Results 121 to 130 of about 466,925 (163)
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Surface Stresses in Cold Forward Extrusion
CIRP Annals, 1983Actual friction conditions are normally rather difficult to determine in metal forming operations. However, they have large influence on tool stresses and it is therefore of great importance to be able to estimate them. Based upon a general theoretical model for friction at high normal pressures, this paper shows how the calculation of friction stress ...
N. Bay, T. Wanheim
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Beyond the classic VTA: feeding stress forward
2023Chronic stress has clear effects on the brain, and exacerbates many symptoms of psychiatric illness. Dopamine (DA) dysregulation, which is involved in many psychiatric conditions, is implicated in emotional dysregulation through amygdala circuits. Corticotropin releasing factor (CRF) is a stress-activated neuromodulator that modulates the DA system ...
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A soft single-switched forward converter with low stresses
7th IEEE International Power Electronics Congress. Technical Proceedings. CIEP 2000 (Cat. No.00TH8529), 2002This paper presents a soft single-switched forward with low current and voltage stresses. This converter operates with a nondissipative snubber in ZCS mode at turn on and ZVS mode at turning. The output voltage is controlled using the PWM technique. Operating principles and simulation results are presented. A detailed theoretical study and experimental
E. Soares da Silva +4 more
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Investigations on residual stress generation in full-forward-extrusion
Production Engineering, 2019Within cold-forming processes, the influence of forming induced residual stresses is a critical issue regarding the life-time behaviour of the formed components. However, a targeted use of forming-induced residual stresses is also capable to improve the components properties.
Philipp Landkammer +4 more
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The Forward Testing Effect is Immune to Acute Psychosocial Encoding/Retrieval Stress
Experimental Psychology, 2020Abstract. The forward testing effect (FTE) refers to the finding that testing of previously studied information enhances memory for subsequently studied other information. Previous research demonstrated that the FTE is a robust phenomenon that generalizes across different materials and populations.
Bernhard Pastötter +3 more
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Traumatic Stress Disorders: Looking Back and Moving Forward
2012AbstractThis chapter highlights some of the advances in traumatic stress disorders that have been described by contributors of this volume. The chapter also describes areas that will be important for the field to address in the years to come. These areas include advances in the classification of traumatic stress disorders, advances in biological and ...
Denise M. Sloan, J. Gayle Beck
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Development of a Life Model for Light Emitting Diodes Stressed by Forward Current
IEEE Transactions on Reliability, 2014This paper illustrates the development and the experimental validation of a life model for light emitting diodes (LEDs) able to predict the time to failure under different stress conditions associated with the value and time dependence of applied forward current.
ALBERTINI, ANDREA +3 more
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Credit Portfolio Models in the Presence of Forward-Looking Stress Events
SSRN Electronic Journal, 2012We describe a method to improve credit portfolio models based on the Merton model by adding to the underlying distributions forward-looking tails deducted through the Bayesian Networks technology. Given the forward-looking stance of the approach, its results give a better quanti ed picture of the vulnerabilities of an institution under extreme stress ...
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Study of forward AC stress degradation of GaN-on-Si Schottky diodes
Microelectronics Reliability, 2018Abstract Forward AC stress and relaxation have been performed on GaN-on-Si Schottky diodes to study the shift of diode characteristics such as threshold voltage. Influence of frequency and length of first anode field plate are studied. PBTI measurement performed on HEMTs with gate similar to the first anode field plate rules out the degradation of ...
Lorin, T. +6 more
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Visualization of endoplasmic reticulum stressed cells for forward genetic studies in plants
Journal of Plant Physiology, 2015In eukaryotes, various cellular events are attended by a risk of triggering stress in the endoplasmic reticulum (ER). Such risks are assumed to be minimized by sophisticated regulation systems, but the nature of these systems remains largely unknown in plants.
Shimpei, Hayashi, Fumio, Takaiwa
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