Filters








1,851 Hits in 1.8 sec

The Neuropsychology of Mental Illness Edited by Stephen J. Wood, Nicholas B. Allen & Christos Pantelis. Cambridge University Press. 2009. £55 (hb). 443pp. ISBN: 9780521862899

Vaughan Bell
2011 British Journal of Psychiatry  
doi:10.1192/bjp.bp.110.079061 fatcat:x7dyujqel5djbfxvjk4jnixfqu

Modelling of Three-Dimensional Nanographene

Christos Mathioudakis, Pantelis C. Kelires
2016 Nanoscale Research Letters  
Monte Carlo simulations and tight-binding calculations shed light on the properties of three-dimensional nanographene, a material composed of interlinked, covalently-bonded nanoplatelet graphene units. By constructing realistic model networks of nanographene, we study its structure, mechanical stability, and optoelectronic properties. We find that the material is nanoporous with high specific surface area, in agreement with experimental reports. Its structure is characterized by randomly
more » ... d and curved nanoplatelet units which retain a high degree of graphene order. The material exhibits good mechanical stability with a formation energy of only ∼0.3 eV/atom compared to two-dimensional graphene. It has high electrical conductivity and optical absorption, with values approaching those of graphene. Background Recent efforts in graphene research include the realization of three-dimensional (3D) bulk materials with graphene nanoplatelets (nanoribbons) as their building blocks [1] [2] [3] [4] . These architectures are envisioned such as to retain the exceptional properties of 2D graphene in addition to providing mechanical robustness, high surface area, and macroporosity, properties that are invaluable for a plethora of applications including catalysis, sensors, and energy storage and conversion (carbon-based supercapacitors, electrodes in Li-ion batteries, active materials in solar cells), among others. In addition, the preservation of high conductivity and electron mobility is essential for any possible electronic applications. The reported up-to-date 3D graphene structures, produced by a variety of experimental techniques, such as chemical vapor deposition (CVD) [1], assembly, and chemical treatment of graphene oxide (GO) sheets [5, 6], or pyrolysis and etching of sol-gel organic polymers [4, 7] , generally visualize the resulting 3D networks as porous and spongy, composed of nanometer-sized (2-10 nm) curved nanoplatelets randomly oriented, interconnected,
doi:10.1186/s11671-016-1354-4 pmid:26983431 pmcid:PMC4794475 fatcat:od7jlw37cjgntck6anf62jji5i

Schizophrenia, neuroimaging and connectomics

Alex Fornito, Andrew Zalesky, Christos Pantelis, Edward T. Bullmore
2012 NeuroImage  
In schizophrenia, the insult could correspond to an early neurodevelopmental lesion or an aberration of later brain maturation, consistent with multi-hit developmental etiological models (Pantelis et  ...  Brain changes in schizophrenia have a dynamic trajectory, beginning before disease onset and progressing with ongoing illness (Hulshoff Pol and Kahn, 2008; Olabi, et al., 2011; Pantelis et al., 2005;  ... 
doi:10.1016/j.neuroimage.2011.12.090 pmid:22387165 fatcat:2futpzyvynbddpw6ll4oth6wuy

Francofemme Duality (Luce Irigaray-Hélène Cixous) the Many Faces of Womanhood in Pantelis Voulgaris' Brides

CHRISTOS STAVROU
2016 Journal of Arts and Humanities  
Through the script, the photography and even human gestures, Pantelis Voulgaris creates a film adaptation which bears a profound respect to the original text.  ...  The case of Pantelis Voulgaris' film: Brides Brides is a production by widely known Greek director Pantelis Voulgaris and screenwriter Ioanna Karystiani based on Karystiani's novel.  ...  Introduction Pantelis Voulgaris directed the film Brides (2004) which was Hollywood intervened and circulated. It was produced by Martin Scorsese.  ... 
doaj:6cd87d7969c14252b28858cc3f0ac8bf fatcat:tkkoa3r5qbhcnfjaaa4zvy2say

A set of ontologies to drive tools for the control of vector-borne diseases

Pantelis Topalis, Pantelis Topalis, Emmanuel Dialynas, Elvira Mitraka, Elena Deliyanni, Inga Siden-Kiamos, Christos Louis
2009 Nature Precedings  
We are developing a set of ontologies that deal with vector-borne diseases and the arthropod vectors that transmit them. For practical reasons (application priorities), we initiated this project with an ontology of insecticide resistance followed by a series of ontologies that describe malaria as well as physiological processes of mosquitoes that are relevant to, and involved in, disease transmission. These will be expanded to encompass other vectorborne diseases as well as non-mosquito
more » ... The aim of the whole undertaking, which is worked out in the frame of the international IDO (Infectious Disease Ontology) project, is to provide the community with a set of ontological tools that can be used both in the development of specific databases and, most importantly, in the construction of decision support systems to control these diseases.
doi:10.1038/npre.2009.3464 fatcat:d6qzcqnqjbgcjmdqvuiv5oiefe

Community Detection of Screenplay Characters [chapter]

Christos Makris, Pantelis Vikatos
2016 IFIP Advances in Information and Communication Technology  
In this paper, we present a model for automatic community detection of the characters by parsing movie screenplays. In our procedure it is proposed a classification model to predict the casting by categorize each line of the script in a character or not and the co-occurrence of the characters in the same scene constitutes the link between two characters in the social network. We use an existing modularity based community detection algorithm for cutting the created graph in communities. The
more » ... ation of our methodology is contained in the extraction of the casting of the screenplay from Wikipedia pages in order to train and build an efficient classifier to identify the characters in a screenplay. The proposed methodology for extracting automatically the social network and communities of screenplay characters can be probably used for enhancing movie recommendations.
doi:10.1007/978-3-319-44944-9_40 fatcat:xtivbm7skfbzpft64oda647szq

Agent Oriented Data Integration [chapter]

Avigdor Gal, Aviv Segev, Christos Tatsiopoulos, Kostas Sidiropoulos, Pantelis Georgiades
2005 Lecture Notes in Computer Science  
Data integration is the process by which data from heterogeneous data sources are conceptually integrated into a single cohesive data set. In recent years agents have been increasingly used in information systems to promote performance. In this work we propose a modeling framework for agent oriented data integration to demonstrate how agents can support this process. We provide a systematic analysis of the process using real world scenarios, taken from email messages from citizens in a local
more » ... ernment, and demonstrate two agent oriented data integration tasks, email routing and opinion analysis.
doi:10.1007/11568346_12 fatcat:klk2clas5zarzdtj2t5mvih2am

A Hierarchical Model of Inhibitory Control

Jeggan Tiego, Renee Testa, Mark A. Bellgrove, Christos Pantelis, Sarah Whittle
2018 Frontiers in Psychology  
Copyright © 2018 Tiego, Testa, Bellgrove, Pantelis and Whittle. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).  ... 
doi:10.3389/fpsyg.2018.01339 pmid:30123154 pmcid:PMC6085548 fatcat:otzi53zparecxgqor42kerfqyi

miRNAO: An Ontology for microRNAs

Vicky Dritsou, Pantelis Topalis, Emmanuel Dialynas, Elvira Mitraka, Christos Louis
2012 International Conference on Biomedical Ontology  
MicroRNAs (miRNAs) are short RNA molecules (∼22 nt long) that act as gene regulators in many eukaryotes. By binding to complementary strands of messenger RNAs (mRNAs), they induce translational repression or target degradation. Since their discovery in 1993 (Lee et al., 1993) , they have received a lot of attention in the research area and some thousands of miRNAs have been reported in the literature; version 18.0 of miRBase (Kozomara and Griffiths-Jones, 2011) contains 18.226 entries
more » ... ng precursor miRNAs in 168 species, which express 21.643 mature miRNA products. Each of these small RNA structures regulates many target mRNAs (Baek et al., 2008) , while the detection of the targets is a great challenge for researchers. Besides the number of identified miRNAs that grows very fast, the experiments performed aiming at detecting targets have also increased. Large data sets
dblp:conf/icbo/DritsouTDML12 fatcat:bn6z6b225bg5jpoggwtltuakgy

IDOMAL: the malaria ontology revisited

Pantelis Topalis, Elvira Mitraka, Vicky Dritsou, Emmanuel Dialynas, Christos Louis
2013 Journal of Biomedical Semantics  
With about half a billion cases, of which nearly one million fatal ones, malaria constitutes one of the major infectious diseases worldwide. A recently revived effort to eliminate the disease also focuses on IT resources for its efficient control, which prominently includes the control of the mosquito vectors that transmit the Plasmodium pathogens. As part of this effort, IDOMAL has been developed and it is continually being updated. Findings: In addition to the improvement of IDOMAL's
more » ... and the correction of some inaccuracies, there were some major subdomain additions such as a section on natural products and remedies, and the import, from other, higher order ontologies, of several terms, which were merged with IDOMAL terms. Effort was put on rendering IDOMAL fully compatible as an extension of IDO, the Infectious Disease Ontology. The reason for the difficulties in fully reaching that target were the inherent differences between vector-borne diseases and "classical" infectious diseases, which make it necessary to specifically adjust the ontology's architecture in order to comprise vectors and their populations. Conclusions: In addition to a higher coverage of domain-specific terms and optimizing its usage by databases and decision-support systems, the new version of IDOMAL described here allows for more cross-talk between it and other ontologies, and in particular IDO. The malaria ontology is available for downloading at the OBO Foundry
doi:10.1186/2041-1480-4-16 pmid:24034841 pmcid:PMC3848731 fatcat:bojhhccmpfbbvlhdy4a2rnspua

Brain-predicted age associates with psychopathology dimensions in youth [article]

Vanessa Cropley, Ye Tian, Kavisha Fernando, Sina Mansour, Christos Pantelis, Luca Cocchi, Andrew Zalesky
2020 bioRxiv   pre-print
This study aims to investigate whether dimensional constructs of psychopathology relate to advanced, attenuated or normal patterns of brain development, and to determine whether these constructs share common neurodevelopmental profiles. Methods: Psychiatric symptom ratings from 9312 youths (8-21 years) were parsed into 7 independent dimensions of clinical psychopathology representing conduct, anxiety, obsessive-compulsive, attention, depression, bipolar, and psychosis symptoms. Using a subset
more » ... this cohort with structural MRI (n=1313), a normative model of brain morphology was established and the model was then applied to predict the age of youth with clinical symptoms. We investigated whether the deviation of brain-predicted age from true chronological age, called the brain age gap, explained individual variation in each psychopathology dimension. Results: Individual variation in the brain age gap significantly associated with clinical dimensions representing psychosis (t=3.16, p=0.0016), obsessive-compulsive symptoms (t=2.5, p=0.01), and general psychopathology (t=4.08, p<0.0001). Greater symptom severity along these dimensions was associated with brain morphology that appeared older than expected for typically developing youth of the same age. Psychopathology dimensions clustered into two modules based on shared brain loci where putative accelerated neurodevelopment was most prominent. Patterns of morphological development were accelerated in frontal cortices for depression, psychosis and conduct symptoms (Module I), whereas acceleration was most evident in subcortex and insula for the remaining dimensions (Module II). Conclusions: Our findings suggest that advanced brain development, particularly in frontal cortex and subcortical nuclei, underpins clinical psychosis and obsessive-compulsive symptoms in youth. Psychopathology dimensions share common neural substrates, despite representing clinically independent symptom profiles.
doi:10.1101/2020.06.13.149658 fatcat:7k4h2zs34facxn6zw4mnbm7huy

Neuropsychological Deficits in Obsessive-compulsive Disorder

Rosemary Purcell, Paul Maruff, Michael Kyrios, Christos Pantelis
1998 Archives of General Psychiatry  
doi:10.1001/archpsyc.55.5.415 pmid:9596044 fatcat:bspm7njjsfcxtj3hqx4ixzm5ga

A Prototype Mobile Application for the Athens Numismatic Museum

Chasapis Pantelis, Sarandis Mitropoulos, Christos Douligeris
2019 Applied Computing and Informatics  
Corresponding author Pantelis Chasapis can be contacted at: pandelis.cha@gmail.com For instructions on how to order reprints of this article, please visit our website: www.emeraldgrouppublishing.com/licensing  ... 
doi:10.1016/j.aci.2019.06.001 fatcat:mw365vzanbg53dvo2okstagb3i

Affinity Scores: An Individual-centric Fingerprinting Framework for Neuropsychiatric Disorders [article]

Cassandra M J Wannan, Christos Pantelis, Antonia Merritt, Bruce Tonge, Warda T Syeda
2021 bioRxiv   pre-print
Christos Pantelis: Supervision, conceptualization, funding acquisition, review and editing.  ... 
doi:10.1101/2021.11.15.468749 fatcat:v5fbxckyb5gr5nj2oo74ttv7qa

Structure, elastic properties and strength of amorphous and nanocomposite carbon [article]

Ioannis N. Remediakis, Maria G. Fyta, Christos Mathioudakis, Georgios Kopidakis, Pantelis C. Kelires
2006 arXiv   pre-print
We study theoretically the equilibrium structure, as well as the response under external load, of characteristic carbon-based materials. The materials considered include diamond, amorphous carbon (a-C), "amorphous diamond" and nanocomposite amorphous carbon (na-C). A universal bulk-modulus versus density curve is obeyed by all structures we consider. We calculate the dependence of elastic constants on the density. The strength of a-C was found to increase in roughly a linear manner, with
more » ... ing concentration of four-fold atoms, with the maximum stress of the strongest a-C sample being about half that of diamond. The response of na-C to external load is essentially identical to the response of the embedding a-C matrix.
arXiv:cond-mat/0611368v1 fatcat:3jozori6jvasnamc4hfzjl6tye
« Previous Showing results 1 — 15 out of 1,851 results