cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An iterative ILP approach for constructing a Hamiltonian decomposition of a regular multigraph
Creators: name: Kostenko, Andrey
name: Nikolaev, Andrei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C85, 90C10, 90C57, 52B05

description: A Hamiltonian decomposition of a regular graph is a partition of its edge set into Hamiltonian cycles. The problem of finding edge-disjoint Hamiltonian cycles in a given regular graph has many applications in combinatorial optimization and operations research. Our motivation for this problem comes from the field of polyhedral combinatorics, as a sufficient condition for vertex nonadjacency in the 1-skeleton of the traveling salesperson polytope can be formulated as the Hamiltonian decomposition problem in a 4-regular multigraph with one forbidden decomposition. In our approach, the algorithm starts by solving the relaxed 2-matching problem, then iteratively generates subtour elimination constraints for all subtours in the solution and solves the corresponding ILP-model to optimality. The procedure is enhanced by the local search heuristic based on chain edge fixing and cycle merging operations. In the computational experiments, the iterative ILP algorithm showed comparable results with the previously known heuristics on undirected multigraphs and significantly better performance on directed multigraphs.
Kinetic roughening and nontrivial scaling in the Kardar-Parisi-Zhang growth with long-range temporal correlations
Creators: name: Song, Tianshu
name: Xia, Hui
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Long-range spatiotemporal correlations may play important roles in nonequilibrium surface growth process. In order to investigate the effects of long-range temporal correlation on dynamic scaling of growing surfaces, we perform extensive numerical simulations of the (1+1)- and (2+1)-dimensional Kardar-Parisi-Zhang (KPZ) growth system in the presence of temporally correlated noise, and compare our results with previous theoretical predictions and numerical simulations. We find that surface morphologies are obviously affected with long-range temporal correlations, and as the temporal correlation exponent increases, the KPZ surfaces develop gradually faceted patterns in the saturated growth regimes. Our results show that the temporal correlated KPZ system displays evidently nontrivial dynamic properties when $0
description: 30 pages,12 figures
Synchronization of Mutually Versus Unidirectionally Coupled Chaotic Semiconductor Lasers
Creators: name: Gross, Noam
name: Kinzel, Wolfgang
name: Kanter, Ido
name: Rosenbluh, Michael
name: Khaykovich, Lev
Publisher: name: arXiv
Year: 2006
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Synchronization dynamics of mutually coupled chaotic semiconductor lasers are investigated experimentally and compared to identical synchronization of unidirectionally coupled lasers. Mutual coupling shows high quality synchronization in a broad range of self-feedback and coupling strengths. It is found to be tolerant to significant parameter mismatch which for unidirectional coupling would result in loss of synchronization. The advantages of mutual coupling are emphasized in light of its potential use in chaos communications.
description: 5 pages, 6 figures
Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO$_{1-x}$F$_x$}
Creators: name: Kuroki, Kazuhiko
name: Onari, Seiichiro
name: Arita, Ryotaro
name: Usui, Hidetomo
name: Tanaka, Yukio
name: Kontani, Hiroshi
name: Aoki, Hideo
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: For a newly discovered iron-based high $T_c$ superconductor LaFeAsO$_{1-x}$F$_x$, we have constructed a minimal model, where inclusion of all the five Fe $d$ bands is found to be necessary. Random-phase approximation is applied to the model to investigate the origin of superconductivity. We conclude that the multiple spin fluctuation modes arising from the nesting across the disconnected Fermi surfaces realize an extended s-wave pairing, while d-wave pairing can also be another candidate.
description: 5 pages, 2 figures, to be published in Phys. Rev. Lett
Το πορτρέτο της εποχής του Τραϊανού στην Ελλάδα
Creators: name: Τασοπούλου, Μαρία Γεωργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Πορτρέτα
Τραϊανού
Portraits
Trajan

description: Η παρούσα διατριβή συγκεντρώνει τα αυτοκρατορικά και ιδιωτικά ολόγλυφα πορτρέτα της εποχής του Τραϊανού από τη σημερινή ελληνική επικράτεια. Συνολικά εξετάστηκαν 59 πορτρέτα, από τα οποία τα 15 παριστάνουν τον Τραϊανό και τα υπόλοιπα 44 είναι ιδιωτικά. Το πρώτο κεφάλαιο, στο οποίο εξετάζονται τα αυτοκρατορικά πορτρέτα, είναι αφιερωμένο αποκλειστικά στη μελέτη των πορτρέτων του Τραϊανού, καθώς δεν σώζονται πορτρέτα από τον ελλαδικό χώρο που να παριστάνουν τη σύζυγο του Τραϊανού Πομπηία Πλωτίνα, την αδερφή του Ουλπία Μαρκιανή και την ανιψιά του Σαλωνία Ματίδια. Εξετάζονται αρχικά οι εικονιστικοί τύποι του Τραϊανού και στη συνέχεια ακολουθεί η τυπολογική κατάταξη των πορτρέτων του Τραϊανού από την Ελλάδα. Στο δεύτερο κεφάλαιο εξετάζονται ξεχωριστά τα ανδρικά, τα γυναικεία και τα παιδικά πορτρέτα και διακρίνονται σε ομάδες και υποομάδες με βάση τυπολογικά κριτήρια. Το τρίτο κεφάλαιο αποτελεί μία σύντομη επισκόπηση των πορτρέτων της εποχής του Τραϊανού από την Ελλάδα με βάση την προέλευσή τους
description: This thesis gathers the imperial and private portrait sculptures in the round of the Trajanic era that were found in Greece. In total, 59 portraits were studied, out of which 15 depict Trajan, while the remaining 44 are private portraits. The first chapter, in which the imperial portraits are examined, is dedicated to the study of Trajan’s portraits since there are no portraits from Greece that depict Trajan’s wife Pompeia Plotina, his sister Ulpia Markiana or his niece Salonia Matidida. Trajan’s portraits types are examined first, followed by the typological classification of the ones that were found in Greece. In the second chapter, the private portraits of men, women and children are examined separately, divided into groups and subgroups based on typological criteria. The third chapter is a brief overview of the Greek Trajanic portraits based on their provenance
A mechanical analog of Bohr's atom based on de Broglie's double-solution approach
Creators: name: Jamet, Pierre
name: Drezet, Aurélien
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Motivated by recent developments of hydrodynamical quantum mechanical analogs [J. W. M. Bush, Annu. Rev. Fluid Mech. 47, 269-292 (2015)] we provide a relativistic model for a classical particle coupled to a scalar wave-field through a holonomic constraint. In presence of an external Coulomb field we define a regime where the particle is guided by the wave in a way similar to the old de Broglie phase-wave proposal. Moreover, this dualistic mechanical analog of the quantum theory is reminiscent of the double-solution approach suggested by de Broglie in 1927 and is able to reproduce the Bohr-Sommerfeld semiclassical quantization formula for an electron moving in a atom.
description: 15 pages
Coleção Amarante-Monserrat de Materiais Linguísticos da Língua Mỹky e Outras
Creators: name: Irawali, Alonso
name: Mỹky, Atusi
name: Mỹky, Janaxi
name: Mỹky, Japaatau
name: Mỹky, Kamunu
name: Mỹky, Kiwuxi
name: Mỹky, Marikau
name: Mỹky, Wajakuxi
name: Mỹky, Xinuxi
name: Mỹky, Yurusi
name: Nãpjoku, Bartolo
name: Monserrat, Ruth
name: Rondon Amarante, Elizabeth
name: Bardagil Mas, Bernat
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2024

description: Gravações de vocabulário, frases, histórias, músicas e outros eventos, principalmente em Mỹky. Dois itens (2023-23.001 e 2023-23.002) contêm gravações de Nambikwara e Munduruku, respectivamente.
Το Κόμμα των Φιλελευθέρων, Οκτώβριος 1944 – Σεπτέμβριος 1947: Από την Απελευθέρωση στην Κυβέρνηση
Creators: name: Λιάγκα, Μαργαρίτα Αναστασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Κόμμα των Φιλελευθέρων
Ελληνικός Εμφύλιος Πόλεμος
Θεμιστοκλής Σοφούλης
Liberal Party
Greek Civil War
Themistocles Sofoulis

description: Η παρούσα μελέτη επιχειρεί να καταγράψει την πορεία του Κόμματος των Φιλελευθέρων την περίοδο από την Απελευθέρωση της Αθήνας από τις γερμανικές αρχές Κατοχής, τον Οκτώβριο του 1944, μέχρι τον σχηματισμό κυβέρνησης συνεργασίας με το Λαϊκό Κόμμα, τον Σεπτέμβριο του 1947. Η εργασία είναι δομημένη χρονολογικά, εντός των κεφαλαίων υπάρχουν όμως και θεματικές υποενότητες με στόχο την ανάδειξη επιμέρους ζητούμενων. Κύριο στόχο αποτελεί η εξέταση της πολιτικής του κόμματος ως προς την εμφύλια σύγκρουση και η θέση του σε αυτή. Η ερμηνεία της εμφύλιας σύγκρουσης από το κόμμα και η ύπαρξη ή η απουσία προτάσεων για τον τερματισμό της, αποτελούν κύρια ερωτήματα της έρευνας. Παράλληλα, διερευνώνται οι εσωκομματικές διεργασίες και η απήχηση της πολιτικής του κόμματος σε επίπεδο στελεχών και βάσης. Επιπλέον, αναζητούνται οι πολιτικές θέσεις του για τα οικονομικά και κοινωνικά προβλήματα και οι διαφορές με τις προτάσεις των άλλων πολιτικών κομμάτων/δυνάμεων. Τέλος, εξετάζονται ο αντίκτυπος των προτάσεων του Κόμματος των Φιλελευθέρων και η κριτική προς αυτές στο εσωτερικό της χώρας, αλλά και στο εξωτερικό
description: The current dissertation attempts to record the policy of the Liberal Party of Greece, starting from the end of the Geman Occupation of Athens, October 1944, until the forming of the coalition goverment with the People’s Party, September 1947. The structure of the study is chronological, although there are thematic subchapters in order to highlight specific aspects of the party's policy. The main objective is to examine the party's policy towards the civil conflict and its position in it. The interpretation of the civil conflict by the party and whether there are any proposals aiming at its end are crucial questions of the study. At the same time, the inner – party processes and the impact of the party's policy among its members and its supporters are explored. In addition, the party's political views regarding the economic and social problems and the differences with the proposals by other political parties/forces are being sought. Finally, the impact of the Liberal Party's proposals and the criticism they receive within Greece and abroad are taken into consideration
Herbig Ae/Be Stars in the Magellanic Bridge
Creators: name: Nishiyama, Shogo
name: Haba, Yasuaki
name: Kato, Daisuke
name: Baba, Daisuke
name: Hatano, Hirofumi
name: Tamura, Motohide
name: Nakajima, Yasushi
name: Ishihara, Akika
name: Nagata, Tetsuya
name: Sugitani, Koji
name: Matsunaga, Noriyuki
name: Fukushi, Hinako
name: Kusakabe, Nobuhiko
name: Sato, Shuji
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have found Herbig Ae/Be star candidates in the western region of the Magellanic Bridge. Using the near infrared camera SIRIUS and the 1.4 m telescope IRSF, we surveyed about 3.0 deg x 1.3 deg (24 deg < RA < 36 deg, -75 deg < Dec. < -73.7 deg) in the J, H, and Ks bands. On the basis of colors and magnitudes, about 200 Herbig Ae/Be star candidates are selected. Considering the contaminations by miscellaneous sources such as foreground stars and early-type dwarfs in the Magellanic Bridge, we estimate that about 80 (about 40%) of the candidates are likely to be Herbig Ae/Be stars. We also found one concentration of the candidates at the young star cluster NGC 796, strongly suggesting the existence of pre-main-sequence (PMS) stars in the Magellanic Bridge. This is the first detection of PMS star candidates in the Magellanic Bridge, and if they are genuine PMS stars, this could be direct evidence of recent star formation. However, the estimate of the number of Herbig Ae/Be stars depends on the fraction of classical Be stars, and thus a more precise determination of the Be star fraction or observations to differentiate between the Herbig Ae/Be stars and classical Be stars are required.
description: 22 pages, 6 figures. Accepted for publication in ApJ
Trends in COVID-19 prevalence and mortality: a year in review
Creators: name: James, Nick
name: Menzies, Max
Publisher: name: arXiv
Year: 2021
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: This paper introduces new methods to study the changing dynamics of COVID-19 cases and deaths among the 50 worst-affected countries throughout 2020. First, we analyse the trajectories and turning points of rolling mortality rates to understand at which times the disease was most lethal. We demonstrate five characteristic classes of mortality rate trajectories and determine structural similarity in mortality trends over time. Next, we introduce a class of \emph{virulence matrices} to study the evolution of COVID-19 cases and deaths on a global scale. Finally, we introduce \emph{three-way inconsistency analysis} to determine anomalous countries with respect to three attributes: countries' COVID-19 cases, deaths and human development indices. We demonstrate the most anomalous countries across these three measures are Pakistan, the United States and the United Arab Emirates.
description: Equal contribution. Substantial edits and more discussion relative to v1
Infant feeding practices at HRH Princess Maha Chakri Sirindhorn Medical Center
Creators: name: Lakkana Rerksuppaphol, Sanguansak Rerksuppaphol
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2009
Subjects: Exclusive breastfeeding, infant feeding practice

description: 1, 16, Journal of Medicine and Health Sciences
Why polymer chains in a melt are not random walks
Creators: name: Wittmer, J. P.
name: Beckrich, P.
name: Johner, J.
name: Semenov, A. N.
name: Obukhov, S. P.
name: Meyer, H.
name: Baschnagel, J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A cornerstone of modern polymer physics is the `Flory ideality hypothesis' which states that a chain in a polymer melt adopts `ideal' random-walk-like conformations. Here we revisit theoretically and numerically this pivotal assumption and demonstrate that there are noticeable deviations from ideality. The deviations come from the interplay of chain connectivity and the incompressibility of the melt, leading to an effective repulsion between chain segments of all sizes $s$. The amplitude of this repulsion increases with decreasing $s$ where chain segments become more and more swollen. We illustrate this swelling by an analysis of the form factor $F(q)$, i.e. the scattered intensity at wavevector $q$ resulting from intramolecular interferences of a chain. A `Kratky plot' of $q^2F(q)$ {\em vs.} $q$ does not exhibit the plateau for intermediate wavevectors characteristic of ideal chains. One rather finds a conspicuous depression of the plateau, $δ(F^{-1}(q)) = |q|^3/32ρ$, which increases with $q$ and only depends on the monomer density $ρ$.
description: 4 pages, 4 figures, EPL, accepted January 2007
Θεός άνθρωπος κόσμος στον Εκκλησιαστή και στον Επίκουρο
Creators: name: Μισιάκα, Χριστίνα Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Εκκλησιαστής
Επίκουρος
Ελληνιστική εποχή
Ecclesiastes
Epicurus
Hellenistic period

description: Εφαλτήριο για την παρούσα εργασία αποτέλεσε το γεγονός ότι σημαντική μερίδα των ερευνητών τοποθετεί τον Εκκλησιαστή στην ελληνιστική εποχή και μάλιστα αναφέρεται σε επίδραση από την επικούρεια φιλοσοφία. Ως εκ τούτου, σκοπός της εργασίας υπήρξε η θεματική προσέγγιση του βιβλίου του Εκκλησιαστή και των έργων του φιλόσοφου Επίκουρου ώστε βάσει της κοινής θεματολογίας των κειμένων, να επιτευχθεί η γόνιμη σύγκριση. Αρχικά επιχειρήσαμε μια αναδρομή στην ιστορία της έρευνας σχετικά με τη χρονολόγηση, το συγγραφέα και τον τόπο συγγραφής του Εκκλησιαστή. Στη συνέχεια μας απασχόλησε το ζήτημα του Θεού, η κατοικία του και κατά πόσο η δραστηριότητά του αποτελεί ρυθμιστικό παράγοντα για την ανθρώπινη πραγματικότητα. Στο επόμενο κεφάλαιο ασχοληθήκαμε με τη θεώρηση της ζωής από τον Εκκλησιαστή και τον Επίκουρο. Μελετήσαμε θέματα όπως η γέννηση, ο σκοπός της ζωής, το πέρασμα από τη νεανική στη γεροντική ηλικία και η προοπτική του μέλλοντος. Στο τελευταίο κεφάλαιο κάναμε λόγο για το ζήτημα του θανάτου, της ψυχής και τα περί αθανασίας
description: A key point for the present thesis was the fact that a significant portion of the scholars place Ecclesiastes in the Hellenistic period and even refers to an influence from Epicurean philosophy. Therefore, the purpose of this thesis was the thematic approach of the book of Ecclesiastes and the theses of the philosopher Epicurus, so that on the basis of the common themes of the texts, a fruitful comparison could be achieved. Initially, we attempted to take a look at the history of research on the dating, the writer and the place of writing of Ecclesiastes. We then addressed the matter of God, his dwelling, and whether his activity is a regulatory factor for human reality. In the next chapter, we dealt with the view of life by Ecclesiastes and Epicurus. We studied issues such as birth, the purpose of life, the transition from youth to old age and the prospect of the future. In the last chapter we talked about the issue of death, soul and immortality
Structure of n-clique networks embedded in a complex network
Creators: name: Takemoto, Kazuhiro
name: Oosawa, Chikoo
name: Akutsu, Tatsuya
Publisher: name: arXiv
Year: 2007
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Molecular Networks (q-bio.MN)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We propose the n-clique network as a powerful tool for understanding global structures of combined highly-interconnected subgraphs, and provide theoretical predictions for statistical properties of the n-clique networks embedded in a complex network using the degree distribution and the clustering spectrum. Furthermore, using our theoretical predictions, we find that the statistical properties are invariant between 3-clique networks and original networks for several observable real-world networks with the scale-free connectivity and the hierarchical modularity. The result implies that structural properties are identical between the 3-clique networks and the original networks.
description: 12 pages, 5 figures
A class of nonholonomic kinematic constraints in elasticity
Creators: name: Vankerschaver, Joris
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 70S05; 70F25; 58A20; 74A05

description: We propose a first example of a simple classical field theory with nonholonomic constraints. Our model is a straightforward modification of a Cosserat rod. Based on a mechanical analogy, we argue that the constraint forces should be modeled in a special way, and we show how such a procedure can be naturally implemented in the framework of geometric field theory. Finally, we derive the equations of motion and we propose a geometric integration scheme for the dynamics of a simplified model.
description: 28 pages, 7 figures, uses IOPP LaTeX style (included) (v3: section 2 entirely rewritten)
Ransopedia: Your Trusty Guide to Ransomware Trends
Creators: name: Aung, Thura Zaw
name: Leow, Nathan Chen Tao
name: Ng, Damian Jun Jie
name: Sim, Jia Jin
name: Teas, Seth Matthias Wen Xiong
name: Wong, Nicholas Heng Loong
name: Quah, Chee Kwang
name: Guo, Huaqun
Publisher: name: Singapore Institute of Technology
Year: 2024
Subjects: classificationCode: 460403
subject: Data security and protection
classificationCode: 460406
subject: Software and application security
classificationCode: 461199
subject: Machine learning not elsewhere classified
classificationCode: 460501
subject: Data engineering and data science
classificationCode: 460508
subject: Information retrieval and web search
classificationCode: 460807
subject: Information visualisation

description: Ransomware is a form of malware which attackers use to encrypt corporate and individual victims’ data to blackmail them for financial gain. While ransomware-related cyberattacks occur frequently, information regarding historical ransomware attacks and their exploited vulnerabilities is sparse and unorganized. We present Ransopedia, a tool that achieves two goals. Firstly, it is a curated encyclopedia that is intended to provide the public with insights on ransomware attacks and associated vulnerabilities. Secondly, it forecasts potential future vulnerabilities through predictive analytics.
Radiographic findings of Intestinal Capillariasis: Case report and review literatures
Creators: name: Boontaree Wanitwattanarumlug, Vithya Varavithya
Publisher: name: Faculty of Medicine,Srinakharinwirot University
Year: 2009
Subjects: Capillariasis, intestinal infection, small bowel follow through

description: 1, 16, Journal of Medicine and Health Sciences
Digital Performance: the use of new media technologies in the performing arts
Creators: name: Bulut, Miran Yusuf
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Παραστατικές Τέχνες
Νέες Τεχνολογίες Επικοινωνίας
Mobile application prototype
Performing arts
New media Technologies

description: This research project analyses the relationship between performing arts and new media technologies. The project explores this interchange through the lens of a mobile application protocol which, we submit, could be employed to augment drama performances through an interactive approach. The research problem rests on the question of how modern technology has shaped the perception of performing arts in the contemporary techno-culture. The research is supported by expert interviews, all of which have bolstered my main finding that technology acts as an extension of the outer-world, as well as society. Thus, the overarching contribution of this research posits that performing arts should acknowledge this finding in order to reflect shifts within the techno-culture.
description: Αυτό το ερευνητικό πρόγραμμα αναλύει τη σχέση μεταξύ των παραστατικών τεχνών και των νέων τεχνολογιών των μέσων ενημέρωσης με σκοπό τη διερεύνηση αυτής της αλληλεπίδρασης μέσω ενός πρωτοκόλλου κινητής εφαρμογής, το οποίο, όπως προτείνουμε στο πλαίσιο της ερευνητικής μας πρότασης θα μπορούσε να χρησιμοποιηθεί για να μεγεθύνει τις θεατρικές παραστάσεις μέσω μιας διαδραστικής προσέγγισης.
The effects of sentence context on the processing of figurative language in an adult population with normal cognition
Creators: name: McPhee, Rosemary Michelle
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study was to investigate how contextual information, prior to an idiomatic expression, affects the automatic processing of idiomatic expressions in an adult population with normal cognition. An on-line wordmonitoring reaction-time task was used in which subjects were required to identify target words in spoken passages. The target words were final words from six idiomatic expressions. The idiomatic expressions were embedded in contexts biasing them to either a figurative interpretation, a literal interpretation, or an ambiguous context in which neither a figurative or a literal interpretation could be predicted from the contextual information preceding the idiomatic phrase. A filler condition was also presented in which target words were presented without the idiomatic expressions. It was found that subjects responded faster to target words in the idiomatic, literal, and ambiguous context conditions than to target words in the filler condition. Reaction times to target words in the literal context condition were faster than target words in the ambiguous context condition. Reaction times to target words in idiomatic context conditions were faster than ambiguous context conditions and slower than literal context conditions; however, this difference was not significant. These results support the Key Word Hypothesis which assumes that idiomatic expressions are processed literally until the key word is encountered. When the key word is encountered, the figurative interpretation is triggered.
The impact of common envelope development criteria on the formation of LIGO/Virgo sources
Creators: name: Olejak, Aleksandra
name: Belczynski, Krzysztof
name: Ivanova, Natalia
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The treatment and criteria for development of unstable Roche lobe overflow (RLOF) that leads to the common envelope (CE) phase have hindered the evolutionary predictions for decades. In particular, the formation of black hole-black hole (BH-BH), black hole-neutron star (BH-NS), and neutron star-neutron star (NS-NS) merging binaries depends sensitively on the CE phase in classical isolated binary evolution model. All these mergers are now reported as LIGO/Virgo sources or source candidates. CE is even considered by some as a mandatory phase in the formation of BH-BH, BH-NS or NS-NS mergers in binary evolution. At the moment, there is no full first-principles model for development of CE. We employ the Startrack population synthesis code to test the current advancements in studies on stability of RLOF for massive donors to assess their effect on LIGO/Virgo source population. In particular, we allow for more restrictive CE development criteria for massive donors. We also test a modified condition for switching between different types of stable mass transfer. Implemented modifications significantly influence basic properties of merging double compact objects, sometimes in non-intuitive way. For one of tested models with restricted CE development criteria local merger rate density for BH-BH systems increased due to emergence of a new dominant formation scenario without any CE phase. We find that the changes in highly uncertain assumptions on RLOF physics may significantly affect (i) local merger rate density, (ii) shape of the mass and mass ratio distributions, and (iii) dominant evolutionary formation (with and without CE) scenarios of LIGO/Virgo sources. Our results demonstrate that without sufficiently strong constraints on RLOF physics, one is not able to draw fully reliable conclusions about the population of double compact object systems based on population synthesis studies.
description: 20 pages, 11 figures, accepted for publication in A&A
Constraints on Global Symmetry Breaking in Quantum Gravity from Cosmic Birefringence Measurements
Creators: name: Alvey, James
name: Abenza, Miguel Escudero
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: All global symmetries are expected to be explicitly broken by quantum gravitational effects, and yet may play an important role in Particle Physics and Cosmology. As such, any evidence for a well-preserved global symmetry would give insight into an important feature of gravity. We argue that a recently reported $2.4σ$ detection of cosmic birefringence in the Cosmic Microwave Background could be the first observational indication of a well-preserved (although spontaneously broken) global symmetry in nature. A compelling solution to explain this measurement is a very light pseudoscalar field that interacts with electromagnetism. In order for gravitational effects not to lead to large corrections to the mass of this scalar field, we show that the breaking of global symmetries by gravity should be bounded above. Finally, we highlight that any bound of this type would have clear implications for the construction of theories of quantum gravity, as well as for many particle physics scenarios.
description: 3 pages. v3: Minor modifications. Matches published version in PLB
Giant Intrinsic Spin and Orbital Hall Effects in Sr2MO4 (M=Ru,Rh,Mo)
Creators: name: Kontani, H.
name: Tanaka, T.
name: Hirashima, D. S.
name: Yamada, K.
name: Inoue, J.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the intrinsic spin Hall conductivity (SHC) and the d-orbital Hall conductivity (OHC) in metallic d-electron systems, by focusing on the t_{2g}-orbital tight-binding model for Sr2MO4 (M=Ru,Rh,Mo). The conductivities obtained are one or two orders of magnitude larger than predicted values for p-type semiconductors with 5% hole doping. The origin of these giant Hall effects is the ``effective Aharonov-Bohm phase'' that is induced by the d-atomic angular momentum in connection with the spin-orbit interaction and the inter-orbital hopping integrals. The huge SHC and OHC generated by this mechanism are expected to be ubiquitous in multiorbital transition metal complexes, which pens the possibility of realizing spintronics as well as orbitronics devices.
description: 5 pages, accepted for publication in PRL
Additional file 12: of Transcriptome profile in bursa of Fabricius reveals potential mode for stress-influenced immune function in chicken stress model
Creators: name: Zhang, Yanhua
name: Zhou, Yanting
name: Sun, Guirong
name: Li, Kui
name: Li, Zhuanjian
name: Su, Aru
name: Liu, Xiaojun
name: Li, Guoxi
name: Jiang, Ruirui
name: Han, Ruili
name: Tian, Yadong
name: Kang, Xiangtao
name: Yan, Fengbin
Publisher: name: figshare
Year: 2018
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Mental Health

description: Table S8. Effects of CORT treatment on the serum biochemical indexes of chickens. Data are shown as the meanâ Âąâ SE. Different lowercase letters (a and b) in same column indicate significant differences among the C_B and B_B groups (P < 0.05). (DOCX 13 kb)
Phase-contrast THz-CT for non-destructive testing
Creators: name: Fosodeder, Peter
name: Hubmer, Simon
name: Ploier, Alexander
name: Ramlau, Ronny
name: van Frank, Sandrine
name: Rankl, Christian
Publisher: name: arXiv
Year: 2021
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A new approach for image reconstruction in THz computed tomography (THz-CT) is presented. Based on a geometrical optics model containing the THz signal amplitude and phase, a novel algorithm for extracting an average phase from the measured THz signals is derived. Applying the algorithm results in a phase-contrast sinogram, which is further used for image reconstruction. For experimental validation, a fast THz time-domain spectrometer (THz-TDS) in transmission geometry is employed, enabling CT measurements within several minutes. Quantitative evaluation of reconstructed 3D printed plastic profiles reveals the potential of our approach in non-destructive testing of plastic profiles.
Diffusion mechanisms of localised knots along a polymer
Creators: name: Metzler, Ralf
name: Reisner, Walter
name: Riehn, Robert
name: Austin, Robert
name: Tegenfeldt, Jonas
name: Sokolov, Igor M.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We consider the diffusive motion of a localized knot along a linear polymer chain. In particular, we derive the mean diffusion time of the knot before it escapes from the chain once it gets close to one of the chain ends. Self-reptation of the entire chain between either end and the knot position, during which the knot is provided with free volume, leads to an L^3 scaling of diffusion time; for sufficiently long chains, subdiffusion will enhance this time even more. Conversely, we propose local ``breathing'', i.e., local conformational rearrangement inside the knot region (KR) and its immediate neighbourhood, as additional mechanism. The contribution of KR-breathing to the diffusion time scales only quadratically, L^2, speeding up the knot escape considerably and guaranteeing finite knot mobility even for very long chains.
description: 7 pages, 2 figures. Accepted to Europhys. Lett
Parameter Inference with Bifurcation Diagrams
Creators: name: Szep, Gregory
name: Dalchau, Neil
name: Csikasz-Nagy, Attila
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Dynamical Systems (math.DS)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics
subject: FOS: Biological sciences

description: Estimation of parameters in differential equation models can be achieved by applying learning algorithms to quantitative time-series data. However, sometimes it is only possible to measure qualitative changes of a system in response to a controlled condition. In dynamical systems theory, such change points are known as bifurcations and lie on a function of the controlled condition called the bifurcation diagram. In this work, we propose a gradient-based approach for inferring the parameters of differential equations that produce a user-specified bifurcation diagram. The cost function contains an error term that is minimal when the model bifurcations match the specified targets and a bifurcation measure which has gradients that push optimisers towards bifurcating parameter regimes. The gradients can be computed without the need to differentiate through the operations of the solver that was used to compute the diagram. We demonstrate parameter inference with minimal models which explore the space of saddle-node and pitchfork diagrams and the genetic toggle switch from synthetic biology. Furthermore, the cost landscape allows us to organise models in terms of topological and geometric equivalence.
Collective coherent population trapping in a thermal field
Creators: name: Macovei, M.
name: Ficek, Z.
name: Keitel, C. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We analyzed the efficiency of coherent population trapping (CPT) in a superposition of the ground states of three-level atoms under the influence of the decoherence process induced by a broadband thermal field. We showed that in a single atom there is no perfect CPT when the atomic transitions are affected by the thermal field. The perfect CPT may occur when only one of the two atomic transitions is affected by the thermal field. In the case when both atomic transitions are affected by the thermal field, we demonstrated that regardless of the intensity of the thermal field the destructive effect on the CPT can be circumvented by the collective behavior of the atoms. An analytic expression was obtained for the populations of the upper atomic levels which can be considered as a measure of the level of thermal decoherence. The results show that the collective interaction between the atoms can significantly enhance the population trapping in that the population of the upper state decreases with increased number of atoms. The physical origin of this feature was explained by the semiclassical dressed atom model of the system. We introduced the concept of multiatom collective coherent population trapping by demonstrating the existence of collective (entangled) states whose storage capacity is larger than that of the equivalent states of independent atoms.
description: Accepted for publication in Phys. Rev. A
Energy-energy correlators in Deep Inelastic Scattering
Creators: name: Li, Hai Tao
name: Makris, Yiannis
name: Vitev, Ivan
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The energy-energy correlator (EEC) is an event shape observable which probes the angular correlations of energy depositions in detectors at high energy collider facilities. It has been investigated extensively in the context of precision QCD. In this work, we introduce a novel definition of EEC adapted to the Breit frame in deep-inelastic scattering (DIS). In the back-to-back limit, the observable we propose is sensitive to the universal transverse momentum dependent (TMD) parton distribution functions and fragmentation functions, and it can be studied within the traditional TMD factorization formalism. We further show that the new observable is insensitive to experimental pseudorapidity cuts, often imposed in the Laboratory frame due to detector acceptance limitations. In this work the singular distributions for the new observable are obtained in soft collinear effective theory up to $\mathcal{O}(α_s^3)$ and are verified by the full QCD calculations up to $\mathcal{O}(α_s^2)$. The resummation in the singular limit is performed up to next-to-next-to-next-to-leading logarithmic accuracy. After incorporating non-perturbative effects, we present a comparison of our predictions to PYTHIA 8 simulations.
description: 12 pages, 6 figures; version as published
Intramuscular injections : a comparison of two teaching strategies
Creators: name: Kerray, Linda Allison
Publisher: name: University of British Columbia
Year: 2009

description: This comparative study was designed to compare two instructional techniques in teaching nursing students to administer intramuscular injections. Specifically, this study investigated student performance in the cognitive, psychomotor and affective learning domains using a performance checklist. Woodruff's (1967) Cognitive Model of Learning and Instruction provided the theoretical framework to support this study. The sample included a total of 47 second year students from one baccalaureate nursing program. Twenty nursing students comprised the experimental group and 27 students comprised the control group. The experimental group of students participated in simulated role-played situations during their laboratory instruction of injection administration. Data were collected using an investigator-developed performance checklist and analyzed using independent t-tests. The mean scores obtained on the checklists were compared between the experimental and control groups. The study findings indicated no statistically significant differences between the two groups. The study did find both instructional techniques to be equally effective.
New outbursts of the black hole candidate H1743-322/IGR J17464-3213 observed by INTEGRAL
Creators: name: Capitanio, F.
name: Bazzano, A.
name: Ubertini, P.
name: Bird, A. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: On March 2003, INTEGRAL/IBIS detected an outburst from a new source, IGR J17464-3213, that turned out to be a HEAO-1 transient, namely H1743-322. Its fux decayed below the RXTE PCA sensitivity limit in November 2003. On July 3, 2004 the source was again detected by RXTE/PCA reaching an intensity of 70 mCrab in the 2-10 keV band. Another outburst was observed in August 2005. A multiwavelength observation campaign was performed, during the three outbursts, by INTEGRAL, RXTE and CHANDRA satellites and the radio telescopes VLA and ATCA. INTEGRAL data show a good coverage during the July 2004 and August 2005 outbursts. We show here the spectral and temporal variability study performed on the data collected by INTEGRAL.
description: 5 pages, 7 figures, accepted for publication in the proceedings of VI Microquasar workshop: Microquasar and Beyond, 18-22 September 2006 in Como (Italy), eds: T. Belloni et al. (2006)
Stationary excitation waves and multimerization in arrays of quantum emitters
Creators: name: Lonigro, Davide
name: Facchi, Paolo
name: Pascazio, Saverio
name: Pepe, Francesco V.
name: Pomarico, Domenico
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the features of an equally-spaced array of two-level quantum emitters, that can be either natural atoms (or molecules) or artificial atoms, coupled to a field with a single continuous degree of freedom (such as an electromagnetic mode propagating in a waveguide). We investigate the existence and characteristics of bound states, in which a single excitation is shared among the emitters and the field. We focus on bound states in the continuum, occurring in correspondence of excitation energies in which a single excited emitter would decay. We characterize such bound states for an arbitrary number of emitters, and obtain two main results, both ascribable to the presence of evanescent fields. First, the excitation profile of the emitter states is a sinusoidal wave. Second, we discuss the emergence of multimers, consisting in subsets of emitters separated by two lattice spacings in which the electromagnetic field is approximately vanishing.
description: 33 pages, 10 figures
Statistics of Particle Trajectories at Short Time Intervals Reveal fN-Scale Colloidal Forces
Creators: name: Sainis, Sunil K.
name: Germain, Vincent
name: Dufresne, Eric R.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We describe and implement a technique for extracting forces from the relaxation of an overdamped thermal system with normal modes. At sufficiently short time intervals, the evolution of a normal mode is well described by a one-dimensional Smoluchowski equation with constant drift velocity, v, and diffusion coefficient, D. By virtue of fluctuation-dissipation, these transport coefficients are simply related to conservative forces, F, acting on the normal mode: F = k_BT v/D. This relationship implicitly accounts for hydrodynamic interactions, requires no mechanical calibration, makes no assumptions about the form of conservative forces, and requires no prior knowledge of material properties. We apply this method to measure the electrostatic interactions of polymer microspheres suspended in nonpolar microemulsions.
description: 4 pages, 3 figures
Σχεδιασμός και κατασκευή λογισμικού για τον υπολογισμό του διηλεκτρικού φάσματος συστημάτων βιομορίων με χρήση προσομοιώσεων μοριακής δυναμικής
Creators: name: Στάμκος, Ιωάννης Αθανάσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2018
Subjects: Μοριακή Δυναμική
Διηλεκτρικό φάσμα
Βιομόρια
Molecular Dynamics
Dielectric spectra
Biomolecules

description: Η χρήση των μικροκυμάτων σε κάθε πτυχή της καθημερινής ζωής καθιστά απαραίτητη την μελέτη των επιπτώσεων τους στα βιολογικά υλικά. Οι Προσομοιώσεις Μοριακής Δυναμικής σε συνδυασμό με την θεωρία Γραμμικής Απόκρισης έχουν αποδειχθεί ένα αξιόπιστο θεωρητικό εργαλείο για τον υπολογισμό των διηλεκτρικών ιδιοτήτων βιολογικών συστημάτων.Σε αυτήν την διπλωματική αναπτύχθηκε ένα λογισμικό ακολουθώντας τα αρχιτεκτονικά μοτίβα MVC και microservices με σκοπό την απλοποίηση και επιτάχυνση της παραπάνω διαδικασίας. Συνδυάζει τις γλώσσες προγραμματισμού C++, Tcl και GNU plot. Η ορθή λειτουργία του λογισμικού επαληθεύτηκε με την μελέτη υδατικού διαλύματος λυσοζύμης (Clys = 128.33 mg/mL) στους 300K. Επιπλέον μελετήθηκε υδατικό διάλυμα εκτοΐνης (Cect = 198.87 mg/mL) στους 300K.
description: The use of microwaves technology in everyday activities renders the study of effects of microwaves on biological matter necessary. Molecular dynamics simulations in conjuction with Linear Response Theory have been previously shown to be a reliable theoretical tool for the calculation of the dielectric properties of biomolecular systems. In this work a software has been developed using a combination of MVC and microservices architectures in order to simplify and speed up the above task. It combines the C++, Tcl and GNU plot languages. The software has been tested in the case of a lysozyme solution (Clys = 128.33 mg/mL) at 300K. In addition it has been also applied in the case of an ectoine solution (Cect = 198.87 mg/mL) at 300K.
MPEC 2024-T89 : 2024 TN1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2024 TN1

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
On the Correlation between Hot Jupiters and Stellar Clustering: High-eccentricity Migration Induced by Stellar Flybys
Creators: name: Rodet, Laetitia
name: Su, Yubo
name: Lai, Dong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: A recent observational study suggests that the occurrence of hot Jupiters (HJs) around solar-type stars is correlated with stellar clustering. We study a new scenario for HJ formation, called "Flyby Induced High-e Migration", that may help explain this correlation. In this scenario, stellar flybys excite the eccentricity and inclination of an outer companion (giant planet, brown dwarf, or low-mass star) at large distance (10-300 au), which then triggers high-e migration of an inner cold Jupiter (at a few astronomical units) through the combined effects of von Zeipel-Lidov-Kozai (ZLK) eccentricity oscillation and tidal dissipation. Using semianalytical calculations of the effective ZLK inclination window, together with numerical simulations of stellar flybys, we obtain the analytic estimate for the HJ occurrence rate in this formation scenario. We find that this "flyby induced high-e migration" could account for a significant fraction of the observed HJ population, although the result depends on several uncertain parameters, including the density and lifetime of birth stellar clusters, and the occurrence rate of the "cold Jupiter + outer companion" systems.
description: 10 pages, 5 figures, accepted in ApJ
Mode selection mechanism and magnetic diffusivity in a non-axisymmetric solar dynamo model
Creators: name: Jiang, Jie
name: Wang, Jingxiu
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The generation of solar non-axisymmetric magnetic fields is studied based on a linear alpha2-Omega dynamo model in a rotating spherical frame. The model consists of a solar-like differential rotation, a magnetic diffusivity varied with depth, and three types of alpha-effects with different locations, i.e. the tachocline, the whole convective zone and the sub-surface. Some comparisons of the critical alpha-values of axisymmetric m=0 and longitude-dependent modes m=1,2,3 are presented to show the roles of the magnetic diffusivity in the problem of modes selection. With the changing of diffusivity intensity for the given solar differential rotation system, the dominant mode possibly changes likewise and the stronger the diffusivity is, the easier the non-axisymmetric modes are excited. The influence of the diffusivity and differential rotation on the configurations of the dominant modes are also presented.
description: 14 pages, 3 figures, 3 tables; Accepted by AdSR