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Cover Image for Transmission Channels of Systemic Risk and Contagion in the European Financial Network View Article
Transmission Channels of Systemic Risk and Contagion in the European Financial Network
Nikos Paltalidis, Dimitrios Gounopoulos, Renatas Kizys, Yiannis Koutelidakis
Jun 01, 2015
We investigate systemic risk and how financial contagion propagates within the euro area banking system by employing the Maximum Entropy method. The study captures multiple snapshots of a dynamic financial network and uses...
Cover Image for Second-Order <i>L</i> ∞ Variational Problems and the ∞-Polylaplacian View Article
Second-Order <i>L</i> ∞ Variational Problems and the ∞-Polylaplacian
Nikos Katzourakis, Tristan Pryer
Apr 01, 2020

In this paper we initiate the study of second-order variational problems in L ∞, seeking to minimise the L ∞ norm of a function of the hessian.We also derive and study the respective PDE arising as the...

math.AP math.NA generalised solutions fully nonlinear equations Baire category method convex integration young measures
Cover Image for On the numerical approximation of <i>p</i>-Biharmonic and ∞-Biharmonic functions View Article
On the numerical approximation of <i>p</i>-Biharmonic and ∞-Biharmonic functions
Nikos Katzourakis, Tristan Pryer
Dec 24, 2018
math.NA math.AP
Cover Image for Existence, uniqueness and structure of second order absolute minimisers View Article
Existence, uniqueness and structure of second order absolute minimisers
Nikos Katzourakis, Roger Moser
Mar 01, 2019
Let Ω⊆Rn be a bounded open C1,1 set. In this paper we prove the existence of a unique second order absolute minimiser u∞ of the functional
E∞(u,O):=∥F(⋅,Δu)∥L∞(O),O⊆Ωmeasurable,
with prescribed boundary conditions for u...
Cover Image for Reaching for Yield and the Diabolic Loop in a Monetary Union View Article
Reaching for Yield and the Diabolic Loop in a Monetary Union
Sabri Boubaker, Dimitrios Gounopoulos, Duc Nguyen, Nikos Paltalidis
Nov 30, 2020

We use the theoretical framework of Acharya and Naqvi (2019) to introduce a macro-financial model where the “reaching for yield” incentivized by a loosening monetary policy in the United States mitigates the diabolic loop in...

Diabolic loop Financial intermediation sovereign debt
Cover Image for Effects of motivation and depletion on the ability to resist the temptation to avoid physical activity View Article
Effects of motivation and depletion on the ability to resist the temptation to avoid physical activity
Peter C. Rouse, Nikos Ntoumanis, Joan L. Duda
Jan 01, 0001

Understanding the psychological processes that underpin the limited self-control resource could have important consequences for health behavior change interventions. The present study employs a 2 × 2 (autonomous/controlling ×...

counteractive self-control ego depletion motivation physical activity temptation
Cover Image for Existence, uniqueness and structure of second order absolute minimisers View Article
Existence, uniqueness and structure of second order absolute minimisers
Nikos Katzourakis, Roger Moser
Mar 01, 2019
Let Ω⊆Rn be a bounded open C1,1 set. In this paper we prove the existence of a unique second order absolute minimiser u∞ of the functional
E∞(u,O):=∥F(⋅,Δu)∥L∞(O),O⊆Ωmeasurable,
with prescribed boundary conditions for u...
Cover Image for Second-Order <i>L</i> ∞ Variational Problems and the ∞-Polylaplacian View Article
Second-Order <i>L</i> ∞ Variational Problems and the ∞-Polylaplacian
Nikos Katzourakis, Tristan Pryer
Apr 01, 2020

In this paper we initiate the study of second-order variational problems in L ∞, seeking to minimise the L ∞ norm of a function of the hessian.We also derive and study the respective PDE arising as the...

math.AP math.NA generalised solutions fully nonlinear equations Baire category method convex integration young measures
Cover Image for Effects of motivation and depletion on the ability to resist the temptation to avoid physical activity View Article
Effects of motivation and depletion on the ability to resist the temptation to avoid physical activity
Peter C. Rouse, Nikos Ntoumanis, Joan L. Duda
Jan 01, 0001

Understanding the psychological processes that underpin the limited self-control resource could have important consequences for health behavior change interventions. The present study employs a 2 × 2 (autonomous/controlling ×...

counteractive self-control ego depletion motivation physical activity temptation
Cover Image for Assessing the effects of unconventional monetary policy and low interest rates on pension fund risk incentives View Article
Assessing the effects of unconventional monetary policy and low interest rates on pension fund risk incentives
Sabri Boubaker, Dimitrios Gounopoulos, Duc Nguyen, Nikos Paltalidis
Apr 30, 2017
In this article the role of unconventional monetary policy and low interest rates are amplified as one of a series of components of possible explanations on US pension funds risk taking and asset allocation behavior. We quantify...
Cover Image for On the numerical approximation of <i>p</i>-Biharmonic and ∞-Biharmonic functions View Article
On the numerical approximation of <i>p</i>-Biharmonic and ∞-Biharmonic functions
Nikos Katzourakis, Tristan Pryer
Dec 24, 2018
math.NA math.AP
Cover Image for When the going gets tough View Article
When the going gets tough
Nikos Ntoumanis, Laura Healy, Constantine Sedikides, Joan Duda, Brandon Stewart, Alison Smith, Johanna Bond
Jun 01, 2014
No prior research has examined how motivation for goal striving influences persistence in the face of increasing goal difficulty. This research examined the role of self-reported (Study 1) and primed (Study 2) autonomous and...
Cover Image for Transmission Channels of Systemic Risk and Contagion in the European Financial Network View Article
Transmission Channels of Systemic Risk and Contagion in the European Financial Network
Nikos Paltalidis, Dimitrios Gounopoulos, Renatas Kizys, Yiannis Koutelidakis
Jun 01, 2015
We investigate systemic risk and how financial contagion propagates within the euro area banking system by employing the Maximum Entropy method. The study captures multiple snapshots of a dynamic financial network and uses...
Cover Image for On reconciling macro and micro energy transport forecasts for strategic decision making in the tanker industry View Article
On reconciling macro and micro energy transport forecasts for strategic decision making in the tanker industry
Wessam Abouarghoub, Nikos Nomikos, Fotios Petropoulos
May 01, 2018
We propose the use of hierarchical structures for forecasting freight earnings. Hierarchical time series approaches are applied in the dry-bulk and tanker markets to identify the most suitable strategy for forecasting freight...
Forecasting Freight earnings Freight revenues Hierarchical aggregation Shipping energy
Cover Image for Reaching for Yield and the Diabolic Loop in a Monetary Union View Article
Reaching for Yield and the Diabolic Loop in a Monetary Union
Sabri Boubaker, Dimitrios Gounopoulos, Duc Nguyen, Nikos Paltalidis
Nov 30, 2020

We use the theoretical framework of Acharya and Naqvi (2019) to introduce a macro-financial model where the “reaching for yield” incentivized by a loosening monetary policy in the United States mitigates the diabolic loop in...

Diabolic loop Financial intermediation sovereign debt
Cover Image for A Ship Digital Twin for Safe and Sustainable Ship Operations View Chapter
A Ship Digital Twin for Safe and Sustainable Ship Operations
Spyros Hirdaris, Mingyang Zhang, Nikos Tsoulakos, Pentti Kujala
Apr 09, 2024
Shipping is responsible for over 90% of global trade. Although it is generally considered a safe and clean mode of transportation, it still has a significant impact on the environment. Thus, state-of-the-art models that may...
Sustainable Development Business and Management Operations and Service Management Computer Science and Information Technology Life Sciences
Published by: IGI Global Scientific Publishing
Cover Image for Assessing the effects of unconventional monetary policy and low interest rates on pension fund risk incentives View Article
Assessing the effects of unconventional monetary policy and low interest rates on pension fund risk incentives
Sabri Boubaker, Dimitrios Gounopoulos, Duc Nguyen, Nikos Paltalidis
Apr 30, 2017
In this article the role of unconventional monetary policy and low interest rates are amplified as one of a series of components of possible explanations on US pension funds risk taking and asset allocation behavior. We quantify...
Cover Image for On reconciling macro and micro energy transport forecasts for strategic decision making in the tanker industry View Article
On reconciling macro and micro energy transport forecasts for strategic decision making in the tanker industry
Wessam Abouarghoub, Nikos Nomikos, Fotios Petropoulos
May 01, 2018
We propose the use of hierarchical structures for forecasting freight earnings. Hierarchical time series approaches are applied in the dry-bulk and tanker markets to identify the most suitable strategy for forecasting freight...
Forecasting Freight earnings Freight revenues Hierarchical aggregation Shipping energy
Cover Image for In the beginning View Article
In the beginning
Peter C. Rouse, Nikos Ntoumanis, Joan L. Duda, Kate Jolly, Geoffrey C. Williams
Jan 01, 0001

Self-determination theory (Deci & Ryan, 2000, Intrinsic motivation and self-determination in human behaviour. New York: Plenum Publishing) highlights the impact autonomy supportive environments can have on exercise...

Depression Exercise behaviour change Motivational regulations self-determination theory Vitality
Cover Image for Altered Resting Functional Connectivity Is Related to Cognitive Outcome in Males With Moderate-Severe Traumatic Brain Injury. View Article
Altered Resting Functional Connectivity Is Related to Cognitive Outcome in Males With Moderate-Severe Traumatic Brain Injury.
Nikos Konstantinou, Eva Pettemeridou, Emmanuel A Stamatakis, Ioannis Seimenis, Fofi Constantinidou
Dec 16, 2020
TBI results in significant cognitive impairments and in altered brain functional connectivity. However, no studies explored so far, the relationship between global functional connectivity and cognitive outcome in chronic...
cognitive outcome functional connectivity intrinsic connectivity contrast resting state Traumatic brain injury
Cover Image for When the going gets tough View Article
When the going gets tough
Nikos Ntoumanis, Laura Healy, Constantine Sedikides, Joan Duda, Brandon Stewart, Alison Smith, Johanna Bond
Jun 01, 2014
No prior research has examined how motivation for goal striving influences persistence in the face of increasing goal difficulty. This research examined the role of self-reported (Study 1) and primed (Study 2) autonomous and...
Cover Image for In the beginning View Article
In the beginning
Peter C. Rouse, Nikos Ntoumanis, Joan L. Duda, Kate Jolly, Geoffrey C. Williams
Jan 01, 0001

Self-determination theory (Deci & Ryan, 2000, Intrinsic motivation and self-determination in human behaviour. New York: Plenum Publishing) highlights the impact autonomy supportive environments can have on exercise...

Depression Exercise behaviour change Motivational regulations self-determination theory Vitality
Cover Image for The development and validation of the interpersonal support in physical activity consultations observational tool View Article
The development and validation of the interpersonal support in physical activity consultations observational tool
Peter C. Rouse, Joan L. Duda, Nikos Ntoumanis, Kate Jolly, Geoffrey C. Williams
Jan 01, 2016

This study describes the development and psychometric characteristics of an observational instrument that examines four aspects of interpersonal support (or lack of) provided during physical activity (PA) promotion...

autonomy support Exercise Observation physical activity consultations
Cover Image for A three-wave longitudinal test of self-determination theory’s mediation model of engagement and disaffection in youth sport View Article
A three-wave longitudinal test of self-determination theory’s mediation model of engagement and disaffection in youth sport
Thomas Curran, Andrew P Hill, Nikos Ntoumanis, Howard K Hall, Gareth E. Jowett
Jan 31, 2016
Research adopting self-determination theory (SDT) supports a mediation model whereby coach motivational styles (autonomy support and interpersonal control) predict athletes’ engagement and disaffection in youth sport via the...
Cover Image for Bandwidth Studies on a 1.4 m Long Multimode Polymer Spiral Waveguide View Article
Bandwidth Studies on a 1.4 m Long Multimode Polymer Spiral Waveguide
Jian Chen, Nikos Bamiedakis, Richard V Penty, Ian H White
Jul 03, 2014
Published by: http://publications.lib.chalmers.se/publication/201575-bandwidth-studies-of-a-14-m-long-multimode-polymer-spiral-waveguide

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