cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Chow group of 0-cycles with modulus and higher dimensional class field theory
Creators: name: Kerz, Moritz
name: Saito, Shuji
Publisher: name: arXiv
Year: 2013
Subjects: subject: Number Theory (math.NT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: One of the main results of this paper is a proof of the rank one case of an existence conjecture on lisse l-adic sheaves on a smooth variety over a finite field due to Deligne and Drinfeld. The problem is translated into the language of higher dimensional class field theory over finite fields, which describes the abelian fundamental group by Chow groups of zero cycles with moduli. A key ingredient is the construction of a cycle theoretic avatar of refined Artin conductor in ramification theory originally studied by Kazuya Kato.
description: 59 pages, arguments rearranged
Wolfgang Schadewaldt und die Gräzistik des 20. Jahrhunderts
Creators: name: Kiefner, Gottfried
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Wolfgang Schadewaldt und die Gräzistik des 20. Jahrhunderts, hg. von Womas Alexander Szlezäk unter Mitwirkung von Karl-Heinz Stanzel, SPU- DASMATA Bd. 100, VII + 173 S., Georg Olms Verlag Hildesheim-Zürich-New York 2005 (ISBN 3-487-12815-2)
description: Forum Classicum, Nr. 1 (2005): Forum Classicum
Water, health and early warnings
Creators: name: Abawi, Yahya
name: Llanso, Paul
name: Harrison, Mike
name: Mason, Simon J.
Publisher: name: Columbia University
Year: 2008
Subjects: Climatic changes--Forecasting
Climatic changes--Health aspects
Public health
Water-supply--Management
Emergency management

description: Water management is the focus in the first section, in which a number of projects are described whereby historical and forecast information is used directly in planning specific actions; in this case the forecaster-user chain is short and manageable at a personal level. Next is a detailed account of the steps required to establish climate services in the health area. Finally, Early Warning Systems are described. Early Warning Systems have not tended to use predictions until recently, traditionally having been built around historical observations. In that context Early Warning Systems provide an example of an application mainly designed for humanitarian benefit built solely using climate data alongside other information, but with growing use of predictions. A worked example is included establishing the impact of climate variability on disease incidence, the results of which provide a basis for incorporating seasonal climate forecasts into a Malaria Early Warning System in southern Africa.
Dropping Anchor: Understanding the Populations of Binary Black Holes with Random and Aligned Spin Orientations
Creators: name: Baibhav, Vishal
name: Doctor, Zoheyr
name: Kalogera, Vicky
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The relative spin orientations of black holes (BHs) in binaries encode their evolutionary history: BHs assembled dynamically should have isotropically distributed spins, while spins of the BHs originating in the field should be aligned with the orbital angular momentum. In this article, we introduce a simple population model for these dynamical and field binaries that uses spin orientations as an anchor to disentangle these two evolutionary channels. We then analyze binary BH mergers in the Third Gravitational-Wave Transient Catalog (GWTC-3) and ask whether BHs from the isotropic-spin population possess different distributions of mass ratio, spin magnitudes, or redshifts from the preferentially-aligned-spin population. We find no compelling evidence that binary BHs in GWTC-3 have different source-property distributions depending on their spin alignment, but we do find that the dynamical and field channels cannot both have mass-ratio distributions that strongly favor equal masses. We give an example of how this can be used to provide insights into the various processes that drive these BHs to merge. We also find that the current detections are insufficient in extracting differences in spin magnitude or redshift distributions of isotropic and aligned spin populations.
description: 15 pages, 5 figures; accepted for publication in The Astrophysical Journal
La Trobe eBureau author kit
Creators: name: eBureau, La Trobe
name: Chang, Steven
name: Kainey, Sebastian
Publisher: name: La Trobe
Year: 2022
Subjects: subject: 80706 Librarianship
subject: FOS: Media and communications
subject: Library and Information Studies
subject: 80799 Library and Information Studies not elsewhere classified

description: Author kit for La Trobe academics aiming to publish open educational resources with the La Trobe eBureau.
 Includes: * expression of interest form * author proposal template * author copyright agreement * overview of eBureau publishing process
Convergence of bi-measure R-tree and the pruning process
Creators: name: Löhr, Wolfgang
name: Voisin, Guillaume
name: Winter, Anita
Publisher: name: arXiv
Year: 2013
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: In [Aldous,Pitman,1998] a tree-valued Markov chain is derived by pruning off more and more subtrees along the edges of a Galton-Watson tree. More recently, in [Abraham,Delmas,2012], a continuous analogue of the tree-valued pruning dynamics is constructed along Lévy trees. In the present paper, we provide a new topology which allows to link the discrete and the continuous dynamics by considering them as instances of the same strong Markov process with different initial conditions. We construct this pruning process on the space of so-called bi-measure trees, which are metric measure spaces with an additional pruning measure. The pruning measure is assumed to be finite on finite trees, but not necessarily locally finite. We also characterize the pruning process analytically via its Markovian generator and show that it is continuous in the initial bi-measure tree. A series of examples is given, which include the finite variance offspring case where the pruning measure is the length measure on the underlying tree.
Scalar, fermionic and supersymmetric field theories with subsystem symmetries in d+1 dimensions
Creators: name: Honda, Masazumi
name: Nakanishi, Taiichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study various non-relativistic field theories with exotic symmetries called subsystem symmetries, which have recently attracted much attention in the context of fractons. We start with a scalar theory called $ϕ$-theory in $d+1$ dimensions and discuss its properties studied in literature for $d\leq 3$ such as self-duality, vacuum structure, 't Hooft anomaly, anomaly inflow and lattice regularization. Next we study a theory called chiral $ϕ$-theory which is an analogue of a chiral boson with subsystem symmetries. Then we discuss theories including fermions with subsystem symmetries. We first construct a supersymmetric version of the $ϕ$-theory and dropping its bosonic part leads us to a purely fermionic theory with subsystem symmetries called $ψ$-theory. We argue that lattice regularization of the $ψ$-theory generically suffers from an analogue of doubling problem as previously pointed out in the $d=3$ case. We propose an analogue of Wilson fermion to avoid the ``doubling" problem. We also supersymmetrize the chiral $ϕ$-theory and dropping the bosonic part again gives us a purely fermionic theory. We finally discuss vacuum structures of the theories with fermions and find that they are infinitely degenerate because of spontaneous breaking of subsystem symmetries.
description: 33 pages, v3
Development of ¹⁹F NMR Methods for the Study of GlpG Rhomboid Protease in Detergents and Lipid Nanoparticle Systems
Creators: name: Hassan, Anwar I.
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2021
Subjects: ¹⁹F NMR
Protein NMR
Protein conformational dynamics
Styrene-Maleic Acid Lipid Particles

description: Rhomboids are a family of intramembrane serine proteases that cleave transmembrane protein substrates within the lipid membrane. They are involved in a wide range of biological processes, including signal transduction, parasite invasion, bacterial quorum sensing and apoptosis. While previous X-ray crystal structures and functional studies have provided some detailed insights into the mechanism of intramembrane hydrolysis, it is still not clear how the transmembrane substrate can gain access into the active site from the lipid environment. While several modes of action have been suggested, one hypothesis proposes a lateral movement of the fifth transmembrane helix, causing a displacement that would allow transmembrane substrates to enter the rhomboid active site. A powerful method that has the potential to yield insights into rhomboid dynamics is solution NMR; however, the large size of rhomboid protease samples has complicated conventional methods typically used to assess protein structure and dynamics. ¹⁹F NMR could allow the study of rhomboid conformational dynamics by providing a simplified spectrum with high sensitivity to changes in local chemical environments. In this thesis various methods of ¹⁹F incorporation were evaluated for utility in studying rhomboid conformational dynamics, focusing on the GlpG rhomboid from E. coli. First, GlpG samples were prepared with ¹⁹F incorporated into tryptophan sidechains, and 1D ¹⁹F NMR spectra were acquired. While spectra with decent spectral dispersion were obtained, the assignment process was complicated by low signal-to-noise, and multiple changes in the spectrum introduced by the mutation. Chemoselective labelling of cysteine residues with probes containing a trifluoromethyl group was also investigated and found to give rise to well resolved ¹⁹F NMR spectra with promising characteristics. In addition, protocols for incorporation of trifluoromethyl-phenylalanine using unnatural amino acid incorporation at introduced amber codon sites were also explored, since one of the long-term goals of this work is to study ¹⁹F-labelled GlpG in its native lipid environment. For this purpose, some protocol development was also performed to introduce GlpG into lipid nanoparticles using styrene maleic acid co-block polymers. However, low expression yields of trifluoromethyl-phenylalanine-labelled GlpG and the large size of the lipid nanoparticles are not yet compatible with solution NMR. Nonetheless, this thesis lays the groundwork for further development of these samples to allow the future study of conformational exchange of GlpG in native lipid membranes.
Momentum space CFT correlators of non-conserved spinning operators
Creators: name: Marotta, Raffaele
name: Skenderis, Kostas
name: Verma, Mritunjay
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyse the 3-point CFT correlators involving non-conserved spinning operators in momentum space. We derive a general expression for the conformal Ward identities defining the 3-point functions involving two generic spin $s$ non-conserved operators and a spin 1 conserved current. We give explicit expressions for the 3-point function when the two non-conserved operators have spins 1 and 2 and generic conformal dimensions. We also systematically analyse the divergences appearing in these 3-point functions when the conformal dimensions of the two non-conserved operators coincide.
description: 33 pages + appendices
How do we know whether seasonal forecasts are any good?
Creators: name: Mason, Simon J.
name: Stephenson, David B.
Publisher: name: Columbia University
Year: 2008
Subjects: Climatic changes--Forecasting
Climatic changes--Statistical methods
Long-range weather forecasting

description: When seasonal climate forecasts are expressed probabilistically, it is not possible to answer simple questions such as “how often are the forecasts correct?” The simpler attributes of forecast quality, such as “accuracy” or “correctness” are not applicable to probabilistic forecasts, and instead the main attributes of interest are: reliability, which defines whether the confidence communicated in the forecasts is appropriate; resolution, which defines whether there is any usable information in the forecasts; discrimination, which defines whether the forecasts are discernibly different given different outcomes (somewhat similar to the attribute of resolution); and sharpness, which defines the level of confidence that is communicated in the forecasts (regardless of whether that level is appropriate). How these attributes are measured depends on how the forecasts are expressed. In this chapter these attributes are explained in detail, and representation by various graphical procedures and scoring metrics is described. Partly because there is more than one desirable attribute to good probabilistic forecasts, it is argued that there is no single scoring metric that can adequately summarise forecast quality, and that in many cases graphical procedures also hide important aspects of forecast quality. The aim in this chapter is to provide some guidelines for interpreting and recognising the strengths and limitations of the most important verification tools as applied to seasonal climate forecasts.
Preparing to teach your first class online in Zoom
Creators: name: Garay, Kristin
name: Marquart, Matthea S.
name: Baez, Johanna C.
name: Chung, Rebecca Yae-Eun
Publisher: name: Columbia University
Year: 2020
Subjects: Web-based instruction
Distance education

description: This useful one-pager lays out the technology basics needed to teach in Zoom. It answers the questions: What do I need? What else should I have? What should I do to prepare?
Multi-agent Multi-target Path Planning in Markov Decision Processes
Creators: name: Nawaz, Farhad
name: Ornik, Melkior
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Missions for autonomous systems often require agents to visit multiple targets in complex operating conditions. This work considers the problem of visiting a set of targets in minimum time by a team of non-communicating agents in a Markov decision process (MDP). The single-agent problem is at least NP-complete by reducing it to a Hamiltonian path problem. We first discuss an optimal algorithm based on Bellman's optimality equation that is exponential in the number of target states. Then, we trade-off optimality for time complexity by presenting a suboptimal algorithm that is polynomial at each time step. We prove that the proposed algorithm generates optimal policies for certain classes of MDPs. Extending our procedure to the multi-agent case, we propose a target partitioning algorithm that approximately minimizes the expected time to visit the targets. We prove that our algorithm generates optimal partitions for clustered target scenarios. We present the performance of our algorithms on random MDPs and gridworld environments inspired by ocean dynamics. We show that our algorithms are much faster than the optimal procedure and more optimal than the currently available heuristic.
description: IEEE Xplore link: https://ieeexplore.ieee.org/document/10154136
Combined search for the Higgs boson with the D0 experiment
Creators: name: D0 Collaboration
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We perform a combination of searches for standard model Higgs boson production in $p\bar{p}$ collisions recorded by the D0 detector at the Fermilab Tevatron Collider at a center of mass energy of $\sqrt{s}=1.96$ TeV. The different production and decay channels have been analyzed separately, with integrated luminosities of up to 9.7 fb$^{-1}$ and for Higgs boson masses $90\leq M_H \leq 200$ GeV. We combine these final states to achieve optimal sensitivity to the production of the Higgs boson. We also interpret the combination in terms of models with a fourth generation of fermions, and models with suppressed Higgs boson couplings to fermions. The result excludes a standard model Higgs boson at 95% C.L. in the ranges $90 < M_H < 101$ GeV and $157
description: 18 pages, 18 figures, matches final PRD version
Coping Scale for Pregnancy Loss
Creators: name: Satapathy, Sujata
name: Sagar, Rajesh
name: Tiwari, Shraddhesh Kumar
name: Vatsala Dadhwal
name: Yadav, Kapil
name: Singh, Archana
name: Dhara Gupta
name: Devi, Usha
name: Ishita Mehta
Publisher: name: Zenodo
Year: 2022
Subjects: Coping scale, Pregnancy Loss, Exploratory Factor Analysis

description: COPING SCALE for PREGNANCY LOSS Manual and Scoring Guide
Brandeis, Hoover, and the Problem of Fair Trade in Interwar America
Creators: name: John, Richard R.
Publisher: name: Columbia University
Year: 2020
Subjects: History
Economic history
Capitalism
Free trade

description: Review of: Laura Phillips Sawyer, American Fair Trade: Proprietary Capitalism, Corporatism, and the 'New Competition,' 1890-1940 (2017). "American Fair Trade" is an impressive contribution to the burgeoning literature on the history of the American political economy, a literature energized since the 2008 financial crisis by the emergence of a new subfield known as the “history of capitalism.”
Off-centre supermassive black holes in bright central galaxies
Creators: name: Chu, Aline
name: Boldrini, Pierre
name: Silk, Joe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Supermassive black holes (SMBHs) are believed to reside at the centre of massive galaxies such as brightest cluster galaxies (BCGs). However, as BCGs experienced numerous galaxy mergers throughout their history, the central BH can be significantly kicked from the central region by these dynamical encounters. By combining the Illustris-TNG300 simulations and orbital integrations, we demonstrate that mergers with satellite galaxies on radial orbits are a main driver for such BH displacements in BCGs. BHs can get ejected to distances varying between a few parsecs to hundreds of kiloparsecs. Our results clearly establish that SMBH offsets are common in BCGs and more precisely a third of our BHs are off-centred at $z=0$. This orbital offset can be sustained for up to at least 6 Gyr between $z=2$ and $z=0$ in half of our BCGs. Since the dense gas reservoirs are located in the central region of galaxies, we argue that the consequences of off-center SMBHs in BCGs are to quench any BH growth and BH feedback.
description: 8 pages, 9 figures, accepted by MNRAS
title: Υπολογισμός συντελεστή ευστάθειας πρανών με τη βοήθεια της οριακής ανάλυσης
Creators: name: Μπαραδακης Ευπρεπιος
Publisher: name: Technical University of Crete
Year: 2016

description: Στη συγκεκριμένη εργασία αναπτύσσεται αγόριθμος υπολογισμού του συντελεστή ασφάλειας πρανούς με εφαρμογή της θεωρίας Οριακής Ανάλυσης της Ιδεατής Πλαστικότητας. Η προτεινόμενη μέθοδος είναι καλύτερη από τις μεθόδους Οριακής Ισορροπίας που δεν μπορούν να αποφύγουν τις παραδοχές για τις πλευρικές δυνάμεις μεταξύ των σωμάτων και συνεπώς και τα σφάλματα που σχετίζονται με αυτές τις παραδοχές. Κατ’ αρχάς αναφέρονται οι βασικές αρχές της θεωρίας της Τέλειας Πλαστικότητας, και οι μέθοδοι που χρησιμοποιούν την υπόψη θεωρία. Στη συνέχεια γίνεται μια σύντομη περιγραφή αυτών των μεθόδων με ιδιαίτερη έμφαση στην μέθοδο Οριακής Ανάλυσης. Κατόπιν κατασκευάζεται αλγόριθμος επίλυσης ευστάθειας ενός ομογενούς και συνεχούς πρανούς με την μέθοδο Οριακής Ανάλυσης. Για την επαλήθευση της σωστής λειτουργίας του κώδικα που αναπτύχθηκε τα αποτελέσματα του συγκρίνονται με την επίλυση του ίδιου πρανούς από το λογισμικό πεπερασμένων στοιχείων Phase2® και το λογισμικό επίλυσης με Οριακή Ισορροπία Slide®. Τελικά εφαρμόζεται ο αλγόριθμος για την επίλυση της κατολίσθησης της Μαλακάσας το 1995.
Introduction
Creators: name: Harrison, Mike
name: Troccoli, Alberto
name: Anderson, David
name: Mason, Simon J.
Publisher: name: Columbia University
Year: 2008
Subjects: Climatic changes
Climatic changes--Forecasting
Climatic changes--Risk management
Long-range weather forecasting

description: Humanity recognised millennia ago the importance of climate variability to the sustenance of life, whether that variability was expressed in the form of droughts, floods, heat, cold, or wind. Coping strategies, developed to handle the consequences of climate variability, helped ensure mankind’s survival, although the historic record indicates that not all societies successfully overcame past challenges imposed by long-term droughts, extensive flooding, and the like. Early coping strategies included migration, invasion, appropriation and storage. In addition many, probably most, perhaps all, societies developed indigenous knowledge or belief systems that they felt enabled them to foresee or control those elements of the climate that are so critical for maintaining water and food supplies.
One-dimensional Neel walls under applied external fields
Creators: name: Chermisi, Milena
name: Muratov, Cyrill B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present a detailed analysis of one-dimensional Néel walls in thin uniaxial ferromagnetic films in the presence of an in-plane applied external field in the direction normal to the easy axis. Within the reduced one-dimensional thin film model, we formulate a non-local variational problem whose minimizers are given by one-dimensional Néel wall profiles. We prove existence, uniqueness (up to translations and reflections), regularity, strict monotonicity and the precise asymptotics of the decay of the minimizers in the considered variational problem.
Periodic orbits in the Ott-Antonsen manifold
Creators: name: Omel'chenko, Oleh
Publisher: name: arXiv
Year: 2022
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 34C25 35C07 34C15 92B20

description: In their seminal paper [Chaos 18, 037113 (2008)], E. Ott and T. M. Antonsen showed that large groups of phase oscillators driven by a certain type of common force display low dimensional long-term dynamics, which is described by a small number of ordinary differential equations. This fact was later used as a simplifying reduction technique in many studies of synchronization phenomena occurring in networks of coupled oscillators and in neural networks. Most of these studies focused mainly on partially synchronized states corresponding to the equilibrium-type dynamics in the so called Ott-Antonsen manifold. Going beyond this paradigm, here we propose a universal approach for the efficient analysis of partially synchronized states with non-equilibrium periodic collective dynamics. Our method is based on the observation that the Poincaré map of the complex Riccati equation, which describes the dynamics in the Ott-Antonsen manifold, coincides with the well-known Möbius transformation. To illustrate the possibilities of our method, we use it to calculate a complete bifurcation diagram of travelling chimera states in a ring network of phase oscillators with asymmetric nonlocal coupling.
title: Συγκρίσεις των πιθανών γεωθερμικών πεδίων χαμηλής ενθαλπίας της Μεσσαράς με αντίστοιχα της Δυτικής Ελλάδας
Creators: name: Καμιτση Δημητρα
Publisher: name: Technical University of Crete
Year: 2017

description: Στην παρούσα εργασία παρουσιάζονται και συγκρίνονται γεωλογικές συνθήκες, μετρήσεις θερμοκρασιών και τα αποτελέσματα  αναλύσεων και επεξεργασίας χημισμού των υδάτων, από πιθανά γεωθερμικά πεδία χαμηλής ενθαλπίας σε περιοχές της Μεσσαράς στην Κρήτη, (περιοχές Περί – Πλάτανος και Μελιδοχώρι, από επτά συνολικά υδρογεωτρήσεις), από το γεωθερμικό πεδίο χαμηλής ενθαλπίας της Άρτας (Συκιών, από 3 γεωτρήσεις) και από τη δυτική Πελοπόννησο (7 δείγματα από γεωτρήσεις που αντλούν θερμομεταλλικό νερό).
Συγκρίνοντας τα δεδομένα διαπιστώνουμε ότι:
Α) λόγω διείσδυσης θαλασσινού νερού στον γεωθερμικό ταμιευτήρα της Άρτας τα δείγματα παρουσιάζουν εντελώς διαφορετικά φυσικο-χημικά χαρακτηριστικά σε σχέση με τα δείγματα από τη Μεσσαρά και την Πελοπόννησο.
Β) Παρόλα αυτά με τη χρήση θερμοδυναμικών υπολογισμών, τα δείγματα από τη Μεσσαρά και την Άρτα παρουσιάζουν ομοιότητες για παράδειγμα ως προς το βαθμό κορεσμού σε ορυκτά όπως γύψο και δολομίτη, ορυκτά τα οποία απαντώνται στους γεωλογικούς σχηματισμούς και των δύο περιοχών.
Γ) Τα δείγματα από την δυτική Πελοπόννησο παρουσιάζουν παρόμοια φυσικο-χημικά χαρακτηριστικά με τα δείγματα της Μεσσαράς διαφέρουν όμως ως προς την περιεκτικότητα σε ιχνοστοιχεία όπως Cr, Sr, Li κλπ.
Απώτερος στόχος της εργασίας αποτελεί η επιλογή του κατάλληλου γεωθερμόμετρου για την εκτίμηση της θερμοκρασίας ενός πιθανού γεωθερμικού ταμιευτήρα. Διαθέτοντας στοιχεία, εκτός του χημισμού, και από μετρήσεις θερμοκρασίας εντός γεώτρησης (γεώτρηση SP2) στο γεωθερμικό πεδίο Συκιών της Άρτας δοκιμάστηκε η εφαρμογή διαφορετικών γεωθερμομέτρων για την επιβεβαίωση της μετρούμενης θερμοκρασίας του ταμιευτήρα. Διαπιστώθηκε ότι το γεωθερμόμετρο που παρείχε σωστές εκτιμήσεις είναι του Na-K-Ca με διόρθωση Mg. Η υπολογιζόμενη θερμοκρασία του ταμιευτήρα στην γεώτρηση SP2  40οC συμφωνεί με τη μετρούμενη θερμοκρασία των 43οC εντός του ταμιευτήρα. Με βάση τα ανωτέρω, με τη χρήση του ιδίου γεωθερμόμετρου (Na-K-Ca με διόρθωση Mg) η εκτιμώμενη θερμοκρασία στον πιθανό ταμιευτήρα στην περιοχή Μελιδοχώρι κυμαίνεται από 46 οC ( γεώτρηση Mel1) - 51οC (γεώτρηση Mel2),  στην περιοχή Πλάτανος  εκτιμάται στους 45οC (γεώτρηση Plat 2) ενώ για την περιοχή Περί η εκτίμηση της θερμοκρασίας για το πιθανό γεωθερμικό ταμιευτήρα κυμαίνεται μεταξύ 70οC -77οC για τα δείγματα από τις γεωτρήσεις Peri 1 και Peri 3 αντίστοιχα.
A Survey on Deep Learning for Skin Lesion Segmentation
Creators: name: Mirikharaji, Zahra
name: Abhishek, Kumar
name: Bissoto, Alceu
name: Barata, Catarina
name: Avila, Sandra
name: Valle, Eduardo
name: Celebi, M. Emre
name: Hamarneh, Ghassan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Skin cancer is a major public health problem that could benefit from computer-aided diagnosis to reduce the burden of this common disease. Skin lesion segmentation from images is an important step toward achieving this goal. However, the presence of natural and artificial artifacts (e.g., hair and air bubbles), intrinsic factors (e.g., lesion shape and contrast), and variations in image acquisition conditions make skin lesion segmentation a challenging task. Recently, various researchers have explored the applicability of deep learning models to skin lesion segmentation. In this survey, we cross-examine 177 research papers that deal with deep learning-based segmentation of skin lesions. We analyze these works along several dimensions, including input data (datasets, preprocessing, and synthetic data generation), model design (architecture, modules, and losses), and evaluation aspects (data annotation requirements and segmentation performance). We discuss these dimensions both from the viewpoint of select seminal works, and from a systematic viewpoint, examining how those choices have influenced current trends, and how their limitations should be addressed. To facilitate comparisons, we summarize all examined works in a comprehensive table as well as an interactive table available online at https://github.com/sfu-mial/skin-lesion-segmentation-survey.
description: Published in Medical Image Analysis (2023); 55 pages, 10 figures; Mirikharaji and Abhishek: Joint first authors; Celebi and Hamarneh: Joint senior authors
Mobile defects as mediated states for charge-carrier trapping in metal halide perovskites quantum dots
Creators: name: Liu, Xiao-Yi
name: Li, Wei-Ping
name: Cui, Yu
name: Li, Shao-Juan
name: Yang, Ran-Bo
name: Li, Zhi-Qing
name: Wang, Zi-Wu
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The migration motion of defects in metal halide perovskites quantum dots (MHPQDs) results in charge-carrier trapping become more complicated. We study two-step trapping mediated by mobile defects between the ground state of MHPQDs and a fixed-depth defect using a full-configuration defect method, where all possible trapping processes mediated by these mobile defects could be reproduced and the fastest channels among them are picked out. We find that these two-step trapping processes could keep more one order of magnitude faster than these direct ones as mobile defect with the appropriate localization strength, which implies that these indirect trapping should play the crucial rule to determine the non-radiative recombination losses. These results provide the significant explanation for studying non-radiation processes of carriers in the presence of the migration defects in recent experiments. Moreover, this model will be available to analyze some key performance related defects in electronic devices.
description: 5 pages, 3 figures
Weather forecasts: up to one week in advance
Creators: name: Mason, Simon J.
name: Thomson, Madeleine C.
Publisher: name: Columbia University
Year: 2018
Subjects: Weather forecasting
Long-range weather forecasting
Meteorology

description: In this chapter, we examine how weather forecasts are made and how they may be used by the health sector. We explore why, where and when we might obtain good forecasts and why sometimes the forecasts go wrong. We consider the theoretical and practical constraints on weather forecasts and why their accuracy declines rapidly after only a few days. Knowing the limitations of weather forecasts helps us to learn how to make best use of such information.
title: Analysis and processing of reflection seismic data
Creators: name: Μπουγιουρας Νικολαος
Publisher: name: Technical University of Crete
Year: 2017

description: Seismic Reflection data acquisition and processing is the most common geophysical method applied for natural resources exploration and has the highest degree of technical sophistication concerning both the data acquisition and processing capabilities. The main purpose of this thesis is to summarize the main steps involved in Seismic Reflection data processing, even the order in which they are applied is variable and depends on the complexity of the study area and the quality of the collected data. Thus, all the concepts, definitions, and methods which are essential for the analysis and processing of seismic reflection data are reviewed. To understand the theory of seismic reflection processing = and its application to real data, the MATLAB codes written by Mousa and Al-Shuhail (2011) [Processing of Seismic Reflection Data Using Matlab] and a 2D land-based data set (from the area of Texas, US) were used.
It is concluded that the reflection seismic processing attempts to increase the signal to noise ratio, remove the artifacts and enhance the in time and space resolution of the collected data to produce the best geomodel of the study area.
Monte Carlo integration of $C^r$ functions with adaptive variance reduction: an asymptotic analysis
Creators: name: Plaskota, Leszek
name: Przybyłowicz, Paweł
name: Stępień, Łukasz
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65C05, 65D30

description: The theme of the present paper is numerical integration of $C^r$ functions using randomized methods. We consider variance reduction methods that consist in two steps. First the initial interval is partitioned into subintervals and the integrand is approximated by a piecewise polynomial interpolant that is based on the obtained partition. Then a randomized approximation is applied on the difference of the integrand and its interpolant. The final approximation of the integral is the sum of both. The optimal convergence rate is already achieved by uniform (nonadaptive) partition plus the crude Monte Carlo; however, special adaptive techniques can substantially lower the asymptotic factor depending on the integrand. The improvement can be huge in comparison to the nonadaptive method, especially for functions with rapidly varying $r$th derivatives, which has serious implications for practical computations. In addition, the proposed adaptive methods are easily implementable and can be well used for automatic integration.
Classical formulations of the electromagnetic self-force of extended charged bodies
Creators: name: Smorenburg, P. W.
name: Kamp, L. P. J.
name: Luiten, O. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Several noncovariant formulations of the electromagnetic self-force of extended charged bodies, as have been developed in the context of classical models of charged particles, are compared. The mathematical equivalence of the various dissimilar self-force expressions is demonstrated explicitly by deriving these expressions directly from one another. The applicability of the self-force formulations and their significance in the wider context of classical charged particle models are discussed.
description: 21 pages, 1 figure
New elementary components of the Gorenstein locus of the Hilbert scheme of points
Creators: name: Szafarczyk, Robert
Publisher: name: arXiv
Year: 2022
Subjects: subject: Algebraic Geometry (math.AG)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 14C05, 13H10 (Primary) 14B12 (Secondary)

description: We construct new explicit examples of nonsmoothable Gorenstein algebras with Hilbert function $(1,n,n,1)$. This gives a new infinite family of elementary components in the Gorenstein locus of the Hilbert scheme of points and solves the cubic case of Iarrobino's conjecture.
description: 18 pages
Graphene-based nanodynamometer
Creators: name: Poklonski, N. A.
name: Siahlo, A. I.
name: Vyrko, S. A.
name: Popov, A. M.
name: Lozovik, Yu. E.
name: Lebedeva, I. V.
name: Knizhnik, A. A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A new concept of an electromechanical nanodynamometer based on the relative displacement of layers of bilayer graphene is proposed. In this nanodynamometer, force acting on one of the graphene layers causes the relative displacement of this layer and related change of conductance between the layers. Such a force can be determined by measurements of the tunneling conductance between the layers. Dependences of the interlayer interaction energy and the conductance between the graphene layers on their relative position are calculated within the first-principles approach corrected for van der Waals interactions and the Bardeen method, respectively. The characteristics of the nanodynamometer are determined and its possible applications are discussed.
description: 5 pages, 4 figures
Stability windows for proto-quark stars
Creators: name: Dexheimer, V.
name: Torres, J. R.
name: Menezes, D. P.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We investigate the existence of possible stable strange matter and related stability windows at finite temperature for different models that are generally applied to describe quark stars, namely, the quark-mass density dependent model, the MIT bag model and the Nambu-Jona-Lasinio model. We emphasize that, although the limits for stable strange matter depend on a comparison with the ground state of 56Fe, which is a zero temperature state, the quantity that has to be used in the search for strange matter in proto-quark stars is the free energy and we analyze stability windows up to temperatures of the order of 40 MeV. The effects of strong magnetic fields on stability windows are computed and the resulting mass-radius relations for different stages of the proto-quark star are analyzed.
description: Published version
Observation Site Selection for Physical Model Parameter Estimation toward Process-Driven Seismic Wavefield Reconstruction
Creators: name: Nakai, Kumi
name: Nagata, Takayuki
name: Yamada, Keigo
name: Saito, Yuji
name: Nonomura, Taku
name: Kano, Masayuki
name: Ito, Shin-ichi
name: Nagao, Hiromichi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Signal Processing (eess.SP)
subject: Geophysics (physics.geo-ph)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: The ``big'' seismic data not only acquired by seismometers but also acquired by vibrometers installed in buildings and infrastructure and accelerometers installed in smartphones will be certainly utilized for seismic research in the near future. Since it is impractical to utilize all the seismic big data in terms of the computational cost, methods which can select observation sites depending on the purpose are indispensable. We propose an observation site selection method for the accurate reconstruction of the seismic wavefield by process-driven approaches. The proposed method selects observation sites suitable for accurately estimating physical model parameters such as subsurface structures and source information to be input into a numerical simulation of the seismic wavefield. The seismic wavefield is reconstructed by the numerical simulation using the parameters estimated based on the observed signals at only observation sites selected by the proposed method. The observation site selection in the proposed method is based on the sensitivity of each observation site candidate to the physical model parameters; the matrix corresponding to the sensitivity is constructed by approximately calculating the derivatives based on the simulations, and then, observation sites are selected by evaluating the quantity of the sensitivity matrix based on the D-optimality criterion proposed in the optimal design of experiments. In the present study, physical knowledge on the sensitivity to the parameters such as seismic velocity, layer thickness, and hypocenter location was obtained by investigating the characteristics of the sensitivity matrix. Furthermore, the effectiveness of the proposed method was shown by verifying the accuracy of seismic wavefield reconstruction using the observation sites selected by the proposed method.
description: Accepted manuscript for publication in Geophysical Journal International
Bob Fass Aircheck
Creators: name: (:Unav)
Publisher: name: Columbia University
Year: 2019
Subjects: Veterans
Social conditions

description: First 9:30 is an eerie but soothing humming sound, perhaps supposed to be used for meditation. "My Dream of the Big Parade" plays. Ron Kovic discusses veterans' affairs in New York City during Mayor Beame's administration (1974-1977).
The Lyapunov exponent of holomorphic maps
Creators: name: Levin, Genadi
name: Przytycki, Feliks
name: Shen, Weixiao
Publisher: name: arXiv
Year: 2013
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: For any polynomial map with a single critical point, we prove that its lower Lyapunov exponent at the critical value is negative if and only if the map has an attracting cycle. Similar statement holds for the exponential maps and some other complex dynamical systems. We prove further that for the unicritical polynomials with positive area Julia sets almost every point of the Julia set has zero Lyapunov exponent. Part of this statement generalizes as follows: every point with positive upper Lyapunov exponent in the Julia set of an arbitrary polynomial is not a Lebegue density point.
description: Final version, Invent. Math. 2015 online
Additional file 1 of Exploring uncertainty and use of real-world data in the National Institute for Health and Care Excellence single technology appraisals of targeted cancer therapy
Creators: name: Kang, Jiyeon
name: Cairns, John
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Pharmacology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1.
Particle-like solutions in the generalized SU(2) Proca theory
Creators: name: Martinez, Jhan N.
name: Rodriguez, Jose F.
name: Rodriguez, Yeinzon
name: Gomez, Gabriel
Publisher: name: arXiv
Year: 2022
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The generalized SU(2) Proca theory is a vector-tensor modified gravity theory where the action is invariant under both diffeomorphisms and global internal transformations of the SU(2) group. This work constitutes the first approach to investigate the physical properties of the theory at astrophysical scales. We have found solutions that naturally generalize the particle-like solutions of the Einstein-Yang-Mills equations, also known as gauge boson stars. Under the requirement that the solutions must be static, asymptotically flat, and globally regular, the t'Hooft-Polyakov magnetic monopole configuration for the vector field rises as one viable possibility. The solutions have been obtained analytically through asymptotic expansions and numerically by solving the boundary value problem. We have found new features in the solutions such as regions with negative effective energy density and imaginary effective charge. We have also obtained a new kind of globally charged solutions for some region in the parameter space of the theory. Furthermore, we have constructed equilibrium sequences and found turning points in some cases. These results hint towards the existence of stable solutions which are absent in the Einstein-Yang-Mills case.
description: LaTeX file in RevTeX 4.1 style, 21 pages, 13 figures. v2: Minor clarifications added. Conclusions unchanged. v3: Some other clarifications, an appendix, and two figures added. Conclusions unchanged. Version published in Journal of Cosmology and Astroparticle Physics
Connecting climate information with health outcomes
Creators: name: Thomson, Madeleine C.
name: Metcalf, Jessica
name: Mason, Simon J.
Publisher: name: Columbia University
Year: 2018
Subjects: Climatic changes
Climatic changes--Health aspects
Public health
Public health--Decision making
Climatology

description: In this chapter we consider a range of factors that need to be taken into account when seeking to use climate information to improve health decision-making. Identifying causal mechanisms that link climate drivers with specific health issues is an important starting point for policy-makers. Matching decision time-horizons to climate information in a way that takes account of scale issues, uncertainties in the underlying data and modelling approaches as well as institutional barriers to knowledge and data sharing is also critical. And of course, all of this is dependent on a solid understanding of the climate information (including its limitations) that is available to health decision-makers. A researcher may be satisfied with a simple times-series of climate data from an authoritative source; a decision-maker needs to know that the climate information is robust, available for routine use and scalable (i.e., can be used over the entire region of interest).
Proper factorization theorems in high-energy scattering near the endpoint
Creators: name: Chay, Junegone
name: Kim, Chul
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Consistent factorization theorems in high-energy scattering near the threshold are presented in the framework of the soft-collinear effective theory. Traditional factorization theorem separates the soft and collinear parts successfully, but a final step should be supplemented if each part encounters infrared divergence. We present factorization theorems in which the infrared divergences appear only in the parton distribution functions and the infrared divergence is removed by carefully separating and reorganizing collinear and soft parts. The underlying physical idea is to isolate and remove the soft contributions systematically from the collinear part in loop corrections order by order. After this procedure, each factorized term in the scattering cross sections is free of infrared divergence, and can be safely computed using perturbation theory. This factorization procedure can be applied to various high-energy scattering processes. We show factorization theorems in Drell-Yan processes, deep inelastic scattering and Higgs production near the endpoint.
description: 36 pages, 4 figures. To be published in JHEP
[Gymnasium (111, 2005, Heft 4) / Gymnasium 112, 2005, Heft 5 / Antike Welt (H. 4/2005) ...]
Creators: name: Rabl, Josef
Publisher: name: Forum Classicum
Year: 2017

description: -
description: Forum Classicum, Nr. 3 (2005): Forum Classicum
Horst-Dieter Blume und Cay Lienau (Hrsg.): Die Olympischen Spiele in Griechenland zwischen Kult, Sport und Politik 776 v. Chr
Creators: name: Gertz, Norbert
Publisher: name: Forum Classicum
Year: 2017

description: Rezension zu: Horst-Dieter Blume und Cay Lienau (Hrsg.): Die Olympischen Spiele in Griechenland zwischen Kult, Sport und Politik 776 v. Chr. - 2004 (= Choregia. Münstersche Griechenland-Studien Bd. 3), Münster 2005, Bezug: Verlag C. Lienau, Zumsandestr. 36, D-48145 Münster, (ISBN 3-934017-04-5)
description: Forum Classicum, Nr. 3 (2005): Forum Classicum
Climate basics
Creators: name: Mason, Simon J.
Publisher: name: Columbia University
Year: 2018
Subjects: Climatic changes
Climatology

description: In this chapter, we focus on key concepts that health professionals need to understand in order to use climate data and information effectively. We explain the distinction between climate and weather and introduce some basic principles on the physics of the climate. We then go on to describe the character and behaviour of three key variables, namely temperature, precipitation and humidity. Descriptions of a range of other relevant important climate variables follow. Included is a section on storms that describes how temperature, wind and rainfall interact to create devastating extreme events. The final section discusses how data for different variables can be aggregated in time and space, and identifies challenges that emerge in the process.