cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Visual-somatosensory interactions in mental representations of the body and the face
Creators: name: Beck, Brianna <1985>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: M-PSI/02 Psicobiologia e psicologia fisiologica

description: The body is represented in the brain at levels that incorporate multisensory information.  This thesis focused on interactions between vision and cutaneous sensations (i.e., touch and pain).  Experiment 1 revealed that there are partially dissociable pathways for visual enhancement of touch (VET) depending upon whether one sees one’s own body or the body of another person.  This indicates that VET, a seeming low-level effect on spatial tactile acuity, is actually sensitive to body identity.  Experiments 2-4 explored the effect of viewing one’s own body on pain perception.  They demonstrated that viewing the body biases pain intensity judgments irrespective of actual stimulus intensity, and, more importantly, reduces the discriminative capacities of the nociceptive pathway encoding noxious stimulus intensity. The latter effect only occurs if the pain-inducing event itself is not visible, suggesting that viewing the body alone and viewing a stimulus event on the body have distinct effects on cutaneous sensations.  Experiment 5 replicated an enhancement of visual remapping of touch (VRT) when viewing fearful human faces being touched, and further demonstrated that VRT does not occur for observed touch on non-human faces, even fearful ones.  This suggests that the facial expressions of non-human animals may not be simulated within the somatosensory system of the human observer in the same way that the facial expressions of other humans are.  Finally, Experiment 6 examined the enfacement illusion, in which synchronous visuo-tactile inputs cause another’s face to be assimilated into the mental self-face representation.  The strength of enfacement was not affected by the other’s facial expression, supporting an asymmetric relationship between processing of facial identity and facial expressions.  Together, these studies indicate that multisensory representations of the body in the brain link low-level perceptual processes with the perception of emotional cues and body/face identity, and interact in complex ways depending upon contextual factors.
Distributed Smart City Services for Urban Ecosystems
Creators: name: Calderoni, Luca <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: INF/01 Informatica

description: A Smart City is a high-performance urban context, where citizens live independently and are more aware of the surrounding opportunities, thanks to forward-looking development of economy politics, governance, mobility
and environment. ICT infrastructures play a key-role in this new research field being also a mean for society to allow new ideas to prosper and new, more efficient approaches to be developed. The aim of this work is to research and develop novel solutions, here called smart services, in order to solve several upcoming problems and known issues in urban areas and more in general in the modern society context. A specific focus is posed on smart governance and on privacy issues which have been arisen in the cellular age.
Residual function, spontaneous reorganisation and treatment plasticity in homonymous visual field defects
Creators: name: Dundon, Neil Michael <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: M-PSI/02 Psicobiologia e psicologia fisiologica

description: This thesis will focus on the residual function and visual and attentional deficits in human patients, which accompany damage to the visual cortex or its thalamic afferents, and plastic changes, which follow it. In particular, I will focus on homonymous visual field defects, which comprise a broad set of central disorders of vision. I will present experimental evidence that when the primary visual pathway is completely damaged, the only signal that can be implicitly processed via subcortical visual networks is fear. I will also present data showing that in a patient with relative deafferentation of visual cortex, changes in the spatial tuning and response gain of the contralesional and ipsilesional cortex are observed, which are accompanied by changes in functional connectivity with regions belonging to the dorsal attentional network and the default mode network. I will also discuss how cortical plasticity might be harnessed to improve recovery through novel treatments. Moreover, I will show how treatment interventions aimed at recruiting spared subcortical pathway supporting multisensory orienting can drive network level change.
zBootes : z-band Photometry in the NOAO Deep Wide-Field Survey Bootes Field
Creators: name: Cool, Richard J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present zBootes, a new z-band photometric imaging campaign of 7.62 square degrees in the NOAO Deep Wide-Field Survey (NDWFS) Bootes field. In this paper, all of the images for this survey are released as well as the associated catalogs. The final zBootes catalogs are complete (at the 50% level) to 22.7 mag over 50% of the field. With these depths, the zBootes images should be sensitive to L* galaxies to z~1 over much of the survey area. These data have several possible applications including searching for and characterizing high-redshift quasars and brown dwarfs and providing added constraints to photometric redshift determinations of galaxies and active galaxies to moderate redshift. The zBootes imaging adds photometric data at a new wavelength to the existing wealth of multi-wavelength observations of the NDWFS Bootes field.
description: Accepted for publication in ApJS. Full resolution version and associated data release can be found at http://archive.noao.edu/nsa/zbootes.html
Remarks on the Nyquist and Callen-Welton Theorems
Creators: name: Trigger, S. A.
name: van Heijst, G. J. F.
name: Rukhadze, A. A.
name: Schram, P. P. J. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The connection of the Callen-Welton and Nyquist fluctuation-dissipation relations is considered for plasma-like classical and quantum systems. The conditions for appearance of the dissipative parameters in the equilibrium current-current correlation function are investigated. The paper presents the arguments for the restrictions of the Nyquist theorem and against violation of the Callen-Welton theorem in the quantum case.
description: 14 pages, 0 figures, sumitted in Physica A
Σύνθεση Ευρυζωνικής Κεραίας Ηilbert στα 5-6 GHz με τη χρήση γενετικών αλγορίθμων.:
Creators: name: Περιστεριανός, Ανδρέας Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Μικροταινιακές κεραίες.
Τυπωμένες φρακταλικές κεραίες Hilbert
Λογισμικό Matlab
Γενετικοί Αλγόριθμοι
Microstrip antennas
Printed Hilbert Fractal Antennas
Μatlab
Genetic Algorithms

description: Στόχος της παρούσας διπλωματικής εργασίας ήταν η σύνθεση μικροταινιακής ευρυζωνικής κεραίας για την περιοχή 5-6 GHz.Η κεραία έπρεπε να έχει μικρό μέγεθος ,υψηλή απολαβή και κατά το δυνατόν μεγάλο συχνοτικό εύρος λειτουργίας. Σαν βασική δομή επιλέχθηκε η φρακταλική καμπύλη του Hilbert. O προσδιορισμός των γεωμετρικών χαρακτηριστικών της κεραίας πραγματοποιήθηκε με σύνθεση και εφαρμογή γενετικού αλγορίθμου. Ο κώδικας του αλγορίθμου γράφτηκε στο Μatlab R2011b και συνδυάστηκε με λογισμικό ηλεκτρομαγνητικής ανάλυσης υψηλών συχνοτήτων του εμπορίου. Ο αλγόριθμος που δημιουργήθηκε αποδείχθηκε αποτελεσματικός καθώς έδωσε κεραίες με συχνότητα λειτουργίας στην περιοχή 5 GHz -6 GHz και εύρος ζώνης 16% , απολαβή μεγαλύτερη από 7.5dB που σε ορισμένες συχνότητες υπερέβαινε τα 10 dB. Δηλαδή τιμές υψηλές σε σχέση με το μέγεθος της κεραίας.
description: The aim of the dissertation was the synthesis of microstrip antenna for the frequency band of 5GHz -6GHz. Besides the frequency bandwidth ,the technical specifications were small antenna size , high gain and large bandwidth . The Hilbert fractal curve was selected as fundamental configuration for the antenna design. The evaluation of the geometrical characteristics of the antenna was made by the synthesis and application of a Genetic Algorithm (GA). The algorithm code was constructed via the Matlab R2011b software which was combined with commercial electromagnetic high frequency numerical analysis software. The constructed algorithm was proved efficient, as it gave microstrip antennas operating inside the pre-specified frequency band ,with bandwidth ~16%,gain greater than 7.5dB and at some frequencies exceeding the value of 10dB.These gain values are considered satisfactory high if we take into account the small size of the antennas.
Diagnostics of the Heating Processes in Solar Flares Using Chromospheric Spectral Lines
Creators: name: Cheng, J. X.
name: Ding, M. D.
name: Li, J. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have calculated the H$α$ and Ca {\sc ii} 8542 Å line profiles based on four different atmospheric models, including the effects of nonthermal electron beams with various energy fluxes. These two lines have different responses to thermal and nonthermal effects, and can be used to diagnose the thermal and nonthermal heating processes. We apply our method to an X-class flare that occurred on 2001 October 19. We are able to identify quantitatively the heating effects during the flare eruption. We find that the nonthermal effects at the outer edge of the flare ribbon are more notable than that at the inner edge, while the temperature at the inner edge seems higher. On the other hand, the results show that nonthermal effects increase rapidly in the rise phase and decrease quickly in the decay phase, but the atmospheric temperature can still keep relatively high for some time after getting to its maximum. For the two kernels that we analyze, the maximum energy fluxes of the electron beams are $\sim$ 10$^{10}$ and 10$^{11}$ ergs cm$^{-2}$ s$^{-1}$, respectively. However, the atmospheric temperatures are not so high, i.e., lower than or slightly higher than that of the weak flare model F1 at the two kernels. We discuss the implications of the results for two-ribbon flare models.
description: 6 pages, 9 figures, accepted for publication in ApJ
A new 3D modelling paradigm for discrete model
Creators: name: Bertini, Flavio <1982>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: INF/01 Informatica

description: Until few years ago, 3D modelling was a topic confined into a professional environment. Nowadays technological innovations, the 3D printer among all, have attracted novice users to this application field. This sudden breakthrough was not supported by adequate software solutions. The 3D editing tools currently available do not assist the non-expert user during the various stages of generation, interaction and manipulation of 3D virtual models. This is mainly due to the current paradigm that is largely supported by two-dimensional input/output devices and strongly affected by obvious geometrical constraints. We have identified three main phases that characterize the creation and management of 3D virtual models. We investigated these directions evaluating and simplifying the classic editing techniques in order to propose more natural and intuitive tools in a pure 3D modelling environment. In particular, we focused on freehand sketch-based modelling to create 3D virtual models, interaction and navigation in a 3D modelling environment and advanced editing tools for free-form deformation and objects composition. To pursuing these goals we wondered how new gesture-based interaction technologies can be successfully employed in a 3D modelling environments, how we could improve the depth perception and the interaction in 3D environments and which operations could be developed to simplify the classical virtual models editing paradigm. Our main aims were to propose a set of solutions with which a common user can realize an idea in a 3D virtual model, drawing in the air just as he would on paper. Moreover, we tried to use gestures and mid-air movements to explore and interact in 3D virtual environment, and we studied simple and effective 3D form transformations. The work was carried out adopting the discrete representation of the models, thanks to its intuitiveness, but especially because it is full of open challenges.
Statistical mechanics of strings with Y-junctions
Creators: name: Rivers, R. J.
name: Steer, D. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the Hagedorn transitions of string networks with Y-junctions as may occur, for example, with (p,q) cosmic superstrings. In a simplified model with three different types of string, the partition function reduces to three generalised coupled XY models. We calculate the phase diagram and show that, as the system is heated, the lightest strings first undergo the Hagedorn transition despite the junctions. There is then a second, higher, critical temperature above which infinite strings of all tensions, and junctions, exist. Conversely, on cooling to low temperatures, only the lightest strings remain, but they collapse into small loops.
Shock Profiles for Non Equilibrium Radiating Gases
Creators: name: Lin, Chunjin
name: Coulombel, Jean-Francois
name: Goudon, Thierry
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We study a model of radiating gases that describes the interaction of an inviscid gas with photons. We show the existence of smooth traveling waves called 'shock profiles', when the strength of the shock is small. Moreover, we prove that the regularity of the traveling wave increases when the strength of the shock tends to zero.
A Sr-Rich Star on the Main Sequence of Omega Centauri
Creators: name: Stanford, Laura M.
name: Da Costa, G. S.
name: Norris, John E.
name: Cannon, Russell D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Abundance ratios relative to iron for carbon, nitrogen, strontium and barium are presented for a metal-rich main sequence star ([Fe/H]=--0.74) in the globular cluster omega Centauri. This star, designated 2015448, shows depleted carbon and solar nitrogen, but more interestingly, shows an enhanced abundance ratio of strontium [Sr/Fe] ~ 1.6 dex, while the barium abundance ratio is [Ba/Fe]<0.6 dex. At this metallicity one usually sees strontium and barium abundance ratios that are roughly equal. Possible formation scenarios of this peculiar object are considered.
description: 13 pages, 3 figures. Accepted to ApJL
Eigenvalue spectra of QCD and the fate of $U_A(1)$ breaking towards the chiral limit
Creators: name: Kaczmarek, Olaf
name: Mazur, Lukas
name: Sharma, Sayantan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The finite temperature phase diagram of QCD with two massless quark flavors is not yet understood because of the subtle effects of anomalous $U_A(1)$ symmetry. In this work we address this issue by studying the fate of the anomalous $U_A(1)$ symmetry in $2+1$ flavor QCD just above the chiral crossover transition temperature $T_c$, lowering the light quark mass towards the chiral limit along line of constant physical strange quark mass. We use the gauge configurations generated using the Highly Improved Staggered Quark (HISQ) discretization on lattice volumes $32^3\times8$ and $56^3\times 8$ to study the renormalized eigenvalue spectrum of QCD with valence overlap Dirac operator. We have implemented new numerical techniques that have allowed us to measure about $100$-$200$ eigenvalues of the gauge ensembles with light quark masses $\gtrsim 0.6$ MeV. From a detailed analysis of the dependence of the renormalized eigenvalue spectrum and $U_A(1)$ breaking observables on the light quark mass, our study suggests $U_A(1)$ is broken at $T\gtrsim T_c$ even when the chiral limit is approached.
Continuous-time dynamics and error scaling of noisy highly-entangling quantum circuits
Creators: name: Donatella, Kaelan
name: Denis, Zakari
name: Boité, Alexandre Le
name: Ciuti, Cristiano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the continuous-time dynamics of highly-entangling intermediate-scale quantum circuits in the presence of dissipation and decoherence. By compressing the Hilbert space to a time-dependent "corner" subspace that supports faithful representations of the density matrix, we simulate a noisy quantum Fourier transform processor with up to 21 qubits. Our method is efficient to compute with a controllable accuracy the time evolution of intermediate-scale open quantum systems with moderate entropy, while taking into account microscopic dissipative processes rather than relying on digital error models. The circuit size reached in our simulations allows to extract the scaling behaviour of error propagation with the dissipation rates and the number of qubits. Moreover, we show that depending on the dissipative mechanisms at play, the choice of input state has a strong impact on the performance of the quantum algorithm.
description: 11 pages, 7 figures. Final version accepted in PRA
Cool Companions to White Dwarf Stars from the Two Micron All Sky Survey All Sky Data Release
Creators: name: Hoard, D. W.
name: Wachter, S.
name: Sturch, Laura K.
name: Widhalm, Allison M.
name: Weiler, Kevin P.
name: Pretorius, Magaretha L.
name: Wellhouse, Joseph W.
name: Gibiansky, Maxsim
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the culmination of our near-infrared survey of the optically spectroscopically identified white dwarf stars from the McCook & Sion catalog, conducted using photometric data from the Two Micron All Sky Survey final All Sky Data Release. The color-selection technique, which identifies candidate binaries containing a white dwarf and a low mass stellar (or sub-stellar) companion via their distinctive locus in the near-infrared color-color diagram, is demonstrated to be simple to apply and to yield candidates with a high rate of subsequent confirmation. We recover 105 confirmed binaries, and identify 28 firm candidates (20 of which are new to this work) and 21 tentative candidates (17 of which are new to this work) from the 2MASS data. Only a small number of candidates from our survey have likely companion spectral types later than M5, none of which is an obvious L type (i.e., potential brown dwarf) companion. Only one previously known WD + brown dwarf binary is detected. This result is discussed in the context of the 2MASS detection limits, as well as other recent observational surveys that suggest a very low rate of formation (or survival) for binary stars with extreme mass ratios.
description: accepted for publication in the Astronomical Journal; 46 pages, 2 figures, 4 tables
Serre-Lusztig relations for $\imath$quantum groups II
Creators: name: Chen, Xinhong
name: Letzter, Gail
name: Lu, Ming
name: Wang, Weiqiang
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: The $\imath$Serre relations and the corresponding Serre-Lusztig relations are formulated and established for arbitrary $\imath$quantum groups arising from quantum symmetric pairs of Kac-Moody type.
description: v2, 12 pages, new coauthor and references added, a section on a universality property expanded, accepted by LMP
Ανάπτυξη και επικύρωση μεθόδου υγρής χρωματογραφίας υψηλής πίεσης για τον προσδιορισμό μονομερών που απελευθερώνονται από οδοντιατρικά πολυμερικά υλικά αποκατάστασης σε βιολογικά υγρά:
Creators: name: Λειβαδιώτου, Δέσποινα Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Υγρή χρωματογραφία
Σύνθετες οδοντιατρικές ρητίνες
Βιολογικά υγρά
Liquid chromatography
Dental synthetic resins
Biological fluids

description: Σκοπός της εργασίας ήταν η ανάπτυξη και η επικύρωση μιας μεθόδου Υγρής Χρωματογραφίας Υψηλής Πίεσης (HPLC), που να χαρακτηρίζεται από ταχύτητα, ευαισθησία και απλότητα, για τον ταυτόχρονο προσδιορισμό των μονομερών BPA, BisGMA, TEGDMA και UDMA που απελευθερώνονται από σύνθετες οδοντιατρικές ρητίνες σε ορό αίματος και σε ούρα, καθώς και η μελέτη της σταθερότητάς τους κατά τη διάρκεια της αποθήκευσης. Για το διαχωρισμό και τον ταυτόχρονο προσδιορισμό των υπολειμμάτων των μονομερών που απελευθερώνονται από τα οδοντιατρικά πολυμερικά υλικά χρησιμοποιήθηκε χρωματογραφική στήλη αντίστροφης φάσης. Ως κινητή φάση επιλέχθηκε το εκλουστικό σύστημα ακετονιτρίλιο-νερό (ισοκρατική έκλουση). Ελέγχθηκε η γραμμικότητα της μεθόδου, τα όρια ανίχνευσης και ποσοτικής αποτίμησης, η επαναληψιμότητα και η ακρίβεια της μεθόδου κατά τη διάρκεια της ίδιας ημέρας, η πιστότητα και η ακρίβεια της μεθόδου κατά τη διάρκεια πέντε ημερών και, τέλος, εξετάστηκε η σταθερότητα των τεσσάρων μονομερών σε εμβολιασμένα δείγματα με ορό αίματος και ούρα κατά την αποθήκευσή τους σε θερμοκρασία δωματίου, στο ψυγείο και στην κατάψυξη, καθώς και μέσα από κύκλους ψύξης-απόψυξης.
description: The aim of the present thesis was the development of a simple and rapid HPLC method for the simultaneous determination of the monomers BPA, BisGMA, TEGDMA και UDMA released from dental polymeric materials. Chromatographic analysis was performed isocratically on a reversed phase analytical column with acetonitrile-water as mobile phase within 6 min. The developed method was validated in terms of selectivity, linearity, accuracy, precision, and sensitivity. Repeatability and between-day precision over a period of five days and the stability of the four monomers in blood serum and urine samples was studied for long-term storage, short-term storage (room temperature) and freeze and thaw cycles.
Central stars of planetary nebulae in the Galactic bulge
Creators: name: Hultzsch, P. J. N.
name: Puls, J.
name: Mendez, R. H.
name: Pauldrach, A. W. A.
name: Kudritzki, R. -P.
name: Hoffmann, T. L.
name: McCarthy, J. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Optical high-resolution spectra of five central stars of planetary nebulae (CSPN) in the Galactic Bulge have been obtained with Keck/HIRES in order to derive their parameters. Since the distance of the objects is quite well known, such a method has the advantage that stellar luminosities and masses can in principle be determined without relying on theoretical relations between both quantities. By alternatively combining the results of our spectroscopic investigation with evolutionary tracks, we obtain so-called spectroscopic distances, which can be compared with the known (average) distance of the Bulge-CSPN. This offers the possibility to test the validity of model atmospheres and present date post-AGB evolution. We analyze optical H/He profiles of five Galactic Bulge CSPN (plus one comparison object) by means of profile fitting based on state of the art non-LTE modeling tools, to constrain their basic atmospheric parameters (Teff, log g, helium abundance and wind strength). Masses and other stellar radius dependent quantities are obtained from both the known distances and from evolutionary tracks, and the results from both approaches are compared. The major result of the present investigation is that the derived spectroscopic distances depend crucially on the applied reddening law. An "average extinction law" leads to a distance of 10.7 +- 1.2 kpc, which is considerably larger than the Galactic Center distance of 8 kpc. However, we find a remarkable internal agreement of the individual spectroscopic distances of our sample objects. Due to the uncertain reddening correction, the analysis presented here cannot yet be regarded as a consistency check for our method, and a rigorous test of the CSPN evolution theory becomes only possible if this problem has been solved.
description: 22 pages, accepted for publication by A&A
Noncanonicaly Embedded Rational Map Soliton in Quantum SU(3) Skyrme Model
Creators: name: Jurciukonis, D.
name: Norvaisas, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The quantum Skyrme model is considered in non canonical bases SU(3) > SO(3) for the state vectors. A rational map ansatz is used to describe the soliton with the topological number bigger than one. The canonical quantization of the Lagrangian generates in Hamiltonian five different "moments of inertia" and negative quantum mass corrections, which can stabilize the quantum soliton solution. Explicit expressions of the quantum Lagrangian and the Hamiltonian are derived for this model soliton.
description: 11 RevTex4 pages, no figures
Testing the Disk Regulation Paradigm with Spitzer Observations. I. Rotation Periods of Pre-main Sequence Stars in the IC 348 Cluster
Creators: name: Cieza, Lucas
name: Baliber, Nairn
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present 75 new stellar rotation periods in the young cluster IC348. Stars estimated to be less massive than 0.25 Mo show a unimodal distribution with a peak at P ~1-2 d) and a tail of slower rotators, while stars estimated to be more massive than 0.2 Mo show a bimodal distribution with peaks at ~2 and ~8 d. We combine all published rotation periods in IC348 with Spitzer/IRAC photometry in order to test the disk-braking paradigm. We find no evidence that the tail of slow rotators in low-mass stars or the long period peak in high-mass stars are preferentially populated by objects with disks as might be expected based on the current disk-braking model. Also, we find no significant correlation between period and the magnitude of the IR-excess, regardless of the mass range considered. Our results do not support a strong correlation in this cluster between rotation period and the presence of a disk as predicted by disk-braking theory. Rather, they are consistent with the suggestion that the correlation between period and the amplitude of the (I-K) excess reported in the past is a secondary manifestation of the correlation between the amplitude of near-IR excess and mass. Finally, we find some indication that the disk fraction decreases significantly for stars with very short periods (P < 1.5 d). This is the only feature of our sample that could potentially be interpreted as evidence for disk braking. It has been proposed that the observational signatures of disk braking might be significantly masked by the intrinsic breadth of the initial period distribution. We argue that more rigorous modeling of angular momentum evolution and a quantitative analysis of the observational data are required before the disk-braking model can be regarded as inconsistent with observations.
description: 40 pages, 11 figures. Accepted for publication in ApJ
Therapy alteration of solid tumors based on FoundationOne comprehensive genome profiling assay
Creators: name: Kahraman, Abdullah
name: Karlin, Kirill
name: Zoche, Martin
name: Britschgi, Christian
name: Moch, Holger
name: Curioni, Alessandra
name: Siebenhüner, Alexander
Publisher: name: F1000 Research Limited
Year: 2019

description: Comprehensive genomic profiling assays that are based on next-generation sequencing can simultaneously identify hundreds of different genomic alterations in solid tissue tumor samples 1. Ultimately these assays can provide clinicians and patients with information on the mutational state of cancer-related genes for which targeted therapies and immunotherapies are available 2. Although the accuracy of these tests to detect genetic alterations is generally high, the clinical impact of such tests remains unclear. As a result clinicians and patients face great challenges in incorporating the test results into their clinical decision-making 3.
Within our institution, we investigated, which patients underwent such tests and subsequently analyzed the impact of the FoundationOne® comprehensive genome profiling test (FOne) on clinical decisions. This study will contribute to the ongoing discussions on the best time point for performing an extended tumor mutation profiling and how genomic insights can alter the clinical course of cancer patients.
Ουσιαστικοδικαιϊκές πτυχές των αδικημάτων έκδοσης πλαστών και έκδοσης – λήψης εικονικών φορολογικών στοιχείων:
Creators: name: Λαμπροπούλου, Μυρτώ Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Πλαστά φορολογικά στοιχεία
Εικονικά φορολογικά στοιχεία
Φοροδιαφυγή
Counterfeit tax documents
Virtual tax documents
Tax evasion

description: Είναι γνωστό σε όλους όσους εμπλέκονται στο κύκλωμα της αγοράς, επιχειρήσεις, λογιστές και φορολογικές αρχές, ότι τον τελευταίο καιρό παρατηρείται μία έξαρση της φοροδιαφυγής, κυρίως μέσω της έκδοσης πλαστών ή εικονικών φορολογικών στοιχείων, όχι μόνο στη χώρα μας, αλλά σε Πανευρωπαϊκό επίπεδο. Στόχος της κυβέρνησης είναι η αντιμετώπιση της φοροδιαφυγής και η άμεση ενίσχυση των δημοσίων εσόδων, γι’ αυτό και έχουν δοθεί αυστηρές και συγκεκριμένες οδηγίες προς τις ελεγκτικές αρχές για τον εντοπισμό και την πάταξη των φαινομένων αυτών, που δημιουργούν τεράστια προβλήματα στη συνοχή της κοινωνίας και στην απονομή της δικαιοσύνης, ιδίως σε περιόδους έντονης οικονομικής ύφεσης, όπως αυτή που διανύει τα τελευταία χρόνια η χώρα μας. Στην παρούσα διπλωματική εργασία εξετάζεται και αναλύεται μία από τις συχνότερες μεθόδους φοροδιαφυγής, αυτή της έκδοσης και λήψης πλαστών και εικονικών φορολογικών στοιχείων. Γίνεται προσπάθεια αποτύπωσης των τρόπων έκδοσης και λήψης τέτοιων φορολογικών στοιχείων, καθώς και των μέσων αντιμετώπισης της φοροδιαφυγής μέσω της έκδοσης πλαστών και της έκδοσης – λήψης εικονικών φορολογικών στοιχείων και των επιβαλλόμενων διοικητικών κυρώσεων και ποινών ποινικής φύσεως. Εξετάζονται επίσης οι ενδείξεις που παραπέμπουν τις ελεγκτικές αρχές στην έρευνα και τον εντοπισμό τέτοιου είδους φορολογικών στοιχείων, αναλύεται η προσπάθεια καταπολέμησης της διεθνούς φοροδιαφυγής και γίνονται κάποιες προτάσεις για πιο ουσιαστική αντιμετώπιση του φαινομένου της φοροδιαφυγής γενικά.
description: It is known to all those involved in the circuit of the market, businesses, accountants and tax authorities, that lately there has been a spate of tax evasion, mainly through the issuance of forged or virtual tax records, not only in our country but all over Europe. The government aims at tackling tax evasion and support directly public revenue, so they have given strict and specific instructions to the supervisory authorities to detect and combat these phenomena, creating huge problems to social cohesion and administration of justice, particularly in times of economic recession, as the recent years in our country. In the present thesis is consequently examined one of the commonest methods of tax evasion by issuing and receiving counterfeit and virtual tax documents. There is an effort to present 1) the methods of issuing and receiving such tax documents, 2) the instruments for combating the tax evasion by issuing counterfeit and by issuing or receiving virtual tax documents and 3) the imposed administrative sanctions and criminal punishments.
Unmasking the nodal quasiparticle dynamics in cuprate superconductors using low-energy photoemission
Creators: name: Yamasaki, T.
name: Yamazaki, K.
name: Ino, A.
name: Arita, M.
name: Namatame, H.
name: Taniguchi, M.
name: Fujimori, A.
name: Shen, Z. -X.
name: Ishikado, M.
name: Uchida, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Nodal quasiparticles of Bi2Sr2CaCu2O8 have been studied by angle-resolved photoemission spectroscopy with high momentum and energy resolution. Low-energy tunable photons have enabled us to resolve a small nodal bilayer splitting, unmasking the intrinsic single-particle scattering rate. The nodal scattering rate is abruptly suppressed upon the superconducting transition, and shows a linear energy dependence at low energies, indicating the nontrivial effect of elastic scatterings on the quasiparticles. With increasing energy, the antibonding-band scattering rate becomes higher than the bonding one. The observations imply the character of the scatterers dominant at low energies.
description: 4 pages, 5 figures
Search for topological defect dark matter with a global network of optical magnetometers
Creators: name: Afach, Samer
name: Buchler, Ben C.
name: Budker, Dmitry
name: Dailey, Conner
name: Derevianko, Andrei
name: Dumont, Vincent
name: Figueroa, Nataniel L.
name: Gerhardt, Ilja
name: Grujić, Zoran D.
name: Guo, Hong
name: Hao, Chuanpeng
name: Hamilton, Paul S.
name: Hedges, Morgan
name: Kimball, Derek F. Jackson
name: Kim, Dongok
name: Khamis, Sami
name: Kornack, Thomas
name: Lebedev, Victor
name: Lu, Zheng-Tian
name: Masia-Roig, Hector
name: Monroy, Madeline
name: Padniuk, Mikhail
name: Palm, Christopher A.
name: Park, Sun Yool
name: Paul, Karun V.
name: Penaflor, Alexander
name: Peng, Xiang
name: Pospelov, Maxim
name: Preston, Rayshaun
name: Pustelny, Szymon
name: Scholtes, Theo
name: Segura, Perrin C.
name: Semertzidis, Yannis K.
name: Sheng, Dong
name: Shin, Yun Chang
name: Smiga, Joseph A.
name: Stalnaker, Jason E.
name: Sulai, Ibrahim
name: Tandon, Dhruv
name: Wang, Tao
name: Weis, Antoine
name: Wickenbrock, Arne
name: Wilson, Tatum
name: Wu, Teng
name: Wurm, David
name: Xiao, Wei
name: Yang, Yucheng
name: Yu, Dongrui
name: Zhang, Jianwei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Experiment (hep-ex)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Ultralight bosons such as axion-like particles are viable candidates for dark matter. They can form stable, macroscopic field configurations in the form of topological defects that could concentrate the dark matter density into many distinct, compact spatial regions that are small compared to the galaxy but much larger than the Earth. Here, we report the results of a search for transient signals from axion-like particle domain walls with the Global Network of Optical Magnetometers for Exotic physics searches (GNOME). We search the data, consisting of correlated measurements from optical atomic magnetometers located in laboratories all over the world, for patterns of signals propagating through the network consistent with domain walls. The analysis of data from a continuous month-long operation of the GNOME finds no statistically significant signals, thus placing experimental constraints on such dark matter scenarios.
description: 25 pages, 6 figures, 2 tables
IR Inflation from Multiple Branes
Creators: name: thomas, Steven
name: Ward, John
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper we examine the IR inflation scenario using the DBI action, where we have $N$ multiple branes located near the tip of a warped geometry. At large $N$ the solutions are similar in form to the more traditional single brane models, however we find that it is difficult to simultaneously satisfy the WMAP bounds on the scalar amplitude and the scalar spectral index. We go on to examine two new solutions where N=2 and N=3 respectively, which both have highly non-linear actions. The sound speed in both cases is dramatically different from previous works, and for the N=3 case it can actually be zero. We show that inflation is possible in both frameworks, and find that the scalar spectral index is bounded from above by unity. The level of non-gaussian fluctuations are smaller in the N=2 case compared to the single brane models, whilst those in the N=3 case are much larger.
description: Final Journal version
Error analysis of a decoupled finite element method for quad-curl problems
Creators: name: Cao, Shuhao
name: Chen, Long
name: Huang, Xuehai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65N30, 65N12, 65N22, 65N50

description: Finite element approximation to a decoupled formulation for the quad--curl problem is studied in this paper. The difficulty of constructing elements with certain conformity to the quad--curl problems has been greatly reduced. For convex domains, where the regularity assumption holds for Stokes equation, the approximation to the curl of the true solution has quadratic order of convergence and first order for the energy norm. If the solution shows singularity, an a posterior error estimator is developed and a separate marking adaptive finite element procedure is proposed, together with its convergence proved. Both the a priori and a posteriori error analysis are supported by the numerical examples.
Measurement of tensor analyzing powers in deuteron photodisintegration
Creators: name: Rachek, I. A.
name: Barkov, L. M.
name: Belostotsky, S. L.
name: Dmitriev, V. F.
name: Dyug, M. V.
name: Gilman, R.
name: Holt, R. J.
name: Lazarenko, B. A.
name: Mishnev, S. I.
name: Nelyubin, V. V.
name: Nikolenko, D. M.
name: Osipov, A. V.
name: Potterveld, D. H.
name: Sadykov, R. Sh.
name: Shestakov, Yu. V.
name: Stibunov, V. N.
name: Toporkov, D. K.
name: de Vries, H.
name: Zevakov, S. A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: New accurate measurement of tensor analyzing powers T20, T21 and T22 in deuteron photodisintegration has been performed. Wide-aperture non-magnetic detectors allowed to cover broad kinematic ranges in a single setup: photon energy = 25 to 600 MeV, proton emission angle in CM = 24 to 48 deg. and 70 to 102 deg. New data provide a significant improvement of a few existing measurements. The angular dependency of the tensor asymmetries in deuteron photodisintegration is extracted for the first time.
description: 4 pages, 5 figures, submitted to Phys. Rev. Lett
Χρωμόνες στη σύνθεση ετεροκυκλικών θειούχων συστημάτων:
Creators: name: Δρόσος, Νικόλαος Μάνθου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Χρωμόνες
Σύνθεση
Ετεροκυκλικές
Chromones
Synthesis
Heterocyclic

description: Σκοπός της διατριβής ήταν η σύνθεση ετεροκυκλικών συστημάτων που να συνδυάζουν τον χρωμονικό δακτύλιο με άλλους βιολογικά δραστικούς δακτυλίους. Η μελέτη μας αποτελείται από τρείς υποενότητες. Αρχικά, εξετάσαμε την αντίδραση υποκατεστημένων 3-φορμυλοχρωμονών με το 2-αμινοβενζιμιδαζόλιο και στη συνέχεια την αντίδραση του προϊόντος που προκύπτει με το θειογλυκολικό οξύ σχηματίζοντας έτσι ένα νέο θειαζολιδινικό δακτύλιο. Ακόμη, χρησιμοποιήσαμε την 3-φορμυλοχρωμόνη σε αντιδράσεις τύπου Ugi προκειμένου να συνδυάσουμε τον χρωμονικό δακτύλιο με άλλους ετεροκυκλικούς δακτυλίους όπως ο χρωμονικός, ο ινδολικός και ο ιμιδαζολικός. Τέλος χρησιμοποιήθηκε πάλι η 3-φορμυλοχρωμόνη για τη σύνθεση βενζοπυρανοθειαζολιδινονών συνθέτοντας αρχικά τις φαινυλυδραζόνες υποκατεστημένων φορμυλοχρωμονών και στη συνέχεια μελετώντας την αντίδραση τους με το θειογλυκολικό οξύ. Ασχοληθήκαμε επιπλέον με την φασματοσκοπική μελέτη και ταυτοποίηση των προϊόντων που συντέθηκαν από τις παραπάνω μελέτες.
description: The aim of the present thesis was the synthesis of heterocyclic systems in which the chromone ring is combined with other biologically active rings. Our study is subdivided in three subsections. Initially we studied the reaction of substituted 3-formylchromones with 2-aminobenzimidazole and then the reaction of the product formed with thioglycolic acid thus forming a new thiazolidinone ring. We also used 3-formylchromone in Ugi reactions in order to combine the chromone ring with other heterocyclic rings such as the chromone the indole and the imidazole ring. Last, we used 3-formylchromone in the synthesis of benzopyranthiazolidines by synthesizing the phenylhydrazones of substituted formylchromones and then studying their reactions with thioglycolic acid. Another aim of this study was the identification and the spectroscopic study of the products that we synthesized.
Lattice Simulations of Inflation
Creators: name: Caravano, Angelo
name: Komatsu, Eiichiro
name: Lozanov, Kaloian D.
name: Weller, Jochen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The scalar field theory of cosmological inflation constitutes nowadays one of the preferred scenarios for the physics of the early universe. In this paper we aim at studying the inflationary universe making use of a numerical lattice simulation. Various lattice codes have been written in the last decades and have been extensively used for understating the reheating phase of the universe, but they have never been used to study the inflationary phase itself far from the end of inflation (i.e. about 50 e-folds before the end of inflation). In this paper we use a lattice simulation to reproduce the well-known results of some simple models of single-field inflation, particularly for the scalar field perturbation. The main model that we consider is the standard slow-roll inflation with an harmonic potential for the inflaton field. We explore the technical aspects that need to be accounted for in order to reproduce with precision the nearly scale invariant power spectrum of inflaton perturbations. We also consider the case of a step potential, and show that the simulation is able to correctly reproduce the oscillatory features in the power spectrum of this model. Even if a lattice simulation is not needed in these cases, that are well within the regime of validity of linear perturbation theory, this sets the basis to future work on using lattice simulations to study more complicated models of inflation.
description: 18 pages, 10 figures. Various changes from the previous version, matching the version published in JCAP. Added a new appendix and two figures
Η επίδραση του νεοσυντηρητισμού στις ΗΠΑ:
Creators: name: Οικονόμου, Ελένη Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Νεοσυντηρητισμός
Συντηρητισμός
ΗΠΑ
Neoconservatism
Conservatism
U.S.A.

description: Σκοπός της παρούσας μεταπτυχιακής εργασίας ήταν να παρουσιάσει την πορεία του νεοσυντηρητισμού στις Η.Π.Α.– ως πολιτικού και κοινωνικού φαινομένου - από την αρχή του έως σήμερα και να αναδείξει τις σημαντικότερες από τις αλλαγές που έχει υποστεί το περιεχόμενό του στην πορεία των χρόνων που παραμένει ενεργός. Καθώς ο νεοσυντηρητισμός δεν αποτελεί μόνο πολιτική ιδεολογία, αλλά ένα ευρύτερο ιδεολογικό σύστημα, εξετάζονται και οι θέσεις του που έχουν να κάνουν με την κοινωνία και τη θρησκεία, εκτός από αυτές που αφορούν την οικονομία και την εξωτερική πολιτική. Παρουσιάζονται τόσο οι απόψεις επιφανών στοχαστών του νεοσυντηρητισμού, όσο και επικριτών αυτού. Επιπλέον, θίγεται το θέμα της επιρροής των νεοσυντηρητικών στη διαμόρφωση της πολιτικής των Η.Π.Α επί σειρά ετών, καθώς και το εάν το κίνημα πρόκειται να επιβιώσει στο μέλλον.
description: The aim of the present study was to present the history of neosonservatism – as a political and sociological phenomenon- from its beginning to the present, in the U.S.A., and to demonstrate how it has evolved through the years . Neoconservatism is more than a political ideology, it is a system of ideas, thus this study examines the ideas of neoconservatists about society and religion, in addition to those concerning economic and foreign policy issues. We present the views of prominent neoconservative thinkers, as well as views that thinkers opposed to neoconservatism have expressed. Furthermore, we examine whether the U.S. governmental policy was influenced by the neoconservatists through the years and we conclude wondering about the future of neoconservatism.
The Role of Tumor Treating Fields (TTFields) in the Management of High-Grade Gliomas
Creators: name: Farooq, Mustafa
name: Patel, Rahul
name: Farooq, Maheen
name: Mehra, Mehul
Publisher: name: Continental Journal of Medical Research
Year: 2024

description: Abstract

This paper explores the role of Tumor Treating Fields (TTFields) in managing high-grade gliomas, particularly glioblastoma multiforme (GBM), through non-invasive electric field-based therapy. It highlights how TTFields disrupt mitosis in rapidly dividing tumor cells by targeting key proteins, such as tubulin and septin, involved in spindle formation during cell division. The therapy selectively induces mitotic arrest and apoptosis, sparing non-dividing healthy cells, thus minimizing side effects. Preclinical evidence supports TTFields' efficacy in disrupting cancer cell division and enhancing the effects of chemotherapy, particularly temozolomide. The EF-14 trial established TTFields as a standard therapy for newly diagnosed GBM, showing significant improvements in overall and progression-free survival compared to chemotherapy alone. Real-world data from the PRiDe registry corroborate these findings, demonstrating similar survival benefits and a favorable safety profile. Challenges include patient compliance due to the device’s daily usage requirements and cost-related barriers. Ongoing research explores the combination of TTFields with immunotherapy, radiation, and novel therapeutic agents, as well as its potential applications in other solid tumors. Future studies may focus on improving patient adherence, expanding therapeutic combinations, and refining device technology for broader cancer treatment applicability.

Keywords

High-grade gliomas, Tumor Treating Fields, TTFields, glioblastoma, non-invasive therapy, electric fields, cancer treatment
Quantum storage and cloning of light states in EIT-like medium
Creators: name: Alodjants, A. P.
name: Arakelian, S. M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In the paper we consider a new approach for storage and cloning of quantum information by three level atomic (molecular) systems in the presence of the electromagnetically induced transparency (EIT) effect. For that, the various schemes of transformation into the bright and dark polaritons for quantum states of optical field in the medium are proposed. Physical conditions of realization of quantum nondemolition (QND) storage of quantum optical state are formulated for the first time. We have shown that the best storage and cloning of can be achieved with the atomic ensemble in the Bose-Einstein condensation state. We discuss stimulated Raman two-color photoassociation for experimental realization of the schemes under consideration.
description: 13 pages, 4 postscript figures, uses ws-ijmpb.cls