cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Evaluating Machine Learning-Driven Intrusion Detection Systems in IoT: Performance and Energy Consumption
Creators: name: Jamshidi, Saeid
name: Nafi, Kawser Wazed
name: Nikanjam, Amin
name: Khomh, Foutse
Publisher: name: arXiv
Year: 2025
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In the evolving landscape of the Internet of Things (IoT), Machine Learning (ML)-based Intrusion Detection Systems (IDS) represent a significant advancement, especially when integrated with Software-Defined Networking (SDN). These systems play a critical role in enhancing security infrastructure within resource-constrained IoT systems. Despite their growing adoption, limited research has explored the impact of ML-based IDS on key performance metrics, such as CPU load, CPU usage, and energy consumption, particularly under real-time cyber threats. This study bridges that gap through an empirical evaluation of cutting-edge ML-based IDSs deployed at the edge of IoT networks under both benign and attack scenarios. Additionally, we investigate how SDN's centralized control and dynamic resource management influence IDS performance. Our experimental framework compares traditional ML-based IDS with deep learning (DL)-based counterparts, both with and without SDN integration. Results reveal that edge-deployed ML-based IDSs significantly impact system performance during cyber threats, with marked increases in resource consumption. SDN integration further influences these outcomes, emphasizing the need for optimized architectural design. Statistical analysis using ANOVA confirms the significance of our findings. This research provides critical insights into the performance and trade-offs of deploying ML-based IDSs in edge-based IoT systems.
description: Computers & Industrial Engineering (2025)
Enhancement of charge instabilities in Hund's metals by the breaking of rotational symmetry
Creators: name: Chatzieleftheriou, Maria
name: Berović, Maja
name: Arribi, Pablo Villar
name: Capone, Massimo
name: Medici, Luca de'
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze multi-orbital Hubbard models describing Hund's metals, focusing on the ubiquitous occurrence of a charge instability, signalled by a divergent/negative electronic compressibility, in a range of doping from the half-filled Mott insulator corresponding to the frontier between Hund's and normal metals. We show that the breaking of rotational invariance favors this instability: both spin-anisotropy in the interaction and crystal-field splitting among the orbitals make the instability zone extend to larger dopings, making it relevant for real materials like iron-based superconductors. These observations help us build a coherent picture of the occurrence and extent of this instability. We trace it back to the partial freezing of the local degrees of freedom in the Hund's metal, which reduces the allowed local configurations and thus the quasiparticle itinerancy. The abruptness of the unfreezing happening at the Hund's metal frontier can be directly connected to a rapid change in the electronic kinetic energy and thus to the enhancement and divergence of the compressibility.
description: 16 pages, 11 figures
A Spinor Theory of Gravity and the Cosmological Framework
Creators: name: Novello, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recently we have presented a new formulation of the theory of gravity based on an implementation of the Einstein Equivalence Principle distinct from General Relativity. The kinetic part of the theory - that describes how matter is affected by the modified geometry due to the gravitational field - is the same as in General Relativity. However, we do not consider the metric as an independent field. Instead, it is an effective one, constructed in terms of two fundamental spinor fields $Ψ$ and $Υ$ and thus the metric does not have a dynamics of its own, but inherits its evolution through its relation with the fundamental spinors. In the first paper it was shown that the metric that describes the gravitational field generated by a compact static and spherically symmetric configuration is very similar to the Schwarzschild metric. In the present paper we describe the cosmological framework in the realm of the Spinor Theory of Gravity.
Gate-tunable chiral phonons in low-buckled group-IVA monolayers
Creators: name: Wang, Hanyu
name: Zhou, Zhichao
name: Chen, Hao
name: Xia, Chongqun
name: Zhang, Lifa
name: Li, Xiao
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the electric response of chiral phonons on the low-buckled group-IVA monolayers by performing first-principles calculations. The vertical electric field breaks the degeneracy of phonon modes at high-symmetry $\pm K$ points of the phonon Brillouin zone, and the size of the phononic gap is proportional to the strength of the electric field. The gapped phonon modes at $\pm K$ possess chiralities with considerable phonon circular polarizations and discrete phonon pseudoangular momenta. The chiralities of phonons are robust against the variation of the field strength, but reversed by changing the field direction. Electric control of chiral phonons adds a new dimension to the study of chiral phonons, which has potential use in the design of phononic and valley devices.
description: 6 pages, 6 figures
Inplane spin orbit torque magnetization switching and its detection using the spin rectification effect at sub-GHz frequencies
Creators: name: Aoki, Motomi
name: Shigematsu, Ei
name: Ohshima, Ryo
name: Honda, Syuta
name: Shinjo, Teruya
name: Shiraishi, Masashi
name: Ando, Yuichiro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inplane magnetization reversal of a permalloy/platinum bilayer was detected using the spin rectification effect. Using a sub GHz microwave frequency to excite spin torque ferromagnetic resonance (ST FMR) in the bilayer induces two discrete DC voltages around an external static magnetic field of 0 mT. These discrete voltages depend on the magnetization directions of the permalloy and enable detection of the inplane magnetization reversal. The threshold current density for the magnetization reversal is from 10 to 20 MA/cm^2, the same order as for known spin orbit torque (SOT) switching with in-plane magnetization materials. The magnitude of the signal is the same or larger than that of the typical ST FMR signal; that is, detection of magnetization switching is highly sensitive in spite of deviation from the optimal ST-FMR condition. The proposed method is applicable to a simple device structure even for a small ferromagnetic electrode with a width of 100 nm.
Dynamics of Vortex Core Switching in Ferromagnetic Nanodisks
Creators: name: Xiao, Q. F.
name: Rudge, J.
name: Choi, B. C.
name: Hong, Y. K.
name: Donohoe, G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Dynamics of magnetic vortex core switching in nanometer-scale permalloy disk, having a single vortex ground state, was investigated by micromagnetic modeling. When an in-plane magnetic field pulse with an appropriate strength and duration is applied to the vortex structure, additional two vortices, i.e., a circular- and an anti-vortex, are created near the original vortex core. Sequentially, the vortex-antivortex pair annihilates. A spin wave is created at the annihilation point and propagated through the entire element; the relaxed state for the system is the single vortex state with a switched vortex core.
description: to appear in Appl. Phys. Lett
A Simplified Photodynamical Model for Planetary Mass Determination in Low-Eccentricity Multi-Transiting Systems
Creators: name: Yoffe, Gideon
name: Ofir, Aviv
name: Aharonson, Oded
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Inferring planetary parameters from transit timing variations is challenging for small exoplanets because their transits may be so weak that determination of individual transit timing is difficult or impossible. We implement a useful combination of tools which together provide a numerically fast global photodynamical model. This is used to fit the TTV-bearing light-curve, in order to constrain the masses of transiting exoplanets in low eccentricity, multi-planet systems - and small planets in particular. We present inferred dynamical masses and orbital eccentricities in four multi-planet systems from Kepler's complete long-cadence data set. We test our model against Kepler-36 / KOI-277, a system with some of the most precisely determined planetary masses through TTV inversion methods, and find masses of 5.56 +0.41 -0.45 and 9.76 +0.79 -0.89 m_earth for Kepler-36 b and c, respectively - consistent with literature in both value and error. We then improve the mass determination of the four planets in Kepler-79 / KOI-152, where literature values were physically problematic to 12.5 +4.5 -3.6, 9.5 +2.3 -2:1, 11.3 +2.2 -2.2 and 6.3 +1.0 -1.0 m_earth for Kepler-79 b, c, d and e, respectively. We provide new mass constraints where none existed before for two systems. These are 12.5 +3.2 -2.6 m_earth for Kepler-450 c, and 3.3 +1.7 -1.0 and 17.4 +7.1 -3.8 m_earth for Kepler-595 c (previously KOI-547.03) and b, respectively. The photodynamical code used here, called PyDynamicaLC, is made publicly available.
The hypertoric intersection cohomology ring
Creators: name: Braden, Tom
name: Proudfoot, Nicholas J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: Algebraic Topology (math.AT)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 14F43; 53C26; 52C35

description: We present a functorial computation of the equivariant intersection cohomology of a hypertoric variety, and endow it with a natural ring structure. When the hyperplane arrangement associated with the hypertoric variety is unimodular, we show that this ring structure is induced by a ring structure on the equivariant intersection cohomology sheaf in the equivariant derived category. The computation is given in terms of a localization functor which takes equivariant sheaves on a sufficiently nice stratified space to sheaves on a poset.
description: Significant revisions in Section 5, with several corrected proofs
Fractional S-branes on a Spacetime Orbifold
Creators: name: Kawai, Shinsuke
name: Keski-Vakkuri, Esko
name: Leigh, Robert G.
name: Nowling, Sean
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Unstable D-branes are central objects in string theory, and exist also in time-dependent backgrounds. In this paper we take first steps to studying brane decay in spacetime orbifolds. As a concrete model we focus on the R^{1,d}/Z_2 orbifold. We point out that on a spacetime orbifold there exist two kinds of S-branes, fractional S-branes in addition to the usual ones. We investigate their construction in the open string and closed string boundary state approach. As an application of these constructions, we consider a scenario where an unstable brane nucleates at the origin of time of a spacetime, its initial energy then converting into energy flux in the form of closed strings. The dual open string description allows for a well-defined description of this process even if it originates at a singular origin of the spacetime.
description: 22 pages, 6 eps figures
Nonlinear Interactions Between Gravitational Radiation and Modified Alfven Modes in Astrophysical Dusty Plasmas
Creators: name: Forsberg, Mats
name: Brodin, Gert
name: Marklund, Mattias
name: Shukla, Padma K.
name: Moortgat, Joachim
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present an investigation of nonlinear interactions between Gravitational Radiation and modified Alfvén modes in astrophysical dusty plasmas. Assuming that stationary charged dust grains form neutralizing background in an electron-ion-dust plasma, we obtain the three wave coupling coefficients, and calculate the growth rates for parametrically coupled gravitational radiation and modified Alfvén-Rao modes. The threshold value of the gravitational wave amplitude associated with convective stabilization is particularly small if the gravitational frequency is close to twice the modified Alfvén wave-frequency. The implication of our results to astrophysical dusty plasmas is discussed.
description: A few typos corrected. Published in Phys. Rev. D
Toward Fault-Tolerant Deadlock-Free Routing in HyperSurface-Embedded Controller Networks
Creators: name: Saeed, Taqwa
name: Soteriou, Vassos
name: Liaskos, Christos
name: Pitsillides, Andreas
name: Lestas, Marios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: HyperSurfaces (HSFs) consist of structurally reconfigurable metasurfaces whose electromagnetic properties can be changed via a software interface, using an embedded miniaturized network of controllers. With the HSF controllers, interconnected in an irregular, near-Manhattan geometry, we propose a robust, deterministic Fault-Tolerant (FT), deadlock- and livelock-free routing protocol where faults are contained in a set of disjointed rectangular regions called faulty blocks. The proposed FT protocol can support an unbounded number of faulty nodes as long as nodes outside the faulty blocks are connected. Simulation results show the efficacy of the proposed FT protocol under various faulty node distribution scenarios.
La funzione limitatrice dei principi - valori costituzionali nella giurisprudenza costituzionale. Riflessi ed implicazioni sulla legalità penale
The fundamental role of principles-values in constitutional adjudication. The effects on criminal law
Creators: name: Romano, Stella <1987>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: IUS/08 Diritto costituzionale

description: La tesi di ricerca si propone di indagare il riflesso che i principi/valori producono sul parametro nel sindacato di legittimità costituzionale, al fine di verificarne le implicazioni sulla legalità, in termini di prevedibilità e certezza. In particolare, delineata la connessione tra principi e valori costituzionali e, ricostruito, secondo la teoria dell'ordinamento, il rapporto tra valori e normatività,si analizzano i riflessi prodotti, sul piano interpretativo, dall’apertura del parametro costituzionale alla logica dei valori, enfatizzandone le ricadute sul controllo di costituzionalità delle leggi. Identificato il nesso tra principi e valori nella capacità funzionale dei primi di realizzare i diritti fondamentali, si è inteso rimarcare come la più estesa realizzazione dei principi-valori costituzionali potrebbe compiersi a spese della legge e della certezza del diritto, in una relazione inversamente proporzionale. Ciò apparirebbe evidente dall’ottica privilegiata della materia penale, per cui una legalità materiale, letta alla luce di criteri di adeguatezza e di ragionevole proporzione, seppur vicina alle esigenze di giustizia del caso concreto, se spinta in eccessi interpretativi rischia di invadere il campo del legislatore, unico deputato a compiere scelte di valore.
description: The thesis aims to investigate the effects that principles/ values ​​product on the constitutional parameter, in order to verify the impact on the legality in terms of predictability and certainty. In particular, outlined the connection between constitutional principles and values, and rebuilit, at the same time, the relationship between values ​​and normativity, we analyze the effects that the logic of values product on the constitutional parameter, emphasizing the impact on the constitutional judgement. So identified the link between principles and values in the functional capacity of the first to realize the fundamental rights, the intention is to point out how the most extensive implementation of the principles-constitutional values could be accomplished at the expense of the law and of legal certainty in a relationship inversely proportional. This would appear evident from  the privileged optic of criminal matters,for which the legality, read in the light of criteria of adequacy and reasonable proportion, closed to the needs of the justice of the case, if pushed in excess of interpretation threatens to invade the field of the legislature, the only deputy to make value choices.
Long-range ferromagnetic correlations between Anderson impurities in a semiconductor host
Creators: name: Bulut, N.
name: Tanikawa, K.
name: Takahashi, S.
name: Maekawa, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the two-impurity Anderson model for a semiconductor host using the quantum Monte Carlo technique. We find that the impurity spins exhibit ferromagnetic correlations with a range which can be much more enhanced than in a half-filled metallic band. In particular, the range is longest when the Fermi level is located above the top of the valence band and decreases as the impurity bound state becomes occupied. Comparisons with the photoemission and optical absorption experiments suggest that this model captures the basic electronic structure of Ga_{1-x}Mn_xAs, the prototypical dilute magnetic semiconductor (DMS). These numerical results might also be useful for synthesizing DMS or dilute-oxide ferromagnets with higher Curie temperatures.
description: 4 pages, 4 figures
Mainstreaming (in)equity: preservice teacher defensiveness toward feminism
Creators: name: McLean, Louise Frances
Publisher: name: University of British Columbia
Year: 2009

description: While feminist theorists work to provide better ways of understanding the complexities of women's lives, feminist pedagogues tackle the growing difficulties of teaching feminism. Through analyzing various forms of defensiveness, we may determine how progressive pedagogies could better address the complexities of the classroom. By studying what happens when a feminist teaches a coeducational pre-service teacher core course that treats gender as an add-on, I illuminate various forms of defensiveness (e.g., masculine, feminine, social class, heterosexual). In doing so, I not only re-present pre-service teachers' engagement and disengagement in feminist analyses of education, but also contribute to feminist pedagogy debates. By examining consecutive interviews and classroom observations, I consider ways in which a feminist perspective informs the teaching of "gender equity" in a mainstream course and how pre-service teachers react to feminist analyses. In addition, I analyze how teaching gender equity as an add-on critiques "malestream: education, particularly when taught by a feminist. These analyses illuminate some of the institutional tensions involved in addressing anti-oppression issues and some of the difficulties facing feminist and pro-feminist instructors in university classrooms, particularly in a teacher education core course. After analyzing attempts made by a particular university to publicly mediate feminist struggles within a core teacher education course, I consider some institutional and pedagogical implications to improve classroom atmosphere.
Phase detection at the quantum limit with multi-photon Mach-Zehnder interferometry
Creators: name: Pezze, L.
name: Smerzi, A.
name: Khoury, G.
name: Hodelin, J. F.
name: Bouwmeester, D.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study a Mach-Zehnder interferometer fed by a coherent state in one input port and vacuum in the other. We explore a Bayesian phase estimation strategy to demonstrate that it is possible to achieve the standard quantum limit independently from the true value of the phase shift and specific assumptions on the noise of the interferometer. We have been able to implement the protocol using parallel operation of two photon-number-resolving detectors and multiphoton coincidence logic electronics at the output ports of a weakly-illuminated Mach-Zehnder interferometer. This protocol is unbiased and saturates the Cramer-Rao phase uncertainty bound and, therefore, is an optimal phase estimation strategy.
description: 4 pages, 5 figures replaced fig. 1 to correct graphics bug
Η επίδραση του μακροσκοπικού σχεδιασμού των οδοντικών εμφυτευμάτων στην οστεοενσωμάτωση
Creators: name: Ζωγάκης, Αντώνιος Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Μακροσχεδιασμός
Οστεοενσωμάτωση
Εμφυτεύματα
Macrodesign
Osseointegration
Dental implants

description: Η μακρομορφολογία των οστεοενσωματούμενων εμφυτευμάτων αποτελεί καθοριστικό παράγοντα τόσο της επίτευξης οστεοενσωμάτωσης όσο και της διατήρησης αυτής, με τελικό στόχο τη λειτουργική κι αισθητική επιτυχία της εμφυτευματικής θεραπείας. Επομένως, η αναζήτηση νέων στοιχείων μακρομορφολογίας δικαιολογημένα καταλαμβάνει μεγάλο μέρος της σύγχρονης έρευνας στον τομέα της εμφυτευματολογίας. Τα κυριότερα στοιχειά μακρομορφολογίας των εμφυτευματικών συστημάτων αποτελούν η διάμετρος, το μήκος, η κωνικότητα, η μορφολογία των σπειρών και οι τροποποιήσεις στην περιοχή του αυχένα αυτών.Σκοπός της παρούσης διπλωματικής διατριβής είναι η βιβλιογραφική ανασκόπηση των ερευνών γύρω από τα στοιχειά αυτά, με έμφαση στις έρευνες που διεξήχθησαν την τελευταία εικοσαετία. Παρατίθενται όλα τα διαθέσιμα στοιχεία από μελέτες προσομοίωσης σε υπολογιστή με τη μέθοδο των πεπερασμένων στοιχείων, από πειραματικές και ιστολογικές μελέτες σε πειραματόζωα κι ανθρώπους και τέλος από κλινικές μελέτες που έχουν και την πλέον βαρύνουσα σημασία.
description: Macrodesign of osseointegrated implants constitutes an important factor both in obtaining and maintaining osseointegration, resulting in functional and esthetic success of implant treatment. Consequently, it is absolutely justified that invention of new macrodesign features is a subject of a large part of current research conducted in the field of oral implantology. Major macrodesign features of dental implants include diameter, length, taper, thread shape and implant neck modifications.The aim of the present master thesis is a literature review of studies focusing on dental implant macrodesign features, with an emphasis on studies conducted during the last 20 years. All available data from Finite Element Analysis studies, experimental/histological studies in both animals and humans, and finally clinical studies which are of the greatest importance, is presented in this paper.
Low-Temperature Kinetic Isotope Effects in CH3OH+H -> CH2OH+H2 Shed Light on the Deuteration of Methanol in Space
Creators: name: Cooper, April. M.
name: Kästner, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We calculated reaction rate constants including atom tunneling for the hydrogen abstraction reaction CH3OH+H -> CH2OH+H2 with the instanton method. The potential energy was fitted by a neural network, that was trained to UCCSD(T)-F12/VTZ-F12 data. Bimolecular gas-phase rate constants were calculated using microcanonic instanton theory. All H/D isotope patterns on the CH3 group and the incoming H atom are studied. Unimolecular reaction rate constants, representing the reaction on a surface, down to 30 K, are presented for all isotope patterns. At 30 K they range from 4100 for the replacement of the abstracted H by D to ~ 8 for the replacement of the abstracting H to about 2--6 for secondary KIEs. The $^\text{12}$C/$^\text{13}$C kinetic isotope effect is 1.08 at 30 K, while the $^\text{16}$O/$^\text{18}$O kinetic isotope effect is vanishingly small. A simple kinetic surface model using these data predicts high abundances of the deuterated forms of methanol.
title: Hydrologic Modeling of the Lower Chesapeake Bay Watershed Using HECC-HMS with Implications for Future Coupled Coastal Modeling
Creators: name: Frost, Christopher Leonard
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 2024

description: This study explores the hydrological methodology for modeling a coastal watershed basin using the US Army Corps of Engineers hydrologic software, HEC-HMS with an objective of being able to create riverine boundary conditions that could be applied to a coupled compound flood model. Compound flooding is defined as high water inundation event that occurs due to the simultaneous occurrence of multiple flooding drivers. The Atlantic Seaboard and the Gulf of Mexico regions of the United States account for most of the compound events observed in the United States with a higher occurrence caused by hurricanes from July to November. In this study three events were modeled for the Lower Chesapeake Watershed in Virginia: Tropical Storm Andrea, Michael, and Zeta. Each event was modeled using Modified Clark transform, simple canopy interception and loss, Green and Ampt or deficit & constant infiltration loss, linear base flow, and Muskingum-Cunge routing. Gridded precipitation and temperature were applied as boundary conditions for each event. Results from the models indicated large differences between event model parameters with difficulties in modeling and calibrating the coastal transition zone. Calibration statistics to observed data was generally within acceptable statistical parameters using Nash Sutcliff, R-squared, and percent bias.
Η ελληνική οικονομική κρίση και οι επιδράσεις της στην εθνική κυριαρχία
Creators: name: Κουγιουμτζόγλου, Βασιλική Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Οικονιμική κρίση
Μνημόνιο
Κυριαρχία
Economic crisis
Memorandum
Sovereignty

description: Ο σκοπός της εργασίας έγκειται στην κατανόηση της υφιστάμενης ελληνικής οικονομικής κρίσης και της ανανοηματοδότησης που επιδέχεται η έννοια της κυριαρχίας μέσα από τους περιορισμούς του «Μνημονίου», του Stand by Arrangement και της Σύμβαση Δανειακής Διευκόλυνσης στο παγκοσμιοποιημένο περιβάλλον. Ο σκοπός αυτός επιτυγχάνεται μέσα από την ιστορική αναδρομή των περιόδων οικονομικής δυσκαμψίας που έχει βιώσει η χώρα μας, την κατανόηση της νομικής φύσης του «Μνημονίου» και της αποσαφήνισης της έννοιας της κυριαρχίας από τις απαρχές της μέχρι την εποχή της μετανεωτερικότητας. Τα διακυβεύματα του μέλλοντος επιτάσσουν την αλλαγή νοοτροπίας και αντιμετώπισης των καταστάσεων τόσο από το κράτος όσο και από τους πολίτες.
description: The aim of this work is to understand the current economic crisis and the new meaning of sovereignty beyond the restrictions she gets by the "Memorandum", the Stand by Arrangement and the Loan Facility in the globalized environment. This aim is achieved through the historical review of periods of economic inflexibility that our country had passed by, through the understanding of the legal nature of the "Memorandum" and the clarification of the meaning of sovereignty from its beginnings until the era of postmodernity. The challenges of the future require changes in culture from both the state and the citizens.
Instantons in the out-of-equilibrium Coulomb blockade
Creators: name: Dotdaev, A. S.
name: Rodionov, Ya. I.
name: Tikhonov, K. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Physical properties of single-electron devices in the week Coulomb blockade regime are significantly dependent on non-perturbative effects. They arise as instanton solutions of equations of motion for the corresponding Ambegaokar-Eckern-Schoen action. In equilibrium those solutions are known as Korshunov instantons. In this paper we study non-equilibrium Ambegaokar-Eckern- Schoen action using Keldysh technique. We found instantons for the most general stationary out-of equilibrium state. We also found that action saddle-point value assumes a universal value irrespective of the stationary non-equilibrium state.
Fragile phase stability in (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO3 crystals: A comparisons of [001] and [110] field-cooled phase diagrams
Creators: name: Cao, Hu
name: Li, Jiefang
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Phase diagrams of [001] and [110] field-cooled (FC) (1-x)Pb(Mg1/3Nb2/3O3)-xPbTiO3 or PMN-xPT crystals have been constructed, based on high-resolution x-ray diffraction data. Comparisons reveal several interesting findings. First, a region of abnormal thermal expansion above the dielectric maximum was found, whose stability range extended to higher temperatures by application of electric field (E). Second, the rhombohedral (R) phase of the ZFC state was replaced by a monoclinic MA in the [001] FC diagram, but with monoclinic MB in the [110] FC. Third, the monoclinic MC phase in ZFC and [001] FC diagram was replaced by an orthorhombic (O) phase in the [110] FC. Finally, in the [001] FC diagram, the phase boundary between tetragonal (T) and MA was extended to lower PT contents (x=0.25); whereas in the [110] FC diagram, this extended region was entirely replaced by the O phase. These results clearly demonstrate that the phase stability of PMN-xPT crystals is quite fragile, depending not only on modest changes in E, but also on the direction along which that E is applied.
description: 13 pages, 8 figures, 1 table
Magnetic Induction Imaging with a cold-atom radio-frequency magnetometer
Creators: name: Fregosi, Alessandro
name: Gabbanini, Carlo
name: Gozzini, Silvia
name: Lenci, Lorenzo
name: Marinelli, Carmela
name: Fioretti, Andrea
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The sensitive detection of either static or radio-frequency \textsc{(rf)} magnetic fields is essential to many fundamental studies and applications. Here, we demonstrate the operation of a cold-atom-based, \textsc{rf} magnetometer in performing {1-D and 2-D imaging} of small metallic objects. It is based on a cold $^{85}$Rb atomic sample, and operates in an unshielded environment with no active field stabilization. It shows a sensitivity up to $200\, \rm{pT}/\sqrt{\rm Hz}$ in the $5-35\, \rm{kHz}$ range bandwidth and can resolve a cut $0.4\, \rm{mm}$ wide in a $0.8\, \rm{mm}$ thick metallic foil. The characteristics of our system make it a good candidate for applications in civil and industrial surveillance.
description: 5 pages, 5 figures
La carta dei servizi nel settore dei trasporti e la tutela del passeggero
The Italian "Transport services charter" and passenger rights
Creators: name: Iannizzotto, Chiara <1984>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: IUS/06 Diritto della navigazione

description: La tesi si propone l’obiettivo di riconoscere e analizzare l’attuale ruolo delle carte dei servizi di trasporto pubblico nel contesto dell’ordinamento italiano, quale strumento di tutela dei passeggeri.
Nella prima parte, viene analizzato il frammentario quadro normativo delle carte dei servizi pubblici, a partire dal d.P.C.M. del 27.01.1994, che rimane tutt’ora il principale riferimento normativo dell’istituto. Nella disamina del quadro normativo, viene posto in evidenza come, salvo per alcune specifiche modalità di trasporto, manchi attualmente una norma che imponga in modo esplicito e diretto l’adozione delle carte dei servizi da parte della generalità dei gestori dei servizi pubblici di trasporto, da cui si sviluppa una riflessione in ordine alla fonte dell’obbligo di adozione di tali carte da parte dei soggetti privati esercenti tale tipologia di servizi.
Nella seconda parte, viene analizzato il tema della natura giuridica delle carte dei servizi pubblici di trasporto.
Nella terza parte, è analizzato il ruolo attribuito alla neo-costituita Autorità dei Trasporti, di individuazione dei diritti minimi che debbono essere contenuti nelle carte dei servizi di trasporto pubblico. Lo studio analizza inoltre i possibili conflitti di competenze che possono sorgere in relazione ai poteri espressamente attribuiti all’Autorità dei Trasporti.
Infine, nella quarta e ultima parte, viene approfondito il tema degli strumenti di tutela apprestati in favore dei passeggeri dalle carte dei servizi, diversi e ulteriori rispetto agli ordinari strumenti già contemplati dall’ordinamento italiano. Con riferimento alla suddetta tematica, vengono esaminati sia gli strumenti di tutela extra-giudiziale, tra cui le procedure di reclamo e gli indennizzi automatici forfettari, sia la tutela giurisdizionale, con un approfondendimento sullo strumento del ricorso per l’efficienza amministrativa introdotto col il D.Lgs. n. 198/2009.
description: The dissertation aims at providing the actual and potential role of the Italian "Transport services charter", related to passenger rights.
Пробиотик в рационе свиней
Creators: name: Мурашов А.Г.
name: Ермолова Е.М.
name: Ермолов С.М.
Publisher: name: Эффективное животноводство
Year: 2021
Subjects: свиноматки
кормовая добавка
пробиотик
живая масса
среднесуточный прирост
воспроизводительные
sows
feed additive
probiotic
live weight
average daily gain
reproductive functions.

description: В статье представлены результаты исследований по применению в составе рациона свиноматок пробиотического препарата «Бифидум Баг». Исследования проведены в условиях ООО «Агрофирма Ариант» на помесном поголовье свиней. Целью исследований послужило изучение эффективности влияния пробиотического препарата «Бифидум Баг» на воспроизводительную функцию свиноматок и продуктивные качества поросят.
description: The article presents the results of studies on the use of the probiotic preparation “Bifidum Bag” in the diet of sows. The studies were carried out in the conditions of OOO “Agrofirma Ariant” on a crossbred livestock of pigs. The aim of the research was to study the effectiveness of the influence of the probiotic preparation “Bifidum Bag” on the reproductive function of sows and the productive qualities of piglets.
Fluid Dynamics as Diagnostic Tool for Heavy Ion Collisions
Creators: name: Baeuchle, Bjoern
name: Cheng, Yun
name: Csernai, Laszlo P.
name: Magas, Volodymyr K.
name: Strottman, Daniel D.
name: Van, Peter
name: Zetenyi, Miklos
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Ultra-Relativistic Heavy Ion Collisions at an energy $\sqrt{s_{NN}} = 65 {\rm GeV}$ are studied in a three-dimensional Fluid Dynamical model. The results of a hydrodynamical evolution using the PIC-method are shown. The importance and diagnostic value of a proper reaction plane determination is emphasized, and the time development of collective measurables is presented.
description: 5 pages, 5 figures, conference contribution
Linking rural tourism to agriculture. Evidences from comparative case studies in Kosovo, Italy and Spain
Creators: name: Arenliu, Arlinda <1975>
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2015
Subjects: AGR/01 Economia ed estimo rurale

description: Rural tourism has been widely promoted in the European Union as an effective measure counteracting economic and social challenges facing rural areas especially those with declining agriculture economies. Particularly its role is seen in provision and maintenance of public goods which are more and more demanded by the public and considered in the policymaking. 
In Kosovo, rural tourism has been developed through the support of the international organizations and private sector initiatives, with primary aim to generate additional income for rural households and sustainable management of natural and cultural resources. Anyhow, it could be stated that the use of territorial capital to enhance the quality of the tourist offer and undertake promotion at wider circles of people has not been well explored so far, particularly possible links with agriculture that would satisfy visitors demand. 
In this regard this research study analyzes involvement of local stakeholders and use of territorial capital to develop tourist offer in rural areas of Kosovo. Beside, study applies comparative approach with other two areas of the European Union, Appennino Bolognese in Italy and Alpujara in Spain, to understand and compare the process of rural tourism development and demand characteristics between Kosovo and these areas. A survey has been conducted in all three study areas with rural tourism visitors to understand their preferences for public and private goods and services when visiting rural areas and the role of agriculture in sustaining rural tourism. 
Results show that there is a potential to link rural tourism with agriculture in Kosovo, which would help in sustaining agriculture and add additional value to local food products, which in return would enhance the tourist offer and make it more attractive for the visitors but also for the farmers as an additional revenue generating sector.
Search for Compact Extragalactic Radio Sources Near Massive Star Forming Regions
Creators: name: Xu, Y.
name: Reid, M. J.
name: Menten, K. M.
name: Zheng, X. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the Very Large Array to search for compact milliarcsecond-size radio sources near methanol masers in high-mass star-forming regions. Such sources are required for Very Long Baseline Interferometry phase-referencing observations. We conducted pointed observations of 234 compact sources found in the NVSS survey and find 92 sources with unresolved components and synchrotron spectral indexes. These sources are likely the cores of AGNs and, thus, good candidates for astrometric calibrators.
description: 23 pages, lots of figures, accepted in ApJS
Fermion resonance in quantum field theory
Creators: name: Gonchar, M. O.
name: Kaloshin, A. E.
name: Lomov, V. P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We derive accurately the fermion resonance propagator by means of Dyson summation of the self-energy contribution. It turns out that the relativistic fermion resonance differs essentially from its boson analog.
description: 8 pages, 2 figures, revtex4 class; references added, style corrections
Οργάνωση και Διαχείριση των ταξί στην Ελλάδα και στο εξωτερικό
Creators: name: Καλφάκη, Αικατερίνη Θεοφάνη
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: ταξί
απελευθέρωση
διαχείριση
taxi
deregulation
management

description: Τα ταξί αποτελούν ένα μοναδικό μέσο μεταφοράς, το οποίο εξυπηρετεί από έναν μόνο επιβάτη μέχρι και ένα συγκεκριμένο αριθμό επιβατών. Οι υπηρεσίες των ταξί λειτουργούν περισσότερο σε τοπικό και περιφερειακό επίπεδο, λαμβανομένου υπ’ όψιν των διαθέσιμων εναλλακτικών λύσεων για μακρινά ταξίδια όπως είναι τα λεωφορεία και τα τρένα. Στις πιο ανεπτυγμένες χώρες, τα ταξί έχουν την τάση να χρησιμοποιούνται ως υποκατάστατο των ιδιωτικών οχημάτων. Βέβαια τα τελευταία χρόνια με την βελτιώσεις των υπόλοιπων μέσων μαζικής μεταφοράς και τη στρατηγική για ενίσχυση της χρήσης δημοσίων μέσων μεταφοράς, οι υπηρεσίες ταξί φαίνεται να υστερούν σε σχέση με τα υπόλοιπα μέσα. Ο τρόπος με τον οποίο τα ταξί ρυθμίζονται και λειτουργούν, αποτελεί βασικό παράγοντα της αποτελεσματικότητας των υπηρεσιών που παρέχονται. Η κατανόηση της ρύθμισης και της οργάνωσης του συστήματος, μπορεί να εντοπίσει τα προβλήματα και τα σημεία στα οποία υστερούν τα ταξί σε κάθε χώρα, ώστε να βελτιωθούν και να αναβαθμιστεί η ποιότητα των υπηρεσιών που παρέχουν. Στόχο της παρούσας Διπλωματικής Εργασίας αποτελεί η ανασκόπηση των πολιτικών που εφαρμόζονται σε διάφορες χώρες και η επιρροή τους στο σύστημα των ταξί με βάση τους δείκτες απόδοσης. Εντοπίστηκαν οι κατάλληλοι δείκτες ώστε να χαρακτηρίσουν οικονομικά, κοινωνικά αλλά και ποιοτικά το σύστημα αυτό, ενώ στο τέλος παρουσιάζονται τα συμπεράσματα και οι προτάσεις ορισμένων μεσοπρόθεσμων και μακροπρόθεσμων μέτρων.
description: Taxis consist a unique mode of transport, which serve from a single passenger up to a certain number of passengers. Taxi services usually operate at local and regional level, taking into account the available options for long trips such as buses and trains. In most developed countries, taxis tend to be used as a substitute for private vehicles. Certainly in recent years with the improvements of public transport and the strategy for enhancing the use of public transport, taxi services seem to lag behind the other means of transport. The way in which taxis are regulated and operate is a key factor in the effectiveness of services provided. Understanding the regulation and organization of the system can lead to the identification of problems and areas where taxis lag in each country in order to improve and upgrade the quality of services provided. The aim of this Thesis is to provide a review of policies in different countries and to present their impact on the system of taxis based on the performance indicators. Appropriate indicators are identified in order to describe the system in economic, social and qualitative terms while at the end the conclusions are presented and some short and long term measures are proposed.
Dual-Level Approach to Instanton Theory
Creators: name: Meisner, Jan
name: Kästner, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Instanton theory is an established method to calculate rate constants of chemical reactions including atom tunneling. Technical and methodological improvements increased its applicability. Still, a large number of energy and gradient calculations is necessary to optimize the instanton tunneling path and 2$^{\text{nd}}$ derivatives of the potential energy along the tunneling path have to be evaluated, restricting the range of suitable electronic structure methods. To enhance the applicability of instanton theory, we present a dual-level approach in which instanton optimizations and Hessian calculations are performed using an efficient but approximate electronic structure method and the potential energy along the tunneling path is recalculated using a more accurate method. This procedure extends the applicability of instanton theory to high-level electronic structure methods for which analytic gradients may not be available, like local linear-scaling approaches. We demonstrate for the analytical Eckart barrier and three molecular systems how the dual-level instanton approach corrects for the largest part of the error caused by the inaccuracy of the efficient electronic structure method. This reduces the error of the calculated rate constants significantly.
Ταυτοποίηση χρωστικών σε ειδώλια που βρέθηκαν κατά τις ανασκαφές του ΜΕΤΡΟ Θεσσαλονίκης
Creators: name: Φωστηρίδου, Αννα Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2012
Subjects: Ειδώλια
Χρωστικές
Επιστήμη της Συντήρησης
Figurines
Pigments
Conservation Science

description: Το θέμα της παρούσας μελέτης είναι η ταυτοποίηση ανόργανων και οργανικών χρωστικών υλών που βρέθηκαν σε 32 ειδώλια και 1 πτηνόσχημο μυροδοχείο, τα οποία χρονολογούνται από τα ελληνιστικά έως και τα ρωμαϊκά χρόνια και αποτελούν κτερίσματα τεσσάρων τάφων του ανατολικού και δυτικού νεκροταφείου της Θεσσαλονίκης. Το υλικό αυτό βρέθηκε κατά τη διάρκεια των ανασκαφών του Μετρό Θεσσαλονίκης. Αρχικά, πραγματοποιήθηκε η μελέτη όλων των δειγμάτων με πολωτικό πετρογραφικό μικροσκόπιο, που μας έδωσε μία πρώτη ένδειξη της ταυτότητας των υλικών, ενώ στη συνέχεια με τη χρήση της τεχνικής micro-Raman και της Υγρής Xρωματογραφίας Υψηλής Απόδοσης (HPLC) επιτεύχθηκε η ταυτοποίηση των ανόργανων και οργανικών χρωστικών αντίστοιχα. Συμπληρωματικά, χρησιμοποιήθηκε και η τεχνική της φασματοσκοπίας Φθορισμού Ακτίνων Χ (XRF) για την επιβεβαίωση των αποτελεσμάτων της φασματοσκοπίας Raman, αλλά πολύ περισσότερο για την ταυτοποίηση ανόργανων χρωστικών, σε περιπτώσεις που η τεχνική Raman δεν οδηγούσε σε ασφαλή συμπεράσματα λόγω φωταύγειας. Κατά την εξέταση των δειγμάτων της παρούσας μελέτης, ταυτοποιήθηκαν αιματίτης, κιννάβαρη, αιγυπτιακό μπλε, γκαιτίτης, ασβεστίτης και μαύρο του άνθρακα από τις ανόργανες χρωστικές και ριζάρι και αρμενικός κόκκος (Porphyrophora hameli Brandt) από τις οργανικές χρωστικές.
description: The subject of the present report is the identification of the inorganic and organic pigments found in 32 figurines and 1 bird figured unguentarium, dating back to the Hellenistic and Roman times. These archaeological finds are burial offerings of four graves, located at the eastern and western cemetery of Thessaloniki. They were found during excavations of the Thessaloniki Metro. The samples were all studied under polarizing petrographic microscope, which gave a first indication about the identity of the material. Afterwards, using the micro-Raman technique and High Performance Liquid Chromatography (HPLC), the inorganic and organic pigments were identified. Additionally, X-Ray Fluorescence Spectroscopy (XRF) was used to confirm the results of Raman spectroscopy, while moreover to identify inorganic pigments in cases where the Raman technique did not lead to reliable conclusions due to luminescence. In conclusion, the examination of the samples, in this report, led to the identification of hematite, cinnabar, egyptian blue, goethite, calcite and black carbon (inorganic pigments) and madder and armeniac conhineal (organic pigments).
Spin entanglement using coherent light and cavity-QED
Creators: name: Grond, J.
name: Pötz, W.
name: Imamoglu, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A scheme for probabilistic entanglement generation between two distant single electron doped quantum dots, each placed in a high-Q microcavity, by detecting strong coherent light which has interacted dispersively with both subsystems and experienced Faraday rotation due to the spin selective trion transitions is discussed. In order to assess the applicability of the scheme for distant entanglement generation between atomic qubits proposed by T.D. Ladd et al. [New J. Phys. 8, 184 (2006)] to two distant quantum dots, one needs to understand the limitations imposed by hyperfine interactions of the quantum dot spin with the nuclear spins of the material and by non-identical quantum dots. Feasibility is displayed by calculating the fidelity for Bell state generation analytically within an approximate framework. The fidelity is evaluated for a wide range of parameters and different pulse lengths, yielding a trade-off between signal and decoherence, as well as a set of optimal parameters. Strategies to overcome the effect of non-identical quantum dots on the fidelity are examined and the timescales imposed by the nuclear spins are discussed, showing that efficient entanglement generation is possible with distant quantum dots. In this context, effects due to light hole transitions become important and have to be included. The scheme is discussed for one- as well as for two-sided cavities, where one must be careful with reflected light which carries spin information. The validity of the approximate method is checked by a more elaborate semiclassical simulation which includes trion formation.
description: 17 pages, 13 figures, typos corrected, reference updated