13 research outputs found
Data Mining e Sociale Network Analysis: gli strumenti al servizio della cyber intelligence
No full textLa quinta Conferenza Nazionale sulla Cyber Warfare si è svolta con una nuova formula, in due edizioni: la prima, "Lo Sviluppo delle Armi Cibernetiche" (Roma, 11 ottobre 2014), dedicata ad un approccio strategico e la seconda, "L'utilizzo della Cyber Intelligence per la Difesa del Business" (Milano 13 ottobre 2014), dedicata a problematiche economiche.
Il progressivo aumento della frequenza di attacchi informatici sempre più sofisticati e dirompenti rende prioritaria l'introduzione di innovazioni politico-strategiche, organizzative, tecnologiche e culturali affinché i decisori politici ed aziendali siano costantemente aggiornati e pronti ad interagire in tempi brevissimi garantendo, come già affermato nelle scorse edizioni, una stretta collaborazione tra mondo civile, militare e accademico. L'evento è stato ideato dal Centro Interdipartimentale Studi Strategici, Internazionali e Imprenditoriali (CSSII) dell'Università di Firenze, dall'Istituto per gli Studi di Previsione (ISPRI), dal Centro Studi Difesa e Sicurezza (CESTUDIS) e dal Centro di Ricerca di Cyber Intelligence and Information Security (CIS) de "La Sapienza" di Roma, d'intesa con Maglan Group - Information Defense and Technologies. La Conferenza ha avuto l'adesione del Presidente della Repubblica e sua Medaglia di Rappresentanza ed il patrocinio di Senato della Repubblica, Ministero della Difesa e Ministero dello Sviluppo Economico
Evaluation methodologies for the NB-IOT system: issues and ongoing efforts
No full textThe recently standardized Narrow Band Internet of
Things (NB-IOT) is expected to become a disruptive technology
in the IoT market. The low cost, manageability, and reliability
offered by a Mobile Network Operator (MNO) can be the enabler
for the widespread acceptance and deployment of IoT devices.
In this market phase, network planning plays a crucial role in
the possible services forecast, with obvious consequences on the
market analysis by the MNO. Moreover, there are many possible
improvements in the NB-IOT device management, which are
intentionally left as implementation dependent elements. As a
consequence, it is necessary to evaluate the performances of an
NB-IOT system, both for scientific and deployment purposes. In
this paper we will outline the various evaluation systems and the
ongoing efforts to build a new and efficient NB-IOT simulation
platform
Improving ITS-G5 Cybersecurity Features Starting from Hacking IEEE 802.11p V2X Communications Through Low-Cost SDR Devices
No full textHistoric Costume Simulation and its Application
No full textThis study highlights the potential of new technology as a means to provide new possibility for costumes in fragile condition to be utilised. The aim of this study is to create accurate digital duplicates of costumes from historical sources, and to explore the possibility of developing them as an exhibitory and educational method applying 3D apparel CAD and new media. To achieve this, three attributes for qualities of effective digital costumes were suggested: faithful reproduction, virtual fabrication, and interactive and stereographic appreciation. Based on these qualities, digital costumes and a PC application were produced and evaluated
Defect pair formation in fluorine and nitrogen codoped TiO<sub>2</sub>
No full textTitanium oxide is intensively investigated because of its high chemical stability and its photocatalytic properties, nevertheless, the large band gap limits its activity to a small portion of the solar spectrum. Nitrogen and fluorine codoping is an efficient defect engineering strategy to increase the photocatalytic activity of titanium oxide. In the present study, we apply density functional theory to investigate the interaction of nitrogen with fluorine and the formation of defect pairs. We show that in fluorine and nitrogen codoped titanium oxide the FiNi, FONi and FiNTi defects can form. Their impact on the electronic structure of titanium oxide is discussed. Publisher Statement: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. The following article appeared in Kordatos, A, Kelaidis, N & Chroneos, A 2017, 'Defect pair formation in fluorine and nitrogen codoped TiO2' Journal of Applied Physics, vol 123, 161510 and may be found at https://dx.doi.org/10.1063/1.500002
Metaball skinning of synthetic astroglial morphologies into realistic mesh models for visual analytics and in silico simulations
No full text<h2>Summary </h2>
<p>The dataset contained in this repository is the resulting meshes from applying the Metaball skinner in Blender to the astrocytic morphologies created by Zisis et al. </p>
<p>The paper, <strong>Metaball skinning of synthetic astroglial morphologies into realistic mesh models for visual analytics and in silico simulations,</strong> is published in Oxford Bioinformatics<em>. </em></p>
<h2>Dataset</h2>
<p>The dataset contains</p>
<ol>
<li>meshes that are generated from the Metaball skinning algorithm,</li>
<li>meshes that are created from running the optimizer on the skinned meshes,</li>
<li>decimated meshes that can be used for visualization purpose, </li>
<li>high quality renderings of all the astrocytic meshes, and </li>
<li>comparative statistical analysis for the skinned meshes and the optimized watertight meshes. </li>
</ol>
<h2>Paper record</h2>
<p>Bioinformatics, Volume 37, Issue Supplement_1, July 2021, Pages i426–i433, <a href="https://doi.org/10.1093/bioinformatics/btab280">https://doi.org/10.1093/bioinformatics/btab280</a></p>
<h2>Paper abstract </h2>
<div>
<div><strong>Motivation </strong>Astrocytes, the most abundant glial cells in the mammalian brain, have an instrumental role in developing neuronal circuits. They contribute to the physical structuring of the brain, modulating synaptic activity and maintaining the blood–brain barrier in addition to other significant aspects that impact brain function. Biophysically, detailed astrocytic models are key to unraveling their functional mechanisms via molecular simulations at microscopic scales. Detailed, and complete, biological reconstructions of astrocytic cells are sparse. Nonetheless, data-driven digital reconstruction of astroglial morphologies that are statistically identical to biological counterparts are becoming available. We use those synthetic morphologies to generate astrocytic meshes with realistic geometries, making it possible to perform these simulations.</div>
</div>
<div>
<div> </div>
<div><strong>Results </strong>We present an unconditionally robust method capable of reconstructing high fidelity polygonal meshes of astroglial cells from algorithmically-synthesized morphologies. Our method uses implicit surfaces, or metaballs, to skin the different structural components of astrocytes and then blend them in a seamless fashion. We also provide an end-to-end pipeline to produce optimized two- and three-dimensional meshes for visual analytics and simulations, respectively. The performance of our pipeline has been assessed with a group of 5000 astroglial morphologies and the geometric metrics of the resulting meshes are evaluated. The usability of the meshes is then demonstrated with different use cases.</div>
</div>
<div>
<div> </div>
<div><strong>Availability and implementation </strong>Our metaball skinning algorithm is implemented in Blender 2.82 relying on its Python API (Application Programming Interface). To make it accessible to computational biologists and neuroscientists, the implementation has been integrated into NeuroMorphoVis, an open source and domain specific package that is primarily designed for neuronal morphology visualization and meshing.</div>
</div>
<h2>BibTex citation</h2>
<blockquote>
<pre>@article{abdellah2021metaball,
title={Metaball skinning of synthetic astroglial morphologies into realistic mesh models <br>for in silico simulations and visual analytics},
author={Abdellah, Marwan and Foni, Alessandro and Zisis, Eleftherios and Guerrero, Nadir Roman and Lapere, <br>Samuel and Coggan, Jay S and Keller, Daniel and Markram, Henry and Sch{\"u}rmann, Felix},
journal={Bioinformatics},
volume={37},
number={Supplement\_1},
pages={i426--i433},
year={2021},
publisher={Oxford University Press}
}</pre>
</blockquote>
Saamelaisen populaarimusiikin matka 40 vuoden ajalta
No full textTekijä toteutti opinnäytetyönsä produktiona, joka huipentui Kuopion musiikkikeskuksen jazzklubilla
13.5.2015 pidettyyn konserttiin. Produktion aiheena oli saamelainen populaarimusiikin matka 40 vuoden
ajalta. Aiheen valinnan kautta tekijä halusi tutustua pohjoissaamenkieliseen populaarimusiikkiin sekä
kertoa siitä sanoin ja sävelin konsertin yleisölle, ja tämän raportin kautta myös muille asiasta kiinnostu-
neille.
Tekijä valitsi konserttiin kahdeksan musiikkikappaletta siten, että ne olivat tyylillisesti erilaisia ja edusti-
vat eri aikakausien musiikkia. Tekijä myös nuotinsi ja sovitti kappaleet eri soittimille sekä kokosi ja har-
joitutti kuusihenkisen yhtyeen, jossa hän itse soitti rumpuja. Muut yhtyeen jäsenet olivat Annukka Hir-
vasvuopio-Laiti (laulu), Teuvo Honkanen (bassokitara), Sauli Lämsä (koskettimet), Arto Moisala (sakso-
foni) ja Seppo Niemelä (kitara). Pohjoisin jäsen oli Utsjoelta ja eteläisin Helsingistä, muut jäsenet olivat
Kuopion seudulta.
Tämän kirjallisen raportin tarkoituksena on antaa pohjatietoa saamelaisista ja saamelaismusiikista sekä
kertoa produktion harjoitusprosessista. Raportissa alkuosassa on lyhyt katsaus saamelaisista ja saame-
laisesta musiikista. Sen jälkeen esitellään kappaleiden alkuperäiset esittäjät ja konsertin ohjelmisto. Li-
säksi raportissa kerrotaan produktion suunnittelusta, konsertin harjoitusprosessista, konserttijärjestelyis-
tä ja konsertin toteutuksesta. Raporttia täydentää liitteenä oleva cd-muotoinen konserttitallenne.The author realized his thesis as a production which culminated with a concert held in the jazz club of
the music centre of Kuopio on May 13th in 2015. The topic of the production was Sami popular music,
and by choosing the topic in question, the author wished to become familiar with Northern Sami popular
music and to tell about it with words and melodies to others interested in the subject.
The author chose eight musical pieces for the concert with the criteria that the pieces should represent
different styles and time periods. Also, the author notated and arranged the pieces for different instru-
ments as well as assembled and rehearsed a group numbering six people; the author himself played
the drums in the band. The other band members were Annukka Hirvasvuopio-Laiti (vocals), Teuvo
Honkanen (bass guitar), Sauli Lämsä (keyboard), Arto Moisala (saxophone) and Seppo Niemelä (gui-
tar). The northernmost member came from Utsjoki and the southernmost came from Helsinki. The rest
came from the Kuopio region.
The purpose of this written report is to provide background information on the Sami and Sami music as
well as to discuss the rehearsal process of the production. The beginning of the report includes a short
overview on the Sami and Sami music. After that, the original artists of the pieces and the programme of
the concert are presented. Next, an explanation is given on planning the production and on the rehears-
al process, arrangements and realization of the concert. The report is complemented by the enclosed
concert recording made in a cd-format
Metaball skinning of synthetic astroglial morphologies into realistic mesh models for visual analytics and in silico simulations
No full text<h2>Summary </h2>
<p>The dataset contained in this repository is the resulting meshes from applying the Metaball skinner in Blender to the astrocytic morphologies created by <a href="https://academic.oup.com/cercor/article/31/12/5686/6350537">Zisis et al., 2021</a>. </p>
<p>The paper, <strong>Metaball skinning of synthetic astroglial morphologies into realistic mesh models for visual analytics and in silico simulations,</strong> is published in Oxford Bioinformatics<em>. </em></p>
<h2>Dataset</h2>
<p>The dataset contains</p>
<ol>
<li>30 randomly astroglial morphologies, </li>
<li>30 corresponding surface and volume meshes (created with TetGen),</li>
<li>1000 astroglial morphologies, for large scale testing, </li>
<li>meshes that are generated from the Metaball skinning algorithm,</li>
<li>meshes that are created from running the optimizer on the skinned meshes,</li>
<li>decimated meshes that can be used for visualization purpose, </li>
<li>high quality renderings of all the astrocytic meshes, and </li>
<li>comparative statistical analysis for the skinned meshes and the optimized watertight meshes. </li>
</ol>
<h2>Paper record</h2>
<p>Bioinformatics, Volume 37, Issue Supplement_1, July 2021, Pages i426–i433, <a href="https://doi.org/10.1093/bioinformatics/btab280">https://doi.org/10.1093/bioinformatics/btab280</a></p>
<h2>Paper abstract </h2>
<div>
<div><strong>Motivation </strong>Astrocytes, the most abundant glial cells in the mammalian brain, have an instrumental role in developing neuronal circuits. They contribute to the physical structuring of the brain, modulating synaptic activity and maintaining the blood–brain barrier in addition to other significant aspects that impact brain function. Biophysically, detailed astrocytic models are key to unraveling their functional mechanisms via molecular simulations at microscopic scales. Detailed, and complete, biological reconstructions of astrocytic cells are sparse. Nonetheless, data-driven digital reconstruction of astroglial morphologies that are statistically identical to biological counterparts are becoming available. We use those synthetic morphologies to generate astrocytic meshes with realistic geometries, making it possible to perform these simulations.</div>
</div>
<div>
<div> </div>
<div><strong>Results </strong>We present an unconditionally robust method capable of reconstructing high fidelity polygonal meshes of astroglial cells from algorithmically-synthesized morphologies. Our method uses implicit surfaces, or metaballs, to skin the different structural components of astrocytes and then blend them in a seamless fashion. We also provide an end-to-end pipeline to produce optimized two- and three-dimensional meshes for visual analytics and simulations, respectively. The performance of our pipeline has been assessed with a group of 5000 astroglial morphologies and the geometric metrics of the resulting meshes are evaluated. The usability of the meshes is then demonstrated with different use cases.</div>
</div>
<div>
<div> </div>
<div><strong>Availability and implementation </strong>Our metaball skinning algorithm is implemented in Blender 2.82 relying on its Python API (Application Programming Interface). To make it accessible to computational biologists and neuroscientists, the implementation has been integrated into NeuroMorphoVis, an open source and domain specific package that is primarily designed for neuronal morphology visualization and meshing.</div>
</div>
<h2>BibTex citation</h2>
<blockquote>
<pre>@article{abdellah2021metaball,
title={Metaball skinning of synthetic astroglial morphologies into realistic mesh models <br>for in silico simulations and visual analytics},
author={Abdellah, Marwan and Foni, Alessandro and Zisis, Eleftherios and Guerrero, Nadir Roman and Lapere, <br>Samuel and Coggan, Jay S and Keller, Daniel and Markram, Henry and Sch{\"u}rmann, Felix},
journal={Bioinformatics},
volume={37},
number={Supplement\_1},
pages={i426--i433},
year={2021},
publisher={Oxford University Press}
}</pre>
</blockquote>
Scrittura e dislessia. Un nuovo percorso di ricerca
No full textMolti studi recenti hanno dimostrato che la scrittura, soprattutto se alfabetica, può influenzare la competenza fonologica dei parlanti; ad esempio, in compiti come il conteggio dei foni o la costruzione di rime. Sembra quindi esistere una stretta relazione tra la scrittura e l’esecuzione di compiti meta–fonologici. Partendo dal riconoscimento della rilevanza della lettura e della scrittura nella cognizione umana, il lavoro propone un nuovo percorso di ricerca, dedicato alla scrittura dei bambini affetti da disgrafia e dislessia confrontata con quella dei soggetti di controllo. Finora, la scrittura è stata relativamente trascurata dalla letteratura, poiché l’eziologia di entrambi i disturbi era considerata essenzialmente fonologica. L’autore ritiene invece che l’analisi della scrittura e lo studio delle abilità manuali e delle sequenze dinamiche alla base della scrittura possano gettare nuova luce sui processi di letturacrittura sia nello sviluppo normotipico sia in quello atipico. Viene inoltre presentato e discusso un modello originale basato su una griglia ben definita di tratti distintivi in grado di rappresentare le varie lettere alfabetiche.Many recent studies have shown that writing, especially if alphabetic, can influence the phonological competence of speakers; e.g., in tasks such as counting the number of phones or constructing rhymes. Therefore, there seems to be a close relationship between writing and the performance of meta–phonological tasks. Starting from the recognition of the relevance of reading and writing in human cognition, the paper proposes a new research path, devoted to the writing of children affected by dysgraphia and dyslexia, compared with that of control subjects. Until now, writing has been relatively neglected by the literature, since the etiology of both disorders was considered essentially phonological. Instead, the author believes that the analysis of writing as well as the study of manual skills and of the dynamic sequences underlying writing can shed new light on the reading–writing processes both in the normo–typical development and in the atypical one. An original model based on a well–defined grid of distinctive features that can represent the various alphabetic letters is also presented and discussed
Intelligence e interesse nazionale
No full textI volume raccoglie gli Atti dei Panel intelligence, globalizzazione e
interesse nazionale svoltisi nei convegni 2013 e 2014 della Societ
Italiana di Scienza Politica (SISP). È ormai opinione comune che solo la diffusione della cultura dell'intelligence può consentire di superare le vecchie diffidenze nei confronti dei servizi d'informazione, e che in un sistema democratico l'intelligence ha bisogno della collaborazione e delle competenze della società civile e dell'ambiente accade-mico. L'opera mette a confronto argomenti e punti di vista di addetti ai lavori, esponenti delle professioni e docenti universitari. I temi trattati riguardano l'esame del quadro geopolitico internazionale, le minacce alle infrastrutture critiche, l'intelligence economica, lo spionaggio economico e finanziario, l'organizzazione dei servizi di sicu-rezza, la cyber intelligence, i social media, i pericoli della moneta virtuale e la crescente rilevanza dello spazio cibernetico
