Results 11 to 20 of about 1,147,409 (263)

SR-BLITS: Sharpe ratio’s backward-looking improvement as a trading strategy

open access: yesIIMB Management Review, 2019
A common strategy for a single security or a tradeable asset is to buy-and-hold. Proposed SRBLITS that takes a position based on buy and sell signals which correspond to the maximisation of a backwards-looking Sharpe Ratio (SR) based on past returns.
Mohammed Shahid Abdulla
doaj   +1 more source

Experimental analysis of specific energy with variable deformation volume under sphere oblique impact

open access: yesMechanics & Industry, 2023
Experiments of a steel sphere oblique impact with a rubber cushion have been proceeded to research the variation laws of the specific energy at interface.
Wang Qing-Peng   +5 more
doaj   +1 more source

Exploring the mechanisms of influence of ethical leadership on employment relations

open access: yesIIMB Management Review, 2019
Alarmed by the frequent recurrence of industrial unrest, scholars in the field of employment relations have started to revisit the factors influencing employees’ perception of industrial relations climate.
Jatinder Kumar Jha, Manjari Singh
doaj   +1 more source

Vocal fold contact area [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1987
Vocal fold contact area is generally inferred from the electroglottographic (EGG) signal. To our knowledge, only one attempt has been reported to measure contact area directly [Scherer, Druker, and Titze, Vocal Fold Physiology Conference, Tokyo, Japan (1987)].
Ingo R. Titze, David Druker, Paul Durham
openaire   +1 more source

Elastic Rough Surface Contact and the Root Mean Square Slope of Measured Surfaces over Multiple Scales

open access: yesFractal and Fractional, 2021
This study investigates the predictions of the real contact area for perfectly elastic rough surfaces using a boundary element method (BEM). Sample surface measurements were used in the BEM to predict the real contact area as a function of load.
Robert L. Jackson   +3 more
doaj   +1 more source

A preliminary attempt to combine in situ CT measurements with permeability tests of fractured granite cores

open access: yesJournal of Fluid Science and Technology, 2023
We introduced a core-flooding test equipment with the triaxial cell having been made available to in situ computed tomography (CT) scanning. Water flow-through tests were conducted on 38 mm-diameter fractured granite cores containing either saw-cut or ...
Li ZHUANG   +4 more
doaj   +1 more source

Adhesion Between Rigid Indenter and Soft Rubber Layer: Influence of Roughness

open access: yesFrontiers in Mechanical Engineering, 2020
We report a series of experiments on the indentation of steel indenters into a soft layer of transparent rubber with relatively high adhesion. The roughness properties of the steel indenters are varied by undergoing preparation using sandpaper with ...
Iakov A. Lyashenko   +2 more
doaj   +1 more source

Mechanics Analysis of Rough Surface Based on Shoulder-Shoulder Contact

open access: yesApplied Sciences, 2021
Proper methods and models for mechanical analysis of rough surface can improve the theory of surface contact. When the topography parameters of two rough surfaces are similar, the contact should be considered shoulder-shoulder rather than top-top.
Qiuping Yu, Jianjun Sun, Zhengbo Ji
doaj   +1 more source

Contact areas of the tibiotalar joint [PDF]

open access: yesJournal of Orthopaedic Research, 2007
AbstractThe contact areas between the articular surfaces of the talus and tibia are essential for understanding the mobility of the ankle joint. The purpose of our study was to reveal the contact area among the superior articular surface of the trochlea tali (target surface T) and the inferior articular surface of the tibia (query surface Q) under non ...
Gunther, Windisch   +4 more
openaire   +2 more sources

Surface Hierarchy: Macroscopic and Microscopic Design Elements for Improved Sliding on Ice

open access: yesLubricants, 2021
Frictional interaction with a surface will depend on the features and topography within the contact zone. Describing this interaction is particularly complex when considering ice friction, which needs to look at both the macroscopic and microscopic ...
Karlis Agris Gross   +5 more
doaj   +1 more source

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