cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Multi-wavelength Analysis of the Faint Radio Sky (COSMOS-XS): the Nature of the Ultra-faint Radio Population
Creators: name: Algera, H. S. B.
name: Van der Vlugt, D.
name: Hodge, J. A.
name: Smail, I.
name: Novak, M.
name: Radcliffe, J. F.
name: Riechers, D. A.
name: Röttgering, H.
name: Smolčić, V.
name: Walter, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Ultra-deep radio surveys are an invaluable probe of dust-obscured star formation, but require a clear understanding of the relative contribution from radio AGN to be used to their fullest potential. We study the composition of the $μ$Jy radio population detected in the Karl G. Jansky Very Large Array COSMOS-XS survey based on a sample of 1540 sources detected at 3 GHz over an area of $\sim350\text{arcmin}^2$. This ultra-deep survey consists of a single pointing in the well-studied COSMOS field at both 3 and 10 GHz and reaches RMS-sensitivities of $0.53$ and $0.41μ$Jy beam$^{-1}$, respectively. We find multi-wavelength counterparts for $97\%$ of radio sources, based on a combination of near-UV/optical to sub-mm data, and through a stacking analysis at optical/near-infrared wavelengths we further show that the sources lacking such counterparts are likely to be high-redshift in nature (typical $z\sim4-5$). Utilizing the multi-wavelength data over COSMOS, we identify AGN through a variety of diagnostics and find these to make up $23.2\pm1.3\%$ of our sample, with the remainder constituting uncontaminated star-forming galaxies. However, more than half of the AGN exhibit radio emission consistent with originating from star-formation, with only $8.8\pm0.8\%$ of radio sources showing a clear excess in radio luminosity. At flux densities of $\sim30μ$Jy at 3 GHz, the fraction of star-formation powered sources reaches $\sim90\%$, and this fraction is consistent with unity at even lower flux densities. Overall, our findings imply that ultra-deep radio surveys such as COSMOS-XS constitute a highly effective means of obtaining clean samples of star-formation powered radio sources.
description: Accepted for publication in ApJ; 23 pages + appendices; 15 figures in main text. This is a companion paper to Van der Vlugt et al., on arXiv today
Elicitation of verb paradigms from unpublished Goddard material
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300120-05: Verb paradigm elicitation based on unpublished material transcribed by P.E. Goddard (Bancroft Library CU-23.1 12.14.1, file 2184-12 (4).pdf).
INSOLENTITHECA EMEND., PROTO  INSOLENTITHECA N. GEN., AND CALIGELLIDAE EMEND., PERMANENT CYSTS OF PALAEOZOIC FORAMINIFERA?
Creators: name: VACHARD, DANIEL
name: CÓZAR, PEDRO
Publisher: name: Università degli Studi di Milano
Year: 2004

description: Insolentitheca was interpreted as a microproblematicum, a foraminiferal test, or a syzygial cyst. Arguments are listed versus syzygial cysts or ordinary foraminiferal agglutinates, and for permanent cysts with probable infaunal life. Protoinsolentitheca fundamenta n. gen. n. sp. is described, which links Insolentitheca and the Caligellidae. Some elements of nomenclature are introduced to describe the particular tests of the Caligellidae. These taxa could be basically represented by an infaunal naked or chitinaceous foraminifer, which secretes during its lifetime a calcified perimeter denominated the chimney, only present in the Caligellidae. To this initial secretion are added two types of "agglutinated" and bioeroded tests: the fundamental in Protoinsolentitheca and Insolentitheca, and the bricks, in Insolentitheca only.
description: Rivista italiana di Paleontologia e Stratigrafia, Vol 110, No 3
Εξοικονόμηση ενέργειας σε θερμοκήπια με ηλιακό παθητικό σύστημα θέρμανσης σε συνδυασμό με υδρορροή-υδροπονίας
Creators: name: Κούγιας, Παναγιώτης Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Θερμοκήπιο
Εξοικονόμηση
Ενέργεια
Παθητικό
Ηλιακό σύστημα
Greenhouse
Saving
Energy
Passive
Solar system

description: Η παρούσα έρευνα μελετά την πιθανότητα εξοικονόμησης ενέργειας με τη χρήση παθητικού ηλιακού συστήματος με πλαστικές σακούλες πληρωμένες με νερό σε ένα θερμοκήπιο όπου υπήρχε εγκατεστημένη υδροπονική καλλιέργεια τομάτας. Η υδροπονική καλλιέργεια τομάτας (Optimum sp) καλλιεργήθηκε σε πετροβάμβακα, ο οποίος ήταν τοποθετημένος πάνω στις πλαστικές σακούλες πολυαιθυλενίου. Η αξιολόγηση του παθητικού συστήματος έγινε συγκριτικά με ένα σύστημα συμβατικής θέρμανσης, όπου οι πλάκες πετροβάμβακα τοποθετήθηκαν πάνω σε πλαστική υδροροή. Τα συμπεράσματα της έρευνας ήταν η σημαντική μείωση της κατανάλωσης συμβατικού καυσίμου από τη χρήση του παθητικού ηλιακού συστήματος. Το ποσοστό της εξοικονόμησης ενέργειας αποδεικνύει ότι και μπορεί να μειωθεί σημαντικά και το κόστος της παραγωγής. Τέλος, η εφαρμογή του παθητικού ηλιακού συστήματος συνέβαλε στην ομαλότερη διακύμανση της θερμοκρασίας του αέρα στο εσωτερικό περιβάλλον του θερμοκηπίου, αλλά και της θερμοκρασίας στο εσωτερικό του πετροβάμβακα.
description: The present research investigates the possibility of energy saving using passive solar sleeves filled with water in a greenhouse where tomato is cultivated hydroponically. In the hydroponic installation, tomato (Optimum sp) was cultivated in a chemical inert substrate "rockwool", which was placed on film of polyethylene filled with water. The evaluation of the passive system has been done in comparison with a conventional system of heating, placed in a greenhouse where rockwool slabs were placed on plastic gutter. The conclusion derived by this is that the consumption of the conventional fuel used was significantly decreased with the use of the hydroponic solar heating system. The amount of energy saving proves that the crop production cost can be also significantly reduced. The application of the particular system contributed in the smoother fluctuation of temperature of the greenhouse air and the rockwool slabs.
CONCEPTUAL DIMENSIONS AND DIRECTIONS OF DECENTRALIZATION AND THEIR SIGNIFICANCE FOR UKRAINIAN EDUKATION
Creators: name: Kit, M.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: decentralization
deconcentration
delegation
devolution
divestment
decentralization of education.

description: The concept of "decentralization" is explored in the context of transfer of powers to lower levels of government. The interdependence of power and administrative competences of the state, regional, local and public levels is analyzed. Different directions of decentralization are considered, such as administrative, financial and controlling. Decentralization of education in all its multidimensionality is defined as a special direction.
Dissipative Tunneling in 2 DEG: Effect of Magnetic Field, Impurity and Temperature
Creators: name: Bandyopadhyay, Malay
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We have studied the transport process in the two dimensional electron gas (2DEG) in presence of a magnetic field and a dissipative environment at temperature T. By means of imaginary time series functional integral method we calculate the decay rates at finite temperature and in the presence of dissipation. We have studied decay rates for wide range of temperatures -- from the thermally activated region to very low temperature region where the system decays by quantum tunneling. We have shown that dissipation and impurity helps the tunneling. We have also shown that tunneling is strongly affected by the magnetic field. We have demonstrated analytical results for all the cases mentioned above.
description: 8 pages, 2 figures
DEVELOPMENT OF ECONOMIC COMPETENCIES IN THE EDUCATIONAL PROCESS OF THE FUTURE ECONOMISTS
Creators: name: Kovalova, K.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: economic competencies
pedagogical conditions
future specialists of the economic sphere
professional competence
education.

description: The article examines the development of economic competencies of the students. In the conditions of reforming the economy of Ukraine, the modern paradigm of education involves the training of a highly skilled future economists. The purpose of the article is to show the importance of formation of the students’competencies. On the basis of generalization of literary sources we can determine the structure of professional competence of future specialists of the economic sphere. It has been proved that the purpose of the development of personal competences is to stimulate students' interest in economic disciplines, form the ability to freely use professional economic terminology, promote the abilities of gifted students, involve students in active participation in various conferences, professional contests, etc. Also the article shows the necessity of creation of the pedagogical conditions in which the competences should be formed. These conditions include: 1) the interest of students in professional activities; 2) understanding the value of professional terminology in professional activity; 3) self-education, the ability to critically evaluate and analyze the results of their work; 4) creative approach of students to the acquisition of professional terminology.
Ανάλυση λόγου των άρθρων για την ιστορία των μαθηματικών στα περιοδικά Ευκλείδης Α', Β', Γ'
Creators: name: Αργυροπούλου, Βασιλική Αντωνίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Περιοδικά Ευκλείδης Ά, ΄Β και ΄Γ
Ιστορία των μαθηματικών
Ανάλυση λόγου
Λειτουργίες της γλώσσας
Απολυτοκρατική άποψη
Άποψη της διαψευσιμότητας
Euclid A,B and C
The history of mathematics
The analysis of speech
Language functions
Absolutism
Fallibilism

description: Η παρούσα μεταπτυχιακή εργασία περιλαμβάνει τη συστηματική μελέτη των περιοδικών "Ευκλείδης Ά, ΄Β και ΄Γ" που εκδόθηκαν από την Ελληνική Μαθηματική Εταιρεία κατά το χρονικό διάστημα 1990 εως 2005. Μέσα από τη συστηματική μελέτη επιδιώχτηκε η ανάλυση λόγου των άρθρων που αναφέρονται στην ιστορία των μαθηματικών. Στόχος της παρούσας εργασίας ήταν να εντοπίσει σε ποια χρονολογική περίοδο της ιστορίας των μαθηματικών δίνεται ιδιαίτερη βαρύτητα, να διερευνήσει την εικόνα που δημιουργεί ο λόγος των μαθηματικών άρθρων για την επιστήμη των μαθηματικών και της διδασκαλίας του, να παρουσιάσει διαμέσου του γραπτού λόγου των περιοδικών τη σύνδεση ή μη της μαθηματικής επιστήμης με τα υπόλοιπα γνωστικά αντικείμενα και την καθημερινή ζωή των ανθρώπων.
description: The present postgraduate work includes the systematic study of the "Euclid A, B and C" magazines that were published by the Greek Mathematics Association from 1990 until 2005. The analysis of speech in the articles that are referred to the history of mathematics was sought through the systematic study. The aim of the present work was to locate in which chronological period of the history of mathematics is given particular importance, to view the image which the speech of the mathematical articles on the science of mathematics and its teaching creates, to present through the written speech in the magazines, if there is a connection or not with the science of mathematics and the rest of the cognitive objects as well as people's everyday life.
Final-state $NN$-rescattering in spin asymmetries of $d(γ,π^-)pp$ reaction
Creators: name: Darwish, Eed M.
name: Salam, Agus
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The role of the final-state $NN$-rescattering ($NN$-FSI) in the polarization observables of the inclusive reaction $d(γ,π^-)pp$, involving polarization of the photon beam and/or the deuteron target, is investigated. Various single- and double-spin asymmetries are studied with respect to the influence of such interaction effect and numerical predictions are given for forthcoming experiments. It has been found that the effect of $NN$-FSI is quite important for the single-spin asymmetries $Σ$, $T_{20}$, $T_{21}$ and $T_{22}$ and the double-spin asymmetry $T^{\ell}_{20}$, whereas it is much less important for the vector target asymmetry $T_{11}$ and other beam-target double-polarization asymmetries. Furthermore, we found that the inclusion of the $NN$-FSI improves the description of the LEGS data for the linear photon asymmetry.
description: 20 pages, 16 figures, accepted for publication in Nucl. Phys. A, (2005)
Αλληλεπιδράσεις μικροοργανισμών απομονωμένων από ελληνικά παραδοσιακά γαλακτοκομικά προϊόντα
Creators: name: Βούλγαρη, Κωνσταντίνα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Γαλακτικά βακτήρια
Αντιμυκητιακές δράσεις
Βακτηριοσίνες
Bacteriocins
LAB lactic acid bacteria
Antifungal metabolisms

description: Στην εργασία αυτή μελετήθηκε η ικανότητα επιλεγμένων στελεχών γαλακτικών βακτηρίων ναπαράγουν αντιμυκητιακές και αντιβακτηριακές ουσίες, ικανές να αναχαιτίσουν τόσο την ανάπτυξηζυμών και μυκήτων που απαντώνται σε παραδοσιακά ελληνικά γαλακτοκομικά προϊόντα, όσο καιτην ανάπτυξη παθογόνων και άλλων μικροοργανισμών.Βρέθηκε ότι η πλειοψηφία των στελεχών παρουσίασε ευρύ φάσμα δράσης αναχαιτίζοντας τόσοζύμες και μύκητες, όσο και παθογόνους μικροοργανισμούς και μικροοργανισμούς-δείκτες.Ενδιαφέροντα στελέχη αναταξινομήθηκαν με βάση τη ζύμωση των σακχάρων και την SDS-PAGEτων πρωτεϊνών του όλου κυττάρου και βρέθηκε ότι ανήκουν στα είδη Lb.plantarum,Lb.paraplantarum, Lb.rhamnosus, Lb.pentosus και Lb.paracasei subsp.paracasei.Τα στελέχη ετεροζυμωτικών γαλακτικών βακτηρίων ταξινομήθηκαν με βάση τη ζύμωση τωνσακχάρων στα είδη Lb.brevis, Lb.fermentum, Lb.confusus και Lb.buchneri. Η φαινοτυπικήταξινόμηση επιβεβαιώθηκε για τρία στελέχη με την SDS-PAGE, ενώ τα υπόλοιπα ομαδοποιούνταιμεταξύ τους με μεγάλο συντελεστή ομολογίας, όχι όμως και με κάποιο από τα πρότυπα στελέχη.Οχτώ στελέχη παρήγαγαν αντιμυκητιακές ουσίες που αναχαίτιζαν τη ζύμη αναφοράς D.hansenii,καθώς και ένα πενικίλλιο και από τον έλεγχο της φύσης τους φαίνεται ότι πρόκειται γιαβακτηριοσίνες.Ποσοστό 90% των στελεχών παρήγαγε μεθανοθειόλη από μεθειονίνη που σημαίνει ότισυνεισφέρουν στο άρωμα των τυριών.
description: The ability of chosen LAB strains to produce antifungal and antibacterial substances capable toinhibit the growth of fungi and yeasts present in greek dairy products and the growth of pathogensand other microorganisms, was studied.The majority of the strains had a wide inhibition specrum, inhibiting fungi, yeasts and pathogenmicroorganisms. Strains of interest characterized based on sugar fermentation patterns and SDSPAGEof whole cell protein, were found to belong to spieces Lb.plantarum, Lb.paraplantarum,Lb.rhamnosus, Lb.pentosus and Lb.paracasei subsp.paracasei.Srains of heterofermentative LAB characterized based on sugar fermentation patterns were found tobelong to spieces Lb.brevis, Lb.fermentum, Lb.confusus and Lb.buchneri.The phenotypic characteristics of the strains were confirmed by the SDS-PAGE for three strains,while the other strains group together with high correlation level but not with the reference strains.Eight strains produced antifungal substances which inhibit the yeast D.hansenii, as well as onepenicillium whereas based on their nature they were supposed to be bacteriocins.90% percent of the strains produced methanothiol from methionine, which conrtibutes to theperfume of the cheeses.
LANGUAGE AND ETHNIC COMMUNITY: HISTORICAL ASPECT
Creators: name: Smaglo, N.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: ethnic communities
self-consciousness
nationality
self-organization
culture
internationalism
assimilation
gender
tribe
ethnogenesis
social interaction
ethnic conflict.

description: Each era has its own needs, raises its own problems, sets its own requirements, adequate to the political atmosphere, the goal that society currently defines for itself. Suffice it to say: language is a means of human communication, and even a form of existence, even the very existence of an ethnos (nation). And if the peculiarity of the Ukrainian ethnos is its universality, then this universality is fully embodied and expressed only by language. That is, there is a language there is a people. For many centuries, the Ukrainian people have been creating their own spiritual environment, filling it with their own unique images. In fact, the inner world of Ukrainians was formed, the whole surrounding space was comprehended, worldview principles were laid down. The phenomenon of ethnic communities as specific social groups that determine the direction of development of society, form its cultural diversity and promote human self-determination in the system of social relations. It is stated that the formation of such communities is the result of the common language, common history, special features of the ethnos. It is noted that sociology is actively exploring the mechanisms of functioning of ethnic communities, as the future of the whole nation depends on their further interaction.
Ultrahigh Energy Tau Neutrinos
Creators: name: Jones, J.
name: Mocioiu, I.
name: Reno, M. H.
name: Sarcevic, I
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study ultrahigh energy astrophysical neutrinos and the contribution of tau neutrinos from neutrino oscillations, relative to the contribution of the other flavors. We show the effect of tau neutrino regeneration and tau energy loss as they propagate through the Earth. We consider a variety of neutrino fluxes, such as cosmogenic neutrinos and neutrinos that originate in Active Galactic Nuclei. We discuss signals of tau neutrinos in detectors such as IceCube, RICE and ANITA.
description: Invited talk given at the ``8th Workshop on Non-Perturbative Quantum Chromodynamics", June 7-11, 2004, Paris, France; 10 pages, 6 figures
RESEARCH OF SOCIOLINGUISTIC ASPECTS IN TEACHING BUSINESS FOREIGN LANGUAGE FOR STUDENTS OF AGRARIAN BRANCH
Creators: name: Vlasyuk, J.
Publisher: name: The Scientific Heritage
Year: 2021
Subjects: master’s students
business communication culture
technology
the humanities
professionally oriented foreign language training
specialists
scientific authentic training material
professional foreign language communication.

description: The article deals with the results of the theoretical and methodological research of the issue of the formation of business communication culture of master students while studying the humanities in agrarian universities. Because of humanization of higher education nowadays, there is an urgent need to improve the professional training of agrarian master students, especially its cultural and communicative components. Therefore, the problem of the development of the appropriate pedagogical technology becomes important in the system of professional training of agrarian master students. The aim of the article is to work out and describe the technology of the formation of business communication culture of agrarian master students while studying the humanities in Ukrainian universities. On the basis of the analysis of the current scientific sources the authors have identified the concept of the technology of the formation of business communication culture of agrarian master students while studying the humanities. This term refers to an organization of the purposeful, structural, integral and learner-centered process of the formation of motivation, values, knowledge and skills that provide students with an advanced level of business communication culture. This technology consists of such blocks as planning (purpose, tasks, principles and approaches); content (development of motivation and values; a complex of basic skills and knowledge); organization and methods (stages); reflection and result. The course "Business Communication Culture for Agrarian Master Students’ is a significant stage in the process of the formation of business communication culture of agrarian master students, since it improves the humanitarian training of agrarian specialists and extends students" knowledge of communication psychology and business etiquette
Tracing the evolution in the iron content of the ICM
Creators: name: Balestra, I.
name: Tozzi, P.
name: Ettori, S.
name: Rosati, P.
name: Borgani, S.
name: Mainieri, V.
name: Norman, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a Chandra analysis of the X-ray spectra of 56 clusters of galaxies at z>0.3, which cover a temperature range of 3>kT>15 keV. Our analysis is aimed at measuring the iron abundance in the ICM out to the highest redshift probed to date. We find that the emission-weighted iron abundance measured within (0.15-0.3)R_vir in clusters below 5 keV is, on average, a factor of ~2 higher than in hotter clusters, following Z(T)~0.88T^-(0.47)Z_o, which confirms the trend seen in local samples. We made use of combined spectral analysis performed over five redshift bins at 0.3>z>1.3 to estimate the average emission weighted iron abundance. We find a constant average iron abundance Z_Fe~0.25Z_o as a function of redshift, but only for clusters at z>0.5. The emission-weighted iron abundance is significantly higher (Z_Fe~0.4Z_o) in the redshift range z~0.3-0.5, approaching the value measured locally in the inner 0.15R_vir radii for a mix of cool-core and non cool-core clusters in the redshift range 0.1
description: 6 pages, 6 figures, to appear in the Proceedings of "Heating vs. Cooling in Galaxies and Clusters of Galaxies", August 2006, Garching (Germany)
A low [CII]/[NII] ratio in the center of a massive galaxy at z=3.7: witnessing the transition to quiescence at high-redshift?
Creators: name: Schreiber, C.
name: Glazebrook, K.
name: Papovich, C.
name: Diaz-Santos, T.
name: Verma, A.
name: Elbaz, D.
name: Kacprzak, G. G.
name: Nanayakkara, T.
name: Oesch, P.
name: Pannella, M.
name: Spitler, L.
name: Straatman, C.
name: Tran, K. -V.
name: Wang, T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Understanding the process of quenching is one of the major open questions in galaxy evolution, and crucial insights may be obtained by studying quenched galaxies at high redshifts, at epochs when the Universe and the galaxies were younger and simpler to model. However, establishing the degree of quiescence in high redshift galaxies is a challenging task. One notable example is Hyde, a recently discovered galaxy at z=3.709. As compact (r~0.5 kpc) and massive (M*~1e11 Msun) as its quenched neighbor Jekyll, it is also extremely obscured yet only moderately luminous in the sub-millimeter. Panchromatic modeling suggested it could be the first galaxy found in transition to quenching at z>3, however the data were also consistent with a broad range of star-formation activity, including moderate SFR in the lower scatter of the galaxy main-sequence (MS). Here, we describe ALMA observations of the [CII] 157um and [NII] 205um far-infrared emission lines. The [CII] emission within the half-light radius is dominated by ionized gas, while the outskirts are dominated by PDRs or neutral gas. This suggests that the ionization in the center is not primarily powered by on-going star formation, and could come instead from remnant stellar populations formed in an older burst, or from a moderate AGN. Accounting for this information in the multi-wavelength modeling provides a tighter constraint on the star formation rate of SFR=$50^{+24}_{-18}$ Msun/yr. This rules out fully quenched solutions, and favors SFRs more than factor of two lower than expected for a galaxy on the MS, confirming the nature of Hyde as a transition galaxy. Theses results suggest that quenching happens from inside-out, and starts before the galaxy expels or consumes all its gas reservoirs. Similar observations of a larger sample would determine whether this is an isolated case or the norm for quenching at high-redshift. [abriged]
description: Accepted for publication in A&A. 14 pages, 9 figures
Reappraisal of Blood Lead Levels and Relation to Delta-Aminolevulinic Acid Dehydratase, Zinc Protoporphyrin and Urinary ALA Level in Thai Normal Adults and Lead Exposed Workers
Creators: name: Watcharachai Rujirojkul
name: Thanomsak Boonphakdee
name: Vipoosit Muntanachitra
name: Voravit Cheevaporn
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2008
Subjects: blood lead level,delta-aminolevulinic acid dehydratase,zinc protoporphyrin,urinary aminolevulinic acid

description: 1, 1, EnvironmentAsia
Recycling qubits in near-term quantum computers
Creators: name: Anikeeva, Galit
name: Kim, Isaac H.
name: Hayden, Patrick
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum computers are capable of efficiently contracting unitary tensor networks, a task that is likely to remain difficult for classical computers. For instance, networks based on matrix product states or the multi-scale entanglement renormalization ansatz (MERA) can be contracted on a small quantum computer to aid the simulation of a large quantum system. However, without the ability to selectively reset qubits, the associated spatial cost can be exorbitant. In this paper, we propose a protocol that can unitarily reset qubits when the circuit has a common convolutional form, thus dramatically reducing the spatial cost for implementing the contraction algorithm on general near-term quantum computers. This protocol generates fresh qubits from used ones by partially applying the time-reversed quantum circuit over qubits that are no longer in use. In the absence of noise, we prove that the state of a subset of these qubits becomes $|0\ldots 0\rangle$, up to an error exponentially small in the number of gates applied. We also provide a numerical evidence that the protocol works in the presence of noise. We also provide a numerical evidence that the protocol works in the presence of noise, and formulate a condition under which the noise-resilience follows rigorously.
description: 7+4 pages, 9 figures. Corollary A.2 fixed. Also, the mathematical statement about noise-resilience is added
Η οχυρωματική δραστηριότητα στην αρχαία Μακεδονία
Creators: name: Δούριου, Ευμορφία Θεόδωρου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Οχύρωση
Τειχισμένος οικισμός
Φρούριο
Λίθινο τείχος
Πλίνθινο τείχος
Πολιορκητική τέχνη
Fortification
Fortified settelment
Fortress
Stone wall
Clay wall
Siege craft

description: Κατά τον 6ο και 5ο αι. π.Χ. απουσιάζουν οι οχυρώσεις από τον ηπειρωτικό μακεδονικό κορμό ενώ αντίθετα ισχυρή οχυρωματική δραστηριότητα έχουν να επιδείξουν την εποχή αυτή οι αποικίες της νότιας Ελλάδας στα παράλια της Χαλκιδικής και της Ανατολικής Μακεδονίας. Με την ενοποίηση του μακεδονικού βασιλείου από τα μέσα του 4ου αι. π.Χ. και την ανάδειξη του σε κυρίαρχη στρατιωτική δύναμη, παρατηρείται έντονη οχυρωματική δραστηριότητα που κορυφώνεται κατά την πρώϊμη ελληνιστική περίοδο, στα τέλη του 4ου αι. π.Χ. με αρχές του 3ου αι. π.Χ. Τότε τειχίζονται οι σπουδαιότερες μακεδονικές πόλεις όπως το Δίον, η Πέλλα, η Βεργίνα, η Βέροια, η Θεσσαλονίκη κ.τ.λ. Από την κυρίως ελληνιστική εποχή και μετά οι οχυρώσεις μειώνονται ενώ από τα μέσα του 2ου αι. π.Χ. με την κατάλυση του μακεδονικού βασιλείου από τους Ρωμαίους, βαθμιαία εγκαταλείπονται και καταστρέφονται.
description: In 6th and 5th c.B.C. there are not fortifications in the mainland of Macedonia. In contrary, many colonies of the southern greecsities erect monumental fortifications in the Macedonian seaside, in Chalcidice and eastern Macedonia. After the unification of macedonian kingdom in the middle of the 4th c.B.C. and its military predominance over the greec cities-states, an intense fortification activity is taken place all over Macedonia. At that time the most important macedonian cities are fortified, such as Pella, Dion, Beroia, Thessaloniki etc. In the middle of the 2th c. B.C., after the Roman domination and occupation the macedonian fortifications are gradually being abandoned and destroyed.
Ο θρησκευτικός χαρακτήρας της μουσουλμανικής μειονότητας της Δ. Θράκης και η εκπαίδευσή της στα πλαίσια του ελληνικού κράτους
Creators: name: Παπαργυρίου, Ολγα Ηρακλή
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Μουσουλμανική μειονότητα Δ. θράκης
Τουρκογενείς-Πομάκοι-Αθίγγανοι
Ισλάμ και μειονότητα Δ. Θράκης
Μειονοτική εκπαίδευση Δ. Θράκης
Μειονοτικά σχολεία Δ. Θράκης
Western Thrace
Islamic minority
Minority education
Minority schools

description: Η εργασία διαπραγματεύεται θέματα που αφορούν στη θρησκεία της μειονότητας της Δ. Θράκης κατά πόσο αυτή επηρεάζει την παρεχόμενη εκπαίδευση, επίσης θέματα που αφορούν στην εκπαίδευση της μειονότητας. Ειδικότερα, γίνεται ιστορική αναδρομή των σημαντικότερων εκπ/κών γεγονότων της μειονοτικής εκπ/σης και έκθεση της σημερινής πραγματικότητας στο χώρο της λειτουργίας της εκπ/σης. Τα κεφάλαια που απαρτίζουν την εργασία είναι τέσσερα. Ακολουθούν συμπεράσματα και προτάσεις για τη βελτίωση της εκπ/σης στη Δ. Θράκη.
description: The discours deals with matters pertaining to the religion of the islamic minority in western Thrace focusing on issues affecting the provided education. More specifically the most significant historical facts on islamic Minority education in western Thrace are referenced in retrospection and the present actuality of applied education is presented, followed by conclusions and suggestions on upgrading provided education in minority schools.
Η κατοικία σε περιοχές της ανατολικής Θεσσαλονικής: στατιστική επεξεργασία αγγελιών, συμπεράσματα και αξιολόγησή τους
Creators: name: Παναγιωτίδης, Θεοκλής Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Αγγελίες
Κατοικία
Αγορά ακινήτων
Θεσσαλονίκη
Advertisements
Residence
Real estate
Thessaloniki

description: Από στατιστικό δείγμα, 4061 εγγραφών, που αφορούσε αγγελίες πωλήσεων και ενοικιάσεων 3 περιοχών της Ανατολικής Θεσσαλονίκης, το διάστημα 2000-2007 έγινε στατιστική επεξεργασία με στόχο : 1)τον προσδιορισμό των παραγόντων που επηρεάζουν την τιμή τους, 2)την εξέλιξη των τιμών 2000-2007, 3)τον προσδιορισμό της απόδοσης σχετικής επένδυσης
description: From a statistical sample of 4061 entries, regarding the classified ads for rental or sale of 3 areas of Eastern Thessaloniki, during the period 2000-2007, statistical processing was carried out in order to define : 1)The factors affecting their price, 2)The progress of prices during the period 2000-2007, 3)The return rate of the relevant investment
Flat fronts in hyperbolic 3-space and their caustics
Creators: name: Kokubu, Masatoshi
name: Rossman, Wayne
name: Umehara, Masaaki
name: Yamada, Kotaro
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C42; 53A35

description: After Galvez, Martinez and Milan discovered a (Weierstrass-type) holomorphic representation formula for flat surfaces in hyperbolic 3-space, the first, third and fourth authors here gave a framework for complete flat fronts with singularities in H^3. In the present work we broaden the notion of completeness to weak completeness, and of front to p-front. As a front is a p-front and completeness implies weak completeness, the new framework and results here apply to a more general class of flat surfaces. This more general class contains the caustics of flat fronts -- shown also to be flat by Roitman (who gave a holomorphic representation formula for them) -- which are an important class of surfaces and are generally not complete but only weakly complete. Furthermore, although flat fronts have globally defined normals, caustics might not, making them flat fronts only locally, and hence only p-fronts. Using the new framework, we obtain characterizations for caustics.
description: 26 pages, 5 figures
Dyson-Maleev representation of nonlinear sigma-models
Creators: name: Ivanov, D. A.
name: Skvortsov, M. A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: For nonlinear sigma-models in the unitary symmetry class, the non-linear target space can be parameterized with cubic polynomials. This choice of coordinates has been known previously as the Dyson-Maleev parameterization for spin systems, and we show that it can be applied to a wide range of sigma-models. The practical use of this parameterization includes simplification of diagrammatic calculations (in perturbative methods) and of algebraic manipulations (in non-perturbative approaches). We illustrate the use and specific issues of the Dyson-Maleev parameterization with three examples: the Keldysh sigma-model for time-dependent random Hamiltonians, the supersymmetric sigma-model for random matrices, and the supersymmetric transfer-matrix technique for quasi-one-dimensional disordered wires. We demonstrate that nonlinear sigma-models of unitary-like symmetry classes C and B/D also admit the Dyson-Maleev parameterization.
description: 16 pages, 1 figure
Observations of a radio-bright, X-ray obscured GRS 1915+105
Creators: name: Motta, S. E.
name: Kajava, J. J. E.
name: Giustini, M.
name: Williams, D. R. A.
name: Del Santo, M.
name: Fender, R.
name: Green, D. A.
name: Heywood, I.
name: Rhodes, L.
name: Segreto, A.
name: Sivakoff, G.
name: Woudt, P. A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The Galactic black hole transient GRS1915+105 is famous for its markedly variable X-ray and radio behaviour, and for being the archetypal galactic source of relativistic jets. It entered an X-ray outburst in 1992 and has been active ever since. Since 2018 GRS1915+105 has declined into an extended low-flux X-ray plateau, occasionally interrupted by multi-wavelength flares. Here we report the radio and X-ray properties of GRS1915+105 collected in this new phase, and compare the recent data to historic observations. We find that while the X-ray emission remained unprecedentedly low for most of the time following the decline in 2018, the radio emission shows a clear mode change half way through the extended X-ray plateau in 2019 June: from low flux (~3mJy) and limited variability, to marked flaring with fluxes two orders of magnitude larger. GRS1915+105 appears to have entered a low-luminosity canonical hard state, and then transitioned to an unusual accretion phase, characterised by heavy X-ray absorption/obscuration. Hence, we argue that a local absorber hides from the observer the accretion processes feeding the variable jet responsible for the radio flaring. The radio-X-ray correlation suggests that the current low X-ray flux state may be a signature of a super-Eddington state akin to the X-ray binaries SS433 or V404 Cyg.
description: 10 pages, 5 figures. Accepted for publication on MNRAS
The electronic structure of liquid water within density functional theory
Creators: name: Prendergast, David
name: Grossman, Jeffrey C.
name: Galli, Giulia
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: In the last decade, computational studies of liquid water have mostly concentrated on ground state properties. However recent spectroscopic measurements have been used to infer the structure of water, and the interpretation of optical and x-ray spectra requires accurate theoretical models of excited electronic states, not only of the ground state. To this end, we investigate the electronic properties of water at ambient conditions using ab initio density functional theory within the generalized gradient approximation (DFT/GGA), focussing on the unoccupied subspace of Kohn-Sham eigenstates. We generate long (250 ps) classical trajectories for large supercells, up to 256 molecules, from which uncorrelated configurations of water molecules are extracted for use in DFT/GGA calculations of the electronic structure. We find that the density of occupied states of this molecular liquid is well described with 32 molecule supercells using a single k-point (k = 0) to approximate integration over the first Brillouin zone. However, the description of the density of unoccupied states (u-EDOS) is sensitive to finite size effects. Small, 32 molecule supercell calculations, using Gamma-the point approximation, yield a spuriously isolated state above the Fermi level. Nevertheless, the more accurate u-EDOS of large, 256 molecule supercells may be reproduced using smaller supercells and increased k-point sampling. This indicates that the electronic structure of molecular liquids like water is relatively insensitive to the long-range disorder in the molecular structure. These results have important implications for efficiently increasing the accuracy of spectral calculations for water and other molecular liquids.
description: 12 pages, 11 figures (low quality) Submitted to JChemPhys
Majorants of meromorphic functions with fixed poles
Creators: name: Baranov, Anton
name: Borichev, Alexander
name: Havin, Victor
Publisher: name: arXiv
Year: 2006
Subjects: subject: Complex Variables (math.CV)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 30D (primary), 46E (secondary)

description: Let $B$ be a meromorphic Blaschke product in the upper half-plane with zeros $z_n$ and let $K_B=H^2\ominus BH^2$ be the associated model subspace of the Hardy class. In other words, $K_B$ is the space of square summable meromorphic functions with the poles at the points $\bar z_n$. A nonnegative function $w$ on the real line is said to be an admissible majorant for $K_B$ if there is a non-zero function $f\in K_B$ such that $|f|\le w$ a.e. on $\mathbb{R}$. We study the relations between the distribution of the zeros of a Blaschke product $B$ and the class of admissible majorants for the space $K_B$.
description: 32 pages
A comparison study of extrapolation models and empirical relations in forecasting solar wind
Creators: name: Kumar, Sandeep
name: Paul, Arghyadeep
name: Vaidya, Bhargav
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Coronal mass ejections (CMEs) and high speed solar streams serve as perturbations to the background solar wind that have major implications in space weather dynamics. Therefore, a robust framework for accurate predictions of the background wind properties is a fundamental step towards the development of any space weather prediction toolbox. In this pilot study, we focus on the implementation and comparison of various models that are critical for a steady state, solar wind forecasting framework. Specifically, we perform case studies on Carrington rotations 2053, 2082 and 2104, and compare the performance of magnetic field extrapolation models in conjunction with velocity empirical formulations to predict solar wind properties at Lagrangian point L1. Two different models to extrapolate the solar wind from the coronal domain to the inner-heliospheric domain are presented, namely, (a) Kinematics based (Heliospheric Upwind eXtrapolation [HUX]) model and (b) Physics based model. The physics based model solves a set of conservative equations of hydrodynamics using the PLUTO code and can additionally predict the thermal properties of solar wind. The assessment in predicting solar wind parameters of the different models is quantified through statistical measures. We further extend this developed framework to also assess the polarity of inter-planetary magnetic field at L1. Our best models for the case of CR2053 gives a very high correlation coefficient ($\sim$ 0.73-0.81) and has an root mean square error of ($\sim$ 75-90 kms$^{-1}$). Additionally, the physics based model has a standard deviation comparable with that obtained from the hourly OMNI solar wind data and also produces a considerable match with observed solar wind proton temperatures measured at L1 from the same database.
description: 23 pages, 10 figures, Accepted in Frontiers
Universal relationship between crystallinity and irreversibility field of MgB2
Creators: name: Yamamoto, A.
name: Shimoyama, J.
name: Ueda, S.
name: Katsura, Y.
name: Iwayama, I.
name: Horii, S.
name: Kishio, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The relationship between irreversibility field, Hirr, and crystallinity of MgB2 bulks including carbon substituted samples was studied. The Hirr was found to increase with an increase of FWHM of MgB2 (110) peak, which corresponds to distortion of honeycomb boron sheet, and their universal correlation was discovered even including carbon substituted samples. Excellent Jc characteristics under high magnetic fields were observed in samples with large FWHM of (110) due to the enhanced intraband scattering and strengthened grain boundary flux pinning. The relationship between crystallinity and Hirr can explain the large variation of Hirr for MgB2 bulks, tapes, single crystals and thin films.
description: 3 pages, 4 figures, to be published in Appl. Phys. Lett. (in press)
Construction of a generalization of the Leibnitz numbers and their properties
Creators: name: Simsek, Yilmaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 05A15, 11B65, 11B83, 11S80, 26C05, 33B15

description: The aim of this paper is to give a novel generalization of the Leibnitz numbers derived from application of the Beta function to the modification for the Bernstein basis functions. We also give some properties of the Leibnitz numbers with the aid of their generating functions derived from the Volkenborn integral on the set of $p$-adic integers. We also give some novel identities and relations involving the Leibnitz numbers, the Daehee numbers, the Changhee numbers, inverse binomial coefficients, and combinatorial sums. Finally, by coding computation formula for the generalization of the Leibnitz numbers in Mathematica 12.0 with their implementation, we compute few values of these numbers with their tables. Finally, by using the applications of Volkenborn integral to Mahler coefficients, we derive some novel formulas involving the Leibnitz numbers.
Studies of interactions among cultured ericoid mycorrhizal fungi of salal (gaultheria shallon pursh)
Creators: name: Nafar, Firoozeh
Publisher: name: University of British Columbia
Year: 2009

description: This thesis compares molecular and cultural methods for the detection and identification of the fungal partners of mixed in vitro mycorrhizae of salal. Mixed in vitro mycorrhizae were synthesized by inoculating salal with pairs of three different fungi in all possible combinations. The fungi were sterile isolates S246 and S9, and Oidiodendron griseum. Mycorrhizae formed after three to four months and the fungi in the mycorrhizal roots were detected by (1) re-isolation and morphological identification of the cultured fungi and (2) direct polymerase chain reaction (PCR) amplification of the ribosomal internal transcribed spacer regions using primers ITS1-F and ITS4, followed by restriction fragment length polymorphism (RFLP) identification. The detection results from the synthesized mycorrhizae were compared with PCR/RFLP detection from mixtures of fungal DNAs at known concentrations. The O. griseum. DNA could not be detected at any concentration when it was combined with DNA from either S9 or S246, indicating a PCR bias against O. griseum. This bias explained why O. griseum never appeared in the RFLP patterns from amplified DNA from synthesized mycorrhizae despite being re-isolated from 71% of the root segments. The RFLPs proved useful in clearly indicating mixtures of the two sterile isolates, especially because mixtures of sterile isolates were difficult to recognize based on morphology. This thesis also compared culture and PCR/RFLP methods to identify ericoid mycorrhizal fungi colonizing mapped roots. Two mycorrhizal fungi often occupied the same 5 mm segment of a salal root. From the roots located under both inocula with the same chance for colonization, 70% of the cultures recovered were mixed cultures when a sporulating and sterile fungi were used as inoculum. The three ericoid mycorrhizal fungi mentioned above were paired in culture to look at their competitive abilities. All pairings showed deadlock, an inability of the paired species to invade the territory occupied by the other one. For better observation of the colonized roots within the agar medium, phytagel was substituted by granulated agar. Phytagel improved the clarity of the gel and significantly improved the shoot growth of salal; the percent root colonization did not show any significant difference.
Transcription of a story about finding a rat on the road
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2021
Subjects: subject: hup

description: Audio file VP-300120-03: Transcription of a story about finding a rat on the road, file VP-020214-03, from the beginning to the end of the file.
Survival probability in diffractive Higgs production in high density QCD
Creators: name: Miller, Jeremy S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, the contribution of hard processes described by the BFKL pomeron exchange, is taken into account by calculating the first enhanced diagram. The survival probability is estimated, using the ratio of the first enhanced diagram and the single pomeron amplitude, taking into account all essential pomeron loop diagrams in the toy model of Mueller. The triple pomeron vertex is calculated explicitly in the momentum representation. This calculation is used for estimating the survival probability, It turns out that the survival probability is small, at $0.4%{}$. Hard pomeron re-scattering processes contribute substantially to the survival probability.
description: 28 pages, 7 figures
Αναδρομές μιγαδικών πολυωνυμικών συναρτήσεων-Σύνολα Julia
Creators: name: Τσομίδης, Ανέστης Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2007
Subjects: Αναδρομή
Τροχιά
Ελκτικό σημείο
Ουδέτερο σημείο
Απωθητικό σημείο
Ψευδόκυκλος
Iteration
Orbit
Mandelbrot
Julia
Fatou
Hausdorff

description: Η εργασία αυτή περιλαμβάνει μια γενική θεωρία για τα σύνολα Julia ιγαδικών πολυωνυμικών συναρτήσεων και μια μελέτη του συνόλου Mandelbrot, το οποίο χρησιμέυει για μια κατάταξη των συνόλων Julia της fc(2)=z2+c. Γίνεται αναφορά στο μέτρο και τη διάσταση Hansdorff, με τη βοήθεια της οποίας γίνεται χαρακτηρισμός των ψευδόκυκλων.
description: This thesis includes a general theory for Julia sets of complex polynomials and some theorems about the Mandelbrot set, which can be used as map for the Julia sets of the fc(z)=z2+c. Also, there are some results about Hansdorff measure and dimension. By Hausdorff dimension we can characterize quasi-circles.