Results 81 to 90 of about 1,818,982 (242)

Triangular Index Ratio as an Alternative Method to the Alpha Angle for Defining the Presence of Cam Morphology: A Prospective Cohort Study

open access: yesArthritis Care &Research, EarlyView.
Objective Cam morphology, which is a significant risk factor for hip osteoarthritis, is commonly quantified by the alpha angle (AA). This study aims to explore the potential of the triangular index ratio (TIR) to quantify cam morphology on anteroposterior radiographs by assessing the association between TIR‐defined cam morphology and the development of
Jinchi Tang   +7 more
wiley   +1 more source

The “canine first technique” in maxillary impacted canines: analysis of the treatment duration and success of therapy

open access: yesFrontiers in Oral Health
ObjectivesThe goal of the study was to analyze the eruption time of the maxillary impacted canines treated with the “canine first technique” and evaluate the success rate.Materials and methodsA total of 103 patients with 131 impacted canines were treated.
Stefania Perrotta   +9 more
doaj   +1 more source

Alpha Kappa Alpha: Sisterhood and Service DVD, 2008

open access: yes, 2008
This documentary tells of AKA's founding at Howard University and celebrates the sorority's history and commitment to service and accomplishment.Archival master image scanned in reflective mode as 48-bit RGB color TIFF using Epson 11000 XL. Display image
Alpha Kappa Alpha
core   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

open access: yesInternational Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane   +3 more
wiley   +1 more source

Changes in the Hip of Youth Hockey Players over 3 Seasons as Seen on MRI and Physical Exam

open access: yesOrthopaedic Journal of Sports Medicine, 2014
Objectives: It has been reported that relative to other sports participants, ice hockey players suffer from cam femoroacetabular impingement (FAI) in higher numbers. Alpha angles have been reported to increase with the likelihood of symptomatic FAI.
Marc J. Philippon MD   +3 more
doaj   +1 more source

Letter with attachment: Paul M. Angle to Ida M. Tarbell, December 14, 1936

open access: yes, 1936
Letter with original transcript of preface to Whitney's Life on the Circuit with ...
Angle, Paul M.
core  

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

open access: yesAdvanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur   +5 more
wiley   +1 more source

Femoroacetabular Impingement Measurements Obtained From Two-Dimensional Radiographs Versus Three-Dimensional–Reconstructed Computed Tomography Images Result in Different Values

open access: yesArthroscopy, Sports Medicine, and Rehabilitation
Purpose: To compare the reliability and accuracy of radiographic measurements obtained from 2-dimensional (2D) radiographs and 3-dimensional (3D)-reconstructed computed tomography (CT) images in the assessment of femoroacetabular impingement syndrome ...
David M. Falgout, M.D.   +3 more
doaj   +1 more source

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