Results 101 to 110 of about 947,734 (317)

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

Arthritis 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, Fleur Boel, Michiel M. A. van Buuren, Noortje S. Riedstra, Myrthe A. van den Berg, Jos Runhaar, Sita Bierma‐Zeinstra, Rintje Agricola   +7 more
wiley   +1 more source

Rapid rotation of micron and submicron dielectric particles measured using optical tweezers

, 2003
We demonstrate the use of a laser trap (‘optical tweezers’) and back-focal-plane position detector to measure rapid rotation in aqueous solution of single particles with sizes in the vicinity of 1 μm.
Berry, RM, Leake, Mark C., Rowe, Alexander D., Morgan, Hywel, Rowe, AD, Berry, Richard, Morgan, H., Leake, MC, Berry, Richard M., Berry, R.M., Leake, M.C., Morgan, H, Rowe, A.D., Leake, Mark   +13 more
core   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Evidence map of crop diversification strategies at the global scale

Environmental Research Letters, 2019
The diversification of cropping systems encompasses different strategies that may help maintain or enhance the sustainability of agriculture. Thousands of experiments have been carried out around the world since almost five decades to evaluate and ...
Damien Beillouin, Tamara Ben-Ari, David Makowski   +2 more
doaj   +1 more source

Rotation invariant matching of partial shoeprints [PDF]

, 2009
In this paper, we propose a solution for the problem of rotated partial shoeprint retrieval, based on the combined use of local points of interest and SIFT descriptor. Once the generated features are encoded using SIFT descriptor, matching is carried out
Bouridane, A., A. Bouridane, Laadjel, Moussadek, Nibouche, O., M. Laadjel, Bouridane, Ahmed, Nibouche, Omar, M. Gueham, Crookes, Daniel, Gueham, M., Laadjel, M., O. Nibouche   +11 more
core   +1 more source

Experimental Evaluation of 100Cr6 Steel Microindented Surfaces Under Lubricated Nonconformal Point Contacts

Advanced Engineering Materials, EarlyView.
The tribological behavior of 100Cr6 steel spheres textured via Vickers microindentation is evaluated under lubricated sliding by varying both dimple size and density. Fine and dense textures significantly reduce friction across all lubrication regimes, while large dimples increase it.
Farideh Davoodi, Pasquale Guglielmi, Gianfranco Palumbo, Giuseppe Carbone   +3 more
wiley   +1 more source

Investigation of factor rotation routines in principal component analysis of stock returns

, 2014
Includes bibliographical references.This paper investigates rotation routines that will produce uncorrelated rotated principal components for a dataset of stock returns, in an attempt to identify the macroeconomic factors that best explain the ...
Weimar, Nicole
core  

Crop rotation phase has a greater impact on soil biology than crop rotation diversity

The effect of plant diversity on the belowground soil food web remains poorly understood. In this study the soil microbial community structure and biomass, and the abundance of microfauna, mesofauna, and macrofauna were assessed at three levels of crop ...
Thomas, Sion, Struijk, M., Leigh, Sam, Mortimer, Simon, Ashwood, F., Degani, Erika, Ashwood, Frank, Sizmur, Tom, Leigh, S. G., Whitmore, A. P., Thomas, S., Sizmur, T., Clark, Suzanne J., Mortimer, S. R., Bowen, Emma, Bowen, E., Struijk, Marijke, Degani, E., Whitmore, Andrew P., Clark, S. J.   +19 more
core   +1 more source

Laser Powder Bed Fusion of Alumina: Effects of Scanning Strategies on External and Internal Defects

Advanced Engineering Materials, EarlyView.
This study investigates how scanning strategies affect pure alumina in laser powder bed fusion. Linear 45° scanning yields uniform surfaces but high porosity, while the island‐concentric strategy provides higher density with through‐holes favorable for infiltration. Findings highlight pathways toward optimizing defect‐free alumina parts.
Mohamed Abdelmoula, Gökhan Küçüktürk, Duran Kaya, David Grossin, Christophe Tenailleau, Benjamin Duployer, Enrique Juste, Fabrice Petit   +7 more
wiley   +1 more source

Endogenous Bid Rotation in Repeated Auctions [PDF]

I study collusion between two bidders in a general symmetric IPV repeated auction, without communication, side transfers, or public randomization. I construct a collusive scheme, endogenous bid rotation, that generates a payoff larger than the bid ...
Rachmilevitch, Shiran
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