cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μαθηματιτκή Μελέτη και Υλοποίηση Ultra-Light Weight Κρυπτογράφησης
Creators: name: Σιδηρόπουλος, Κυριάκος Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Κρυπτογραφία
Ψηφιακή Σχεδίαση
Μαθηματικη Ανάλυση
Cryptography
Digital Design
Mathematical Study

description: Στην παρούσα εργασία θα γίνει μελέτη του Κρυπτογραφικού Αλγορίθμου Hummingbird. Ο Hummingbird ανήκει στην κατηγορία των Ultra-Lightweight Κρυπτογραφικών Αλγορίθμων, στοχεύοντας να γίνει χρήση του σε συσκευές με περιορισμένους πόρους. Εξαιτίας του χαμηλού κόστους που απαιτείται σε συσκευές όπως τα RFIDtags, τα SmartCards ή ακόμα και τους WirelessSensors δημιουργήθηκε η ανάγκη να βρεθεί ένας Κρυπτογραφικός Αλγόριθμος που θα παρέχει την ζητούμενη ασφάλεια χωρίς όμως να επιβαρύνει το σύστημα. Βασιζόμενος στον τρόπο λειτουργίας της μηχανής Enigma σε μεγάλο βαθμό δημιουργήθηκε ο Αλγόριθμος Hummingbird. Ο Αλγόριθμος Hummingbird μπορεί να παρέχει την ζητούμενη ασφάλεια κάνοντας χρήση μικρών BlockSize ενώ ταυτόχρονα είναι ανθεκτικός στις πιο πολλές κοινές επιθέσεις. Το αξιοσημείωτο είναι μπορεί να συνδυάσει την οικονομία,την ασφάλεια και τις επιδόσεις. Σε σύκριση με πολλούς άλλους Ultra-Lightweight Κρυπτογραφικούς Αλγορίθμους η υλοποίηση του είναι πιο γρήγορη και πιο οικομική σε επίπεδο chip. Αυτός είναι και ο λόγος ο οποίος τον καθιστά έναν από τους καλύτερους Ultra-Lightweight Αλγορίθμους που μπορούν να χρησιμοποιηθούν σε Hardware επίπεδο.
description: Hummingbird is an Ultra-Lightweight Cryptographic Algorithm. It is a hybrid Algorithm, it is a combine of Block Cipher and Stream Cipher and it is motivated by Enigma Machine. Resource-constrained devices such as RFID tags, wireless sensors and Smart Cards made desirable the creation and the employment of Light Weight and specialized cryptographic primitives. Hummingbird is an Algorithm which can combine cost, security and efficiency. Hummingbird is resistant to most common attacks to Block and Stream Ciphers as well. Finally, Hummingbird compared to other Cryptographic Algorithms can achieve faster throughput in smaller size implementation.
A phase diagram for light-induced superconductivity in $κ$-(ET)$_2$-X
Creators: name: Buzzi, M.
name: Nicoletti, D.
name: Fava, S.
name: Jotzu, G.
name: Miyagawa, K.
name: Kanoda, K.
name: Henderson, A.
name: Siegrist, T.
name: Schlueter, J. A.
name: Nam, M. -S.
name: Ardavan, A.
name: Cavalleri, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Resonant optical excitation of certain molecular vibrations in $κ$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br has been shown to induce transient superconducting-like optical properties at temperatures far above equilibrium $T_c$. Here, we report experiments across the bandwidth-tuned phase diagram of this class of materials, and study the Mott insulator $κ$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Cl and the metallic compound $κ$-(BEDT-TTF)$_2$Cu(NCS)$_2$. We find non-equilibrium photoinduced superconductivity only in $κ$-(BEDT-TTF)$_2$Cu[N(CN)$_2$]Br, indicating that the proximity to the Mott insulating phase and possibly the presence of preexisting superconducting fluctuations are pre-requisites for this effect.
description: 14 pages, 4 figures
Radial sensitivity of kaonic atoms and strongly bound $\bar K$ states
Creators: name: Barnea, N.
name: Friedman, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The strength of the low energy K^- nucleus real potential has recently received renewed attention in view of experimental evidence for the possible existence of strongly bound K^- states. Previous fits to kaonic atom data led to either 'shallow' or to 'deep' potentials, where only the former are in agreement with chiral approaches but only the latter can produce strongly bound states. Here we explore the uncertainties of the K^- nucleus optical potentials, obtained from fits to kaonic atom data, using the functional derivatives of the best-fit chi^2 values with respect to the potential. We find that only the deep type of potential provides information which is applicable to the K^- interaction in the nuclear interior.
description: 4 pages, 4 figures minor additions, PRC Rapid Communication (in press)
Schwinger Pair Production in dS_2 and AdS_2
Creators: name: Kim, Sang Pyo
name: Page, Don N.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study Schwinger pair production in scalar QED from a uniform electric field in dS_2 with scalar curvature R_{dS} = 2 H^2 and in AdS_2 with R_{AdS} = - 2 K^2. With suitable boundary conditions, we find that the pair-production rate is the same analytic function of the scalar curvature in both cases.
description: RevTex 6 pages, no figure; replaced by the version published in PRD
The politics of financial sector reform
Creators: name: Yakabuski, Konrad
Publisher: name: University of British Columbia
Year: 2008

description: This thesis presents a detailed case analysis of the evolution of regulatory policy in the financial sector in Canada between 1981 and 1991. The thesis adopts both normative and positive analyses of the issue to determine whether economic or political factors were more important in shaping policy outcomes in the sector. While both played a role, the author concludes the political dynamics of the policy-making process were far more influential than the application of objective economic norms. Yet, a positive analysis alone is insufficient in explaining policy outcomes in the financial sector. Exogenous events, the length time involved in formulating and implementing policy changes and the impact of overlapping federal-provincial jurisdiction in the sector further frustrated attempts to engineer policy changes.
Vibrational CARS measurements in a near-atmospheric pressure plasma jet in nitrogen: I. Measurement procedure and results
Creators: name: Kuhfeld, Jan
name: Lepikhin, Nikita
name: Luggenhölscher, Dirk
name: Czarnetzki, Uwe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The non-equilibrium ro-vibrational distribution functions of molecules in a plasma can heavily influence the discharge operation and the plasma-chemistry. A convenient method for measuring the distribution function is by means of coherent anti-Stokes Raman scattering (CARS). CARS spectra are measured in a ns-pulsed plasma between two parallel, 1 mm spaced molybdenum electrodes in nitrogen at 200 mbar with pulse durations of 200 ns / 250 ns and a repetition rate of 1 kHz. The CARS spectra are analyzed by a fitting routine to extract information about the vibrational excitation of the nitrogen molecules in the plasma. It is found that during the discharge the vibrational distribution for $v \lesssim 7$ can be described by a vibrational two-temperature distribution function. Additionally, the electric field is measured by the E-FISH method during the discharge pulse. It is found to be constant in time after the initial ionization wave with values close to 81 Td for the investigated conditions. During the afterglow between two discharge pulses a more general fitting approach is used to obtain the population differences of two neighboring vibrational states. This allows to capture the more complex vibrational dynamics in that time period. The measurement results are discussed in more detail and compared to simple models in a companion paper.
Fake News Detection: a comparison between available Deep Learning techniques in vector space
Creators: name: Singh, Lovedeep
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Fake News Detection is an essential problem in the field of Natural Language Processing. The benefits of an effective solution in this area are manifold for the goodwill of society. On a surface level, it broadly matches with the general problem of text classification. Researchers have proposed various approaches to tackle fake news using simple as well as some complex techniques. In this paper, we try to make a comparison between the present Deep Learning techniques by representing the news instances in some vector space using a combination of common mathematical operations with available vector space representations. We do a number of experiments using various combinations and permutations. Finally, we conclude with a sound analysis of the results and evaluate the reasons for such results.
description: for citiation purpose, use details available on official IEEE Xplore page: https://doi.org/10.1109/CICT51604.2020.9312099
Blocks of cyclotomic Hecke algebras
Creators: name: Lyle, Sinead
name: Mathas, Andrew
Publisher: name: arXiv
Year: 2006
Subjects: subject: Representation Theory (math.RT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 20C08, 20C30, 05E10

description: This paper classifies the blocks of the cyclotomic Hecke algebras of type G(r,1,n) over an arbitrary field. Rather than working with the Hecke algebras directly we work instead with the cyclotomic Schur algebras. The advantage of these algebras is that the cyclotomic Jantzen sum formula gives an easy combinatorial characterization of the blocks of the cyclotomic Schur algebras. We obtain an explicit description of the blocks by analyzing the combinatorics of `Jantzen equivalence'. We remark that a proof of the classification of the blocks of the cyclotomic Hecke algebras was announced in 1999. Unfortunately, Cox has discovered that this previous proof is incomplete.
description: Final version. To appear in Advances in Mathematics
Άσκηση προσομοίωσης ακραίων καταστάσεων κεφαλαιακής επάρκειας ευρωπαϊκών τραπεζών
Creators: name: Σταυρουλάκης, Σταύρος Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Άσκηση προσομοίωσης ακραίων καταστάσεων
Ευρωπαϊκά Τραπεζικά ιδρύματα
Κεφαλαιακή επάρκεια
Exercise stress testing
European banking institutions
Capital adequacy

description: Στην εργασία αυτή παρουσιάζεται η ανάπτυξη μοντέλων stress test για τις πέντε πιο ανεπτυγμένες οικονομίες της Ευρωπαϊκής Ένωσης: Γερμανία, Αγγλία, Γαλλία, Ιταλία και Ισπανία. Η επιλογή αυτών των χωρών έγινε διότι αποτελούν τα πιο ισχυρά χρηματοπιστωτικά συστήματα και ως εκ τούτου η εύρυθμη λειτουργία τους καθορίζει σε έναν πολύ μεγάλο βαθμό και την ευρωπαϊκή χρηματοπιστωτική σταθερότητα. Η εμπειρική έρευνα που εφαρμόστηκε χωρίζεται σε 2 μέρη: αρχικά ορίστηκαν οι προσδιοριστικοί παράγοντες του δείκτη κεφαλαιακής επάρκειας. Σημειώνεται ότι ο δείκτης κεφαλαιακής επάρκειας επιλέγει με βάση την πληρότητα που υπήρχε στα δεδομένα. Ακολούθως και αφού τα δεδομένα αυτά πήραν μορφή panel (χρονικώς επαναλαμβανόμενα διαστρωματικά στοιχεία) εφαρμόστηκε οικονομετρική ανάλυση για να προσδιοριστούν οι μεταβλητές που επηρεάζουν τον δείκτη κεφαλαιακής επάρκειας. Το δεύτερο μέρος της εμπειρικής έρευνας αποτελείται από τον σχεδιασμό και την εφαρμογή stress test για να αξιολογηθεί η κεφαλαιακή επάρκεια των ευρωπαϊκών τραπεζικών συστημάτων σε ακραία υποθετικά σενάρια.
description: This paper presents the development of stress test for the five most developed economies in the European Union: Germany, England, France, Italy and Spain. These countries were selected because they have the most powerful financial systems and their satisfactory level of functioning determines to a very large extent the European financial stability. The empirical research was divided into 2 parts: Initially the determinants of capital adequacy ratio were set. It should be noted that the capital adequacy ratio was selected based on the completeness of the data. Subsequently these data were panel formatted and then econometric analysis was applied to identify the variables that affect the capital adequacy ratio. The second part of this project consist of the scheduling and applying stress test to evaluate the capital adequacy of European banking systems in extreme hypothetical scenarios.
SLP Involvement in MTSS (McKenna et al., 2021)
Creators: name: McKenna, Meaghan
name: Castillo, Jose
name: Dedrick, Robert F.
name: Cheng, Ke
name: Goldstein, Howard
Publisher: name: ASHA journals
Year: 2021
Subjects: subject: Language
subject: 170204 Linguistic Processes (incl. Speech Production and Comprehension)
subject: FOS: Psychology

description: Purpose: This article describes the development and initial validation of the Speech-Language Pathologist (SLP) Involvement in Multi-Tiered System of Supports (MTSS) Questionnaire. It was developed to measure the extent to which SLPs are involved in MTSS at their school site(s).Method: A total of 567 SLPs practicing in the United States responded to up to 39 Likert-type items meant to reflect six domains: scope of practice, professional development, leadership, consulting/collaborating, assessment and analysis, and intervention. Measurement quality was evaluated in terms of score reliability and validity. An exploratory factor analysis was conducted to evaluate the internal structure of the questionnaire responses. A three-factor model with the following dimensions of Carrying out Roles and Responsibilities, Leading, and Planning and Providing Interventions was supported. Loadings for retained factors ranged from .35 to .87. Internal consistency estimates ranged from .87 to .92. Descriptive statistics summarized the overall involvement of SLPs in MTSS, and responses to questions to assess the feasibility and acceptability of this questionnaire were analyzed.Results: Questionnaire responses indicated that SLPs infrequently engage in MTSS activities. The item with the highest mean was related to SLPs collaborating with teachers to help them address students’ speech and language disorders in their classrooms. Most of the SLPs who took the questionnaire found it easy to complete, but only some found the information to be useful.Conclusions: The infrequent involvement of SLPs in MTSS indicates a need to disseminate information on the potentially valuable roles SLPs can play in MTSS implementation. This tool may be used by SLPs to better understand contributions they can make within an MTSS framework and self-reflect on their current levels of involvement.
Supplemental Material S1. SLP Involvement in MTSS Questionnaire.
McKenna, M., Castillo, J., Dedrick, R. F., Cheng, K., & Goldstein, H. (2021). Speech-Language Pathologist Involvement in Multi-Tiered System of Supports Questionnaire: Advances in interprofessional practice. Language, Speech, and Hearing Services in Schools. Advance online publication. https://doi.org/10.1044/2020_LSHSS-20-00084
Ethical Intent Statement for the Licensing of XChronos and RNA.pdf
Creators: name: Souza Silva, Jaconaazar
Publisher: name: Zenodo
Year: 2025
Subjects: Ethical licensing
Symbolic AI
Ontological design
RNA-XC
XChronos
Chronons
Subjective time
Philosophical technology
Consciousness architecture
Open-source ethics
ψ(t) function
ELAS equation
Symbolic neural networks
Creative commons and ontology
Technological phenomenology

description: This ethical intent declaration outlines the foundational principles governing the use, licensing, and symbolic integrity of the XChronos project and its derivatives — including RNA-XC, Chronons, Hexachronons, Metachronos, ELAS(t), and the function ψ(t). Designed not merely as a computational system but as a philosophical and educational architecture, XChronos redefines time as lived experience rather than measured duration. This document formalizes non-negotiable ethical clauses for future partnerships, including respect for the project's nomenclature, moral authorship, ontological alignment, and prohibition of military or manipulative applications.

It stands as a public testament of the author's intention to protect the symbolic coherence, spiritual purpose, and educational openness of the project — ensuring that any future integrations preserve its humanistic roots and metaphysical depth.
Substructure in lensing clusters and simulations
Creators: name: Natarajan, Priyamvada
name: De Lucia, Gabriella
name: Springel, Volker
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present high-resolution mass reconstructions for five massive cluster-lenses spanning a redshift range from $z = 0.18$--0.57 utilising archival {\it Hubble Space Telescope} ({\it HST}) data and applying galaxy-galaxy lensing techniques. These detailed mass models were obtained from the observations by combining constraints from the strong and weak lensing regimes. We ascribe local weak distortions in the shear maps to perturbations induced by the presence of galaxy haloes around individual bright early-type cluster member galaxies. This technique constrains the mass enclosed within an aperture for these subhaloes. We are sensitive to a specific mass range for these subhaloes, $10^{11}$ -- $10^{12.5} \msun$, which we associate with galaxy-scale subhaloes. Adopting a parametric model for the subhaloes, we also derive their velocity dispersion function and the aperture radius function. The mass spectrum of substructure in the inner regions of the observed clusters is directly compared with that in simulated clusters extracted from the {\it Millennium Simulation}. The massfunction, aperture radii and velocity dispersion function are compared in detail. Overall, we find good agreement between the distribution of substructure properties retrieved using the lensing analysis and those obtained from the simulation (truncated abstract).
description: 15 pages, 5 figures, 2 tables, in press MNRAS
Phonoritons in a monolayer hBN optical cavity
Creators: name: Latini, Simone
name: De Giovannini, Umberto
name: Sie, Edbert J.
name: Gedik, Nuh
name: Hübener, Hannes
name: Rubio, Angel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: A phonoriton is an elementary excitation that is predicted to emerge from hybridization between exciton, phonon and photon. Besides the intriguing many-particle structure, phonoritons are of interest as they could serve as functional nodes in devices that utilize electronic, phononic and photonic elements for energy conversion and thermal transport applications. Although phonoritons are predicted to emerge in an excitonic medium under intense electromagnetic wave irradiation, the stringent condition for their existence has eluded direct observation in solids. In particular, on-resonance, intense pumping scheme has been proposed but excessive photoexcitation of carriers prevents optical detection. Here we theoretically predict the appearance of phonoritonic features in monolayer hexagonal boron nitride (hBN) embedded in an optical cavity. The coherent superposition nature of phonoriton states is evidenced by the hybridization of exciton-polariton branches with phonon replicas that is tunable by the cavity-matter coupling strength. This finding simultaneously provides an experimental pathway to observe the predicted phonoritons and opens a new avenue for tuning materials properties.
Πολυφασματική βαθυμετρία με χρήση δορυφορικής εικόνας worldview-2
Creators: name: Πέκαλης, Δημήτριος Μερκούριου
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πολυφασματική Βαθυμετρία
Βυθομέτρηση
Ισοβαθείς
Multispectral bathymetry
WorldView-2
Lyzenga

description: Μέσα από την παρούσα εργασία έγινε μία προσπάθεια μελέτης και αξιολόγησης της μέτρησης του βάθους του ρηχών θαλάσσιων νερών με τη χρήση πολυφασματικής εικόνας από το δορυφόρο WorldView-2. Η περιοχή μελέτης ήταν στη διώρυγα της Ν. Ποτίδαιας του Νομού Χαλκιδικής. Για την περιοχή αυτή πραγματοποιήθηκαν επίγειες μετρήσεις για την λήψη φωτοσταθερών σημείων για τη γεωαναφορά της δορυφορικής εικόνας, καθώς και αποτύπωση του θαλάσσιου πυθμένα, με το συνδυασμό ηχοβολισμού και ενός GNSS για την ταυτόχρονη αποτύπωση της οριζόντιας θέσης και του βάθους του πυθμένα. Για τη μελέτη χρησιμοποιήθηκαν το πολυφασματικό βυθομετρικό μοντέλο Lyzenga, o αλγόριθμος Stumpf -Holderied - Sinclair και η μέθοδος της μη επιβλεπόμενης ταξινόμησης. Οι βαθμονομήσεις των μοντέλων έγιναν με τη χρήση σημείων εκπαίδευσης της ηχοβόλισης και η αξιολόγηση τους έγινε με πρόβλεψη βαθών σε σημεία με γνωστό βάθος από την ηχοβόλιση τα οποία ήταν διαφορετικά από αυτά που χρησιμοποιήθηκαν στην βαθμονόμηση του κάθε μοντέλου. Τέλος δημιουργήθηκαν ισοβαθείς χάρτες για κάθε μέθοδο καθώς και μία μηκοτομή του βυθού που παρουσιάζει ταυτόχρονα και τις τρείς μεθόδους μαζί με την ηχοβόλιση.
description: Through this thesis, an effort was made to study and evaluate the measurement of the depths at shallow marine waters using multispectral image from the WorldView-2 satellite. The study area was in Canal N. Potidea of Halkidiki. For the same area were made ground measurements to obtain control points for georeferencing of satellite imagery. Seabed maped, with the combination of echo sounder and GNSS for the simultaneous capture of the horizontal position and the bottom depth. Furthermore, multispectral bathymetry was obtained implied Lyzenga model as Stumpf – Holderied - Sinclair algorithms. In addition unsupervised classification method was applied. The calibration models were supported by known echo sounding points and were tested for depth prediction at known sounding positions not used in the calibration procedure. Finally, depth contour maps and seabed profiles were derived showing simultaneously showing simultaneously the final product of three methods together with the echo sounding.
On the Possibility of Quantum Gravity Effects at Astrophysical Scales
Creators: name: Reuter, M.
name: Weyer, H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The nonperturbative renormalization group flow of Quantum Einstein Gravity (QEG) is reviewed. It is argued that at large distances there could be strong renormalization effects, including a scale dependence of Newton's constant, which mimic the presence of dark matter at galactic and cosmological scales.
description: LaTeX, 18 pages, 4 figures. Invited contribution to the Int. J. Mod. Phys. D special issue on dark matter and dark energy
BUBLS : a mixed integer program for transit centre location in the Lower Mainland
Creators: name: Willoughby, Keith Allan
Publisher: name: University of British Columbia
Year: 2008

description: A mixed integer optimization model is developed to determine both the optimal location of transit centres to serve BC Transit's Lower Mainland route network and the optimal allocation of buses to those centres. The existing five transit centres are explored as well as five candidate facilities. The model considers nonrevenue transportation cost (deadhead), capital cost of constructing candidate transit centres and the salvage values of existing centres. A linear regression is generated to produce the travel times from the terminus of a route to potential transit centre locations. The optimal solution is determined, resulting in potential annual savings of over $560,000 compared to the current location-allocation strategy. Various experiments are performed to examine the sensitivity of model parameters and to determine the effect of different planning scenarios. The effect of the optimal solution on driver relief is considered. Conclusions as well as directions for further research are offered.
Comments on Thermodiffusion: The physico-chemical mechanics view. J. Chem. Phys. 154, 024112 (2021)
Creators: name: Liu, Zi-Kui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In a series of publications, Kocherginsky and Gruebele presented a systematic framework for chemical transport and thermodiffusion to predict the Soret coefficients from thermodynamics. A macroscopic derivation of the Onsager reciprocal relations without recourse to microscopic fluctuations or equations of motion was also discussed. Their important contributions and some confusions are discussed.
Anisotropic magnetic properties of CeAg$_2$Ge$_2$ single crystal
Creators: name: Thamizhavel, A.
name: Kulkarni, R.
name: Dhar, S. K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In order to investigate the anisotropic magnetic properties of CeAg$_2$Ge$_2$, we have successfully grown the single crystals, for the first time, by high temperature solution growth (flux) method. We have performed a detailed study of the grown single crystals by measuring their electrical resistivity, magnetic susceptibility, magnetization, specific heat and magnetoresistance. A clear anisotropy and an antiferromagnetic transition at $T_{\rm N}$ = 4.6 K have been observed in the magnetic properties. The magnetic entropy reaches $R$ ln 4 at 20 K indicating that the ground state and the first excited state are very closely spaced (a quasi-quartet state). From the specific heat measurements and crystalline electric field (CEF) analysis of the magnetic susceptibility, we have found the level splitting energies as 5 K and 130 K. The magnetization measurements reveal that the a-axis is the easy axis of magnetization and the saturation moment is $μ_{\rm s}$ = 1.6 $μ_{\rm B}$/Ce, corroborating the previous neutron diffraction measurements on a polycrystalline sample.
description: Submitted to Phys. Rev. B
Vibrational CARS measurements in a near-atmospheric pressure plasma jet in nitrogen: II. Analysis
Creators: name: Kuhfeld, Jan
name: Luggenhölscher, Dirk
name: Czarnetzki, Uwe
Publisher: name: arXiv
Year: 2021
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The understanding of the ro-vibrational dynamics in molecular (near)-atmospheric pressure plasmas is essential to investigate the influence of vibrational excited molecules on the discharge properties. In a companion paper, results of ro-vibrational coherent anti-Stokes Raman scattering (CARS) measurements for a nanosecond pulsed plasma jet consisting of two conducting molybdenum electrodes with a gap of 1 mm in nitrogen at 200 mbar are presented. Here, those results are discussed and compared to theoretical predictions based on rate coefficients for the relevant processes found in the literature. It is found, that during the discharge the measured vibrational excitation agrees well with predictions obtained from the rates for resonant electron collisions calculated by Laporta et al [PlasmaSources Science and Technology 23 065002 (2014)]. The predictions are based on the electric field during the discharge, measured by EFISH and the electron density which is deduced from the field and mobility data calculated with Bolsig+. In the afterglow a simple kinetic simulation for the vibrational subsystem of nitrogen is performed and it is found, that the populations of vibrational excited states develop according to vibrational-vibrational transfer on timescales of a few $μ$s, while the development on timescales of some hundred $μ$s is determined by the losses at the walls. No significant influence of electronically excited states on the populations of the vibrational states visible in the CARS measurements ($v \lesssim 7$) was observed.
Unifying the meaning of open and designing a new global open solutions policy framework
Creators: name: Hampson, Glenn L.
name: Kamerlin, L
name: Hanahoe, H
name: Graf, C
Publisher: name: Open Scholarship Initiative Proceedings
Year: 2021

description: Society’s pursuit of open information solutions is disjointed. These solutions—including but not limited to open access, open data, open source, open science, open government, and open educational resources—all have much in common, and yet we treat them as separate entities from a policy perspective. Is it possible to unite these solutions under a single open solutions policy framework? If so, what might this framework look like, what should our open goals be, and how can we “sell” this idea to the world
description: Open Scholarship Initiative Proceedings, 2021
Three Applications of Instanton Numbers
Creators: name: Gasparim, Elizabeth
name: Ontaneda, Pedro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 14D21; 14J60

description: We use instanton numbers to: (i) stratify moduli of vector bundles, (ii) calculate relative homology of moduli spaces and (iii) distinguish curve singularities.
description: To appear in Communications in Mathematical Physics
Theory of quantum fluctuations of optical dissipative structures and its application to the squeezing properties of bright cavity solitons
Creators: name: Perez-Arjona, Isabel
name: Roldan, Eugenio
name: de Valcarcel, German J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a method for the study of quantum fluctuations of dissipative structures forming in nonlinear optical cavities, which we illustrate in the case of a degenerate, type I optical parametric oscillator. The method consists in (i) taking into account explicitly, through a collective variable description, the drift of the dissipative structure caused by the quantum noise, and (ii) expanding the remaining -internal- fluctuations in the biorthonormal basis associated to the linear operator governing the evolution of fluctuations in the linearized Langevin equations. We obtain general expressions for the squeezing and intensity fluctuations spectra. Then we theoretically study the squeezing properties of a special dissipative structure, namely, the bright cavity soliton. After reviewing our previous result that in the linear approximation there is a perfectly squeezed mode irrespectively of the values of the system parameters, we consider squeezing at the bifurcation points, and the squeezing detection with a plane--wave local oscillator field, taking also into account the effect of the detector size on the level of detectable squeezing.
description: 10 figures
Γόρτυνα της Κρήτης: μια βυζαντινή πόλη εν τη γενέσει. Μετασχηματισμοί στην πολεοδομία και τη χρήση τού χώρου κατά τη μεταβατική περίοδο του Bυζαντίου (7ος-9ος αι.)
Creators: name: Τζημαγιώργη, Καλλιόπη Ζήση
Publisher: name: Aristotle University of Thessaloniki
Year: 2016
Subjects: Πόλη, πόλις
Γόρτυνα
7ος-9ος αιώνας
City
Gortyna
7th-9th centuries

description: Στόχος της παρούσας εργασίας, σε ένα πρώτο επίπεδο, είναι η αποτύπωση των μεταβολών στη δομή και τη λειτουργία της βυζαντινής πόλεως, ως οργανωμένης οικιστικής, διοικητικής και οικονομικής μονάδας με διαμορφωμένα από τον 6ο αιώνα χαρακτηριστικά, μεταβολών που παγιώνονται στην πρώτη βυζαντινή περίοδο, ωριμάζουν κατά τη μεταβατική και διαμορφώνουν τη φυσιογνωμία της κατ’ εξοχήν βυζαντινής πόλεως στη μέση και ύστερη. Σε ένα δεύτερο επίπεδο, θίγονται θεωρητικά ζητήματα που αφορούν την «παρακμή», την «ασυνέχεια» και τον «μετασχηματισμό» της βυζαντινής πόλεως. Ειδικότερα, εξετάζονται οι διεργασίες που επιφέρουν τροποποίηση στους όρους κατοίκησης και χρήσης του δημόσιου και ιδιωτικού χώρου κατά τον 7ο και 8ο αιώνα και, όπου είναι εφικτό, στην ίδια τη σύλληψη της πόλης ως έννοιας ενός ευρύτερου κοινωνικού-πολιτικού συστήματος με καθορισμένες δομές και λειτουργίες. Για την ορατή αποτύπωση αυτού του μετασχηματισμού στα αρχαιολογικά συμφραζόμενα, έχει επιλεγεί το παράδειγμα της Γόρτυνας στην Κρήτη, τόσο λόγω της θέσης και του ρόλου της στον γεωγραφικό, πολιτικό και εκκλησιαστικό χάρτη της περιοχής, όσο και λόγω της σημαντικής αρχαιολογικής και ιστορικής τεκμηρίωσης που έχει προσφέρει η μέχρι τώρα μελέτη της.
description: The present paper aims partly at identifying the alterations in both structure and function of the byzantine city as a composed residential, administrative and fiscal entity, its elements configurated in the 6th century; alterations that are established during the early, develop throughout the transitional (7th-9th c.) and forge the model byzantine city in the middle and late byzantine periods. By further analysis, theoretical issues regarding “decay”, “discontinuity” and “transformation” of the byzantine city are being addressed respectively, particularly the process leading to modifications in dwelling terms and in the use of public and private space during the 7th and 8th c., as well as the perception of the city as an image of a broader socio-economic system of designated arrangement and operation. For the purpose of producing a concrete portrayal of this transformation in terms of archaeological data, the ancient city of Gortyna, Crete has been selected due to its geographical location and administrative status, as well as the substantial archaeological and historical documentation that ongoing research has furnished up to now.
Asymptotic behaviour of the inductance coefficient for thin conductors
Creators: name: Touzani, Rachid
name: Amirat, Youcef
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B40 35Q60

description: We study the asymptotic behaviour of the inductance coefficient for a thin toroidal inductor whose thickness depends on a small parameter $\eps>0$. We give an explicit form of the singular part of the corresponding potential $u\ue$ which allows to construct the limit potential $u$ (as $\eps\to 0$) and an approximation of the inductance coefficient $L\ue$. We establish some estimates of the deviation $u\ue-u$ and of the error of approximation of the inductance. We show that $L\ue$ behaves asymptotically as $\ln\eps$, when $\eps\to 0$.
Fragility of non-convergence in preferential attachment graphs with three types
Creators: name: Andrews, Ben
name: Jordan, Jonathan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 05C82

description: Preferential attachment networks are a type of random network where new nodes are connected to existing ones at random, and are more likely to connect to those that already have many connections. We investigate further a family of models introduced by Antunović, Mossel and Rácz where each vertex in a preferential attachment graph is assigned a type, based on the types of its neighbours. Instances of this type of process where the proportions of each type present do not converge over time seem to be rare. Previous work found that a "rock-paper-scissors" setup where each new node's type was determined by a rock-paper-scissors contest between its two neighbours does not converge. Here, two cases similar to that are considered, one which is like the above but with an arbitrarily small chance of picking a random type and one where there are four neighbours which perform a knockout tournament to determine the new type. These two new setups, despite seeming very similar to the rock-paper-scissors model, do in fact converge, perhaps surprisingly.
description: 7 pages, 2 figures
EFICACIA DE LA CIRUGÍA BARIÁTRICA EN PACIENTES ADULTOS CON OBESIDAD E HIPERTENSIÓN ARTERIAL: UNA REVISIÓN SISTEMÁTICA DE REVISIONES SISTEMÁTICAS
Creators: name: Gutierrez, Wendy Nieto
Publisher: name: figshare
Year: 2021
Subjects: subject: 110107 Metabolic Medicine
subject: FOS: Clinical medicine

description: Umbrella review sobre la efectividad de la cirugía bariátrica en pacientes adultos con obesidad severa e hipertensión
An Analysis of the Expected Degradation of Silicon Detectors in the Future Ultra High Energy Facilities
Creators: name: Lazanu, Ionel
name: Lazanu, Sorina
Publisher: name: arXiv
Year: 2006
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this contribution we discuss how to prepare some possible detectors - only silicon option being considered, for the new era of HEP challenges because the bulk displacement damage in the detector, consequence of irradiation, produces effects at the device level that limit their long time utilisation, increasing the leakage current and the depletion potential, eventually up to breakdown, and thus affecting the lifetime of detector systems. Physical phenomena that conduce to the degradation of the detector are analysed both at the material and device levels, and some predictions of the time degradation of silicon detectors in the radiation environments expected in the LHC machine upgrade in luminosity and energy as SLHC or VLHC, or at ULHC are given. Possible effects at the detector level after high energy cosmic proton bombardment are investigated as well. Time dependences of these device parameters are studied in conditions of continuous irradiation and the technological options for detector materials are discussed, to obtain devices harder to radiation.
description: 9-th Conference on Astroparticle, Particle and Space Physics, Detectors and Medical Applications, Villa Olmo, Como 17-21 October 2005
Pulsating iron spectral features in the emission of X-ray pulsar V0332+53
Creators: name: Bykov, S. D.
name: Filippova, E. V.
name: Gilfanov, M. R.
name: Tsygankov, S. S.
name: Lutovinov, A. A.
name: Molkov, S. V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results of phase- and time-resolved study of iron spectral features in the emission of the Be/X-ray transient pulsar V0332+53, during its type II outburst in 2004 using archival RXTE/PCA data. Coherent pulsations of both fluorescent iron line at {\approx}6.4 keV and neutral iron K-edge at {\approx}7.1 keV have been detected throughout the entire outburst. The pulsating iron K-edge is reported for the first time for this object. Near the peak of the outburst, the 3-12 keV pulse profile shows two deep, F_max / F_min ~ 2, and narrow dips of nearly identical shape, separated by exactly Δϕ=0.5 in phase. The dip spectra are nearly identical to each other and very similar in shape to the spectra outside the dips. The iron K-edge peaks at the phase intervals corresponding to the dips, although its optical depth τ_K ~ 0.05 is by far insufficient to explain the dips. The iron line shows pulsations with a complex pulse profile without any obvious correlation with the total flux or optical depth of the K-edge. Accounting for the component associated with reprocessing of the pulsar emission by the surface of the donor star and circumstellar material, we find a very high pulsation amplitude of the iron line flux, F_max / F_min ~ 10. We demonstrate that these properties of V0332+53 can not be explained by contemporary emission models for accreting X-ray pulsars and speculate about the origin of the observed iron spectral features.
description: 16 pages, 6 figures. Monthly Notices of the Royal Astronomical Society Main Journal Accepted
Crystal Engineering and Coordination Polymers to Discover New Materials for Gases Storage
Creators: name: ALI CHAHINE
Publisher: name: Monash University
Year: 2021
Subjects: subject: Crystallography
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: The main theme of the thesis is to design new porous-crystalline materials for application in carbon dioxide capture. This class of porous materials is highly crystalline and has pores like a sponge but which are much smaller. A library of new crystalline materials was designed through judicious selection of their chemical components to be specifically useful for this particular application. These materials have promising features towards achieving the ultimate goal of capturing carbon dioxide, by virtue of adding groups in their interior to specifically interact with the gas. An understanding of the structural chemistry of these new compounds is demonstrated.
Rank-based model for weighted network with hierarchical organization and disassortative mixing
Creators: name: Tian, Liang
name: Shi, Da-Ning
name: Zhu, Chen-Ping
Publisher: name: arXiv
Year: 2006
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Motivated by a recently introduced network growth mechanism that rely on the ranking of node prestige measures [S. Fortunato \emph{et al}., Phys. Rev. Lett. \textbf{96}, 218701 (2006)], a rank-based model for weighted network evolution is studied. The evolution rule of the network is based on the ranking of node strength, which couples the topological growth and the weight dynamics. Both analytical solutions and numerical simulations show that the generated networks possess scale-free distributions of degree, strength, and weight in the whole region of the growth dynamics parameter ($α>0$). We also characterize the clustering and correlation properties of this class of networks. It is showed that at $α=1$ a structural phase transition occurs, and for $α>1$ the generated network simultaneously exhibits hierarchical organization and disassortative degree correlation, which is consistent with a wide range of biological networks.
description: 4 pages, 5 figures
Bakamjian-Thomas mass operator for the few-nucleon system from chiral dynamics
Creators: name: Girlanda, L.
name: Klink, W. H.
name: Viviani, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present an exploratory study consisting in the formulation of a relativistic quantum mechanics to describe the few-nucleon system at low energy, starting from the quantum field theoretical chiral Lagrangian involving pions and nucleons. To this aim we construct a Bakamjian-Thomas mass operator and perform a truncation of the Fock space which respects at each stage the relativistic covariance. Such truncation is justified, at sufficiently low energy, in the framework of a systematic chiral expansion. As an illustration we discuss the bound state observables and low-energy phaseshifts of the nucleon-nucleon and pion-nucleon scattering at the leading order of our scheme.
description: 17 pages, 10 figures. Revised formulation, matches the journal version
Optical imaging beyond the diffraction limit via dark states
Creators: name: Li, Hebin
name: Sautenkov, Vladimir A.
name: Kash, Michael M.
name: Sokolov, Alexei V.
name: Welch, George R.
name: Rostovtsev, Yuri V.
name: Zubairy, M. Suhail
name: Scully, Marlan O.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the possibility of creating spatial patterns having subwavelength size by using the so-called dark states formed by the interaction between atoms and optical fields. These optical fields have a specified spatial distribution. Our experiments in Rb vapor display spatial patterns that are smaller than the length determined by the diffraction limit of the optical system used in the experiment. This approach may have applications to interference lithography and might be used in coherent Raman spectroscopy to create patterns with subwavelength spatial resolution.
description: 5 pages, 5 figures
The Dimmest State of the Sun
Creators: name: Yeo, K. L.
name: Solanki, S. K.
name: Krivova, N. A.
name: Rempel, M.
name: Anusha, L. S.
name: Shapiro, A. I.
name: Tagirov, R. V.
name: Witzke, V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: How the solar electromagnetic energy entering the Earth's atmosphere varied since pre-industrial times is an important consideration in the climate change debate. Detrimental to this debate, estimates of the change in total solar irradiance (TSI) since the Maunder minimum, an extended period of weak solar activity preceding the industrial revolution, differ markedly, ranging from a drop of 0.75 Wm-2 to a rise of 6.3 Wm-2. Consequently, the exact contribution by solar forcing to the rise in global temperatures over the past centuries remains inconclusive. Adopting a novel approach based on state-of-the-art solar imagery and numerical simulations, we establish the TSI level of the Sun when it is in its least-active state to be 2.0 +/- 0.7 Wm-2 below the 2019 level. This means TSI could not have risen since the Maunder minimum by more than this amount, thus restricting the possible role of solar forcing in global warming.
description: Supporting information: https://agupubs.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1029%2F2020GL090243&file=grl61316-sup-0001-Text_SI-S01.pdf
World civilization in the world global crisis
Creators: name: Belsky, Vitaliy Yu.
name: Gusev, Nikolay N.
Publisher: name: Вестник экономической безопасности
Year: 2019
Subjects: world civilization
global crisis
leading core of the world system
geopolitics
dominant civilization
western civilization
USA
civilizational challenges and threats

description: The article reveals a complex of contradictions associated with the process of globalization, permanent systemic crisis of the modern world economy, crisis phenomena in the sphere of global and regional politics, geopolitics in general. The role of Western civilization in the global processes of civilization is shown. The features of the system crisis of the world civilization influencing the further development of events and realization of different probabilistic tendencies in its resolution are dedicated.
On the water-bag model of dispersionless KP hierarchy (II)
Creators: name: Chang, Jen-Hsu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct the bi-Hamiltonian structure of the waterbag model of dKP and establish the third-order Hamiltonian operator associated with the waterbag model. Also, the symmetries and conserved densities of rational type are discussed.
description: 17 pages, no figures
Searching for Multiple Populations in Ruprecht 106
Creators: name: Frelijj, Heinz
name: Villanova, Sandro
name: Muñoz, Cesar
name: Fernández-Trincado, José
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: More than a decade has passed since the definition of Globular Cluster (GC) changed, and now we know that they host Multiple Populations (MPs). But few GCs do not share that behaviour and Ruprecht 106 is one of these clusters. We analyzed thirteen member red giant branch stars using spectra in the wavelength range 6120-6405 Angstroms obtained through the GIRAFFE Spectrograph, mounted at UT2 telescope at Paranal, as well as the whole cluster using C, V, R and I photometry obtained through the Swope telescope at Las Campanas. Atmospheric parameters were determined from the photometry to determine Fe and Na abundances. A photometric analysis searching for MPs was also carried out. Both analyses confirm that Ruprecht 106 is indeed one on the few GCs to host Simple Stellar Population, in agreement with previous studies. Finally, a dynamical study concerning its orbits was carried out to analyze the possible extra galactic origin of the Cluster. The orbital integration indicates that this GC belongs to the inner halo, while an Energy plane shows that it cannot be accurately associated with any known extragalactic progenitor.
description: 10 Figures (Figure 2 are 2 files) 3 tables (1 table without number)