cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Strong Maximum Principle for the fractional Laplace equation with mixed boundary condition
Creators: name: López-Soriano, Rafael
name: Ortega, Alejandro
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B50, 35R11, 35S15

description: In this work we prove a strong maximum principle for fractional elliptic problems with mixed Dirichlet-Neumann boundary data which extends the one proved by J. Dávila to the fractional setting. In particular, we present a comparison result for two solutions of the fractional Laplace equation involving the spectral fractional Laplacian endowed with homogeneous mixed boundary condition. This result represents a non-local counterpart to a Hopf's Lemma for fractional elliptic problems with mixed boundary data.
description: 13 pages, This paper is published in Fract. Calc. Appl. Anal., Vol. 24, No 6 (2021), pp. 1699 1715, so cite it with the journal coordinates
Fireball characteristics derivable from acoustic data
Creators: name: McFadden, Luke
name: Brown, Peter
name: Vida, Denis
name: Spurný, Pavel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Near field acoustical signals from fireballs (ranges<200 km), when detected by dense ground networks, may be used to estimate the orientation of the trajectory of a fireball (Pujol et al., 2005) as well as fragmentation locations (Kalenda et al., 2014; Edwards and Hildebrand, 2004). Distinguishing ballistic arrivals (from the cylindrical shock of the fireball)from fragmentation generated signals (quasi-spherical sources) remains a challenge, but are obtainable through analysis of the acoustic path and the timing observed at ground instruments. Here we describe an integrated computer code, termed the Bolide Acoustic Modelling program or BAM, to estimate fireball trajectories and energetics. We develop a new methodology for measuring energy release from bolide fragmentation episodes solely from acoustic measurements and incorporate this into BAM. We also explore the sensitivity of seismo-acoustic fireball solutions and energy estimates to uncertainty in the underlying atmospheric model. Applying BAM to the Stubenberg meteorite producing fireball, we find the total fireball energy from ballistic arrivals to be approximately $5 \times 10^{10}$J which compares favorably to the optical estimate of $4.36 \times 10^{10}$J. The combined fragmentation energy of the Stubenberg event from acoustic data was found to be $1.47^{+0.28}_{-0.12} \times 10^{10}$J, roughly one third of the ballistic or optical total energy. We also show that measuring fireball velocities from acoustic data alone is very challenging but may be possible for slow, deeply penetrating fireballs with shallow entry angles occurring over dense seismic/infrasound networks.
description: Accepted to JASTP
Low-scale Resonant Leptogenesis in $SU(5)$ GUT with $\mathcal{T}_{13}$ Family Symmetry
Creators: name: Fong, Chee Sheng
name: Rahat, Moinul Hossain
name: Saad, Shaikh
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: We investigate low-scale resonant leptogenesis in an $SU(5) \times \mathcal{T}_{13}$ model where a single high energy phase in the complex Tribimaximal seesaw mixing produces the yet-to-be-observed low energy Dirac and Majorana ${CP}$ phases. A fourth right-handed neutrino, required to generate viable light neutrino masses within this scenario, also turns out to be necessary for successful resonant leptogenesis where $CP$ asymmetry is produced by the same high energy phase. We derive a lower bound on the right-handed neutrino mass spectrum in the $\mathrm{GeV}$ range, where part of the parameter space, although in tension with Big Bang Nucleosynthesis constrains, can be probed in planned high intensity experiments like DUNE. We also find the existence of a curious upper bound ($\text{TeV}$-scale) on the right-handed neutrino mass spectrum in majority of the parameter space due to significant washout of the resonant asymmetry by lighter right-handed neutrinos. While in most of the parameter space of our model classical Boltzmann equations are sufficient, when right-handed neutrino masses are below the electroweak sphalerons freeze-out temperature we resort to the more general density matrix formalism to take into account decays and oscillations of the right-handed neutrinos as well as their helicities which are relevant when they are relativistic.
description: general density matrix formalism is incorporated to consider oscillations and to track different helicities of right-handed neutrinos, conclusions remain unchanged; 30 pages + references, 12 figures, reference added, version accepted to Phys. Rev. D
Επείγουσες νευροχειρουργικές επεμβάσεις για κρανιοεγκεφαλικές κακώσεις. Στοιχεία εγχειρητικής ανατομίας
Creators: name: Σύρμος, Νικόλαος Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Kρανιοεγκεφαλικές κακώσεις
Nευροχειρουργική
Xειρουργική ανατομία
Traumatic brain injuries
Neurosurgery
Surgical anatomy

description: Oι κρανιοεγκεφαλικές κακώσεις αποτελούν επείγουσες καταστάσεις που χρήζουν ιδιαίτερης διαχείρισης. Για την αντιμετώπιση τους, οι νευροχειρουργοί οδηγούνται συχνά, σε επείγουσες χειρουργικές επεμβάσεις. Σκοπός: Στην παρούσα μελέτη παρουσιάζονται στοιχεία χειρουργικής ανατομίας, η αντιμετώπιση των κακώσεων αυτών, ενώ στη συνέχεια αναλύονται διάφοροι δημογραφικοί παράγοντες. Μέθοδος: Μελετήθηκαν 120 περιπτώσεις ασθενών με κρανιοεγκεφαλικές κακώσεις που υποβλήθηκαν σε επείγουσες Νευροχειρουργικές επεμβάσεις, από τον Ιανουάριο του 2006 έως και τον Ιανουάριο του 2010 (48 μήνες) με εύρος ηλικίας ασθενών που κυμάνθηκε από 10 έως 90 έτη. Αποτελέσματα: Tα περισσότερα περιστατικά, αφορούσαν τροχαία ατυχήματα, πτώσεις - εργατικά ατυχήματα, αθλητικές δραστηριότητες και επεισόδια βίας. Η παροχή οργανωμένης και άρτιας φροντίδας υγείας κρίνεται απαραίτητη για την ορθή αντιμετώπιση των κρανιοεγκεφαλικών κακώσων.
description: Traumatic brain injuries are emergency situations and they need accurate resolution. Ιn order to treat them, the Neurosurgeons are performing, frequently, emergency surgery operations.Aim: Ιn this study we present elements of surgical anatomy, the treatment of these injuries and then, we analyze various demographic features. Method: This study included 120 cases, who where treated surgically between January 2006 to January 2010 (48 months) and the range of age was from 10 to 90 years. Results: The most common injuries were road traffic injuries, falls-occupational injuries, sports activity traumas and cases of violence. Well organized and efficient health care appears to be necessary for the appropriate treatment of traumatic brain injuries.
Solo dwarfs IV: Comparing and contrasting satellite and isolated dwarf galaxies in the Local Group
Creators: name: Higgs, Clare
name: McConnachie, Alan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We compare and contrast the stellar structures of isolated Local Group dwarf galaxies, as traced by their oldest stellar populations, with the satellite dwarf galaxies of the Milky Way and M31. All Local Group dwarfs with Mv < -6 and surface brightness < 26.5 mags. per square arcsec. are considered, taking advantage of measurements from surveys that use similar observations and analysis techniques. For the isolated dwarfs, we use the results from Solitary Local (Solo) Dwarf Galaxy Survey. We begin by confirming that the structural and dynamical properties of the two satellite populations are not obviously statistically different from each other, but we note that there many more satellites around M31 than around the Milky Way down to equivalent magnitude and surface brightness limits. We find that dwarfs in close proximity to a massive galaxy generally show more scatter in their Kormendy relations than those in isolation. Specifically, isolated Local Group dwarf galaxies show a tighter trend of half-light radius versus magnitude than the satellite populations, and similar effects are also seen for related parameters. There appears to be a transition in the structural and dynamical properties of the dwarf galaxy population around ~400 kpc from the Milky Way and M31, such that the smallest, faintest, most circular dwarf galaxies are found closer than this separation. We discuss the impact of selection effects on our analysis, and we argue that our results point to the significance of tidal interactions on the population of systems within approximately 400 kpc from the MW and M31.
description: 15 pages, 6 figures, 5 tables. Accepted to MNRAS
Συγκριτική βιβλιογραφική ανασκόπηση δημόσιας αρχαιολογίας. Μελέτη περίπτωσης: το ελληνικό μοντέλο/ Αρχαιολογικό Μουσείο Θεσσαλονίκης
Creators: name: Τζημίρη, Αποστολίνα Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Ορισμός
Δημόσια αρχαιολογία
Σχέση
Term
Public archeology
Relevant

description: Η δημόσια αρχαιολογία είναι ένα επιστημονικό πεδίο άγνωστο στην πλειονότητα του ευρύτερου κοινού στην Ελλάδα. Προκειμένου να κατανοηθεί ο όρος “δημόσια αρχαιολογία” κρίνεται αναγκαία η αξιοποίηση της πλούσιας σχετικής διεθνούς εμπειρίας, καθώς και η αναγνώριση της συμβολής της στην αποτελεσματική επικοινωνία με την αρχαιολογική πολιτιστική κληρονομιά και την ορθολογική διαχείρισή της. Η ιστοριογραφική επισκόπηση της δημόσιας αρχαιολογίας όχι μόνο ορίζει αλλά και ερμηνεύει τη στάση του κοινού απέναντι στη δημόσια αρχαιολογία εφαρμόζοντας οικεία μεθοδολογία και πρακτικές προκειμένου να συναντηθεί η αρχαιολογία με το ευρύτερο κοινό.
description: Public archeology is a scientific field not widely known to the Greek public. In order to understand the term "public archeology" is highly important to make use of the rich relevant international experience, as well as to acknowledge its contribution to the effective communication with the archeological cultural heritage and its rational management. The historical overview of public heritage not only defines but helps to interpret the public stance towards that heritage by making use of familiar methodologies and practices to marry archeology with the wider public.
Η επαγώμενη από την εξωσωματική κυκλοφορία φλεγμονώδης απάντηση, καθώς και μηχανισμοί τερματισμού της
Creators: name: Βεργόπουλος, Σταύρος Στεργίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εξωσωματική κυκλοφορία
Φλεγμονώδης απόκριση
Μηχανισμοί τερματισμού φλεγμονής
Extracorporeal circulation
Inflammatory response
Attenuation of inflammatory response

description: Από τις απαρχές της σύλληψης της ιδέας της εξωσωματικής κυκλοφορίας μέχρι και το σχεδιασμό των συστημάτων MiECC έχουν (δοκιμαστεί και) εφαρμοστεί ποικίλες φυσικο-χημικές αρχές και έχουν αλλάξει άρδην πολλές τεχνικές, με έναν όμως κοινό παρονομαστή, τη φλεγμονώδη απόκριση. Η φλεγμονή είναι η φυσιολογική και τελεσίδικη απόκριση των ευκαριωτικών πολυκύτταρων οργανισμών στα εξωτερικά (περιβαλλοντικά) ερεθίσματα που στόχο έχουν τη μεταβολή της ομοιοστασίας τους. Ένα τέτοιο αποτελεί και η συσκευή εξωσωματικής κυκλοφορίας με τα διαφορά τεχνητά μέρη της και τις μη βιολογικές επιφάνειες της, με τις οποίες αναγκάζεται το αίμα και το ανθρώπινο σώμα να έρθει σε επαφή. Τα μονοπάτια και οι οδοί μέσω των οποίων θα εκτυλιχθεί το φαινόμενο της φλεγμονής είναι ποικίλα και τα περισσότερα ανεξερεύνητα. Το «οπλοστάσιο» που διαθέτουμε απέναντι σ’ αυτό το βλαπτικό και συνάμα σωτήριο γεγονός είναι πολυδιάστατο και πολυσχιδές. Περιλαμβάνει τόσο φαρμακευτικές όσο και μηχανικές τεχνικές. Η διπλωματική εργασία αυτή σκοπό έχει τη διερεύνηση της επαγόμενης από την εξωσωματική κυκλοφορία φλεγμονώδους απάντησης, καθώς και των τεχνικών (φαρμακευτικών και μη) που διαθέτουμε για την αποτροπή ή/και την άμβλυνση του φαινομένου αυτού.
description: All these years from the conception of the idea of extracorporeal circulation to design of minimal invasive extracorporeal circulation system, many technics have been tried in the fields of cardiac surgery. Inflammation is a common response in any environmental stimulus that affects the homeostasis of eukaryotic organisms. Extracorporeal circulation consists a stimulus like that. The pathophysiologic paths of the beginning and continuation of this response vary and are complicated. Many therapies have been used in order to blunt this response. These therapies are both pharmacologic and non pharmacologic. The aim of this thesis is to clarify the mechanisms of the inflammation which is induced by the extracorporeal machine and to examine all the pharmacologic and non pharmacologic technics that have been used to terminate this phenomenon.
Improving Cosmological Distance Measurements by Reconstruction of the Baryon Acoustic Peak
Creators: name: Eisenstein, Daniel J.
name: Seo, Hee-jong
name: Sirko, Edwin
name: Spergel, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The baryon acoustic oscillations are a promising route to the precision measure of the cosmological distance scale and hence the measurement of the time evolution of dark energy. We show that the non-linear degradation of the acoustic signature in the correlations of low-redshift galaxies is a correctable process. By suitable reconstruction of the linear density field, one can sharpen the acoustic peak in the correlation function or, equivalently, restore the higher harmonics of the oscillations in the power spectrum. With this, one can achieve better measurements of the acoustic scale for a given survey volume. Reconstruction is particularly effective at low redshift, where the non-linearities are worse but where the dark energy density is highest. At z=0.3, we find that one can reduce the sample variance error bar on the acoustic scale by at least a factor of 2 and in principle by nearly a factor of 4. We discuss the significant implications our results have for the design of galaxy surveys aimed at measuring the distance scale through the acoustic peak.
description: 5 pages, LaTeX. Submitted to the Astrophysical Journal
Tidal heating of black holes and exotic compact objects on the brane
Creators: name: Chakraborty, Sumanta
name: Datta, Sayak
name: Sau, Subhadip
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: During the early phase of in-spiral of a binary system, the tidal heating of a compact object due to its companion plays a significant role in the determination of the orbital evolution of the binary. The phenomenon depends crucially on the `hairs', as well as on the nature of the compact object. It turns out that the presence of extra dimension affects both these properties, by incorporating an extra tidal charge for braneworld black holes and also by introducing quantum effects, leading to possible existence of exotic compact objects. It turns out that the phasing information from tidal heating in the gravitational wave waveform can constrain the tidal charge inherited from extra dimension to a value $\sim 10^{-6}$, the most stringent constraint, to date. Moreover, second order effects in tidal heating for exotic compact objects, also reveals an oscillatory behaviour with respect to spin, which has unique signatures.
description: Published version, 46 pages, 7 figures
Where is your place, Visual Place Recognition?
Creators: name: Garg, Sourav
name: Fischer, Tobias
name: Milford, Michael
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Visual Place Recognition (VPR) is often characterized as being able to recognize the same place despite significant changes in appearance and viewpoint. VPR is a key component of Spatial Artificial Intelligence, enabling robotic platforms and intelligent augmentation platforms such as augmented reality devices to perceive and understand the physical world. In this paper, we observe that there are three "drivers" that impose requirements on spatially intelligent agents and thus VPR systems: 1) the particular agent including its sensors and computational resources, 2) the operating environment of this agent, and 3) the specific task that the artificial agent carries out. In this paper, we characterize and survey key works in the VPR area considering those drivers, including their place representation and place matching choices. We also provide a new definition of VPR based on the visual overlap -- akin to spatial view cells in the brain -- that enables us to find similarities and differences to other research areas in the robotics and computer vision fields. We identify numerous open challenges and suggest areas that require more in-depth attention in future works.
description: Accepted to the International Joint Conference on Artificial Intelligence (IJCAI2021)
Εκκλησία και Σωτηρία του Ανθρώπου στις Ομιλίες του Αγίου Γρηγορίου του Παλαμά
Creators: name: Τσίνογλου Στυλιανός  (Αρχιμανδρίτης Χερουβείμ) Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εκκλησία
Σωτηρία του Ανθρώπου
Γρηγόριος Παλαμάς
Church
Salvation of Human
Gregory the Palamas

description: Σκοπός της διατριβής ήταν η μελέτη της περί Ανθρώπου, Εκκλησίας και Σωτηρίας του Ανθρώπου διδασκαλίας του Αγίου Γρηγορίου Αρχιεπισκόπου Θεσσαλονίκης του Παλαμά, όπως αυτή εκτίθεται στα κείμενα των Ομιλιών του. Εξετάσαμε όλα τα στοιχεία που σχετίζονται με την ανωτέρω διδασκαλία του Παλαμά στα κείμενα των Ομιλιών. Στη συνέχεια εκθέσαμε όλα τα απαραίτητα εισαγωγικά πλαίσια που σκιαγραφούν την ιστορική περίοδο δράσης του Γρηγορίου Παλαμά, την ζωή του και τις κύριες θέσεις της θεολογικής διδασκαλίας του. Ακόμη παρουσιάσαμε την διδασκαλία του Παλαμά, για τον Άνθρωπο, από την δημιουργία και την πτώση του μέχρι την ενανθρώπιση και ανακαίνιση της φύσης του εν Χριστώ. Στην συνέχεια εκθέσαμε την διδασκαλία του Παλαμά για την Εκκλησία από την αρχή μέχρι την φανέρωσή της και τον σκοπό της ύπαρξής της. Ένα άλλο θέμα που αναδείξαμε είναι η διδασκαλία του Παλαμά για την Σωτηρία του Ανθρώπου και οι πρακτικές προεκτάσεις που λαμβάνει η διδασκαλία αυτή του Παλαμά. Σε όλο το εύρος της διατριβής παρουσιάσαμε την διδασκαλία του Παλαμά ως συνέχεια της διδασκαλίας της Εκκλησίας όπως αυτή παραδίδεται από τους Αποστόλους και τους προ του Παλαμά Πατέρες και διαπιστώσαμε την πλήρη συμφωνία του Παλαμά με την προ αυτού διδασκαλία της Εκκλησίας.
description: The aim of the present thesis was the study of the Archbishop of Thessaloniki Saint Gregory the Palamas about the Human, the Church and the Human Salvation, as it is exhibited in the texts of Palama’ s Homilies. We examined all the data related to the above Palama’s teaching in the texts of his Homilies. Then we presented all the necessary introductory frames that outline the historical period of the action of Gregory the Palamas, his life, and the main position of his theological teaching. We also presented Palama’s teaching on man from his creation and fall to the incarnation and renovation of his nature in Christ. We then presented the Palama’s teaching for the Church, from its inception to its revelation and the purpose of its existence. Another issue we have raised is Palama’s teaching on human salvation and the practical implications of this teaching of Palamas. Throughout the present thesis we presented the teaching of Palamas as a continuation of the teaching of the Church, as it is handed down by the apostles and the fathers before Palamas and we found the full agreement of Palamas with the teaching of the Church before him.
IR quantum gravity solves naturally cosmic acceleration and its coincidence problem
Creators: name: Anagnostopoulos, Fotios K.
name: Kofinas, Georgios
name: Zarikas, Vasilios
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The novel idea is that the undergoing accelerated expansion of the universe happens due to infrared quantum gravity modifications at intermediate astrophysical scales of galaxies or galaxy clusters, within the framework of Asymptotically Safe gravity. The reason is that structures of matter are associated with a scale-dependent positive cosmological constant of quantum origin. In this context, no extra unproven energy scales or fine-tuning are used. Furthermore, this model was confronted with the most recent observational data from a variety of probes, and with the aid of Bayesian analysis, the most probable values of the free parameters were extracted. Finally, the model proved to be statistically equivalent with $Λ$CDM, and thus being able to resolve naturally the concept of dark energy and its associated cosmic coincidence problem.
description: 7 pages
Transcription of file 020_A (collection LA 256)
Creators: name: Parker, Verdena
name: Spence, Justin
Publisher: name: California Language Archive, University of California, Berkeley
Year: 2022
Subjects: subject: hup

description: Audio files VP-300513-06 and VP-300513-07: Transcription of file 020_A (tape 020, side A) from LA 256 (collection of recordings given to the Berkeley Language Center by Verdena). Checking a few words from previous day's transcription session (VP-300513-06), then transcribing from 2:16 to 4:00. Due to re-numbering, tape 020_A has been assigned to the CLA item number LA256.020, audio file LA256.020A.
Mathematical modelling of heat transfer in the vacuum investment casting of superalloy IN718
Creators: name: Dominik, Barbara Eva
Publisher: name: University of British Columbia
Year: 2009

description: Heat transfer in vacuum investment casting of a nickel-based superalloy, 1N718, was studied using a finite-element-based solidification heat transfer code. For the external radiation boundary, general 2- and 3-dimensional viewfactor calculation codes based on a ray tracing approach were developed and verified. Heat transfer at the mould-metal interface may occur by contact conduction between the metal and the mould, and by radiation across the interface gap areas. A simple, time-dependent model was developed to simulate the decreasing contact conduction as solidification progresses. Temperature measurements were made on casting moulds in a series of experiments done in collaboration with Deloro Stellite Inc. of Belleville, Ontario. The model was applied to the experimental casting configurations. The model results were most influenced by the value of the mould thermal conductivity, the interface contact function and the radiation environment surrounding the mould. The mould thermal conductivity which resulted in the best fit to the data ranged from 0.9 to 1.1 W/m-deg C for the cylindrical castings and 0.8 - 0.9 W/m-deg C for the finned castings. The interface contact conduction function decreased from 1400 W/m2-deg C at time t = 0, to a value of 0 at t 700 seconds and t 200 seconds for the cylindrical and finned castings respectively. The model was used to simulate casting conditions for a tensile test bar which had been analyzed experimentally by Deloro Stellite Inc. Although the 2- dimensional model used gave results that were in qualitative agreement with the experiments in terms of predicting effects on microporosity and secondary dendrite arm spacing, a 3- dimensional model altered the solidification pattern and time scale for solidification by an order of magnitude. A 2-dimensional approximation, although requiring less model input time and computational time, may thus be misleading and result in incorrect conclusions being drawn. The model developed in this work provides a strong tool which can be used in conjunction with experiments to develop relationships between heat flow and the micro structural development of investment castings.
DNA Looping Kinetics Analyzed Using Diffusive Hidden Markov Model
Creators: name: Beausang, John F.
name: Zurla, Chiara
name: Manzo, Carlo
name: Dunlap, David
name: Finzi, Laura
name: Nelson, Philip C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: Tethered particle experiments use light microscopy to measure the position of a micrometer-sized bead tethered to a microscope slide via a ~micrometer length polymer, in order to infer the behavior of the invisible polymer. Currently, this method is used to measure rate constants of DNA loop formation and breakdown mediated by repressor protein that binds to the DNA. We report a new technique for measuring these rates using a modified hidden Markov analysis that directly incorporates the diffusive motion of the bead, which is an inherent complication of tethered particle motion because it occurs on a time scale between the sampling frequency and the looping time. We compare looping lifetimes found with our method, which are consistent over a range of sampling frequencies, to those obtained via the traditional threshold-crossing analysis, which vary depending on how the raw data are filtered in the time domain. Our method does not involve such filtering, and so can detect short-lived looping events and sudden changes in looping behavior.
description: 3 page pdf including 3 figures corrections: 2nd page, 1st column, values of diffusion coefficient, spring constant and the decay time were typed incorrectly. No conlcusions were affected
Τρεις προτάσεις εκπαιδευτικών προγραμμάτων με θέμα τη σεξουαλική αγωγή για παιδιά, εφήβους κα άτομα με νοητική αναπηρία
Creators: name: Αξιώτη, Ιωάννα Παναγιώτη
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Εκπαιδευτικά προγράμματα
Σεξουαλική αγωγή
Μουσειακή μάθηση
Educational programs
Sex education
Museum learning

description: Το ζήτημα της έλλειψης της σεξουαλικής αγωγής σε πολλές χώρες, ανάμεσα στις οποίες είναι και η χώρα μας, παραμένει ακόμα και στις μέρες μας επίκαιρο. Η αδυναμία της ουσιαστικής προσέγγισης της, στο πλαίσιο της εκπαίδευσης, έχει ως αποτέλεσμα την διαιώνιση στερεοτύπων, προκαταλήψεων και επικίνδυνων σεξουαλικών συμπεριφορών. Η παρούσα εργασία συντάχθηκε για να προτείνει το μουσείο ως έναν σημαντικό φορέα σεξουαλικής αγωγής, πέρα από το σχολείο και την οικογένεια. Το μουσείο κρίνεται ως ιδιαίτερα κατάλληλος χώρος για την παροχή σεξουαλικής αγωγής καθώς αξιοποιεί εκείνες τις θεωρητικές προσεγγίσεις μάθησης και εκπαίδευσης, οι οποίες τοποθετούν στο επίκεντρο τον μαθητή/επισκέπτη και συμβάλλουν σημαντικά στην επίτευξη της ουσιαστικής μάθησης. Για την πρακτική εφαρμογή της παραπάνω διατύπωσης, σχεδιάστηκαν τρία εκπαιδευτικά προγράμματα, για τρεις διαφορετικές ομάδες κοινού, παιδιά προσχολικής και πρώτης σχολικής ηλικίας, εφήβους και άτομα με νοητική αναπηρία. Ο σχεδιασμός των προγραμμάτων βασίστηκε σε ένα προσχέδιο του νοηματικού σχεδιασμού της έκθεσης της συναδέλφου Έλενας Ζιάβρα.
description: The lack of sexual education in many countries, like our country, is an issue that is still relevant. The inability of the educational system to approach this subject meaningfully, results in the perpetuation of stereotypes, prejudices and dangerous sexual behavior. This thesis suggests the museum as an alternative mean of sex education other than school and family. The museum is considered as an appropriate place for sex education as it takes advantage of theoretical approaches to learning and education which place the learner/visitor in the center of the interest and they contribute meaningful learning. The application of the statement above, three educational programs were designed for three different visitor groups, preschool and elementary school kids, teenagers and people with intellectual disabilities. These programs were designed based on a draft of an exhibition designed by my colleague Helena Ziavra.
description: Σε συνεργασία με: Παιδαγωγικό Δημοτικής Εκπαίδευσης (Πανεπιστήμιο Δυτικής Μακεδονίας)
Fast Linking Numbers for Topology Verification of Loopy Structures
Creators: name: Qu, Ante
name: James, Doug L.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Graphics (cs.GR)
subject: Computational Geometry (cs.CG)
subject: FOS: Computer and information sciences
subject: F.0; I.3.5; I.3.7

description: It is increasingly common to model, simulate, and process complex materials based on loopy structures, such as in yarn-level cloth garments, which possess topological constraints between inter-looping curves. While the input model may satisfy specific topological linkages between pairs of closed loops, subsequent processing may violate those topological conditions. In this paper, we explore a family of methods for efficiently computing and verifying linking numbers between closed curves, and apply these to applications in geometry processing, animation, and simulation, so as to verify that topological invariants are preserved during and after processing of the input models. Our method has three stages: (1) we identify potentially interacting loop-loop pairs, then (2) carefully discretize each loop's spline curves into line segments so as to enable (3) efficient linking number evaluation using accelerated kernels based on either counting projected segment-segment crossings, or by evaluating the Gauss linking integral using direct or fast summation methods (Barnes-Hut or fast multipole methods). We evaluate CPU and GPU implementations of these methods on a suite of test problems, including yarn-level cloth and chainmail, that involve significant processing: physics-based relaxation and animation, user-modeled deformations, curve compression and reparameterization. We show that topology errors can be efficiently identified to enable more robust processing of loopy structures.
description: Published at Siggraph 2021. Copyright (C) 2021 Association for Computing Machinery. Paper webpage and code at https://graphics.stanford.edu/papers/fastlinkingnumbers/
Galaxies in front of Quasars: Mrk 1456 and SDSS J114719.90+522923.2
Creators: name: K"onig, Brigitte
name: Schulte-Ladbeck, Regina E.
name: Cherinka, Brian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The chance projection of the disk of Mrk~1456 onto a background QSO is similar to the case of SBS 1543+593/HS 1543+5921. Mrk~1456 is a luminous, late-type spiral at z ~ 0.05. Though the QSO, SDSS J114719.90+522923.2 at z ~ 2, has not yet been observed with ultraviolet spectroscopy, it shows strong Ca II absorption at the redshift of Mrk 1456 which gives evidence that it is a possible Damped Lyman Alpha absorber. Spectroscopy of the star-forming nucleus of Mrk~1456 allows us to apply emission-line diagnostics to infer the chemical abundances at the center of the galaxy, and to make a prediction of the expected metallicity on the sightline to the QSO.
description: 23 pages, 4 figures, accepted for publication in AJ
Obstructions to special Lagrangian desingularizations and the Lagrangian prescribed boundary problem
Creators: name: Haskins, Mark
name: Pacini, Tommaso
Publisher: name: arXiv
Year: 2006
Subjects: subject: Differential Geometry (math.DG)
subject: Symplectic Geometry (math.SG)
subject: FOS: Mathematics
subject: 53C38, 53D12, 53C42

description: We exhibit infinitely many, explicit special Lagrangian isolated singularities that admit no asymptotically conical special Lagrangian smoothings. The existence/ nonexistence of such smoothings is an important component of the current efforts to understand which singular special Lagrangians arise as limits of smooth special Lagrangians. We also use soft methods from symplectic geometry (the relative version of the h--principle) and tools from algebraic topology to prove (both positive and negative) results about Lagrangian desingularizations of Lagrangian submanifolds with isolated singularities; we view the Lagrangian desingularization problem as the natural soft analogue of the special Lagrangian smoothing problem.
description: This is the version published by Geometry & Topology on 21 October 2006 (V4: typesetting corrections)
Efficient generative modeling of protein sequences using simple autoregressive models
Creators: name: Trinquier, Jeanne
name: Uguzzoni, Guido
name: Pagnani, Andrea
name: Zamponi, Francesco
name: Weigt, Martin
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biomolecules (q-bio.BM)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Generative models emerge as promising candidates for novel sequence-data driven approaches to protein design, and for the extraction of structural and functional information about proteins deeply hidden in rapidly growing sequence databases. Here we propose simple autoregressive models as highly accurate but computationally efficient generative sequence models. We show that they perform similarly to existing approaches based on Boltzmann machines or deep generative models, but at a substantially lower computational cost (by a factor between $10^2$ and $10^3$). Furthermore, the simple structure of our models has distinctive mathematical advantages, which translate into an improved applicability in sequence generation and evaluation. Within these models, we can easily estimate both the probability of a given sequence, and, using the model's entropy, the size of the functional sequence space related to a specific protein family. In the example of response regulators, we find a huge number of ca. $10^{68}$ possible sequences, which nevertheless constitute only the astronomically small fraction $10^{-80}$ of all amino-acid sequences of the same length. These findings illustrate the potential and the difficulty in exploring sequence space via generative sequence models.
description: 12 pages, 4 Figures + Supplementary Material
Spatial coherence of room-temperature monolayer WSe$_2$ exciton-polaritons in a trap
Creators: name: Shan, Hangyong
name: Lackner, Lukas
name: Han, Bo
name: Sedov, Evgeny
name: Rupprecht, Christoph
name: Knopf, Heiko
name: Eilenberger, Falk
name: Beierlein, Johannes
name: Kunte, Nils
name: Esmann, Martin
name: Yumigeta, Kentaro
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Klembt, Sebastian
name: Höfling, Sven
name: Kavokin, Alexey V.
name: Tongay, Sefaattin
name: Schneider, Christian
name: Antón-Solanas, Carlos
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The emergence of spatial and temporal coherence of light emitted from solid-state systems is a fundamental phenomenon, rooting in a plethora of microscopic processes. It is intrinsically aligned with the control of light-matter coupling, and canonical for laser oscillation. However, it also emerges in the superradiance of multiple, phase-locked emitters, and more recently, coherence and long-range order have been investigated in bosonic condensates of thermalized light, as well as in exciton-polaritons driven to a ground state via stimulated scattering. Here, we experimentally show that the interaction between photons in a Fabry-Perot microcavity and excitons in an atomically thin WSe$_2$ layer is sufficient such that the system enters the hybridized regime of strong light-matter coupling at ambient conditions. Via Michelson interferometry, we capture clear evidence of increased spatial and temporal coherence of the emitted light from the spatially confined system ground-state. The coherence build-up is accompanied by a threshold-like behaviour of the emitted light intensity, which is a fingerprint of a polariton laser effect. Valley-physics is manifested in the presence of an external magnetic field, which allows us to manipulate K and K' polaritons via the Valley-Zeeman-effect. Our findings are of high application relevance, as they confirm the possibility to use atomically thin crystals as simple and versatile components of coherent light-sources, and in valleytronic applications at room temperature.
description: 13 pages, 4 figures
Stochastic gel-shatter cycles in coalescence-fragmentation models
Creators: name: Fagan, Brennen T.
name: MacKay, Niall J.
name: Pushkin, Dmitri O.
name: Wood, A. Jamie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We describe a new phenomenon in models of coalescence and fragmentation, that of gel-shatter cycles. These are dynamical, unforced, stochastic cycles in which slow, approximately deterministic coalescence up to and beyond gelation is followed by abrupt random shattering. We describe their appearance in simulations of stochastic models with multiplicative kernels for coalescence and spontaneous fragmentation into monomers (`shattering'). The regime in which such cycles occur is characterized by a cyclicity order parameter, and we provide a simple scaling argument which describes both this regime and those which border it.
description: 6 pages, 4 figures
Recent results on Vus from KLOE, KTeV and NA48
Creators: name: Kozhuharov, Venelin
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the last few years a significant progress in the kaon physics has been made by three experiments - KLOE, KTeV and NA48. The reflection of their results to the extraction of the parameter Vus of the CKM matrix is presented. The obtained combined result for Vus = 0.2241(15) together with the latest value for Vud = 0.97377(27) are consistent with the Standard Model and the unitarity of the CKM matrix.
description: Contribution to the proceedings for "Heavy Quarks and Leptons 2006" (HQL06), 16-20 Oct 2006 Munich, Germany
Controllable Generation from Pre-trained Language Models via Inverse Prompting
Creators: name: Zou, Xu
name: Yin, Da
name: Zhong, Qingyang
name: Ding, Ming
name: Yang, Hongxia
name: Yang, Zhilin
name: Tang, Jie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computation and Language (cs.CL)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Large-scale pre-trained language models have demonstrated strong capabilities of generating realistic text. However, it remains challenging to control the generation results. Previous approaches such as prompting are far from sufficient, which limits the usage of language models. To tackle this challenge, we propose an innovative method, inverse prompting, to better control text generation. The core idea of inverse prompting is to use generated text to inversely predict the prompt during beam search, which enhances the relevance between the prompt and the generated text and provides better controllability. Empirically, we pre-train a large-scale Chinese language model to perform a systematic study using human evaluation on the tasks of open-domain poem generation and open-domain long-form question answering. Our results show that our proposed method substantially outperforms the baselines and that our generation quality is close to human performance on some of the tasks. Narrators can try our poem generation demo at https://pretrain.aminer.cn/apps/poetry.html, while our QA demo can be found at https://pretrain.aminer.cn/app/qa. For researchers, the code is provided in https://github.com/THUDM/InversePrompting.
description: Slightly different from the KDD version
Additional file 1 of The involvement of extracellular ATP in regulating the stunted growth of Arabidopsis plants by repeated wounding
Creators: name: Shi, Zhenzhen
name: Wang, Hanqi
name: Zhang, Yuejing
name: Jia, Lingyun
name: Pang, Hailong
name: Feng, Hanqing
name: Wang, Xin
Publisher: name: figshare
Year: 2022
Subjects: subject: Plant Biology
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Effect of the repeated wounding on the leaf exATP level of the WT and p2k1-3 mutant seedlings. The values represent means ± SD from twenty independent seedlings. The values in the control (21 days) were set to 1.000 to facilitate the comparison among the different treatments. The means denoted by the same letter did not significantly differ at P < 0.05 among the different treatment.
The kinetics zinc removal from cobalt electrolytes by Ion exchange
Creators: name: Swami, Nathan S.
Publisher: name: University of British Columbia
Year: 2009

description: The removal of trace zinc concentrations from the INCO (Port Colborne) cobalt advance electrolyte by solvent impregnated ion exchange, was studied in column and batch tests. The solvent impregnated resins containing the extractants D2EHPA, Cyanex 272 and Cyanex 302, were com pared in terms of zinc loading and selectivity. D2EHPA impregnated OC 1026 resin demonstrated superior zinc loading and selectivity charac teristics, but retained objectionably high amounts of cobalt, which were lost in the zinc elution process. Cobalt loading, was found to be closely related to the electrolyte pH drop across the column and could be reduced by a resin pre-treatment with the advance electrolyte at a pH of 3 or by an increase in the feed electrolyte pH to 5, along with operation at a temperature of 40°C and a flow rate of 10 BV/hr.; all of which act to diminish the pH drop. The kinetics of zinc loading on each of the resins was found to be comparable, and the rate controlling mechanism in batch tests was found to be particle diffusion in the first fifteen minutes, while film diffusion became rate controlling at later time intervals. Pre-treatment enhanced the diffusion coefficient inside the resin phase by nearly an order of magnitude, improved exchange kinetics by allowing a lower pH reduction during the loading process, and improved Co²⁺/Zn²⁺ exchange in a mathx of the cobalt complex. An analysis of the breakthrough curves for the resins was done to determine the mass transfer coefficients inside the column, and a range of other parameters useful in the design of ion exchange columns. The rate controlling regime in the column was a mixture of the particle and film diffusion steps, with the former being the dominant control mechanism at the operating flow rate. Further work is needed in the X-ray microprobe analysis of resin samples from the top, middle and bottom portions of the columns, and of samples from batch tests, to aid in understanding the mechanism of ion exchange. The use of zinc selective electrodes in batch tests could also be undertaken to obtain a more accurate estimate of the diffusion and mass transfer coefficients.
Statistical regimes of random laser fluctuations
Creators: name: Lepri, Stefano
name: Cavalieri, Stefano
name: Oppo, Gian-Luca
name: Wiersma, Diederik S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Statistical fluctuations of the light emitted from amplifying random media are studied theoretically and numerically. The characteristic scales of the diffusive motion of light lead to Gaussian or power-law (Levy) distributed fluctuations depending on external control parameters. In the Levy regime, the output pulse is highly irregular leading to huge deviations from a mean--field description. Monte Carlo simulations of a simplified model which includes the population of the medium, demonstrate the two statistical regimes and provide a comparison with dynamical rate equations. Different statistics of the fluctuations helps to explain recent experimental observations reported in the literature.
description: Revised version, resubmitted to Physical Review A
Ανθεκτικότητα και βιοκλιματικός σχεδιασμός αστικών οδών : διερεύνηση για την αναβάθμιση της οδού Προφήτη Ηλία
Creators: name: Καραθάνου, Δήμητρα Μενέλαου
Publisher: name: Aristotle University of Thessaloniki
Year: 2020
Subjects: Βιοκλιματικός σχεδιασμός
Ανθεκτικότητα
Πλημμύρες
Αστικό οδικό δίκτυο
Ποδηλατόδρομος
Environmental design
Resilience
Floods
Urban road network
Bicycle road

description: To αστικό οδικό δίκτυο αποτελεί σημαντική συνιστώσα μιας βιώσιμης πόλης καθώς εξασφαλίζει την ευκαιρία πρόσβασης στην εργασία, την εκπαίδευση και τις κοινωνικές εκδηλώσεις. Στην παρούσα εργασία διερευνάται η εξασφάλιση της ανθεκτικότητάς του στις πιέσεις που προκαλεί η αστική διάχυση και η κλιματική αλλαγή με την χρήση των εργαλείων του βιοκλιματικού σχεδιασμού. Ειδικότερα η εργασία προσανατολίζεται στην διερεύνηση των ωφελειών που προκύπτουν από την εφαρμογή των βιοκλιματικών εργαλείων με σκοπό την προσαρμογή των οδών στις δυσμενείς συνθήκες των ραγδαίων βροχοπτώσεων και του καύσωνα. Τέλος επιχειρείται η εφαρμογή των εργαλείων αυτών στην οδό Προφήτη Ηλία στην Πυλαία του Δήμου Πυλαίας-Χορτιάτη για την αντιμετώπιση των παραπάνω φαινομένων.
description: The urban road network constitutes an important component of a sustainable city because it provides access to work, education and social events. The present study indicates ways that can ensure its resilience to the pressures of urban diffusion and therefore climate change through bioclimatic design tools. In particular, the work focuses on exploring the benefits of applying bioclimatic tools to adapt roads to adverse conditions of rapid rainfall and heat waves. Finally, these bioclimatic tools are suggested to be applied on Profitis Ilias Street in Pilea of the Municipality of Pilea-Hortiatis to face the above phenomena.
A tale of two skyrmions: the nucleon's strange quark content in different large N_c limits
Creators: name: Cherman, Aleksey
name: Cohen, Thomas D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The nucleon's strange quark content comes from closed quark loops, and hence should vanish at leading order in the traditional large $N_c$ (TLNC) limit. Quark loops are not suppressed in the recently proposed orientifold large $N_c$ (OLNC) limit, and thus the strange quark content should be non-vanishing at leading order. The Skyrme model is supposed to encode the large $N_c$ behavior of baryons, and can be formulated for both of these large $N_c$ limits. There is an apparent paradox associated with the large $N_c$ behavior of strange quark matrix elements in the Skyrme model. The model only distinguishes between the two large $N_c$ limits via the $N_c$ scaling of the couplings and the Witten-Wess-Zumino term, so that a vanishing leading order strange matrix element in the TLNC limit implies that it also vanishes at leading order in the OLNC limit, contrary to the expectations based on the suppression/non-suppression of quark loops. The resolution of this paradox is that the Skyrme model does not include the most general type of meson-meson interaction and, in fact, contains no meson-meson interactions which vanish for the TLNC limit but not the OLNC. The inclusion of such terms in the model yields the expected scaling for strange quark matrix elements.
description: 4 pages