detectability of long-period and Earth-analogue extrasolar planets. We have, for 54 stars, analysed the long-term trend of five activity indicators: log $R^{\prime }_\mathrm{{HK}}$, the cross-correlation function (CCF) bisector span, CCF full-width-at-half-maximum, CCF contrast, and the area of the Gaussian fit to the CCF; and studied their correlation with the RVs. The sign of the correlations appears to vary as a function of stellar spectral type, and the transition in sign signals a noteworthy change in the stellar activity properties where earlier type stars appear more plage dominated. These transitions become more clearly defined when considered as a function of the convective zone depth. Therefore, it is the convective zone depth (which can be altered by stellar metallicity) that appears to be the underlying fundamental parameter driving the observed activity correlations. In addition, for most of the stars, we find that the RVs become increasingly redshifted as activity levels increase, which can be explained by the increase in the suppression of convective blueshift. However, we also find a minority of stars where the RVs become increasingly blueshifted as activity levels increase. Finally, using the correlation found between activity indicators and RVs, we removed RV signals generated by long-term changes in stellar activity. We find that performing simple cleaning of such long-term signals enables improved planet detection at longer orbital periods.

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Soulé, Peter T., and Paul A. Knapp. "Radial Growth Rate Responses of Western Juniper (Juniperus occidentalis Hook.) to Atmospheric and Climatic Changes: A Longitudinal Study from Central Oregon, USA." Forests 10, no. 12 (December 10, 2019): 1127. http://dx.doi.org/10.3390/f10121127.

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Research Highlights: In this longitudinal study, we explore the impacts of changing atmospheric composition and increasing aridity on the radial growth rates of western juniper (WJ; Juniperus occidentalis Hook). Since we sampled from study locations with minimal human agency, we can partially control for confounding influences on radial growth (e.g., grazing and logging) and better isolate the relationships between radial growth and climatic conditions. Background and Objectives: Our primary objective is to determine if carbon dioxide (CO2) enrichment continues to be a primary driving force for a tree species positively affected by increasing CO2 levels circa the late 1990s. Materials and Methods: We collected data from mature WJ trees on four minimally disturbed study sites in central Oregon and compared standardized radial growth rates to climatic conditions from 1905–2017 using correlation, moving-interval correlation, and regression techniques. Results: We found the primary climate driver of radial growth for WJ is antecedent moisture over a period of several months prior to and including the current growing season. Further, the moving-interval correlations revealed that these relationships are highly stable through time. Despite a trend toward increasing aridity manifested through significant increases in maximum temperatures during the summer growing season, WJ radial growth post-1960 exceeds growth pre-1960, especially during drought years. Our results support prior conclusions that increasing atmospheric CO2 increases water-use efficiency for this semiarid species, which allows the trees to continue to grow during climatic periods negatively associated with radial growth. Conclusions: Recent studies have shown that semiarid ecosystems are important for understanding global variations in carbon uptake from the atmosphere. As WJ woodlands cover an extensive region in western North America and have undergone rapid expansion during the 20th and 21st centuries, they may become an increasingly important carbon sink.

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Journal articles on the topic 'Radial correlation'

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