cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Solar System Realms: Stars Taking Up Space Where Planets Could Be
Creators: name: Henry, Todd J.
name: Paredes, Leonardo A.
name: Vrijmoet, Eliot
name: Couperus, Andrew C.
name: James, Hodari-Sadiki
name: Jao, Wei-Chun
name: Kar, Aman
name: Lesley, DeAndre X.
name: Casetti-Dinescu, Dana I.
name: Horch, Elliott P.
name: Winters, Jennifer G.
Publisher: name: Zenodo
Year: 2021
Subjects: K dwarf stars (876) M dwarf stars (982) Multiple stars (1081) Stellar populations (1622)

description: The RECONS (REsearch Consortium On Nearby Stars, www.recons.org) team continues to explore the solar neighborhood by evaluating the nearest stars, both individually and as a population. Key points are becoming clear: we now know that 86% of all stars are K and M dwarfs, and we need to reach to 50 pc and 25 pc, respectively, to create samples of 5000 and 3000 primaries each. These two sizable samples allow us to understand the outcome of the star formation process across a factor of ten in mass as never before. Here we focus on one crucial area of research --- stellar companions --- with results of our surveys combining radial velocities, astrometry, high-resolution imaging, and trawls of catalogs and the literature. The surveys are carried out primarily at the CTIO/SMARTS 0.9m and 1.5m, the SOAR 4.1m, and both Gemini 8.1m telescopes. We reveal companions at separations from less than 1 AU to more than 1000 AU from the K and M dwarfs, with the key result that these stellar partners are found most often at separations similar to our Solar System. Thus, the star and planet formation processes work on the same spatial scales ... a fact that we must keep in mind as our solar neighborhood becomes enriched with planetary discoveries at distances comparable to where stellar companions are found. This work has been supported by NSF grants AST-0507711, AST-0908402, AST-1109445, AST-1411206, and AST-1715551, AST-1910130, and the SMARTS Consortium.
Διαχείριση Υδατικών Πόρων-Υδραυλικών Δικτύων:
Creators: name: Dushku, Klidi Alfred (Κλίντι Ντούσκου)
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Γενετικοί Αλγόριθμοι
Διαχείριση Υδατικών Πόρων
Υδραυλικά Δίκτυα
Genetic Algorithm
Management of Water Resources
Hydraulic Networks

description: Η παρούσα διπλωματική ασχολήθηκε με τους Γενετικούς Αλγορίθμους και την συμπεριφορά τους στον τομέα της Διαχείρισης των Υδατικών Πόρων. Το μέλλον δείχνει ότι είναι επιτακτική η ανάγκη για την διερεύνηση της καλύτερης λύσης σε επίπεδο λεκάνης απορροής και ειδικά για χώρες, όπου οι πηγές από όπου προμηθεύονται νερό δεν προλαβαίνουν να ανανεωθούν λόγω της ζήτησης, χρειάζονται προσεκτική διαχείριση. Στοχός μας ήταν να παρουσιάσουμε κάποια παραδείγματα διαχείρισης υδατικών πόρων σε διάφορες χώρες, όπου φαίνεται πως το πρόβλημα υπάρχει πάρα πολλά χρόνια πριν και οι ερευνητές καταβάλλουν προσπάθειες να βρούν την βέλτιστη οικονομική λύση. Φαίνεται πως χώρες όπως η Ινδία, η Κίνα κ.α είναι σε δυσμενέστερη θέση από χώρες της ΕυρωπαΪκής Ένωσης, καθώς παρουσιάζουν λιγότερα αποθέματα για να καλύψουν τις τωρινές και μελλοντικές τους ανάγκες. Οι χώρες αυτές έχουν ταχεία οικονομική ανάπτυξη κάτι που καταλήγει να πιέζει τα υδατικά αποθέματα αυτών. Έτσι ερευνητές από κάθε χώρα έχουν προσπαθήσει να βελτιστοποιήσουν την διαχείριση των υδατικών αποθεμάτων μέσω διαφόρων μεθόδων, όπως οι γενετικοί αλγόριθμοι, έτσι ώστε η πίεση που ασκούν η βιομηχανία και η γεωργία να μην καταλήξει στην υπερεκμετάλλευση των διαθέσιμων πηγών νερού. Τέλος, συμπεραίνουμε πως το πρόβλημα αυτό είναι παγκόσμιο και φαίνεται πως η επιστημονική κοινότητα εντείνει τις προσπάθειές της για την προστασία του περιβάλλοντος και την βιώσιμη ανάπτυξη αυτού.
description: This thesis dealt with Genetic Algorythms and their behavior in the Management of Water Resources. The future shows that there is an urgent need to explore the best solution at a basin level, especially for countries that face high demand for water and consequently do not have the time to renew its water resources, so they need a more future oriented management. Our goal was to present some examples of water management in different countries, where the problem exists for many years and researchers work on finding the best financial solution. It seems that countries like India, China etc. are in a worse position than countries of the European Union, because they have fewer available fresh water resources to meet current and future needs. These countries have rapid economic growth, which results in stressing water supplies. As a consequence, researchers from each country have tried to optimize the management of water resources through different methods, such as genetic algorithms,in order to accommodate industry and agriculture demand without overexploitation of available water resources. Finally, we conclude that the problem is global and it seems that the scientific community has intensified its efforts for environmental protection and sustainable development.
A single-layer based numerical method for the slender body boundary value problem
Creators: name: Mitchell, William H.
name: Bell, Henry G.
name: Mori, Yoichiro
name: Ohm, Laurel
name: Spirn, Daniel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 76D07

description: Fluid flows containing dilute or dense suspensions of thin fibers are widespread in biological and industrial processes. To describe the motion of a thin immersed fiber, or to describe the forces acting on it, it is convenient to work with one-dimensional fiber centerlines and force densities rather than two-dimensional surfaces and surface tractions. Slender body theories offer ways to model and simulate the motion of immersed fibers using only one-dimensional data. However, standard formulations can break down when the fiber surface comes close to intersecting itself or other fibers. In this paper we introduce a numerical method for a recently derived three-dimensional slender body boundary value problem that can be stated entirely in terms of a one-dimensional distribution of forces on the centerline. The method is based on a new completed single-layer potential formulation of fluid velocity which removes the nullspace associated with the unmodified single layer potential. We discretize the model and present numerical results demonstrating the good conditioning and improved performance of the method in the presence of near-intersections. To avoid the modeling and numerical choices involved with free ends, we consider closed fibers.
description: 24 pages, 11 figures, 4 tables
Evidence of Raleigh-Hertz surface waves and shear stiffness anomaly in granular media
Creators: name: Bonneau, L.
name: Andreotti, B.
name: Clement, E.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Due to the non-linearity of Hertzian contacts, the speed of sound in granular matter increases with pressure. Under gravity, the non-linear elastic description predicts that acoustic propagation is only possible through surface modes, called Rayleigh-Hertz modes and guided by the index gradient. Here we directly evidence these modes in a controlled laboratory experiment and use them to probe the elastic properties of a granular packing under vanishing confining pressure. The shape and the dispersion relation of both transverse and sagittal modes are compared to the prediction of non-linear elasticity that includes finite size effects. This allows to test the existence of a shear stiffness anomaly close to the jamming transition.
description: 4 pages 4 figures
Two-dimensional electrons occupying multiple valleys in AlAs
Creators: name: Shayegan, M.
name: De Poortere, E. P.
name: Gunawan, O.
name: Shkolnikov, Y. P.
name: Tutuc, E.
name: Vakili, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Two-dimensional electrons in AlAs quantum wells occupy multiple conduction-band minima at the X- points of the Brillouin zone. These valleys have large effective mass and g-factor compared to the stan-dard GaAs electrons, and are also highly anisotropic. With proper choice of well width and by applying symmetry-breaking strain in the plane, one can control the occupation of different valleys thus rendering a system with tuneable effective mass, g-factor, Fermi contour anisotropy, and valley degeneracy. Here we review some of the rich physics that this system has allowed us to explore.
description: short review article, submitted for publication
Microscopic theory for the rheology of jammed soft suspensions
Creators: name: Cuny, Nicolas
name: Mari, Romain
name: Bertin, Eric
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We develop a constitutive model allowing for the description of the rheology of two-dimensional soft dense suspensions above jamming. Starting from a statistical description of the particle dynamics, we derive, using a set of approximations, a non-linear tensorial evolution equation linking the deviatoric part of the stress tensor to the strain-rate and vorticity tensors. The coefficients appearing in this equation can be expressed in terms of the packing fraction and of particle-level parameters. This constitutive equation rooted in the microscopic dynamic qualitatively reproduces a number of salient features of the rheology of jammed soft suspensions, including the presence of yield stresses for the shear component of the stress and for the normal stress difference. More complex protocols like the relaxation after a preshear are also considered, showing a smaller stress after relaxation for a stronger preshear.
description: 5 pages, 1 figure
Charge-$4e$ superconductivity from nematic superconductors in 2D and 3D
Creators: name: Jian, Shao-Kai
name: Huang, Yingyi
name: Yao, Hong
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Charge-$4e$ superconductivity as a novel phase of matter remains elusive so far. Here we show that charge-$4e$ phase can arise as a vestigial order above the nematic superconducting transition temperature in time-reversal-invariant nematic superconductors. On the one hand, the nontrivial topological defect -- nematic vortex -- is energetically favored over the superconducting phase vortex when the nematic stiffness is less than the superfluid stiffness; consequently the charge-$4e$ phase emerges by proliferation of nematic vortices upon increasing temperatures. On the other hand, the Ginzburg-Landau theory of the nematic superconductors has two distinct decoupling channels to either charge-$4e$ orders or nematic orders; by analyzing the competition between the effective mass of the charge-$4e$ order and the cubic potential of the nematic order, we find a sizable regime where the charge-$4e$ order is favored. These two analysis consistently show that nematic superconductors can provide a promising route to realize charge-$4e$ phases, which may apply to candidate nematic superconductors such as PbTaSe$_2$ and twisted bilayer graphene.
description: 4.5 pages + supplemental material, 3 figures
A CO (J=3-2) Outflow Survey of the Elias 29 Region
Creators: name: Bussmann, R. S.
name: Wong, T. W.
name: Hedden, A. S.
name: Kulesa, C. K.
name: Walker, C. K.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a 5'x5' integrated intensity map of 12CO (J=3-2) emission from the rho-Ophiuchi cloud core that traces low-luminosity outflow emission from two protostars: Elias 29 and, most likely, LFAM 26. The morphology of the outflow from Elias 29 is bipolar and has a curved axis that traces the S-shaped symmetry seen in H_2 emission. The outflow from LFAM 26 is a new detection and oriented in the east/west direction near the plane of the sky with most of the blue-shifted emission being absorbed by intervening clouds. The outflow axis of this object also appears to intersect a knot of H_2 emission previously attributed to Elias 29. LFAM 26 is a low luminosity source (L_bol = 0.06 L_sun) which, in combination with the observed outflow, makes it a candidate Very Low Luminosity Object (VeLLO). We derive lower limits to the gas column densities and energetics for both outflows. The mechanical luminosities for Elias 29 and LFAM 26 are 6.4 and 10.3 x 10^{-3} L_sun, respectively.
description: 9 pages, 2 figures, accepted to the ApJL
Ευρωπαϊκό ένταλμα σύλληψης:
Creators: name: Τριανταφύλλου, Αναστασία Απόστολου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ευρωπαϊκό ένταλμα σύλληψης
Απόφαση πλαίσιο 2002/584/ΔΕΥ
Νόμος 3251/2004
European arrest warrant
Framework decision 2002/584/JHA
Law 3251/2004

description: Η παρούσα διπλωματική εργασία ασχολείται με το ευρωπαϊκό ένταλμα σύλληψης, την απόφαση πλαίσιο 2002/584/ΔΕΥ βάσει της οποίας υιοθετήθηκε από την Ευρωπαϊκή Ένωση το ευρωπαϊκό ένταλμα σύλληψης και με το Νόμο 3251/2004 με τον οποίο το νομικό αυτό εργαλείο μεταφέρθηκε στην ελληνική έννομη τάξη. Αρχικά γίνεται μια συνοπτική παρουσίαση της εξέλιξης της συνεργασίας των κρατών μελών στις ποινικές υποθέσεις και μετά μια κατά άρθρο ανάλυση της απόφασης πλαίσιο 2002/584/ΔΕΥ δίνοντας βαρύτητα στο πώς ερμηνεύθηκαν κάποιες διατάξεις της από το Δικαστήριο της Ευρωπαϊκής Ένωσης. Κατόπιν περιγράφεται πως μεταφέρθηκε η απόφαση πλαίσιο στο ελληνικό δίκαιο με το Ν. 3251/2004 και ποια ζητήματα απασχόλησαν τα εθνικά δικαστήρια. Τέλος γίνεται μια αποτίμηση των θετικών και αρνητικών συνεπειών του ευρωπαϊκού εντάλματος σύλληψης από τη δεκαετή σχεδόν εφαρμογή του.
description: The present essay deals with the European arrest warrant, the framework decision 2002/584/JHA on the European arrest warrant adopted by the European Union and the way this legal instrument was transposed in Greek legal order by the Law 3251/2004. At first, there is a brief presentation of the collaboration of member states in criminal affairs and then an article by article analysis of the framework decision 2002/584/JHA focusing on how some provisions were interpreted by the Court of Justice of the European Union. Then, it is described how the framework decision is transposed in the Greek law system by the Law 3251/2004 and which issues were dealt by the national courts. Finally, an assessment is made of the positive and negative impact of the European arrest warrant from it’s almost a decade application.
A counterexample to the unit conjecture for group rings
Creators: name: Gardam, Giles
Publisher: name: arXiv
Year: 2021
Subjects: subject: Group Theory (math.GR)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20C07 (Primary), 16S34, 16U60 (Secondary)

description: The unit conjecture, commonly attributed to Kaplansky, predicts that if $K$ is a field and $G$ is a torsion-free group then the only units of the group ring $K[G]$ are the trivial units, that is, the non-zero scalar multiples of group elements. We give a concrete counterexample to this conjecture; the group is virtually abelian and the field is order two.
description: 12 pages; v4 final version; v3 add corollary on group of units, reformulate proof, expand discussion; v2 add reference to conjecture in Higman's thesis
: Η μορφολογία και η δυναμική της αγάπης στις πρωτοπαύλειες επιστολές:
Creators: name: Μπατσιόλα, Αικατερίνη Φίλιππου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: αγάπη
Παύλος
επιστολές
love
Paul
letters

description: Σκοπός της διατριβής ήταν να ερευνήσουμε την έννοια της αγάπης και πως αυτή παρουσιάζεται στις πρωτοπαύλειες επιστολές. Αρχικά, στο Α’ Μέρος, εξετάσαμε την αγάπη του Θεού και την αγάπη του Χριστού ως προϋποθέσεις ύπαρξης της αγάπης μεταξύ των ανθρώπων. Στο Β’ Μέρος ασχοληθήκαμε με την έννοια της αγάπης μεταξύ των ανθρώπων και πως αυτή αναφύεται στις εν λόγω επιστολές. Τέλος, η διατριβή μας ολοκληρώθηκε με τα τελικά συμπεράσματα όπου διαπιστώσαμε ότι η αγάπη σχετίζεται με το Θεό, τον Ιησού Χριστού και τους ανθρώπους. Μέσω και εξαιτίας της θεϊκής αγάπης εκδηλώνεται η σωτήρια παρέμβαση του Θεού, δια του Ιησού Χριστού, στον κόσμο. Ταυτόχρονα η θεϊκή αγάπη αποτελεί πρότυπο για την αγάπη των ανθρώπων. Ο Παύλος περιγράφει την αγάπη των ανθρώπων πάντα με αφορμή συγκεκριμένα περιστατικά, τονίζοντας παράλληλα την έμπρακτη αγάπη και όχι τη θεωρητική.
description: The aim of the present thesis is to investigate the meaning of love and how it appears at the first-Pauline letters. To begin with, at the First Part, we investigated the love of God and the love of Jesus Christ as the conditions of the existence of love between people. In the Second Part we study the meaning of love between people and how it appears at these letters. Our thesis is completed with the final conclusion, where we saw that love is related with God, Jesus and people. The deliberating intervention of God via Jesus Christ, is manifested because of God’s love. At the same time the love of God is a standard for the love of people. Paul always describes the love of people in occasion of special incidents while, underlining the importance of factual love and not of the theoretical.
Myths About Linear and Monotonic Associations: Pearson’s r, Spearman’s ρ, and Kendall’s τ
Creators: name: van den Heuvel, Edwin
name: Zhan, Zhuozhao
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Pearson’s correlation coefficient is considered a measure of linear association between bivariate random variables X and Y. It is recommended not to use it for other forms of associations. Indeed, for nonlinear monotonic associations alternative measures like Spearman’s rank and Kendall’s tau correlation coefficients are considered more appropriate. These views or opinions on the estimation of association are strongly rooted in the statistical and other empirical sciences. After defining linear and monotonic associations, we will demonstrate that these opinions are incorrect. Pearson’s correlation coefficient should not be ruled out a priori for measuring nonlinear monotonic associations. We will provide examples of practically relevant families of bivariate distribution functions with nonlinear monotonic associations for which Pearson’s correlation is preferred over Spearman’s rank and Kendall’s tau correlation in testing the dependency between X and Y. Alternatively, we will provide a family of bivariate distributions with a linear association between X and Y for which Spearman’s rank and Kendall’s tau are preferred over Pearson’s correlation. Our examples show that existing views on linear and monotonic associations are myths.
Cosmovisions: a prose collection
Creators: name: Soto, Natasha
Publisher: name: No Publisher Supplied
Year: 2021

description: "Cosmovisions" is a collection that seeks to unravel, then weave together, inherited worldviews using a hybrid approach. The work comments on the narrator’s lived experiences of place, identity, and the natural world by zooming in on “in-between” spaces, focusing on speculative elements and desire, and mixing genres. This work seeks to play with inherited worldviews in order to create its own playful and experimental space.
The Donor Stars of Cataclysmic Variables
Creators: name: Knigge, Christian
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a complete, semi-empirical donor sequence for CVs with orbital periods less than 6 hrs. All key physical and photometric parameters of CV secondaries (along with their spectral types) are given as a function of P_orb along this sequence. The main observational basis for our donor sequence is an empirical mass-radius relation for CV secondaries. We present an optimal estimate for this relation that ensures consistency with the observed locations of the period gap and the period minimum. We also present new determinations of these periods, finding P_{gap, upper edge} = 3.18 +/- 0.04 hr, P_{gap, lower edge} = 2.15 +/- 0.03 hr and P_{min} = 76.2 +/- 1.0 min. We then test the donor sequence by comparing observed and predicted spectral types (SpTs) as a function of orbital period. To this end, we update the SpT compilation of Beuermann et al. and show explicitly that CV donors have later SpTs than main sequence (MS) stars at all orbital periods. The semi-empirical donor sequence matches the observed SpTs very well, implying that the empirical M2-R2 relation predicts just the right amount of radius expansion. We finally apply the donor sequence to the problem of distance estimation. Based on a sample of 22 CVs with trigonometric parallaxes, we show that the donor sequence correctly traces the envelope of the observed M_{JHK}-P_{orb} distribution. Thus robust lower limits on distances can be obtained from single-epoch infrared observations.
description: 21 pages, 10 figures, 4 tables, abridged abstract. New version implements the changes described in an Erratum. This only affects the predicted photometric properties of brown dwarf donors. A high-resolution version of the semi-empirical CV donor sequence is available from http://www.astro.soton.ac.uk/~christian/ (under "Research")
When Your Permutation Test is Doomed to Fail
Creators: name: Christensen, William F.
name: Zabriskie, Brinley N.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: A two-tailed test comparing the means of two independent populations is perhaps the most commonly used hypothesis test in quantitative research, featured centrally in medical research, A/B testing, and throughout the sciences. When data are skewed, the standard two-tailed t test is not appropriate and the permutation test comparing the two means (or medians) has been a widely recommended alternative, with statistical authors and statistical software packages touting the permutation test’s utility, particularly for small samples. In this presentation, we illustrate that when the two samples are skewed and the sample sizes are unequal, the two-tailed permutation test (as traditionally implemented) can in some cases have power equal to zero, even when the k highest values in the combined data are all found in the group with k observations. Further, in many cases the standard permutation test exhibits decreasing power as the total sample size increases! We illustrate the causes of these perverse properties via both simulation and real-world examples, and we recommend approaches for ameliorating or avoiding these potential problems.
Dynamic analysis of bridges with laminated wood girders
Creators: name: Horyna, Tomás
Publisher: name: University of British Columbia
Year: 2009

description: The response of bridges due to loading by heavy vehicles is one of the important aspects of bridge design. The effects of traffic on the response are significant if the bridge is a short and light-weight structure and the vehicle is very heavy. This is the case of a loaded logging truck passing over a logging bridge. The passage of a vehicle over a bridge is a complex dynamic problem and, for simplicity, bridge design codes treat it in a pseudostatic manner. Generally, the codes require a static analysis of the bridge using a specified design truck. The static response of the bridge is then multiplied by a dynamic load allowance factor in order to account for the dynamic response. The timber industry is one of the most important in the province of British Columbia and transportation of its products is a significant part of this industry. Logging bridges made from wood form an important element of this transportation network and their optimal design is, therefore, of importance to the province. However, provisions of bridge design codes are mostly supported by investigations conducted on highway bridges. Such is the case of the new Canadian Highway Bridge Design Code (CHBDC), which is now being prepared in Canada for release in 1996. It is desirable, therefore, to investigate if the recommendations of CHBDC for wooden bridges correspond with the actual response of a logging bridge loaded with a passing logging truck. The objective of this study was to develop a tool to perform dynamic analysis of the system logging bridge - logging truck and to verify, that the dynamic load allowance factor from the CHBDC represents adequately the dynamic amplification factor obtained from dynamic analysis of the system logging bridge - logging truck. A numerical model to simulate the passage of a vehicle over a bridge was developed. The model was calibrated with results of ambient and forced vibration testing of an existing bridge. Finally, dynamic amplification factors were obtained from numerical simulations and compared with CHBDC provisions. The results of this study showed that these provisions are generally adequate for wooden logging bridges.
Σχέσεις εικόνας και λόγου στην ελληνική μεταπολεμική και σύγχρονη τέχνη:
Creators: name: Παπαδημητρίου, Αργυρούλα Χαρίσιου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Εικόνα
Λόγος
Ελληνική Τέχνη
Image
Word
Greek Art

description: Η διερεύνηση που επιχειρείται σε αυτήν την εργασία αφενός αφορά τη διαμόρφωση των χαρακτηριστικών της εικαστικής εικόνας, όπως προκύπτουν μέσω της σχέσης της με το λόγο, στο ειδικό εννοιολογικό και μορφολογικό επίπεδο. Αφετέρου εξετάζει την αλληλεπίδραση της ελληνικής μεταπολεμικής εικαστικής εικόνας με τις γενικότερες κοινωνικοπολιτικές συνθήκες μέσα στις οποίες διαμορφώθηκε καθώς και τον τρόπο με τον οποίο έγινε αντιληπτή αυτή η αλληλεπίδραση μέσω του λόγου, και ιδιαίτερα του τεχνοκριτικού λόγου. Πιο συγκεκριμένα το μεθοδολογικό ζητούμενο ορίζεται ως η διερεύνηση του τρόπου με τον οποίο η εικόνα θεωρούμενη ως αντικείμενο (picture) μετατρέπεται σε περιεκτικό εννοιολογικό σχήμα (image) και αντίστροφα, καθώς και οι αιτίες αλλά και οι προεκτάσεις της μετατροπής αυτής, σε συνάρτηση με την επιρροή των λέξεων που επενεργούν είτε επηρεάζοντας την ερμηνεία και την αξιολόγηση των αποτελεσμάτων της οπτικής παρατήρησης είτε μετατρέπονται σε μορφολογικά στοιχεία της εικόνας, αυτοτελή ή μη, και συμμετέχουν ως στοιχεία ενός οπτικού συστήματος επικοινωνίας.
description: The aim of the present thesis was the study of the interaction between word and image in art and especially the role of the greek art critic and theory to the transformation of the elements of art pictures in greek postwar and contemporary art, as well as the impact of the insert of words in the field of the optical representation. More specific, the thesis inquires the way in which pictures, considered as objects become images considered as concepts and conversely, and also the role of the words, both as element of the verbal interpretation and as component of the pictorial form.
The Lines are Not Fine: Measuring Vanadium Abundances in M dwarfs from Hyperfine-Split Lines
Creators: name: Shan, Yutong
name: Reiners, Ansgar
name: Fabbian, Damian
name: Marfil, Emilio
name: Montes, David
name: Tabernero, Hugo M
name: Ribas, Ignasi
name: Caballero, Jose A.
name: Quirrenbach, Andreas
name: Amado, Pedro J.
name: Aceituno, J.
name: Bejar, Victor J. S.
name: Cortes-Contreras, Miriam
name: Dreizler, Stefan
name: Hatzes, Artie P.
name: Henning, Thomas
name: Jeffers, Sandra V.
name: Kaminski, Adrian
name: Kürster, Martin
name: Lafarga, Marina
name: Morales, Juan Carlos
name: Nagel, Evangelos
name: Rodriguez-Lopez, Cristina
name: Passegger, Vera M.
name: Schweitzer, Andreas
name: Zechmeister, Mathias
Publisher: name: Zenodo
Year: 2021
Subjects: Cool Stars on the main sequence

description: Cool star atmospheres present challenges to chemical abundance studies. To date, only a handful of elements have been quantified for a handful of M dwarfs. In high-resolution spectra from the CARMENES survey, we identify a series of dramatically hyperfine-split vanadium features between 800 and 910 nm, which have strong and clean profiles throughout the early M-dwarf range. These ‘bucket-shaped’ line regions can be well-modeled with standard model atmospheres combined with the latest atomic data from VALD. From these line regions, we measure vanadium abundances for 140 nearby early M dwarfs in the CARMENES GTO sample and confirm that they follow the same trend with metallicity as the FG-type stars in the solar neighborhood, i.e., significantly above predictions from galactic chemical evolution models. Exhibiting a tight correlation with iron, vanadium abundances show promise as a potential metallicity indicator for M dwarfs. We also present evidence that several well-known chemical studies of K dwarfs have systematically overestimated their vanadium abundances largely as a result of neglecting to model hyperfine structure, a bias that worsens with decreasing temperature. Our work highlights opportunities for robust chemical analysis of cool stars afforded by high-quality spectra redward of visible.
ROMSOC Website
Creators: name: Scholz, Lena
Publisher: name: Zenodo
Year: 2018
Subjects: Outreach
Dissemination
Internet
Website

description: This report on deliverable D6.1 describes the website created for external and internal communication within
 the ROMSOC project. It outlines the motivation behind the concept of the website and illustrates the different
 pages it contains.
description: Project Deliverable D6.1
Evaluation Of The Safety And Quality Of The Tunisian Agro-Pastoral Dairy Product "Smen"
Creators: name: Jrad, Zeineb
Publisher: name: Zenodo
Year: 2024
Subjects: Agropastoral system; Goat; Oxidative stability; Typicity

description: Presented as Oral Presentation: EU PRIMA Online Seesion; and in Book of Abstracts of 16th AgroStat Conference (AgroStat 2024). Bragança, Portugal (3rd-6th September 2024).
A Bayesian Spatial Analysis of the Heterogeneity in Human Mobility Changes During the First Wave of the COVID-19 Epidemic in the United States
Creators: name: Carella, Giulia
name: Trufero, Javier Pérez
name: Álvarez, Miguel
name: Mateu, Jorge
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: The spread of COVID-19 in the U.S. prompted nonpharmaceutical interventions which caused a reduction in mobility everywhere, although with large disparities between different counties. Using a Bayesian spatial modeling framework, we investigated the association of county-level demographic and socioeconomic factors with changes in workplace mobility at two points in time: during the early stages of the epidemic (lockdown phase) and in the following phase (recovery phase) up to July 2020. While controlling for the perceived risk of infection, socioeconomic and demographic covariates explain about 40% of the variance in changes in workplace mobility during the lockdown phase, which reduces to about 10% during the recovery phase. During the lockdown phase, the results show larger drops in mobility in counties with richer families, that are less densely populated, with an older population living in dense neighborhoods, and with a lower proportion of Hispanic population. When also accounting for the residual spatial variability, the variance explained by the model increases to more than 70%, suggesting strong proximity effects potentially related to state- and county-wise regulations. These results provide community-level insights on the evolution of the U.S. mobility during the first wave of the epidemic that could directly benefit policy evaluation and interventions.
Origin of dips in tunneling dI/dV characteristics of cuprates
Creators: name: Mourachkine, A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Extensive efforts have been made to understand the electronic properties of high-Tc superconductors. One feature which has been discussed in the literature during the past few years is the dips in tunneling conductances obtained in cuprates. In this contribution, we focus our attention on the origin of these dips. On the basis of experimental data obtained in Bi2Sr2CaCu2O8 and YBa2Cu3O7, we show that the dips appear naturally in tunneling spectra due to a superposition of the peaks and humps and, therefore, have no physical meaning.
description: 2 pages including 3 figures. To appear in Physica C (proceedings of the M2S-VIII Dresden Conference)
Fusion-Fission of 16O+197Au at Sub-Barrier Energies
Creators: name: Back, B. B.
name: Jiang, C. L.
name: Janssens, R. V. F.
name: Henderson, D. J.
name: Shumard, B. R.
name: Lister, C. J.
name: Peterson, D.
name: Rehm, K. E.
name: Tanihata, I.
name: Tang, X.
name: Wang, X.
name: Zhu, S.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The recent discovery of heavy-ion fusion hindrance at far sub-barrier energies has focused much attention on both experimental and theoretical studies of this phenomenon. Most of the experimental evidence comes from medium-heavy systems such as Ni+Ni to Zr+Zr, for which the compound system decays primarily by charged-particle evaporation. In order to study heavier systems, it is, however, necessary to measure also the fraction of the decay that goes into fission fragments. In the present work we have, therefore, measured the fission cross section of 16O+197Au down to unprecedented far sub-barrier energies using a large position sensitive PPAC placed at backward angles. The preliminary cross sections will be discussed and compared to earlier studies at near-barrier energies. No conclusive evidence for sub-barrier hindrance was found, probably because the measurements were not extended to sufficiently low energies.
description: Fusion06 - Intl. Conf. on Reaction Mechanisms and Nuclear Structure at the Coulomb Barrier, San Servolo, Venezia, Italy, March 19-223, 2006 5 pages, 4 figures
Μελέτη τεχνικών διαχείρισης ενέργειας για συστήματα με μικροελεγκτή και διατάξεις συγκομιδής ενέργειας:
Creators: name: Καλαϊτζοπούλου, Αικατερίνη Ζαφειρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Μικροελεγκτές
Διαχείριση ενέργειας
Συγκομιδή ενέργειας
Microcontrollers
Power management
Energy harvesting

description: Σε αυτή την εργασία μελετάται η διαχείρισης ενέργειας σε συστήματα συγκομιδής ενέργειας. Τα συστήματα αυτά πέρα από τη διαδικασία της συγκομιδής, περιλαμβάνουν μια μονάδα επεξεργασίας που πραγματοποιεί τον έλεγχο λειτουργίας τους, την ονομαζόμενη μονάδα διαχείρισης ενέργειας. Αυτή αποτελείται από μια κεντρική περιφερειακή μονάδα που είναι συνήθως ένας μικροελεγκτής και διαχειρίζεται ένα σύστημα αισθητήρων διαφόρων τύπων, καθώς και μονάδες επικοινωνίας. Επειδή τα συστήματα αυτά σχεδιάζονται ώστε να είναι ενεργειακά αυτόνομα, απαιτείται η σωστή διαχείριση της ενέργειας τους με ποικίλους τρόπους. Γιαυτό το λόγο, μελετάται εκτενώς η βιβλιογραφία και ιδίως οι τρόποι με τους οποίους επιτυγχάνεται αυτό. Επιπλέον, προκειμένου αυτό να διερευνηθεί και πειραματικά δομείται σε εργαστηριακές συνθήκες ένα τέτοιο σύστημα και εφαρμόζονται αλγοριθμικές μέθοδοι όπως αυτές της βιβλιογραφίας, ενώ στο τέλος λαμβάνονται μετρήσεις κατανάλωσης ενέργειας με την βοήθεια ενός συστήματος μέτρησης ενέργειας, με σκοπό τον ενεργειακό χαρακτηρισμό του.
description: The main subject of this assignment is the power management in energy harvesting systems. These systems beyond the procedure of energy harvesting, have a processing unit which performs the control of its functionality. This is the power management unit. It consists of a central peripheral unit which is usually a microcrontroller. The microcontroller handles a diversity of sensor systems and also various communication systems. The purpose of these systems is to be energy independent. So, the available energy must be handled correctly in many ways. In order to succeed that, the literature is extensively studied. Moreover, because we want this to be experimentally tested, we design a sample power management system. In that system many algorithmic methods are tested as literature shows. In the end, energy measurements are taken by a given measurent system in order to characterize the energy behavior of such a system.
Variation after projection calculations for high-spin states
Creators: name: Gao, Zao-Chun
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this paper, an improvement has been made on the variation after projection (VAP) method, which is crucial in the calculations of high-spin states. It turns out that, the form of the trial VAP wave function with spin $J$ can be simplified by adopting just one projected state rather than previously adopting all $(2J+1)$ angular momentum projected states for each selected reference state, $|Φ\rangle$. The present calculations show that such simplification still minimizes the angular momentum projected energy up to a very good approximation. In this simplified VAP scheme, one can obtain almost equivalent VAP wave functions starting from different sets of the projected basis states. This clearly shows that a nuclear state can not be identified with a single intrinsic state, while in the traditional nuclear collective models, an intrinsic state is usually assigned to a well deformed rotational band.
description: 6 page,3 figures,to be published in Physics Letters B
Difference Between Binomial Proportions Using Newcombe’s Method With Multiple Imputation for Incomplete Data
Creators: name: Sidi, Yulia
name: Harel, Ofer
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: The difference between two binomial proportions is commonly used in applied research. Since many studies encounter incomplete data, proper methods to analyze such data are needed. Here, we present a proper multiple imputation (MI) procedure for constructing confidence interval for difference between binomial proportions using Newcombe’s method, which is known to have a better coverage probability when compared with Wald’s method. We use both a conventional MI procedure for ignorable missingness and a two-stage MI for non-ignorable missingness. Using simulation studies, we compare our method to three other methods and provide recommendation for the use of such methods in practice. In addition, we show the application of our new method on a COVID-19 dataset.
Reconstructing the Kaplan–Meier Estimator as an M-estimator
Creators: name: Gu, Jiaqi
name: Fan, Yiwei
name: Yin, Guosheng
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Biotechnology
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Marine Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Plant Biology
subject: Computational Biology

description: The Kaplan–Meier (KM) estimator, which provides a nonparametric estimate of a survival function for time-to-event data, has broad applications in clinical studies, engineering, economics and many other fields. The theoretical properties of the KM estimator including its consistency and asymptotic distribution have been well established. From a new perspective, we reconstruct the KM estimator as an M-estimator by maximizing a quadratic M-function based on concordance, which can be computed using the expectation–maximization (EM) algorithm. It is shown that the convergent point of the EM algorithm coincides with the traditional KM estimator, which offers a new interpretation of the KM estimator as an M-estimator. As a result, the limiting distribution of the KM estimator can be established using M-estimation theory. Application on two real datasets demonstrates that the proposed M-estimator is equivalent to the KM estimator, and the confidence intervals and confidence bands can be derived as well.
Computerized site documentation of public sector construction projects
Creators: name: English, Ralph William
Publisher: name: University of British Columbia
Year: 2009

description: This paper presents the results of a study to develop and field test a prototype computer-based system, the goal of which is to improve the ability of owners to monitor progress on and manage the site documentation of construction projects. Public agencies in particular often collect exhaustive site data which is used for such on-site purposes as decision-making and reporting, as well as serving claims support and design feedback needs by becoming the basis of the 'as-built' record of construction events. This information is typically kept in the form of site reports, diaries, photographs, test results, meeting minutes, etc. which are recorded, filed and archived in hard copy format for future reference. Retrieving the information relative to specific needs is cumbersome at best, especially when performed well after project completion, and correlating the different information types manually is virtually impossible when considering the volume and diversity of data generated. Additionally, public agencies often have needs unique from those of the private-sector contractor, especially since the former's direct costs are related primarily to contract pay items (e.g.: as with unit price contracts) as opposed to resource and time costs. Using an existing project management system as a starting point, routines were added and integrated with previous functions to accommodate pay item and quality management tracking, the linking of records and pay item information with activities, records searching and sorting, scanned records viewing, and associated report generation. The study makes use of a British Columbia Ministry of Transportation and Highways reconstruction project, in order to identify the needs of a public owner, assess the implications of such a system with regard to typical site practices, and field test the prototype system. The resultant prototype system offers a seamless integration of various functions: planning and scheduling, progress measurement, quality management, documentation of progress and problems, and analysis of performance. Benefits of the system are projected to include improvements in claims support, problem assessment, report generation, communications, and feedback for future design and constructability refinement.
Die Künstlerproblematik bei E. T. A. Hoffmann am Beispiel der Erzählungen Der goldneTopf und Die Jesuiterkirche in G.:
Creators: name: Γούπου, Αικατερίνη Βασιλείου
Publisher: name: Aristotle University of Thessaloniki
Year: 2014
Subjects: Ρομαντισμός
Προβληματισμός
Καλλιτέχνης
Romantic
The artist
Problems and issues

description: Σκοπός της διατριβής ήταν η μελέτη του ρόλου του ρομαντικού καλλιτέχνη στη ρομαντική εποχή. Εξετάσαμε τον προβληματισμό του ατόμου-καλλιτέχνη της ρομαντικής περιόδου καθώς επίσης και την άποψη των ρομαντικών όσον αφορά στην τέχνη. Στη συνέχεια παρουσιάσαμε αναλυτικά τα χαρακτηριστικά της ρομαντικής εποχής, καθώς και τον ρόλο του καλλιτέχνη γενικότερα στα πλαίσια της εποχής και πιο συγκεκριμένα στα έργα των συγγραφέων εκείνης της εποχής. Ακόμη αναφερθήκαμε και έγινε ανάλυση των παραπάνω θεμάτων στα έργα του E. T. A. Χόφμαν «το χρυσό δοχείο» και «η εκκλησία των ιησουιτών στο Γ.». Ασχοληθήκαμε επιπλέον με την σχέση των δύο διηγημάτων σε σύγκριση γενικότερα με την ρομαντική εποχή, την τέχνη και το ρομαντικό πνεύμα.
description: The aim of the present thesis was the study of the romantic artist in the Romantic era. We examined the reflection of the individual – artist, the crisis and issues of the artist such as the romantic theory about the art. Then we presented in detail the characteristics of romanticism, the role of the artist in general, such as the role of the artist in the works of the romantic writers. Furthermore, we analyzed the above issues in the works of E. T. A. Hoffmann "The golden pot" and "The Jesuit Church in G.". Another aim of this study was to examine the relationship between the two stories in general, compared to the romantic era, the art and the romantic spirit.
Spin precession and alternating spin polarization in spin-3/2 hole systems
Creators: name: Culcer, Dimitrie
name: Lechner, C.
name: Winkler, R.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The spin density matrix for spin-3/2 hole systems can be decomposed into a sequence of multipoles which has important higher-order contributions beyond the ones known for electron systems [R. Winkler, Phys. Rev. B \textbf{70}, 125301 (2004)]. We show here that the hole spin polarization and the higher-order multipoles can precess due to the spin-orbit coupling in the valence band, yet in the absence of external or effective magnetic fields. Hole spin precession is important in the context of spin relaxation and offers the possibility of new device applications. We discuss this precession in the context of recent experiments and suggest a related experimental setup in which hole spin precession gives rise to an alternating spin polarization.
description: 4 pages, 2 figures, to appear in Physical Review Letters