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Results: 138

InGaN as a Substrate for AC Photoelectrochemical Imaging.

Bo Zhou, Anirban Das, Menno J Kappers, Rachel A Oliver, Colin J Humphreys, Steffi Krause

Jan 09, 2020

AC photoelectrochemical imaging at electrolyte-semiconductor interfaces provides spatially resolved information such as surface potentials, ion concentrations and electrical impedance. In this work, thin films of InGaN/GaN were...

cell imaging light-activated electrochemistry light-addressable potentiometric sensor photoelectrochemistry

Cover Image for Differences in ground reaction waveforms between elite senior and junior academy sprinters during the block phase and first two steps

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Differences in ground reaction waveforms between elite senior and junior academy sprinters during the block phase and first two steps

Philip Graham-Smith, Steffi Colyer, Aki Salo

Jun 01, 2020

The block start and initial steps following block exit are fundamental aspects of sprinting and their development is key to junior athletes’ progression. This study assessed the difference in force production between elite...

Athletics block phase Kinetics Statistical parametric mapping track and field

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Differences in ground reaction waveforms between elite senior and junior academy sprinters during the block phase and first two steps

Philip Graham-Smith, Steffi Colyer, Aki Salo

Jun 01, 2020

Athletics block phase Kinetics Statistical parametric mapping track and field

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Interbank lending and the spread of bank failures

Andreas Krause, Simone Giansante

Aug 31, 2012

We model a stylized banking system where banks are characterized by the amount of capital, cash reserves and their exposure to the interbank loan market as borrowers as well as lenders. A network of interbank lending is...

Interbank loans Banking crises systemic risk Network topology Tiering “Too big to fail”

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Bank Demand for Central Bank Liquidity and its Impact on Interbank Markets

Andreas Krause

Dec 31, 2021

We develop a model of monetary policy implementation in which banks bid for liquidity provided by the central bank in fixed rate auctions, considering liquidity injections and extractions as well as the impact of a subsequent...

Bid shading Central bank operation Core–periphery network Fixed rate auction Interbank network Multi-unit auction Variable rate auction

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Learning and herding using case-based decisions with local interactions

Andreas Krause

May 01, 2009

We evaluate repeated decisions of individuals using a variant of the case-based decision theory (CBDT), where individuals base their decisions on their own past experience and the experience of neighboring individuals. Looking...

Decision Making Economics SIMULATION

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Bank Demand for Central Bank Liquidity and its Impact on Interbank Markets

Andreas Krause

Dec 31, 2021

Bid shading Central bank operation Core–periphery network Fixed rate auction Interbank network Multi-unit auction Variable rate auction

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Learning and herding using case-based decisions with local interactions

Andreas Krause

May 01, 2009

Decision Making Economics SIMULATION

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The Effect of Dietary Nutrition on the Regeneration of Ambystoma mexicanum

Samuel Krause

Jan 01, 0001

Ambystoma mexicanum, or the Axolotl, possesses an intriguing ability to regenerate many structures, including but not limited to vertebral structures, organs, and even portions of their brains. Previous research has shown that...

Axolotl Regeneration Diet Nutrition Ambystoma mexicanum Biology Life Sciences

Published by: Ursinus College

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Balancing Liquidity and Returns through Interbank Markets

Di Xiao, Andreas Krause

Mar 31, 2023

In this article, we develop a model of interbank lending based on liquidity and return on equity considerations of homogeneous banks. We derive the reservation prices of interbank lending and its properties before exploring...

Cover Image for Neuroimaging in social anxiety disorder—a meta-analytic review resulting in a new neurofunctional model.

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How sprinters accelerate beyond the velocity plateau of soccer players

Steffi Colyer, Ryu Nagahara, Yohei Takai, Aki Salo

Dec 01, 2018

Forces applied to the ground during sprinting are vital to performance. This study aimed to understand how specific aspects of ground reaction force waveforms allow some individuals to continue to accelerate beyond the...

1D analysis running velocity Soccer Statistical parametric mapping t test track and field

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Network-based computational techniques to determine the risk drivers of bank failures during a systemic banking crisis

Andreas Krause, Simone Giansante

Jun 30, 2018

This paper employs a computational model of solvency and liquidity contagion assessing the vulnerability of banks to systemic risk. We find that the main risk drivers relate to the financial connections a bank has and the market...

Solvency liquidity Interbank loans Network topology Banking crises systemic risk systemic crisis bank failure

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Associations between ground reaction force waveforms and sprint start performance

Steffi Colyer, P Graham-Smith, Aki Salo

Oct 01, 2019

Ground reaction forces produced on the blocks determine an athlete’s centre of mass motion during the sprint start, which is crucial to sprint performance. This study aimed to understand how force waveforms are associated...

Centre of mass Kinetics sport biomechanics sprint running starting blocks track-and-field athletics

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Social capital configuration, legal bonds and performance in buyer-supplier relationships

Sinead Carey, B Lawson, D R Krause

May 01, 2011

Academics have increasingly recognized the benefits derived from social networks embedded within companies' buyer-supplier relationships. However, prior research has only examined the influence of social capital elements on...

buyer-supplier relationships social capital theory performance

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Physical predictors of elite skeleton start performance

Steffi Colyer, Keith Stokes, James Bilzon, Marco Cardinale, Aki Salo

Jan 01, 2017

Purpose: An extensive battery of physical tests is typically employed to evaluate athletic status and/or development often resulting in a multitude of output variables. We aimed to identify independent physical predictors...

Athletes testing multivariate PCA validation

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Kinetic demands of sprinting shift across the acceleration phase

Steffi L. Colyer, Ryu Nagahara, Aki I.T. Salo

Jun 13, 2018

A novel approach of analyzing complete ground reaction force waveforms rather than discrete kinetic variables can provide new insight to sprint biomechanics. This study aimed to understand how these waveforms are associated...

1D analysis SPM Regression running velocity track and field

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Balancing Liquidity and Returns through Interbank Markets

Di Xiao, Andreas Krause

Mar 31, 2023

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Detecting meaningful body composition changes in athletes using dual energy X-ray absorptiometry

Steffi Colyer, Simon Roberts, Dylan Thompson, Keith Stokes, James Bilzon, Aki Salo, Jonathan Robinson

Mar 30, 2016

Dual-energy X-ray absorptiometry (DXA) imaging is considered to provide a valid and reliable estimation of body composition when stringent scanning protocols are adopted. However, applied practitioners are not always able to...

DXA Fat mass lean mass performance Reliability Scanning electrochemical microscopy (SECM)