Results 111 to 120 of about 277,674 (289)

Effect of Oxygen Content on Surface and Subsurface Integrity During Turning of Ti–6Al–4V

Advanced Engineering Materials, EarlyView.
This study examines how oxygen content in the ambient atmosphere affects the surface and subsurface properties of Ti–6Al–4V during turning. Results show that oxygen does not influence surface roughness. However, machining in an extremely high vacuum‐adequate atmosphere increases surface hardness by up to 7.8% and induces compressive residual stresses ...
Benjamin Bergmann, Berend Denkena, Hilke Petersen, Florian Schaper   +3 more
wiley   +1 more source

Dynamic Modelling and Experimental Investigation of an Active–Passive Variable Stiffness Actuator

Actuators
To overcome the limitations imposed by the low flexible angle of conventional robots, an active–passive variable stiffness elastic actuator (APVSA) is investigated and a nonlinear dynamic model for the APVSA is established, considering the factors of the
Caidong Wang, Zhou Zhang, Yanqiu Xiao, Pengfei Gao, Xiaoli Liu   +4 more
doaj   +1 more source

Modeling of manufacturer and retailer cooperative income considering advertising costs [PDF]

Marketing i Menedžment Innovacij, 2013
The paper represents logical block diagram of cooperative advertising costs adjustment in manufacturer and retailers logistics chain. Manufacturer and retailers joint interaction profit is considered provided linear demand function and nonlinear response
A.O. Zavirukha, T.V. Bludova
doaj  

Forward Exchange Rate Puzzle: Joining the Missing Pieces in the Rand-US Dollar Exchange Market [PDF]

The Unbiased Forward Rate Hypothesis (UFRH) stipulates that the forward rates should be a perfect predictor for the future spot rates. A number of studies have tested the UFRH and foreign market efficiency and concluded that the hypothesis does not hold.
Lumengo Bonga-Bonga
core   +1 more source

Electrical Conductivities of Conductors, Semiconductors, and Their Mixtures at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This article presents a comprehensive review of temperature‐dependent electrical conductivity data for multiple material classes at elevated temperatures, highlighting a persistent conductivity gap between metals and semiconductors in the range of 102$\left(10\right)^{2}$– 107$\left(10\right)^{7}$ S/m. Metal–ceramic irregular metamaterials are proposed
Valentina Torres Nieto, Marcia A. Cooper
wiley   +1 more source

Nonlinear stock prices adjustment in the G7 countries [PDF]

This paper aims to modeling stock prices adjustment dynamics toward their fundamentals. We used the class of Switching Transition Error Correction Models (STECM) and we showed that stock prices deviations toward fundamentals could be characterized by ...
Fredj Jawadi, Georges Prat
core  

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Direct Adaptive Fuzzy Control with Prescribed Tracking Accuracy for Orbit Adjustment of Satellites

Actuators
In this paper, we investigate the orbit-adjustment problem of satellite systems in the presence of nonlinear uncertainties in kinematics and dynamics. We propose a novel direct adaptive fuzzy control scheme with prescribed tracking accuracy to address ...
Weijun Yang, Shizhuan Zou, Liang Li, Kai Huang, Guanyu Lai   +4 more
doaj   +1 more source

The persistence of bank profits: what the stock market implies [PDF]

This paper examines the speed with which abnormal economic profits vanish in the U.S. banking industry. A model is developed to infer expected speeds of profit adjustment from stock market and financial accounting data, deriving the rate of adjustment ...
Mark E. Levonian
core  

Four‐Point Bending Tests at High Temperatures on Commercial MgO‐C Refractory Bricks with and Without Recyclate Considering Different Carbon Contents

Advanced Engineering Materials, EarlyView.
Four‐point bending tests are conducted in an argon atmosphere on commercial MgO‐C brick grades with and without MgO‐C recyclate from room temperature up to 1300 °C. No detrimental effect of the MgO‐C recyclates on bending strength is found. Instead, a decisive influence of the total carbon content is observed, with lower total carbon contents ...
Alexander Schramm, Lukas Knöchel, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +5 more
wiley   +1 more source