Browsing by Subject "Three dimensional"

Article

Alcoholysis/hydrolysis of 1,1′-carbonyldiimidazole as a means of preparing unprecedented, imidazole-containing one-dimensional coordination polymers of copper(II)

Stamatatos, Theocharis C.; Perlepes, Spyros P.; Raptopoulou, Catherine P.; Terzis, Aris; Patrickios, Costas S.; Tasiopoulos, Anastasios J.; Boudalis, Athanassios K. (2009)

The use of 1,1′-carbonyldiimidazole, (im)2CO, for the synthesis of imidazolate (im-) and/or imidazole (Him)-containing copper(II) coordination polymers is described. The [Cu2(O 2CMe)4(H2O)2]/(im)2CO reaction system in EtOH ...

Conference Object

An analytical framework for estimating TCO and exploring data center design space

Hardy, D.; Kleanthous, Marios M.; Sideris, I.; Saidi, A. G.; Ozer, E.; Sazeides, Yiannakis (2013)

In this paper, we present EETCO: an estimation and exploration tool that provides qualitative assessment of data center design decisions on Total-Cost-of-Ownership (TCO) and environmental impact. It can capture the ...

Article

Conforming spectral methods for Poisson problems in cuboidal domains

Karageorghis, Andreas (1994)

A Chebyshev collocation strategy is introduced for the subdivision of cuboids into cuboidal subdomains (elements). These elements are conforming, which means that the approximation to the solution is C0 continuous at all ...

Article

Direct numerical simulation of turbulent liquid metal flow entering a magnetic field

Albets-Chico, X.; Grigoriadis, D. G. E.; Votyakov, E. V.; Kassinos, Stavros C. (2013)

This paper presents direct numerical simulations (DNS) of fully developed turbulent liquid-metal flow in a circular duct entering a magnetic field. The case of a magnetohydrodynamic flow leaving a strong magnetic field has ...

Conference Object

Effect of posture change on the geometric features of the healthy carotid bifurcation

Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2009)

Segmented cross sectional MRI images were used to construct 3D virtual models of the carotid bifurcation in 5 healthy volunteers. Geometric features such as bifurcation angle, planarity angle, asymmetry angle tortuosity ...

Article

Effect of posture change on the geometric features of the healthy carotid bifurcation

Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Georgiou, Georgios C.; Brott, B. C.; Eracleous, Eleni A.; Anayiotos, Andreas S. (2011)

Segmented cross-sectional MRI images were used to construct 3-D virtual models of the carotid bifurcation in ten healthy volunteers. Geometric features, such as bifurcation angle, internal carotid artery (ICA) angle, ...

Article

An efficient methodology for simulating earthquake-induced 3D pounding of buildings

Polycarpou, Panayiotis C.; Papaloizou, Loizos; Komodromos, Petros I. (2014)

The current paper presents an efficient methodology for numerically simulating in three dimensions adjacent buildings that may experience pounding during strong earthquakes. In particular, a new approach to the numerical ...

Article

A fully conforming spectral collocation scheme for second- and fourth-order problems

Karageorghis, Andreas (1995)

A spectral element scheme is presented for the solution of second- and fourth-order problems in two and three space dimensions. This scheme is based on a collocation formulation and, for a certain class of problems, results ...

Conference Object

Head posture influences the geometric and hemodynamic features on the healthy human carotid bifurcation

Aristokleous, Nicolas; Seimenis, Ioannis; Papaharilaou, Yannis; Khozeymeh, M. I.; Georgiou, Georgios C.; Brott, B. C.; Anayiotos, Andreas S. (2012)

Atherosclerosis is the third leading cause of morbidity and mortality in the Western world. Low and oscillating wall shear stress (WSS) regions have been previously reported as parameters that correlate with the development ...

Conference Object

Identification of kinematic traits in 3D reaching Tasks with the use of a haptic Nine-Hole Peg-Board Test: Comparison between healthy people and people with Multiple Sclerosis

Xydas, E. G.; Louca, Loucas S. (Affiliation: Mechanical and Manufacturing Engineering Department, University of Cyprus, P.O. Box: 20537, Nicosia, CyprusAffiliation: Mechanical and Manufacturing Engineering Department, University of Cyprus, CyprusCorrespondence Address: Xydas, E. G.Mechanical and Manufacturing Engineering Department, University of Cyprus, P.O. Box: 20537, Nicosia, Cyprusemail: mep4ex01@ucy.ac.cy, 2008)

Multiple Sclerosis (MS) is a complex neurological disease that destroys the myelin sheath of the nerves, consequently affecting the motor control ability of the person in numerous ways. Rehabilitation of the upper limb ...

Article

Linear analysis of generalized turbulent hyperbolic flow in a rotating frame

Langer, C. A.; Akylas, Evaggelos; Kassinos, Stavros C. (2007)

We apply inviscid rapid distortion theory to the generalized case of turbulent hyperbolic flow in a rotating frame and investigate the dependence of the evolution of the turbulent kinetic energy on the frame rotation rate. ...

Article

Matrix decomposition RBF algorithm for solving 3D elliptic problems

Karageorghis, Andreas; Chen, C. S.; Smyrlis, Yiorgos-Sokratis (2009)

In this study, we propose an efficient algorithm for the evaluation of the particular solutions of three-dimensional inhomogeneous elliptic partial differential equations using radial basis functions. The collocation points ...

Article

MHD flow past a circular cylinder using the immersed boundary method

Grigoriadis, D. G. E.; Sarris, I. E.; Kassinos, Stavros C. (2010)

The immersed boundary method (IB hereafter) is an efficient numerical methodology for treating purely hydrodynamic flows in geometrically complicated flow-domains. Recently Grigoriadis et als. [1] proposed an extension of ...

Article

MRI-based morphological modeling, synthesis and characterization of cardiac tissue-mimicking materials

Kossivas, Fotis; Angeli, Stelios I.; Kafouris, Demetris; Patrickios, Costas S.; Tzagarakis, V.; Constantinides, Christakis (2012)

This study uses standard synthetic methodologies to produce tissue-mimicking materials that match the morphology and emulate the in vivo murine and human cardiac mechanical and imaging characteristics, with dynamic mechanical ...

Article

Multiscale computation for bioartificial soft tissues with complex geometries

Barocas, V. Η; Luo, X.-J.; Stylianopoulos, T.; Shephard, M. S. (2009)

The mechanical function of soft collagenous tissues is inherently multiscale, with the tissue dimension being in the centimeter length scale and the underlying collagen network being in the micrometer length scale. This ...

Conference Object

A novel 3-d model for node and system trust

Hadjichristofi, G. C.; Kappos, G.; Hadjicostis, Christoforos N. (2011)

Nowadays, there is an increasing demand for wireless and mobile networks that guarantee secure and reliable data communication among users. To enable data exchanges, authentication mechanisms need to be in place to dynamically ...

Article

Permeability calculations in three-dimensional isotropic and oriented fiber networks

Barocas, V. Η; Stylianopoulos, T.; Yeckel, A.; Derby, J. J.; Luo, X.-J.; Shephard, M. S.; Sander, E. A. (2008)

Hydraulic permeabilities of fiber networks are of interest for many applications and have been studied extensively. There is little work, however, on permeability calculations in three-dimensional random networks. Computational ...

Article

Protein secondary structure prediction with bidirectional recurrent neural nets: Can weight updating for each residue enhance performance?

Agathocleous, Michalis; Christodoulou, Georgia; Promponas, Vasilis J.; Christodoulou, Chris C.; Vassiliades, Vassilis; Antoniou, Antonis (2010)

Successful protein secondary structure prediction is an important step towards modelling protein 3D structure, with several practical applications. Even though in the last four decades several PSSP algorithms have been ...

Article

Similarity reductions of the (1 + 3)-dimensional Burgers equation

Christou, Marios Andreas; Ivanova, Nataliya M.; Sophocleous, Christodoulos (2009)

We consider the (1 + 3)-dimensional Burgers equation ut = uxx + uyy + uzz + uux which has considerable interest in mathematical physics. We complete the list of similarity reductions that are obtained from the Lie symmetries ...

Article

Synthesis and characterization of amphiphilic cationic symmetrical ABCBA pentablock terpolymer networks: Effect of hydrophobic content

Triftaridou, Aggeliki I.; Loizou, Elena; Patrickios, Costas S. (2008)

Group transfer polymerization was employed for the preparation of six amphiphilic terpolymer networks comprising the hydrophilic, pH-responsive 2-(dime-thylamino)ethyl methacrylate (DMAEMA), the neutral hydrophilic methoxy ...