cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The ultraviolet luminosity function of star-forming galaxies between redshifts of 0.6 and 1.2
Creators: name: Page, M. J.
name: Dwelly, T.
name: McHardy, I.
name: Seymour, N.
name: Mason, K. O.
name: Sharma, M.
name: Kennea, J. A.
name: Sasseen, T. P.
name: Rawlings, J. I.
name: Breeveld, A. A.
name: Ferreras, I.
name: Loaring, N. S.
name: Walton, D. J.
name: Symeonidis, M.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use ultraviolet imaging taken with the XMM-Newton Optical Monitor telescope (XMM-OM), covering 280 square arcminutes in the UVW1 band (effective wavelength 2910 Angstroms) to measure rest-frame ultraviolet (1500 Angstrom) luminosity functions of galaxies with redshifts z between 0.6 and 1.2. The XMM-OM data are supplemented by a large body of optical and infrared imaging to provide photometric redshifts. The XMM-OM data have a significantly narrower point-spread-function (resulting in less source confusion) and simpler K-correction than the GALEX data previously employed in this redshift range. Ultraviolet-bright active galactic nuclei are excluded to ensure that the luminosity functions relate directly to the star-forming galaxy population. Binned luminosity functions and parametric Schechter-function fits are derived in two redshift intervals: 0.6
description: 17 pages, 11 figures, accepted for publication in MNRAS
[Elicitation session in pairs]
Creators: name: Palacio, Philip Tim
name: Cathcart, Chundra
name: Sheil, Christine
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: cab

description: 4 WAV, 2 TextGrid, and 4 TXT files.
Elicitation of causativity (cac_cms_02, cac_cms_04).
Verb forms (cac_cms_01, cac_cms_03).
Black Jesus text (cac_cms_01).
Delay time computation for relativistic tunneling particles
Creators: name: Bernardini, Alex E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the tunneling zone solutions of a one-dimensional electrostatic potential for the relativistic (Dirac to Klein-Gordon) wave equation when the incoming wave packet exhibits the possibility of being almost totally transmitted through the barrier. The transmission probabilities, the phase times and the dwell times for the proposed relativistic dynamics are obtained and the conditions for the occurrence of accelerated tunneling transmission are all quantified. We show that, in some limiting cases, the analytical difficulties that arise when the stationary phase method is employed for obtaining phase (traversal) tunneling times are all overcome. Lessons concerning the phenomenology of the relativistic tunneling suggest revealing insights into condensed-matter experiments using electrostatic barriers for which the accelerated tunneling effect can be observed.
description: 17 pages, 4 figures
Present bounds on the relativistic energy density in the Universe from cosmological observables
Creators: name: Mangano, Gianpiero
name: Melchiorri, Alessandro
name: Mena, Olga
name: Miele, Gennaro
name: Slosar, Anze
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We discuss the present bounds on the relativistic energy density in the Universe parameterized in terms of the effective number of neutrinos N using the most recent cosmological data on Cosmic Microwave Background (CMB) temperature anisotropies and polarization, Large Scale galaxy clustering from the Sloan Digital Sky Survey (SDSS) and 2dF, luminosity distances of type Ia Supernovae, Lyman-alpha absorption clouds (Ly-alpha), the Baryonic Acoustic Oscillations (BAO) detected in the Luminous Red Galaxies of the SDSS and finally, Big Bang Nucleosynthesis (BBN) predictions for 4He and Deuterium abundances. We find N= 5.2+2.7-2.2 from CMB and Large Scale Structure data, while adding Ly-alpha and BAO we obtain N= 4.6+1.6-1.5 at 95 % c.l.. These results show some tension with the standard value N=3.046 as well as with the BBN range N= 3.1+1.4-1.2 at 95 % c.l., though the discrepancy is slightly below the 2-sigma level. In general, considering a smaller set of data weakens the constraints on N. We emphasize the impact of an improved upper limit (or measurement) of the primordial value of 3He abundance in clarifying the issue of whether the value of N at early (BBN) and more recent epochs coincide.
Ασκηση και ασθματικό παιδί
Creators: name: Μπισκανάκη, Φανή Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005

description: Το ασθμα είναι μια διαταραχή του αναπνευστικού συστήματος από την οποία υπολογίζεται ότι πάσχει το 2%-4% του πληθυσμού. Στην έρευνα συμμετείχαν 1120 μαθητές γυμνασίων και λυκείων των νομών Αρτας και Πρέβεζας. Η συλλογή δεδομένων έγινε με χρήση ερωτηματολογίων που συμπληρώθηκαν από τους γονείς, τους ιατρούς και τα ίδια τα παιδιά. Στη στατιστική επεξεργασία χρησιμοποιήθηκαν οι δοκιμασίες t,x^(2) ανάλυση διασποράς(ANOVA). Σκοπός της έρευνας ήταν να αξιολογηθεί ο ρόλος της άσκησης στη ζωή των ασθματικών κοριτσιών και αγοριών ηλικίας 8-16 ετών, ως αναφορά τα αποτελέσματα είναι πολύ σημαντικό ποσοστό των ασθματικών παιδιών απέχει από δραστηριότητες που σχετίζονται με την άσκηση στο σχολείο, στο σπίτι και στους χώρους ψυχαγωγίας. Κατ'αναλογία, μεγαλύτερο ποσοστό αγοριών συμμετέχει σε αθλητικούς συλλόγους απ'οτι κοριτσιών. Μικρότερο ποσοστό ασθματικών παιδιών ηλικίας 8-11 ετών συμμετέχει στις σχολικές αθλητικές ομάδες και σε αθλητικούς συλλόγους σε σχέση με τα παιδιά ηλικίας 12-16 ετών. Τα ασθματικά αγόρια ηλικίας 8-11 ετών ασκούνται περισσότερο σε σύγκριση με τα ασθματικά κορίτσια. Συμπερασματικά λοιπόν η δυνατότητα των ασθματικών παιδιών να συμμετέχουν σε ευχάριστες φυσικές δραστηριότητες φαίνεται να σχετίζεται θετικά με τη συνολικά ποιότητα της ζωή τους. Η υψηλή φυσική δραστηριότητα μεγάλωνε την πιθανότητα ένα παιδί να πάθει ασθματική κρίση όμως συνέχιζαν να ασκούνται
description: Asthma is a disturbance of the the respiratory system of which suffers a 2%-4% of the population. The aim of this atudy were to collect information about the relationship of the asthmatic child with physical exercise in Greece, to identity the relevant problems and difficulties the asthmatic child faces in school and at home, and to propose improvements in the interventions aimed at children with asthma. In this study 1120 pupils with asthma participated, recruited in the secondary and primary education schools in the counties of Arta and Preveza resuits. First, it was found that the number of asthma attacks during high school physical education were related positively to asthma severity and active quality of life in the 12-16 age group and negatively with frequency of visits to the psychologist in all ages. Active quality of life was related positively with total quality of life was negatively related to the parental attitudes about asthma and positively related with reacitvity. Finally, differences were also observed between the genders in certain variables such as the active quality of life. Conclusions exercise is asource of recreation and enjoyment for asthmatic children, although it increases the change of an asthma attack and the discomfort that may bring age and gender differentiate some difficulties that asthmatic children may have in relation to their illness and the role of exercise in it
Comment on "A local realist model for correlations of the singlet state'' (De Raedt et al., Eur. Phys. J. B 53: 139-142, 2006)
Creators: name: Seevinck, Michael
name: Larsson, Jan-Åke
Publisher: name: arXiv
Year: 2007
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: De Raedt et al. (Eur. Phys. J. B 53: 139-142, 2006) have claimed to provide a local realist model for correlations of the singlet state in the familiar Einstein-Podolsky-Rosen-Bohm (EPRB) experiment when time-coincidence is used to decide which detection events should count in the analysis, and furthermore that this suggests that it is possible to construct local realistic models that can reproduce the quantum mechanical expectation values. In this letter we show that these conclusions cannot be upheld since their model exploits the so-called coincidence-time loophole. When this is properly taken into account no startling conclusions can be drawn about local realist modelling of quantum mechanics.
description: 3 pages
A new correlator in quantum spin chains
Creators: name: Keating, J. P.
name: Mezzadri, F.
name: Novaes, M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a new correlator in one-dimensional quantum spin chains, the $s-$Emptiness Formation Probability ($s-$EFP). This is a natural generalization of the Emptiness Formation Probability (EFP), which is the probability that the first $n$ spins of the chain are all aligned downwards. In the $s-$EFP we let the spins in question be separated by $s$ sites. The usual EFP corresponds to the special case when $s=1$, and taking $s>1$ allows us to quantify non-local correlations. We express the $s-$EFP for the anisotropic XY model in a transverse magnetic field, a system with both critical and non-critical regimes, in terms of a Toeplitz determinant. For the isotropic XY model we find that the magnetic field induces an interesting length scale.
description: 6 pages, 1 figure
Quantum Transport in Two-Dimensional WS$_2$ with High-Efficiency Carrier Injection Through Indium Alloy Contacts
Creators: name: Lau, Chit Siong
name: Chee, Jing Yee
name: Ang, Yee Sin
name: Tong, Shi Wun
name: Cao, Liemao
name: Ooi, Zi-En
name: Wang, Tong
name: Ang, Lay Kee
name: Wang, Yan
name: Chhowalla, Manish
name: Goh, Kuan Eng Johnson
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: Two-dimensional transition metal dichalcogenides (TMDCs) have properties attractive for optoelectronic and quantum applications. A crucial element for devices is the metal-semiconductor interface. However, high contact resistances have hindered progress. Quantum transport studies are scant as low-quality contacts are intractable at cryogenic temperatures. Here, temperature-dependent transfer length measurements are performed on chemical vapour deposition grown single-layer and bilayer WS$_2$ devices with indium alloy contacts. The devices exhibit low contact resistances and Schottky barrier heights (\sim10 k$Ω$\si{\micro\metre} at 3 K and 1.7 meV). Efficient carrier injection enables high carrier mobilities ($\sim$190 cm$^2$V$^{-1}$s$^{-1}$) and observation of resonant tunnelling. Density functional theory calculations provide insights into quantum transport and properties of the WS$_2$-indium interface. Our results reveal significant advances towards high-performance WS$_2$ devices using indium alloy contacts.
description: 5 Figures
High Energy Neutrinos from Choked Gamma-Ray Bursts in AGN Accretion Disks
Creators: name: Zhu, Jin-Ping
name: Wang, Kai
name: Zhang, Bing
name: Yang, Yuan-Pei
name: Yu, Yun-Wei
name: Gao, He
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Both long-duration gamma-ray bursts (LGRBs) from core collapse of massive stars and short-duration GRBs (SGRBs) from mergers of binary neutron star (BNS) or neutron star--black hole (NSBH) are expected to occur in the accretion disk of active galactic nuclei (AGNs). We show that GRB jets embedded in the migration traps of AGN disks are promised to be choked by the dense disk material. Efficient shock acceleration of cosmic rays at the reverse shock is expected, and high-energy neutrinos would be produced. We find that these sources can effectively produce detectable TeV--PeV neutrinos through $pγ$ interactions. From a choked LGRB jet with isotropic equivalent energy of $10^{53}\,{\rm erg}$ at $100\,{\rm Mpc}$, one expects $\sim2\,(7)$ neutrino events detectable by IceCube (IceCube-Gen2). The contribution from choked LGRBs to the observed diffuse neutrino background depends on the unknown local event rate density of these GRBs in AGN disks. For example, if the local event rate density of choked LGRBs in AGN disk is $\sim5\%$ that of low-luminosity GRBs $(\sim10\,{\rm Gpc}^{-3}\,{\rm yr}^{-1})$, the neutrinos from these events would contribute to $\sim10\%$ of the observed diffuse neutrino background. Choked SGRBs in AGN disks are potential sources for future joint electromagnetic, neutrino, and gravitational wave multi-messenger observations.
description: 9 pages, 4 figures, 1 table, accepted for publication in ApJL
Designing sensor technology for estimating CO2 reductions through the adoption and use of improved cookstoves
Creators: name: Mettler, Timon
Publisher: name: Zenodo
Year: 2025

description: CO₂ certificate trading under the Paris Agreement relies on accurate emissions measurement. This thesis presents a low-cost, open-source data logger using a Raspberry Pi Pico, thermocouple, and scale to track cookstove runtime and wood consumption. Designed for off-grid deployment, it operates on solar power and transmits data via cellular networks to a cloud server. By ensuring precise emissions calculations, this system enhances climate change mitigation efforts and provides a scalable solution for data logging.
Fractional Dynamics and Modulational Instability in Long-Range Heisenberg Chains
Creators: name: Youwa, Laetitia Mbetkwe
name: Nguenang, Jean Pierre
name: Paglan, Paul André
name: Dauxois, Thierry
name: Trombettoni, Andrea
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2022
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We study the effective dynamics of ferromagnetic spin chains in presence of long-range interactions. We consider the Heisenberg Hamiltonian in one dimension for which the spins are coupled through power-law long-range exchange interactions with exponent $α$. We add to the Hamiltonian an anisotropy in the $z$-direction. In the framework of a semiclassical approach, we use the Holstein-Primakoff transformation to derive an effective long-range discrete nonlinear Schrödinger equation. We then perform the continuum limit and we obtain a fractional nonlinear Schrödinger-like equation. Finally, we study the modulational instability of plane-waves in the continuum limit and we prove that, at variance with the short-range case, plane waves are modulationally unstable for $α< 3$. We also study the dependence of the modulation instability growth rate and critical wave-number on the parameters of the Hamiltonian and on the exponent $α$.
Behaviour and social organization during the breeding season in Mionectes oleagineus (Aves, Tyrannidae)
Creators: name: Westcott, David Andrew
Publisher: name: University of British Columbia
Year: 2011

description: Mionectes oleagineus (Aves, Tyrannidae) is a small, sexually monomorphic, lek breeding bird. The behaviour and mating system of this species were studied on Costa Rica's Osa Peninsula over two years. In this thesis I ask three questions: 1) What kind of social organization does M. oleagineus exhibit? 2) Does habitat influence male display dispersion? and 3) What is the function of song in attracting mates and in male-male interactions? In Chapter 2, I describe M. oleagineus' social organization. There were three categories of males: territory owners, satellites and floaters. The latter 2 categories were non-territorial and represented half of the male population. I describe interactions between displaying males and visitors to their territories, including courtship display and aggressive interactions between males. Male display dispersion was highly variable in the study area, including classical leks, in which territories shared contiguous boundaries, an exploded lek, where the territories did not share boundaries, and solitary display territories. In Chapter 3, I test the hypothesis that the number of males that can settle in an area, and their subsequent display dispersion, is determined by the availability and dispersion of suitable habitat. Discriminant function analysis of measures of vegetation structure from both territories and non-territory sample plots showed that territory habitat could be distinguished from non-territory habitat. Eleven percent of the sample plots were described as suitable habitat in the analysis. Given that half the male population is non-territorial, the existence of unoccupied, suitable habitat makes it unlikely that habitat availability determines the number of males settling, or their display dispersion. The major occupation of males on their display territories is singing. In Chapter 4, I investigate the function of song for M. oleagineus using behavioural observation and an experiment involving temporary muting. Males which sang at higher rates received more visitors of both sexes. The territories of most muted territorial males were rapidly usurped by other males. Two of the muted males regained their territories upon regaining the ability to sing. This study is the first to directly demonstrate a key role for song in male-male interactions on leks. It also provides evidence that females use song in mate assessment.
Hybrid Dynamic Density Functional Theory for Polymer Melts and Blends
Creators: name: Honda, Takashi
name: Kawakatsu, Toshihiro
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We propose a high-speed and accurate hybrid dynamic density functional theory for the computer simulations of the phase separation processes of polymer melts and blends. The proposed theory is a combination of the dynamic self-consistent field (SCF) theory and a time-dependent Ginzburg-Landau type theory with the random phase approximation (GRPA). The SCF theory is known to be accurate in evaluating the free energy of the polymer systems in both weak and strong segregation regions although it has a disadvantage of the requirement of a considerable amount of computational cost. On the other hand, the GRPA theory has an advantage of much smaller amount of required computational cost than the SCF theory while its applicability is limited to the weak segregation region. To make the accuracy of the SCF theory and the high-performance of the GRPA theory compatible, we adjust the chemical potential of the GRPA theory by using the SCF theory every constant time steps in the dynamic simulations. The performance of the GRPA and the hybrid theories is tested by using several systems composed of an A/B homopolymer, an AB diblock copolymer, or an ABC triblock copolymer. Using the hybrid theory, we succeeded in reproducing the metastable complex phase-separated domain structures of an ABC triblock copolymer observed by experiments.
description: 30 pages, 9 figures, submitted to Macromolecules
Theoretical overview: towards understanding the quark-gluon plasma
Creators: name: Blaizot, Jean-Paul
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: I give a brief overview of recent theoretical developments concerning the high temperature phase of QCD, and the structure of hadronic wave functions at high energy.
description: 10 pages. Plenary talk at the 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM2006) held in Shanghai, China on November 14-20, 2006
Investigations into the mechanism of interaction between cisplatin and low-doses of x-irradiation in hypoxic cells
Creators: name: Walter, Patrick
Publisher: name: University of British Columbia
Year: 2011

description: Cisplatin (cis-cuammmedichloroplatinum(II)) is a highly effective chemotherapeutic drug given either as a single agent or in combination with other drugs to treat several types of tumors. Radiation therapy is also a successful treatment used for many types of tumors. However, many tumors contain hypoxic regions, which are resistant to treatment by radiation and some forms of chemotherapy. Combining cisplatin with radiation may offer advantages to counteract hypoxic resistance. While enhancement of radiation cell killing by cisplatin has been observed, the mechanism of the interaction of these two anti-cancer agents is unknown. In most in vitro experiments on radiosensitizers in cultured hypoxic cells extrapolation from high radiation dose experiments is used to predict low dose responses. In this work, clinically relevant doses are used to irradiate both CHO and V79 hypoxic cells. Their survival was assessed by using the Cell Analyzer Imaging System. Three main approaches were used to investigate the mechanism of interaction. In the first approach, the delivery time of cisplatin relative to irradiation was varied. Results show that enhancement of radiation cell killing was independent of the timing between X-rays and cisplatin administration. In the second approach a series of cisplatin analogs which varied in their DNA cross-linking ability were investigated. None of these analogs produced as strong an enhancement of radiation effects as did cisplatin. The final approach involved depleting intracellular glutathionewhich has been implicated in the chemical repair of the cisplatin-DNA crosslink. The depletion of glutathione by buthionine sulfoximine sensitized hypoxic CHO cells to the cisplatin X-ray combination. Results suggest that the DNA cisplatin cross-link may be involved in the enhancement of the effects of low-doses of X-rays. Chromosome analysis of hypoxic and oxic cells shows that cisplatin modifies the radiation dose response of chromosome aberrations. Finally, the results from all experiments suggest that misrepair of damage caused by X-rays and cisplatin may be important in the mechanism of their interaction.
Αλγεβρο-πολυωνυμικές υπολογιστικές μέθοδοι στη θεωρία ελέγχου
Creators: name: Βολογιαννίδης, Σταύρος Δ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005
Subjects: Γραμμικά δυναμικά συστήματα
Πολυωνυμικοί πίνακες
Υπολογιστικές μέθοδοι
Linear dynamical systems
Polynomial matrices
Computational methods

description: Η θεωρία πολυωνυμικών πινάκων παίζει πρωταρχικό ρόλο σε πολλά προβλήματα αυτόματου ελέγχου. Αυτή η διατριβή ασχολείται με βασικά θεωρητικά προβλήματα της πολυωνυμικής θεώρησης του αυτόματου ελέγχου, αλλά και με την ανάπτυξη υπολογιστικών μεθόδων για πράξεις πολυωνυμικών πινάκων μιας ή και περισσοτέρων μεταβλητών. Προτάθηκε μια νέα ισοδυναμία κανονικών πολυωνυμικών πινάκων, η οποία διατηρεί αναλλοίωτους τους πεπερασμένους και άπειρους στοιχειώδεις διαιρέτες και που αποτελεί άμεση γενίκευση της γνωστής αυστηρής ισοδυναμίας πρωτοβάθμιων πολυωνυμικών πινάκων. Επίσης προτάθηκε μια νέα οικογένεια συνοδευουσών μορφών πολυωνυμικών πινάκων με συγκεκριμένη και ιδιαίτερα απλή μορφή, τα μέλη της οποίας γράφονται σαν γινόμενο στοιχειωδών\"αραιών\" πινάκων. Σε αυτή την οικογένεια εκτός από την γνωστή πρώτη και δεύτερη συνοδεύουσα μορφή, περιλαμβάνονται και άλλες συνοδεύουσες με πολύ ενδιαφέρουσες ιδιότητες. Αναπτύχθηκαν και υλοποιήθηκαν δύο νέοι αλγόριθμοι για τον υπολογισμό του Moore-Penrose και Drazin γενικευμένων αντιστρόφων πολυωνυμικών πινάκων μιας ή περισσοτέρων μεταβλητών, που συνδυάζουν τεχνικές υπολογισμού/παρεμβολής και τον γρήγορο μετασχηματισμό Fourier(FFT). Περιγράφθηκε ένας αλγόριθμος για τον υπολογισμό της ελάχιστης πολυωνυμικής βάσης του πυρήνα ενός πολυωνυμικού πίνακα χρησιμοποιώντας διαδοχικές Sylvester ή Wolovich απαλείφουσες. Οι παραπάνω αλγόριθμοι αναλύθηκαν ως προς την ταχύτητα και ευρωστία τους, και αποδείχθηκαν αποδοτικότεροι από τους μέχρι στιγμής γνωστούς στη βιβλιογραφία
description: Polynomial matrix theory is very important to many automatic control related problems. This thesis focuses on basic theoretical problems of the polynomial point of view of automatic control, but also on the development of algorithms dealing with polynomial matrices of one or more variables. A new equivalence between polynomial matrices was introduced, that generalizes the well known strict equivalence between matric pencils, having as invariants the finite elementary divisor structure of the polynomial matrices involved. A new family of companion forms has also been presented, having a prticularly simple structure, whose members can be written as a product of certain elementary sparse matrices. In this family not only the well known first and second companion forms are included, but also other companion forms with very interesting properties. New algorithms for the calculation of the Moore-Penrose and Drazin inverses of polynomial matrices of one or more variables have been introduced, combining evaluation/interpolation techniques and the Fast Fourier Transform(FFT). Also a new algorithm concerning the calculation of a minimal polynomial basis of the algorithms have been analyzed regarding their speed and numerical robustness and proved to be more efficient than the others known to the literature
Selective association rule generation
Creators: name: Hahsler, Michael
name: Buchta, Christian
name: Hornik, Kurt
Publisher: name: arXiv
Year: 2008
Subjects: subject: Databases (cs.DB)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Mining association rules is a popular and well researched method for discovering interesting relations between variables in large databases. A practical problem is that at medium to low support values often a large number of frequent itemsets and an even larger number of association rules are found in a database. A widely used approach is to gradually increase minimum support and minimum confidence or to filter the found rules using increasingly strict constraints on additional measures of interestingness until the set of rules found is reduced to a manageable size. In this paper we describe a different approach which is based on the idea to first define a set of ``interesting'' itemsets (e.g., by a mixture of mining and expert knowledge) and then, in a second step to selectively generate rules for only these itemsets. The main advantage of this approach over increasing thresholds or filtering rules is that the number of rules found is significantly reduced while at the same time it is not necessary to increase the support and confidence thresholds which might lead to missing important information in the database.
Online Information Retrieval Evaluation using the STELLA Framework
Creators: name: Breuer, Timo
name: Tavakolpoursaleh, Narges
name: Schaible, Johann
name: Hienert, Daniel
name: Schaer, Philipp
name: Castro, Leyla Jael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Involving users in early phases of software development has become a common strategy as it enables developers to consider user needs from the beginning. Once a system is in production, new opportunities to observe, evaluate and learn from users emerge as more information becomes available. Gathering information from users to continuously evaluate their behavior is a common practice for commercial software, while the Cranfield paradigm remains the preferred option for Information Retrieval (IR) and recommendation systems in the academic world. Here we introduce the Infrastructures for Living Labs STELLA project which aims to create an evaluation infrastructure allowing experimental systems to run along production web-based academic search systems with real users. STELLA combines user interactions and log files analyses to enable large-scale A/B experiments for academic search.
description: arXiv admin note: text overlap with arXiv:2203.05430
Renormalisation Flow and Universality for Ultracold Fermionic Atoms
Creators: name: Diehl, S.
name: Gies, H.
name: Pawlowski, J. M.
name: Wetterich, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A functional renormalisation group study for the BEC-BCS crossover for ultracold gases of fermionic atoms is presented. We discuss the fixed point which is at the origin of universality for broad Feshbach resonances. All macroscopic quantities depend only on one relevant parameter, the concentration a k_F, besides their dependence on the temperature in units of the Fermi energy. In particular, we compute the universal ratio between molecular and atomic scattering length in vacuum. We also present an estimate to which level of accuracy universality holds for gases of Li and K atoms.
description: 19 pages, 3 figures, to be published in PRA
Thermodynamics and Heat Engines of Black Holes with Born-Infeld-type Electrodynamics
Creators: name: Balart, Leonardo
name: Fernando, Sharmanthie
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we have studied electrically charged black holes in a new model of nonlinear electrodynamics introduced by Kruglov in Ref. [1]. There are two parameters for the theory and the black hole could have up to two horizons. Thermodynamics is studied in the extended phase space where the pressure is proportional to the cosmological constant. First law and the Smarr formula are derived. There are phase transitions similar to the Van der Waals liquid-gas phase transitions. Black hole is also studied as a heat engine and have discussed how the parameters in the nonlinear electrodynamics theory effect the efficiency of the heat engine.
description: 17 pages, 7 figures
On the Average Comoving Number Density of Halos
Creators: name: Del Popolo, A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: I compare the numerical multiplicity function given in Yahagi, Nagashima & Yoshii (2004) with the theoretical multiplicity function obtained by means of the excursion set model and an improved version of the barrier shape obtained in Del Popolo & Gambera (1998), which implicitly takes account of total angular momentum acquired by the proto-structure during evolution and of a non-zero cosmological constant. I show that the multiplicity function obtained in the present paper, is in better agreement with Yahagi, Nagashima & Yoshii (2004) simulations than other previous models (Sheth & Tormen 1999; Sheth, Mo & Tormen 2001; Sheth & Tormen 2002; Jenkins et al. 2001) and that differently from some previous multiplicity function models (Jenkins et al. 2001; Yahagi, Nagashima & Yoshii 2004) it was obtained from a sound theoretical background.
Συμβολή των γεωγραφικών συστημάτων πληροφοριών(GIS) στη διαχείριση των υδατικών πόρων της υδρολογικής λεκάνης του Γρεβενίτη ποταμού Νομού Γρεβενών
Creators: name: Μουρατίδης, Ηλίας Μ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005
Subjects: Διαχείριση υδατικών πόρων
Μεσοελληνική Αύλακα
Μολασσικά ιζήματα
Water resources management
Mesohellenic trough
Molassic sediments

description: Η παρούσα διατριβή αφορά τη μεθοδολογική προσέγγιση της εφαρμογής των αρχών και των διαδικασιών της ορθολογικής διαχείρισης και αξιοποίησης των υδατικών πόρων με χρήση των γεωγραφικών συστημάτων πληροφοριών(GIS), στη λεκάνη του Γρεβενίτη ποταμού, που αποτελεί τμήμα της υδρολογικής λεκάνης του Αλιάκμονα, και αναπτύσσεται στην ευρύτερη περιοχή της πόλης των Γρεβενών. Με την αξιοποίηση των γεωμορφολογικών, γεωλογικών, υδρολογικών, υδρογεωλογικών και άλλων στοιχείων, τη δημιουργία βάσεων δεδομένων για τη συνεχή παρακολούθηση και την άμεση αποτύπωση διαφόρων παραμέτρων και των μεταβολών τους, καταδεικνύεται η σημαντική συμβολή των GIS στην ορθολογική διαχείριση των υδατικών πόρων μιας υδρολογικής λεκάνης. Επίσης αναδεικνύεται τόσο η δυνατότητα αυτοδυναμίας της λεκάνης του Γρεβενίτη σε υδατικούς πόρους για την κάλυψη των συνολικών αναγκών της περιοχής σε νερό, όσο και η δημιουργία νέων προοπτικών βιώσιμης ανάπτυξης με την αξιοποίηση των επιφανειακών νερών του Γρεβενίτη και των νερών του υπόγειου υδριφορέα, που αναπτύσσεται στα πλειοπλειστικαινικά ιζήματα της περιοχής
description: This dissertation addresses the application of procedures of sustainable management and development of the water resources of the Greveniti basin using geographical information system(GIS) technology. The Greveniti river is a tributary to the Aliakmon and its drainage basin part of the greater hydrologic basin of the Aliakmon river(NW Greece). It's shown the important contribution of GIS technology in sustainable management of the water resources of a hydrologic basin, with the utilization of geomorphological, geological, hydrological and other data, the creation of data basis for the continuous observation of the various parameters with their changes and the convenience for direct drawing of thematic maps. It is area of Greveniti basin in covering the total water demands and the creation of new perspectives for a sustainable development of the area with the explotation of the surface waters of the Greveniti river and the groundwater of the aquifer formed in the Plio-Pleistocene sediments of the area
Apistidae
Creators: name: Golani, Daniel
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Apistidae

description: APISTIDAE   Apistus carinatus (Bloch & Schneider 1801)
 Gulf of Suez: Egypt (Cuvier in Cuvier & Valenciennes 1829b, as Apistus israelitarum; Bayoumi 1972).
 Gulf of Aqaba: Israel (Golani & Lerner 2007).
 Red Sea main basin: Egypt (Klunzinger 1870, as Apistus israelitarum), Eritrea (Frøiland 1972), Saudi Arabia (Bogorodsky et al. 2014b).
 General distribution: Red Sea, Indo-West Pacific: East Africa east to Philippines and Papua (Indonesia).
description: Published as part of Golani, Daniel & Fricke, Ronald, 2018, Checklist of the Red Sea Fishes with delineation of the Gulf of Suez, Gulf of Aqaba, endemism and Lessepsian migrants, pp. 1-215 in Zootaxa 4509 (1) on page 56, DOI: 10.11646/zootaxa.4509.1.1, http://zenodo.org/record/2607566
Cosmological Singularities and Bel-Robinson Energy
Creators: name: Cotsakis, Spiros
name: Klaoudatou, Ifigeneia
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the problem of describing the asymptotic behaviour of \textsc{FRW} universes near their spacetime singularities in general relativity. We find that the Bel-Robinson energy of these universes in conjunction with the Hubble expansion rate and the scale factor proves to be an appropriate measure leading to a complete classification of the possible singularities. We show how our scheme covers all known cases of cosmological asymptotics possible in these universes and also predicts new and distinct types of singularities. We further prove that various asymptotic forms met in flat cosmologies continue to hold true in their curved counterparts. These include phantom universes with their recently discovered big rips, sudden singularities as well as others belonging to graduated inflationary models.
description: 20 pages, latex; v2: 21 pages, additions to comply with final version, to appear in the J. Geom. Phys
On the equivalence of self-consistent equations for nonuniform liquids: a unified description of the various modifications
Creators: name: Frusawa, Hiroshi
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: A variety of self-consistent (SC) equations have been proposed for non-uniform states of liquid particles under external fields, including adsorbed states at solid substrates and confined states in pores. External fields represent not only confining geometries but also fixed solutes. We consider SC equations ranging from the modified Poisson-Boltzmann equations for the Coulomb potential to the hydrostatic linear response equation for the equilibrium density distribution of Lennard-Jones fluids. Here, we present a unified equation that explains the apparent diversity of previous forms and proves the equivalence of various SC equations. This unified description of SC equations is obtained from a hybrid method combining the conventional density functional theory and statistical field theory. The Gaussian approximation of density fluctuations around a mean-field distribution is performed based on the developed hybrid framework, allowing us to derive a novel form of the grand-potential density functional that provides the unified SC equation for equilibrium density.
description: 28 pages, 1 figure
Non-uniqueness of massless transverse-traceless graviton
Creators: name: Aoki, Katsuki
name: Di Filippo, Francesco
name: Mukohyama, Shinji
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study a theory of minimally modified gravity called cuscuton/VCDM that propagates only two gravitational degrees of freedom. Despite being apparently different from general relativity (GR), it is in principle possible that this theory might be obtained via a field redefinition starting from the GR action. This would make the vacuum theory equivalent to GR and the theory would differ from GR only in the presence of matter. In this paper, studying the dispersion relation of gravitational waves and the dynamics of the Bianchi-I universe, we prove that such a field redefinition does not exist and that the theory differs from GR already in vacuum.
description: 19 pages, 1 figure
Linear growth of the trace anomaly in Yang-Mills thermodynamics
Creators: name: Giacosa, Francesco
name: Hofmann, Ralf
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the lattice work by Miller [1,2] and in the work by Zwanziger [3] a linear growth of the trace anomaly for high temperatures was found in pure SU(2) and SU(3) Yang-Mills theories. These results show the remarkable property that the corresponding systems are strong interacting even at high temperatures. We show that within an analytical approach to Yang-Mills thermodynamics this linear rise is obtained and is directly connected to the presence of a temperature-dependent ground state, which describes (part of) the nonperturbative nature of the Yang-Mills system. Our predictions are in approximate agreement with [1,2,3]
description: 9 pages and 2 figures
[Elicitation session in pairs]
Creators: name: Chen, I-Hsuan
name: Kang, Shinae
name: Stickles, Elise
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2020
Subjects: subject: cab

description: 2 WAV, 1 TextGrid, 1 TXT file.
Complement clauses (ihc).
Διαπροσωπικές σχέσεις στο νηπιαγωγείο: αντιλήψεις νηπιαγωγών και μαθητών για τις μεταξύ τους σχέσεις
Creators: name: Γρηγοριάδης, Αθανάσιος Γ.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005
Subjects: Παιδαγωγική αλληλεπίδραση
Νηπιαγωγός-μαθητής
Kindergarten teacher-child relationship

description: Αντικείμενο της παρούσας εργασίας αποτελούν οι διαπροσωπικές σχέσεις μεταξύ νηπιαγωγών και μαθητών προσχολικής ηλικίας. Ειδικότερα επιχειρείται η διερεύνηση των αντιλήψεων των νηπιαγωγών και των παιδιών για η μεταξύ τους σχέση και καταγράφονται οι αντιλήψεις των νηπιαγωγών για την προσαρμογή των παιδιών στο σχολικό περιβάλλον. Επιπλέον εξετάζονται τα κριτήρια που χρησιμοποιούν τα παιδιά για να "αξιολογήσουν" την ποιότητα της σχέσης με τη νηπιαγωγό τους, καθώς και ο βαθμός συμφωνίας ανάμεσα στις αντιλήψεις νηπαιγωγών και παιδιών για την ποιότητα της σχέσης τους. Η προσέγγιση του θέματος επιχειρείται σε θεωρητικό και εμπειρικό επίπεδο. Στο θεωρητικό μέρος παρουσιάζεται και αναλύεται κριτικά το θεωρητικό πλαίσιο της εργασίας. Παρουσιάζονται η θεωρία της προσκόλλησης και η αυτοσυστημική θεωρία και περιγράφονται βασικοί άξονες των θεωριών αυτών. Στο ερευνητικό μέρος περιγράφονται οι βασικοί άξονες τους οποίους αποσκοπεί να διερευνήσει η εργασία, διατυπώνονται οι σχετικές υποθέσεις και παρουσιάζεται η μεθοδολογία της έρευνας. Για την εκτίμηση των υπό έρευνα παραγόντων χορηγήθηκαν δύο ερωτηματολόγια-κλίμακες στις νηπιαγωγούς και πραγματοποιήθηκαν δύο συνεντεύξεις με κάθε παιδί που συμμετείχε στην έρευνα
description: The interpersonal relationships between kindergarten teachers and children constitute the subject of this study. More specifically, their perceptions for this relationship are being thoroughly looked into. Furthermore, kindergarten teachers' perceptions concerning the children's adjustment to the school environment are being recorded. In addition, the criteria used by children to assess the quality of their relationship with their kindergarten teachers are bieng examined, as well as the correlation between teacher's and children's perceptions regarding the quality of their relationship
Aploactinidae
Creators: name: Golani, Daniel
name: Fricke, Ronald
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Actinopterygii
Perciformes
Aploactinidae

description: APLOACTINIDAE   Cocotropus steinitzi Eschmeyer & Dor 1978
 Gulf of Suez: ¯
 Gulf of Aqaba: Israel (Eschmeyer & Dor 1978).
 Red Sea main basin: ¯
 General distribution: Red Sea, Indo-West Pacific: Andaman Islands; northern Papua New Guinea.
 * Ptarmus gallus (Kossmann & Räuber 1877)
 Gulf of Suez: Egypt (Fricke et al. 2017c).
 Gulf of Aqaba: ¯
 Red Sea main basin: Egypt (Botros 1971), Sudan (Frøiland 1972; Johnson 2004), Eritrea (Kossmann & Räuber 1877, as Tetraroge gallus), Saudi Arabia (Tortonese 1983).
 General distribution: Red Sea endemic.
description: Published as part of Golani, Daniel & Fricke, Ronald, 2018, Checklist of the Red Sea Fishes with delineation of the Gulf of Suez, Gulf of Aqaba, endemism and Lessepsian migrants, pp. 1-215 in Zootaxa 4509 (1) on page 57, DOI: 10.11646/zootaxa.4509.1.1, http://zenodo.org/record/2607566
Comprehension and production of written discourse in a university EFL context
Creators: name: Χατζηθεοδώρου, Αννα-Μαρία Ι.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005
Subjects: Κειμενική ανάλυση
Τεχνική της περίληψης
Text analysis
Summerizing

description: Η διδακτορική διατριβή πραγματεύεται την κατανόηση και παραγωγή γραπτού λόγου από ελληνες φοιτητές της αγγλικής ως ξένης γλώσσας. Πιο συγκεκριμένα, προτείνεται ένα μοντέλο ανάλυσης γραπτών κειμένων, σύμφωνα με το οποίο ο λόγος(discourse) ο οποίος εκφράζεται σε ένα γραπτό κείμενο(text) μπορεί να αναλυθεί σε τρία επίπεδα : τις ιδέες(ideas), τη στάση του συγγραφέα απέναντι στο θέμα του κειμένου(authorial stance) και την κειμενική διάρθρωση(textual organization). Τα παραπάνω επίπεδα παραπέμπουν σε μια ρητορική προσέγγιση κειμένων, η οποία λαμβάνει υπόψη ρητορικές δομές της γλώσσας όπως υπαινιγμοί, ειρωνεία, μεταφορά, ουσιαστικά ή επιρρήματα που έχουν πολλαπλές χρήσεις στο λόγο, κλπ. Στα πλαίσια της πειρατικής έρευνας της διατριβής, φοιτητές στο Αγγλικό Τμήμα του Αριστοτελείου Πανεπιστημίου παρήγαγαν περιλήψεις γραπτών κειμένων. Οι περιλήψεις αυτές συζητήθηκαν σύμφωνα με το προτεινόμενο μοντέλο ανάλυσης γραπτού λόγου. Τα αποτελέσματα της έρευνας κατέδειξαν ότι η διδασκαλία σύμφωνα με το μοντέλο είναι σημαντική για την παραγωγή σωστών περιλήψεων. Επομένως, υποστηρίζεται ότι το προτεινόμενο μοντέλο μπορεί να συνεισφέρει θετικά στη διδακτική των γλωσσών. Επίσης, παρουσιάζονται συγκεκριμένες προτάσεις σχετικά με το πως πρέπει να διδάσκεται η τεχνική της περίληψης και γενικότερα, αλλες μορφές γραπτού λόγου, όπως π.χ. η επιχειρηματολογία, σε μαθητές της Αγγλικής σε διάφορα επίπεδα. Τέλος, εξετάζεται η δυνατότητα εφαρμογής του μοντέλου στην αξιολόγηση γραπτών κειμένων
description: The thesis concerns comprehension and production of written discourse by Greek university EFL students. More specifically, a novel discourse-oriented framework for text analysis is proposed that segments meaning into the levels of ideas, authorial stance, and textual organization. These levels are reflected in rhetorical techniques such a polyphony, metaphor, irony, hyperbole, modality, parallelism, resurrence and attitudinally-loaded lexical items. An experimental study was conducted and invelved two experemental groups that were instructed to summarize by drawing on the proposed framework and two control groups. Participants produced written summaries of argumentative texts that were then analyzed qualitatively and quantitatively. Results illustrated a veritable connection between effective performance in summarizing and instruction operating along the lines of the proposed discourse-analytic framework. Finally, the applicability of the framework to teacher training, language instruction(in particular, summary writing and text analysis), and language assessment is discussed. It is contended that a language curriculum that capitalizes on aspects of meaning broadens the scope of language learning and yields interesting insights into the working of language
"Who is't can read a woman ?": the fashioning of the female in Shakespeare
Creators: name: Γεωργοπούλου, Ξένη Ν.
Publisher: name: Aristotle University of Thessaloniki
Year: 2005
Subjects: Αναγέννηση
Renaissance

description: Η διατριβή μου ερευνά τις απέλπιδες απόπειρες των Σαιξπηρικών ανδρών να διαμορφώσουν τη γυναικεία ταυτότητα κατά τρόπο που να εξασφαλίζει τον δικό τους αυτοπροσδιορισμό, και αποσκοπεί στο να δείξει πόσο μάταιες είναι αυτές οι απόπειρες. Στον Σαίξπηρ το χυμώδες σώμα αποδεικνύεται πιο ασταθές στους άνδρες παρά στις γυναίκες. Η ανάγκη του άνδρα ν'αποκρυπτογραφήσει τη γυναίκα δεν αποκαλύπτει παρά το δικό τους άγχος, η χρήση βίας σημαίνει πως η ανδρική ισχύς δεν είναι αυτονόητη, και η απόπειρα του άνδρα ν'αποκαταστήσει την τιμή του μειώνοντας την ανυπότακτη γυναίκα είναι μια ακόμη υπενθύμιση της ανικανότητας του αν την ελέγξει, και η αναδιαμόρφωσή της στο τέλος των έργων δεν της αποδίδει παρά νέα(θετικά) στερότυπα, που μοιάζουν τόσο ασταθή όσο τα(αρνητικά) στερεότυπα που της προσδόθηκαν νωρίτερα στο έργο. οι γυναίκες τελικά αποδεικνύονται ένα κείμενο που δε μπορεί ν'αποκρυπτογραφηθεί, μια φυσική δύναμη που δε μπορεί να διαμορφωθεί. Η ανάλυσή μου ακολουθεί την προσέγγιση του πολιτισμικού υλισμού-νέου ιστορισμού, με αναφορές στη γλωσσολογία, τον στρουκτουραλισμό και τον μετα-στρουκτουραλισμό
description: My thesis explores the desperate attempts of Shakespeare's men to fashion female identity in a way that ensures their own selfdefinition, and aims to prove how futile these efforts are.In Shakespeare the humorous body turns out to be more unstable in men than in women; man's urge to decipher woman only reveals his own anxiety; his use of violence implies that male power is not self-evident, and his attempt to reinstate male honour through the humiliation of the unruly woman is yet another reminder of his inability to control her; and her refashioning at the end of the plays merely ascribes to her new(positive) steretypes, which seem as unstable as the(negative) stereotypes she was ascribed previously in the play. Women eventually prove a text that cannot be deciphered, a natural force that cannot be fashioned. My analysis follows a cultural-materialist-was historicist approach, with references to linguistics, structuralism and post structuralism