scholarly journals Hidden spin-orbital hexagonal ordering induced by strong correlations in LiVS2

2020 ◽  
Vol 102 (11) ◽  
Author(s):  
L. Boehnke ◽  
A. I. Lichtenstein ◽  
M. I. Katsnelson ◽  
F. Lechermann
Keyword(s):  
Strong Correlations ◽  
Spin Orbital ◽  
Hexagonal Ordering

scholarly journals Kondo effects in small-bandgap carbon nanotube quantum dots

2020 ◽  
Vol 11 ◽  
pp. 1873-1890
Author(s):  
Patryk Florków ◽  
Damian Krychowski ◽  
Stanisław Lipiński
Keyword(s):  
Quantum Dots ◽  
Carbon Nanotube ◽  
Magnetic Fields ◽  
Kondo Effect ◽  
Mean Field ◽  
Zero Field ◽  
Strong Correlations ◽  
Many Body ◽  
Spin Orbital ◽  
Kondo Effects

We study the magnetoconductance of small-bandgap carbon nanotube quantum dots in the presence of spin–orbit coupling in the strong-correlations regime. A finite-U slave-boson mean-field approach is used to study many-body effects. Different degeneracies are restored in a magnetic field and Kondo effects of different symmetries arise, including SU(3) effects of different types. Full spin–orbital degeneracy might be recovered at zero field and, correspondingly, the SU(4) Kondo effect sets in. We point out the possibility of the occurrence of electron–hole Kondo effects in slanting magnetic fields, which we predict to occur in magnetic fields with an orientation close to perpendicular. When the field approaches a transverse orientation a crossover from SU(2) or SU(3) symmetry into SU(4) is observed.

Interrelationships of factors of social development are more complex than Life History Theory predicts

2019 ◽  
Vol 42 ◽  
Author(s):  
Boris Kotchoubey
Keyword(s):  
Life History ◽  
Social Development ◽  
Life History Theory ◽  
Strong Correlations ◽  
Behavioral Features

Abstract Life History Theory (LHT) predicts a monotonous relationship between affluence and the rate of innovations and strong correlations within a cluster of behavioral features. Although both predictions can be true in specific cases, they are incorrect in general. Therefore, the author's explanations may be right, but they do not prove LHT and cannot be generalized to other apparently similar processes.

Dielectronic Recombination in the Average-Atom Model

1988 ◽  
Vol 102 ◽  
pp. 215
Author(s):  
R.M. More ◽  
G.B. Zimmerman ◽  
Z. Zinamon
Keyword(s):  
Detailed Balance ◽  
Systematic Errors ◽  
Dielectronic Recombination ◽  
Rate Equations ◽  
Strong Correlations ◽  
Dense Plasmas ◽  
Atom Model ◽  
New Feature ◽  
Average Atom Model ◽  
Attachment Process

Autoionization and dielectronic attachment are usually omitted from rate equations for the non–LTE average–atom model, causing systematic errors in predicted ionization states and electronic populations for atoms in hot dense plasmas produced by laser irradiation of solid targets. We formulate a method by which dielectronic recombination can be included in average–atom calculations without conflict with the principle of detailed balance. The essential new feature in this extended average atom model is a treatment of strong correlations of electron populations induced by the dielectronic attachment process.

Intrinsic Characteristics of Quasars Redshifts

2014 ◽  
Vol 4 (3) ◽  
pp. 655-661
Author(s):  
Waleed Elsanhoury
Keyword(s):  
Absolute Magnitude ◽  
Sloan Digital Sky Survey ◽  
Strong Correlations ◽  
Sky Survey

Using Sloan Digital Sky Survey SDSS catalog, some intrinsic characteristics of Quasars (10,000 points) are developed of these are the strong correlations between redshifts and other parameters, e.g. combined magnitude, luminosity, and absolute magnitude .Moreover ,the Karlsson peak of our sample is also computed.

The Patient-Reported Outcomes Measurement Information System in spine surgery: a systematic review

2019 ◽  
Vol 30 (3) ◽  
pp. 405-413 ◽  
Author(s):  
Brittany E. Haws ◽  
Benjamin Khechen ◽  
Mundeep S. Bawa ◽  
Dil V. Patel ◽  
Harmeet S. Bawa ◽  
...  
Keyword(s):  
Systematic Review ◽  
Information System ◽  
Patient Reported Outcomes ◽  
Neck Disability Index ◽  
Measurement Information ◽  
Strong Correlations ◽  
Comprehensive Overview ◽  
Outcomes Measurement ◽  
Patient Reported ◽  
Measurement Information System

OBJECTIVEThe Patient-Reported Outcomes Measurement Information System (PROMIS) was developed to provide a standardized measure of clinical outcomes that is valid and reliable across a variety of patient populations. PROMIS has exhibited strong correlations with many legacy patient-reported outcome (PRO) measures. However, it is unclear to what extent PROMIS has been used within the spine literature. In this context, the purpose of this systematic review was to provide a comprehensive overview of the PROMIS literature for spine-specific populations that can be used to inform clinicians and guide future work. Specifically, the authors aimed to 1) evaluate publication trends of PROMIS in the spine literature, 2) assess how studies have used PROMIS, and 3) determine the correlations of PROMIS domains with legacy PROs as reported for spine populations.METHODSStudies reporting PROMIS scores among spine populations were identified from PubMed/MEDLINE and a review of reference lists from obtained studies. Articles were excluded if they did not report original results, or if the study population was not evaluated or treated for spine-related complaints. Characteristics of each study and journal in which it was published were recorded. Correlation of PROMIS to legacy PROs was reported with 0.1 ≤ |r| < 0.3, 0.3 ≤ |r| < 0.5, and |r| ≥ 0.5 indicating weak, moderate, and strong correlations, respectively.RESULTSTwenty-one articles were included in this analysis. Twelve studies assessed the validity of PROMIS whereas 9 used PROMIS as an outcome measure. The first study discussing PROMIS in patients with spine disorders was published in 2012, whereas the majority were published in 2017. The most common PROMIS domain used was Pain Interference. Assessments of PROMIS validity were most frequently performed with the Neck Disability Index. PROMIS domains demonstrated moderate to strong correlations with the legacy PROs that were evaluated. Studies assessing the validity of PROMIS exhibited substantial variability in PROMIS domains and legacy PROs used for comparisons.CONCLUSIONSThere has been a recent increase in the use of PROMIS within the spine literature. However, only a minority of studies have incorporated PROMIS for its intended use as an outcomes measure. Overall, PROMIS has exhibited moderate to strong correlations with a majority of legacy PROs used in the spine literature. These results suggest that PROMIS can be effective in the assessment and tracking of PROs among spine populations.

A retrospective audit of antibiotic prescriptions in a Lebanese Hospital

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Mohamad Ibrahim ◽  
Zeinab Bazzi
Keyword(s):  
Epidemiological Data ◽  
Antibiotic Use ◽  
Antibiotic Prescribing ◽  
Team Approach ◽  
Strong Correlations ◽  
Prescribing Practices ◽  
Antimicrobial Drugs ◽  
Stewardship Program ◽  
Retrospective Audit ◽  
Attending Physician

Despite the frequent alarms that have been published about the adverse effects of antibiotic use and misuse, physicians prescribe to patients approximately fifty percent of unnecessary antimicrobials. In an attempt to decrease the emergence of antimicrobial resistance and increase awareness, a team approach is required to address this prescribing phenomenon in a feasible manner. A retrospective study was done at a one-hundred-forty-bed hospital with a representative sample size of 368 patients. Patient data was collected and analyzed by a stewardship team. The overall antibiotic inappropriate rate was 45.8%, which is relatively high and consistent with the findings of other studies mentioned in the literature. This study aimed to provide baseline epidemiological data on the use of antibiotics in a Lebanese hospital and has revealed several notable patterns of antibiotic prescribing practices among Lebanese physicians such as the use of antimicrobial drugs example penicillin was consistently high. Strong correlations were identified between the type of attending physician and antibiotic appropriateness. These findings will be important in constructing an antimicrobial stewardship program to reduce antibiotic misuse.

Niobocene Dichloride and Niobocene Diiodide: Electronic Absorption Spectra and Electron Spin Resonance

1998 ◽  
Vol 63 (5) ◽  
pp. 628-635 ◽  
Author(s):  
Jana Holubová ◽  
Zdeněk Černošek ◽  
Ivan Pavlík
Keyword(s):  
Absorption Spectra ◽  
Electronic Absorption ◽  
Electronic Absorption Spectra ◽  
Point Group ◽  
Esr Spectra ◽  
Ligand Field ◽  
Orbital Interaction ◽  
Symmetry Point Group ◽  
Spin Orbital ◽  
Halide Ligands

The effect of the halide ligand on the bonding of niobium in niobocene dichloride and niobocene diiodide was investigated. The electronic absorption spectra of the two compounds in the range of d-d transitions were resolved into four bands corresponding to transitions of the d1 electron between five frontier orbitals in a molecule of symmetry point group C2v. The energies of the frontier molecular orbitals were determined relatively to the energy of the orbitals in the spherically symmetric ligand field formed by the appropriate halide ligands. The effect of the halide ligands on the spin-orbital interaction of the HOMO orbital is discussed qualitatively on the basis the ESR spectra.

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